jpeg-8d1/0000755000175000017500000000000012354100506011017 5ustar billbilljpeg-8d1/jidctint.c0000644000175000017500000054321411213264532013007 0ustar billbill/* * jidctint.c * * Copyright (C) 1991-1998, Thomas G. Lane. * Modification developed 2002-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a slow-but-accurate integer implementation of the * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine * must also perform dequantization of the input coefficients. * * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT * on each row (or vice versa, but it's more convenient to emit a row at * a time). Direct algorithms are also available, but they are much more * complex and seem not to be any faster when reduced to code. * * This implementation is based on an algorithm described in * C. Loeffler, A. Ligtenberg and G. Moschytz, "Practical Fast 1-D DCT * Algorithms with 11 Multiplications", Proc. Int'l. Conf. on Acoustics, * Speech, and Signal Processing 1989 (ICASSP '89), pp. 988-991. * The primary algorithm described there uses 11 multiplies and 29 adds. * We use their alternate method with 12 multiplies and 32 adds. * The advantage of this method is that no data path contains more than one * multiplication; this allows a very simple and accurate implementation in * scaled fixed-point arithmetic, with a minimal number of shifts. * * We also provide IDCT routines with various output sample block sizes for * direct resolution reduction or enlargement and for direct resolving the * common 2x1 and 1x2 subsampling cases without additional resampling: NxN * (N=1...16), 2NxN, and Nx2N (N=1...8) pixels for one 8x8 input DCT block. * * For N<8 we simply take the corresponding low-frequency coefficients of * the 8x8 input DCT block and apply an NxN point IDCT on the sub-block * to yield the downscaled outputs. * This can be seen as direct low-pass downsampling from the DCT domain * point of view rather than the usual spatial domain point of view, * yielding significant computational savings and results at least * as good as common bilinear (averaging) spatial downsampling. * * For N>8 we apply a partial NxN IDCT on the 8 input coefficients as * lower frequencies and higher frequencies assumed to be zero. * It turns out that the computational effort is similar to the 8x8 IDCT * regarding the output size. * Furthermore, the scaling and descaling is the same for all IDCT sizes. * * CAUTION: We rely on the FIX() macro except for the N=1,2,4,8 cases * since there would be too many additional constants to pre-calculate. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ #ifdef DCT_ISLOW_SUPPORTED /* * This module is specialized to the case DCTSIZE = 8. */ #if DCTSIZE != 8 Sorry, this code only copes with 8x8 DCT blocks. /* deliberate syntax err */ #endif /* * The poop on this scaling stuff is as follows: * * Each 1-D IDCT step produces outputs which are a factor of sqrt(N) * larger than the true IDCT outputs. The final outputs are therefore * a factor of N larger than desired; since N=8 this can be cured by * a simple right shift at the end of the algorithm. The advantage of * this arrangement is that we save two multiplications per 1-D IDCT, * because the y0 and y4 inputs need not be divided by sqrt(N). * * We have to do addition and subtraction of the integer inputs, which * is no problem, and multiplication by fractional constants, which is * a problem to do in integer arithmetic. We multiply all the constants * by CONST_SCALE and convert them to integer constants (thus retaining * CONST_BITS bits of precision in the constants). After doing a * multiplication we have to divide the product by CONST_SCALE, with proper * rounding, to produce the correct output. This division can be done * cheaply as a right shift of CONST_BITS bits. We postpone shifting * as long as possible so that partial sums can be added together with * full fractional precision. * * The outputs of the first pass are scaled up by PASS1_BITS bits so that * they are represented to better-than-integral precision. These outputs * require BITS_IN_JSAMPLE + PASS1_BITS + 3 bits; this fits in a 16-bit word * with the recommended scaling. (To scale up 12-bit sample data further, an * intermediate INT32 array would be needed.) * * To avoid overflow of the 32-bit intermediate results in pass 2, we must * have BITS_IN_JSAMPLE + CONST_BITS + PASS1_BITS <= 26. Error analysis * shows that the values given below are the most effective. */ #if BITS_IN_JSAMPLE == 8 #define CONST_BITS 13 #define PASS1_BITS 2 #else #define CONST_BITS 13 #define PASS1_BITS 1 /* lose a little precision to avoid overflow */ #endif /* Some C compilers fail to reduce "FIX(constant)" at compile time, thus * causing a lot of useless floating-point operations at run time. * To get around this we use the following pre-calculated constants. * If you change CONST_BITS you may want to add appropriate values. * (With a reasonable C compiler, you can just rely on the FIX() macro...) */ #if CONST_BITS == 13 #define FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */ #define FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */ #define FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */ #define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */ #define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */ #define FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */ #define FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */ #define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */ #define FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */ #define FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */ #define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */ #define FIX_3_072711026 ((INT32) 25172) /* FIX(3.072711026) */ #else #define FIX_0_298631336 FIX(0.298631336) #define FIX_0_390180644 FIX(0.390180644) #define FIX_0_541196100 FIX(0.541196100) #define FIX_0_765366865 FIX(0.765366865) #define FIX_0_899976223 FIX(0.899976223) #define FIX_1_175875602 FIX(1.175875602) #define FIX_1_501321110 FIX(1.501321110) #define FIX_1_847759065 FIX(1.847759065) #define FIX_1_961570560 FIX(1.961570560) #define FIX_2_053119869 FIX(2.053119869) #define FIX_2_562915447 FIX(2.562915447) #define FIX_3_072711026 FIX(3.072711026) #endif /* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. * For 8-bit samples with the recommended scaling, all the variable * and constant values involved are no more than 16 bits wide, so a * 16x16->32 bit multiply can be used instead of a full 32x32 multiply. * For 12-bit samples, a full 32-bit multiplication will be needed. */ #if BITS_IN_JSAMPLE == 8 #define MULTIPLY(var,const) MULTIPLY16C16(var,const) #else #define MULTIPLY(var,const) ((var) * (const)) #endif /* Dequantize a coefficient by multiplying it by the multiplier-table * entry; produce an int result. In this module, both inputs and result * are 16 bits or less, so either int or short multiply will work. */ #define DEQUANTIZE(coef,quantval) (((ISLOW_MULT_TYPE) (coef)) * (quantval)) /* * Perform dequantization and inverse DCT on one block of coefficients. */ GLOBAL(void) jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[DCTSIZE2]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ /* Note results are scaled up by sqrt(8) compared to a true IDCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = DCTSIZE; ctr > 0; ctr--) { /* Due to quantization, we will usually find that many of the input * coefficients are zero, especially the AC terms. We can exploit this * by short-circuiting the IDCT calculation for any column in which all * the AC terms are zero. In that case each output is equal to the * DC coefficient (with scale factor as needed). * With typical images and quantization tables, half or more of the * column DCT calculations can be simplified this way. */ if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) { /* AC terms all zero */ int dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) << PASS1_BITS; wsptr[DCTSIZE*0] = dcval; wsptr[DCTSIZE*1] = dcval; wsptr[DCTSIZE*2] = dcval; wsptr[DCTSIZE*3] = dcval; wsptr[DCTSIZE*4] = dcval; wsptr[DCTSIZE*5] = dcval; wsptr[DCTSIZE*6] = dcval; wsptr[DCTSIZE*7] = dcval; inptr++; /* advance pointers to next column */ quantptr++; wsptr++; continue; } /* Even part: reverse the even part of the forward DCT. */ /* The rotator is sqrt(2)*c(-6). */ z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z1 = MULTIPLY(z2 + z3, FIX_0_541196100); tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865); tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065); z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z2 <<= CONST_BITS; z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z2 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = z2 + z3; tmp1 = z2 - z3; tmp10 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; tmp11 = tmp1 + tmp3; tmp12 = tmp1 - tmp3; /* Odd part per figure 8; the matrix is unitary and hence its * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp1 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); tmp3 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = tmp0 + tmp2; z3 = tmp1 + tmp3; z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */ z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ z2 += z1; z3 += z1; z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ tmp0 += z1 + z2; tmp3 += z1 + z3; z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ tmp1 += z1 + z3; tmp2 += z1 + z2; /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ wsptr[DCTSIZE*0] = (int) RIGHT_SHIFT(tmp10 + tmp3, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*7] = (int) RIGHT_SHIFT(tmp10 - tmp3, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*1] = (int) RIGHT_SHIFT(tmp11 + tmp2, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*6] = (int) RIGHT_SHIFT(tmp11 - tmp2, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*2] = (int) RIGHT_SHIFT(tmp12 + tmp1, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*5] = (int) RIGHT_SHIFT(tmp12 - tmp1, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*3] = (int) RIGHT_SHIFT(tmp13 + tmp0, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*4] = (int) RIGHT_SHIFT(tmp13 - tmp0, CONST_BITS-PASS1_BITS); inptr++; /* advance pointers to next column */ quantptr++; wsptr++; } /* Pass 2: process rows from work array, store into output array. */ /* Note that we must descale the results by a factor of 8 == 2**3, */ /* and also undo the PASS1_BITS scaling. */ wsptr = workspace; for (ctr = 0; ctr < DCTSIZE; ctr++) { outptr = output_buf[ctr] + output_col; /* Rows of zeroes can be exploited in the same way as we did with columns. * However, the column calculation has created many nonzero AC terms, so * the simplification applies less often (typically 5% to 10% of the time). * On machines with very fast multiplication, it's possible that the * test takes more time than it's worth. In that case this section * may be commented out. */ #ifndef NO_ZERO_ROW_TEST if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 && wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) { /* AC terms all zero */ JSAMPLE dcval = range_limit[(int) DESCALE((INT32) wsptr[0], PASS1_BITS+3) & RANGE_MASK]; outptr[0] = dcval; outptr[1] = dcval; outptr[2] = dcval; outptr[3] = dcval; outptr[4] = dcval; outptr[5] = dcval; outptr[6] = dcval; outptr[7] = dcval; wsptr += DCTSIZE; /* advance pointer to next row */ continue; } #endif /* Even part: reverse the even part of the forward DCT. */ /* The rotator is sqrt(2)*c(-6). */ z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[6]; z1 = MULTIPLY(z2 + z3, FIX_0_541196100); tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865); tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065); /* Add fudge factor here for final descale. */ z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 = (INT32) wsptr[4]; tmp0 = (z2 + z3) << CONST_BITS; tmp1 = (z2 - z3) << CONST_BITS; tmp10 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; tmp11 = tmp1 + tmp3; tmp12 = tmp1 - tmp3; /* Odd part per figure 8; the matrix is unitary and hence its * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. */ tmp0 = (INT32) wsptr[7]; tmp1 = (INT32) wsptr[5]; tmp2 = (INT32) wsptr[3]; tmp3 = (INT32) wsptr[1]; z2 = tmp0 + tmp2; z3 = tmp1 + tmp3; z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */ z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ z2 += z1; z3 += z1; z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ tmp0 += z1 + z2; tmp3 += z1 + z3; z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ tmp1 += z1 + z3; tmp2 += z1 + z2; /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp13 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp13 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += DCTSIZE; /* advance pointer to next row */ } } #ifdef IDCT_SCALING_SUPPORTED /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 7x7 output block. * * Optimized algorithm with 12 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/14). */ GLOBAL(void) jpeg_idct_7x7 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp10, tmp11, tmp12, tmp13; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[7*7]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 7; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp13 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp13 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp13 += ONE << (CONST_BITS-PASS1_BITS-1); z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp10 = MULTIPLY(z2 - z3, FIX(0.881747734)); /* c4 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.314692123)); /* c6 */ tmp11 = tmp10 + tmp12 + tmp13 - MULTIPLY(z2, FIX(1.841218003)); /* c2+c4-c6 */ tmp0 = z1 + z3; z2 -= tmp0; tmp0 = MULTIPLY(tmp0, FIX(1.274162392)) + tmp13; /* c2 */ tmp10 += tmp0 - MULTIPLY(z3, FIX(0.077722536)); /* c2-c4-c6 */ tmp12 += tmp0 - MULTIPLY(z1, FIX(2.470602249)); /* c2+c4+c6 */ tmp13 += MULTIPLY(z2, FIX(1.414213562)); /* c0 */ /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp1 = MULTIPLY(z1 + z2, FIX(0.935414347)); /* (c3+c1-c5)/2 */ tmp2 = MULTIPLY(z1 - z2, FIX(0.170262339)); /* (c3+c5-c1)/2 */ tmp0 = tmp1 - tmp2; tmp1 += tmp2; tmp2 = MULTIPLY(z2 + z3, - FIX(1.378756276)); /* -c1 */ tmp1 += tmp2; z2 = MULTIPLY(z1 + z3, FIX(0.613604268)); /* c5 */ tmp0 += z2; tmp2 += z2 + MULTIPLY(z3, FIX(1.870828693)); /* c3+c1-c5 */ /* Final output stage */ wsptr[7*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[7*6] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[7*1] = (int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS-PASS1_BITS); wsptr[7*5] = (int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS-PASS1_BITS); wsptr[7*2] = (int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS-PASS1_BITS); wsptr[7*4] = (int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS-PASS1_BITS); wsptr[7*3] = (int) RIGHT_SHIFT(tmp13, CONST_BITS-PASS1_BITS); } /* Pass 2: process 7 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 7; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp13 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp13 <<= CONST_BITS; z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[4]; z3 = (INT32) wsptr[6]; tmp10 = MULTIPLY(z2 - z3, FIX(0.881747734)); /* c4 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.314692123)); /* c6 */ tmp11 = tmp10 + tmp12 + tmp13 - MULTIPLY(z2, FIX(1.841218003)); /* c2+c4-c6 */ tmp0 = z1 + z3; z2 -= tmp0; tmp0 = MULTIPLY(tmp0, FIX(1.274162392)) + tmp13; /* c2 */ tmp10 += tmp0 - MULTIPLY(z3, FIX(0.077722536)); /* c2-c4-c6 */ tmp12 += tmp0 - MULTIPLY(z1, FIX(2.470602249)); /* c2+c4+c6 */ tmp13 += MULTIPLY(z2, FIX(1.414213562)); /* c0 */ /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; tmp1 = MULTIPLY(z1 + z2, FIX(0.935414347)); /* (c3+c1-c5)/2 */ tmp2 = MULTIPLY(z1 - z2, FIX(0.170262339)); /* (c3+c5-c1)/2 */ tmp0 = tmp1 - tmp2; tmp1 += tmp2; tmp2 = MULTIPLY(z2 + z3, - FIX(1.378756276)); /* -c1 */ tmp1 += tmp2; z2 = MULTIPLY(z1 + z3, FIX(0.613604268)); /* c5 */ tmp0 += z2; tmp2 += z2 + MULTIPLY(z3, FIX(1.870828693)); /* c3+c1-c5 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 7; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 6x6 output block. * * Optimized algorithm with 3 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/12). */ GLOBAL(void) jpeg_idct_6x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp10, tmp11, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[6*6]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 6; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-1); tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp10 = MULTIPLY(tmp2, FIX(0.707106781)); /* c4 */ tmp1 = tmp0 + tmp10; tmp11 = RIGHT_SHIFT(tmp0 - tmp10 - tmp10, CONST_BITS-PASS1_BITS); tmp10 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp0 = MULTIPLY(tmp10, FIX(1.224744871)); /* c2 */ tmp10 = tmp1 + tmp0; tmp12 = tmp1 - tmp0; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp1 = MULTIPLY(z1 + z3, FIX(0.366025404)); /* c5 */ tmp0 = tmp1 + ((z1 + z2) << CONST_BITS); tmp2 = tmp1 + ((z3 - z2) << CONST_BITS); tmp1 = (z1 - z2 - z3) << PASS1_BITS; /* Final output stage */ wsptr[6*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[6*5] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[6*1] = (int) (tmp11 + tmp1); wsptr[6*4] = (int) (tmp11 - tmp1); wsptr[6*2] = (int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS-PASS1_BITS); wsptr[6*3] = (int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS-PASS1_BITS); } /* Pass 2: process 6 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 6; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; tmp2 = (INT32) wsptr[4]; tmp10 = MULTIPLY(tmp2, FIX(0.707106781)); /* c4 */ tmp1 = tmp0 + tmp10; tmp11 = tmp0 - tmp10 - tmp10; tmp10 = (INT32) wsptr[2]; tmp0 = MULTIPLY(tmp10, FIX(1.224744871)); /* c2 */ tmp10 = tmp1 + tmp0; tmp12 = tmp1 - tmp0; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; tmp1 = MULTIPLY(z1 + z3, FIX(0.366025404)); /* c5 */ tmp0 = tmp1 + ((z1 + z2) << CONST_BITS); tmp2 = tmp1 + ((z3 - z2) << CONST_BITS); tmp1 = (z1 - z2 - z3) << CONST_BITS; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 6; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 5x5 output block. * * Optimized algorithm with 5 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/10). */ GLOBAL(void) jpeg_idct_5x5 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp10, tmp11, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[5*5]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 5; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp12 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp12 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp12 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp1 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z1 = MULTIPLY(tmp0 + tmp1, FIX(0.790569415)); /* (c2+c4)/2 */ z2 = MULTIPLY(tmp0 - tmp1, FIX(0.353553391)); /* (c2-c4)/2 */ z3 = tmp12 + z2; tmp10 = z3 + z1; tmp11 = z3 - z1; tmp12 -= z2 << 2; /* Odd part */ z2 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c3 */ tmp0 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c1-c3 */ tmp1 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c1+c3 */ /* Final output stage */ wsptr[5*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[5*4] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[5*1] = (int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS-PASS1_BITS); wsptr[5*3] = (int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS-PASS1_BITS); wsptr[5*2] = (int) RIGHT_SHIFT(tmp12, CONST_BITS-PASS1_BITS); } /* Pass 2: process 5 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 5; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp12 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp12 <<= CONST_BITS; tmp0 = (INT32) wsptr[2]; tmp1 = (INT32) wsptr[4]; z1 = MULTIPLY(tmp0 + tmp1, FIX(0.790569415)); /* (c2+c4)/2 */ z2 = MULTIPLY(tmp0 - tmp1, FIX(0.353553391)); /* (c2-c4)/2 */ z3 = tmp12 + z2; tmp10 = z3 + z1; tmp11 = z3 - z1; tmp12 -= z2 << 2; /* Odd part */ z2 = (INT32) wsptr[1]; z3 = (INT32) wsptr[3]; z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c3 */ tmp0 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c1-c3 */ tmp1 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c1+c3 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 5; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 4x4 output block. * * Optimized algorithm with 3 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT]. */ GLOBAL(void) jpeg_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp2, tmp10, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[4*4]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 4; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp10 = (tmp0 + tmp2) << PASS1_BITS; tmp12 = (tmp0 - tmp2) << PASS1_BITS; /* Odd part */ /* Same rotation as in the even part of the 8x8 LL&M IDCT */ z2 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z1 = MULTIPLY(z2 + z3, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = RIGHT_SHIFT(z1 + MULTIPLY(z2, FIX_0_765366865), /* c2-c6 */ CONST_BITS-PASS1_BITS); tmp2 = RIGHT_SHIFT(z1 - MULTIPLY(z3, FIX_1_847759065), /* c2+c6 */ CONST_BITS-PASS1_BITS); /* Final output stage */ wsptr[4*0] = (int) (tmp10 + tmp0); wsptr[4*3] = (int) (tmp10 - tmp0); wsptr[4*1] = (int) (tmp12 + tmp2); wsptr[4*2] = (int) (tmp12 - tmp2); } /* Pass 2: process 4 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 4; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp2 = (INT32) wsptr[2]; tmp10 = (tmp0 + tmp2) << CONST_BITS; tmp12 = (tmp0 - tmp2) << CONST_BITS; /* Odd part */ /* Same rotation as in the even part of the 8x8 LL&M IDCT */ z2 = (INT32) wsptr[1]; z3 = (INT32) wsptr[3]; z1 = MULTIPLY(z2 + z3, FIX_0_541196100); /* c6 */ tmp0 = z1 + MULTIPLY(z2, FIX_0_765366865); /* c2-c6 */ tmp2 = z1 - MULTIPLY(z3, FIX_1_847759065); /* c2+c6 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 4; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 3x3 output block. * * Optimized algorithm with 2 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/6). */ GLOBAL(void) jpeg_idct_3x3 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp2, tmp10, tmp12; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[3*3]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 3; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-1); tmp2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp12 = MULTIPLY(tmp2, FIX(0.707106781)); /* c2 */ tmp10 = tmp0 + tmp12; tmp2 = tmp0 - tmp12 - tmp12; /* Odd part */ tmp12 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); tmp0 = MULTIPLY(tmp12, FIX(1.224744871)); /* c1 */ /* Final output stage */ wsptr[3*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[3*2] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[3*1] = (int) RIGHT_SHIFT(tmp2, CONST_BITS-PASS1_BITS); } /* Pass 2: process 3 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 3; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; tmp2 = (INT32) wsptr[2]; tmp12 = MULTIPLY(tmp2, FIX(0.707106781)); /* c2 */ tmp10 = tmp0 + tmp12; tmp2 = tmp0 - tmp12 - tmp12; /* Odd part */ tmp12 = (INT32) wsptr[1]; tmp0 = MULTIPLY(tmp12, FIX(1.224744871)); /* c1 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 3; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 2x2 output block. * * Multiplication-less algorithm. */ GLOBAL(void) jpeg_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5; ISLOW_MULT_TYPE * quantptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); SHIFT_TEMPS /* Pass 1: process columns from input. */ quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; /* Column 0 */ tmp4 = DEQUANTIZE(coef_block[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp5 = DEQUANTIZE(coef_block[DCTSIZE*1], quantptr[DCTSIZE*1]); /* Add fudge factor here for final descale. */ tmp4 += ONE << 2; tmp0 = tmp4 + tmp5; tmp2 = tmp4 - tmp5; /* Column 1 */ tmp4 = DEQUANTIZE(coef_block[DCTSIZE*0+1], quantptr[DCTSIZE*0+1]); tmp5 = DEQUANTIZE(coef_block[DCTSIZE*1+1], quantptr[DCTSIZE*1+1]); tmp1 = tmp4 + tmp5; tmp3 = tmp4 - tmp5; /* Pass 2: process 2 rows, store into output array. */ /* Row 0 */ outptr = output_buf[0] + output_col; outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp0 + tmp1, 3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp0 - tmp1, 3) & RANGE_MASK]; /* Row 1 */ outptr = output_buf[1] + output_col; outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp2 + tmp3, 3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp2 - tmp3, 3) & RANGE_MASK]; } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 1x1 output block. * * We hardly need an inverse DCT routine for this: just take the * average pixel value, which is one-eighth of the DC coefficient. */ GLOBAL(void) jpeg_idct_1x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { int dcval; ISLOW_MULT_TYPE * quantptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); SHIFT_TEMPS /* 1x1 is trivial: just take the DC coefficient divided by 8. */ quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; dcval = DEQUANTIZE(coef_block[0], quantptr[0]); dcval = (int) DESCALE((INT32) dcval, 3); output_buf[0][output_col] = range_limit[dcval & RANGE_MASK]; } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 9x9 output block. * * Optimized algorithm with 10 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/18). */ GLOBAL(void) jpeg_idct_9x9 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp10, tmp11, tmp12, tmp13, tmp14; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*9]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-1); z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp3 = MULTIPLY(z3, FIX(0.707106781)); /* c6 */ tmp1 = tmp0 + tmp3; tmp2 = tmp0 - tmp3 - tmp3; tmp0 = MULTIPLY(z1 - z2, FIX(0.707106781)); /* c6 */ tmp11 = tmp2 + tmp0; tmp14 = tmp2 - tmp0 - tmp0; tmp0 = MULTIPLY(z1 + z2, FIX(1.328926049)); /* c2 */ tmp2 = MULTIPLY(z1, FIX(1.083350441)); /* c4 */ tmp3 = MULTIPLY(z2, FIX(0.245575608)); /* c8 */ tmp10 = tmp1 + tmp0 - tmp3; tmp12 = tmp1 - tmp0 + tmp2; tmp13 = tmp1 - tmp2 + tmp3; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); z2 = MULTIPLY(z2, - FIX(1.224744871)); /* -c3 */ tmp2 = MULTIPLY(z1 + z3, FIX(0.909038955)); /* c5 */ tmp3 = MULTIPLY(z1 + z4, FIX(0.483689525)); /* c7 */ tmp0 = tmp2 + tmp3 - z2; tmp1 = MULTIPLY(z3 - z4, FIX(1.392728481)); /* c1 */ tmp2 += z2 - tmp1; tmp3 += z2 + tmp1; tmp1 = MULTIPLY(z1 - z3 - z4, FIX(1.224744871)); /* c3 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp13 + tmp3, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp13 - tmp3, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp14, CONST_BITS-PASS1_BITS); } /* Pass 2: process 9 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 9; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[4]; z3 = (INT32) wsptr[6]; tmp3 = MULTIPLY(z3, FIX(0.707106781)); /* c6 */ tmp1 = tmp0 + tmp3; tmp2 = tmp0 - tmp3 - tmp3; tmp0 = MULTIPLY(z1 - z2, FIX(0.707106781)); /* c6 */ tmp11 = tmp2 + tmp0; tmp14 = tmp2 - tmp0 - tmp0; tmp0 = MULTIPLY(z1 + z2, FIX(1.328926049)); /* c2 */ tmp2 = MULTIPLY(z1, FIX(1.083350441)); /* c4 */ tmp3 = MULTIPLY(z2, FIX(0.245575608)); /* c8 */ tmp10 = tmp1 + tmp0 - tmp3; tmp12 = tmp1 - tmp0 + tmp2; tmp13 = tmp1 - tmp2 + tmp3; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; z2 = MULTIPLY(z2, - FIX(1.224744871)); /* -c3 */ tmp2 = MULTIPLY(z1 + z3, FIX(0.909038955)); /* c5 */ tmp3 = MULTIPLY(z1 + z4, FIX(0.483689525)); /* c7 */ tmp0 = tmp2 + tmp3 - z2; tmp1 = MULTIPLY(z3 - z4, FIX(1.392728481)); /* c1 */ tmp2 += z2 - tmp1; tmp3 += z2 + tmp1; tmp1 = MULTIPLY(z1 - z3 - z4, FIX(1.224744871)); /* c3 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp13 + tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp13 - tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 10x10 output block. * * Optimized algorithm with 12 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/20). */ GLOBAL(void) jpeg_idct_10x10 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14; INT32 tmp20, tmp21, tmp22, tmp23, tmp24; INT32 z1, z2, z3, z4, z5; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*10]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z3 += ONE << (CONST_BITS-PASS1_BITS-1); z4 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z1 = MULTIPLY(z4, FIX(1.144122806)); /* c4 */ z2 = MULTIPLY(z4, FIX(0.437016024)); /* c8 */ tmp10 = z3 + z1; tmp11 = z3 - z2; tmp22 = RIGHT_SHIFT(z3 - ((z1 - z2) << 1), /* c0 = (c4-c8)*2 */ CONST_BITS-PASS1_BITS); z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c6 */ tmp12 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c2-c6 */ tmp13 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c2+c6 */ tmp20 = tmp10 + tmp12; tmp24 = tmp10 - tmp12; tmp21 = tmp11 + tmp13; tmp23 = tmp11 - tmp13; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = z2 + z4; tmp13 = z2 - z4; tmp12 = MULTIPLY(tmp13, FIX(0.309016994)); /* (c3-c7)/2 */ z5 = z3 << CONST_BITS; z2 = MULTIPLY(tmp11, FIX(0.951056516)); /* (c3+c7)/2 */ z4 = z5 + tmp12; tmp10 = MULTIPLY(z1, FIX(1.396802247)) + z2 + z4; /* c1 */ tmp14 = MULTIPLY(z1, FIX(0.221231742)) - z2 + z4; /* c9 */ z2 = MULTIPLY(tmp11, FIX(0.587785252)); /* (c1-c9)/2 */ z4 = z5 - tmp12 - (tmp13 << (CONST_BITS - 1)); tmp12 = (z1 - tmp13 - z3) << PASS1_BITS; tmp11 = MULTIPLY(z1, FIX(1.260073511)) - z2 - z4; /* c3 */ tmp13 = MULTIPLY(z1, FIX(0.642039522)) - z2 + z4; /* c7 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) (tmp22 + tmp12); wsptr[8*7] = (int) (tmp22 - tmp12); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); } /* Pass 2: process 10 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 10; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 <<= CONST_BITS; z4 = (INT32) wsptr[4]; z1 = MULTIPLY(z4, FIX(1.144122806)); /* c4 */ z2 = MULTIPLY(z4, FIX(0.437016024)); /* c8 */ tmp10 = z3 + z1; tmp11 = z3 - z2; tmp22 = z3 - ((z1 - z2) << 1); /* c0 = (c4-c8)*2 */ z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[6]; z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c6 */ tmp12 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c2-c6 */ tmp13 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c2+c6 */ tmp20 = tmp10 + tmp12; tmp24 = tmp10 - tmp12; tmp21 = tmp11 + tmp13; tmp23 = tmp11 - tmp13; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z3 <<= CONST_BITS; z4 = (INT32) wsptr[7]; tmp11 = z2 + z4; tmp13 = z2 - z4; tmp12 = MULTIPLY(tmp13, FIX(0.309016994)); /* (c3-c7)/2 */ z2 = MULTIPLY(tmp11, FIX(0.951056516)); /* (c3+c7)/2 */ z4 = z3 + tmp12; tmp10 = MULTIPLY(z1, FIX(1.396802247)) + z2 + z4; /* c1 */ tmp14 = MULTIPLY(z1, FIX(0.221231742)) - z2 + z4; /* c9 */ z2 = MULTIPLY(tmp11, FIX(0.587785252)); /* (c1-c9)/2 */ z4 = z3 - tmp12 - (tmp13 << (CONST_BITS - 1)); tmp12 = ((z1 - tmp13) << CONST_BITS) - z3; tmp11 = MULTIPLY(z1, FIX(1.260073511)) - z2 - z4; /* c3 */ tmp13 = MULTIPLY(z1, FIX(0.642039522)) - z2 + z4; /* c7 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 11x11 output block. * * Optimized algorithm with 24 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/22). */ GLOBAL(void) jpeg_idct_11x11 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*11]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp10 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp10 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp10 += ONE << (CONST_BITS-PASS1_BITS-1); z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp20 = MULTIPLY(z2 - z3, FIX(2.546640132)); /* c2+c4 */ tmp23 = MULTIPLY(z2 - z1, FIX(0.430815045)); /* c2-c6 */ z4 = z1 + z3; tmp24 = MULTIPLY(z4, - FIX(1.155664402)); /* -(c2-c10) */ z4 -= z2; tmp25 = tmp10 + MULTIPLY(z4, FIX(1.356927976)); /* c2 */ tmp21 = tmp20 + tmp23 + tmp25 - MULTIPLY(z2, FIX(1.821790775)); /* c2+c4+c10-c6 */ tmp20 += tmp25 + MULTIPLY(z3, FIX(2.115825087)); /* c4+c6 */ tmp23 += tmp25 - MULTIPLY(z1, FIX(1.513598477)); /* c6+c8 */ tmp24 += tmp25; tmp22 = tmp24 - MULTIPLY(z3, FIX(0.788749120)); /* c8+c10 */ tmp24 += MULTIPLY(z2, FIX(1.944413522)) - /* c2+c8 */ MULTIPLY(z1, FIX(1.390975730)); /* c4+c10 */ tmp25 = tmp10 - MULTIPLY(z4, FIX(1.414213562)); /* c0 */ /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = z1 + z2; tmp14 = MULTIPLY(tmp11 + z3 + z4, FIX(0.398430003)); /* c9 */ tmp11 = MULTIPLY(tmp11, FIX(0.887983902)); /* c3-c9 */ tmp12 = MULTIPLY(z1 + z3, FIX(0.670361295)); /* c5-c9 */ tmp13 = tmp14 + MULTIPLY(z1 + z4, FIX(0.366151574)); /* c7-c9 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(z1, FIX(0.923107866)); /* c7+c5+c3-c1-2*c9 */ z1 = tmp14 - MULTIPLY(z2 + z3, FIX(1.163011579)); /* c7+c9 */ tmp11 += z1 + MULTIPLY(z2, FIX(2.073276588)); /* c1+c7+3*c9-c3 */ tmp12 += z1 - MULTIPLY(z3, FIX(1.192193623)); /* c3+c5-c7-c9 */ z1 = MULTIPLY(z2 + z4, - FIX(1.798248910)); /* -(c1+c9) */ tmp11 += z1; tmp13 += z1 + MULTIPLY(z4, FIX(2.102458632)); /* c1+c5+c9-c7 */ tmp14 += MULTIPLY(z2, - FIX(1.467221301)) + /* -(c5+c9) */ MULTIPLY(z3, FIX(1.001388905)) - /* c1-c9 */ MULTIPLY(z4, FIX(1.684843907)); /* c3+c9 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*10] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25, CONST_BITS-PASS1_BITS); } /* Pass 2: process 11 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 11; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp10 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp10 <<= CONST_BITS; z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[4]; z3 = (INT32) wsptr[6]; tmp20 = MULTIPLY(z2 - z3, FIX(2.546640132)); /* c2+c4 */ tmp23 = MULTIPLY(z2 - z1, FIX(0.430815045)); /* c2-c6 */ z4 = z1 + z3; tmp24 = MULTIPLY(z4, - FIX(1.155664402)); /* -(c2-c10) */ z4 -= z2; tmp25 = tmp10 + MULTIPLY(z4, FIX(1.356927976)); /* c2 */ tmp21 = tmp20 + tmp23 + tmp25 - MULTIPLY(z2, FIX(1.821790775)); /* c2+c4+c10-c6 */ tmp20 += tmp25 + MULTIPLY(z3, FIX(2.115825087)); /* c4+c6 */ tmp23 += tmp25 - MULTIPLY(z1, FIX(1.513598477)); /* c6+c8 */ tmp24 += tmp25; tmp22 = tmp24 - MULTIPLY(z3, FIX(0.788749120)); /* c8+c10 */ tmp24 += MULTIPLY(z2, FIX(1.944413522)) - /* c2+c8 */ MULTIPLY(z1, FIX(1.390975730)); /* c4+c10 */ tmp25 = tmp10 - MULTIPLY(z4, FIX(1.414213562)); /* c0 */ /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; tmp11 = z1 + z2; tmp14 = MULTIPLY(tmp11 + z3 + z4, FIX(0.398430003)); /* c9 */ tmp11 = MULTIPLY(tmp11, FIX(0.887983902)); /* c3-c9 */ tmp12 = MULTIPLY(z1 + z3, FIX(0.670361295)); /* c5-c9 */ tmp13 = tmp14 + MULTIPLY(z1 + z4, FIX(0.366151574)); /* c7-c9 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(z1, FIX(0.923107866)); /* c7+c5+c3-c1-2*c9 */ z1 = tmp14 - MULTIPLY(z2 + z3, FIX(1.163011579)); /* c7+c9 */ tmp11 += z1 + MULTIPLY(z2, FIX(2.073276588)); /* c1+c7+3*c9-c3 */ tmp12 += z1 - MULTIPLY(z3, FIX(1.192193623)); /* c3+c5-c7-c9 */ z1 = MULTIPLY(z2 + z4, - FIX(1.798248910)); /* -(c1+c9) */ tmp11 += z1; tmp13 += z1 + MULTIPLY(z4, FIX(2.102458632)); /* c1+c5+c9-c7 */ tmp14 += MULTIPLY(z2, - FIX(1.467221301)) + /* -(c5+c9) */ MULTIPLY(z3, FIX(1.001388905)) - /* c1-c9 */ MULTIPLY(z4, FIX(1.684843907)); /* c3+c9 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 12x12 output block. * * Optimized algorithm with 15 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/24). */ GLOBAL(void) jpeg_idct_12x12 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*12]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z3 += ONE << (CONST_BITS-PASS1_BITS-1); z4 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z4 = MULTIPLY(z4, FIX(1.224744871)); /* c4 */ tmp10 = z3 + z4; tmp11 = z3 - z4; z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z4 = MULTIPLY(z1, FIX(1.366025404)); /* c2 */ z1 <<= CONST_BITS; z2 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z2 <<= CONST_BITS; tmp12 = z1 - z2; tmp21 = z3 + tmp12; tmp24 = z3 - tmp12; tmp12 = z4 + z2; tmp20 = tmp10 + tmp12; tmp25 = tmp10 - tmp12; tmp12 = z4 - z1 - z2; tmp22 = tmp11 + tmp12; tmp23 = tmp11 - tmp12; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = MULTIPLY(z2, FIX(1.306562965)); /* c3 */ tmp14 = MULTIPLY(z2, - FIX_0_541196100); /* -c9 */ tmp10 = z1 + z3; tmp15 = MULTIPLY(tmp10 + z4, FIX(0.860918669)); /* c7 */ tmp12 = tmp15 + MULTIPLY(tmp10, FIX(0.261052384)); /* c5-c7 */ tmp10 = tmp12 + tmp11 + MULTIPLY(z1, FIX(0.280143716)); /* c1-c5 */ tmp13 = MULTIPLY(z3 + z4, - FIX(1.045510580)); /* -(c7+c11) */ tmp12 += tmp13 + tmp14 - MULTIPLY(z3, FIX(1.478575242)); /* c1+c5-c7-c11 */ tmp13 += tmp15 - tmp11 + MULTIPLY(z4, FIX(1.586706681)); /* c1+c11 */ tmp15 += tmp14 - MULTIPLY(z1, FIX(0.676326758)) - /* c7-c11 */ MULTIPLY(z4, FIX(1.982889723)); /* c5+c7 */ z1 -= z4; z2 -= z3; z3 = MULTIPLY(z1 + z2, FIX_0_541196100); /* c9 */ tmp11 = z3 + MULTIPLY(z1, FIX_0_765366865); /* c3-c9 */ tmp14 = z3 - MULTIPLY(z2, FIX_1_847759065); /* c3+c9 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*11] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*10] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS-PASS1_BITS); } /* Pass 2: process 12 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 12; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 <<= CONST_BITS; z4 = (INT32) wsptr[4]; z4 = MULTIPLY(z4, FIX(1.224744871)); /* c4 */ tmp10 = z3 + z4; tmp11 = z3 - z4; z1 = (INT32) wsptr[2]; z4 = MULTIPLY(z1, FIX(1.366025404)); /* c2 */ z1 <<= CONST_BITS; z2 = (INT32) wsptr[6]; z2 <<= CONST_BITS; tmp12 = z1 - z2; tmp21 = z3 + tmp12; tmp24 = z3 - tmp12; tmp12 = z4 + z2; tmp20 = tmp10 + tmp12; tmp25 = tmp10 - tmp12; tmp12 = z4 - z1 - z2; tmp22 = tmp11 + tmp12; tmp23 = tmp11 - tmp12; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; tmp11 = MULTIPLY(z2, FIX(1.306562965)); /* c3 */ tmp14 = MULTIPLY(z2, - FIX_0_541196100); /* -c9 */ tmp10 = z1 + z3; tmp15 = MULTIPLY(tmp10 + z4, FIX(0.860918669)); /* c7 */ tmp12 = tmp15 + MULTIPLY(tmp10, FIX(0.261052384)); /* c5-c7 */ tmp10 = tmp12 + tmp11 + MULTIPLY(z1, FIX(0.280143716)); /* c1-c5 */ tmp13 = MULTIPLY(z3 + z4, - FIX(1.045510580)); /* -(c7+c11) */ tmp12 += tmp13 + tmp14 - MULTIPLY(z3, FIX(1.478575242)); /* c1+c5-c7-c11 */ tmp13 += tmp15 - tmp11 + MULTIPLY(z4, FIX(1.586706681)); /* c1+c11 */ tmp15 += tmp14 - MULTIPLY(z1, FIX(0.676326758)) - /* c7-c11 */ MULTIPLY(z4, FIX(1.982889723)); /* c5+c7 */ z1 -= z4; z2 -= z3; z3 = MULTIPLY(z1 + z2, FIX_0_541196100); /* c9 */ tmp11 = z3 + MULTIPLY(z1, FIX_0_765366865); /* c3-c9 */ tmp14 = z3 - MULTIPLY(z2, FIX_1_847759065); /* c3+c9 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 13x13 output block. * * Optimized algorithm with 29 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/26). */ GLOBAL(void) jpeg_idct_13x13 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*13]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z1 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z1 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z4 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp10 = z3 + z4; tmp11 = z3 - z4; tmp12 = MULTIPLY(tmp10, FIX(1.155388986)); /* (c4+c6)/2 */ tmp13 = MULTIPLY(tmp11, FIX(0.096834934)) + z1; /* (c4-c6)/2 */ tmp20 = MULTIPLY(z2, FIX(1.373119086)) + tmp12 + tmp13; /* c2 */ tmp22 = MULTIPLY(z2, FIX(0.501487041)) - tmp12 + tmp13; /* c10 */ tmp12 = MULTIPLY(tmp10, FIX(0.316450131)); /* (c8-c12)/2 */ tmp13 = MULTIPLY(tmp11, FIX(0.486914739)) + z1; /* (c8+c12)/2 */ tmp21 = MULTIPLY(z2, FIX(1.058554052)) - tmp12 + tmp13; /* c6 */ tmp25 = MULTIPLY(z2, - FIX(1.252223920)) + tmp12 + tmp13; /* c4 */ tmp12 = MULTIPLY(tmp10, FIX(0.435816023)); /* (c2-c10)/2 */ tmp13 = MULTIPLY(tmp11, FIX(0.937303064)) - z1; /* (c2+c10)/2 */ tmp23 = MULTIPLY(z2, - FIX(0.170464608)) - tmp12 - tmp13; /* c12 */ tmp24 = MULTIPLY(z2, - FIX(0.803364869)) + tmp12 - tmp13; /* c8 */ tmp26 = MULTIPLY(tmp11 - z2, FIX(1.414213562)) + z1; /* c0 */ /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = MULTIPLY(z1 + z2, FIX(1.322312651)); /* c3 */ tmp12 = MULTIPLY(z1 + z3, FIX(1.163874945)); /* c5 */ tmp15 = z1 + z4; tmp13 = MULTIPLY(tmp15, FIX(0.937797057)); /* c7 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(z1, FIX(2.020082300)); /* c7+c5+c3-c1 */ tmp14 = MULTIPLY(z2 + z3, - FIX(0.338443458)); /* -c11 */ tmp11 += tmp14 + MULTIPLY(z2, FIX(0.837223564)); /* c5+c9+c11-c3 */ tmp12 += tmp14 - MULTIPLY(z3, FIX(1.572116027)); /* c1+c5-c9-c11 */ tmp14 = MULTIPLY(z2 + z4, - FIX(1.163874945)); /* -c5 */ tmp11 += tmp14; tmp13 += tmp14 + MULTIPLY(z4, FIX(2.205608352)); /* c3+c5+c9-c7 */ tmp14 = MULTIPLY(z3 + z4, - FIX(0.657217813)); /* -c9 */ tmp12 += tmp14; tmp13 += tmp14; tmp15 = MULTIPLY(tmp15, FIX(0.338443458)); /* c11 */ tmp14 = tmp15 + MULTIPLY(z1, FIX(0.318774355)) - /* c9-c11 */ MULTIPLY(z2, FIX(0.466105296)); /* c1-c7 */ z1 = MULTIPLY(z3 - z2, FIX(0.937797057)); /* c7 */ tmp14 += z1; tmp15 += z1 + MULTIPLY(z3, FIX(0.384515595)) - /* c3-c7 */ MULTIPLY(z4, FIX(1.742345811)); /* c1+c11 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*12] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*11] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*10] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp26, CONST_BITS-PASS1_BITS); } /* Pass 2: process 13 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 13; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z1 <<= CONST_BITS; z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[4]; z4 = (INT32) wsptr[6]; tmp10 = z3 + z4; tmp11 = z3 - z4; tmp12 = MULTIPLY(tmp10, FIX(1.155388986)); /* (c4+c6)/2 */ tmp13 = MULTIPLY(tmp11, FIX(0.096834934)) + z1; /* (c4-c6)/2 */ tmp20 = MULTIPLY(z2, FIX(1.373119086)) + tmp12 + tmp13; /* c2 */ tmp22 = MULTIPLY(z2, FIX(0.501487041)) - tmp12 + tmp13; /* c10 */ tmp12 = MULTIPLY(tmp10, FIX(0.316450131)); /* (c8-c12)/2 */ tmp13 = MULTIPLY(tmp11, FIX(0.486914739)) + z1; /* (c8+c12)/2 */ tmp21 = MULTIPLY(z2, FIX(1.058554052)) - tmp12 + tmp13; /* c6 */ tmp25 = MULTIPLY(z2, - FIX(1.252223920)) + tmp12 + tmp13; /* c4 */ tmp12 = MULTIPLY(tmp10, FIX(0.435816023)); /* (c2-c10)/2 */ tmp13 = MULTIPLY(tmp11, FIX(0.937303064)) - z1; /* (c2+c10)/2 */ tmp23 = MULTIPLY(z2, - FIX(0.170464608)) - tmp12 - tmp13; /* c12 */ tmp24 = MULTIPLY(z2, - FIX(0.803364869)) + tmp12 - tmp13; /* c8 */ tmp26 = MULTIPLY(tmp11 - z2, FIX(1.414213562)) + z1; /* c0 */ /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; tmp11 = MULTIPLY(z1 + z2, FIX(1.322312651)); /* c3 */ tmp12 = MULTIPLY(z1 + z3, FIX(1.163874945)); /* c5 */ tmp15 = z1 + z4; tmp13 = MULTIPLY(tmp15, FIX(0.937797057)); /* c7 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(z1, FIX(2.020082300)); /* c7+c5+c3-c1 */ tmp14 = MULTIPLY(z2 + z3, - FIX(0.338443458)); /* -c11 */ tmp11 += tmp14 + MULTIPLY(z2, FIX(0.837223564)); /* c5+c9+c11-c3 */ tmp12 += tmp14 - MULTIPLY(z3, FIX(1.572116027)); /* c1+c5-c9-c11 */ tmp14 = MULTIPLY(z2 + z4, - FIX(1.163874945)); /* -c5 */ tmp11 += tmp14; tmp13 += tmp14 + MULTIPLY(z4, FIX(2.205608352)); /* c3+c5+c9-c7 */ tmp14 = MULTIPLY(z3 + z4, - FIX(0.657217813)); /* -c9 */ tmp12 += tmp14; tmp13 += tmp14; tmp15 = MULTIPLY(tmp15, FIX(0.338443458)); /* c11 */ tmp14 = tmp15 + MULTIPLY(z1, FIX(0.318774355)) - /* c9-c11 */ MULTIPLY(z2, FIX(0.466105296)); /* c1-c7 */ z1 = MULTIPLY(z3 - z2, FIX(0.937797057)); /* c7 */ tmp14 += z1; tmp15 += z1 + MULTIPLY(z3, FIX(0.384515595)) - /* c3-c7 */ MULTIPLY(z4, FIX(1.742345811)); /* c1+c11 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[12] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp26, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 14x14 output block. * * Optimized algorithm with 20 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/28). */ GLOBAL(void) jpeg_idct_14x14 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*14]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z1 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z1 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); z4 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z2 = MULTIPLY(z4, FIX(1.274162392)); /* c4 */ z3 = MULTIPLY(z4, FIX(0.314692123)); /* c12 */ z4 = MULTIPLY(z4, FIX(0.881747734)); /* c8 */ tmp10 = z1 + z2; tmp11 = z1 + z3; tmp12 = z1 - z4; tmp23 = RIGHT_SHIFT(z1 - ((z2 + z3 - z4) << 1), /* c0 = (c4+c12-c8)*2 */ CONST_BITS-PASS1_BITS); z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z3 = MULTIPLY(z1 + z2, FIX(1.105676686)); /* c6 */ tmp13 = z3 + MULTIPLY(z1, FIX(0.273079590)); /* c2-c6 */ tmp14 = z3 - MULTIPLY(z2, FIX(1.719280954)); /* c6+c10 */ tmp15 = MULTIPLY(z1, FIX(0.613604268)) - /* c10 */ MULTIPLY(z2, FIX(1.378756276)); /* c2 */ tmp20 = tmp10 + tmp13; tmp26 = tmp10 - tmp13; tmp21 = tmp11 + tmp14; tmp25 = tmp11 - tmp14; tmp22 = tmp12 + tmp15; tmp24 = tmp12 - tmp15; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp13 = z4 << CONST_BITS; tmp14 = z1 + z3; tmp11 = MULTIPLY(z1 + z2, FIX(1.334852607)); /* c3 */ tmp12 = MULTIPLY(tmp14, FIX(1.197448846)); /* c5 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(z1, FIX(1.126980169)); /* c3+c5-c1 */ tmp14 = MULTIPLY(tmp14, FIX(0.752406978)); /* c9 */ tmp16 = tmp14 - MULTIPLY(z1, FIX(1.061150426)); /* c9+c11-c13 */ z1 -= z2; tmp15 = MULTIPLY(z1, FIX(0.467085129)) - tmp13; /* c11 */ tmp16 += tmp15; z1 += z4; z4 = MULTIPLY(z2 + z3, - FIX(0.158341681)) - tmp13; /* -c13 */ tmp11 += z4 - MULTIPLY(z2, FIX(0.424103948)); /* c3-c9-c13 */ tmp12 += z4 - MULTIPLY(z3, FIX(2.373959773)); /* c3+c5-c13 */ z4 = MULTIPLY(z3 - z2, FIX(1.405321284)); /* c1 */ tmp14 += z4 + tmp13 - MULTIPLY(z3, FIX(1.6906431334)); /* c1+c9-c11 */ tmp15 += z4 + MULTIPLY(z2, FIX(0.674957567)); /* c1+c11-c5 */ tmp13 = (z1 - z3) << PASS1_BITS; /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*13] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*12] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*11] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) (tmp23 + tmp13); wsptr[8*10] = (int) (tmp23 - tmp13); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp26 + tmp16, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp26 - tmp16, CONST_BITS-PASS1_BITS); } /* Pass 2: process 14 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 14; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z1 <<= CONST_BITS; z4 = (INT32) wsptr[4]; z2 = MULTIPLY(z4, FIX(1.274162392)); /* c4 */ z3 = MULTIPLY(z4, FIX(0.314692123)); /* c12 */ z4 = MULTIPLY(z4, FIX(0.881747734)); /* c8 */ tmp10 = z1 + z2; tmp11 = z1 + z3; tmp12 = z1 - z4; tmp23 = z1 - ((z2 + z3 - z4) << 1); /* c0 = (c4+c12-c8)*2 */ z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[6]; z3 = MULTIPLY(z1 + z2, FIX(1.105676686)); /* c6 */ tmp13 = z3 + MULTIPLY(z1, FIX(0.273079590)); /* c2-c6 */ tmp14 = z3 - MULTIPLY(z2, FIX(1.719280954)); /* c6+c10 */ tmp15 = MULTIPLY(z1, FIX(0.613604268)) - /* c10 */ MULTIPLY(z2, FIX(1.378756276)); /* c2 */ tmp20 = tmp10 + tmp13; tmp26 = tmp10 - tmp13; tmp21 = tmp11 + tmp14; tmp25 = tmp11 - tmp14; tmp22 = tmp12 + tmp15; tmp24 = tmp12 - tmp15; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; z4 <<= CONST_BITS; tmp14 = z1 + z3; tmp11 = MULTIPLY(z1 + z2, FIX(1.334852607)); /* c3 */ tmp12 = MULTIPLY(tmp14, FIX(1.197448846)); /* c5 */ tmp10 = tmp11 + tmp12 + z4 - MULTIPLY(z1, FIX(1.126980169)); /* c3+c5-c1 */ tmp14 = MULTIPLY(tmp14, FIX(0.752406978)); /* c9 */ tmp16 = tmp14 - MULTIPLY(z1, FIX(1.061150426)); /* c9+c11-c13 */ z1 -= z2; tmp15 = MULTIPLY(z1, FIX(0.467085129)) - z4; /* c11 */ tmp16 += tmp15; tmp13 = MULTIPLY(z2 + z3, - FIX(0.158341681)) - z4; /* -c13 */ tmp11 += tmp13 - MULTIPLY(z2, FIX(0.424103948)); /* c3-c9-c13 */ tmp12 += tmp13 - MULTIPLY(z3, FIX(2.373959773)); /* c3+c5-c13 */ tmp13 = MULTIPLY(z3 - z2, FIX(1.405321284)); /* c1 */ tmp14 += tmp13 + z4 - MULTIPLY(z3, FIX(1.6906431334)); /* c1+c9-c11 */ tmp15 += tmp13 + MULTIPLY(z2, FIX(0.674957567)); /* c1+c11-c5 */ tmp13 = ((z1 - z3) << CONST_BITS) + z4; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[13] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[12] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp26 + tmp16, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp26 - tmp16, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 15x15 output block. * * Optimized algorithm with 22 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/30). */ GLOBAL(void) jpeg_idct_15x15 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26, tmp27; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*15]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z1 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z1 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z4 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp10 = MULTIPLY(z4, FIX(0.437016024)); /* c12 */ tmp11 = MULTIPLY(z4, FIX(1.144122806)); /* c6 */ tmp12 = z1 - tmp10; tmp13 = z1 + tmp11; z1 -= (tmp11 - tmp10) << 1; /* c0 = (c6-c12)*2 */ z4 = z2 - z3; z3 += z2; tmp10 = MULTIPLY(z3, FIX(1.337628990)); /* (c2+c4)/2 */ tmp11 = MULTIPLY(z4, FIX(0.045680613)); /* (c2-c4)/2 */ z2 = MULTIPLY(z2, FIX(1.439773946)); /* c4+c14 */ tmp20 = tmp13 + tmp10 + tmp11; tmp23 = tmp12 - tmp10 + tmp11 + z2; tmp10 = MULTIPLY(z3, FIX(0.547059574)); /* (c8+c14)/2 */ tmp11 = MULTIPLY(z4, FIX(0.399234004)); /* (c8-c14)/2 */ tmp25 = tmp13 - tmp10 - tmp11; tmp26 = tmp12 + tmp10 - tmp11 - z2; tmp10 = MULTIPLY(z3, FIX(0.790569415)); /* (c6+c12)/2 */ tmp11 = MULTIPLY(z4, FIX(0.353553391)); /* (c6-c12)/2 */ tmp21 = tmp12 + tmp10 + tmp11; tmp24 = tmp13 - tmp10 + tmp11; tmp11 += tmp11; tmp22 = z1 + tmp11; /* c10 = c6-c12 */ tmp27 = z1 - tmp11 - tmp11; /* c0 = (c6-c12)*2 */ /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z4 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z3 = MULTIPLY(z4, FIX(1.224744871)); /* c5 */ z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp13 = z2 - z4; tmp15 = MULTIPLY(z1 + tmp13, FIX(0.831253876)); /* c9 */ tmp11 = tmp15 + MULTIPLY(z1, FIX(0.513743148)); /* c3-c9 */ tmp14 = tmp15 - MULTIPLY(tmp13, FIX(2.176250899)); /* c3+c9 */ tmp13 = MULTIPLY(z2, - FIX(0.831253876)); /* -c9 */ tmp15 = MULTIPLY(z2, - FIX(1.344997024)); /* -c3 */ z2 = z1 - z4; tmp12 = z3 + MULTIPLY(z2, FIX(1.406466353)); /* c1 */ tmp10 = tmp12 + MULTIPLY(z4, FIX(2.457431844)) - tmp15; /* c1+c7 */ tmp16 = tmp12 - MULTIPLY(z1, FIX(1.112434820)) + tmp13; /* c1-c13 */ tmp12 = MULTIPLY(z2, FIX(1.224744871)) - z3; /* c5 */ z2 = MULTIPLY(z1 + z4, FIX(0.575212477)); /* c11 */ tmp13 += z2 + MULTIPLY(z1, FIX(0.475753014)) - z3; /* c7-c11 */ tmp15 += z2 - MULTIPLY(z4, FIX(0.869244010)) + z3; /* c11+c13 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*14] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*13] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*12] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*11] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*10] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp26 + tmp16, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp26 - tmp16, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp27, CONST_BITS-PASS1_BITS); } /* Pass 2: process 15 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 15; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z1 <<= CONST_BITS; z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[4]; z4 = (INT32) wsptr[6]; tmp10 = MULTIPLY(z4, FIX(0.437016024)); /* c12 */ tmp11 = MULTIPLY(z4, FIX(1.144122806)); /* c6 */ tmp12 = z1 - tmp10; tmp13 = z1 + tmp11; z1 -= (tmp11 - tmp10) << 1; /* c0 = (c6-c12)*2 */ z4 = z2 - z3; z3 += z2; tmp10 = MULTIPLY(z3, FIX(1.337628990)); /* (c2+c4)/2 */ tmp11 = MULTIPLY(z4, FIX(0.045680613)); /* (c2-c4)/2 */ z2 = MULTIPLY(z2, FIX(1.439773946)); /* c4+c14 */ tmp20 = tmp13 + tmp10 + tmp11; tmp23 = tmp12 - tmp10 + tmp11 + z2; tmp10 = MULTIPLY(z3, FIX(0.547059574)); /* (c8+c14)/2 */ tmp11 = MULTIPLY(z4, FIX(0.399234004)); /* (c8-c14)/2 */ tmp25 = tmp13 - tmp10 - tmp11; tmp26 = tmp12 + tmp10 - tmp11 - z2; tmp10 = MULTIPLY(z3, FIX(0.790569415)); /* (c6+c12)/2 */ tmp11 = MULTIPLY(z4, FIX(0.353553391)); /* (c6-c12)/2 */ tmp21 = tmp12 + tmp10 + tmp11; tmp24 = tmp13 - tmp10 + tmp11; tmp11 += tmp11; tmp22 = z1 + tmp11; /* c10 = c6-c12 */ tmp27 = z1 - tmp11 - tmp11; /* c0 = (c6-c12)*2 */ /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z4 = (INT32) wsptr[5]; z3 = MULTIPLY(z4, FIX(1.224744871)); /* c5 */ z4 = (INT32) wsptr[7]; tmp13 = z2 - z4; tmp15 = MULTIPLY(z1 + tmp13, FIX(0.831253876)); /* c9 */ tmp11 = tmp15 + MULTIPLY(z1, FIX(0.513743148)); /* c3-c9 */ tmp14 = tmp15 - MULTIPLY(tmp13, FIX(2.176250899)); /* c3+c9 */ tmp13 = MULTIPLY(z2, - FIX(0.831253876)); /* -c9 */ tmp15 = MULTIPLY(z2, - FIX(1.344997024)); /* -c3 */ z2 = z1 - z4; tmp12 = z3 + MULTIPLY(z2, FIX(1.406466353)); /* c1 */ tmp10 = tmp12 + MULTIPLY(z4, FIX(2.457431844)) - tmp15; /* c1+c7 */ tmp16 = tmp12 - MULTIPLY(z1, FIX(1.112434820)) + tmp13; /* c1-c13 */ tmp12 = MULTIPLY(z2, FIX(1.224744871)) - z3; /* c5 */ z2 = MULTIPLY(z1 + z4, FIX(0.575212477)); /* c11 */ tmp13 += z2 + MULTIPLY(z1, FIX(0.475753014)) - z3; /* c7-c11 */ tmp15 += z2 - MULTIPLY(z4, FIX(0.869244010)) + z3; /* c11+c13 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[14] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[13] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[12] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp26 + tmp16, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp26 - tmp16, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp27, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 16x16 output block. * * Optimized algorithm with 28 multiplications in the 1-D kernel. * cK represents sqrt(2) * cos(K*pi/32). */ GLOBAL(void) jpeg_idct_16x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp10, tmp11, tmp12, tmp13; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26, tmp27; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*16]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += 1 << (CONST_BITS-PASS1_BITS-1); z1 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp1 = MULTIPLY(z1, FIX(1.306562965)); /* c4[16] = c2[8] */ tmp2 = MULTIPLY(z1, FIX_0_541196100); /* c12[16] = c6[8] */ tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp12 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z3 = z1 - z2; z4 = MULTIPLY(z3, FIX(0.275899379)); /* c14[16] = c7[8] */ z3 = MULTIPLY(z3, FIX(1.387039845)); /* c2[16] = c1[8] */ tmp0 = z3 + MULTIPLY(z2, FIX_2_562915447); /* (c6+c2)[16] = (c3+c1)[8] */ tmp1 = z4 + MULTIPLY(z1, FIX_0_899976223); /* (c6-c14)[16] = (c3-c7)[8] */ tmp2 = z3 - MULTIPLY(z1, FIX(0.601344887)); /* (c2-c10)[16] = (c1-c5)[8] */ tmp3 = z4 - MULTIPLY(z2, FIX(0.509795579)); /* (c10-c14)[16] = (c5-c7)[8] */ tmp20 = tmp10 + tmp0; tmp27 = tmp10 - tmp0; tmp21 = tmp12 + tmp1; tmp26 = tmp12 - tmp1; tmp22 = tmp13 + tmp2; tmp25 = tmp13 - tmp2; tmp23 = tmp11 + tmp3; tmp24 = tmp11 - tmp3; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = z1 + z3; tmp1 = MULTIPLY(z1 + z2, FIX(1.353318001)); /* c3 */ tmp2 = MULTIPLY(tmp11, FIX(1.247225013)); /* c5 */ tmp3 = MULTIPLY(z1 + z4, FIX(1.093201867)); /* c7 */ tmp10 = MULTIPLY(z1 - z4, FIX(0.897167586)); /* c9 */ tmp11 = MULTIPLY(tmp11, FIX(0.666655658)); /* c11 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.410524528)); /* c13 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(z1, FIX(2.286341144)); /* c7+c5+c3-c1 */ tmp13 = tmp10 + tmp11 + tmp12 - MULTIPLY(z1, FIX(1.835730603)); /* c9+c11+c13-c15 */ z1 = MULTIPLY(z2 + z3, FIX(0.138617169)); /* c15 */ tmp1 += z1 + MULTIPLY(z2, FIX(0.071888074)); /* c9+c11-c3-c15 */ tmp2 += z1 - MULTIPLY(z3, FIX(1.125726048)); /* c5+c7+c15-c3 */ z1 = MULTIPLY(z3 - z2, FIX(1.407403738)); /* c1 */ tmp11 += z1 - MULTIPLY(z3, FIX(0.766367282)); /* c1+c11-c9-c13 */ tmp12 += z1 + MULTIPLY(z2, FIX(1.971951411)); /* c1+c5+c13-c7 */ z2 += z4; z1 = MULTIPLY(z2, - FIX(0.666655658)); /* -c11 */ tmp1 += z1; tmp3 += z1 + MULTIPLY(z4, FIX(1.065388962)); /* c3+c11+c15-c7 */ z2 = MULTIPLY(z2, - FIX(1.247225013)); /* -c5 */ tmp10 += z2 + MULTIPLY(z4, FIX(3.141271809)); /* c1+c5+c9-c13 */ tmp12 += z2; z2 = MULTIPLY(z3 + z4, - FIX(1.353318001)); /* -c3 */ tmp2 += z2; tmp3 += z2; z2 = MULTIPLY(z4 - z3, FIX(0.410524528)); /* c13 */ tmp10 += z2; tmp11 += z2; /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp0, CONST_BITS-PASS1_BITS); wsptr[8*15] = (int) RIGHT_SHIFT(tmp20 - tmp0, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp1, CONST_BITS-PASS1_BITS); wsptr[8*14] = (int) RIGHT_SHIFT(tmp21 - tmp1, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp2, CONST_BITS-PASS1_BITS); wsptr[8*13] = (int) RIGHT_SHIFT(tmp22 - tmp2, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp3, CONST_BITS-PASS1_BITS); wsptr[8*12] = (int) RIGHT_SHIFT(tmp23 - tmp3, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*11] = (int) RIGHT_SHIFT(tmp24 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*10] = (int) RIGHT_SHIFT(tmp25 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp26 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp26 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp27 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp27 - tmp13, CONST_BITS-PASS1_BITS); } /* Pass 2: process 16 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 16; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; z1 = (INT32) wsptr[4]; tmp1 = MULTIPLY(z1, FIX(1.306562965)); /* c4[16] = c2[8] */ tmp2 = MULTIPLY(z1, FIX_0_541196100); /* c12[16] = c6[8] */ tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp12 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[6]; z3 = z1 - z2; z4 = MULTIPLY(z3, FIX(0.275899379)); /* c14[16] = c7[8] */ z3 = MULTIPLY(z3, FIX(1.387039845)); /* c2[16] = c1[8] */ tmp0 = z3 + MULTIPLY(z2, FIX_2_562915447); /* (c6+c2)[16] = (c3+c1)[8] */ tmp1 = z4 + MULTIPLY(z1, FIX_0_899976223); /* (c6-c14)[16] = (c3-c7)[8] */ tmp2 = z3 - MULTIPLY(z1, FIX(0.601344887)); /* (c2-c10)[16] = (c1-c5)[8] */ tmp3 = z4 - MULTIPLY(z2, FIX(0.509795579)); /* (c10-c14)[16] = (c5-c7)[8] */ tmp20 = tmp10 + tmp0; tmp27 = tmp10 - tmp0; tmp21 = tmp12 + tmp1; tmp26 = tmp12 - tmp1; tmp22 = tmp13 + tmp2; tmp25 = tmp13 - tmp2; tmp23 = tmp11 + tmp3; tmp24 = tmp11 - tmp3; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; tmp11 = z1 + z3; tmp1 = MULTIPLY(z1 + z2, FIX(1.353318001)); /* c3 */ tmp2 = MULTIPLY(tmp11, FIX(1.247225013)); /* c5 */ tmp3 = MULTIPLY(z1 + z4, FIX(1.093201867)); /* c7 */ tmp10 = MULTIPLY(z1 - z4, FIX(0.897167586)); /* c9 */ tmp11 = MULTIPLY(tmp11, FIX(0.666655658)); /* c11 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.410524528)); /* c13 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(z1, FIX(2.286341144)); /* c7+c5+c3-c1 */ tmp13 = tmp10 + tmp11 + tmp12 - MULTIPLY(z1, FIX(1.835730603)); /* c9+c11+c13-c15 */ z1 = MULTIPLY(z2 + z3, FIX(0.138617169)); /* c15 */ tmp1 += z1 + MULTIPLY(z2, FIX(0.071888074)); /* c9+c11-c3-c15 */ tmp2 += z1 - MULTIPLY(z3, FIX(1.125726048)); /* c5+c7+c15-c3 */ z1 = MULTIPLY(z3 - z2, FIX(1.407403738)); /* c1 */ tmp11 += z1 - MULTIPLY(z3, FIX(0.766367282)); /* c1+c11-c9-c13 */ tmp12 += z1 + MULTIPLY(z2, FIX(1.971951411)); /* c1+c5+c13-c7 */ z2 += z4; z1 = MULTIPLY(z2, - FIX(0.666655658)); /* -c11 */ tmp1 += z1; tmp3 += z1 + MULTIPLY(z4, FIX(1.065388962)); /* c3+c11+c15-c7 */ z2 = MULTIPLY(z2, - FIX(1.247225013)); /* -c5 */ tmp10 += z2 + MULTIPLY(z4, FIX(3.141271809)); /* c1+c5+c9-c13 */ tmp12 += z2; z2 = MULTIPLY(z3 + z4, - FIX(1.353318001)); /* -c3 */ tmp2 += z2; tmp3 += z2; z2 = MULTIPLY(z4 - z3, FIX(0.410524528)); /* c13 */ tmp10 += z2; tmp11 += z2; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[15] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[14] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[13] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[12] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp26 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp26 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp27 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp27 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 16x8 output block. * * 8-point IDCT in pass 1 (columns), 16-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_16x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp10, tmp11, tmp12, tmp13; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26, tmp27; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*8]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ /* Note results are scaled up by sqrt(8) compared to a true IDCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = DCTSIZE; ctr > 0; ctr--) { /* Due to quantization, we will usually find that many of the input * coefficients are zero, especially the AC terms. We can exploit this * by short-circuiting the IDCT calculation for any column in which all * the AC terms are zero. In that case each output is equal to the * DC coefficient (with scale factor as needed). * With typical images and quantization tables, half or more of the * column DCT calculations can be simplified this way. */ if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) { /* AC terms all zero */ int dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) << PASS1_BITS; wsptr[DCTSIZE*0] = dcval; wsptr[DCTSIZE*1] = dcval; wsptr[DCTSIZE*2] = dcval; wsptr[DCTSIZE*3] = dcval; wsptr[DCTSIZE*4] = dcval; wsptr[DCTSIZE*5] = dcval; wsptr[DCTSIZE*6] = dcval; wsptr[DCTSIZE*7] = dcval; inptr++; /* advance pointers to next column */ quantptr++; wsptr++; continue; } /* Even part: reverse the even part of the forward DCT. */ /* The rotator is sqrt(2)*c(-6). */ z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z1 = MULTIPLY(z2 + z3, FIX_0_541196100); tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865); tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065); z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z2 <<= CONST_BITS; z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z2 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = z2 + z3; tmp1 = z2 - z3; tmp10 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; tmp11 = tmp1 + tmp3; tmp12 = tmp1 - tmp3; /* Odd part per figure 8; the matrix is unitary and hence its * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp1 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); tmp3 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = tmp0 + tmp2; z3 = tmp1 + tmp3; z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */ z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ z2 += z1; z3 += z1; z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ tmp0 += z1 + z2; tmp3 += z1 + z3; z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ tmp1 += z1 + z3; tmp2 += z1 + z2; /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ wsptr[DCTSIZE*0] = (int) RIGHT_SHIFT(tmp10 + tmp3, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*7] = (int) RIGHT_SHIFT(tmp10 - tmp3, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*1] = (int) RIGHT_SHIFT(tmp11 + tmp2, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*6] = (int) RIGHT_SHIFT(tmp11 - tmp2, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*2] = (int) RIGHT_SHIFT(tmp12 + tmp1, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*5] = (int) RIGHT_SHIFT(tmp12 - tmp1, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*3] = (int) RIGHT_SHIFT(tmp13 + tmp0, CONST_BITS-PASS1_BITS); wsptr[DCTSIZE*4] = (int) RIGHT_SHIFT(tmp13 - tmp0, CONST_BITS-PASS1_BITS); inptr++; /* advance pointers to next column */ quantptr++; wsptr++; } /* Pass 2: process 8 rows from work array, store into output array. * 16-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/32). */ wsptr = workspace; for (ctr = 0; ctr < 8; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; z1 = (INT32) wsptr[4]; tmp1 = MULTIPLY(z1, FIX(1.306562965)); /* c4[16] = c2[8] */ tmp2 = MULTIPLY(z1, FIX_0_541196100); /* c12[16] = c6[8] */ tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp12 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[6]; z3 = z1 - z2; z4 = MULTIPLY(z3, FIX(0.275899379)); /* c14[16] = c7[8] */ z3 = MULTIPLY(z3, FIX(1.387039845)); /* c2[16] = c1[8] */ tmp0 = z3 + MULTIPLY(z2, FIX_2_562915447); /* (c6+c2)[16] = (c3+c1)[8] */ tmp1 = z4 + MULTIPLY(z1, FIX_0_899976223); /* (c6-c14)[16] = (c3-c7)[8] */ tmp2 = z3 - MULTIPLY(z1, FIX(0.601344887)); /* (c2-c10)[16] = (c1-c5)[8] */ tmp3 = z4 - MULTIPLY(z2, FIX(0.509795579)); /* (c10-c14)[16] = (c5-c7)[8] */ tmp20 = tmp10 + tmp0; tmp27 = tmp10 - tmp0; tmp21 = tmp12 + tmp1; tmp26 = tmp12 - tmp1; tmp22 = tmp13 + tmp2; tmp25 = tmp13 - tmp2; tmp23 = tmp11 + tmp3; tmp24 = tmp11 - tmp3; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; tmp11 = z1 + z3; tmp1 = MULTIPLY(z1 + z2, FIX(1.353318001)); /* c3 */ tmp2 = MULTIPLY(tmp11, FIX(1.247225013)); /* c5 */ tmp3 = MULTIPLY(z1 + z4, FIX(1.093201867)); /* c7 */ tmp10 = MULTIPLY(z1 - z4, FIX(0.897167586)); /* c9 */ tmp11 = MULTIPLY(tmp11, FIX(0.666655658)); /* c11 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.410524528)); /* c13 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(z1, FIX(2.286341144)); /* c7+c5+c3-c1 */ tmp13 = tmp10 + tmp11 + tmp12 - MULTIPLY(z1, FIX(1.835730603)); /* c9+c11+c13-c15 */ z1 = MULTIPLY(z2 + z3, FIX(0.138617169)); /* c15 */ tmp1 += z1 + MULTIPLY(z2, FIX(0.071888074)); /* c9+c11-c3-c15 */ tmp2 += z1 - MULTIPLY(z3, FIX(1.125726048)); /* c5+c7+c15-c3 */ z1 = MULTIPLY(z3 - z2, FIX(1.407403738)); /* c1 */ tmp11 += z1 - MULTIPLY(z3, FIX(0.766367282)); /* c1+c11-c9-c13 */ tmp12 += z1 + MULTIPLY(z2, FIX(1.971951411)); /* c1+c5+c13-c7 */ z2 += z4; z1 = MULTIPLY(z2, - FIX(0.666655658)); /* -c11 */ tmp1 += z1; tmp3 += z1 + MULTIPLY(z4, FIX(1.065388962)); /* c3+c11+c15-c7 */ z2 = MULTIPLY(z2, - FIX(1.247225013)); /* -c5 */ tmp10 += z2 + MULTIPLY(z4, FIX(3.141271809)); /* c1+c5+c9-c13 */ tmp12 += z2; z2 = MULTIPLY(z3 + z4, - FIX(1.353318001)); /* -c3 */ tmp2 += z2; tmp3 += z2; z2 = MULTIPLY(z4 - z3, FIX(0.410524528)); /* c13 */ tmp10 += z2; tmp11 += z2; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[15] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[14] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[13] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[12] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp26 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp26 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp27 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp27 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 14x7 output block. * * 7-point IDCT in pass 1 (columns), 14-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_14x7 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*7]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 7-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/14). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp23 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp23 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp23 += ONE << (CONST_BITS-PASS1_BITS-1); z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp20 = MULTIPLY(z2 - z3, FIX(0.881747734)); /* c4 */ tmp22 = MULTIPLY(z1 - z2, FIX(0.314692123)); /* c6 */ tmp21 = tmp20 + tmp22 + tmp23 - MULTIPLY(z2, FIX(1.841218003)); /* c2+c4-c6 */ tmp10 = z1 + z3; z2 -= tmp10; tmp10 = MULTIPLY(tmp10, FIX(1.274162392)) + tmp23; /* c2 */ tmp20 += tmp10 - MULTIPLY(z3, FIX(0.077722536)); /* c2-c4-c6 */ tmp22 += tmp10 - MULTIPLY(z1, FIX(2.470602249)); /* c2+c4+c6 */ tmp23 += MULTIPLY(z2, FIX(1.414213562)); /* c0 */ /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp11 = MULTIPLY(z1 + z2, FIX(0.935414347)); /* (c3+c1-c5)/2 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.170262339)); /* (c3+c5-c1)/2 */ tmp10 = tmp11 - tmp12; tmp11 += tmp12; tmp12 = MULTIPLY(z2 + z3, - FIX(1.378756276)); /* -c1 */ tmp11 += tmp12; z2 = MULTIPLY(z1 + z3, FIX(0.613604268)); /* c5 */ tmp10 += z2; tmp12 += z2 + MULTIPLY(z3, FIX(1.870828693)); /* c3+c1-c5 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23, CONST_BITS-PASS1_BITS); } /* Pass 2: process 7 rows from work array, store into output array. * 14-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/28). */ wsptr = workspace; for (ctr = 0; ctr < 7; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z1 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z1 <<= CONST_BITS; z4 = (INT32) wsptr[4]; z2 = MULTIPLY(z4, FIX(1.274162392)); /* c4 */ z3 = MULTIPLY(z4, FIX(0.314692123)); /* c12 */ z4 = MULTIPLY(z4, FIX(0.881747734)); /* c8 */ tmp10 = z1 + z2; tmp11 = z1 + z3; tmp12 = z1 - z4; tmp23 = z1 - ((z2 + z3 - z4) << 1); /* c0 = (c4+c12-c8)*2 */ z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[6]; z3 = MULTIPLY(z1 + z2, FIX(1.105676686)); /* c6 */ tmp13 = z3 + MULTIPLY(z1, FIX(0.273079590)); /* c2-c6 */ tmp14 = z3 - MULTIPLY(z2, FIX(1.719280954)); /* c6+c10 */ tmp15 = MULTIPLY(z1, FIX(0.613604268)) - /* c10 */ MULTIPLY(z2, FIX(1.378756276)); /* c2 */ tmp20 = tmp10 + tmp13; tmp26 = tmp10 - tmp13; tmp21 = tmp11 + tmp14; tmp25 = tmp11 - tmp14; tmp22 = tmp12 + tmp15; tmp24 = tmp12 - tmp15; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; z4 <<= CONST_BITS; tmp14 = z1 + z3; tmp11 = MULTIPLY(z1 + z2, FIX(1.334852607)); /* c3 */ tmp12 = MULTIPLY(tmp14, FIX(1.197448846)); /* c5 */ tmp10 = tmp11 + tmp12 + z4 - MULTIPLY(z1, FIX(1.126980169)); /* c3+c5-c1 */ tmp14 = MULTIPLY(tmp14, FIX(0.752406978)); /* c9 */ tmp16 = tmp14 - MULTIPLY(z1, FIX(1.061150426)); /* c9+c11-c13 */ z1 -= z2; tmp15 = MULTIPLY(z1, FIX(0.467085129)) - z4; /* c11 */ tmp16 += tmp15; tmp13 = MULTIPLY(z2 + z3, - FIX(0.158341681)) - z4; /* -c13 */ tmp11 += tmp13 - MULTIPLY(z2, FIX(0.424103948)); /* c3-c9-c13 */ tmp12 += tmp13 - MULTIPLY(z3, FIX(2.373959773)); /* c3+c5-c13 */ tmp13 = MULTIPLY(z3 - z2, FIX(1.405321284)); /* c1 */ tmp14 += tmp13 + z4 - MULTIPLY(z3, FIX(1.6906431334)); /* c1+c9-c11 */ tmp15 += tmp13 + MULTIPLY(z2, FIX(0.674957567)); /* c1+c11-c5 */ tmp13 = ((z1 - z3) << CONST_BITS) + z4; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[13] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[12] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp26 + tmp16, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp26 - tmp16, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 12x6 output block. * * 6-point IDCT in pass 1 (columns), 12-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_12x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*6]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp10 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp10 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp10 += ONE << (CONST_BITS-PASS1_BITS-1); tmp12 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp20 = MULTIPLY(tmp12, FIX(0.707106781)); /* c4 */ tmp11 = tmp10 + tmp20; tmp21 = RIGHT_SHIFT(tmp10 - tmp20 - tmp20, CONST_BITS-PASS1_BITS); tmp20 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp10 = MULTIPLY(tmp20, FIX(1.224744871)); /* c2 */ tmp20 = tmp11 + tmp10; tmp22 = tmp11 - tmp10; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp11 = MULTIPLY(z1 + z3, FIX(0.366025404)); /* c5 */ tmp10 = tmp11 + ((z1 + z2) << CONST_BITS); tmp12 = tmp11 + ((z3 - z2) << CONST_BITS); tmp11 = (z1 - z2 - z3) << PASS1_BITS; /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) (tmp21 + tmp11); wsptr[8*4] = (int) (tmp21 - tmp11); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); } /* Pass 2: process 6 rows from work array, store into output array. * 12-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/24). */ wsptr = workspace; for (ctr = 0; ctr < 6; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 <<= CONST_BITS; z4 = (INT32) wsptr[4]; z4 = MULTIPLY(z4, FIX(1.224744871)); /* c4 */ tmp10 = z3 + z4; tmp11 = z3 - z4; z1 = (INT32) wsptr[2]; z4 = MULTIPLY(z1, FIX(1.366025404)); /* c2 */ z1 <<= CONST_BITS; z2 = (INT32) wsptr[6]; z2 <<= CONST_BITS; tmp12 = z1 - z2; tmp21 = z3 + tmp12; tmp24 = z3 - tmp12; tmp12 = z4 + z2; tmp20 = tmp10 + tmp12; tmp25 = tmp10 - tmp12; tmp12 = z4 - z1 - z2; tmp22 = tmp11 + tmp12; tmp23 = tmp11 - tmp12; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z4 = (INT32) wsptr[7]; tmp11 = MULTIPLY(z2, FIX(1.306562965)); /* c3 */ tmp14 = MULTIPLY(z2, - FIX_0_541196100); /* -c9 */ tmp10 = z1 + z3; tmp15 = MULTIPLY(tmp10 + z4, FIX(0.860918669)); /* c7 */ tmp12 = tmp15 + MULTIPLY(tmp10, FIX(0.261052384)); /* c5-c7 */ tmp10 = tmp12 + tmp11 + MULTIPLY(z1, FIX(0.280143716)); /* c1-c5 */ tmp13 = MULTIPLY(z3 + z4, - FIX(1.045510580)); /* -(c7+c11) */ tmp12 += tmp13 + tmp14 - MULTIPLY(z3, FIX(1.478575242)); /* c1+c5-c7-c11 */ tmp13 += tmp15 - tmp11 + MULTIPLY(z4, FIX(1.586706681)); /* c1+c11 */ tmp15 += tmp14 - MULTIPLY(z1, FIX(0.676326758)) - /* c7-c11 */ MULTIPLY(z4, FIX(1.982889723)); /* c5+c7 */ z1 -= z4; z2 -= z3; z3 = MULTIPLY(z1 + z2, FIX_0_541196100); /* c9 */ tmp11 = z3 + MULTIPLY(z1, FIX_0_765366865); /* c3-c9 */ tmp14 = z3 - MULTIPLY(z2, FIX_1_847759065); /* c3+c9 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[11] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[10] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 10x5 output block. * * 5-point IDCT in pass 1 (columns), 10-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_10x5 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14; INT32 tmp20, tmp21, tmp22, tmp23, tmp24; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*5]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 5-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/10). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp12 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp12 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp12 += ONE << (CONST_BITS-PASS1_BITS-1); tmp13 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp14 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z1 = MULTIPLY(tmp13 + tmp14, FIX(0.790569415)); /* (c2+c4)/2 */ z2 = MULTIPLY(tmp13 - tmp14, FIX(0.353553391)); /* (c2-c4)/2 */ z3 = tmp12 + z2; tmp10 = z3 + z1; tmp11 = z3 - z1; tmp12 -= z2 << 2; /* Odd part */ z2 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c3 */ tmp13 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c1-c3 */ tmp14 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c1+c3 */ /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp10 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp10 - tmp13, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp11 + tmp14, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp11 - tmp14, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp12, CONST_BITS-PASS1_BITS); } /* Pass 2: process 5 rows from work array, store into output array. * 10-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/20). */ wsptr = workspace; for (ctr = 0; ctr < 5; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ z3 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 <<= CONST_BITS; z4 = (INT32) wsptr[4]; z1 = MULTIPLY(z4, FIX(1.144122806)); /* c4 */ z2 = MULTIPLY(z4, FIX(0.437016024)); /* c8 */ tmp10 = z3 + z1; tmp11 = z3 - z2; tmp22 = z3 - ((z1 - z2) << 1); /* c0 = (c4-c8)*2 */ z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[6]; z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c6 */ tmp12 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c2-c6 */ tmp13 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c2+c6 */ tmp20 = tmp10 + tmp12; tmp24 = tmp10 - tmp12; tmp21 = tmp11 + tmp13; tmp23 = tmp11 - tmp13; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; z3 <<= CONST_BITS; z4 = (INT32) wsptr[7]; tmp11 = z2 + z4; tmp13 = z2 - z4; tmp12 = MULTIPLY(tmp13, FIX(0.309016994)); /* (c3-c7)/2 */ z2 = MULTIPLY(tmp11, FIX(0.951056516)); /* (c3+c7)/2 */ z4 = z3 + tmp12; tmp10 = MULTIPLY(z1, FIX(1.396802247)) + z2 + z4; /* c1 */ tmp14 = MULTIPLY(z1, FIX(0.221231742)) - z2 + z4; /* c9 */ z2 = MULTIPLY(tmp11, FIX(0.587785252)); /* (c1-c9)/2 */ z4 = z3 - tmp12 - (tmp13 << (CONST_BITS - 1)); tmp12 = ((z1 - tmp13) << CONST_BITS) - z3; tmp11 = MULTIPLY(z1, FIX(1.260073511)) - z2 - z4; /* c3 */ tmp13 = MULTIPLY(z1, FIX(0.642039522)) - z2 + z4; /* c7 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[9] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[8] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 8; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 8x4 output block. * * 4-point IDCT in pass 1 (columns), 8-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_8x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*4]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 4-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp10 = (tmp0 + tmp2) << PASS1_BITS; tmp12 = (tmp0 - tmp2) << PASS1_BITS; /* Odd part */ /* Same rotation as in the even part of the 8x8 LL&M IDCT */ z2 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z1 = MULTIPLY(z2 + z3, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = RIGHT_SHIFT(z1 + MULTIPLY(z2, FIX_0_765366865), /* c2-c6 */ CONST_BITS-PASS1_BITS); tmp2 = RIGHT_SHIFT(z1 - MULTIPLY(z3, FIX_1_847759065), /* c2+c6 */ CONST_BITS-PASS1_BITS); /* Final output stage */ wsptr[8*0] = (int) (tmp10 + tmp0); wsptr[8*3] = (int) (tmp10 - tmp0); wsptr[8*1] = (int) (tmp12 + tmp2); wsptr[8*2] = (int) (tmp12 - tmp2); } /* Pass 2: process rows from work array, store into output array. */ /* Note that we must descale the results by a factor of 8 == 2**3, */ /* and also undo the PASS1_BITS scaling. */ wsptr = workspace; for (ctr = 0; ctr < 4; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part: reverse the even part of the forward DCT. */ /* The rotator is sqrt(2)*c(-6). */ z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[6]; z1 = MULTIPLY(z2 + z3, FIX_0_541196100); tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865); tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065); /* Add fudge factor here for final descale. */ z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 = (INT32) wsptr[4]; tmp0 = (z2 + z3) << CONST_BITS; tmp1 = (z2 - z3) << CONST_BITS; tmp10 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; tmp11 = tmp1 + tmp3; tmp12 = tmp1 - tmp3; /* Odd part per figure 8; the matrix is unitary and hence its * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. */ tmp0 = (INT32) wsptr[7]; tmp1 = (INT32) wsptr[5]; tmp2 = (INT32) wsptr[3]; tmp3 = (INT32) wsptr[1]; z2 = tmp0 + tmp2; z3 = tmp1 + tmp3; z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */ z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ z2 += z1; z3 += z1; z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ tmp0 += z1 + z2; tmp3 += z1 + z3; z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ tmp1 += z1 + z3; tmp2 += z1 + z2; /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp13 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp13 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += DCTSIZE; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 6x3 output block. * * 3-point IDCT in pass 1 (columns), 6-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_6x3 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp10, tmp11, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[6*3]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 3-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/6). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 6; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-1); tmp2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp12 = MULTIPLY(tmp2, FIX(0.707106781)); /* c2 */ tmp10 = tmp0 + tmp12; tmp2 = tmp0 - tmp12 - tmp12; /* Odd part */ tmp12 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); tmp0 = MULTIPLY(tmp12, FIX(1.224744871)); /* c1 */ /* Final output stage */ wsptr[6*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[6*2] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[6*1] = (int) RIGHT_SHIFT(tmp2, CONST_BITS-PASS1_BITS); } /* Pass 2: process 3 rows from work array, store into output array. * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */ wsptr = workspace; for (ctr = 0; ctr < 3; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; tmp2 = (INT32) wsptr[4]; tmp10 = MULTIPLY(tmp2, FIX(0.707106781)); /* c4 */ tmp1 = tmp0 + tmp10; tmp11 = tmp0 - tmp10 - tmp10; tmp10 = (INT32) wsptr[2]; tmp0 = MULTIPLY(tmp10, FIX(1.224744871)); /* c2 */ tmp10 = tmp1 + tmp0; tmp12 = tmp1 - tmp0; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; tmp1 = MULTIPLY(z1 + z3, FIX(0.366025404)); /* c5 */ tmp0 = tmp1 + ((z1 + z2) << CONST_BITS); tmp2 = tmp1 + ((z3 - z2) << CONST_BITS); tmp1 = (z1 - z2 - z3) << CONST_BITS; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 6; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 4x2 output block. * * 2-point IDCT in pass 1 (columns), 4-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_4x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp2, tmp10, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; INT32 * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; INT32 workspace[4*2]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 4; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp10 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); /* Odd part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); /* Final output stage */ wsptr[4*0] = tmp10 + tmp0; wsptr[4*1] = tmp10 - tmp0; } /* Pass 2: process 2 rows from work array, store into output array. * 4-point IDCT kernel, * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT]. */ wsptr = workspace; for (ctr = 0; ctr < 2; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = wsptr[0] + (ONE << 2); tmp2 = wsptr[2]; tmp10 = (tmp0 + tmp2) << CONST_BITS; tmp12 = (tmp0 - tmp2) << CONST_BITS; /* Odd part */ /* Same rotation as in the even part of the 8x8 LL&M IDCT */ z2 = wsptr[1]; z3 = wsptr[3]; z1 = MULTIPLY(z2 + z3, FIX_0_541196100); /* c6 */ tmp0 = z1 + MULTIPLY(z2, FIX_0_765366865); /* c2-c6 */ tmp2 = z1 - MULTIPLY(z3, FIX_1_847759065); /* c2+c6 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+3) & RANGE_MASK]; wsptr += 4; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 2x1 output block. * * 1-point IDCT in pass 1 (columns), 2-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_2x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp10; ISLOW_MULT_TYPE * quantptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); SHIFT_TEMPS /* Pass 1: empty. */ /* Pass 2: process 1 row from input, store into output array. */ quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; outptr = output_buf[0] + output_col; /* Even part */ tmp10 = DEQUANTIZE(coef_block[0], quantptr[0]); /* Add fudge factor here for final descale. */ tmp10 += ONE << 2; /* Odd part */ tmp0 = DEQUANTIZE(coef_block[1], quantptr[1]); /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, 3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, 3) & RANGE_MASK]; } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 8x16 output block. * * 16-point IDCT in pass 1 (columns), 8-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_8x16 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp10, tmp11, tmp12, tmp13; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26, tmp27; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[8*16]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 16-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/32). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 8; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-1); z1 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp1 = MULTIPLY(z1, FIX(1.306562965)); /* c4[16] = c2[8] */ tmp2 = MULTIPLY(z1, FIX_0_541196100); /* c12[16] = c6[8] */ tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp12 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z3 = z1 - z2; z4 = MULTIPLY(z3, FIX(0.275899379)); /* c14[16] = c7[8] */ z3 = MULTIPLY(z3, FIX(1.387039845)); /* c2[16] = c1[8] */ tmp0 = z3 + MULTIPLY(z2, FIX_2_562915447); /* (c6+c2)[16] = (c3+c1)[8] */ tmp1 = z4 + MULTIPLY(z1, FIX_0_899976223); /* (c6-c14)[16] = (c3-c7)[8] */ tmp2 = z3 - MULTIPLY(z1, FIX(0.601344887)); /* (c2-c10)[16] = (c1-c5)[8] */ tmp3 = z4 - MULTIPLY(z2, FIX(0.509795579)); /* (c10-c14)[16] = (c5-c7)[8] */ tmp20 = tmp10 + tmp0; tmp27 = tmp10 - tmp0; tmp21 = tmp12 + tmp1; tmp26 = tmp12 - tmp1; tmp22 = tmp13 + tmp2; tmp25 = tmp13 - tmp2; tmp23 = tmp11 + tmp3; tmp24 = tmp11 - tmp3; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = z1 + z3; tmp1 = MULTIPLY(z1 + z2, FIX(1.353318001)); /* c3 */ tmp2 = MULTIPLY(tmp11, FIX(1.247225013)); /* c5 */ tmp3 = MULTIPLY(z1 + z4, FIX(1.093201867)); /* c7 */ tmp10 = MULTIPLY(z1 - z4, FIX(0.897167586)); /* c9 */ tmp11 = MULTIPLY(tmp11, FIX(0.666655658)); /* c11 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.410524528)); /* c13 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(z1, FIX(2.286341144)); /* c7+c5+c3-c1 */ tmp13 = tmp10 + tmp11 + tmp12 - MULTIPLY(z1, FIX(1.835730603)); /* c9+c11+c13-c15 */ z1 = MULTIPLY(z2 + z3, FIX(0.138617169)); /* c15 */ tmp1 += z1 + MULTIPLY(z2, FIX(0.071888074)); /* c9+c11-c3-c15 */ tmp2 += z1 - MULTIPLY(z3, FIX(1.125726048)); /* c5+c7+c15-c3 */ z1 = MULTIPLY(z3 - z2, FIX(1.407403738)); /* c1 */ tmp11 += z1 - MULTIPLY(z3, FIX(0.766367282)); /* c1+c11-c9-c13 */ tmp12 += z1 + MULTIPLY(z2, FIX(1.971951411)); /* c1+c5+c13-c7 */ z2 += z4; z1 = MULTIPLY(z2, - FIX(0.666655658)); /* -c11 */ tmp1 += z1; tmp3 += z1 + MULTIPLY(z4, FIX(1.065388962)); /* c3+c11+c15-c7 */ z2 = MULTIPLY(z2, - FIX(1.247225013)); /* -c5 */ tmp10 += z2 + MULTIPLY(z4, FIX(3.141271809)); /* c1+c5+c9-c13 */ tmp12 += z2; z2 = MULTIPLY(z3 + z4, - FIX(1.353318001)); /* -c3 */ tmp2 += z2; tmp3 += z2; z2 = MULTIPLY(z4 - z3, FIX(0.410524528)); /* c13 */ tmp10 += z2; tmp11 += z2; /* Final output stage */ wsptr[8*0] = (int) RIGHT_SHIFT(tmp20 + tmp0, CONST_BITS-PASS1_BITS); wsptr[8*15] = (int) RIGHT_SHIFT(tmp20 - tmp0, CONST_BITS-PASS1_BITS); wsptr[8*1] = (int) RIGHT_SHIFT(tmp21 + tmp1, CONST_BITS-PASS1_BITS); wsptr[8*14] = (int) RIGHT_SHIFT(tmp21 - tmp1, CONST_BITS-PASS1_BITS); wsptr[8*2] = (int) RIGHT_SHIFT(tmp22 + tmp2, CONST_BITS-PASS1_BITS); wsptr[8*13] = (int) RIGHT_SHIFT(tmp22 - tmp2, CONST_BITS-PASS1_BITS); wsptr[8*3] = (int) RIGHT_SHIFT(tmp23 + tmp3, CONST_BITS-PASS1_BITS); wsptr[8*12] = (int) RIGHT_SHIFT(tmp23 - tmp3, CONST_BITS-PASS1_BITS); wsptr[8*4] = (int) RIGHT_SHIFT(tmp24 + tmp10, CONST_BITS-PASS1_BITS); wsptr[8*11] = (int) RIGHT_SHIFT(tmp24 - tmp10, CONST_BITS-PASS1_BITS); wsptr[8*5] = (int) RIGHT_SHIFT(tmp25 + tmp11, CONST_BITS-PASS1_BITS); wsptr[8*10] = (int) RIGHT_SHIFT(tmp25 - tmp11, CONST_BITS-PASS1_BITS); wsptr[8*6] = (int) RIGHT_SHIFT(tmp26 + tmp12, CONST_BITS-PASS1_BITS); wsptr[8*9] = (int) RIGHT_SHIFT(tmp26 - tmp12, CONST_BITS-PASS1_BITS); wsptr[8*7] = (int) RIGHT_SHIFT(tmp27 + tmp13, CONST_BITS-PASS1_BITS); wsptr[8*8] = (int) RIGHT_SHIFT(tmp27 - tmp13, CONST_BITS-PASS1_BITS); } /* Pass 2: process rows from work array, store into output array. */ /* Note that we must descale the results by a factor of 8 == 2**3, */ /* and also undo the PASS1_BITS scaling. */ wsptr = workspace; for (ctr = 0; ctr < 16; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part: reverse the even part of the forward DCT. */ /* The rotator is sqrt(2)*c(-6). */ z2 = (INT32) wsptr[2]; z3 = (INT32) wsptr[6]; z1 = MULTIPLY(z2 + z3, FIX_0_541196100); tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865); tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065); /* Add fudge factor here for final descale. */ z2 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); z3 = (INT32) wsptr[4]; tmp0 = (z2 + z3) << CONST_BITS; tmp1 = (z2 - z3) << CONST_BITS; tmp10 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; tmp11 = tmp1 + tmp3; tmp12 = tmp1 - tmp3; /* Odd part per figure 8; the matrix is unitary and hence its * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. */ tmp0 = (INT32) wsptr[7]; tmp1 = (INT32) wsptr[5]; tmp2 = (INT32) wsptr[3]; tmp3 = (INT32) wsptr[1]; z2 = tmp0 + tmp2; z3 = tmp1 + tmp3; z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */ z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ z2 += z1; z3 += z1; z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ tmp0 += z1 + z2; tmp3 += z1 + z3; z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ tmp1 += z1 + z3; tmp2 += z1 + z2; /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp3, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp1, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp13 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp13 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += DCTSIZE; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 7x14 output block. * * 14-point IDCT in pass 1 (columns), 7-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_7x14 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25, tmp26; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[7*14]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 14-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/28). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 7; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z1 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z1 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); z4 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z2 = MULTIPLY(z4, FIX(1.274162392)); /* c4 */ z3 = MULTIPLY(z4, FIX(0.314692123)); /* c12 */ z4 = MULTIPLY(z4, FIX(0.881747734)); /* c8 */ tmp10 = z1 + z2; tmp11 = z1 + z3; tmp12 = z1 - z4; tmp23 = RIGHT_SHIFT(z1 - ((z2 + z3 - z4) << 1), /* c0 = (c4+c12-c8)*2 */ CONST_BITS-PASS1_BITS); z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z2 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z3 = MULTIPLY(z1 + z2, FIX(1.105676686)); /* c6 */ tmp13 = z3 + MULTIPLY(z1, FIX(0.273079590)); /* c2-c6 */ tmp14 = z3 - MULTIPLY(z2, FIX(1.719280954)); /* c6+c10 */ tmp15 = MULTIPLY(z1, FIX(0.613604268)) - /* c10 */ MULTIPLY(z2, FIX(1.378756276)); /* c2 */ tmp20 = tmp10 + tmp13; tmp26 = tmp10 - tmp13; tmp21 = tmp11 + tmp14; tmp25 = tmp11 - tmp14; tmp22 = tmp12 + tmp15; tmp24 = tmp12 - tmp15; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp13 = z4 << CONST_BITS; tmp14 = z1 + z3; tmp11 = MULTIPLY(z1 + z2, FIX(1.334852607)); /* c3 */ tmp12 = MULTIPLY(tmp14, FIX(1.197448846)); /* c5 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(z1, FIX(1.126980169)); /* c3+c5-c1 */ tmp14 = MULTIPLY(tmp14, FIX(0.752406978)); /* c9 */ tmp16 = tmp14 - MULTIPLY(z1, FIX(1.061150426)); /* c9+c11-c13 */ z1 -= z2; tmp15 = MULTIPLY(z1, FIX(0.467085129)) - tmp13; /* c11 */ tmp16 += tmp15; z1 += z4; z4 = MULTIPLY(z2 + z3, - FIX(0.158341681)) - tmp13; /* -c13 */ tmp11 += z4 - MULTIPLY(z2, FIX(0.424103948)); /* c3-c9-c13 */ tmp12 += z4 - MULTIPLY(z3, FIX(2.373959773)); /* c3+c5-c13 */ z4 = MULTIPLY(z3 - z2, FIX(1.405321284)); /* c1 */ tmp14 += z4 + tmp13 - MULTIPLY(z3, FIX(1.6906431334)); /* c1+c9-c11 */ tmp15 += z4 + MULTIPLY(z2, FIX(0.674957567)); /* c1+c11-c5 */ tmp13 = (z1 - z3) << PASS1_BITS; /* Final output stage */ wsptr[7*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[7*13] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[7*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[7*12] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[7*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[7*11] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[7*3] = (int) (tmp23 + tmp13); wsptr[7*10] = (int) (tmp23 - tmp13); wsptr[7*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[7*9] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[7*5] = (int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS-PASS1_BITS); wsptr[7*8] = (int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS-PASS1_BITS); wsptr[7*6] = (int) RIGHT_SHIFT(tmp26 + tmp16, CONST_BITS-PASS1_BITS); wsptr[7*7] = (int) RIGHT_SHIFT(tmp26 - tmp16, CONST_BITS-PASS1_BITS); } /* Pass 2: process 14 rows from work array, store into output array. * 7-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/14). */ wsptr = workspace; for (ctr = 0; ctr < 14; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp23 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp23 <<= CONST_BITS; z1 = (INT32) wsptr[2]; z2 = (INT32) wsptr[4]; z3 = (INT32) wsptr[6]; tmp20 = MULTIPLY(z2 - z3, FIX(0.881747734)); /* c4 */ tmp22 = MULTIPLY(z1 - z2, FIX(0.314692123)); /* c6 */ tmp21 = tmp20 + tmp22 + tmp23 - MULTIPLY(z2, FIX(1.841218003)); /* c2+c4-c6 */ tmp10 = z1 + z3; z2 -= tmp10; tmp10 = MULTIPLY(tmp10, FIX(1.274162392)) + tmp23; /* c2 */ tmp20 += tmp10 - MULTIPLY(z3, FIX(0.077722536)); /* c2-c4-c6 */ tmp22 += tmp10 - MULTIPLY(z1, FIX(2.470602249)); /* c2+c4+c6 */ tmp23 += MULTIPLY(z2, FIX(1.414213562)); /* c0 */ /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; tmp11 = MULTIPLY(z1 + z2, FIX(0.935414347)); /* (c3+c1-c5)/2 */ tmp12 = MULTIPLY(z1 - z2, FIX(0.170262339)); /* (c3+c5-c1)/2 */ tmp10 = tmp11 - tmp12; tmp11 += tmp12; tmp12 = MULTIPLY(z2 + z3, - FIX(1.378756276)); /* -c1 */ tmp11 += tmp12; z2 = MULTIPLY(z1 + z3, FIX(0.613604268)); /* c5 */ tmp10 += z2; tmp12 += z2 + MULTIPLY(z3, FIX(1.870828693)); /* c3+c1-c5 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp23, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 7; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 6x12 output block. * * 12-point IDCT in pass 1 (columns), 6-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_6x12 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; INT32 tmp20, tmp21, tmp22, tmp23, tmp24, tmp25; INT32 z1, z2, z3, z4; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[6*12]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 12-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/24). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 6; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z3 += ONE << (CONST_BITS-PASS1_BITS-1); z4 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z4 = MULTIPLY(z4, FIX(1.224744871)); /* c4 */ tmp10 = z3 + z4; tmp11 = z3 - z4; z1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z4 = MULTIPLY(z1, FIX(1.366025404)); /* c2 */ z1 <<= CONST_BITS; z2 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z2 <<= CONST_BITS; tmp12 = z1 - z2; tmp21 = z3 + tmp12; tmp24 = z3 - tmp12; tmp12 = z4 + z2; tmp20 = tmp10 + tmp12; tmp25 = tmp10 - tmp12; tmp12 = z4 - z1 - z2; tmp22 = tmp11 + tmp12; tmp23 = tmp11 - tmp12; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = MULTIPLY(z2, FIX(1.306562965)); /* c3 */ tmp14 = MULTIPLY(z2, - FIX_0_541196100); /* -c9 */ tmp10 = z1 + z3; tmp15 = MULTIPLY(tmp10 + z4, FIX(0.860918669)); /* c7 */ tmp12 = tmp15 + MULTIPLY(tmp10, FIX(0.261052384)); /* c5-c7 */ tmp10 = tmp12 + tmp11 + MULTIPLY(z1, FIX(0.280143716)); /* c1-c5 */ tmp13 = MULTIPLY(z3 + z4, - FIX(1.045510580)); /* -(c7+c11) */ tmp12 += tmp13 + tmp14 - MULTIPLY(z3, FIX(1.478575242)); /* c1+c5-c7-c11 */ tmp13 += tmp15 - tmp11 + MULTIPLY(z4, FIX(1.586706681)); /* c1+c11 */ tmp15 += tmp14 - MULTIPLY(z1, FIX(0.676326758)) - /* c7-c11 */ MULTIPLY(z4, FIX(1.982889723)); /* c5+c7 */ z1 -= z4; z2 -= z3; z3 = MULTIPLY(z1 + z2, FIX_0_541196100); /* c9 */ tmp11 = z3 + MULTIPLY(z1, FIX_0_765366865); /* c3-c9 */ tmp14 = z3 - MULTIPLY(z2, FIX_1_847759065); /* c3+c9 */ /* Final output stage */ wsptr[6*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[6*11] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[6*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[6*10] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[6*2] = (int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS-PASS1_BITS); wsptr[6*9] = (int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS-PASS1_BITS); wsptr[6*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[6*8] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[6*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[6*7] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); wsptr[6*5] = (int) RIGHT_SHIFT(tmp25 + tmp15, CONST_BITS-PASS1_BITS); wsptr[6*6] = (int) RIGHT_SHIFT(tmp25 - tmp15, CONST_BITS-PASS1_BITS); } /* Pass 2: process 12 rows from work array, store into output array. * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */ wsptr = workspace; for (ctr = 0; ctr < 12; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp10 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp10 <<= CONST_BITS; tmp12 = (INT32) wsptr[4]; tmp20 = MULTIPLY(tmp12, FIX(0.707106781)); /* c4 */ tmp11 = tmp10 + tmp20; tmp21 = tmp10 - tmp20 - tmp20; tmp20 = (INT32) wsptr[2]; tmp10 = MULTIPLY(tmp20, FIX(1.224744871)); /* c2 */ tmp20 = tmp11 + tmp10; tmp22 = tmp11 - tmp10; /* Odd part */ z1 = (INT32) wsptr[1]; z2 = (INT32) wsptr[3]; z3 = (INT32) wsptr[5]; tmp11 = MULTIPLY(z1 + z3, FIX(0.366025404)); /* c5 */ tmp10 = tmp11 + ((z1 + z2) << CONST_BITS); tmp12 = tmp11 + ((z3 - z2) << CONST_BITS); tmp11 = (z1 - z2 - z3) << CONST_BITS; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[(int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp22 + tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp22 - tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 6; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 5x10 output block. * * 10-point IDCT in pass 1 (columns), 5-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_5x10 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp10, tmp11, tmp12, tmp13, tmp14; INT32 tmp20, tmp21, tmp22, tmp23, tmp24; INT32 z1, z2, z3, z4, z5; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[5*10]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 10-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/20). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 5; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ z3 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z3 += ONE << (CONST_BITS-PASS1_BITS-1); z4 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z1 = MULTIPLY(z4, FIX(1.144122806)); /* c4 */ z2 = MULTIPLY(z4, FIX(0.437016024)); /* c8 */ tmp10 = z3 + z1; tmp11 = z3 - z2; tmp22 = RIGHT_SHIFT(z3 - ((z1 - z2) << 1), /* c0 = (c4-c8)*2 */ CONST_BITS-PASS1_BITS); z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c6 */ tmp12 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c2-c6 */ tmp13 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c2+c6 */ tmp20 = tmp10 + tmp12; tmp24 = tmp10 - tmp12; tmp21 = tmp11 + tmp13; tmp23 = tmp11 - tmp13; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); z4 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp11 = z2 + z4; tmp13 = z2 - z4; tmp12 = MULTIPLY(tmp13, FIX(0.309016994)); /* (c3-c7)/2 */ z5 = z3 << CONST_BITS; z2 = MULTIPLY(tmp11, FIX(0.951056516)); /* (c3+c7)/2 */ z4 = z5 + tmp12; tmp10 = MULTIPLY(z1, FIX(1.396802247)) + z2 + z4; /* c1 */ tmp14 = MULTIPLY(z1, FIX(0.221231742)) - z2 + z4; /* c9 */ z2 = MULTIPLY(tmp11, FIX(0.587785252)); /* (c1-c9)/2 */ z4 = z5 - tmp12 - (tmp13 << (CONST_BITS - 1)); tmp12 = (z1 - tmp13 - z3) << PASS1_BITS; tmp11 = MULTIPLY(z1, FIX(1.260073511)) - z2 - z4; /* c3 */ tmp13 = MULTIPLY(z1, FIX(0.642039522)) - z2 + z4; /* c7 */ /* Final output stage */ wsptr[5*0] = (int) RIGHT_SHIFT(tmp20 + tmp10, CONST_BITS-PASS1_BITS); wsptr[5*9] = (int) RIGHT_SHIFT(tmp20 - tmp10, CONST_BITS-PASS1_BITS); wsptr[5*1] = (int) RIGHT_SHIFT(tmp21 + tmp11, CONST_BITS-PASS1_BITS); wsptr[5*8] = (int) RIGHT_SHIFT(tmp21 - tmp11, CONST_BITS-PASS1_BITS); wsptr[5*2] = (int) (tmp22 + tmp12); wsptr[5*7] = (int) (tmp22 - tmp12); wsptr[5*3] = (int) RIGHT_SHIFT(tmp23 + tmp13, CONST_BITS-PASS1_BITS); wsptr[5*6] = (int) RIGHT_SHIFT(tmp23 - tmp13, CONST_BITS-PASS1_BITS); wsptr[5*4] = (int) RIGHT_SHIFT(tmp24 + tmp14, CONST_BITS-PASS1_BITS); wsptr[5*5] = (int) RIGHT_SHIFT(tmp24 - tmp14, CONST_BITS-PASS1_BITS); } /* Pass 2: process 10 rows from work array, store into output array. * 5-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/10). */ wsptr = workspace; for (ctr = 0; ctr < 10; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp12 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp12 <<= CONST_BITS; tmp13 = (INT32) wsptr[2]; tmp14 = (INT32) wsptr[4]; z1 = MULTIPLY(tmp13 + tmp14, FIX(0.790569415)); /* (c2+c4)/2 */ z2 = MULTIPLY(tmp13 - tmp14, FIX(0.353553391)); /* (c2-c4)/2 */ z3 = tmp12 + z2; tmp10 = z3 + z1; tmp11 = z3 - z1; tmp12 -= z2 << 2; /* Odd part */ z2 = (INT32) wsptr[1]; z3 = (INT32) wsptr[3]; z1 = MULTIPLY(z2 + z3, FIX(0.831253876)); /* c3 */ tmp13 = z1 + MULTIPLY(z2, FIX(0.513743148)); /* c1-c3 */ tmp14 = z1 - MULTIPLY(z3, FIX(2.176250899)); /* c1+c3 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp13, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp11 + tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp11 - tmp14, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 5; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 4x8 output block. * * 8-point IDCT in pass 1 (columns), 4-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_4x8 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[4*8]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. */ /* Note results are scaled up by sqrt(8) compared to a true IDCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 4; ctr > 0; ctr--) { /* Due to quantization, we will usually find that many of the input * coefficients are zero, especially the AC terms. We can exploit this * by short-circuiting the IDCT calculation for any column in which all * the AC terms are zero. In that case each output is equal to the * DC coefficient (with scale factor as needed). * With typical images and quantization tables, half or more of the * column DCT calculations can be simplified this way. */ if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) { /* AC terms all zero */ int dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) << PASS1_BITS; wsptr[4*0] = dcval; wsptr[4*1] = dcval; wsptr[4*2] = dcval; wsptr[4*3] = dcval; wsptr[4*4] = dcval; wsptr[4*5] = dcval; wsptr[4*6] = dcval; wsptr[4*7] = dcval; inptr++; /* advance pointers to next column */ quantptr++; wsptr++; continue; } /* Even part: reverse the even part of the forward DCT. */ /* The rotator is sqrt(2)*c(-6). */ z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); z1 = MULTIPLY(z2 + z3, FIX_0_541196100); tmp2 = z1 + MULTIPLY(z2, FIX_0_765366865); tmp3 = z1 - MULTIPLY(z3, FIX_1_847759065); z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); z2 <<= CONST_BITS; z3 <<= CONST_BITS; /* Add fudge factor here for final descale. */ z2 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = z2 + z3; tmp1 = z2 - z3; tmp10 = tmp0 + tmp2; tmp13 = tmp0 - tmp2; tmp11 = tmp1 + tmp3; tmp12 = tmp1 - tmp3; /* Odd part per figure 8; the matrix is unitary and hence its * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); tmp1 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); tmp3 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = tmp0 + tmp2; z3 = tmp1 + tmp3; z1 = MULTIPLY(z2 + z3, FIX_1_175875602); /* sqrt(2) * c3 */ z2 = MULTIPLY(z2, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ z3 = MULTIPLY(z3, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ z2 += z1; z3 += z1; z1 = MULTIPLY(tmp0 + tmp3, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ tmp0 += z1 + z2; tmp3 += z1 + z3; z1 = MULTIPLY(tmp1 + tmp2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ tmp1 += z1 + z3; tmp2 += z1 + z2; /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ wsptr[4*0] = (int) RIGHT_SHIFT(tmp10 + tmp3, CONST_BITS-PASS1_BITS); wsptr[4*7] = (int) RIGHT_SHIFT(tmp10 - tmp3, CONST_BITS-PASS1_BITS); wsptr[4*1] = (int) RIGHT_SHIFT(tmp11 + tmp2, CONST_BITS-PASS1_BITS); wsptr[4*6] = (int) RIGHT_SHIFT(tmp11 - tmp2, CONST_BITS-PASS1_BITS); wsptr[4*2] = (int) RIGHT_SHIFT(tmp12 + tmp1, CONST_BITS-PASS1_BITS); wsptr[4*5] = (int) RIGHT_SHIFT(tmp12 - tmp1, CONST_BITS-PASS1_BITS); wsptr[4*3] = (int) RIGHT_SHIFT(tmp13 + tmp0, CONST_BITS-PASS1_BITS); wsptr[4*4] = (int) RIGHT_SHIFT(tmp13 - tmp0, CONST_BITS-PASS1_BITS); inptr++; /* advance pointers to next column */ quantptr++; wsptr++; } /* Pass 2: process 8 rows from work array, store into output array. * 4-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/16). */ wsptr = workspace; for (ctr = 0; ctr < 8; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp2 = (INT32) wsptr[2]; tmp10 = (tmp0 + tmp2) << CONST_BITS; tmp12 = (tmp0 - tmp2) << CONST_BITS; /* Odd part */ /* Same rotation as in the even part of the 8x8 LL&M IDCT */ z2 = (INT32) wsptr[1]; z3 = (INT32) wsptr[3]; z1 = MULTIPLY(z2 + z3, FIX_0_541196100); /* c6 */ tmp0 = z1 + MULTIPLY(z2, FIX_0_765366865); /* c2-c6 */ tmp2 = z1 - MULTIPLY(z3, FIX_1_847759065); /* c2+c6 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 4; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a reduced-size 3x6 output block. * * 6-point IDCT in pass 1 (columns), 3-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_3x6 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp1, tmp2, tmp10, tmp11, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[3*6]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 6-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 3; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp0 <<= CONST_BITS; /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-1); tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp10 = MULTIPLY(tmp2, FIX(0.707106781)); /* c4 */ tmp1 = tmp0 + tmp10; tmp11 = RIGHT_SHIFT(tmp0 - tmp10 - tmp10, CONST_BITS-PASS1_BITS); tmp10 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp0 = MULTIPLY(tmp10, FIX(1.224744871)); /* c2 */ tmp10 = tmp1 + tmp0; tmp12 = tmp1 - tmp0; /* Odd part */ z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z3 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp1 = MULTIPLY(z1 + z3, FIX(0.366025404)); /* c5 */ tmp0 = tmp1 + ((z1 + z2) << CONST_BITS); tmp2 = tmp1 + ((z3 - z2) << CONST_BITS); tmp1 = (z1 - z2 - z3) << PASS1_BITS; /* Final output stage */ wsptr[3*0] = (int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS-PASS1_BITS); wsptr[3*5] = (int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS-PASS1_BITS); wsptr[3*1] = (int) (tmp11 + tmp1); wsptr[3*4] = (int) (tmp11 - tmp1); wsptr[3*2] = (int) RIGHT_SHIFT(tmp12 + tmp2, CONST_BITS-PASS1_BITS); wsptr[3*3] = (int) RIGHT_SHIFT(tmp12 - tmp2, CONST_BITS-PASS1_BITS); } /* Pass 2: process 6 rows from work array, store into output array. * 3-point IDCT kernel, cK represents sqrt(2) * cos(K*pi/6). */ wsptr = workspace; for (ctr = 0; ctr < 6; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = (INT32) wsptr[0] + (ONE << (PASS1_BITS+2)); tmp0 <<= CONST_BITS; tmp2 = (INT32) wsptr[2]; tmp12 = MULTIPLY(tmp2, FIX(0.707106781)); /* c2 */ tmp10 = tmp0 + tmp12; tmp2 = tmp0 - tmp12 - tmp12; /* Odd part */ tmp12 = (INT32) wsptr[1]; tmp0 = MULTIPLY(tmp12, FIX(1.224744871)); /* c1 */ /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp2, CONST_BITS+PASS1_BITS+3) & RANGE_MASK]; wsptr += 3; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 2x4 output block. * * 4-point IDCT in pass 1 (columns), 2-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_2x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp2, tmp10, tmp12; INT32 z1, z2, z3; JCOEFPTR inptr; ISLOW_MULT_TYPE * quantptr; INT32 * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; INT32 workspace[2*4]; /* buffers data between passes */ SHIFT_TEMPS /* Pass 1: process columns from input, store into work array. * 4-point IDCT kernel, * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point IDCT]. */ inptr = coef_block; quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = 0; ctr < 2; ctr++, inptr++, quantptr++, wsptr++) { /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp10 = (tmp0 + tmp2) << CONST_BITS; tmp12 = (tmp0 - tmp2) << CONST_BITS; /* Odd part */ /* Same rotation as in the even part of the 8x8 LL&M IDCT */ z2 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); z1 = MULTIPLY(z2 + z3, FIX_0_541196100); /* c6 */ tmp0 = z1 + MULTIPLY(z2, FIX_0_765366865); /* c2-c6 */ tmp2 = z1 - MULTIPLY(z3, FIX_1_847759065); /* c2+c6 */ /* Final output stage */ wsptr[2*0] = tmp10 + tmp0; wsptr[2*3] = tmp10 - tmp0; wsptr[2*1] = tmp12 + tmp2; wsptr[2*2] = tmp12 - tmp2; } /* Pass 2: process 4 rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < 4; ctr++) { outptr = output_buf[ctr] + output_col; /* Even part */ /* Add fudge factor here for final descale. */ tmp10 = wsptr[0] + (ONE << (CONST_BITS+2)); /* Odd part */ tmp0 = wsptr[1]; /* Final output stage */ outptr[0] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, CONST_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[(int) RIGHT_SHIFT(tmp10 - tmp0, CONST_BITS+3) & RANGE_MASK]; wsptr += 2; /* advance pointer to next row */ } } /* * Perform dequantization and inverse DCT on one block of coefficients, * producing a 1x2 output block. * * 2-point IDCT in pass 1 (columns), 1-point in pass 2 (rows). */ GLOBAL(void) jpeg_idct_1x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { INT32 tmp0, tmp10; ISLOW_MULT_TYPE * quantptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); SHIFT_TEMPS /* Process 1 column from input, store into output array. */ quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; /* Even part */ tmp10 = DEQUANTIZE(coef_block[DCTSIZE*0], quantptr[DCTSIZE*0]); /* Add fudge factor here for final descale. */ tmp10 += ONE << 2; /* Odd part */ tmp0 = DEQUANTIZE(coef_block[DCTSIZE*1], quantptr[DCTSIZE*1]); /* Final output stage */ output_buf[0][output_col] = range_limit[(int) RIGHT_SHIFT(tmp10 + tmp0, 3) & RANGE_MASK]; 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jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c @MEMORYMGR@.c # System dependent sources SYSDEPSOURCES = jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # Headers which are installed to support the library INSTINCLUDES = jerror.h jmorecfg.h jpeglib.h # Headers which are not installed OTHERINCLUDES = cderror.h cdjpeg.h jdct.h jinclude.h jmemsys.h jpegint.h \ jversion.h transupp.h # Manual pages (Automake uses 'MANS' for itself) DISTMANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1 # Other documentation files DOCS = README install.txt usage.txt 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ccccȡ""""""""""="=PyyyyDDDxxDxyy44***--------GG**4""""ccccccccȡ-,,wkf;;{qqHccȡc""""""""""""""""---**DyDDYDxDxDyy4****---------G**]"ȡccccccȡ]Ͳʜ;ooo$ =Hccȡcc"""""=""="""""-G**DDDxDxxxD4*****--------G-G*Z-ݡ}ccccc]יeͲѭ1feoLLLoMqqHHccc"""kkkkk="k"=k="-]444DDDDDDDxDxxDxy44******-------GG***]"cccccȡk]]g7e ͲoLLo_Mq=Hjpeg-8d1/jdhuff.c0000644000175000017500000013636611255116536012461 0ustar billbill/* * jdhuff.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2006-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains Huffman entropy decoding routines. * Both sequential and progressive modes are supported in this single module. * * Much of the complexity here has to do with supporting input suspension. * If the data source module demands suspension, we want to be able to back * up to the start of the current MCU. To do this, we copy state variables * into local working storage, and update them back to the permanent * storage only upon successful completion of an MCU. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Derived data constructed for each Huffman table */ #define HUFF_LOOKAHEAD 8 /* # of bits of lookahead */ typedef struct { /* Basic tables: (element [0] of each array is unused) */ INT32 maxcode[18]; /* largest code of length k (-1 if none) */ /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */ INT32 valoffset[17]; /* huffval[] offset for codes of length k */ /* valoffset[k] = huffval[] index of 1st symbol of code length k, less * the smallest code of length k; so given a code of length k, the * corresponding symbol is huffval[code + valoffset[k]] */ /* Link to public Huffman table (needed only in jpeg_huff_decode) */ JHUFF_TBL *pub; /* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of * the input data stream. If the next Huffman code is no more * than HUFF_LOOKAHEAD bits long, we can obtain its length and * the corresponding symbol directly from these tables. */ int look_nbits[1< 32 bits on your machine, and shifting/masking longs is * reasonably fast, making bit_buf_type be long and setting BIT_BUF_SIZE * appropriately should be a win. Unfortunately we can't define the size * with something like #define BIT_BUF_SIZE (sizeof(bit_buf_type)*8) * because not all machines measure sizeof in 8-bit bytes. */ typedef struct { /* Bitreading state saved across MCUs */ bit_buf_type get_buffer; /* current bit-extraction buffer */ int bits_left; /* # of unused bits in it */ } bitread_perm_state; typedef struct { /* Bitreading working state within an MCU */ /* Current data source location */ /* We need a copy, rather than munging the original, in case of suspension */ const JOCTET * next_input_byte; /* => next byte to read from source */ size_t bytes_in_buffer; /* # of bytes remaining in source buffer */ /* Bit input buffer --- note these values are kept in register variables, * not in this struct, inside the inner loops. */ bit_buf_type get_buffer; /* current bit-extraction buffer */ int bits_left; /* # of unused bits in it */ /* Pointer needed by jpeg_fill_bit_buffer. */ j_decompress_ptr cinfo; /* back link to decompress master record */ } bitread_working_state; /* Macros to declare and load/save bitread local variables. */ #define BITREAD_STATE_VARS \ register bit_buf_type get_buffer; \ register int bits_left; \ bitread_working_state br_state #define BITREAD_LOAD_STATE(cinfop,permstate) \ br_state.cinfo = cinfop; \ br_state.next_input_byte = cinfop->src->next_input_byte; \ br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \ get_buffer = permstate.get_buffer; \ bits_left = permstate.bits_left; #define BITREAD_SAVE_STATE(cinfop,permstate) \ cinfop->src->next_input_byte = br_state.next_input_byte; \ cinfop->src->bytes_in_buffer = br_state.bytes_in_buffer; \ permstate.get_buffer = get_buffer; \ permstate.bits_left = bits_left /* * These macros provide the in-line portion of bit fetching. * Use CHECK_BIT_BUFFER to ensure there are N bits in get_buffer * before using GET_BITS, PEEK_BITS, or DROP_BITS. * The variables get_buffer and bits_left are assumed to be locals, * but the state struct might not be (jpeg_huff_decode needs this). * CHECK_BIT_BUFFER(state,n,action); * Ensure there are N bits in get_buffer; if suspend, take action. * val = GET_BITS(n); * Fetch next N bits. * val = PEEK_BITS(n); * Fetch next N bits without removing them from the buffer. * DROP_BITS(n); * Discard next N bits. * The value N should be a simple variable, not an expression, because it * is evaluated multiple times. */ #define CHECK_BIT_BUFFER(state,nbits,action) \ { if (bits_left < (nbits)) { \ if (! jpeg_fill_bit_buffer(&(state),get_buffer,bits_left,nbits)) \ { action; } \ get_buffer = (state).get_buffer; bits_left = (state).bits_left; } } #define GET_BITS(nbits) \ (((int) (get_buffer >> (bits_left -= (nbits)))) & BIT_MASK(nbits)) #define PEEK_BITS(nbits) \ (((int) (get_buffer >> (bits_left - (nbits)))) & BIT_MASK(nbits)) #define DROP_BITS(nbits) \ (bits_left -= (nbits)) /* * Code for extracting next Huffman-coded symbol from input bit stream. * Again, this is time-critical and we make the main paths be macros. * * We use a lookahead table to process codes of up to HUFF_LOOKAHEAD bits * without looping. Usually, more than 95% of the Huffman codes will be 8 * or fewer bits long. The few overlength codes are handled with a loop, * which need not be inline code. * * Notes about the HUFF_DECODE macro: * 1. Near the end of the data segment, we may fail to get enough bits * for a lookahead. In that case, we do it the hard way. * 2. If the lookahead table contains no entry, the next code must be * more than HUFF_LOOKAHEAD bits long. * 3. jpeg_huff_decode returns -1 if forced to suspend. */ #define HUFF_DECODE(result,state,htbl,failaction,slowlabel) \ { register int nb, look; \ if (bits_left < HUFF_LOOKAHEAD) { \ if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \ get_buffer = state.get_buffer; bits_left = state.bits_left; \ if (bits_left < HUFF_LOOKAHEAD) { \ nb = 1; goto slowlabel; \ } \ } \ look = PEEK_BITS(HUFF_LOOKAHEAD); \ if ((nb = htbl->look_nbits[look]) != 0) { \ DROP_BITS(nb); \ result = htbl->look_sym[look]; \ } else { \ nb = HUFF_LOOKAHEAD+1; \ slowlabel: \ if ((result=jpeg_huff_decode(&state,get_buffer,bits_left,htbl,nb)) < 0) \ { failaction; } \ get_buffer = state.get_buffer; bits_left = state.bits_left; \ } \ } /* * Expanded entropy decoder object for Huffman decoding. * * The savable_state subrecord contains fields that change within an MCU, * but must not be updated permanently until we complete the MCU. */ typedef struct { unsigned int EOBRUN; /* remaining EOBs in EOBRUN */ int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ } savable_state; /* This macro is to work around compilers with missing or broken * structure assignment. You'll need to fix this code if you have * such a compiler and you change MAX_COMPS_IN_SCAN. */ #ifndef NO_STRUCT_ASSIGN #define ASSIGN_STATE(dest,src) ((dest) = (src)) #else #if MAX_COMPS_IN_SCAN == 4 #define ASSIGN_STATE(dest,src) \ ((dest).EOBRUN = (src).EOBRUN, \ (dest).last_dc_val[0] = (src).last_dc_val[0], \ (dest).last_dc_val[1] = (src).last_dc_val[1], \ (dest).last_dc_val[2] = (src).last_dc_val[2], \ (dest).last_dc_val[3] = (src).last_dc_val[3]) #endif #endif typedef struct { struct jpeg_entropy_decoder pub; /* public fields */ /* These fields are loaded into local variables at start of each MCU. * In case of suspension, we exit WITHOUT updating them. */ bitread_perm_state bitstate; /* Bit buffer at start of MCU */ savable_state saved; /* Other state at start of MCU */ /* These fields are NOT loaded into local working state. */ boolean insufficient_data; /* set TRUE after emitting warning */ unsigned int restarts_to_go; /* MCUs left in this restart interval */ /* Following two fields used only in progressive mode */ /* Pointers to derived tables (these workspaces have image lifespan) */ d_derived_tbl * derived_tbls[NUM_HUFF_TBLS]; d_derived_tbl * ac_derived_tbl; /* active table during an AC scan */ /* Following fields used only in sequential mode */ /* Pointers to derived tables (these workspaces have image lifespan) */ d_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS]; d_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS]; /* Precalculated info set up by start_pass for use in decode_mcu: */ /* Pointers to derived tables to be used for each block within an MCU */ d_derived_tbl * dc_cur_tbls[D_MAX_BLOCKS_IN_MCU]; d_derived_tbl * ac_cur_tbls[D_MAX_BLOCKS_IN_MCU]; /* Whether we care about the DC and AC coefficient values for each block */ int coef_limit[D_MAX_BLOCKS_IN_MCU]; } huff_entropy_decoder; typedef huff_entropy_decoder * huff_entropy_ptr; static const int jpeg_zigzag_order[8][8] = { { 0, 1, 5, 6, 14, 15, 27, 28 }, { 2, 4, 7, 13, 16, 26, 29, 42 }, { 3, 8, 12, 17, 25, 30, 41, 43 }, { 9, 11, 18, 24, 31, 40, 44, 53 }, { 10, 19, 23, 32, 39, 45, 52, 54 }, { 20, 22, 33, 38, 46, 51, 55, 60 }, { 21, 34, 37, 47, 50, 56, 59, 61 }, { 35, 36, 48, 49, 57, 58, 62, 63 } }; static const int jpeg_zigzag_order7[7][7] = { { 0, 1, 5, 6, 14, 15, 27 }, { 2, 4, 7, 13, 16, 26, 28 }, { 3, 8, 12, 17, 25, 29, 38 }, { 9, 11, 18, 24, 30, 37, 39 }, { 10, 19, 23, 31, 36, 40, 45 }, { 20, 22, 32, 35, 41, 44, 46 }, { 21, 33, 34, 42, 43, 47, 48 } }; static const int jpeg_zigzag_order6[6][6] = { { 0, 1, 5, 6, 14, 15 }, { 2, 4, 7, 13, 16, 25 }, { 3, 8, 12, 17, 24, 26 }, { 9, 11, 18, 23, 27, 32 }, { 10, 19, 22, 28, 31, 33 }, { 20, 21, 29, 30, 34, 35 } }; static const int jpeg_zigzag_order5[5][5] = { { 0, 1, 5, 6, 14 }, { 2, 4, 7, 13, 15 }, { 3, 8, 12, 16, 21 }, { 9, 11, 17, 20, 22 }, { 10, 18, 19, 23, 24 } }; static const int jpeg_zigzag_order4[4][4] = { { 0, 1, 5, 6 }, { 2, 4, 7, 12 }, { 3, 8, 11, 13 }, { 9, 10, 14, 15 } }; static const int jpeg_zigzag_order3[3][3] = { { 0, 1, 5 }, { 2, 4, 6 }, { 3, 7, 8 } }; static const int jpeg_zigzag_order2[2][2] = { { 0, 1 }, { 2, 3 } }; /* * Compute the derived values for a Huffman table. * This routine also performs some validation checks on the table. */ LOCAL(void) jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, boolean isDC, int tblno, d_derived_tbl ** pdtbl) { JHUFF_TBL *htbl; d_derived_tbl *dtbl; int p, i, l, si, numsymbols; int lookbits, ctr; char huffsize[257]; unsigned int huffcode[257]; unsigned int code; /* Note that huffsize[] and huffcode[] are filled in code-length order, * paralleling the order of the symbols themselves in htbl->huffval[]. */ /* Find the input Huffman table */ if (tblno < 0 || tblno >= NUM_HUFF_TBLS) ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); htbl = isDC ? cinfo->dc_huff_tbl_ptrs[tblno] : cinfo->ac_huff_tbl_ptrs[tblno]; if (htbl == NULL) ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); /* Allocate a workspace if we haven't already done so. */ if (*pdtbl == NULL) *pdtbl = (d_derived_tbl *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(d_derived_tbl)); dtbl = *pdtbl; dtbl->pub = htbl; /* fill in back link */ /* Figure C.1: make table of Huffman code length for each symbol */ p = 0; for (l = 1; l <= 16; l++) { i = (int) htbl->bits[l]; if (i < 0 || p + i > 256) /* protect against table overrun */ ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); while (i--) huffsize[p++] = (char) l; } huffsize[p] = 0; numsymbols = p; /* Figure C.2: generate the codes themselves */ /* We also validate that the counts represent a legal Huffman code tree. */ code = 0; si = huffsize[0]; p = 0; while (huffsize[p]) { while (((int) huffsize[p]) == si) { huffcode[p++] = code; code++; } /* code is now 1 more than the last code used for codelength si; but * it must still fit in si bits, since no code is allowed to be all ones. */ if (((INT32) code) >= (((INT32) 1) << si)) ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); code <<= 1; si++; } /* Figure F.15: generate decoding tables for bit-sequential decoding */ p = 0; for (l = 1; l <= 16; l++) { if (htbl->bits[l]) { /* valoffset[l] = huffval[] index of 1st symbol of code length l, * minus the minimum code of length l */ dtbl->valoffset[l] = (INT32) p - (INT32) huffcode[p]; p += htbl->bits[l]; dtbl->maxcode[l] = huffcode[p-1]; /* maximum code of length l */ } else { dtbl->maxcode[l] = -1; /* -1 if no codes of this length */ } } dtbl->maxcode[17] = 0xFFFFFL; /* ensures jpeg_huff_decode terminates */ /* Compute lookahead tables to speed up decoding. * First we set all the table entries to 0, indicating "too long"; * then we iterate through the Huffman codes that are short enough and * fill in all the entries that correspond to bit sequences starting * with that code. */ MEMZERO(dtbl->look_nbits, SIZEOF(dtbl->look_nbits)); p = 0; for (l = 1; l <= HUFF_LOOKAHEAD; l++) { for (i = 1; i <= (int) htbl->bits[l]; i++, p++) { /* l = current code's length, p = its index in huffcode[] & huffval[]. */ /* Generate left-justified code followed by all possible bit sequences */ lookbits = huffcode[p] << (HUFF_LOOKAHEAD-l); for (ctr = 1 << (HUFF_LOOKAHEAD-l); ctr > 0; ctr--) { dtbl->look_nbits[lookbits] = l; dtbl->look_sym[lookbits] = htbl->huffval[p]; lookbits++; } } } /* Validate symbols as being reasonable. * For AC tables, we make no check, but accept all byte values 0..255. * For DC tables, we require the symbols to be in range 0..15. * (Tighter bounds could be applied depending on the data depth and mode, * but this is sufficient to ensure safe decoding.) */ if (isDC) { for (i = 0; i < numsymbols; i++) { int sym = htbl->huffval[i]; if (sym < 0 || sym > 15) ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); } } } /* * Out-of-line code for bit fetching. * Note: current values of get_buffer and bits_left are passed as parameters, * but are returned in the corresponding fields of the state struct. * * On most machines MIN_GET_BITS should be 25 to allow the full 32-bit width * of get_buffer to be used. (On machines with wider words, an even larger * buffer could be used.) However, on some machines 32-bit shifts are * quite slow and take time proportional to the number of places shifted. * (This is true with most PC compilers, for instance.) In this case it may * be a win to set MIN_GET_BITS to the minimum value of 15. This reduces the * average shift distance at the cost of more calls to jpeg_fill_bit_buffer. */ #ifdef SLOW_SHIFT_32 #define MIN_GET_BITS 15 /* minimum allowable value */ #else #define MIN_GET_BITS (BIT_BUF_SIZE-7) #endif LOCAL(boolean) jpeg_fill_bit_buffer (bitread_working_state * state, register bit_buf_type get_buffer, register int bits_left, int nbits) /* Load up the bit buffer to a depth of at least nbits */ { /* Copy heavily used state fields into locals (hopefully registers) */ register const JOCTET * next_input_byte = state->next_input_byte; register size_t bytes_in_buffer = state->bytes_in_buffer; j_decompress_ptr cinfo = state->cinfo; /* Attempt to load at least MIN_GET_BITS bits into get_buffer. */ /* (It is assumed that no request will be for more than that many bits.) */ /* We fail to do so only if we hit a marker or are forced to suspend. */ if (cinfo->unread_marker == 0) { /* cannot advance past a marker */ while (bits_left < MIN_GET_BITS) { register int c; /* Attempt to read a byte */ if (bytes_in_buffer == 0) { if (! (*cinfo->src->fill_input_buffer) (cinfo)) return FALSE; next_input_byte = cinfo->src->next_input_byte; bytes_in_buffer = cinfo->src->bytes_in_buffer; } bytes_in_buffer--; c = GETJOCTET(*next_input_byte++); /* If it's 0xFF, check and discard stuffed zero byte */ if (c == 0xFF) { /* Loop here to discard any padding FF's on terminating marker, * so that we can save a valid unread_marker value. NOTE: we will * accept multiple FF's followed by a 0 as meaning a single FF data * byte. This data pattern is not valid according to the standard. */ do { if (bytes_in_buffer == 0) { if (! (*cinfo->src->fill_input_buffer) (cinfo)) return FALSE; next_input_byte = cinfo->src->next_input_byte; bytes_in_buffer = cinfo->src->bytes_in_buffer; } bytes_in_buffer--; c = GETJOCTET(*next_input_byte++); } while (c == 0xFF); if (c == 0) { /* Found FF/00, which represents an FF data byte */ c = 0xFF; } else { /* Oops, it's actually a marker indicating end of compressed data. * Save the marker code for later use. * Fine point: it might appear that we should save the marker into * bitread working state, not straight into permanent state. But * once we have hit a marker, we cannot need to suspend within the * current MCU, because we will read no more bytes from the data * source. So it is OK to update permanent state right away. */ cinfo->unread_marker = c; /* See if we need to insert some fake zero bits. */ goto no_more_bytes; } } /* OK, load c into get_buffer */ get_buffer = (get_buffer << 8) | c; bits_left += 8; } /* end while */ } else { no_more_bytes: /* We get here if we've read the marker that terminates the compressed * data segment. There should be enough bits in the buffer register * to satisfy the request; if so, no problem. */ if (nbits > bits_left) { /* Uh-oh. Report corrupted data to user and stuff zeroes into * the data stream, so that we can produce some kind of image. * We use a nonvolatile flag to ensure that only one warning message * appears per data segment. */ if (! ((huff_entropy_ptr) cinfo->entropy)->insufficient_data) { WARNMS(cinfo, JWRN_HIT_MARKER); ((huff_entropy_ptr) cinfo->entropy)->insufficient_data = TRUE; } /* Fill the buffer with zero bits */ get_buffer <<= MIN_GET_BITS - bits_left; bits_left = MIN_GET_BITS; } } /* Unload the local registers */ state->next_input_byte = next_input_byte; state->bytes_in_buffer = bytes_in_buffer; state->get_buffer = get_buffer; state->bits_left = bits_left; return TRUE; } /* * Figure F.12: extend sign bit. * On some machines, a shift and sub will be faster than a table lookup. */ #ifdef AVOID_TABLES #define BIT_MASK(nbits) ((1<<(nbits))-1) #define HUFF_EXTEND(x,s) ((x) < (1<<((s)-1)) ? (x) - ((1<<(s))-1) : (x)) #else #define BIT_MASK(nbits) bmask[nbits] #define HUFF_EXTEND(x,s) ((x) <= bmask[(s) - 1] ? (x) - bmask[s] : (x)) static const int bmask[16] = /* bmask[n] is mask for n rightmost bits */ { 0, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF }; #endif /* AVOID_TABLES */ /* * Out-of-line code for Huffman code decoding. */ LOCAL(int) jpeg_huff_decode (bitread_working_state * state, register bit_buf_type get_buffer, register int bits_left, d_derived_tbl * htbl, int min_bits) { register int l = min_bits; register INT32 code; /* HUFF_DECODE has determined that the code is at least min_bits */ /* bits long, so fetch that many bits in one swoop. */ CHECK_BIT_BUFFER(*state, l, return -1); code = GET_BITS(l); /* Collect the rest of the Huffman code one bit at a time. */ /* This is per Figure F.16 in the JPEG spec. */ while (code > htbl->maxcode[l]) { code <<= 1; CHECK_BIT_BUFFER(*state, 1, return -1); code |= GET_BITS(1); l++; } /* Unload the local registers */ state->get_buffer = get_buffer; state->bits_left = bits_left; /* With garbage input we may reach the sentinel value l = 17. */ if (l > 16) { WARNMS(state->cinfo, JWRN_HUFF_BAD_CODE); return 0; /* fake a zero as the safest result */ } return htbl->pub->huffval[ (int) (code + htbl->valoffset[l]) ]; } /* * Check for a restart marker & resynchronize decoder. * Returns FALSE if must suspend. */ LOCAL(boolean) process_restart (j_decompress_ptr cinfo) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int ci; /* Throw away any unused bits remaining in bit buffer; */ /* include any full bytes in next_marker's count of discarded bytes */ cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8; entropy->bitstate.bits_left = 0; /* Advance past the RSTn marker */ if (! (*cinfo->marker->read_restart_marker) (cinfo)) return FALSE; /* Re-initialize DC predictions to 0 */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) entropy->saved.last_dc_val[ci] = 0; /* Re-init EOB run count, too */ entropy->saved.EOBRUN = 0; /* Reset restart counter */ entropy->restarts_to_go = cinfo->restart_interval; /* Reset out-of-data flag, unless read_restart_marker left us smack up * against a marker. In that case we will end up treating the next data * segment as empty, and we can avoid producing bogus output pixels by * leaving the flag set. */ if (cinfo->unread_marker == 0) entropy->insufficient_data = FALSE; return TRUE; } /* * Huffman MCU decoding. * Each of these routines decodes and returns one MCU's worth of * Huffman-compressed coefficients. * The coefficients are reordered from zigzag order into natural array order, * but are not dequantized. * * The i'th block of the MCU is stored into the block pointed to by * MCU_data[i]. WE ASSUME THIS AREA IS INITIALLY ZEROED BY THE CALLER. * (Wholesale zeroing is usually a little faster than retail...) * * We return FALSE if data source requested suspension. In that case no * changes have been made to permanent state. (Exception: some output * coefficients may already have been assigned. This is harmless for * spectral selection, since we'll just re-assign them on the next call. * Successive approximation AC refinement has to be more careful, however.) */ /* * MCU decoding for DC initial scan (either spectral selection, * or first pass of successive approximation). */ METHODDEF(boolean) decode_mcu_DC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int Al = cinfo->Al; register int s, r; int blkn, ci; JBLOCKROW block; BITREAD_STATE_VARS; savable_state state; d_derived_tbl * tbl; jpeg_component_info * compptr; /* Process restart marker if needed; may have to suspend */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! process_restart(cinfo)) return FALSE; } /* If we've run out of data, just leave the MCU set to zeroes. * This way, we return uniform gray for the remainder of the segment. */ if (! entropy->insufficient_data) { /* Load up working state */ BITREAD_LOAD_STATE(cinfo,entropy->bitstate); ASSIGN_STATE(state, entropy->saved); /* Outer loop handles each block in the MCU */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { block = MCU_data[blkn]; ci = cinfo->MCU_membership[blkn]; compptr = cinfo->cur_comp_info[ci]; tbl = entropy->derived_tbls[compptr->dc_tbl_no]; /* Decode a single block's worth of coefficients */ /* Section F.2.2.1: decode the DC coefficient difference */ HUFF_DECODE(s, br_state, tbl, return FALSE, label1); if (s) { CHECK_BIT_BUFFER(br_state, s, return FALSE); r = GET_BITS(s); s = HUFF_EXTEND(r, s); } /* Convert DC difference to actual value, update last_dc_val */ s += state.last_dc_val[ci]; state.last_dc_val[ci] = s; /* Scale and output the coefficient (assumes jpeg_natural_order[0]=0) */ (*block)[0] = (JCOEF) (s << Al); } /* Completed MCU, so update state */ BITREAD_SAVE_STATE(cinfo,entropy->bitstate); ASSIGN_STATE(entropy->saved, state); } /* Account for restart interval (no-op if not using restarts) */ entropy->restarts_to_go--; return TRUE; } /* * MCU decoding for AC initial scan (either spectral selection, * or first pass of successive approximation). */ METHODDEF(boolean) decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; register int s, k, r; unsigned int EOBRUN; int Se, Al; const int * natural_order; JBLOCKROW block; BITREAD_STATE_VARS; d_derived_tbl * tbl; /* Process restart marker if needed; may have to suspend */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! process_restart(cinfo)) return FALSE; } /* If we've run out of data, just leave the MCU set to zeroes. * This way, we return uniform gray for the remainder of the segment. */ if (! entropy->insufficient_data) { Se = cinfo->Se; Al = cinfo->Al; natural_order = cinfo->natural_order; /* Load up working state. * We can avoid loading/saving bitread state if in an EOB run. */ EOBRUN = entropy->saved.EOBRUN; /* only part of saved state we need */ /* There is always only one block per MCU */ if (EOBRUN > 0) /* if it's a band of zeroes... */ EOBRUN--; /* ...process it now (we do nothing) */ else { BITREAD_LOAD_STATE(cinfo,entropy->bitstate); block = MCU_data[0]; tbl = entropy->ac_derived_tbl; for (k = cinfo->Ss; k <= Se; k++) { HUFF_DECODE(s, br_state, tbl, return FALSE, label2); r = s >> 4; s &= 15; if (s) { k += r; CHECK_BIT_BUFFER(br_state, s, return FALSE); r = GET_BITS(s); s = HUFF_EXTEND(r, s); /* Scale and output coefficient in natural (dezigzagged) order */ (*block)[natural_order[k]] = (JCOEF) (s << Al); } else { if (r == 15) { /* ZRL */ k += 15; /* skip 15 zeroes in band */ } else { /* EOBr, run length is 2^r + appended bits */ EOBRUN = 1 << r; if (r) { /* EOBr, r > 0 */ CHECK_BIT_BUFFER(br_state, r, return FALSE); r = GET_BITS(r); EOBRUN += r; } EOBRUN--; /* this band is processed at this moment */ break; /* force end-of-band */ } } } BITREAD_SAVE_STATE(cinfo,entropy->bitstate); } /* Completed MCU, so update state */ entropy->saved.EOBRUN = EOBRUN; /* only part of saved state we need */ } /* Account for restart interval (no-op if not using restarts) */ entropy->restarts_to_go--; return TRUE; } /* * MCU decoding for DC successive approximation refinement scan. * Note: we assume such scans can be multi-component, although the spec * is not very clear on the point. */ METHODDEF(boolean) decode_mcu_DC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int p1 = 1 << cinfo->Al; /* 1 in the bit position being coded */ int blkn; JBLOCKROW block; BITREAD_STATE_VARS; /* Process restart marker if needed; may have to suspend */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! process_restart(cinfo)) return FALSE; } /* Not worth the cycles to check insufficient_data here, * since we will not change the data anyway if we read zeroes. */ /* Load up working state */ BITREAD_LOAD_STATE(cinfo,entropy->bitstate); /* Outer loop handles each block in the MCU */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { block = MCU_data[blkn]; /* Encoded data is simply the next bit of the two's-complement DC value */ CHECK_BIT_BUFFER(br_state, 1, return FALSE); if (GET_BITS(1)) (*block)[0] |= p1; /* Note: since we use |=, repeating the assignment later is safe */ } /* Completed MCU, so update state */ BITREAD_SAVE_STATE(cinfo,entropy->bitstate); /* Account for restart interval (no-op if not using restarts) */ entropy->restarts_to_go--; return TRUE; } /* * MCU decoding for AC successive approximation refinement scan. */ METHODDEF(boolean) decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; register int s, k, r; unsigned int EOBRUN; int Se, p1, m1; const int * natural_order; JBLOCKROW block; JCOEFPTR thiscoef; BITREAD_STATE_VARS; d_derived_tbl * tbl; int num_newnz; int newnz_pos[DCTSIZE2]; /* Process restart marker if needed; may have to suspend */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! process_restart(cinfo)) return FALSE; } /* If we've run out of data, don't modify the MCU. */ if (! entropy->insufficient_data) { Se = cinfo->Se; p1 = 1 << cinfo->Al; /* 1 in the bit position being coded */ m1 = (-1) << cinfo->Al; /* -1 in the bit position being coded */ natural_order = cinfo->natural_order; /* Load up working state */ BITREAD_LOAD_STATE(cinfo,entropy->bitstate); EOBRUN = entropy->saved.EOBRUN; /* only part of saved state we need */ /* There is always only one block per MCU */ block = MCU_data[0]; tbl = entropy->ac_derived_tbl; /* If we are forced to suspend, we must undo the assignments to any newly * nonzero coefficients in the block, because otherwise we'd get confused * next time about which coefficients were already nonzero. * But we need not undo addition of bits to already-nonzero coefficients; * instead, we can test the current bit to see if we already did it. */ num_newnz = 0; /* initialize coefficient loop counter to start of band */ k = cinfo->Ss; if (EOBRUN == 0) { for (; k <= Se; k++) { HUFF_DECODE(s, br_state, tbl, goto undoit, label3); r = s >> 4; s &= 15; if (s) { if (s != 1) /* size of new coef should always be 1 */ WARNMS(cinfo, JWRN_HUFF_BAD_CODE); CHECK_BIT_BUFFER(br_state, 1, goto undoit); if (GET_BITS(1)) s = p1; /* newly nonzero coef is positive */ else s = m1; /* newly nonzero coef is negative */ } else { if (r != 15) { EOBRUN = 1 << r; /* EOBr, run length is 2^r + appended bits */ if (r) { CHECK_BIT_BUFFER(br_state, r, goto undoit); r = GET_BITS(r); EOBRUN += r; } break; /* rest of block is handled by EOB logic */ } /* note s = 0 for processing ZRL */ } /* Advance over already-nonzero coefs and r still-zero coefs, * appending correction bits to the nonzeroes. A correction bit is 1 * if the absolute value of the coefficient must be increased. */ do { thiscoef = *block + natural_order[k]; if (*thiscoef != 0) { CHECK_BIT_BUFFER(br_state, 1, goto undoit); if (GET_BITS(1)) { if ((*thiscoef & p1) == 0) { /* do nothing if already set it */ if (*thiscoef >= 0) *thiscoef += p1; else *thiscoef += m1; } } } else { if (--r < 0) break; /* reached target zero coefficient */ } k++; } while (k <= Se); if (s) { int pos = natural_order[k]; /* Output newly nonzero coefficient */ (*block)[pos] = (JCOEF) s; /* Remember its position in case we have to suspend */ newnz_pos[num_newnz++] = pos; } } } if (EOBRUN > 0) { /* Scan any remaining coefficient positions after the end-of-band * (the last newly nonzero coefficient, if any). Append a correction * bit to each already-nonzero coefficient. A correction bit is 1 * if the absolute value of the coefficient must be increased. */ for (; k <= Se; k++) { thiscoef = *block + natural_order[k]; if (*thiscoef != 0) { CHECK_BIT_BUFFER(br_state, 1, goto undoit); if (GET_BITS(1)) { if ((*thiscoef & p1) == 0) { /* do nothing if already changed it */ if (*thiscoef >= 0) *thiscoef += p1; else *thiscoef += m1; } } } } /* Count one block completed in EOB run */ EOBRUN--; } /* Completed MCU, so update state */ BITREAD_SAVE_STATE(cinfo,entropy->bitstate); entropy->saved.EOBRUN = EOBRUN; /* only part of saved state we need */ } /* Account for restart interval (no-op if not using restarts) */ entropy->restarts_to_go--; return TRUE; undoit: /* Re-zero any output coefficients that we made newly nonzero */ while (num_newnz > 0) (*block)[newnz_pos[--num_newnz]] = 0; return FALSE; } /* * Decode one MCU's worth of Huffman-compressed coefficients, * partial blocks. */ METHODDEF(boolean) decode_mcu_sub (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; const int * natural_order; int Se, blkn; BITREAD_STATE_VARS; savable_state state; /* Process restart marker if needed; may have to suspend */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! process_restart(cinfo)) return FALSE; } /* If we've run out of data, just leave the MCU set to zeroes. * This way, we return uniform gray for the remainder of the segment. */ if (! entropy->insufficient_data) { natural_order = cinfo->natural_order; Se = cinfo->lim_Se; /* Load up working state */ BITREAD_LOAD_STATE(cinfo,entropy->bitstate); ASSIGN_STATE(state, entropy->saved); /* Outer loop handles each block in the MCU */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { JBLOCKROW block = MCU_data[blkn]; d_derived_tbl * htbl; register int s, k, r; int coef_limit, ci; /* Decode a single block's worth of coefficients */ /* Section F.2.2.1: decode the DC coefficient difference */ htbl = entropy->dc_cur_tbls[blkn]; HUFF_DECODE(s, br_state, htbl, return FALSE, label1); htbl = entropy->ac_cur_tbls[blkn]; k = 1; coef_limit = entropy->coef_limit[blkn]; if (coef_limit) { /* Convert DC difference to actual value, update last_dc_val */ if (s) { CHECK_BIT_BUFFER(br_state, s, return FALSE); r = GET_BITS(s); s = HUFF_EXTEND(r, s); } ci = cinfo->MCU_membership[blkn]; s += state.last_dc_val[ci]; state.last_dc_val[ci] = s; /* Output the DC coefficient */ (*block)[0] = (JCOEF) s; /* Section F.2.2.2: decode the AC coefficients */ /* Since zeroes are skipped, output area must be cleared beforehand */ for (; k < coef_limit; k++) { HUFF_DECODE(s, br_state, htbl, return FALSE, label2); r = s >> 4; s &= 15; if (s) { k += r; CHECK_BIT_BUFFER(br_state, s, return FALSE); r = GET_BITS(s); s = HUFF_EXTEND(r, s); /* Output coefficient in natural (dezigzagged) order. * Note: the extra entries in natural_order[] will save us * if k > Se, which could happen if the data is corrupted. */ (*block)[natural_order[k]] = (JCOEF) s; } else { if (r != 15) goto EndOfBlock; k += 15; } } } else { if (s) { CHECK_BIT_BUFFER(br_state, s, return FALSE); DROP_BITS(s); } } /* Section F.2.2.2: decode the AC coefficients */ /* In this path we just discard the values */ for (; k <= Se; k++) { HUFF_DECODE(s, br_state, htbl, return FALSE, label3); r = s >> 4; s &= 15; if (s) { k += r; CHECK_BIT_BUFFER(br_state, s, return FALSE); DROP_BITS(s); } else { if (r != 15) break; k += 15; } } EndOfBlock: ; } /* Completed MCU, so update state */ BITREAD_SAVE_STATE(cinfo,entropy->bitstate); ASSIGN_STATE(entropy->saved, state); } /* Account for restart interval (no-op if not using restarts) */ entropy->restarts_to_go--; return TRUE; } /* * Decode one MCU's worth of Huffman-compressed coefficients, * full-size blocks. */ METHODDEF(boolean) decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int blkn; BITREAD_STATE_VARS; savable_state state; /* Process restart marker if needed; may have to suspend */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! process_restart(cinfo)) return FALSE; } /* If we've run out of data, just leave the MCU set to zeroes. * This way, we return uniform gray for the remainder of the segment. */ if (! entropy->insufficient_data) { /* Load up working state */ BITREAD_LOAD_STATE(cinfo,entropy->bitstate); ASSIGN_STATE(state, entropy->saved); /* Outer loop handles each block in the MCU */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { JBLOCKROW block = MCU_data[blkn]; d_derived_tbl * htbl; register int s, k, r; int coef_limit, ci; /* Decode a single block's worth of coefficients */ /* Section F.2.2.1: decode the DC coefficient difference */ htbl = entropy->dc_cur_tbls[blkn]; HUFF_DECODE(s, br_state, htbl, return FALSE, label1); htbl = entropy->ac_cur_tbls[blkn]; k = 1; coef_limit = entropy->coef_limit[blkn]; if (coef_limit) { /* Convert DC difference to actual value, update last_dc_val */ if (s) { CHECK_BIT_BUFFER(br_state, s, return FALSE); r = GET_BITS(s); s = HUFF_EXTEND(r, s); } ci = cinfo->MCU_membership[blkn]; s += state.last_dc_val[ci]; state.last_dc_val[ci] = s; /* Output the DC coefficient */ (*block)[0] = (JCOEF) s; /* Section F.2.2.2: decode the AC coefficients */ /* Since zeroes are skipped, output area must be cleared beforehand */ for (; k < coef_limit; k++) { HUFF_DECODE(s, br_state, htbl, return FALSE, label2); r = s >> 4; s &= 15; if (s) { k += r; CHECK_BIT_BUFFER(br_state, s, return FALSE); r = GET_BITS(s); s = HUFF_EXTEND(r, s); /* Output coefficient in natural (dezigzagged) order. * Note: the extra entries in jpeg_natural_order[] will save us * if k >= DCTSIZE2, which could happen if the data is corrupted. */ (*block)[jpeg_natural_order[k]] = (JCOEF) s; } else { if (r != 15) goto EndOfBlock; k += 15; } } } else { if (s) { CHECK_BIT_BUFFER(br_state, s, return FALSE); DROP_BITS(s); } } /* Section F.2.2.2: decode the AC coefficients */ /* In this path we just discard the values */ for (; k < DCTSIZE2; k++) { HUFF_DECODE(s, br_state, htbl, return FALSE, label3); r = s >> 4; s &= 15; if (s) { k += r; CHECK_BIT_BUFFER(br_state, s, return FALSE); DROP_BITS(s); } else { if (r != 15) break; k += 15; } } EndOfBlock: ; } /* Completed MCU, so update state */ BITREAD_SAVE_STATE(cinfo,entropy->bitstate); ASSIGN_STATE(entropy->saved, state); } /* Account for restart interval (no-op if not using restarts) */ entropy->restarts_to_go--; return TRUE; } /* * Initialize for a Huffman-compressed scan. */ METHODDEF(void) start_pass_huff_decoder (j_decompress_ptr cinfo) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int ci, blkn, tbl, i; jpeg_component_info * compptr; if (cinfo->progressive_mode) { /* Validate progressive scan parameters */ if (cinfo->Ss == 0) { if (cinfo->Se != 0) goto bad; } else { /* need not check Ss/Se < 0 since they came from unsigned bytes */ if (cinfo->Se < cinfo->Ss || cinfo->Se > cinfo->lim_Se) goto bad; /* AC scans may have only one component */ if (cinfo->comps_in_scan != 1) goto bad; } if (cinfo->Ah != 0) { /* Successive approximation refinement scan: must have Al = Ah-1. */ if (cinfo->Ah-1 != cinfo->Al) goto bad; } if (cinfo->Al > 13) { /* need not check for < 0 */ /* Arguably the maximum Al value should be less than 13 for 8-bit precision, * but the spec doesn't say so, and we try to be liberal about what we * accept. Note: large Al values could result in out-of-range DC * coefficients during early scans, leading to bizarre displays due to * overflows in the IDCT math. But we won't crash. */ bad: ERREXIT4(cinfo, JERR_BAD_PROGRESSION, cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al); } /* Update progression status, and verify that scan order is legal. * Note that inter-scan inconsistencies are treated as warnings * not fatal errors ... not clear if this is right way to behave. */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) { int coefi, cindex = cinfo->cur_comp_info[ci]->component_index; int *coef_bit_ptr = & cinfo->coef_bits[cindex][0]; if (cinfo->Ss && coef_bit_ptr[0] < 0) /* AC without prior DC scan */ WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, 0); for (coefi = cinfo->Ss; coefi <= cinfo->Se; coefi++) { int expected = (coef_bit_ptr[coefi] < 0) ? 0 : coef_bit_ptr[coefi]; if (cinfo->Ah != expected) WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, coefi); coef_bit_ptr[coefi] = cinfo->Al; } } /* Select MCU decoding routine */ if (cinfo->Ah == 0) { if (cinfo->Ss == 0) entropy->pub.decode_mcu = decode_mcu_DC_first; else entropy->pub.decode_mcu = decode_mcu_AC_first; } else { if (cinfo->Ss == 0) entropy->pub.decode_mcu = decode_mcu_DC_refine; else entropy->pub.decode_mcu = decode_mcu_AC_refine; } for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* Make sure requested tables are present, and compute derived tables. * We may build same derived table more than once, but it's not expensive. */ if (cinfo->Ss == 0) { if (cinfo->Ah == 0) { /* DC refinement needs no table */ tbl = compptr->dc_tbl_no; jpeg_make_d_derived_tbl(cinfo, TRUE, tbl, & entropy->derived_tbls[tbl]); } } else { tbl = compptr->ac_tbl_no; jpeg_make_d_derived_tbl(cinfo, FALSE, tbl, & entropy->derived_tbls[tbl]); /* remember the single active table */ entropy->ac_derived_tbl = entropy->derived_tbls[tbl]; } /* Initialize DC predictions to 0 */ entropy->saved.last_dc_val[ci] = 0; } /* Initialize private state variables */ entropy->saved.EOBRUN = 0; } else { /* Check that the scan parameters Ss, Se, Ah/Al are OK for sequential JPEG. * This ought to be an error condition, but we make it a warning because * there are some baseline files out there with all zeroes in these bytes. */ if (cinfo->Ss != 0 || cinfo->Ah != 0 || cinfo->Al != 0 || ((cinfo->is_baseline || cinfo->Se < DCTSIZE2) && cinfo->Se != cinfo->lim_Se)) WARNMS(cinfo, JWRN_NOT_SEQUENTIAL); /* Select MCU decoding routine */ /* We retain the hard-coded case for full-size blocks. * This is not necessary, but it appears that this version is slightly * more performant in the given implementation. * With an improved implementation we would prefer a single optimized * function. */ if (cinfo->lim_Se != DCTSIZE2-1) entropy->pub.decode_mcu = decode_mcu_sub; else entropy->pub.decode_mcu = decode_mcu; for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* Compute derived values for Huffman tables */ /* We may do this more than once for a table, but it's not expensive */ tbl = compptr->dc_tbl_no; jpeg_make_d_derived_tbl(cinfo, TRUE, tbl, & entropy->dc_derived_tbls[tbl]); if (cinfo->lim_Se) { /* AC needs no table when not present */ tbl = compptr->ac_tbl_no; jpeg_make_d_derived_tbl(cinfo, FALSE, tbl, & entropy->ac_derived_tbls[tbl]); } /* Initialize DC predictions to 0 */ entropy->saved.last_dc_val[ci] = 0; } /* Precalculate decoding info for each block in an MCU of this scan */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { ci = cinfo->MCU_membership[blkn]; compptr = cinfo->cur_comp_info[ci]; /* Precalculate which table to use for each block */ entropy->dc_cur_tbls[blkn] = entropy->dc_derived_tbls[compptr->dc_tbl_no]; entropy->ac_cur_tbls[blkn] = entropy->ac_derived_tbls[compptr->ac_tbl_no]; /* Decide whether we really care about the coefficient values */ if (compptr->component_needed) { ci = compptr->DCT_v_scaled_size; i = compptr->DCT_h_scaled_size; switch (cinfo->lim_Se) { case (1*1-1): entropy->coef_limit[blkn] = 1; break; case (2*2-1): if (ci <= 0 || ci > 2) ci = 2; if (i <= 0 || i > 2) i = 2; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order2[ci - 1][i - 1]; break; case (3*3-1): if (ci <= 0 || ci > 3) ci = 3; if (i <= 0 || i > 3) i = 3; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order3[ci - 1][i - 1]; break; case (4*4-1): if (ci <= 0 || ci > 4) ci = 4; if (i <= 0 || i > 4) i = 4; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order4[ci - 1][i - 1]; break; case (5*5-1): if (ci <= 0 || ci > 5) ci = 5; if (i <= 0 || i > 5) i = 5; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order5[ci - 1][i - 1]; break; case (6*6-1): if (ci <= 0 || ci > 6) ci = 6; if (i <= 0 || i > 6) i = 6; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order6[ci - 1][i - 1]; break; case (7*7-1): if (ci <= 0 || ci > 7) ci = 7; if (i <= 0 || i > 7) i = 7; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order7[ci - 1][i - 1]; break; default: if (ci <= 0 || ci > 8) ci = 8; if (i <= 0 || i > 8) i = 8; entropy->coef_limit[blkn] = 1 + jpeg_zigzag_order[ci - 1][i - 1]; break; } } else { entropy->coef_limit[blkn] = 0; } } } /* Initialize bitread state variables */ entropy->bitstate.bits_left = 0; entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */ entropy->insufficient_data = FALSE; /* Initialize restart counter */ entropy->restarts_to_go = cinfo->restart_interval; } /* * Module initialization routine for Huffman entropy decoding. */ GLOBAL(void) jinit_huff_decoder (j_decompress_ptr cinfo) { huff_entropy_ptr entropy; int i; entropy = (huff_entropy_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(huff_entropy_decoder)); cinfo->entropy = (struct jpeg_entropy_decoder *) entropy; entropy->pub.start_pass = start_pass_huff_decoder; if (cinfo->progressive_mode) { /* Create progression status table */ int *coef_bit_ptr, ci; cinfo->coef_bits = (int (*)[DCTSIZE2]) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->num_components*DCTSIZE2*SIZEOF(int)); coef_bit_ptr = & cinfo->coef_bits[0][0]; for (ci = 0; ci < cinfo->num_components; ci++) for (i = 0; i < DCTSIZE2; i++) *coef_bit_ptr++ = -1; /* Mark derived tables unallocated */ for (i = 0; i < NUM_HUFF_TBLS; i++) { entropy->derived_tbls[i] = NULL; } } else { /* Mark tables unallocated */ for (i = 0; i < NUM_HUFF_TBLS; i++) { entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL; } } } jpeg-8d1/makejsln.v100000644000175000017500000000124711367067464013201 0ustar billbill Microsoft Visual Studio Solution File, Format Version 11.00 # Visual C++ Express 2010 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "jpeg", "jpeg.vcxproj", "{019DBD2A-273D-4BA4-BF86-B5EFE2ED76B1}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Release|Win32 = Release|Win32 EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution {019DBD2A-273D-4BA4-BF86-B5EFE2ED76B1}.Release|Win32.ActiveCfg = Release|Win32 {019DBD2A-273D-4BA4-BF86-B5EFE2ED76B1}.Release|Win32.Build.0 = Release|Win32 EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection EndGlobal jpeg-8d1/jmemsys.h0000644000175000017500000002004606371152334012671 0ustar billbill/* * jmemsys.h * * Copyright (C) 1992-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This include file defines the interface between the system-independent * and system-dependent portions of the JPEG memory manager. No other * modules need include it. (The system-independent portion is jmemmgr.c; * there are several different versions of the system-dependent portion.) * * This file works as-is for the system-dependent memory managers supplied * in the IJG distribution. You may need to modify it if you write a * custom memory manager. If system-dependent changes are needed in * this file, the best method is to #ifdef them based on a configuration * symbol supplied in jconfig.h, as we have done with USE_MSDOS_MEMMGR * and USE_MAC_MEMMGR. */ /* Short forms of external names for systems with brain-damaged linkers. */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jpeg_get_small jGetSmall #define jpeg_free_small jFreeSmall #define jpeg_get_large jGetLarge #define jpeg_free_large jFreeLarge #define jpeg_mem_available jMemAvail #define jpeg_open_backing_store jOpenBackStore #define jpeg_mem_init jMemInit #define jpeg_mem_term jMemTerm #endif /* NEED_SHORT_EXTERNAL_NAMES */ /* * These two functions are used to allocate and release small chunks of * memory. (Typically the total amount requested through jpeg_get_small is * no more than 20K or so; this will be requested in chunks of a few K each.) * Behavior should be the same as for the standard library functions malloc * and free; in particular, jpeg_get_small must return NULL on failure. * On most systems, these ARE malloc and free. jpeg_free_small is passed the * size of the object being freed, just in case it's needed. * On an 80x86 machine using small-data memory model, these manage near heap. */ EXTERN(void *) jpeg_get_small JPP((j_common_ptr cinfo, size_t sizeofobject)); EXTERN(void) jpeg_free_small JPP((j_common_ptr cinfo, void * object, size_t sizeofobject)); /* * These two functions are used to allocate and release large chunks of * memory (up to the total free space designated by jpeg_mem_available). * The interface is the same as above, except that on an 80x86 machine, * far pointers are used. On most other machines these are identical to * the jpeg_get/free_small routines; but we keep them separate anyway, * in case a different allocation strategy is desirable for large chunks. */ EXTERN(void FAR *) jpeg_get_large JPP((j_common_ptr cinfo, size_t sizeofobject)); EXTERN(void) jpeg_free_large JPP((j_common_ptr cinfo, void FAR * object, size_t sizeofobject)); /* * The macro MAX_ALLOC_CHUNK designates the maximum number of bytes that may * be requested in a single call to jpeg_get_large (and jpeg_get_small for that * matter, but that case should never come into play). This macro is needed * to model the 64Kb-segment-size limit of far addressing on 80x86 machines. * On those machines, we expect that jconfig.h will provide a proper value. * On machines with 32-bit flat address spaces, any large constant may be used. * * NB: jmemmgr.c expects that MAX_ALLOC_CHUNK will be representable as type * size_t and will be a multiple of sizeof(align_type). */ #ifndef MAX_ALLOC_CHUNK /* may be overridden in jconfig.h */ #define MAX_ALLOC_CHUNK 1000000000L #endif /* * This routine computes the total space still available for allocation by * jpeg_get_large. If more space than this is needed, backing store will be * used. NOTE: any memory already allocated must not be counted. * * There is a minimum space requirement, corresponding to the minimum * feasible buffer sizes; jmemmgr.c will request that much space even if * jpeg_mem_available returns zero. The maximum space needed, enough to hold * all working storage in memory, is also passed in case it is useful. * Finally, the total space already allocated is passed. If no better * method is available, cinfo->mem->max_memory_to_use - already_allocated * is often a suitable calculation. * * It is OK for jpeg_mem_available to underestimate the space available * (that'll just lead to more backing-store access than is really necessary). * However, an overestimate will lead to failure. Hence it's wise to subtract * a slop factor from the true available space. 5% should be enough. * * On machines with lots of virtual memory, any large constant may be returned. * Conversely, zero may be returned to always use the minimum amount of memory. */ EXTERN(long) jpeg_mem_available JPP((j_common_ptr cinfo, long min_bytes_needed, long max_bytes_needed, long already_allocated)); /* * This structure holds whatever state is needed to access a single * backing-store object. The read/write/close method pointers are called * by jmemmgr.c to manipulate the backing-store object; all other fields * are private to the system-dependent backing store routines. */ #define TEMP_NAME_LENGTH 64 /* max length of a temporary file's name */ #ifdef USE_MSDOS_MEMMGR /* DOS-specific junk */ typedef unsigned short XMSH; /* type of extended-memory handles */ typedef unsigned short EMSH; /* type of expanded-memory handles */ typedef union { short file_handle; /* DOS file handle if it's a temp file */ XMSH xms_handle; /* handle if it's a chunk of XMS */ EMSH ems_handle; /* handle if it's a chunk of EMS */ } handle_union; #endif /* USE_MSDOS_MEMMGR */ #ifdef USE_MAC_MEMMGR /* Mac-specific junk */ #include #endif /* USE_MAC_MEMMGR */ typedef struct backing_store_struct * backing_store_ptr; typedef struct backing_store_struct { /* Methods for reading/writing/closing this backing-store object */ JMETHOD(void, read_backing_store, (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count)); JMETHOD(void, write_backing_store, (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count)); JMETHOD(void, close_backing_store, (j_common_ptr cinfo, backing_store_ptr info)); /* Private fields for system-dependent backing-store management */ #ifdef USE_MSDOS_MEMMGR /* For the MS-DOS manager (jmemdos.c), we need: */ handle_union handle; /* reference to backing-store storage object */ char temp_name[TEMP_NAME_LENGTH]; /* name if it's a file */ #else #ifdef USE_MAC_MEMMGR /* For the Mac manager (jmemmac.c), we need: */ short temp_file; /* file reference number to temp file */ FSSpec tempSpec; /* the FSSpec for the temp file */ char temp_name[TEMP_NAME_LENGTH]; /* name if it's a file */ #else /* For a typical implementation with temp files, we need: */ FILE * temp_file; /* stdio reference to temp file */ char temp_name[TEMP_NAME_LENGTH]; /* name of temp file */ #endif #endif } backing_store_info; /* * Initial opening of a backing-store object. This must fill in the * read/write/close pointers in the object. The read/write routines * may take an error exit if the specified maximum file size is exceeded. * (If jpeg_mem_available always returns a large value, this routine can * just take an error exit.) */ EXTERN(void) jpeg_open_backing_store JPP((j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed)); /* * These routines take care of any system-dependent initialization and * cleanup required. jpeg_mem_init will be called before anything is * allocated (and, therefore, nothing in cinfo is of use except the error * manager pointer). It should return a suitable default value for * max_memory_to_use; this may subsequently be overridden by the surrounding * application. (Note that max_memory_to_use is only important if * jpeg_mem_available chooses to consult it ... no one else will.) * jpeg_mem_term may assume that all requested memory has been freed and that * all opened backing-store objects have been closed. */ EXTERN(long) jpeg_mem_init JPP((j_common_ptr cinfo)); EXTERN(void) jpeg_mem_term JPP((j_common_ptr cinfo)); jpeg-8d1/example.c0000644000175000017500000004130311161224414012617 0ustar billbill/* * example.c * * This file illustrates how to use the IJG code as a subroutine library * to read or write JPEG image files. You should look at this code in * conjunction with the documentation file libjpeg.txt. * * This code will not do anything useful as-is, but it may be helpful as a * skeleton for constructing routines that call the JPEG library. * * We present these routines in the same coding style used in the JPEG code * (ANSI function definitions, etc); but you are of course free to code your * routines in a different style if you prefer. */ #include /* * Include file for users of JPEG library. * You will need to have included system headers that define at least * the typedefs FILE and size_t before you can include jpeglib.h. * (stdio.h is sufficient on ANSI-conforming systems.) * You may also wish to include "jerror.h". */ #include "jpeglib.h" /* * is used for the optional error recovery mechanism shown in * the second part of the example. */ #include /******************** JPEG COMPRESSION SAMPLE INTERFACE *******************/ /* This half of the example shows how to feed data into the JPEG compressor. * We present a minimal version that does not worry about refinements such * as error recovery (the JPEG code will just exit() if it gets an error). */ /* * IMAGE DATA FORMATS: * * The standard input image format is a rectangular array of pixels, with * each pixel having the same number of "component" values (color channels). * Each pixel row is an array of JSAMPLEs (which typically are unsigned chars). * If you are working with color data, then the color values for each pixel * must be adjacent in the row; for example, R,G,B,R,G,B,R,G,B,... for 24-bit * RGB color. * * For this example, we'll assume that this data structure matches the way * our application has stored the image in memory, so we can just pass a * pointer to our image buffer. In particular, let's say that the image is * RGB color and is described by: */ extern JSAMPLE * image_buffer; /* Points to large array of R,G,B-order data */ extern int image_height; /* Number of rows in image */ extern int image_width; /* Number of columns in image */ /* * Sample routine for JPEG compression. We assume that the target file name * and a compression quality factor are passed in. */ GLOBAL(void) write_JPEG_file (char * filename, int quality) { /* This struct contains the JPEG compression parameters and pointers to * working space (which is allocated as needed by the JPEG library). * It is possible to have several such structures, representing multiple * compression/decompression processes, in existence at once. We refer * to any one struct (and its associated working data) as a "JPEG object". */ struct jpeg_compress_struct cinfo; /* This struct represents a JPEG error handler. It is declared separately * because applications often want to supply a specialized error handler * (see the second half of this file for an example). But here we just * take the easy way out and use the standard error handler, which will * print a message on stderr and call exit() if compression fails. * Note that this struct must live as long as the main JPEG parameter * struct, to avoid dangling-pointer problems. */ struct jpeg_error_mgr jerr; /* More stuff */ FILE * outfile; /* target file */ JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */ int row_stride; /* physical row width in image buffer */ /* Step 1: allocate and initialize JPEG compression object */ /* We have to set up the error handler first, in case the initialization * step fails. (Unlikely, but it could happen if you are out of memory.) * This routine fills in the contents of struct jerr, and returns jerr's * address which we place into the link field in cinfo. */ cinfo.err = jpeg_std_error(&jerr); /* Now we can initialize the JPEG compression object. */ jpeg_create_compress(&cinfo); /* Step 2: specify data destination (eg, a file) */ /* Note: steps 2 and 3 can be done in either order. */ /* Here we use the library-supplied code to send compressed data to a * stdio stream. You can also write your own code to do something else. * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that * requires it in order to write binary files. */ if ((outfile = fopen(filename, "wb")) == NULL) { fprintf(stderr, "can't open %s\n", filename); exit(1); } jpeg_stdio_dest(&cinfo, outfile); /* Step 3: set parameters for compression */ /* First we supply a description of the input image. * Four fields of the cinfo struct must be filled in: */ cinfo.image_width = image_width; /* image width and height, in pixels */ cinfo.image_height = image_height; cinfo.input_components = 3; /* # of color components per pixel */ cinfo.in_color_space = JCS_RGB; /* colorspace of input image */ /* Now use the library's routine to set default compression parameters. * (You must set at least cinfo.in_color_space before calling this, * since the defaults depend on the source color space.) */ jpeg_set_defaults(&cinfo); /* Now you can set any non-default parameters you wish to. * Here we just illustrate the use of quality (quantization table) scaling: */ jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */); /* Step 4: Start compressor */ /* TRUE ensures that we will write a complete interchange-JPEG file. * Pass TRUE unless you are very sure of what you're doing. */ jpeg_start_compress(&cinfo, TRUE); /* Step 5: while (scan lines remain to be written) */ /* jpeg_write_scanlines(...); */ /* Here we use the library's state variable cinfo.next_scanline as the * loop counter, so that we don't have to keep track ourselves. * To keep things simple, we pass one scanline per call; you can pass * more if you wish, though. */ row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */ while (cinfo.next_scanline < cinfo.image_height) { /* jpeg_write_scanlines expects an array of pointers to scanlines. * Here the array is only one element long, but you could pass * more than one scanline at a time if that's more convenient. */ row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride]; (void) jpeg_write_scanlines(&cinfo, row_pointer, 1); } /* Step 6: Finish compression */ jpeg_finish_compress(&cinfo); /* After finish_compress, we can close the output file. */ fclose(outfile); /* Step 7: release JPEG compression object */ /* This is an important step since it will release a good deal of memory. */ jpeg_destroy_compress(&cinfo); /* And we're done! */ } /* * SOME FINE POINTS: * * In the above loop, we ignored the return value of jpeg_write_scanlines, * which is the number of scanlines actually written. We could get away * with this because we were only relying on the value of cinfo.next_scanline, * which will be incremented correctly. If you maintain additional loop * variables then you should be careful to increment them properly. * Actually, for output to a stdio stream you needn't worry, because * then jpeg_write_scanlines will write all the lines passed (or else exit * with a fatal error). Partial writes can only occur if you use a data * destination module that can demand suspension of the compressor. * (If you don't know what that's for, you don't need it.) * * If the compressor requires full-image buffers (for entropy-coding * optimization or a multi-scan JPEG file), it will create temporary * files for anything that doesn't fit within the maximum-memory setting. * (Note that temp files are NOT needed if you use the default parameters.) * On some systems you may need to set up a signal handler to ensure that * temporary files are deleted if the program is interrupted. See libjpeg.txt. * * Scanlines MUST be supplied in top-to-bottom order if you want your JPEG * files to be compatible with everyone else's. If you cannot readily read * your data in that order, you'll need an intermediate array to hold the * image. See rdtarga.c or rdbmp.c for examples of handling bottom-to-top * source data using the JPEG code's internal virtual-array mechanisms. */ /******************** JPEG DECOMPRESSION SAMPLE INTERFACE *******************/ /* This half of the example shows how to read data from the JPEG decompressor. * It's a bit more refined than the above, in that we show: * (a) how to modify the JPEG library's standard error-reporting behavior; * (b) how to allocate workspace using the library's memory manager. * * Just to make this example a little different from the first one, we'll * assume that we do not intend to put the whole image into an in-memory * buffer, but to send it line-by-line someplace else. We need a one- * scanline-high JSAMPLE array as a work buffer, and we will let the JPEG * memory manager allocate it for us. This approach is actually quite useful * because we don't need to remember to deallocate the buffer separately: it * will go away automatically when the JPEG object is cleaned up. */ /* * ERROR HANDLING: * * The JPEG library's standard error handler (jerror.c) is divided into * several "methods" which you can override individually. This lets you * adjust the behavior without duplicating a lot of code, which you might * have to update with each future release. * * Our example here shows how to override the "error_exit" method so that * control is returned to the library's caller when a fatal error occurs, * rather than calling exit() as the standard error_exit method does. * * We use C's setjmp/longjmp facility to return control. This means that the * routine which calls the JPEG library must first execute a setjmp() call to * establish the return point. We want the replacement error_exit to do a * longjmp(). But we need to make the setjmp buffer accessible to the * error_exit routine. To do this, we make a private extension of the * standard JPEG error handler object. (If we were using C++, we'd say we * were making a subclass of the regular error handler.) * * Here's the extended error handler struct: */ struct my_error_mgr { struct jpeg_error_mgr pub; /* "public" fields */ jmp_buf setjmp_buffer; /* for return to caller */ }; typedef struct my_error_mgr * my_error_ptr; /* * Here's the routine that will replace the standard error_exit method: */ METHODDEF(void) my_error_exit (j_common_ptr cinfo) { /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */ my_error_ptr myerr = (my_error_ptr) cinfo->err; /* Always display the message. */ /* We could postpone this until after returning, if we chose. */ (*cinfo->err->output_message) (cinfo); /* Return control to the setjmp point */ longjmp(myerr->setjmp_buffer, 1); } /* * Sample routine for JPEG decompression. We assume that the source file name * is passed in. We want to return 1 on success, 0 on error. */ GLOBAL(int) read_JPEG_file (char * filename) { /* This struct contains the JPEG decompression parameters and pointers to * working space (which is allocated as needed by the JPEG library). */ struct jpeg_decompress_struct cinfo; /* We use our private extension JPEG error handler. * Note that this struct must live as long as the main JPEG parameter * struct, to avoid dangling-pointer problems. */ struct my_error_mgr jerr; /* More stuff */ FILE * infile; /* source file */ JSAMPARRAY buffer; /* Output row buffer */ int row_stride; /* physical row width in output buffer */ /* In this example we want to open the input file before doing anything else, * so that the setjmp() error recovery below can assume the file is open. * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that * requires it in order to read binary files. */ if ((infile = fopen(filename, "rb")) == NULL) { fprintf(stderr, "can't open %s\n", filename); return 0; } /* Step 1: allocate and initialize JPEG decompression object */ /* We set up the normal JPEG error routines, then override error_exit. */ cinfo.err = jpeg_std_error(&jerr.pub); jerr.pub.error_exit = my_error_exit; /* Establish the setjmp return context for my_error_exit to use. */ if (setjmp(jerr.setjmp_buffer)) { /* If we get here, the JPEG code has signaled an error. * We need to clean up the JPEG object, close the input file, and return. */ jpeg_destroy_decompress(&cinfo); fclose(infile); return 0; } /* Now we can initialize the JPEG decompression object. */ jpeg_create_decompress(&cinfo); /* Step 2: specify data source (eg, a file) */ jpeg_stdio_src(&cinfo, infile); /* Step 3: read file parameters with jpeg_read_header() */ (void) jpeg_read_header(&cinfo, TRUE); /* We can ignore the return value from jpeg_read_header since * (a) suspension is not possible with the stdio data source, and * (b) we passed TRUE to reject a tables-only JPEG file as an error. * See libjpeg.txt for more info. */ /* Step 4: set parameters for decompression */ /* In this example, we don't need to change any of the defaults set by * jpeg_read_header(), so we do nothing here. */ /* Step 5: Start decompressor */ (void) jpeg_start_decompress(&cinfo); /* We can ignore the return value since suspension is not possible * with the stdio data source. */ /* We may need to do some setup of our own at this point before reading * the data. After jpeg_start_decompress() we have the correct scaled * output image dimensions available, as well as the output colormap * if we asked for color quantization. * In this example, we need to make an output work buffer of the right size. */ /* JSAMPLEs per row in output buffer */ row_stride = cinfo.output_width * cinfo.output_components; /* Make a one-row-high sample array that will go away when done with image */ buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1); /* Step 6: while (scan lines remain to be read) */ /* jpeg_read_scanlines(...); */ /* Here we use the library's state variable cinfo.output_scanline as the * loop counter, so that we don't have to keep track ourselves. */ while (cinfo.output_scanline < cinfo.output_height) { /* jpeg_read_scanlines expects an array of pointers to scanlines. * Here the array is only one element long, but you could ask for * more than one scanline at a time if that's more convenient. */ (void) jpeg_read_scanlines(&cinfo, buffer, 1); /* Assume put_scanline_someplace wants a pointer and sample count. */ put_scanline_someplace(buffer[0], row_stride); } /* Step 7: Finish decompression */ (void) jpeg_finish_decompress(&cinfo); /* We can ignore the return value since suspension is not possible * with the stdio data source. */ /* Step 8: Release JPEG decompression object */ /* This is an important step since it will release a good deal of memory. */ jpeg_destroy_decompress(&cinfo); /* After finish_decompress, we can close the input file. * Here we postpone it until after no more JPEG errors are possible, * so as to simplify the setjmp error logic above. (Actually, I don't * think that jpeg_destroy can do an error exit, but why assume anything...) */ fclose(infile); /* At this point you may want to check to see whether any corrupt-data * warnings occurred (test whether jerr.pub.num_warnings is nonzero). */ /* And we're done! */ return 1; } /* * SOME FINE POINTS: * * In the above code, we ignored the return value of jpeg_read_scanlines, * which is the number of scanlines actually read. We could get away with * this because we asked for only one line at a time and we weren't using * a suspending data source. See libjpeg.txt for more info. * * We cheated a bit by calling alloc_sarray() after jpeg_start_decompress(); * we should have done it beforehand to ensure that the space would be * counted against the JPEG max_memory setting. In some systems the above * code would risk an out-of-memory error. However, in general we don't * know the output image dimensions before jpeg_start_decompress(), unless we * call jpeg_calc_output_dimensions(). See libjpeg.txt for more about this. * * Scanlines are returned in the same order as they appear in the JPEG file, * which is standardly top-to-bottom. If you must emit data bottom-to-top, * you can use one of the virtual arrays provided by the JPEG memory manager * to invert the data. See wrbmp.c for an example. * * As with compression, some operating modes may require temporary files. * On some systems you may need to set up a signal handler to ensure that * temporary files are deleted if the program is interrupted. See libjpeg.txt. */ jpeg-8d1/jidctfst.c0000644000175000017500000003156206457224656013030 0ustar billbill/* * jidctfst.c * * Copyright (C) 1994-1998, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a fast, not so accurate integer implementation of the * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine * must also perform dequantization of the input coefficients. * * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT * on each row (or vice versa, but it's more convenient to emit a row at * a time). Direct algorithms are also available, but they are much more * complex and seem not to be any faster when reduced to code. * * This implementation is based on Arai, Agui, and Nakajima's algorithm for * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in * Japanese, but the algorithm is described in the Pennebaker & Mitchell * JPEG textbook (see REFERENCES section in file README). The following code * is based directly on figure 4-8 in P&M. * While an 8-point DCT cannot be done in less than 11 multiplies, it is * possible to arrange the computation so that many of the multiplies are * simple scalings of the final outputs. These multiplies can then be * folded into the multiplications or divisions by the JPEG quantization * table entries. The AA&N method leaves only 5 multiplies and 29 adds * to be done in the DCT itself. * The primary disadvantage of this method is that with fixed-point math, * accuracy is lost due to imprecise representation of the scaled * quantization values. The smaller the quantization table entry, the less * precise the scaled value, so this implementation does worse with high- * quality-setting files than with low-quality ones. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ #ifdef DCT_IFAST_SUPPORTED /* * This module is specialized to the case DCTSIZE = 8. */ #if DCTSIZE != 8 Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ #endif /* Scaling decisions are generally the same as in the LL&M algorithm; * see jidctint.c for more details. However, we choose to descale * (right shift) multiplication products as soon as they are formed, * rather than carrying additional fractional bits into subsequent additions. * This compromises accuracy slightly, but it lets us save a few shifts. * More importantly, 16-bit arithmetic is then adequate (for 8-bit samples) * everywhere except in the multiplications proper; this saves a good deal * of work on 16-bit-int machines. * * The dequantized coefficients are not integers because the AA&N scaling * factors have been incorporated. We represent them scaled up by PASS1_BITS, * so that the first and second IDCT rounds have the same input scaling. * For 8-bit JSAMPLEs, we choose IFAST_SCALE_BITS = PASS1_BITS so as to * avoid a descaling shift; this compromises accuracy rather drastically * for small quantization table entries, but it saves a lot of shifts. * For 12-bit JSAMPLEs, there's no hope of using 16x16 multiplies anyway, * so we use a much larger scaling factor to preserve accuracy. * * A final compromise is to represent the multiplicative constants to only * 8 fractional bits, rather than 13. This saves some shifting work on some * machines, and may also reduce the cost of multiplication (since there * are fewer one-bits in the constants). */ #if BITS_IN_JSAMPLE == 8 #define CONST_BITS 8 #define PASS1_BITS 2 #else #define CONST_BITS 8 #define PASS1_BITS 1 /* lose a little precision to avoid overflow */ #endif /* Some C compilers fail to reduce "FIX(constant)" at compile time, thus * causing a lot of useless floating-point operations at run time. * To get around this we use the following pre-calculated constants. * If you change CONST_BITS you may want to add appropriate values. * (With a reasonable C compiler, you can just rely on the FIX() macro...) */ #if CONST_BITS == 8 #define FIX_1_082392200 ((INT32) 277) /* FIX(1.082392200) */ #define FIX_1_414213562 ((INT32) 362) /* FIX(1.414213562) */ #define FIX_1_847759065 ((INT32) 473) /* FIX(1.847759065) */ #define FIX_2_613125930 ((INT32) 669) /* FIX(2.613125930) */ #else #define FIX_1_082392200 FIX(1.082392200) #define FIX_1_414213562 FIX(1.414213562) #define FIX_1_847759065 FIX(1.847759065) #define FIX_2_613125930 FIX(2.613125930) #endif /* We can gain a little more speed, with a further compromise in accuracy, * by omitting the addition in a descaling shift. This yields an incorrectly * rounded result half the time... */ #ifndef USE_ACCURATE_ROUNDING #undef DESCALE #define DESCALE(x,n) RIGHT_SHIFT(x, n) #endif /* Multiply a DCTELEM variable by an INT32 constant, and immediately * descale to yield a DCTELEM result. */ #define MULTIPLY(var,const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS)) /* Dequantize a coefficient by multiplying it by the multiplier-table * entry; produce a DCTELEM result. For 8-bit data a 16x16->16 * multiplication will do. For 12-bit data, the multiplier table is * declared INT32, so a 32-bit multiply will be used. */ #if BITS_IN_JSAMPLE == 8 #define DEQUANTIZE(coef,quantval) (((IFAST_MULT_TYPE) (coef)) * (quantval)) #else #define DEQUANTIZE(coef,quantval) \ DESCALE((coef)*(quantval), IFAST_SCALE_BITS-PASS1_BITS) #endif /* Like DESCALE, but applies to a DCTELEM and produces an int. * We assume that int right shift is unsigned if INT32 right shift is. */ #ifdef RIGHT_SHIFT_IS_UNSIGNED #define ISHIFT_TEMPS DCTELEM ishift_temp; #if BITS_IN_JSAMPLE == 8 #define DCTELEMBITS 16 /* DCTELEM may be 16 or 32 bits */ #else #define DCTELEMBITS 32 /* DCTELEM must be 32 bits */ #endif #define IRIGHT_SHIFT(x,shft) \ ((ishift_temp = (x)) < 0 ? \ (ishift_temp >> (shft)) | ((~((DCTELEM) 0)) << (DCTELEMBITS-(shft))) : \ (ishift_temp >> (shft))) #else #define ISHIFT_TEMPS #define IRIGHT_SHIFT(x,shft) ((x) >> (shft)) #endif #ifdef USE_ACCURATE_ROUNDING #define IDESCALE(x,n) ((int) IRIGHT_SHIFT((x) + (1 << ((n)-1)), n)) #else #define IDESCALE(x,n) ((int) IRIGHT_SHIFT(x, n)) #endif /* * Perform dequantization and inverse DCT on one block of coefficients. */ GLOBAL(void) jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { DCTELEM tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; DCTELEM tmp10, tmp11, tmp12, tmp13; DCTELEM z5, z10, z11, z12, z13; JCOEFPTR inptr; IFAST_MULT_TYPE * quantptr; int * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = IDCT_range_limit(cinfo); int ctr; int workspace[DCTSIZE2]; /* buffers data between passes */ SHIFT_TEMPS /* for DESCALE */ ISHIFT_TEMPS /* for IDESCALE */ /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (IFAST_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = DCTSIZE; ctr > 0; ctr--) { /* Due to quantization, we will usually find that many of the input * coefficients are zero, especially the AC terms. We can exploit this * by short-circuiting the IDCT calculation for any column in which all * the AC terms are zero. In that case each output is equal to the * DC coefficient (with scale factor as needed). * With typical images and quantization tables, half or more of the * column DCT calculations can be simplified this way. */ if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) { /* AC terms all zero */ int dcval = (int) DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); wsptr[DCTSIZE*0] = dcval; wsptr[DCTSIZE*1] = dcval; wsptr[DCTSIZE*2] = dcval; wsptr[DCTSIZE*3] = dcval; wsptr[DCTSIZE*4] = dcval; wsptr[DCTSIZE*5] = dcval; wsptr[DCTSIZE*6] = dcval; wsptr[DCTSIZE*7] = dcval; inptr++; /* advance pointers to next column */ quantptr++; wsptr++; continue; } /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp10 = tmp0 + tmp2; /* phase 3 */ tmp11 = tmp0 - tmp2; tmp13 = tmp1 + tmp3; /* phases 5-3 */ tmp12 = MULTIPLY(tmp1 - tmp3, FIX_1_414213562) - tmp13; /* 2*c4 */ tmp0 = tmp10 + tmp13; /* phase 2 */ tmp3 = tmp10 - tmp13; tmp1 = tmp11 + tmp12; tmp2 = tmp11 - tmp12; /* Odd part */ tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); z13 = tmp6 + tmp5; /* phase 6 */ z10 = tmp6 - tmp5; z11 = tmp4 + tmp7; z12 = tmp4 - tmp7; tmp7 = z11 + z13; /* phase 5 */ tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); /* 2*c4 */ z5 = MULTIPLY(z10 + z12, FIX_1_847759065); /* 2*c2 */ tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; /* 2*(c2-c6) */ tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; /* -2*(c2+c6) */ tmp6 = tmp12 - tmp7; /* phase 2 */ tmp5 = tmp11 - tmp6; tmp4 = tmp10 + tmp5; wsptr[DCTSIZE*0] = (int) (tmp0 + tmp7); wsptr[DCTSIZE*7] = (int) (tmp0 - tmp7); wsptr[DCTSIZE*1] = (int) (tmp1 + tmp6); wsptr[DCTSIZE*6] = (int) (tmp1 - tmp6); wsptr[DCTSIZE*2] = (int) (tmp2 + tmp5); wsptr[DCTSIZE*5] = (int) (tmp2 - tmp5); wsptr[DCTSIZE*4] = (int) (tmp3 + tmp4); wsptr[DCTSIZE*3] = (int) (tmp3 - tmp4); inptr++; /* advance pointers to next column */ quantptr++; wsptr++; } /* Pass 2: process rows from work array, store into output array. */ /* Note that we must descale the results by a factor of 8 == 2**3, */ /* and also undo the PASS1_BITS scaling. */ wsptr = workspace; for (ctr = 0; ctr < DCTSIZE; ctr++) { outptr = output_buf[ctr] + output_col; /* Rows of zeroes can be exploited in the same way as we did with columns. * However, the column calculation has created many nonzero AC terms, so * the simplification applies less often (typically 5% to 10% of the time). * On machines with very fast multiplication, it's possible that the * test takes more time than it's worth. In that case this section * may be commented out. */ #ifndef NO_ZERO_ROW_TEST if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 && wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) { /* AC terms all zero */ JSAMPLE dcval = range_limit[IDESCALE(wsptr[0], PASS1_BITS+3) & RANGE_MASK]; outptr[0] = dcval; outptr[1] = dcval; outptr[2] = dcval; outptr[3] = dcval; outptr[4] = dcval; outptr[5] = dcval; outptr[6] = dcval; outptr[7] = dcval; wsptr += DCTSIZE; /* advance pointer to next row */ continue; } #endif /* Even part */ tmp10 = ((DCTELEM) wsptr[0] + (DCTELEM) wsptr[4]); tmp11 = ((DCTELEM) wsptr[0] - (DCTELEM) wsptr[4]); tmp13 = ((DCTELEM) wsptr[2] + (DCTELEM) wsptr[6]); tmp12 = MULTIPLY((DCTELEM) wsptr[2] - (DCTELEM) wsptr[6], FIX_1_414213562) - tmp13; tmp0 = tmp10 + tmp13; tmp3 = tmp10 - tmp13; tmp1 = tmp11 + tmp12; tmp2 = tmp11 - tmp12; /* Odd part */ z13 = (DCTELEM) wsptr[5] + (DCTELEM) wsptr[3]; z10 = (DCTELEM) wsptr[5] - (DCTELEM) wsptr[3]; z11 = (DCTELEM) wsptr[1] + (DCTELEM) wsptr[7]; z12 = (DCTELEM) wsptr[1] - (DCTELEM) wsptr[7]; tmp7 = z11 + z13; /* phase 5 */ tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); /* 2*c4 */ z5 = MULTIPLY(z10 + z12, FIX_1_847759065); /* 2*c2 */ tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; /* 2*(c2-c6) */ tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; /* -2*(c2+c6) */ tmp6 = tmp12 - tmp7; /* phase 2 */ tmp5 = tmp11 - tmp6; tmp4 = tmp10 + tmp5; /* Final output stage: scale down by a factor of 8 and range-limit */ outptr[0] = range_limit[IDESCALE(tmp0 + tmp7, PASS1_BITS+3) & RANGE_MASK]; outptr[7] = range_limit[IDESCALE(tmp0 - tmp7, PASS1_BITS+3) & RANGE_MASK]; outptr[1] = range_limit[IDESCALE(tmp1 + tmp6, PASS1_BITS+3) & RANGE_MASK]; outptr[6] = range_limit[IDESCALE(tmp1 - tmp6, PASS1_BITS+3) & RANGE_MASK]; outptr[2] = range_limit[IDESCALE(tmp2 + tmp5, PASS1_BITS+3) & RANGE_MASK]; outptr[5] = range_limit[IDESCALE(tmp2 - tmp5, PASS1_BITS+3) & RANGE_MASK]; outptr[4] = range_limit[IDESCALE(tmp3 + tmp4, PASS1_BITS+3) & RANGE_MASK]; outptr[3] = range_limit[IDESCALE(tmp3 - tmp4, PASS1_BITS+3) & RANGE_MASK]; wsptr += DCTSIZE; /* advance pointer to next row */ } } #endif /* DCT_IFAST_SUPPORTED */ jpeg-8d1/makefile.vms0000644000175000017500000001050511167161054013332 0ustar billbill$! Makefile for Independent JPEG Group's software $! $! This is a command procedure for Digital VMS systems that do not have MMS. $! It builds the JPEG software by brute force, recompiling everything whether $! or not it is necessary. It then runs the basic self-test. $! Thanks to Rick Dyson (dyson@iowasp.physics.uiowa.edu) $! and Tim Bell (tbell@netcom.com) for their help. $! $! Read installation instructions before running this!! $! $ If F$Mode () .eqs. "INTERACTIVE" $ Then $ VERIFY = F$Verify (0) $ Else $ VERIFY = F$Verify (1) $ EndIf $ On Control_Y Then GoTo End $ On Error Then GoTo End $ $ If F$GetSyi ("HW_MODEL") .gt. 1023 $ Then $ OPT = "" $ Else $ OPT = ",Sys$Disk:[]makvms.opt/Option" $ EndIf $ $ DoCompile := CC /NoDebug /Optimize /NoList $! $ DoCompile jaricom.c $ DoCompile jcapimin.c $ DoCompile jcapistd.c $ DoCompile jcarith.c $ DoCompile jctrans.c $ DoCompile jcparam.c $ DoCompile jdatadst.c $ DoCompile jcinit.c $ DoCompile jcmaster.c $ DoCompile jcmarker.c $ DoCompile jcmainct.c $ DoCompile jcprepct.c $ DoCompile jccoefct.c $ DoCompile jccolor.c $ DoCompile jcsample.c $ DoCompile jchuff.c $ DoCompile jcdctmgr.c $ DoCompile jfdctfst.c $ DoCompile jfdctflt.c $ DoCompile jfdctint.c $ DoCompile jdapimin.c $ DoCompile jdapistd.c $ DoCompile jdarith.c $ DoCompile jdtrans.c $ DoCompile jdatasrc.c $ DoCompile jdmaster.c $ DoCompile jdinput.c $ DoCompile jdmarker.c $ DoCompile jdhuff.c $ DoCompile jdmainct.c $ DoCompile jdcoefct.c $ DoCompile jdpostct.c $ DoCompile jddctmgr.c $ DoCompile jidctfst.c $ DoCompile jidctflt.c $ DoCompile jidctint.c $ DoCompile jdsample.c $ DoCompile jdcolor.c $ DoCompile jquant1.c $ DoCompile jquant2.c $ DoCompile jdmerge.c $ DoCompile jcomapi.c $ DoCompile jutils.c $ DoCompile jerror.c $ DoCompile jmemmgr.c $ DoCompile jmemnobs.c $! $ Library /Create libjpeg.olb jaricom.obj,jcapimin.obj,jcapistd.obj, - jcarith.obj,jctrans.obj,jcparam.obj,jdatadst.obj,jcinit.obj, - jcmaster.obj,jcmarker.obj,jcmainct.obj,jcprepct.obj,jccoefct.obj, - jccolor.obj,jcsample.obj,jchuff.obj,jcdctmgr.obj,jfdctfst.obj, - jfdctflt.obj,jfdctint.obj,jdapimin.obj,jdapistd.obj,jdarith.obj, - jdtrans.obj,jdatasrc.obj,jdmaster.obj,jdinput.obj,jdmarker.obj, - jdhuff.obj,jdmainct.obj,jdcoefct.obj,jdpostct.obj,jddctmgr.obj, - jidctfst.obj,jidctflt.obj,jidctint.obj,jdsample.obj,jdcolor.obj, - jquant1.obj,jquant2.obj,jdmerge.obj,jcomapi.obj,jutils.obj, - jerror.obj,jmemmgr.obj,jmemnobs.obj $! $ DoCompile cjpeg.c $ DoCompile rdppm.c $ DoCompile rdgif.c $ DoCompile rdtarga.c $ DoCompile rdrle.c $ DoCompile rdbmp.c $ DoCompile rdswitch.c $ DoCompile cdjpeg.c $! $ Link /NoMap /Executable = cjpeg.exe cjpeg.obj,rdppm.obj,rdgif.obj, - rdtarga.obj,rdrle.obj,rdbmp.obj,rdswitch.obj,cdjpeg.obj,libjpeg.olb/Library'OPT' $! $ DoCompile djpeg.c $ DoCompile wrppm.c $ DoCompile wrgif.c $ DoCompile wrtarga.c $ DoCompile wrrle.c $ DoCompile wrbmp.c $ DoCompile rdcolmap.c $ DoCompile cdjpeg.c $! $ Link /NoMap /Executable = djpeg.exe djpeg.obj,wrppm.obj,wrgif.obj, - wrtarga.obj,wrrle.obj,wrbmp.obj,rdcolmap.obj,cdjpeg.obj,libjpeg.olb/Library'OPT' $! $ DoCompile jpegtran.c $ DoCompile rdswitch.c $ DoCompile cdjpeg.c $ DoCompile transupp.c $! $ Link /NoMap /Executable = jpegtran.exe jpegtran.obj,rdswitch.obj, - cdjpeg.obj,transupp.obj,libjpeg.olb/Library'OPT' $! $ DoCompile rdjpgcom.c $ Link /NoMap /Executable = rdjpgcom.exe rdjpgcom.obj'OPT' $! $ DoCompile wrjpgcom.c $ Link /NoMap /Executable = wrjpgcom.exe wrjpgcom.obj'OPT' $! $! Run the self-test $! $ mcr sys$disk:[]djpeg -dct int -ppm -outfile testout.ppm testorig.jpg $ mcr sys$disk:[]djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg $ mcr sys$disk:[]cjpeg -dct int -outfile testout.jpg testimg.ppm $ mcr sys$disk:[]djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg $ mcr sys$disk:[]cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm $ mcr sys$disk:[]jpegtran -outfile testoutt.jpg testprog.jpg $ Backup /Compare/Log testimg.ppm testout.ppm $ Backup /Compare/Log testimg.bmp testout.bmp $ Backup /Compare/Log testimg.jpg testout.jpg $ Backup /Compare/Log testimg.ppm testoutp.ppm $ Backup /Compare/Log testimgp.jpg testoutp.jpg $ Backup /Compare/Log testorig.jpg testoutt.jpg $! $End: $ If Verify Then Set Verify $ Exit jpeg-8d1/cderror.h0000644000175000017500000001232311245765410012642 0ustar billbill/* * cderror.h * * Copyright (C) 1994-1997, Thomas G. Lane. * Modified 2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file defines the error and message codes for the cjpeg/djpeg * applications. These strings are not needed as part of the JPEG library * proper. * Edit this file to add new codes, or to translate the message strings to * some other language. */ /* * To define the enum list of message codes, include this file without * defining macro JMESSAGE. To create a message string table, include it * again with a suitable JMESSAGE definition (see jerror.c for an example). */ #ifndef JMESSAGE #ifndef CDERROR_H #define CDERROR_H /* First time through, define the enum list */ #define JMAKE_ENUM_LIST #else /* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */ #define JMESSAGE(code,string) #endif /* CDERROR_H */ #endif /* JMESSAGE */ #ifdef JMAKE_ENUM_LIST typedef enum { #define JMESSAGE(code,string) code , #endif /* JMAKE_ENUM_LIST */ JMESSAGE(JMSG_FIRSTADDONCODE=1000, NULL) /* Must be first entry! */ #ifdef BMP_SUPPORTED JMESSAGE(JERR_BMP_BADCMAP, "Unsupported BMP colormap format") JMESSAGE(JERR_BMP_BADDEPTH, "Only 8- and 24-bit BMP files are supported") JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length") JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1") JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB") JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported") JMESSAGE(JERR_BMP_EMPTY, "Empty BMP image") JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM") JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image") JMESSAGE(JTRC_BMP_MAPPED, "%ux%u 8-bit colormapped BMP image") JMESSAGE(JTRC_BMP_OS2, "%ux%u 24-bit OS2 BMP image") JMESSAGE(JTRC_BMP_OS2_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image") #endif /* BMP_SUPPORTED */ #ifdef GIF_SUPPORTED JMESSAGE(JERR_GIF_BUG, "GIF output got confused") JMESSAGE(JERR_GIF_CODESIZE, "Bogus GIF codesize %d") JMESSAGE(JERR_GIF_COLORSPACE, "GIF output must be grayscale or RGB") JMESSAGE(JERR_GIF_IMAGENOTFOUND, "Too few images in GIF file") JMESSAGE(JERR_GIF_NOT, "Not a GIF file") JMESSAGE(JTRC_GIF, "%ux%ux%d GIF image") JMESSAGE(JTRC_GIF_BADVERSION, "Warning: unexpected GIF version number '%c%c%c'") JMESSAGE(JTRC_GIF_EXTENSION, "Ignoring GIF extension block of type 0x%02x") JMESSAGE(JTRC_GIF_NONSQUARE, "Caution: nonsquare pixels in input") JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file") JMESSAGE(JWRN_GIF_CHAR, "Bogus char 0x%02x in GIF file, ignoring") JMESSAGE(JWRN_GIF_ENDCODE, "Premature end of GIF image") JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits") #endif /* GIF_SUPPORTED */ #ifdef PPM_SUPPORTED JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB") JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file") JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file") JMESSAGE(JTRC_PGM, "%ux%u PGM image") JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image") JMESSAGE(JTRC_PPM, "%ux%u PPM image") JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image") #endif /* PPM_SUPPORTED */ #ifdef RLE_SUPPORTED JMESSAGE(JERR_RLE_BADERROR, "Bogus error code from RLE library") JMESSAGE(JERR_RLE_COLORSPACE, "RLE output must be grayscale or RGB") JMESSAGE(JERR_RLE_DIMENSIONS, "Image dimensions (%ux%u) too large for RLE") JMESSAGE(JERR_RLE_EMPTY, "Empty RLE file") JMESSAGE(JERR_RLE_EOF, "Premature EOF in RLE header") JMESSAGE(JERR_RLE_MEM, "Insufficient memory for RLE header") JMESSAGE(JERR_RLE_NOT, "Not an RLE file") JMESSAGE(JERR_RLE_TOOMANYCHANNELS, "Cannot handle %d output channels for RLE") JMESSAGE(JERR_RLE_UNSUPPORTED, "Cannot handle this RLE setup") JMESSAGE(JTRC_RLE, "%ux%u full-color RLE file") JMESSAGE(JTRC_RLE_FULLMAP, "%ux%u full-color RLE file with map of length %d") JMESSAGE(JTRC_RLE_GRAY, "%ux%u grayscale RLE file") JMESSAGE(JTRC_RLE_MAPGRAY, "%ux%u grayscale RLE file with map of length %d") JMESSAGE(JTRC_RLE_MAPPED, "%ux%u colormapped RLE file with map of length %d") #endif /* RLE_SUPPORTED */ #ifdef TARGA_SUPPORTED JMESSAGE(JERR_TGA_BADCMAP, "Unsupported Targa colormap format") JMESSAGE(JERR_TGA_BADPARMS, "Invalid or unsupported Targa file") JMESSAGE(JERR_TGA_COLORSPACE, "Targa output must be grayscale or RGB") JMESSAGE(JTRC_TGA, "%ux%u RGB Targa image") JMESSAGE(JTRC_TGA_GRAY, "%ux%u grayscale Targa image") JMESSAGE(JTRC_TGA_MAPPED, "%ux%u colormapped Targa image") #else JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled") #endif /* TARGA_SUPPORTED */ JMESSAGE(JERR_BAD_CMAP_FILE, "Color map file is invalid or of unsupported format") JMESSAGE(JERR_TOO_MANY_COLORS, "Output file format cannot handle %d colormap entries") JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed") #ifdef TARGA_SUPPORTED JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format --- perhaps you need -targa") #else JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format") #endif JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format") #ifdef JMAKE_ENUM_LIST JMSG_LASTADDONCODE } ADDON_MESSAGE_CODE; #undef JMAKE_ENUM_LIST #endif /* JMAKE_ENUM_LIST */ /* Zap JMESSAGE macro so that future re-inclusions do nothing by default */ #undef JMESSAGE jpeg-8d1/djpeg.c0000644000175000017500000004566011162241426012272 0ustar billbill/* * djpeg.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a command-line user interface for the JPEG decompressor. * It should work on any system with Unix- or MS-DOS-style command lines. * * Two different command line styles are permitted, depending on the * compile-time switch TWO_FILE_COMMANDLINE: * djpeg [options] inputfile outputfile * djpeg [options] [inputfile] * In the second style, output is always to standard output, which you'd * normally redirect to a file or pipe to some other program. Input is * either from a named file or from standard input (typically redirected). * The second style is convenient on Unix but is unhelpful on systems that * don't support pipes. Also, you MUST use the first style if your system * doesn't do binary I/O to stdin/stdout. * To simplify script writing, the "-outfile" switch is provided. The syntax * djpeg [options] -outfile outputfile inputfile * works regardless of which command line style is used. */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #include "jversion.h" /* for version message */ #include /* to declare isprint() */ #ifdef USE_CCOMMAND /* command-line reader for Macintosh */ #ifdef __MWERKS__ #include /* Metrowerks needs this */ #include /* ... and this */ #endif #ifdef THINK_C #include /* Think declares it here */ #endif #endif /* Create the add-on message string table. */ #define JMESSAGE(code,string) string , static const char * const cdjpeg_message_table[] = { #include "cderror.h" NULL }; /* * This list defines the known output image formats * (not all of which need be supported by a given version). * You can change the default output format by defining DEFAULT_FMT; * indeed, you had better do so if you undefine PPM_SUPPORTED. */ typedef enum { FMT_BMP, /* BMP format (Windows flavor) */ FMT_GIF, /* GIF format */ FMT_OS2, /* BMP format (OS/2 flavor) */ FMT_PPM, /* PPM/PGM (PBMPLUS formats) */ FMT_RLE, /* RLE format */ FMT_TARGA, /* Targa format */ FMT_TIFF /* TIFF format */ } IMAGE_FORMATS; #ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */ #define DEFAULT_FMT FMT_PPM #endif static IMAGE_FORMATS requested_fmt; /* * Argument-parsing code. * The switch parser is designed to be useful with DOS-style command line * syntax, ie, intermixed switches and file names, where only the switches * to the left of a given file name affect processing of that file. * The main program in this file doesn't actually use this capability... */ static const char * progname; /* program name for error messages */ static char * outfilename; /* for -outfile switch */ LOCAL(void) usage (void) /* complain about bad command line */ { fprintf(stderr, "usage: %s [switches] ", progname); #ifdef TWO_FILE_COMMANDLINE fprintf(stderr, "inputfile outputfile\n"); #else fprintf(stderr, "[inputfile]\n"); #endif fprintf(stderr, "Switches (names may be abbreviated):\n"); fprintf(stderr, " -colors N Reduce image to no more than N colors\n"); fprintf(stderr, " -fast Fast, low-quality processing\n"); fprintf(stderr, " -grayscale Force grayscale output\n"); #ifdef IDCT_SCALING_SUPPORTED fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n"); #endif #ifdef BMP_SUPPORTED fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n", (DEFAULT_FMT == FMT_BMP ? " (default)" : "")); #endif #ifdef GIF_SUPPORTED fprintf(stderr, " -gif Select GIF output format%s\n", (DEFAULT_FMT == FMT_GIF ? " (default)" : "")); #endif #ifdef BMP_SUPPORTED fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n", (DEFAULT_FMT == FMT_OS2 ? " (default)" : "")); #endif #ifdef PPM_SUPPORTED fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n", (DEFAULT_FMT == FMT_PPM ? " (default)" : "")); #endif #ifdef RLE_SUPPORTED fprintf(stderr, " -rle Select Utah RLE output format%s\n", (DEFAULT_FMT == FMT_RLE ? " (default)" : "")); #endif #ifdef TARGA_SUPPORTED fprintf(stderr, " -targa Select Targa output format%s\n", (DEFAULT_FMT == FMT_TARGA ? " (default)" : "")); #endif fprintf(stderr, "Switches for advanced users:\n"); #ifdef DCT_ISLOW_SUPPORTED fprintf(stderr, " -dct int Use integer DCT method%s\n", (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); #endif #ifdef DCT_IFAST_SUPPORTED fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); #endif #ifdef DCT_FLOAT_SUPPORTED fprintf(stderr, " -dct float Use floating-point DCT method%s\n", (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); #endif fprintf(stderr, " -dither fs Use F-S dithering (default)\n"); fprintf(stderr, " -dither none Don't use dithering in quantization\n"); fprintf(stderr, " -dither ordered Use ordered dither (medium speed, quality)\n"); #ifdef QUANT_2PASS_SUPPORTED fprintf(stderr, " -map FILE Map to colors used in named image file\n"); #endif fprintf(stderr, " -nosmooth Don't use high-quality upsampling\n"); #ifdef QUANT_1PASS_SUPPORTED fprintf(stderr, " -onepass Use 1-pass quantization (fast, low quality)\n"); #endif fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); fprintf(stderr, " -outfile name Specify name for output file\n"); fprintf(stderr, " -verbose or -debug Emit debug output\n"); exit(EXIT_FAILURE); } LOCAL(int) parse_switches (j_decompress_ptr cinfo, int argc, char **argv, int last_file_arg_seen, boolean for_real) /* Parse optional switches. * Returns argv[] index of first file-name argument (== argc if none). * Any file names with indexes <= last_file_arg_seen are ignored; * they have presumably been processed in a previous iteration. * (Pass 0 for last_file_arg_seen on the first or only iteration.) * for_real is FALSE on the first (dummy) pass; we may skip any expensive * processing. */ { int argn; char * arg; /* Set up default JPEG parameters. */ requested_fmt = DEFAULT_FMT; /* set default output file format */ outfilename = NULL; cinfo->err->trace_level = 0; /* Scan command line options, adjust parameters */ for (argn = 1; argn < argc; argn++) { arg = argv[argn]; if (*arg != '-') { /* Not a switch, must be a file name argument */ if (argn <= last_file_arg_seen) { outfilename = NULL; /* -outfile applies to just one input file */ continue; /* ignore this name if previously processed */ } break; /* else done parsing switches */ } arg++; /* advance past switch marker character */ if (keymatch(arg, "bmp", 1)) { /* BMP output format. */ requested_fmt = FMT_BMP; } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) || keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) { /* Do color quantization. */ int val; if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%d", &val) != 1) usage(); cinfo->desired_number_of_colors = val; cinfo->quantize_colors = TRUE; } else if (keymatch(arg, "dct", 2)) { /* Select IDCT algorithm. */ if (++argn >= argc) /* advance to next argument */ usage(); if (keymatch(argv[argn], "int", 1)) { cinfo->dct_method = JDCT_ISLOW; } else if (keymatch(argv[argn], "fast", 2)) { cinfo->dct_method = JDCT_IFAST; } else if (keymatch(argv[argn], "float", 2)) { cinfo->dct_method = JDCT_FLOAT; } else usage(); } else if (keymatch(arg, "dither", 2)) { /* Select dithering algorithm. */ if (++argn >= argc) /* advance to next argument */ usage(); if (keymatch(argv[argn], "fs", 2)) { cinfo->dither_mode = JDITHER_FS; } else if (keymatch(argv[argn], "none", 2)) { cinfo->dither_mode = JDITHER_NONE; } else if (keymatch(argv[argn], "ordered", 2)) { cinfo->dither_mode = JDITHER_ORDERED; } else usage(); } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { /* Enable debug printouts. */ /* On first -d, print version identification */ static boolean printed_version = FALSE; if (! printed_version) { fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n", JVERSION, JCOPYRIGHT); printed_version = TRUE; } cinfo->err->trace_level++; } else if (keymatch(arg, "fast", 1)) { /* Select recommended processing options for quick-and-dirty output. */ cinfo->two_pass_quantize = FALSE; cinfo->dither_mode = JDITHER_ORDERED; if (! cinfo->quantize_colors) /* don't override an earlier -colors */ cinfo->desired_number_of_colors = 216; cinfo->dct_method = JDCT_FASTEST; cinfo->do_fancy_upsampling = FALSE; } else if (keymatch(arg, "gif", 1)) { /* GIF output format. */ requested_fmt = FMT_GIF; } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { /* Force monochrome output. */ cinfo->out_color_space = JCS_GRAYSCALE; } else if (keymatch(arg, "map", 3)) { /* Quantize to a color map taken from an input file. */ if (++argn >= argc) /* advance to next argument */ usage(); if (for_real) { /* too expensive to do twice! */ #ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */ FILE * mapfile; if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); exit(EXIT_FAILURE); } read_color_map(cinfo, mapfile); fclose(mapfile); cinfo->quantize_colors = TRUE; #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif } } else if (keymatch(arg, "maxmemory", 3)) { /* Maximum memory in Kb (or Mb with 'm'). */ long lval; char ch = 'x'; if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) usage(); if (ch == 'm' || ch == 'M') lval *= 1000L; cinfo->mem->max_memory_to_use = lval * 1000L; } else if (keymatch(arg, "nosmooth", 3)) { /* Suppress fancy upsampling */ cinfo->do_fancy_upsampling = FALSE; } else if (keymatch(arg, "onepass", 3)) { /* Use fast one-pass quantization. */ cinfo->two_pass_quantize = FALSE; } else if (keymatch(arg, "os2", 3)) { /* BMP output format (OS/2 flavor). */ requested_fmt = FMT_OS2; } else if (keymatch(arg, "outfile", 4)) { /* Set output file name. */ if (++argn >= argc) /* advance to next argument */ usage(); outfilename = argv[argn]; /* save it away for later use */ } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) { /* PPM/PGM output format. */ requested_fmt = FMT_PPM; } else if (keymatch(arg, "rle", 1)) { /* RLE output format. */ requested_fmt = FMT_RLE; } else if (keymatch(arg, "scale", 1)) { /* Scale the output image by a fraction M/N. */ if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%d/%d", &cinfo->scale_num, &cinfo->scale_denom) < 1) usage(); } else if (keymatch(arg, "targa", 1)) { /* Targa output format. */ requested_fmt = FMT_TARGA; } else { usage(); /* bogus switch */ } } return argn; /* return index of next arg (file name) */ } /* * Marker processor for COM and interesting APPn markers. * This replaces the library's built-in processor, which just skips the marker. * We want to print out the marker as text, to the extent possible. * Note this code relies on a non-suspending data source. */ LOCAL(unsigned int) jpeg_getc (j_decompress_ptr cinfo) /* Read next byte */ { struct jpeg_source_mgr * datasrc = cinfo->src; if (datasrc->bytes_in_buffer == 0) { if (! (*datasrc->fill_input_buffer) (cinfo)) ERREXIT(cinfo, JERR_CANT_SUSPEND); } datasrc->bytes_in_buffer--; return GETJOCTET(*datasrc->next_input_byte++); } METHODDEF(boolean) print_text_marker (j_decompress_ptr cinfo) { boolean traceit = (cinfo->err->trace_level >= 1); INT32 length; unsigned int ch; unsigned int lastch = 0; length = jpeg_getc(cinfo) << 8; length += jpeg_getc(cinfo); length -= 2; /* discount the length word itself */ if (traceit) { if (cinfo->unread_marker == JPEG_COM) fprintf(stderr, "Comment, length %ld:\n", (long) length); else /* assume it is an APPn otherwise */ fprintf(stderr, "APP%d, length %ld:\n", cinfo->unread_marker - JPEG_APP0, (long) length); } while (--length >= 0) { ch = jpeg_getc(cinfo); if (traceit) { /* Emit the character in a readable form. * Nonprintables are converted to \nnn form, * while \ is converted to \\. * Newlines in CR, CR/LF, or LF form will be printed as one newline. */ if (ch == '\r') { fprintf(stderr, "\n"); } else if (ch == '\n') { if (lastch != '\r') fprintf(stderr, "\n"); } else if (ch == '\\') { fprintf(stderr, "\\\\"); } else if (isprint(ch)) { putc(ch, stderr); } else { fprintf(stderr, "\\%03o", ch); } lastch = ch; } } if (traceit) fprintf(stderr, "\n"); return TRUE; } /* * The main program. */ int main (int argc, char **argv) { struct jpeg_decompress_struct cinfo; struct jpeg_error_mgr jerr; #ifdef PROGRESS_REPORT struct cdjpeg_progress_mgr progress; #endif int file_index; djpeg_dest_ptr dest_mgr = NULL; FILE * input_file; FILE * output_file; JDIMENSION num_scanlines; /* On Mac, fetch a command line. */ #ifdef USE_CCOMMAND argc = ccommand(&argv); #endif progname = argv[0]; if (progname == NULL || progname[0] == 0) progname = "djpeg"; /* in case C library doesn't provide it */ /* Initialize the JPEG decompression object with default error handling. */ cinfo.err = jpeg_std_error(&jerr); jpeg_create_decompress(&cinfo); /* Add some application-specific error messages (from cderror.h) */ jerr.addon_message_table = cdjpeg_message_table; jerr.first_addon_message = JMSG_FIRSTADDONCODE; jerr.last_addon_message = JMSG_LASTADDONCODE; /* Insert custom marker processor for COM and APP12. * APP12 is used by some digital camera makers for textual info, * so we provide the ability to display it as text. * If you like, additional APPn marker types can be selected for display, * but don't try to override APP0 or APP14 this way (see libjpeg.doc). */ jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker); jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker); /* Now safe to enable signal catcher. */ #ifdef NEED_SIGNAL_CATCHER enable_signal_catcher((j_common_ptr) &cinfo); #endif /* Scan command line to find file names. */ /* It is convenient to use just one switch-parsing routine, but the switch * values read here are ignored; we will rescan the switches after opening * the input file. * (Exception: tracing level set here controls verbosity for COM markers * found during jpeg_read_header...) */ file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); #ifdef TWO_FILE_COMMANDLINE /* Must have either -outfile switch or explicit output file name */ if (outfilename == NULL) { if (file_index != argc-2) { fprintf(stderr, "%s: must name one input and one output file\n", progname); usage(); } outfilename = argv[file_index+1]; } else { if (file_index != argc-1) { fprintf(stderr, "%s: must name one input and one output file\n", progname); usage(); } } #else /* Unix style: expect zero or one file name */ if (file_index < argc-1) { fprintf(stderr, "%s: only one input file\n", progname); usage(); } #endif /* TWO_FILE_COMMANDLINE */ /* Open the input file. */ if (file_index < argc) { if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); exit(EXIT_FAILURE); } } else { /* default input file is stdin */ input_file = read_stdin(); } /* Open the output file. */ if (outfilename != NULL) { if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, outfilename); exit(EXIT_FAILURE); } } else { /* default output file is stdout */ output_file = write_stdout(); } #ifdef PROGRESS_REPORT start_progress_monitor((j_common_ptr) &cinfo, &progress); #endif /* Specify data source for decompression */ jpeg_stdio_src(&cinfo, input_file); /* Read file header, set default decompression parameters */ (void) jpeg_read_header(&cinfo, TRUE); /* Adjust default decompression parameters by re-parsing the options */ file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); /* Initialize the output module now to let it override any crucial * option settings (for instance, GIF wants to force color quantization). */ switch (requested_fmt) { #ifdef BMP_SUPPORTED case FMT_BMP: dest_mgr = jinit_write_bmp(&cinfo, FALSE); break; case FMT_OS2: dest_mgr = jinit_write_bmp(&cinfo, TRUE); break; #endif #ifdef GIF_SUPPORTED case FMT_GIF: dest_mgr = jinit_write_gif(&cinfo); break; #endif #ifdef PPM_SUPPORTED case FMT_PPM: dest_mgr = jinit_write_ppm(&cinfo); break; #endif #ifdef RLE_SUPPORTED case FMT_RLE: dest_mgr = jinit_write_rle(&cinfo); break; #endif #ifdef TARGA_SUPPORTED case FMT_TARGA: dest_mgr = jinit_write_targa(&cinfo); break; #endif default: ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT); break; } dest_mgr->output_file = output_file; /* Start decompressor */ (void) jpeg_start_decompress(&cinfo); /* Write output file header */ (*dest_mgr->start_output) (&cinfo, dest_mgr); /* Process data */ while (cinfo.output_scanline < cinfo.output_height) { num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer, dest_mgr->buffer_height); (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines); } #ifdef PROGRESS_REPORT /* Hack: count final pass as done in case finish_output does an extra pass. * The library won't have updated completed_passes. */ progress.pub.completed_passes = progress.pub.total_passes; #endif /* Finish decompression and release memory. * I must do it in this order because output module has allocated memory * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory. */ (*dest_mgr->finish_output) (&cinfo, dest_mgr); (void) jpeg_finish_decompress(&cinfo); jpeg_destroy_decompress(&cinfo); /* Close files, if we opened them */ if (input_file != stdin) fclose(input_file); if (output_file != stdout) fclose(output_file); #ifdef PROGRESS_REPORT end_progress_monitor((j_common_ptr) &cinfo); #endif /* All done. */ exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); return 0; /* suppress no-return-value warnings */ } jpeg-8d1/jcapimin.c0000644000175000017500000002225011336020166012760 0ustar billbill/* * jcapimin.c * * Copyright (C) 1994-1998, Thomas G. Lane. * Modified 2003-2010 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains application interface code for the compression half * of the JPEG library. These are the "minimum" API routines that may be * needed in either the normal full-compression case or the transcoding-only * case. * * Most of the routines intended to be called directly by an application * are in this file or in jcapistd.c. But also see jcparam.c for * parameter-setup helper routines, jcomapi.c for routines shared by * compression and decompression, and jctrans.c for the transcoding case. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * Initialization of a JPEG compression object. * The error manager must already be set up (in case memory manager fails). */ GLOBAL(void) jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize) { int i; /* Guard against version mismatches between library and caller. */ cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */ if (version != JPEG_LIB_VERSION) ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); if (structsize != SIZEOF(struct jpeg_compress_struct)) ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, (int) SIZEOF(struct jpeg_compress_struct), (int) structsize); /* For debugging purposes, we zero the whole master structure. * But the application has already set the err pointer, and may have set * client_data, so we have to save and restore those fields. * Note: if application hasn't set client_data, tools like Purify may * complain here. */ { struct jpeg_error_mgr * err = cinfo->err; void * client_data = cinfo->client_data; /* ignore Purify complaint here */ MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct)); cinfo->err = err; cinfo->client_data = client_data; } cinfo->is_decompressor = FALSE; /* Initialize a memory manager instance for this object */ jinit_memory_mgr((j_common_ptr) cinfo); /* Zero out pointers to permanent structures. */ cinfo->progress = NULL; cinfo->dest = NULL; cinfo->comp_info = NULL; for (i = 0; i < NUM_QUANT_TBLS; i++) { cinfo->quant_tbl_ptrs[i] = NULL; cinfo->q_scale_factor[i] = 100; } for (i = 0; i < NUM_HUFF_TBLS; i++) { cinfo->dc_huff_tbl_ptrs[i] = NULL; cinfo->ac_huff_tbl_ptrs[i] = NULL; } /* Must do it here for emit_dqt in case jpeg_write_tables is used */ cinfo->block_size = DCTSIZE; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; cinfo->script_space = NULL; cinfo->input_gamma = 1.0; /* in case application forgets */ /* OK, I'm ready */ cinfo->global_state = CSTATE_START; } /* * Destruction of a JPEG compression object */ GLOBAL(void) jpeg_destroy_compress (j_compress_ptr cinfo) { jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ } /* * Abort processing of a JPEG compression operation, * but don't destroy the object itself. */ GLOBAL(void) jpeg_abort_compress (j_compress_ptr cinfo) { jpeg_abort((j_common_ptr) cinfo); /* use common routine */ } /* * Forcibly suppress or un-suppress all quantization and Huffman tables. * Marks all currently defined tables as already written (if suppress) * or not written (if !suppress). This will control whether they get emitted * by a subsequent jpeg_start_compress call. * * This routine is exported for use by applications that want to produce * abbreviated JPEG datastreams. It logically belongs in jcparam.c, but * since it is called by jpeg_start_compress, we put it here --- otherwise * jcparam.o would be linked whether the application used it or not. */ GLOBAL(void) jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress) { int i; JQUANT_TBL * qtbl; JHUFF_TBL * htbl; for (i = 0; i < NUM_QUANT_TBLS; i++) { if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL) qtbl->sent_table = suppress; } for (i = 0; i < NUM_HUFF_TBLS; i++) { if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL) htbl->sent_table = suppress; if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL) htbl->sent_table = suppress; } } /* * Finish JPEG compression. * * If a multipass operating mode was selected, this may do a great deal of * work including most of the actual output. */ GLOBAL(void) jpeg_finish_compress (j_compress_ptr cinfo) { JDIMENSION iMCU_row; if (cinfo->global_state == CSTATE_SCANNING || cinfo->global_state == CSTATE_RAW_OK) { /* Terminate first pass */ if (cinfo->next_scanline < cinfo->image_height) ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); (*cinfo->master->finish_pass) (cinfo); } else if (cinfo->global_state != CSTATE_WRCOEFS) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* Perform any remaining passes */ while (! cinfo->master->is_last_pass) { (*cinfo->master->prepare_for_pass) (cinfo); for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) { if (cinfo->progress != NULL) { cinfo->progress->pass_counter = (long) iMCU_row; cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows; (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); } /* We bypass the main controller and invoke coef controller directly; * all work is being done from the coefficient buffer. */ if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL)) ERREXIT(cinfo, JERR_CANT_SUSPEND); } (*cinfo->master->finish_pass) (cinfo); } /* Write EOI, do final cleanup */ (*cinfo->marker->write_file_trailer) (cinfo); (*cinfo->dest->term_destination) (cinfo); /* We can use jpeg_abort to release memory and reset global_state */ jpeg_abort((j_common_ptr) cinfo); } /* * Write a special marker. * This is only recommended for writing COM or APPn markers. * Must be called after jpeg_start_compress() and before * first call to jpeg_write_scanlines() or jpeg_write_raw_data(). */ GLOBAL(void) jpeg_write_marker (j_compress_ptr cinfo, int marker, const JOCTET *dataptr, unsigned int datalen) { JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val)); if (cinfo->next_scanline != 0 || (cinfo->global_state != CSTATE_SCANNING && cinfo->global_state != CSTATE_RAW_OK && cinfo->global_state != CSTATE_WRCOEFS)) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); write_marker_byte = cinfo->marker->write_marker_byte; /* copy for speed */ while (datalen--) { (*write_marker_byte) (cinfo, *dataptr); dataptr++; } } /* Same, but piecemeal. */ GLOBAL(void) jpeg_write_m_header (j_compress_ptr cinfo, int marker, unsigned int datalen) { if (cinfo->next_scanline != 0 || (cinfo->global_state != CSTATE_SCANNING && cinfo->global_state != CSTATE_RAW_OK && cinfo->global_state != CSTATE_WRCOEFS)) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); } GLOBAL(void) jpeg_write_m_byte (j_compress_ptr cinfo, int val) { (*cinfo->marker->write_marker_byte) (cinfo, val); } /* * Alternate compression function: just write an abbreviated table file. * Before calling this, all parameters and a data destination must be set up. * * To produce a pair of files containing abbreviated tables and abbreviated * image data, one would proceed as follows: * * initialize JPEG object * set JPEG parameters * set destination to table file * jpeg_write_tables(cinfo); * set destination to image file * jpeg_start_compress(cinfo, FALSE); * write data... * jpeg_finish_compress(cinfo); * * jpeg_write_tables has the side effect of marking all tables written * (same as jpeg_suppress_tables(..., TRUE)). Thus a subsequent start_compress * will not re-emit the tables unless it is passed write_all_tables=TRUE. */ GLOBAL(void) jpeg_write_tables (j_compress_ptr cinfo) { if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* (Re)initialize error mgr and destination modules */ (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); (*cinfo->dest->init_destination) (cinfo); /* Initialize the marker writer ... bit of a crock to do it here. */ jinit_marker_writer(cinfo); /* Write them tables! */ (*cinfo->marker->write_tables_only) (cinfo); /* And clean up. */ (*cinfo->dest->term_destination) (cinfo); /* * In library releases up through v6a, we called jpeg_abort() here to free * any working memory allocated by the destination manager and marker * writer. Some applications had a problem with that: they allocated space * of their own from the library memory manager, and didn't want it to go * away during write_tables. So now we do nothing. This will cause a * memory leak if an app calls write_tables repeatedly without doing a full * compression cycle or otherwise resetting the JPEG object. However, that * seems less bad than unexpectedly freeing memory in the normal case. * An app that prefers the old behavior can call jpeg_abort for itself after * each call to jpeg_write_tables(). */ } jpeg-8d1/makejfil.v100000644000175000017500000001323511367063266013153 0ustar billbill {4FC737F1-C7A5-4376-A066-2A32D752A2FF} cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx {93995380-89BD-4b04-88EB-625FBE52EBFB} h;hpp;hxx;hm;inl;inc;xsd {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms Header Files Header Files Header Files Header Files Header Files Header Files Header Files Header Files Header Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files jpeg-8d1/makecmak.vc60000644000175000017500000000631511174127244013224 0ustar billbill# Microsoft Developer Studio Generated NMAKE File, Based on cjpeg.dsp !IF "$(CFG)" == "" CFG=cjpeg - Win32 !MESSAGE Keine Konfiguration angegeben. cjpeg - Win32 wird als Standard verwendet. !ENDIF !IF "$(CFG)" != "cjpeg - Win32" !MESSAGE Ungltige Konfiguration "$(CFG)" angegeben. !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "cjpeg.mak" CFG="cjpeg - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "cjpeg - Win32" (basierend auf "Win32 (x86) Console Application") !MESSAGE !ERROR Eine ungltige Konfiguration wurde angegeben. !ENDIF !IF "$(OS)" == "Windows_NT" NULL= !ELSE NULL=nul !ENDIF CPP=cl.exe RSC=rc.exe OUTDIR=.\cjpeg\Release INTDIR=.\cjpeg\Release # Begin Custom Macros OutDir=.\cjpeg\Release # End Custom Macros ALL : "$(OUTDIR)\cjpeg.exe" CLEAN : -@erase "$(INTDIR)\cdjpeg.obj" -@erase "$(INTDIR)\cjpeg.obj" -@erase "$(INTDIR)\rdbmp.obj" -@erase "$(INTDIR)\rdgif.obj" -@erase "$(INTDIR)\rdppm.obj" -@erase "$(INTDIR)\rdrle.obj" -@erase "$(INTDIR)\rdswitch.obj" -@erase "$(INTDIR)\rdtarga.obj" -@erase "$(INTDIR)\vc60.idb" -@erase "$(OUTDIR)\cjpeg.exe" "$(OUTDIR)" : if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)" BSC32=bscmake.exe BSC32_FLAGS=/nologo /o"$(OUTDIR)\cjpeg.bsc" BSC32_SBRS= \ LINK32=link.exe LINK32_FLAGS=Release\jpeg.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\cjpeg.pdb" /machine:I386 /out:"$(OUTDIR)\cjpeg.exe" LINK32_OBJS= \ "$(INTDIR)\cdjpeg.obj" \ "$(INTDIR)\cjpeg.obj" \ "$(INTDIR)\rdbmp.obj" \ "$(INTDIR)\rdgif.obj" \ "$(INTDIR)\rdppm.obj" \ "$(INTDIR)\rdrle.obj" \ "$(INTDIR)\rdswitch.obj" \ "$(INTDIR)\rdtarga.obj" "$(OUTDIR)\cjpeg.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS) $(LINK32) @<< $(LINK32_FLAGS) $(LINK32_OBJS) << CPP_PROJ=/nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /Fp"$(INTDIR)\cjpeg.pch" /YX /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c .c{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .cpp{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .cxx{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .c{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << .cpp{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << .cxx{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << !IF "$(NO_EXTERNAL_DEPS)" != "1" !IF EXISTS("cjpeg.dep") !INCLUDE "cjpeg.dep" !ELSE !MESSAGE Warning: cannot find "cjpeg.dep" !ENDIF !ENDIF !IF "$(CFG)" == "cjpeg - Win32" SOURCE=.\cdjpeg.c "$(INTDIR)\cdjpeg.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\cjpeg.c "$(INTDIR)\cjpeg.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdbmp.c "$(INTDIR)\rdbmp.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdgif.c "$(INTDIR)\rdgif.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdppm.c "$(INTDIR)\rdppm.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdrle.c "$(INTDIR)\rdrle.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdswitch.c "$(INTDIR)\rdswitch.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdtarga.c "$(INTDIR)\rdtarga.obj" : $(SOURCE) "$(INTDIR)" !ENDIF jpeg-8d1/makefile.unix0000644000175000017500000003050511367317556013526 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is suitable for Unix-like systems with non-ANSI compilers. # If you have an ANSI compiler, makefile.ansi is a better starting point. # Read installation instructions before saying "make" !! # The name of your C compiler: CC= cc # You may need to adjust these cc options: CFLAGS= -O # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via -D switches here. # However, any special defines for ansi2knr.c may be included here: ANSI2KNRFLAGS= # Link-time cc options: LDFLAGS= # To link any special libraries, add the necessary -l commands here. LDLIBS= # Put here the object file name for the correct system-dependent memory # manager file. For Unix this is usually jmemnobs.o, but you may want # to use jmemansi.o or jmemname.o if you have limited swap space. SYSDEPMEM= jmemnobs.o # miscellaneous OS-dependent stuff # linker LN= $(CC) # file deletion command RM= rm -f # file rename command MV= mv # library (.a) file creation command AR= ar rc # second step in .a creation (use "touch" if not needed) AR2= ranlib # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.o jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.o jcapistd.o jcarith.o jctrans.o jcparam.o \ jdatadst.o jcinit.o jcmaster.o jcmarker.o jcmainct.o jcprepct.o \ jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o jfdctfst.o \ jfdctflt.o jfdctint.o # decompression library object files DLIBOBJECTS= jdapimin.o jdapistd.o jdarith.o jdtrans.o jdatasrc.o \ jdmaster.o jdinput.o jdmarker.o jdhuff.o jdmainct.o \ jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o \ jidctint.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o # These objectfiles are included in libjpeg.a LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ cdjpeg.o DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ cdjpeg.o TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o all: ansi2knr libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom # This rule causes ansi2knr to be invoked. .c.o: ./ansi2knr $*.c T$*.c $(CC) $(CFLAGS) -c T$*.c $(RM) T$*.c $*.o $(MV) T$*.o $*.o ansi2knr: ansi2knr.c $(CC) $(CFLAGS) $(ANSI2KNRFLAGS) -o ansi2knr ansi2knr.c libjpeg.a: ansi2knr $(LIBOBJECTS) $(RM) libjpeg.a $(AR) libjpeg.a $(LIBOBJECTS) $(AR2) libjpeg.a cjpeg: ansi2knr $(COBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o cjpeg $(COBJECTS) libjpeg.a $(LDLIBS) djpeg: ansi2knr $(DOBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS) jpegtran: ansi2knr $(TROBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS) rdjpgcom: rdjpgcom.o $(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS) wrjpgcom: wrjpgcom.o $(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.o $(LDLIBS) jconfig.h: jconfig.txt echo You must prepare a system-dependent jconfig.h file. echo Please read the installation directions in install.txt. exit 1 clean: $(RM) *.o cjpeg djpeg jpegtran libjpeg.a rdjpgcom wrjpgcom $(RM) ansi2knr core testout* test: cjpeg djpeg jpegtran $(RM) testout* ./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg ./cjpeg -dct int -outfile testout.jpg testimg.ppm ./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm ./jpegtran -outfile testoutt.jpg testprog.jpg cmp testimg.ppm testout.ppm cmp testimg.bmp testout.bmp cmp testimg.jpg testout.jpg cmp testimg.ppm testoutp.ppm cmp testimgp.jpg testoutp.jpg cmp testorig.jpg testoutt.jpg jaricom.o: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.o: jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdarith.o: jdarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jpeg-8d1/jmemnobs.c0000644000175000017500000000532406073530746013017 0ustar billbill/* * jmemnobs.c * * Copyright (C) 1992-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file provides a really simple implementation of the system- * dependent portion of the JPEG memory manager. This implementation * assumes that no backing-store files are needed: all required space * can be obtained from malloc(). * This is very portable in the sense that it'll compile on almost anything, * but you'd better have lots of main memory (or virtual memory) if you want * to process big images. * Note that the max_memory_to_use option is ignored by this implementation. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jmemsys.h" /* import the system-dependent declarations */ #ifndef HAVE_STDLIB_H /* should declare malloc(),free() */ extern void * malloc JPP((size_t size)); extern void free JPP((void *ptr)); #endif /* * Memory allocation and freeing are controlled by the regular library * routines malloc() and free(). */ GLOBAL(void *) jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) { return (void *) malloc(sizeofobject); } GLOBAL(void) jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) { free(object); } /* * "Large" objects are treated the same as "small" ones. * NB: although we include FAR keywords in the routine declarations, * this file won't actually work in 80x86 small/medium model; at least, * you probably won't be able to process useful-size images in only 64KB. */ GLOBAL(void FAR *) jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) { return (void FAR *) malloc(sizeofobject); } GLOBAL(void) jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) { free(object); } /* * This routine computes the total memory space available for allocation. * Here we always say, "we got all you want bud!" */ GLOBAL(long) jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, long max_bytes_needed, long already_allocated) { return max_bytes_needed; } /* * Backing store (temporary file) management. * Since jpeg_mem_available always promised the moon, * this should never be called and we can just error out. */ GLOBAL(void) jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { ERREXIT(cinfo, JERR_NO_BACKING_STORE); } /* * These routines take care of any system-dependent initialization and * cleanup required. Here, there isn't any. */ GLOBAL(long) jpeg_mem_init (j_common_ptr cinfo) { return 0; /* just set max_memory_to_use to 0 */ } GLOBAL(void) jpeg_mem_term (j_common_ptr cinfo) { /* no work */ } jpeg-8d1/rdtarga.c0000644000175000017500000003516706073730654012641 0ustar billbill/* * rdtarga.c * * Copyright (C) 1991-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to read input images in Targa format. * * These routines may need modification for non-Unix environments or * specialized applications. As they stand, they assume input from * an ordinary stdio stream. They further assume that reading begins * at the start of the file; start_input may need work if the * user interface has already read some data (e.g., to determine that * the file is indeed Targa format). * * Based on code contributed by Lee Daniel Crocker. */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef TARGA_SUPPORTED /* Macros to deal with unsigned chars as efficiently as compiler allows */ #ifdef HAVE_UNSIGNED_CHAR typedef unsigned char U_CHAR; #define UCH(x) ((int) (x)) #else /* !HAVE_UNSIGNED_CHAR */ #ifdef CHAR_IS_UNSIGNED typedef char U_CHAR; #define UCH(x) ((int) (x)) #else typedef char U_CHAR; #define UCH(x) ((int) (x) & 0xFF) #endif #endif /* HAVE_UNSIGNED_CHAR */ #define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) /* Private version of data source object */ typedef struct _tga_source_struct * tga_source_ptr; typedef struct _tga_source_struct { struct cjpeg_source_struct pub; /* public fields */ j_compress_ptr cinfo; /* back link saves passing separate parm */ JSAMPARRAY colormap; /* Targa colormap (converted to my format) */ jvirt_sarray_ptr whole_image; /* Needed if funny input row order */ JDIMENSION current_row; /* Current logical row number to read */ /* Pointer to routine to extract next Targa pixel from input file */ JMETHOD(void, read_pixel, (tga_source_ptr sinfo)); /* Result of read_pixel is delivered here: */ U_CHAR tga_pixel[4]; int pixel_size; /* Bytes per Targa pixel (1 to 4) */ /* State info for reading RLE-coded pixels; both counts must be init to 0 */ int block_count; /* # of pixels remaining in RLE block */ int dup_pixel_count; /* # of times to duplicate previous pixel */ /* This saves the correct pixel-row-expansion method for preload_image */ JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)); } tga_source_struct; /* For expanding 5-bit pixel values to 8-bit with best rounding */ static const UINT8 c5to8bits[32] = { 0, 8, 16, 25, 33, 41, 49, 58, 66, 74, 82, 90, 99, 107, 115, 123, 132, 140, 148, 156, 165, 173, 181, 189, 197, 206, 214, 222, 230, 239, 247, 255 }; LOCAL(int) read_byte (tga_source_ptr sinfo) /* Read next byte from Targa file */ { register FILE *infile = sinfo->pub.input_file; register int c; if ((c = getc(infile)) == EOF) ERREXIT(sinfo->cinfo, JERR_INPUT_EOF); return c; } LOCAL(void) read_colormap (tga_source_ptr sinfo, int cmaplen, int mapentrysize) /* Read the colormap from a Targa file */ { int i; /* Presently only handles 24-bit BGR format */ if (mapentrysize != 24) ERREXIT(sinfo->cinfo, JERR_TGA_BADCMAP); for (i = 0; i < cmaplen; i++) { sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); } } /* * read_pixel methods: get a single pixel from Targa file into tga_pixel[] */ METHODDEF(void) read_non_rle_pixel (tga_source_ptr sinfo) /* Read one Targa pixel from the input file; no RLE expansion */ { register FILE *infile = sinfo->pub.input_file; register int i; for (i = 0; i < sinfo->pixel_size; i++) { sinfo->tga_pixel[i] = (U_CHAR) getc(infile); } } METHODDEF(void) read_rle_pixel (tga_source_ptr sinfo) /* Read one Targa pixel from the input file, expanding RLE data as needed */ { register FILE *infile = sinfo->pub.input_file; register int i; /* Duplicate previously read pixel? */ if (sinfo->dup_pixel_count > 0) { sinfo->dup_pixel_count--; return; } /* Time to read RLE block header? */ if (--sinfo->block_count < 0) { /* decrement pixels remaining in block */ i = read_byte(sinfo); if (i & 0x80) { /* Start of duplicate-pixel block? */ sinfo->dup_pixel_count = i & 0x7F; /* number of dups after this one */ sinfo->block_count = 0; /* then read new block header */ } else { sinfo->block_count = i & 0x7F; /* number of pixels after this one */ } } /* Read next pixel */ for (i = 0; i < sinfo->pixel_size; i++) { sinfo->tga_pixel[i] = (U_CHAR) getc(infile); } } /* * Read one row of pixels. * * We provide several different versions depending on input file format. */ METHODDEF(JDIMENSION) get_8bit_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 8-bit grayscale pixels */ { tga_source_ptr source = (tga_source_ptr) sinfo; register JSAMPROW ptr; register JDIMENSION col; ptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]); } return 1; } METHODDEF(JDIMENSION) get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 8-bit colormap indexes */ { tga_source_ptr source = (tga_source_ptr) sinfo; register int t; register JSAMPROW ptr; register JDIMENSION col; register JSAMPARRAY colormap = source->colormap; ptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ t = UCH(source->tga_pixel[0]); *ptr++ = colormap[0][t]; *ptr++ = colormap[1][t]; *ptr++ = colormap[2][t]; } return 1; } METHODDEF(JDIMENSION) get_16bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 16-bit pixels */ { tga_source_ptr source = (tga_source_ptr) sinfo; register int t; register JSAMPROW ptr; register JDIMENSION col; ptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ t = UCH(source->tga_pixel[0]); t += UCH(source->tga_pixel[1]) << 8; /* We expand 5 bit data to 8 bit sample width. * The format of the 16-bit (LSB first) input word is * xRRRRRGGGGGBBBBB */ ptr[2] = (JSAMPLE) c5to8bits[t & 0x1F]; t >>= 5; ptr[1] = (JSAMPLE) c5to8bits[t & 0x1F]; t >>= 5; ptr[0] = (JSAMPLE) c5to8bits[t & 0x1F]; ptr += 3; } return 1; } METHODDEF(JDIMENSION) get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 24-bit pixels */ { tga_source_ptr source = (tga_source_ptr) sinfo; register JSAMPROW ptr; register JDIMENSION col; ptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ *ptr++ = (JSAMPLE) UCH(source->tga_pixel[2]); /* change BGR to RGB order */ *ptr++ = (JSAMPLE) UCH(source->tga_pixel[1]); *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]); } return 1; } /* * Targa also defines a 32-bit pixel format with order B,G,R,A. * We presently ignore the attribute byte, so the code for reading * these pixels is identical to the 24-bit routine above. * This works because the actual pixel length is only known to read_pixel. */ #define get_32bit_row get_24bit_row /* * This method is for re-reading the input data in standard top-down * row order. The entire image has already been read into whole_image * with proper conversion of pixel format, but it's in a funny row order. */ METHODDEF(JDIMENSION) get_memory_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { tga_source_ptr source = (tga_source_ptr) sinfo; JDIMENSION source_row; /* Compute row of source that maps to current_row of normal order */ /* For now, assume image is bottom-up and not interlaced. */ /* NEEDS WORK to support interlaced images! */ source_row = cinfo->image_height - source->current_row - 1; /* Fetch that row from virtual array */ source->pub.buffer = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, source->whole_image, source_row, (JDIMENSION) 1, FALSE); source->current_row++; return 1; } /* * This method loads the image into whole_image during the first call on * get_pixel_rows. The get_pixel_rows pointer is then adjusted to call * get_memory_row on subsequent calls. */ METHODDEF(JDIMENSION) preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { tga_source_ptr source = (tga_source_ptr) sinfo; JDIMENSION row; cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; /* Read the data into a virtual array in input-file row order. */ for (row = 0; row < cinfo->image_height; row++) { if (progress != NULL) { progress->pub.pass_counter = (long) row; progress->pub.pass_limit = (long) cinfo->image_height; (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); } source->pub.buffer = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, source->whole_image, row, (JDIMENSION) 1, TRUE); (*source->get_pixel_rows) (cinfo, sinfo); } if (progress != NULL) progress->completed_extra_passes++; /* Set up to read from the virtual array in unscrambled order */ source->pub.get_pixel_rows = get_memory_row; source->current_row = 0; /* And read the first row */ return get_memory_row(cinfo, sinfo); } /* * Read the file header; return image size and component count. */ METHODDEF(void) start_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { tga_source_ptr source = (tga_source_ptr) sinfo; U_CHAR targaheader[18]; int idlen, cmaptype, subtype, flags, interlace_type, components; unsigned int width, height, maplen; boolean is_bottom_up; #define GET_2B(offset) ((unsigned int) UCH(targaheader[offset]) + \ (((unsigned int) UCH(targaheader[offset+1])) << 8)) if (! ReadOK(source->pub.input_file, targaheader, 18)) ERREXIT(cinfo, JERR_INPUT_EOF); /* Pretend "15-bit" pixels are 16-bit --- we ignore attribute bit anyway */ if (targaheader[16] == 15) targaheader[16] = 16; idlen = UCH(targaheader[0]); cmaptype = UCH(targaheader[1]); subtype = UCH(targaheader[2]); maplen = GET_2B(5); width = GET_2B(12); height = GET_2B(14); source->pixel_size = UCH(targaheader[16]) >> 3; flags = UCH(targaheader[17]); /* Image Descriptor byte */ is_bottom_up = ((flags & 0x20) == 0); /* bit 5 set => top-down */ interlace_type = flags >> 6; /* bits 6/7 are interlace code */ if (cmaptype > 1 || /* cmaptype must be 0 or 1 */ source->pixel_size < 1 || source->pixel_size > 4 || (UCH(targaheader[16]) & 7) != 0 || /* bits/pixel must be multiple of 8 */ interlace_type != 0) /* currently don't allow interlaced image */ ERREXIT(cinfo, JERR_TGA_BADPARMS); if (subtype > 8) { /* It's an RLE-coded file */ source->read_pixel = read_rle_pixel; source->block_count = source->dup_pixel_count = 0; subtype -= 8; } else { /* Non-RLE file */ source->read_pixel = read_non_rle_pixel; } /* Now should have subtype 1, 2, or 3 */ components = 3; /* until proven different */ cinfo->in_color_space = JCS_RGB; switch (subtype) { case 1: /* Colormapped image */ if (source->pixel_size == 1 && cmaptype == 1) source->get_pixel_rows = get_8bit_row; else ERREXIT(cinfo, JERR_TGA_BADPARMS); TRACEMS2(cinfo, 1, JTRC_TGA_MAPPED, width, height); break; case 2: /* RGB image */ switch (source->pixel_size) { case 2: source->get_pixel_rows = get_16bit_row; break; case 3: source->get_pixel_rows = get_24bit_row; break; case 4: source->get_pixel_rows = get_32bit_row; break; default: ERREXIT(cinfo, JERR_TGA_BADPARMS); break; } TRACEMS2(cinfo, 1, JTRC_TGA, width, height); break; case 3: /* Grayscale image */ components = 1; cinfo->in_color_space = JCS_GRAYSCALE; if (source->pixel_size == 1) source->get_pixel_rows = get_8bit_gray_row; else ERREXIT(cinfo, JERR_TGA_BADPARMS); TRACEMS2(cinfo, 1, JTRC_TGA_GRAY, width, height); break; default: ERREXIT(cinfo, JERR_TGA_BADPARMS); break; } if (is_bottom_up) { /* Create a virtual array to buffer the upside-down image. */ source->whole_image = (*cinfo->mem->request_virt_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, (JDIMENSION) width * components, (JDIMENSION) height, (JDIMENSION) 1); if (cinfo->progress != NULL) { cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; progress->total_extra_passes++; /* count file input as separate pass */ } /* source->pub.buffer will point to the virtual array. */ source->pub.buffer_height = 1; /* in case anyone looks at it */ source->pub.get_pixel_rows = preload_image; } else { /* Don't need a virtual array, but do need a one-row input buffer. */ source->whole_image = NULL; source->pub.buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) width * components, (JDIMENSION) 1); source->pub.buffer_height = 1; source->pub.get_pixel_rows = source->get_pixel_rows; } while (idlen--) /* Throw away ID field */ (void) read_byte(source); if (maplen > 0) { if (maplen > 256 || GET_2B(3) != 0) ERREXIT(cinfo, JERR_TGA_BADCMAP); /* Allocate space to store the colormap */ source->colormap = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) maplen, (JDIMENSION) 3); /* and read it from the file */ read_colormap(source, (int) maplen, UCH(targaheader[7])); } else { if (cmaptype) /* but you promised a cmap! */ ERREXIT(cinfo, JERR_TGA_BADPARMS); source->colormap = NULL; } cinfo->input_components = components; cinfo->data_precision = 8; cinfo->image_width = width; cinfo->image_height = height; } /* * Finish up at the end of the file. */ METHODDEF(void) finish_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { /* no work */ } /* * The module selection routine for Targa format input. */ GLOBAL(cjpeg_source_ptr) jinit_read_targa (j_compress_ptr cinfo) { tga_source_ptr source; /* Create module interface object */ source = (tga_source_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(tga_source_struct)); source->cinfo = cinfo; /* make back link for subroutines */ /* Fill in method ptrs, except get_pixel_rows which start_input sets */ source->pub.start_input = start_input_tga; source->pub.finish_input = finish_input_tga; return (cjpeg_source_ptr) source; } #endif /* TARGA_SUPPORTED */ jpeg-8d1/makerdsp.vc60000644000175000017500000000512511174123762013260 0ustar billbill# Microsoft Developer Studio Project File - Name="rdjpgcom" - Package Owner=<4> # Microsoft Developer Studio Generated Build File, Format Version 6.00 # ** NICHT BEARBEITEN ** # TARGTYPE "Win32 (x86) Console Application" 0x0103 CFG=rdjpgcom - Win32 !MESSAGE Dies ist kein gltiges Makefile. Zum Erstellen dieses Projekts mit NMAKE !MESSAGE verwenden Sie den Befehl "Makefile exportieren" und fhren Sie den Befehl !MESSAGE !MESSAGE NMAKE /f "rdjpgcom.mak". !MESSAGE !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "rdjpgcom.mak" CFG="rdjpgcom - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "rdjpgcom - Win32" (basierend auf "Win32 (x86) Console Application") !MESSAGE # Begin Project # PROP AllowPerConfigDependencies 0 # PROP Scc_ProjName "" # PROP Scc_LocalPath "" CPP=cl.exe RSC=rc.exe # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 0 # PROP BASE Output_Dir ".\rdjpgcom\Release" # PROP BASE Intermediate_Dir ".\rdjpgcom\Release" # PROP BASE Target_Dir ".\rdjpgcom" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 0 # PROP Output_Dir ".\rdjpgcom\Release" # PROP Intermediate_Dir ".\rdjpgcom\Release" # PROP Ignore_Export_Lib 0 # PROP Target_Dir ".\rdjpgcom" # ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /c # ADD CPP /nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /FD /c # ADD BASE RSC /l 0x409 /d "NDEBUG" # ADD RSC /l 0x409 /d "NDEBUG" BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LINK32=link.exe # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # ADD LINK32 Release\jpeg.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # Begin Target # Name "rdjpgcom - Win32" # Begin Group "Quellcodedateien" # PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat;for;f90" # Begin Source File SOURCE=.\rdjpgcom.c # End Source File # End Group # Begin Group "Header-Dateien" # PROP Default_Filter "h;hpp;hxx;hm;inl;fi;fd" # Begin Source File SOURCE=.\jconfig.h # End Source File # Begin Source File SOURCE=.\jinclude.h # End Source File # End Group # Begin Group "Ressourcendateien" # PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;cnt;rtf;gif;jpg;jpeg;jpe" # End Group # End Target # End Project jpeg-8d1/jconfig.sas0000644000175000017500000000222211161225511013143 0ustar billbill/* jconfig.sas --- jconfig.h for Amiga systems using SAS C 6.0 and up. */ /* see jconfig.txt for explanations */ #define HAVE_PROTOTYPES #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* #define void char */ /* #define const */ #undef CHAR_IS_UNSIGNED #define HAVE_STDDEF_H #define HAVE_STDLIB_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #undef NEED_FAR_POINTERS #undef NEED_SHORT_EXTERNAL_NAMES #undef INCOMPLETE_TYPES_BROKEN #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #define TEMP_DIRECTORY "JPEGTMP:" /* recommended setting for Amiga */ #define NO_MKTEMP /* SAS C doesn't have mktemp() */ #define SHORTxSHORT_32 /* produces better DCT code with SAS C */ #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #define TWO_FILE_COMMANDLINE #define NEED_SIGNAL_CATCHER #undef DONT_USE_B_MODE #undef PROGRESS_REPORT /* optional */ #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/makefile.dj0000644000175000017500000003012511367317276013135 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is for DJGPP (Delorie's GNU C port on MS-DOS), v2.0 or later. # Thanks to Frank J. Donahoe for this version. # Read installation instructions before saying "make" !! # The name of your C compiler: CC= gcc # You may need to adjust these cc options: CFLAGS= -O2 -Wall -I. # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via -D switches here. # Link-time cc options: LDFLAGS= -s # To link any special libraries, add the necessary -l commands here. LDLIBS= # Put here the object file name for the correct system-dependent memory # manager file. For DJGPP this is usually jmemnobs.o, but you could # use jmemname.o if you want to use named temp files instead of swap space. SYSDEPMEM= jmemnobs.o # miscellaneous OS-dependent stuff # linker LN= $(CC) # file deletion command RM= del # library (.a) file creation command AR= ar rc # second step in .a creation (use "touch" if not needed) AR2= ranlib # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.o jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.o jcapistd.o jcarith.o jctrans.o jcparam.o \ jdatadst.o jcinit.o jcmaster.o jcmarker.o jcmainct.o jcprepct.o \ jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o jfdctfst.o \ jfdctflt.o jfdctint.o # decompression library object files DLIBOBJECTS= jdapimin.o jdapistd.o jdarith.o jdtrans.o jdatasrc.o \ jdmaster.o jdinput.o jdmarker.o jdhuff.o jdmainct.o \ jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o \ jidctint.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o # These objectfiles are included in libjpeg.a LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ cdjpeg.o DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ cdjpeg.o TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o all: libjpeg.a cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe libjpeg.a: $(LIBOBJECTS) $(RM) libjpeg.a $(AR) libjpeg.a $(LIBOBJECTS) $(AR2) libjpeg.a cjpeg.exe: $(COBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o cjpeg.exe $(COBJECTS) libjpeg.a $(LDLIBS) djpeg.exe: $(DOBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o djpeg.exe $(DOBJECTS) libjpeg.a $(LDLIBS) jpegtran.exe: $(TROBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o jpegtran.exe $(TROBJECTS) libjpeg.a $(LDLIBS) rdjpgcom.exe: rdjpgcom.o $(LN) $(LDFLAGS) -o rdjpgcom.exe rdjpgcom.o $(LDLIBS) wrjpgcom.exe: wrjpgcom.o $(LN) $(LDFLAGS) -o wrjpgcom.exe wrjpgcom.o $(LDLIBS) jconfig.h: jconfig.txt echo You must prepare a system-dependent jconfig.h file. echo Please read the installation directions in install.txt. exit 1 clean: $(RM) *.o $(RM) cjpeg.exe $(RM) djpeg.exe $(RM) jpegtran.exe $(RM) rdjpgcom.exe $(RM) wrjpgcom.exe $(RM) libjpeg.a $(RM) testout*.* test: cjpeg.exe djpeg.exe jpegtran.exe $(RM) testout*.* ./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg ./cjpeg -dct int -outfile testout.jpg testimg.ppm ./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm ./jpegtran -outfile testoutt.jpg testprog.jpg fc /b testimg.ppm testout.ppm fc /b testimg.bmp testout.bmp fc /b testimg.jpg testout.jpg fc /b testimg.ppm testoutp.ppm fc /b testimgp.jpg testoutp.jpg fc /b testorig.jpg testoutt.jpg jaricom.o: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.o: jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdarith.o: jdarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jpeg-8d1/jquant1.c0000644000175000017500000007513711633106572012573 0ustar billbill/* * jquant1.c * * Copyright (C) 1991-1996, Thomas G. Lane. * Modified 2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains 1-pass color quantization (color mapping) routines. * These routines provide mapping to a fixed color map using equally spaced * color values. Optional Floyd-Steinberg or ordered dithering is available. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #ifdef QUANT_1PASS_SUPPORTED /* * The main purpose of 1-pass quantization is to provide a fast, if not very * high quality, colormapped output capability. A 2-pass quantizer usually * gives better visual quality; however, for quantized grayscale output this * quantizer is perfectly adequate. Dithering is highly recommended with this * quantizer, though you can turn it off if you really want to. * * In 1-pass quantization the colormap must be chosen in advance of seeing the * image. We use a map consisting of all combinations of Ncolors[i] color * values for the i'th component. The Ncolors[] values are chosen so that * their product, the total number of colors, is no more than that requested. * (In most cases, the product will be somewhat less.) * * Since the colormap is orthogonal, the representative value for each color * component can be determined without considering the other components; * then these indexes can be combined into a colormap index by a standard * N-dimensional-array-subscript calculation. Most of the arithmetic involved * can be precalculated and stored in the lookup table colorindex[]. * colorindex[i][j] maps pixel value j in component i to the nearest * representative value (grid plane) for that component; this index is * multiplied by the array stride for component i, so that the * index of the colormap entry closest to a given pixel value is just * sum( colorindex[component-number][pixel-component-value] ) * Aside from being fast, this scheme allows for variable spacing between * representative values with no additional lookup cost. * * If gamma correction has been applied in color conversion, it might be wise * to adjust the color grid spacing so that the representative colors are * equidistant in linear space. At this writing, gamma correction is not * implemented by jdcolor, so nothing is done here. */ /* Declarations for ordered dithering. * * We use a standard 16x16 ordered dither array. The basic concept of ordered * dithering is described in many references, for instance Dale Schumacher's * chapter II.2 of Graphics Gems II (James Arvo, ed. Academic Press, 1991). * In place of Schumacher's comparisons against a "threshold" value, we add a * "dither" value to the input pixel and then round the result to the nearest * output value. The dither value is equivalent to (0.5 - threshold) times * the distance between output values. For ordered dithering, we assume that * the output colors are equally spaced; if not, results will probably be * worse, since the dither may be too much or too little at a given point. * * The normal calculation would be to form pixel value + dither, range-limit * this to 0..MAXJSAMPLE, and then index into the colorindex table as usual. * We can skip the separate range-limiting step by extending the colorindex * table in both directions. */ #define ODITHER_SIZE 16 /* dimension of dither matrix */ /* NB: if ODITHER_SIZE is not a power of 2, ODITHER_MASK uses will break */ #define ODITHER_CELLS (ODITHER_SIZE*ODITHER_SIZE) /* # cells in matrix */ #define ODITHER_MASK (ODITHER_SIZE-1) /* mask for wrapping around counters */ typedef int ODITHER_MATRIX[ODITHER_SIZE][ODITHER_SIZE]; typedef int (*ODITHER_MATRIX_PTR)[ODITHER_SIZE]; static const UINT8 base_dither_matrix[ODITHER_SIZE][ODITHER_SIZE] = { /* Bayer's order-4 dither array. Generated by the code given in * Stephen Hawley's article "Ordered Dithering" in Graphics Gems I. * The values in this array must range from 0 to ODITHER_CELLS-1. */ { 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 }, { 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 }, { 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 }, { 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 }, { 8,200, 56,248, 4,196, 52,244, 11,203, 59,251, 7,199, 55,247 }, { 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 }, { 40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 }, { 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 }, { 2,194, 50,242, 14,206, 62,254, 1,193, 49,241, 13,205, 61,253 }, { 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 }, { 34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 }, { 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 }, { 10,202, 58,250, 6,198, 54,246, 9,201, 57,249, 5,197, 53,245 }, { 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 }, { 42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 }, { 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 } }; /* Declarations for Floyd-Steinberg dithering. * * Errors are accumulated into the array fserrors[], at a resolution of * 1/16th of a pixel count. The error at a given pixel is propagated * to its not-yet-processed neighbors using the standard F-S fractions, * ... (here) 7/16 * 3/16 5/16 1/16 * We work left-to-right on even rows, right-to-left on odd rows. * * We can get away with a single array (holding one row's worth of errors) * by using it to store the current row's errors at pixel columns not yet * processed, but the next row's errors at columns already processed. We * need only a few extra variables to hold the errors immediately around the * current column. (If we are lucky, those variables are in registers, but * even if not, they're probably cheaper to access than array elements are.) * * The fserrors[] array is indexed [component#][position]. * We provide (#columns + 2) entries per component; the extra entry at each * end saves us from special-casing the first and last pixels. * * Note: on a wide image, we might not have enough room in a PC's near data * segment to hold the error array; so it is allocated with alloc_large. */ #if BITS_IN_JSAMPLE == 8 typedef INT16 FSERROR; /* 16 bits should be enough */ typedef int LOCFSERROR; /* use 'int' for calculation temps */ #else typedef INT32 FSERROR; /* may need more than 16 bits */ typedef INT32 LOCFSERROR; /* be sure calculation temps are big enough */ #endif typedef FSERROR FAR *FSERRPTR; /* pointer to error array (in FAR storage!) */ /* Private subobject */ #define MAX_Q_COMPS 4 /* max components I can handle */ typedef struct { struct jpeg_color_quantizer pub; /* public fields */ /* Initially allocated colormap is saved here */ JSAMPARRAY sv_colormap; /* The color map as a 2-D pixel array */ int sv_actual; /* number of entries in use */ JSAMPARRAY colorindex; /* Precomputed mapping for speed */ /* colorindex[i][j] = index of color closest to pixel value j in component i, * premultiplied as described above. Since colormap indexes must fit into * JSAMPLEs, the entries of this array will too. */ boolean is_padded; /* is the colorindex padded for odither? */ int Ncolors[MAX_Q_COMPS]; /* # of values alloced to each component */ /* Variables for ordered dithering */ int row_index; /* cur row's vertical index in dither matrix */ ODITHER_MATRIX_PTR odither[MAX_Q_COMPS]; /* one dither array per component */ /* Variables for Floyd-Steinberg dithering */ FSERRPTR fserrors[MAX_Q_COMPS]; /* accumulated errors */ boolean on_odd_row; /* flag to remember which row we are on */ } my_cquantizer; typedef my_cquantizer * my_cquantize_ptr; /* * Policy-making subroutines for create_colormap and create_colorindex. * These routines determine the colormap to be used. The rest of the module * only assumes that the colormap is orthogonal. * * * select_ncolors decides how to divvy up the available colors * among the components. * * output_value defines the set of representative values for a component. * * largest_input_value defines the mapping from input values to * representative values for a component. * Note that the latter two routines may impose different policies for * different components, though this is not currently done. */ LOCAL(int) select_ncolors (j_decompress_ptr cinfo, int Ncolors[]) /* Determine allocation of desired colors to components, */ /* and fill in Ncolors[] array to indicate choice. */ /* Return value is total number of colors (product of Ncolors[] values). */ { int nc = cinfo->out_color_components; /* number of color components */ int max_colors = cinfo->desired_number_of_colors; int total_colors, iroot, i, j; boolean changed; long temp; static const int RGB_order[3] = { RGB_GREEN, RGB_RED, RGB_BLUE }; /* We can allocate at least the nc'th root of max_colors per component. */ /* Compute floor(nc'th root of max_colors). */ iroot = 1; do { iroot++; temp = iroot; /* set temp = iroot ** nc */ for (i = 1; i < nc; i++) temp *= iroot; } while (temp <= (long) max_colors); /* repeat till iroot exceeds root */ iroot--; /* now iroot = floor(root) */ /* Must have at least 2 color values per component */ if (iroot < 2) ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, (int) temp); /* Initialize to iroot color values for each component */ total_colors = 1; for (i = 0; i < nc; i++) { Ncolors[i] = iroot; total_colors *= iroot; } /* We may be able to increment the count for one or more components without * exceeding max_colors, though we know not all can be incremented. * Sometimes, the first component can be incremented more than once! * (Example: for 16 colors, we start at 2*2*2, go to 3*2*2, then 4*2*2.) * In RGB colorspace, try to increment G first, then R, then B. */ do { changed = FALSE; for (i = 0; i < nc; i++) { j = (cinfo->out_color_space == JCS_RGB ? RGB_order[i] : i); /* calculate new total_colors if Ncolors[j] is incremented */ temp = total_colors / Ncolors[j]; temp *= Ncolors[j]+1; /* done in long arith to avoid oflo */ if (temp > (long) max_colors) break; /* won't fit, done with this pass */ Ncolors[j]++; /* OK, apply the increment */ total_colors = (int) temp; changed = TRUE; } } while (changed); return total_colors; } LOCAL(int) output_value (j_decompress_ptr cinfo, int ci, int j, int maxj) /* Return j'th output value, where j will range from 0 to maxj */ /* The output values must fall in 0..MAXJSAMPLE in increasing order */ { /* We always provide values 0 and MAXJSAMPLE for each component; * any additional values are equally spaced between these limits. * (Forcing the upper and lower values to the limits ensures that * dithering can't produce a color outside the selected gamut.) */ return (int) (((INT32) j * MAXJSAMPLE + maxj/2) / maxj); } LOCAL(int) largest_input_value (j_decompress_ptr cinfo, int ci, int j, int maxj) /* Return largest input value that should map to j'th output value */ /* Must have largest(j=0) >= 0, and largest(j=maxj) >= MAXJSAMPLE */ { /* Breakpoints are halfway between values returned by output_value */ return (int) (((INT32) (2*j + 1) * MAXJSAMPLE + maxj) / (2*maxj)); } /* * Create the colormap. */ LOCAL(void) create_colormap (j_decompress_ptr cinfo) { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; JSAMPARRAY colormap; /* Created colormap */ int total_colors; /* Number of distinct output colors */ int i,j,k, nci, blksize, blkdist, ptr, val; /* Select number of colors for each component */ total_colors = select_ncolors(cinfo, cquantize->Ncolors); /* Report selected color counts */ if (cinfo->out_color_components == 3) TRACEMS4(cinfo, 1, JTRC_QUANT_3_NCOLORS, total_colors, cquantize->Ncolors[0], cquantize->Ncolors[1], cquantize->Ncolors[2]); else TRACEMS1(cinfo, 1, JTRC_QUANT_NCOLORS, total_colors); /* Allocate and fill in the colormap. */ /* The colors are ordered in the map in standard row-major order, */ /* i.e. rightmost (highest-indexed) color changes most rapidly. */ colormap = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) total_colors, (JDIMENSION) cinfo->out_color_components); /* blksize is number of adjacent repeated entries for a component */ /* blkdist is distance between groups of identical entries for a component */ blkdist = total_colors; for (i = 0; i < cinfo->out_color_components; i++) { /* fill in colormap entries for i'th color component */ nci = cquantize->Ncolors[i]; /* # of distinct values for this color */ blksize = blkdist / nci; for (j = 0; j < nci; j++) { /* Compute j'th output value (out of nci) for component */ val = output_value(cinfo, i, j, nci-1); /* Fill in all colormap entries that have this value of this component */ for (ptr = j * blksize; ptr < total_colors; ptr += blkdist) { /* fill in blksize entries beginning at ptr */ for (k = 0; k < blksize; k++) colormap[i][ptr+k] = (JSAMPLE) val; } } blkdist = blksize; /* blksize of this color is blkdist of next */ } /* Save the colormap in private storage, * where it will survive color quantization mode changes. */ cquantize->sv_colormap = colormap; cquantize->sv_actual = total_colors; } /* * Create the color index table. */ LOCAL(void) create_colorindex (j_decompress_ptr cinfo) { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; JSAMPROW indexptr; int i,j,k, nci, blksize, val, pad; /* For ordered dither, we pad the color index tables by MAXJSAMPLE in * each direction (input index values can be -MAXJSAMPLE .. 2*MAXJSAMPLE). * This is not necessary in the other dithering modes. However, we * flag whether it was done in case user changes dithering mode. */ if (cinfo->dither_mode == JDITHER_ORDERED) { pad = MAXJSAMPLE*2; cquantize->is_padded = TRUE; } else { pad = 0; cquantize->is_padded = FALSE; } cquantize->colorindex = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) (MAXJSAMPLE+1 + pad), (JDIMENSION) cinfo->out_color_components); /* blksize is number of adjacent repeated entries for a component */ blksize = cquantize->sv_actual; for (i = 0; i < cinfo->out_color_components; i++) { /* fill in colorindex entries for i'th color component */ nci = cquantize->Ncolors[i]; /* # of distinct values for this color */ blksize = blksize / nci; /* adjust colorindex pointers to provide padding at negative indexes. */ if (pad) cquantize->colorindex[i] += MAXJSAMPLE; /* in loop, val = index of current output value, */ /* and k = largest j that maps to current val */ indexptr = cquantize->colorindex[i]; val = 0; k = largest_input_value(cinfo, i, 0, nci-1); for (j = 0; j <= MAXJSAMPLE; j++) { while (j > k) /* advance val if past boundary */ k = largest_input_value(cinfo, i, ++val, nci-1); /* premultiply so that no multiplication needed in main processing */ indexptr[j] = (JSAMPLE) (val * blksize); } /* Pad at both ends if necessary */ if (pad) for (j = 1; j <= MAXJSAMPLE; j++) { indexptr[-j] = indexptr[0]; indexptr[MAXJSAMPLE+j] = indexptr[MAXJSAMPLE]; } } } /* * Create an ordered-dither array for a component having ncolors * distinct output values. */ LOCAL(ODITHER_MATRIX_PTR) make_odither_array (j_decompress_ptr cinfo, int ncolors) { ODITHER_MATRIX_PTR odither; int j,k; INT32 num,den; odither = (ODITHER_MATRIX_PTR) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(ODITHER_MATRIX)); /* The inter-value distance for this color is MAXJSAMPLE/(ncolors-1). * Hence the dither value for the matrix cell with fill order f * (f=0..N-1) should be (N-1-2*f)/(2*N) * MAXJSAMPLE/(ncolors-1). * On 16-bit-int machine, be careful to avoid overflow. */ den = 2 * ODITHER_CELLS * ((INT32) (ncolors - 1)); for (j = 0; j < ODITHER_SIZE; j++) { for (k = 0; k < ODITHER_SIZE; k++) { num = ((INT32) (ODITHER_CELLS-1 - 2*((int)base_dither_matrix[j][k]))) * MAXJSAMPLE; /* Ensure round towards zero despite C's lack of consistency * about rounding negative values in integer division... */ odither[j][k] = (int) (num<0 ? -((-num)/den) : num/den); } } return odither; } /* * Create the ordered-dither tables. * Components having the same number of representative colors may * share a dither table. */ LOCAL(void) create_odither_tables (j_decompress_ptr cinfo) { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; ODITHER_MATRIX_PTR odither; int i, j, nci; for (i = 0; i < cinfo->out_color_components; i++) { nci = cquantize->Ncolors[i]; /* # of distinct values for this color */ odither = NULL; /* search for matching prior component */ for (j = 0; j < i; j++) { if (nci == cquantize->Ncolors[j]) { odither = cquantize->odither[j]; break; } } if (odither == NULL) /* need a new table? */ odither = make_odither_array(cinfo, nci); cquantize->odither[i] = odither; } } /* * Map some rows of pixels to the output colormapped representation. */ METHODDEF(void) color_quantize (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) /* General case, no dithering */ { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; JSAMPARRAY colorindex = cquantize->colorindex; register int pixcode, ci; register JSAMPROW ptrin, ptrout; int row; JDIMENSION col; JDIMENSION width = cinfo->output_width; register int nc = cinfo->out_color_components; for (row = 0; row < num_rows; row++) { ptrin = input_buf[row]; ptrout = output_buf[row]; for (col = width; col > 0; col--) { pixcode = 0; for (ci = 0; ci < nc; ci++) { pixcode += GETJSAMPLE(colorindex[ci][GETJSAMPLE(*ptrin++)]); } *ptrout++ = (JSAMPLE) pixcode; } } } METHODDEF(void) color_quantize3 (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) /* Fast path for out_color_components==3, no dithering */ { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; register int pixcode; register JSAMPROW ptrin, ptrout; JSAMPROW colorindex0 = cquantize->colorindex[0]; JSAMPROW colorindex1 = cquantize->colorindex[1]; JSAMPROW colorindex2 = cquantize->colorindex[2]; int row; JDIMENSION col; JDIMENSION width = cinfo->output_width; for (row = 0; row < num_rows; row++) { ptrin = input_buf[row]; ptrout = output_buf[row]; for (col = width; col > 0; col--) { pixcode = GETJSAMPLE(colorindex0[GETJSAMPLE(*ptrin++)]); pixcode += GETJSAMPLE(colorindex1[GETJSAMPLE(*ptrin++)]); pixcode += GETJSAMPLE(colorindex2[GETJSAMPLE(*ptrin++)]); *ptrout++ = (JSAMPLE) pixcode; } } } METHODDEF(void) quantize_ord_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) /* General case, with ordered dithering */ { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; register JSAMPROW input_ptr; register JSAMPROW output_ptr; JSAMPROW colorindex_ci; int * dither; /* points to active row of dither matrix */ int row_index, col_index; /* current indexes into dither matrix */ int nc = cinfo->out_color_components; int ci; int row; JDIMENSION col; JDIMENSION width = cinfo->output_width; for (row = 0; row < num_rows; row++) { /* Initialize output values to 0 so can process components separately */ FMEMZERO((void FAR *) output_buf[row], (size_t) (width * SIZEOF(JSAMPLE))); row_index = cquantize->row_index; for (ci = 0; ci < nc; ci++) { input_ptr = input_buf[row] + ci; output_ptr = output_buf[row]; colorindex_ci = cquantize->colorindex[ci]; dither = cquantize->odither[ci][row_index]; col_index = 0; for (col = width; col > 0; col--) { /* Form pixel value + dither, range-limit to 0..MAXJSAMPLE, * select output value, accumulate into output code for this pixel. * Range-limiting need not be done explicitly, as we have extended * the colorindex table to produce the right answers for out-of-range * inputs. The maximum dither is +- MAXJSAMPLE; this sets the * required amount of padding. */ *output_ptr += colorindex_ci[GETJSAMPLE(*input_ptr)+dither[col_index]]; input_ptr += nc; output_ptr++; col_index = (col_index + 1) & ODITHER_MASK; } } /* Advance row index for next row */ row_index = (row_index + 1) & ODITHER_MASK; cquantize->row_index = row_index; } } METHODDEF(void) quantize3_ord_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) /* Fast path for out_color_components==3, with ordered dithering */ { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; register int pixcode; register JSAMPROW input_ptr; register JSAMPROW output_ptr; JSAMPROW colorindex0 = cquantize->colorindex[0]; JSAMPROW colorindex1 = cquantize->colorindex[1]; JSAMPROW colorindex2 = cquantize->colorindex[2]; int * dither0; /* points to active row of dither matrix */ int * dither1; int * dither2; int row_index, col_index; /* current indexes into dither matrix */ int row; JDIMENSION col; JDIMENSION width = cinfo->output_width; for (row = 0; row < num_rows; row++) { row_index = cquantize->row_index; input_ptr = input_buf[row]; output_ptr = output_buf[row]; dither0 = cquantize->odither[0][row_index]; dither1 = cquantize->odither[1][row_index]; dither2 = cquantize->odither[2][row_index]; col_index = 0; for (col = width; col > 0; col--) { pixcode = GETJSAMPLE(colorindex0[GETJSAMPLE(*input_ptr++) + dither0[col_index]]); pixcode += GETJSAMPLE(colorindex1[GETJSAMPLE(*input_ptr++) + dither1[col_index]]); pixcode += GETJSAMPLE(colorindex2[GETJSAMPLE(*input_ptr++) + dither2[col_index]]); *output_ptr++ = (JSAMPLE) pixcode; col_index = (col_index + 1) & ODITHER_MASK; } row_index = (row_index + 1) & ODITHER_MASK; cquantize->row_index = row_index; } } METHODDEF(void) quantize_fs_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) /* General case, with Floyd-Steinberg dithering */ { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; register LOCFSERROR cur; /* current error or pixel value */ LOCFSERROR belowerr; /* error for pixel below cur */ LOCFSERROR bpreverr; /* error for below/prev col */ LOCFSERROR bnexterr; /* error for below/next col */ LOCFSERROR delta; register FSERRPTR errorptr; /* => fserrors[] at column before current */ register JSAMPROW input_ptr; register JSAMPROW output_ptr; JSAMPROW colorindex_ci; JSAMPROW colormap_ci; int pixcode; int nc = cinfo->out_color_components; int dir; /* 1 for left-to-right, -1 for right-to-left */ int dirnc; /* dir * nc */ int ci; int row; JDIMENSION col; JDIMENSION width = cinfo->output_width; JSAMPLE *range_limit = cinfo->sample_range_limit; SHIFT_TEMPS for (row = 0; row < num_rows; row++) { /* Initialize output values to 0 so can process components separately */ FMEMZERO((void FAR *) output_buf[row], (size_t) (width * SIZEOF(JSAMPLE))); for (ci = 0; ci < nc; ci++) { input_ptr = input_buf[row] + ci; output_ptr = output_buf[row]; if (cquantize->on_odd_row) { /* work right to left in this row */ input_ptr += (width-1) * nc; /* so point to rightmost pixel */ output_ptr += width-1; dir = -1; dirnc = -nc; errorptr = cquantize->fserrors[ci] + (width+1); /* => entry after last column */ } else { /* work left to right in this row */ dir = 1; dirnc = nc; errorptr = cquantize->fserrors[ci]; /* => entry before first column */ } colorindex_ci = cquantize->colorindex[ci]; colormap_ci = cquantize->sv_colormap[ci]; /* Preset error values: no error propagated to first pixel from left */ cur = 0; /* and no error propagated to row below yet */ belowerr = bpreverr = 0; for (col = width; col > 0; col--) { /* cur holds the error propagated from the previous pixel on the * current line. Add the error propagated from the previous line * to form the complete error correction term for this pixel, and * round the error term (which is expressed * 16) to an integer. * RIGHT_SHIFT rounds towards minus infinity, so adding 8 is correct * for either sign of the error value. * Note: errorptr points to *previous* column's array entry. */ cur = RIGHT_SHIFT(cur + errorptr[dir] + 8, 4); /* Form pixel value + error, and range-limit to 0..MAXJSAMPLE. * The maximum error is +- MAXJSAMPLE; this sets the required size * of the range_limit array. */ cur += GETJSAMPLE(*input_ptr); cur = GETJSAMPLE(range_limit[cur]); /* Select output value, accumulate into output code for this pixel */ pixcode = GETJSAMPLE(colorindex_ci[cur]); *output_ptr += (JSAMPLE) pixcode; /* Compute actual representation error at this pixel */ /* Note: we can do this even though we don't have the final */ /* pixel code, because the colormap is orthogonal. */ cur -= GETJSAMPLE(colormap_ci[pixcode]); /* Compute error fractions to be propagated to adjacent pixels. * Add these into the running sums, and simultaneously shift the * next-line error sums left by 1 column. */ bnexterr = cur; delta = cur * 2; cur += delta; /* form error * 3 */ errorptr[0] = (FSERROR) (bpreverr + cur); cur += delta; /* form error * 5 */ bpreverr = belowerr + cur; belowerr = bnexterr; cur += delta; /* form error * 7 */ /* At this point cur contains the 7/16 error value to be propagated * to the next pixel on the current line, and all the errors for the * next line have been shifted over. We are therefore ready to move on. */ input_ptr += dirnc; /* advance input ptr to next column */ output_ptr += dir; /* advance output ptr to next column */ errorptr += dir; /* advance errorptr to current column */ } /* Post-loop cleanup: we must unload the final error value into the * final fserrors[] entry. Note we need not unload belowerr because * it is for the dummy column before or after the actual array. */ errorptr[0] = (FSERROR) bpreverr; /* unload prev err into array */ } cquantize->on_odd_row = (cquantize->on_odd_row ? FALSE : TRUE); } } /* * Allocate workspace for Floyd-Steinberg errors. */ LOCAL(void) alloc_fs_workspace (j_decompress_ptr cinfo) { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; size_t arraysize; int i; arraysize = (size_t) ((cinfo->output_width + 2) * SIZEOF(FSERROR)); for (i = 0; i < cinfo->out_color_components; i++) { cquantize->fserrors[i] = (FSERRPTR) (*cinfo->mem->alloc_large)((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize); } } /* * Initialize for one-pass color quantization. */ METHODDEF(void) start_pass_1_quant (j_decompress_ptr cinfo, boolean is_pre_scan) { my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; size_t arraysize; int i; /* Install my colormap. */ cinfo->colormap = cquantize->sv_colormap; cinfo->actual_number_of_colors = cquantize->sv_actual; /* Initialize for desired dithering mode. */ switch (cinfo->dither_mode) { case JDITHER_NONE: if (cinfo->out_color_components == 3) cquantize->pub.color_quantize = color_quantize3; else cquantize->pub.color_quantize = color_quantize; break; case JDITHER_ORDERED: if (cinfo->out_color_components == 3) cquantize->pub.color_quantize = quantize3_ord_dither; else cquantize->pub.color_quantize = quantize_ord_dither; cquantize->row_index = 0; /* initialize state for ordered dither */ /* If user changed to ordered dither from another mode, * we must recreate the color index table with padding. * This will cost extra space, but probably isn't very likely. */ if (! cquantize->is_padded) create_colorindex(cinfo); /* Create ordered-dither tables if we didn't already. */ if (cquantize->odither[0] == NULL) create_odither_tables(cinfo); break; case JDITHER_FS: cquantize->pub.color_quantize = quantize_fs_dither; cquantize->on_odd_row = FALSE; /* initialize state for F-S dither */ /* Allocate Floyd-Steinberg workspace if didn't already. */ if (cquantize->fserrors[0] == NULL) alloc_fs_workspace(cinfo); /* Initialize the propagated errors to zero. */ arraysize = (size_t) ((cinfo->output_width + 2) * SIZEOF(FSERROR)); for (i = 0; i < cinfo->out_color_components; i++) FMEMZERO((void FAR *) cquantize->fserrors[i], arraysize); break; default: ERREXIT(cinfo, JERR_NOT_COMPILED); break; } } /* * Finish up at the end of the pass. */ METHODDEF(void) finish_pass_1_quant (j_decompress_ptr cinfo) { /* no work in 1-pass case */ } /* * Switch to a new external colormap between output passes. * Shouldn't get to this module! */ METHODDEF(void) new_color_map_1_quant (j_decompress_ptr cinfo) { ERREXIT(cinfo, JERR_MODE_CHANGE); } /* * Module initialization routine for 1-pass color quantization. */ GLOBAL(void) jinit_1pass_quantizer (j_decompress_ptr cinfo) { my_cquantize_ptr cquantize; cquantize = (my_cquantize_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_cquantizer)); cinfo->cquantize = (struct jpeg_color_quantizer *) cquantize; cquantize->pub.start_pass = start_pass_1_quant; cquantize->pub.finish_pass = finish_pass_1_quant; cquantize->pub.new_color_map = new_color_map_1_quant; cquantize->fserrors[0] = NULL; /* Flag FS workspace not allocated */ cquantize->odither[0] = NULL; /* Also flag odither arrays not allocated */ /* Make sure my internal arrays won't overflow */ if (cinfo->out_color_components > MAX_Q_COMPS) ERREXIT1(cinfo, JERR_QUANT_COMPONENTS, MAX_Q_COMPS); /* Make sure colormap indexes can be represented by JSAMPLEs */ if (cinfo->desired_number_of_colors > (MAXJSAMPLE+1)) ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXJSAMPLE+1); /* Create the colormap and color index table. */ create_colormap(cinfo); create_colorindex(cinfo); /* Allocate Floyd-Steinberg workspace now if requested. * We do this now since it is FAR storage and may affect the memory * manager's space calculations. If the user changes to FS dither * mode in a later pass, we will allocate the space then, and will * possibly overrun the max_memory_to_use setting. */ if (cinfo->dither_mode == JDITHER_FS) alloc_fs_workspace(cinfo); } #endif /* QUANT_1PASS_SUPPORTED */ jpeg-8d1/makcjpeg.st0000644000175000017500000000321211165463674013167 0ustar billbill; Project file for Independent JPEG Group's software ; ; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C. ; Thanks to Frank Moehle, B. Setzepfandt, and Guido Vollbeding. ; ; To use this file, rename it to cjpeg.prj. ; If you are using Turbo C, change filenames beginning with "pc..." to "tc..." ; Read installation instructions before trying to make the program! ; ; ; * * * Output file * * * cjpeg.ttp ; ; * * * COMPILER OPTIONS * * * .C[-P] ; absolute calls .C[-M] ; and no string merging, folks .C[-w-cln] ; no "constant is long" warnings .C[-w-par] ; no "parameter xxxx unused" .C[-w-rch] ; no "unreachable code" .C[-wsig] ; warn if significant digits may be lost = ; * * * * List of modules * * * * pcstart.o cjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h) cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdswitch.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdppm.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdgif.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdtarga.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdbmp.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdrle.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) libjpeg.lib ; built by libjpeg.prj pcfltlib.lib ; floating point library ; the float library can be omitted if you've turned off DCT_FLOAT_SUPPORTED pcstdlib.lib ; standard library pcextlib.lib ; extended library jpeg-8d1/makedmak.vc60000644000175000017500000000631511174127244013225 0ustar billbill# Microsoft Developer Studio Generated NMAKE File, Based on djpeg.dsp !IF "$(CFG)" == "" CFG=djpeg - Win32 !MESSAGE Keine Konfiguration angegeben. djpeg - Win32 wird als Standard verwendet. !ENDIF !IF "$(CFG)" != "djpeg - Win32" !MESSAGE Ungltige Konfiguration "$(CFG)" angegeben. !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "djpeg.mak" CFG="djpeg - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "djpeg - Win32" (basierend auf "Win32 (x86) Console Application") !MESSAGE !ERROR Eine ungltige Konfiguration wurde angegeben. !ENDIF !IF "$(OS)" == "Windows_NT" NULL= !ELSE NULL=nul !ENDIF CPP=cl.exe RSC=rc.exe OUTDIR=.\djpeg\Release INTDIR=.\djpeg\Release # Begin Custom Macros OutDir=.\djpeg\Release # End Custom Macros ALL : "$(OUTDIR)\djpeg.exe" CLEAN : -@erase "$(INTDIR)\cdjpeg.obj" -@erase "$(INTDIR)\djpeg.obj" -@erase "$(INTDIR)\rdcolmap.obj" -@erase "$(INTDIR)\vc60.idb" -@erase "$(INTDIR)\wrbmp.obj" -@erase "$(INTDIR)\wrgif.obj" -@erase "$(INTDIR)\wrppm.obj" -@erase "$(INTDIR)\wrrle.obj" -@erase "$(INTDIR)\wrtarga.obj" -@erase "$(OUTDIR)\djpeg.exe" "$(OUTDIR)" : if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)" BSC32=bscmake.exe BSC32_FLAGS=/nologo /o"$(OUTDIR)\djpeg.bsc" BSC32_SBRS= \ LINK32=link.exe LINK32_FLAGS=Release\jpeg.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\djpeg.pdb" /machine:I386 /out:"$(OUTDIR)\djpeg.exe" LINK32_OBJS= \ "$(INTDIR)\cdjpeg.obj" \ "$(INTDIR)\djpeg.obj" \ "$(INTDIR)\rdcolmap.obj" \ "$(INTDIR)\wrbmp.obj" \ "$(INTDIR)\wrgif.obj" \ "$(INTDIR)\wrppm.obj" \ "$(INTDIR)\wrrle.obj" \ "$(INTDIR)\wrtarga.obj" "$(OUTDIR)\djpeg.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS) $(LINK32) @<< $(LINK32_FLAGS) $(LINK32_OBJS) << CPP_PROJ=/nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /Fp"$(INTDIR)\djpeg.pch" /YX /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c .c{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .cpp{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .cxx{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .c{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << .cpp{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << .cxx{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << !IF "$(NO_EXTERNAL_DEPS)" != "1" !IF EXISTS("djpeg.dep") !INCLUDE "djpeg.dep" !ELSE !MESSAGE Warning: cannot find "djpeg.dep" !ENDIF !ENDIF !IF "$(CFG)" == "djpeg - Win32" SOURCE=.\cdjpeg.c "$(INTDIR)\cdjpeg.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\djpeg.c "$(INTDIR)\djpeg.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\rdcolmap.c "$(INTDIR)\rdcolmap.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\wrbmp.c "$(INTDIR)\wrbmp.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\wrgif.c "$(INTDIR)\wrgif.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\wrppm.c "$(INTDIR)\wrppm.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\wrrle.c "$(INTDIR)\wrrle.obj" : $(SOURCE) "$(INTDIR)" SOURCE=.\wrtarga.c "$(INTDIR)\wrtarga.obj" : $(SOURCE) "$(INTDIR)" !ENDIF jpeg-8d1/README0000644000175000017500000004152411704513404011710 0ustar billbillThe Independent JPEG Group's JPEG software ========================================== README for release 8d of 15-Jan-2012 ==================================== This distribution contains the eighth public release of the Independent JPEG Group's free JPEG software. You are welcome to redistribute this software and to use it for any purpose, subject to the conditions under LEGAL ISSUES, below. This software is the work of Tom Lane, Guido Vollbeding, Philip Gladstone, Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers, and other members of the Independent JPEG Group. IJG is not affiliated with the ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together with ITU-T SG16). DOCUMENTATION ROADMAP ===================== This file contains the following sections: OVERVIEW General description of JPEG and the IJG software. LEGAL ISSUES Copyright, lack of warranty, terms of distribution. REFERENCES Where to learn more about JPEG. ARCHIVE LOCATIONS Where to find newer versions of this software. ACKNOWLEDGMENTS Special thanks. FILE FORMAT WARS Software *not* to get. TO DO Plans for future IJG releases. Other documentation files in the distribution are: User documentation: install.txt How to configure and install the IJG software. usage.txt Usage instructions for cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom. *.1 Unix-style man pages for programs (same info as usage.txt). wizard.txt Advanced usage instructions for JPEG wizards only. change.log Version-to-version change highlights. Programmer and internal documentation: libjpeg.txt How to use the JPEG library in your own programs. example.c Sample code for calling the JPEG library. structure.txt Overview of the JPEG library's internal structure. filelist.txt Road map of IJG files. coderules.txt Coding style rules --- please read if you contribute code. Please read at least the files install.txt and usage.txt. Some information can also be found in the JPEG FAQ (Frequently Asked Questions) article. See ARCHIVE LOCATIONS below to find out where to obtain the FAQ article. If you want to understand how the JPEG code works, we suggest reading one or more of the REFERENCES, then looking at the documentation files (in roughly the order listed) before diving into the code. OVERVIEW ======== This package contains C software to implement JPEG image encoding, decoding, and transcoding. JPEG (pronounced "jay-peg") is a standardized compression method for full-color and gray-scale images. This software implements JPEG baseline, extended-sequential, and progressive compression processes. Provision is made for supporting all variants of these processes, although some uncommon parameter settings aren't implemented yet. We have made no provision for supporting the hierarchical or lossless processes defined in the standard. We provide a set of library routines for reading and writing JPEG image files, plus two sample applications "cjpeg" and "djpeg", which use the library to perform conversion between JPEG and some other popular image file formats. The library is intended to be reused in other applications. In order to support file conversion and viewing software, we have included considerable functionality beyond the bare JPEG coding/decoding capability; for example, the color quantization modules are not strictly part of JPEG decoding, but they are essential for output to colormapped file formats or colormapped displays. These extra functions can be compiled out of the library if not required for a particular application. We have also included "jpegtran", a utility for lossless transcoding between different JPEG processes, and "rdjpgcom" and "wrjpgcom", two simple applications for inserting and extracting textual comments in JFIF files. The emphasis in designing this software has been on achieving portability and flexibility, while also making it fast enough to be useful. In particular, the software is not intended to be read as a tutorial on JPEG. (See the REFERENCES section for introductory material.) Rather, it is intended to be reliable, portable, industrial-strength code. We do not claim to have achieved that goal in every aspect of the software, but we strive for it. We welcome the use of this software as a component of commercial products. No royalty is required, but we do ask for an acknowledgement in product documentation, as described under LEGAL ISSUES. LEGAL ISSUES ============ In plain English: 1. We don't promise that this software works. (But if you find any bugs, please let us know!) 2. You can use this software for whatever you want. You don't have to pay us. 3. You may not pretend that you wrote this software. If you use it in a program, you must acknowledge somewhere in your documentation that you've used the IJG code. In legalese: The authors make NO WARRANTY or representation, either express or implied, with respect to this software, its quality, accuracy, merchantability, or fitness for a particular purpose. This software is provided "AS IS", and you, its user, assume the entire risk as to its quality and accuracy. This software is copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding. All Rights Reserved except as specified below. Permission is hereby granted to use, copy, modify, and distribute this software (or portions thereof) for any purpose, without fee, subject to these conditions: (1) If any part of the source code for this software is distributed, then this README file must be included, with this copyright and no-warranty notice unaltered; and any additions, deletions, or changes to the original files must be clearly indicated in accompanying documentation. (2) If only executable code is distributed, then the accompanying documentation must state that "this software is based in part on the work of the Independent JPEG Group". (3) Permission for use of this software is granted only if the user accepts full responsibility for any undesirable consequences; the authors accept NO LIABILITY for damages of any kind. These conditions apply to any software derived from or based on the IJG code, not just to the unmodified library. If you use our work, you ought to acknowledge us. Permission is NOT granted for the use of any IJG author's name or company name in advertising or publicity relating to this software or products derived from it. This software may be referred to only as "the Independent JPEG Group's software". We specifically permit and encourage the use of this software as the basis of commercial products, provided that all warranty or liability claims are assumed by the product vendor. ansi2knr.c is included in this distribution by permission of L. Peter Deutsch, sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA. ansi2knr.c is NOT covered by the above copyright and conditions, but instead by the usual distribution terms of the Free Software Foundation; principally, that you must include source code if you redistribute it. (See the file ansi2knr.c for full details.) However, since ansi2knr.c is not needed as part of any program generated from the IJG code, this does not limit you more than the foregoing paragraphs do. The Unix configuration script "configure" was produced with GNU Autoconf. It is copyright by the Free Software Foundation but is freely distributable. The same holds for its supporting scripts (config.guess, config.sub, ltmain.sh). Another support script, install-sh, is copyright by X Consortium but is also freely distributable. The IJG distribution formerly included code to read and write GIF files. To avoid entanglement with the Unisys LZW patent, GIF reading support has been removed altogether, and the GIF writer has been simplified to produce "uncompressed GIFs". This technique does not use the LZW algorithm; the resulting GIF files are larger than usual, but are readable by all standard GIF decoders. We are required to state that "The Graphics Interchange Format(c) is the Copyright property of CompuServe Incorporated. GIF(sm) is a Service Mark property of CompuServe Incorporated." REFERENCES ========== We recommend reading one or more of these references before trying to understand the innards of the JPEG software. The best short technical introduction to the JPEG compression algorithm is Wallace, Gregory K. "The JPEG Still Picture Compression Standard", Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44. (Adjacent articles in that issue discuss MPEG motion picture compression, applications of JPEG, and related topics.) If you don't have the CACM issue handy, a PostScript file containing a revised version of Wallace's article is available at http://www.ijg.org/files/wallace.ps.gz. The file (actually a preprint for an article that appeared in IEEE Trans. Consumer Electronics) omits the sample images that appeared in CACM, but it includes corrections and some added material. Note: the Wallace article is copyright ACM and IEEE, and it may not be used for commercial purposes. A somewhat less technical, more leisurely introduction to JPEG can be found in "The Data Compression Book" by Mark Nelson and Jean-loup Gailly, published by M&T Books (New York), 2nd ed. 1996, ISBN 1-55851-434-1. This book provides good explanations and example C code for a multitude of compression methods including JPEG. It is an excellent source if you are comfortable reading C code but don't know much about data compression in general. The book's JPEG sample code is far from industrial-strength, but when you are ready to look at a full implementation, you've got one here... The best currently available description of JPEG is the textbook "JPEG Still Image Data Compression Standard" by William B. Pennebaker and Joan L. Mitchell, published by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1. Price US$59.95, 638 pp. The book includes the complete text of the ISO JPEG standards (DIS 10918-1 and draft DIS 10918-2). Although this is by far the most detailed and comprehensive exposition of JPEG publicly available, we point out that it is still missing an explanation of the most essential properties and algorithms of the underlying DCT technology. If you think that you know about DCT-based JPEG after reading this book, then you are in delusion. The real fundamentals and corresponding potential of DCT-based JPEG are not publicly known so far, and that is the reason for all the mistaken developments taking place in the image coding domain. The original JPEG standard is divided into two parts, Part 1 being the actual specification, while Part 2 covers compliance testing methods. Part 1 is titled "Digital Compression and Coding of Continuous-tone Still Images, Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS 10918-1, ITU-T T.81. Part 2 is titled "Digital Compression and Coding of Continuous-tone Still Images, Part 2: Compliance testing" and has document numbers ISO/IEC IS 10918-2, ITU-T T.83. IJG JPEG 8 introduces an implementation of the JPEG SmartScale extension which is specified in two documents: A contributed document at ITU and ISO with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced Image Coding", April 2006, Geneva, Switzerland. The latest version of this document is Revision 3. And a contributed document ISO/IEC JTC1/SC29/WG1 N 5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany. The JPEG standard does not specify all details of an interchangeable file format. For the omitted details we follow the "JFIF" conventions, revision 1.02. JFIF 1.02 has been adopted as an Ecma International Technical Report and thus received a formal publication status. It is available as a free download in PDF format from http://www.ecma-international.org/publications/techreports/E-TR-098.htm. A PostScript version of the JFIF document is available at http://www.ijg.org/files/jfif.ps.gz. There is also a plain text version at http://www.ijg.org/files/jfif.txt.gz, but it is missing the figures. The TIFF 6.0 file format specification can be obtained by FTP from ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz. The JPEG incorporation scheme found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems. IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6). Instead, we recommend the JPEG design proposed by TIFF Technical Note #2 (Compression tag 7). Copies of this Note can be obtained from http://www.ijg.org/files/. It is expected that the next revision of the TIFF spec will replace the 6.0 JPEG design with the Note's design. Although IJG's own code does not support TIFF/JPEG, the free libtiff library uses our library to implement TIFF/JPEG per the Note. ARCHIVE LOCATIONS ================= The "official" archive site for this software is www.ijg.org. The most recent released version can always be found there in directory "files". This particular version will be archived as http://www.ijg.org/files/jpegsrc.v8d.tar.gz, and in Windows-compatible "zip" archive format as http://www.ijg.org/files/jpegsr8d.zip. The JPEG FAQ (Frequently Asked Questions) article is a source of some general information about JPEG. It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/ and other news.answers archive sites, including the official news.answers archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/. If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu with body send usenet/news.answers/jpeg-faq/part1 send usenet/news.answers/jpeg-faq/part2 ACKNOWLEDGMENTS =============== Thank to Juergen Bruder for providing me with a copy of the common DCT algorithm article, only to find out that I had come to the same result in a more direct and comprehensible way with a more generative approach. Thank to Istvan Sebestyen and Joan L. Mitchell for inviting me to the ITU JPEG (Study Group 16) meeting in Geneva, Switzerland. Thank to Thomas Wiegand and Gary Sullivan for inviting me to the Joint Video Team (MPEG & ITU) meeting in Geneva, Switzerland. Thank to Thomas Richter and Daniel Lee for inviting me to the ISO/IEC JTC1/SC29/WG1 (also known as JPEG, together with ITU-T SG16) meeting in Berlin, Germany. Thank to John Korejwa and Massimo Ballerini for inviting me to fruitful consultations in Boston, MA and Milan, Italy. Thank to Hendrik Elstner, Roland Fassauer, Simone Zuck, Guenther Maier-Gerber, Walter Stoeber, Fred Schmitz, and Norbert Braunagel for corresponding business development. Thank to Nico Zschach and Dirk Stelling of the technical support team at the Digital Images company in Halle for providing me with extra equipment for configuration tests. Thank to Richard F. Lyon (then of Foveon Inc.) for fruitful communication about JPEG configuration in Sigma Photo Pro software. Thank to Andrew Finkenstadt for hosting the ijg.org site. Last but not least special thank to Thomas G. Lane for the original design and development of this singular software package. FILE FORMAT WARS ================ The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together with ITU-T SG16) currently promotes different formats containing the name "JPEG" which is misleading because these formats are incompatible with original DCT-based JPEG and are based on faulty technologies. IJG therefore does not and will not support such momentary mistakes (see REFERENCES). There exist also distributions under the name "OpenJPEG" promoting such kind of formats which is misleading because they don't support original JPEG images. We have no sympathy for the promotion of inferior formats. Indeed, one of the original reasons for developing this free software was to help force convergence on common, interoperable format standards for JPEG files. Don't use an incompatible file format! (In any case, our decoder will remain capable of reading existing JPEG image files indefinitely.) Furthermore, the ISO committee pretends to be "responsible for the popular JPEG" in their public reports which is not true because they don't respond to actual requirements for the maintenance of the original JPEG specification. There are currently distributions in circulation containing the name "libjpeg" which claim to be a "derivative" or "fork" of the original libjpeg, but don't have the features and are incompatible with formats supported by actual IJG libjpeg distributions. Furthermore, they violate the license conditions as described under LEGAL ISSUES above. We have no sympathy for the release of misleading and illegal distributions derived from obsolete code bases. Don't use an obsolete code base! TO DO ===== Version 8 is the first release of a new generation JPEG standard to overcome the limitations of the original JPEG specification. More features are being prepared for coming releases... Please send bug reports, offers of help, etc. to jpeg-info@jpegclub.org. jpeg-8d1/jdmainct.c0000644000175000017500000004767007436234760013011 0ustar billbill/* * jdmainct.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains the main buffer controller for decompression. * The main buffer lies between the JPEG decompressor proper and the * post-processor; it holds downsampled data in the JPEG colorspace. * * Note that this code is bypassed in raw-data mode, since the application * supplies the equivalent of the main buffer in that case. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * In the current system design, the main buffer need never be a full-image * buffer; any full-height buffers will be found inside the coefficient or * postprocessing controllers. Nonetheless, the main controller is not * trivial. Its responsibility is to provide context rows for upsampling/ * rescaling, and doing this in an efficient fashion is a bit tricky. * * Postprocessor input data is counted in "row groups". A row group * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size) * sample rows of each component. (We require DCT_scaled_size values to be * chosen such that these numbers are integers. In practice DCT_scaled_size * values will likely be powers of two, so we actually have the stronger * condition that DCT_scaled_size / min_DCT_scaled_size is an integer.) * Upsampling will typically produce max_v_samp_factor pixel rows from each * row group (times any additional scale factor that the upsampler is * applying). * * The coefficient controller will deliver data to us one iMCU row at a time; * each iMCU row contains v_samp_factor * DCT_scaled_size sample rows, or * exactly min_DCT_scaled_size row groups. (This amount of data corresponds * to one row of MCUs when the image is fully interleaved.) Note that the * number of sample rows varies across components, but the number of row * groups does not. Some garbage sample rows may be included in the last iMCU * row at the bottom of the image. * * Depending on the vertical scaling algorithm used, the upsampler may need * access to the sample row(s) above and below its current input row group. * The upsampler is required to set need_context_rows TRUE at global selection * time if so. When need_context_rows is FALSE, this controller can simply * obtain one iMCU row at a time from the coefficient controller and dole it * out as row groups to the postprocessor. * * When need_context_rows is TRUE, this controller guarantees that the buffer * passed to postprocessing contains at least one row group's worth of samples * above and below the row group(s) being processed. Note that the context * rows "above" the first passed row group appear at negative row offsets in * the passed buffer. At the top and bottom of the image, the required * context rows are manufactured by duplicating the first or last real sample * row; this avoids having special cases in the upsampling inner loops. * * The amount of context is fixed at one row group just because that's a * convenient number for this controller to work with. The existing * upsamplers really only need one sample row of context. An upsampler * supporting arbitrary output rescaling might wish for more than one row * group of context when shrinking the image; tough, we don't handle that. * (This is justified by the assumption that downsizing will be handled mostly * by adjusting the DCT_scaled_size values, so that the actual scale factor at * the upsample step needn't be much less than one.) * * To provide the desired context, we have to retain the last two row groups * of one iMCU row while reading in the next iMCU row. (The last row group * can't be processed until we have another row group for its below-context, * and so we have to save the next-to-last group too for its above-context.) * We could do this most simply by copying data around in our buffer, but * that'd be very slow. We can avoid copying any data by creating a rather * strange pointer structure. Here's how it works. We allocate a workspace * consisting of M+2 row groups (where M = min_DCT_scaled_size is the number * of row groups per iMCU row). We create two sets of redundant pointers to * the workspace. Labeling the physical row groups 0 to M+1, the synthesized * pointer lists look like this: * M+1 M-1 * master pointer --> 0 master pointer --> 0 * 1 1 * ... ... * M-3 M-3 * M-2 M * M-1 M+1 * M M-2 * M+1 M-1 * 0 0 * We read alternate iMCU rows using each master pointer; thus the last two * row groups of the previous iMCU row remain un-overwritten in the workspace. * The pointer lists are set up so that the required context rows appear to * be adjacent to the proper places when we pass the pointer lists to the * upsampler. * * The above pictures describe the normal state of the pointer lists. * At top and bottom of the image, we diddle the pointer lists to duplicate * the first or last sample row as necessary (this is cheaper than copying * sample rows around). * * This scheme breaks down if M < 2, ie, min_DCT_scaled_size is 1. In that * situation each iMCU row provides only one row group so the buffering logic * must be different (eg, we must read two iMCU rows before we can emit the * first row group). For now, we simply do not support providing context * rows when min_DCT_scaled_size is 1. That combination seems unlikely to * be worth providing --- if someone wants a 1/8th-size preview, they probably * want it quick and dirty, so a context-free upsampler is sufficient. */ /* Private buffer controller object */ typedef struct { struct jpeg_d_main_controller pub; /* public fields */ /* Pointer to allocated workspace (M or M+2 row groups). */ JSAMPARRAY buffer[MAX_COMPONENTS]; boolean buffer_full; /* Have we gotten an iMCU row from decoder? */ JDIMENSION rowgroup_ctr; /* counts row groups output to postprocessor */ /* Remaining fields are only used in the context case. */ /* These are the master pointers to the funny-order pointer lists. */ JSAMPIMAGE xbuffer[2]; /* pointers to weird pointer lists */ int whichptr; /* indicates which pointer set is now in use */ int context_state; /* process_data state machine status */ JDIMENSION rowgroups_avail; /* row groups available to postprocessor */ JDIMENSION iMCU_row_ctr; /* counts iMCU rows to detect image top/bot */ } my_main_controller; typedef my_main_controller * my_main_ptr; /* context_state values: */ #define CTX_PREPARE_FOR_IMCU 0 /* need to prepare for MCU row */ #define CTX_PROCESS_IMCU 1 /* feeding iMCU to postprocessor */ #define CTX_POSTPONED_ROW 2 /* feeding postponed row group */ /* Forward declarations */ METHODDEF(void) process_data_simple_main JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); METHODDEF(void) process_data_context_main JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); #ifdef QUANT_2PASS_SUPPORTED METHODDEF(void) process_data_crank_post JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); #endif LOCAL(void) alloc_funny_pointers (j_decompress_ptr cinfo) /* Allocate space for the funny pointer lists. * This is done only once, not once per pass. */ { my_main_ptr main = (my_main_ptr) cinfo->main; int ci, rgroup; int M = cinfo->min_DCT_v_scaled_size; jpeg_component_info *compptr; JSAMPARRAY xbuf; /* Get top-level space for component array pointers. * We alloc both arrays with one call to save a few cycles. */ main->xbuffer[0] = (JSAMPIMAGE) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->num_components * 2 * SIZEOF(JSAMPARRAY)); main->xbuffer[1] = main->xbuffer[0] + cinfo->num_components; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; /* height of a row group of component */ /* Get space for pointer lists --- M+4 row groups in each list. * We alloc both pointer lists with one call to save a few cycles. */ xbuf = (JSAMPARRAY) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW)); xbuf += rgroup; /* want one row group at negative offsets */ main->xbuffer[0][ci] = xbuf; xbuf += rgroup * (M + 4); main->xbuffer[1][ci] = xbuf; } } LOCAL(void) make_funny_pointers (j_decompress_ptr cinfo) /* Create the funny pointer lists discussed in the comments above. * The actual workspace is already allocated (in main->buffer), * and the space for the pointer lists is allocated too. * This routine just fills in the curiously ordered lists. * This will be repeated at the beginning of each pass. */ { my_main_ptr main = (my_main_ptr) cinfo->main; int ci, i, rgroup; int M = cinfo->min_DCT_v_scaled_size; jpeg_component_info *compptr; JSAMPARRAY buf, xbuf0, xbuf1; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; /* height of a row group of component */ xbuf0 = main->xbuffer[0][ci]; xbuf1 = main->xbuffer[1][ci]; /* First copy the workspace pointers as-is */ buf = main->buffer[ci]; for (i = 0; i < rgroup * (M + 2); i++) { xbuf0[i] = xbuf1[i] = buf[i]; } /* In the second list, put the last four row groups in swapped order */ for (i = 0; i < rgroup * 2; i++) { xbuf1[rgroup*(M-2) + i] = buf[rgroup*M + i]; xbuf1[rgroup*M + i] = buf[rgroup*(M-2) + i]; } /* The wraparound pointers at top and bottom will be filled later * (see set_wraparound_pointers, below). Initially we want the "above" * pointers to duplicate the first actual data line. This only needs * to happen in xbuffer[0]. */ for (i = 0; i < rgroup; i++) { xbuf0[i - rgroup] = xbuf0[0]; } } } LOCAL(void) set_wraparound_pointers (j_decompress_ptr cinfo) /* Set up the "wraparound" pointers at top and bottom of the pointer lists. * This changes the pointer list state from top-of-image to the normal state. */ { my_main_ptr main = (my_main_ptr) cinfo->main; int ci, i, rgroup; int M = cinfo->min_DCT_v_scaled_size; jpeg_component_info *compptr; JSAMPARRAY xbuf0, xbuf1; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; /* height of a row group of component */ xbuf0 = main->xbuffer[0][ci]; xbuf1 = main->xbuffer[1][ci]; for (i = 0; i < rgroup; i++) { xbuf0[i - rgroup] = xbuf0[rgroup*(M+1) + i]; xbuf1[i - rgroup] = xbuf1[rgroup*(M+1) + i]; xbuf0[rgroup*(M+2) + i] = xbuf0[i]; xbuf1[rgroup*(M+2) + i] = xbuf1[i]; } } } LOCAL(void) set_bottom_pointers (j_decompress_ptr cinfo) /* Change the pointer lists to duplicate the last sample row at the bottom * of the image. whichptr indicates which xbuffer holds the final iMCU row. * Also sets rowgroups_avail to indicate number of nondummy row groups in row. */ { my_main_ptr main = (my_main_ptr) cinfo->main; int ci, i, rgroup, iMCUheight, rows_left; jpeg_component_info *compptr; JSAMPARRAY xbuf; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Count sample rows in one iMCU row and in one row group */ iMCUheight = compptr->v_samp_factor * compptr->DCT_v_scaled_size; rgroup = iMCUheight / cinfo->min_DCT_v_scaled_size; /* Count nondummy sample rows remaining for this component */ rows_left = (int) (compptr->downsampled_height % (JDIMENSION) iMCUheight); if (rows_left == 0) rows_left = iMCUheight; /* Count nondummy row groups. Should get same answer for each component, * so we need only do it once. */ if (ci == 0) { main->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1); } /* Duplicate the last real sample row rgroup*2 times; this pads out the * last partial rowgroup and ensures at least one full rowgroup of context. */ xbuf = main->xbuffer[main->whichptr][ci]; for (i = 0; i < rgroup * 2; i++) { xbuf[rows_left + i] = xbuf[rows_left-1]; } } } /* * Initialize for a processing pass. */ METHODDEF(void) start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) { my_main_ptr main = (my_main_ptr) cinfo->main; switch (pass_mode) { case JBUF_PASS_THRU: if (cinfo->upsample->need_context_rows) { main->pub.process_data = process_data_context_main; make_funny_pointers(cinfo); /* Create the xbuffer[] lists */ main->whichptr = 0; /* Read first iMCU row into xbuffer[0] */ main->context_state = CTX_PREPARE_FOR_IMCU; main->iMCU_row_ctr = 0; } else { /* Simple case with no context needed */ main->pub.process_data = process_data_simple_main; } main->buffer_full = FALSE; /* Mark buffer empty */ main->rowgroup_ctr = 0; break; #ifdef QUANT_2PASS_SUPPORTED case JBUF_CRANK_DEST: /* For last pass of 2-pass quantization, just crank the postprocessor */ main->pub.process_data = process_data_crank_post; break; #endif default: ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); break; } } /* * Process some data. * This handles the simple case where no context is required. */ METHODDEF(void) process_data_simple_main (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) { my_main_ptr main = (my_main_ptr) cinfo->main; JDIMENSION rowgroups_avail; /* Read input data if we haven't filled the main buffer yet */ if (! main->buffer_full) { if (! (*cinfo->coef->decompress_data) (cinfo, main->buffer)) return; /* suspension forced, can do nothing more */ main->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ } /* There are always min_DCT_scaled_size row groups in an iMCU row. */ rowgroups_avail = (JDIMENSION) cinfo->min_DCT_v_scaled_size; /* Note: at the bottom of the image, we may pass extra garbage row groups * to the postprocessor. The postprocessor has to check for bottom * of image anyway (at row resolution), so no point in us doing it too. */ /* Feed the postprocessor */ (*cinfo->post->post_process_data) (cinfo, main->buffer, &main->rowgroup_ctr, rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); /* Has postprocessor consumed all the data yet? If so, mark buffer empty */ if (main->rowgroup_ctr >= rowgroups_avail) { main->buffer_full = FALSE; main->rowgroup_ctr = 0; } } /* * Process some data. * This handles the case where context rows must be provided. */ METHODDEF(void) process_data_context_main (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) { my_main_ptr main = (my_main_ptr) cinfo->main; /* Read input data if we haven't filled the main buffer yet */ if (! main->buffer_full) { if (! (*cinfo->coef->decompress_data) (cinfo, main->xbuffer[main->whichptr])) return; /* suspension forced, can do nothing more */ main->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ main->iMCU_row_ctr++; /* count rows received */ } /* Postprocessor typically will not swallow all the input data it is handed * in one call (due to filling the output buffer first). Must be prepared * to exit and restart. This switch lets us keep track of how far we got. * Note that each case falls through to the next on successful completion. */ switch (main->context_state) { case CTX_POSTPONED_ROW: /* Call postprocessor using previously set pointers for postponed row */ (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr], &main->rowgroup_ctr, main->rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); if (main->rowgroup_ctr < main->rowgroups_avail) return; /* Need to suspend */ main->context_state = CTX_PREPARE_FOR_IMCU; if (*out_row_ctr >= out_rows_avail) return; /* Postprocessor exactly filled output buf */ /*FALLTHROUGH*/ case CTX_PREPARE_FOR_IMCU: /* Prepare to process first M-1 row groups of this iMCU row */ main->rowgroup_ctr = 0; main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_v_scaled_size - 1); /* Check for bottom of image: if so, tweak pointers to "duplicate" * the last sample row, and adjust rowgroups_avail to ignore padding rows. */ if (main->iMCU_row_ctr == cinfo->total_iMCU_rows) set_bottom_pointers(cinfo); main->context_state = CTX_PROCESS_IMCU; /*FALLTHROUGH*/ case CTX_PROCESS_IMCU: /* Call postprocessor using previously set pointers */ (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr], &main->rowgroup_ctr, main->rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); if (main->rowgroup_ctr < main->rowgroups_avail) return; /* Need to suspend */ /* After the first iMCU, change wraparound pointers to normal state */ if (main->iMCU_row_ctr == 1) set_wraparound_pointers(cinfo); /* Prepare to load new iMCU row using other xbuffer list */ main->whichptr ^= 1; /* 0=>1 or 1=>0 */ main->buffer_full = FALSE; /* Still need to process last row group of this iMCU row, */ /* which is saved at index M+1 of the other xbuffer */ main->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_v_scaled_size + 1); main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_v_scaled_size + 2); main->context_state = CTX_POSTPONED_ROW; } } /* * Process some data. * Final pass of two-pass quantization: just call the postprocessor. * Source data will be the postprocessor controller's internal buffer. */ #ifdef QUANT_2PASS_SUPPORTED METHODDEF(void) process_data_crank_post (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) { (*cinfo->post->post_process_data) (cinfo, (JSAMPIMAGE) NULL, (JDIMENSION *) NULL, (JDIMENSION) 0, output_buf, out_row_ctr, out_rows_avail); } #endif /* QUANT_2PASS_SUPPORTED */ /* * Initialize main buffer controller. */ GLOBAL(void) jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer) { my_main_ptr main; int ci, rgroup, ngroups; jpeg_component_info *compptr; main = (my_main_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_main_controller)); cinfo->main = (struct jpeg_d_main_controller *) main; main->pub.start_pass = start_pass_main; if (need_full_buffer) /* shouldn't happen */ ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); /* Allocate the workspace. * ngroups is the number of row groups we need. */ if (cinfo->upsample->need_context_rows) { if (cinfo->min_DCT_v_scaled_size < 2) /* unsupported, see comments above */ ERREXIT(cinfo, JERR_NOTIMPL); alloc_funny_pointers(cinfo); /* Alloc space for xbuffer[] lists */ ngroups = cinfo->min_DCT_v_scaled_size + 2; } else { ngroups = cinfo->min_DCT_v_scaled_size; } for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; /* height of a row group of component */ main->buffer[ci] = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, compptr->width_in_blocks * compptr->DCT_h_scaled_size, (JDIMENSION) (rgroup * ngroups)); } } jpeg-8d1/jdinput.c0000644000175000017500000006071611316100746012655 0ustar billbill/* * jdinput.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2002-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains input control logic for the JPEG decompressor. * These routines are concerned with controlling the decompressor's input * processing (marker reading and coefficient decoding). The actual input * reading is done in jdmarker.c, jdhuff.c, and jdarith.c. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Private state */ typedef struct { struct jpeg_input_controller pub; /* public fields */ int inheaders; /* Nonzero until first SOS is reached */ } my_input_controller; typedef my_input_controller * my_inputctl_ptr; /* Forward declarations */ METHODDEF(int) consume_markers JPP((j_decompress_ptr cinfo)); /* * Routines to calculate various quantities related to the size of the image. */ /* * Compute output image dimensions and related values. * NOTE: this is exported for possible use by application. * Hence it mustn't do anything that can't be done twice. */ GLOBAL(void) jpeg_core_output_dimensions (j_decompress_ptr cinfo) /* Do computations that are needed before master selection phase. * This function is used for transcoding and full decompression. */ { #ifdef IDCT_SCALING_SUPPORTED int ci; jpeg_component_info *compptr; /* Compute actual output image dimensions and DCT scaling choices. */ if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom) { /* Provide 1/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 1; cinfo->min_DCT_v_scaled_size = 1; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 2) { /* Provide 2/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 2L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 2L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 2; cinfo->min_DCT_v_scaled_size = 2; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 3) { /* Provide 3/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 3L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 3L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 3; cinfo->min_DCT_v_scaled_size = 3; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 4) { /* Provide 4/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 4L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 4L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 4; cinfo->min_DCT_v_scaled_size = 4; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 5) { /* Provide 5/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 5L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 5L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 5; cinfo->min_DCT_v_scaled_size = 5; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 6) { /* Provide 6/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 6L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 6L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 6; cinfo->min_DCT_v_scaled_size = 6; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 7) { /* Provide 7/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 7L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 7L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 7; cinfo->min_DCT_v_scaled_size = 7; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 8) { /* Provide 8/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 8L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 8L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 8; cinfo->min_DCT_v_scaled_size = 8; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 9) { /* Provide 9/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 9L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 9L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 9; cinfo->min_DCT_v_scaled_size = 9; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 10) { /* Provide 10/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 10L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 10L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 10; cinfo->min_DCT_v_scaled_size = 10; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 11) { /* Provide 11/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 11L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 11L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 11; cinfo->min_DCT_v_scaled_size = 11; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 12) { /* Provide 12/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 12L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 12L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 12; cinfo->min_DCT_v_scaled_size = 12; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 13) { /* Provide 13/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 13L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 13L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 13; cinfo->min_DCT_v_scaled_size = 13; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 14) { /* Provide 14/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 14L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 14L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 14; cinfo->min_DCT_v_scaled_size = 14; } else if (cinfo->scale_num * cinfo->block_size <= cinfo->scale_denom * 15) { /* Provide 15/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 15L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 15L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 15; cinfo->min_DCT_v_scaled_size = 15; } else { /* Provide 16/block_size scaling */ cinfo->output_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * 16L, (long) cinfo->block_size); cinfo->output_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * 16L, (long) cinfo->block_size); cinfo->min_DCT_h_scaled_size = 16; cinfo->min_DCT_v_scaled_size = 16; } /* Recompute dimensions of components */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { compptr->DCT_h_scaled_size = cinfo->min_DCT_h_scaled_size; compptr->DCT_v_scaled_size = cinfo->min_DCT_v_scaled_size; } #else /* !IDCT_SCALING_SUPPORTED */ /* Hardwire it to "no scaling" */ cinfo->output_width = cinfo->image_width; cinfo->output_height = cinfo->image_height; /* jdinput.c has already initialized DCT_scaled_size, * and has computed unscaled downsampled_width and downsampled_height. */ #endif /* IDCT_SCALING_SUPPORTED */ } LOCAL(void) initial_setup (j_decompress_ptr cinfo) /* Called once, when first SOS marker is reached */ { int ci; jpeg_component_info *compptr; /* Make sure image isn't bigger than I can handle */ if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION || (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION) ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION); /* For now, precision must match compiled-in value... */ if (cinfo->data_precision != BITS_IN_JSAMPLE) ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision); /* Check that number of components won't exceed internal array sizes */ if (cinfo->num_components > MAX_COMPONENTS) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, MAX_COMPONENTS); /* Compute maximum sampling factors; check factor validity */ cinfo->max_h_samp_factor = 1; cinfo->max_v_samp_factor = 1; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR || compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR) ERREXIT(cinfo, JERR_BAD_SAMPLING); cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor, compptr->h_samp_factor); cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor, compptr->v_samp_factor); } /* Derive block_size, natural_order, and lim_Se */ if (cinfo->is_baseline || (cinfo->progressive_mode && cinfo->comps_in_scan)) { /* no pseudo SOS marker */ cinfo->block_size = DCTSIZE; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; } else switch (cinfo->Se) { case (1*1-1): cinfo->block_size = 1; cinfo->natural_order = jpeg_natural_order; /* not needed */ cinfo->lim_Se = cinfo->Se; break; case (2*2-1): cinfo->block_size = 2; cinfo->natural_order = jpeg_natural_order2; cinfo->lim_Se = cinfo->Se; break; case (3*3-1): cinfo->block_size = 3; cinfo->natural_order = jpeg_natural_order3; cinfo->lim_Se = cinfo->Se; break; case (4*4-1): cinfo->block_size = 4; cinfo->natural_order = jpeg_natural_order4; cinfo->lim_Se = cinfo->Se; break; case (5*5-1): cinfo->block_size = 5; cinfo->natural_order = jpeg_natural_order5; cinfo->lim_Se = cinfo->Se; break; case (6*6-1): cinfo->block_size = 6; cinfo->natural_order = jpeg_natural_order6; cinfo->lim_Se = cinfo->Se; break; case (7*7-1): cinfo->block_size = 7; cinfo->natural_order = jpeg_natural_order7; cinfo->lim_Se = cinfo->Se; break; case (8*8-1): cinfo->block_size = 8; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (9*9-1): cinfo->block_size = 9; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (10*10-1): cinfo->block_size = 10; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (11*11-1): cinfo->block_size = 11; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (12*12-1): cinfo->block_size = 12; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (13*13-1): cinfo->block_size = 13; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (14*14-1): cinfo->block_size = 14; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (15*15-1): cinfo->block_size = 15; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; case (16*16-1): cinfo->block_size = 16; cinfo->natural_order = jpeg_natural_order; cinfo->lim_Se = DCTSIZE2-1; break; default: ERREXIT4(cinfo, JERR_BAD_PROGRESSION, cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al); break; } /* We initialize DCT_scaled_size and min_DCT_scaled_size to block_size. * In the full decompressor, * this will be overridden by jpeg_calc_output_dimensions in jdmaster.c; * but in the transcoder, * jpeg_calc_output_dimensions is not used, so we must do it here. */ cinfo->min_DCT_h_scaled_size = cinfo->block_size; cinfo->min_DCT_v_scaled_size = cinfo->block_size; /* Compute dimensions of components */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { compptr->DCT_h_scaled_size = cinfo->block_size; compptr->DCT_v_scaled_size = cinfo->block_size; /* Size in DCT blocks */ compptr->width_in_blocks = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor, (long) (cinfo->max_h_samp_factor * cinfo->block_size)); compptr->height_in_blocks = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor, (long) (cinfo->max_v_samp_factor * cinfo->block_size)); /* downsampled_width and downsampled_height will also be overridden by * jdmaster.c if we are doing full decompression. The transcoder library * doesn't use these values, but the calling application might. */ /* Size in samples */ compptr->downsampled_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor, (long) cinfo->max_h_samp_factor); compptr->downsampled_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor, (long) cinfo->max_v_samp_factor); /* Mark component needed, until color conversion says otherwise */ compptr->component_needed = TRUE; /* Mark no quantization table yet saved for component */ compptr->quant_table = NULL; } /* Compute number of fully interleaved MCU rows. */ cinfo->total_iMCU_rows = (JDIMENSION) jdiv_round_up((long) cinfo->image_height, (long) (cinfo->max_v_samp_factor * cinfo->block_size)); /* Decide whether file contains multiple scans */ if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode) cinfo->inputctl->has_multiple_scans = TRUE; else cinfo->inputctl->has_multiple_scans = FALSE; } LOCAL(void) per_scan_setup (j_decompress_ptr cinfo) /* Do computations that are needed before processing a JPEG scan */ /* cinfo->comps_in_scan and cinfo->cur_comp_info[] were set from SOS marker */ { int ci, mcublks, tmp; jpeg_component_info *compptr; if (cinfo->comps_in_scan == 1) { /* Noninterleaved (single-component) scan */ compptr = cinfo->cur_comp_info[0]; /* Overall image size in MCUs */ cinfo->MCUs_per_row = compptr->width_in_blocks; cinfo->MCU_rows_in_scan = compptr->height_in_blocks; /* For noninterleaved scan, always one block per MCU */ compptr->MCU_width = 1; compptr->MCU_height = 1; compptr->MCU_blocks = 1; compptr->MCU_sample_width = compptr->DCT_h_scaled_size; compptr->last_col_width = 1; /* For noninterleaved scans, it is convenient to define last_row_height * as the number of block rows present in the last iMCU row. */ tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor); if (tmp == 0) tmp = compptr->v_samp_factor; compptr->last_row_height = tmp; /* Prepare array describing MCU composition */ cinfo->blocks_in_MCU = 1; cinfo->MCU_membership[0] = 0; } else { /* Interleaved (multi-component) scan */ if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan, MAX_COMPS_IN_SCAN); /* Overall image size in MCUs */ cinfo->MCUs_per_row = (JDIMENSION) jdiv_round_up((long) cinfo->image_width, (long) (cinfo->max_h_samp_factor * cinfo->block_size)); cinfo->MCU_rows_in_scan = (JDIMENSION) jdiv_round_up((long) cinfo->image_height, (long) (cinfo->max_v_samp_factor * cinfo->block_size)); cinfo->blocks_in_MCU = 0; for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* Sampling factors give # of blocks of component in each MCU */ compptr->MCU_width = compptr->h_samp_factor; compptr->MCU_height = compptr->v_samp_factor; compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height; compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_h_scaled_size; /* Figure number of non-dummy blocks in last MCU column & row */ tmp = (int) (compptr->width_in_blocks % compptr->MCU_width); if (tmp == 0) tmp = compptr->MCU_width; compptr->last_col_width = tmp; tmp = (int) (compptr->height_in_blocks % compptr->MCU_height); if (tmp == 0) tmp = compptr->MCU_height; compptr->last_row_height = tmp; /* Prepare array describing MCU composition */ mcublks = compptr->MCU_blocks; if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU) ERREXIT(cinfo, JERR_BAD_MCU_SIZE); while (mcublks-- > 0) { cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci; } } } } /* * Save away a copy of the Q-table referenced by each component present * in the current scan, unless already saved during a prior scan. * * In a multiple-scan JPEG file, the encoder could assign different components * the same Q-table slot number, but change table definitions between scans * so that each component uses a different Q-table. (The IJG encoder is not * currently capable of doing this, but other encoders might.) Since we want * to be able to dequantize all the components at the end of the file, this * means that we have to save away the table actually used for each component. * We do this by copying the table at the start of the first scan containing * the component. * The JPEG spec prohibits the encoder from changing the contents of a Q-table * slot between scans of a component using that slot. If the encoder does so * anyway, this decoder will simply use the Q-table values that were current * at the start of the first scan for the component. * * The decompressor output side looks only at the saved quant tables, * not at the current Q-table slots. */ LOCAL(void) latch_quant_tables (j_decompress_ptr cinfo) { int ci, qtblno; jpeg_component_info *compptr; JQUANT_TBL * qtbl; for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* No work if we already saved Q-table for this component */ if (compptr->quant_table != NULL) continue; /* Make sure specified quantization table is present */ qtblno = compptr->quant_tbl_no; if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS || cinfo->quant_tbl_ptrs[qtblno] == NULL) ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno); /* OK, save away the quantization table */ qtbl = (JQUANT_TBL *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(JQUANT_TBL)); MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL)); compptr->quant_table = qtbl; } } /* * Initialize the input modules to read a scan of compressed data. * The first call to this is done by jdmaster.c after initializing * the entire decompressor (during jpeg_start_decompress). * Subsequent calls come from consume_markers, below. */ METHODDEF(void) start_input_pass (j_decompress_ptr cinfo) { per_scan_setup(cinfo); latch_quant_tables(cinfo); (*cinfo->entropy->start_pass) (cinfo); (*cinfo->coef->start_input_pass) (cinfo); cinfo->inputctl->consume_input = cinfo->coef->consume_data; } /* * Finish up after inputting a compressed-data scan. * This is called by the coefficient controller after it's read all * the expected data of the scan. */ METHODDEF(void) finish_input_pass (j_decompress_ptr cinfo) { cinfo->inputctl->consume_input = consume_markers; } /* * Read JPEG markers before, between, or after compressed-data scans. * Change state as necessary when a new scan is reached. * Return value is JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. * * The consume_input method pointer points either here or to the * coefficient controller's consume_data routine, depending on whether * we are reading a compressed data segment or inter-segment markers. * * Note: This function should NOT return a pseudo SOS marker (with zero * component number) to the caller. A pseudo marker received by * read_markers is processed and then skipped for other markers. */ METHODDEF(int) consume_markers (j_decompress_ptr cinfo) { my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl; int val; if (inputctl->pub.eoi_reached) /* After hitting EOI, read no further */ return JPEG_REACHED_EOI; for (;;) { /* Loop to pass pseudo SOS marker */ val = (*cinfo->marker->read_markers) (cinfo); switch (val) { case JPEG_REACHED_SOS: /* Found SOS */ if (inputctl->inheaders) { /* 1st SOS */ if (inputctl->inheaders == 1) initial_setup(cinfo); if (cinfo->comps_in_scan == 0) { /* pseudo SOS marker */ inputctl->inheaders = 2; break; } inputctl->inheaders = 0; /* Note: start_input_pass must be called by jdmaster.c * before any more input can be consumed. jdapimin.c is * responsible for enforcing this sequencing. */ } else { /* 2nd or later SOS marker */ if (! inputctl->pub.has_multiple_scans) ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */ if (cinfo->comps_in_scan == 0) /* unexpected pseudo SOS marker */ break; start_input_pass(cinfo); } return val; case JPEG_REACHED_EOI: /* Found EOI */ inputctl->pub.eoi_reached = TRUE; if (inputctl->inheaders) { /* Tables-only datastream, apparently */ if (cinfo->marker->saw_SOF) ERREXIT(cinfo, JERR_SOF_NO_SOS); } else { /* Prevent infinite loop in coef ctlr's decompress_data routine * if user set output_scan_number larger than number of scans. */ if (cinfo->output_scan_number > cinfo->input_scan_number) cinfo->output_scan_number = cinfo->input_scan_number; } return val; case JPEG_SUSPENDED: return val; default: return val; } } } /* * Reset state to begin a fresh datastream. */ METHODDEF(void) reset_input_controller (j_decompress_ptr cinfo) { my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl; inputctl->pub.consume_input = consume_markers; inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */ inputctl->pub.eoi_reached = FALSE; inputctl->inheaders = 1; /* Reset other modules */ (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); (*cinfo->marker->reset_marker_reader) (cinfo); /* Reset progression state -- would be cleaner if entropy decoder did this */ cinfo->coef_bits = NULL; } /* * Initialize the input controller module. * This is called only once, when the decompression object is created. */ GLOBAL(void) jinit_input_controller (j_decompress_ptr cinfo) { my_inputctl_ptr inputctl; /* Create subobject in permanent pool */ inputctl = (my_inputctl_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, SIZEOF(my_input_controller)); cinfo->inputctl = (struct jpeg_input_controller *) inputctl; /* Initialize method pointers */ inputctl->pub.consume_input = consume_markers; inputctl->pub.reset_input_controller = reset_input_controller; inputctl->pub.start_input_pass = start_input_pass; inputctl->pub.finish_input_pass = finish_input_pass; /* Initialize state: can't use reset_input_controller since we don't * want to try to reset other modules yet. */ inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */ inputctl->pub.eoi_reached = FALSE; inputctl->inheaders = 1; } jpeg-8d1/wrjpgcom.10000644000175000017500000000510305770146315012744 0ustar billbill.TH WRJPGCOM 1 "15 June 1995" .SH NAME wrjpgcom \- insert text comments into a JPEG file .SH SYNOPSIS .B wrjpgcom [ .B \-replace ] [ .BI \-comment " text" ] [ .BI \-cfile " name" ] [ .I filename ] .LP .SH DESCRIPTION .LP .B wrjpgcom reads the named JPEG/JFIF file, or the standard input if no file is named, and generates a new JPEG/JFIF file on standard output. A comment block is added to the file. .PP The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. Although the standard doesn't actually define what COM blocks are for, they are widely used to hold user-supplied text strings. This lets you add annotations, titles, index terms, etc to your JPEG files, and later retrieve them as text. COM blocks do not interfere with the image stored in the JPEG file. The maximum size of a COM block is 64K, but you can have as many of them as you like in one JPEG file. .PP .B wrjpgcom adds a COM block, containing text you provide, to a JPEG file. Ordinarily, the COM block is added after any existing COM blocks; but you can delete the old COM blocks if you wish. .SH OPTIONS Switch names may be abbreviated, and are not case sensitive. .TP .B \-replace Delete any existing COM blocks from the file. .TP .BI \-comment " text" Supply text for new COM block on command line. .TP .BI \-cfile " name" Read text for new COM block from named file. .PP If you have only one line of comment text to add, you can provide it on the command line with .BR \-comment . The comment text must be surrounded with quotes so that it is treated as a single argument. Longer comments can be read from a text file. .PP If you give neither .B \-comment nor .BR \-cfile , then .B wrjpgcom will read the comment text from standard input. (In this case an input image file name MUST be supplied, so that the source JPEG file comes from somewhere else.) You can enter multiple lines, up to 64KB worth. Type an end-of-file indicator (usually control-D) to terminate the comment text entry. .PP .B wrjpgcom will not add a COM block if the provided comment string is empty. Therefore \fB\-replace \-comment ""\fR can be used to delete all COM blocks from a file. .SH EXAMPLES .LP Add a short comment to in.jpg, producing out.jpg: .IP .B wrjpgcom \-c \fI"View of my back yard" in.jpg .B > .I out.jpg .PP Attach a long comment previously stored in comment.txt: .IP .B wrjpgcom .I in.jpg .B < .I comment.txt .B > .I out.jpg .PP or equivalently .IP .B wrjpgcom .B -cfile .I comment.txt .B < .I in.jpg .B > .I out.jpg .SH SEE ALSO .BR cjpeg (1), .BR djpeg (1), .BR jpegtran (1), .BR rdjpgcom (1) .SH AUTHOR Independent JPEG Group jpeg-8d1/Makefile.am0000644000175000017500000001152411367316302013064 0ustar billbill## Process this file with automake to produce Makefile.in # # Automake Makefile for the JPEG library # # This file is written by Bob Friesenhahn, Guido Vollbeding # # Sources to build library LIBSOURCES = jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c @MEMORYMGR@.c # System dependent sources SYSDEPSOURCES = jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # Headers which are installed to support the library INSTINCLUDES = jerror.h jmorecfg.h jpeglib.h # Headers which are not installed OTHERINCLUDES = cderror.h cdjpeg.h jdct.h jinclude.h jmemsys.h jpegint.h \ jversion.h transupp.h # Manual pages (Automake uses 'MANS' for itself) DISTMANS= cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1 # Other documentation files DOCS= README install.txt usage.txt wizard.txt example.c libjpeg.txt \ structure.txt coderules.txt filelist.txt change.log # Makefiles for various systems MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt # Configuration files CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms # Support scripts for configure CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing # Miscellaneous support files OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map # Test support files TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg # libtool libraries to build lib_LTLIBRARIES = libjpeg.la # Library sources for libjpeg.la libjpeg_la_SOURCES = $(LIBSOURCES) # LDFLAGS for libjpeg.la libjpeg_la_LDFLAGS = -no-undefined \ -version-info $(JPEG_LIB_VERSION) if HAVE_LD_VERSION_SCRIPT libjpeg_la_LDFLAGS += -Wl,--version-script=$(srcdir)/libjpeg.map endif # Executables to build bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom # Executable sources & libs cjpeg_SOURCES = cjpeg.c rdppm.c rdgif.c rdtarga.c rdrle.c rdbmp.c \ rdswitch.c cdjpeg.c cjpeg_LDADD = libjpeg.la djpeg_SOURCES = djpeg.c wrppm.c wrgif.c wrtarga.c wrrle.c wrbmp.c \ rdcolmap.c cdjpeg.c djpeg_LDADD = libjpeg.la jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c jpegtran_LDADD = libjpeg.la rdjpgcom_SOURCES = rdjpgcom.c wrjpgcom_SOURCES = wrjpgcom.c # Manual pages to install man_MANS = $(DISTMANS) # Headers to install include_HEADERS = $(INSTINCLUDES) # Other distributed headers noinst_HEADERS = $(OTHERINCLUDES) # Other distributed files EXTRA_DIST = $(DOCS) $(DISTMANS) $(MKFILES) $(CONFIGFILES) $(SYSDEPSOURCES) \ $(OTHERFILES) $(TESTFILES) # Files to be cleaned CLEANFILES = testout.ppm testout.bmp testout.jpg testoutp.ppm testoutp.jpg \ testoutt.jpg # Install jconfig.h install-data-local: $(mkinstalldirs) $(DESTDIR)$(includedir) $(INSTALL_HEADER) jconfig.h $(DESTDIR)$(includedir)/jconfig.h # Uninstall jconfig.h uninstall-local: rm -f $(DESTDIR)$(includedir)/jconfig.h # Run tests test: check-local check-local: rm -f testout* ./djpeg -dct int -ppm -outfile testout.ppm $(srcdir)/testorig.jpg ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp $(srcdir)/testorig.jpg ./cjpeg -dct int -outfile testout.jpg $(srcdir)/testimg.ppm ./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg $(srcdir)/testimg.ppm ./jpegtran -outfile testoutt.jpg $(srcdir)/testprog.jpg cmp $(srcdir)/testimg.ppm testout.ppm cmp $(srcdir)/testimg.bmp testout.bmp cmp $(srcdir)/testimg.jpg testout.jpg cmp $(srcdir)/testimg.ppm testoutp.ppm cmp $(srcdir)/testimgp.jpg testoutp.jpg cmp $(srcdir)/testorig.jpg testoutt.jpg jpeg-8d1/maketdsp.vc60000644000175000017500000000632511174123762013265 0ustar billbill# Microsoft Developer Studio Project File - Name="jpegtran" - Package Owner=<4> # Microsoft Developer Studio Generated Build File, Format Version 6.00 # ** NICHT BEARBEITEN ** # TARGTYPE "Win32 (x86) Console Application" 0x0103 CFG=jpegtran - Win32 !MESSAGE Dies ist kein gltiges Makefile. Zum Erstellen dieses Projekts mit NMAKE !MESSAGE verwenden Sie den Befehl "Makefile exportieren" und fhren Sie den Befehl !MESSAGE !MESSAGE NMAKE /f "jpegtran.mak". !MESSAGE !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "jpegtran.mak" CFG="jpegtran - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "jpegtran - Win32" (basierend auf "Win32 (x86) Console Application") !MESSAGE # Begin Project # PROP AllowPerConfigDependencies 0 # PROP Scc_ProjName "" # PROP Scc_LocalPath "" CPP=cl.exe RSC=rc.exe # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 0 # PROP BASE Output_Dir ".\jpegtran\Release" # PROP BASE Intermediate_Dir ".\jpegtran\Release" # PROP BASE Target_Dir ".\jpegtran" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 0 # PROP Output_Dir ".\jpegtran\Release" # PROP Intermediate_Dir ".\jpegtran\Release" # PROP Ignore_Export_Lib 0 # PROP Target_Dir ".\jpegtran" # ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /c # ADD CPP /nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /FD /c # ADD BASE RSC /l 0x409 /d "NDEBUG" # ADD RSC /l 0x409 /d "NDEBUG" BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LINK32=link.exe # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # ADD LINK32 Release\jpeg.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # Begin Target # Name "jpegtran - Win32" # Begin Group "Quellcodedateien" # PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat;for;f90" # Begin Source File SOURCE=.\cdjpeg.c # End Source File # Begin Source File SOURCE=.\jpegtran.c # End Source File # Begin Source File SOURCE=.\rdswitch.c # End Source File # Begin Source File SOURCE=.\transupp.c # End Source File # End Group # Begin Group "Header-Dateien" # PROP Default_Filter "h;hpp;hxx;hm;inl;fi;fd" # Begin Source File SOURCE=.\cderror.h # End Source File # Begin Source File SOURCE=.\cdjpeg.h # End Source File # Begin Source File SOURCE=.\jconfig.h # End Source File # Begin Source File SOURCE=.\jerror.h # End Source File # Begin Source File SOURCE=.\jinclude.h # End Source File # Begin Source File SOURCE=.\jmorecfg.h # End Source File # Begin Source File SOURCE=.\jpegint.h # End Source File # Begin Source File SOURCE=.\jpeglib.h # End Source File # Begin Source File SOURCE=.\jversion.h # End Source File # Begin Source File SOURCE=.\transupp.h # End Source File # End Group # Begin Group "Ressourcendateien" # PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;cnt;rtf;gif;jpg;jpeg;jpe" # End Group # End Target # End Project jpeg-8d1/wrbmp.c0000644000175000017500000003313106073531066012325 0ustar billbill/* * wrbmp.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to write output images in Microsoft "BMP" * format (MS Windows 3.x and OS/2 1.x flavors). * Either 8-bit colormapped or 24-bit full-color format can be written. * No compression is supported. * * These routines may need modification for non-Unix environments or * specialized applications. As they stand, they assume output to * an ordinary stdio stream. * * This code contributed by James Arthur Boucher. */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef BMP_SUPPORTED /* * To support 12-bit JPEG data, we'd have to scale output down to 8 bits. * This is not yet implemented. */ #if BITS_IN_JSAMPLE != 8 Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ #endif /* * Since BMP stores scanlines bottom-to-top, we have to invert the image * from JPEG's top-to-bottom order. To do this, we save the outgoing data * in a virtual array during put_pixel_row calls, then actually emit the * BMP file during finish_output. The virtual array contains one JSAMPLE per * pixel if the output is grayscale or colormapped, three if it is full color. */ /* Private version of data destination object */ typedef struct { struct djpeg_dest_struct pub; /* public fields */ boolean is_os2; /* saves the OS2 format request flag */ jvirt_sarray_ptr whole_image; /* needed to reverse row order */ JDIMENSION data_width; /* JSAMPLEs per row */ JDIMENSION row_width; /* physical width of one row in the BMP file */ int pad_bytes; /* number of padding bytes needed per row */ JDIMENSION cur_output_row; /* next row# to write to virtual array */ } bmp_dest_struct; typedef bmp_dest_struct * bmp_dest_ptr; /* Forward declarations */ LOCAL(void) write_colormap JPP((j_decompress_ptr cinfo, bmp_dest_ptr dest, int map_colors, int map_entry_size)); /* * Write some pixel data. * In this module rows_supplied will always be 1. */ METHODDEF(void) put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) /* This version is for writing 24-bit pixels */ { bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; JSAMPARRAY image_ptr; register JSAMPROW inptr, outptr; register JDIMENSION col; int pad; /* Access next row in virtual array */ image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->whole_image, dest->cur_output_row, (JDIMENSION) 1, TRUE); dest->cur_output_row++; /* Transfer data. Note destination values must be in BGR order * (even though Microsoft's own documents say the opposite). */ inptr = dest->pub.buffer[0]; outptr = image_ptr[0]; for (col = cinfo->output_width; col > 0; col--) { outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ outptr[1] = *inptr++; outptr[0] = *inptr++; outptr += 3; } /* Zero out the pad bytes. */ pad = dest->pad_bytes; while (--pad >= 0) *outptr++ = 0; } METHODDEF(void) put_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) /* This version is for grayscale OR quantized color output */ { bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; JSAMPARRAY image_ptr; register JSAMPROW inptr, outptr; register JDIMENSION col; int pad; /* Access next row in virtual array */ image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->whole_image, dest->cur_output_row, (JDIMENSION) 1, TRUE); dest->cur_output_row++; /* Transfer data. */ inptr = dest->pub.buffer[0]; outptr = image_ptr[0]; for (col = cinfo->output_width; col > 0; col--) { *outptr++ = *inptr++; /* can omit GETJSAMPLE() safely */ } /* Zero out the pad bytes. */ pad = dest->pad_bytes; while (--pad >= 0) *outptr++ = 0; } /* * Startup: normally writes the file header. * In this module we may as well postpone everything until finish_output. */ METHODDEF(void) start_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { /* no work here */ } /* * Finish up at the end of the file. * * Here is where we really output the BMP file. * * First, routines to write the Windows and OS/2 variants of the file header. */ LOCAL(void) write_bmp_header (j_decompress_ptr cinfo, bmp_dest_ptr dest) /* Write a Windows-style BMP file header, including colormap if needed */ { char bmpfileheader[14]; char bmpinfoheader[40]; #define PUT_2B(array,offset,value) \ (array[offset] = (char) ((value) & 0xFF), \ array[offset+1] = (char) (((value) >> 8) & 0xFF)) #define PUT_4B(array,offset,value) \ (array[offset] = (char) ((value) & 0xFF), \ array[offset+1] = (char) (((value) >> 8) & 0xFF), \ array[offset+2] = (char) (((value) >> 16) & 0xFF), \ array[offset+3] = (char) (((value) >> 24) & 0xFF)) INT32 headersize, bfSize; int bits_per_pixel, cmap_entries; /* Compute colormap size and total file size */ if (cinfo->out_color_space == JCS_RGB) { if (cinfo->quantize_colors) { /* Colormapped RGB */ bits_per_pixel = 8; cmap_entries = 256; } else { /* Unquantized, full color RGB */ bits_per_pixel = 24; cmap_entries = 0; } } else { /* Grayscale output. We need to fake a 256-entry colormap. */ bits_per_pixel = 8; cmap_entries = 256; } /* File size */ headersize = 14 + 40 + cmap_entries * 4; /* Header and colormap */ bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height; /* Set unused fields of header to 0 */ MEMZERO(bmpfileheader, SIZEOF(bmpfileheader)); MEMZERO(bmpinfoheader, SIZEOF(bmpinfoheader)); /* Fill the file header */ bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */ bmpfileheader[1] = 0x4D; PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */ /* we leave bfReserved1 & bfReserved2 = 0 */ PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */ /* Fill the info header (Microsoft calls this a BITMAPINFOHEADER) */ PUT_2B(bmpinfoheader, 0, 40); /* biSize */ PUT_4B(bmpinfoheader, 4, cinfo->output_width); /* biWidth */ PUT_4B(bmpinfoheader, 8, cinfo->output_height); /* biHeight */ PUT_2B(bmpinfoheader, 12, 1); /* biPlanes - must be 1 */ PUT_2B(bmpinfoheader, 14, bits_per_pixel); /* biBitCount */ /* we leave biCompression = 0, for none */ /* we leave biSizeImage = 0; this is correct for uncompressed data */ if (cinfo->density_unit == 2) { /* if have density in dots/cm, then */ PUT_4B(bmpinfoheader, 24, (INT32) (cinfo->X_density*100)); /* XPels/M */ PUT_4B(bmpinfoheader, 28, (INT32) (cinfo->Y_density*100)); /* XPels/M */ } PUT_2B(bmpinfoheader, 32, cmap_entries); /* biClrUsed */ /* we leave biClrImportant = 0 */ if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14) ERREXIT(cinfo, JERR_FILE_WRITE); if (JFWRITE(dest->pub.output_file, bmpinfoheader, 40) != (size_t) 40) ERREXIT(cinfo, JERR_FILE_WRITE); if (cmap_entries > 0) write_colormap(cinfo, dest, cmap_entries, 4); } LOCAL(void) write_os2_header (j_decompress_ptr cinfo, bmp_dest_ptr dest) /* Write an OS2-style BMP file header, including colormap if needed */ { char bmpfileheader[14]; char bmpcoreheader[12]; INT32 headersize, bfSize; int bits_per_pixel, cmap_entries; /* Compute colormap size and total file size */ if (cinfo->out_color_space == JCS_RGB) { if (cinfo->quantize_colors) { /* Colormapped RGB */ bits_per_pixel = 8; cmap_entries = 256; } else { /* Unquantized, full color RGB */ bits_per_pixel = 24; cmap_entries = 0; } } else { /* Grayscale output. We need to fake a 256-entry colormap. */ bits_per_pixel = 8; cmap_entries = 256; } /* File size */ headersize = 14 + 12 + cmap_entries * 3; /* Header and colormap */ bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height; /* Set unused fields of header to 0 */ MEMZERO(bmpfileheader, SIZEOF(bmpfileheader)); MEMZERO(bmpcoreheader, SIZEOF(bmpcoreheader)); /* Fill the file header */ bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */ bmpfileheader[1] = 0x4D; PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */ /* we leave bfReserved1 & bfReserved2 = 0 */ PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */ /* Fill the info header (Microsoft calls this a BITMAPCOREHEADER) */ PUT_2B(bmpcoreheader, 0, 12); /* bcSize */ PUT_2B(bmpcoreheader, 4, cinfo->output_width); /* bcWidth */ PUT_2B(bmpcoreheader, 6, cinfo->output_height); /* bcHeight */ PUT_2B(bmpcoreheader, 8, 1); /* bcPlanes - must be 1 */ PUT_2B(bmpcoreheader, 10, bits_per_pixel); /* bcBitCount */ if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14) ERREXIT(cinfo, JERR_FILE_WRITE); if (JFWRITE(dest->pub.output_file, bmpcoreheader, 12) != (size_t) 12) ERREXIT(cinfo, JERR_FILE_WRITE); if (cmap_entries > 0) write_colormap(cinfo, dest, cmap_entries, 3); } /* * Write the colormap. * Windows uses BGR0 map entries; OS/2 uses BGR entries. */ LOCAL(void) write_colormap (j_decompress_ptr cinfo, bmp_dest_ptr dest, int map_colors, int map_entry_size) { JSAMPARRAY colormap = cinfo->colormap; int num_colors = cinfo->actual_number_of_colors; FILE * outfile = dest->pub.output_file; int i; if (colormap != NULL) { if (cinfo->out_color_components == 3) { /* Normal case with RGB colormap */ for (i = 0; i < num_colors; i++) { putc(GETJSAMPLE(colormap[2][i]), outfile); putc(GETJSAMPLE(colormap[1][i]), outfile); putc(GETJSAMPLE(colormap[0][i]), outfile); if (map_entry_size == 4) putc(0, outfile); } } else { /* Grayscale colormap (only happens with grayscale quantization) */ for (i = 0; i < num_colors; i++) { putc(GETJSAMPLE(colormap[0][i]), outfile); putc(GETJSAMPLE(colormap[0][i]), outfile); putc(GETJSAMPLE(colormap[0][i]), outfile); if (map_entry_size == 4) putc(0, outfile); } } } else { /* If no colormap, must be grayscale data. Generate a linear "map". */ for (i = 0; i < 256; i++) { putc(i, outfile); putc(i, outfile); putc(i, outfile); if (map_entry_size == 4) putc(0, outfile); } } /* Pad colormap with zeros to ensure specified number of colormap entries */ if (i > map_colors) ERREXIT1(cinfo, JERR_TOO_MANY_COLORS, i); for (; i < map_colors; i++) { putc(0, outfile); putc(0, outfile); putc(0, outfile); if (map_entry_size == 4) putc(0, outfile); } } METHODDEF(void) finish_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; register FILE * outfile = dest->pub.output_file; JSAMPARRAY image_ptr; register JSAMPROW data_ptr; JDIMENSION row; register JDIMENSION col; cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; /* Write the header and colormap */ if (dest->is_os2) write_os2_header(cinfo, dest); else write_bmp_header(cinfo, dest); /* Write the file body from our virtual array */ for (row = cinfo->output_height; row > 0; row--) { if (progress != NULL) { progress->pub.pass_counter = (long) (cinfo->output_height - row); progress->pub.pass_limit = (long) cinfo->output_height; (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); } image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->whole_image, row-1, (JDIMENSION) 1, FALSE); data_ptr = image_ptr[0]; for (col = dest->row_width; col > 0; col--) { putc(GETJSAMPLE(*data_ptr), outfile); data_ptr++; } } if (progress != NULL) progress->completed_extra_passes++; /* Make sure we wrote the output file OK */ fflush(outfile); if (ferror(outfile)) ERREXIT(cinfo, JERR_FILE_WRITE); } /* * The module selection routine for BMP format output. */ GLOBAL(djpeg_dest_ptr) jinit_write_bmp (j_decompress_ptr cinfo, boolean is_os2) { bmp_dest_ptr dest; JDIMENSION row_width; /* Create module interface object, fill in method pointers */ dest = (bmp_dest_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(bmp_dest_struct)); dest->pub.start_output = start_output_bmp; dest->pub.finish_output = finish_output_bmp; dest->is_os2 = is_os2; if (cinfo->out_color_space == JCS_GRAYSCALE) { dest->pub.put_pixel_rows = put_gray_rows; } else if (cinfo->out_color_space == JCS_RGB) { if (cinfo->quantize_colors) dest->pub.put_pixel_rows = put_gray_rows; else dest->pub.put_pixel_rows = put_pixel_rows; } else { ERREXIT(cinfo, JERR_BMP_COLORSPACE); } /* Calculate output image dimensions so we can allocate space */ jpeg_calc_output_dimensions(cinfo); /* Determine width of rows in the BMP file (padded to 4-byte boundary). */ row_width = cinfo->output_width * cinfo->output_components; dest->data_width = row_width; while ((row_width & 3) != 0) row_width++; dest->row_width = row_width; dest->pad_bytes = (int) (row_width - dest->data_width); /* Allocate space for inversion array, prepare for write pass */ dest->whole_image = (*cinfo->mem->request_virt_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, row_width, cinfo->output_height, (JDIMENSION) 1); dest->cur_output_row = 0; if (cinfo->progress != NULL) { cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; progress->total_extra_passes++; /* count file input as separate pass */ } /* Create decompressor output buffer. */ dest->pub.buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, row_width, (JDIMENSION) 1); dest->pub.buffer_height = 1; return (djpeg_dest_ptr) dest; } #endif /* BMP_SUPPORTED */ jpeg-8d1/makejdsw.vc60000644000175000017500000000102411166444510013247 0ustar billbillMicrosoft Developer Studio Workspace File, Format Version 6.00 # WARNUNG: DIESE ARBEITSBEREICHSDATEI DARF NICHT BEARBEITET ODER GELSCHT WERDEN! ############################################################################### Project: "jpeg"=".\jpeg.dsp" - Package Owner=<4> Package=<5> {{{ }}} Package=<4> {{{ }}} ############################################################################### Global: Package=<5> {{{ }}} Package=<3> {{{ }}} ############################################################################### jpeg-8d1/jversion.h0000644000175000017500000000061411704513210013026 0ustar billbill/* * jversion.h * * Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains software version identification. */ #define JVERSION "8d 15-Jan-2012" #define JCOPYRIGHT "Copyright (C) 2012, Thomas G. Lane, Guido Vollbeding" jpeg-8d1/wrgif.c0000644000175000017500000003113006412161742012306 0ustar billbill/* * wrgif.c * * Copyright (C) 1991-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to write output images in GIF format. * ************************************************************************** * NOTE: to avoid entanglements with Unisys' patent on LZW compression, * * this code has been modified to output "uncompressed GIF" files. * * There is no trace of the LZW algorithm in this file. * ************************************************************************** * * These routines may need modification for non-Unix environments or * specialized applications. As they stand, they assume output to * an ordinary stdio stream. */ /* * This code is loosely based on ppmtogif from the PBMPLUS distribution * of Feb. 1991. That file contains the following copyright notice: * Based on GIFENCODE by David Rowley . * Lempel-Ziv compression based on "compress" by Spencer W. Thomas et al. * Copyright (C) 1989 by Jef Poskanzer. * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose and without fee is hereby granted, provided * that the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation. This software is provided "as is" without express or * implied warranty. * * We are also required to state that * "The Graphics Interchange Format(c) is the Copyright property of * CompuServe Incorporated. GIF(sm) is a Service Mark property of * CompuServe Incorporated." */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef GIF_SUPPORTED /* Private version of data destination object */ typedef struct { struct djpeg_dest_struct pub; /* public fields */ j_decompress_ptr cinfo; /* back link saves passing separate parm */ /* State for packing variable-width codes into a bitstream */ int n_bits; /* current number of bits/code */ int maxcode; /* maximum code, given n_bits */ INT32 cur_accum; /* holds bits not yet output */ int cur_bits; /* # of bits in cur_accum */ /* State for GIF code assignment */ int ClearCode; /* clear code (doesn't change) */ int EOFCode; /* EOF code (ditto) */ int code_counter; /* counts output symbols */ /* GIF data packet construction buffer */ int bytesinpkt; /* # of bytes in current packet */ char packetbuf[256]; /* workspace for accumulating packet */ } gif_dest_struct; typedef gif_dest_struct * gif_dest_ptr; /* Largest value that will fit in N bits */ #define MAXCODE(n_bits) ((1 << (n_bits)) - 1) /* * Routines to package finished data bytes into GIF data blocks. * A data block consists of a count byte (1..255) and that many data bytes. */ LOCAL(void) flush_packet (gif_dest_ptr dinfo) /* flush any accumulated data */ { if (dinfo->bytesinpkt > 0) { /* never write zero-length packet */ dinfo->packetbuf[0] = (char) dinfo->bytesinpkt++; if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt) != (size_t) dinfo->bytesinpkt) ERREXIT(dinfo->cinfo, JERR_FILE_WRITE); dinfo->bytesinpkt = 0; } } /* Add a character to current packet; flush to disk if necessary */ #define CHAR_OUT(dinfo,c) \ { (dinfo)->packetbuf[++(dinfo)->bytesinpkt] = (char) (c); \ if ((dinfo)->bytesinpkt >= 255) \ flush_packet(dinfo); \ } /* Routine to convert variable-width codes into a byte stream */ LOCAL(void) output (gif_dest_ptr dinfo, int code) /* Emit a code of n_bits bits */ /* Uses cur_accum and cur_bits to reblock into 8-bit bytes */ { dinfo->cur_accum |= ((INT32) code) << dinfo->cur_bits; dinfo->cur_bits += dinfo->n_bits; while (dinfo->cur_bits >= 8) { CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF); dinfo->cur_accum >>= 8; dinfo->cur_bits -= 8; } } /* The pseudo-compression algorithm. * * In this module we simply output each pixel value as a separate symbol; * thus, no compression occurs. In fact, there is expansion of one bit per * pixel, because we use a symbol width one bit wider than the pixel width. * * GIF ordinarily uses variable-width symbols, and the decoder will expect * to ratchet up the symbol width after a fixed number of symbols. * To simplify the logic and keep the expansion penalty down, we emit a * GIF Clear code to reset the decoder just before the width would ratchet up. * Thus, all the symbols in the output file will have the same bit width. * Note that emitting the Clear codes at the right times is a mere matter of * counting output symbols and is in no way dependent on the LZW patent. * * With a small basic pixel width (low color count), Clear codes will be * needed very frequently, causing the file to expand even more. So this * simplistic approach wouldn't work too well on bilevel images, for example. * But for output of JPEG conversions the pixel width will usually be 8 bits * (129 to 256 colors), so the overhead added by Clear symbols is only about * one symbol in every 256. */ LOCAL(void) compress_init (gif_dest_ptr dinfo, int i_bits) /* Initialize pseudo-compressor */ { /* init all the state variables */ dinfo->n_bits = i_bits; dinfo->maxcode = MAXCODE(dinfo->n_bits); dinfo->ClearCode = (1 << (i_bits - 1)); dinfo->EOFCode = dinfo->ClearCode + 1; dinfo->code_counter = dinfo->ClearCode + 2; /* init output buffering vars */ dinfo->bytesinpkt = 0; dinfo->cur_accum = 0; dinfo->cur_bits = 0; /* GIF specifies an initial Clear code */ output(dinfo, dinfo->ClearCode); } LOCAL(void) compress_pixel (gif_dest_ptr dinfo, int c) /* Accept and "compress" one pixel value. * The given value must be less than n_bits wide. */ { /* Output the given pixel value as a symbol. */ output(dinfo, c); /* Issue Clear codes often enough to keep the reader from ratcheting up * its symbol size. */ if (dinfo->code_counter < dinfo->maxcode) { dinfo->code_counter++; } else { output(dinfo, dinfo->ClearCode); dinfo->code_counter = dinfo->ClearCode + 2; /* reset the counter */ } } LOCAL(void) compress_term (gif_dest_ptr dinfo) /* Clean up at end */ { /* Send an EOF code */ output(dinfo, dinfo->EOFCode); /* Flush the bit-packing buffer */ if (dinfo->cur_bits > 0) { CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF); } /* Flush the packet buffer */ flush_packet(dinfo); } /* GIF header construction */ LOCAL(void) put_word (gif_dest_ptr dinfo, unsigned int w) /* Emit a 16-bit word, LSB first */ { putc(w & 0xFF, dinfo->pub.output_file); putc((w >> 8) & 0xFF, dinfo->pub.output_file); } LOCAL(void) put_3bytes (gif_dest_ptr dinfo, int val) /* Emit 3 copies of same byte value --- handy subr for colormap construction */ { putc(val, dinfo->pub.output_file); putc(val, dinfo->pub.output_file); putc(val, dinfo->pub.output_file); } LOCAL(void) emit_header (gif_dest_ptr dinfo, int num_colors, JSAMPARRAY colormap) /* Output the GIF file header, including color map */ /* If colormap==NULL, synthesize a gray-scale colormap */ { int BitsPerPixel, ColorMapSize, InitCodeSize, FlagByte; int cshift = dinfo->cinfo->data_precision - 8; int i; if (num_colors > 256) ERREXIT1(dinfo->cinfo, JERR_TOO_MANY_COLORS, num_colors); /* Compute bits/pixel and related values */ BitsPerPixel = 1; while (num_colors > (1 << BitsPerPixel)) BitsPerPixel++; ColorMapSize = 1 << BitsPerPixel; if (BitsPerPixel <= 1) InitCodeSize = 2; else InitCodeSize = BitsPerPixel; /* * Write the GIF header. * Note that we generate a plain GIF87 header for maximum compatibility. */ putc('G', dinfo->pub.output_file); putc('I', dinfo->pub.output_file); putc('F', dinfo->pub.output_file); putc('8', dinfo->pub.output_file); putc('7', dinfo->pub.output_file); putc('a', dinfo->pub.output_file); /* Write the Logical Screen Descriptor */ put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); put_word(dinfo, (unsigned int) dinfo->cinfo->output_height); FlagByte = 0x80; /* Yes, there is a global color table */ FlagByte |= (BitsPerPixel-1) << 4; /* color resolution */ FlagByte |= (BitsPerPixel-1); /* size of global color table */ putc(FlagByte, dinfo->pub.output_file); putc(0, dinfo->pub.output_file); /* Background color index */ putc(0, dinfo->pub.output_file); /* Reserved (aspect ratio in GIF89) */ /* Write the Global Color Map */ /* If the color map is more than 8 bits precision, */ /* we reduce it to 8 bits by shifting */ for (i=0; i < ColorMapSize; i++) { if (i < num_colors) { if (colormap != NULL) { if (dinfo->cinfo->out_color_space == JCS_RGB) { /* Normal case: RGB color map */ putc(GETJSAMPLE(colormap[0][i]) >> cshift, dinfo->pub.output_file); putc(GETJSAMPLE(colormap[1][i]) >> cshift, dinfo->pub.output_file); putc(GETJSAMPLE(colormap[2][i]) >> cshift, dinfo->pub.output_file); } else { /* Grayscale "color map": possible if quantizing grayscale image */ put_3bytes(dinfo, GETJSAMPLE(colormap[0][i]) >> cshift); } } else { /* Create a gray-scale map of num_colors values, range 0..255 */ put_3bytes(dinfo, (i * 255 + (num_colors-1)/2) / (num_colors-1)); } } else { /* fill out the map to a power of 2 */ put_3bytes(dinfo, 0); } } /* Write image separator and Image Descriptor */ putc(',', dinfo->pub.output_file); /* separator */ put_word(dinfo, 0); /* left/top offset */ put_word(dinfo, 0); put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); /* image size */ put_word(dinfo, (unsigned int) dinfo->cinfo->output_height); /* flag byte: not interlaced, no local color map */ putc(0x00, dinfo->pub.output_file); /* Write Initial Code Size byte */ putc(InitCodeSize, dinfo->pub.output_file); /* Initialize for "compression" of image data */ compress_init(dinfo, InitCodeSize+1); } /* * Startup: write the file header. */ METHODDEF(void) start_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { gif_dest_ptr dest = (gif_dest_ptr) dinfo; if (cinfo->quantize_colors) emit_header(dest, cinfo->actual_number_of_colors, cinfo->colormap); else emit_header(dest, 256, (JSAMPARRAY) NULL); } /* * Write some pixel data. * In this module rows_supplied will always be 1. */ METHODDEF(void) put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) { gif_dest_ptr dest = (gif_dest_ptr) dinfo; register JSAMPROW ptr; register JDIMENSION col; ptr = dest->pub.buffer[0]; for (col = cinfo->output_width; col > 0; col--) { compress_pixel(dest, GETJSAMPLE(*ptr++)); } } /* * Finish up at the end of the file. */ METHODDEF(void) finish_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { gif_dest_ptr dest = (gif_dest_ptr) dinfo; /* Flush "compression" mechanism */ compress_term(dest); /* Write a zero-length data block to end the series */ putc(0, dest->pub.output_file); /* Write the GIF terminator mark */ putc(';', dest->pub.output_file); /* Make sure we wrote the output file OK */ fflush(dest->pub.output_file); if (ferror(dest->pub.output_file)) ERREXIT(cinfo, JERR_FILE_WRITE); } /* * The module selection routine for GIF format output. */ GLOBAL(djpeg_dest_ptr) jinit_write_gif (j_decompress_ptr cinfo) { gif_dest_ptr dest; /* Create module interface object, fill in method pointers */ dest = (gif_dest_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(gif_dest_struct)); dest->cinfo = cinfo; /* make back link for subroutines */ dest->pub.start_output = start_output_gif; dest->pub.put_pixel_rows = put_pixel_rows; dest->pub.finish_output = finish_output_gif; if (cinfo->out_color_space != JCS_GRAYSCALE && cinfo->out_color_space != JCS_RGB) ERREXIT(cinfo, JERR_GIF_COLORSPACE); /* Force quantization if color or if > 8 bits input */ if (cinfo->out_color_space != JCS_GRAYSCALE || cinfo->data_precision > 8) { /* Force quantization to at most 256 colors */ cinfo->quantize_colors = TRUE; if (cinfo->desired_number_of_colors > 256) cinfo->desired_number_of_colors = 256; } /* Calculate output image dimensions so we can allocate space */ jpeg_calc_output_dimensions(cinfo); if (cinfo->output_components != 1) /* safety check: just one component? */ ERREXIT(cinfo, JERR_GIF_BUG); /* Create decompressor output buffer. */ dest->pub.buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->output_width, (JDIMENSION) 1); dest->pub.buffer_height = 1; return (djpeg_dest_ptr) dest; } #endif /* GIF_SUPPORTED */ jpeg-8d1/config.sub0000755000175000017500000010516211674632475013032 0ustar billbill#! /bin/sh # Configuration validation subroutine script. # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, # 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, # 2011 Free Software Foundation, Inc. timestamp='2011-11-11' # This file is (in principle) common to ALL GNU software. # The presence of a machine in this file suggests that SOME GNU software # can handle that machine. 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Submit a context # diff and a properly formatted GNU ChangeLog entry. # # Configuration subroutine to validate and canonicalize a configuration type. # Supply the specified configuration type as an argument. # If it is invalid, we print an error message on stderr and exit with code 1. # Otherwise, we print the canonical config type on stdout and succeed. # You can get the latest version of this script from: # http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD # This file is supposed to be the same for all GNU packages # and recognize all the CPU types, system types and aliases # that are meaningful with *any* GNU software. # Each package is responsible for reporting which valid configurations # it does not support. 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There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." help=" Try \`$me --help' for more information." # Parse command line while test $# -gt 0 ; do case $1 in --time-stamp | --time* | -t ) echo "$timestamp" ; exit ;; --version | -v ) echo "$version" ; exit ;; --help | --h* | -h ) echo "$usage"; exit ;; -- ) # Stop option processing shift; break ;; - ) # Use stdin as input. break ;; -* ) echo "$me: invalid option $1$help" exit 1 ;; *local*) # First pass through any local machine types. echo $1 exit ;; * ) break ;; esac done case $# in 0) echo "$me: missing argument$help" >&2 exit 1;; 1) ;; *) echo "$me: too many arguments$help" >&2 exit 1;; esac # Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). # Here we must recognize all the valid KERNEL-OS combinations. maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` case $maybe_os in nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \ knetbsd*-gnu* | netbsd*-gnu* | \ kopensolaris*-gnu* | \ storm-chaos* | os2-emx* | rtmk-nova*) os=-$maybe_os basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` ;; *) basic_machine=`echo $1 | sed 's/-[^-]*$//'` if [ $basic_machine != $1 ] then os=`echo $1 | sed 's/.*-/-/'` else os=; fi ;; esac ### Let's recognize common machines as not being operating systems so ### that things like config.sub decstation-3100 work. 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-sco5) os=-sco3.2v5 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco4) os=-sco3.2v4 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2.[4-9]*) os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2v[4-9]*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5v6*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco*) os=-sco3.2v2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -udk*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -isc) os=-isc2.2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -clix*) basic_machine=clipper-intergraph ;; -isc*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -lynx*) os=-lynxos ;; -ptx*) basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` ;; -windowsnt*) os=`echo $os | sed -e 's/windowsnt/winnt/'` ;; -psos*) os=-psos ;; -mint | -mint[0-9]*) basic_machine=m68k-atari os=-mint ;; esac # Decode aliases for certain CPU-COMPANY combinations. case $basic_machine in # Recognize the basic CPU types without company name. # Some are omitted here because they have special meanings below. 1750a | 580 \ | a29k \ | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ | am33_2.0 \ | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \ | be32 | be64 \ | bfin \ | c4x | clipper \ | d10v | d30v | dlx | dsp16xx \ | epiphany \ | fido | fr30 | frv \ | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ | hexagon \ | i370 | i860 | i960 | ia64 \ | ip2k | iq2000 \ | le32 | le64 \ | lm32 \ | m32c | m32r | m32rle | m68000 | m68k | m88k \ | maxq | mb | microblaze | mcore | mep | metag \ | mips | mipsbe | mipseb | mipsel | mipsle \ | mips16 \ | mips64 | mips64el \ | mips64octeon | mips64octeonel \ | mips64orion | mips64orionel \ | mips64r5900 | mips64r5900el \ | mips64vr | mips64vrel \ | mips64vr4100 | mips64vr4100el \ | mips64vr4300 | mips64vr4300el \ | mips64vr5000 | mips64vr5000el \ | mips64vr5900 | mips64vr5900el \ | mipsisa32 | mipsisa32el \ | mipsisa32r2 | mipsisa32r2el \ | mipsisa64 | mipsisa64el \ | mipsisa64r2 | mipsisa64r2el \ | mipsisa64sb1 | mipsisa64sb1el \ | mipsisa64sr71k | mipsisa64sr71kel \ | mipstx39 | mipstx39el \ | mn10200 | mn10300 \ | moxie \ | mt \ | msp430 \ | nds32 | nds32le | nds32be \ | nios | nios2 \ | ns16k | ns32k \ | open8 \ | or32 \ | pdp10 | pdp11 | pj | pjl \ | powerpc | powerpc64 | powerpc64le | powerpcle \ | pyramid \ | rl78 | rx \ | score \ | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ | sh64 | sh64le \ | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ | spu \ | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \ | ubicom32 \ | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \ | we32k \ | x86 | xc16x | xstormy16 | xtensa \ | z8k | z80) basic_machine=$basic_machine-unknown ;; c54x) basic_machine=tic54x-unknown ;; c55x) basic_machine=tic55x-unknown ;; c6x) basic_machine=tic6x-unknown ;; m6811 | m68hc11 | m6812 | m68hc12 | picochip) # Motorola 68HC11/12. basic_machine=$basic_machine-unknown os=-none ;; m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) ;; ms1) basic_machine=mt-unknown ;; strongarm | thumb | xscale) basic_machine=arm-unknown ;; xscaleeb) basic_machine=armeb-unknown ;; xscaleel) basic_machine=armel-unknown ;; # We use `pc' rather than `unknown' # because (1) that's what they normally are, and # (2) the word "unknown" tends to confuse beginning users. i*86 | x86_64) basic_machine=$basic_machine-pc ;; # Object if more than one company name word. *-*-*) echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 exit 1 ;; # Recognize the basic CPU types with company name. 580-* \ | a29k-* \ | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \ | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ | avr-* | avr32-* \ | be32-* | be64-* \ | bfin-* | bs2000-* \ | c[123]* | c30-* | [cjt]90-* | c4x-* \ | clipper-* | craynv-* | cydra-* \ | d10v-* | d30v-* | dlx-* \ | elxsi-* \ | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ | h8300-* | h8500-* \ | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ | hexagon-* \ | i*86-* | i860-* | i960-* | ia64-* \ | ip2k-* | iq2000-* \ | le32-* | le64-* \ | lm32-* \ | m32c-* | m32r-* | m32rle-* \ | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ | m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \ | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ | mips16-* \ | mips64-* | mips64el-* \ | mips64octeon-* | mips64octeonel-* \ | mips64orion-* | mips64orionel-* \ | mips64r5900-* | mips64r5900el-* \ | mips64vr-* | mips64vrel-* \ | mips64vr4100-* | mips64vr4100el-* \ | mips64vr4300-* | mips64vr4300el-* \ | mips64vr5000-* | mips64vr5000el-* \ | mips64vr5900-* | mips64vr5900el-* \ | mipsisa32-* | mipsisa32el-* \ | mipsisa32r2-* | mipsisa32r2el-* \ | mipsisa64-* | mipsisa64el-* \ | mipsisa64r2-* | mipsisa64r2el-* \ | mipsisa64sb1-* | mipsisa64sb1el-* \ | mipsisa64sr71k-* | mipsisa64sr71kel-* \ | mipstx39-* | mipstx39el-* \ | mmix-* \ | mt-* \ | msp430-* \ | nds32-* | nds32le-* | nds32be-* \ | nios-* | nios2-* \ | none-* | np1-* | ns16k-* | ns32k-* \ | open8-* \ | orion-* \ | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \ | pyramid-* \ | rl78-* | romp-* | rs6000-* | rx-* \ | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ | sparclite-* \ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \ | tahoe-* \ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ | tile*-* \ | tron-* \ | ubicom32-* \ | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \ | vax-* \ | we32k-* \ | x86-* | x86_64-* | xc16x-* | xps100-* \ | xstormy16-* | xtensa*-* \ | ymp-* \ | z8k-* | z80-*) ;; # Recognize the basic CPU types without company name, with glob match. xtensa*) basic_machine=$basic_machine-unknown ;; # Recognize the various machine names and aliases which stand # for a CPU type and a company and sometimes even an OS. 386bsd) basic_machine=i386-unknown os=-bsd ;; 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) basic_machine=m68000-att ;; 3b*) basic_machine=we32k-att ;; a29khif) basic_machine=a29k-amd os=-udi ;; abacus) basic_machine=abacus-unknown ;; adobe68k) basic_machine=m68010-adobe os=-scout ;; alliant | fx80) basic_machine=fx80-alliant ;; altos | altos3068) basic_machine=m68k-altos ;; am29k) basic_machine=a29k-none os=-bsd ;; amd64) basic_machine=x86_64-pc ;; amd64-*) basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` ;; amdahl) basic_machine=580-amdahl os=-sysv ;; amiga | amiga-*) basic_machine=m68k-unknown ;; amigaos | amigados) basic_machine=m68k-unknown os=-amigaos ;; amigaunix | amix) basic_machine=m68k-unknown os=-sysv4 ;; apollo68) basic_machine=m68k-apollo os=-sysv ;; apollo68bsd) basic_machine=m68k-apollo os=-bsd ;; aros) basic_machine=i386-pc os=-aros ;; aux) basic_machine=m68k-apple os=-aux ;; balance) basic_machine=ns32k-sequent os=-dynix ;; blackfin) basic_machine=bfin-unknown os=-linux ;; blackfin-*) basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; bluegene*) basic_machine=powerpc-ibm os=-cnk ;; c54x-*) basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c55x-*) basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c6x-*) basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c90) basic_machine=c90-cray os=-unicos ;; cegcc) basic_machine=arm-unknown os=-cegcc ;; convex-c1) basic_machine=c1-convex os=-bsd ;; convex-c2) basic_machine=c2-convex os=-bsd ;; convex-c32) basic_machine=c32-convex os=-bsd ;; convex-c34) basic_machine=c34-convex os=-bsd ;; convex-c38) basic_machine=c38-convex os=-bsd ;; cray | j90) basic_machine=j90-cray os=-unicos ;; craynv) basic_machine=craynv-cray os=-unicosmp ;; cr16 | cr16-*) basic_machine=cr16-unknown os=-elf ;; crds | unos) basic_machine=m68k-crds ;; crisv32 | crisv32-* | etraxfs*) basic_machine=crisv32-axis ;; cris | cris-* | etrax*) basic_machine=cris-axis ;; crx) basic_machine=crx-unknown os=-elf ;; da30 | da30-*) basic_machine=m68k-da30 ;; decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) basic_machine=mips-dec ;; decsystem10* | dec10*) basic_machine=pdp10-dec os=-tops10 ;; decsystem20* | dec20*) basic_machine=pdp10-dec os=-tops20 ;; delta | 3300 | motorola-3300 | motorola-delta \ | 3300-motorola | delta-motorola) basic_machine=m68k-motorola ;; delta88) basic_machine=m88k-motorola os=-sysv3 ;; dicos) basic_machine=i686-pc os=-dicos ;; djgpp) basic_machine=i586-pc os=-msdosdjgpp ;; dpx20 | dpx20-*) basic_machine=rs6000-bull os=-bosx ;; dpx2* | dpx2*-bull) basic_machine=m68k-bull os=-sysv3 ;; ebmon29k) basic_machine=a29k-amd os=-ebmon ;; elxsi) basic_machine=elxsi-elxsi os=-bsd ;; encore | umax | mmax) basic_machine=ns32k-encore ;; es1800 | OSE68k | ose68k | ose | OSE) basic_machine=m68k-ericsson os=-ose ;; fx2800) basic_machine=i860-alliant ;; genix) basic_machine=ns32k-ns ;; gmicro) basic_machine=tron-gmicro os=-sysv ;; go32) basic_machine=i386-pc os=-go32 ;; h3050r* | hiux*) basic_machine=hppa1.1-hitachi os=-hiuxwe2 ;; h8300hms) basic_machine=h8300-hitachi os=-hms ;; h8300xray) basic_machine=h8300-hitachi os=-xray ;; h8500hms) basic_machine=h8500-hitachi os=-hms ;; harris) basic_machine=m88k-harris os=-sysv3 ;; hp300-*) basic_machine=m68k-hp ;; hp300bsd) basic_machine=m68k-hp os=-bsd ;; hp300hpux) basic_machine=m68k-hp os=-hpux ;; hp3k9[0-9][0-9] | hp9[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k2[0-9][0-9] | hp9k31[0-9]) basic_machine=m68000-hp ;; hp9k3[2-9][0-9]) basic_machine=m68k-hp ;; hp9k6[0-9][0-9] | hp6[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k7[0-79][0-9] | hp7[0-79][0-9]) basic_machine=hppa1.1-hp ;; hp9k78[0-9] | hp78[0-9]) # FIXME: really hppa2.0-hp basic_machine=hppa1.1-hp ;; hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) # FIXME: really hppa2.0-hp basic_machine=hppa1.1-hp ;; hp9k8[0-9][13679] | hp8[0-9][13679]) basic_machine=hppa1.1-hp ;; hp9k8[0-9][0-9] | hp8[0-9][0-9]) basic_machine=hppa1.0-hp ;; hppa-next) os=-nextstep3 ;; hppaosf) basic_machine=hppa1.1-hp os=-osf ;; hppro) basic_machine=hppa1.1-hp os=-proelf ;; i370-ibm* | ibm*) basic_machine=i370-ibm ;; # I'm not sure what "Sysv32" means. Should this be sysv3.2? i*86v32) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-sysv32 ;; i*86v4*) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-sysv4 ;; i*86v) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-sysv ;; i*86sol2) basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` os=-solaris2 ;; i386mach) basic_machine=i386-mach os=-mach ;; i386-vsta | vsta) basic_machine=i386-unknown os=-vsta ;; iris | iris4d) basic_machine=mips-sgi case $os in -irix*) ;; *) os=-irix4 ;; esac ;; isi68 | isi) basic_machine=m68k-isi os=-sysv ;; m68knommu) basic_machine=m68k-unknown os=-linux ;; m68knommu-*) basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; m88k-omron*) basic_machine=m88k-omron ;; magnum | m3230) basic_machine=mips-mips os=-sysv ;; merlin) basic_machine=ns32k-utek os=-sysv ;; microblaze) basic_machine=microblaze-xilinx ;; mingw32) basic_machine=i386-pc os=-mingw32 ;; mingw32ce) basic_machine=arm-unknown os=-mingw32ce ;; miniframe) basic_machine=m68000-convergent ;; *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*) basic_machine=m68k-atari os=-mint ;; mips3*-*) basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'` ;; mips3*) basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown ;; monitor) basic_machine=m68k-rom68k os=-coff ;; morphos) basic_machine=powerpc-unknown os=-morphos ;; msdos) basic_machine=i386-pc os=-msdos ;; ms1-*) basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'` ;; msys) basic_machine=i386-pc os=-msys ;; mvs) basic_machine=i370-ibm os=-mvs ;; nacl) basic_machine=le32-unknown os=-nacl ;; ncr3000) basic_machine=i486-ncr os=-sysv4 ;; netbsd386) basic_machine=i386-unknown os=-netbsd ;; netwinder) basic_machine=armv4l-rebel os=-linux ;; news | news700 | news800 | news900) basic_machine=m68k-sony os=-newsos ;; news1000) basic_machine=m68030-sony os=-newsos ;; news-3600 | risc-news) basic_machine=mips-sony os=-newsos ;; necv70) basic_machine=v70-nec os=-sysv ;; next | m*-next ) basic_machine=m68k-next case $os in -nextstep* ) ;; -ns2*) os=-nextstep2 ;; *) os=-nextstep3 ;; esac ;; nh3000) basic_machine=m68k-harris os=-cxux ;; nh[45]000) basic_machine=m88k-harris os=-cxux ;; nindy960) basic_machine=i960-intel os=-nindy ;; mon960) basic_machine=i960-intel os=-mon960 ;; nonstopux) basic_machine=mips-compaq os=-nonstopux ;; np1) basic_machine=np1-gould ;; neo-tandem) basic_machine=neo-tandem ;; nse-tandem) basic_machine=nse-tandem ;; nsr-tandem) basic_machine=nsr-tandem ;; op50n-* | op60c-*) basic_machine=hppa1.1-oki os=-proelf ;; openrisc | openrisc-*) basic_machine=or32-unknown ;; os400) basic_machine=powerpc-ibm os=-os400 ;; OSE68000 | ose68000) basic_machine=m68000-ericsson os=-ose ;; os68k) basic_machine=m68k-none os=-os68k ;; pa-hitachi) basic_machine=hppa1.1-hitachi os=-hiuxwe2 ;; paragon) basic_machine=i860-intel os=-osf ;; parisc) basic_machine=hppa-unknown os=-linux ;; parisc-*) basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; pbd) basic_machine=sparc-tti ;; pbb) basic_machine=m68k-tti ;; pc532 | pc532-*) basic_machine=ns32k-pc532 ;; pc98) basic_machine=i386-pc ;; pc98-*) basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'` ;; pentium | p5 | k5 | k6 | nexgen | viac3) basic_machine=i586-pc ;; pentiumpro | p6 | 6x86 | athlon | athlon_*) basic_machine=i686-pc ;; pentiumii | pentium2 | pentiumiii | pentium3) basic_machine=i686-pc ;; pentium4) basic_machine=i786-pc ;; pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*) basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'` ;; pentiumpro-* | p6-* | 6x86-* | athlon-*) basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` ;; pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*) basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` ;; pentium4-*) basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'` ;; pn) basic_machine=pn-gould ;; power) basic_machine=power-ibm ;; ppc | ppcbe) basic_machine=powerpc-unknown ;; ppc-* | ppcbe-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'` ;; ppcle | powerpclittle | ppc-le | powerpc-little) basic_machine=powerpcle-unknown ;; ppcle-* | powerpclittle-*) basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'` ;; ppc64) basic_machine=powerpc64-unknown ;; ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'` ;; ppc64le | powerpc64little | ppc64-le | powerpc64-little) basic_machine=powerpc64le-unknown ;; ppc64le-* | powerpc64little-*) basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'` ;; ps2) basic_machine=i386-ibm ;; pw32) basic_machine=i586-unknown os=-pw32 ;; rdos) basic_machine=i386-pc os=-rdos ;; rom68k) basic_machine=m68k-rom68k os=-coff ;; rm[46]00) basic_machine=mips-siemens ;; rtpc | rtpc-*) basic_machine=romp-ibm ;; s390 | s390-*) basic_machine=s390-ibm ;; s390x | s390x-*) basic_machine=s390x-ibm ;; sa29200) basic_machine=a29k-amd os=-udi ;; sb1) basic_machine=mipsisa64sb1-unknown ;; sb1el) basic_machine=mipsisa64sb1el-unknown ;; sde) basic_machine=mipsisa32-sde os=-elf ;; sei) basic_machine=mips-sei os=-seiux ;; sequent) basic_machine=i386-sequent ;; sh) basic_machine=sh-hitachi os=-hms ;; sh5el) basic_machine=sh5le-unknown ;; sh64) basic_machine=sh64-unknown ;; sparclite-wrs | simso-wrs) basic_machine=sparclite-wrs os=-vxworks ;; sps7) basic_machine=m68k-bull os=-sysv2 ;; spur) basic_machine=spur-unknown ;; st2000) basic_machine=m68k-tandem ;; stratus) basic_machine=i860-stratus os=-sysv4 ;; strongarm-* | thumb-*) basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'` ;; sun2) basic_machine=m68000-sun ;; sun2os3) basic_machine=m68000-sun os=-sunos3 ;; sun2os4) basic_machine=m68000-sun os=-sunos4 ;; sun3os3) basic_machine=m68k-sun os=-sunos3 ;; sun3os4) basic_machine=m68k-sun os=-sunos4 ;; sun4os3) basic_machine=sparc-sun os=-sunos3 ;; sun4os4) basic_machine=sparc-sun os=-sunos4 ;; sun4sol2) basic_machine=sparc-sun os=-solaris2 ;; sun3 | sun3-*) basic_machine=m68k-sun ;; sun4) basic_machine=sparc-sun ;; sun386 | sun386i | roadrunner) basic_machine=i386-sun ;; sv1) basic_machine=sv1-cray os=-unicos ;; symmetry) basic_machine=i386-sequent os=-dynix ;; t3e) basic_machine=alphaev5-cray os=-unicos ;; t90) basic_machine=t90-cray os=-unicos ;; tile*) basic_machine=$basic_machine-unknown os=-linux-gnu ;; tx39) basic_machine=mipstx39-unknown ;; tx39el) basic_machine=mipstx39el-unknown ;; toad1) basic_machine=pdp10-xkl os=-tops20 ;; tower | tower-32) basic_machine=m68k-ncr ;; tpf) basic_machine=s390x-ibm os=-tpf ;; udi29k) basic_machine=a29k-amd os=-udi ;; ultra3) basic_machine=a29k-nyu os=-sym1 ;; v810 | necv810) basic_machine=v810-nec os=-none ;; vaxv) basic_machine=vax-dec os=-sysv ;; vms) basic_machine=vax-dec os=-vms ;; vpp*|vx|vx-*) basic_machine=f301-fujitsu ;; vxworks960) basic_machine=i960-wrs os=-vxworks ;; vxworks68) basic_machine=m68k-wrs os=-vxworks ;; vxworks29k) basic_machine=a29k-wrs os=-vxworks ;; w65*) basic_machine=w65-wdc os=-none ;; w89k-*) basic_machine=hppa1.1-winbond os=-proelf ;; xbox) basic_machine=i686-pc os=-mingw32 ;; xps | xps100) basic_machine=xps100-honeywell ;; xscale-* | xscalee[bl]-*) basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'` ;; ymp) basic_machine=ymp-cray os=-unicos ;; z8k-*-coff) basic_machine=z8k-unknown os=-sim ;; z80-*-coff) basic_machine=z80-unknown os=-sim ;; none) basic_machine=none-none os=-none ;; # Here we handle the default manufacturer of certain CPU types. It is in # some cases the only manufacturer, in others, it is the most popular. w89k) basic_machine=hppa1.1-winbond ;; op50n) basic_machine=hppa1.1-oki ;; op60c) basic_machine=hppa1.1-oki ;; romp) basic_machine=romp-ibm ;; mmix) basic_machine=mmix-knuth ;; rs6000) basic_machine=rs6000-ibm ;; vax) basic_machine=vax-dec ;; pdp10) # there are many clones, so DEC is not a safe bet basic_machine=pdp10-unknown ;; pdp11) basic_machine=pdp11-dec ;; we32k) basic_machine=we32k-att ;; sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele) basic_machine=sh-unknown ;; sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v) basic_machine=sparc-sun ;; cydra) basic_machine=cydra-cydrome ;; orion) basic_machine=orion-highlevel ;; orion105) basic_machine=clipper-highlevel ;; mac | mpw | mac-mpw) basic_machine=m68k-apple ;; pmac | pmac-mpw) basic_machine=powerpc-apple ;; *-unknown) # Make sure to match an already-canonicalized machine name. ;; *) echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 exit 1 ;; esac # Here we canonicalize certain aliases for manufacturers. case $basic_machine in *-digital*) basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'` ;; *-commodore*) basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'` ;; *) ;; esac # Decode manufacturer-specific aliases for certain operating systems. if [ x"$os" != x"" ] then case $os in # First match some system type aliases # that might get confused with valid system types. # -solaris* is a basic system type, with this one exception. -auroraux) os=-auroraux ;; -solaris1 | -solaris1.*) os=`echo $os | sed -e 's|solaris1|sunos4|'` ;; -solaris) os=-solaris2 ;; -svr4*) os=-sysv4 ;; -unixware*) os=-sysv4.2uw ;; -gnu/linux*) os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'` ;; # First accept the basic system types. # The portable systems comes first. # Each alternative MUST END IN A *, to match a version number. # -sysv* is not here because it comes later, after sysvr4. -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \ | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\ | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \ | -sym* | -kopensolaris* \ | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \ | -aos* | -aros* \ | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \ | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \ | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \ | -openbsd* | -solidbsd* \ | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \ | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \ | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \ | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \ | -chorusos* | -chorusrdb* | -cegcc* \ | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \ | -mingw32* | -linux-gnu* | -linux-android* \ | -linux-newlib* | -linux-uclibc* \ | -uxpv* | -beos* | -mpeix* | -udk* \ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \ | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \ | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \ | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \ | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \ | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*) # Remember, each alternative MUST END IN *, to match a version number. ;; -qnx*) case $basic_machine in x86-* | i*86-*) ;; *) os=-nto$os ;; esac ;; -nto-qnx*) ;; -nto*) os=`echo $os | sed -e 's|nto|nto-qnx|'` ;; -sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \ | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \ | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*) ;; -mac*) os=`echo $os | sed -e 's|mac|macos|'` ;; -linux-dietlibc) os=-linux-dietlibc ;; -linux*) os=`echo $os | sed -e 's|linux|linux-gnu|'` ;; -sunos5*) os=`echo $os | sed -e 's|sunos5|solaris2|'` ;; -sunos6*) os=`echo $os | sed -e 's|sunos6|solaris3|'` ;; -opened*) os=-openedition ;; -os400*) os=-os400 ;; -wince*) os=-wince ;; -osfrose*) os=-osfrose ;; -osf*) os=-osf ;; -utek*) os=-bsd ;; -dynix*) os=-bsd ;; -acis*) os=-aos ;; -atheos*) os=-atheos ;; -syllable*) os=-syllable ;; -386bsd) os=-bsd ;; -ctix* | -uts*) os=-sysv ;; -nova*) os=-rtmk-nova ;; -ns2 ) os=-nextstep2 ;; -nsk*) os=-nsk ;; # Preserve the version number of sinix5. -sinix5.*) os=`echo $os | sed -e 's|sinix|sysv|'` ;; -sinix*) os=-sysv4 ;; -tpf*) os=-tpf ;; -triton*) os=-sysv3 ;; -oss*) os=-sysv3 ;; -svr4) os=-sysv4 ;; -svr3) os=-sysv3 ;; -sysvr4) os=-sysv4 ;; # This must come after -sysvr4. -sysv*) ;; -ose*) os=-ose ;; -es1800*) os=-ose ;; -xenix) os=-xenix ;; -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) os=-mint ;; -aros*) os=-aros ;; -kaos*) os=-kaos ;; -zvmoe) os=-zvmoe ;; -dicos*) os=-dicos ;; -nacl*) ;; -none) ;; *) # Get rid of the `-' at the beginning of $os. os=`echo $os | sed 's/[^-]*-//'` echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2 exit 1 ;; esac else # Here we handle the default operating systems that come with various machines. # The value should be what the vendor currently ships out the door with their # machine or put another way, the most popular os provided with the machine. # Note that if you're going to try to match "-MANUFACTURER" here (say, # "-sun"), then you have to tell the case statement up towards the top # that MANUFACTURER isn't an operating system. Otherwise, code above # will signal an error saying that MANUFACTURER isn't an operating # system, and we'll never get to this point. case $basic_machine in score-*) os=-elf ;; spu-*) os=-elf ;; *-acorn) os=-riscix1.2 ;; arm*-rebel) os=-linux ;; arm*-semi) os=-aout ;; c4x-* | tic4x-*) os=-coff ;; tic54x-*) os=-coff ;; tic55x-*) os=-coff ;; tic6x-*) os=-coff ;; # This must come before the *-dec entry. pdp10-*) os=-tops20 ;; pdp11-*) os=-none ;; *-dec | vax-*) os=-ultrix4.2 ;; m68*-apollo) os=-domain ;; i386-sun) os=-sunos4.0.2 ;; m68000-sun) os=-sunos3 # This also exists in the configure program, but was not the # default. # os=-sunos4 ;; m68*-cisco) os=-aout ;; mep-*) os=-elf ;; mips*-cisco) os=-elf ;; mips*-*) os=-elf ;; or32-*) os=-coff ;; *-tti) # must be before sparc entry or we get the wrong os. os=-sysv3 ;; sparc-* | *-sun) os=-sunos4.1.1 ;; *-be) os=-beos ;; *-haiku) os=-haiku ;; *-ibm) os=-aix ;; *-knuth) os=-mmixware ;; *-wec) os=-proelf ;; *-winbond) os=-proelf ;; *-oki) os=-proelf ;; *-hp) os=-hpux ;; *-hitachi) os=-hiux ;; i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent) os=-sysv ;; *-cbm) os=-amigaos ;; *-dg) os=-dgux ;; *-dolphin) os=-sysv3 ;; m68k-ccur) os=-rtu ;; m88k-omron*) os=-luna ;; *-next ) os=-nextstep ;; *-sequent) os=-ptx ;; *-crds) os=-unos ;; *-ns) os=-genix ;; i370-*) os=-mvs ;; *-next) os=-nextstep3 ;; *-gould) os=-sysv ;; *-highlevel) os=-bsd ;; *-encore) os=-bsd ;; *-sgi) os=-irix ;; *-siemens) os=-sysv4 ;; *-masscomp) os=-rtu ;; f30[01]-fujitsu | f700-fujitsu) os=-uxpv ;; *-rom68k) os=-coff ;; *-*bug) os=-coff ;; *-apple) os=-macos ;; *-atari*) os=-mint ;; *) os=-none ;; esac fi # Here we handle the case where we know the os, and the CPU type, but not the # manufacturer. We pick the logical manufacturer. vendor=unknown case $basic_machine in *-unknown) case $os in -riscix*) vendor=acorn ;; -sunos*) vendor=sun ;; -cnk*|-aix*) vendor=ibm ;; -beos*) vendor=be ;; -hpux*) vendor=hp ;; -mpeix*) vendor=hp ;; -hiux*) vendor=hitachi ;; -unos*) vendor=crds ;; -dgux*) vendor=dg ;; -luna*) vendor=omron ;; -genix*) vendor=ns ;; -mvs* | -opened*) vendor=ibm ;; -os400*) vendor=ibm ;; -ptx*) vendor=sequent ;; -tpf*) vendor=ibm ;; -vxsim* | -vxworks* | -windiss*) vendor=wrs ;; -aux*) vendor=apple ;; -hms*) vendor=hitachi ;; -mpw* | -macos*) vendor=apple ;; -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*) vendor=atari ;; -vos*) vendor=stratus ;; esac basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"` ;; esac echo $basic_machine$os exit # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: jpeg-8d1/maketdep.vc60000644000175000017500000000121111174127244013233 0ustar billbill# Microsoft Developer Studio erstellte Abhngigkeitsdatei, einbezogen von jpegtran.mak .\cdjpeg.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\jpegtran.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ ".\jversion.h"\ ".\transupp.h"\ .\rdswitch.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\transupp.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ ".\transupp.h"\ jpeg-8d1/jcmaster.c0000644000175000017500000007522011513040174013001 0ustar billbill/* * jcmaster.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2003-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains master control logic for the JPEG compressor. * These routines are concerned with parameter validation, initial setup, * and inter-pass control (determining the number of passes and the work * to be done in each pass). */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Private state */ typedef enum { main_pass, /* input data, also do first output step */ huff_opt_pass, /* Huffman code optimization pass */ output_pass /* data output pass */ } c_pass_type; typedef struct { struct jpeg_comp_master pub; /* public fields */ c_pass_type pass_type; /* the type of the current pass */ int pass_number; /* # of passes completed */ int total_passes; /* total # of passes needed */ int scan_number; /* current index in scan_info[] */ } my_comp_master; typedef my_comp_master * my_master_ptr; /* * Support routines that do various essential calculations. */ /* * Compute JPEG image dimensions and related values. * NOTE: this is exported for possible use by application. * Hence it mustn't do anything that can't be done twice. */ GLOBAL(void) jpeg_calc_jpeg_dimensions (j_compress_ptr cinfo) /* Do computations that are needed before master selection phase */ { #ifdef DCT_SCALING_SUPPORTED /* Sanity check on input image dimensions to prevent overflow in * following calculation. * We do check jpeg_width and jpeg_height in initial_setup below, * but image_width and image_height can come from arbitrary data, * and we need some space for multiplication by block_size. */ if (((long) cinfo->image_width >> 24) || ((long) cinfo->image_height >> 24)) ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION); /* Compute actual JPEG image dimensions and DCT scaling choices. */ if (cinfo->scale_num >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/1 scaling */ cinfo->jpeg_width = cinfo->image_width * cinfo->block_size; cinfo->jpeg_height = cinfo->image_height * cinfo->block_size; cinfo->min_DCT_h_scaled_size = 1; cinfo->min_DCT_v_scaled_size = 1; } else if (cinfo->scale_num * 2 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/2 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 2L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 2L); cinfo->min_DCT_h_scaled_size = 2; cinfo->min_DCT_v_scaled_size = 2; } else if (cinfo->scale_num * 3 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/3 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 3L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 3L); cinfo->min_DCT_h_scaled_size = 3; cinfo->min_DCT_v_scaled_size = 3; } else if (cinfo->scale_num * 4 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/4 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 4L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 4L); cinfo->min_DCT_h_scaled_size = 4; cinfo->min_DCT_v_scaled_size = 4; } else if (cinfo->scale_num * 5 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/5 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 5L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 5L); cinfo->min_DCT_h_scaled_size = 5; cinfo->min_DCT_v_scaled_size = 5; } else if (cinfo->scale_num * 6 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/6 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 6L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 6L); cinfo->min_DCT_h_scaled_size = 6; cinfo->min_DCT_v_scaled_size = 6; } else if (cinfo->scale_num * 7 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/7 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 7L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 7L); cinfo->min_DCT_h_scaled_size = 7; cinfo->min_DCT_v_scaled_size = 7; } else if (cinfo->scale_num * 8 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/8 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 8L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 8L); cinfo->min_DCT_h_scaled_size = 8; cinfo->min_DCT_v_scaled_size = 8; } else if (cinfo->scale_num * 9 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/9 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 9L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 9L); cinfo->min_DCT_h_scaled_size = 9; cinfo->min_DCT_v_scaled_size = 9; } else if (cinfo->scale_num * 10 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/10 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 10L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 10L); cinfo->min_DCT_h_scaled_size = 10; cinfo->min_DCT_v_scaled_size = 10; } else if (cinfo->scale_num * 11 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/11 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 11L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 11L); cinfo->min_DCT_h_scaled_size = 11; cinfo->min_DCT_v_scaled_size = 11; } else if (cinfo->scale_num * 12 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/12 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 12L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 12L); cinfo->min_DCT_h_scaled_size = 12; cinfo->min_DCT_v_scaled_size = 12; } else if (cinfo->scale_num * 13 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/13 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 13L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 13L); cinfo->min_DCT_h_scaled_size = 13; cinfo->min_DCT_v_scaled_size = 13; } else if (cinfo->scale_num * 14 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/14 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 14L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 14L); cinfo->min_DCT_h_scaled_size = 14; cinfo->min_DCT_v_scaled_size = 14; } else if (cinfo->scale_num * 15 >= cinfo->scale_denom * cinfo->block_size) { /* Provide block_size/15 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 15L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 15L); cinfo->min_DCT_h_scaled_size = 15; cinfo->min_DCT_v_scaled_size = 15; } else { /* Provide block_size/16 scaling */ cinfo->jpeg_width = (JDIMENSION) jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 16L); cinfo->jpeg_height = (JDIMENSION) jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 16L); cinfo->min_DCT_h_scaled_size = 16; cinfo->min_DCT_v_scaled_size = 16; } #else /* !DCT_SCALING_SUPPORTED */ /* Hardwire it to "no scaling" */ cinfo->jpeg_width = cinfo->image_width; cinfo->jpeg_height = cinfo->image_height; cinfo->min_DCT_h_scaled_size = DCTSIZE; cinfo->min_DCT_v_scaled_size = DCTSIZE; #endif /* DCT_SCALING_SUPPORTED */ } LOCAL(void) jpeg_calc_trans_dimensions (j_compress_ptr cinfo) { if (cinfo->min_DCT_h_scaled_size != cinfo->min_DCT_v_scaled_size) ERREXIT2(cinfo, JERR_BAD_DCTSIZE, cinfo->min_DCT_h_scaled_size, cinfo->min_DCT_v_scaled_size); cinfo->block_size = cinfo->min_DCT_h_scaled_size; } LOCAL(void) initial_setup (j_compress_ptr cinfo, boolean transcode_only) /* Do computations that are needed before master selection phase */ { int ci, ssize; jpeg_component_info *compptr; long samplesperrow; JDIMENSION jd_samplesperrow; if (transcode_only) jpeg_calc_trans_dimensions(cinfo); else jpeg_calc_jpeg_dimensions(cinfo); /* Sanity check on block_size */ if (cinfo->block_size < 1 || cinfo->block_size > 16) ERREXIT2(cinfo, JERR_BAD_DCTSIZE, cinfo->block_size, cinfo->block_size); /* Derive natural_order from block_size */ switch (cinfo->block_size) { case 2: cinfo->natural_order = jpeg_natural_order2; break; case 3: cinfo->natural_order = jpeg_natural_order3; break; case 4: cinfo->natural_order = jpeg_natural_order4; break; case 5: cinfo->natural_order = jpeg_natural_order5; break; case 6: cinfo->natural_order = jpeg_natural_order6; break; case 7: cinfo->natural_order = jpeg_natural_order7; break; default: cinfo->natural_order = jpeg_natural_order; break; } /* Derive lim_Se from block_size */ cinfo->lim_Se = cinfo->block_size < DCTSIZE ? cinfo->block_size * cinfo->block_size - 1 : DCTSIZE2-1; /* Sanity check on image dimensions */ if (cinfo->jpeg_height <= 0 || cinfo->jpeg_width <= 0 || cinfo->num_components <= 0 || cinfo->input_components <= 0) ERREXIT(cinfo, JERR_EMPTY_IMAGE); /* Make sure image isn't bigger than I can handle */ if ((long) cinfo->jpeg_height > (long) JPEG_MAX_DIMENSION || (long) cinfo->jpeg_width > (long) JPEG_MAX_DIMENSION) ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION); /* Width of an input scanline must be representable as JDIMENSION. */ samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components; jd_samplesperrow = (JDIMENSION) samplesperrow; if ((long) jd_samplesperrow != samplesperrow) ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); /* For now, precision must match compiled-in value... */ if (cinfo->data_precision != BITS_IN_JSAMPLE) ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision); /* Check that number of components won't exceed internal array sizes */ if (cinfo->num_components > MAX_COMPONENTS) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, MAX_COMPONENTS); /* Compute maximum sampling factors; check factor validity */ cinfo->max_h_samp_factor = 1; cinfo->max_v_samp_factor = 1; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR || compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR) ERREXIT(cinfo, JERR_BAD_SAMPLING); cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor, compptr->h_samp_factor); cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor, compptr->v_samp_factor); } /* Compute dimensions of components */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Fill in the correct component_index value; don't rely on application */ compptr->component_index = ci; /* In selecting the actual DCT scaling for each component, we try to * scale down the chroma components via DCT scaling rather than downsampling. * This saves time if the downsampler gets to use 1:1 scaling. * Note this code adapts subsampling ratios which are powers of 2. */ ssize = 1; #ifdef DCT_SCALING_SUPPORTED while (cinfo->min_DCT_h_scaled_size * ssize <= (cinfo->do_fancy_downsampling ? DCTSIZE : DCTSIZE / 2) && (cinfo->max_h_samp_factor % (compptr->h_samp_factor * ssize * 2)) == 0) { ssize = ssize * 2; } #endif compptr->DCT_h_scaled_size = cinfo->min_DCT_h_scaled_size * ssize; ssize = 1; #ifdef DCT_SCALING_SUPPORTED while (cinfo->min_DCT_v_scaled_size * ssize <= (cinfo->do_fancy_downsampling ? DCTSIZE : DCTSIZE / 2) && (cinfo->max_v_samp_factor % (compptr->v_samp_factor * ssize * 2)) == 0) { ssize = ssize * 2; } #endif compptr->DCT_v_scaled_size = cinfo->min_DCT_v_scaled_size * ssize; /* We don't support DCT ratios larger than 2. */ if (compptr->DCT_h_scaled_size > compptr->DCT_v_scaled_size * 2) compptr->DCT_h_scaled_size = compptr->DCT_v_scaled_size * 2; else if (compptr->DCT_v_scaled_size > compptr->DCT_h_scaled_size * 2) compptr->DCT_v_scaled_size = compptr->DCT_h_scaled_size * 2; /* Size in DCT blocks */ compptr->width_in_blocks = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_width * (long) compptr->h_samp_factor, (long) (cinfo->max_h_samp_factor * cinfo->block_size)); compptr->height_in_blocks = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_height * (long) compptr->v_samp_factor, (long) (cinfo->max_v_samp_factor * cinfo->block_size)); /* Size in samples */ compptr->downsampled_width = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_width * (long) (compptr->h_samp_factor * compptr->DCT_h_scaled_size), (long) (cinfo->max_h_samp_factor * cinfo->block_size)); compptr->downsampled_height = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_height * (long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size), (long) (cinfo->max_v_samp_factor * cinfo->block_size)); /* Mark component needed (this flag isn't actually used for compression) */ compptr->component_needed = TRUE; } /* Compute number of fully interleaved MCU rows (number of times that * main controller will call coefficient controller). */ cinfo->total_iMCU_rows = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_height, (long) (cinfo->max_v_samp_factor * cinfo->block_size)); } #ifdef C_MULTISCAN_FILES_SUPPORTED LOCAL(void) validate_script (j_compress_ptr cinfo) /* Verify that the scan script in cinfo->scan_info[] is valid; also * determine whether it uses progressive JPEG, and set cinfo->progressive_mode. */ { const jpeg_scan_info * scanptr; int scanno, ncomps, ci, coefi, thisi; int Ss, Se, Ah, Al; boolean component_sent[MAX_COMPONENTS]; #ifdef C_PROGRESSIVE_SUPPORTED int * last_bitpos_ptr; int last_bitpos[MAX_COMPONENTS][DCTSIZE2]; /* -1 until that coefficient has been seen; then last Al for it */ #endif if (cinfo->num_scans <= 0) ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0); /* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1; * for progressive JPEG, no scan can have this. */ scanptr = cinfo->scan_info; if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2-1) { #ifdef C_PROGRESSIVE_SUPPORTED cinfo->progressive_mode = TRUE; last_bitpos_ptr = & last_bitpos[0][0]; for (ci = 0; ci < cinfo->num_components; ci++) for (coefi = 0; coefi < DCTSIZE2; coefi++) *last_bitpos_ptr++ = -1; #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif } else { cinfo->progressive_mode = FALSE; for (ci = 0; ci < cinfo->num_components; ci++) component_sent[ci] = FALSE; } for (scanno = 1; scanno <= cinfo->num_scans; scanptr++, scanno++) { /* Validate component indexes */ ncomps = scanptr->comps_in_scan; if (ncomps <= 0 || ncomps > MAX_COMPS_IN_SCAN) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, ncomps, MAX_COMPS_IN_SCAN); for (ci = 0; ci < ncomps; ci++) { thisi = scanptr->component_index[ci]; if (thisi < 0 || thisi >= cinfo->num_components) ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno); /* Components must appear in SOF order within each scan */ if (ci > 0 && thisi <= scanptr->component_index[ci-1]) ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno); } /* Validate progression parameters */ Ss = scanptr->Ss; Se = scanptr->Se; Ah = scanptr->Ah; Al = scanptr->Al; if (cinfo->progressive_mode) { #ifdef C_PROGRESSIVE_SUPPORTED /* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that * seems wrong: the upper bound ought to depend on data precision. * Perhaps they really meant 0..N+1 for N-bit precision. * Here we allow 0..10 for 8-bit data; Al larger than 10 results in * out-of-range reconstructed DC values during the first DC scan, * which might cause problems for some decoders. */ #if BITS_IN_JSAMPLE == 8 #define MAX_AH_AL 10 #else #define MAX_AH_AL 13 #endif if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 || Ah < 0 || Ah > MAX_AH_AL || Al < 0 || Al > MAX_AH_AL) ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); if (Ss == 0) { if (Se != 0) /* DC and AC together not OK */ ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); } else { if (ncomps != 1) /* AC scans must be for only one component */ ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); } for (ci = 0; ci < ncomps; ci++) { last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0]; if (Ss != 0 && last_bitpos_ptr[0] < 0) /* AC without prior DC scan */ ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); for (coefi = Ss; coefi <= Se; coefi++) { if (last_bitpos_ptr[coefi] < 0) { /* first scan of this coefficient */ if (Ah != 0) ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); } else { /* not first scan */ if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1) ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); } last_bitpos_ptr[coefi] = Al; } } #endif } else { /* For sequential JPEG, all progression parameters must be these: */ if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0) ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); /* Make sure components are not sent twice */ for (ci = 0; ci < ncomps; ci++) { thisi = scanptr->component_index[ci]; if (component_sent[thisi]) ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno); component_sent[thisi] = TRUE; } } } /* Now verify that everything got sent. */ if (cinfo->progressive_mode) { #ifdef C_PROGRESSIVE_SUPPORTED /* For progressive mode, we only check that at least some DC data * got sent for each component; the spec does not require that all bits * of all coefficients be transmitted. Would it be wiser to enforce * transmission of all coefficient bits?? */ for (ci = 0; ci < cinfo->num_components; ci++) { if (last_bitpos[ci][0] < 0) ERREXIT(cinfo, JERR_MISSING_DATA); } #endif } else { for (ci = 0; ci < cinfo->num_components; ci++) { if (! component_sent[ci]) ERREXIT(cinfo, JERR_MISSING_DATA); } } } LOCAL(void) reduce_script (j_compress_ptr cinfo) /* Adapt scan script for use with reduced block size; * assume that script has been validated before. */ { jpeg_scan_info * scanptr; int idxout, idxin; /* Circumvent const declaration for this function */ scanptr = (jpeg_scan_info *) cinfo->scan_info; idxout = 0; for (idxin = 0; idxin < cinfo->num_scans; idxin++) { /* After skipping, idxout becomes smaller than idxin */ if (idxin != idxout) /* Copy rest of data; * note we stay in given chunk of allocated memory. */ scanptr[idxout] = scanptr[idxin]; if (scanptr[idxout].Ss > cinfo->lim_Se) /* Entire scan out of range - skip this entry */ continue; if (scanptr[idxout].Se > cinfo->lim_Se) /* Limit scan to end of block */ scanptr[idxout].Se = cinfo->lim_Se; idxout++; } cinfo->num_scans = idxout; } #endif /* C_MULTISCAN_FILES_SUPPORTED */ LOCAL(void) select_scan_parameters (j_compress_ptr cinfo) /* Set up the scan parameters for the current scan */ { int ci; #ifdef C_MULTISCAN_FILES_SUPPORTED if (cinfo->scan_info != NULL) { /* Prepare for current scan --- the script is already validated */ my_master_ptr master = (my_master_ptr) cinfo->master; const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number; cinfo->comps_in_scan = scanptr->comps_in_scan; for (ci = 0; ci < scanptr->comps_in_scan; ci++) { cinfo->cur_comp_info[ci] = &cinfo->comp_info[scanptr->component_index[ci]]; } if (cinfo->progressive_mode) { cinfo->Ss = scanptr->Ss; cinfo->Se = scanptr->Se; cinfo->Ah = scanptr->Ah; cinfo->Al = scanptr->Al; return; } } else #endif { /* Prepare for single sequential-JPEG scan containing all components */ if (cinfo->num_components > MAX_COMPS_IN_SCAN) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, MAX_COMPS_IN_SCAN); cinfo->comps_in_scan = cinfo->num_components; for (ci = 0; ci < cinfo->num_components; ci++) { cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci]; } } cinfo->Ss = 0; cinfo->Se = cinfo->block_size * cinfo->block_size - 1; cinfo->Ah = 0; cinfo->Al = 0; } LOCAL(void) per_scan_setup (j_compress_ptr cinfo) /* Do computations that are needed before processing a JPEG scan */ /* cinfo->comps_in_scan and cinfo->cur_comp_info[] are already set */ { int ci, mcublks, tmp; jpeg_component_info *compptr; if (cinfo->comps_in_scan == 1) { /* Noninterleaved (single-component) scan */ compptr = cinfo->cur_comp_info[0]; /* Overall image size in MCUs */ cinfo->MCUs_per_row = compptr->width_in_blocks; cinfo->MCU_rows_in_scan = compptr->height_in_blocks; /* For noninterleaved scan, always one block per MCU */ compptr->MCU_width = 1; compptr->MCU_height = 1; compptr->MCU_blocks = 1; compptr->MCU_sample_width = compptr->DCT_h_scaled_size; compptr->last_col_width = 1; /* For noninterleaved scans, it is convenient to define last_row_height * as the number of block rows present in the last iMCU row. */ tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor); if (tmp == 0) tmp = compptr->v_samp_factor; compptr->last_row_height = tmp; /* Prepare array describing MCU composition */ cinfo->blocks_in_MCU = 1; cinfo->MCU_membership[0] = 0; } else { /* Interleaved (multi-component) scan */ if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan, MAX_COMPS_IN_SCAN); /* Overall image size in MCUs */ cinfo->MCUs_per_row = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_width, (long) (cinfo->max_h_samp_factor * cinfo->block_size)); cinfo->MCU_rows_in_scan = (JDIMENSION) jdiv_round_up((long) cinfo->jpeg_height, (long) (cinfo->max_v_samp_factor * cinfo->block_size)); cinfo->blocks_in_MCU = 0; for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* Sampling factors give # of blocks of component in each MCU */ compptr->MCU_width = compptr->h_samp_factor; compptr->MCU_height = compptr->v_samp_factor; compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height; compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_h_scaled_size; /* Figure number of non-dummy blocks in last MCU column & row */ tmp = (int) (compptr->width_in_blocks % compptr->MCU_width); if (tmp == 0) tmp = compptr->MCU_width; compptr->last_col_width = tmp; tmp = (int) (compptr->height_in_blocks % compptr->MCU_height); if (tmp == 0) tmp = compptr->MCU_height; compptr->last_row_height = tmp; /* Prepare array describing MCU composition */ mcublks = compptr->MCU_blocks; if (cinfo->blocks_in_MCU + mcublks > C_MAX_BLOCKS_IN_MCU) ERREXIT(cinfo, JERR_BAD_MCU_SIZE); while (mcublks-- > 0) { cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci; } } } /* Convert restart specified in rows to actual MCU count. */ /* Note that count must fit in 16 bits, so we provide limiting. */ if (cinfo->restart_in_rows > 0) { long nominal = (long) cinfo->restart_in_rows * (long) cinfo->MCUs_per_row; cinfo->restart_interval = (unsigned int) MIN(nominal, 65535L); } } /* * Per-pass setup. * This is called at the beginning of each pass. We determine which modules * will be active during this pass and give them appropriate start_pass calls. * We also set is_last_pass to indicate whether any more passes will be * required. */ METHODDEF(void) prepare_for_pass (j_compress_ptr cinfo) { my_master_ptr master = (my_master_ptr) cinfo->master; switch (master->pass_type) { case main_pass: /* Initial pass: will collect input data, and do either Huffman * optimization or data output for the first scan. */ select_scan_parameters(cinfo); per_scan_setup(cinfo); if (! cinfo->raw_data_in) { (*cinfo->cconvert->start_pass) (cinfo); (*cinfo->downsample->start_pass) (cinfo); (*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU); } (*cinfo->fdct->start_pass) (cinfo); (*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding); (*cinfo->coef->start_pass) (cinfo, (master->total_passes > 1 ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU)); (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU); if (cinfo->optimize_coding) { /* No immediate data output; postpone writing frame/scan headers */ master->pub.call_pass_startup = FALSE; } else { /* Will write frame/scan headers at first jpeg_write_scanlines call */ master->pub.call_pass_startup = TRUE; } break; #ifdef ENTROPY_OPT_SUPPORTED case huff_opt_pass: /* Do Huffman optimization for a scan after the first one. */ select_scan_parameters(cinfo); per_scan_setup(cinfo); if (cinfo->Ss != 0 || cinfo->Ah == 0) { (*cinfo->entropy->start_pass) (cinfo, TRUE); (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST); master->pub.call_pass_startup = FALSE; break; } /* Special case: Huffman DC refinement scans need no Huffman table * and therefore we can skip the optimization pass for them. */ master->pass_type = output_pass; master->pass_number++; /*FALLTHROUGH*/ #endif case output_pass: /* Do a data-output pass. */ /* We need not repeat per-scan setup if prior optimization pass did it. */ if (! cinfo->optimize_coding) { select_scan_parameters(cinfo); per_scan_setup(cinfo); } (*cinfo->entropy->start_pass) (cinfo, FALSE); (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST); /* We emit frame/scan headers now */ if (master->scan_number == 0) (*cinfo->marker->write_frame_header) (cinfo); (*cinfo->marker->write_scan_header) (cinfo); master->pub.call_pass_startup = FALSE; break; default: ERREXIT(cinfo, JERR_NOT_COMPILED); } master->pub.is_last_pass = (master->pass_number == master->total_passes-1); /* Set up progress monitor's pass info if present */ if (cinfo->progress != NULL) { cinfo->progress->completed_passes = master->pass_number; cinfo->progress->total_passes = master->total_passes; } } /* * Special start-of-pass hook. * This is called by jpeg_write_scanlines if call_pass_startup is TRUE. * In single-pass processing, we need this hook because we don't want to * write frame/scan headers during jpeg_start_compress; we want to let the * application write COM markers etc. between jpeg_start_compress and the * jpeg_write_scanlines loop. * In multi-pass processing, this routine is not used. */ METHODDEF(void) pass_startup (j_compress_ptr cinfo) { cinfo->master->call_pass_startup = FALSE; /* reset flag so call only once */ (*cinfo->marker->write_frame_header) (cinfo); (*cinfo->marker->write_scan_header) (cinfo); } /* * Finish up at end of pass. */ METHODDEF(void) finish_pass_master (j_compress_ptr cinfo) { my_master_ptr master = (my_master_ptr) cinfo->master; /* The entropy coder always needs an end-of-pass call, * either to analyze statistics or to flush its output buffer. */ (*cinfo->entropy->finish_pass) (cinfo); /* Update state for next pass */ switch (master->pass_type) { case main_pass: /* next pass is either output of scan 0 (after optimization) * or output of scan 1 (if no optimization). */ master->pass_type = output_pass; if (! cinfo->optimize_coding) master->scan_number++; break; case huff_opt_pass: /* next pass is always output of current scan */ master->pass_type = output_pass; break; case output_pass: /* next pass is either optimization or output of next scan */ if (cinfo->optimize_coding) master->pass_type = huff_opt_pass; master->scan_number++; break; } master->pass_number++; } /* * Initialize master compression control. */ GLOBAL(void) jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only) { my_master_ptr master; master = (my_master_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_comp_master)); cinfo->master = (struct jpeg_comp_master *) master; master->pub.prepare_for_pass = prepare_for_pass; master->pub.pass_startup = pass_startup; master->pub.finish_pass = finish_pass_master; master->pub.is_last_pass = FALSE; /* Validate parameters, determine derived values */ initial_setup(cinfo, transcode_only); if (cinfo->scan_info != NULL) { #ifdef C_MULTISCAN_FILES_SUPPORTED validate_script(cinfo); if (cinfo->block_size < DCTSIZE) reduce_script(cinfo); #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif } else { cinfo->progressive_mode = FALSE; cinfo->num_scans = 1; } if ((cinfo->progressive_mode || cinfo->block_size < DCTSIZE) && !cinfo->arith_code) /* TEMPORARY HACK ??? */ /* assume default tables no good for progressive or downscale mode */ cinfo->optimize_coding = TRUE; /* Initialize my private state */ if (transcode_only) { /* no main pass in transcoding */ if (cinfo->optimize_coding) master->pass_type = huff_opt_pass; else master->pass_type = output_pass; } else { /* for normal compression, first pass is always this type: */ master->pass_type = main_pass; } master->scan_number = 0; master->pass_number = 0; if (cinfo->optimize_coding) master->total_passes = cinfo->num_scans * 2; else master->total_passes = cinfo->num_scans; } jpeg-8d1/jdmarker.c0000644000175000017500000012534112256070607013001 0ustar billbill/* * jdmarker.c * * Copyright (C) 1991-1998, Thomas G. Lane. * Modified 2009 by Guido Vollbeding. * Modified 2013 by Bill Allombert for CVE 2013-6629 and 2013-6630 * by applying a fix by Guido Vollbeding. * * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to decode JPEG datastream markers. * Most of the complexity arises from our desire to support input * suspension: if not all of the data for a marker is available, * we must exit back to the application. On resumption, we reprocess * the marker. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" typedef enum { /* JPEG marker codes */ M_SOF0 = 0xc0, M_SOF1 = 0xc1, M_SOF2 = 0xc2, M_SOF3 = 0xc3, M_SOF5 = 0xc5, M_SOF6 = 0xc6, M_SOF7 = 0xc7, M_JPG = 0xc8, M_SOF9 = 0xc9, M_SOF10 = 0xca, M_SOF11 = 0xcb, M_SOF13 = 0xcd, M_SOF14 = 0xce, M_SOF15 = 0xcf, M_DHT = 0xc4, M_DAC = 0xcc, M_RST0 = 0xd0, M_RST1 = 0xd1, M_RST2 = 0xd2, M_RST3 = 0xd3, M_RST4 = 0xd4, M_RST5 = 0xd5, M_RST6 = 0xd6, M_RST7 = 0xd7, M_SOI = 0xd8, M_EOI = 0xd9, M_SOS = 0xda, M_DQT = 0xdb, M_DNL = 0xdc, M_DRI = 0xdd, M_DHP = 0xde, M_EXP = 0xdf, M_APP0 = 0xe0, M_APP1 = 0xe1, M_APP2 = 0xe2, M_APP3 = 0xe3, M_APP4 = 0xe4, M_APP5 = 0xe5, M_APP6 = 0xe6, M_APP7 = 0xe7, M_APP8 = 0xe8, M_APP9 = 0xe9, M_APP10 = 0xea, M_APP11 = 0xeb, M_APP12 = 0xec, M_APP13 = 0xed, M_APP14 = 0xee, M_APP15 = 0xef, M_JPG0 = 0xf0, M_JPG13 = 0xfd, M_COM = 0xfe, M_TEM = 0x01, M_ERROR = 0x100 } JPEG_MARKER; /* Private state */ typedef struct { struct jpeg_marker_reader pub; /* public fields */ /* Application-overridable marker processing methods */ jpeg_marker_parser_method process_COM; jpeg_marker_parser_method process_APPn[16]; /* Limit on marker data length to save for each marker type */ unsigned int length_limit_COM; unsigned int length_limit_APPn[16]; /* Status of COM/APPn marker saving */ jpeg_saved_marker_ptr cur_marker; /* NULL if not processing a marker */ unsigned int bytes_read; /* data bytes read so far in marker */ /* Note: cur_marker is not linked into marker_list until it's all read. */ } my_marker_reader; typedef my_marker_reader * my_marker_ptr; /* * Macros for fetching data from the data source module. * * At all times, cinfo->src->next_input_byte and ->bytes_in_buffer reflect * the current restart point; we update them only when we have reached a * suitable place to restart if a suspension occurs. */ /* Declare and initialize local copies of input pointer/count */ #define INPUT_VARS(cinfo) \ struct jpeg_source_mgr * datasrc = (cinfo)->src; \ const JOCTET * next_input_byte = datasrc->next_input_byte; \ size_t bytes_in_buffer = datasrc->bytes_in_buffer /* Unload the local copies --- do this only at a restart boundary */ #define INPUT_SYNC(cinfo) \ ( datasrc->next_input_byte = next_input_byte, \ datasrc->bytes_in_buffer = bytes_in_buffer ) /* Reload the local copies --- used only in MAKE_BYTE_AVAIL */ #define INPUT_RELOAD(cinfo) \ ( next_input_byte = datasrc->next_input_byte, \ bytes_in_buffer = datasrc->bytes_in_buffer ) /* Internal macro for INPUT_BYTE and INPUT_2BYTES: make a byte available. * Note we do *not* do INPUT_SYNC before calling fill_input_buffer, * but we must reload the local copies after a successful fill. */ #define MAKE_BYTE_AVAIL(cinfo,action) \ if (bytes_in_buffer == 0) { \ if (! (*datasrc->fill_input_buffer) (cinfo)) \ { action; } \ INPUT_RELOAD(cinfo); \ } /* Read a byte into variable V. * If must suspend, take the specified action (typically "return FALSE"). */ #define INPUT_BYTE(cinfo,V,action) \ MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \ bytes_in_buffer--; \ V = GETJOCTET(*next_input_byte++); ) /* As above, but read two bytes interpreted as an unsigned 16-bit integer. * V should be declared unsigned int or perhaps INT32. */ #define INPUT_2BYTES(cinfo,V,action) \ MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \ bytes_in_buffer--; \ V = ((unsigned int) GETJOCTET(*next_input_byte++)) << 8; \ MAKE_BYTE_AVAIL(cinfo,action); \ bytes_in_buffer--; \ V += GETJOCTET(*next_input_byte++); ) /* * Routines to process JPEG markers. * * Entry condition: JPEG marker itself has been read and its code saved * in cinfo->unread_marker; input restart point is just after the marker. * * Exit: if return TRUE, have read and processed any parameters, and have * updated the restart point to point after the parameters. * If return FALSE, was forced to suspend before reaching end of * marker parameters; restart point has not been moved. Same routine * will be called again after application supplies more input data. * * This approach to suspension assumes that all of a marker's parameters * can fit into a single input bufferload. This should hold for "normal" * markers. Some COM/APPn markers might have large parameter segments * that might not fit. If we are simply dropping such a marker, we use * skip_input_data to get past it, and thereby put the problem on the * source manager's shoulders. If we are saving the marker's contents * into memory, we use a slightly different convention: when forced to * suspend, the marker processor updates the restart point to the end of * what it's consumed (ie, the end of the buffer) before returning FALSE. * On resumption, cinfo->unread_marker still contains the marker code, * but the data source will point to the next chunk of marker data. * The marker processor must retain internal state to deal with this. * * Note that we don't bother to avoid duplicate trace messages if a * suspension occurs within marker parameters. Other side effects * require more care. */ LOCAL(boolean) get_soi (j_decompress_ptr cinfo) /* Process an SOI marker */ { int i; TRACEMS(cinfo, 1, JTRC_SOI); if (cinfo->marker->saw_SOI) ERREXIT(cinfo, JERR_SOI_DUPLICATE); /* Reset all parameters that are defined to be reset by SOI */ for (i = 0; i < NUM_ARITH_TBLS; i++) { cinfo->arith_dc_L[i] = 0; cinfo->arith_dc_U[i] = 1; cinfo->arith_ac_K[i] = 5; } cinfo->restart_interval = 0; /* Set initial assumptions for colorspace etc */ cinfo->jpeg_color_space = JCS_UNKNOWN; cinfo->CCIR601_sampling = FALSE; /* Assume non-CCIR sampling??? */ cinfo->saw_JFIF_marker = FALSE; cinfo->JFIF_major_version = 1; /* set default JFIF APP0 values */ cinfo->JFIF_minor_version = 1; cinfo->density_unit = 0; cinfo->X_density = 1; cinfo->Y_density = 1; cinfo->saw_Adobe_marker = FALSE; cinfo->Adobe_transform = 0; cinfo->marker->saw_SOI = TRUE; return TRUE; } LOCAL(boolean) get_sof (j_decompress_ptr cinfo, boolean is_baseline, boolean is_prog, boolean is_arith) /* Process a SOFn marker */ { INT32 length; int c, ci, i; jpeg_component_info * compptr; INPUT_VARS(cinfo); cinfo->is_baseline = is_baseline; cinfo->progressive_mode = is_prog; cinfo->arith_code = is_arith; INPUT_2BYTES(cinfo, length, return FALSE); INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE); INPUT_2BYTES(cinfo, cinfo->image_height, return FALSE); INPUT_2BYTES(cinfo, cinfo->image_width, return FALSE); INPUT_BYTE(cinfo, cinfo->num_components, return FALSE); length -= 8; TRACEMS4(cinfo, 1, JTRC_SOF, cinfo->unread_marker, (int) cinfo->image_width, (int) cinfo->image_height, cinfo->num_components); if (cinfo->marker->saw_SOF) ERREXIT(cinfo, JERR_SOF_DUPLICATE); /* We don't support files in which the image height is initially specified */ /* as 0 and is later redefined by DNL. As long as we have to check that, */ /* might as well have a general sanity check. */ if (cinfo->image_height <= 0 || cinfo->image_width <= 0 || cinfo->num_components <= 0) ERREXIT(cinfo, JERR_EMPTY_IMAGE); if (length != (cinfo->num_components * 3)) ERREXIT(cinfo, JERR_BAD_LENGTH); if (cinfo->comp_info == NULL) /* do only once, even if suspend */ cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->num_components * SIZEOF(jpeg_component_info)); for (ci = 0; ci < cinfo->num_components; ci++) { INPUT_BYTE(cinfo, c, return FALSE); /* Check to see whether component id has already been seen */ /* (in violation of the spec, but unfortunately seen in some */ /* files). If so, create "fake" component id equal to the */ /* max id seen so far + 1. */ for (i = 0, compptr = cinfo->comp_info; i < ci; i++, compptr++) { if (c == compptr->component_id) { compptr = cinfo->comp_info; c = compptr->component_id; compptr++; for (i = 1; i < ci; i++, compptr++) { if (compptr->component_id > c) c = compptr->component_id; } c++; break; } } compptr->component_id = c; compptr->component_index = ci; INPUT_BYTE(cinfo, c, return FALSE); compptr->h_samp_factor = (c >> 4) & 15; compptr->v_samp_factor = (c ) & 15; INPUT_BYTE(cinfo, compptr->quant_tbl_no, return FALSE); TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT, compptr->component_id, compptr->h_samp_factor, compptr->v_samp_factor, compptr->quant_tbl_no); } cinfo->marker->saw_SOF = TRUE; INPUT_SYNC(cinfo); return TRUE; } LOCAL(boolean) get_sos (j_decompress_ptr cinfo) /* Process a SOS marker */ { INT32 length; int c, ci, i, n; jpeg_component_info * compptr; INPUT_VARS(cinfo); if (! cinfo->marker->saw_SOF) ERREXIT(cinfo, JERR_SOS_NO_SOF); INPUT_2BYTES(cinfo, length, return FALSE); INPUT_BYTE(cinfo, n, return FALSE); /* Number of components */ TRACEMS1(cinfo, 1, JTRC_SOS, n); if (length != (n * 2 + 6) || n > MAX_COMPS_IN_SCAN || (n == 0 && !cinfo->progressive_mode)) /* pseudo SOS marker only allowed in progressive mode */ ERREXIT(cinfo, JERR_BAD_LENGTH); cinfo->comps_in_scan = n; /* Collect the component-spec parameters */ for (i = 0; i < n; i++) { INPUT_BYTE(cinfo, c, return FALSE); /* Detect the case where component id's are not unique, and, if so, */ /* create a fake component id using the same logic as in get_sof. */ for (ci = 0; ci < i; ci++) { if (c == cinfo->cur_comp_info[ci]->component_id) { c = cinfo->cur_comp_info[0]->component_id; for (ci = 1; ci < i; ci++) { compptr = cinfo->cur_comp_info[ci]; if (compptr->component_id > c) c = compptr->component_id; } c++; break; } } for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { if (c == compptr->component_id) goto id_found; } ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, c); id_found: cinfo->cur_comp_info[i] = compptr; INPUT_BYTE(cinfo, c, return FALSE); compptr->dc_tbl_no = (c >> 4) & 15; compptr->ac_tbl_no = (c ) & 15; TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, compptr->component_id, compptr->dc_tbl_no, compptr->ac_tbl_no); } /* Collect the additional scan parameters Ss, Se, Ah/Al. */ INPUT_BYTE(cinfo, c, return FALSE); cinfo->Ss = c; INPUT_BYTE(cinfo, c, return FALSE); cinfo->Se = c; INPUT_BYTE(cinfo, c, return FALSE); cinfo->Ah = (c >> 4) & 15; cinfo->Al = (c ) & 15; TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al); /* Prepare to scan data & restart markers */ cinfo->marker->next_restart_num = 0; /* Count another (non-pseudo) SOS marker */ if (n) cinfo->input_scan_number++; INPUT_SYNC(cinfo); return TRUE; } #ifdef D_ARITH_CODING_SUPPORTED LOCAL(boolean) get_dac (j_decompress_ptr cinfo) /* Process a DAC marker */ { INT32 length; int index, val; INPUT_VARS(cinfo); INPUT_2BYTES(cinfo, length, return FALSE); length -= 2; while (length > 0) { INPUT_BYTE(cinfo, index, return FALSE); INPUT_BYTE(cinfo, val, return FALSE); length -= 2; TRACEMS2(cinfo, 1, JTRC_DAC, index, val); if (index < 0 || index >= (2*NUM_ARITH_TBLS)) ERREXIT1(cinfo, JERR_DAC_INDEX, index); if (index >= NUM_ARITH_TBLS) { /* define AC table */ cinfo->arith_ac_K[index-NUM_ARITH_TBLS] = (UINT8) val; } else { /* define DC table */ cinfo->arith_dc_L[index] = (UINT8) (val & 0x0F); cinfo->arith_dc_U[index] = (UINT8) (val >> 4); if (cinfo->arith_dc_L[index] > cinfo->arith_dc_U[index]) ERREXIT1(cinfo, JERR_DAC_VALUE, val); } } if (length != 0) ERREXIT(cinfo, JERR_BAD_LENGTH); INPUT_SYNC(cinfo); return TRUE; } #else /* ! D_ARITH_CODING_SUPPORTED */ #define get_dac(cinfo) skip_variable(cinfo) #endif /* D_ARITH_CODING_SUPPORTED */ LOCAL(boolean) get_dht (j_decompress_ptr cinfo) /* Process a DHT marker */ { INT32 length; UINT8 bits[17]; UINT8 huffval[256]; int i, index, count; JHUFF_TBL **htblptr; INPUT_VARS(cinfo); INPUT_2BYTES(cinfo, length, return FALSE); length -= 2; while (length > 16) { INPUT_BYTE(cinfo, index, return FALSE); TRACEMS1(cinfo, 1, JTRC_DHT, index); bits[0] = 0; count = 0; for (i = 1; i <= 16; i++) { INPUT_BYTE(cinfo, bits[i], return FALSE); count += bits[i]; } length -= 1 + 16; TRACEMS8(cinfo, 2, JTRC_HUFFBITS, bits[1], bits[2], bits[3], bits[4], bits[5], bits[6], bits[7], bits[8]); TRACEMS8(cinfo, 2, JTRC_HUFFBITS, bits[9], bits[10], bits[11], bits[12], bits[13], bits[14], bits[15], bits[16]); /* Here we just do minimal validation of the counts to avoid walking * off the end of our table space. jdhuff.c will check more carefully. */ if (count > 256 || ((INT32) count) > length) ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); MEMZERO(huffval, SIZEOF(huffval)); /* pre-zero array for later copy */ for (i = 0; i < count; i++) INPUT_BYTE(cinfo, huffval[i], return FALSE); length -= count; if (index & 0x10) { /* AC table definition */ index -= 0x10; htblptr = &cinfo->ac_huff_tbl_ptrs[index]; } else { /* DC table definition */ htblptr = &cinfo->dc_huff_tbl_ptrs[index]; } if (index < 0 || index >= NUM_HUFF_TBLS) ERREXIT1(cinfo, JERR_DHT_INDEX, index); if (*htblptr == NULL) *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits)); MEMCOPY((*htblptr)->huffval, huffval, SIZEOF((*htblptr)->huffval)); } if (length != 0) ERREXIT(cinfo, JERR_BAD_LENGTH); INPUT_SYNC(cinfo); return TRUE; } LOCAL(boolean) get_dqt (j_decompress_ptr cinfo) /* Process a DQT marker */ { INT32 length, count, i; int n, prec; unsigned int tmp; JQUANT_TBL *quant_ptr; const int *natural_order; INPUT_VARS(cinfo); INPUT_2BYTES(cinfo, length, return FALSE); length -= 2; while (length > 0) { length--; INPUT_BYTE(cinfo, n, return FALSE); prec = n >> 4; n &= 0x0F; TRACEMS2(cinfo, 1, JTRC_DQT, n, prec); if (n >= NUM_QUANT_TBLS) ERREXIT1(cinfo, JERR_DQT_INDEX, n); if (cinfo->quant_tbl_ptrs[n] == NULL) cinfo->quant_tbl_ptrs[n] = jpeg_alloc_quant_table((j_common_ptr) cinfo); quant_ptr = cinfo->quant_tbl_ptrs[n]; if (prec) { if (length < DCTSIZE2 * 2) { /* Initialize full table for safety. */ for (i = 0; i < DCTSIZE2; i++) { quant_ptr->quantval[i] = 1; } count = length >> 1; } else count = DCTSIZE2; } else { if (length < DCTSIZE2) { /* Initialize full table for safety. */ for (i = 0; i < DCTSIZE2; i++) { quant_ptr->quantval[i] = 1; } count = length; } else count = DCTSIZE2; } switch (count) { case (2*2): natural_order = jpeg_natural_order2; break; case (3*3): natural_order = jpeg_natural_order3; break; case (4*4): natural_order = jpeg_natural_order4; break; case (5*5): natural_order = jpeg_natural_order5; break; case (6*6): natural_order = jpeg_natural_order6; break; case (7*7): natural_order = jpeg_natural_order7; break; default: natural_order = jpeg_natural_order; break; } for (i = 0; i < count; i++) { if (prec) INPUT_2BYTES(cinfo, tmp, return FALSE); else INPUT_BYTE(cinfo, tmp, return FALSE); /* We convert the zigzag-order table to natural array order. */ quant_ptr->quantval[natural_order[i]] = (UINT16) tmp; } if (cinfo->err->trace_level >= 2) { for (i = 0; i < DCTSIZE2; i += 8) { TRACEMS8(cinfo, 2, JTRC_QUANTVALS, quant_ptr->quantval[i], quant_ptr->quantval[i+1], quant_ptr->quantval[i+2], quant_ptr->quantval[i+3], quant_ptr->quantval[i+4], quant_ptr->quantval[i+5], quant_ptr->quantval[i+6], quant_ptr->quantval[i+7]); } } length -= count; if (prec) length -= count; } if (length != 0) ERREXIT(cinfo, JERR_BAD_LENGTH); INPUT_SYNC(cinfo); return TRUE; } LOCAL(boolean) get_dri (j_decompress_ptr cinfo) /* Process a DRI marker */ { INT32 length; unsigned int tmp; INPUT_VARS(cinfo); INPUT_2BYTES(cinfo, length, return FALSE); if (length != 4) ERREXIT(cinfo, JERR_BAD_LENGTH); INPUT_2BYTES(cinfo, tmp, return FALSE); TRACEMS1(cinfo, 1, JTRC_DRI, tmp); cinfo->restart_interval = tmp; INPUT_SYNC(cinfo); return TRUE; } /* * Routines for processing APPn and COM markers. * These are either saved in memory or discarded, per application request. * APP0 and APP14 are specially checked to see if they are * JFIF and Adobe markers, respectively. */ #define APP0_DATA_LEN 14 /* Length of interesting data in APP0 */ #define APP14_DATA_LEN 12 /* Length of interesting data in APP14 */ #define APPN_DATA_LEN 14 /* Must be the largest of the above!! */ LOCAL(void) examine_app0 (j_decompress_ptr cinfo, JOCTET FAR * data, unsigned int datalen, INT32 remaining) /* Examine first few bytes from an APP0. * Take appropriate action if it is a JFIF marker. * datalen is # of bytes at data[], remaining is length of rest of marker data. */ { INT32 totallen = (INT32) datalen + remaining; if (datalen >= APP0_DATA_LEN && GETJOCTET(data[0]) == 0x4A && GETJOCTET(data[1]) == 0x46 && GETJOCTET(data[2]) == 0x49 && GETJOCTET(data[3]) == 0x46 && GETJOCTET(data[4]) == 0) { /* Found JFIF APP0 marker: save info */ cinfo->saw_JFIF_marker = TRUE; cinfo->JFIF_major_version = GETJOCTET(data[5]); cinfo->JFIF_minor_version = GETJOCTET(data[6]); cinfo->density_unit = GETJOCTET(data[7]); cinfo->X_density = (GETJOCTET(data[8]) << 8) + GETJOCTET(data[9]); cinfo->Y_density = (GETJOCTET(data[10]) << 8) + GETJOCTET(data[11]); /* Check version. * Major version must be 1, anything else signals an incompatible change. * (We used to treat this as an error, but now it's a nonfatal warning, * because some bozo at Hijaak couldn't read the spec.) * Minor version should be 0..2, but process anyway if newer. */ if (cinfo->JFIF_major_version != 1) WARNMS2(cinfo, JWRN_JFIF_MAJOR, cinfo->JFIF_major_version, cinfo->JFIF_minor_version); /* Generate trace messages */ TRACEMS5(cinfo, 1, JTRC_JFIF, cinfo->JFIF_major_version, cinfo->JFIF_minor_version, cinfo->X_density, cinfo->Y_density, cinfo->density_unit); /* Validate thumbnail dimensions and issue appropriate messages */ if (GETJOCTET(data[12]) | GETJOCTET(data[13])) TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, GETJOCTET(data[12]), GETJOCTET(data[13])); totallen -= APP0_DATA_LEN; if (totallen != ((INT32)GETJOCTET(data[12]) * (INT32)GETJOCTET(data[13]) * (INT32) 3)) TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, (int) totallen); } else if (datalen >= 6 && GETJOCTET(data[0]) == 0x4A && GETJOCTET(data[1]) == 0x46 && GETJOCTET(data[2]) == 0x58 && GETJOCTET(data[3]) == 0x58 && GETJOCTET(data[4]) == 0) { /* Found JFIF "JFXX" extension APP0 marker */ /* The library doesn't actually do anything with these, * but we try to produce a helpful trace message. */ switch (GETJOCTET(data[5])) { case 0x10: TRACEMS1(cinfo, 1, JTRC_THUMB_JPEG, (int) totallen); break; case 0x11: TRACEMS1(cinfo, 1, JTRC_THUMB_PALETTE, (int) totallen); break; case 0x13: TRACEMS1(cinfo, 1, JTRC_THUMB_RGB, (int) totallen); break; default: TRACEMS2(cinfo, 1, JTRC_JFIF_EXTENSION, GETJOCTET(data[5]), (int) totallen); break; } } else { /* Start of APP0 does not match "JFIF" or "JFXX", or too short */ TRACEMS1(cinfo, 1, JTRC_APP0, (int) totallen); } } LOCAL(void) examine_app14 (j_decompress_ptr cinfo, JOCTET FAR * data, unsigned int datalen, INT32 remaining) /* Examine first few bytes from an APP14. * Take appropriate action if it is an Adobe marker. * datalen is # of bytes at data[], remaining is length of rest of marker data. */ { unsigned int version, flags0, flags1, transform; if (datalen >= APP14_DATA_LEN && GETJOCTET(data[0]) == 0x41 && GETJOCTET(data[1]) == 0x64 && GETJOCTET(data[2]) == 0x6F && GETJOCTET(data[3]) == 0x62 && GETJOCTET(data[4]) == 0x65) { /* Found Adobe APP14 marker */ version = (GETJOCTET(data[5]) << 8) + GETJOCTET(data[6]); flags0 = (GETJOCTET(data[7]) << 8) + GETJOCTET(data[8]); flags1 = (GETJOCTET(data[9]) << 8) + GETJOCTET(data[10]); transform = GETJOCTET(data[11]); TRACEMS4(cinfo, 1, JTRC_ADOBE, version, flags0, flags1, transform); cinfo->saw_Adobe_marker = TRUE; cinfo->Adobe_transform = (UINT8) transform; } else { /* Start of APP14 does not match "Adobe", or too short */ TRACEMS1(cinfo, 1, JTRC_APP14, (int) (datalen + remaining)); } } METHODDEF(boolean) get_interesting_appn (j_decompress_ptr cinfo) /* Process an APP0 or APP14 marker without saving it */ { INT32 length; JOCTET b[APPN_DATA_LEN]; unsigned int i, numtoread; INPUT_VARS(cinfo); INPUT_2BYTES(cinfo, length, return FALSE); length -= 2; /* get the interesting part of the marker data */ if (length >= APPN_DATA_LEN) numtoread = APPN_DATA_LEN; else if (length > 0) numtoread = (unsigned int) length; else numtoread = 0; for (i = 0; i < numtoread; i++) INPUT_BYTE(cinfo, b[i], return FALSE); length -= numtoread; /* process it */ switch (cinfo->unread_marker) { case M_APP0: examine_app0(cinfo, (JOCTET FAR *) b, numtoread, length); break; case M_APP14: examine_app14(cinfo, (JOCTET FAR *) b, numtoread, length); break; default: /* can't get here unless jpeg_save_markers chooses wrong processor */ ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker); break; } /* skip any remaining data -- could be lots */ INPUT_SYNC(cinfo); if (length > 0) (*cinfo->src->skip_input_data) (cinfo, (long) length); return TRUE; } #ifdef SAVE_MARKERS_SUPPORTED METHODDEF(boolean) save_marker (j_decompress_ptr cinfo) /* Save an APPn or COM marker into the marker list */ { my_marker_ptr marker = (my_marker_ptr) cinfo->marker; jpeg_saved_marker_ptr cur_marker = marker->cur_marker; unsigned int bytes_read, data_length; JOCTET FAR * data; INT32 length = 0; INPUT_VARS(cinfo); if (cur_marker == NULL) { /* begin reading a marker */ INPUT_2BYTES(cinfo, length, return FALSE); length -= 2; if (length >= 0) { /* watch out for bogus length word */ /* figure out how much we want to save */ unsigned int limit; if (cinfo->unread_marker == (int) M_COM) limit = marker->length_limit_COM; else limit = marker->length_limit_APPn[cinfo->unread_marker - (int) M_APP0]; if ((unsigned int) length < limit) limit = (unsigned int) length; /* allocate and initialize the marker item */ cur_marker = (jpeg_saved_marker_ptr) (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(struct jpeg_marker_struct) + limit); cur_marker->next = NULL; cur_marker->marker = (UINT8) cinfo->unread_marker; cur_marker->original_length = (unsigned int) length; cur_marker->data_length = limit; /* data area is just beyond the jpeg_marker_struct */ data = cur_marker->data = (JOCTET FAR *) (cur_marker + 1); marker->cur_marker = cur_marker; marker->bytes_read = 0; bytes_read = 0; data_length = limit; } else { /* deal with bogus length word */ bytes_read = data_length = 0; data = NULL; } } else { /* resume reading a marker */ bytes_read = marker->bytes_read; data_length = cur_marker->data_length; data = cur_marker->data + bytes_read; } while (bytes_read < data_length) { INPUT_SYNC(cinfo); /* move the restart point to here */ marker->bytes_read = bytes_read; /* If there's not at least one byte in buffer, suspend */ MAKE_BYTE_AVAIL(cinfo, return FALSE); /* Copy bytes with reasonable rapidity */ while (bytes_read < data_length && bytes_in_buffer > 0) { *data++ = *next_input_byte++; bytes_in_buffer--; bytes_read++; } } /* Done reading what we want to read */ if (cur_marker != NULL) { /* will be NULL if bogus length word */ /* Add new marker to end of list */ if (cinfo->marker_list == NULL) { cinfo->marker_list = cur_marker; } else { jpeg_saved_marker_ptr prev = cinfo->marker_list; while (prev->next != NULL) prev = prev->next; prev->next = cur_marker; } /* Reset pointer & calc remaining data length */ data = cur_marker->data; length = cur_marker->original_length - data_length; } /* Reset to initial state for next marker */ marker->cur_marker = NULL; /* Process the marker if interesting; else just make a generic trace msg */ switch (cinfo->unread_marker) { case M_APP0: examine_app0(cinfo, data, data_length, length); break; case M_APP14: examine_app14(cinfo, data, data_length, length); break; default: TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo->unread_marker, (int) (data_length + length)); break; } /* skip any remaining data -- could be lots */ INPUT_SYNC(cinfo); /* do before skip_input_data */ if (length > 0) (*cinfo->src->skip_input_data) (cinfo, (long) length); return TRUE; } #endif /* SAVE_MARKERS_SUPPORTED */ METHODDEF(boolean) skip_variable (j_decompress_ptr cinfo) /* Skip over an unknown or uninteresting variable-length marker */ { INT32 length; INPUT_VARS(cinfo); INPUT_2BYTES(cinfo, length, return FALSE); length -= 2; TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo->unread_marker, (int) length); INPUT_SYNC(cinfo); /* do before skip_input_data */ if (length > 0) (*cinfo->src->skip_input_data) (cinfo, (long) length); return TRUE; } /* * Find the next JPEG marker, save it in cinfo->unread_marker. * Returns FALSE if had to suspend before reaching a marker; * in that case cinfo->unread_marker is unchanged. * * Note that the result might not be a valid marker code, * but it will never be 0 or FF. */ LOCAL(boolean) next_marker (j_decompress_ptr cinfo) { int c; INPUT_VARS(cinfo); for (;;) { INPUT_BYTE(cinfo, c, return FALSE); /* Skip any non-FF bytes. * This may look a bit inefficient, but it will not occur in a valid file. * We sync after each discarded byte so that a suspending data source * can discard the byte from its buffer. */ while (c != 0xFF) { cinfo->marker->discarded_bytes++; INPUT_SYNC(cinfo); INPUT_BYTE(cinfo, c, return FALSE); } /* This loop swallows any duplicate FF bytes. Extra FFs are legal as * pad bytes, so don't count them in discarded_bytes. We assume there * will not be so many consecutive FF bytes as to overflow a suspending * data source's input buffer. */ do { INPUT_BYTE(cinfo, c, return FALSE); } while (c == 0xFF); if (c != 0) break; /* found a valid marker, exit loop */ /* Reach here if we found a stuffed-zero data sequence (FF/00). * Discard it and loop back to try again. */ cinfo->marker->discarded_bytes += 2; INPUT_SYNC(cinfo); } if (cinfo->marker->discarded_bytes != 0) { WARNMS2(cinfo, JWRN_EXTRANEOUS_DATA, cinfo->marker->discarded_bytes, c); cinfo->marker->discarded_bytes = 0; } cinfo->unread_marker = c; INPUT_SYNC(cinfo); return TRUE; } LOCAL(boolean) first_marker (j_decompress_ptr cinfo) /* Like next_marker, but used to obtain the initial SOI marker. */ /* For this marker, we do not allow preceding garbage or fill; otherwise, * we might well scan an entire input file before realizing it ain't JPEG. * If an application wants to process non-JFIF files, it must seek to the * SOI before calling the JPEG library. */ { int c, c2; INPUT_VARS(cinfo); INPUT_BYTE(cinfo, c, return FALSE); INPUT_BYTE(cinfo, c2, return FALSE); if (c != 0xFF || c2 != (int) M_SOI) ERREXIT2(cinfo, JERR_NO_SOI, c, c2); cinfo->unread_marker = c2; INPUT_SYNC(cinfo); return TRUE; } /* * Read markers until SOS or EOI. * * Returns same codes as are defined for jpeg_consume_input: * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. * * Note: This function may return a pseudo SOS marker (with zero * component number) for treat by input controller's consume_input. * consume_input itself should filter out (skip) the pseudo marker * after processing for the caller. */ METHODDEF(int) read_markers (j_decompress_ptr cinfo) { /* Outer loop repeats once for each marker. */ for (;;) { /* Collect the marker proper, unless we already did. */ /* NB: first_marker() enforces the requirement that SOI appear first. */ if (cinfo->unread_marker == 0) { if (! cinfo->marker->saw_SOI) { if (! first_marker(cinfo)) return JPEG_SUSPENDED; } else { if (! next_marker(cinfo)) return JPEG_SUSPENDED; } } /* At this point cinfo->unread_marker contains the marker code and the * input point is just past the marker proper, but before any parameters. * A suspension will cause us to return with this state still true. */ switch (cinfo->unread_marker) { case M_SOI: if (! get_soi(cinfo)) return JPEG_SUSPENDED; break; case M_SOF0: /* Baseline */ if (! get_sof(cinfo, TRUE, FALSE, FALSE)) return JPEG_SUSPENDED; break; case M_SOF1: /* Extended sequential, Huffman */ if (! get_sof(cinfo, FALSE, FALSE, FALSE)) return JPEG_SUSPENDED; break; case M_SOF2: /* Progressive, Huffman */ if (! get_sof(cinfo, FALSE, TRUE, FALSE)) return JPEG_SUSPENDED; break; case M_SOF9: /* Extended sequential, arithmetic */ if (! get_sof(cinfo, FALSE, FALSE, TRUE)) return JPEG_SUSPENDED; break; case M_SOF10: /* Progressive, arithmetic */ if (! get_sof(cinfo, FALSE, TRUE, TRUE)) return JPEG_SUSPENDED; break; /* Currently unsupported SOFn types */ case M_SOF3: /* Lossless, Huffman */ case M_SOF5: /* Differential sequential, Huffman */ case M_SOF6: /* Differential progressive, Huffman */ case M_SOF7: /* Differential lossless, Huffman */ case M_JPG: /* Reserved for JPEG extensions */ case M_SOF11: /* Lossless, arithmetic */ case M_SOF13: /* Differential sequential, arithmetic */ case M_SOF14: /* Differential progressive, arithmetic */ case M_SOF15: /* Differential lossless, arithmetic */ ERREXIT1(cinfo, JERR_SOF_UNSUPPORTED, cinfo->unread_marker); break; case M_SOS: if (! get_sos(cinfo)) return JPEG_SUSPENDED; cinfo->unread_marker = 0; /* processed the marker */ return JPEG_REACHED_SOS; case M_EOI: TRACEMS(cinfo, 1, JTRC_EOI); cinfo->unread_marker = 0; /* processed the marker */ return JPEG_REACHED_EOI; case M_DAC: if (! get_dac(cinfo)) return JPEG_SUSPENDED; break; case M_DHT: if (! get_dht(cinfo)) return JPEG_SUSPENDED; break; case M_DQT: if (! get_dqt(cinfo)) return JPEG_SUSPENDED; break; case M_DRI: if (! get_dri(cinfo)) return JPEG_SUSPENDED; break; case M_APP0: case M_APP1: case M_APP2: case M_APP3: case M_APP4: case M_APP5: case M_APP6: case M_APP7: case M_APP8: case M_APP9: case M_APP10: case M_APP11: case M_APP12: case M_APP13: case M_APP14: case M_APP15: if (! (*((my_marker_ptr) cinfo->marker)->process_APPn[ cinfo->unread_marker - (int) M_APP0]) (cinfo)) return JPEG_SUSPENDED; break; case M_COM: if (! (*((my_marker_ptr) cinfo->marker)->process_COM) (cinfo)) return JPEG_SUSPENDED; break; case M_RST0: /* these are all parameterless */ case M_RST1: case M_RST2: case M_RST3: case M_RST4: case M_RST5: case M_RST6: case M_RST7: case M_TEM: TRACEMS1(cinfo, 1, JTRC_PARMLESS_MARKER, cinfo->unread_marker); break; case M_DNL: /* Ignore DNL ... perhaps the wrong thing */ if (! skip_variable(cinfo)) return JPEG_SUSPENDED; break; default: /* must be DHP, EXP, JPGn, or RESn */ /* For now, we treat the reserved markers as fatal errors since they are * likely to be used to signal incompatible JPEG Part 3 extensions. * Once the JPEG 3 version-number marker is well defined, this code * ought to change! */ ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker); break; } /* Successfully processed marker, so reset state variable */ cinfo->unread_marker = 0; } /* end loop */ } /* * Read a restart marker, which is expected to appear next in the datastream; * if the marker is not there, take appropriate recovery action. * Returns FALSE if suspension is required. * * This is called by the entropy decoder after it has read an appropriate * number of MCUs. cinfo->unread_marker may be nonzero if the entropy decoder * has already read a marker from the data source. Under normal conditions * cinfo->unread_marker will be reset to 0 before returning; if not reset, * it holds a marker which the decoder will be unable to read past. */ METHODDEF(boolean) read_restart_marker (j_decompress_ptr cinfo) { /* Obtain a marker unless we already did. */ /* Note that next_marker will complain if it skips any data. */ if (cinfo->unread_marker == 0) { if (! next_marker(cinfo)) return FALSE; } if (cinfo->unread_marker == ((int) M_RST0 + cinfo->marker->next_restart_num)) { /* Normal case --- swallow the marker and let entropy decoder continue */ TRACEMS1(cinfo, 3, JTRC_RST, cinfo->marker->next_restart_num); cinfo->unread_marker = 0; } else { /* Uh-oh, the restart markers have been messed up. */ /* Let the data source manager determine how to resync. */ if (! (*cinfo->src->resync_to_restart) (cinfo, cinfo->marker->next_restart_num)) return FALSE; } /* Update next-restart state */ cinfo->marker->next_restart_num = (cinfo->marker->next_restart_num + 1) & 7; return TRUE; } /* * This is the default resync_to_restart method for data source managers * to use if they don't have any better approach. Some data source managers * may be able to back up, or may have additional knowledge about the data * which permits a more intelligent recovery strategy; such managers would * presumably supply their own resync method. * * read_restart_marker calls resync_to_restart if it finds a marker other than * the restart marker it was expecting. (This code is *not* used unless * a nonzero restart interval has been declared.) cinfo->unread_marker is * the marker code actually found (might be anything, except 0 or FF). * The desired restart marker number (0..7) is passed as a parameter. * This routine is supposed to apply whatever error recovery strategy seems * appropriate in order to position the input stream to the next data segment. * Note that cinfo->unread_marker is treated as a marker appearing before * the current data-source input point; usually it should be reset to zero * before returning. * Returns FALSE if suspension is required. * * This implementation is substantially constrained by wanting to treat the * input as a data stream; this means we can't back up. Therefore, we have * only the following actions to work with: * 1. Simply discard the marker and let the entropy decoder resume at next * byte of file. * 2. Read forward until we find another marker, discarding intervening * data. (In theory we could look ahead within the current bufferload, * without having to discard data if we don't find the desired marker. * This idea is not implemented here, in part because it makes behavior * dependent on buffer size and chance buffer-boundary positions.) * 3. Leave the marker unread (by failing to zero cinfo->unread_marker). * This will cause the entropy decoder to process an empty data segment, * inserting dummy zeroes, and then we will reprocess the marker. * * #2 is appropriate if we think the desired marker lies ahead, while #3 is * appropriate if the found marker is a future restart marker (indicating * that we have missed the desired restart marker, probably because it got * corrupted). * We apply #2 or #3 if the found marker is a restart marker no more than * two counts behind or ahead of the expected one. We also apply #2 if the * found marker is not a legal JPEG marker code (it's certainly bogus data). * If the found marker is a restart marker more than 2 counts away, we do #1 * (too much risk that the marker is erroneous; with luck we will be able to * resync at some future point). * For any valid non-restart JPEG marker, we apply #3. This keeps us from * overrunning the end of a scan. An implementation limited to single-scan * files might find it better to apply #2 for markers other than EOI, since * any other marker would have to be bogus data in that case. */ GLOBAL(boolean) jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired) { int marker = cinfo->unread_marker; int action = 1; /* Always put up a warning. */ WARNMS2(cinfo, JWRN_MUST_RESYNC, marker, desired); /* Outer loop handles repeated decision after scanning forward. */ for (;;) { if (marker < (int) M_SOF0) action = 2; /* invalid marker */ else if (marker < (int) M_RST0 || marker > (int) M_RST7) action = 3; /* valid non-restart marker */ else { if (marker == ((int) M_RST0 + ((desired+1) & 7)) || marker == ((int) M_RST0 + ((desired+2) & 7))) action = 3; /* one of the next two expected restarts */ else if (marker == ((int) M_RST0 + ((desired-1) & 7)) || marker == ((int) M_RST0 + ((desired-2) & 7))) action = 2; /* a prior restart, so advance */ else action = 1; /* desired restart or too far away */ } TRACEMS2(cinfo, 4, JTRC_RECOVERY_ACTION, marker, action); switch (action) { case 1: /* Discard marker and let entropy decoder resume processing. */ cinfo->unread_marker = 0; return TRUE; case 2: /* Scan to the next marker, and repeat the decision loop. */ if (! next_marker(cinfo)) return FALSE; marker = cinfo->unread_marker; break; case 3: /* Return without advancing past this marker. */ /* Entropy decoder will be forced to process an empty segment. */ return TRUE; } } /* end loop */ } /* * Reset marker processing state to begin a fresh datastream. */ METHODDEF(void) reset_marker_reader (j_decompress_ptr cinfo) { my_marker_ptr marker = (my_marker_ptr) cinfo->marker; cinfo->comp_info = NULL; /* until allocated by get_sof */ cinfo->input_scan_number = 0; /* no SOS seen yet */ cinfo->unread_marker = 0; /* no pending marker */ marker->pub.saw_SOI = FALSE; /* set internal state too */ marker->pub.saw_SOF = FALSE; marker->pub.discarded_bytes = 0; marker->cur_marker = NULL; } /* * Initialize the marker reader module. * This is called only once, when the decompression object is created. */ GLOBAL(void) jinit_marker_reader (j_decompress_ptr cinfo) { my_marker_ptr marker; int i; /* Create subobject in permanent pool */ marker = (my_marker_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, SIZEOF(my_marker_reader)); cinfo->marker = (struct jpeg_marker_reader *) marker; /* Initialize public method pointers */ marker->pub.reset_marker_reader = reset_marker_reader; marker->pub.read_markers = read_markers; marker->pub.read_restart_marker = read_restart_marker; /* Initialize COM/APPn processing. * By default, we examine and then discard APP0 and APP14, * but simply discard COM and all other APPn. */ marker->process_COM = skip_variable; marker->length_limit_COM = 0; for (i = 0; i < 16; i++) { marker->process_APPn[i] = skip_variable; marker->length_limit_APPn[i] = 0; } marker->process_APPn[0] = get_interesting_appn; marker->process_APPn[14] = get_interesting_appn; /* Reset marker processing state */ reset_marker_reader(cinfo); } /* * Control saving of COM and APPn markers into marker_list. */ #ifdef SAVE_MARKERS_SUPPORTED GLOBAL(void) jpeg_save_markers (j_decompress_ptr cinfo, int marker_code, unsigned int length_limit) { my_marker_ptr marker = (my_marker_ptr) cinfo->marker; long maxlength; jpeg_marker_parser_method processor; /* Length limit mustn't be larger than what we can allocate * (should only be a concern in a 16-bit environment). */ maxlength = cinfo->mem->max_alloc_chunk - SIZEOF(struct jpeg_marker_struct); if (((long) length_limit) > maxlength) length_limit = (unsigned int) maxlength; /* Choose processor routine to use. * APP0/APP14 have special requirements. */ if (length_limit) { processor = save_marker; /* If saving APP0/APP14, save at least enough for our internal use. */ if (marker_code == (int) M_APP0 && length_limit < APP0_DATA_LEN) length_limit = APP0_DATA_LEN; else if (marker_code == (int) M_APP14 && length_limit < APP14_DATA_LEN) length_limit = APP14_DATA_LEN; } else { processor = skip_variable; /* If discarding APP0/APP14, use our regular on-the-fly processor. */ if (marker_code == (int) M_APP0 || marker_code == (int) M_APP14) processor = get_interesting_appn; } if (marker_code == (int) M_COM) { marker->process_COM = processor; marker->length_limit_COM = length_limit; } else if (marker_code >= (int) M_APP0 && marker_code <= (int) M_APP15) { marker->process_APPn[marker_code - (int) M_APP0] = processor; marker->length_limit_APPn[marker_code - (int) M_APP0] = length_limit; } else ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code); } #endif /* SAVE_MARKERS_SUPPORTED */ /* * Install a special processing method for COM or APPn markers. */ GLOBAL(void) jpeg_set_marker_processor (j_decompress_ptr cinfo, int marker_code, jpeg_marker_parser_method routine) { my_marker_ptr marker = (my_marker_ptr) cinfo->marker; if (marker_code == (int) M_COM) marker->process_COM = routine; else if (marker_code >= (int) M_APP0 && marker_code <= (int) M_APP15) marker->process_APPn[marker_code - (int) M_APP0] = routine; else ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code); } jpeg-8d1/testorig.jpg0000644000175000017500000001321206006473231013365 0ustar billbillJFIFC    $.' 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We must read it out in top-to-bottom row order, and if * it is an 8-bit image, we must expand colormapped pixels to 24bit format. */ METHODDEF(JDIMENSION) get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 8-bit colormap indexes */ { bmp_source_ptr source = (bmp_source_ptr) sinfo; register JSAMPARRAY colormap = source->colormap; JSAMPARRAY image_ptr; register int t; register JSAMPROW inptr, outptr; register JDIMENSION col; /* Fetch next row from virtual array */ source->source_row--; image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, source->whole_image, source->source_row, (JDIMENSION) 1, FALSE); /* Expand the colormap indexes to real data */ inptr = image_ptr[0]; outptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { t = GETJSAMPLE(*inptr++); *outptr++ = colormap[0][t]; /* can omit GETJSAMPLE() safely */ *outptr++ = colormap[1][t]; *outptr++ = colormap[2][t]; } return 1; } METHODDEF(JDIMENSION) get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 24-bit pixels */ { bmp_source_ptr source = (bmp_source_ptr) sinfo; JSAMPARRAY image_ptr; register JSAMPROW inptr, outptr; register JDIMENSION col; /* Fetch next row from virtual array */ source->source_row--; image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, source->whole_image, source->source_row, (JDIMENSION) 1, FALSE); /* Transfer data. Note source values are in BGR order * (even though Microsoft's own documents say the opposite). */ inptr = image_ptr[0]; outptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ outptr[1] = *inptr++; outptr[0] = *inptr++; outptr += 3; } return 1; } METHODDEF(JDIMENSION) get_32bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading 32-bit pixels */ { bmp_source_ptr source = (bmp_source_ptr) sinfo; JSAMPARRAY image_ptr; register JSAMPROW inptr, outptr; register JDIMENSION col; /* Fetch next row from virtual array */ source->source_row--; image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, source->whole_image, source->source_row, (JDIMENSION) 1, FALSE); /* Transfer data. Note source values are in BGR order * (even though Microsoft's own documents say the opposite). */ inptr = image_ptr[0]; outptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ outptr[1] = *inptr++; outptr[0] = *inptr++; inptr++; /* skip the 4th byte (Alpha channel) */ outptr += 3; } return 1; } /* * This method loads the image into whole_image during the first call on * get_pixel_rows. The get_pixel_rows pointer is then adjusted to call * get_8bit_row, get_24bit_row, or get_32bit_row on subsequent calls. */ METHODDEF(JDIMENSION) preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { bmp_source_ptr source = (bmp_source_ptr) sinfo; register FILE *infile = source->pub.input_file; register int c; register JSAMPROW out_ptr; JSAMPARRAY image_ptr; JDIMENSION row, col; cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; /* Read the data into a virtual array in input-file row order. */ for (row = 0; row < cinfo->image_height; row++) { if (progress != NULL) { progress->pub.pass_counter = (long) row; progress->pub.pass_limit = (long) cinfo->image_height; (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); } image_ptr = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, source->whole_image, row, (JDIMENSION) 1, TRUE); out_ptr = image_ptr[0]; for (col = source->row_width; col > 0; col--) { /* inline copy of read_byte() for speed */ if ((c = getc(infile)) == EOF) ERREXIT(cinfo, JERR_INPUT_EOF); *out_ptr++ = (JSAMPLE) c; } } if (progress != NULL) progress->completed_extra_passes++; /* Set up to read from the virtual array in top-to-bottom order */ switch (source->bits_per_pixel) { case 8: source->pub.get_pixel_rows = get_8bit_row; break; case 24: source->pub.get_pixel_rows = get_24bit_row; break; case 32: source->pub.get_pixel_rows = get_32bit_row; break; default: ERREXIT(cinfo, JERR_BMP_BADDEPTH); } source->source_row = cinfo->image_height; /* And read the first row */ return (*source->pub.get_pixel_rows) (cinfo, sinfo); } /* * Read the file header; return image size and component count. */ METHODDEF(void) start_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { bmp_source_ptr source = (bmp_source_ptr) sinfo; U_CHAR bmpfileheader[14]; U_CHAR bmpinfoheader[64]; #define GET_2B(array,offset) ((unsigned int) UCH(array[offset]) + \ (((unsigned int) UCH(array[offset+1])) << 8)) #define GET_4B(array,offset) ((INT32) UCH(array[offset]) + \ (((INT32) UCH(array[offset+1])) << 8) + \ (((INT32) UCH(array[offset+2])) << 16) + \ (((INT32) UCH(array[offset+3])) << 24)) INT32 bfOffBits; INT32 headerSize; INT32 biWidth; INT32 biHeight; unsigned int biPlanes; INT32 biCompression; INT32 biXPelsPerMeter,biYPelsPerMeter; INT32 biClrUsed = 0; int mapentrysize = 0; /* 0 indicates no colormap */ INT32 bPad; JDIMENSION row_width; /* Read and verify the bitmap file header */ if (! ReadOK(source->pub.input_file, bmpfileheader, 14)) ERREXIT(cinfo, JERR_INPUT_EOF); if (GET_2B(bmpfileheader,0) != 0x4D42) /* 'BM' */ ERREXIT(cinfo, JERR_BMP_NOT); bfOffBits = (INT32) GET_4B(bmpfileheader,10); /* We ignore the remaining fileheader fields */ /* The infoheader might be 12 bytes (OS/2 1.x), 40 bytes (Windows), * or 64 bytes (OS/2 2.x). Check the first 4 bytes to find out which. */ if (! ReadOK(source->pub.input_file, bmpinfoheader, 4)) ERREXIT(cinfo, JERR_INPUT_EOF); headerSize = (INT32) GET_4B(bmpinfoheader,0); if (headerSize < 12 || headerSize > 64) ERREXIT(cinfo, JERR_BMP_BADHEADER); if (! ReadOK(source->pub.input_file, bmpinfoheader+4, headerSize-4)) ERREXIT(cinfo, JERR_INPUT_EOF); switch ((int) headerSize) { case 12: /* Decode OS/2 1.x header (Microsoft calls this a BITMAPCOREHEADER) */ biWidth = (INT32) GET_2B(bmpinfoheader,4); biHeight = (INT32) GET_2B(bmpinfoheader,6); biPlanes = GET_2B(bmpinfoheader,8); source->bits_per_pixel = (int) GET_2B(bmpinfoheader,10); switch (source->bits_per_pixel) { case 8: /* colormapped image */ mapentrysize = 3; /* OS/2 uses RGBTRIPLE colormap */ TRACEMS2(cinfo, 1, JTRC_BMP_OS2_MAPPED, (int) biWidth, (int) biHeight); break; case 24: /* RGB image */ TRACEMS2(cinfo, 1, JTRC_BMP_OS2, (int) biWidth, (int) biHeight); break; default: ERREXIT(cinfo, JERR_BMP_BADDEPTH); break; } break; case 40: case 64: /* Decode Windows 3.x header (Microsoft calls this a BITMAPINFOHEADER) */ /* or OS/2 2.x header, which has additional fields that we ignore */ biWidth = GET_4B(bmpinfoheader,4); biHeight = GET_4B(bmpinfoheader,8); biPlanes = GET_2B(bmpinfoheader,12); source->bits_per_pixel = (int) GET_2B(bmpinfoheader,14); biCompression = GET_4B(bmpinfoheader,16); biXPelsPerMeter = GET_4B(bmpinfoheader,24); biYPelsPerMeter = GET_4B(bmpinfoheader,28); biClrUsed = GET_4B(bmpinfoheader,32); /* biSizeImage, biClrImportant fields are ignored */ switch (source->bits_per_pixel) { case 8: /* colormapped image */ mapentrysize = 4; /* Windows uses RGBQUAD colormap */ TRACEMS2(cinfo, 1, JTRC_BMP_MAPPED, (int) biWidth, (int) biHeight); break; case 24: /* RGB image */ TRACEMS2(cinfo, 1, JTRC_BMP, (int) biWidth, (int) biHeight); break; case 32: /* RGB image + Alpha channel */ TRACEMS2(cinfo, 1, JTRC_BMP, (int) biWidth, (int) biHeight); break; default: ERREXIT(cinfo, JERR_BMP_BADDEPTH); break; } if (biCompression != 0) ERREXIT(cinfo, JERR_BMP_COMPRESSED); if (biXPelsPerMeter > 0 && biYPelsPerMeter > 0) { /* Set JFIF density parameters from the BMP data */ cinfo->X_density = (UINT16) (biXPelsPerMeter/100); /* 100 cm per meter */ cinfo->Y_density = (UINT16) (biYPelsPerMeter/100); cinfo->density_unit = 2; /* dots/cm */ } break; default: ERREXIT(cinfo, JERR_BMP_BADHEADER); return; } if (biWidth <= 0 || biHeight <= 0) ERREXIT(cinfo, JERR_BMP_EMPTY); if (biPlanes != 1) ERREXIT(cinfo, JERR_BMP_BADPLANES); /* Compute distance to bitmap data --- will adjust for colormap below */ bPad = bfOffBits - (headerSize + 14); /* Read the colormap, if any */ if (mapentrysize > 0) { if (biClrUsed <= 0) biClrUsed = 256; /* assume it's 256 */ else if (biClrUsed > 256) ERREXIT(cinfo, JERR_BMP_BADCMAP); /* Allocate space to store the colormap */ source->colormap = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) biClrUsed, (JDIMENSION) 3); /* and read it from the file */ read_colormap(source, (int) biClrUsed, mapentrysize); /* account for size of colormap */ bPad -= biClrUsed * mapentrysize; } /* Skip any remaining pad bytes */ if (bPad < 0) /* incorrect bfOffBits value? */ ERREXIT(cinfo, JERR_BMP_BADHEADER); while (--bPad >= 0) { (void) read_byte(source); } /* Compute row width in file, including padding to 4-byte boundary */ if (source->bits_per_pixel == 24) row_width = (JDIMENSION) (biWidth * 3); else if (source->bits_per_pixel == 32) row_width = (JDIMENSION) (biWidth * 4); else row_width = (JDIMENSION) biWidth; while ((row_width & 3) != 0) row_width++; source->row_width = row_width; /* Allocate space for inversion array, prepare for preload pass */ source->whole_image = (*cinfo->mem->request_virt_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, row_width, (JDIMENSION) biHeight, (JDIMENSION) 1); source->pub.get_pixel_rows = preload_image; if (cinfo->progress != NULL) { cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; progress->total_extra_passes++; /* count file input as separate pass */ } /* Allocate one-row buffer for returned data */ source->pub.buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) (biWidth * 3), (JDIMENSION) 1); source->pub.buffer_height = 1; cinfo->in_color_space = JCS_RGB; cinfo->input_components = 3; cinfo->data_precision = 8; cinfo->image_width = (JDIMENSION) biWidth; cinfo->image_height = (JDIMENSION) biHeight; } /* * Finish up at the end of the file. */ METHODDEF(void) finish_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { /* no work */ } /* * The module selection routine for BMP format input. */ GLOBAL(cjpeg_source_ptr) jinit_read_bmp (j_compress_ptr cinfo) { bmp_source_ptr source; /* Create module interface object */ source = (bmp_source_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(bmp_source_struct)); source->cinfo = cinfo; /* make back link for subroutines */ /* Fill in method ptrs, except get_pixel_rows which start_input sets */ source->pub.start_input = start_input_bmp; source->pub.finish_input = finish_input_bmp; return (cjpeg_source_ptr) source; } #endif /* BMP_SUPPORTED */ jpeg-8d1/wrppm.c0000644000175000017500000002026111166471024012337 0ustar billbill/* * wrppm.c * * Copyright (C) 1991-1996, Thomas G. Lane. * Modified 2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to write output images in PPM/PGM format. * The extended 2-byte-per-sample raw PPM/PGM formats are supported. * The PBMPLUS library is NOT required to compile this software * (but it is highly useful as a set of PPM image manipulation programs). * * These routines may need modification for non-Unix environments or * specialized applications. As they stand, they assume output to * an ordinary stdio stream. */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef PPM_SUPPORTED /* * For 12-bit JPEG data, we either downscale the values to 8 bits * (to write standard byte-per-sample PPM/PGM files), or output * nonstandard word-per-sample PPM/PGM files. Downscaling is done * if PPM_NORAWWORD is defined (this can be done in the Makefile * or in jconfig.h). * (When the core library supports data precision reduction, a cleaner * implementation will be to ask for that instead.) */ #if BITS_IN_JSAMPLE == 8 #define PUTPPMSAMPLE(ptr,v) *ptr++ = (char) (v) #define BYTESPERSAMPLE 1 #define PPM_MAXVAL 255 #else #ifdef PPM_NORAWWORD #define PUTPPMSAMPLE(ptr,v) *ptr++ = (char) ((v) >> (BITS_IN_JSAMPLE-8)) #define BYTESPERSAMPLE 1 #define PPM_MAXVAL 255 #else /* The word-per-sample format always puts the MSB first. */ #define PUTPPMSAMPLE(ptr,v) \ { register int val_ = v; \ *ptr++ = (char) ((val_ >> 8) & 0xFF); \ *ptr++ = (char) (val_ & 0xFF); \ } #define BYTESPERSAMPLE 2 #define PPM_MAXVAL ((1<pub.output_file, dest->iobuffer, dest->buffer_width); } /* * This code is used when we have to copy the data and apply a pixel * format translation. Typically this only happens in 12-bit mode. */ METHODDEF(void) copy_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) { ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; register char * bufferptr; register JSAMPROW ptr; register JDIMENSION col; ptr = dest->pub.buffer[0]; bufferptr = dest->iobuffer; for (col = dest->samples_per_row; col > 0; col--) { PUTPPMSAMPLE(bufferptr, GETJSAMPLE(*ptr++)); } (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); } /* * Write some pixel data when color quantization is in effect. * We have to demap the color index values to straight data. */ METHODDEF(void) put_demapped_rgb (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) { ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; register char * bufferptr; register int pixval; register JSAMPROW ptr; register JSAMPROW color_map0 = cinfo->colormap[0]; register JSAMPROW color_map1 = cinfo->colormap[1]; register JSAMPROW color_map2 = cinfo->colormap[2]; register JDIMENSION col; ptr = dest->pub.buffer[0]; bufferptr = dest->iobuffer; for (col = cinfo->output_width; col > 0; col--) { pixval = GETJSAMPLE(*ptr++); PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map0[pixval])); PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map1[pixval])); PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map2[pixval])); } (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); } METHODDEF(void) put_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) { ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; register char * bufferptr; register JSAMPROW ptr; register JSAMPROW color_map = cinfo->colormap[0]; register JDIMENSION col; ptr = dest->pub.buffer[0]; bufferptr = dest->iobuffer; for (col = cinfo->output_width; col > 0; col--) { PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map[GETJSAMPLE(*ptr++)])); } (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); } /* * Startup: write the file header. */ METHODDEF(void) start_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; /* Emit file header */ switch (cinfo->out_color_space) { case JCS_GRAYSCALE: /* emit header for raw PGM format */ fprintf(dest->pub.output_file, "P5\n%ld %ld\n%d\n", (long) cinfo->output_width, (long) cinfo->output_height, PPM_MAXVAL); break; case JCS_RGB: /* emit header for raw PPM format */ fprintf(dest->pub.output_file, "P6\n%ld %ld\n%d\n", (long) cinfo->output_width, (long) cinfo->output_height, PPM_MAXVAL); break; default: ERREXIT(cinfo, JERR_PPM_COLORSPACE); } } /* * Finish up at the end of the file. */ METHODDEF(void) finish_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { /* Make sure we wrote the output file OK */ fflush(dinfo->output_file); if (ferror(dinfo->output_file)) ERREXIT(cinfo, JERR_FILE_WRITE); } /* * The module selection routine for PPM format output. */ GLOBAL(djpeg_dest_ptr) jinit_write_ppm (j_decompress_ptr cinfo) { ppm_dest_ptr dest; /* Create module interface object, fill in method pointers */ dest = (ppm_dest_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(ppm_dest_struct)); dest->pub.start_output = start_output_ppm; dest->pub.finish_output = finish_output_ppm; /* Calculate output image dimensions so we can allocate space */ jpeg_calc_output_dimensions(cinfo); /* Create physical I/O buffer. Note we make this near on a PC. */ dest->samples_per_row = cinfo->output_width * cinfo->out_color_components; dest->buffer_width = dest->samples_per_row * (BYTESPERSAMPLE * SIZEOF(char)); dest->iobuffer = (char *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width); if (cinfo->quantize_colors || BITS_IN_JSAMPLE != 8 || SIZEOF(JSAMPLE) != SIZEOF(char)) { /* When quantizing, we need an output buffer for colormap indexes * that's separate from the physical I/O buffer. We also need a * separate buffer if pixel format translation must take place. */ dest->pub.buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->output_width * cinfo->output_components, (JDIMENSION) 1); dest->pub.buffer_height = 1; if (! cinfo->quantize_colors) dest->pub.put_pixel_rows = copy_pixel_rows; else if (cinfo->out_color_space == JCS_GRAYSCALE) dest->pub.put_pixel_rows = put_demapped_gray; else dest->pub.put_pixel_rows = put_demapped_rgb; } else { /* We will fwrite() directly from decompressor output buffer. */ /* Synthesize a JSAMPARRAY pointer structure */ /* Cast here implies near->far pointer conversion on PCs */ dest->pixrow = (JSAMPROW) dest->iobuffer; dest->pub.buffer = & dest->pixrow; dest->pub.buffer_height = 1; dest->pub.put_pixel_rows = put_pixel_rows; } return (djpeg_dest_ptr) dest; } #endif /* PPM_SUPPORTED */ jpeg-8d1/cdjpeg.c0000644000175000017500000001111206404546610012424 0ustar billbill/* * cdjpeg.c * * Copyright (C) 1991-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains common support routines used by the IJG application * programs (cjpeg, djpeg, jpegtran). */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #include /* to declare isupper(), tolower() */ #ifdef NEED_SIGNAL_CATCHER #include /* to declare signal() */ #endif #ifdef USE_SETMODE #include /* to declare setmode()'s parameter macros */ /* If you have setmode() but not , just delete this line: */ #include /* to declare setmode() */ #endif /* * Signal catcher to ensure that temporary files are removed before aborting. * NB: for Amiga Manx C this is actually a global routine named _abort(); * we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus... */ #ifdef NEED_SIGNAL_CATCHER static j_common_ptr sig_cinfo; void /* must be global for Manx C */ signal_catcher (int signum) { if (sig_cinfo != NULL) { if (sig_cinfo->err != NULL) /* turn off trace output */ sig_cinfo->err->trace_level = 0; jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */ } exit(EXIT_FAILURE); } GLOBAL(void) enable_signal_catcher (j_common_ptr cinfo) { sig_cinfo = cinfo; #ifdef SIGINT /* not all systems have SIGINT */ signal(SIGINT, signal_catcher); #endif #ifdef SIGTERM /* not all systems have SIGTERM */ signal(SIGTERM, signal_catcher); #endif } #endif /* * Optional progress monitor: display a percent-done figure on stderr. */ #ifdef PROGRESS_REPORT METHODDEF(void) progress_monitor (j_common_ptr cinfo) { cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress; int total_passes = prog->pub.total_passes + prog->total_extra_passes; int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit); if (percent_done != prog->percent_done) { prog->percent_done = percent_done; if (total_passes > 1) { fprintf(stderr, "\rPass %d/%d: %3d%% ", prog->pub.completed_passes + prog->completed_extra_passes + 1, total_passes, percent_done); } else { fprintf(stderr, "\r %3d%% ", percent_done); } fflush(stderr); } } GLOBAL(void) start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress) { /* Enable progress display, unless trace output is on */ if (cinfo->err->trace_level == 0) { progress->pub.progress_monitor = progress_monitor; progress->completed_extra_passes = 0; progress->total_extra_passes = 0; progress->percent_done = -1; cinfo->progress = &progress->pub; } } GLOBAL(void) end_progress_monitor (j_common_ptr cinfo) { /* Clear away progress display */ if (cinfo->err->trace_level == 0) { fprintf(stderr, "\r \r"); fflush(stderr); } } #endif /* * Case-insensitive matching of possibly-abbreviated keyword switches. * keyword is the constant keyword (must be lower case already), * minchars is length of minimum legal abbreviation. */ GLOBAL(boolean) keymatch (char * arg, const char * keyword, int minchars) { register int ca, ck; register int nmatched = 0; while ((ca = *arg++) != '\0') { if ((ck = *keyword++) == '\0') return FALSE; /* arg longer than keyword, no good */ if (isupper(ca)) /* force arg to lcase (assume ck is already) */ ca = tolower(ca); if (ca != ck) return FALSE; /* no good */ nmatched++; /* count matched characters */ } /* reached end of argument; fail if it's too short for unique abbrev */ if (nmatched < minchars) return FALSE; return TRUE; /* A-OK */ } /* * Routines to establish binary I/O mode for stdin and stdout. * Non-Unix systems often require some hacking to get out of text mode. */ GLOBAL(FILE *) read_stdin (void) { FILE * input_file = stdin; #ifdef USE_SETMODE /* need to hack file mode? */ setmode(fileno(stdin), O_BINARY); #endif #ifdef USE_FDOPEN /* need to re-open in binary mode? */ if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) { fprintf(stderr, "Cannot reopen stdin\n"); exit(EXIT_FAILURE); } #endif return input_file; } GLOBAL(FILE *) write_stdout (void) { FILE * output_file = stdout; #ifdef USE_SETMODE /* need to hack file mode? */ setmode(fileno(stdout), O_BINARY); #endif #ifdef USE_FDOPEN /* need to re-open in binary mode? */ if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) { fprintf(stderr, "Cannot reopen stdout\n"); exit(EXIT_FAILURE); } #endif return output_file; } jpeg-8d1/makermak.vc60000644000175000017500000000465211174127244013245 0ustar billbill# Microsoft Developer Studio Generated NMAKE File, Based on rdjpgcom.dsp !IF "$(CFG)" == "" CFG=rdjpgcom - Win32 !MESSAGE Keine Konfiguration angegeben. rdjpgcom - Win32 wird als Standard verwendet. !ENDIF !IF "$(CFG)" != "rdjpgcom - Win32" !MESSAGE Ungltige Konfiguration "$(CFG)" angegeben. !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "rdjpgcom.mak" CFG="rdjpgcom - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "rdjpgcom - Win32" (basierend auf "Win32 (x86) Console Application") !MESSAGE !ERROR Eine ungltige Konfiguration wurde angegeben. !ENDIF !IF "$(OS)" == "Windows_NT" NULL= !ELSE NULL=nul !ENDIF CPP=cl.exe RSC=rc.exe OUTDIR=.\rdjpgcom\Release INTDIR=.\rdjpgcom\Release # Begin Custom Macros OutDir=.\rdjpgcom\Release # End Custom Macros ALL : "$(OUTDIR)\rdjpgcom.exe" CLEAN : -@erase "$(INTDIR)\rdjpgcom.obj" -@erase "$(INTDIR)\vc60.idb" -@erase "$(OUTDIR)\rdjpgcom.exe" "$(OUTDIR)" : if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)" BSC32=bscmake.exe BSC32_FLAGS=/nologo /o"$(OUTDIR)\rdjpgcom.bsc" BSC32_SBRS= \ LINK32=link.exe LINK32_FLAGS=Release\jpeg.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /incremental:no /pdb:"$(OUTDIR)\rdjpgcom.pdb" /machine:I386 /out:"$(OUTDIR)\rdjpgcom.exe" LINK32_OBJS= \ "$(INTDIR)\rdjpgcom.obj" "$(OUTDIR)\rdjpgcom.exe" : "$(OUTDIR)" $(DEF_FILE) $(LINK32_OBJS) $(LINK32) @<< $(LINK32_FLAGS) $(LINK32_OBJS) << CPP_PROJ=/nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /Fp"$(INTDIR)\rdjpgcom.pch" /YX /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c .c{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .cpp{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .cxx{$(INTDIR)}.obj:: $(CPP) @<< $(CPP_PROJ) $< << .c{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << .cpp{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << .cxx{$(INTDIR)}.sbr:: $(CPP) @<< $(CPP_PROJ) $< << !IF "$(NO_EXTERNAL_DEPS)" != "1" !IF EXISTS("rdjpgcom.dep") !INCLUDE "rdjpgcom.dep" !ELSE !MESSAGE Warning: cannot find "rdjpgcom.dep" !ENDIF !ENDIF !IF "$(CFG)" == "rdjpgcom - Win32" SOURCE=.\rdjpgcom.c "$(INTDIR)\rdjpgcom.obj" : $(SOURCE) "$(INTDIR)" !ENDIF jpeg-8d1/jerror.h0000644000175000017500000003436511162247620012513 0ustar billbill/* * jerror.h * * Copyright (C) 1994-1997, Thomas G. Lane. * Modified 1997-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file defines the error and message codes for the JPEG library. * Edit this file to add new codes, or to translate the message strings to * some other language. * A set of error-reporting macros are defined too. Some applications using * the JPEG library may wish to include this file to get the error codes * and/or the macros. */ /* * To define the enum list of message codes, include this file without * defining macro JMESSAGE. To create a message string table, include it * again with a suitable JMESSAGE definition (see jerror.c for an example). */ #ifndef JMESSAGE #ifndef JERROR_H /* First time through, define the enum list */ #define JMAKE_ENUM_LIST #else /* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */ #define JMESSAGE(code,string) #endif /* JERROR_H */ #endif /* JMESSAGE */ #ifdef JMAKE_ENUM_LIST typedef enum { #define JMESSAGE(code,string) code , #endif /* JMAKE_ENUM_LIST */ JMESSAGE(JMSG_NOMESSAGE, "Bogus message code %d") /* Must be first entry! */ /* For maintenance convenience, list is alphabetical by message code name */ JMESSAGE(JERR_BAD_ALIGN_TYPE, "ALIGN_TYPE is wrong, please fix") JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix") JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode") JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS") JMESSAGE(JERR_BAD_CROP_SPEC, "Invalid crop request") JMESSAGE(JERR_BAD_DCT_COEF, "DCT coefficient out of range") JMESSAGE(JERR_BAD_DCTSIZE, "DCT scaled block size %dx%d not supported") JMESSAGE(JERR_BAD_DROP_SAMPLING, "Component index %d: mismatching sampling ratio %d:%d, %d:%d, %c") JMESSAGE(JERR_BAD_HUFF_TABLE, "Bogus Huffman table definition") JMESSAGE(JERR_BAD_IN_COLORSPACE, "Bogus input colorspace") JMESSAGE(JERR_BAD_J_COLORSPACE, "Bogus JPEG colorspace") JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length") JMESSAGE(JERR_BAD_LIB_VERSION, "Wrong JPEG library version: library is %d, caller expects %d") JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan") JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d") JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d") JMESSAGE(JERR_BAD_PROGRESSION, "Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d") JMESSAGE(JERR_BAD_PROG_SCRIPT, "Invalid progressive parameters at scan script entry %d") JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors") JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d") JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d") JMESSAGE(JERR_BAD_STRUCT_SIZE, "JPEG parameter struct mismatch: library thinks size is %u, caller expects %u") JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access") JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small") JMESSAGE(JERR_CANT_SUSPEND, "Suspension not allowed here") JMESSAGE(JERR_CCIR601_NOTIMPL, "CCIR601 sampling not implemented yet") JMESSAGE(JERR_COMPONENT_COUNT, "Too many color components: %d, max %d") JMESSAGE(JERR_CONVERSION_NOTIMPL, "Unsupported color conversion request") JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d") JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x") JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d") JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d") JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)") JMESSAGE(JERR_EMS_READ, "Read from EMS failed") JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed") JMESSAGE(JERR_EOI_EXPECTED, "Didn't expect more than one scan") JMESSAGE(JERR_FILE_READ, "Input file read error") JMESSAGE(JERR_FILE_WRITE, "Output file write error --- out of disk space?") JMESSAGE(JERR_FRACT_SAMPLE_NOTIMPL, "Fractional sampling not implemented yet") JMESSAGE(JERR_HUFF_CLEN_OVERFLOW, "Huffman code size table overflow") JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry") JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels") JMESSAGE(JERR_INPUT_EMPTY, "Empty input file") JMESSAGE(JERR_INPUT_EOF, "Premature end of input file") JMESSAGE(JERR_MISMATCHED_QUANT_TABLE, "Cannot transcode due to multiple use of quantization table %d") JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data") JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change") JMESSAGE(JERR_NOTIMPL, "Not implemented yet") JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time") JMESSAGE(JERR_NO_ARITH_TABLE, "Arithmetic table 0x%02x was not defined") JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported") JMESSAGE(JERR_NO_HUFF_TABLE, "Huffman table 0x%02x was not defined") JMESSAGE(JERR_NO_IMAGE, "JPEG datastream contains no image") JMESSAGE(JERR_NO_QUANT_TABLE, "Quantization table 0x%02x was not defined") JMESSAGE(JERR_NO_SOI, "Not a JPEG file: starts with 0x%02x 0x%02x") JMESSAGE(JERR_OUT_OF_MEMORY, "Insufficient memory (case %d)") JMESSAGE(JERR_QUANT_COMPONENTS, "Cannot quantize more than %d color components") JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors") JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors") JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers") JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker") JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x") JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers") JMESSAGE(JERR_SOS_NO_SOF, "Invalid JPEG file structure: SOS before SOF") JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s") JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file") JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file") JMESSAGE(JERR_TFILE_WRITE, "Write failed on temporary file --- out of disk space?") JMESSAGE(JERR_TOO_LITTLE_DATA, "Application transferred too few scanlines") JMESSAGE(JERR_UNKNOWN_MARKER, "Unsupported marker type 0x%02x") JMESSAGE(JERR_VIRTUAL_BUG, "Virtual array controller messed up") JMESSAGE(JERR_WIDTH_OVERFLOW, "Image too wide for this implementation") JMESSAGE(JERR_XMS_READ, "Read from XMS failed") JMESSAGE(JERR_XMS_WRITE, "Write to XMS failed") JMESSAGE(JMSG_COPYRIGHT, JCOPYRIGHT) JMESSAGE(JMSG_VERSION, JVERSION) JMESSAGE(JTRC_16BIT_TABLES, "Caution: quantization tables are too coarse for baseline JPEG") JMESSAGE(JTRC_ADOBE, "Adobe APP14 marker: version %d, flags 0x%04x 0x%04x, transform %d") JMESSAGE(JTRC_APP0, "Unknown APP0 marker (not JFIF), length %u") JMESSAGE(JTRC_APP14, "Unknown APP14 marker (not Adobe), length %u") JMESSAGE(JTRC_DAC, "Define Arithmetic Table 0x%02x: 0x%02x") JMESSAGE(JTRC_DHT, "Define Huffman Table 0x%02x") JMESSAGE(JTRC_DQT, "Define Quantization Table %d precision %d") JMESSAGE(JTRC_DRI, "Define Restart Interval %u") JMESSAGE(JTRC_EMS_CLOSE, "Freed EMS handle %u") JMESSAGE(JTRC_EMS_OPEN, "Obtained EMS handle %u") JMESSAGE(JTRC_EOI, "End Of Image") JMESSAGE(JTRC_HUFFBITS, " %3d %3d %3d %3d %3d %3d %3d %3d") JMESSAGE(JTRC_JFIF, "JFIF APP0 marker: version %d.%02d, density %dx%d %d") JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE, "Warning: thumbnail image size does not match data length %u") JMESSAGE(JTRC_JFIF_EXTENSION, "JFIF extension marker: type 0x%02x, length %u") JMESSAGE(JTRC_JFIF_THUMBNAIL, " with %d x %d thumbnail image") JMESSAGE(JTRC_MISC_MARKER, "Miscellaneous marker 0x%02x, length %u") JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x") JMESSAGE(JTRC_QUANTVALS, " %4u %4u %4u %4u %4u %4u %4u %4u") JMESSAGE(JTRC_QUANT_3_NCOLORS, "Quantizing to %d = %d*%d*%d colors") JMESSAGE(JTRC_QUANT_NCOLORS, "Quantizing to %d colors") JMESSAGE(JTRC_QUANT_SELECTED, "Selected %d colors for quantization") JMESSAGE(JTRC_RECOVERY_ACTION, "At marker 0x%02x, recovery action %d") JMESSAGE(JTRC_RST, "RST%d") JMESSAGE(JTRC_SMOOTH_NOTIMPL, "Smoothing not supported with nonstandard sampling ratios") JMESSAGE(JTRC_SOF, "Start Of Frame 0x%02x: width=%u, height=%u, components=%d") JMESSAGE(JTRC_SOF_COMPONENT, " Component %d: %dhx%dv q=%d") JMESSAGE(JTRC_SOI, "Start of Image") JMESSAGE(JTRC_SOS, "Start Of Scan: %d components") JMESSAGE(JTRC_SOS_COMPONENT, " Component %d: dc=%d ac=%d") JMESSAGE(JTRC_SOS_PARAMS, " Ss=%d, Se=%d, Ah=%d, Al=%d") JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s") JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s") JMESSAGE(JTRC_THUMB_JPEG, "JFIF extension marker: JPEG-compressed thumbnail image, length %u") JMESSAGE(JTRC_THUMB_PALETTE, "JFIF extension marker: palette thumbnail image, length %u") JMESSAGE(JTRC_THUMB_RGB, "JFIF extension marker: RGB thumbnail image, length %u") JMESSAGE(JTRC_UNKNOWN_IDS, "Unrecognized component IDs %d %d %d, assuming YCbCr") JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u") JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u") JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d") JMESSAGE(JWRN_ARITH_BAD_CODE, "Corrupt JPEG data: bad arithmetic code") JMESSAGE(JWRN_BOGUS_PROGRESSION, "Inconsistent progression sequence for component %d coefficient %d") JMESSAGE(JWRN_EXTRANEOUS_DATA, "Corrupt JPEG data: %u extraneous bytes before marker 0x%02x") JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment") JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code") JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d") JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file") JMESSAGE(JWRN_MUST_RESYNC, "Corrupt JPEG data: found marker 0x%02x instead of RST%d") JMESSAGE(JWRN_NOT_SEQUENTIAL, "Invalid SOS parameters for sequential JPEG") JMESSAGE(JWRN_TOO_MUCH_DATA, "Application transferred too many scanlines") #ifdef JMAKE_ENUM_LIST JMSG_LASTMSGCODE } J_MESSAGE_CODE; #undef JMAKE_ENUM_LIST #endif /* JMAKE_ENUM_LIST */ /* Zap JMESSAGE macro so that future re-inclusions do nothing by default */ #undef JMESSAGE #ifndef JERROR_H #define JERROR_H /* Macros to simplify using the error and trace message stuff */ /* The first parameter is either type of cinfo pointer */ /* Fatal errors (print message and exit) */ #define ERREXIT(cinfo,code) \ ((cinfo)->err->msg_code = (code), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define ERREXIT1(cinfo,code,p1) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define ERREXIT2(cinfo,code,p1,p2) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (cinfo)->err->msg_parm.i[1] = (p2), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define ERREXIT3(cinfo,code,p1,p2,p3) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (cinfo)->err->msg_parm.i[1] = (p2), \ (cinfo)->err->msg_parm.i[2] = (p3), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define ERREXIT4(cinfo,code,p1,p2,p3,p4) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (cinfo)->err->msg_parm.i[1] = (p2), \ (cinfo)->err->msg_parm.i[2] = (p3), \ (cinfo)->err->msg_parm.i[3] = (p4), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define ERREXIT6(cinfo,code,p1,p2,p3,p4,p5,p6) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (cinfo)->err->msg_parm.i[1] = (p2), \ (cinfo)->err->msg_parm.i[2] = (p3), \ (cinfo)->err->msg_parm.i[3] = (p4), \ (cinfo)->err->msg_parm.i[4] = (p5), \ (cinfo)->err->msg_parm.i[5] = (p6), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define ERREXITS(cinfo,code,str) \ ((cinfo)->err->msg_code = (code), \ strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \ (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) #define MAKESTMT(stuff) do { stuff } while (0) /* Nonfatal errors (we can keep going, but the data is probably corrupt) */ #define WARNMS(cinfo,code) \ ((cinfo)->err->msg_code = (code), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) #define WARNMS1(cinfo,code,p1) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) #define WARNMS2(cinfo,code,p1,p2) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (cinfo)->err->msg_parm.i[1] = (p2), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) /* Informational/debugging messages */ #define TRACEMS(cinfo,lvl,code) \ ((cinfo)->err->msg_code = (code), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) #define TRACEMS1(cinfo,lvl,code,p1) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) #define TRACEMS2(cinfo,lvl,code,p1,p2) \ ((cinfo)->err->msg_code = (code), \ (cinfo)->err->msg_parm.i[0] = (p1), \ (cinfo)->err->msg_parm.i[1] = (p2), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) #define TRACEMS3(cinfo,lvl,code,p1,p2,p3) \ MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); \ (cinfo)->err->msg_code = (code); \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) #define TRACEMS4(cinfo,lvl,code,p1,p2,p3,p4) \ MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ (cinfo)->err->msg_code = (code); \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) #define TRACEMS5(cinfo,lvl,code,p1,p2,p3,p4,p5) \ MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ _mp[4] = (p5); \ (cinfo)->err->msg_code = (code); \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) #define TRACEMS8(cinfo,lvl,code,p1,p2,p3,p4,p5,p6,p7,p8) \ MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ _mp[4] = (p5); _mp[5] = (p6); _mp[6] = (p7); _mp[7] = (p8); \ (cinfo)->err->msg_code = (code); \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) #define TRACEMSS(cinfo,lvl,code,str) \ ((cinfo)->err->msg_code = (code), \ strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \ (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) #endif /* JERROR_H */ jpeg-8d1/rdgif.c0000644000175000017500000000237006377372146012303 0ustar billbill/* * rdgif.c * * Copyright (C) 1991-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to read input images in GIF format. * ***************************************************************************** * NOTE: to avoid entanglements with Unisys' patent on LZW compression, * * the ability to read GIF files has been removed from the IJG distribution. * * Sorry about that. * ***************************************************************************** * * We are required to state that * "The Graphics Interchange Format(c) is the Copyright property of * CompuServe Incorporated. GIF(sm) is a Service Mark property of * CompuServe Incorporated." */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef GIF_SUPPORTED /* * The module selection routine for GIF format input. */ GLOBAL(cjpeg_source_ptr) jinit_read_gif (j_compress_ptr cinfo) { fprintf(stderr, "GIF input is unsupported for legal reasons. Sorry.\n"); exit(EXIT_FAILURE); return NULL; /* keep compiler happy */ } #endif /* GIF_SUPPORTED */ jpeg-8d1/jcparam.c0000644000175000017500000005277111126404046012616 0ustar billbill/* * jcparam.c * * Copyright (C) 1991-1998, Thomas G. Lane. * Modified 2003-2008 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains optional default-setting code for the JPEG compressor. * Applications do not have to use this file, but those that don't use it * must know a lot more about the innards of the JPEG code. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * Quantization table setup routines */ GLOBAL(void) jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, const unsigned int *basic_table, int scale_factor, boolean force_baseline) /* Define a quantization table equal to the basic_table times * a scale factor (given as a percentage). * If force_baseline is TRUE, the computed quantization table entries * are limited to 1..255 for JPEG baseline compatibility. */ { JQUANT_TBL ** qtblptr; int i; long temp; /* Safety check to ensure start_compress not called yet. */ if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (which_tbl < 0 || which_tbl >= NUM_QUANT_TBLS) ERREXIT1(cinfo, JERR_DQT_INDEX, which_tbl); qtblptr = & cinfo->quant_tbl_ptrs[which_tbl]; if (*qtblptr == NULL) *qtblptr = jpeg_alloc_quant_table((j_common_ptr) cinfo); for (i = 0; i < DCTSIZE2; i++) { temp = ((long) basic_table[i] * scale_factor + 50L) / 100L; /* limit the values to the valid range */ if (temp <= 0L) temp = 1L; if (temp > 32767L) temp = 32767L; /* max quantizer needed for 12 bits */ if (force_baseline && temp > 255L) temp = 255L; /* limit to baseline range if requested */ (*qtblptr)->quantval[i] = (UINT16) temp; } /* Initialize sent_table FALSE so table will be written to JPEG file. */ (*qtblptr)->sent_table = FALSE; } /* These are the sample quantization tables given in JPEG spec section K.1. * The spec says that the values given produce "good" quality, and * when divided by 2, "very good" quality. */ static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = { 16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56, 14, 17, 22, 29, 51, 87, 80, 62, 18, 22, 37, 56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, 49, 64, 78, 87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99 }; static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = { 17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 }; GLOBAL(void) jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline) /* Set or change the 'quality' (quantization) setting, using default tables * and straight percentage-scaling quality scales. * This entry point allows different scalings for luminance and chrominance. */ { /* Set up two quantization tables using the specified scaling */ jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, cinfo->q_scale_factor[0], force_baseline); jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, cinfo->q_scale_factor[1], force_baseline); } GLOBAL(void) jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor, boolean force_baseline) /* Set or change the 'quality' (quantization) setting, using default tables * and a straight percentage-scaling quality scale. In most cases it's better * to use jpeg_set_quality (below); this entry point is provided for * applications that insist on a linear percentage scaling. */ { /* Set up two quantization tables using the specified scaling */ jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, scale_factor, force_baseline); jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, scale_factor, force_baseline); } GLOBAL(int) jpeg_quality_scaling (int quality) /* Convert a user-specified quality rating to a percentage scaling factor * for an underlying quantization table, using our recommended scaling curve. * The input 'quality' factor should be 0 (terrible) to 100 (very good). */ { /* Safety limit on quality factor. Convert 0 to 1 to avoid zero divide. */ if (quality <= 0) quality = 1; if (quality > 100) quality = 100; /* The basic table is used as-is (scaling 100) for a quality of 50. * Qualities 50..100 are converted to scaling percentage 200 - 2*Q; * note that at Q=100 the scaling is 0, which will cause jpeg_add_quant_table * to make all the table entries 1 (hence, minimum quantization loss). * Qualities 1..50 are converted to scaling percentage 5000/Q. */ if (quality < 50) quality = 5000 / quality; else quality = 200 - quality*2; return quality; } GLOBAL(void) jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline) /* Set or change the 'quality' (quantization) setting, using default tables. * This is the standard quality-adjusting entry point for typical user * interfaces; only those who want detailed control over quantization tables * would use the preceding three routines directly. */ { /* Convert user 0-100 rating to percentage scaling */ quality = jpeg_quality_scaling(quality); /* Set up standard quality tables */ jpeg_set_linear_quality(cinfo, quality, force_baseline); } /* * Huffman table setup routines */ LOCAL(void) add_huff_table (j_compress_ptr cinfo, JHUFF_TBL **htblptr, const UINT8 *bits, const UINT8 *val) /* Define a Huffman table */ { int nsymbols, len; if (*htblptr == NULL) *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); /* Copy the number-of-symbols-of-each-code-length counts */ MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits)); /* Validate the counts. We do this here mainly so we can copy the right * number of symbols from the val[] array, without risking marching off * the end of memory. jchuff.c will do a more thorough test later. */ nsymbols = 0; for (len = 1; len <= 16; len++) nsymbols += bits[len]; if (nsymbols < 1 || nsymbols > 256) ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); MEMCOPY((*htblptr)->huffval, val, nsymbols * SIZEOF(UINT8)); /* Initialize sent_table FALSE so table will be written to JPEG file. */ (*htblptr)->sent_table = FALSE; } LOCAL(void) std_huff_tables (j_compress_ptr cinfo) /* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ /* IMPORTANT: these are only valid for 8-bit data precision! */ { static const UINT8 bits_dc_luminance[17] = { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; static const UINT8 val_dc_luminance[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; static const UINT8 bits_dc_chrominance[17] = { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; static const UINT8 val_dc_chrominance[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; static const UINT8 bits_ac_luminance[17] = { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; static const UINT8 val_ac_luminance[] = { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa }; static const UINT8 bits_ac_chrominance[17] = { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; static const UINT8 val_ac_chrominance[] = { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa }; add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[0], bits_dc_luminance, val_dc_luminance); add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[0], bits_ac_luminance, val_ac_luminance); add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[1], bits_dc_chrominance, val_dc_chrominance); add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[1], bits_ac_chrominance, val_ac_chrominance); } /* * Default parameter setup for compression. * * Applications that don't choose to use this routine must do their * own setup of all these parameters. Alternately, you can call this * to establish defaults and then alter parameters selectively. This * is the recommended approach since, if we add any new parameters, * your code will still work (they'll be set to reasonable defaults). */ GLOBAL(void) jpeg_set_defaults (j_compress_ptr cinfo) { int i; /* Safety check to ensure start_compress not called yet. */ if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* Allocate comp_info array large enough for maximum component count. * Array is made permanent in case application wants to compress * multiple images at same param settings. */ if (cinfo->comp_info == NULL) cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, MAX_COMPONENTS * SIZEOF(jpeg_component_info)); /* Initialize everything not dependent on the color space */ cinfo->scale_num = 1; /* 1:1 scaling */ cinfo->scale_denom = 1; cinfo->data_precision = BITS_IN_JSAMPLE; /* Set up two quantization tables using default quality of 75 */ jpeg_set_quality(cinfo, 75, TRUE); /* Set up two Huffman tables */ std_huff_tables(cinfo); /* Initialize default arithmetic coding conditioning */ for (i = 0; i < NUM_ARITH_TBLS; i++) { cinfo->arith_dc_L[i] = 0; cinfo->arith_dc_U[i] = 1; cinfo->arith_ac_K[i] = 5; } /* Default is no multiple-scan output */ cinfo->scan_info = NULL; cinfo->num_scans = 0; /* Expect normal source image, not raw downsampled data */ cinfo->raw_data_in = FALSE; /* Use Huffman coding, not arithmetic coding, by default */ cinfo->arith_code = FALSE; /* By default, don't do extra passes to optimize entropy coding */ cinfo->optimize_coding = FALSE; /* The standard Huffman tables are only valid for 8-bit data precision. * If the precision is higher, force optimization on so that usable * tables will be computed. This test can be removed if default tables * are supplied that are valid for the desired precision. */ if (cinfo->data_precision > 8) cinfo->optimize_coding = TRUE; /* By default, use the simpler non-cosited sampling alignment */ cinfo->CCIR601_sampling = FALSE; /* By default, apply fancy downsampling */ cinfo->do_fancy_downsampling = TRUE; /* No input smoothing */ cinfo->smoothing_factor = 0; /* DCT algorithm preference */ cinfo->dct_method = JDCT_DEFAULT; /* No restart markers */ cinfo->restart_interval = 0; cinfo->restart_in_rows = 0; /* Fill in default JFIF marker parameters. Note that whether the marker * will actually be written is determined by jpeg_set_colorspace. * * By default, the library emits JFIF version code 1.01. * An application that wants to emit JFIF 1.02 extension markers should set * JFIF_minor_version to 2. We could probably get away with just defaulting * to 1.02, but there may still be some decoders in use that will complain * about that; saying 1.01 should minimize compatibility problems. */ cinfo->JFIF_major_version = 1; /* Default JFIF version = 1.01 */ cinfo->JFIF_minor_version = 1; cinfo->density_unit = 0; /* Pixel size is unknown by default */ cinfo->X_density = 1; /* Pixel aspect ratio is square by default */ cinfo->Y_density = 1; /* Choose JPEG colorspace based on input space, set defaults accordingly */ jpeg_default_colorspace(cinfo); } /* * Select an appropriate JPEG colorspace for in_color_space. */ GLOBAL(void) jpeg_default_colorspace (j_compress_ptr cinfo) { switch (cinfo->in_color_space) { case JCS_GRAYSCALE: jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); break; case JCS_RGB: jpeg_set_colorspace(cinfo, JCS_YCbCr); break; case JCS_YCbCr: jpeg_set_colorspace(cinfo, JCS_YCbCr); break; case JCS_CMYK: jpeg_set_colorspace(cinfo, JCS_CMYK); /* By default, no translation */ break; case JCS_YCCK: jpeg_set_colorspace(cinfo, JCS_YCCK); break; case JCS_UNKNOWN: jpeg_set_colorspace(cinfo, JCS_UNKNOWN); break; default: ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); } } /* * Set the JPEG colorspace, and choose colorspace-dependent default values. */ GLOBAL(void) jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace) { jpeg_component_info * compptr; int ci; #define SET_COMP(index,id,hsamp,vsamp,quant,dctbl,actbl) \ (compptr = &cinfo->comp_info[index], \ compptr->component_id = (id), \ compptr->h_samp_factor = (hsamp), \ compptr->v_samp_factor = (vsamp), \ compptr->quant_tbl_no = (quant), \ compptr->dc_tbl_no = (dctbl), \ compptr->ac_tbl_no = (actbl) ) /* Safety check to ensure start_compress not called yet. */ if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* For all colorspaces, we use Q and Huff tables 0 for luminance components, * tables 1 for chrominance components. */ cinfo->jpeg_color_space = colorspace; cinfo->write_JFIF_header = FALSE; /* No marker for non-JFIF colorspaces */ cinfo->write_Adobe_marker = FALSE; /* write no Adobe marker by default */ switch (colorspace) { case JCS_GRAYSCALE: cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ cinfo->num_components = 1; /* JFIF specifies component ID 1 */ SET_COMP(0, 1, 1,1, 0, 0,0); break; case JCS_RGB: cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */ cinfo->num_components = 3; SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0); SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0); SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0); break; case JCS_YCbCr: cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ cinfo->num_components = 3; /* JFIF specifies component IDs 1,2,3 */ /* We default to 2x2 subsamples of chrominance */ SET_COMP(0, 1, 2,2, 0, 0,0); SET_COMP(1, 2, 1,1, 1, 1,1); SET_COMP(2, 3, 1,1, 1, 1,1); break; case JCS_CMYK: cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */ cinfo->num_components = 4; SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0); SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0); SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0); SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0); break; case JCS_YCCK: cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */ cinfo->num_components = 4; SET_COMP(0, 1, 2,2, 0, 0,0); SET_COMP(1, 2, 1,1, 1, 1,1); SET_COMP(2, 3, 1,1, 1, 1,1); SET_COMP(3, 4, 2,2, 0, 0,0); break; case JCS_UNKNOWN: cinfo->num_components = cinfo->input_components; if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS) ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, MAX_COMPONENTS); for (ci = 0; ci < cinfo->num_components; ci++) { SET_COMP(ci, ci, 1,1, 0, 0,0); } break; default: ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); } } #ifdef C_PROGRESSIVE_SUPPORTED LOCAL(jpeg_scan_info *) fill_a_scan (jpeg_scan_info * scanptr, int ci, int Ss, int Se, int Ah, int Al) /* Support routine: generate one scan for specified component */ { scanptr->comps_in_scan = 1; scanptr->component_index[0] = ci; scanptr->Ss = Ss; scanptr->Se = Se; scanptr->Ah = Ah; scanptr->Al = Al; scanptr++; return scanptr; } LOCAL(jpeg_scan_info *) fill_scans (jpeg_scan_info * scanptr, int ncomps, int Ss, int Se, int Ah, int Al) /* Support routine: generate one scan for each component */ { int ci; for (ci = 0; ci < ncomps; ci++) { scanptr->comps_in_scan = 1; scanptr->component_index[0] = ci; scanptr->Ss = Ss; scanptr->Se = Se; scanptr->Ah = Ah; scanptr->Al = Al; scanptr++; } return scanptr; } LOCAL(jpeg_scan_info *) fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al) /* Support routine: generate interleaved DC scan if possible, else N scans */ { int ci; if (ncomps <= MAX_COMPS_IN_SCAN) { /* Single interleaved DC scan */ scanptr->comps_in_scan = ncomps; for (ci = 0; ci < ncomps; ci++) scanptr->component_index[ci] = ci; scanptr->Ss = scanptr->Se = 0; scanptr->Ah = Ah; scanptr->Al = Al; scanptr++; } else { /* Noninterleaved DC scan for each component */ scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al); } return scanptr; } /* * Create a recommended progressive-JPEG script. * cinfo->num_components and cinfo->jpeg_color_space must be correct. */ GLOBAL(void) jpeg_simple_progression (j_compress_ptr cinfo) { int ncomps = cinfo->num_components; int nscans; jpeg_scan_info * scanptr; /* Safety check to ensure start_compress not called yet. */ if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* Figure space needed for script. Calculation must match code below! */ if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { /* Custom script for YCbCr color images. */ nscans = 10; } else { /* All-purpose script for other color spaces. */ if (ncomps > MAX_COMPS_IN_SCAN) nscans = 6 * ncomps; /* 2 DC + 4 AC scans per component */ else nscans = 2 + 4 * ncomps; /* 2 DC scans; 4 AC scans per component */ } /* Allocate space for script. * We need to put it in the permanent pool in case the application performs * multiple compressions without changing the settings. To avoid a memory * leak if jpeg_simple_progression is called repeatedly for the same JPEG * object, we try to re-use previously allocated space, and we allocate * enough space to handle YCbCr even if initially asked for grayscale. */ if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) { cinfo->script_space_size = MAX(nscans, 10); cinfo->script_space = (jpeg_scan_info *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, cinfo->script_space_size * SIZEOF(jpeg_scan_info)); } scanptr = cinfo->script_space; cinfo->scan_info = scanptr; cinfo->num_scans = nscans; if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { /* Custom script for YCbCr color images. */ /* Initial DC scan */ scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); /* Initial AC scan: get some luma data out in a hurry */ scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2); /* Chroma data is too small to be worth expending many scans on */ scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 1); scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 1); /* Complete spectral selection for luma AC */ scanptr = fill_a_scan(scanptr, 0, 6, 63, 0, 2); /* Refine next bit of luma AC */ scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1); /* Finish DC successive approximation */ scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); /* Finish AC successive approximation */ scanptr = fill_a_scan(scanptr, 2, 1, 63, 1, 0); scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0); /* Luma bottom bit comes last since it's usually largest scan */ scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0); } else { /* All-purpose script for other color spaces. */ /* Successive approximation first pass */ scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2); scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2); /* Successive approximation second pass */ scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1); /* Successive approximation final pass */ scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0); } } #endif /* C_PROGRESSIVE_SUPPORTED */ jpeg-8d1/jcprepct.c0000644000175000017500000002767007744547044013034 0ustar billbill/* * jcprepct.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains the compression preprocessing controller. * This controller manages the color conversion, downsampling, * and edge expansion steps. * * Most of the complexity here is associated with buffering input rows * as required by the downsampler. See the comments at the head of * jcsample.c for the downsampler's needs. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* At present, jcsample.c can request context rows only for smoothing. * In the future, we might also need context rows for CCIR601 sampling * or other more-complex downsampling procedures. The code to support * context rows should be compiled only if needed. */ #ifdef INPUT_SMOOTHING_SUPPORTED #define CONTEXT_ROWS_SUPPORTED #endif /* * For the simple (no-context-row) case, we just need to buffer one * row group's worth of pixels for the downsampling step. At the bottom of * the image, we pad to a full row group by replicating the last pixel row. * The downsampler's last output row is then replicated if needed to pad * out to a full iMCU row. * * When providing context rows, we must buffer three row groups' worth of * pixels. Three row groups are physically allocated, but the row pointer * arrays are made five row groups high, with the extra pointers above and * below "wrapping around" to point to the last and first real row groups. * This allows the downsampler to access the proper context rows. * At the top and bottom of the image, we create dummy context rows by * copying the first or last real pixel row. This copying could be avoided * by pointer hacking as is done in jdmainct.c, but it doesn't seem worth the * trouble on the compression side. */ /* Private buffer controller object */ typedef struct { struct jpeg_c_prep_controller pub; /* public fields */ /* Downsampling input buffer. This buffer holds color-converted data * until we have enough to do a downsample step. */ JSAMPARRAY color_buf[MAX_COMPONENTS]; JDIMENSION rows_to_go; /* counts rows remaining in source image */ int next_buf_row; /* index of next row to store in color_buf */ #ifdef CONTEXT_ROWS_SUPPORTED /* only needed for context case */ int this_row_group; /* starting row index of group to process */ int next_buf_stop; /* downsample when we reach this index */ #endif } my_prep_controller; typedef my_prep_controller * my_prep_ptr; /* * Initialize for a processing pass. */ METHODDEF(void) start_pass_prep (j_compress_ptr cinfo, J_BUF_MODE pass_mode) { my_prep_ptr prep = (my_prep_ptr) cinfo->prep; if (pass_mode != JBUF_PASS_THRU) ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); /* Initialize total-height counter for detecting bottom of image */ prep->rows_to_go = cinfo->image_height; /* Mark the conversion buffer empty */ prep->next_buf_row = 0; #ifdef CONTEXT_ROWS_SUPPORTED /* Preset additional state variables for context mode. * These aren't used in non-context mode, so we needn't test which mode. */ prep->this_row_group = 0; /* Set next_buf_stop to stop after two row groups have been read in. */ prep->next_buf_stop = 2 * cinfo->max_v_samp_factor; #endif } /* * Expand an image vertically from height input_rows to height output_rows, * by duplicating the bottom row. */ LOCAL(void) expand_bottom_edge (JSAMPARRAY image_data, JDIMENSION num_cols, int input_rows, int output_rows) { register int row; for (row = input_rows; row < output_rows; row++) { jcopy_sample_rows(image_data, input_rows-1, image_data, row, 1, num_cols); } } /* * Process some data in the simple no-context case. * * Preprocessor output data is counted in "row groups". A row group * is defined to be v_samp_factor sample rows of each component. * Downsampling will produce this much data from each max_v_samp_factor * input rows. */ METHODDEF(void) pre_process_data (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail) { my_prep_ptr prep = (my_prep_ptr) cinfo->prep; int numrows, ci; JDIMENSION inrows; jpeg_component_info * compptr; while (*in_row_ctr < in_rows_avail && *out_row_group_ctr < out_row_groups_avail) { /* Do color conversion to fill the conversion buffer. */ inrows = in_rows_avail - *in_row_ctr; numrows = cinfo->max_v_samp_factor - prep->next_buf_row; numrows = (int) MIN((JDIMENSION) numrows, inrows); (*cinfo->cconvert->color_convert) (cinfo, input_buf + *in_row_ctr, prep->color_buf, (JDIMENSION) prep->next_buf_row, numrows); *in_row_ctr += numrows; prep->next_buf_row += numrows; prep->rows_to_go -= numrows; /* If at bottom of image, pad to fill the conversion buffer. */ if (prep->rows_to_go == 0 && prep->next_buf_row < cinfo->max_v_samp_factor) { for (ci = 0; ci < cinfo->num_components; ci++) { expand_bottom_edge(prep->color_buf[ci], cinfo->image_width, prep->next_buf_row, cinfo->max_v_samp_factor); } prep->next_buf_row = cinfo->max_v_samp_factor; } /* If we've filled the conversion buffer, empty it. */ if (prep->next_buf_row == cinfo->max_v_samp_factor) { (*cinfo->downsample->downsample) (cinfo, prep->color_buf, (JDIMENSION) 0, output_buf, *out_row_group_ctr); prep->next_buf_row = 0; (*out_row_group_ctr)++; } /* If at bottom of image, pad the output to a full iMCU height. * Note we assume the caller is providing a one-iMCU-height output buffer! */ if (prep->rows_to_go == 0 && *out_row_group_ctr < out_row_groups_avail) { for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { numrows = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; expand_bottom_edge(output_buf[ci], compptr->width_in_blocks * compptr->DCT_h_scaled_size, (int) (*out_row_group_ctr * numrows), (int) (out_row_groups_avail * numrows)); } *out_row_group_ctr = out_row_groups_avail; break; /* can exit outer loop without test */ } } } #ifdef CONTEXT_ROWS_SUPPORTED /* * Process some data in the context case. */ METHODDEF(void) pre_process_context (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail) { my_prep_ptr prep = (my_prep_ptr) cinfo->prep; int numrows, ci; int buf_height = cinfo->max_v_samp_factor * 3; JDIMENSION inrows; while (*out_row_group_ctr < out_row_groups_avail) { if (*in_row_ctr < in_rows_avail) { /* Do color conversion to fill the conversion buffer. */ inrows = in_rows_avail - *in_row_ctr; numrows = prep->next_buf_stop - prep->next_buf_row; numrows = (int) MIN((JDIMENSION) numrows, inrows); (*cinfo->cconvert->color_convert) (cinfo, input_buf + *in_row_ctr, prep->color_buf, (JDIMENSION) prep->next_buf_row, numrows); /* Pad at top of image, if first time through */ if (prep->rows_to_go == cinfo->image_height) { for (ci = 0; ci < cinfo->num_components; ci++) { int row; for (row = 1; row <= cinfo->max_v_samp_factor; row++) { jcopy_sample_rows(prep->color_buf[ci], 0, prep->color_buf[ci], -row, 1, cinfo->image_width); } } } *in_row_ctr += numrows; prep->next_buf_row += numrows; prep->rows_to_go -= numrows; } else { /* Return for more data, unless we are at the bottom of the image. */ if (prep->rows_to_go != 0) break; /* When at bottom of image, pad to fill the conversion buffer. */ if (prep->next_buf_row < prep->next_buf_stop) { for (ci = 0; ci < cinfo->num_components; ci++) { expand_bottom_edge(prep->color_buf[ci], cinfo->image_width, prep->next_buf_row, prep->next_buf_stop); } prep->next_buf_row = prep->next_buf_stop; } } /* If we've gotten enough data, downsample a row group. */ if (prep->next_buf_row == prep->next_buf_stop) { (*cinfo->downsample->downsample) (cinfo, prep->color_buf, (JDIMENSION) prep->this_row_group, output_buf, *out_row_group_ctr); (*out_row_group_ctr)++; /* Advance pointers with wraparound as necessary. */ prep->this_row_group += cinfo->max_v_samp_factor; if (prep->this_row_group >= buf_height) prep->this_row_group = 0; if (prep->next_buf_row >= buf_height) prep->next_buf_row = 0; prep->next_buf_stop = prep->next_buf_row + cinfo->max_v_samp_factor; } } } /* * Create the wrapped-around downsampling input buffer needed for context mode. */ LOCAL(void) create_context_buffer (j_compress_ptr cinfo) { my_prep_ptr prep = (my_prep_ptr) cinfo->prep; int rgroup_height = cinfo->max_v_samp_factor; int ci, i; jpeg_component_info * compptr; JSAMPARRAY true_buffer, fake_buffer; /* Grab enough space for fake row pointers for all the components; * we need five row groups' worth of pointers for each component. */ fake_buffer = (JSAMPARRAY) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (cinfo->num_components * 5 * rgroup_height) * SIZEOF(JSAMPROW)); for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Allocate the actual buffer space (3 row groups) for this component. * We make the buffer wide enough to allow the downsampler to edge-expand * horizontally within the buffer, if it so chooses. */ true_buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) (((long) compptr->width_in_blocks * cinfo->min_DCT_h_scaled_size * cinfo->max_h_samp_factor) / compptr->h_samp_factor), (JDIMENSION) (3 * rgroup_height)); /* Copy true buffer row pointers into the middle of the fake row array */ MEMCOPY(fake_buffer + rgroup_height, true_buffer, 3 * rgroup_height * SIZEOF(JSAMPROW)); /* Fill in the above and below wraparound pointers */ for (i = 0; i < rgroup_height; i++) { fake_buffer[i] = true_buffer[2 * rgroup_height + i]; fake_buffer[4 * rgroup_height + i] = true_buffer[i]; } prep->color_buf[ci] = fake_buffer + rgroup_height; fake_buffer += 5 * rgroup_height; /* point to space for next component */ } } #endif /* CONTEXT_ROWS_SUPPORTED */ /* * Initialize preprocessing controller. */ GLOBAL(void) jinit_c_prep_controller (j_compress_ptr cinfo, boolean need_full_buffer) { my_prep_ptr prep; int ci; jpeg_component_info * compptr; if (need_full_buffer) /* safety check */ ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); prep = (my_prep_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_prep_controller)); cinfo->prep = (struct jpeg_c_prep_controller *) prep; prep->pub.start_pass = start_pass_prep; /* Allocate the color conversion buffer. * We make the buffer wide enough to allow the downsampler to edge-expand * horizontally within the buffer, if it so chooses. */ if (cinfo->downsample->need_context_rows) { /* Set up to provide context rows */ #ifdef CONTEXT_ROWS_SUPPORTED prep->pub.pre_process_data = pre_process_context; create_context_buffer(cinfo); #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif } else { /* No context, just make it tall enough for one row group */ prep->pub.pre_process_data = pre_process_data; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { prep->color_buf[ci] = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) (((long) compptr->width_in_blocks * cinfo->min_DCT_h_scaled_size * cinfo->max_h_samp_factor) / compptr->h_samp_factor), (JDIMENSION) cinfo->max_v_samp_factor); } } } jpeg-8d1/jmemmac.c0000644000175000017500000002244306371155532012614 0ustar billbill/* * jmemmac.c * * Copyright (C) 1992-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * jmemmac.c provides an Apple Macintosh implementation of the system- * dependent portion of the JPEG memory manager. * * If you use jmemmac.c, then you must define USE_MAC_MEMMGR in the * JPEG_INTERNALS part of jconfig.h. * * jmemmac.c uses the Macintosh toolbox routines NewPtr and DisposePtr * instead of malloc and free. It accurately determines the amount of * memory available by using CompactMem. Notice that if left to its * own devices, this code can chew up all available space in the * application's zone, with the exception of the rather small "slop" * factor computed in jpeg_mem_available(). The application can ensure * that more space is left over by reducing max_memory_to_use. * * Large images are swapped to disk using temporary files and System 7.0+'s * temporary folder functionality. * * Note that jmemmac.c depends on two features of MacOS that were first * introduced in System 7: FindFolder and the FSSpec-based calls. * If your application uses jmemmac.c and is run under System 6 or earlier, * and the jpeg library decides it needs a temporary file, it will abort, * printing error messages about requiring System 7. (If no temporary files * are created, it will run fine.) * * If you want to use jmemmac.c in an application that might be used with * System 6 or earlier, then you should remove dependencies on FindFolder * and the FSSpec calls. You will need to replace FindFolder with some * other mechanism for finding a place to put temporary files, and you * should replace the FSSpec calls with their HFS equivalents: * * FSpDelete -> HDelete * FSpGetFInfo -> HGetFInfo * FSpCreate -> HCreate * FSpOpenDF -> HOpen *** Note: not HOpenDF *** * FSMakeFSSpec -> (fill in spec by hand.) * * (Use HOpen instead of HOpenDF. HOpen is just a glue-interface to PBHOpen, * which is on all HFS macs. HOpenDF is a System 7 addition which avoids the * ages-old problem of names starting with a period.) * * Contributed by Sam Bushell (jsam@iagu.on.net) and * Dan Gildor (gyld@in-touch.com). */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jmemsys.h" /* import the system-dependent declarations */ #ifndef USE_MAC_MEMMGR /* make sure user got configuration right */ You forgot to define USE_MAC_MEMMGR in jconfig.h. /* deliberate syntax error */ #endif #include /* we use the MacOS memory manager */ #include /* we use the MacOS File stuff */ #include /* we use the MacOS HFS stuff */ #include /* for smSystemScript */ #include /* we use Gestalt to test for specific functionality */ #ifndef TEMP_FILE_NAME /* can override from jconfig.h or Makefile */ #define TEMP_FILE_NAME "JPG%03d.TMP" #endif static int next_file_num; /* to distinguish among several temp files */ /* * Memory allocation and freeing are controlled by the MacOS library * routines NewPtr() and DisposePtr(), which allocate fixed-address * storage. Unfortunately, the IJG library isn't smart enough to cope * with relocatable storage. */ GLOBAL(void *) jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) { return (void *) NewPtr(sizeofobject); } GLOBAL(void) jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) { DisposePtr((Ptr) object); } /* * "Large" objects are treated the same as "small" ones. * NB: we include FAR keywords in the routine declarations simply for * consistency with the rest of the IJG code; FAR should expand to empty * on rational architectures like the Mac. */ GLOBAL(void FAR *) jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) { return (void FAR *) NewPtr(sizeofobject); } GLOBAL(void) jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) { DisposePtr((Ptr) object); } /* * This routine computes the total memory space available for allocation. */ GLOBAL(long) jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, long max_bytes_needed, long already_allocated) { long limit = cinfo->mem->max_memory_to_use - already_allocated; long slop, mem; /* Don't ask for more than what application has told us we may use */ if (max_bytes_needed > limit && limit > 0) max_bytes_needed = limit; /* Find whether there's a big enough free block in the heap. * CompactMem tries to create a contiguous block of the requested size, * and then returns the size of the largest free block (which could be * much more or much less than we asked for). * We add some slop to ensure we don't use up all available memory. */ slop = max_bytes_needed / 16 + 32768L; mem = CompactMem(max_bytes_needed + slop) - slop; if (mem < 0) mem = 0; /* sigh, couldn't even get the slop */ /* Don't take more than the application says we can have */ if (mem > limit && limit > 0) mem = limit; return mem; } /* * Backing store (temporary file) management. * Backing store objects are only used when the value returned by * jpeg_mem_available is less than the total space needed. You can dispense * with these routines if you have plenty of virtual memory; see jmemnobs.c. */ METHODDEF(void) read_backing_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { long bytes = byte_count; long retVal; if ( SetFPos ( info->temp_file, fsFromStart, file_offset ) != noErr ) ERREXIT(cinfo, JERR_TFILE_SEEK); retVal = FSRead ( info->temp_file, &bytes, (unsigned char *) buffer_address ); if ( retVal != noErr || bytes != byte_count ) ERREXIT(cinfo, JERR_TFILE_READ); } METHODDEF(void) write_backing_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { long bytes = byte_count; long retVal; if ( SetFPos ( info->temp_file, fsFromStart, file_offset ) != noErr ) ERREXIT(cinfo, JERR_TFILE_SEEK); retVal = FSWrite ( info->temp_file, &bytes, (unsigned char *) buffer_address ); if ( retVal != noErr || bytes != byte_count ) ERREXIT(cinfo, JERR_TFILE_WRITE); } METHODDEF(void) close_backing_store (j_common_ptr cinfo, backing_store_ptr info) { FSClose ( info->temp_file ); FSpDelete ( &(info->tempSpec) ); } /* * Initial opening of a backing-store object. * * This version uses FindFolder to find the Temporary Items folder, * and puts the temporary file in there. */ GLOBAL(void) jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { short tmpRef, vRefNum; long dirID; FInfo finderInfo; FSSpec theSpec; Str255 fName; OSErr osErr; long gestaltResponse = 0; /* Check that FSSpec calls are available. */ osErr = Gestalt( gestaltFSAttr, &gestaltResponse ); if ( ( osErr != noErr ) || !( gestaltResponse & (1<temp_name, TEMP_FILE_NAME, next_file_num); strcpy ( (Ptr)fName+1, info->temp_name ); *fName = strlen (info->temp_name); osErr = FSMakeFSSpec ( vRefNum, dirID, fName, &theSpec ); if ( (osErr = FSpGetFInfo ( &theSpec, &finderInfo ) ) != noErr ) break; } osErr = FSpCreate ( &theSpec, '????', '????', smSystemScript ); if ( osErr != noErr ) ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); osErr = FSpOpenDF ( &theSpec, fsRdWrPerm, &(info->temp_file) ); if ( osErr != noErr ) ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); info->tempSpec = theSpec; info->read_backing_store = read_backing_store; info->write_backing_store = write_backing_store; info->close_backing_store = close_backing_store; TRACEMSS(cinfo, 1, JTRC_TFILE_OPEN, info->temp_name); } /* * These routines take care of any system-dependent initialization and * cleanup required. */ GLOBAL(long) jpeg_mem_init (j_common_ptr cinfo) { next_file_num = 0; /* max_memory_to_use will be initialized to FreeMem()'s result; * the calling application might later reduce it, for example * to leave room to invoke multiple JPEG objects. * Note that FreeMem returns the total number of free bytes; * it may not be possible to allocate a single block of this size. */ return FreeMem(); } GLOBAL(void) jpeg_mem_term (j_common_ptr cinfo) { /* no work */ } jpeg-8d1/jcarith.c0000644000175000017500000006703511647517506012642 0ustar billbill/* * jcarith.c * * Developed 1997-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains portable arithmetic entropy encoding routines for JPEG * (implementing the ISO/IEC IS 10918-1 and CCITT Recommendation ITU-T T.81). * * Both sequential and progressive modes are supported in this single module. * * Suspension is not currently supported in this module. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Expanded entropy encoder object for arithmetic encoding. */ typedef struct { struct jpeg_entropy_encoder pub; /* public fields */ INT32 c; /* C register, base of coding interval, layout as in sec. D.1.3 */ INT32 a; /* A register, normalized size of coding interval */ INT32 sc; /* counter for stacked 0xFF values which might overflow */ INT32 zc; /* counter for pending 0x00 output values which might * * be discarded at the end ("Pacman" termination) */ int ct; /* bit shift counter, determines when next byte will be written */ int buffer; /* buffer for most recent output byte != 0xFF */ int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ int dc_context[MAX_COMPS_IN_SCAN]; /* context index for DC conditioning */ unsigned int restarts_to_go; /* MCUs left in this restart interval */ int next_restart_num; /* next restart number to write (0-7) */ /* Pointers to statistics areas (these workspaces have image lifespan) */ unsigned char * dc_stats[NUM_ARITH_TBLS]; unsigned char * ac_stats[NUM_ARITH_TBLS]; /* Statistics bin for coding with fixed probability 0.5 */ unsigned char fixed_bin[4]; } arith_entropy_encoder; typedef arith_entropy_encoder * arith_entropy_ptr; /* The following two definitions specify the allocation chunk size * for the statistics area. * According to sections F.1.4.4.1.3 and F.1.4.4.2, we need at least * 49 statistics bins for DC, and 245 statistics bins for AC coding. * * We use a compact representation with 1 byte per statistics bin, * thus the numbers directly represent byte sizes. * This 1 byte per statistics bin contains the meaning of the MPS * (more probable symbol) in the highest bit (mask 0x80), and the * index into the probability estimation state machine table * in the lower bits (mask 0x7F). */ #define DC_STAT_BINS 64 #define AC_STAT_BINS 256 /* NOTE: Uncomment the following #define if you want to use the * given formula for calculating the AC conditioning parameter Kx * for spectral selection progressive coding in section G.1.3.2 * of the spec (Kx = Kmin + SRL (8 + Se - Kmin) 4). * Although the spec and P&M authors claim that this "has proven * to give good results for 8 bit precision samples", I'm not * convinced yet that this is really beneficial. * Early tests gave only very marginal compression enhancements * (a few - around 5 or so - bytes even for very large files), * which would turn out rather negative if we'd suppress the * DAC (Define Arithmetic Conditioning) marker segments for * the default parameters in the future. * Note that currently the marker writing module emits 12-byte * DAC segments for a full-component scan in a color image. * This is not worth worrying about IMHO. However, since the * spec defines the default values to be used if the tables * are omitted (unlike Huffman tables, which are required * anyway), one might optimize this behaviour in the future, * and then it would be disadvantageous to use custom tables if * they don't provide sufficient gain to exceed the DAC size. * * On the other hand, I'd consider it as a reasonable result * that the conditioning has no significant influence on the * compression performance. This means that the basic * statistical model is already rather stable. * * Thus, at the moment, we use the default conditioning values * anyway, and do not use the custom formula. * #define CALCULATE_SPECTRAL_CONDITIONING */ /* IRIGHT_SHIFT is like RIGHT_SHIFT, but works on int rather than INT32. * We assume that int right shift is unsigned if INT32 right shift is, * which should be safe. */ #ifdef RIGHT_SHIFT_IS_UNSIGNED #define ISHIFT_TEMPS int ishift_temp; #define IRIGHT_SHIFT(x,shft) \ ((ishift_temp = (x)) < 0 ? \ (ishift_temp >> (shft)) | ((~0) << (16-(shft))) : \ (ishift_temp >> (shft))) #else #define ISHIFT_TEMPS #define IRIGHT_SHIFT(x,shft) ((x) >> (shft)) #endif LOCAL(void) emit_byte (int val, j_compress_ptr cinfo) /* Write next output byte; we do not support suspension in this module. */ { struct jpeg_destination_mgr * dest = cinfo->dest; *dest->next_output_byte++ = (JOCTET) val; if (--dest->free_in_buffer == 0) if (! (*dest->empty_output_buffer) (cinfo)) ERREXIT(cinfo, JERR_CANT_SUSPEND); } /* * Finish up at the end of an arithmetic-compressed scan. */ METHODDEF(void) finish_pass (j_compress_ptr cinfo) { arith_entropy_ptr e = (arith_entropy_ptr) cinfo->entropy; INT32 temp; /* Section D.1.8: Termination of encoding */ /* Find the e->c in the coding interval with the largest * number of trailing zero bits */ if ((temp = (e->a - 1 + e->c) & 0xFFFF0000L) < e->c) e->c = temp + 0x8000L; else e->c = temp; /* Send remaining bytes to output */ e->c <<= e->ct; if (e->c & 0xF8000000L) { /* One final overflow has to be handled */ if (e->buffer >= 0) { if (e->zc) do emit_byte(0x00, cinfo); while (--e->zc); emit_byte(e->buffer + 1, cinfo); if (e->buffer + 1 == 0xFF) emit_byte(0x00, cinfo); } e->zc += e->sc; /* carry-over converts stacked 0xFF bytes to 0x00 */ e->sc = 0; } else { if (e->buffer == 0) ++e->zc; else if (e->buffer >= 0) { if (e->zc) do emit_byte(0x00, cinfo); while (--e->zc); emit_byte(e->buffer, cinfo); } if (e->sc) { if (e->zc) do emit_byte(0x00, cinfo); while (--e->zc); do { emit_byte(0xFF, cinfo); emit_byte(0x00, cinfo); } while (--e->sc); } } /* Output final bytes only if they are not 0x00 */ if (e->c & 0x7FFF800L) { if (e->zc) /* output final pending zero bytes */ do emit_byte(0x00, cinfo); while (--e->zc); emit_byte((e->c >> 19) & 0xFF, cinfo); if (((e->c >> 19) & 0xFF) == 0xFF) emit_byte(0x00, cinfo); if (e->c & 0x7F800L) { emit_byte((e->c >> 11) & 0xFF, cinfo); if (((e->c >> 11) & 0xFF) == 0xFF) emit_byte(0x00, cinfo); } } } /* * The core arithmetic encoding routine (common in JPEG and JBIG). * This needs to go as fast as possible. * Machine-dependent optimization facilities * are not utilized in this portable implementation. * However, this code should be fairly efficient and * may be a good base for further optimizations anyway. * * Parameter 'val' to be encoded may be 0 or 1 (binary decision). * * Note: I've added full "Pacman" termination support to the * byte output routines, which is equivalent to the optional * Discard_final_zeros procedure (Figure D.15) in the spec. * Thus, we always produce the shortest possible output * stream compliant to the spec (no trailing zero bytes, * except for FF stuffing). * * I've also introduced a new scheme for accessing * the probability estimation state machine table, * derived from Markus Kuhn's JBIG implementation. */ LOCAL(void) arith_encode (j_compress_ptr cinfo, unsigned char *st, int val) { register arith_entropy_ptr e = (arith_entropy_ptr) cinfo->entropy; register unsigned char nl, nm; register INT32 qe, temp; register int sv; /* Fetch values from our compact representation of Table D.3(D.2): * Qe values and probability estimation state machine */ sv = *st; qe = jpeg_aritab[sv & 0x7F]; /* => Qe_Value */ nl = qe & 0xFF; qe >>= 8; /* Next_Index_LPS + Switch_MPS */ nm = qe & 0xFF; qe >>= 8; /* Next_Index_MPS */ /* Encode & estimation procedures per sections D.1.4 & D.1.5 */ e->a -= qe; if (val != (sv >> 7)) { /* Encode the less probable symbol */ if (e->a >= qe) { /* If the interval size (qe) for the less probable symbol (LPS) * is larger than the interval size for the MPS, then exchange * the two symbols for coding efficiency, otherwise code the LPS * as usual: */ e->c += e->a; e->a = qe; } *st = (sv & 0x80) ^ nl; /* Estimate_after_LPS */ } else { /* Encode the more probable symbol */ if (e->a >= 0x8000L) return; /* A >= 0x8000 -> ready, no renormalization required */ if (e->a < qe) { /* If the interval size (qe) for the less probable symbol (LPS) * is larger than the interval size for the MPS, then exchange * the two symbols for coding efficiency: */ e->c += e->a; e->a = qe; } *st = (sv & 0x80) ^ nm; /* Estimate_after_MPS */ } /* Renormalization & data output per section D.1.6 */ do { e->a <<= 1; e->c <<= 1; if (--e->ct == 0) { /* Another byte is ready for output */ temp = e->c >> 19; if (temp > 0xFF) { /* Handle overflow over all stacked 0xFF bytes */ if (e->buffer >= 0) { if (e->zc) do emit_byte(0x00, cinfo); while (--e->zc); emit_byte(e->buffer + 1, cinfo); if (e->buffer + 1 == 0xFF) emit_byte(0x00, cinfo); } e->zc += e->sc; /* carry-over converts stacked 0xFF bytes to 0x00 */ e->sc = 0; /* Note: The 3 spacer bits in the C register guarantee * that the new buffer byte can't be 0xFF here * (see page 160 in the P&M JPEG book). */ e->buffer = temp & 0xFF; /* new output byte, might overflow later */ } else if (temp == 0xFF) { ++e->sc; /* stack 0xFF byte (which might overflow later) */ } else { /* Output all stacked 0xFF bytes, they will not overflow any more */ if (e->buffer == 0) ++e->zc; else if (e->buffer >= 0) { if (e->zc) do emit_byte(0x00, cinfo); while (--e->zc); emit_byte(e->buffer, cinfo); } if (e->sc) { if (e->zc) do emit_byte(0x00, cinfo); while (--e->zc); do { emit_byte(0xFF, cinfo); emit_byte(0x00, cinfo); } while (--e->sc); } e->buffer = temp & 0xFF; /* new output byte (can still overflow) */ } e->c &= 0x7FFFFL; e->ct += 8; } } while (e->a < 0x8000L); } /* * Emit a restart marker & resynchronize predictions. */ LOCAL(void) emit_restart (j_compress_ptr cinfo, int restart_num) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; int ci; jpeg_component_info * compptr; finish_pass(cinfo); emit_byte(0xFF, cinfo); emit_byte(JPEG_RST0 + restart_num, cinfo); /* Re-initialize statistics areas */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* DC needs no table for refinement scan */ if (cinfo->Ss == 0 && cinfo->Ah == 0) { MEMZERO(entropy->dc_stats[compptr->dc_tbl_no], DC_STAT_BINS); /* Reset DC predictions to 0 */ entropy->last_dc_val[ci] = 0; entropy->dc_context[ci] = 0; } /* AC needs no table when not present */ if (cinfo->Se) { MEMZERO(entropy->ac_stats[compptr->ac_tbl_no], AC_STAT_BINS); } } /* Reset arithmetic encoding variables */ entropy->c = 0; entropy->a = 0x10000L; entropy->sc = 0; entropy->zc = 0; entropy->ct = 11; entropy->buffer = -1; /* empty */ } /* * MCU encoding for DC initial scan (either spectral selection, * or first pass of successive approximation). */ METHODDEF(boolean) encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; JBLOCKROW block; unsigned char *st; int blkn, ci, tbl; int v, v2, m; ISHIFT_TEMPS /* Emit restart marker if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { emit_restart(cinfo, entropy->next_restart_num); entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } /* Encode the MCU data blocks */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { block = MCU_data[blkn]; ci = cinfo->MCU_membership[blkn]; tbl = cinfo->cur_comp_info[ci]->dc_tbl_no; /* Compute the DC value after the required point transform by Al. * This is simply an arithmetic right shift. */ m = IRIGHT_SHIFT((int) ((*block)[0]), cinfo->Al); /* Sections F.1.4.1 & F.1.4.4.1: Encoding of DC coefficients */ /* Table F.4: Point to statistics bin S0 for DC coefficient coding */ st = entropy->dc_stats[tbl] + entropy->dc_context[ci]; /* Figure F.4: Encode_DC_DIFF */ if ((v = m - entropy->last_dc_val[ci]) == 0) { arith_encode(cinfo, st, 0); entropy->dc_context[ci] = 0; /* zero diff category */ } else { entropy->last_dc_val[ci] = m; arith_encode(cinfo, st, 1); /* Figure F.6: Encoding nonzero value v */ /* Figure F.7: Encoding the sign of v */ if (v > 0) { arith_encode(cinfo, st + 1, 0); /* Table F.4: SS = S0 + 1 */ st += 2; /* Table F.4: SP = S0 + 2 */ entropy->dc_context[ci] = 4; /* small positive diff category */ } else { v = -v; arith_encode(cinfo, st + 1, 1); /* Table F.4: SS = S0 + 1 */ st += 3; /* Table F.4: SN = S0 + 3 */ entropy->dc_context[ci] = 8; /* small negative diff category */ } /* Figure F.8: Encoding the magnitude category of v */ m = 0; if (v -= 1) { arith_encode(cinfo, st, 1); m = 1; v2 = v; st = entropy->dc_stats[tbl] + 20; /* Table F.4: X1 = 20 */ while (v2 >>= 1) { arith_encode(cinfo, st, 1); m <<= 1; st += 1; } } arith_encode(cinfo, st, 0); /* Section F.1.4.4.1.2: Establish dc_context conditioning category */ if (m < (int) ((1L << cinfo->arith_dc_L[tbl]) >> 1)) entropy->dc_context[ci] = 0; /* zero diff category */ else if (m > (int) ((1L << cinfo->arith_dc_U[tbl]) >> 1)) entropy->dc_context[ci] += 8; /* large diff category */ /* Figure F.9: Encoding the magnitude bit pattern of v */ st += 14; while (m >>= 1) arith_encode(cinfo, st, (m & v) ? 1 : 0); } } return TRUE; } /* * MCU encoding for AC initial scan (either spectral selection, * or first pass of successive approximation). */ METHODDEF(boolean) encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; JBLOCKROW block; unsigned char *st; int tbl, k, ke; int v, v2, m; const int * natural_order; /* Emit restart marker if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { emit_restart(cinfo, entropy->next_restart_num); entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } natural_order = cinfo->natural_order; /* Encode the MCU data block */ block = MCU_data[0]; tbl = cinfo->cur_comp_info[0]->ac_tbl_no; /* Sections F.1.4.2 & F.1.4.4.2: Encoding of AC coefficients */ /* Establish EOB (end-of-block) index */ for (ke = cinfo->Se; ke > 0; ke--) /* We must apply the point transform by Al. For AC coefficients this * is an integer division with rounding towards 0. To do this portably * in C, we shift after obtaining the absolute value. */ if ((v = (*block)[natural_order[ke]]) >= 0) { if (v >>= cinfo->Al) break; } else { v = -v; if (v >>= cinfo->Al) break; } /* Figure F.5: Encode_AC_Coefficients */ for (k = cinfo->Ss; k <= ke; k++) { st = entropy->ac_stats[tbl] + 3 * (k - 1); arith_encode(cinfo, st, 0); /* EOB decision */ for (;;) { if ((v = (*block)[natural_order[k]]) >= 0) { if (v >>= cinfo->Al) { arith_encode(cinfo, st + 1, 1); arith_encode(cinfo, entropy->fixed_bin, 0); break; } } else { v = -v; if (v >>= cinfo->Al) { arith_encode(cinfo, st + 1, 1); arith_encode(cinfo, entropy->fixed_bin, 1); break; } } arith_encode(cinfo, st + 1, 0); st += 3; k++; } st += 2; /* Figure F.8: Encoding the magnitude category of v */ m = 0; if (v -= 1) { arith_encode(cinfo, st, 1); m = 1; v2 = v; if (v2 >>= 1) { arith_encode(cinfo, st, 1); m <<= 1; st = entropy->ac_stats[tbl] + (k <= cinfo->arith_ac_K[tbl] ? 189 : 217); while (v2 >>= 1) { arith_encode(cinfo, st, 1); m <<= 1; st += 1; } } } arith_encode(cinfo, st, 0); /* Figure F.9: Encoding the magnitude bit pattern of v */ st += 14; while (m >>= 1) arith_encode(cinfo, st, (m & v) ? 1 : 0); } /* Encode EOB decision only if k <= cinfo->Se */ if (k <= cinfo->Se) { st = entropy->ac_stats[tbl] + 3 * (k - 1); arith_encode(cinfo, st, 1); } return TRUE; } /* * MCU encoding for DC successive approximation refinement scan. */ METHODDEF(boolean) encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; unsigned char *st; int Al, blkn; /* Emit restart marker if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { emit_restart(cinfo, entropy->next_restart_num); entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } st = entropy->fixed_bin; /* use fixed probability estimation */ Al = cinfo->Al; /* Encode the MCU data blocks */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { /* We simply emit the Al'th bit of the DC coefficient value. */ arith_encode(cinfo, st, (MCU_data[blkn][0][0] >> Al) & 1); } return TRUE; } /* * MCU encoding for AC successive approximation refinement scan. */ METHODDEF(boolean) encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; JBLOCKROW block; unsigned char *st; int tbl, k, ke, kex; int v; const int * natural_order; /* Emit restart marker if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { emit_restart(cinfo, entropy->next_restart_num); entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } natural_order = cinfo->natural_order; /* Encode the MCU data block */ block = MCU_data[0]; tbl = cinfo->cur_comp_info[0]->ac_tbl_no; /* Section G.1.3.3: Encoding of AC coefficients */ /* Establish EOB (end-of-block) index */ for (ke = cinfo->Se; ke > 0; ke--) /* We must apply the point transform by Al. For AC coefficients this * is an integer division with rounding towards 0. To do this portably * in C, we shift after obtaining the absolute value. */ if ((v = (*block)[natural_order[ke]]) >= 0) { if (v >>= cinfo->Al) break; } else { v = -v; if (v >>= cinfo->Al) break; } /* Establish EOBx (previous stage end-of-block) index */ for (kex = ke; kex > 0; kex--) if ((v = (*block)[natural_order[kex]]) >= 0) { if (v >>= cinfo->Ah) break; } else { v = -v; if (v >>= cinfo->Ah) break; } /* Figure G.10: Encode_AC_Coefficients_SA */ for (k = cinfo->Ss; k <= ke; k++) { st = entropy->ac_stats[tbl] + 3 * (k - 1); if (k > kex) arith_encode(cinfo, st, 0); /* EOB decision */ for (;;) { if ((v = (*block)[natural_order[k]]) >= 0) { if (v >>= cinfo->Al) { if (v >> 1) /* previously nonzero coef */ arith_encode(cinfo, st + 2, (v & 1)); else { /* newly nonzero coef */ arith_encode(cinfo, st + 1, 1); arith_encode(cinfo, entropy->fixed_bin, 0); } break; } } else { v = -v; if (v >>= cinfo->Al) { if (v >> 1) /* previously nonzero coef */ arith_encode(cinfo, st + 2, (v & 1)); else { /* newly nonzero coef */ arith_encode(cinfo, st + 1, 1); arith_encode(cinfo, entropy->fixed_bin, 1); } break; } } arith_encode(cinfo, st + 1, 0); st += 3; k++; } } /* Encode EOB decision only if k <= cinfo->Se */ if (k <= cinfo->Se) { st = entropy->ac_stats[tbl] + 3 * (k - 1); arith_encode(cinfo, st, 1); } return TRUE; } /* * Encode and output one MCU's worth of arithmetic-compressed coefficients. */ METHODDEF(boolean) encode_mcu (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; jpeg_component_info * compptr; JBLOCKROW block; unsigned char *st; int blkn, ci, tbl, k, ke; int v, v2, m; const int * natural_order; /* Emit restart marker if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { emit_restart(cinfo, entropy->next_restart_num); entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } natural_order = cinfo->natural_order; /* Encode the MCU data blocks */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { block = MCU_data[blkn]; ci = cinfo->MCU_membership[blkn]; compptr = cinfo->cur_comp_info[ci]; /* Sections F.1.4.1 & F.1.4.4.1: Encoding of DC coefficients */ tbl = compptr->dc_tbl_no; /* Table F.4: Point to statistics bin S0 for DC coefficient coding */ st = entropy->dc_stats[tbl] + entropy->dc_context[ci]; /* Figure F.4: Encode_DC_DIFF */ if ((v = (*block)[0] - entropy->last_dc_val[ci]) == 0) { arith_encode(cinfo, st, 0); entropy->dc_context[ci] = 0; /* zero diff category */ } else { entropy->last_dc_val[ci] = (*block)[0]; arith_encode(cinfo, st, 1); /* Figure F.6: Encoding nonzero value v */ /* Figure F.7: Encoding the sign of v */ if (v > 0) { arith_encode(cinfo, st + 1, 0); /* Table F.4: SS = S0 + 1 */ st += 2; /* Table F.4: SP = S0 + 2 */ entropy->dc_context[ci] = 4; /* small positive diff category */ } else { v = -v; arith_encode(cinfo, st + 1, 1); /* Table F.4: SS = S0 + 1 */ st += 3; /* Table F.4: SN = S0 + 3 */ entropy->dc_context[ci] = 8; /* small negative diff category */ } /* Figure F.8: Encoding the magnitude category of v */ m = 0; if (v -= 1) { arith_encode(cinfo, st, 1); m = 1; v2 = v; st = entropy->dc_stats[tbl] + 20; /* Table F.4: X1 = 20 */ while (v2 >>= 1) { arith_encode(cinfo, st, 1); m <<= 1; st += 1; } } arith_encode(cinfo, st, 0); /* Section F.1.4.4.1.2: Establish dc_context conditioning category */ if (m < (int) ((1L << cinfo->arith_dc_L[tbl]) >> 1)) entropy->dc_context[ci] = 0; /* zero diff category */ else if (m > (int) ((1L << cinfo->arith_dc_U[tbl]) >> 1)) entropy->dc_context[ci] += 8; /* large diff category */ /* Figure F.9: Encoding the magnitude bit pattern of v */ st += 14; while (m >>= 1) arith_encode(cinfo, st, (m & v) ? 1 : 0); } /* Sections F.1.4.2 & F.1.4.4.2: Encoding of AC coefficients */ if ((ke = cinfo->lim_Se) == 0) continue; tbl = compptr->ac_tbl_no; /* Establish EOB (end-of-block) index */ do { if ((*block)[natural_order[ke]]) break; } while (--ke); /* Figure F.5: Encode_AC_Coefficients */ for (k = 0; k < ke;) { st = entropy->ac_stats[tbl] + 3 * k; arith_encode(cinfo, st, 0); /* EOB decision */ while ((v = (*block)[natural_order[++k]]) == 0) { arith_encode(cinfo, st + 1, 0); st += 3; } arith_encode(cinfo, st + 1, 1); /* Figure F.6: Encoding nonzero value v */ /* Figure F.7: Encoding the sign of v */ if (v > 0) { arith_encode(cinfo, entropy->fixed_bin, 0); } else { v = -v; arith_encode(cinfo, entropy->fixed_bin, 1); } st += 2; /* Figure F.8: Encoding the magnitude category of v */ m = 0; if (v -= 1) { arith_encode(cinfo, st, 1); m = 1; v2 = v; if (v2 >>= 1) { arith_encode(cinfo, st, 1); m <<= 1; st = entropy->ac_stats[tbl] + (k <= cinfo->arith_ac_K[tbl] ? 189 : 217); while (v2 >>= 1) { arith_encode(cinfo, st, 1); m <<= 1; st += 1; } } } arith_encode(cinfo, st, 0); /* Figure F.9: Encoding the magnitude bit pattern of v */ st += 14; while (m >>= 1) arith_encode(cinfo, st, (m & v) ? 1 : 0); } /* Encode EOB decision only if k < cinfo->lim_Se */ if (k < cinfo->lim_Se) { st = entropy->ac_stats[tbl] + 3 * k; arith_encode(cinfo, st, 1); } } return TRUE; } /* * Initialize for an arithmetic-compressed scan. */ METHODDEF(void) start_pass (j_compress_ptr cinfo, boolean gather_statistics) { arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy; int ci, tbl; jpeg_component_info * compptr; if (gather_statistics) /* Make sure to avoid that in the master control logic! * We are fully adaptive here and need no extra * statistics gathering pass! */ ERREXIT(cinfo, JERR_NOT_COMPILED); /* We assume jcmaster.c already validated the progressive scan parameters. */ /* Select execution routines */ if (cinfo->progressive_mode) { if (cinfo->Ah == 0) { if (cinfo->Ss == 0) entropy->pub.encode_mcu = encode_mcu_DC_first; else entropy->pub.encode_mcu = encode_mcu_AC_first; } else { if (cinfo->Ss == 0) entropy->pub.encode_mcu = encode_mcu_DC_refine; else entropy->pub.encode_mcu = encode_mcu_AC_refine; } } else entropy->pub.encode_mcu = encode_mcu; /* Allocate & initialize requested statistics areas */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* DC needs no table for refinement scan */ if (cinfo->Ss == 0 && cinfo->Ah == 0) { tbl = compptr->dc_tbl_no; if (tbl < 0 || tbl >= NUM_ARITH_TBLS) ERREXIT1(cinfo, JERR_NO_ARITH_TABLE, tbl); if (entropy->dc_stats[tbl] == NULL) entropy->dc_stats[tbl] = (unsigned char *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, DC_STAT_BINS); MEMZERO(entropy->dc_stats[tbl], DC_STAT_BINS); /* Initialize DC predictions to 0 */ entropy->last_dc_val[ci] = 0; entropy->dc_context[ci] = 0; } /* AC needs no table when not present */ if (cinfo->Se) { tbl = compptr->ac_tbl_no; if (tbl < 0 || tbl >= NUM_ARITH_TBLS) ERREXIT1(cinfo, JERR_NO_ARITH_TABLE, tbl); if (entropy->ac_stats[tbl] == NULL) entropy->ac_stats[tbl] = (unsigned char *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, AC_STAT_BINS); MEMZERO(entropy->ac_stats[tbl], AC_STAT_BINS); #ifdef CALCULATE_SPECTRAL_CONDITIONING if (cinfo->progressive_mode) /* Section G.1.3.2: Set appropriate arithmetic conditioning value Kx */ cinfo->arith_ac_K[tbl] = cinfo->Ss + ((8 + cinfo->Se - cinfo->Ss) >> 4); #endif } } /* Initialize arithmetic encoding variables */ entropy->c = 0; entropy->a = 0x10000L; entropy->sc = 0; entropy->zc = 0; entropy->ct = 11; entropy->buffer = -1; /* empty */ /* Initialize restart stuff */ entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num = 0; } /* * Module initialization routine for arithmetic entropy encoding. */ GLOBAL(void) jinit_arith_encoder (j_compress_ptr cinfo) { arith_entropy_ptr entropy; int i; entropy = (arith_entropy_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(arith_entropy_encoder)); cinfo->entropy = (struct jpeg_entropy_encoder *) entropy; entropy->pub.start_pass = start_pass; entropy->pub.finish_pass = finish_pass; /* Mark tables unallocated */ for (i = 0; i < NUM_ARITH_TBLS; i++) { entropy->dc_stats[i] = NULL; entropy->ac_stats[i] = NULL; } /* Initialize index for fixed probability estimation */ entropy->fixed_bin[0] = 113; } jpeg-8d1/ltmain.sh0000644000175000017500000105152211674632456012667 0ustar billbill # libtool (GNU libtool) 2.4.2 # Written by Gordon Matzigkeit , 1996 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, # 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. # This is free software; see the source for copying conditions. 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If not, a copy # can be downloaded from http://www.gnu.org/licenses/gpl.html, # or obtained by writing to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # Usage: $progname [OPTION]... [MODE-ARG]... # # Provide generalized library-building support services. # # --config show all configuration variables # --debug enable verbose shell tracing # -n, --dry-run display commands without modifying any files # --features display basic configuration information and exit # --mode=MODE use operation mode MODE # --preserve-dup-deps don't remove duplicate dependency libraries # --quiet, --silent don't print informational messages # --no-quiet, --no-silent # print informational messages (default) # --no-warn don't display warning messages # --tag=TAG use configuration variables from tag TAG # -v, --verbose print more informational messages than default # --no-verbose don't print the extra informational messages # --version print version information # -h, --help, --help-all print short, long, or detailed help message # # MODE must be one of the following: # # clean remove files from the build directory # compile compile a source file into a libtool object # execute automatically set library path, then run a program # finish complete the installation of libtool libraries # install install libraries or executables # link create a library or an executable # uninstall remove libraries from an installed directory # # MODE-ARGS vary depending on the MODE. When passed as first option, # `--mode=MODE' may be abbreviated as `MODE' or a unique abbreviation of that. # Try `$progname --help --mode=MODE' for a more detailed description of MODE. # # When reporting a bug, please describe a test case to reproduce it and # include the following information: # # host-triplet: $host # shell: $SHELL # compiler: $LTCC # compiler flags: $LTCFLAGS # linker: $LD (gnu? $with_gnu_ld) # $progname: (GNU libtool) 2.4.2 # automake: $automake_version # autoconf: $autoconf_version # # Report bugs to . # GNU libtool home page: . # General help using GNU software: . PROGRAM=libtool PACKAGE=libtool VERSION=2.4.2 TIMESTAMP="" package_revision=1.3337 # Be Bourne compatible if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then emulate sh NULLCMD=: # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which # is contrary to our usage. Disable this feature. alias -g '${1+"$@"}'='"$@"' setopt NO_GLOB_SUBST else case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac fi BIN_SH=xpg4; export BIN_SH # for Tru64 DUALCASE=1; export DUALCASE # for MKS sh # A function that is used when there is no print builtin or printf. func_fallback_echo () { eval 'cat <<_LTECHO_EOF $1 _LTECHO_EOF' } # NLS nuisances: We save the old values to restore during execute mode. lt_user_locale= lt_safe_locale= for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES do eval "if test \"\${$lt_var+set}\" = set; then save_$lt_var=\$$lt_var $lt_var=C export $lt_var lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\" lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\" fi" done LC_ALL=C LANGUAGE=C export LANGUAGE LC_ALL $lt_unset CDPATH # Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh # is ksh but when the shell is invoked as "sh" and the current value of # the _XPG environment variable is not equal to 1 (one), the special # positional parameter $0, within a function call, is the name of the # function. progpath="$0" : ${CP="cp -f"} test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'} : ${MAKE="make"} : ${MKDIR="mkdir"} : ${MV="mv -f"} : ${RM="rm -f"} : ${SHELL="${CONFIG_SHELL-/bin/sh}"} : ${Xsed="$SED -e 1s/^X//"} # Global variables: EXIT_SUCCESS=0 EXIT_FAILURE=1 EXIT_MISMATCH=63 # $? = 63 is used to indicate version mismatch to missing. EXIT_SKIP=77 # $? = 77 is used to indicate a skipped test to automake. exit_status=$EXIT_SUCCESS # Make sure IFS has a sensible default lt_nl=' ' IFS=" $lt_nl" dirname="s,/[^/]*$,," basename="s,^.*/,," # func_dirname file append nondir_replacement # Compute the dirname of FILE. If nonempty, add APPEND to the result, # otherwise set result to NONDIR_REPLACEMENT. func_dirname () { func_dirname_result=`$ECHO "${1}" | $SED "$dirname"` if test "X$func_dirname_result" = "X${1}"; then func_dirname_result="${3}" else func_dirname_result="$func_dirname_result${2}" fi } # func_dirname may be replaced by extended shell implementation # func_basename file func_basename () { func_basename_result=`$ECHO "${1}" | $SED "$basename"` } # func_basename may be replaced by extended shell implementation # func_dirname_and_basename file append nondir_replacement # perform func_basename and func_dirname in a single function # call: # dirname: Compute the dirname of FILE. If nonempty, # add APPEND to the result, otherwise set result # to NONDIR_REPLACEMENT. # value returned in "$func_dirname_result" # basename: Compute filename of FILE. # value retuned in "$func_basename_result" # Implementation must be kept synchronized with func_dirname # and func_basename. For efficiency, we do not delegate to # those functions but instead duplicate the functionality here. func_dirname_and_basename () { # Extract subdirectory from the argument. func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"` if test "X$func_dirname_result" = "X${1}"; then func_dirname_result="${3}" else func_dirname_result="$func_dirname_result${2}" fi func_basename_result=`$ECHO "${1}" | $SED -e "$basename"` } # func_dirname_and_basename may be replaced by extended shell implementation # func_stripname prefix suffix name # strip PREFIX and SUFFIX off of NAME. # PREFIX and SUFFIX must not contain globbing or regex special # characters, hashes, percent signs, but SUFFIX may contain a leading # dot (in which case that matches only a dot). # func_strip_suffix prefix name func_stripname () { case ${2} in .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;; *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;; esac } # func_stripname may be replaced by extended shell implementation # These SED scripts presuppose an absolute path with a trailing slash. pathcar='s,^/\([^/]*\).*$,\1,' pathcdr='s,^/[^/]*,,' removedotparts=':dotsl s@/\./@/@g t dotsl s,/\.$,/,' collapseslashes='s@/\{1,\}@/@g' finalslash='s,/*$,/,' # func_normal_abspath PATH # Remove doubled-up and trailing slashes, "." path components, # and cancel out any ".." path components in PATH after making # it an absolute path. # value returned in "$func_normal_abspath_result" func_normal_abspath () { # Start from root dir and reassemble the path. func_normal_abspath_result= func_normal_abspath_tpath=$1 func_normal_abspath_altnamespace= case $func_normal_abspath_tpath in "") # Empty path, that just means $cwd. func_stripname '' '/' "`pwd`" func_normal_abspath_result=$func_stripname_result return ;; # The next three entries are used to spot a run of precisely # two leading slashes without using negated character classes; # we take advantage of case's first-match behaviour. ///*) # Unusual form of absolute path, do nothing. ;; //*) # Not necessarily an ordinary path; POSIX reserves leading '//' # and for example Cygwin uses it to access remote file shares # over CIFS/SMB, so we conserve a leading double slash if found. func_normal_abspath_altnamespace=/ ;; /*) # Absolute path, do nothing. ;; *) # Relative path, prepend $cwd. func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath ;; esac # Cancel out all the simple stuff to save iterations. We also want # the path to end with a slash for ease of parsing, so make sure # there is one (and only one) here. func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \ -e "$removedotparts" -e "$collapseslashes" -e "$finalslash"` while :; do # Processed it all yet? if test "$func_normal_abspath_tpath" = / ; then # If we ascended to the root using ".." the result may be empty now. if test -z "$func_normal_abspath_result" ; then func_normal_abspath_result=/ fi break fi func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \ -e "$pathcar"` func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \ -e "$pathcdr"` # Figure out what to do with it case $func_normal_abspath_tcomponent in "") # Trailing empty path component, ignore it. ;; ..) # Parent dir; strip last assembled component from result. func_dirname "$func_normal_abspath_result" func_normal_abspath_result=$func_dirname_result ;; *) # Actual path component, append it. func_normal_abspath_result=$func_normal_abspath_result/$func_normal_abspath_tcomponent ;; esac done # Restore leading double-slash if one was found on entry. func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result } # func_relative_path SRCDIR DSTDIR # generates a relative path from SRCDIR to DSTDIR, with a trailing # slash if non-empty, suitable for immediately appending a filename # without needing to append a separator. # value returned in "$func_relative_path_result" func_relative_path () { func_relative_path_result= func_normal_abspath "$1" func_relative_path_tlibdir=$func_normal_abspath_result func_normal_abspath "$2" func_relative_path_tbindir=$func_normal_abspath_result # Ascend the tree starting from libdir while :; do # check if we have found a prefix of bindir case $func_relative_path_tbindir in $func_relative_path_tlibdir) # found an exact match func_relative_path_tcancelled= break ;; $func_relative_path_tlibdir*) # found a matching prefix func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir" func_relative_path_tcancelled=$func_stripname_result if test -z "$func_relative_path_result"; then func_relative_path_result=. fi break ;; *) func_dirname $func_relative_path_tlibdir func_relative_path_tlibdir=${func_dirname_result} if test "x$func_relative_path_tlibdir" = x ; then # Have to descend all the way to the root! func_relative_path_result=../$func_relative_path_result func_relative_path_tcancelled=$func_relative_path_tbindir break fi func_relative_path_result=../$func_relative_path_result ;; esac done # Now calculate path; take care to avoid doubling-up slashes. func_stripname '' '/' "$func_relative_path_result" func_relative_path_result=$func_stripname_result func_stripname '/' '/' "$func_relative_path_tcancelled" if test "x$func_stripname_result" != x ; then func_relative_path_result=${func_relative_path_result}/${func_stripname_result} fi # Normalisation. If bindir is libdir, return empty string, # else relative path ending with a slash; either way, target # file name can be directly appended. if test ! -z "$func_relative_path_result"; then func_stripname './' '' "$func_relative_path_result/" func_relative_path_result=$func_stripname_result fi } # The name of this program: func_dirname_and_basename "$progpath" progname=$func_basename_result # Make sure we have an absolute path for reexecution: case $progpath in [\\/]*|[A-Za-z]:\\*) ;; *[\\/]*) progdir=$func_dirname_result progdir=`cd "$progdir" && pwd` progpath="$progdir/$progname" ;; *) save_IFS="$IFS" IFS=${PATH_SEPARATOR-:} for progdir in $PATH; do IFS="$save_IFS" test -x "$progdir/$progname" && break done IFS="$save_IFS" test -n "$progdir" || progdir=`pwd` progpath="$progdir/$progname" ;; esac # Sed substitution that helps us do robust quoting. It backslashifies # metacharacters that are still active within double-quoted strings. Xsed="${SED}"' -e 1s/^X//' sed_quote_subst='s/\([`"$\\]\)/\\\1/g' # Same as above, but do not quote variable references. double_quote_subst='s/\(["`\\]\)/\\\1/g' # Sed substitution that turns a string into a regex matching for the # string literally. sed_make_literal_regex='s,[].[^$\\*\/],\\&,g' # Sed substitution that converts a w32 file name or path # which contains forward slashes, into one that contains # (escaped) backslashes. A very naive implementation. lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g' # Re-`\' parameter expansions in output of double_quote_subst that were # `\'-ed in input to the same. If an odd number of `\' preceded a '$' # in input to double_quote_subst, that '$' was protected from expansion. # Since each input `\' is now two `\'s, look for any number of runs of # four `\'s followed by two `\'s and then a '$'. `\' that '$'. bs='\\' bs2='\\\\' bs4='\\\\\\\\' dollar='\$' sed_double_backslash="\ s/$bs4/&\\ /g s/^$bs2$dollar/$bs&/ s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g s/\n//g" # Standard options: opt_dry_run=false opt_help=false opt_quiet=false opt_verbose=false opt_warning=: # func_echo arg... # Echo program name prefixed message, along with the current mode # name if it has been set yet. func_echo () { $ECHO "$progname: ${opt_mode+$opt_mode: }$*" } # func_verbose arg... # Echo program name prefixed message in verbose mode only. func_verbose () { $opt_verbose && func_echo ${1+"$@"} # A bug in bash halts the script if the last line of a function # fails when set -e is in force, so we need another command to # work around that: : } # func_echo_all arg... # Invoke $ECHO with all args, space-separated. func_echo_all () { $ECHO "$*" } # func_error arg... # Echo program name prefixed message to standard error. func_error () { $ECHO "$progname: ${opt_mode+$opt_mode: }"${1+"$@"} 1>&2 } # func_warning arg... # Echo program name prefixed warning message to standard error. func_warning () { $opt_warning && $ECHO "$progname: ${opt_mode+$opt_mode: }warning: "${1+"$@"} 1>&2 # bash bug again: : } # func_fatal_error arg... # Echo program name prefixed message to standard error, and exit. func_fatal_error () { func_error ${1+"$@"} exit $EXIT_FAILURE } # func_fatal_help arg... # Echo program name prefixed message to standard error, followed by # a help hint, and exit. func_fatal_help () { func_error ${1+"$@"} func_fatal_error "$help" } help="Try \`$progname --help' for more information." ## default # func_grep expression filename # Check whether EXPRESSION matches any line of FILENAME, without output. func_grep () { $GREP "$1" "$2" >/dev/null 2>&1 } # func_mkdir_p directory-path # Make sure the entire path to DIRECTORY-PATH is available. func_mkdir_p () { my_directory_path="$1" my_dir_list= if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then # Protect directory names starting with `-' case $my_directory_path in -*) my_directory_path="./$my_directory_path" ;; esac # While some portion of DIR does not yet exist... while test ! -d "$my_directory_path"; do # ...make a list in topmost first order. Use a colon delimited # list incase some portion of path contains whitespace. my_dir_list="$my_directory_path:$my_dir_list" # If the last portion added has no slash in it, the list is done case $my_directory_path in */*) ;; *) break ;; esac # ...otherwise throw away the child directory and loop my_directory_path=`$ECHO "$my_directory_path" | $SED -e "$dirname"` done my_dir_list=`$ECHO "$my_dir_list" | $SED 's,:*$,,'` save_mkdir_p_IFS="$IFS"; IFS=':' for my_dir in $my_dir_list; do IFS="$save_mkdir_p_IFS" # mkdir can fail with a `File exist' error if two processes # try to create one of the directories concurrently. Don't # stop in that case! $MKDIR "$my_dir" 2>/dev/null || : done IFS="$save_mkdir_p_IFS" # Bail out if we (or some other process) failed to create a directory. test -d "$my_directory_path" || \ func_fatal_error "Failed to create \`$1'" fi } # func_mktempdir [string] # Make a temporary directory that won't clash with other running # libtool processes, and avoids race conditions if possible. If # given, STRING is the basename for that directory. func_mktempdir () { my_template="${TMPDIR-/tmp}/${1-$progname}" if test "$opt_dry_run" = ":"; then # Return a directory name, but don't create it in dry-run mode my_tmpdir="${my_template}-$$" else # If mktemp works, use that first and foremost my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null` if test ! -d "$my_tmpdir"; then # Failing that, at least try and use $RANDOM to avoid a race my_tmpdir="${my_template}-${RANDOM-0}$$" save_mktempdir_umask=`umask` umask 0077 $MKDIR "$my_tmpdir" umask $save_mktempdir_umask fi # If we're not in dry-run mode, bomb out on failure test -d "$my_tmpdir" || \ func_fatal_error "cannot create temporary directory \`$my_tmpdir'" fi $ECHO "$my_tmpdir" } # func_quote_for_eval arg # Aesthetically quote ARG to be evaled later. # This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT # is double-quoted, suitable for a subsequent eval, whereas # FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters # which are still active within double quotes backslashified. func_quote_for_eval () { case $1 in *[\\\`\"\$]*) func_quote_for_eval_unquoted_result=`$ECHO "$1" | $SED "$sed_quote_subst"` ;; *) func_quote_for_eval_unquoted_result="$1" ;; esac case $func_quote_for_eval_unquoted_result in # Double-quote args containing shell metacharacters to delay # word splitting, command substitution and and variable # expansion for a subsequent eval. # Many Bourne shells cannot handle close brackets correctly # in scan sets, so we specify it separately. *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\"" ;; *) func_quote_for_eval_result="$func_quote_for_eval_unquoted_result" esac } # func_quote_for_expand arg # Aesthetically quote ARG to be evaled later; same as above, # but do not quote variable references. func_quote_for_expand () { case $1 in *[\\\`\"]*) my_arg=`$ECHO "$1" | $SED \ -e "$double_quote_subst" -e "$sed_double_backslash"` ;; *) my_arg="$1" ;; esac case $my_arg in # Double-quote args containing shell metacharacters to delay # word splitting and command substitution for a subsequent eval. # Many Bourne shells cannot handle close brackets correctly # in scan sets, so we specify it separately. *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"") my_arg="\"$my_arg\"" ;; esac func_quote_for_expand_result="$my_arg" } # func_show_eval cmd [fail_exp] # Unless opt_silent is true, then output CMD. Then, if opt_dryrun is # not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP # is given, then evaluate it. func_show_eval () { my_cmd="$1" my_fail_exp="${2-:}" ${opt_silent-false} || { func_quote_for_expand "$my_cmd" eval "func_echo $func_quote_for_expand_result" } if ${opt_dry_run-false}; then :; else eval "$my_cmd" my_status=$? if test "$my_status" -eq 0; then :; else eval "(exit $my_status); $my_fail_exp" fi fi } # func_show_eval_locale cmd [fail_exp] # Unless opt_silent is true, then output CMD. Then, if opt_dryrun is # not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP # is given, then evaluate it. Use the saved locale for evaluation. func_show_eval_locale () { my_cmd="$1" my_fail_exp="${2-:}" ${opt_silent-false} || { func_quote_for_expand "$my_cmd" eval "func_echo $func_quote_for_expand_result" } if ${opt_dry_run-false}; then :; else eval "$lt_user_locale $my_cmd" my_status=$? eval "$lt_safe_locale" if test "$my_status" -eq 0; then :; else eval "(exit $my_status); $my_fail_exp" fi fi } # func_tr_sh # Turn $1 into a string suitable for a shell variable name. # Result is stored in $func_tr_sh_result. All characters # not in the set a-zA-Z0-9_ are replaced with '_'. Further, # if $1 begins with a digit, a '_' is prepended as well. func_tr_sh () { case $1 in [0-9]* | *[!a-zA-Z0-9_]*) func_tr_sh_result=`$ECHO "$1" | $SED 's/^\([0-9]\)/_\1/; s/[^a-zA-Z0-9_]/_/g'` ;; * ) func_tr_sh_result=$1 ;; esac } # func_version # Echo version message to standard output and exit. func_version () { $opt_debug $SED -n '/(C)/!b go :more /\./!{ N s/\n# / / b more } :go /^# '$PROGRAM' (GNU /,/# warranty; / { s/^# // s/^# *$// s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/ p }' < "$progpath" exit $? } # func_usage # Echo short help message to standard output and exit. func_usage () { $opt_debug $SED -n '/^# Usage:/,/^# *.*--help/ { s/^# // s/^# *$// s/\$progname/'$progname'/ p }' < "$progpath" echo $ECHO "run \`$progname --help | more' for full usage" exit $? } # func_help [NOEXIT] # Echo long help message to standard output and exit, # unless 'noexit' is passed as argument. func_help () { $opt_debug $SED -n '/^# Usage:/,/# Report bugs to/ { :print s/^# // s/^# *$// s*\$progname*'$progname'* s*\$host*'"$host"'* s*\$SHELL*'"$SHELL"'* s*\$LTCC*'"$LTCC"'* s*\$LTCFLAGS*'"$LTCFLAGS"'* s*\$LD*'"$LD"'* s/\$with_gnu_ld/'"$with_gnu_ld"'/ s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/ s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/ p d } /^# .* home page:/b print /^# General help using/b print ' < "$progpath" ret=$? if test -z "$1"; then exit $ret fi } # func_missing_arg argname # Echo program name prefixed message to standard error and set global # exit_cmd. func_missing_arg () { $opt_debug func_error "missing argument for $1." exit_cmd=exit } # func_split_short_opt shortopt # Set func_split_short_opt_name and func_split_short_opt_arg shell # variables after splitting SHORTOPT after the 2nd character. func_split_short_opt () { my_sed_short_opt='1s/^\(..\).*$/\1/;q' my_sed_short_rest='1s/^..\(.*\)$/\1/;q' func_split_short_opt_name=`$ECHO "$1" | $SED "$my_sed_short_opt"` func_split_short_opt_arg=`$ECHO "$1" | $SED "$my_sed_short_rest"` } # func_split_short_opt may be replaced by extended shell implementation # func_split_long_opt longopt # Set func_split_long_opt_name and func_split_long_opt_arg shell # variables after splitting LONGOPT at the `=' sign. func_split_long_opt () { my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q' my_sed_long_arg='1s/^--[^=]*=//' func_split_long_opt_name=`$ECHO "$1" | $SED "$my_sed_long_opt"` func_split_long_opt_arg=`$ECHO "$1" | $SED "$my_sed_long_arg"` } # func_split_long_opt may be replaced by extended shell implementation exit_cmd=: magic="%%%MAGIC variable%%%" magic_exe="%%%MAGIC EXE variable%%%" # Global variables. nonopt= preserve_args= lo2o="s/\\.lo\$/.${objext}/" o2lo="s/\\.${objext}\$/.lo/" extracted_archives= extracted_serial=0 # If this variable is set in any of the actions, the command in it # will be execed at the end. This prevents here-documents from being # left over by shells. exec_cmd= # func_append var value # Append VALUE to the end of shell variable VAR. func_append () { eval "${1}=\$${1}\${2}" } # func_append may be replaced by extended shell implementation # func_append_quoted var value # Quote VALUE and append to the end of shell variable VAR, separated # by a space. func_append_quoted () { func_quote_for_eval "${2}" eval "${1}=\$${1}\\ \$func_quote_for_eval_result" } # func_append_quoted may be replaced by extended shell implementation # func_arith arithmetic-term... func_arith () { func_arith_result=`expr "${@}"` } # func_arith may be replaced by extended shell implementation # func_len string # STRING may not start with a hyphen. func_len () { func_len_result=`expr "${1}" : ".*" 2>/dev/null || echo $max_cmd_len` } # func_len may be replaced by extended shell implementation # func_lo2o object func_lo2o () { func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"` } # func_lo2o may be replaced by extended shell implementation # func_xform libobj-or-source func_xform () { func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'` } # func_xform may be replaced by extended shell implementation # func_fatal_configuration arg... # Echo program name prefixed message to standard error, followed by # a configuration failure hint, and exit. func_fatal_configuration () { func_error ${1+"$@"} func_error "See the $PACKAGE documentation for more information." func_fatal_error "Fatal configuration error." } # func_config # Display the configuration for all the tags in this script. func_config () { re_begincf='^# ### BEGIN LIBTOOL' re_endcf='^# ### END LIBTOOL' # Default configuration. $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath" # Now print the configurations for the tags. for tagname in $taglist; do $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath" done exit $? } # func_features # Display the features supported by this script. func_features () { echo "host: $host" if test "$build_libtool_libs" = yes; then echo "enable shared libraries" else echo "disable shared libraries" fi if test "$build_old_libs" = yes; then echo "enable static libraries" else echo "disable static libraries" fi exit $? } # func_enable_tag tagname # Verify that TAGNAME is valid, and either flag an error and exit, or # enable the TAGNAME tag. We also add TAGNAME to the global $taglist # variable here. func_enable_tag () { # Global variable: tagname="$1" re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$" re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$" sed_extractcf="/$re_begincf/,/$re_endcf/p" # Validate tagname. case $tagname in *[!-_A-Za-z0-9,/]*) func_fatal_error "invalid tag name: $tagname" ;; esac # Don't test for the "default" C tag, as we know it's # there but not specially marked. case $tagname in CC) ;; *) if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then taglist="$taglist $tagname" # Evaluate the configuration. Be careful to quote the path # and the sed script, to avoid splitting on whitespace, but # also don't use non-portable quotes within backquotes within # quotes we have to do it in 2 steps: extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"` eval "$extractedcf" else func_error "ignoring unknown tag $tagname" fi ;; esac } # func_check_version_match # Ensure that we are using m4 macros, and libtool script from the same # release of libtool. func_check_version_match () { if test "$package_revision" != "$macro_revision"; then if test "$VERSION" != "$macro_version"; then if test -z "$macro_version"; then cat >&2 <<_LT_EOF $progname: Version mismatch error. This is $PACKAGE $VERSION, but the $progname: definition of this LT_INIT comes from an older release. $progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION $progname: and run autoconf again. _LT_EOF else cat >&2 <<_LT_EOF $progname: Version mismatch error. This is $PACKAGE $VERSION, but the $progname: definition of this LT_INIT comes from $PACKAGE $macro_version. $progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION $progname: and run autoconf again. _LT_EOF fi else cat >&2 <<_LT_EOF $progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision, $progname: but the definition of this LT_INIT comes from revision $macro_revision. $progname: You should recreate aclocal.m4 with macros from revision $package_revision $progname: of $PACKAGE $VERSION and run autoconf again. _LT_EOF fi exit $EXIT_MISMATCH fi } # Shorthand for --mode=foo, only valid as the first argument case $1 in clean|clea|cle|cl) shift; set dummy --mode clean ${1+"$@"}; shift ;; compile|compil|compi|comp|com|co|c) shift; set dummy --mode compile ${1+"$@"}; shift ;; execute|execut|execu|exec|exe|ex|e) shift; set dummy --mode execute ${1+"$@"}; shift ;; finish|finis|fini|fin|fi|f) shift; set dummy --mode finish ${1+"$@"}; shift ;; install|instal|insta|inst|ins|in|i) shift; set dummy --mode install ${1+"$@"}; shift ;; link|lin|li|l) shift; set dummy --mode link ${1+"$@"}; shift ;; uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u) shift; set dummy --mode uninstall ${1+"$@"}; shift ;; esac # Option defaults: opt_debug=: opt_dry_run=false opt_config=false opt_preserve_dup_deps=false opt_features=false opt_finish=false opt_help=false opt_help_all=false opt_silent=: opt_warning=: opt_verbose=: opt_silent=false opt_verbose=false # Parse options once, thoroughly. This comes as soon as possible in the # script to make things like `--version' happen as quickly as we can. { # this just eases exit handling while test $# -gt 0; do opt="$1" shift case $opt in --debug|-x) opt_debug='set -x' func_echo "enabling shell trace mode" $opt_debug ;; --dry-run|--dryrun|-n) opt_dry_run=: ;; --config) opt_config=: func_config ;; --dlopen|-dlopen) optarg="$1" opt_dlopen="${opt_dlopen+$opt_dlopen }$optarg" shift ;; --preserve-dup-deps) opt_preserve_dup_deps=: ;; --features) opt_features=: func_features ;; --finish) opt_finish=: set dummy --mode finish ${1+"$@"}; shift ;; --help) opt_help=: ;; --help-all) opt_help_all=: opt_help=': help-all' ;; --mode) test $# = 0 && func_missing_arg $opt && break optarg="$1" opt_mode="$optarg" case $optarg in # Valid mode arguments: clean|compile|execute|finish|install|link|relink|uninstall) ;; # Catch anything else as an error *) func_error "invalid argument for $opt" exit_cmd=exit break ;; esac shift ;; --no-silent|--no-quiet) opt_silent=false func_append preserve_args " $opt" ;; --no-warning|--no-warn) opt_warning=false func_append preserve_args " $opt" ;; --no-verbose) opt_verbose=false func_append preserve_args " $opt" ;; --silent|--quiet) opt_silent=: func_append preserve_args " $opt" opt_verbose=false ;; --verbose|-v) opt_verbose=: func_append preserve_args " $opt" opt_silent=false ;; --tag) test $# = 0 && func_missing_arg $opt && break optarg="$1" opt_tag="$optarg" func_append preserve_args " $opt $optarg" func_enable_tag "$optarg" shift ;; -\?|-h) func_usage ;; --help) func_help ;; --version) func_version ;; # Separate optargs to long options: --*=*) func_split_long_opt "$opt" set dummy "$func_split_long_opt_name" "$func_split_long_opt_arg" ${1+"$@"} shift ;; # Separate non-argument short options: -\?*|-h*|-n*|-v*) func_split_short_opt "$opt" set dummy "$func_split_short_opt_name" "-$func_split_short_opt_arg" ${1+"$@"} shift ;; --) break ;; -*) func_fatal_help "unrecognized option \`$opt'" ;; *) set dummy "$opt" ${1+"$@"}; shift; break ;; esac done # Validate options: # save first non-option argument if test "$#" -gt 0; then nonopt="$opt" shift fi # preserve --debug test "$opt_debug" = : || func_append preserve_args " --debug" case $host in *cygwin* | *mingw* | *pw32* | *cegcc*) # don't eliminate duplications in $postdeps and $predeps opt_duplicate_compiler_generated_deps=: ;; *) opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps ;; esac $opt_help || { # Sanity checks first: func_check_version_match if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then func_fatal_configuration "not configured to build any kind of library" fi # Darwin sucks eval std_shrext=\"$shrext_cmds\" # Only execute mode is allowed to have -dlopen flags. if test -n "$opt_dlopen" && test "$opt_mode" != execute; then func_error "unrecognized option \`-dlopen'" $ECHO "$help" 1>&2 exit $EXIT_FAILURE fi # Change the help message to a mode-specific one. generic_help="$help" help="Try \`$progname --help --mode=$opt_mode' for more information." } # Bail if the options were screwed $exit_cmd $EXIT_FAILURE } ## ----------- ## ## Main. ## ## ----------- ## # func_lalib_p file # True iff FILE is a libtool `.la' library or `.lo' object file. # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_lalib_p () { test -f "$1" && $SED -e 4q "$1" 2>/dev/null \ | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1 } # func_lalib_unsafe_p file # True iff FILE is a libtool `.la' library or `.lo' object file. # This function implements the same check as func_lalib_p without # resorting to external programs. To this end, it redirects stdin and # closes it afterwards, without saving the original file descriptor. # As a safety measure, use it only where a negative result would be # fatal anyway. Works if `file' does not exist. func_lalib_unsafe_p () { lalib_p=no if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then for lalib_p_l in 1 2 3 4 do read lalib_p_line case "$lalib_p_line" in \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;; esac done exec 0<&5 5<&- fi test "$lalib_p" = yes } # func_ltwrapper_script_p file # True iff FILE is a libtool wrapper script # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_ltwrapper_script_p () { func_lalib_p "$1" } # func_ltwrapper_executable_p file # True iff FILE is a libtool wrapper executable # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_ltwrapper_executable_p () { func_ltwrapper_exec_suffix= case $1 in *.exe) ;; *) func_ltwrapper_exec_suffix=.exe ;; esac $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1 } # func_ltwrapper_scriptname file # Assumes file is an ltwrapper_executable # uses $file to determine the appropriate filename for a # temporary ltwrapper_script. func_ltwrapper_scriptname () { func_dirname_and_basename "$1" "" "." func_stripname '' '.exe' "$func_basename_result" func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper" } # func_ltwrapper_p file # True iff FILE is a libtool wrapper script or wrapper executable # This function is only a basic sanity check; it will hardly flush out # determined imposters. func_ltwrapper_p () { func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1" } # func_execute_cmds commands fail_cmd # Execute tilde-delimited COMMANDS. # If FAIL_CMD is given, eval that upon failure. # FAIL_CMD may read-access the current command in variable CMD! func_execute_cmds () { $opt_debug save_ifs=$IFS; IFS='~' for cmd in $1; do IFS=$save_ifs eval cmd=\"$cmd\" func_show_eval "$cmd" "${2-:}" done IFS=$save_ifs } # func_source file # Source FILE, adding directory component if necessary. # Note that it is not necessary on cygwin/mingw to append a dot to # FILE even if both FILE and FILE.exe exist: automatic-append-.exe # behavior happens only for exec(3), not for open(2)! Also, sourcing # `FILE.' does not work on cygwin managed mounts. func_source () { $opt_debug case $1 in */* | *\\*) . "$1" ;; *) . "./$1" ;; esac } # func_resolve_sysroot PATH # Replace a leading = in PATH with a sysroot. Store the result into # func_resolve_sysroot_result func_resolve_sysroot () { func_resolve_sysroot_result=$1 case $func_resolve_sysroot_result in =*) func_stripname '=' '' "$func_resolve_sysroot_result" func_resolve_sysroot_result=$lt_sysroot$func_stripname_result ;; esac } # func_replace_sysroot PATH # If PATH begins with the sysroot, replace it with = and # store the result into func_replace_sysroot_result. func_replace_sysroot () { case "$lt_sysroot:$1" in ?*:"$lt_sysroot"*) func_stripname "$lt_sysroot" '' "$1" func_replace_sysroot_result="=$func_stripname_result" ;; *) # Including no sysroot. func_replace_sysroot_result=$1 ;; esac } # func_infer_tag arg # Infer tagged configuration to use if any are available and # if one wasn't chosen via the "--tag" command line option. # Only attempt this if the compiler in the base compile # command doesn't match the default compiler. # arg is usually of the form 'gcc ...' func_infer_tag () { $opt_debug if test -n "$available_tags" && test -z "$tagname"; then CC_quoted= for arg in $CC; do func_append_quoted CC_quoted "$arg" done CC_expanded=`func_echo_all $CC` CC_quoted_expanded=`func_echo_all $CC_quoted` case $@ in # Blanks in the command may have been stripped by the calling shell, # but not from the CC environment variable when configure was run. " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;; # Blanks at the start of $base_compile will cause this to fail # if we don't check for them as well. *) for z in $available_tags; do if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then # Evaluate the configuration. eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`" CC_quoted= for arg in $CC; do # Double-quote args containing other shell metacharacters. func_append_quoted CC_quoted "$arg" done CC_expanded=`func_echo_all $CC` CC_quoted_expanded=`func_echo_all $CC_quoted` case "$@ " in " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \ " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) # The compiler in the base compile command matches # the one in the tagged configuration. # Assume this is the tagged configuration we want. tagname=$z break ;; esac fi done # If $tagname still isn't set, then no tagged configuration # was found and let the user know that the "--tag" command # line option must be used. if test -z "$tagname"; then func_echo "unable to infer tagged configuration" func_fatal_error "specify a tag with \`--tag'" # else # func_verbose "using $tagname tagged configuration" fi ;; esac fi } # func_write_libtool_object output_name pic_name nonpic_name # Create a libtool object file (analogous to a ".la" file), # but don't create it if we're doing a dry run. func_write_libtool_object () { write_libobj=${1} if test "$build_libtool_libs" = yes; then write_lobj=\'${2}\' else write_lobj=none fi if test "$build_old_libs" = yes; then write_oldobj=\'${3}\' else write_oldobj=none fi $opt_dry_run || { cat >${write_libobj}T </dev/null` if test "$?" -eq 0 && test -n "${func_convert_core_file_wine_to_w32_tmp}"; then func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" | $SED -e "$lt_sed_naive_backslashify"` else func_convert_core_file_wine_to_w32_result= fi fi } # end: func_convert_core_file_wine_to_w32 # func_convert_core_path_wine_to_w32 ARG # Helper function used by path conversion functions when $build is *nix, and # $host is mingw, cygwin, or some other w32 environment. Relies on a correctly # configured wine environment available, with the winepath program in $build's # $PATH. Assumes ARG has no leading or trailing path separator characters. # # ARG is path to be converted from $build format to win32. # Result is available in $func_convert_core_path_wine_to_w32_result. # Unconvertible file (directory) names in ARG are skipped; if no directory names # are convertible, then the result may be empty. func_convert_core_path_wine_to_w32 () { $opt_debug # unfortunately, winepath doesn't convert paths, only file names func_convert_core_path_wine_to_w32_result="" if test -n "$1"; then oldIFS=$IFS IFS=: for func_convert_core_path_wine_to_w32_f in $1; do IFS=$oldIFS func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f" if test -n "$func_convert_core_file_wine_to_w32_result" ; then if test -z "$func_convert_core_path_wine_to_w32_result"; then func_convert_core_path_wine_to_w32_result="$func_convert_core_file_wine_to_w32_result" else func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result" fi fi done IFS=$oldIFS fi } # end: func_convert_core_path_wine_to_w32 # func_cygpath ARGS... # Wrapper around calling the cygpath program via LT_CYGPATH. This is used when # when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2) # $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or # (2), returns the Cygwin file name or path in func_cygpath_result (input # file name or path is assumed to be in w32 format, as previously converted # from $build's *nix or MSYS format). In case (3), returns the w32 file name # or path in func_cygpath_result (input file name or path is assumed to be in # Cygwin format). Returns an empty string on error. # # ARGS are passed to cygpath, with the last one being the file name or path to # be converted. # # Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH # environment variable; do not put it in $PATH. func_cygpath () { $opt_debug if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null` if test "$?" -ne 0; then # on failure, ensure result is empty func_cygpath_result= fi else func_cygpath_result= func_error "LT_CYGPATH is empty or specifies non-existent file: \`$LT_CYGPATH'" fi } #end: func_cygpath # func_convert_core_msys_to_w32 ARG # Convert file name or path ARG from MSYS format to w32 format. Return # result in func_convert_core_msys_to_w32_result. func_convert_core_msys_to_w32 () { $opt_debug # awkward: cmd appends spaces to result func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null | $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"` } #end: func_convert_core_msys_to_w32 # func_convert_file_check ARG1 ARG2 # Verify that ARG1 (a file name in $build format) was converted to $host # format in ARG2. Otherwise, emit an error message, but continue (resetting # func_to_host_file_result to ARG1). func_convert_file_check () { $opt_debug if test -z "$2" && test -n "$1" ; then func_error "Could not determine host file name corresponding to" func_error " \`$1'" func_error "Continuing, but uninstalled executables may not work." # Fallback: func_to_host_file_result="$1" fi } # end func_convert_file_check # func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH # Verify that FROM_PATH (a path in $build format) was converted to $host # format in TO_PATH. Otherwise, emit an error message, but continue, resetting # func_to_host_file_result to a simplistic fallback value (see below). func_convert_path_check () { $opt_debug if test -z "$4" && test -n "$3"; then func_error "Could not determine the host path corresponding to" func_error " \`$3'" func_error "Continuing, but uninstalled executables may not work." # Fallback. This is a deliberately simplistic "conversion" and # should not be "improved". See libtool.info. if test "x$1" != "x$2"; then lt_replace_pathsep_chars="s|$1|$2|g" func_to_host_path_result=`echo "$3" | $SED -e "$lt_replace_pathsep_chars"` else func_to_host_path_result="$3" fi fi } # end func_convert_path_check # func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG # Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT # and appending REPL if ORIG matches BACKPAT. func_convert_path_front_back_pathsep () { $opt_debug case $4 in $1 ) func_to_host_path_result="$3$func_to_host_path_result" ;; esac case $4 in $2 ) func_append func_to_host_path_result "$3" ;; esac } # end func_convert_path_front_back_pathsep ################################################## # $build to $host FILE NAME CONVERSION FUNCTIONS # ################################################## # invoked via `$to_host_file_cmd ARG' # # In each case, ARG is the path to be converted from $build to $host format. # Result will be available in $func_to_host_file_result. # func_to_host_file ARG # Converts the file name ARG from $build format to $host format. Return result # in func_to_host_file_result. func_to_host_file () { $opt_debug $to_host_file_cmd "$1" } # end func_to_host_file # func_to_tool_file ARG LAZY # converts the file name ARG from $build format to toolchain format. Return # result in func_to_tool_file_result. If the conversion in use is listed # in (the comma separated) LAZY, no conversion takes place. func_to_tool_file () { $opt_debug case ,$2, in *,"$to_tool_file_cmd",*) func_to_tool_file_result=$1 ;; *) $to_tool_file_cmd "$1" func_to_tool_file_result=$func_to_host_file_result ;; esac } # end func_to_tool_file # func_convert_file_noop ARG # Copy ARG to func_to_host_file_result. func_convert_file_noop () { func_to_host_file_result="$1" } # end func_convert_file_noop # func_convert_file_msys_to_w32 ARG # Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic # conversion to w32 is not available inside the cwrapper. Returns result in # func_to_host_file_result. func_convert_file_msys_to_w32 () { $opt_debug func_to_host_file_result="$1" if test -n "$1"; then func_convert_core_msys_to_w32 "$1" func_to_host_file_result="$func_convert_core_msys_to_w32_result" fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_msys_to_w32 # func_convert_file_cygwin_to_w32 ARG # Convert file name ARG from Cygwin to w32 format. Returns result in # func_to_host_file_result. func_convert_file_cygwin_to_w32 () { $opt_debug func_to_host_file_result="$1" if test -n "$1"; then # because $build is cygwin, we call "the" cygpath in $PATH; no need to use # LT_CYGPATH in this case. func_to_host_file_result=`cygpath -m "$1"` fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_cygwin_to_w32 # func_convert_file_nix_to_w32 ARG # Convert file name ARG from *nix to w32 format. Requires a wine environment # and a working winepath. Returns result in func_to_host_file_result. func_convert_file_nix_to_w32 () { $opt_debug func_to_host_file_result="$1" if test -n "$1"; then func_convert_core_file_wine_to_w32 "$1" func_to_host_file_result="$func_convert_core_file_wine_to_w32_result" fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_nix_to_w32 # func_convert_file_msys_to_cygwin ARG # Convert file name ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. # Returns result in func_to_host_file_result. func_convert_file_msys_to_cygwin () { $opt_debug func_to_host_file_result="$1" if test -n "$1"; then func_convert_core_msys_to_w32 "$1" func_cygpath -u "$func_convert_core_msys_to_w32_result" func_to_host_file_result="$func_cygpath_result" fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_msys_to_cygwin # func_convert_file_nix_to_cygwin ARG # Convert file name ARG from *nix to Cygwin format. Requires Cygwin installed # in a wine environment, working winepath, and LT_CYGPATH set. Returns result # in func_to_host_file_result. func_convert_file_nix_to_cygwin () { $opt_debug func_to_host_file_result="$1" if test -n "$1"; then # convert from *nix to w32, then use cygpath to convert from w32 to cygwin. func_convert_core_file_wine_to_w32 "$1" func_cygpath -u "$func_convert_core_file_wine_to_w32_result" func_to_host_file_result="$func_cygpath_result" fi func_convert_file_check "$1" "$func_to_host_file_result" } # end func_convert_file_nix_to_cygwin ############################################# # $build to $host PATH CONVERSION FUNCTIONS # ############################################# # invoked via `$to_host_path_cmd ARG' # # In each case, ARG is the path to be converted from $build to $host format. # The result will be available in $func_to_host_path_result. # # Path separators are also converted from $build format to $host format. If # ARG begins or ends with a path separator character, it is preserved (but # converted to $host format) on output. # # All path conversion functions are named using the following convention: # file name conversion function : func_convert_file_X_to_Y () # path conversion function : func_convert_path_X_to_Y () # where, for any given $build/$host combination the 'X_to_Y' value is the # same. If conversion functions are added for new $build/$host combinations, # the two new functions must follow this pattern, or func_init_to_host_path_cmd # will break. # func_init_to_host_path_cmd # Ensures that function "pointer" variable $to_host_path_cmd is set to the # appropriate value, based on the value of $to_host_file_cmd. to_host_path_cmd= func_init_to_host_path_cmd () { $opt_debug if test -z "$to_host_path_cmd"; then func_stripname 'func_convert_file_' '' "$to_host_file_cmd" to_host_path_cmd="func_convert_path_${func_stripname_result}" fi } # func_to_host_path ARG # Converts the path ARG from $build format to $host format. Return result # in func_to_host_path_result. func_to_host_path () { $opt_debug func_init_to_host_path_cmd $to_host_path_cmd "$1" } # end func_to_host_path # func_convert_path_noop ARG # Copy ARG to func_to_host_path_result. func_convert_path_noop () { func_to_host_path_result="$1" } # end func_convert_path_noop # func_convert_path_msys_to_w32 ARG # Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic # conversion to w32 is not available inside the cwrapper. Returns result in # func_to_host_path_result. func_convert_path_msys_to_w32 () { $opt_debug func_to_host_path_result="$1" if test -n "$1"; then # Remove leading and trailing path separator characters from ARG. MSYS # behavior is inconsistent here; cygpath turns them into '.;' and ';.'; # and winepath ignores them completely. func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" func_to_host_path_result="$func_convert_core_msys_to_w32_result" func_convert_path_check : ";" \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" fi } # end func_convert_path_msys_to_w32 # func_convert_path_cygwin_to_w32 ARG # Convert path ARG from Cygwin to w32 format. Returns result in # func_to_host_file_result. func_convert_path_cygwin_to_w32 () { $opt_debug func_to_host_path_result="$1" if test -n "$1"; then # See func_convert_path_msys_to_w32: func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"` func_convert_path_check : ";" \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" fi } # end func_convert_path_cygwin_to_w32 # func_convert_path_nix_to_w32 ARG # Convert path ARG from *nix to w32 format. Requires a wine environment and # a working winepath. Returns result in func_to_host_file_result. func_convert_path_nix_to_w32 () { $opt_debug func_to_host_path_result="$1" if test -n "$1"; then # See func_convert_path_msys_to_w32: func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" func_to_host_path_result="$func_convert_core_path_wine_to_w32_result" func_convert_path_check : ";" \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" ";" "$1" fi } # end func_convert_path_nix_to_w32 # func_convert_path_msys_to_cygwin ARG # Convert path ARG from MSYS to Cygwin format. Requires LT_CYGPATH set. # Returns result in func_to_host_file_result. func_convert_path_msys_to_cygwin () { $opt_debug func_to_host_path_result="$1" if test -n "$1"; then # See func_convert_path_msys_to_w32: func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_msys_to_w32 "$func_to_host_path_tmp1" func_cygpath -u -p "$func_convert_core_msys_to_w32_result" func_to_host_path_result="$func_cygpath_result" func_convert_path_check : : \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" : "$1" fi } # end func_convert_path_msys_to_cygwin # func_convert_path_nix_to_cygwin ARG # Convert path ARG from *nix to Cygwin format. Requires Cygwin installed in a # a wine environment, working winepath, and LT_CYGPATH set. Returns result in # func_to_host_file_result. func_convert_path_nix_to_cygwin () { $opt_debug func_to_host_path_result="$1" if test -n "$1"; then # Remove leading and trailing path separator characters from # ARG. msys behavior is inconsistent here, cygpath turns them # into '.;' and ';.', and winepath ignores them completely. func_stripname : : "$1" func_to_host_path_tmp1=$func_stripname_result func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1" func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result" func_to_host_path_result="$func_cygpath_result" func_convert_path_check : : \ "$func_to_host_path_tmp1" "$func_to_host_path_result" func_convert_path_front_back_pathsep ":*" "*:" : "$1" fi } # end func_convert_path_nix_to_cygwin # func_mode_compile arg... func_mode_compile () { $opt_debug # Get the compilation command and the source file. base_compile= srcfile="$nonopt" # always keep a non-empty value in "srcfile" suppress_opt=yes suppress_output= arg_mode=normal libobj= later= pie_flag= for arg do case $arg_mode in arg ) # do not "continue". Instead, add this to base_compile lastarg="$arg" arg_mode=normal ;; target ) libobj="$arg" arg_mode=normal continue ;; normal ) # Accept any command-line options. case $arg in -o) test -n "$libobj" && \ func_fatal_error "you cannot specify \`-o' more than once" arg_mode=target continue ;; -pie | -fpie | -fPIE) func_append pie_flag " $arg" continue ;; -shared | -static | -prefer-pic | -prefer-non-pic) func_append later " $arg" continue ;; -no-suppress) suppress_opt=no continue ;; -Xcompiler) arg_mode=arg # the next one goes into the "base_compile" arg list continue # The current "srcfile" will either be retained or ;; # replaced later. I would guess that would be a bug. -Wc,*) func_stripname '-Wc,' '' "$arg" args=$func_stripname_result lastarg= save_ifs="$IFS"; IFS=',' for arg in $args; do IFS="$save_ifs" func_append_quoted lastarg "$arg" done IFS="$save_ifs" func_stripname ' ' '' "$lastarg" lastarg=$func_stripname_result # Add the arguments to base_compile. func_append base_compile " $lastarg" continue ;; *) # Accept the current argument as the source file. # The previous "srcfile" becomes the current argument. # lastarg="$srcfile" srcfile="$arg" ;; esac # case $arg ;; esac # case $arg_mode # Aesthetically quote the previous argument. func_append_quoted base_compile "$lastarg" done # for arg case $arg_mode in arg) func_fatal_error "you must specify an argument for -Xcompile" ;; target) func_fatal_error "you must specify a target with \`-o'" ;; *) # Get the name of the library object. test -z "$libobj" && { func_basename "$srcfile" libobj="$func_basename_result" } ;; esac # Recognize several different file suffixes. # If the user specifies -o file.o, it is replaced with file.lo case $libobj in *.[cCFSifmso] | \ *.ada | *.adb | *.ads | *.asm | \ *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \ *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup) func_xform "$libobj" libobj=$func_xform_result ;; esac case $libobj in *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;; *) func_fatal_error "cannot determine name of library object from \`$libobj'" ;; esac func_infer_tag $base_compile for arg in $later; do case $arg in -shared) test "$build_libtool_libs" != yes && \ func_fatal_configuration "can not build a shared library" build_old_libs=no continue ;; -static) build_libtool_libs=no build_old_libs=yes continue ;; -prefer-pic) pic_mode=yes continue ;; -prefer-non-pic) pic_mode=no continue ;; esac done func_quote_for_eval "$libobj" test "X$libobj" != "X$func_quote_for_eval_result" \ && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \ && func_warning "libobj name \`$libobj' may not contain shell special characters." func_dirname_and_basename "$obj" "/" "" objname="$func_basename_result" xdir="$func_dirname_result" lobj=${xdir}$objdir/$objname test -z "$base_compile" && \ func_fatal_help "you must specify a compilation command" # Delete any leftover library objects. if test "$build_old_libs" = yes; then removelist="$obj $lobj $libobj ${libobj}T" else removelist="$lobj $libobj ${libobj}T" fi # On Cygwin there's no "real" PIC flag so we must build both object types case $host_os in cygwin* | mingw* | pw32* | os2* | cegcc*) pic_mode=default ;; esac if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then # non-PIC code in shared libraries is not supported pic_mode=default fi # Calculate the filename of the output object if compiler does # not support -o with -c if test "$compiler_c_o" = no; then output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.${objext} lockfile="$output_obj.lock" else output_obj= need_locks=no lockfile= fi # Lock this critical section if it is needed # We use this script file to make the link, it avoids creating a new file if test "$need_locks" = yes; then until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do func_echo "Waiting for $lockfile to be removed" sleep 2 done elif test "$need_locks" = warn; then if test -f "$lockfile"; then $ECHO "\ *** ERROR, $lockfile exists and contains: `cat $lockfile 2>/dev/null` This indicates that another process is trying to use the same temporary object file, and libtool could not work around it because your compiler does not support \`-c' and \`-o' together. If you repeat this compilation, it may succeed, by chance, but you had better avoid parallel builds (make -j) in this platform, or get a better compiler." $opt_dry_run || $RM $removelist exit $EXIT_FAILURE fi func_append removelist " $output_obj" $ECHO "$srcfile" > "$lockfile" fi $opt_dry_run || $RM $removelist func_append removelist " $lockfile" trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15 func_to_tool_file "$srcfile" func_convert_file_msys_to_w32 srcfile=$func_to_tool_file_result func_quote_for_eval "$srcfile" qsrcfile=$func_quote_for_eval_result # Only build a PIC object if we are building libtool libraries. if test "$build_libtool_libs" = yes; then # Without this assignment, base_compile gets emptied. fbsd_hideous_sh_bug=$base_compile if test "$pic_mode" != no; then command="$base_compile $qsrcfile $pic_flag" else # Don't build PIC code command="$base_compile $qsrcfile" fi func_mkdir_p "$xdir$objdir" if test -z "$output_obj"; then # Place PIC objects in $objdir func_append command " -o $lobj" fi func_show_eval_locale "$command" \ 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE' if test "$need_locks" = warn && test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then $ECHO "\ *** ERROR, $lockfile contains: `cat $lockfile 2>/dev/null` but it should contain: $srcfile This indicates that another process is trying to use the same temporary object file, and libtool could not work around it because your compiler does not support \`-c' and \`-o' together. If you repeat this compilation, it may succeed, by chance, but you had better avoid parallel builds (make -j) in this platform, or get a better compiler." $opt_dry_run || $RM $removelist exit $EXIT_FAILURE fi # Just move the object if needed, then go on to compile the next one if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then func_show_eval '$MV "$output_obj" "$lobj"' \ 'error=$?; $opt_dry_run || $RM $removelist; exit $error' fi # Allow error messages only from the first compilation. if test "$suppress_opt" = yes; then suppress_output=' >/dev/null 2>&1' fi fi # Only build a position-dependent object if we build old libraries. if test "$build_old_libs" = yes; then if test "$pic_mode" != yes; then # Don't build PIC code command="$base_compile $qsrcfile$pie_flag" else command="$base_compile $qsrcfile $pic_flag" fi if test "$compiler_c_o" = yes; then func_append command " -o $obj" fi # Suppress compiler output if we already did a PIC compilation. func_append command "$suppress_output" func_show_eval_locale "$command" \ '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' if test "$need_locks" = warn && test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then $ECHO "\ *** ERROR, $lockfile contains: `cat $lockfile 2>/dev/null` but it should contain: $srcfile This indicates that another process is trying to use the same temporary object file, and libtool could not work around it because your compiler does not support \`-c' and \`-o' together. If you repeat this compilation, it may succeed, by chance, but you had better avoid parallel builds (make -j) in this platform, or get a better compiler." $opt_dry_run || $RM $removelist exit $EXIT_FAILURE fi # Just move the object if needed if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then func_show_eval '$MV "$output_obj" "$obj"' \ 'error=$?; $opt_dry_run || $RM $removelist; exit $error' fi fi $opt_dry_run || { func_write_libtool_object "$libobj" "$objdir/$objname" "$objname" # Unlock the critical section if it was locked if test "$need_locks" != no; then removelist=$lockfile $RM "$lockfile" fi } exit $EXIT_SUCCESS } $opt_help || { test "$opt_mode" = compile && func_mode_compile ${1+"$@"} } func_mode_help () { # We need to display help for each of the modes. case $opt_mode in "") # Generic help is extracted from the usage comments # at the start of this file. func_help ;; clean) $ECHO \ "Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE... Remove files from the build directory. RM is the name of the program to use to delete files associated with each FILE (typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed to RM. If FILE is a libtool library, object or program, all the files associated with it are deleted. Otherwise, only FILE itself is deleted using RM." ;; compile) $ECHO \ "Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE Compile a source file into a libtool library object. This mode accepts the following additional options: -o OUTPUT-FILE set the output file name to OUTPUT-FILE -no-suppress do not suppress compiler output for multiple passes -prefer-pic try to build PIC objects only -prefer-non-pic try to build non-PIC objects only -shared do not build a \`.o' file suitable for static linking -static only build a \`.o' file suitable for static linking -Wc,FLAG pass FLAG directly to the compiler COMPILE-COMMAND is a command to be used in creating a \`standard' object file from the given SOURCEFILE. The output file name is determined by removing the directory component from SOURCEFILE, then substituting the C source code suffix \`.c' with the library object suffix, \`.lo'." ;; execute) $ECHO \ "Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]... Automatically set library path, then run a program. This mode accepts the following additional options: -dlopen FILE add the directory containing FILE to the library path This mode sets the library path environment variable according to \`-dlopen' flags. If any of the ARGS are libtool executable wrappers, then they are translated into their corresponding uninstalled binary, and any of their required library directories are added to the library path. Then, COMMAND is executed, with ARGS as arguments." ;; finish) $ECHO \ "Usage: $progname [OPTION]... --mode=finish [LIBDIR]... Complete the installation of libtool libraries. Each LIBDIR is a directory that contains libtool libraries. The commands that this mode executes may require superuser privileges. Use the \`--dry-run' option if you just want to see what would be executed." ;; install) $ECHO \ "Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND... Install executables or libraries. INSTALL-COMMAND is the installation command. The first component should be either the \`install' or \`cp' program. The following components of INSTALL-COMMAND are treated specially: -inst-prefix-dir PREFIX-DIR Use PREFIX-DIR as a staging area for installation The rest of the components are interpreted as arguments to that command (only BSD-compatible install options are recognized)." ;; link) $ECHO \ "Usage: $progname [OPTION]... --mode=link LINK-COMMAND... Link object files or libraries together to form another library, or to create an executable program. LINK-COMMAND is a command using the C compiler that you would use to create a program from several object files. The following components of LINK-COMMAND are treated specially: -all-static do not do any dynamic linking at all -avoid-version do not add a version suffix if possible -bindir BINDIR specify path to binaries directory (for systems where libraries must be found in the PATH setting at runtime) -dlopen FILE \`-dlpreopen' FILE if it cannot be dlopened at runtime -dlpreopen FILE link in FILE and add its symbols to lt_preloaded_symbols -export-dynamic allow symbols from OUTPUT-FILE to be resolved with dlsym(3) -export-symbols SYMFILE try to export only the symbols listed in SYMFILE -export-symbols-regex REGEX try to export only the symbols matching REGEX -LLIBDIR search LIBDIR for required installed libraries -lNAME OUTPUT-FILE requires the installed library libNAME -module build a library that can dlopened -no-fast-install disable the fast-install mode -no-install link a not-installable executable -no-undefined declare that a library does not refer to external symbols -o OUTPUT-FILE create OUTPUT-FILE from the specified objects -objectlist FILE Use a list of object files found in FILE to specify objects -precious-files-regex REGEX don't remove output files matching REGEX -release RELEASE specify package release information -rpath LIBDIR the created library will eventually be installed in LIBDIR -R[ ]LIBDIR add LIBDIR to the runtime path of programs and libraries -shared only do dynamic linking of libtool libraries -shrext SUFFIX override the standard shared library file extension -static do not do any dynamic linking of uninstalled libtool libraries -static-libtool-libs do not do any dynamic linking of libtool libraries -version-info CURRENT[:REVISION[:AGE]] specify library version info [each variable defaults to 0] -weak LIBNAME declare that the target provides the LIBNAME interface -Wc,FLAG -Xcompiler FLAG pass linker-specific FLAG directly to the compiler -Wl,FLAG -Xlinker FLAG pass linker-specific FLAG directly to the linker -XCClinker FLAG pass link-specific FLAG to the compiler driver (CC) All other options (arguments beginning with \`-') are ignored. Every other argument is treated as a filename. Files ending in \`.la' are treated as uninstalled libtool libraries, other files are standard or library object files. If the OUTPUT-FILE ends in \`.la', then a libtool library is created, only library objects (\`.lo' files) may be specified, and \`-rpath' is required, except when creating a convenience library. If OUTPUT-FILE ends in \`.a' or \`.lib', then a standard library is created using \`ar' and \`ranlib', or on Windows using \`lib'. If OUTPUT-FILE ends in \`.lo' or \`.${objext}', then a reloadable object file is created, otherwise an executable program is created." ;; uninstall) $ECHO \ "Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE... Remove libraries from an installation directory. RM is the name of the program to use to delete files associated with each FILE (typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed to RM. If FILE is a libtool library, all the files associated with it are deleted. Otherwise, only FILE itself is deleted using RM." ;; *) func_fatal_help "invalid operation mode \`$opt_mode'" ;; esac echo $ECHO "Try \`$progname --help' for more information about other modes." } # Now that we've collected a possible --mode arg, show help if necessary if $opt_help; then if test "$opt_help" = :; then func_mode_help else { func_help noexit for opt_mode in compile link execute install finish uninstall clean; do func_mode_help done } | sed -n '1p; 2,$s/^Usage:/ or: /p' { func_help noexit for opt_mode in compile link execute install finish uninstall clean; do echo func_mode_help done } | sed '1d /^When reporting/,/^Report/{ H d } $x /information about other modes/d /more detailed .*MODE/d s/^Usage:.*--mode=\([^ ]*\) .*/Description of \1 mode:/' fi exit $? fi # func_mode_execute arg... func_mode_execute () { $opt_debug # The first argument is the command name. cmd="$nonopt" test -z "$cmd" && \ func_fatal_help "you must specify a COMMAND" # Handle -dlopen flags immediately. for file in $opt_dlopen; do test -f "$file" \ || func_fatal_help "\`$file' is not a file" dir= case $file in *.la) func_resolve_sysroot "$file" file=$func_resolve_sysroot_result # Check to see that this really is a libtool archive. func_lalib_unsafe_p "$file" \ || func_fatal_help "\`$lib' is not a valid libtool archive" # Read the libtool library. dlname= library_names= func_source "$file" # Skip this library if it cannot be dlopened. if test -z "$dlname"; then # Warn if it was a shared library. test -n "$library_names" && \ func_warning "\`$file' was not linked with \`-export-dynamic'" continue fi func_dirname "$file" "" "." dir="$func_dirname_result" if test -f "$dir/$objdir/$dlname"; then func_append dir "/$objdir" else if test ! -f "$dir/$dlname"; then func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'" fi fi ;; *.lo) # Just add the directory containing the .lo file. func_dirname "$file" "" "." dir="$func_dirname_result" ;; *) func_warning "\`-dlopen' is ignored for non-libtool libraries and objects" continue ;; esac # Get the absolute pathname. absdir=`cd "$dir" && pwd` test -n "$absdir" && dir="$absdir" # Now add the directory to shlibpath_var. if eval "test -z \"\$$shlibpath_var\""; then eval "$shlibpath_var=\"\$dir\"" else eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\"" fi done # This variable tells wrapper scripts just to set shlibpath_var # rather than running their programs. libtool_execute_magic="$magic" # Check if any of the arguments is a wrapper script. args= for file do case $file in -* | *.la | *.lo ) ;; *) # Do a test to see if this is really a libtool program. if func_ltwrapper_script_p "$file"; then func_source "$file" # Transform arg to wrapped name. file="$progdir/$program" elif func_ltwrapper_executable_p "$file"; then func_ltwrapper_scriptname "$file" func_source "$func_ltwrapper_scriptname_result" # Transform arg to wrapped name. file="$progdir/$program" fi ;; esac # Quote arguments (to preserve shell metacharacters). func_append_quoted args "$file" done if test "X$opt_dry_run" = Xfalse; then if test -n "$shlibpath_var"; then # Export the shlibpath_var. eval "export $shlibpath_var" fi # Restore saved environment variables for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES do eval "if test \"\${save_$lt_var+set}\" = set; then $lt_var=\$save_$lt_var; export $lt_var else $lt_unset $lt_var fi" done # Now prepare to actually exec the command. exec_cmd="\$cmd$args" else # Display what would be done. if test -n "$shlibpath_var"; then eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\"" echo "export $shlibpath_var" fi $ECHO "$cmd$args" exit $EXIT_SUCCESS fi } test "$opt_mode" = execute && func_mode_execute ${1+"$@"} # func_mode_finish arg... func_mode_finish () { $opt_debug libs= libdirs= admincmds= for opt in "$nonopt" ${1+"$@"} do if test -d "$opt"; then func_append libdirs " $opt" elif test -f "$opt"; then if func_lalib_unsafe_p "$opt"; then func_append libs " $opt" else func_warning "\`$opt' is not a valid libtool archive" fi else func_fatal_error "invalid argument \`$opt'" fi done if test -n "$libs"; then if test -n "$lt_sysroot"; then sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"` sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;" else sysroot_cmd= fi # Remove sysroot references if $opt_dry_run; then for lib in $libs; do echo "removing references to $lt_sysroot and \`=' prefixes from $lib" done else tmpdir=`func_mktempdir` for lib in $libs; do sed -e "${sysroot_cmd} s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \ > $tmpdir/tmp-la mv -f $tmpdir/tmp-la $lib done ${RM}r "$tmpdir" fi fi if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then for libdir in $libdirs; do if test -n "$finish_cmds"; then # Do each command in the finish commands. func_execute_cmds "$finish_cmds" 'admincmds="$admincmds '"$cmd"'"' fi if test -n "$finish_eval"; then # Do the single finish_eval. eval cmds=\"$finish_eval\" $opt_dry_run || eval "$cmds" || func_append admincmds " $cmds" fi done fi # Exit here if they wanted silent mode. $opt_silent && exit $EXIT_SUCCESS if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then echo "----------------------------------------------------------------------" echo "Libraries have been installed in:" for libdir in $libdirs; do $ECHO " $libdir" done echo echo "If you ever happen to want to link against installed libraries" echo "in a given directory, LIBDIR, you must either use libtool, and" echo "specify the full pathname of the library, or use the \`-LLIBDIR'" echo "flag during linking and do at least one of the following:" if test -n "$shlibpath_var"; then echo " - add LIBDIR to the \`$shlibpath_var' environment variable" echo " during execution" fi if test -n "$runpath_var"; then echo " - add LIBDIR to the \`$runpath_var' environment variable" echo " during linking" fi if test -n "$hardcode_libdir_flag_spec"; then libdir=LIBDIR eval flag=\"$hardcode_libdir_flag_spec\" $ECHO " - use the \`$flag' linker flag" fi if test -n "$admincmds"; then $ECHO " - have your system administrator run these commands:$admincmds" fi if test -f /etc/ld.so.conf; then echo " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'" fi echo echo "See any operating system documentation about shared libraries for" case $host in solaris2.[6789]|solaris2.1[0-9]) echo "more information, such as the ld(1), crle(1) and ld.so(8) manual" echo "pages." ;; *) echo "more information, such as the ld(1) and ld.so(8) manual pages." ;; esac echo "----------------------------------------------------------------------" fi exit $EXIT_SUCCESS } test "$opt_mode" = finish && func_mode_finish ${1+"$@"} # func_mode_install arg... func_mode_install () { $opt_debug # There may be an optional sh(1) argument at the beginning of # install_prog (especially on Windows NT). if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh || # Allow the use of GNU shtool's install command. case $nonopt in *shtool*) :;; *) false;; esac; then # Aesthetically quote it. func_quote_for_eval "$nonopt" install_prog="$func_quote_for_eval_result " arg=$1 shift else install_prog= arg=$nonopt fi # The real first argument should be the name of the installation program. # Aesthetically quote it. func_quote_for_eval "$arg" func_append install_prog "$func_quote_for_eval_result" install_shared_prog=$install_prog case " $install_prog " in *[\\\ /]cp\ *) install_cp=: ;; *) install_cp=false ;; esac # We need to accept at least all the BSD install flags. dest= files= opts= prev= install_type= isdir=no stripme= no_mode=: for arg do arg2= if test -n "$dest"; then func_append files " $dest" dest=$arg continue fi case $arg in -d) isdir=yes ;; -f) if $install_cp; then :; else prev=$arg fi ;; -g | -m | -o) prev=$arg ;; -s) stripme=" -s" continue ;; -*) ;; *) # If the previous option needed an argument, then skip it. if test -n "$prev"; then if test "x$prev" = x-m && test -n "$install_override_mode"; then arg2=$install_override_mode no_mode=false fi prev= else dest=$arg continue fi ;; esac # Aesthetically quote the argument. func_quote_for_eval "$arg" func_append install_prog " $func_quote_for_eval_result" if test -n "$arg2"; then func_quote_for_eval "$arg2" fi func_append install_shared_prog " $func_quote_for_eval_result" done test -z "$install_prog" && \ func_fatal_help "you must specify an install program" test -n "$prev" && \ func_fatal_help "the \`$prev' option requires an argument" if test -n "$install_override_mode" && $no_mode; then if $install_cp; then :; else func_quote_for_eval "$install_override_mode" func_append install_shared_prog " -m $func_quote_for_eval_result" fi fi if test -z "$files"; then if test -z "$dest"; then func_fatal_help "no file or destination specified" else func_fatal_help "you must specify a destination" fi fi # Strip any trailing slash from the destination. func_stripname '' '/' "$dest" dest=$func_stripname_result # Check to see that the destination is a directory. test -d "$dest" && isdir=yes if test "$isdir" = yes; then destdir="$dest" destname= else func_dirname_and_basename "$dest" "" "." destdir="$func_dirname_result" destname="$func_basename_result" # Not a directory, so check to see that there is only one file specified. set dummy $files; shift test "$#" -gt 1 && \ func_fatal_help "\`$dest' is not a directory" fi case $destdir in [\\/]* | [A-Za-z]:[\\/]*) ;; *) for file in $files; do case $file in *.lo) ;; *) func_fatal_help "\`$destdir' must be an absolute directory name" ;; esac done ;; esac # This variable tells wrapper scripts just to set variables rather # than running their programs. libtool_install_magic="$magic" staticlibs= future_libdirs= current_libdirs= for file in $files; do # Do each installation. case $file in *.$libext) # Do the static libraries later. func_append staticlibs " $file" ;; *.la) func_resolve_sysroot "$file" file=$func_resolve_sysroot_result # Check to see that this really is a libtool archive. func_lalib_unsafe_p "$file" \ || func_fatal_help "\`$file' is not a valid libtool archive" library_names= old_library= relink_command= func_source "$file" # Add the libdir to current_libdirs if it is the destination. if test "X$destdir" = "X$libdir"; then case "$current_libdirs " in *" $libdir "*) ;; *) func_append current_libdirs " $libdir" ;; esac else # Note the libdir as a future libdir. case "$future_libdirs " in *" $libdir "*) ;; *) func_append future_libdirs " $libdir" ;; esac fi func_dirname "$file" "/" "" dir="$func_dirname_result" func_append dir "$objdir" if test -n "$relink_command"; then # Determine the prefix the user has applied to our future dir. inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"` # Don't allow the user to place us outside of our expected # location b/c this prevents finding dependent libraries that # are installed to the same prefix. # At present, this check doesn't affect windows .dll's that # are installed into $libdir/../bin (currently, that works fine) # but it's something to keep an eye on. test "$inst_prefix_dir" = "$destdir" && \ func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir" if test -n "$inst_prefix_dir"; then # Stick the inst_prefix_dir data into the link command. relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"` else relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"` fi func_warning "relinking \`$file'" func_show_eval "$relink_command" \ 'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"' fi # See the names of the shared library. set dummy $library_names; shift if test -n "$1"; then realname="$1" shift srcname="$realname" test -n "$relink_command" && srcname="$realname"T # Install the shared library and build the symlinks. func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \ 'exit $?' tstripme="$stripme" case $host_os in cygwin* | mingw* | pw32* | cegcc*) case $realname in *.dll.a) tstripme="" ;; esac ;; esac if test -n "$tstripme" && test -n "$striplib"; then func_show_eval "$striplib $destdir/$realname" 'exit $?' fi if test "$#" -gt 0; then # Delete the old symlinks, and create new ones. # Try `ln -sf' first, because the `ln' binary might depend on # the symlink we replace! Solaris /bin/ln does not understand -f, # so we also need to try rm && ln -s. for linkname do test "$linkname" != "$realname" \ && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })" done fi # Do each command in the postinstall commands. lib="$destdir/$realname" func_execute_cmds "$postinstall_cmds" 'exit $?' fi # Install the pseudo-library for information purposes. func_basename "$file" name="$func_basename_result" instname="$dir/$name"i func_show_eval "$install_prog $instname $destdir/$name" 'exit $?' # Maybe install the static library, too. test -n "$old_library" && func_append staticlibs " $dir/$old_library" ;; *.lo) # Install (i.e. copy) a libtool object. # Figure out destination file name, if it wasn't already specified. if test -n "$destname"; then destfile="$destdir/$destname" else func_basename "$file" destfile="$func_basename_result" destfile="$destdir/$destfile" fi # Deduce the name of the destination old-style object file. case $destfile in *.lo) func_lo2o "$destfile" staticdest=$func_lo2o_result ;; *.$objext) staticdest="$destfile" destfile= ;; *) func_fatal_help "cannot copy a libtool object to \`$destfile'" ;; esac # Install the libtool object if requested. test -n "$destfile" && \ func_show_eval "$install_prog $file $destfile" 'exit $?' # Install the old object if enabled. if test "$build_old_libs" = yes; then # Deduce the name of the old-style object file. func_lo2o "$file" staticobj=$func_lo2o_result func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?' fi exit $EXIT_SUCCESS ;; *) # Figure out destination file name, if it wasn't already specified. if test -n "$destname"; then destfile="$destdir/$destname" else func_basename "$file" destfile="$func_basename_result" destfile="$destdir/$destfile" fi # If the file is missing, and there is a .exe on the end, strip it # because it is most likely a libtool script we actually want to # install stripped_ext="" case $file in *.exe) if test ! -f "$file"; then func_stripname '' '.exe' "$file" file=$func_stripname_result stripped_ext=".exe" fi ;; esac # Do a test to see if this is really a libtool program. case $host in *cygwin* | *mingw*) if func_ltwrapper_executable_p "$file"; then func_ltwrapper_scriptname "$file" wrapper=$func_ltwrapper_scriptname_result else func_stripname '' '.exe' "$file" wrapper=$func_stripname_result fi ;; *) wrapper=$file ;; esac if func_ltwrapper_script_p "$wrapper"; then notinst_deplibs= relink_command= func_source "$wrapper" # Check the variables that should have been set. test -z "$generated_by_libtool_version" && \ func_fatal_error "invalid libtool wrapper script \`$wrapper'" finalize=yes for lib in $notinst_deplibs; do # Check to see that each library is installed. libdir= if test -f "$lib"; then func_source "$lib" fi libfile="$libdir/"`$ECHO "$lib" | $SED 's%^.*/%%g'` ### testsuite: skip nested quoting test if test -n "$libdir" && test ! -f "$libfile"; then func_warning "\`$lib' has not been installed in \`$libdir'" finalize=no fi done relink_command= func_source "$wrapper" outputname= if test "$fast_install" = no && test -n "$relink_command"; then $opt_dry_run || { if test "$finalize" = yes; then tmpdir=`func_mktempdir` func_basename "$file$stripped_ext" file="$func_basename_result" outputname="$tmpdir/$file" # Replace the output file specification. relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'` $opt_silent || { func_quote_for_expand "$relink_command" eval "func_echo $func_quote_for_expand_result" } if eval "$relink_command"; then : else func_error "error: relink \`$file' with the above command before installing it" $opt_dry_run || ${RM}r "$tmpdir" continue fi file="$outputname" else func_warning "cannot relink \`$file'" fi } else # Install the binary that we compiled earlier. file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"` fi fi # remove .exe since cygwin /usr/bin/install will append another # one anyway case $install_prog,$host in */usr/bin/install*,*cygwin*) case $file:$destfile in *.exe:*.exe) # this is ok ;; *.exe:*) destfile=$destfile.exe ;; *:*.exe) func_stripname '' '.exe' "$destfile" destfile=$func_stripname_result ;; esac ;; esac func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?' $opt_dry_run || if test -n "$outputname"; then ${RM}r "$tmpdir" fi ;; esac done for file in $staticlibs; do func_basename "$file" name="$func_basename_result" # Set up the ranlib parameters. oldlib="$destdir/$name" func_to_tool_file "$oldlib" func_convert_file_msys_to_w32 tool_oldlib=$func_to_tool_file_result func_show_eval "$install_prog \$file \$oldlib" 'exit $?' if test -n "$stripme" && test -n "$old_striplib"; then func_show_eval "$old_striplib $tool_oldlib" 'exit $?' fi # Do each command in the postinstall commands. func_execute_cmds "$old_postinstall_cmds" 'exit $?' done test -n "$future_libdirs" && \ func_warning "remember to run \`$progname --finish$future_libdirs'" if test -n "$current_libdirs"; then # Maybe just do a dry run. $opt_dry_run && current_libdirs=" -n$current_libdirs" exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs' else exit $EXIT_SUCCESS fi } test "$opt_mode" = install && func_mode_install ${1+"$@"} # func_generate_dlsyms outputname originator pic_p # Extract symbols from dlprefiles and create ${outputname}S.o with # a dlpreopen symbol table. func_generate_dlsyms () { $opt_debug my_outputname="$1" my_originator="$2" my_pic_p="${3-no}" my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'` my_dlsyms= if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then if test -n "$NM" && test -n "$global_symbol_pipe"; then my_dlsyms="${my_outputname}S.c" else func_error "not configured to extract global symbols from dlpreopened files" fi fi if test -n "$my_dlsyms"; then case $my_dlsyms in "") ;; *.c) # Discover the nlist of each of the dlfiles. nlist="$output_objdir/${my_outputname}.nm" func_show_eval "$RM $nlist ${nlist}S ${nlist}T" # Parse the name list into a source file. func_verbose "creating $output_objdir/$my_dlsyms" $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\ /* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */ /* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */ #ifdef __cplusplus extern \"C\" { #endif #if defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4)) #pragma GCC diagnostic ignored \"-Wstrict-prototypes\" #endif /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ #if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE) /* DATA imports from DLLs on WIN32 con't be const, because runtime relocations are performed -- see ld's documentation on pseudo-relocs. */ # define LT_DLSYM_CONST #elif defined(__osf__) /* This system does not cope well with relocations in const data. */ # define LT_DLSYM_CONST #else # define LT_DLSYM_CONST const #endif /* External symbol declarations for the compiler. */\ " if test "$dlself" = yes; then func_verbose "generating symbol list for \`$output'" $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist" # Add our own program objects to the symbol list. progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP` for progfile in $progfiles; do func_to_tool_file "$progfile" func_convert_file_msys_to_w32 func_verbose "extracting global C symbols from \`$func_to_tool_file_result'" $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'" done if test -n "$exclude_expsyms"; then $opt_dry_run || { eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T' eval '$MV "$nlist"T "$nlist"' } fi if test -n "$export_symbols_regex"; then $opt_dry_run || { eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T' eval '$MV "$nlist"T "$nlist"' } fi # Prepare the list of exported symbols if test -z "$export_symbols"; then export_symbols="$output_objdir/$outputname.exp" $opt_dry_run || { $RM $export_symbols eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"' case $host in *cygwin* | *mingw* | *cegcc* ) eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"' ;; esac } else $opt_dry_run || { eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"' eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T' eval '$MV "$nlist"T "$nlist"' case $host in *cygwin* | *mingw* | *cegcc* ) eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' eval 'cat "$nlist" >> "$output_objdir/$outputname.def"' ;; esac } fi fi for dlprefile in $dlprefiles; do func_verbose "extracting global C symbols from \`$dlprefile'" func_basename "$dlprefile" name="$func_basename_result" case $host in *cygwin* | *mingw* | *cegcc* ) # if an import library, we need to obtain dlname if func_win32_import_lib_p "$dlprefile"; then func_tr_sh "$dlprefile" eval "curr_lafile=\$libfile_$func_tr_sh_result" dlprefile_dlbasename="" if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then # Use subshell, to avoid clobbering current variable values dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"` if test -n "$dlprefile_dlname" ; then func_basename "$dlprefile_dlname" dlprefile_dlbasename="$func_basename_result" else # no lafile. user explicitly requested -dlpreopen . $sharedlib_from_linklib_cmd "$dlprefile" dlprefile_dlbasename=$sharedlib_from_linklib_result fi fi $opt_dry_run || { if test -n "$dlprefile_dlbasename" ; then eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"' else func_warning "Could not compute DLL name from $name" eval '$ECHO ": $name " >> "$nlist"' fi func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe | $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'" } else # not an import lib $opt_dry_run || { eval '$ECHO ": $name " >> "$nlist"' func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" } fi ;; *) $opt_dry_run || { eval '$ECHO ": $name " >> "$nlist"' func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32 eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'" } ;; esac done $opt_dry_run || { # Make sure we have at least an empty file. test -f "$nlist" || : > "$nlist" if test -n "$exclude_expsyms"; then $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T $MV "$nlist"T "$nlist" fi # Try sorting and uniquifying the output. if $GREP -v "^: " < "$nlist" | if sort -k 3 /dev/null 2>&1; then sort -k 3 else sort +2 fi | uniq > "$nlist"S; then : else $GREP -v "^: " < "$nlist" > "$nlist"S fi if test -f "$nlist"S; then eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"' else echo '/* NONE */' >> "$output_objdir/$my_dlsyms" fi echo >> "$output_objdir/$my_dlsyms" "\ /* The mapping between symbol names and symbols. */ typedef struct { const char *name; void *address; } lt_dlsymlist; extern LT_DLSYM_CONST lt_dlsymlist lt_${my_prefix}_LTX_preloaded_symbols[]; LT_DLSYM_CONST lt_dlsymlist lt_${my_prefix}_LTX_preloaded_symbols[] = {\ { \"$my_originator\", (void *) 0 }," case $need_lib_prefix in no) eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms" ;; *) eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms" ;; esac echo >> "$output_objdir/$my_dlsyms" "\ {0, (void *) 0} }; /* This works around a problem in FreeBSD linker */ #ifdef FREEBSD_WORKAROUND static const void *lt_preloaded_setup() { return lt_${my_prefix}_LTX_preloaded_symbols; } #endif #ifdef __cplusplus } #endif\ " } # !$opt_dry_run pic_flag_for_symtable= case "$compile_command " in *" -static "*) ;; *) case $host in # compiling the symbol table file with pic_flag works around # a FreeBSD bug that causes programs to crash when -lm is # linked before any other PIC object. But we must not use # pic_flag when linking with -static. The problem exists in # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1. *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*) pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;; *-*-hpux*) pic_flag_for_symtable=" $pic_flag" ;; *) if test "X$my_pic_p" != Xno; then pic_flag_for_symtable=" $pic_flag" fi ;; esac ;; esac symtab_cflags= for arg in $LTCFLAGS; do case $arg in -pie | -fpie | -fPIE) ;; *) func_append symtab_cflags " $arg" ;; esac done # Now compile the dynamic symbol file. func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?' # Clean up the generated files. func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"' # Transform the symbol file into the correct name. symfileobj="$output_objdir/${my_outputname}S.$objext" case $host in *cygwin* | *mingw* | *cegcc* ) if test -f "$output_objdir/$my_outputname.def"; then compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` else compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` fi ;; *) compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"` finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"` ;; esac ;; *) func_fatal_error "unknown suffix for \`$my_dlsyms'" ;; esac else # We keep going just in case the user didn't refer to # lt_preloaded_symbols. The linker will fail if global_symbol_pipe # really was required. # Nullify the symbol file. compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"` finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"` fi } # func_win32_libid arg # return the library type of file 'arg' # # Need a lot of goo to handle *both* DLLs and import libs # Has to be a shell function in order to 'eat' the argument # that is supplied when $file_magic_command is called. # Despite the name, also deal with 64 bit binaries. func_win32_libid () { $opt_debug win32_libid_type="unknown" win32_fileres=`file -L $1 2>/dev/null` case $win32_fileres in *ar\ archive\ import\ library*) # definitely import win32_libid_type="x86 archive import" ;; *ar\ archive*) # could be an import, or static # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD. if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null | $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then func_to_tool_file "$1" func_convert_file_msys_to_w32 win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" | $SED -n -e ' 1,100{ / I /{ s,.*,import, p q } }'` case $win32_nmres in import*) win32_libid_type="x86 archive import";; *) win32_libid_type="x86 archive static";; esac fi ;; *DLL*) win32_libid_type="x86 DLL" ;; *executable*) # but shell scripts are "executable" too... case $win32_fileres in *MS\ Windows\ PE\ Intel*) win32_libid_type="x86 DLL" ;; esac ;; esac $ECHO "$win32_libid_type" } # func_cygming_dll_for_implib ARG # # Platform-specific function to extract the # name of the DLL associated with the specified # import library ARG. # Invoked by eval'ing the libtool variable # $sharedlib_from_linklib_cmd # Result is available in the variable # $sharedlib_from_linklib_result func_cygming_dll_for_implib () { $opt_debug sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"` } # func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs # # The is the core of a fallback implementation of a # platform-specific function to extract the name of the # DLL associated with the specified import library LIBNAME. # # SECTION_NAME is either .idata$6 or .idata$7, depending # on the platform and compiler that created the implib. # # Echos the name of the DLL associated with the # specified import library. func_cygming_dll_for_implib_fallback_core () { $opt_debug match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"` $OBJDUMP -s --section "$1" "$2" 2>/dev/null | $SED '/^Contents of section '"$match_literal"':/{ # Place marker at beginning of archive member dllname section s/.*/====MARK====/ p d } # These lines can sometimes be longer than 43 characters, but # are always uninteresting /:[ ]*file format pe[i]\{,1\}-/d /^In archive [^:]*:/d # Ensure marker is printed /^====MARK====/p # Remove all lines with less than 43 characters /^.\{43\}/!d # From remaining lines, remove first 43 characters s/^.\{43\}//' | $SED -n ' # Join marker and all lines until next marker into a single line /^====MARK====/ b para H $ b para b :para x s/\n//g # Remove the marker s/^====MARK====// # Remove trailing dots and whitespace s/[\. \t]*$// # Print /./p' | # we now have a list, one entry per line, of the stringified # contents of the appropriate section of all members of the # archive which possess that section. Heuristic: eliminate # all those which have a first or second character that is # a '.' (that is, objdump's representation of an unprintable # character.) This should work for all archives with less than # 0x302f exports -- but will fail for DLLs whose name actually # begins with a literal '.' or a single character followed by # a '.'. # # Of those that remain, print the first one. $SED -e '/^\./d;/^.\./d;q' } # func_cygming_gnu_implib_p ARG # This predicate returns with zero status (TRUE) if # ARG is a GNU/binutils-style import library. Returns # with nonzero status (FALSE) otherwise. func_cygming_gnu_implib_p () { $opt_debug func_to_tool_file "$1" func_convert_file_msys_to_w32 func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'` test -n "$func_cygming_gnu_implib_tmp" } # func_cygming_ms_implib_p ARG # This predicate returns with zero status (TRUE) if # ARG is an MS-style import library. Returns # with nonzero status (FALSE) otherwise. func_cygming_ms_implib_p () { $opt_debug func_to_tool_file "$1" func_convert_file_msys_to_w32 func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'` test -n "$func_cygming_ms_implib_tmp" } # func_cygming_dll_for_implib_fallback ARG # Platform-specific function to extract the # name of the DLL associated with the specified # import library ARG. # # This fallback implementation is for use when $DLLTOOL # does not support the --identify-strict option. # Invoked by eval'ing the libtool variable # $sharedlib_from_linklib_cmd # Result is available in the variable # $sharedlib_from_linklib_result func_cygming_dll_for_implib_fallback () { $opt_debug if func_cygming_gnu_implib_p "$1" ; then # binutils import library sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"` elif func_cygming_ms_implib_p "$1" ; then # ms-generated import library sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"` else # unknown sharedlib_from_linklib_result="" fi } # func_extract_an_archive dir oldlib func_extract_an_archive () { $opt_debug f_ex_an_ar_dir="$1"; shift f_ex_an_ar_oldlib="$1" if test "$lock_old_archive_extraction" = yes; then lockfile=$f_ex_an_ar_oldlib.lock until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do func_echo "Waiting for $lockfile to be removed" sleep 2 done fi func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \ 'stat=$?; rm -f "$lockfile"; exit $stat' if test "$lock_old_archive_extraction" = yes; then $opt_dry_run || rm -f "$lockfile" fi if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then : else func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib" fi } # func_extract_archives gentop oldlib ... func_extract_archives () { $opt_debug my_gentop="$1"; shift my_oldlibs=${1+"$@"} my_oldobjs="" my_xlib="" my_xabs="" my_xdir="" for my_xlib in $my_oldlibs; do # Extract the objects. case $my_xlib in [\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;; *) my_xabs=`pwd`"/$my_xlib" ;; esac func_basename "$my_xlib" my_xlib="$func_basename_result" my_xlib_u=$my_xlib while :; do case " $extracted_archives " in *" $my_xlib_u "*) func_arith $extracted_serial + 1 extracted_serial=$func_arith_result my_xlib_u=lt$extracted_serial-$my_xlib ;; *) break ;; esac done extracted_archives="$extracted_archives $my_xlib_u" my_xdir="$my_gentop/$my_xlib_u" func_mkdir_p "$my_xdir" case $host in *-darwin*) func_verbose "Extracting $my_xabs" # Do not bother doing anything if just a dry run $opt_dry_run || { darwin_orig_dir=`pwd` cd $my_xdir || exit $? darwin_archive=$my_xabs darwin_curdir=`pwd` darwin_base_archive=`basename "$darwin_archive"` darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true` if test -n "$darwin_arches"; then darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'` darwin_arch= func_verbose "$darwin_base_archive has multiple architectures $darwin_arches" for darwin_arch in $darwin_arches ; do func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}" $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}" cd "unfat-$$/${darwin_base_archive}-${darwin_arch}" func_extract_an_archive "`pwd`" "${darwin_base_archive}" cd "$darwin_curdir" $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" done # $darwin_arches ## Okay now we've a bunch of thin objects, gotta fatten them up :) darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u` darwin_file= darwin_files= for darwin_file in $darwin_filelist; do darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP` $LIPO -create -output "$darwin_file" $darwin_files done # $darwin_filelist $RM -rf unfat-$$ cd "$darwin_orig_dir" else cd $darwin_orig_dir func_extract_an_archive "$my_xdir" "$my_xabs" fi # $darwin_arches } # !$opt_dry_run ;; *) func_extract_an_archive "$my_xdir" "$my_xabs" ;; esac my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP` done func_extract_archives_result="$my_oldobjs" } # func_emit_wrapper [arg=no] # # Emit a libtool wrapper script on stdout. # Don't directly open a file because we may want to # incorporate the script contents within a cygwin/mingw # wrapper executable. Must ONLY be called from within # func_mode_link because it depends on a number of variables # set therein. # # ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR # variable will take. If 'yes', then the emitted script # will assume that the directory in which it is stored is # the $objdir directory. This is a cygwin/mingw-specific # behavior. func_emit_wrapper () { func_emit_wrapper_arg1=${1-no} $ECHO "\ #! $SHELL # $output - temporary wrapper script for $objdir/$outputname # Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION # # The $output program cannot be directly executed until all the libtool # libraries that it depends on are installed. # # This wrapper script should never be moved out of the build directory. # If it is, it will not operate correctly. # Sed substitution that helps us do robust quoting. It backslashifies # metacharacters that are still active within double-quoted strings. sed_quote_subst='$sed_quote_subst' # Be Bourne compatible if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then emulate sh NULLCMD=: # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which # is contrary to our usage. Disable this feature. alias -g '\${1+\"\$@\"}'='\"\$@\"' setopt NO_GLOB_SUBST else case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac fi BIN_SH=xpg4; export BIN_SH # for Tru64 DUALCASE=1; export DUALCASE # for MKS sh # The HP-UX ksh and POSIX shell print the target directory to stdout # if CDPATH is set. (unset CDPATH) >/dev/null 2>&1 && unset CDPATH relink_command=\"$relink_command\" # This environment variable determines our operation mode. if test \"\$libtool_install_magic\" = \"$magic\"; then # install mode needs the following variables: generated_by_libtool_version='$macro_version' notinst_deplibs='$notinst_deplibs' else # When we are sourced in execute mode, \$file and \$ECHO are already set. if test \"\$libtool_execute_magic\" != \"$magic\"; then file=\"\$0\"" qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"` $ECHO "\ # A function that is used when there is no print builtin or printf. func_fallback_echo () { eval 'cat <<_LTECHO_EOF \$1 _LTECHO_EOF' } ECHO=\"$qECHO\" fi # Very basic option parsing. These options are (a) specific to # the libtool wrapper, (b) are identical between the wrapper # /script/ and the wrapper /executable/ which is used only on # windows platforms, and (c) all begin with the string "--lt-" # (application programs are unlikely to have options which match # this pattern). # # There are only two supported options: --lt-debug and # --lt-dump-script. There is, deliberately, no --lt-help. # # The first argument to this parsing function should be the # script's $0 value, followed by "$@". lt_option_debug= func_parse_lt_options () { lt_script_arg0=\$0 shift for lt_opt do case \"\$lt_opt\" in --lt-debug) lt_option_debug=1 ;; --lt-dump-script) lt_dump_D=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%/[^/]*$%%'\` test \"X\$lt_dump_D\" = \"X\$lt_script_arg0\" && lt_dump_D=. lt_dump_F=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%^.*/%%'\` cat \"\$lt_dump_D/\$lt_dump_F\" exit 0 ;; --lt-*) \$ECHO \"Unrecognized --lt- option: '\$lt_opt'\" 1>&2 exit 1 ;; esac done # Print the debug banner immediately: if test -n \"\$lt_option_debug\"; then echo \"${outputname}:${output}:\${LINENO}: libtool wrapper (GNU $PACKAGE$TIMESTAMP) $VERSION\" 1>&2 fi } # Used when --lt-debug. Prints its arguments to stdout # (redirection is the responsibility of the caller) func_lt_dump_args () { lt_dump_args_N=1; for lt_arg do \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[\$lt_dump_args_N]: \$lt_arg\" lt_dump_args_N=\`expr \$lt_dump_args_N + 1\` done } # Core function for launching the target application func_exec_program_core () { " case $host in # Backslashes separate directories on plain windows *-*-mingw | *-*-os2* | *-cegcc*) $ECHO "\ if test -n \"\$lt_option_debug\"; then \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir\\\\\$program\" 1>&2 func_lt_dump_args \${1+\"\$@\"} 1>&2 fi exec \"\$progdir\\\\\$program\" \${1+\"\$@\"} " ;; *) $ECHO "\ if test -n \"\$lt_option_debug\"; then \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir/\$program\" 1>&2 func_lt_dump_args \${1+\"\$@\"} 1>&2 fi exec \"\$progdir/\$program\" \${1+\"\$@\"} " ;; esac $ECHO "\ \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2 exit 1 } # A function to encapsulate launching the target application # Strips options in the --lt-* namespace from \$@ and # launches target application with the remaining arguments. func_exec_program () { case \" \$* \" in *\\ --lt-*) for lt_wr_arg do case \$lt_wr_arg in --lt-*) ;; *) set x \"\$@\" \"\$lt_wr_arg\"; shift;; esac shift done ;; esac func_exec_program_core \${1+\"\$@\"} } # Parse options func_parse_lt_options \"\$0\" \${1+\"\$@\"} # Find the directory that this script lives in. thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\` test \"x\$thisdir\" = \"x\$file\" && thisdir=. # Follow symbolic links until we get to the real thisdir. file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\` while test -n \"\$file\"; do destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\` # If there was a directory component, then change thisdir. if test \"x\$destdir\" != \"x\$file\"; then case \"\$destdir\" in [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;; *) thisdir=\"\$thisdir/\$destdir\" ;; esac fi file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\` file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\` done # Usually 'no', except on cygwin/mingw when embedded into # the cwrapper. WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1 if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then # special case for '.' if test \"\$thisdir\" = \".\"; then thisdir=\`pwd\` fi # remove .libs from thisdir case \"\$thisdir\" in *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;; $objdir ) thisdir=. ;; esac fi # Try to get the absolute directory name. absdir=\`cd \"\$thisdir\" && pwd\` test -n \"\$absdir\" && thisdir=\"\$absdir\" " if test "$fast_install" = yes; then $ECHO "\ program=lt-'$outputname'$exeext progdir=\"\$thisdir/$objdir\" if test ! -f \"\$progdir/\$program\" || { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\ test \"X\$file\" != \"X\$progdir/\$program\"; }; then file=\"\$\$-\$program\" if test ! -d \"\$progdir\"; then $MKDIR \"\$progdir\" else $RM \"\$progdir/\$file\" fi" $ECHO "\ # relink executable if necessary if test -n \"\$relink_command\"; then if relink_command_output=\`eval \$relink_command 2>&1\`; then : else $ECHO \"\$relink_command_output\" >&2 $RM \"\$progdir/\$file\" exit 1 fi fi $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null || { $RM \"\$progdir/\$program\"; $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; } $RM \"\$progdir/\$file\" fi" else $ECHO "\ program='$outputname' progdir=\"\$thisdir/$objdir\" " fi $ECHO "\ if test -f \"\$progdir/\$program\"; then" # fixup the dll searchpath if we need to. # # Fix the DLL searchpath if we need to. Do this before prepending # to shlibpath, because on Windows, both are PATH and uninstalled # libraries must come first. if test -n "$dllsearchpath"; then $ECHO "\ # Add the dll search path components to the executable PATH PATH=$dllsearchpath:\$PATH " fi # Export our shlibpath_var if we have one. if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then $ECHO "\ # Add our own library path to $shlibpath_var $shlibpath_var=\"$temp_rpath\$$shlibpath_var\" # Some systems cannot cope with colon-terminated $shlibpath_var # The second colon is a workaround for a bug in BeOS R4 sed $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\` export $shlibpath_var " fi $ECHO "\ if test \"\$libtool_execute_magic\" != \"$magic\"; then # Run the actual program with our arguments. func_exec_program \${1+\"\$@\"} fi else # The program doesn't exist. \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2 \$ECHO \"This script is just a wrapper for \$program.\" 1>&2 \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2 exit 1 fi fi\ " } # func_emit_cwrapperexe_src # emit the source code for a wrapper executable on stdout # Must ONLY be called from within func_mode_link because # it depends on a number of variable set therein. func_emit_cwrapperexe_src () { cat < #include #ifdef _MSC_VER # include # include # include #else # include # include # ifdef __CYGWIN__ # include # endif #endif #include #include #include #include #include #include #include #include /* declarations of non-ANSI functions */ #if defined(__MINGW32__) # ifdef __STRICT_ANSI__ int _putenv (const char *); # endif #elif defined(__CYGWIN__) # ifdef __STRICT_ANSI__ char *realpath (const char *, char *); int putenv (char *); int setenv (const char *, const char *, int); # endif /* #elif defined (other platforms) ... */ #endif /* portability defines, excluding path handling macros */ #if defined(_MSC_VER) # define setmode _setmode # define stat _stat # define chmod _chmod # define getcwd _getcwd # define putenv _putenv # define S_IXUSR _S_IEXEC # ifndef _INTPTR_T_DEFINED # define _INTPTR_T_DEFINED # define intptr_t int # endif #elif defined(__MINGW32__) # define setmode _setmode # define stat _stat # define chmod _chmod # define getcwd _getcwd # define putenv _putenv #elif defined(__CYGWIN__) # define HAVE_SETENV # define FOPEN_WB "wb" /* #elif defined (other platforms) ... */ #endif #if defined(PATH_MAX) # define LT_PATHMAX PATH_MAX #elif defined(MAXPATHLEN) # define LT_PATHMAX MAXPATHLEN #else # define LT_PATHMAX 1024 #endif #ifndef S_IXOTH # define S_IXOTH 0 #endif #ifndef S_IXGRP # define S_IXGRP 0 #endif /* path handling portability macros */ #ifndef DIR_SEPARATOR # define DIR_SEPARATOR '/' # define PATH_SEPARATOR ':' #endif #if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \ defined (__OS2__) # define HAVE_DOS_BASED_FILE_SYSTEM # define FOPEN_WB "wb" # ifndef DIR_SEPARATOR_2 # define DIR_SEPARATOR_2 '\\' # endif # ifndef PATH_SEPARATOR_2 # define PATH_SEPARATOR_2 ';' # endif #endif #ifndef DIR_SEPARATOR_2 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) #else /* DIR_SEPARATOR_2 */ # define IS_DIR_SEPARATOR(ch) \ (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) #endif /* DIR_SEPARATOR_2 */ #ifndef PATH_SEPARATOR_2 # define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR) #else /* PATH_SEPARATOR_2 */ # define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2) #endif /* PATH_SEPARATOR_2 */ #ifndef FOPEN_WB # define FOPEN_WB "w" #endif #ifndef _O_BINARY # define _O_BINARY 0 #endif #define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type))) #define XFREE(stale) do { \ if (stale) { free ((void *) stale); stale = 0; } \ } while (0) #if defined(LT_DEBUGWRAPPER) static int lt_debug = 1; #else static int lt_debug = 0; #endif const char *program_name = "libtool-wrapper"; /* in case xstrdup fails */ void *xmalloc (size_t num); char *xstrdup (const char *string); const char *base_name (const char *name); char *find_executable (const char *wrapper); char *chase_symlinks (const char *pathspec); int make_executable (const char *path); int check_executable (const char *path); char *strendzap (char *str, const char *pat); void lt_debugprintf (const char *file, int line, const char *fmt, ...); void lt_fatal (const char *file, int line, const char *message, ...); static const char *nonnull (const char *s); static const char *nonempty (const char *s); void lt_setenv (const char *name, const char *value); char *lt_extend_str (const char *orig_value, const char *add, int to_end); void lt_update_exe_path (const char *name, const char *value); void lt_update_lib_path (const char *name, const char *value); char **prepare_spawn (char **argv); void lt_dump_script (FILE *f); EOF cat <= 0) && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) return 1; else return 0; } int make_executable (const char *path) { int rval = 0; struct stat st; lt_debugprintf (__FILE__, __LINE__, "(make_executable): %s\n", nonempty (path)); if ((!path) || (!*path)) return 0; if (stat (path, &st) >= 0) { rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR); } return rval; } /* Searches for the full path of the wrapper. Returns newly allocated full path name if found, NULL otherwise Does not chase symlinks, even on platforms that support them. */ char * find_executable (const char *wrapper) { int has_slash = 0; const char *p; const char *p_next; /* static buffer for getcwd */ char tmp[LT_PATHMAX + 1]; int tmp_len; char *concat_name; lt_debugprintf (__FILE__, __LINE__, "(find_executable): %s\n", nonempty (wrapper)); if ((wrapper == NULL) || (*wrapper == '\0')) return NULL; /* Absolute path? */ #if defined (HAVE_DOS_BASED_FILE_SYSTEM) if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':') { concat_name = xstrdup (wrapper); if (check_executable (concat_name)) return concat_name; XFREE (concat_name); } else { #endif if (IS_DIR_SEPARATOR (wrapper[0])) { concat_name = xstrdup (wrapper); if (check_executable (concat_name)) return concat_name; XFREE (concat_name); } #if defined (HAVE_DOS_BASED_FILE_SYSTEM) } #endif for (p = wrapper; *p; p++) if (*p == '/') { has_slash = 1; break; } if (!has_slash) { /* no slashes; search PATH */ const char *path = getenv ("PATH"); if (path != NULL) { for (p = path; *p; p = p_next) { const char *q; size_t p_len; for (q = p; *q; q++) if (IS_PATH_SEPARATOR (*q)) break; p_len = q - p; p_next = (*q == '\0' ? q : q + 1); if (p_len == 0) { /* empty path: current directory */ if (getcwd (tmp, LT_PATHMAX) == NULL) lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", nonnull (strerror (errno))); tmp_len = strlen (tmp); concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); memcpy (concat_name, tmp, tmp_len); concat_name[tmp_len] = '/'; strcpy (concat_name + tmp_len + 1, wrapper); } else { concat_name = XMALLOC (char, p_len + 1 + strlen (wrapper) + 1); memcpy (concat_name, p, p_len); concat_name[p_len] = '/'; strcpy (concat_name + p_len + 1, wrapper); } if (check_executable (concat_name)) return concat_name; XFREE (concat_name); } } /* not found in PATH; assume curdir */ } /* Relative path | not found in path: prepend cwd */ if (getcwd (tmp, LT_PATHMAX) == NULL) lt_fatal (__FILE__, __LINE__, "getcwd failed: %s", nonnull (strerror (errno))); tmp_len = strlen (tmp); concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); memcpy (concat_name, tmp, tmp_len); concat_name[tmp_len] = '/'; strcpy (concat_name + tmp_len + 1, wrapper); if (check_executable (concat_name)) return concat_name; XFREE (concat_name); return NULL; } char * chase_symlinks (const char *pathspec) { #ifndef S_ISLNK return xstrdup (pathspec); #else char buf[LT_PATHMAX]; struct stat s; char *tmp_pathspec = xstrdup (pathspec); char *p; int has_symlinks = 0; while (strlen (tmp_pathspec) && !has_symlinks) { lt_debugprintf (__FILE__, __LINE__, "checking path component for symlinks: %s\n", tmp_pathspec); if (lstat (tmp_pathspec, &s) == 0) { if (S_ISLNK (s.st_mode) != 0) { has_symlinks = 1; break; } /* search backwards for last DIR_SEPARATOR */ p = tmp_pathspec + strlen (tmp_pathspec) - 1; while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) p--; if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) { /* no more DIR_SEPARATORS left */ break; } *p = '\0'; } else { lt_fatal (__FILE__, __LINE__, "error accessing file \"%s\": %s", tmp_pathspec, nonnull (strerror (errno))); } } XFREE (tmp_pathspec); if (!has_symlinks) { return xstrdup (pathspec); } tmp_pathspec = realpath (pathspec, buf); if (tmp_pathspec == 0) { lt_fatal (__FILE__, __LINE__, "could not follow symlinks for %s", pathspec); } return xstrdup (tmp_pathspec); #endif } char * strendzap (char *str, const char *pat) { size_t len, patlen; assert (str != NULL); assert (pat != NULL); len = strlen (str); patlen = strlen (pat); if (patlen <= len) { str += len - patlen; if (strcmp (str, pat) == 0) *str = '\0'; } return str; } void lt_debugprintf (const char *file, int line, const char *fmt, ...) { va_list args; if (lt_debug) { (void) fprintf (stderr, "%s:%s:%d: ", program_name, file, line); va_start (args, fmt); (void) vfprintf (stderr, fmt, args); va_end (args); } } static void lt_error_core (int exit_status, const char *file, int line, const char *mode, const char *message, va_list ap) { fprintf (stderr, "%s:%s:%d: %s: ", program_name, file, line, mode); vfprintf (stderr, message, ap); fprintf (stderr, ".\n"); if (exit_status >= 0) exit (exit_status); } void lt_fatal (const char *file, int line, const char *message, ...) { va_list ap; va_start (ap, message); lt_error_core (EXIT_FAILURE, file, line, "FATAL", message, ap); va_end (ap); } static const char * nonnull (const char *s) { return s ? s : "(null)"; } static const char * nonempty (const char *s) { return (s && !*s) ? "(empty)" : nonnull (s); } void lt_setenv (const char *name, const char *value) { lt_debugprintf (__FILE__, __LINE__, "(lt_setenv) setting '%s' to '%s'\n", nonnull (name), nonnull (value)); { #ifdef HAVE_SETENV /* always make a copy, for consistency with !HAVE_SETENV */ char *str = xstrdup (value); setenv (name, str, 1); #else int len = strlen (name) + 1 + strlen (value) + 1; char *str = XMALLOC (char, len); sprintf (str, "%s=%s", name, value); if (putenv (str) != EXIT_SUCCESS) { XFREE (str); } #endif } } char * lt_extend_str (const char *orig_value, const char *add, int to_end) { char *new_value; if (orig_value && *orig_value) { int orig_value_len = strlen (orig_value); int add_len = strlen (add); new_value = XMALLOC (char, add_len + orig_value_len + 1); if (to_end) { strcpy (new_value, orig_value); strcpy (new_value + orig_value_len, add); } else { strcpy (new_value, add); strcpy (new_value + add_len, orig_value); } } else { new_value = xstrdup (add); } return new_value; } void lt_update_exe_path (const char *name, const char *value) { lt_debugprintf (__FILE__, __LINE__, "(lt_update_exe_path) modifying '%s' by prepending '%s'\n", nonnull (name), nonnull (value)); if (name && *name && value && *value) { char *new_value = lt_extend_str (getenv (name), value, 0); /* some systems can't cope with a ':'-terminated path #' */ int len = strlen (new_value); while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1])) { new_value[len-1] = '\0'; } lt_setenv (name, new_value); XFREE (new_value); } } void lt_update_lib_path (const char *name, const char *value) { lt_debugprintf (__FILE__, __LINE__, "(lt_update_lib_path) modifying '%s' by prepending '%s'\n", nonnull (name), nonnull (value)); if (name && *name && value && *value) { char *new_value = lt_extend_str (getenv (name), value, 0); lt_setenv (name, new_value); XFREE (new_value); } } EOF case $host_os in mingw*) cat <<"EOF" /* Prepares an argument vector before calling spawn(). Note that spawn() does not by itself call the command interpreter (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") : ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); GetVersionEx(&v); v.dwPlatformId == VER_PLATFORM_WIN32_NT; }) ? "cmd.exe" : "command.com"). Instead it simply concatenates the arguments, separated by ' ', and calls CreateProcess(). We must quote the arguments since Win32 CreateProcess() interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a special way: - Space and tab are interpreted as delimiters. They are not treated as delimiters if they are surrounded by double quotes: "...". - Unescaped double quotes are removed from the input. Their only effect is that within double quotes, space and tab are treated like normal characters. - Backslashes not followed by double quotes are not special. - But 2*n+1 backslashes followed by a double quote become n backslashes followed by a double quote (n >= 0): \" -> " \\\" -> \" \\\\\" -> \\" */ #define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" #define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037" char ** prepare_spawn (char **argv) { size_t argc; char **new_argv; size_t i; /* Count number of arguments. */ for (argc = 0; argv[argc] != NULL; argc++) ; /* Allocate new argument vector. */ new_argv = XMALLOC (char *, argc + 1); /* Put quoted arguments into the new argument vector. */ for (i = 0; i < argc; i++) { const char *string = argv[i]; if (string[0] == '\0') new_argv[i] = xstrdup ("\"\""); else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL) { int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL); size_t length; unsigned int backslashes; const char *s; char *quoted_string; char *p; length = 0; backslashes = 0; if (quote_around) length++; for (s = string; *s != '\0'; s++) { char c = *s; if (c == '"') length += backslashes + 1; length++; if (c == '\\') backslashes++; else backslashes = 0; } if (quote_around) length += backslashes + 1; quoted_string = XMALLOC (char, length + 1); p = quoted_string; backslashes = 0; if (quote_around) *p++ = '"'; for (s = string; *s != '\0'; s++) { char c = *s; if (c == '"') { unsigned int j; for (j = backslashes + 1; j > 0; j--) *p++ = '\\'; } *p++ = c; if (c == '\\') backslashes++; else backslashes = 0; } if (quote_around) { unsigned int j; for (j = backslashes; j > 0; j--) *p++ = '\\'; *p++ = '"'; } *p = '\0'; new_argv[i] = quoted_string; } else new_argv[i] = (char *) string; } new_argv[argc] = NULL; return new_argv; } EOF ;; esac cat <<"EOF" void lt_dump_script (FILE* f) { EOF func_emit_wrapper yes | $SED -n -e ' s/^\(.\{79\}\)\(..*\)/\1\ \2/ h s/\([\\"]\)/\\\1/g s/$/\\n/ s/\([^\n]*\).*/ fputs ("\1", f);/p g D' cat <<"EOF" } EOF } # end: func_emit_cwrapperexe_src # func_win32_import_lib_p ARG # True if ARG is an import lib, as indicated by $file_magic_cmd func_win32_import_lib_p () { $opt_debug case `eval $file_magic_cmd \"\$1\" 2>/dev/null | $SED -e 10q` in *import*) : ;; *) false ;; esac } # func_mode_link arg... func_mode_link () { $opt_debug case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) # It is impossible to link a dll without this setting, and # we shouldn't force the makefile maintainer to figure out # which system we are compiling for in order to pass an extra # flag for every libtool invocation. # allow_undefined=no # FIXME: Unfortunately, there are problems with the above when trying # to make a dll which has undefined symbols, in which case not # even a static library is built. For now, we need to specify # -no-undefined on the libtool link line when we can be certain # that all symbols are satisfied, otherwise we get a static library. allow_undefined=yes ;; *) allow_undefined=yes ;; esac libtool_args=$nonopt base_compile="$nonopt $@" compile_command=$nonopt finalize_command=$nonopt compile_rpath= finalize_rpath= compile_shlibpath= finalize_shlibpath= convenience= old_convenience= deplibs= old_deplibs= compiler_flags= linker_flags= dllsearchpath= lib_search_path=`pwd` inst_prefix_dir= new_inherited_linker_flags= avoid_version=no bindir= dlfiles= dlprefiles= dlself=no export_dynamic=no export_symbols= export_symbols_regex= generated= libobjs= ltlibs= module=no no_install=no objs= non_pic_objects= precious_files_regex= prefer_static_libs=no preload=no prev= prevarg= release= rpath= xrpath= perm_rpath= temp_rpath= thread_safe=no vinfo= vinfo_number=no weak_libs= single_module="${wl}-single_module" func_infer_tag $base_compile # We need to know -static, to get the right output filenames. for arg do case $arg in -shared) test "$build_libtool_libs" != yes && \ func_fatal_configuration "can not build a shared library" build_old_libs=no break ;; -all-static | -static | -static-libtool-libs) case $arg in -all-static) if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then func_warning "complete static linking is impossible in this configuration" fi if test -n "$link_static_flag"; then dlopen_self=$dlopen_self_static fi prefer_static_libs=yes ;; -static) if test -z "$pic_flag" && test -n "$link_static_flag"; then dlopen_self=$dlopen_self_static fi prefer_static_libs=built ;; -static-libtool-libs) if test -z "$pic_flag" && test -n "$link_static_flag"; then dlopen_self=$dlopen_self_static fi prefer_static_libs=yes ;; esac build_libtool_libs=no build_old_libs=yes break ;; esac done # See if our shared archives depend on static archives. test -n "$old_archive_from_new_cmds" && build_old_libs=yes # Go through the arguments, transforming them on the way. while test "$#" -gt 0; do arg="$1" shift func_quote_for_eval "$arg" qarg=$func_quote_for_eval_unquoted_result func_append libtool_args " $func_quote_for_eval_result" # If the previous option needs an argument, assign it. if test -n "$prev"; then case $prev in output) func_append compile_command " @OUTPUT@" func_append finalize_command " @OUTPUT@" ;; esac case $prev in bindir) bindir="$arg" prev= continue ;; dlfiles|dlprefiles) if test "$preload" = no; then # Add the symbol object into the linking commands. func_append compile_command " @SYMFILE@" func_append finalize_command " @SYMFILE@" preload=yes fi case $arg in *.la | *.lo) ;; # We handle these cases below. force) if test "$dlself" = no; then dlself=needless export_dynamic=yes fi prev= continue ;; self) if test "$prev" = dlprefiles; then dlself=yes elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then dlself=yes else dlself=needless export_dynamic=yes fi prev= continue ;; *) if test "$prev" = dlfiles; then func_append dlfiles " $arg" else func_append dlprefiles " $arg" fi prev= continue ;; esac ;; expsyms) export_symbols="$arg" test -f "$arg" \ || func_fatal_error "symbol file \`$arg' does not exist" prev= continue ;; expsyms_regex) export_symbols_regex="$arg" prev= continue ;; framework) case $host in *-*-darwin*) case "$deplibs " in *" $qarg.ltframework "*) ;; *) func_append deplibs " $qarg.ltframework" # this is fixed later ;; esac ;; esac prev= continue ;; inst_prefix) inst_prefix_dir="$arg" prev= continue ;; objectlist) if test -f "$arg"; then save_arg=$arg moreargs= for fil in `cat "$save_arg"` do # func_append moreargs " $fil" arg=$fil # A libtool-controlled object. # Check to see that this really is a libtool object. if func_lalib_unsafe_p "$arg"; then pic_object= non_pic_object= # Read the .lo file func_source "$arg" if test -z "$pic_object" || test -z "$non_pic_object" || test "$pic_object" = none && test "$non_pic_object" = none; then func_fatal_error "cannot find name of object for \`$arg'" fi # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir="$func_dirname_result" if test "$pic_object" != none; then # Prepend the subdirectory the object is found in. pic_object="$xdir$pic_object" if test "$prev" = dlfiles; then if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then func_append dlfiles " $pic_object" prev= continue else # If libtool objects are unsupported, then we need to preload. prev=dlprefiles fi fi # CHECK ME: I think I busted this. -Ossama if test "$prev" = dlprefiles; then # Preload the old-style object. func_append dlprefiles " $pic_object" prev= fi # A PIC object. func_append libobjs " $pic_object" arg="$pic_object" fi # Non-PIC object. if test "$non_pic_object" != none; then # Prepend the subdirectory the object is found in. non_pic_object="$xdir$non_pic_object" # A standard non-PIC object func_append non_pic_objects " $non_pic_object" if test -z "$pic_object" || test "$pic_object" = none ; then arg="$non_pic_object" fi else # If the PIC object exists, use it instead. # $xdir was prepended to $pic_object above. non_pic_object="$pic_object" func_append non_pic_objects " $non_pic_object" fi else # Only an error if not doing a dry-run. if $opt_dry_run; then # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir="$func_dirname_result" func_lo2o "$arg" pic_object=$xdir$objdir/$func_lo2o_result non_pic_object=$xdir$func_lo2o_result func_append libobjs " $pic_object" func_append non_pic_objects " $non_pic_object" else func_fatal_error "\`$arg' is not a valid libtool object" fi fi done else func_fatal_error "link input file \`$arg' does not exist" fi arg=$save_arg prev= continue ;; precious_regex) precious_files_regex="$arg" prev= continue ;; release) release="-$arg" prev= continue ;; rpath | xrpath) # We need an absolute path. case $arg in [\\/]* | [A-Za-z]:[\\/]*) ;; *) func_fatal_error "only absolute run-paths are allowed" ;; esac if test "$prev" = rpath; then case "$rpath " in *" $arg "*) ;; *) func_append rpath " $arg" ;; esac else case "$xrpath " in *" $arg "*) ;; *) func_append xrpath " $arg" ;; esac fi prev= continue ;; shrext) shrext_cmds="$arg" prev= continue ;; weak) func_append weak_libs " $arg" prev= continue ;; xcclinker) func_append linker_flags " $qarg" func_append compiler_flags " $qarg" prev= func_append compile_command " $qarg" func_append finalize_command " $qarg" continue ;; xcompiler) func_append compiler_flags " $qarg" prev= func_append compile_command " $qarg" func_append finalize_command " $qarg" continue ;; xlinker) func_append linker_flags " $qarg" func_append compiler_flags " $wl$qarg" prev= func_append compile_command " $wl$qarg" func_append finalize_command " $wl$qarg" continue ;; *) eval "$prev=\"\$arg\"" prev= continue ;; esac fi # test -n "$prev" prevarg="$arg" case $arg in -all-static) if test -n "$link_static_flag"; then # See comment for -static flag below, for more details. func_append compile_command " $link_static_flag" func_append finalize_command " $link_static_flag" fi continue ;; -allow-undefined) # FIXME: remove this flag sometime in the future. func_fatal_error "\`-allow-undefined' must not be used because it is the default" ;; -avoid-version) avoid_version=yes continue ;; -bindir) prev=bindir continue ;; -dlopen) prev=dlfiles continue ;; -dlpreopen) prev=dlprefiles continue ;; -export-dynamic) export_dynamic=yes continue ;; -export-symbols | -export-symbols-regex) if test -n "$export_symbols" || test -n "$export_symbols_regex"; then func_fatal_error "more than one -exported-symbols argument is not allowed" fi if test "X$arg" = "X-export-symbols"; then prev=expsyms else prev=expsyms_regex fi continue ;; -framework) prev=framework continue ;; -inst-prefix-dir) prev=inst_prefix continue ;; # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:* # so, if we see these flags be careful not to treat them like -L -L[A-Z][A-Z]*:*) case $with_gcc/$host in no/*-*-irix* | /*-*-irix*) func_append compile_command " $arg" func_append finalize_command " $arg" ;; esac continue ;; -L*) func_stripname "-L" '' "$arg" if test -z "$func_stripname_result"; then if test "$#" -gt 0; then func_fatal_error "require no space between \`-L' and \`$1'" else func_fatal_error "need path for \`-L' option" fi fi func_resolve_sysroot "$func_stripname_result" dir=$func_resolve_sysroot_result # We need an absolute path. case $dir in [\\/]* | [A-Za-z]:[\\/]*) ;; *) absdir=`cd "$dir" && pwd` test -z "$absdir" && \ func_fatal_error "cannot determine absolute directory name of \`$dir'" dir="$absdir" ;; esac case "$deplibs " in *" -L$dir "* | *" $arg "*) # Will only happen for absolute or sysroot arguments ;; *) # Preserve sysroot, but never include relative directories case $dir in [\\/]* | [A-Za-z]:[\\/]* | =*) func_append deplibs " $arg" ;; *) func_append deplibs " -L$dir" ;; esac func_append lib_search_path " $dir" ;; esac case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'` case :$dllsearchpath: in *":$dir:"*) ;; ::) dllsearchpath=$dir;; *) func_append dllsearchpath ":$dir";; esac case :$dllsearchpath: in *":$testbindir:"*) ;; ::) dllsearchpath=$testbindir;; *) func_append dllsearchpath ":$testbindir";; esac ;; esac continue ;; -l*) if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*) # These systems don't actually have a C or math library (as such) continue ;; *-*-os2*) # These systems don't actually have a C library (as such) test "X$arg" = "X-lc" && continue ;; *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*) # Do not include libc due to us having libc/libc_r. test "X$arg" = "X-lc" && continue ;; *-*-rhapsody* | *-*-darwin1.[012]) # Rhapsody C and math libraries are in the System framework func_append deplibs " System.ltframework" continue ;; *-*-sco3.2v5* | *-*-sco5v6*) # Causes problems with __ctype test "X$arg" = "X-lc" && continue ;; *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*) # Compiler inserts libc in the correct place for threads to work test "X$arg" = "X-lc" && continue ;; esac elif test "X$arg" = "X-lc_r"; then case $host in *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*) # Do not include libc_r directly, use -pthread flag. continue ;; esac fi func_append deplibs " $arg" continue ;; -module) module=yes continue ;; # Tru64 UNIX uses -model [arg] to determine the layout of C++ # classes, name mangling, and exception handling. # Darwin uses the -arch flag to determine output architecture. -model|-arch|-isysroot|--sysroot) func_append compiler_flags " $arg" func_append compile_command " $arg" func_append finalize_command " $arg" prev=xcompiler continue ;; -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \ |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) func_append compiler_flags " $arg" func_append compile_command " $arg" func_append finalize_command " $arg" case "$new_inherited_linker_flags " in *" $arg "*) ;; * ) func_append new_inherited_linker_flags " $arg" ;; esac continue ;; -multi_module) single_module="${wl}-multi_module" continue ;; -no-fast-install) fast_install=no continue ;; -no-install) case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*) # The PATH hackery in wrapper scripts is required on Windows # and Darwin in order for the loader to find any dlls it needs. func_warning "\`-no-install' is ignored for $host" func_warning "assuming \`-no-fast-install' instead" fast_install=no ;; *) no_install=yes ;; esac continue ;; -no-undefined) allow_undefined=no continue ;; -objectlist) prev=objectlist continue ;; -o) prev=output ;; -precious-files-regex) prev=precious_regex continue ;; -release) prev=release continue ;; -rpath) prev=rpath continue ;; -R) prev=xrpath continue ;; -R*) func_stripname '-R' '' "$arg" dir=$func_stripname_result # We need an absolute path. case $dir in [\\/]* | [A-Za-z]:[\\/]*) ;; =*) func_stripname '=' '' "$dir" dir=$lt_sysroot$func_stripname_result ;; *) func_fatal_error "only absolute run-paths are allowed" ;; esac case "$xrpath " in *" $dir "*) ;; *) func_append xrpath " $dir" ;; esac continue ;; -shared) # The effects of -shared are defined in a previous loop. continue ;; -shrext) prev=shrext continue ;; -static | -static-libtool-libs) # The effects of -static are defined in a previous loop. # We used to do the same as -all-static on platforms that # didn't have a PIC flag, but the assumption that the effects # would be equivalent was wrong. It would break on at least # Digital Unix and AIX. continue ;; -thread-safe) thread_safe=yes continue ;; -version-info) prev=vinfo continue ;; -version-number) prev=vinfo vinfo_number=yes continue ;; -weak) prev=weak continue ;; -Wc,*) func_stripname '-Wc,' '' "$arg" args=$func_stripname_result arg= save_ifs="$IFS"; IFS=',' for flag in $args; do IFS="$save_ifs" func_quote_for_eval "$flag" func_append arg " $func_quote_for_eval_result" func_append compiler_flags " $func_quote_for_eval_result" done IFS="$save_ifs" func_stripname ' ' '' "$arg" arg=$func_stripname_result ;; -Wl,*) func_stripname '-Wl,' '' "$arg" args=$func_stripname_result arg= save_ifs="$IFS"; IFS=',' for flag in $args; do IFS="$save_ifs" func_quote_for_eval "$flag" func_append arg " $wl$func_quote_for_eval_result" func_append compiler_flags " $wl$func_quote_for_eval_result" func_append linker_flags " $func_quote_for_eval_result" done IFS="$save_ifs" func_stripname ' ' '' "$arg" arg=$func_stripname_result ;; -Xcompiler) prev=xcompiler continue ;; -Xlinker) prev=xlinker continue ;; -XCClinker) prev=xcclinker continue ;; # -msg_* for osf cc -msg_*) func_quote_for_eval "$arg" arg="$func_quote_for_eval_result" ;; # Flags to be passed through unchanged, with rationale: # -64, -mips[0-9] enable 64-bit mode for the SGI compiler # -r[0-9][0-9]* specify processor for the SGI compiler # -xarch=*, -xtarget=* enable 64-bit mode for the Sun compiler # +DA*, +DD* enable 64-bit mode for the HP compiler # -q* compiler args for the IBM compiler # -m*, -t[45]*, -txscale* architecture-specific flags for GCC # -F/path path to uninstalled frameworks, gcc on darwin # -p, -pg, --coverage, -fprofile-* profiling flags for GCC # @file GCC response files # -tp=* Portland pgcc target processor selection # --sysroot=* for sysroot support # -O*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \ -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \ -O*|-flto*|-fwhopr*|-fuse-linker-plugin) func_quote_for_eval "$arg" arg="$func_quote_for_eval_result" func_append compile_command " $arg" func_append finalize_command " $arg" func_append compiler_flags " $arg" continue ;; # Some other compiler flag. -* | +*) func_quote_for_eval "$arg" arg="$func_quote_for_eval_result" ;; *.$objext) # A standard object. func_append objs " $arg" ;; *.lo) # A libtool-controlled object. # Check to see that this really is a libtool object. if func_lalib_unsafe_p "$arg"; then pic_object= non_pic_object= # Read the .lo file func_source "$arg" if test -z "$pic_object" || test -z "$non_pic_object" || test "$pic_object" = none && test "$non_pic_object" = none; then func_fatal_error "cannot find name of object for \`$arg'" fi # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir="$func_dirname_result" if test "$pic_object" != none; then # Prepend the subdirectory the object is found in. pic_object="$xdir$pic_object" if test "$prev" = dlfiles; then if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then func_append dlfiles " $pic_object" prev= continue else # If libtool objects are unsupported, then we need to preload. prev=dlprefiles fi fi # CHECK ME: I think I busted this. -Ossama if test "$prev" = dlprefiles; then # Preload the old-style object. func_append dlprefiles " $pic_object" prev= fi # A PIC object. func_append libobjs " $pic_object" arg="$pic_object" fi # Non-PIC object. if test "$non_pic_object" != none; then # Prepend the subdirectory the object is found in. non_pic_object="$xdir$non_pic_object" # A standard non-PIC object func_append non_pic_objects " $non_pic_object" if test -z "$pic_object" || test "$pic_object" = none ; then arg="$non_pic_object" fi else # If the PIC object exists, use it instead. # $xdir was prepended to $pic_object above. non_pic_object="$pic_object" func_append non_pic_objects " $non_pic_object" fi else # Only an error if not doing a dry-run. if $opt_dry_run; then # Extract subdirectory from the argument. func_dirname "$arg" "/" "" xdir="$func_dirname_result" func_lo2o "$arg" pic_object=$xdir$objdir/$func_lo2o_result non_pic_object=$xdir$func_lo2o_result func_append libobjs " $pic_object" func_append non_pic_objects " $non_pic_object" else func_fatal_error "\`$arg' is not a valid libtool object" fi fi ;; *.$libext) # An archive. func_append deplibs " $arg" func_append old_deplibs " $arg" continue ;; *.la) # A libtool-controlled library. func_resolve_sysroot "$arg" if test "$prev" = dlfiles; then # This library was specified with -dlopen. func_append dlfiles " $func_resolve_sysroot_result" prev= elif test "$prev" = dlprefiles; then # The library was specified with -dlpreopen. func_append dlprefiles " $func_resolve_sysroot_result" prev= else func_append deplibs " $func_resolve_sysroot_result" fi continue ;; # Some other compiler argument. *) # Unknown arguments in both finalize_command and compile_command need # to be aesthetically quoted because they are evaled later. func_quote_for_eval "$arg" arg="$func_quote_for_eval_result" ;; esac # arg # Now actually substitute the argument into the commands. if test -n "$arg"; then func_append compile_command " $arg" func_append finalize_command " $arg" fi done # argument parsing loop test -n "$prev" && \ func_fatal_help "the \`$prevarg' option requires an argument" if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then eval arg=\"$export_dynamic_flag_spec\" func_append compile_command " $arg" func_append finalize_command " $arg" fi oldlibs= # calculate the name of the file, without its directory func_basename "$output" outputname="$func_basename_result" libobjs_save="$libobjs" if test -n "$shlibpath_var"; then # get the directories listed in $shlibpath_var eval shlib_search_path=\`\$ECHO \"\${$shlibpath_var}\" \| \$SED \'s/:/ /g\'\` else shlib_search_path= fi eval sys_lib_search_path=\"$sys_lib_search_path_spec\" eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\" func_dirname "$output" "/" "" output_objdir="$func_dirname_result$objdir" func_to_tool_file "$output_objdir/" tool_output_objdir=$func_to_tool_file_result # Create the object directory. func_mkdir_p "$output_objdir" # Determine the type of output case $output in "") func_fatal_help "you must specify an output file" ;; *.$libext) linkmode=oldlib ;; *.lo | *.$objext) linkmode=obj ;; *.la) linkmode=lib ;; *) linkmode=prog ;; # Anything else should be a program. esac specialdeplibs= libs= # Find all interdependent deplibs by searching for libraries # that are linked more than once (e.g. -la -lb -la) for deplib in $deplibs; do if $opt_preserve_dup_deps ; then case "$libs " in *" $deplib "*) func_append specialdeplibs " $deplib" ;; esac fi func_append libs " $deplib" done if test "$linkmode" = lib; then libs="$predeps $libs $compiler_lib_search_path $postdeps" # Compute libraries that are listed more than once in $predeps # $postdeps and mark them as special (i.e., whose duplicates are # not to be eliminated). pre_post_deps= if $opt_duplicate_compiler_generated_deps; then for pre_post_dep in $predeps $postdeps; do case "$pre_post_deps " in *" $pre_post_dep "*) func_append specialdeplibs " $pre_post_deps" ;; esac func_append pre_post_deps " $pre_post_dep" done fi pre_post_deps= fi deplibs= newdependency_libs= newlib_search_path= need_relink=no # whether we're linking any uninstalled libtool libraries notinst_deplibs= # not-installed libtool libraries notinst_path= # paths that contain not-installed libtool libraries case $linkmode in lib) passes="conv dlpreopen link" for file in $dlfiles $dlprefiles; do case $file in *.la) ;; *) func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file" ;; esac done ;; prog) compile_deplibs= finalize_deplibs= alldeplibs=no newdlfiles= newdlprefiles= passes="conv scan dlopen dlpreopen link" ;; *) passes="conv" ;; esac for pass in $passes; do # The preopen pass in lib mode reverses $deplibs; put it back here # so that -L comes before libs that need it for instance... if test "$linkmode,$pass" = "lib,link"; then ## FIXME: Find the place where the list is rebuilt in the wrong ## order, and fix it there properly tmp_deplibs= for deplib in $deplibs; do tmp_deplibs="$deplib $tmp_deplibs" done deplibs="$tmp_deplibs" fi if test "$linkmode,$pass" = "lib,link" || test "$linkmode,$pass" = "prog,scan"; then libs="$deplibs" deplibs= fi if test "$linkmode" = prog; then case $pass in dlopen) libs="$dlfiles" ;; dlpreopen) libs="$dlprefiles" ;; link) libs="$deplibs %DEPLIBS% $dependency_libs" ;; esac fi if test "$linkmode,$pass" = "lib,dlpreopen"; then # Collect and forward deplibs of preopened libtool libs for lib in $dlprefiles; do # Ignore non-libtool-libs dependency_libs= func_resolve_sysroot "$lib" case $lib in *.la) func_source "$func_resolve_sysroot_result" ;; esac # Collect preopened libtool deplibs, except any this library # has declared as weak libs for deplib in $dependency_libs; do func_basename "$deplib" deplib_base=$func_basename_result case " $weak_libs " in *" $deplib_base "*) ;; *) func_append deplibs " $deplib" ;; esac done done libs="$dlprefiles" fi if test "$pass" = dlopen; then # Collect dlpreopened libraries save_deplibs="$deplibs" deplibs= fi for deplib in $libs; do lib= found=no case $deplib in -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \ |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*) if test "$linkmode,$pass" = "prog,link"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else func_append compiler_flags " $deplib" if test "$linkmode" = lib ; then case "$new_inherited_linker_flags " in *" $deplib "*) ;; * ) func_append new_inherited_linker_flags " $deplib" ;; esac fi fi continue ;; -l*) if test "$linkmode" != lib && test "$linkmode" != prog; then func_warning "\`-l' is ignored for archives/objects" continue fi func_stripname '-l' '' "$deplib" name=$func_stripname_result if test "$linkmode" = lib; then searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path" else searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path" fi for searchdir in $searchdirs; do for search_ext in .la $std_shrext .so .a; do # Search the libtool library lib="$searchdir/lib${name}${search_ext}" if test -f "$lib"; then if test "$search_ext" = ".la"; then found=yes else found=no fi break 2 fi done done if test "$found" != yes; then # deplib doesn't seem to be a libtool library if test "$linkmode,$pass" = "prog,link"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else deplibs="$deplib $deplibs" test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs" fi continue else # deplib is a libtool library # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib, # We need to do some special things here, and not later. if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then case " $predeps $postdeps " in *" $deplib "*) if func_lalib_p "$lib"; then library_names= old_library= func_source "$lib" for l in $old_library $library_names; do ll="$l" done if test "X$ll" = "X$old_library" ; then # only static version available found=no func_dirname "$lib" "" "." ladir="$func_dirname_result" lib=$ladir/$old_library if test "$linkmode,$pass" = "prog,link"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else deplibs="$deplib $deplibs" test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs" fi continue fi fi ;; *) ;; esac fi fi ;; # -l *.ltframework) if test "$linkmode,$pass" = "prog,link"; then compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else deplibs="$deplib $deplibs" if test "$linkmode" = lib ; then case "$new_inherited_linker_flags " in *" $deplib "*) ;; * ) func_append new_inherited_linker_flags " $deplib" ;; esac fi fi continue ;; -L*) case $linkmode in lib) deplibs="$deplib $deplibs" test "$pass" = conv && continue newdependency_libs="$deplib $newdependency_libs" func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result" func_append newlib_search_path " $func_resolve_sysroot_result" ;; prog) if test "$pass" = conv; then deplibs="$deplib $deplibs" continue fi if test "$pass" = scan; then deplibs="$deplib $deplibs" else compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" fi func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result" func_append newlib_search_path " $func_resolve_sysroot_result" ;; *) func_warning "\`-L' is ignored for archives/objects" ;; esac # linkmode continue ;; # -L -R*) if test "$pass" = link; then func_stripname '-R' '' "$deplib" func_resolve_sysroot "$func_stripname_result" dir=$func_resolve_sysroot_result # Make sure the xrpath contains only unique directories. case "$xrpath " in *" $dir "*) ;; *) func_append xrpath " $dir" ;; esac fi deplibs="$deplib $deplibs" continue ;; *.la) func_resolve_sysroot "$deplib" lib=$func_resolve_sysroot_result ;; *.$libext) if test "$pass" = conv; then deplibs="$deplib $deplibs" continue fi case $linkmode in lib) # Linking convenience modules into shared libraries is allowed, # but linking other static libraries is non-portable. case " $dlpreconveniencelibs " in *" $deplib "*) ;; *) valid_a_lib=no case $deplibs_check_method in match_pattern*) set dummy $deplibs_check_method; shift match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"` if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \ | $EGREP "$match_pattern_regex" > /dev/null; then valid_a_lib=yes fi ;; pass_all) valid_a_lib=yes ;; esac if test "$valid_a_lib" != yes; then echo $ECHO "*** Warning: Trying to link with static lib archive $deplib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have" echo "*** because the file extensions .$libext of this argument makes me believe" echo "*** that it is just a static archive that I should not use here." else echo $ECHO "*** Warning: Linking the shared library $output against the" $ECHO "*** static library $deplib is not portable!" deplibs="$deplib $deplibs" fi ;; esac continue ;; prog) if test "$pass" != link; then deplibs="$deplib $deplibs" else compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" fi continue ;; esac # linkmode ;; # *.$libext *.lo | *.$objext) if test "$pass" = conv; then deplibs="$deplib $deplibs" elif test "$linkmode" = prog; then if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then # If there is no dlopen support or we're linking statically, # we need to preload. func_append newdlprefiles " $deplib" compile_deplibs="$deplib $compile_deplibs" finalize_deplibs="$deplib $finalize_deplibs" else func_append newdlfiles " $deplib" fi fi continue ;; %DEPLIBS%) alldeplibs=yes continue ;; esac # case $deplib if test "$found" = yes || test -f "$lib"; then : else func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'" fi # Check to see that this really is a libtool archive. func_lalib_unsafe_p "$lib" \ || func_fatal_error "\`$lib' is not a valid libtool archive" func_dirname "$lib" "" "." ladir="$func_dirname_result" dlname= dlopen= dlpreopen= libdir= library_names= old_library= inherited_linker_flags= # If the library was installed with an old release of libtool, # it will not redefine variables installed, or shouldnotlink installed=yes shouldnotlink=no avoidtemprpath= # Read the .la file func_source "$lib" # Convert "-framework foo" to "foo.ltframework" if test -n "$inherited_linker_flags"; then tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'` for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do case " $new_inherited_linker_flags " in *" $tmp_inherited_linker_flag "*) ;; *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";; esac done fi dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` if test "$linkmode,$pass" = "lib,link" || test "$linkmode,$pass" = "prog,scan" || { test "$linkmode" != prog && test "$linkmode" != lib; }; then test -n "$dlopen" && func_append dlfiles " $dlopen" test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen" fi if test "$pass" = conv; then # Only check for convenience libraries deplibs="$lib $deplibs" if test -z "$libdir"; then if test -z "$old_library"; then func_fatal_error "cannot find name of link library for \`$lib'" fi # It is a libtool convenience library, so add in its objects. func_append convenience " $ladir/$objdir/$old_library" func_append old_convenience " $ladir/$objdir/$old_library" elif test "$linkmode" != prog && test "$linkmode" != lib; then func_fatal_error "\`$lib' is not a convenience library" fi tmp_libs= for deplib in $dependency_libs; do deplibs="$deplib $deplibs" if $opt_preserve_dup_deps ; then case "$tmp_libs " in *" $deplib "*) func_append specialdeplibs " $deplib" ;; esac fi func_append tmp_libs " $deplib" done continue fi # $pass = conv # Get the name of the library we link against. linklib= if test -n "$old_library" && { test "$prefer_static_libs" = yes || test "$prefer_static_libs,$installed" = "built,no"; }; then linklib=$old_library else for l in $old_library $library_names; do linklib="$l" done fi if test -z "$linklib"; then func_fatal_error "cannot find name of link library for \`$lib'" fi # This library was specified with -dlopen. if test "$pass" = dlopen; then if test -z "$libdir"; then func_fatal_error "cannot -dlopen a convenience library: \`$lib'" fi if test -z "$dlname" || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then # If there is no dlname, no dlopen support or we're linking # statically, we need to preload. We also need to preload any # dependent libraries so libltdl's deplib preloader doesn't # bomb out in the load deplibs phase. func_append dlprefiles " $lib $dependency_libs" else func_append newdlfiles " $lib" fi continue fi # $pass = dlopen # We need an absolute path. case $ladir in [\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;; *) abs_ladir=`cd "$ladir" && pwd` if test -z "$abs_ladir"; then func_warning "cannot determine absolute directory name of \`$ladir'" func_warning "passing it literally to the linker, although it might fail" abs_ladir="$ladir" fi ;; esac func_basename "$lib" laname="$func_basename_result" # Find the relevant object directory and library name. if test "X$installed" = Xyes; then if test ! -f "$lt_sysroot$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then func_warning "library \`$lib' was moved." dir="$ladir" absdir="$abs_ladir" libdir="$abs_ladir" else dir="$lt_sysroot$libdir" absdir="$lt_sysroot$libdir" fi test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes else if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then dir="$ladir" absdir="$abs_ladir" # Remove this search path later func_append notinst_path " $abs_ladir" else dir="$ladir/$objdir" absdir="$abs_ladir/$objdir" # Remove this search path later func_append notinst_path " $abs_ladir" fi fi # $installed = yes func_stripname 'lib' '.la' "$laname" name=$func_stripname_result # This library was specified with -dlpreopen. if test "$pass" = dlpreopen; then if test -z "$libdir" && test "$linkmode" = prog; then func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'" fi case "$host" in # special handling for platforms with PE-DLLs. *cygwin* | *mingw* | *cegcc* ) # Linker will automatically link against shared library if both # static and shared are present. Therefore, ensure we extract # symbols from the import library if a shared library is present # (otherwise, the dlopen module name will be incorrect). We do # this by putting the import library name into $newdlprefiles. # We recover the dlopen module name by 'saving' the la file # name in a special purpose variable, and (later) extracting the # dlname from the la file. if test -n "$dlname"; then func_tr_sh "$dir/$linklib" eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname" func_append newdlprefiles " $dir/$linklib" else func_append newdlprefiles " $dir/$old_library" # Keep a list of preopened convenience libraries to check # that they are being used correctly in the link pass. test -z "$libdir" && \ func_append dlpreconveniencelibs " $dir/$old_library" fi ;; * ) # Prefer using a static library (so that no silly _DYNAMIC symbols # are required to link). if test -n "$old_library"; then func_append newdlprefiles " $dir/$old_library" # Keep a list of preopened convenience libraries to check # that they are being used correctly in the link pass. test -z "$libdir" && \ func_append dlpreconveniencelibs " $dir/$old_library" # Otherwise, use the dlname, so that lt_dlopen finds it. elif test -n "$dlname"; then func_append newdlprefiles " $dir/$dlname" else func_append newdlprefiles " $dir/$linklib" fi ;; esac fi # $pass = dlpreopen if test -z "$libdir"; then # Link the convenience library if test "$linkmode" = lib; then deplibs="$dir/$old_library $deplibs" elif test "$linkmode,$pass" = "prog,link"; then compile_deplibs="$dir/$old_library $compile_deplibs" finalize_deplibs="$dir/$old_library $finalize_deplibs" else deplibs="$lib $deplibs" # used for prog,scan pass fi continue fi if test "$linkmode" = prog && test "$pass" != link; then func_append newlib_search_path " $ladir" deplibs="$lib $deplibs" linkalldeplibs=no if test "$link_all_deplibs" != no || test -z "$library_names" || test "$build_libtool_libs" = no; then linkalldeplibs=yes fi tmp_libs= for deplib in $dependency_libs; do case $deplib in -L*) func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result" func_append newlib_search_path " $func_resolve_sysroot_result" ;; esac # Need to link against all dependency_libs? if test "$linkalldeplibs" = yes; then deplibs="$deplib $deplibs" else # Need to hardcode shared library paths # or/and link against static libraries newdependency_libs="$deplib $newdependency_libs" fi if $opt_preserve_dup_deps ; then case "$tmp_libs " in *" $deplib "*) func_append specialdeplibs " $deplib" ;; esac fi func_append tmp_libs " $deplib" done # for deplib continue fi # $linkmode = prog... if test "$linkmode,$pass" = "prog,link"; then if test -n "$library_names" && { { test "$prefer_static_libs" = no || test "$prefer_static_libs,$installed" = "built,yes"; } || test -z "$old_library"; }; then # We need to hardcode the library path if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then # Make sure the rpath contains only unique directories. case "$temp_rpath:" in *"$absdir:"*) ;; *) func_append temp_rpath "$absdir:" ;; esac fi # Hardcode the library path. # Skip directories that are in the system default run-time # search path. case " $sys_lib_dlsearch_path " in *" $absdir "*) ;; *) case "$compile_rpath " in *" $absdir "*) ;; *) func_append compile_rpath " $absdir" ;; esac ;; esac case " $sys_lib_dlsearch_path " in *" $libdir "*) ;; *) case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac ;; esac fi # $linkmode,$pass = prog,link... if test "$alldeplibs" = yes && { test "$deplibs_check_method" = pass_all || { test "$build_libtool_libs" = yes && test -n "$library_names"; }; }; then # We only need to search for static libraries continue fi fi link_static=no # Whether the deplib will be linked statically use_static_libs=$prefer_static_libs if test "$use_static_libs" = built && test "$installed" = yes; then use_static_libs=no fi if test -n "$library_names" && { test "$use_static_libs" = no || test -z "$old_library"; }; then case $host in *cygwin* | *mingw* | *cegcc*) # No point in relinking DLLs because paths are not encoded func_append notinst_deplibs " $lib" need_relink=no ;; *) if test "$installed" = no; then func_append notinst_deplibs " $lib" need_relink=yes fi ;; esac # This is a shared library # Warn about portability, can't link against -module's on some # systems (darwin). Don't bleat about dlopened modules though! dlopenmodule="" for dlpremoduletest in $dlprefiles; do if test "X$dlpremoduletest" = "X$lib"; then dlopenmodule="$dlpremoduletest" break fi done if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then echo if test "$linkmode" = prog; then $ECHO "*** Warning: Linking the executable $output against the loadable module" else $ECHO "*** Warning: Linking the shared library $output against the loadable module" fi $ECHO "*** $linklib is not portable!" fi if test "$linkmode" = lib && test "$hardcode_into_libs" = yes; then # Hardcode the library path. # Skip directories that are in the system default run-time # search path. case " $sys_lib_dlsearch_path " in *" $absdir "*) ;; *) case "$compile_rpath " in *" $absdir "*) ;; *) func_append compile_rpath " $absdir" ;; esac ;; esac case " $sys_lib_dlsearch_path " in *" $libdir "*) ;; *) case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac ;; esac fi if test -n "$old_archive_from_expsyms_cmds"; then # figure out the soname set dummy $library_names shift realname="$1" shift libname=`eval "\\$ECHO \"$libname_spec\""` # use dlname if we got it. it's perfectly good, no? if test -n "$dlname"; then soname="$dlname" elif test -n "$soname_spec"; then # bleh windows case $host in *cygwin* | mingw* | *cegcc*) func_arith $current - $age major=$func_arith_result versuffix="-$major" ;; esac eval soname=\"$soname_spec\" else soname="$realname" fi # Make a new name for the extract_expsyms_cmds to use soroot="$soname" func_basename "$soroot" soname="$func_basename_result" func_stripname 'lib' '.dll' "$soname" newlib=libimp-$func_stripname_result.a # If the library has no export list, then create one now if test -f "$output_objdir/$soname-def"; then : else func_verbose "extracting exported symbol list from \`$soname'" func_execute_cmds "$extract_expsyms_cmds" 'exit $?' fi # Create $newlib if test -f "$output_objdir/$newlib"; then :; else func_verbose "generating import library for \`$soname'" func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?' fi # make sure the library variables are pointing to the new library dir=$output_objdir linklib=$newlib fi # test -n "$old_archive_from_expsyms_cmds" if test "$linkmode" = prog || test "$opt_mode" != relink; then add_shlibpath= add_dir= add= lib_linked=yes case $hardcode_action in immediate | unsupported) if test "$hardcode_direct" = no; then add="$dir/$linklib" case $host in *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;; *-*-sysv4*uw2*) add_dir="-L$dir" ;; *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \ *-*-unixware7*) add_dir="-L$dir" ;; *-*-darwin* ) # if the lib is a (non-dlopened) module then we can not # link against it, someone is ignoring the earlier warnings if /usr/bin/file -L $add 2> /dev/null | $GREP ": [^:]* bundle" >/dev/null ; then if test "X$dlopenmodule" != "X$lib"; then $ECHO "*** Warning: lib $linklib is a module, not a shared library" if test -z "$old_library" ; then echo echo "*** And there doesn't seem to be a static archive available" echo "*** The link will probably fail, sorry" else add="$dir/$old_library" fi elif test -n "$old_library"; then add="$dir/$old_library" fi fi esac elif test "$hardcode_minus_L" = no; then case $host in *-*-sunos*) add_shlibpath="$dir" ;; esac add_dir="-L$dir" add="-l$name" elif test "$hardcode_shlibpath_var" = no; then add_shlibpath="$dir" add="-l$name" else lib_linked=no fi ;; relink) if test "$hardcode_direct" = yes && test "$hardcode_direct_absolute" = no; then add="$dir/$linklib" elif test "$hardcode_minus_L" = yes; then add_dir="-L$absdir" # Try looking first in the location we're being installed to. if test -n "$inst_prefix_dir"; then case $libdir in [\\/]*) func_append add_dir " -L$inst_prefix_dir$libdir" ;; esac fi add="-l$name" elif test "$hardcode_shlibpath_var" = yes; then add_shlibpath="$dir" add="-l$name" else lib_linked=no fi ;; *) lib_linked=no ;; esac if test "$lib_linked" != yes; then func_fatal_configuration "unsupported hardcode properties" fi if test -n "$add_shlibpath"; then case :$compile_shlibpath: in *":$add_shlibpath:"*) ;; *) func_append compile_shlibpath "$add_shlibpath:" ;; esac fi if test "$linkmode" = prog; then test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs" test -n "$add" && compile_deplibs="$add $compile_deplibs" else test -n "$add_dir" && deplibs="$add_dir $deplibs" test -n "$add" && deplibs="$add $deplibs" if test "$hardcode_direct" != yes && test "$hardcode_minus_L" != yes && test "$hardcode_shlibpath_var" = yes; then case :$finalize_shlibpath: in *":$libdir:"*) ;; *) func_append finalize_shlibpath "$libdir:" ;; esac fi fi fi if test "$linkmode" = prog || test "$opt_mode" = relink; then add_shlibpath= add_dir= add= # Finalize command for both is simple: just hardcode it. if test "$hardcode_direct" = yes && test "$hardcode_direct_absolute" = no; then add="$libdir/$linklib" elif test "$hardcode_minus_L" = yes; then add_dir="-L$libdir" add="-l$name" elif test "$hardcode_shlibpath_var" = yes; then case :$finalize_shlibpath: in *":$libdir:"*) ;; *) func_append finalize_shlibpath "$libdir:" ;; esac add="-l$name" elif test "$hardcode_automatic" = yes; then if test -n "$inst_prefix_dir" && test -f "$inst_prefix_dir$libdir/$linklib" ; then add="$inst_prefix_dir$libdir/$linklib" else add="$libdir/$linklib" fi else # We cannot seem to hardcode it, guess we'll fake it. add_dir="-L$libdir" # Try looking first in the location we're being installed to. if test -n "$inst_prefix_dir"; then case $libdir in [\\/]*) func_append add_dir " -L$inst_prefix_dir$libdir" ;; esac fi add="-l$name" fi if test "$linkmode" = prog; then test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs" test -n "$add" && finalize_deplibs="$add $finalize_deplibs" else test -n "$add_dir" && deplibs="$add_dir $deplibs" test -n "$add" && deplibs="$add $deplibs" fi fi elif test "$linkmode" = prog; then # Here we assume that one of hardcode_direct or hardcode_minus_L # is not unsupported. This is valid on all known static and # shared platforms. if test "$hardcode_direct" != unsupported; then test -n "$old_library" && linklib="$old_library" compile_deplibs="$dir/$linklib $compile_deplibs" finalize_deplibs="$dir/$linklib $finalize_deplibs" else compile_deplibs="-l$name -L$dir $compile_deplibs" finalize_deplibs="-l$name -L$dir $finalize_deplibs" fi elif test "$build_libtool_libs" = yes; then # Not a shared library if test "$deplibs_check_method" != pass_all; then # We're trying link a shared library against a static one # but the system doesn't support it. # Just print a warning and add the library to dependency_libs so # that the program can be linked against the static library. echo $ECHO "*** Warning: This system can not link to static lib archive $lib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have." if test "$module" = yes; then echo "*** But as you try to build a module library, libtool will still create " echo "*** a static module, that should work as long as the dlopening application" echo "*** is linked with the -dlopen flag to resolve symbols at runtime." if test -z "$global_symbol_pipe"; then echo echo "*** However, this would only work if libtool was able to extract symbol" echo "*** lists from a program, using \`nm' or equivalent, but libtool could" echo "*** not find such a program. So, this module is probably useless." echo "*** \`nm' from GNU binutils and a full rebuild may help." fi if test "$build_old_libs" = no; then build_libtool_libs=module build_old_libs=yes else build_libtool_libs=no fi fi else deplibs="$dir/$old_library $deplibs" link_static=yes fi fi # link shared/static library? if test "$linkmode" = lib; then if test -n "$dependency_libs" && { test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes || test "$link_static" = yes; }; then # Extract -R from dependency_libs temp_deplibs= for libdir in $dependency_libs; do case $libdir in -R*) func_stripname '-R' '' "$libdir" temp_xrpath=$func_stripname_result case " $xrpath " in *" $temp_xrpath "*) ;; *) func_append xrpath " $temp_xrpath";; esac;; *) func_append temp_deplibs " $libdir";; esac done dependency_libs="$temp_deplibs" fi func_append newlib_search_path " $absdir" # Link against this library test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs" # ... and its dependency_libs tmp_libs= for deplib in $dependency_libs; do newdependency_libs="$deplib $newdependency_libs" case $deplib in -L*) func_stripname '-L' '' "$deplib" func_resolve_sysroot "$func_stripname_result";; *) func_resolve_sysroot "$deplib" ;; esac if $opt_preserve_dup_deps ; then case "$tmp_libs " in *" $func_resolve_sysroot_result "*) func_append specialdeplibs " $func_resolve_sysroot_result" ;; esac fi func_append tmp_libs " $func_resolve_sysroot_result" done if test "$link_all_deplibs" != no; then # Add the search paths of all dependency libraries for deplib in $dependency_libs; do path= case $deplib in -L*) path="$deplib" ;; *.la) func_resolve_sysroot "$deplib" deplib=$func_resolve_sysroot_result func_dirname "$deplib" "" "." dir=$func_dirname_result # We need an absolute path. case $dir in [\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;; *) absdir=`cd "$dir" && pwd` if test -z "$absdir"; then func_warning "cannot determine absolute directory name of \`$dir'" absdir="$dir" fi ;; esac if $GREP "^installed=no" $deplib > /dev/null; then case $host in *-*-darwin*) depdepl= eval deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib` if test -n "$deplibrary_names" ; then for tmp in $deplibrary_names ; do depdepl=$tmp done if test -f "$absdir/$objdir/$depdepl" ; then depdepl="$absdir/$objdir/$depdepl" darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` if test -z "$darwin_install_name"; then darwin_install_name=`${OTOOL64} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'` fi func_append compiler_flags " ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}" func_append linker_flags " -dylib_file ${darwin_install_name}:${depdepl}" path= fi fi ;; *) path="-L$absdir/$objdir" ;; esac else eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib` test -z "$libdir" && \ func_fatal_error "\`$deplib' is not a valid libtool archive" test "$absdir" != "$libdir" && \ func_warning "\`$deplib' seems to be moved" path="-L$absdir" fi ;; esac case " $deplibs " in *" $path "*) ;; *) deplibs="$path $deplibs" ;; esac done fi # link_all_deplibs != no fi # linkmode = lib done # for deplib in $libs if test "$pass" = link; then if test "$linkmode" = "prog"; then compile_deplibs="$new_inherited_linker_flags $compile_deplibs" finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs" else compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` fi fi dependency_libs="$newdependency_libs" if test "$pass" = dlpreopen; then # Link the dlpreopened libraries before other libraries for deplib in $save_deplibs; do deplibs="$deplib $deplibs" done fi if test "$pass" != dlopen; then if test "$pass" != conv; then # Make sure lib_search_path contains only unique directories. lib_search_path= for dir in $newlib_search_path; do case "$lib_search_path " in *" $dir "*) ;; *) func_append lib_search_path " $dir" ;; esac done newlib_search_path= fi if test "$linkmode,$pass" != "prog,link"; then vars="deplibs" else vars="compile_deplibs finalize_deplibs" fi for var in $vars dependency_libs; do # Add libraries to $var in reverse order eval tmp_libs=\"\$$var\" new_libs= for deplib in $tmp_libs; do # FIXME: Pedantically, this is the right thing to do, so # that some nasty dependency loop isn't accidentally # broken: #new_libs="$deplib $new_libs" # Pragmatically, this seems to cause very few problems in # practice: case $deplib in -L*) new_libs="$deplib $new_libs" ;; -R*) ;; *) # And here is the reason: when a library appears more # than once as an explicit dependence of a library, or # is implicitly linked in more than once by the # compiler, it is considered special, and multiple # occurrences thereof are not removed. Compare this # with having the same library being listed as a # dependency of multiple other libraries: in this case, # we know (pedantically, we assume) the library does not # need to be listed more than once, so we keep only the # last copy. This is not always right, but it is rare # enough that we require users that really mean to play # such unportable linking tricks to link the library # using -Wl,-lname, so that libtool does not consider it # for duplicate removal. case " $specialdeplibs " in *" $deplib "*) new_libs="$deplib $new_libs" ;; *) case " $new_libs " in *" $deplib "*) ;; *) new_libs="$deplib $new_libs" ;; esac ;; esac ;; esac done tmp_libs= for deplib in $new_libs; do case $deplib in -L*) case " $tmp_libs " in *" $deplib "*) ;; *) func_append tmp_libs " $deplib" ;; esac ;; *) func_append tmp_libs " $deplib" ;; esac done eval $var=\"$tmp_libs\" done # for var fi # Last step: remove runtime libs from dependency_libs # (they stay in deplibs) tmp_libs= for i in $dependency_libs ; do case " $predeps $postdeps $compiler_lib_search_path " in *" $i "*) i="" ;; esac if test -n "$i" ; then func_append tmp_libs " $i" fi done dependency_libs=$tmp_libs done # for pass if test "$linkmode" = prog; then dlfiles="$newdlfiles" fi if test "$linkmode" = prog || test "$linkmode" = lib; then dlprefiles="$newdlprefiles" fi case $linkmode in oldlib) if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then func_warning "\`-dlopen' is ignored for archives" fi case " $deplibs" in *\ -l* | *\ -L*) func_warning "\`-l' and \`-L' are ignored for archives" ;; esac test -n "$rpath" && \ func_warning "\`-rpath' is ignored for archives" test -n "$xrpath" && \ func_warning "\`-R' is ignored for archives" test -n "$vinfo" && \ func_warning "\`-version-info/-version-number' is ignored for archives" test -n "$release" && \ func_warning "\`-release' is ignored for archives" test -n "$export_symbols$export_symbols_regex" && \ func_warning "\`-export-symbols' is ignored for archives" # Now set the variables for building old libraries. build_libtool_libs=no oldlibs="$output" func_append objs "$old_deplibs" ;; lib) # Make sure we only generate libraries of the form `libNAME.la'. case $outputname in lib*) func_stripname 'lib' '.la' "$outputname" name=$func_stripname_result eval shared_ext=\"$shrext_cmds\" eval libname=\"$libname_spec\" ;; *) test "$module" = no && \ func_fatal_help "libtool library \`$output' must begin with \`lib'" if test "$need_lib_prefix" != no; then # Add the "lib" prefix for modules if required func_stripname '' '.la' "$outputname" name=$func_stripname_result eval shared_ext=\"$shrext_cmds\" eval libname=\"$libname_spec\" else func_stripname '' '.la' "$outputname" libname=$func_stripname_result fi ;; esac if test -n "$objs"; then if test "$deplibs_check_method" != pass_all; then func_fatal_error "cannot build libtool library \`$output' from non-libtool objects on this host:$objs" else echo $ECHO "*** Warning: Linking the shared library $output against the non-libtool" $ECHO "*** objects $objs is not portable!" func_append libobjs " $objs" fi fi test "$dlself" != no && \ func_warning "\`-dlopen self' is ignored for libtool libraries" set dummy $rpath shift test "$#" -gt 1 && \ func_warning "ignoring multiple \`-rpath's for a libtool library" install_libdir="$1" oldlibs= if test -z "$rpath"; then if test "$build_libtool_libs" = yes; then # Building a libtool convenience library. # Some compilers have problems with a `.al' extension so # convenience libraries should have the same extension an # archive normally would. oldlibs="$output_objdir/$libname.$libext $oldlibs" build_libtool_libs=convenience build_old_libs=yes fi test -n "$vinfo" && \ func_warning "\`-version-info/-version-number' is ignored for convenience libraries" test -n "$release" && \ func_warning "\`-release' is ignored for convenience libraries" else # Parse the version information argument. save_ifs="$IFS"; IFS=':' set dummy $vinfo 0 0 0 shift IFS="$save_ifs" test -n "$7" && \ func_fatal_help "too many parameters to \`-version-info'" # convert absolute version numbers to libtool ages # this retains compatibility with .la files and attempts # to make the code below a bit more comprehensible case $vinfo_number in yes) number_major="$1" number_minor="$2" number_revision="$3" # # There are really only two kinds -- those that # use the current revision as the major version # and those that subtract age and use age as # a minor version. But, then there is irix # which has an extra 1 added just for fun # case $version_type in # correct linux to gnu/linux during the next big refactor darwin|linux|osf|windows|none) func_arith $number_major + $number_minor current=$func_arith_result age="$number_minor" revision="$number_revision" ;; freebsd-aout|freebsd-elf|qnx|sunos) current="$number_major" revision="$number_minor" age="0" ;; irix|nonstopux) func_arith $number_major + $number_minor current=$func_arith_result age="$number_minor" revision="$number_minor" lt_irix_increment=no ;; esac ;; no) current="$1" revision="$2" age="$3" ;; esac # Check that each of the things are valid numbers. case $current in 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; *) func_error "CURRENT \`$current' must be a nonnegative integer" func_fatal_error "\`$vinfo' is not valid version information" ;; esac case $revision in 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; *) func_error "REVISION \`$revision' must be a nonnegative integer" func_fatal_error "\`$vinfo' is not valid version information" ;; esac case $age in 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;; *) func_error "AGE \`$age' must be a nonnegative integer" func_fatal_error "\`$vinfo' is not valid version information" ;; esac if test "$age" -gt "$current"; then func_error "AGE \`$age' is greater than the current interface number \`$current'" func_fatal_error "\`$vinfo' is not valid version information" fi # Calculate the version variables. major= versuffix= verstring= case $version_type in none) ;; darwin) # Like Linux, but with the current version available in # verstring for coding it into the library header func_arith $current - $age major=.$func_arith_result versuffix="$major.$age.$revision" # Darwin ld doesn't like 0 for these options... func_arith $current + 1 minor_current=$func_arith_result xlcverstring="${wl}-compatibility_version ${wl}$minor_current ${wl}-current_version ${wl}$minor_current.$revision" verstring="-compatibility_version $minor_current -current_version $minor_current.$revision" ;; freebsd-aout) major=".$current" versuffix=".$current.$revision"; ;; freebsd-elf) major=".$current" versuffix=".$current" ;; irix | nonstopux) if test "X$lt_irix_increment" = "Xno"; then func_arith $current - $age else func_arith $current - $age + 1 fi major=$func_arith_result case $version_type in nonstopux) verstring_prefix=nonstopux ;; *) verstring_prefix=sgi ;; esac verstring="$verstring_prefix$major.$revision" # Add in all the interfaces that we are compatible with. loop=$revision while test "$loop" -ne 0; do func_arith $revision - $loop iface=$func_arith_result func_arith $loop - 1 loop=$func_arith_result verstring="$verstring_prefix$major.$iface:$verstring" done # Before this point, $major must not contain `.'. major=.$major versuffix="$major.$revision" ;; linux) # correct to gnu/linux during the next big refactor func_arith $current - $age major=.$func_arith_result versuffix="$major.$age.$revision" ;; osf) func_arith $current - $age major=.$func_arith_result versuffix=".$current.$age.$revision" verstring="$current.$age.$revision" # Add in all the interfaces that we are compatible with. loop=$age while test "$loop" -ne 0; do func_arith $current - $loop iface=$func_arith_result func_arith $loop - 1 loop=$func_arith_result verstring="$verstring:${iface}.0" done # Make executables depend on our current version. func_append verstring ":${current}.0" ;; qnx) major=".$current" versuffix=".$current" ;; sunos) major=".$current" versuffix=".$current.$revision" ;; windows) # Use '-' rather than '.', since we only want one # extension on DOS 8.3 filesystems. func_arith $current - $age major=$func_arith_result versuffix="-$major" ;; *) func_fatal_configuration "unknown library version type \`$version_type'" ;; esac # Clear the version info if we defaulted, and they specified a release. if test -z "$vinfo" && test -n "$release"; then major= case $version_type in darwin) # we can't check for "0.0" in archive_cmds due to quoting # problems, so we reset it completely verstring= ;; *) verstring="0.0" ;; esac if test "$need_version" = no; then versuffix= else versuffix=".0.0" fi fi # Remove version info from name if versioning should be avoided if test "$avoid_version" = yes && test "$need_version" = no; then major= versuffix= verstring="" fi # Check to see if the archive will have undefined symbols. if test "$allow_undefined" = yes; then if test "$allow_undefined_flag" = unsupported; then func_warning "undefined symbols not allowed in $host shared libraries" build_libtool_libs=no build_old_libs=yes fi else # Don't allow undefined symbols. allow_undefined_flag="$no_undefined_flag" fi fi func_generate_dlsyms "$libname" "$libname" "yes" func_append libobjs " $symfileobj" test "X$libobjs" = "X " && libobjs= if test "$opt_mode" != relink; then # Remove our outputs, but don't remove object files since they # may have been created when compiling PIC objects. removelist= tempremovelist=`$ECHO "$output_objdir/*"` for p in $tempremovelist; do case $p in *.$objext | *.gcno) ;; $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*) if test "X$precious_files_regex" != "X"; then if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1 then continue fi fi func_append removelist " $p" ;; *) ;; esac done test -n "$removelist" && \ func_show_eval "${RM}r \$removelist" fi # Now set the variables for building old libraries. if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then func_append oldlibs " $output_objdir/$libname.$libext" # Transform .lo files to .o files. oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; $lo2o" | $NL2SP` fi # Eliminate all temporary directories. #for path in $notinst_path; do # lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"` # deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"` # dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"` #done if test -n "$xrpath"; then # If the user specified any rpath flags, then add them. temp_xrpath= for libdir in $xrpath; do func_replace_sysroot "$libdir" func_append temp_xrpath " -R$func_replace_sysroot_result" case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac done if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then dependency_libs="$temp_xrpath $dependency_libs" fi fi # Make sure dlfiles contains only unique files that won't be dlpreopened old_dlfiles="$dlfiles" dlfiles= for lib in $old_dlfiles; do case " $dlprefiles $dlfiles " in *" $lib "*) ;; *) func_append dlfiles " $lib" ;; esac done # Make sure dlprefiles contains only unique files old_dlprefiles="$dlprefiles" dlprefiles= for lib in $old_dlprefiles; do case "$dlprefiles " in *" $lib "*) ;; *) func_append dlprefiles " $lib" ;; esac done if test "$build_libtool_libs" = yes; then if test -n "$rpath"; then case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*) # these systems don't actually have a c library (as such)! ;; *-*-rhapsody* | *-*-darwin1.[012]) # Rhapsody C library is in the System framework func_append deplibs " System.ltframework" ;; *-*-netbsd*) # Don't link with libc until the a.out ld.so is fixed. ;; *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*) # Do not include libc due to us having libc/libc_r. ;; *-*-sco3.2v5* | *-*-sco5v6*) # Causes problems with __ctype ;; *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*) # Compiler inserts libc in the correct place for threads to work ;; *) # Add libc to deplibs on all other systems if necessary. if test "$build_libtool_need_lc" = "yes"; then func_append deplibs " -lc" fi ;; esac fi # Transform deplibs into only deplibs that can be linked in shared. name_save=$name libname_save=$libname release_save=$release versuffix_save=$versuffix major_save=$major # I'm not sure if I'm treating the release correctly. I think # release should show up in the -l (ie -lgmp5) so we don't want to # add it in twice. Is that correct? release="" versuffix="" major="" newdeplibs= droppeddeps=no case $deplibs_check_method in pass_all) # Don't check for shared/static. Everything works. # This might be a little naive. We might want to check # whether the library exists or not. But this is on # osf3 & osf4 and I'm not really sure... Just # implementing what was already the behavior. newdeplibs=$deplibs ;; test_compile) # This code stresses the "libraries are programs" paradigm to its # limits. Maybe even breaks it. We compile a program, linking it # against the deplibs as a proxy for the library. Then we can check # whether they linked in statically or dynamically with ldd. $opt_dry_run || $RM conftest.c cat > conftest.c </dev/null` $nocaseglob else potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null` fi for potent_lib in $potential_libs; do # Follow soft links. if ls -lLd "$potent_lib" 2>/dev/null | $GREP " -> " >/dev/null; then continue fi # The statement above tries to avoid entering an # endless loop below, in case of cyclic links. # We might still enter an endless loop, since a link # loop can be closed while we follow links, # but so what? potlib="$potent_lib" while test -h "$potlib" 2>/dev/null; do potliblink=`ls -ld $potlib | ${SED} 's/.* -> //'` case $potliblink in [\\/]* | [A-Za-z]:[\\/]*) potlib="$potliblink";; *) potlib=`$ECHO "$potlib" | $SED 's,[^/]*$,,'`"$potliblink";; esac done if eval $file_magic_cmd \"\$potlib\" 2>/dev/null | $SED -e 10q | $EGREP "$file_magic_regex" > /dev/null; then func_append newdeplibs " $a_deplib" a_deplib="" break 2 fi done done fi if test -n "$a_deplib" ; then droppeddeps=yes echo $ECHO "*** Warning: linker path does not have real file for library $a_deplib." echo "*** I have the capability to make that library automatically link in when" echo "*** you link to this library. But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have" echo "*** because I did check the linker path looking for a file starting" if test -z "$potlib" ; then $ECHO "*** with $libname but no candidates were found. (...for file magic test)" else $ECHO "*** with $libname and none of the candidates passed a file format test" $ECHO "*** using a file magic. 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But I can only do this if you have a" echo "*** shared version of the library, which you do not appear to have" echo "*** because I did check the linker path looking for a file starting" if test -z "$potlib" ; then $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)" else $ECHO "*** with $libname and none of the candidates passed a file format test" $ECHO "*** using a regex pattern. Last file checked: $potlib" fi fi ;; *) # Add a -L argument. func_append newdeplibs " $a_deplib" ;; esac done # Gone through all deplibs. ;; none | unknown | *) newdeplibs="" tmp_deplibs=`$ECHO " $deplibs" | $SED 's/ -lc$//; s/ -[LR][^ ]*//g'` if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then for i in $predeps $postdeps ; do # can't use Xsed below, because $i might contain '/' tmp_deplibs=`$ECHO " $tmp_deplibs" | $SED "s,$i,,"` done fi case $tmp_deplibs in *[!\ \ ]*) echo if test "X$deplibs_check_method" = "Xnone"; then echo "*** Warning: inter-library dependencies are not supported in this platform." else echo "*** Warning: inter-library dependencies are not known to be supported." fi echo "*** All declared inter-library dependencies are being dropped." droppeddeps=yes ;; esac ;; esac versuffix=$versuffix_save major=$major_save release=$release_save libname=$libname_save name=$name_save case $host in *-*-rhapsody* | *-*-darwin1.[012]) # On Rhapsody replace the C library with the System framework newdeplibs=`$ECHO " $newdeplibs" | $SED 's/ -lc / System.ltframework /'` ;; esac if test "$droppeddeps" = yes; then if test "$module" = yes; then echo echo "*** Warning: libtool could not satisfy all declared inter-library" $ECHO "*** dependencies of module $libname. Therefore, libtool will create" echo "*** a static module, that should work as long as the dlopening" echo "*** application is linked with the -dlopen flag." if test -z "$global_symbol_pipe"; then echo echo "*** However, this would only work if libtool was able to extract symbol" echo "*** lists from a program, using \`nm' or equivalent, but libtool could" echo "*** not find such a program. So, this module is probably useless." echo "*** \`nm' from GNU binutils and a full rebuild may help." fi if test "$build_old_libs" = no; then oldlibs="$output_objdir/$libname.$libext" build_libtool_libs=module build_old_libs=yes else build_libtool_libs=no fi else echo "*** The inter-library dependencies that have been dropped here will be" echo "*** automatically added whenever a program is linked with this library" echo "*** or is declared to -dlopen it." if test "$allow_undefined" = no; then echo echo "*** Since this library must not contain undefined symbols," echo "*** because either the platform does not support them or" echo "*** it was explicitly requested with -no-undefined," echo "*** libtool will only create a static version of it." if test "$build_old_libs" = no; then oldlibs="$output_objdir/$libname.$libext" build_libtool_libs=module build_old_libs=yes else build_libtool_libs=no fi fi fi fi # Done checking deplibs! deplibs=$newdeplibs fi # Time to change all our "foo.ltframework" stuff back to "-framework foo" case $host in *-*-darwin*) newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` ;; esac # move library search paths that coincide with paths to not yet # installed libraries to the beginning of the library search list new_libs= for path in $notinst_path; do case " $new_libs " in *" -L$path/$objdir "*) ;; *) case " $deplibs " in *" -L$path/$objdir "*) func_append new_libs " -L$path/$objdir" ;; esac ;; esac done for deplib in $deplibs; do case $deplib in -L*) case " $new_libs " in *" $deplib "*) ;; *) func_append new_libs " $deplib" ;; esac ;; *) func_append new_libs " $deplib" ;; esac done deplibs="$new_libs" # All the library-specific variables (install_libdir is set above). library_names= old_library= dlname= # Test again, we may have decided not to build it any more if test "$build_libtool_libs" = yes; then # Remove ${wl} instances when linking with ld. # FIXME: should test the right _cmds variable. case $archive_cmds in *\$LD\ *) wl= ;; esac if test "$hardcode_into_libs" = yes; then # Hardcode the library paths hardcode_libdirs= dep_rpath= rpath="$finalize_rpath" test "$opt_mode" != relink && rpath="$compile_rpath$rpath" for libdir in $rpath; do if test -n "$hardcode_libdir_flag_spec"; then if test -n "$hardcode_libdir_separator"; then func_replace_sysroot "$libdir" libdir=$func_replace_sysroot_result if test -z "$hardcode_libdirs"; then hardcode_libdirs="$libdir" else # Just accumulate the unique libdirs. case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) ;; *) func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" ;; esac fi else eval flag=\"$hardcode_libdir_flag_spec\" func_append dep_rpath " $flag" fi elif test -n "$runpath_var"; then case "$perm_rpath " in *" $libdir "*) ;; *) func_append perm_rpath " $libdir" ;; esac fi done # Substitute the hardcoded libdirs into the rpath. if test -n "$hardcode_libdir_separator" && test -n "$hardcode_libdirs"; then libdir="$hardcode_libdirs" eval "dep_rpath=\"$hardcode_libdir_flag_spec\"" fi if test -n "$runpath_var" && test -n "$perm_rpath"; then # We should set the runpath_var. rpath= for dir in $perm_rpath; do func_append rpath "$dir:" done eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var" fi test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs" fi shlibpath="$finalize_shlibpath" test "$opt_mode" != relink && shlibpath="$compile_shlibpath$shlibpath" if test -n "$shlibpath"; then eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var" fi # Get the real and link names of the library. eval shared_ext=\"$shrext_cmds\" eval library_names=\"$library_names_spec\" set dummy $library_names shift realname="$1" shift if test -n "$soname_spec"; then eval soname=\"$soname_spec\" else soname="$realname" fi if test -z "$dlname"; then dlname=$soname fi lib="$output_objdir/$realname" linknames= for link do func_append linknames " $link" done # Use standard objects if they are pic test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP` test "X$libobjs" = "X " && libobjs= delfiles= if test -n "$export_symbols" && test -n "$include_expsyms"; then $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp" export_symbols="$output_objdir/$libname.uexp" func_append delfiles " $export_symbols" fi orig_export_symbols= case $host_os in cygwin* | mingw* | cegcc*) if test -n "$export_symbols" && test -z "$export_symbols_regex"; then # exporting using user supplied symfile if test "x`$SED 1q $export_symbols`" != xEXPORTS; then # and it's NOT already a .def file. Must figure out # which of the given symbols are data symbols and tag # them as such. So, trigger use of export_symbols_cmds. # export_symbols gets reassigned inside the "prepare # the list of exported symbols" if statement, so the # include_expsyms logic still works. orig_export_symbols="$export_symbols" export_symbols= always_export_symbols=yes fi fi ;; esac # Prepare the list of exported symbols if test -z "$export_symbols"; then if test "$always_export_symbols" = yes || test -n "$export_symbols_regex"; then func_verbose "generating symbol list for \`$libname.la'" export_symbols="$output_objdir/$libname.exp" $opt_dry_run || $RM $export_symbols cmds=$export_symbols_cmds save_ifs="$IFS"; IFS='~' for cmd1 in $cmds; do IFS="$save_ifs" # Take the normal branch if the nm_file_list_spec branch # doesn't work or if tool conversion is not needed. case $nm_file_list_spec~$to_tool_file_cmd in *~func_convert_file_noop | *~func_convert_file_msys_to_w32 | ~*) try_normal_branch=yes eval cmd=\"$cmd1\" func_len " $cmd" len=$func_len_result ;; *) try_normal_branch=no ;; esac if test "$try_normal_branch" = yes \ && { test "$len" -lt "$max_cmd_len" \ || test "$max_cmd_len" -le -1; } then func_show_eval "$cmd" 'exit $?' skipped_export=false elif test -n "$nm_file_list_spec"; then func_basename "$output" output_la=$func_basename_result save_libobjs=$libobjs save_output=$output output=${output_objdir}/${output_la}.nm func_to_tool_file "$output" libobjs=$nm_file_list_spec$func_to_tool_file_result func_append delfiles " $output" func_verbose "creating $NM input file list: $output" for obj in $save_libobjs; do func_to_tool_file "$obj" $ECHO "$func_to_tool_file_result" done > "$output" eval cmd=\"$cmd1\" func_show_eval "$cmd" 'exit $?' output=$save_output libobjs=$save_libobjs skipped_export=false else # The command line is too long to execute in one step. func_verbose "using reloadable object file for export list..." skipped_export=: # Break out early, otherwise skipped_export may be # set to false by a later but shorter cmd. break fi done IFS="$save_ifs" if test -n "$export_symbols_regex" && test "X$skipped_export" != "X:"; then func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' func_show_eval '$MV "${export_symbols}T" "$export_symbols"' fi fi fi if test -n "$export_symbols" && test -n "$include_expsyms"; then tmp_export_symbols="$export_symbols" test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols" $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' fi if test "X$skipped_export" != "X:" && test -n "$orig_export_symbols"; then # The given exports_symbols file has to be filtered, so filter it. func_verbose "filter symbol list for \`$libname.la' to tag DATA exports" # FIXME: $output_objdir/$libname.filter potentially contains lots of # 's' commands which not all seds can handle. GNU sed should be fine # though. Also, the filter scales superlinearly with the number of # global variables. join(1) would be nice here, but unfortunately # isn't a blessed tool. $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter func_append delfiles " $export_symbols $output_objdir/$libname.filter" export_symbols=$output_objdir/$libname.def $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols fi tmp_deplibs= for test_deplib in $deplibs; do case " $convenience " in *" $test_deplib "*) ;; *) func_append tmp_deplibs " $test_deplib" ;; esac done deplibs="$tmp_deplibs" if test -n "$convenience"; then if test -n "$whole_archive_flag_spec" && test "$compiler_needs_object" = yes && test -z "$libobjs"; then # extract the archives, so we have objects to list. # TODO: could optimize this to just extract one archive. whole_archive_flag_spec= fi if test -n "$whole_archive_flag_spec"; then save_libobjs=$libobjs eval libobjs=\"\$libobjs $whole_archive_flag_spec\" test "X$libobjs" = "X " && libobjs= else gentop="$output_objdir/${outputname}x" func_append generated " $gentop" func_extract_archives $gentop $convenience func_append libobjs " $func_extract_archives_result" test "X$libobjs" = "X " && libobjs= fi fi if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then eval flag=\"$thread_safe_flag_spec\" func_append linker_flags " $flag" fi # Make a backup of the uninstalled library when relinking if test "$opt_mode" = relink; then $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $? fi # Do each of the archive commands. if test "$module" = yes && test -n "$module_cmds" ; then if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then eval test_cmds=\"$module_expsym_cmds\" cmds=$module_expsym_cmds else eval test_cmds=\"$module_cmds\" cmds=$module_cmds fi else if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then eval test_cmds=\"$archive_expsym_cmds\" cmds=$archive_expsym_cmds else eval test_cmds=\"$archive_cmds\" cmds=$archive_cmds fi fi if test "X$skipped_export" != "X:" && func_len " $test_cmds" && len=$func_len_result && test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then : else # The command line is too long to link in one step, link piecewise # or, if using GNU ld and skipped_export is not :, use a linker # script. # Save the value of $output and $libobjs because we want to # use them later. If we have whole_archive_flag_spec, we # want to use save_libobjs as it was before # whole_archive_flag_spec was expanded, because we can't # assume the linker understands whole_archive_flag_spec. # This may have to be revisited, in case too many # convenience libraries get linked in and end up exceeding # the spec. if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then save_libobjs=$libobjs fi save_output=$output func_basename "$output" output_la=$func_basename_result # Clear the reloadable object creation command queue and # initialize k to one. test_cmds= concat_cmds= objlist= last_robj= k=1 if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then output=${output_objdir}/${output_la}.lnkscript func_verbose "creating GNU ld script: $output" echo 'INPUT (' > $output for obj in $save_libobjs do func_to_tool_file "$obj" $ECHO "$func_to_tool_file_result" >> $output done echo ')' >> $output func_append delfiles " $output" func_to_tool_file "$output" output=$func_to_tool_file_result elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then output=${output_objdir}/${output_la}.lnk func_verbose "creating linker input file list: $output" : > $output set x $save_libobjs shift firstobj= if test "$compiler_needs_object" = yes; then firstobj="$1 " shift fi for obj do func_to_tool_file "$obj" $ECHO "$func_to_tool_file_result" >> $output done func_append delfiles " $output" func_to_tool_file "$output" output=$firstobj\"$file_list_spec$func_to_tool_file_result\" else if test -n "$save_libobjs"; then func_verbose "creating reloadable object files..." output=$output_objdir/$output_la-${k}.$objext eval test_cmds=\"$reload_cmds\" func_len " $test_cmds" len0=$func_len_result len=$len0 # Loop over the list of objects to be linked. for obj in $save_libobjs do func_len " $obj" func_arith $len + $func_len_result len=$func_arith_result if test "X$objlist" = X || test "$len" -lt "$max_cmd_len"; then func_append objlist " $obj" else # The command $test_cmds is almost too long, add a # command to the queue. if test "$k" -eq 1 ; then # The first file doesn't have a previous command to add. reload_objs=$objlist eval concat_cmds=\"$reload_cmds\" else # All subsequent reloadable object files will link in # the last one created. reload_objs="$objlist $last_robj" eval concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\" fi last_robj=$output_objdir/$output_la-${k}.$objext func_arith $k + 1 k=$func_arith_result output=$output_objdir/$output_la-${k}.$objext objlist=" $obj" func_len " $last_robj" func_arith $len0 + $func_len_result len=$func_arith_result fi done # Handle the remaining objects by creating one last # reloadable object file. All subsequent reloadable object # files will link in the last one created. test -z "$concat_cmds" || concat_cmds=$concat_cmds~ reload_objs="$objlist $last_robj" eval concat_cmds=\"\${concat_cmds}$reload_cmds\" if test -n "$last_robj"; then eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\" fi func_append delfiles " $output" else output= fi if ${skipped_export-false}; then func_verbose "generating symbol list for \`$libname.la'" export_symbols="$output_objdir/$libname.exp" $opt_dry_run || $RM $export_symbols libobjs=$output # Append the command to create the export file. test -z "$concat_cmds" || concat_cmds=$concat_cmds~ eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\" if test -n "$last_robj"; then eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\" fi fi test -n "$save_libobjs" && func_verbose "creating a temporary reloadable object file: $output" # Loop through the commands generated above and execute them. save_ifs="$IFS"; IFS='~' for cmd in $concat_cmds; do IFS="$save_ifs" $opt_silent || { func_quote_for_expand "$cmd" eval "func_echo $func_quote_for_expand_result" } $opt_dry_run || eval "$cmd" || { lt_exit=$? # Restore the uninstalled library and exit if test "$opt_mode" = relink; then ( cd "$output_objdir" && \ $RM "${realname}T" && \ $MV "${realname}U" "$realname" ) fi exit $lt_exit } done IFS="$save_ifs" if test -n "$export_symbols_regex" && ${skipped_export-false}; then func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"' func_show_eval '$MV "${export_symbols}T" "$export_symbols"' fi fi if ${skipped_export-false}; then if test -n "$export_symbols" && test -n "$include_expsyms"; then tmp_export_symbols="$export_symbols" test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols" $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"' fi if test -n "$orig_export_symbols"; then # The given exports_symbols file has to be filtered, so filter it. func_verbose "filter symbol list for \`$libname.la' to tag DATA exports" # FIXME: $output_objdir/$libname.filter potentially contains lots of # 's' commands which not all seds can handle. GNU sed should be fine # though. Also, the filter scales superlinearly with the number of # global variables. join(1) would be nice here, but unfortunately # isn't a blessed tool. $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter func_append delfiles " $export_symbols $output_objdir/$libname.filter" export_symbols=$output_objdir/$libname.def $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols fi fi libobjs=$output # Restore the value of output. output=$save_output if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then eval libobjs=\"\$libobjs $whole_archive_flag_spec\" test "X$libobjs" = "X " && libobjs= fi # Expand the library linking commands again to reset the # value of $libobjs for piecewise linking. # Do each of the archive commands. if test "$module" = yes && test -n "$module_cmds" ; then if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then cmds=$module_expsym_cmds else cmds=$module_cmds fi else if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then cmds=$archive_expsym_cmds else cmds=$archive_cmds fi fi fi if test -n "$delfiles"; then # Append the command to remove temporary files to $cmds. eval cmds=\"\$cmds~\$RM $delfiles\" fi # Add any objects from preloaded convenience libraries if test -n "$dlprefiles"; then gentop="$output_objdir/${outputname}x" func_append generated " $gentop" func_extract_archives $gentop $dlprefiles func_append libobjs " $func_extract_archives_result" test "X$libobjs" = "X " && libobjs= fi save_ifs="$IFS"; IFS='~' for cmd in $cmds; do IFS="$save_ifs" eval cmd=\"$cmd\" $opt_silent || { func_quote_for_expand "$cmd" eval "func_echo $func_quote_for_expand_result" } $opt_dry_run || eval "$cmd" || { lt_exit=$? # Restore the uninstalled library and exit if test "$opt_mode" = relink; then ( cd "$output_objdir" && \ $RM "${realname}T" && \ $MV "${realname}U" "$realname" ) fi exit $lt_exit } done IFS="$save_ifs" # Restore the uninstalled library and exit if test "$opt_mode" = relink; then $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $? if test -n "$convenience"; then if test -z "$whole_archive_flag_spec"; then func_show_eval '${RM}r "$gentop"' fi fi exit $EXIT_SUCCESS fi # Create links to the real library. for linkname in $linknames; do if test "$realname" != "$linkname"; then func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?' fi done # If -module or -export-dynamic was specified, set the dlname. if test "$module" = yes || test "$export_dynamic" = yes; then # On all known operating systems, these are identical. dlname="$soname" fi fi ;; obj) if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then func_warning "\`-dlopen' is ignored for objects" fi case " $deplibs" in *\ -l* | *\ -L*) func_warning "\`-l' and \`-L' are ignored for objects" ;; esac test -n "$rpath" && \ func_warning "\`-rpath' is ignored for objects" test -n "$xrpath" && \ func_warning "\`-R' is ignored for objects" test -n "$vinfo" && \ func_warning "\`-version-info' is ignored for objects" test -n "$release" && \ func_warning "\`-release' is ignored for objects" case $output in *.lo) test -n "$objs$old_deplibs" && \ func_fatal_error "cannot build library object \`$output' from non-libtool objects" libobj=$output func_lo2o "$libobj" obj=$func_lo2o_result ;; *) libobj= obj="$output" ;; esac # Delete the old objects. $opt_dry_run || $RM $obj $libobj # Objects from convenience libraries. This assumes # single-version convenience libraries. Whenever we create # different ones for PIC/non-PIC, this we'll have to duplicate # the extraction. reload_conv_objs= gentop= # reload_cmds runs $LD directly, so let us get rid of # -Wl from whole_archive_flag_spec and hope we can get by with # turning comma into space.. wl= if test -n "$convenience"; then if test -n "$whole_archive_flag_spec"; then eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\" reload_conv_objs=$reload_objs\ `$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'` else gentop="$output_objdir/${obj}x" func_append generated " $gentop" func_extract_archives $gentop $convenience reload_conv_objs="$reload_objs $func_extract_archives_result" fi fi # If we're not building shared, we need to use non_pic_objs test "$build_libtool_libs" != yes && libobjs="$non_pic_objects" # Create the old-style object. reload_objs="$objs$old_deplibs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; /\.lib$/d; $lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test output="$obj" func_execute_cmds "$reload_cmds" 'exit $?' # Exit if we aren't doing a library object file. if test -z "$libobj"; then if test -n "$gentop"; then func_show_eval '${RM}r "$gentop"' fi exit $EXIT_SUCCESS fi if test "$build_libtool_libs" != yes; then if test -n "$gentop"; then func_show_eval '${RM}r "$gentop"' fi # Create an invalid libtool object if no PIC, so that we don't # accidentally link it into a program. # $show "echo timestamp > $libobj" # $opt_dry_run || eval "echo timestamp > $libobj" || exit $? exit $EXIT_SUCCESS fi if test -n "$pic_flag" || test "$pic_mode" != default; then # Only do commands if we really have different PIC objects. reload_objs="$libobjs $reload_conv_objs" output="$libobj" func_execute_cmds "$reload_cmds" 'exit $?' fi if test -n "$gentop"; then func_show_eval '${RM}r "$gentop"' fi exit $EXIT_SUCCESS ;; prog) case $host in *cygwin*) func_stripname '' '.exe' "$output" output=$func_stripname_result.exe;; esac test -n "$vinfo" && \ func_warning "\`-version-info' is ignored for programs" test -n "$release" && \ func_warning "\`-release' is ignored for programs" test "$preload" = yes \ && test "$dlopen_support" = unknown \ && test "$dlopen_self" = unknown \ && test "$dlopen_self_static" = unknown && \ func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support." case $host in *-*-rhapsody* | *-*-darwin1.[012]) # On Rhapsody replace the C library is the System framework compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'` finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'` ;; esac case $host in *-*-darwin*) # Don't allow lazy linking, it breaks C++ global constructors # But is supposedly fixed on 10.4 or later (yay!). if test "$tagname" = CXX ; then case ${MACOSX_DEPLOYMENT_TARGET-10.0} in 10.[0123]) func_append compile_command " ${wl}-bind_at_load" func_append finalize_command " ${wl}-bind_at_load" ;; esac fi # Time to change all our "foo.ltframework" stuff back to "-framework foo" compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'` ;; esac # move library search paths that coincide with paths to not yet # installed libraries to the beginning of the library search list new_libs= for path in $notinst_path; do case " $new_libs " in *" -L$path/$objdir "*) ;; *) case " $compile_deplibs " in *" -L$path/$objdir "*) func_append new_libs " -L$path/$objdir" ;; esac ;; esac done for deplib in $compile_deplibs; do case $deplib in -L*) case " $new_libs " in *" $deplib "*) ;; *) func_append new_libs " $deplib" ;; esac ;; *) func_append new_libs " $deplib" ;; esac done compile_deplibs="$new_libs" func_append compile_command " $compile_deplibs" func_append finalize_command " $finalize_deplibs" if test -n "$rpath$xrpath"; then # If the user specified any rpath flags, then add them. for libdir in $rpath $xrpath; do # This is the magic to use -rpath. case "$finalize_rpath " in *" $libdir "*) ;; *) func_append finalize_rpath " $libdir" ;; esac done fi # Now hardcode the library paths rpath= hardcode_libdirs= for libdir in $compile_rpath $finalize_rpath; do if test -n "$hardcode_libdir_flag_spec"; then if test -n "$hardcode_libdir_separator"; then if test -z "$hardcode_libdirs"; then hardcode_libdirs="$libdir" else # Just accumulate the unique libdirs. case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) ;; *) func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" ;; esac fi else eval flag=\"$hardcode_libdir_flag_spec\" func_append rpath " $flag" fi elif test -n "$runpath_var"; then case "$perm_rpath " in *" $libdir "*) ;; *) func_append perm_rpath " $libdir" ;; esac fi case $host in *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'` case :$dllsearchpath: in *":$libdir:"*) ;; ::) dllsearchpath=$libdir;; *) func_append dllsearchpath ":$libdir";; esac case :$dllsearchpath: in *":$testbindir:"*) ;; ::) dllsearchpath=$testbindir;; *) func_append dllsearchpath ":$testbindir";; esac ;; esac done # Substitute the hardcoded libdirs into the rpath. if test -n "$hardcode_libdir_separator" && test -n "$hardcode_libdirs"; then libdir="$hardcode_libdirs" eval rpath=\" $hardcode_libdir_flag_spec\" fi compile_rpath="$rpath" rpath= hardcode_libdirs= for libdir in $finalize_rpath; do if test -n "$hardcode_libdir_flag_spec"; then if test -n "$hardcode_libdir_separator"; then if test -z "$hardcode_libdirs"; then hardcode_libdirs="$libdir" else # Just accumulate the unique libdirs. case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*) ;; *) func_append hardcode_libdirs "$hardcode_libdir_separator$libdir" ;; esac fi else eval flag=\"$hardcode_libdir_flag_spec\" func_append rpath " $flag" fi elif test -n "$runpath_var"; then case "$finalize_perm_rpath " in *" $libdir "*) ;; *) func_append finalize_perm_rpath " $libdir" ;; esac fi done # Substitute the hardcoded libdirs into the rpath. if test -n "$hardcode_libdir_separator" && test -n "$hardcode_libdirs"; then libdir="$hardcode_libdirs" eval rpath=\" $hardcode_libdir_flag_spec\" fi finalize_rpath="$rpath" if test -n "$libobjs" && test "$build_old_libs" = yes; then # Transform all the library objects into standard objects. compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP` finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP` fi func_generate_dlsyms "$outputname" "@PROGRAM@" "no" # template prelinking step if test -n "$prelink_cmds"; then func_execute_cmds "$prelink_cmds" 'exit $?' fi wrappers_required=yes case $host in *cegcc* | *mingw32ce*) # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway. wrappers_required=no ;; *cygwin* | *mingw* ) if test "$build_libtool_libs" != yes; then wrappers_required=no fi ;; *) if test "$need_relink" = no || test "$build_libtool_libs" != yes; then wrappers_required=no fi ;; esac if test "$wrappers_required" = no; then # Replace the output file specification. compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'` link_command="$compile_command$compile_rpath" # We have no uninstalled library dependencies, so finalize right now. exit_status=0 func_show_eval "$link_command" 'exit_status=$?' if test -n "$postlink_cmds"; then func_to_tool_file "$output" postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` func_execute_cmds "$postlink_cmds" 'exit $?' fi # Delete the generated files. if test -f "$output_objdir/${outputname}S.${objext}"; then func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"' fi exit $exit_status fi if test -n "$compile_shlibpath$finalize_shlibpath"; then compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command" fi if test -n "$finalize_shlibpath"; then finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command" fi compile_var= finalize_var= if test -n "$runpath_var"; then if test -n "$perm_rpath"; then # We should set the runpath_var. rpath= for dir in $perm_rpath; do func_append rpath "$dir:" done compile_var="$runpath_var=\"$rpath\$$runpath_var\" " fi if test -n "$finalize_perm_rpath"; then # We should set the runpath_var. rpath= for dir in $finalize_perm_rpath; do func_append rpath "$dir:" done finalize_var="$runpath_var=\"$rpath\$$runpath_var\" " fi fi if test "$no_install" = yes; then # We don't need to create a wrapper script. link_command="$compile_var$compile_command$compile_rpath" # Replace the output file specification. link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'` # Delete the old output file. $opt_dry_run || $RM $output # Link the executable and exit func_show_eval "$link_command" 'exit $?' if test -n "$postlink_cmds"; then func_to_tool_file "$output" postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` func_execute_cmds "$postlink_cmds" 'exit $?' fi exit $EXIT_SUCCESS fi if test "$hardcode_action" = relink; then # Fast installation is not supported link_command="$compile_var$compile_command$compile_rpath" relink_command="$finalize_var$finalize_command$finalize_rpath" func_warning "this platform does not like uninstalled shared libraries" func_warning "\`$output' will be relinked during installation" else if test "$fast_install" != no; then link_command="$finalize_var$compile_command$finalize_rpath" if test "$fast_install" = yes; then relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'` else # fast_install is set to needless relink_command= fi else link_command="$compile_var$compile_command$compile_rpath" relink_command="$finalize_var$finalize_command$finalize_rpath" fi fi # Replace the output file specification. link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'` # Delete the old output files. $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname func_show_eval "$link_command" 'exit $?' if test -n "$postlink_cmds"; then func_to_tool_file "$output_objdir/$outputname" postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'` func_execute_cmds "$postlink_cmds" 'exit $?' fi # Now create the wrapper script. func_verbose "creating $output" # Quote the relink command for shipping. if test -n "$relink_command"; then # Preserve any variables that may affect compiler behavior for var in $variables_saved_for_relink; do if eval test -z \"\${$var+set}\"; then relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command" elif eval var_value=\$$var; test -z "$var_value"; then relink_command="$var=; export $var; $relink_command" else func_quote_for_eval "$var_value" relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command" fi done relink_command="(cd `pwd`; $relink_command)" relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"` fi # Only actually do things if not in dry run mode. $opt_dry_run || { # win32 will think the script is a binary if it has # a .exe suffix, so we strip it off here. case $output in *.exe) func_stripname '' '.exe' "$output" output=$func_stripname_result ;; esac # test for cygwin because mv fails w/o .exe extensions case $host in *cygwin*) exeext=.exe func_stripname '' '.exe' "$outputname" outputname=$func_stripname_result ;; *) exeext= ;; esac case $host in *cygwin* | *mingw* ) func_dirname_and_basename "$output" "" "." output_name=$func_basename_result output_path=$func_dirname_result cwrappersource="$output_path/$objdir/lt-$output_name.c" cwrapper="$output_path/$output_name.exe" $RM $cwrappersource $cwrapper trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15 func_emit_cwrapperexe_src > $cwrappersource # The wrapper executable is built using the $host compiler, # because it contains $host paths and files. 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then eval exec "$exec_cmd" exit $EXIT_FAILURE fi exit $exit_status # The TAGs below are defined such that we never get into a situation # in which we disable both kinds of libraries. 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Lane. * Modified 2006-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains Huffman entropy encoding routines. * Both sequential and progressive modes are supported in this single module. * * Much of the complexity here has to do with supporting output suspension. * If the data destination module demands suspension, we want to be able to * back up to the start of the current MCU. To do this, we copy state * variables into local working storage, and update them back to the * permanent JPEG objects only upon successful completion of an MCU. * * We do not support output suspension for the progressive JPEG mode, since * the library currently does not allow multiple-scan files to be written * with output suspension. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* The legal range of a DCT coefficient is * -1024 .. +1023 for 8-bit data; * -16384 .. +16383 for 12-bit data. * Hence the magnitude should always fit in 10 or 14 bits respectively. */ #if BITS_IN_JSAMPLE == 8 #define MAX_COEF_BITS 10 #else #define MAX_COEF_BITS 14 #endif /* Derived data constructed for each Huffman table */ typedef struct { unsigned int ehufco[256]; /* code for each symbol */ char ehufsi[256]; /* length of code for each symbol */ /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */ } c_derived_tbl; /* Expanded entropy encoder object for Huffman encoding. * * The savable_state subrecord contains fields that change within an MCU, * but must not be updated permanently until we complete the MCU. */ typedef struct { INT32 put_buffer; /* current bit-accumulation buffer */ int put_bits; /* # of bits now in it */ int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ } savable_state; /* This macro is to work around compilers with missing or broken * structure assignment. You'll need to fix this code if you have * such a compiler and you change MAX_COMPS_IN_SCAN. */ #ifndef NO_STRUCT_ASSIGN #define ASSIGN_STATE(dest,src) ((dest) = (src)) #else #if MAX_COMPS_IN_SCAN == 4 #define ASSIGN_STATE(dest,src) \ ((dest).put_buffer = (src).put_buffer, \ (dest).put_bits = (src).put_bits, \ (dest).last_dc_val[0] = (src).last_dc_val[0], \ (dest).last_dc_val[1] = (src).last_dc_val[1], \ (dest).last_dc_val[2] = (src).last_dc_val[2], \ (dest).last_dc_val[3] = (src).last_dc_val[3]) #endif #endif typedef struct { struct jpeg_entropy_encoder pub; /* public fields */ savable_state saved; /* Bit buffer & DC state at start of MCU */ /* These fields are NOT loaded into local working state. */ unsigned int restarts_to_go; /* MCUs left in this restart interval */ int next_restart_num; /* next restart number to write (0-7) */ /* Pointers to derived tables (these workspaces have image lifespan) */ c_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS]; c_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS]; /* Statistics tables for optimization */ long * dc_count_ptrs[NUM_HUFF_TBLS]; long * ac_count_ptrs[NUM_HUFF_TBLS]; /* Following fields used only in progressive mode */ /* Mode flag: TRUE for optimization, FALSE for actual data output */ boolean gather_statistics; /* next_output_byte/free_in_buffer are local copies of cinfo->dest fields. */ JOCTET * next_output_byte; /* => next byte to write in buffer */ size_t free_in_buffer; /* # of byte spaces remaining in buffer */ j_compress_ptr cinfo; /* link to cinfo (needed for dump_buffer) */ /* Coding status for AC components */ int ac_tbl_no; /* the table number of the single component */ unsigned int EOBRUN; /* run length of EOBs */ unsigned int BE; /* # of buffered correction bits before MCU */ char * bit_buffer; /* buffer for correction bits (1 per char) */ /* packing correction bits tightly would save some space but cost time... */ } huff_entropy_encoder; typedef huff_entropy_encoder * huff_entropy_ptr; /* Working state while writing an MCU (sequential mode). * This struct contains all the fields that are needed by subroutines. */ typedef struct { JOCTET * next_output_byte; /* => next byte to write in buffer */ size_t free_in_buffer; /* # of byte spaces remaining in buffer */ savable_state cur; /* Current bit buffer & DC state */ j_compress_ptr cinfo; /* dump_buffer needs access to this */ } working_state; /* MAX_CORR_BITS is the number of bits the AC refinement correction-bit * buffer can hold. Larger sizes may slightly improve compression, but * 1000 is already well into the realm of overkill. * The minimum safe size is 64 bits. */ #define MAX_CORR_BITS 1000 /* Max # of correction bits I can buffer */ /* IRIGHT_SHIFT is like RIGHT_SHIFT, but works on int rather than INT32. * We assume that int right shift is unsigned if INT32 right shift is, * which should be safe. */ #ifdef RIGHT_SHIFT_IS_UNSIGNED #define ISHIFT_TEMPS int ishift_temp; #define IRIGHT_SHIFT(x,shft) \ ((ishift_temp = (x)) < 0 ? \ (ishift_temp >> (shft)) | ((~0) << (16-(shft))) : \ (ishift_temp >> (shft))) #else #define ISHIFT_TEMPS #define IRIGHT_SHIFT(x,shft) ((x) >> (shft)) #endif /* * Compute the derived values for a Huffman table. * This routine also performs some validation checks on the table. */ LOCAL(void) jpeg_make_c_derived_tbl (j_compress_ptr cinfo, boolean isDC, int tblno, c_derived_tbl ** pdtbl) { JHUFF_TBL *htbl; c_derived_tbl *dtbl; int p, i, l, lastp, si, maxsymbol; char huffsize[257]; unsigned int huffcode[257]; unsigned int code; /* Note that huffsize[] and huffcode[] are filled in code-length order, * paralleling the order of the symbols themselves in htbl->huffval[]. */ /* Find the input Huffman table */ if (tblno < 0 || tblno >= NUM_HUFF_TBLS) ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); htbl = isDC ? cinfo->dc_huff_tbl_ptrs[tblno] : cinfo->ac_huff_tbl_ptrs[tblno]; if (htbl == NULL) ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); /* Allocate a workspace if we haven't already done so. */ if (*pdtbl == NULL) *pdtbl = (c_derived_tbl *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(c_derived_tbl)); dtbl = *pdtbl; /* Figure C.1: make table of Huffman code length for each symbol */ p = 0; for (l = 1; l <= 16; l++) { i = (int) htbl->bits[l]; if (i < 0 || p + i > 256) /* protect against table overrun */ ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); while (i--) huffsize[p++] = (char) l; } huffsize[p] = 0; lastp = p; /* Figure C.2: generate the codes themselves */ /* We also validate that the counts represent a legal Huffman code tree. */ code = 0; si = huffsize[0]; p = 0; while (huffsize[p]) { while (((int) huffsize[p]) == si) { huffcode[p++] = code; code++; } /* code is now 1 more than the last code used for codelength si; but * it must still fit in si bits, since no code is allowed to be all ones. */ if (((INT32) code) >= (((INT32) 1) << si)) ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); code <<= 1; si++; } /* Figure C.3: generate encoding tables */ /* These are code and size indexed by symbol value */ /* Set all codeless symbols to have code length 0; * this lets us detect duplicate VAL entries here, and later * allows emit_bits to detect any attempt to emit such symbols. */ MEMZERO(dtbl->ehufsi, SIZEOF(dtbl->ehufsi)); /* This is also a convenient place to check for out-of-range * and duplicated VAL entries. We allow 0..255 for AC symbols * but only 0..15 for DC. (We could constrain them further * based on data depth and mode, but this seems enough.) */ maxsymbol = isDC ? 15 : 255; for (p = 0; p < lastp; p++) { i = htbl->huffval[p]; if (i < 0 || i > maxsymbol || dtbl->ehufsi[i]) ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); dtbl->ehufco[i] = huffcode[p]; dtbl->ehufsi[i] = huffsize[p]; } } /* Outputting bytes to the file. * NB: these must be called only when actually outputting, * that is, entropy->gather_statistics == FALSE. */ /* Emit a byte, taking 'action' if must suspend. */ #define emit_byte_s(state,val,action) \ { *(state)->next_output_byte++ = (JOCTET) (val); \ if (--(state)->free_in_buffer == 0) \ if (! dump_buffer_s(state)) \ { action; } } /* Emit a byte */ #define emit_byte_e(entropy,val) \ { *(entropy)->next_output_byte++ = (JOCTET) (val); \ if (--(entropy)->free_in_buffer == 0) \ dump_buffer_e(entropy); } LOCAL(boolean) dump_buffer_s (working_state * state) /* Empty the output buffer; return TRUE if successful, FALSE if must suspend */ { struct jpeg_destination_mgr * dest = state->cinfo->dest; if (! (*dest->empty_output_buffer) (state->cinfo)) return FALSE; /* After a successful buffer dump, must reset buffer pointers */ state->next_output_byte = dest->next_output_byte; state->free_in_buffer = dest->free_in_buffer; return TRUE; } LOCAL(void) dump_buffer_e (huff_entropy_ptr entropy) /* Empty the output buffer; we do not support suspension in this case. */ { struct jpeg_destination_mgr * dest = entropy->cinfo->dest; if (! (*dest->empty_output_buffer) (entropy->cinfo)) ERREXIT(entropy->cinfo, JERR_CANT_SUSPEND); /* After a successful buffer dump, must reset buffer pointers */ entropy->next_output_byte = dest->next_output_byte; entropy->free_in_buffer = dest->free_in_buffer; } /* Outputting bits to the file */ /* Only the right 24 bits of put_buffer are used; the valid bits are * left-justified in this part. At most 16 bits can be passed to emit_bits * in one call, and we never retain more than 7 bits in put_buffer * between calls, so 24 bits are sufficient. */ INLINE LOCAL(boolean) emit_bits_s (working_state * state, unsigned int code, int size) /* Emit some bits; return TRUE if successful, FALSE if must suspend */ { /* This routine is heavily used, so it's worth coding tightly. */ register INT32 put_buffer = (INT32) code; register int put_bits = state->cur.put_bits; /* if size is 0, caller used an invalid Huffman table entry */ if (size == 0) ERREXIT(state->cinfo, JERR_HUFF_MISSING_CODE); put_buffer &= (((INT32) 1)<cur.put_buffer; /* and merge with old buffer contents */ while (put_bits >= 8) { int c = (int) ((put_buffer >> 16) & 0xFF); emit_byte_s(state, c, return FALSE); if (c == 0xFF) { /* need to stuff a zero byte? */ emit_byte_s(state, 0, return FALSE); } put_buffer <<= 8; put_bits -= 8; } state->cur.put_buffer = put_buffer; /* update state variables */ state->cur.put_bits = put_bits; return TRUE; } INLINE LOCAL(void) emit_bits_e (huff_entropy_ptr entropy, unsigned int code, int size) /* Emit some bits, unless we are in gather mode */ { /* This routine is heavily used, so it's worth coding tightly. */ register INT32 put_buffer = (INT32) code; register int put_bits = entropy->saved.put_bits; /* if size is 0, caller used an invalid Huffman table entry */ if (size == 0) ERREXIT(entropy->cinfo, JERR_HUFF_MISSING_CODE); if (entropy->gather_statistics) return; /* do nothing if we're only getting stats */ put_buffer &= (((INT32) 1)<saved.put_buffer; while (put_bits >= 8) { int c = (int) ((put_buffer >> 16) & 0xFF); emit_byte_e(entropy, c); if (c == 0xFF) { /* need to stuff a zero byte? */ emit_byte_e(entropy, 0); } put_buffer <<= 8; put_bits -= 8; } entropy->saved.put_buffer = put_buffer; /* update variables */ entropy->saved.put_bits = put_bits; } LOCAL(boolean) flush_bits_s (working_state * state) { if (! emit_bits_s(state, 0x7F, 7)) /* fill any partial byte with ones */ return FALSE; state->cur.put_buffer = 0; /* and reset bit-buffer to empty */ state->cur.put_bits = 0; return TRUE; } LOCAL(void) flush_bits_e (huff_entropy_ptr entropy) { emit_bits_e(entropy, 0x7F, 7); /* fill any partial byte with ones */ entropy->saved.put_buffer = 0; /* and reset bit-buffer to empty */ entropy->saved.put_bits = 0; } /* * Emit (or just count) a Huffman symbol. */ INLINE LOCAL(void) emit_dc_symbol (huff_entropy_ptr entropy, int tbl_no, int symbol) { if (entropy->gather_statistics) entropy->dc_count_ptrs[tbl_no][symbol]++; else { c_derived_tbl * tbl = entropy->dc_derived_tbls[tbl_no]; emit_bits_e(entropy, tbl->ehufco[symbol], tbl->ehufsi[symbol]); } } INLINE LOCAL(void) emit_ac_symbol (huff_entropy_ptr entropy, int tbl_no, int symbol) { if (entropy->gather_statistics) entropy->ac_count_ptrs[tbl_no][symbol]++; else { c_derived_tbl * tbl = entropy->ac_derived_tbls[tbl_no]; emit_bits_e(entropy, tbl->ehufco[symbol], tbl->ehufsi[symbol]); } } /* * Emit bits from a correction bit buffer. */ LOCAL(void) emit_buffered_bits (huff_entropy_ptr entropy, char * bufstart, unsigned int nbits) { if (entropy->gather_statistics) return; /* no real work */ while (nbits > 0) { emit_bits_e(entropy, (unsigned int) (*bufstart), 1); bufstart++; nbits--; } } /* * Emit any pending EOBRUN symbol. */ LOCAL(void) emit_eobrun (huff_entropy_ptr entropy) { register int temp, nbits; if (entropy->EOBRUN > 0) { /* if there is any pending EOBRUN */ temp = entropy->EOBRUN; nbits = 0; while ((temp >>= 1)) nbits++; /* safety check: shouldn't happen given limited correction-bit buffer */ if (nbits > 14) ERREXIT(entropy->cinfo, JERR_HUFF_MISSING_CODE); emit_ac_symbol(entropy, entropy->ac_tbl_no, nbits << 4); if (nbits) emit_bits_e(entropy, entropy->EOBRUN, nbits); entropy->EOBRUN = 0; /* Emit any buffered correction bits */ emit_buffered_bits(entropy, entropy->bit_buffer, entropy->BE); entropy->BE = 0; } } /* * Emit a restart marker & resynchronize predictions. */ LOCAL(boolean) emit_restart_s (working_state * state, int restart_num) { int ci; if (! flush_bits_s(state)) return FALSE; emit_byte_s(state, 0xFF, return FALSE); emit_byte_s(state, JPEG_RST0 + restart_num, return FALSE); /* Re-initialize DC predictions to 0 */ for (ci = 0; ci < state->cinfo->comps_in_scan; ci++) state->cur.last_dc_val[ci] = 0; /* The restart counter is not updated until we successfully write the MCU. */ return TRUE; } LOCAL(void) emit_restart_e (huff_entropy_ptr entropy, int restart_num) { int ci; emit_eobrun(entropy); if (! entropy->gather_statistics) { flush_bits_e(entropy); emit_byte_e(entropy, 0xFF); emit_byte_e(entropy, JPEG_RST0 + restart_num); } if (entropy->cinfo->Ss == 0) { /* Re-initialize DC predictions to 0 */ for (ci = 0; ci < entropy->cinfo->comps_in_scan; ci++) entropy->saved.last_dc_val[ci] = 0; } else { /* Re-initialize all AC-related fields to 0 */ entropy->EOBRUN = 0; entropy->BE = 0; } } /* * MCU encoding for DC initial scan (either spectral selection, * or first pass of successive approximation). */ METHODDEF(boolean) encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; register int temp, temp2; register int nbits; int blkn, ci; int Al = cinfo->Al; JBLOCKROW block; jpeg_component_info * compptr; ISHIFT_TEMPS entropy->next_output_byte = cinfo->dest->next_output_byte; entropy->free_in_buffer = cinfo->dest->free_in_buffer; /* Emit restart marker if needed */ if (cinfo->restart_interval) if (entropy->restarts_to_go == 0) emit_restart_e(entropy, entropy->next_restart_num); /* Encode the MCU data blocks */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { block = MCU_data[blkn]; ci = cinfo->MCU_membership[blkn]; compptr = cinfo->cur_comp_info[ci]; /* Compute the DC value after the required point transform by Al. * This is simply an arithmetic right shift. */ temp2 = IRIGHT_SHIFT((int) ((*block)[0]), Al); /* DC differences are figured on the point-transformed values. */ temp = temp2 - entropy->saved.last_dc_val[ci]; entropy->saved.last_dc_val[ci] = temp2; /* Encode the DC coefficient difference per section G.1.2.1 */ temp2 = temp; if (temp < 0) { temp = -temp; /* temp is abs value of input */ /* For a negative input, want temp2 = bitwise complement of abs(input) */ /* This code assumes we are on a two's complement machine */ temp2--; } /* Find the number of bits needed for the magnitude of the coefficient */ nbits = 0; while (temp) { nbits++; temp >>= 1; } /* Check for out-of-range coefficient values. * Since we're encoding a difference, the range limit is twice as much. */ if (nbits > MAX_COEF_BITS+1) ERREXIT(cinfo, JERR_BAD_DCT_COEF); /* Count/emit the Huffman-coded symbol for the number of bits */ emit_dc_symbol(entropy, compptr->dc_tbl_no, nbits); /* Emit that number of bits of the value, if positive, */ /* or the complement of its magnitude, if negative. */ if (nbits) /* emit_bits rejects calls with size 0 */ emit_bits_e(entropy, (unsigned int) temp2, nbits); } cinfo->dest->next_output_byte = entropy->next_output_byte; cinfo->dest->free_in_buffer = entropy->free_in_buffer; /* Update restart-interval state too */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } return TRUE; } /* * MCU encoding for AC initial scan (either spectral selection, * or first pass of successive approximation). */ METHODDEF(boolean) encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; register int temp, temp2; register int nbits; register int r, k; int Se, Al; const int * natural_order; JBLOCKROW block; entropy->next_output_byte = cinfo->dest->next_output_byte; entropy->free_in_buffer = cinfo->dest->free_in_buffer; /* Emit restart marker if needed */ if (cinfo->restart_interval) if (entropy->restarts_to_go == 0) emit_restart_e(entropy, entropy->next_restart_num); Se = cinfo->Se; Al = cinfo->Al; natural_order = cinfo->natural_order; /* Encode the MCU data block */ block = MCU_data[0]; /* Encode the AC coefficients per section G.1.2.2, fig. G.3 */ r = 0; /* r = run length of zeros */ for (k = cinfo->Ss; k <= Se; k++) { if ((temp = (*block)[natural_order[k]]) == 0) { r++; continue; } /* We must apply the point transform by Al. For AC coefficients this * is an integer division with rounding towards 0. To do this portably * in C, we shift after obtaining the absolute value; so the code is * interwoven with finding the abs value (temp) and output bits (temp2). */ if (temp < 0) { temp = -temp; /* temp is abs value of input */ temp >>= Al; /* apply the point transform */ /* For a negative coef, want temp2 = bitwise complement of abs(coef) */ temp2 = ~temp; } else { temp >>= Al; /* apply the point transform */ temp2 = temp; } /* Watch out for case that nonzero coef is zero after point transform */ if (temp == 0) { r++; continue; } /* Emit any pending EOBRUN */ if (entropy->EOBRUN > 0) emit_eobrun(entropy); /* if run length > 15, must emit special run-length-16 codes (0xF0) */ while (r > 15) { emit_ac_symbol(entropy, entropy->ac_tbl_no, 0xF0); r -= 16; } /* Find the number of bits needed for the magnitude of the coefficient */ nbits = 1; /* there must be at least one 1 bit */ while ((temp >>= 1)) nbits++; /* Check for out-of-range coefficient values */ if (nbits > MAX_COEF_BITS) ERREXIT(cinfo, JERR_BAD_DCT_COEF); /* Count/emit Huffman symbol for run length / number of bits */ emit_ac_symbol(entropy, entropy->ac_tbl_no, (r << 4) + nbits); /* Emit that number of bits of the value, if positive, */ /* or the complement of its magnitude, if negative. */ emit_bits_e(entropy, (unsigned int) temp2, nbits); r = 0; /* reset zero run length */ } if (r > 0) { /* If there are trailing zeroes, */ entropy->EOBRUN++; /* count an EOB */ if (entropy->EOBRUN == 0x7FFF) emit_eobrun(entropy); /* force it out to avoid overflow */ } cinfo->dest->next_output_byte = entropy->next_output_byte; cinfo->dest->free_in_buffer = entropy->free_in_buffer; /* Update restart-interval state too */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } return TRUE; } /* * MCU encoding for DC successive approximation refinement scan. * Note: we assume such scans can be multi-component, although the spec * is not very clear on the point. */ METHODDEF(boolean) encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; register int temp; int blkn; int Al = cinfo->Al; JBLOCKROW block; entropy->next_output_byte = cinfo->dest->next_output_byte; entropy->free_in_buffer = cinfo->dest->free_in_buffer; /* Emit restart marker if needed */ if (cinfo->restart_interval) if (entropy->restarts_to_go == 0) emit_restart_e(entropy, entropy->next_restart_num); /* Encode the MCU data blocks */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { block = MCU_data[blkn]; /* We simply emit the Al'th bit of the DC coefficient value. */ temp = (*block)[0]; emit_bits_e(entropy, (unsigned int) (temp >> Al), 1); } cinfo->dest->next_output_byte = entropy->next_output_byte; cinfo->dest->free_in_buffer = entropy->free_in_buffer; /* Update restart-interval state too */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } return TRUE; } /* * MCU encoding for AC successive approximation refinement scan. */ METHODDEF(boolean) encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; register int temp; register int r, k; int EOB; char *BR_buffer; unsigned int BR; int Se, Al; const int * natural_order; JBLOCKROW block; int absvalues[DCTSIZE2]; entropy->next_output_byte = cinfo->dest->next_output_byte; entropy->free_in_buffer = cinfo->dest->free_in_buffer; /* Emit restart marker if needed */ if (cinfo->restart_interval) if (entropy->restarts_to_go == 0) emit_restart_e(entropy, entropy->next_restart_num); Se = cinfo->Se; Al = cinfo->Al; natural_order = cinfo->natural_order; /* Encode the MCU data block */ block = MCU_data[0]; /* It is convenient to make a pre-pass to determine the transformed * coefficients' absolute values and the EOB position. */ EOB = 0; for (k = cinfo->Ss; k <= Se; k++) { temp = (*block)[natural_order[k]]; /* We must apply the point transform by Al. For AC coefficients this * is an integer division with rounding towards 0. To do this portably * in C, we shift after obtaining the absolute value. */ if (temp < 0) temp = -temp; /* temp is abs value of input */ temp >>= Al; /* apply the point transform */ absvalues[k] = temp; /* save abs value for main pass */ if (temp == 1) EOB = k; /* EOB = index of last newly-nonzero coef */ } /* Encode the AC coefficients per section G.1.2.3, fig. G.7 */ r = 0; /* r = run length of zeros */ BR = 0; /* BR = count of buffered bits added now */ BR_buffer = entropy->bit_buffer + entropy->BE; /* Append bits to buffer */ for (k = cinfo->Ss; k <= Se; k++) { if ((temp = absvalues[k]) == 0) { r++; continue; } /* Emit any required ZRLs, but not if they can be folded into EOB */ while (r > 15 && k <= EOB) { /* emit any pending EOBRUN and the BE correction bits */ emit_eobrun(entropy); /* Emit ZRL */ emit_ac_symbol(entropy, entropy->ac_tbl_no, 0xF0); r -= 16; /* Emit buffered correction bits that must be associated with ZRL */ emit_buffered_bits(entropy, BR_buffer, BR); BR_buffer = entropy->bit_buffer; /* BE bits are gone now */ BR = 0; } /* If the coef was previously nonzero, it only needs a correction bit. * NOTE: a straight translation of the spec's figure G.7 would suggest * that we also need to test r > 15. But if r > 15, we can only get here * if k > EOB, which implies that this coefficient is not 1. */ if (temp > 1) { /* The correction bit is the next bit of the absolute value. */ BR_buffer[BR++] = (char) (temp & 1); continue; } /* Emit any pending EOBRUN and the BE correction bits */ emit_eobrun(entropy); /* Count/emit Huffman symbol for run length / number of bits */ emit_ac_symbol(entropy, entropy->ac_tbl_no, (r << 4) + 1); /* Emit output bit for newly-nonzero coef */ temp = ((*block)[natural_order[k]] < 0) ? 0 : 1; emit_bits_e(entropy, (unsigned int) temp, 1); /* Emit buffered correction bits that must be associated with this code */ emit_buffered_bits(entropy, BR_buffer, BR); BR_buffer = entropy->bit_buffer; /* BE bits are gone now */ BR = 0; r = 0; /* reset zero run length */ } if (r > 0 || BR > 0) { /* If there are trailing zeroes, */ entropy->EOBRUN++; /* count an EOB */ entropy->BE += BR; /* concat my correction bits to older ones */ /* We force out the EOB if we risk either: * 1. overflow of the EOB counter; * 2. overflow of the correction bit buffer during the next MCU. */ if (entropy->EOBRUN == 0x7FFF || entropy->BE > (MAX_CORR_BITS-DCTSIZE2+1)) emit_eobrun(entropy); } cinfo->dest->next_output_byte = entropy->next_output_byte; cinfo->dest->free_in_buffer = entropy->free_in_buffer; /* Update restart-interval state too */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } return TRUE; } /* Encode a single block's worth of coefficients */ LOCAL(boolean) encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val, c_derived_tbl *dctbl, c_derived_tbl *actbl) { register int temp, temp2; register int nbits; register int k, r, i; int Se = state->cinfo->lim_Se; const int * natural_order = state->cinfo->natural_order; /* Encode the DC coefficient difference per section F.1.2.1 */ temp = temp2 = block[0] - last_dc_val; if (temp < 0) { temp = -temp; /* temp is abs value of input */ /* For a negative input, want temp2 = bitwise complement of abs(input) */ /* This code assumes we are on a two's complement machine */ temp2--; } /* Find the number of bits needed for the magnitude of the coefficient */ nbits = 0; while (temp) { nbits++; temp >>= 1; } /* Check for out-of-range coefficient values. * Since we're encoding a difference, the range limit is twice as much. */ if (nbits > MAX_COEF_BITS+1) ERREXIT(state->cinfo, JERR_BAD_DCT_COEF); /* Emit the Huffman-coded symbol for the number of bits */ if (! emit_bits_s(state, dctbl->ehufco[nbits], dctbl->ehufsi[nbits])) return FALSE; /* Emit that number of bits of the value, if positive, */ /* or the complement of its magnitude, if negative. */ if (nbits) /* emit_bits rejects calls with size 0 */ if (! emit_bits_s(state, (unsigned int) temp2, nbits)) return FALSE; /* Encode the AC coefficients per section F.1.2.2 */ r = 0; /* r = run length of zeros */ for (k = 1; k <= Se; k++) { if ((temp = block[natural_order[k]]) == 0) { r++; } else { /* if run length > 15, must emit special run-length-16 codes (0xF0) */ while (r > 15) { if (! emit_bits_s(state, actbl->ehufco[0xF0], actbl->ehufsi[0xF0])) return FALSE; r -= 16; } temp2 = temp; if (temp < 0) { temp = -temp; /* temp is abs value of input */ /* This code assumes we are on a two's complement machine */ temp2--; } /* Find the number of bits needed for the magnitude of the coefficient */ nbits = 1; /* there must be at least one 1 bit */ while ((temp >>= 1)) nbits++; /* Check for out-of-range coefficient values */ if (nbits > MAX_COEF_BITS) ERREXIT(state->cinfo, JERR_BAD_DCT_COEF); /* Emit Huffman symbol for run length / number of bits */ i = (r << 4) + nbits; if (! emit_bits_s(state, actbl->ehufco[i], actbl->ehufsi[i])) return FALSE; /* Emit that number of bits of the value, if positive, */ /* or the complement of its magnitude, if negative. */ if (! emit_bits_s(state, (unsigned int) temp2, nbits)) return FALSE; r = 0; } } /* If the last coef(s) were zero, emit an end-of-block code */ if (r > 0) if (! emit_bits_s(state, actbl->ehufco[0], actbl->ehufsi[0])) return FALSE; return TRUE; } /* * Encode and output one MCU's worth of Huffman-compressed coefficients. */ METHODDEF(boolean) encode_mcu_huff (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; working_state state; int blkn, ci; jpeg_component_info * compptr; /* Load up working state */ state.next_output_byte = cinfo->dest->next_output_byte; state.free_in_buffer = cinfo->dest->free_in_buffer; ASSIGN_STATE(state.cur, entropy->saved); state.cinfo = cinfo; /* Emit restart marker if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) if (! emit_restart_s(&state, entropy->next_restart_num)) return FALSE; } /* Encode the MCU data blocks */ for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { ci = cinfo->MCU_membership[blkn]; compptr = cinfo->cur_comp_info[ci]; if (! encode_one_block(&state, MCU_data[blkn][0], state.cur.last_dc_val[ci], entropy->dc_derived_tbls[compptr->dc_tbl_no], entropy->ac_derived_tbls[compptr->ac_tbl_no])) return FALSE; /* Update last_dc_val */ state.cur.last_dc_val[ci] = MCU_data[blkn][0][0]; } /* Completed MCU, so update state */ cinfo->dest->next_output_byte = state.next_output_byte; cinfo->dest->free_in_buffer = state.free_in_buffer; ASSIGN_STATE(entropy->saved, state.cur); /* Update restart-interval state too */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num++; entropy->next_restart_num &= 7; } entropy->restarts_to_go--; } return TRUE; } /* * Finish up at the end of a Huffman-compressed scan. */ METHODDEF(void) finish_pass_huff (j_compress_ptr cinfo) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; working_state state; if (cinfo->progressive_mode) { entropy->next_output_byte = cinfo->dest->next_output_byte; entropy->free_in_buffer = cinfo->dest->free_in_buffer; /* Flush out any buffered data */ emit_eobrun(entropy); flush_bits_e(entropy); cinfo->dest->next_output_byte = entropy->next_output_byte; cinfo->dest->free_in_buffer = entropy->free_in_buffer; } else { /* Load up working state ... flush_bits needs it */ state.next_output_byte = cinfo->dest->next_output_byte; state.free_in_buffer = cinfo->dest->free_in_buffer; ASSIGN_STATE(state.cur, entropy->saved); state.cinfo = cinfo; /* Flush out the last data */ if (! flush_bits_s(&state)) ERREXIT(cinfo, JERR_CANT_SUSPEND); /* Update state */ cinfo->dest->next_output_byte = state.next_output_byte; cinfo->dest->free_in_buffer = state.free_in_buffer; ASSIGN_STATE(entropy->saved, state.cur); } } /* * Huffman coding optimization. * * We first scan the supplied data and count the number of uses of each symbol * that is to be Huffman-coded. (This process MUST agree with the code above.) * Then we build a Huffman coding tree for the observed counts. * Symbols which are not needed at all for the particular image are not * assigned any code, which saves space in the DHT marker as well as in * the compressed data. */ /* Process a single block's worth of coefficients */ LOCAL(void) htest_one_block (j_compress_ptr cinfo, JCOEFPTR block, int last_dc_val, long dc_counts[], long ac_counts[]) { register int temp; register int nbits; register int k, r; int Se = cinfo->lim_Se; const int * natural_order = cinfo->natural_order; /* Encode the DC coefficient difference per section F.1.2.1 */ temp = block[0] - last_dc_val; if (temp < 0) temp = -temp; /* Find the number of bits needed for the magnitude of the coefficient */ nbits = 0; while (temp) { nbits++; temp >>= 1; } /* Check for out-of-range coefficient values. * Since we're encoding a difference, the range limit is twice as much. */ if (nbits > MAX_COEF_BITS+1) ERREXIT(cinfo, JERR_BAD_DCT_COEF); /* Count the Huffman symbol for the number of bits */ dc_counts[nbits]++; /* Encode the AC coefficients per section F.1.2.2 */ r = 0; /* r = run length of zeros */ for (k = 1; k <= Se; k++) { if ((temp = block[natural_order[k]]) == 0) { r++; } else { /* if run length > 15, must emit special run-length-16 codes (0xF0) */ while (r > 15) { ac_counts[0xF0]++; r -= 16; } /* Find the number of bits needed for the magnitude of the coefficient */ if (temp < 0) temp = -temp; /* Find the number of bits needed for the magnitude of the coefficient */ nbits = 1; /* there must be at least one 1 bit */ while ((temp >>= 1)) nbits++; /* Check for out-of-range coefficient values */ if (nbits > MAX_COEF_BITS) ERREXIT(cinfo, JERR_BAD_DCT_COEF); /* Count Huffman symbol for run length / number of bits */ ac_counts[(r << 4) + nbits]++; r = 0; } } /* If the last coef(s) were zero, emit an end-of-block code */ if (r > 0) ac_counts[0]++; } /* * Trial-encode one MCU's worth of Huffman-compressed coefficients. * No data is actually output, so no suspension return is possible. */ METHODDEF(boolean) encode_mcu_gather (j_compress_ptr cinfo, JBLOCKROW *MCU_data) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int blkn, ci; jpeg_component_info * compptr; /* Take care of restart intervals if needed */ if (cinfo->restart_interval) { if (entropy->restarts_to_go == 0) { /* Re-initialize DC predictions to 0 */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) entropy->saved.last_dc_val[ci] = 0; /* Update restart state */ entropy->restarts_to_go = cinfo->restart_interval; } entropy->restarts_to_go--; } for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { ci = cinfo->MCU_membership[blkn]; compptr = cinfo->cur_comp_info[ci]; htest_one_block(cinfo, MCU_data[blkn][0], entropy->saved.last_dc_val[ci], entropy->dc_count_ptrs[compptr->dc_tbl_no], entropy->ac_count_ptrs[compptr->ac_tbl_no]); entropy->saved.last_dc_val[ci] = MCU_data[blkn][0][0]; } return TRUE; } /* * Generate the best Huffman code table for the given counts, fill htbl. * * The JPEG standard requires that no symbol be assigned a codeword of all * one bits (so that padding bits added at the end of a compressed segment * can't look like a valid code). Because of the canonical ordering of * codewords, this just means that there must be an unused slot in the * longest codeword length category. Section K.2 of the JPEG spec suggests * reserving such a slot by pretending that symbol 256 is a valid symbol * with count 1. In theory that's not optimal; giving it count zero but * including it in the symbol set anyway should give a better Huffman code. * But the theoretically better code actually seems to come out worse in * practice, because it produces more all-ones bytes (which incur stuffed * zero bytes in the final file). In any case the difference is tiny. * * The JPEG standard requires Huffman codes to be no more than 16 bits long. * If some symbols have a very small but nonzero probability, the Huffman tree * must be adjusted to meet the code length restriction. We currently use * the adjustment method suggested in JPEG section K.2. This method is *not* * optimal; it may not choose the best possible limited-length code. But * typically only very-low-frequency symbols will be given less-than-optimal * lengths, so the code is almost optimal. Experimental comparisons against * an optimal limited-length-code algorithm indicate that the difference is * microscopic --- usually less than a hundredth of a percent of total size. * So the extra complexity of an optimal algorithm doesn't seem worthwhile. */ LOCAL(void) jpeg_gen_optimal_table (j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]) { #define MAX_CLEN 32 /* assumed maximum initial code length */ UINT8 bits[MAX_CLEN+1]; /* bits[k] = # of symbols with code length k */ int codesize[257]; /* codesize[k] = code length of symbol k */ int others[257]; /* next symbol in current branch of tree */ int c1, c2; int p, i, j; long v; /* This algorithm is explained in section K.2 of the JPEG standard */ MEMZERO(bits, SIZEOF(bits)); MEMZERO(codesize, SIZEOF(codesize)); for (i = 0; i < 257; i++) others[i] = -1; /* init links to empty */ freq[256] = 1; /* make sure 256 has a nonzero count */ /* Including the pseudo-symbol 256 in the Huffman procedure guarantees * that no real symbol is given code-value of all ones, because 256 * will be placed last in the largest codeword category. */ /* Huffman's basic algorithm to assign optimal code lengths to symbols */ for (;;) { /* Find the smallest nonzero frequency, set c1 = its symbol */ /* In case of ties, take the larger symbol number */ c1 = -1; v = 1000000000L; for (i = 0; i <= 256; i++) { if (freq[i] && freq[i] <= v) { v = freq[i]; c1 = i; } } /* Find the next smallest nonzero frequency, set c2 = its symbol */ /* In case of ties, take the larger symbol number */ c2 = -1; v = 1000000000L; for (i = 0; i <= 256; i++) { if (freq[i] && freq[i] <= v && i != c1) { v = freq[i]; c2 = i; } } /* Done if we've merged everything into one frequency */ if (c2 < 0) break; /* Else merge the two counts/trees */ freq[c1] += freq[c2]; freq[c2] = 0; /* Increment the codesize of everything in c1's tree branch */ codesize[c1]++; while (others[c1] >= 0) { c1 = others[c1]; codesize[c1]++; } others[c1] = c2; /* chain c2 onto c1's tree branch */ /* Increment the codesize of everything in c2's tree branch */ codesize[c2]++; while (others[c2] >= 0) { c2 = others[c2]; codesize[c2]++; } } /* Now count the number of symbols of each code length */ for (i = 0; i <= 256; i++) { if (codesize[i]) { /* The JPEG standard seems to think that this can't happen, */ /* but I'm paranoid... */ if (codesize[i] > MAX_CLEN) ERREXIT(cinfo, JERR_HUFF_CLEN_OVERFLOW); bits[codesize[i]]++; } } /* JPEG doesn't allow symbols with code lengths over 16 bits, so if the pure * Huffman procedure assigned any such lengths, we must adjust the coding. * Here is what the JPEG spec says about how this next bit works: * Since symbols are paired for the longest Huffman code, the symbols are * removed from this length category two at a time. The prefix for the pair * (which is one bit shorter) is allocated to one of the pair; then, * skipping the BITS entry for that prefix length, a code word from the next * shortest nonzero BITS entry is converted into a prefix for two code words * one bit longer. */ for (i = MAX_CLEN; i > 16; i--) { while (bits[i] > 0) { j = i - 2; /* find length of new prefix to be used */ while (bits[j] == 0) j--; bits[i] -= 2; /* remove two symbols */ bits[i-1]++; /* one goes in this length */ bits[j+1] += 2; /* two new symbols in this length */ bits[j]--; /* symbol of this length is now a prefix */ } } /* Remove the count for the pseudo-symbol 256 from the largest codelength */ while (bits[i] == 0) /* find largest codelength still in use */ i--; bits[i]--; /* Return final symbol counts (only for lengths 0..16) */ MEMCOPY(htbl->bits, bits, SIZEOF(htbl->bits)); /* Return a list of the symbols sorted by code length */ /* It's not real clear to me why we don't need to consider the codelength * changes made above, but the JPEG spec seems to think this works. */ p = 0; for (i = 1; i <= MAX_CLEN; i++) { for (j = 0; j <= 255; j++) { if (codesize[j] == i) { htbl->huffval[p] = (UINT8) j; p++; } } } /* Set sent_table FALSE so updated table will be written to JPEG file. */ htbl->sent_table = FALSE; } /* * Finish up a statistics-gathering pass and create the new Huffman tables. */ METHODDEF(void) finish_pass_gather (j_compress_ptr cinfo) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int ci, tbl; jpeg_component_info * compptr; JHUFF_TBL **htblptr; boolean did_dc[NUM_HUFF_TBLS]; boolean did_ac[NUM_HUFF_TBLS]; /* It's important not to apply jpeg_gen_optimal_table more than once * per table, because it clobbers the input frequency counts! */ if (cinfo->progressive_mode) /* Flush out buffered data (all we care about is counting the EOB symbol) */ emit_eobrun(entropy); MEMZERO(did_dc, SIZEOF(did_dc)); MEMZERO(did_ac, SIZEOF(did_ac)); for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* DC needs no table for refinement scan */ if (cinfo->Ss == 0 && cinfo->Ah == 0) { tbl = compptr->dc_tbl_no; if (! did_dc[tbl]) { htblptr = & cinfo->dc_huff_tbl_ptrs[tbl]; if (*htblptr == NULL) *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); jpeg_gen_optimal_table(cinfo, *htblptr, entropy->dc_count_ptrs[tbl]); did_dc[tbl] = TRUE; } } /* AC needs no table when not present */ if (cinfo->Se) { tbl = compptr->ac_tbl_no; if (! did_ac[tbl]) { htblptr = & cinfo->ac_huff_tbl_ptrs[tbl]; if (*htblptr == NULL) *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); jpeg_gen_optimal_table(cinfo, *htblptr, entropy->ac_count_ptrs[tbl]); did_ac[tbl] = TRUE; } } } } /* * Initialize for a Huffman-compressed scan. * If gather_statistics is TRUE, we do not output anything during the scan, * just count the Huffman symbols used and generate Huffman code tables. */ METHODDEF(void) start_pass_huff (j_compress_ptr cinfo, boolean gather_statistics) { huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; int ci, tbl; jpeg_component_info * compptr; if (gather_statistics) entropy->pub.finish_pass = finish_pass_gather; else entropy->pub.finish_pass = finish_pass_huff; if (cinfo->progressive_mode) { entropy->cinfo = cinfo; entropy->gather_statistics = gather_statistics; /* We assume jcmaster.c already validated the scan parameters. */ /* Select execution routine */ if (cinfo->Ah == 0) { if (cinfo->Ss == 0) entropy->pub.encode_mcu = encode_mcu_DC_first; else entropy->pub.encode_mcu = encode_mcu_AC_first; } else { if (cinfo->Ss == 0) entropy->pub.encode_mcu = encode_mcu_DC_refine; else { entropy->pub.encode_mcu = encode_mcu_AC_refine; /* AC refinement needs a correction bit buffer */ if (entropy->bit_buffer == NULL) entropy->bit_buffer = (char *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, MAX_CORR_BITS * SIZEOF(char)); } } /* Initialize AC stuff */ entropy->ac_tbl_no = cinfo->cur_comp_info[0]->ac_tbl_no; entropy->EOBRUN = 0; entropy->BE = 0; } else { if (gather_statistics) entropy->pub.encode_mcu = encode_mcu_gather; else entropy->pub.encode_mcu = encode_mcu_huff; } for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; /* DC needs no table for refinement scan */ if (cinfo->Ss == 0 && cinfo->Ah == 0) { tbl = compptr->dc_tbl_no; if (gather_statistics) { /* Check for invalid table index */ /* (make_c_derived_tbl does this in the other path) */ if (tbl < 0 || tbl >= NUM_HUFF_TBLS) ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tbl); /* Allocate and zero the statistics tables */ /* Note that jpeg_gen_optimal_table expects 257 entries in each table! */ if (entropy->dc_count_ptrs[tbl] == NULL) entropy->dc_count_ptrs[tbl] = (long *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 257 * SIZEOF(long)); MEMZERO(entropy->dc_count_ptrs[tbl], 257 * SIZEOF(long)); } else { /* Compute derived values for Huffman tables */ /* We may do this more than once for a table, but it's not expensive */ jpeg_make_c_derived_tbl(cinfo, TRUE, tbl, & entropy->dc_derived_tbls[tbl]); } /* Initialize DC predictions to 0 */ entropy->saved.last_dc_val[ci] = 0; } /* AC needs no table when not present */ if (cinfo->Se) { tbl = compptr->ac_tbl_no; if (gather_statistics) { if (tbl < 0 || tbl >= NUM_HUFF_TBLS) ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tbl); if (entropy->ac_count_ptrs[tbl] == NULL) entropy->ac_count_ptrs[tbl] = (long *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 257 * SIZEOF(long)); MEMZERO(entropy->ac_count_ptrs[tbl], 257 * SIZEOF(long)); } else { jpeg_make_c_derived_tbl(cinfo, FALSE, tbl, & entropy->ac_derived_tbls[tbl]); } } } /* Initialize bit buffer to empty */ entropy->saved.put_buffer = 0; entropy->saved.put_bits = 0; /* Initialize restart stuff */ entropy->restarts_to_go = cinfo->restart_interval; entropy->next_restart_num = 0; } /* * Module initialization routine for Huffman entropy encoding. */ GLOBAL(void) jinit_huff_encoder (j_compress_ptr cinfo) { huff_entropy_ptr entropy; int i; entropy = (huff_entropy_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(huff_entropy_encoder)); cinfo->entropy = (struct jpeg_entropy_encoder *) entropy; entropy->pub.start_pass = start_pass_huff; /* Mark tables unallocated */ for (i = 0; i < NUM_HUFF_TBLS; i++) { entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL; entropy->dc_count_ptrs[i] = entropy->ac_count_ptrs[i] = NULL; } if (cinfo->progressive_mode) entropy->bit_buffer = NULL; /* needed only in AC refinement scan */ } jpeg-8d1/jfdctflt.c0000644000175000017500000001357011134470655013003 0ustar billbill/* * jfdctflt.c * * Copyright (C) 1994-1996, Thomas G. Lane. * Modified 2003-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a floating-point implementation of the * forward DCT (Discrete Cosine Transform). * * This implementation should be more accurate than either of the integer * DCT implementations. However, it may not give the same results on all * machines because of differences in roundoff behavior. Speed will depend * on the hardware's floating point capacity. * * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT * on each column. Direct algorithms are also available, but they are * much more complex and seem not to be any faster when reduced to code. * * This implementation is based on Arai, Agui, and Nakajima's algorithm for * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in * Japanese, but the algorithm is described in the Pennebaker & Mitchell * JPEG textbook (see REFERENCES section in file README). The following code * is based directly on figure 4-8 in P&M. * While an 8-point DCT cannot be done in less than 11 multiplies, it is * possible to arrange the computation so that many of the multiplies are * simple scalings of the final outputs. These multiplies can then be * folded into the multiplications or divisions by the JPEG quantization * table entries. The AA&N method leaves only 5 multiplies and 29 adds * to be done in the DCT itself. * The primary disadvantage of this method is that with a fixed-point * implementation, accuracy is lost due to imprecise representation of the * scaled quantization values. However, that problem does not arise if * we use floating point arithmetic. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ #ifdef DCT_FLOAT_SUPPORTED /* * This module is specialized to the case DCTSIZE = 8. */ #if DCTSIZE != 8 Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ #endif /* * Perform the forward DCT on one block of samples. */ GLOBAL(void) jpeg_fdct_float (FAST_FLOAT * data, JSAMPARRAY sample_data, JDIMENSION start_col) { FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; FAST_FLOAT tmp10, tmp11, tmp12, tmp13; FAST_FLOAT z1, z2, z3, z4, z5, z11, z13; FAST_FLOAT *dataptr; JSAMPROW elemptr; int ctr; /* Pass 1: process rows. */ dataptr = data; for (ctr = 0; ctr < DCTSIZE; ctr++) { elemptr = sample_data[ctr] + start_col; /* Load data into workspace */ tmp0 = (FAST_FLOAT) (GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7])); tmp7 = (FAST_FLOAT) (GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[7])); tmp1 = (FAST_FLOAT) (GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[6])); tmp6 = (FAST_FLOAT) (GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[6])); tmp2 = (FAST_FLOAT) (GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[5])); tmp5 = (FAST_FLOAT) (GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5])); tmp3 = (FAST_FLOAT) (GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[4])); tmp4 = (FAST_FLOAT) (GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4])); /* Even part */ tmp10 = tmp0 + tmp3; /* phase 2 */ tmp13 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp1 - tmp2; /* Apply unsigned->signed conversion */ dataptr[0] = tmp10 + tmp11 - 8 * CENTERJSAMPLE; /* phase 3 */ dataptr[4] = tmp10 - tmp11; z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */ dataptr[2] = tmp13 + z1; /* phase 5 */ dataptr[6] = tmp13 - z1; /* Odd part */ tmp10 = tmp4 + tmp5; /* phase 2 */ tmp11 = tmp5 + tmp6; tmp12 = tmp6 + tmp7; /* The rotator is modified from fig 4-8 to avoid extra negations. */ z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */ z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */ z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */ z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */ z11 = tmp7 + z3; /* phase 5 */ z13 = tmp7 - z3; dataptr[5] = z13 + z2; /* phase 6 */ dataptr[3] = z13 - z2; dataptr[1] = z11 + z4; dataptr[7] = z11 - z4; dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; tmp7 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; tmp6 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; /* Even part */ tmp10 = tmp0 + tmp3; /* phase 2 */ tmp13 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp1 - tmp2; dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */ dataptr[DCTSIZE*4] = tmp10 - tmp11; z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */ dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */ dataptr[DCTSIZE*6] = tmp13 - z1; /* Odd part */ tmp10 = tmp4 + tmp5; /* phase 2 */ tmp11 = tmp5 + tmp6; tmp12 = tmp6 + tmp7; /* The rotator is modified from fig 4-8 to avoid extra negations. */ z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */ z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */ z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */ z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */ z11 = tmp7 + z3; /* phase 5 */ z13 = tmp7 - z3; dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */ dataptr[DCTSIZE*3] = z13 - z2; dataptr[DCTSIZE*1] = z11 + z4; dataptr[DCTSIZE*7] = z11 - z4; dataptr++; /* advance pointer to next column */ } } #endif /* DCT_FLOAT_SUPPORTED */ jpeg-8d1/jpeglib.h0000644000175000017500000013667111626214056012631 0ustar billbill/* * jpeglib.h * * Copyright (C) 1991-1998, Thomas G. Lane. * Modified 2002-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file defines the application interface for the JPEG library. * Most applications using the library need only include this file, * and perhaps jerror.h if they want to know the exact error codes. */ #ifndef JPEGLIB_H #define JPEGLIB_H /* * First we include the configuration files that record how this * installation of the JPEG library is set up. jconfig.h can be * generated automatically for many systems. jmorecfg.h contains * manual configuration options that most people need not worry about. */ #ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */ #include "jconfig.h" /* widely used configuration options */ #endif #include "jmorecfg.h" /* seldom changed options */ #ifdef __cplusplus #ifndef DONT_USE_EXTERN_C extern "C" { #endif #endif /* Version IDs for the JPEG library. * Might be useful for tests like "#if JPEG_LIB_VERSION >= 80". */ #define JPEG_LIB_VERSION 80 /* Compatibility version 8.0 */ #define JPEG_LIB_VERSION_MAJOR 8 #define JPEG_LIB_VERSION_MINOR 4 /* Various constants determining the sizes of things. * All of these are specified by the JPEG standard, so don't change them * if you want to be compatible. */ #define DCTSIZE 8 /* The basic DCT block is 8x8 coefficients */ #define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */ #define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */ #define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */ #define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */ #define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */ #define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */ /* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard; * the PostScript DCT filter can emit files with many more than 10 blocks/MCU. * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU * to handle it. We even let you do this from the jconfig.h file. However, * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe * sometimes emits noncompliant files doesn't mean you should too. */ #define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */ #ifndef D_MAX_BLOCKS_IN_MCU #define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */ #endif /* Data structures for images (arrays of samples and of DCT coefficients). * On 80x86 machines, the image arrays are too big for near pointers, * but the pointer arrays can fit in near memory. */ typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */ typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */ typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */ typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */ typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */ typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */ typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */ typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */ /* Types for JPEG compression parameters and working tables. */ /* DCT coefficient quantization tables. */ typedef struct { /* This array gives the coefficient quantizers in natural array order * (not the zigzag order in which they are stored in a JPEG DQT marker). * CAUTION: IJG versions prior to v6a kept this array in zigzag order. */ UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */ /* This field is used only during compression. It's initialized FALSE when * the table is created, and set TRUE when it's been output to the file. * You could suppress output of a table by setting this to TRUE. * (See jpeg_suppress_tables for an example.) */ boolean sent_table; /* TRUE when table has been output */ } JQUANT_TBL; /* Huffman coding tables. */ typedef struct { /* These two fields directly represent the contents of a JPEG DHT marker */ UINT8 bits[17]; /* bits[k] = # of symbols with codes of */ /* length k bits; bits[0] is unused */ UINT8 huffval[256]; /* The symbols, in order of incr code length */ /* This field is used only during compression. It's initialized FALSE when * the table is created, and set TRUE when it's been output to the file. * You could suppress output of a table by setting this to TRUE. * (See jpeg_suppress_tables for an example.) */ boolean sent_table; /* TRUE when table has been output */ } JHUFF_TBL; /* Basic info about one component (color channel). */ typedef struct { /* These values are fixed over the whole image. */ /* For compression, they must be supplied by parameter setup; */ /* for decompression, they are read from the SOF marker. */ int component_id; /* identifier for this component (0..255) */ int component_index; /* its index in SOF or cinfo->comp_info[] */ int h_samp_factor; /* horizontal sampling factor (1..4) */ int v_samp_factor; /* vertical sampling factor (1..4) */ int quant_tbl_no; /* quantization table selector (0..3) */ /* These values may vary between scans. */ /* For compression, they must be supplied by parameter setup; */ /* for decompression, they are read from the SOS marker. */ /* The decompressor output side may not use these variables. */ int dc_tbl_no; /* DC entropy table selector (0..3) */ int ac_tbl_no; /* AC entropy table selector (0..3) */ /* Remaining fields should be treated as private by applications. */ /* These values are computed during compression or decompression startup: */ /* Component's size in DCT blocks. * Any dummy blocks added to complete an MCU are not counted; therefore * these values do not depend on whether a scan is interleaved or not. */ JDIMENSION width_in_blocks; JDIMENSION height_in_blocks; /* Size of a DCT block in samples, * reflecting any scaling we choose to apply during the DCT step. * Values from 1 to 16 are supported. * Note that different components may receive different DCT scalings. */ int DCT_h_scaled_size; int DCT_v_scaled_size; /* The downsampled dimensions are the component's actual, unpadded number * of samples at the main buffer (preprocessing/compression interface); * DCT scaling is included, so * downsampled_width = ceil(image_width * Hi/Hmax * DCT_h_scaled_size/DCTSIZE) * and similarly for height. */ JDIMENSION downsampled_width; /* actual width in samples */ JDIMENSION downsampled_height; /* actual height in samples */ /* This flag is used only for decompression. In cases where some of the * components will be ignored (eg grayscale output from YCbCr image), * we can skip most computations for the unused components. */ boolean component_needed; /* do we need the value of this component? */ /* These values are computed before starting a scan of the component. */ /* The decompressor output side may not use these variables. */ int MCU_width; /* number of blocks per MCU, horizontally */ int MCU_height; /* number of blocks per MCU, vertically */ int MCU_blocks; /* MCU_width * MCU_height */ int MCU_sample_width; /* MCU width in samples: MCU_width * DCT_h_scaled_size */ int last_col_width; /* # of non-dummy blocks across in last MCU */ int last_row_height; /* # of non-dummy blocks down in last MCU */ /* Saved quantization table for component; NULL if none yet saved. * See jdinput.c comments about the need for this information. * This field is currently used only for decompression. */ JQUANT_TBL * quant_table; /* Private per-component storage for DCT or IDCT subsystem. */ void * dct_table; } jpeg_component_info; /* The script for encoding a multiple-scan file is an array of these: */ typedef struct { int comps_in_scan; /* number of components encoded in this scan */ int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */ int Ss, Se; /* progressive JPEG spectral selection parms */ int Ah, Al; /* progressive JPEG successive approx. parms */ } jpeg_scan_info; /* The decompressor can save APPn and COM markers in a list of these: */ typedef struct jpeg_marker_struct FAR * jpeg_saved_marker_ptr; struct jpeg_marker_struct { jpeg_saved_marker_ptr next; /* next in list, or NULL */ UINT8 marker; /* marker code: JPEG_COM, or JPEG_APP0+n */ unsigned int original_length; /* # bytes of data in the file */ unsigned int data_length; /* # bytes of data saved at data[] */ JOCTET FAR * data; /* the data contained in the marker */ /* the marker length word is not counted in data_length or original_length */ }; /* Known color spaces. */ typedef enum { JCS_UNKNOWN, /* error/unspecified */ JCS_GRAYSCALE, /* monochrome */ JCS_RGB, /* red/green/blue */ JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ JCS_CMYK, /* C/M/Y/K */ JCS_YCCK /* Y/Cb/Cr/K */ } J_COLOR_SPACE; /* DCT/IDCT algorithm options. */ typedef enum { JDCT_ISLOW, /* slow but accurate integer algorithm */ JDCT_IFAST, /* faster, less accurate integer method */ JDCT_FLOAT /* floating-point: accurate, fast on fast HW */ } J_DCT_METHOD; #ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */ #define JDCT_DEFAULT JDCT_ISLOW #endif #ifndef JDCT_FASTEST /* may be overridden in jconfig.h */ #define JDCT_FASTEST JDCT_IFAST #endif /* Dithering options for decompression. */ typedef enum { JDITHER_NONE, /* no dithering */ JDITHER_ORDERED, /* simple ordered dither */ JDITHER_FS /* Floyd-Steinberg error diffusion dither */ } J_DITHER_MODE; /* Common fields between JPEG compression and decompression master structs. */ #define jpeg_common_fields \ struct jpeg_error_mgr * err; /* Error handler module */\ struct jpeg_memory_mgr * mem; /* Memory manager module */\ struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\ void * client_data; /* Available for use by application */\ boolean is_decompressor; /* So common code can tell which is which */\ int global_state /* For checking call sequence validity */ /* Routines that are to be used by both halves of the library are declared * to receive a pointer to this structure. There are no actual instances of * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct. */ struct jpeg_common_struct { jpeg_common_fields; /* Fields common to both master struct types */ /* Additional fields follow in an actual jpeg_compress_struct or * jpeg_decompress_struct. All three structs must agree on these * initial fields! (This would be a lot cleaner in C++.) */ }; typedef struct jpeg_common_struct * j_common_ptr; typedef struct jpeg_compress_struct * j_compress_ptr; typedef struct jpeg_decompress_struct * j_decompress_ptr; /* Master record for a compression instance */ struct jpeg_compress_struct { jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */ /* Destination for compressed data */ struct jpeg_destination_mgr * dest; /* Description of source image --- these fields must be filled in by * outer application before starting compression. in_color_space must * be correct before you can even call jpeg_set_defaults(). */ JDIMENSION image_width; /* input image width */ JDIMENSION image_height; /* input image height */ int input_components; /* # of color components in input image */ J_COLOR_SPACE in_color_space; /* colorspace of input image */ double input_gamma; /* image gamma of input image */ /* Compression parameters --- these fields must be set before calling * jpeg_start_compress(). We recommend calling jpeg_set_defaults() to * initialize everything to reasonable defaults, then changing anything * the application specifically wants to change. That way you won't get * burnt when new parameters are added. Also note that there are several * helper routines to simplify changing parameters. */ unsigned int scale_num, scale_denom; /* fraction by which to scale image */ JDIMENSION jpeg_width; /* scaled JPEG image width */ JDIMENSION jpeg_height; /* scaled JPEG image height */ /* Dimensions of actual JPEG image that will be written to file, * derived from input dimensions by scaling factors above. * These fields are computed by jpeg_start_compress(). * You can also use jpeg_calc_jpeg_dimensions() to determine these values * in advance of calling jpeg_start_compress(). */ int data_precision; /* bits of precision in image data */ int num_components; /* # of color components in JPEG image */ J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ jpeg_component_info * comp_info; /* comp_info[i] describes component that appears i'th in SOF */ JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; int q_scale_factor[NUM_QUANT_TBLS]; /* ptrs to coefficient quantization tables, or NULL if not defined, * and corresponding scale factors (percentage, initialized 100). */ JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; /* ptrs to Huffman coding tables, or NULL if not defined */ UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ int num_scans; /* # of entries in scan_info array */ const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */ /* The default value of scan_info is NULL, which causes a single-scan * sequential JPEG file to be emitted. To create a multi-scan file, * set num_scans and scan_info to point to an array of scan definitions. */ boolean raw_data_in; /* TRUE=caller supplies downsampled data */ boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ boolean optimize_coding; /* TRUE=optimize entropy encoding parms */ boolean CCIR601_sampling; /* TRUE=first samples are cosited */ boolean do_fancy_downsampling; /* TRUE=apply fancy downsampling */ int smoothing_factor; /* 1..100, or 0 for no input smoothing */ J_DCT_METHOD dct_method; /* DCT algorithm selector */ /* The restart interval can be specified in absolute MCUs by setting * restart_interval, or in MCU rows by setting restart_in_rows * (in which case the correct restart_interval will be figured * for each scan). */ unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */ int restart_in_rows; /* if > 0, MCU rows per restart interval */ /* Parameters controlling emission of special markers. */ boolean write_JFIF_header; /* should a JFIF marker be written? */ UINT8 JFIF_major_version; /* What to write for the JFIF version number */ UINT8 JFIF_minor_version; /* These three values are not used by the JPEG code, merely copied */ /* into the JFIF APP0 marker. density_unit can be 0 for unknown, */ /* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */ /* ratio is defined by X_density/Y_density even when density_unit=0. */ UINT8 density_unit; /* JFIF code for pixel size units */ UINT16 X_density; /* Horizontal pixel density */ UINT16 Y_density; /* Vertical pixel density */ boolean write_Adobe_marker; /* should an Adobe marker be written? */ /* State variable: index of next scanline to be written to * jpeg_write_scanlines(). Application may use this to control its * processing loop, e.g., "while (next_scanline < image_height)". */ JDIMENSION next_scanline; /* 0 .. image_height-1 */ /* Remaining fields are known throughout compressor, but generally * should not be touched by a surrounding application. */ /* * These fields are computed during compression startup */ boolean progressive_mode; /* TRUE if scan script uses progressive mode */ int max_h_samp_factor; /* largest h_samp_factor */ int max_v_samp_factor; /* largest v_samp_factor */ int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */ int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */ JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */ /* The coefficient controller receives data in units of MCU rows as defined * for fully interleaved scans (whether the JPEG file is interleaved or not). * There are v_samp_factor * DCTSIZE sample rows of each component in an * "iMCU" (interleaved MCU) row. */ /* * These fields are valid during any one scan. * They describe the components and MCUs actually appearing in the scan. */ int comps_in_scan; /* # of JPEG components in this scan */ jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; /* *cur_comp_info[i] describes component that appears i'th in SOS */ JDIMENSION MCUs_per_row; /* # of MCUs across the image */ JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ int blocks_in_MCU; /* # of DCT blocks per MCU */ int MCU_membership[C_MAX_BLOCKS_IN_MCU]; /* MCU_membership[i] is index in cur_comp_info of component owning */ /* i'th block in an MCU */ int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ int block_size; /* the basic DCT block size: 1..16 */ const int * natural_order; /* natural-order position array */ int lim_Se; /* min( Se, DCTSIZE2-1 ) */ /* * Links to compression subobjects (methods and private variables of modules) */ struct jpeg_comp_master * master; struct jpeg_c_main_controller * main; struct jpeg_c_prep_controller * prep; struct jpeg_c_coef_controller * coef; struct jpeg_marker_writer * marker; struct jpeg_color_converter * cconvert; struct jpeg_downsampler * downsample; struct jpeg_forward_dct * fdct; struct jpeg_entropy_encoder * entropy; jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */ int script_space_size; }; /* Master record for a decompression instance */ struct jpeg_decompress_struct { jpeg_common_fields; /* Fields shared with jpeg_compress_struct */ /* Source of compressed data */ struct jpeg_source_mgr * src; /* Basic description of image --- filled in by jpeg_read_header(). */ /* Application may inspect these values to decide how to process image. */ JDIMENSION image_width; /* nominal image width (from SOF marker) */ JDIMENSION image_height; /* nominal image height */ int num_components; /* # of color components in JPEG image */ J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ /* Decompression processing parameters --- these fields must be set before * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes * them to default values. */ J_COLOR_SPACE out_color_space; /* colorspace for output */ unsigned int scale_num, scale_denom; /* fraction by which to scale image */ double output_gamma; /* image gamma wanted in output */ boolean buffered_image; /* TRUE=multiple output passes */ boolean raw_data_out; /* TRUE=downsampled data wanted */ J_DCT_METHOD dct_method; /* IDCT algorithm selector */ boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */ boolean do_block_smoothing; /* TRUE=apply interblock smoothing */ boolean quantize_colors; /* TRUE=colormapped output wanted */ /* the following are ignored if not quantize_colors: */ J_DITHER_MODE dither_mode; /* type of color dithering to use */ boolean two_pass_quantize; /* TRUE=use two-pass color quantization */ int desired_number_of_colors; /* max # colors to use in created colormap */ /* these are significant only in buffered-image mode: */ boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */ boolean enable_external_quant;/* enable future use of external colormap */ boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */ /* Description of actual output image that will be returned to application. * These fields are computed by jpeg_start_decompress(). * You can also use jpeg_calc_output_dimensions() to determine these values * in advance of calling jpeg_start_decompress(). */ JDIMENSION output_width; /* scaled image width */ JDIMENSION output_height; /* scaled image height */ int out_color_components; /* # of color components in out_color_space */ int output_components; /* # of color components returned */ /* output_components is 1 (a colormap index) when quantizing colors; * otherwise it equals out_color_components. */ int rec_outbuf_height; /* min recommended height of scanline buffer */ /* If the buffer passed to jpeg_read_scanlines() is less than this many rows * high, space and time will be wasted due to unnecessary data copying. * Usually rec_outbuf_height will be 1 or 2, at most 4. */ /* When quantizing colors, the output colormap is described by these fields. * The application can supply a colormap by setting colormap non-NULL before * calling jpeg_start_decompress; otherwise a colormap is created during * jpeg_start_decompress or jpeg_start_output. * The map has out_color_components rows and actual_number_of_colors columns. */ int actual_number_of_colors; /* number of entries in use */ JSAMPARRAY colormap; /* The color map as a 2-D pixel array */ /* State variables: these variables indicate the progress of decompression. * The application may examine these but must not modify them. */ /* Row index of next scanline to be read from jpeg_read_scanlines(). * Application may use this to control its processing loop, e.g., * "while (output_scanline < output_height)". */ JDIMENSION output_scanline; /* 0 .. output_height-1 */ /* Current input scan number and number of iMCU rows completed in scan. * These indicate the progress of the decompressor input side. */ int input_scan_number; /* Number of SOS markers seen so far */ JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */ /* The "output scan number" is the notional scan being displayed by the * output side. The decompressor will not allow output scan/row number * to get ahead of input scan/row, but it can fall arbitrarily far behind. */ int output_scan_number; /* Nominal scan number being displayed */ JDIMENSION output_iMCU_row; /* Number of iMCU rows read */ /* Current progression status. coef_bits[c][i] indicates the precision * with which component c's DCT coefficient i (in zigzag order) is known. * It is -1 when no data has yet been received, otherwise it is the point * transform (shift) value for the most recent scan of the coefficient * (thus, 0 at completion of the progression). * This pointer is NULL when reading a non-progressive file. */ int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */ /* Internal JPEG parameters --- the application usually need not look at * these fields. Note that the decompressor output side may not use * any parameters that can change between scans. */ /* Quantization and Huffman tables are carried forward across input * datastreams when processing abbreviated JPEG datastreams. */ JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; /* ptrs to coefficient quantization tables, or NULL if not defined */ JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; /* ptrs to Huffman coding tables, or NULL if not defined */ /* These parameters are never carried across datastreams, since they * are given in SOF/SOS markers or defined to be reset by SOI. */ int data_precision; /* bits of precision in image data */ jpeg_component_info * comp_info; /* comp_info[i] describes component that appears i'th in SOF */ boolean is_baseline; /* TRUE if Baseline SOF0 encountered */ boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */ boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */ /* These fields record data obtained from optional markers recognized by * the JPEG library. */ boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */ /* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */ UINT8 JFIF_major_version; /* JFIF version number */ UINT8 JFIF_minor_version; UINT8 density_unit; /* JFIF code for pixel size units */ UINT16 X_density; /* Horizontal pixel density */ UINT16 Y_density; /* Vertical pixel density */ boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */ UINT8 Adobe_transform; /* Color transform code from Adobe marker */ boolean CCIR601_sampling; /* TRUE=first samples are cosited */ /* Aside from the specific data retained from APPn markers known to the * library, the uninterpreted contents of any or all APPn and COM markers * can be saved in a list for examination by the application. */ jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */ /* Remaining fields are known throughout decompressor, but generally * should not be touched by a surrounding application. */ /* * These fields are computed during decompression startup */ int max_h_samp_factor; /* largest h_samp_factor */ int max_v_samp_factor; /* largest v_samp_factor */ int min_DCT_h_scaled_size; /* smallest DCT_h_scaled_size of any component */ int min_DCT_v_scaled_size; /* smallest DCT_v_scaled_size of any component */ JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */ /* The coefficient controller's input and output progress is measured in * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows * in fully interleaved JPEG scans, but are used whether the scan is * interleaved or not. We define an iMCU row as v_samp_factor DCT block * rows of each component. Therefore, the IDCT output contains * v_samp_factor*DCT_v_scaled_size sample rows of a component per iMCU row. */ JSAMPLE * sample_range_limit; /* table for fast range-limiting */ /* * These fields are valid during any one scan. * They describe the components and MCUs actually appearing in the scan. * Note that the decompressor output side must not use these fields. */ int comps_in_scan; /* # of JPEG components in this scan */ jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; /* *cur_comp_info[i] describes component that appears i'th in SOS */ JDIMENSION MCUs_per_row; /* # of MCUs across the image */ JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ int blocks_in_MCU; /* # of DCT blocks per MCU */ int MCU_membership[D_MAX_BLOCKS_IN_MCU]; /* MCU_membership[i] is index in cur_comp_info of component owning */ /* i'th block in an MCU */ int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ /* These fields are derived from Se of first SOS marker. */ int block_size; /* the basic DCT block size: 1..16 */ const int * natural_order; /* natural-order position array for entropy decode */ int lim_Se; /* min( Se, DCTSIZE2-1 ) for entropy decode */ /* This field is shared between entropy decoder and marker parser. * It is either zero or the code of a JPEG marker that has been * read from the data source, but has not yet been processed. */ int unread_marker; /* * Links to decompression subobjects (methods, private variables of modules) */ struct jpeg_decomp_master * master; struct jpeg_d_main_controller * main; struct jpeg_d_coef_controller * coef; struct jpeg_d_post_controller * post; struct jpeg_input_controller * inputctl; struct jpeg_marker_reader * marker; struct jpeg_entropy_decoder * entropy; struct jpeg_inverse_dct * idct; struct jpeg_upsampler * upsample; struct jpeg_color_deconverter * cconvert; struct jpeg_color_quantizer * cquantize; }; /* "Object" declarations for JPEG modules that may be supplied or called * directly by the surrounding application. * As with all objects in the JPEG library, these structs only define the * publicly visible methods and state variables of a module. Additional * private fields may exist after the public ones. */ /* Error handler object */ struct jpeg_error_mgr { /* Error exit handler: does not return to caller */ JMETHOD(void, error_exit, (j_common_ptr cinfo)); /* Conditionally emit a trace or warning message */ JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level)); /* Routine that actually outputs a trace or error message */ JMETHOD(void, output_message, (j_common_ptr cinfo)); /* Format a message string for the most recent JPEG error or message */ JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer)); #define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */ /* Reset error state variables at start of a new image */ JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo)); /* The message ID code and any parameters are saved here. * A message can have one string parameter or up to 8 int parameters. */ int msg_code; #define JMSG_STR_PARM_MAX 80 union { int i[8]; char s[JMSG_STR_PARM_MAX]; } msg_parm; /* Standard state variables for error facility */ int trace_level; /* max msg_level that will be displayed */ /* For recoverable corrupt-data errors, we emit a warning message, * but keep going unless emit_message chooses to abort. emit_message * should count warnings in num_warnings. The surrounding application * can check for bad data by seeing if num_warnings is nonzero at the * end of processing. */ long num_warnings; /* number of corrupt-data warnings */ /* These fields point to the table(s) of error message strings. * An application can change the table pointer to switch to a different * message list (typically, to change the language in which errors are * reported). Some applications may wish to add additional error codes * that will be handled by the JPEG library error mechanism; the second * table pointer is used for this purpose. * * First table includes all errors generated by JPEG library itself. * Error code 0 is reserved for a "no such error string" message. */ const char * const * jpeg_message_table; /* Library errors */ int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */ /* Second table can be added by application (see cjpeg/djpeg for example). * It contains strings numbered first_addon_message..last_addon_message. */ const char * const * addon_message_table; /* Non-library errors */ int first_addon_message; /* code for first string in addon table */ int last_addon_message; /* code for last string in addon table */ }; /* Progress monitor object */ struct jpeg_progress_mgr { JMETHOD(void, progress_monitor, (j_common_ptr cinfo)); long pass_counter; /* work units completed in this pass */ long pass_limit; /* total number of work units in this pass */ int completed_passes; /* passes completed so far */ int total_passes; /* total number of passes expected */ }; /* Data destination object for compression */ struct jpeg_destination_mgr { JOCTET * next_output_byte; /* => next byte to write in buffer */ size_t free_in_buffer; /* # of byte spaces remaining in buffer */ JMETHOD(void, init_destination, (j_compress_ptr cinfo)); JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo)); JMETHOD(void, term_destination, (j_compress_ptr cinfo)); }; /* Data source object for decompression */ struct jpeg_source_mgr { const JOCTET * next_input_byte; /* => next byte to read from buffer */ size_t bytes_in_buffer; /* # of bytes remaining in buffer */ JMETHOD(void, init_source, (j_decompress_ptr cinfo)); JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo)); JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes)); JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired)); JMETHOD(void, term_source, (j_decompress_ptr cinfo)); }; /* Memory manager object. * Allocates "small" objects (a few K total), "large" objects (tens of K), * and "really big" objects (virtual arrays with backing store if needed). * The memory manager does not allow individual objects to be freed; rather, * each created object is assigned to a pool, and whole pools can be freed * at once. This is faster and more convenient than remembering exactly what * to free, especially where malloc()/free() are not too speedy. * NB: alloc routines never return NULL. They exit to error_exit if not * successful. */ #define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */ #define JPOOL_IMAGE 1 /* lasts until done with image/datastream */ #define JPOOL_NUMPOOLS 2 typedef struct jvirt_sarray_control * jvirt_sarray_ptr; typedef struct jvirt_barray_control * jvirt_barray_ptr; struct jpeg_memory_mgr { /* Method pointers */ JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id, size_t sizeofobject)); JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id, size_t sizeofobject)); JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id, JDIMENSION samplesperrow, JDIMENSION numrows)); JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id, JDIMENSION blocksperrow, JDIMENSION numrows)); JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION samplesperrow, JDIMENSION numrows, JDIMENSION maxaccess)); JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION blocksperrow, JDIMENSION numrows, JDIMENSION maxaccess)); JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo)); JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo, jvirt_sarray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable)); JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo, jvirt_barray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable)); JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id)); JMETHOD(void, self_destruct, (j_common_ptr cinfo)); /* Limit on memory allocation for this JPEG object. (Note that this is * merely advisory, not a guaranteed maximum; it only affects the space * used for virtual-array buffers.) May be changed by outer application * after creating the JPEG object. */ long max_memory_to_use; /* Maximum allocation request accepted by alloc_large. */ long max_alloc_chunk; }; /* Routine signature for application-supplied marker processing methods. * Need not pass marker code since it is stored in cinfo->unread_marker. */ typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo)); /* Declarations for routines called by application. * The JPP macro hides prototype parameters from compilers that can't cope. * Note JPP requires double parentheses. */ #ifdef HAVE_PROTOTYPES #define JPP(arglist) arglist #else #define JPP(arglist) () #endif /* Short forms of external names for systems with brain-damaged linkers. * We shorten external names to be unique in the first six letters, which * is good enough for all known systems. * (If your compiler itself needs names to be unique in less than 15 * characters, you are out of luck. Get a better compiler.) */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jpeg_std_error jStdError #define jpeg_CreateCompress jCreaCompress #define jpeg_CreateDecompress jCreaDecompress #define jpeg_destroy_compress jDestCompress #define jpeg_destroy_decompress jDestDecompress #define jpeg_stdio_dest jStdDest #define jpeg_stdio_src jStdSrc #define jpeg_mem_dest jMemDest #define jpeg_mem_src jMemSrc #define jpeg_set_defaults jSetDefaults #define jpeg_set_colorspace jSetColorspace #define jpeg_default_colorspace jDefColorspace #define jpeg_set_quality jSetQuality #define jpeg_set_linear_quality jSetLQuality #define jpeg_default_qtables jDefQTables #define jpeg_add_quant_table jAddQuantTable #define jpeg_quality_scaling jQualityScaling #define jpeg_simple_progression jSimProgress #define jpeg_suppress_tables jSuppressTables #define jpeg_alloc_quant_table jAlcQTable #define jpeg_alloc_huff_table jAlcHTable #define jpeg_start_compress jStrtCompress #define jpeg_write_scanlines jWrtScanlines #define jpeg_finish_compress jFinCompress #define jpeg_calc_jpeg_dimensions jCjpegDimensions #define jpeg_write_raw_data jWrtRawData #define jpeg_write_marker jWrtMarker #define jpeg_write_m_header jWrtMHeader #define jpeg_write_m_byte jWrtMByte #define jpeg_write_tables jWrtTables #define jpeg_read_header jReadHeader #define jpeg_start_decompress jStrtDecompress #define jpeg_read_scanlines jReadScanlines #define jpeg_finish_decompress jFinDecompress #define jpeg_read_raw_data jReadRawData #define jpeg_has_multiple_scans jHasMultScn #define jpeg_start_output jStrtOutput #define jpeg_finish_output jFinOutput #define jpeg_input_complete jInComplete #define jpeg_new_colormap jNewCMap #define jpeg_consume_input jConsumeInput #define jpeg_core_output_dimensions jCoreDimensions #define jpeg_calc_output_dimensions jCalcDimensions #define jpeg_save_markers jSaveMarkers #define jpeg_set_marker_processor jSetMarker #define jpeg_read_coefficients jReadCoefs #define jpeg_write_coefficients jWrtCoefs #define jpeg_copy_critical_parameters jCopyCrit #define jpeg_abort_compress jAbrtCompress #define jpeg_abort_decompress jAbrtDecompress #define jpeg_abort jAbort #define jpeg_destroy jDestroy #define jpeg_resync_to_restart jResyncRestart #endif /* NEED_SHORT_EXTERNAL_NAMES */ /* Default error-management setup */ EXTERN(struct jpeg_error_mgr *) jpeg_std_error JPP((struct jpeg_error_mgr * err)); /* Initialization of JPEG compression objects. * jpeg_create_compress() and jpeg_create_decompress() are the exported * names that applications should call. These expand to calls on * jpeg_CreateCompress and jpeg_CreateDecompress with additional information * passed for version mismatch checking. * NB: you must set up the error-manager BEFORE calling jpeg_create_xxx. */ #define jpeg_create_compress(cinfo) \ jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \ (size_t) sizeof(struct jpeg_compress_struct)) #define jpeg_create_decompress(cinfo) \ jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \ (size_t) sizeof(struct jpeg_decompress_struct)) EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo, int version, size_t structsize)); EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo, int version, size_t structsize)); /* Destruction of JPEG compression objects */ EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo)); EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo)); /* Standard data source and destination managers: stdio streams. */ /* Caller is responsible for opening the file before and closing after. */ EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile)); EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FILE * infile)); /* Data source and destination managers: memory buffers. */ EXTERN(void) jpeg_mem_dest JPP((j_compress_ptr cinfo, unsigned char ** outbuffer, unsigned long * outsize)); EXTERN(void) jpeg_mem_src JPP((j_decompress_ptr cinfo, unsigned char * inbuffer, unsigned long insize)); /* Default parameter setup for compression */ EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo)); /* Compression parameter setup aids */ EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo, J_COLOR_SPACE colorspace)); EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo)); EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality, boolean force_baseline)); EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo, int scale_factor, boolean force_baseline)); EXTERN(void) jpeg_default_qtables JPP((j_compress_ptr cinfo, boolean force_baseline)); EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl, const unsigned int *basic_table, int scale_factor, boolean force_baseline)); EXTERN(int) jpeg_quality_scaling JPP((int quality)); EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo)); EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo, boolean suppress)); EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo)); EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo)); /* Main entry points for compression */ EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo, boolean write_all_tables)); EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo, JSAMPARRAY scanlines, JDIMENSION num_lines)); EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo)); /* Precalculate JPEG dimensions for current compression parameters. */ EXTERN(void) jpeg_calc_jpeg_dimensions JPP((j_compress_ptr cinfo)); /* Replaces jpeg_write_scanlines when writing raw downsampled data. */ EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo, JSAMPIMAGE data, JDIMENSION num_lines)); /* Write a special marker. See libjpeg.txt concerning safe usage. */ EXTERN(void) jpeg_write_marker JPP((j_compress_ptr cinfo, int marker, const JOCTET * dataptr, unsigned int datalen)); /* Same, but piecemeal. */ EXTERN(void) jpeg_write_m_header JPP((j_compress_ptr cinfo, int marker, unsigned int datalen)); EXTERN(void) jpeg_write_m_byte JPP((j_compress_ptr cinfo, int val)); /* Alternate compression function: just write an abbreviated table file */ EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo)); /* Decompression startup: read start of JPEG datastream to see what's there */ EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo, boolean require_image)); /* Return value is one of: */ #define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */ #define JPEG_HEADER_OK 1 /* Found valid image datastream */ #define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */ /* If you pass require_image = TRUE (normal case), you need not check for * a TABLES_ONLY return code; an abbreviated file will cause an error exit. * JPEG_SUSPENDED is only possible if you use a data source module that can * give a suspension return (the stdio source module doesn't). */ /* Main entry points for decompression */ EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo)); EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo, JSAMPARRAY scanlines, JDIMENSION max_lines)); EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo)); /* Replaces jpeg_read_scanlines when reading raw downsampled data. */ EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo, JSAMPIMAGE data, JDIMENSION max_lines)); /* Additional entry points for buffered-image mode. */ EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo)); EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo, int scan_number)); EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo)); EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo)); EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo)); EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo)); /* Return value is one of: */ /* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */ #define JPEG_REACHED_SOS 1 /* Reached start of new scan */ #define JPEG_REACHED_EOI 2 /* Reached end of image */ #define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */ #define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */ /* Precalculate output dimensions for current decompression parameters. */ EXTERN(void) jpeg_core_output_dimensions JPP((j_decompress_ptr cinfo)); EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo)); /* Control saving of COM and APPn markers into marker_list. */ EXTERN(void) jpeg_save_markers JPP((j_decompress_ptr cinfo, int marker_code, unsigned int length_limit)); /* Install a special processing method for COM or APPn markers. */ EXTERN(void) jpeg_set_marker_processor JPP((j_decompress_ptr cinfo, int marker_code, jpeg_marker_parser_method routine)); /* Read or write raw DCT coefficients --- useful for lossless transcoding. */ EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo)); EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)); EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo)); /* If you choose to abort compression or decompression before completing * jpeg_finish_(de)compress, then you need to clean up to release memory, * temporary files, etc. You can just call jpeg_destroy_(de)compress * if you're done with the JPEG object, but if you want to clean it up and * reuse it, call this: */ EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo)); EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo)); /* Generic versions of jpeg_abort and jpeg_destroy that work on either * flavor of JPEG object. These may be more convenient in some places. */ EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo)); EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo)); /* Default restart-marker-resync procedure for use by data source modules */ EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo, int desired)); /* These marker codes are exported since applications and data source modules * are likely to want to use them. */ #define JPEG_RST0 0xD0 /* RST0 marker code */ #define JPEG_EOI 0xD9 /* EOI marker code */ #define JPEG_APP0 0xE0 /* APP0 marker code */ #define JPEG_COM 0xFE /* COM marker code */ /* If we have a brain-damaged compiler that emits warnings (or worse, errors) * for structure definitions that are never filled in, keep it quiet by * supplying dummy definitions for the various substructures. */ #ifdef INCOMPLETE_TYPES_BROKEN #ifndef JPEG_INTERNALS /* will be defined in jpegint.h */ struct jvirt_sarray_control { long dummy; }; struct jvirt_barray_control { long dummy; }; struct jpeg_comp_master { long dummy; }; struct jpeg_c_main_controller { long dummy; }; struct jpeg_c_prep_controller { long dummy; }; struct jpeg_c_coef_controller { long dummy; }; struct jpeg_marker_writer { long dummy; }; struct jpeg_color_converter { long dummy; }; struct jpeg_downsampler { long dummy; }; struct jpeg_forward_dct { long dummy; }; struct jpeg_entropy_encoder { long dummy; }; struct jpeg_decomp_master { long dummy; }; struct jpeg_d_main_controller { long dummy; }; struct jpeg_d_coef_controller { long dummy; }; struct jpeg_d_post_controller { long dummy; }; struct jpeg_input_controller { long dummy; }; struct jpeg_marker_reader { long dummy; }; struct jpeg_entropy_decoder { long dummy; }; struct jpeg_inverse_dct { long dummy; }; struct jpeg_upsampler { long dummy; }; struct jpeg_color_deconverter { long dummy; }; struct jpeg_color_quantizer { long dummy; }; #endif /* JPEG_INTERNALS */ #endif /* INCOMPLETE_TYPES_BROKEN */ /* * The JPEG library modules define JPEG_INTERNALS before including this file. * The internal structure declarations are read only when that is true. * Applications using the library should not include jpegint.h, but may wish * to include jerror.h. */ #ifdef JPEG_INTERNALS #include "jpegint.h" /* fetch private declarations */ #include "jerror.h" /* fetch error codes too */ #endif #ifdef __cplusplus #ifndef DONT_USE_EXTERN_C } #endif #endif #endif /* JPEGLIB_H */ jpeg-8d1/makecdep.vc60000644000175000017500000000216311174127244013221 0ustar billbill# Microsoft Developer Studio erstellte Abhngigkeitsdatei, einbezogen von cjpeg.mak .\cdjpeg.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\cjpeg.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ ".\jversion.h"\ .\rdbmp.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\rdgif.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\rdppm.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\rdrle.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\rdswitch.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\rdtarga.c : \ ".\cderror.h"\ ".\cdjpeg.h"\ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ jpeg-8d1/ckconfig.c0000644000175000017500000002760611161224203012755 0ustar billbill/* * ckconfig.c * * Copyright (C) 1991-1994, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. */ /* * This program is intended to help you determine how to configure the JPEG * software for installation on a particular system. The idea is to try to * compile and execute this program. If your compiler fails to compile the * program, make changes as indicated in the comments below. Once you can * compile the program, run it, and it will produce a "jconfig.h" file for * your system. * * As a general rule, each time you try to compile this program, * pay attention only to the *first* error message you get from the compiler. * Many C compilers will issue lots of spurious error messages once they * have gotten confused. Go to the line indicated in the first error message, * and read the comments preceding that line to see what to change. * * Almost all of the edits you may need to make to this program consist of * changing a line that reads "#define SOME_SYMBOL" to "#undef SOME_SYMBOL", * or vice versa. This is called defining or undefining that symbol. */ /* First we must see if your system has the include files we need. * We start out with the assumption that your system has all the ANSI-standard * include files. If you get any error trying to include one of these files, * undefine the corresponding HAVE_xxx symbol. */ #define HAVE_STDDEF_H /* replace 'define' by 'undef' if error here */ #ifdef HAVE_STDDEF_H /* next line will be skipped if you undef... */ #include #endif #define HAVE_STDLIB_H /* same thing for stdlib.h */ #ifdef HAVE_STDLIB_H #include #endif #include /* If you ain't got this, you ain't got C. */ /* We have to see if your string functions are defined by * strings.h (old BSD convention) or string.h (everybody else). * We try the non-BSD convention first; define NEED_BSD_STRINGS * if the compiler says it can't find string.h. */ #undef NEED_BSD_STRINGS #ifdef NEED_BSD_STRINGS #include #else #include #endif /* On some systems (especially older Unix machines), type size_t is * defined only in the include file . If you get a failure * on the size_t test below, try defining NEED_SYS_TYPES_H. */ #undef NEED_SYS_TYPES_H /* start by assuming we don't need it */ #ifdef NEED_SYS_TYPES_H #include #endif /* Usually type size_t is defined in one of the include files we've included * above. If not, you'll get an error on the "typedef size_t my_size_t;" line. * In that case, first try defining NEED_SYS_TYPES_H just above. * If that doesn't work, you'll have to search through your system library * to figure out which include file defines "size_t". Look for a line that * says "typedef something-or-other size_t;". Then, change the line below * that says "#include " to instead include the file * you found size_t in, and define NEED_SPECIAL_INCLUDE. If you can't find * type size_t anywhere, try replacing "#include " with * "typedef unsigned int size_t;". */ #undef NEED_SPECIAL_INCLUDE /* assume we DON'T need it, for starters */ #ifdef NEED_SPECIAL_INCLUDE #include #endif typedef size_t my_size_t; /* The payoff: do we have size_t now? */ /* The next question is whether your compiler supports ANSI-style function * prototypes. You need to know this in order to choose between using * makefile.ansi and using makefile.unix. * The #define line below is set to assume you have ANSI function prototypes. * If you get an error in this group of lines, undefine HAVE_PROTOTYPES. */ #define HAVE_PROTOTYPES #ifdef HAVE_PROTOTYPES int testfunction (int arg1, int * arg2); /* check prototypes */ struct methods_struct { /* check method-pointer declarations */ int (*error_exit) (char *msgtext); int (*trace_message) (char *msgtext); int (*another_method) (void); }; int testfunction (int arg1, int * arg2) /* check definitions */ { return arg2[arg1]; } int test2function (void) /* check void arg list */ { return 0; } #endif /* Now we want to find out if your compiler knows what "unsigned char" means. * If you get an error on the "unsigned char un_char;" line, * then undefine HAVE_UNSIGNED_CHAR. */ #define HAVE_UNSIGNED_CHAR #ifdef HAVE_UNSIGNED_CHAR unsigned char un_char; #endif /* Now we want to find out if your compiler knows what "unsigned short" means. * If you get an error on the "unsigned short un_short;" line, * then undefine HAVE_UNSIGNED_SHORT. */ #define HAVE_UNSIGNED_SHORT #ifdef HAVE_UNSIGNED_SHORT unsigned short un_short; #endif /* Now we want to find out if your compiler understands type "void". * If you get an error anywhere in here, undefine HAVE_VOID. */ #define HAVE_VOID #ifdef HAVE_VOID /* Caution: a C++ compiler will insist on complete prototypes */ typedef void * void_ptr; /* check void * */ #ifdef HAVE_PROTOTYPES /* check ptr to function returning void */ typedef void (*void_func) (int a, int b); #else typedef void (*void_func) (); #endif #ifdef HAVE_PROTOTYPES /* check void function result */ void test3function (void_ptr arg1, void_func arg2) #else void test3function (arg1, arg2) void_ptr arg1; void_func arg2; #endif { char * locptr = (char *) arg1; /* check casting to and from void * */ arg1 = (void *) locptr; (*arg2) (1, 2); /* check call of fcn returning void */ } #endif /* Now we want to find out if your compiler knows what "const" means. * If you get an error here, undefine HAVE_CONST. */ #define HAVE_CONST #ifdef HAVE_CONST static const int carray[3] = {1, 2, 3}; #ifdef HAVE_PROTOTYPES int test4function (const int arg1) #else int test4function (arg1) const int arg1; #endif { return carray[arg1]; } #endif /* If you get an error or warning about this structure definition, * define INCOMPLETE_TYPES_BROKEN. */ #undef INCOMPLETE_TYPES_BROKEN #ifndef INCOMPLETE_TYPES_BROKEN typedef struct undefined_structure * undef_struct_ptr; #endif /* If you get an error about duplicate names, * define NEED_SHORT_EXTERNAL_NAMES. */ #undef NEED_SHORT_EXTERNAL_NAMES #ifndef NEED_SHORT_EXTERNAL_NAMES int possibly_duplicate_function () { return 0; } int possibly_dupli_function () { return 1; } #endif /************************************************************************ * OK, that's it. You should not have to change anything beyond this * point in order to compile and execute this program. (You might get * some warnings, but you can ignore them.) * When you run the program, it will make a couple more tests that it * can do automatically, and then it will create jconfig.h and print out * any additional suggestions it has. ************************************************************************ */ #ifdef HAVE_PROTOTYPES int is_char_signed (int arg) #else int is_char_signed (arg) int arg; #endif { if (arg == 189) { /* expected result for unsigned char */ return 0; /* type char is unsigned */ } else if (arg != -67) { /* expected result for signed char */ printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n"); printf("I fear the JPEG software will not work at all.\n\n"); } return 1; /* assume char is signed otherwise */ } #ifdef HAVE_PROTOTYPES int is_shifting_signed (long arg) #else int is_shifting_signed (arg) long arg; #endif /* See whether right-shift on a long is signed or not. */ { long res = arg >> 4; if (res == -0x7F7E80CL) { /* expected result for signed shift */ return 1; /* right shift is signed */ } /* see if unsigned-shift hack will fix it. */ /* we can't just test exact value since it depends on width of long... */ res |= (~0L) << (32-4); if (res == -0x7F7E80CL) { /* expected result now? */ return 0; /* right shift is unsigned */ } printf("Right shift isn't acting as I expect it to.\n"); printf("I fear the JPEG software will not work at all.\n\n"); return 0; /* try it with unsigned anyway */ } #ifdef HAVE_PROTOTYPES int main (int argc, char ** argv) #else int main (argc, argv) int argc; char ** argv; #endif { char signed_char_check = (char) (-67); FILE *outfile; /* Attempt to write jconfig.h */ if ((outfile = fopen("jconfig.h", "w")) == NULL) { printf("Failed to write jconfig.h\n"); return 1; } /* Write out all the info */ fprintf(outfile, "/* jconfig.h --- generated by ckconfig.c */\n"); fprintf(outfile, "/* see jconfig.txt for explanations */\n\n"); #ifdef HAVE_PROTOTYPES fprintf(outfile, "#define HAVE_PROTOTYPES\n"); #else fprintf(outfile, "#undef HAVE_PROTOTYPES\n"); #endif #ifdef HAVE_UNSIGNED_CHAR fprintf(outfile, "#define HAVE_UNSIGNED_CHAR\n"); #else fprintf(outfile, "#undef HAVE_UNSIGNED_CHAR\n"); #endif #ifdef HAVE_UNSIGNED_SHORT fprintf(outfile, "#define HAVE_UNSIGNED_SHORT\n"); #else fprintf(outfile, "#undef HAVE_UNSIGNED_SHORT\n"); #endif #ifdef HAVE_VOID fprintf(outfile, "/* #define void char */\n"); #else fprintf(outfile, "#define void char\n"); #endif #ifdef HAVE_CONST fprintf(outfile, "/* #define const */\n"); #else fprintf(outfile, "#define const\n"); #endif if (is_char_signed((int) signed_char_check)) fprintf(outfile, "#undef CHAR_IS_UNSIGNED\n"); else fprintf(outfile, "#define CHAR_IS_UNSIGNED\n"); #ifdef HAVE_STDDEF_H fprintf(outfile, "#define HAVE_STDDEF_H\n"); #else fprintf(outfile, "#undef HAVE_STDDEF_H\n"); #endif #ifdef HAVE_STDLIB_H fprintf(outfile, "#define HAVE_STDLIB_H\n"); #else fprintf(outfile, "#undef HAVE_STDLIB_H\n"); #endif #ifdef NEED_BSD_STRINGS fprintf(outfile, "#define NEED_BSD_STRINGS\n"); #else fprintf(outfile, "#undef NEED_BSD_STRINGS\n"); #endif #ifdef NEED_SYS_TYPES_H fprintf(outfile, "#define NEED_SYS_TYPES_H\n"); #else fprintf(outfile, "#undef NEED_SYS_TYPES_H\n"); #endif fprintf(outfile, "#undef NEED_FAR_POINTERS\n"); #ifdef NEED_SHORT_EXTERNAL_NAMES fprintf(outfile, "#define NEED_SHORT_EXTERNAL_NAMES\n"); #else fprintf(outfile, "#undef NEED_SHORT_EXTERNAL_NAMES\n"); #endif #ifdef INCOMPLETE_TYPES_BROKEN fprintf(outfile, "#define INCOMPLETE_TYPES_BROKEN\n"); #else fprintf(outfile, "#undef INCOMPLETE_TYPES_BROKEN\n"); #endif fprintf(outfile, "\n#ifdef JPEG_INTERNALS\n\n"); if (is_shifting_signed(-0x7F7E80B1L)) fprintf(outfile, "#undef RIGHT_SHIFT_IS_UNSIGNED\n"); else fprintf(outfile, "#define RIGHT_SHIFT_IS_UNSIGNED\n"); fprintf(outfile, "\n#endif /* JPEG_INTERNALS */\n"); fprintf(outfile, "\n#ifdef JPEG_CJPEG_DJPEG\n\n"); fprintf(outfile, "#define BMP_SUPPORTED /* BMP image file format */\n"); fprintf(outfile, "#define GIF_SUPPORTED /* GIF image file format */\n"); fprintf(outfile, "#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */\n"); fprintf(outfile, "#undef RLE_SUPPORTED /* Utah RLE image file format */\n"); fprintf(outfile, "#define TARGA_SUPPORTED /* Targa image file format */\n\n"); fprintf(outfile, "#undef TWO_FILE_COMMANDLINE /* You may need this on non-Unix systems */\n"); fprintf(outfile, "#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */\n"); fprintf(outfile, "#undef DONT_USE_B_MODE\n"); fprintf(outfile, "/* #define PROGRESS_REPORT */ /* optional */\n"); fprintf(outfile, "\n#endif /* JPEG_CJPEG_DJPEG */\n"); /* Close the jconfig.h file */ fclose(outfile); /* User report */ printf("Configuration check for Independent JPEG Group's software done.\n"); printf("\nI have written the jconfig.h file for you.\n\n"); #ifdef HAVE_PROTOTYPES printf("You should use makefile.ansi as the starting point for your Makefile.\n"); #else printf("You should use makefile.unix as the starting point for your Makefile.\n"); #endif #ifdef NEED_SPECIAL_INCLUDE printf("\nYou'll need to change jconfig.h to include the system include file\n"); printf("that you found type size_t in, or add a direct definition of type\n"); printf("size_t if that's what you used. Just add it to the end.\n"); #endif return 0; } jpeg-8d1/cjpeg.c0000644000175000017500000005076611664152674012311 0ustar billbill/* * cjpeg.c * * Copyright (C) 1991-1998, Thomas G. Lane. * Modified 2003-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a command-line user interface for the JPEG compressor. * It should work on any system with Unix- or MS-DOS-style command lines. * * Two different command line styles are permitted, depending on the * compile-time switch TWO_FILE_COMMANDLINE: * cjpeg [options] inputfile outputfile * cjpeg [options] [inputfile] * In the second style, output is always to standard output, which you'd * normally redirect to a file or pipe to some other program. Input is * either from a named file or from standard input (typically redirected). * The second style is convenient on Unix but is unhelpful on systems that * don't support pipes. Also, you MUST use the first style if your system * doesn't do binary I/O to stdin/stdout. * To simplify script writing, the "-outfile" switch is provided. The syntax * cjpeg [options] -outfile outputfile inputfile * works regardless of which command line style is used. */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #include "jversion.h" /* for version message */ #ifdef USE_CCOMMAND /* command-line reader for Macintosh */ #ifdef __MWERKS__ #include /* Metrowerks needs this */ #include /* ... and this */ #endif #ifdef THINK_C #include /* Think declares it here */ #endif #endif /* Create the add-on message string table. */ #define JMESSAGE(code,string) string , static const char * const cdjpeg_message_table[] = { #include "cderror.h" NULL }; /* * This routine determines what format the input file is, * and selects the appropriate input-reading module. * * To determine which family of input formats the file belongs to, * we may look only at the first byte of the file, since C does not * guarantee that more than one character can be pushed back with ungetc. * Looking at additional bytes would require one of these approaches: * 1) assume we can fseek() the input file (fails for piped input); * 2) assume we can push back more than one character (works in * some C implementations, but unportable); * 3) provide our own buffering (breaks input readers that want to use * stdio directly, such as the RLE library); * or 4) don't put back the data, and modify the input_init methods to assume * they start reading after the start of file (also breaks RLE library). * #1 is attractive for MS-DOS but is untenable on Unix. * * The most portable solution for file types that can't be identified by their * first byte is to make the user tell us what they are. This is also the * only approach for "raw" file types that contain only arbitrary values. * We presently apply this method for Targa files. Most of the time Targa * files start with 0x00, so we recognize that case. Potentially, however, * a Targa file could start with any byte value (byte 0 is the length of the * seldom-used ID field), so we provide a switch to force Targa input mode. */ static boolean is_targa; /* records user -targa switch */ LOCAL(cjpeg_source_ptr) select_file_type (j_compress_ptr cinfo, FILE * infile) { int c; if (is_targa) { #ifdef TARGA_SUPPORTED return jinit_read_targa(cinfo); #else ERREXIT(cinfo, JERR_TGA_NOTCOMP); #endif } if ((c = getc(infile)) == EOF) ERREXIT(cinfo, JERR_INPUT_EMPTY); if (ungetc(c, infile) == EOF) ERREXIT(cinfo, JERR_UNGETC_FAILED); switch (c) { #ifdef BMP_SUPPORTED case 'B': return jinit_read_bmp(cinfo); #endif #ifdef GIF_SUPPORTED case 'G': return jinit_read_gif(cinfo); #endif #ifdef PPM_SUPPORTED case 'P': return jinit_read_ppm(cinfo); #endif #ifdef RLE_SUPPORTED case 'R': return jinit_read_rle(cinfo); #endif #ifdef TARGA_SUPPORTED case 0x00: return jinit_read_targa(cinfo); #endif default: ERREXIT(cinfo, JERR_UNKNOWN_FORMAT); break; } return NULL; /* suppress compiler warnings */ } /* * Argument-parsing code. * The switch parser is designed to be useful with DOS-style command line * syntax, ie, intermixed switches and file names, where only the switches * to the left of a given file name affect processing of that file. * The main program in this file doesn't actually use this capability... */ static const char * progname; /* program name for error messages */ static char * outfilename; /* for -outfile switch */ LOCAL(void) usage (void) /* complain about bad command line */ { fprintf(stderr, "usage: %s [switches] ", progname); #ifdef TWO_FILE_COMMANDLINE fprintf(stderr, "inputfile outputfile\n"); #else fprintf(stderr, "[inputfile]\n"); #endif fprintf(stderr, "Switches (names may be abbreviated):\n"); fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is useful range)\n"); fprintf(stderr, " -grayscale Create monochrome JPEG file\n"); fprintf(stderr, " -rgb Create RGB JPEG file\n"); #ifdef ENTROPY_OPT_SUPPORTED fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n"); #endif #ifdef C_PROGRESSIVE_SUPPORTED fprintf(stderr, " -progressive Create progressive JPEG file\n"); #endif #ifdef DCT_SCALING_SUPPORTED fprintf(stderr, " -scale M/N Scale image by fraction M/N, eg, 1/2\n"); #endif #ifdef TARGA_SUPPORTED fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n"); #endif fprintf(stderr, "Switches for advanced users:\n"); #ifdef C_ARITH_CODING_SUPPORTED fprintf(stderr, " -arithmetic Use arithmetic coding\n"); #endif #ifdef DCT_SCALING_SUPPORTED fprintf(stderr, " -block N DCT block size (1..16; default is 8)\n"); #endif #ifdef DCT_ISLOW_SUPPORTED fprintf(stderr, " -dct int Use integer DCT method%s\n", (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); #endif #ifdef DCT_IFAST_SUPPORTED fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); #endif #ifdef DCT_FLOAT_SUPPORTED fprintf(stderr, " -dct float Use floating-point DCT method%s\n", (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); #endif fprintf(stderr, " -nosmooth Don't use high-quality downsampling\n"); fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n"); #ifdef INPUT_SMOOTHING_SUPPORTED fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n"); #endif fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); fprintf(stderr, " -outfile name Specify name for output file\n"); fprintf(stderr, " -verbose or -debug Emit debug output\n"); fprintf(stderr, "Switches for wizards:\n"); fprintf(stderr, " -baseline Force baseline quantization tables\n"); fprintf(stderr, " -qtables file Use quantization tables given in file\n"); fprintf(stderr, " -qslots N[,...] Set component quantization tables\n"); fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n"); #ifdef C_MULTISCAN_FILES_SUPPORTED fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n"); #endif exit(EXIT_FAILURE); } LOCAL(int) parse_switches (j_compress_ptr cinfo, int argc, char **argv, int last_file_arg_seen, boolean for_real) /* Parse optional switches. * Returns argv[] index of first file-name argument (== argc if none). * Any file names with indexes <= last_file_arg_seen are ignored; * they have presumably been processed in a previous iteration. * (Pass 0 for last_file_arg_seen on the first or only iteration.) * for_real is FALSE on the first (dummy) pass; we may skip any expensive * processing. */ { int argn; char * arg; boolean force_baseline; boolean simple_progressive; char * qualityarg = NULL; /* saves -quality parm if any */ char * qtablefile = NULL; /* saves -qtables filename if any */ char * qslotsarg = NULL; /* saves -qslots parm if any */ char * samplearg = NULL; /* saves -sample parm if any */ char * scansarg = NULL; /* saves -scans parm if any */ /* Set up default JPEG parameters. */ force_baseline = FALSE; /* by default, allow 16-bit quantizers */ simple_progressive = FALSE; is_targa = FALSE; outfilename = NULL; cinfo->err->trace_level = 0; /* Scan command line options, adjust parameters */ for (argn = 1; argn < argc; argn++) { arg = argv[argn]; if (*arg != '-') { /* Not a switch, must be a file name argument */ if (argn <= last_file_arg_seen) { outfilename = NULL; /* -outfile applies to just one input file */ continue; /* ignore this name if previously processed */ } break; /* else done parsing switches */ } arg++; /* advance past switch marker character */ if (keymatch(arg, "arithmetic", 1)) { /* Use arithmetic coding. */ #ifdef C_ARITH_CODING_SUPPORTED cinfo->arith_code = TRUE; #else fprintf(stderr, "%s: sorry, arithmetic coding not supported\n", progname); exit(EXIT_FAILURE); #endif } else if (keymatch(arg, "baseline", 2)) { /* Force baseline-compatible output (8-bit quantizer values). */ force_baseline = TRUE; } else if (keymatch(arg, "block", 2)) { /* Set DCT block size. */ #if defined DCT_SCALING_SUPPORTED && JPEG_LIB_VERSION_MAJOR >= 8 && \ (JPEG_LIB_VERSION_MAJOR > 8 || JPEG_LIB_VERSION_MINOR >= 3) int val; if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%d", &val) != 1) usage(); if (val < 1 || val > 16) usage(); cinfo->block_size = val; #else fprintf(stderr, "%s: sorry, block size setting not supported\n", progname); exit(EXIT_FAILURE); #endif } else if (keymatch(arg, "dct", 2)) { /* Select DCT algorithm. */ if (++argn >= argc) /* advance to next argument */ usage(); if (keymatch(argv[argn], "int", 1)) { cinfo->dct_method = JDCT_ISLOW; } else if (keymatch(argv[argn], "fast", 2)) { cinfo->dct_method = JDCT_IFAST; } else if (keymatch(argv[argn], "float", 2)) { cinfo->dct_method = JDCT_FLOAT; } else usage(); } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { /* Enable debug printouts. */ /* On first -d, print version identification */ static boolean printed_version = FALSE; if (! printed_version) { fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n", JVERSION, JCOPYRIGHT); printed_version = TRUE; } cinfo->err->trace_level++; } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { /* Force a monochrome JPEG file to be generated. */ jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); } else if (keymatch(arg, "rgb", 3)) { /* Force an RGB JPEG file to be generated. */ jpeg_set_colorspace(cinfo, JCS_RGB); } else if (keymatch(arg, "maxmemory", 3)) { /* Maximum memory in Kb (or Mb with 'm'). */ long lval; char ch = 'x'; if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) usage(); if (ch == 'm' || ch == 'M') lval *= 1000L; cinfo->mem->max_memory_to_use = lval * 1000L; } else if (keymatch(arg, "nosmooth", 3)) { /* Suppress fancy downsampling */ cinfo->do_fancy_downsampling = FALSE; } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) { /* Enable entropy parm optimization. */ #ifdef ENTROPY_OPT_SUPPORTED cinfo->optimize_coding = TRUE; #else fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n", progname); exit(EXIT_FAILURE); #endif } else if (keymatch(arg, "outfile", 4)) { /* Set output file name. */ if (++argn >= argc) /* advance to next argument */ usage(); outfilename = argv[argn]; /* save it away for later use */ } else if (keymatch(arg, "progressive", 1)) { /* Select simple progressive mode. */ #ifdef C_PROGRESSIVE_SUPPORTED simple_progressive = TRUE; /* We must postpone execution until num_components is known. */ #else fprintf(stderr, "%s: sorry, progressive output was not compiled\n", progname); exit(EXIT_FAILURE); #endif } else if (keymatch(arg, "quality", 1)) { /* Quality ratings (quantization table scaling factors). */ if (++argn >= argc) /* advance to next argument */ usage(); qualityarg = argv[argn]; } else if (keymatch(arg, "qslots", 2)) { /* Quantization table slot numbers. */ if (++argn >= argc) /* advance to next argument */ usage(); qslotsarg = argv[argn]; /* Must delay setting qslots until after we have processed any * colorspace-determining switches, since jpeg_set_colorspace sets * default quant table numbers. */ } else if (keymatch(arg, "qtables", 2)) { /* Quantization tables fetched from file. */ if (++argn >= argc) /* advance to next argument */ usage(); qtablefile = argv[argn]; /* We postpone actually reading the file in case -quality comes later. */ } else if (keymatch(arg, "restart", 1)) { /* Restart interval in MCU rows (or in MCUs with 'b'). */ long lval; char ch = 'x'; if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) usage(); if (lval < 0 || lval > 65535L) usage(); if (ch == 'b' || ch == 'B') { cinfo->restart_interval = (unsigned int) lval; cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */ } else { cinfo->restart_in_rows = (int) lval; /* restart_interval will be computed during startup */ } } else if (keymatch(arg, "sample", 2)) { /* Set sampling factors. */ if (++argn >= argc) /* advance to next argument */ usage(); samplearg = argv[argn]; /* Must delay setting sample factors until after we have processed any * colorspace-determining switches, since jpeg_set_colorspace sets * default sampling factors. */ } else if (keymatch(arg, "scale", 4)) { /* Scale the image by a fraction M/N. */ if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%d/%d", &cinfo->scale_num, &cinfo->scale_denom) != 2) usage(); } else if (keymatch(arg, "scans", 4)) { /* Set scan script. */ #ifdef C_MULTISCAN_FILES_SUPPORTED if (++argn >= argc) /* advance to next argument */ usage(); scansarg = argv[argn]; /* We must postpone reading the file in case -progressive appears. */ #else fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n", progname); exit(EXIT_FAILURE); #endif } else if (keymatch(arg, "smooth", 2)) { /* Set input smoothing factor. */ int val; if (++argn >= argc) /* advance to next argument */ usage(); if (sscanf(argv[argn], "%d", &val) != 1) usage(); if (val < 0 || val > 100) usage(); cinfo->smoothing_factor = val; } else if (keymatch(arg, "targa", 1)) { /* Input file is Targa format. */ is_targa = TRUE; } else { usage(); /* bogus switch */ } } /* Post-switch-scanning cleanup */ if (for_real) { /* Set quantization tables for selected quality. */ /* Some or all may be overridden if -qtables is present. */ if (qualityarg != NULL) /* process -quality if it was present */ if (! set_quality_ratings(cinfo, qualityarg, force_baseline)) usage(); if (qtablefile != NULL) /* process -qtables if it was present */ if (! read_quant_tables(cinfo, qtablefile, force_baseline)) usage(); if (qslotsarg != NULL) /* process -qslots if it was present */ if (! set_quant_slots(cinfo, qslotsarg)) usage(); if (samplearg != NULL) /* process -sample if it was present */ if (! set_sample_factors(cinfo, samplearg)) usage(); #ifdef C_PROGRESSIVE_SUPPORTED if (simple_progressive) /* process -progressive; -scans can override */ jpeg_simple_progression(cinfo); #endif #ifdef C_MULTISCAN_FILES_SUPPORTED if (scansarg != NULL) /* process -scans if it was present */ if (! read_scan_script(cinfo, scansarg)) usage(); #endif } return argn; /* return index of next arg (file name) */ } /* * The main program. */ int main (int argc, char **argv) { struct jpeg_compress_struct cinfo; struct jpeg_error_mgr jerr; #ifdef PROGRESS_REPORT struct cdjpeg_progress_mgr progress; #endif int file_index; cjpeg_source_ptr src_mgr; FILE * input_file; FILE * output_file; JDIMENSION num_scanlines; /* On Mac, fetch a command line. */ #ifdef USE_CCOMMAND argc = ccommand(&argv); #endif progname = argv[0]; if (progname == NULL || progname[0] == 0) progname = "cjpeg"; /* in case C library doesn't provide it */ /* Initialize the JPEG compression object with default error handling. */ cinfo.err = jpeg_std_error(&jerr); jpeg_create_compress(&cinfo); /* Add some application-specific error messages (from cderror.h) */ jerr.addon_message_table = cdjpeg_message_table; jerr.first_addon_message = JMSG_FIRSTADDONCODE; jerr.last_addon_message = JMSG_LASTADDONCODE; /* Now safe to enable signal catcher. */ #ifdef NEED_SIGNAL_CATCHER enable_signal_catcher((j_common_ptr) &cinfo); #endif /* Initialize JPEG parameters. * Much of this may be overridden later. * In particular, we don't yet know the input file's color space, * but we need to provide some value for jpeg_set_defaults() to work. */ cinfo.in_color_space = JCS_RGB; /* arbitrary guess */ jpeg_set_defaults(&cinfo); /* Scan command line to find file names. * It is convenient to use just one switch-parsing routine, but the switch * values read here are ignored; we will rescan the switches after opening * the input file. */ file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); #ifdef TWO_FILE_COMMANDLINE /* Must have either -outfile switch or explicit output file name */ if (outfilename == NULL) { if (file_index != argc-2) { fprintf(stderr, "%s: must name one input and one output file\n", progname); usage(); } outfilename = argv[file_index+1]; } else { if (file_index != argc-1) { fprintf(stderr, "%s: must name one input and one output file\n", progname); usage(); } } #else /* Unix style: expect zero or one file name */ if (file_index < argc-1) { fprintf(stderr, "%s: only one input file\n", progname); usage(); } #endif /* TWO_FILE_COMMANDLINE */ /* Open the input file. */ if (file_index < argc) { if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); exit(EXIT_FAILURE); } } else { /* default input file is stdin */ input_file = read_stdin(); } /* Open the output file. */ if (outfilename != NULL) { if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, outfilename); exit(EXIT_FAILURE); } } else { /* default output file is stdout */ output_file = write_stdout(); } #ifdef PROGRESS_REPORT start_progress_monitor((j_common_ptr) &cinfo, &progress); #endif /* Figure out the input file format, and set up to read it. */ src_mgr = select_file_type(&cinfo, input_file); src_mgr->input_file = input_file; /* Read the input file header to obtain file size & colorspace. */ (*src_mgr->start_input) (&cinfo, src_mgr); /* Now that we know input colorspace, fix colorspace-dependent defaults */ jpeg_default_colorspace(&cinfo); /* Adjust default compression parameters by re-parsing the options */ file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); /* Specify data destination for compression */ jpeg_stdio_dest(&cinfo, output_file); /* Start compressor */ jpeg_start_compress(&cinfo, TRUE); /* Process data */ while (cinfo.next_scanline < cinfo.image_height) { num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr); (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines); } /* Finish compression and release memory */ (*src_mgr->finish_input) (&cinfo, src_mgr); jpeg_finish_compress(&cinfo); jpeg_destroy_compress(&cinfo); /* Close files, if we opened them */ if (input_file != stdin) fclose(input_file); if (output_file != stdout) fclose(output_file); #ifdef PROGRESS_REPORT end_progress_monitor((j_common_ptr) &cinfo); #endif /* All done. */ exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); return 0; /* suppress no-return-value warnings */ } jpeg-8d1/makerfil.v100000644000175000017500000000216611367232726013163 0ustar billbill {4FC737F1-C7A5-4376-A066-2A32D752A2FF} cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx {93995380-89BD-4b04-88EB-625FBE52EBFB} h;hpp;hxx;hm;inl;inc;xsd {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms Header Files Header Files Source Files jpeg-8d1/install.txt0000644000175000017500000015031111651762762013250 0ustar billbillINSTALLATION INSTRUCTIONS for the Independent JPEG Group's JPEG software Copyright (C) 1991-2011, Thomas G. Lane, Guido Vollbeding. This file is part of the Independent JPEG Group's software. For conditions of distribution and use, see the accompanying README file. This file explains how to configure and install the IJG software. We have tried to make this software extremely portable and flexible, so that it can be adapted to almost any environment. The downside of this decision is that the installation process is complicated. We have provided shortcuts to simplify the task on common systems. But in any case, you will need at least a little familiarity with C programming and program build procedures for your system. If you are only using this software as part of a larger program, the larger program's installation procedure may take care of configuring the IJG code. For example, Ghostscript's installation script will configure the IJG code. You don't need to read this file if you just want to compile Ghostscript. If you are on a Unix machine, you may not need to read this file at all. Try doing ./configure make make test If that doesn't complain, do make install (better do "make -n install" first to see if the makefile will put the files where you want them). Read further if you run into snags or want to customize the code for your system. TABLE OF CONTENTS ----------------- Before you start Configuring the software: using the automatic "configure" script using one of the supplied jconfig and makefile files by hand Building the software Testing the software Installing the software Optional stuff Optimization Hints for specific systems BEFORE YOU START ================ Before installing the software you must unpack the distributed source code. Since you are reading this file, you have probably already succeeded in this task. However, there is a potential for error if you needed to convert the files to the local standard text file format (for example, if you are on MS-DOS you may have converted LF end-of-line to CR/LF). You must apply such conversion to all the files EXCEPT those whose names begin with "test". The test files contain binary data; if you change them in any way then the self-test will give bad results. Please check the last section of this file to see if there are hints for the specific machine or compiler you are using. CONFIGURING THE SOFTWARE ======================== To configure the IJG code for your system, you need to create two files: * jconfig.h: contains values for system-dependent #define symbols. * Makefile: controls the compilation process. (On a non-Unix machine, you may create "project files" or some other substitute for a Makefile. jconfig.h is needed in any environment.) We provide three different ways to generate these files: * On a Unix system, you can just run the "configure" script. * We provide sample jconfig files and makefiles for popular machines; if your machine matches one of the samples, just copy the right sample files to jconfig.h and Makefile. * If all else fails, read the instructions below and make your own files. Configuring the software using the automatic "configure" script --------------------------------------------------------------- If you are on a Unix machine, you can just type ./configure and let the configure script construct appropriate configuration files. If you're using "csh" on an old version of System V, you might need to type sh configure instead to prevent csh from trying to execute configure itself. Expect configure to run for a few minutes, particularly on slower machines; it works by compiling a series of test programs. Configure was created with GNU Autoconf and it follows the usual conventions for GNU configure scripts. It makes a few assumptions that you may want to override. You can do this by providing optional switches to configure: * Configure will build both static and shared libraries, if possible. If you want to build libjpeg only as a static library, say ./configure --disable-shared If you want to build libjpeg only as a shared library, say ./configure --disable-static Configure uses GNU libtool to take care of system-dependent shared library building methods. * Configure will use gcc (GNU C compiler) if it's available, otherwise cc. To force a particular compiler to be selected, use the CC option, for example ./configure CC='cc' The same method can be used to include any unusual compiler switches. For example, on HP-UX you probably want to say ./configure CC='cc -Aa' to get HP's compiler to run in ANSI mode. * The default CFLAGS setting is "-g" for non-gcc compilers, "-g -O2" for gcc. You can override this by saying, for example, ./configure CFLAGS='-O2' if you want to compile without debugging support. * Configure will set up the makefile so that "make install" will install files into /usr/local/bin, /usr/local/man, etc. You can specify an installation prefix other than "/usr/local" by giving configure the option "--prefix=PATH". * If you don't have a lot of swap space, you may need to enable the IJG software's internal virtual memory mechanism. To do this, give the option "--enable-maxmem=N" where N is the default maxmemory limit in megabytes. This is discussed in more detail under "Selecting a memory manager", below. You probably don't need to worry about this on reasonably-sized Unix machines, unless you plan to process very large images. Configure has some other features that are useful if you are cross-compiling or working in a network of multiple machine types; but if you need those features, you probably already know how to use them. Configuring the software using one of the supplied jconfig and makefile files ----------------------------------------------------------------------------- If you have one of these systems, you can just use the provided configuration files: Makefile jconfig file System and/or compiler makefile.manx jconfig.manx Amiga, Manx Aztec C makefile.sas jconfig.sas Amiga, SAS C makeproj.mac jconfig.mac Apple Macintosh, Metrowerks CodeWarrior mak*jpeg.st jconfig.st Atari ST/STE/TT, Pure C or Turbo C makefile.bcc jconfig.bcc MS-DOS or OS/2, Borland C makefile.dj jconfig.dj MS-DOS, DJGPP (Delorie's port of GNU C) makefile.mc6 jconfig.mc6 MS-DOS, Microsoft C (16-bit only) makefile.wat jconfig.wat MS-DOS, OS/2, or Windows NT, Watcom C makefile.vc jconfig.vc Windows NT/95, MS Visual C++ make*.vc6 jconfig.vc Windows NT/95, MS Visual C++ 6 make*.v10 jconfig.vc Windows NT/95, MS Visual C++ 2010 (v10) makefile.mms jconfig.vms Digital VMS, with MMS software makefile.vms jconfig.vms Digital VMS, without MMS software Copy the proper jconfig file to jconfig.h and the makefile to Makefile (or whatever your system uses as the standard makefile name). For more info see the appropriate system-specific hints section near the end of this file. Configuring the software by hand -------------------------------- First, generate a jconfig.h file. If you are moderately familiar with C, the comments in jconfig.txt should be enough information to do this; just copy jconfig.txt to jconfig.h and edit it appropriately. Otherwise, you may prefer to use the ckconfig.c program. You will need to compile and execute ckconfig.c by hand --- we hope you know at least enough to do that. ckconfig.c may not compile the first try (in fact, the whole idea is for it to fail if anything is going to). If you get compile errors, fix them by editing ckconfig.c according to the directions given in ckconfig.c. Once you get it to run, it will write a suitable jconfig.h file, and will also print out some advice about which makefile to use. You may also want to look at the canned jconfig files, if there is one for a system similar to yours. Second, select a makefile and copy it to Makefile (or whatever your system uses as the standard makefile name). The most generic makefiles we provide are makefile.ansi: if your C compiler supports function prototypes makefile.unix: if not. (You have function prototypes if ckconfig.c put "#define HAVE_PROTOTYPES" in jconfig.h.) You may want to start from one of the other makefiles if there is one for a system similar to yours. Look over the selected Makefile and adjust options as needed. In particular you may want to change the CC and CFLAGS definitions. For instance, if you are using GCC, set CC=gcc. If you had to use any compiler switches to get ckconfig.c to work, make sure the same switches are in CFLAGS. If you are on a system that doesn't use makefiles, you'll need to set up project files (or whatever you do use) to compile all the source files and link them into executable files cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom. See the file lists in any of the makefiles to find out which files go into each program. Note that the provided makefiles all make a "library" file libjpeg first, but you don't have to do that if you don't want to; the file lists identify which source files are actually needed for compression, decompression, or both. As a last resort, you can make a batch script that just compiles everything and links it all together; makefile.vms is an example of this (it's for VMS systems that have no make-like utility). Here are comments about some specific configuration decisions you'll need to make: Command line style ------------------ These programs can use a Unix-like command line style which supports redirection and piping, like this: cjpeg inputfile >outputfile cjpeg outputfile source program | cjpeg >outputfile The simpler "two file" command line style is just cjpeg inputfile outputfile You may prefer the two-file style, particularly if you don't have pipes. You MUST use two-file style on any system that doesn't cope well with binary data fed through stdin/stdout; this is true for some MS-DOS compilers, for example. If you're not on a Unix system, it's safest to assume you need two-file style. (But if your compiler provides either the Posix-standard fdopen() library routine or a Microsoft-compatible setmode() routine, you can safely use the Unix command line style, by defining USE_FDOPEN or USE_SETMODE respectively.) To use the two-file style, make jconfig.h say "#define TWO_FILE_COMMANDLINE". Selecting a memory manager -------------------------- The IJG code is capable of working on images that are too big to fit in main memory; data is swapped out to temporary files as necessary. However, the code to do this is rather system-dependent. We provide five different memory managers: * jmemansi.c This version uses the ANSI-standard library routine tmpfile(), which not all non-ANSI systems have. On some systems tmpfile() may put the temporary file in a non-optimal location; if you don't like what it does, use jmemname.c. * jmemname.c This version creates named temporary files. For anything except a Unix machine, you'll need to configure the select_file_name() routine appropriately; see the comments near the head of jmemname.c. If you use this version, define NEED_SIGNAL_CATCHER in jconfig.h to make sure the temp files are removed if the program is aborted. * jmemnobs.c (That stands for No Backing Store :-).) This will compile on almost any system, but it assumes you have enough main memory or virtual memory to hold the biggest images you work with. * jmemdos.c This should be used with most 16-bit MS-DOS compilers. See the system-specific notes about MS-DOS for more info. IMPORTANT: if you use this, define USE_MSDOS_MEMMGR in jconfig.h, and include the assembly file jmemdosa.asm in the programs. The supplied makefiles and jconfig files for 16-bit MS-DOS compilers already do both. * jmemmac.c Custom version for Apple Macintosh; see the system-specific notes for Macintosh for more info. To use a particular memory manager, change the SYSDEPMEM variable in your makefile to equal the corresponding object file name (for example, jmemansi.o or jmemansi.obj for jmemansi.c). If you have plenty of (real or virtual) main memory, just use jmemnobs.c. "Plenty" means about ten bytes for every pixel in the largest images you plan to process, so a lot of systems don't meet this criterion. If yours doesn't, try jmemansi.c first. If that doesn't compile, you'll have to use jmemname.c; be sure to adjust select_file_name() for local conditions. You may also need to change unlink() to remove() in close_backing_store(). Except with jmemnobs.c or jmemmac.c, you need to adjust the DEFAULT_MAX_MEM setting to a reasonable value for your system (either by adding a #define for DEFAULT_MAX_MEM to jconfig.h, or by adding a -D switch to the Makefile). This value limits the amount of data space the program will attempt to allocate. Code and static data space isn't counted, so the actual memory needs for cjpeg or djpeg are typically 100 to 150Kb more than the max-memory setting. Larger max-memory settings reduce the amount of I/O needed to process a large image, but too large a value can result in "insufficient memory" failures. On most Unix machines (and other systems with virtual memory), just set DEFAULT_MAX_MEM to several million and forget it. At the other end of the spectrum, for MS-DOS machines you probably can't go much above 300K to 400K. (On MS-DOS the value refers to conventional memory only. Extended/expanded memory is handled separately by jmemdos.c.) BUILDING THE SOFTWARE ===================== Now you should be able to compile the software. Just say "make" (or whatever's necessary to start the compilation). Have a cup of coffee. Here are some things that could go wrong: If your compiler complains about undefined structures, you should be able to shut it up by putting "#define INCOMPLETE_TYPES_BROKEN" in jconfig.h. If you have trouble with missing system include files or inclusion of the wrong ones, read jinclude.h. This shouldn't happen if you used configure or ckconfig.c to set up jconfig.h. There are a fair number of routines that do not use all of their parameters; some compilers will issue warnings about this, which you can ignore. There are also a few configuration checks that may give "unreachable code" warnings. Any other warning deserves investigation. If you don't have a getenv() library routine, define NO_GETENV. Also see the system-specific hints, below. TESTING THE SOFTWARE ==================== As a quick test of functionality we've included a small sample image in several forms: testorig.jpg Starting point for the djpeg tests. testimg.ppm The output of djpeg testorig.jpg testimg.bmp The output of djpeg -bmp -colors 256 testorig.jpg testimg.jpg The output of cjpeg testimg.ppm testprog.jpg Progressive-mode equivalent of testorig.jpg. testimgp.jpg The output of cjpeg -progressive -optimize testimg.ppm (The first- and second-generation .jpg files aren't identical since the default compression parameters are lossy.) If you can generate duplicates of the testimg* files then you probably have working programs. With most of the makefiles, "make test" will perform the necessary comparisons. If you're using a makefile that doesn't provide the test option, run djpeg and cjpeg by hand and compare the output files to testimg* with whatever binary file comparison tool you have. The files should be bit-for-bit identical. If the programs complain "MAX_ALLOC_CHUNK is wrong, please fix", then you need to reduce MAX_ALLOC_CHUNK to a value that fits in type size_t. Try adding "#define MAX_ALLOC_CHUNK 65520L" to jconfig.h. A less likely configuration error is "ALIGN_TYPE is wrong, please fix": defining ALIGN_TYPE as long should take care of that one. If the cjpeg test run fails with "Missing Huffman code table entry", it's a good bet that you needed to define RIGHT_SHIFT_IS_UNSIGNED. Go back to the configuration step and run ckconfig.c. (This is a good plan for any other test failure, too.) If you are using Unix (one-file) command line style on a non-Unix system, it's a good idea to check that binary I/O through stdin/stdout actually works. You should get the same results from "djpeg out.ppm" as from "djpeg -outfile out.ppm testorig.jpg". Note that the makefiles all use the latter style and therefore do not exercise stdin/stdout! If this check fails, try recompiling with USE_SETMODE or USE_FDOPEN defined. If it still doesn't work, better use two-file style. If you chose a memory manager other than jmemnobs.c, you should test that temporary-file usage works. Try "djpeg -bmp -colors 256 -max 0 testorig.jpg" and make sure its output matches testimg.bmp. If you have any really large images handy, try compressing them with -optimize and/or decompressing with -colors 256 to make sure your DEFAULT_MAX_MEM setting is not too large. NOTE: this is far from an exhaustive test of the JPEG software; some modules, such as 1-pass color quantization, are not exercised at all. It's just a quick test to give you some confidence that you haven't missed something major. INSTALLING THE SOFTWARE ======================= Once you're done with the above steps, you can install the software by copying the executable files (cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom) to wherever you normally install programs. On Unix systems, you'll also want to put the man pages (cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1) in the man-page directory. The pre-fab makefiles don't support this step since there's such a wide variety of installation procedures on different systems. If you generated a Makefile with the "configure" script, you can just say make install to install the programs and their man pages into the standard places. (You'll probably need to be root to do this.) We recommend first saying make -n install to see where configure thought the files should go. You may need to edit the Makefile, particularly if your system's conventions for man page filenames don't match what configure expects. If you want to install the IJG library itself, for use in compiling other programs besides ours, then you need to put the four include files jpeglib.h jerror.h jconfig.h jmorecfg.h into your include-file directory, and put the library file libjpeg.a (extension may vary depending on system) wherever library files go. If you generated a Makefile with "configure", it will do what it thinks is the right thing if you say make install-lib OPTIONAL STUFF ============== Progress monitor: If you like, you can #define PROGRESS_REPORT (in jconfig.h) to enable display of percent-done progress reports. The routine provided in cdjpeg.c merely prints percentages to stderr, but you can customize it to do something fancier. Utah RLE file format support: We distribute the software with support for RLE image files (Utah Raster Toolkit format) disabled, because the RLE support won't compile without the Utah library. If you have URT version 3.1 or later, you can enable RLE support as follows: 1. #define RLE_SUPPORTED in jconfig.h. 2. Add a -I option to CFLAGS in the Makefile for the directory containing the URT .h files (typically the "include" subdirectory of the URT distribution). 3. Add -L... -lrle to LDLIBS in the Makefile, where ... specifies the directory containing the URT "librle.a" file (typically the "lib" subdirectory of the URT distribution). Support for 12-bit-deep pixel data: The JPEG standard allows either 8-bit or 12-bit data precision. (For color, this means 8 or 12 bits per channel, of course.) If you need to work with deeper than 8-bit data, you can compile the IJG code for 12-bit operation. To do so: 1. In jmorecfg.h, define BITS_IN_JSAMPLE as 12 rather than 8. 2. In jconfig.h, undefine BMP_SUPPORTED, RLE_SUPPORTED, and TARGA_SUPPORTED, because the code for those formats doesn't handle 12-bit data and won't even compile. (The PPM code does work, as explained below. The GIF code works too; it scales 8-bit GIF data to and from 12-bit depth automatically.) 3. Compile. Don't expect "make test" to pass, since the supplied test files are for 8-bit data. Currently, 12-bit support does not work on 16-bit-int machines. Note that a 12-bit version will not read 8-bit JPEG files, nor vice versa; so you'll want to keep around a regular 8-bit compilation as well. (Run-time selection of data depth, to allow a single copy that does both, is possible but would probably slow things down considerably; it's very low on our to-do list.) The PPM reader (rdppm.c) can read 12-bit data from either text-format or binary-format PPM and PGM files. Binary-format PPM/PGM files which have a maxval greater than 255 are assumed to use 2 bytes per sample, MSB first (big-endian order). As of early 1995, 2-byte binary format is not officially supported by the PBMPLUS library, but it is expected that a future release of PBMPLUS will support it. Note that the PPM reader will read files of any maxval regardless of the BITS_IN_JSAMPLE setting; incoming data is automatically rescaled to either maxval=255 or maxval=4095 as appropriate for the cjpeg bit depth. The PPM writer (wrppm.c) will normally write 2-byte binary PPM or PGM format, maxval 4095, when compiled with BITS_IN_JSAMPLE=12. Since this format is not yet widely supported, you can disable it by compiling wrppm.c with PPM_NORAWWORD defined; then the data is scaled down to 8 bits to make a standard 1-byte/sample PPM or PGM file. (Yes, this means still another copy of djpeg to keep around. But hopefully you won't need it for very long. Poskanzer's supposed to get that new PBMPLUS release out Real Soon Now.) Of course, if you are working with 12-bit data, you probably have it stored in some other, nonstandard format. In that case you'll probably want to write your own I/O modules to read and write your format. Note that a 12-bit version of cjpeg always runs in "-optimize" mode, in order to generate valid Huffman tables. This is necessary because our default Huffman tables only cover 8-bit data. Removing code: If you need to make a smaller version of the JPEG software, some optional functions can be removed at compile time. See the xxx_SUPPORTED #defines in jconfig.h and jmorecfg.h. If at all possible, we recommend that you leave in decoder support for all valid JPEG files, to ensure that you can read anyone's output. Taking out support for image file formats that you don't use is the most painless way to make the programs smaller. Another possibility is to remove some of the DCT methods: in particular, the "IFAST" method may not be enough faster than the others to be worth keeping on your machine. (If you do remove ISLOW or IFAST, be sure to redefine JDCT_DEFAULT or JDCT_FASTEST to a supported method, by adding a #define in jconfig.h.) OPTIMIZATION ============ Unless you own a Cray, you'll probably be interested in making the JPEG software go as fast as possible. This section covers some machine-dependent optimizations you may want to try. We suggest that before trying any of this, you first get the basic installation to pass the self-test step. Repeat the self-test after any optimization to make sure that you haven't broken anything. The integer DCT routines perform a lot of multiplications. These multiplications must yield 32-bit results, but none of their input values are more than 16 bits wide. On many machines, notably the 680x0 and 80x86 CPUs, a 16x16=>32 bit multiply instruction is faster than a full 32x32=>32 bit multiply. Unfortunately there is no portable way to specify such a multiplication in C, but some compilers can generate one when you use the right combination of casts. See the MULTIPLYxxx macro definitions in jdct.h. If your compiler makes "int" be 32 bits and "short" be 16 bits, defining SHORTxSHORT_32 is fairly likely to work. When experimenting with alternate definitions, be sure to test not only whether the code still works (use the self-test), but also whether it is actually faster --- on some compilers, alternate definitions may compute the right answer, yet be slower than the default. Timing cjpeg on a large PGM (grayscale) input file is the best way to check this, as the DCT will be the largest fraction of the runtime in that mode. (Note: some of the distributed compiler-specific jconfig files already contain #define switches to select appropriate MULTIPLYxxx definitions.) If your machine has sufficiently fast floating point hardware, you may find that the float DCT method is faster than the integer DCT methods, even after tweaking the integer multiply macros. In that case you may want to make the float DCT be the default method. (The only objection to this is that float DCT results may vary slightly across machines.) To do that, add "#define JDCT_DEFAULT JDCT_FLOAT" to jconfig.h. Even if you don't change the default, you should redefine JDCT_FASTEST, which is the method selected by djpeg's -fast switch. Don't forget to update the documentation files (usage.txt and/or cjpeg.1, djpeg.1) to agree with what you've done. If access to "short" arrays is slow on your machine, it may be a win to define type JCOEF as int rather than short. This will cost a good deal of memory though, particularly in some multi-pass modes, so don't do it unless you have memory to burn and short is REALLY slow. If your compiler can compile function calls in-line, make sure the INLINE macro in jmorecfg.h is defined as the keyword that marks a function inline-able. Some compilers have a switch that tells the compiler to inline any function it thinks is profitable (e.g., -finline-functions for gcc). Enabling such a switch is likely to make the compiled code bigger but faster. In general, it's worth trying the maximum optimization level of your compiler, and experimenting with any optional optimizations such as loop unrolling. (Unfortunately, far too many compilers have optimizer bugs ... be prepared to back off if the code fails self-test.) If you do any experimentation along these lines, please report the optimal settings to jpeg-info@jpegclub.org so we can mention them in future releases. Be sure to specify your machine and compiler version. HINTS FOR SPECIFIC SYSTEMS ========================== We welcome reports on changes needed for systems not mentioned here. Submit 'em to jpeg-info@jpegclub.org. Also, if configure or ckconfig.c is wrong about how to configure the JPEG software for your system, please let us know. Acorn RISC OS: (Thanks to Simon Middleton for these hints on compiling with Desktop C.) After renaming the files according to Acorn conventions, take a copy of makefile.ansi, change all occurrences of 'libjpeg.a' to 'libjpeg.o' and change these definitions as indicated: CFLAGS= -throwback -IC: -Wn LDLIBS=C:o.Stubs SYSDEPMEM=jmemansi.o LN=Link AR=LibFile -c -o Also add a new line '.c.o:; $(cc) $< $(cflags) -c -o $@'. Remove the lines '$(RM) libjpeg.o' and '$(AR2) libjpeg.o' and the 'jconfig.h' dependency section. Copy jconfig.txt to jconfig.h. Edit jconfig.h to define TWO_FILE_COMMANDLINE and CHAR_IS_UNSIGNED. Run the makefile using !AMU not !Make. If you want to use the 'clean' and 'test' makefile entries then you will have to fiddle with the syntax a bit and rename the test files. Amiga: SAS C 6.50 reportedly is too buggy to compile the IJG code properly. A patch to update to 6.51 is available from SAS or AmiNet FTP sites. The supplied config files are set up to use jmemname.c as the memory manager, with temporary files being created on the device named by "JPEGTMP:". Atari ST/STE/TT: Copy the project files makcjpeg.st, makdjpeg.st, maktjpeg.st, and makljpeg.st to cjpeg.prj, djpeg.prj, jpegtran.prj, and libjpeg.prj respectively. The project files should work as-is with Pure C. For Turbo C, change library filenames "pc..." to "tc..." in each project file. Note that libjpeg.prj selects jmemansi.c as the recommended memory manager. You'll probably want to adjust the DEFAULT_MAX_MEM setting --- you want it to be a couple hundred K less than your normal free memory. Put "#define DEFAULT_MAX_MEM nnnn" into jconfig.h to do this. To use the 68881/68882 coprocessor for the floating point DCT, add the compiler option "-8" to the project files and replace pcfltlib.lib with pc881lib.lib in cjpeg.prj and djpeg.prj. Or if you don't have a coprocessor, you may prefer to remove the float DCT code by undefining DCT_FLOAT_SUPPORTED in jmorecfg.h (since without a coprocessor, the float code will be too slow to be useful). In that case, you can delete pcfltlib.lib from the project files. Note that you must make libjpeg.lib before making cjpeg.ttp, djpeg.ttp, or jpegtran.ttp. You'll have to perform the self-test by hand. We haven't bothered to include project files for rdjpgcom and wrjpgcom. Those source files should just be compiled by themselves; they don't depend on the JPEG library. You can use the default.prj project file of the Pure C distribution to make the programs. There is a bug in some older versions of the Turbo C library which causes the space used by temporary files created with "tmpfile()" not to be freed after an abnormal program exit. If you check your disk afterwards, you will find cluster chains that are allocated but not used by a file. This should not happen in cjpeg/djpeg/jpegtran, since we enable a signal catcher to explicitly close temp files before exiting. But if you use the JPEG library with your own code, be sure to supply a signal catcher, or else use a different system-dependent memory manager. Cray: Should you be so fortunate as to be running JPEG on a Cray YMP, there is a compiler bug in old versions of Cray's Standard C (prior to 3.1). If you still have an old compiler, you'll need to insert a line reading "#pragma novector" just before the loop for (i = 1; i <= (int) htbl->bits[l]; i++) huffsize[p++] = (char) l; in fix_huff_tbl (in V5beta1, line 204 of jchuff.c and line 176 of jdhuff.c). [This bug may or may not still occur with the current IJG code, but it's probably a dead issue anyway...] HP-UX: If you have HP-UX 7.05 or later with the "software development" C compiler, you should run the compiler in ANSI mode. If using the configure script, say ./configure CC='cc -Aa' (or -Ae if you prefer). If configuring by hand, use makefile.ansi and add "-Aa" to the CFLAGS line in the makefile. If you have a pre-7.05 system, or if you are using the non-ANSI C compiler delivered with a minimum HP-UX system, then you must use makefile.unix (and do NOT add -Aa); or just run configure without the CC option. On HP 9000 series 800 machines, the HP C compiler is buggy in revisions prior to A.08.07. If you get complaints about "not a typedef name", you'll have to use makefile.unix, or run configure without the CC option. Macintosh, generic comments: The supplied user-interface files (cjpeg.c, djpeg.c, etc) are set up to provide a Unix-style command line interface. You can use this interface on the Mac by means of the ccommand() library routine provided by Metrowerks CodeWarrior or Think C. This is only appropriate for testing the library, however; to make a user-friendly equivalent of cjpeg/djpeg you'd really want to develop a Mac-style user interface. There isn't a complete example available at the moment, but there are some helpful starting points: 1. Sam Bushell's free "To JPEG" applet provides drag-and-drop conversion to JPEG under System 7 and later. This only illustrates how to use the compression half of the library, but it does a very nice job of that part. The CodeWarrior source code is available from http://www.pobox.com/~jsam. 2. Jim Brunner prepared a Mac-style user interface for both compression and decompression. Unfortunately, it hasn't been updated since IJG v4, and the library's API has changed considerably since then. Still it may be of some help, particularly as a guide to compiling the IJG code under Think C. Jim's code is available from the Info-Mac archives, at sumex-aim.stanford.edu or mirrors thereof; see file /info-mac/dev/src/jpeg-convert-c.hqx. jmemmac.c is the recommended memory manager back end for Macintosh. It uses NewPtr/DisposePtr instead of malloc/free, and has a Mac-specific implementation of jpeg_mem_available(). It also creates temporary files that follow Mac conventions. (That part of the code relies on System-7-or-later OS functions. See the comments in jmemmac.c if you need to run it on System 6.) NOTE that USE_MAC_MEMMGR must be defined in jconfig.h to use jmemmac.c. You can also use jmemnobs.c, if you don't care about handling images larger than available memory. If you use any memory manager back end other than jmemmac.c, we recommend replacing "malloc" and "free" by "NewPtr" and "DisposePtr", because Mac C libraries often have peculiar implementations of malloc/free. (For instance, free() may not return the freed space to the Mac Memory Manager. This is undesirable for the IJG code because jmemmgr.c already clumps space requests.) Macintosh, Metrowerks CodeWarrior: The Unix-command-line-style interface can be used by defining USE_CCOMMAND. You'll also need to define TWO_FILE_COMMANDLINE to avoid stdin/stdout. This means that when using the cjpeg/djpeg programs, you'll have to type the input and output file names in the "Arguments" text-edit box, rather than using the file radio buttons. (Perhaps USE_FDOPEN or USE_SETMODE would eliminate the problem, but I haven't heard from anyone who's tried it.) On 680x0 Macs, Metrowerks defines type "double" as a 10-byte IEEE extended float. jmemmgr.c won't like this: it wants sizeof(ALIGN_TYPE) to be a power of 2. Add "#define ALIGN_TYPE long" to jconfig.h to eliminate the complaint. The supplied configuration file jconfig.mac can be used for your jconfig.h; it includes all the recommended symbol definitions. If you have AppleScript installed, you can run the supplied script makeproj.mac to create CodeWarrior project files for the library and the testbed applications, then build the library and applications. (Thanks to Dan Sears and Don Agro for this nifty hack, which saves us from trying to maintain CodeWarrior project files as part of the IJG distribution...) Macintosh, Think C: The documentation in Jim Brunner's "JPEG Convert" source code (see above) includes detailed build instructions for Think C; it's probably somewhat out of date for the current release, but may be helpful. If you want to build the minimal command line version, proceed as follows. You'll have to prepare project files for the programs; we don't include any in the distribution since they are not text files. Use the file lists in any of the supplied makefiles as a guide. Also add the ANSI and Unix C libraries in a separate segment. You may need to divide the JPEG files into more than one segment; we recommend dividing compression and decompression modules. Define USE_CCOMMAND in jconfig.h so that the ccommand() routine is called. You must also define TWO_FILE_COMMANDLINE because stdin/stdout don't handle binary data correctly. On 680x0 Macs, Think C defines type "double" as a 12-byte IEEE extended float. jmemmgr.c won't like this: it wants sizeof(ALIGN_TYPE) to be a power of 2. Add "#define ALIGN_TYPE long" to jconfig.h to eliminate the complaint. jconfig.mac should work as a jconfig.h configuration file for Think C, but the makeproj.mac AppleScript script is specific to CodeWarrior. Sorry. MIPS R3000: MIPS's cc version 1.31 has a rather nasty optimization bug. Don't use -O if you have that compiler version. (Use "cc -V" to check the version.) Note that the R3000 chip is found in workstations from DEC and others. MS-DOS, generic comments for 16-bit compilers: The IJG code is designed to work well in 80x86 "small" or "medium" memory models (i.e., data pointers are 16 bits unless explicitly declared "far"; code pointers can be either size). You may be able to use small model to compile cjpeg or djpeg by itself, but you will probably have to use medium model for any larger application. This won't make much difference in performance. You *will* take a noticeable performance hit if you use a large-data memory model, and you should avoid "huge" model if at all possible. Be sure that NEED_FAR_POINTERS is defined in jconfig.h if you use a small-data memory model; be sure it is NOT defined if you use a large-data model. (The supplied makefiles and jconfig files for Borland and Microsoft C compile in medium model and define NEED_FAR_POINTERS.) The DOS-specific memory manager, jmemdos.c, should be used if possible. It needs some assembly-code routines which are in jmemdosa.asm; make sure your makefile assembles that file and includes it in the library. If you don't have a suitable assembler, you can get pre-assembled object files for jmemdosa by FTP from ftp.uu.net:/graphics/jpeg/jdosaobj.zip. (DOS-oriented distributions of the IJG source code often include these object files.) When using jmemdos.c, jconfig.h must define USE_MSDOS_MEMMGR and must set MAX_ALLOC_CHUNK to less than 64K (65520L is a typical value). If your C library's far-heap malloc() can't allocate blocks that large, reduce MAX_ALLOC_CHUNK to whatever it can handle. If you can't use jmemdos.c for some reason --- for example, because you don't have an assembler to assemble jmemdosa.asm --- you'll have to fall back to jmemansi.c or jmemname.c. You'll probably still need to set MAX_ALLOC_CHUNK in jconfig.h, because most DOS C libraries won't malloc() more than 64K at a time. IMPORTANT: if you use jmemansi.c or jmemname.c, you will have to compile in a large-data memory model in order to get the right stdio library. Too bad. wrjpgcom needs to be compiled in large model, because it malloc()s a 64KB work area to hold the comment text. If your C library's malloc can't handle that, reduce MAX_COM_LENGTH as necessary in wrjpgcom.c. Most MS-DOS compilers treat stdin/stdout as text files, so you must use two-file command line style. But if your compiler has either fdopen() or setmode(), you can use one-file style if you like. To do this, define USE_SETMODE or USE_FDOPEN so that stdin/stdout will be set to binary mode. (USE_SETMODE seems to work with more DOS compilers than USE_FDOPEN.) You should test that I/O through stdin/stdout produces the same results as I/O to explicitly named files... the "make test" procedures in the supplied makefiles do NOT use stdin/stdout. MS-DOS, generic comments for 32-bit compilers: None of the above comments about memory models apply if you are using a 32-bit flat-memory-space environment, such as DJGPP or Watcom C. (And you should use one if you have it, as performance will be much better than 8086-compatible code!) For flat-memory-space compilers, do NOT define NEED_FAR_POINTERS, and do NOT use jmemdos.c. Use jmemnobs.c if the environment supplies adequate virtual memory, otherwise use jmemansi.c or jmemname.c. You'll still need to be careful about binary I/O through stdin/stdout. See the last paragraph of the previous section. MS-DOS, Borland C: Be sure to convert all the source files to DOS text format (CR/LF newlines). Although Borland C will often work OK with unmodified Unix (LF newlines) source files, sometimes it will give bogus compile errors. "Illegal character '#'" is the most common such error. (This is true with Borland C 3.1, but perhaps is fixed in newer releases.) If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE. jconfig.bcc already includes #define USE_SETMODE to make this work. (fdopen does not work correctly.) MS-DOS, Microsoft C: makefile.mc6 works with Microsoft C, DOS Visual C++, etc. It should only be used if you want to build a 16-bit (small or medium memory model) program. If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE. jconfig.mc6 already includes #define USE_SETMODE to make this work. (fdopen does not work correctly.) Note that this makefile assumes that the working copy of itself is called "makefile". If you want to call it something else, say "makefile.mak", be sure to adjust the dependency line that reads "$(RFILE) : makefile". Otherwise the make will fail because it doesn't know how to create "makefile". Worse, some releases of Microsoft's make utilities give an incorrect error message in this situation. Old versions of MS C fail with an "out of macro expansion space" error because they can't cope with the macro TRACEMS8 (defined in jerror.h). If this happens to you, the easiest solution is to change TRACEMS8 to expand to nothing. You'll lose the ability to dump out JPEG coefficient tables with djpeg -debug -debug, but at least you can compile. Original MS C 6.0 is very buggy; it compiles incorrect code unless you turn off optimization entirely (remove -O from CFLAGS). 6.00A is better, but it still generates bad code if you enable loop optimizations (-Ol or -Ox). MS C 8.0 crashes when compiling jquant1.c with optimization switch /Oo ... which is on by default. To work around this bug, compile that one file with /Oo-. Microsoft Windows (all versions), generic comments: Some Windows system include files define typedef boolean as "unsigned char". The IJG code also defines typedef boolean, but we make it "int" by default. This doesn't affect the IJG programs because we don't import those Windows include files. But if you use the JPEG library in your own program, and some of your program's files import one definition of boolean while some import the other, you can get all sorts of mysterious problems. A good preventive step is to make the IJG library use "unsigned char" for boolean. To do that, add something like this to your jconfig.h file: /* Define "boolean" as unsigned char, not int, per Windows custom */ #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ typedef unsigned char boolean; #endif #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ (This is already in jconfig.vc, by the way.) windef.h contains the declarations #define far #define FAR far Since jmorecfg.h tries to define FAR as empty, you may get a compiler warning if you include both jpeglib.h and windef.h (which windows.h includes). To suppress the warning, you can put "#ifndef FAR"/"#endif" around the line "#define FAR" in jmorecfg.h. (Something like this is already in jmorecfg.h, by the way.) When using the library in a Windows application, you will almost certainly want to modify or replace the error handler module jerror.c, since our default error handler does a couple of inappropriate things: 1. it tries to write error and warning messages on stderr; 2. in event of a fatal error, it exits by calling exit(). A simple stopgap solution for problem 1 is to replace the line fprintf(stderr, "%s\n", buffer); (in output_message in jerror.c) with MessageBox(GetActiveWindow(),buffer,"JPEG Error",MB_OK|MB_ICONERROR); It's highly recommended that you at least do that much, since otherwise error messages will disappear into nowhere. (Beginning with IJG v6b, this code is already present in jerror.c; just define USE_WINDOWS_MESSAGEBOX in jconfig.h to enable it.) The proper solution for problem 2 is to return control to your calling application after a library error. This can be done with the setjmp/longjmp technique discussed in libjpeg.txt and illustrated in example.c. (NOTE: some older Windows C compilers provide versions of setjmp/longjmp that don't actually work under Windows. You may need to use the Windows system functions Catch and Throw instead.) The recommended memory manager under Windows is jmemnobs.c; in other words, let Windows do any virtual memory management needed. You should NOT use jmemdos.c nor jmemdosa.asm under Windows. For Windows 3.1, we recommend compiling in medium or large memory model; for newer Windows versions, use a 32-bit flat memory model. (See the MS-DOS sections above for more info about memory models.) In the 16-bit memory models only, you'll need to put #define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */ into jconfig.h to limit allocation chunks to 64Kb. (Without that, you'd have to use huge memory model, which slows things down unnecessarily.) jmemnobs.c works without modification in large or flat memory models, but to use medium model, you need to modify its jpeg_get_large and jpeg_free_large routines to allocate far memory. In any case, you might like to replace its calls to malloc and free with direct calls on Windows memory allocation functions. You may also want to modify jdatasrc.c and jdatadst.c to use Windows file operations rather than fread/fwrite. This is only necessary if your C compiler doesn't provide a competent implementation of C stdio functions. You might want to tweak the RGB_xxx macros in jmorecfg.h so that the library will accept or deliver color pixels in BGR sample order, not RGB; BGR order is usually more convenient under Windows. Note that this change will break the sample applications cjpeg/djpeg, but the library itself works fine. Many people want to convert the IJG library into a DLL. This is reasonably straightforward, but watch out for the following: 1. Don't try to compile as a DLL in small or medium memory model; use large model, or even better, 32-bit flat model. Many places in the IJG code assume the address of a local variable is an ordinary (not FAR) pointer; that isn't true in a medium-model DLL. 2. Microsoft C cannot pass file pointers between applications and DLLs. (See Microsoft Knowledge Base, PSS ID Number Q50336.) So jdatasrc.c and jdatadst.c don't work if you open a file in your application and then pass the pointer to the DLL. One workaround is to make jdatasrc.c/jdatadst.c part of your main application rather than part of the DLL. 3. You'll probably need to modify the macros GLOBAL() and EXTERN() to attach suitable linkage keywords to the exported routine names. Similarly, you'll want to modify METHODDEF() and JMETHOD() to ensure function pointers are declared in a way that lets application routines be called back through the function pointers. These macros are in jmorecfg.h. Typical definitions for a 16-bit DLL are: #define GLOBAL(type) type _far _pascal _loadds _export #define EXTERN(type) extern type _far _pascal _loadds #define METHODDEF(type) static type _far _pascal #define JMETHOD(type,methodname,arglist) \ type (_far _pascal *methodname) arglist For a 32-bit DLL you may want something like #define GLOBAL(type) __declspec(dllexport) type #define EXTERN(type) extern __declspec(dllexport) type Although not all the GLOBAL routines are actually intended to be called by the application, the performance cost of making them all DLL entry points is negligible. The unmodified IJG library presents a very C-specific application interface, so the resulting DLL is only usable from C or C++ applications. There has been some talk of writing wrapper code that would present a simpler interface usable from other languages, such as Visual Basic. This is on our to-do list but hasn't been very high priority --- any volunteers out there? Microsoft Windows, Borland C: The provided jconfig.bcc should work OK in a 32-bit Windows environment, but you'll need to tweak it in a 16-bit environment (you'd need to define NEED_FAR_POINTERS and MAX_ALLOC_CHUNK). Beware that makefile.bcc will need alteration if you want to use it for Windows --- in particular, you should use jmemnobs.c not jmemdos.c under Windows. Borland C++ 4.5 fails with an internal compiler error when trying to compile jdmerge.c in 32-bit mode. If enough people complain, perhaps Borland will fix it. In the meantime, the simplest known workaround is to add a redundant definition of the variable range_limit in h2v1_merged_upsample(), at the head of the block that handles odd image width (about line 268 in v6 jdmerge.c): /* If image width is odd, do the last output column separately */ if (cinfo->output_width & 1) { register JSAMPLE * range_limit = cinfo->sample_range_limit; /* ADD THIS */ cb = GETJSAMPLE(*inptr1); Pretty bizarre, especially since the very similar routine h2v2_merged_upsample doesn't trigger the bug. Recent reports suggest that this bug does not occur with "bcc32a" (the Pentium-optimized version of the compiler). Another report from a user of Borland C 4.5 was that incorrect code (leading to a color shift in processed images) was produced if any of the following optimization switch combinations were used: -Ot -Og -Ot -Op -Ot -Om So try backing off on optimization if you see such a problem. (Are there several different releases all numbered "4.5"??) Microsoft Windows, Microsoft Visual C++: jconfig.vc should work OK with any Microsoft compiler for a 32-bit memory model. makefile.vc is intended for command-line use. (If you are using the Developer Studio environment, you may prefer the DevStudio project files; see below.) IJG JPEG 7 adds extern "C" to jpeglib.h. This avoids the need to put extern "C" { ... } around #include "jpeglib.h" in your C++ application. You can also force VC++ to treat the library as C++ code by renaming all the *.c files to *.cpp (and adjusting the makefile to match). In this case you also need to define the symbol DONT_USE_EXTERN_C in the configuration to prevent jpeglib.h from using extern "C". Microsoft Windows, Microsoft Visual C++ 6 Developer Studio: We include makefiles that should work as project files in DevStudio 6.0 or later. There is a library makefile that builds the IJG library as a static Win32 library, and application makefiles that build the sample applications as Win32 console applications. (Even if you only want the library, we recommend building the applications so that you can run the self-test.) To use: 1. Open the command prompt, change to the main directory and execute the command line NMAKE /f makefile.vc setup-vc6 This will move jconfig.vc to jconfig.h and makefiles to project files. (Note that the renaming is critical!) 2. Open the workspace file jpeg.dsw, build the library project. (If you are using DevStudio more recent than 6.0, you'll probably get a message saying that the project files are being updated.) 3. Open the workspace file apps.dsw, build the application projects. 4. To perform the self-test, execute the command line NMAKE /f makefile.vc test-build 5. Move the application .exe files from `app`\Release to an appropriate location on your path. Microsoft Windows, Microsoft Visual C++ 2010 Developer Studio (v10): We include makefiles that should work as project files in Visual Studio 2010 or later. There is a library makefile that builds the IJG library as a static Win32 library, and application makefiles that build the sample applications as Win32 console applications. (Even if you only want the library, we recommend building the applications so that you can run the self-test.) To use: 1. Open the command prompt, change to the main directory and execute the command line NMAKE /f makefile.vc setup-v10 This will move jconfig.vc to jconfig.h and makefiles to project files. (Note that the renaming is critical!) 2. Open the solution file jpeg.sln, build the library project. (If you are using Visual Studio more recent than 2010 (v10), you'll probably get a message saying that the project files are being updated.) 3. Open the solution file apps.sln, build the application projects. 4. To perform the self-test, execute the command line NMAKE /f makefile.vc test-build 5. Move the application .exe files from `app`\Release to an appropriate location on your path. Note: There seems to be an optimization bug in the compiler which causes the self-test to fail with the color quantization option. We have disabled optimization for the file jquant2.c in the library project file which causes the self-test to pass properly. OS/2, Borland C++: Watch out for optimization bugs in older Borland compilers; you may need to back off the optimization switch settings. See the comments in makefile.bcc. SGI: On some SGI systems, you may need to set "AR2= ar -ts" in the Makefile. If you are using configure, you can do this by saying ./configure RANLIB='ar -ts' This change is not needed on all SGIs. Use it only if the make fails at the stage of linking the completed programs. On the MIPS R4000 architecture (Indy, etc.), the compiler option "-mips2" reportedly speeds up the float DCT method substantially, enough to make it faster than the default int method (but still slower than the fast int method). If you use -mips2, you may want to alter the default DCT method to be float. To do this, put "#define JDCT_DEFAULT JDCT_FLOAT" in jconfig.h. VMS: On an Alpha/VMS system with MMS, be sure to use the "/Marco=Alpha=1" qualifier with MMS when building the JPEG package. VAX/VMS v5.5-1 may have problems with the test step of the build procedure reporting differences when it compares the original and test images. If the error points to the last block of the files, it is most likely bogus and may be safely ignored. It seems to be because the files are Stream_LF and Backup/Compare has difficulty with the (presumably) null padded files. This problem was not observed on VAX/VMS v6.1 or AXP/VMS v6.1. jpeg-8d1/jidctflt.c0000644000175000017500000002017711340210034012765 0ustar billbill/* * jidctflt.c * * Copyright (C) 1994-1998, Thomas G. Lane. * Modified 2010 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a floating-point implementation of the * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine * must also perform dequantization of the input coefficients. * * This implementation should be more accurate than either of the integer * IDCT implementations. However, it may not give the same results on all * machines because of differences in roundoff behavior. Speed will depend * on the hardware's floating point capacity. * * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT * on each row (or vice versa, but it's more convenient to emit a row at * a time). Direct algorithms are also available, but they are much more * complex and seem not to be any faster when reduced to code. * * This implementation is based on Arai, Agui, and Nakajima's algorithm for * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in * Japanese, but the algorithm is described in the Pennebaker & Mitchell * JPEG textbook (see REFERENCES section in file README). The following code * is based directly on figure 4-8 in P&M. * While an 8-point DCT cannot be done in less than 11 multiplies, it is * possible to arrange the computation so that many of the multiplies are * simple scalings of the final outputs. These multiplies can then be * folded into the multiplications or divisions by the JPEG quantization * table entries. The AA&N method leaves only 5 multiplies and 29 adds * to be done in the DCT itself. * The primary disadvantage of this method is that with a fixed-point * implementation, accuracy is lost due to imprecise representation of the * scaled quantization values. However, that problem does not arise if * we use floating point arithmetic. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ #ifdef DCT_FLOAT_SUPPORTED /* * This module is specialized to the case DCTSIZE = 8. */ #if DCTSIZE != 8 Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ #endif /* Dequantize a coefficient by multiplying it by the multiplier-table * entry; produce a float result. */ #define DEQUANTIZE(coef,quantval) (((FAST_FLOAT) (coef)) * (quantval)) /* * Perform dequantization and inverse DCT on one block of coefficients. */ GLOBAL(void) jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) { FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; FAST_FLOAT tmp10, tmp11, tmp12, tmp13; FAST_FLOAT z5, z10, z11, z12, z13; JCOEFPTR inptr; FLOAT_MULT_TYPE * quantptr; FAST_FLOAT * wsptr; JSAMPROW outptr; JSAMPLE *range_limit = cinfo->sample_range_limit; int ctr; FAST_FLOAT workspace[DCTSIZE2]; /* buffers data between passes */ /* Pass 1: process columns from input, store into work array. */ inptr = coef_block; quantptr = (FLOAT_MULT_TYPE *) compptr->dct_table; wsptr = workspace; for (ctr = DCTSIZE; ctr > 0; ctr--) { /* Due to quantization, we will usually find that many of the input * coefficients are zero, especially the AC terms. We can exploit this * by short-circuiting the IDCT calculation for any column in which all * the AC terms are zero. In that case each output is equal to the * DC coefficient (with scale factor as needed). * With typical images and quantization tables, half or more of the * column DCT calculations can be simplified this way. */ if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) { /* AC terms all zero */ FAST_FLOAT dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); wsptr[DCTSIZE*0] = dcval; wsptr[DCTSIZE*1] = dcval; wsptr[DCTSIZE*2] = dcval; wsptr[DCTSIZE*3] = dcval; wsptr[DCTSIZE*4] = dcval; wsptr[DCTSIZE*5] = dcval; wsptr[DCTSIZE*6] = dcval; wsptr[DCTSIZE*7] = dcval; inptr++; /* advance pointers to next column */ quantptr++; wsptr++; continue; } /* Even part */ tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); tmp10 = tmp0 + tmp2; /* phase 3 */ tmp11 = tmp0 - tmp2; tmp13 = tmp1 + tmp3; /* phases 5-3 */ tmp12 = (tmp1 - tmp3) * ((FAST_FLOAT) 1.414213562) - tmp13; /* 2*c4 */ tmp0 = tmp10 + tmp13; /* phase 2 */ tmp3 = tmp10 - tmp13; tmp1 = tmp11 + tmp12; tmp2 = tmp11 - tmp12; /* Odd part */ tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); z13 = tmp6 + tmp5; /* phase 6 */ z10 = tmp6 - tmp5; z11 = tmp4 + tmp7; z12 = tmp4 - tmp7; tmp7 = z11 + z13; /* phase 5 */ tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); /* 2*c4 */ z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */ tmp10 = z5 - z12 * ((FAST_FLOAT) 1.082392200); /* 2*(c2-c6) */ tmp12 = z5 - z10 * ((FAST_FLOAT) 2.613125930); /* 2*(c2+c6) */ tmp6 = tmp12 - tmp7; /* phase 2 */ tmp5 = tmp11 - tmp6; tmp4 = tmp10 - tmp5; wsptr[DCTSIZE*0] = tmp0 + tmp7; wsptr[DCTSIZE*7] = tmp0 - tmp7; wsptr[DCTSIZE*1] = tmp1 + tmp6; wsptr[DCTSIZE*6] = tmp1 - tmp6; wsptr[DCTSIZE*2] = tmp2 + tmp5; wsptr[DCTSIZE*5] = tmp2 - tmp5; wsptr[DCTSIZE*3] = tmp3 + tmp4; wsptr[DCTSIZE*4] = tmp3 - tmp4; inptr++; /* advance pointers to next column */ quantptr++; wsptr++; } /* Pass 2: process rows from work array, store into output array. */ wsptr = workspace; for (ctr = 0; ctr < DCTSIZE; ctr++) { outptr = output_buf[ctr] + output_col; /* Rows of zeroes can be exploited in the same way as we did with columns. * However, the column calculation has created many nonzero AC terms, so * the simplification applies less often (typically 5% to 10% of the time). * And testing floats for zero is relatively expensive, so we don't bother. */ /* Even part */ /* Apply signed->unsigned and prepare float->int conversion */ z5 = wsptr[0] + ((FAST_FLOAT) CENTERJSAMPLE + (FAST_FLOAT) 0.5); tmp10 = z5 + wsptr[4]; tmp11 = z5 - wsptr[4]; tmp13 = wsptr[2] + wsptr[6]; tmp12 = (wsptr[2] - wsptr[6]) * ((FAST_FLOAT) 1.414213562) - tmp13; tmp0 = tmp10 + tmp13; tmp3 = tmp10 - tmp13; tmp1 = tmp11 + tmp12; tmp2 = tmp11 - tmp12; /* Odd part */ z13 = wsptr[5] + wsptr[3]; z10 = wsptr[5] - wsptr[3]; z11 = wsptr[1] + wsptr[7]; z12 = wsptr[1] - wsptr[7]; tmp7 = z11 + z13; tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */ tmp10 = z5 - z12 * ((FAST_FLOAT) 1.082392200); /* 2*(c2-c6) */ tmp12 = z5 - z10 * ((FAST_FLOAT) 2.613125930); /* 2*(c2+c6) */ tmp6 = tmp12 - tmp7; tmp5 = tmp11 - tmp6; tmp4 = tmp10 - tmp5; /* Final output stage: float->int conversion and range-limit */ outptr[0] = range_limit[((int) (tmp0 + tmp7)) & RANGE_MASK]; outptr[7] = range_limit[((int) (tmp0 - tmp7)) & RANGE_MASK]; outptr[1] = range_limit[((int) (tmp1 + tmp6)) & RANGE_MASK]; outptr[6] = range_limit[((int) (tmp1 - tmp6)) & RANGE_MASK]; outptr[2] = range_limit[((int) (tmp2 + tmp5)) & RANGE_MASK]; outptr[5] = range_limit[((int) (tmp2 - tmp5)) & RANGE_MASK]; outptr[3] = range_limit[((int) (tmp3 + tmp4)) & RANGE_MASK]; outptr[4] = range_limit[((int) (tmp3 - tmp4)) & RANGE_MASK]; wsptr += DCTSIZE; /* advance pointer to next row */ } } #endif /* DCT_FLOAT_SUPPORTED */ jpeg-8d1/wrrle.c0000644000175000017500000002203206073531102012316 0ustar billbill/* * wrrle.c * * Copyright (C) 1991-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to write output images in RLE format. * The Utah Raster Toolkit library is required (version 3.1 or later). * * These routines may need modification for non-Unix environments or * specialized applications. As they stand, they assume output to * an ordinary stdio stream. * * Based on code contributed by Mike Lijewski, * with updates from Robert Hutchinson. */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef RLE_SUPPORTED /* rle.h is provided by the Utah Raster Toolkit. */ #include /* * We assume that JSAMPLE has the same representation as rle_pixel, * to wit, "unsigned char". Hence we can't cope with 12- or 16-bit samples. */ #if BITS_IN_JSAMPLE != 8 Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ #endif /* * Since RLE stores scanlines bottom-to-top, we have to invert the image * from JPEG's top-to-bottom order. To do this, we save the outgoing data * in a virtual array during put_pixel_row calls, then actually emit the * RLE file during finish_output. */ /* * For now, if we emit an RLE color map then it is always 256 entries long, * though not all of the entries need be used. */ #define CMAPBITS 8 #define CMAPLENGTH (1<<(CMAPBITS)) typedef struct { struct djpeg_dest_struct pub; /* public fields */ jvirt_sarray_ptr image; /* virtual array to store the output image */ rle_map *colormap; /* RLE-style color map, or NULL if none */ rle_pixel **rle_row; /* To pass rows to rle_putrow() */ } rle_dest_struct; typedef rle_dest_struct * rle_dest_ptr; /* Forward declarations */ METHODDEF(void) rle_put_pixel_rows JPP((j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied)); /* * Write the file header. * * In this module it's easier to wait till finish_output to write anything. */ METHODDEF(void) start_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { rle_dest_ptr dest = (rle_dest_ptr) dinfo; size_t cmapsize; int i, ci; #ifdef PROGRESS_REPORT cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; #endif /* * Make sure the image can be stored in RLE format. * * - RLE stores image dimensions as *signed* 16 bit integers. JPEG * uses unsigned, so we have to check the width. * * - Colorspace is expected to be grayscale or RGB. * * - The number of channels (components) is expected to be 1 (grayscale/ * pseudocolor) or 3 (truecolor/directcolor). * (could be 2 or 4 if using an alpha channel, but we aren't) */ if (cinfo->output_width > 32767 || cinfo->output_height > 32767) ERREXIT2(cinfo, JERR_RLE_DIMENSIONS, cinfo->output_width, cinfo->output_height); if (cinfo->out_color_space != JCS_GRAYSCALE && cinfo->out_color_space != JCS_RGB) ERREXIT(cinfo, JERR_RLE_COLORSPACE); if (cinfo->output_components != 1 && cinfo->output_components != 3) ERREXIT1(cinfo, JERR_RLE_TOOMANYCHANNELS, cinfo->num_components); /* Convert colormap, if any, to RLE format. */ dest->colormap = NULL; if (cinfo->quantize_colors) { /* Allocate storage for RLE-style cmap, zero any extra entries */ cmapsize = cinfo->out_color_components * CMAPLENGTH * SIZEOF(rle_map); dest->colormap = (rle_map *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, cmapsize); MEMZERO(dest->colormap, cmapsize); /* Save away data in RLE format --- note 8-bit left shift! */ /* Shifting would need adjustment for JSAMPLEs wider than 8 bits. */ for (ci = 0; ci < cinfo->out_color_components; ci++) { for (i = 0; i < cinfo->actual_number_of_colors; i++) { dest->colormap[ci * CMAPLENGTH + i] = GETJSAMPLE(cinfo->colormap[ci][i]) << 8; } } } /* Set the output buffer to the first row */ dest->pub.buffer = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->image, (JDIMENSION) 0, (JDIMENSION) 1, TRUE); dest->pub.buffer_height = 1; dest->pub.put_pixel_rows = rle_put_pixel_rows; #ifdef PROGRESS_REPORT if (progress != NULL) { progress->total_extra_passes++; /* count file writing as separate pass */ } #endif } /* * Write some pixel data. * * This routine just saves the data away in a virtual array. */ METHODDEF(void) rle_put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied) { rle_dest_ptr dest = (rle_dest_ptr) dinfo; if (cinfo->output_scanline < cinfo->output_height) { dest->pub.buffer = (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->image, cinfo->output_scanline, (JDIMENSION) 1, TRUE); } } /* * Finish up at the end of the file. * * Here is where we really output the RLE file. */ METHODDEF(void) finish_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) { rle_dest_ptr dest = (rle_dest_ptr) dinfo; rle_hdr header; /* Output file information */ rle_pixel **rle_row, *red, *green, *blue; JSAMPROW output_row; char cmapcomment[80]; int row, col; int ci; #ifdef PROGRESS_REPORT cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; #endif /* Initialize the header info */ header = *rle_hdr_init(NULL); header.rle_file = dest->pub.output_file; header.xmin = 0; header.xmax = cinfo->output_width - 1; header.ymin = 0; header.ymax = cinfo->output_height - 1; header.alpha = 0; header.ncolors = cinfo->output_components; for (ci = 0; ci < cinfo->output_components; ci++) { RLE_SET_BIT(header, ci); } if (cinfo->quantize_colors) { header.ncmap = cinfo->out_color_components; header.cmaplen = CMAPBITS; header.cmap = dest->colormap; /* Add a comment to the output image with the true colormap length. */ sprintf(cmapcomment, "color_map_length=%d", cinfo->actual_number_of_colors); rle_putcom(cmapcomment, &header); } /* Emit the RLE header and color map (if any) */ rle_put_setup(&header); /* Now output the RLE data from our virtual array. * We assume here that (a) rle_pixel is represented the same as JSAMPLE, * and (b) we are not on a machine where FAR pointers differ from regular. */ #ifdef PROGRESS_REPORT if (progress != NULL) { progress->pub.pass_limit = cinfo->output_height; progress->pub.pass_counter = 0; (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); } #endif if (cinfo->output_components == 1) { for (row = cinfo->output_height-1; row >= 0; row--) { rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->image, (JDIMENSION) row, (JDIMENSION) 1, FALSE); rle_putrow(rle_row, (int) cinfo->output_width, &header); #ifdef PROGRESS_REPORT if (progress != NULL) { progress->pub.pass_counter++; (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); } #endif } } else { for (row = cinfo->output_height-1; row >= 0; row--) { rle_row = (rle_pixel **) dest->rle_row; output_row = * (*cinfo->mem->access_virt_sarray) ((j_common_ptr) cinfo, dest->image, (JDIMENSION) row, (JDIMENSION) 1, FALSE); red = rle_row[0]; green = rle_row[1]; blue = rle_row[2]; for (col = cinfo->output_width; col > 0; col--) { *red++ = GETJSAMPLE(*output_row++); *green++ = GETJSAMPLE(*output_row++); *blue++ = GETJSAMPLE(*output_row++); } rle_putrow(rle_row, (int) cinfo->output_width, &header); #ifdef PROGRESS_REPORT if (progress != NULL) { progress->pub.pass_counter++; (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); } #endif } } #ifdef PROGRESS_REPORT if (progress != NULL) progress->completed_extra_passes++; #endif /* Emit file trailer */ rle_puteof(&header); fflush(dest->pub.output_file); if (ferror(dest->pub.output_file)) ERREXIT(cinfo, JERR_FILE_WRITE); } /* * The module selection routine for RLE format output. */ GLOBAL(djpeg_dest_ptr) jinit_write_rle (j_decompress_ptr cinfo) { rle_dest_ptr dest; /* Create module interface object, fill in method pointers */ dest = (rle_dest_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(rle_dest_struct)); dest->pub.start_output = start_output_rle; dest->pub.finish_output = finish_output_rle; /* Calculate output image dimensions so we can allocate space */ jpeg_calc_output_dimensions(cinfo); /* Allocate a work array for output to the RLE library. */ dest->rle_row = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->output_width, (JDIMENSION) cinfo->output_components); /* Allocate a virtual array to hold the image. */ dest->image = (*cinfo->mem->request_virt_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, (JDIMENSION) (cinfo->output_width * cinfo->output_components), cinfo->output_height, (JDIMENSION) 1); return (djpeg_dest_ptr) dest; } #endif /* RLE_SUPPORTED */ jpeg-8d1/makeproj.mac0000644000175000017500000002420511167157654013335 0ustar billbill-- -- makeproj.mac -- -- This AppleScript builds Code Warrior PRO Release 2 project files for the -- libjpeg library as well as the test programs 'cjpeg', 'djpeg', 'jpegtran'. -- (We'd distribute real project files, except they're not text -- and would create maintenance headaches.) -- -- The script then compiles and links the library and the test programs. -- NOTE: if you haven't already created a 'jconfig.h' file, the script -- automatically copies 'jconfig.mac' to 'jconfig.h'. -- -- To use this script, you must have AppleScript 1.1 or later installed -- and a suitable AppleScript editor like Script Editor or Script Debugger -- (http://www.latenightsw.com). Open this file with your AppleScript -- editor and execute the "run" command to build the projects. -- -- Thanks to Dan Sears and Don Agro for this script. -- Questions about this script can be addressed to dogpark@interlog.com -- on run choose folder with prompt ">>> Select IJG source folder <<<" set ijg_folder to result choose folder with prompt ">>> Select MetroWerks folder <<<" set cw_folder to result -- if jconfig.h doesn't already exist, copy jconfig.mac tell application "Finder" if not (exists file "jconfig.h" of ijg_folder) then duplicate {file "jconfig.mac" of folder ijg_folder} select file "jconfig.mac copy" of folder ijg_folder set name of selection to "jconfig.h" end if end tell tell application "CodeWarrior IDE 2.1" with timeout of 10000 seconds -- create libjpeg project activate Create Project (ijg_folder as string) & "libjpeg.proj" Set Preferences of panel "Target Settings" to {Target Name:"libjpeg"} Set Preferences of panel "PPC Project" to {File Name:"libjpeg"} Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} Set Preferences of panel "PPC Project" to {Project Type:library} Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} Set Preferences of panel "PPC Linker" to {Generate SYM File:false} Add Files (ijg_folder as string) & "jaricom.c" To Segment 1 Add Files (ijg_folder as string) & "jcapimin.c" To Segment 1 Add Files (ijg_folder as string) & "jcapistd.c" To Segment 1 Add Files (ijg_folder as string) & "jcarith.c" To Segment 1 Add Files (ijg_folder as string) & "jctrans.c" To Segment 1 Add Files (ijg_folder as string) & "jcparam.c" To Segment 1 Add Files (ijg_folder as string) & "jdatadst.c" To Segment 1 Add Files (ijg_folder as string) & "jcinit.c" To Segment 1 Add Files (ijg_folder as string) & "jcmaster.c" To Segment 1 Add Files (ijg_folder as string) & "jcmarker.c" To Segment 1 Add Files (ijg_folder as string) & "jcmainct.c" To Segment 1 Add Files (ijg_folder as string) & "jcprepct.c" To Segment 1 Add Files (ijg_folder as string) & "jccoefct.c" To Segment 1 Add Files (ijg_folder as string) & "jccolor.c" To Segment 1 Add Files (ijg_folder as string) & "jcsample.c" To Segment 1 Add Files (ijg_folder as string) & "jchuff.c" To Segment 1 Add Files (ijg_folder as string) & "jcdctmgr.c" To Segment 1 Add Files (ijg_folder as string) & "jfdctfst.c" To Segment 1 Add Files (ijg_folder as string) & "jfdctflt.c" To Segment 1 Add Files (ijg_folder as string) & "jfdctint.c" To Segment 1 Add Files (ijg_folder as string) & "jdapimin.c" To Segment 1 Add Files (ijg_folder as string) & "jdapistd.c" To Segment 1 Add Files (ijg_folder as string) & "jdarith.c" To Segment 1 Add Files (ijg_folder as string) & "jdtrans.c" To Segment 1 Add Files (ijg_folder as string) & "jdatasrc.c" To Segment 1 Add Files (ijg_folder as string) & "jdmaster.c" To Segment 1 Add Files (ijg_folder as string) & "jdinput.c" To Segment 1 Add Files (ijg_folder as string) & "jdmarker.c" To Segment 1 Add Files (ijg_folder as string) & "jdhuff.c" To Segment 1 Add Files (ijg_folder as string) & "jdmainct.c" To Segment 1 Add Files (ijg_folder as string) & "jdcoefct.c" To Segment 1 Add Files (ijg_folder as string) & "jdpostct.c" To Segment 1 Add Files (ijg_folder as string) & "jddctmgr.c" To Segment 1 Add Files (ijg_folder as string) & "jidctfst.c" To Segment 1 Add Files (ijg_folder as string) & "jidctflt.c" To Segment 1 Add Files (ijg_folder as string) & "jidctint.c" To Segment 1 Add Files (ijg_folder as string) & "jdsample.c" To Segment 1 Add Files (ijg_folder as string) & "jdcolor.c" To Segment 1 Add Files (ijg_folder as string) & "jquant1.c" To Segment 1 Add Files (ijg_folder as string) & "jquant2.c" To Segment 1 Add Files (ijg_folder as string) & "jdmerge.c" To Segment 1 Add Files (ijg_folder as string) & "jcomapi.c" To Segment 1 Add Files (ijg_folder as string) & "jutils.c" To Segment 1 Add Files (ijg_folder as string) & "jerror.c" To Segment 1 Add Files (ijg_folder as string) & "jmemmgr.c" To Segment 1 Add Files (ijg_folder as string) & "jmemmac.c" To Segment 1 -- compile and link the library Make Project Close Project -- create cjpeg project activate Create Project (ijg_folder as string) & "cjpeg.proj" Set Preferences of panel "Target Settings" to {Target Name:"cjpeg"} Set Preferences of panel "PPC Project" to {File Name:"cjpeg"} Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} Set Preferences of panel "PPC Linker" to {Generate SYM File:false} Add Files (ijg_folder as string) & "cjpeg.c" To Segment 1 Add Files (ijg_folder as string) & "rdppm.c" To Segment 1 Add Files (ijg_folder as string) & "rdgif.c" To Segment 1 Add Files (ijg_folder as string) & "rdtarga.c" To Segment 1 Add Files (ijg_folder as string) & "rdrle.c" To Segment 1 Add Files (ijg_folder as string) & "rdbmp.c" To Segment 1 Add Files (ijg_folder as string) & "rdswitch.c" To Segment 1 Add Files (ijg_folder as string) & "cdjpeg.c" To Segment 1 Add Files (ijg_folder as string) & "libjpeg" To Segment 2 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL C.PPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL SIOUX.PPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:Runtime:Runtime PPC:MSL RuntimePPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:InterfaceLib" To Segment 4 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:MathLib" To Segment 4 -- compile and link cjpeg Make Project Close Project -- create djpeg project activate Create Project (ijg_folder as string) & "djpeg.proj" Set Preferences of panel "Target Settings" to {Target Name:"djpeg"} Set Preferences of panel "PPC Project" to {File Name:"djpeg"} Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} Set Preferences of panel "PPC Linker" to {Generate SYM File:false} Add Files (ijg_folder as string) & "djpeg.c" To Segment 1 Add Files (ijg_folder as string) & "wrppm.c" To Segment 1 Add Files (ijg_folder as string) & "wrgif.c" To Segment 1 Add Files (ijg_folder as string) & "wrtarga.c" To Segment 1 Add Files (ijg_folder as string) & "wrrle.c" To Segment 1 Add Files (ijg_folder as string) & "wrbmp.c" To Segment 1 Add Files (ijg_folder as string) & "rdcolmap.c" To Segment 1 Add Files (ijg_folder as string) & "cdjpeg.c" To Segment 1 Add Files (ijg_folder as string) & "libjpeg" To Segment 2 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL C.PPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL SIOUX.PPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:Runtime:Runtime PPC:MSL RuntimePPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:InterfaceLib" To Segment 4 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:MathLib" To Segment 4 -- compile and link djpeg Make Project Close Project -- create jpegtran project activate Create Project (ijg_folder as string) & "jpegtran.proj" Set Preferences of panel "Target Settings" to {Target Name:"jpegtran"} Set Preferences of panel "PPC Project" to {File Name:"jpegtran"} Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} Set Preferences of panel "PPC Linker" to {Generate SYM File:false} Add Files (ijg_folder as string) & "jpegtran.c" To Segment 1 Add Files (ijg_folder as string) & "rdswitch.c" To Segment 1 Add Files (ijg_folder as string) & "cdjpeg.c" To Segment 1 Add Files (ijg_folder as string) & "transupp.c" To Segment 1 Add Files (ijg_folder as string) & "libjpeg" To Segment 2 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL C.PPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL SIOUX.PPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:Runtime:Runtime PPC:MSL RuntimePPC.Lib" To Segment 3 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:InterfaceLib" To Segment 4 Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:MathLib" To Segment 4 -- compile and link jpegtran Make Project Close Project quit end timeout end tell end run jpeg-8d1/jutils.c0000644000175000017500000001511711633105326012506 0ustar billbill/* * jutils.c * * Copyright (C) 1991-1996, Thomas G. Lane. * Modified 2009-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains tables and miscellaneous utility routines needed * for both compression and decompression. * Note we prefix all global names with "j" to minimize conflicts with * a surrounding application. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * jpeg_zigzag_order[i] is the zigzag-order position of the i'th element * of a DCT block read in natural order (left to right, top to bottom). */ #if 0 /* This table is not actually needed in v6a */ const int jpeg_zigzag_order[DCTSIZE2] = { 0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, 40, 44, 53, 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, 35, 36, 48, 49, 57, 58, 62, 63 }; #endif /* * jpeg_natural_order[i] is the natural-order position of the i'th element * of zigzag order. * * When reading corrupted data, the Huffman decoders could attempt * to reference an entry beyond the end of this array (if the decoded * zero run length reaches past the end of the block). To prevent * wild stores without adding an inner-loop test, we put some extra * "63"s after the real entries. This will cause the extra coefficient * to be stored in location 63 of the block, not somewhere random. * The worst case would be a run-length of 15, which means we need 16 * fake entries. */ const int jpeg_natural_order[DCTSIZE2+16] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; const int jpeg_natural_order7[7*7+16] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 14, 21, 28, 35, 42, 49, 50, 43, 36, 29, 22, 30, 37, 44, 51, 52, 45, 38, 46, 53, 54, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; const int jpeg_natural_order6[6*6+16] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 41, 34, 27, 20, 13, 21, 28, 35, 42, 43, 36, 29, 37, 44, 45, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; const int jpeg_natural_order5[5*5+16] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 12, 19, 26, 33, 34, 27, 20, 28, 35, 36, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; const int jpeg_natural_order4[4*4+16] = { 0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 25, 18, 11, 19, 26, 27, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; const int jpeg_natural_order3[3*3+16] = { 0, 1, 8, 16, 9, 2, 10, 17, 18, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; const int jpeg_natural_order2[2*2+16] = { 0, 1, 8, 9, 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ 63, 63, 63, 63, 63, 63, 63, 63 }; /* * Arithmetic utilities */ GLOBAL(long) jdiv_round_up (long a, long b) /* Compute a/b rounded up to next integer, ie, ceil(a/b) */ /* Assumes a >= 0, b > 0 */ { return (a + b - 1L) / b; } GLOBAL(long) jround_up (long a, long b) /* Compute a rounded up to next multiple of b, ie, ceil(a/b)*b */ /* Assumes a >= 0, b > 0 */ { a += b - 1L; return a - (a % b); } /* On normal machines we can apply MEMCOPY() and MEMZERO() to sample arrays * and coefficient-block arrays. This won't work on 80x86 because the arrays * are FAR and we're assuming a small-pointer memory model. However, some * DOS compilers provide far-pointer versions of memcpy() and memset() even * in the small-model libraries. These will be used if USE_FMEM is defined. * Otherwise, the routines below do it the hard way. (The performance cost * is not all that great, because these routines aren't very heavily used.) */ #ifndef NEED_FAR_POINTERS /* normal case, same as regular macro */ #define FMEMCOPY(dest,src,size) MEMCOPY(dest,src,size) #else /* 80x86 case, define if we can */ #ifdef USE_FMEM #define FMEMCOPY(dest,src,size) _fmemcpy((void FAR *)(dest), (const void FAR *)(src), (size_t)(size)) #else /* This function is for use by the FMEMZERO macro defined in jpegint.h. * Do not call this function directly, use the FMEMZERO macro instead. */ GLOBAL(void) jzero_far (void FAR * target, size_t bytestozero) /* Zero out a chunk of FAR memory. */ /* This might be sample-array data, block-array data, or alloc_large data. */ { register char FAR * ptr = (char FAR *) target; register size_t count; for (count = bytestozero; count > 0; count--) { *ptr++ = 0; } } #endif #endif GLOBAL(void) jcopy_sample_rows (JSAMPARRAY input_array, int source_row, JSAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols) /* Copy some rows of samples from one place to another. * num_rows rows are copied from input_array[source_row++] * to output_array[dest_row++]; these areas may overlap for duplication. * The source and destination arrays must be at least as wide as num_cols. */ { register JSAMPROW inptr, outptr; #ifdef FMEMCOPY register size_t count = (size_t) (num_cols * SIZEOF(JSAMPLE)); #else register JDIMENSION count; #endif register int row; input_array += source_row; output_array += dest_row; for (row = num_rows; row > 0; row--) { inptr = *input_array++; outptr = *output_array++; #ifdef FMEMCOPY FMEMCOPY(outptr, inptr, count); #else for (count = num_cols; count > 0; count--) *outptr++ = *inptr++; /* needn't bother with GETJSAMPLE() here */ #endif } } GLOBAL(void) jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row, JDIMENSION num_blocks) /* Copy a row of coefficient blocks from one place to another. */ { #ifdef FMEMCOPY FMEMCOPY(output_row, input_row, num_blocks * (DCTSIZE2 * SIZEOF(JCOEF))); #else register JCOEFPTR inptr, outptr; register long count; inptr = (JCOEFPTR) input_row; outptr = (JCOEFPTR) output_row; for (count = (long) num_blocks * DCTSIZE2; count > 0; count--) { *outptr++ = *inptr++; } #endif } jpeg-8d1/jconfig.bcc0000644000175000017500000000261011161225370013110 0ustar billbill/* jconfig.bcc --- jconfig.h for Borland C (Turbo C) on MS-DOS or OS/2. */ /* see jconfig.txt for explanations */ #define HAVE_PROTOTYPES #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* #define void char */ /* #define const */ #undef CHAR_IS_UNSIGNED #define HAVE_STDDEF_H #define HAVE_STDLIB_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #ifdef __MSDOS__ #define NEED_FAR_POINTERS /* for small or medium memory model */ #endif #undef NEED_SHORT_EXTERNAL_NAMES #undef INCOMPLETE_TYPES_BROKEN /* this assumes you have -w-stu in CFLAGS */ #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #ifdef __MSDOS__ #define USE_MSDOS_MEMMGR /* Define this if you use jmemdos.c */ #define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */ #define USE_FMEM /* Borland has _fmemcpy() and _fmemset() */ #endif #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #define TWO_FILE_COMMANDLINE #define USE_SETMODE /* Borland has setmode() */ #ifdef __MSDOS__ #define NEED_SIGNAL_CATCHER /* Define this if you use jmemdos.c */ #endif #undef DONT_USE_B_MODE #undef PROGRESS_REPORT /* optional */ #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/cdjpeg.h0000644000175000017500000001416007751540076012445 0ustar billbill/* * cdjpeg.h * * Copyright (C) 1994-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains common declarations for the sample applications * cjpeg and djpeg. It is NOT used by the core JPEG library. */ #define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */ #define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */ #include "jinclude.h" #include "jpeglib.h" #include "jerror.h" /* get library error codes too */ #include "cderror.h" /* get application-specific error codes */ /* * Object interface for cjpeg's source file decoding modules */ typedef struct cjpeg_source_struct * cjpeg_source_ptr; struct cjpeg_source_struct { JMETHOD(void, start_input, (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)); JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)); JMETHOD(void, finish_input, (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)); FILE *input_file; JSAMPARRAY buffer; JDIMENSION buffer_height; }; /* * Object interface for djpeg's output file encoding modules */ typedef struct djpeg_dest_struct * djpeg_dest_ptr; struct djpeg_dest_struct { /* start_output is called after jpeg_start_decompress finishes. * The color map will be ready at this time, if one is needed. */ JMETHOD(void, start_output, (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)); /* Emit the specified number of pixel rows from the buffer. */ JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied)); /* Finish up at the end of the image. */ JMETHOD(void, finish_output, (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)); /* Target file spec; filled in by djpeg.c after object is created. */ FILE * output_file; /* Output pixel-row buffer. Created by module init or start_output. * Width is cinfo->output_width * cinfo->output_components; * height is buffer_height. */ JSAMPARRAY buffer; JDIMENSION buffer_height; }; /* * cjpeg/djpeg may need to perform extra passes to convert to or from * the source/destination file format. The JPEG library does not know * about these passes, but we'd like them to be counted by the progress * monitor. We use an expanded progress monitor object to hold the * additional pass count. */ struct cdjpeg_progress_mgr { struct jpeg_progress_mgr pub; /* fields known to JPEG library */ int completed_extra_passes; /* extra passes completed */ int total_extra_passes; /* total extra */ /* last printed percentage stored here to avoid multiple printouts */ int percent_done; }; typedef struct cdjpeg_progress_mgr * cd_progress_ptr; /* Short forms of external names for systems with brain-damaged linkers. */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jinit_read_bmp jIRdBMP #define jinit_write_bmp jIWrBMP #define jinit_read_gif jIRdGIF #define jinit_write_gif jIWrGIF #define jinit_read_ppm jIRdPPM #define jinit_write_ppm jIWrPPM #define jinit_read_rle jIRdRLE #define jinit_write_rle jIWrRLE #define jinit_read_targa jIRdTarga #define jinit_write_targa jIWrTarga #define read_quant_tables RdQTables #define read_scan_script RdScnScript #define set_quality_ratings SetQRates #define set_quant_slots SetQSlots #define set_sample_factors SetSFacts #define read_color_map RdCMap #define enable_signal_catcher EnSigCatcher #define start_progress_monitor StProgMon #define end_progress_monitor EnProgMon #define read_stdin RdStdin #define write_stdout WrStdout #endif /* NEED_SHORT_EXTERNAL_NAMES */ /* Module selection routines for I/O modules. */ EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo)); EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo, boolean is_os2)); EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo)); EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo)); EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo)); EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo)); EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo)); EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo)); EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo)); EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo)); /* cjpeg support routines (in rdswitch.c) */ EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename, boolean force_baseline)); EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename)); EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg, boolean force_baseline)); EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg)); EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg)); /* djpeg support routines (in rdcolmap.c) */ EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile)); /* common support routines (in cdjpeg.c) */ EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo)); EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo, cd_progress_ptr progress)); EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo)); EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars)); EXTERN(FILE *) read_stdin JPP((void)); EXTERN(FILE *) write_stdout JPP((void)); /* miscellaneous useful macros */ #ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ #define READ_BINARY "r" #define WRITE_BINARY "w" #else #ifdef VMS /* VMS is very nonstandard */ #define READ_BINARY "rb", "ctx=stm" #define WRITE_BINARY "wb", "ctx=stm" #else /* standard ANSI-compliant case */ #define READ_BINARY "rb" #define WRITE_BINARY "wb" #endif #endif #ifndef EXIT_FAILURE /* define exit() codes if not provided */ #define EXIT_FAILURE 1 #endif #ifndef EXIT_SUCCESS #ifdef VMS #define EXIT_SUCCESS 1 /* VMS is very nonstandard */ #else #define EXIT_SUCCESS 0 #endif #endif #ifndef EXIT_WARNING #ifdef VMS #define EXIT_WARNING 1 /* VMS is very nonstandard */ #else #define EXIT_WARNING 2 #endif #endif jpeg-8d1/jconfig.wat0000644000175000017500000000216311161225575013166 0ustar billbill/* jconfig.wat --- jconfig.h for Watcom C/C++ on MS-DOS or OS/2. */ /* see jconfig.txt for explanations */ #define HAVE_PROTOTYPES #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* #define void char */ /* #define const */ #define CHAR_IS_UNSIGNED #define HAVE_STDDEF_H #define HAVE_STDLIB_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #undef NEED_FAR_POINTERS /* Watcom uses flat 32-bit addressing */ #undef NEED_SHORT_EXTERNAL_NAMES #undef INCOMPLETE_TYPES_BROKEN #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #undef TWO_FILE_COMMANDLINE /* optional */ #define USE_SETMODE /* Needed to make one-file style work in Watcom */ #undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */ #undef DONT_USE_B_MODE #undef PROGRESS_REPORT /* optional */ #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/makeasln.v100000644000175000017500000000350311367105232013147 0ustar billbill Microsoft Visual Studio Solution File, Format Version 11.00 # Visual C++ Express 2010 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "cjpeg", "cjpeg.vcxproj", "{2E7FAAD9-2F58-4BDE-81F2-1D6D3FB8BF57}" EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "djpeg", "djpeg.vcxproj", "{11043137-B453-4DFA-9010-4D2B9DC1545C}" EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "jpegtran", "jpegtran.vcxproj", "{025BAC50-51B5-4FFE-BC47-3F920BB4047E}" EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "rdjpgcom", "rdjpgcom.vcxproj", "{C81513DB-78DC-46BC-BC98-82E745203976}" EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "wrjpgcom", "wrjpgcom.vcxproj", "{B57065D4-DDDA-4668-BAF5-2D49270C973C}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Release|Win32 = Release|Win32 EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution {2E7FAAD9-2F58-4BDE-81F2-1D6D3FB8BF57}.Release|Win32.ActiveCfg = Release|Win32 {2E7FAAD9-2F58-4BDE-81F2-1D6D3FB8BF57}.Release|Win32.Build.0 = Release|Win32 {11043137-B453-4DFA-9010-4D2B9DC1545C}.Release|Win32.ActiveCfg = Release|Win32 {11043137-B453-4DFA-9010-4D2B9DC1545C}.Release|Win32.Build.0 = Release|Win32 {025BAC50-51B5-4FFE-BC47-3F920BB4047E}.Release|Win32.ActiveCfg = Release|Win32 {025BAC50-51B5-4FFE-BC47-3F920BB4047E}.Release|Win32.Build.0 = Release|Win32 {C81513DB-78DC-46BC-BC98-82E745203976}.Release|Win32.ActiveCfg = Release|Win32 {C81513DB-78DC-46BC-BC98-82E745203976}.Release|Win32.Build.0 = Release|Win32 {B57065D4-DDDA-4668-BAF5-2D49270C973C}.Release|Win32.ActiveCfg = Release|Win32 {B57065D4-DDDA-4668-BAF5-2D49270C973C}.Release|Win32.Build.0 = Release|Win32 EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection EndGlobal jpeg-8d1/makljpeg.st0000644000175000017500000001013011165711606013164 0ustar billbill; Project file for Independent JPEG Group's software ; ; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C. ; Thanks to Frank Moehle, B. Setzepfandt, and Guido Vollbeding. ; ; To use this file, rename it to libjpeg.prj. ; Read installation instructions before trying to make the program! ; ; ; * * * Output file * * * libjpeg.lib ; ; * * * COMPILER OPTIONS * * * .C[-P] ; absolute calls .C[-M] ; and no string merging, folks .C[-w-cln] ; no "constant is long" warnings .C[-w-par] ; no "parameter xxxx unused" .C[-w-rch] ; no "unreachable code" .C[-wsig] ; warn if significant digits may be lost .L[-J] ; link new Obj-format (so we get a library) = ; * * * * List of modules * * * * jaricom.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcapimin.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcapistd.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcarith.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jccoefct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jccolor.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcdctmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jchuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcinit.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcmainct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcmarker.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcmaster.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcomapi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcparam.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcprepct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jcsample.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jctrans.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdapimin.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdapistd.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdarith.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdatadst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h) jdatasrc.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h) jdcoefct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdcolor.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jddctmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jdhuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdinput.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdmainct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdmarker.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdmaster.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdmerge.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdpostct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdsample.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jdtrans.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jerror.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jversion.h,jerror.h) jfdctflt.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jfdctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jfdctint.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jidctflt.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jidctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jidctint.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) jquant1.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jquant2.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jutils.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) jmemmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jmemsys.h) jmemansi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jmemsys.h) jpeg-8d1/makejdsp.vc60000644000175000017500000001206411174107454013250 0ustar billbill# Microsoft Developer Studio Project File - Name="jpeg" - Package Owner=<4> # Microsoft Developer Studio Generated Build File, Format Version 6.00 # ** NICHT BEARBEITEN ** # TARGTYPE "Win32 (x86) Static Library" 0x0104 CFG=jpeg - Win32 !MESSAGE Dies ist kein gltiges Makefile. Zum Erstellen dieses Projekts mit NMAKE !MESSAGE verwenden Sie den Befehl "Makefile exportieren" und fhren Sie den Befehl !MESSAGE !MESSAGE NMAKE /f "jpeg.mak". !MESSAGE !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "jpeg.mak" CFG="jpeg - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "jpeg - Win32" (basierend auf "Win32 (x86) Static Library") !MESSAGE # Begin Project # PROP AllowPerConfigDependencies 0 # PROP Scc_ProjName "" # PROP Scc_LocalPath "" CPP=cl.exe RSC=rc.exe # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 0 # PROP BASE Output_Dir ".\Release" # PROP BASE Intermediate_Dir ".\Release" # PROP BASE Target_Dir "" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 0 # PROP Output_Dir ".\Release" # PROP Intermediate_Dir ".\Release" # PROP Target_Dir "" # ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /c # ADD CPP /nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c # ADD BASE RSC /l 0x407 # ADD RSC /l 0x407 BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LIB32=link.exe -lib # ADD BASE LIB32 /nologo # ADD LIB32 /nologo # Begin Target # Name "jpeg - Win32" # Begin Group "Quellcodedateien" # PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat;for;f90" # Begin Source File SOURCE=.\jaricom.c # End Source File # Begin Source File SOURCE=.\jcapimin.c # End Source File # Begin Source File SOURCE=.\jcapistd.c # End Source File # Begin Source File SOURCE=.\jcarith.c # End Source File # Begin Source File SOURCE=.\jccoefct.c # End Source File # Begin Source File SOURCE=.\jccolor.c # End Source File # Begin Source File SOURCE=.\jcdctmgr.c # End Source File # Begin Source File SOURCE=.\jchuff.c # End Source File # Begin Source File SOURCE=.\jcinit.c # End Source File # Begin Source File SOURCE=.\jcmainct.c # End Source File # Begin Source File SOURCE=.\jcmarker.c # End Source File # Begin Source File SOURCE=.\jcmaster.c # End Source File # Begin Source File SOURCE=.\jcomapi.c # End Source File # Begin Source File SOURCE=.\jcparam.c # End Source File # Begin Source File SOURCE=.\jcprepct.c # End Source File # Begin Source File SOURCE=.\jcsample.c # End Source File # Begin Source File SOURCE=.\jctrans.c # End Source File # Begin Source File SOURCE=.\jdapimin.c # End Source File # Begin Source File SOURCE=.\jdapistd.c # End Source File # Begin Source File SOURCE=.\jdarith.c # End Source File # Begin Source File SOURCE=.\jdatadst.c # End Source File # Begin Source File SOURCE=.\jdatasrc.c # End Source File # Begin Source File SOURCE=.\jdcoefct.c # End Source File # Begin Source File SOURCE=.\jdcolor.c # End Source File # Begin Source File SOURCE=.\jddctmgr.c # End Source File # Begin Source File SOURCE=.\jdhuff.c # End Source File # Begin Source File SOURCE=.\jdinput.c # End Source File # Begin Source File SOURCE=.\jdmainct.c # End Source File # Begin Source File SOURCE=.\jdmarker.c # End Source File # Begin Source File SOURCE=.\jdmaster.c # End Source File # Begin Source File SOURCE=.\jdmerge.c # End Source File # Begin Source File SOURCE=.\jdpostct.c # End Source File # Begin Source File SOURCE=.\jdsample.c # End Source File # Begin Source File SOURCE=.\jdtrans.c # End Source File # Begin Source File SOURCE=.\jerror.c # End Source File # Begin Source File SOURCE=.\jfdctflt.c # End Source File # Begin Source File SOURCE=.\jfdctfst.c # End Source File # Begin Source File SOURCE=.\jfdctint.c # End Source File # Begin Source File SOURCE=.\jidctflt.c # End Source File # Begin Source File SOURCE=.\jidctfst.c # End Source File # Begin Source File SOURCE=.\jidctint.c # End Source File # Begin Source File SOURCE=.\jmemmgr.c # End Source File # Begin Source File SOURCE=.\jmemnobs.c # End Source File # Begin Source File SOURCE=.\jquant1.c # End Source File # Begin Source File SOURCE=.\jquant2.c # End Source File # Begin Source File SOURCE=.\jutils.c # End Source File # End Group # Begin Group "Header-Dateien" # PROP Default_Filter "h;hpp;hxx;hm;inl;fi;fd" # Begin Source File SOURCE=.\jconfig.h # End Source File # Begin Source File SOURCE=.\jdct.h # End Source File # Begin Source File SOURCE=.\jerror.h # End Source File # Begin Source File SOURCE=.\jinclude.h # End Source File # Begin Source File SOURCE=.\jmemsys.h # End Source File # Begin Source File SOURCE=.\jmorecfg.h # End Source File # Begin Source File SOURCE=.\jpegint.h # End Source File # Begin Source File SOURCE=.\jpeglib.h # End Source File # Begin Source File SOURCE=.\jversion.h # End Source File # End Group # Begin Group "Ressourcendateien" # PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;cnt;rtf;gif;jpg;jpeg;jpe" # End Group # End Target # End Project jpeg-8d1/makefile.ansi0000644000175000017500000002771711367317162013501 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is suitable for Unix-like systems with ANSI-capable compilers. # If you have a non-ANSI compiler, makefile.unix is a better starting point. # Read installation instructions before saying "make" !! # The name of your C compiler: CC= cc # You may need to adjust these cc options: CFLAGS= -O # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via -D switches here. # Link-time cc options: LDFLAGS= # To link any special libraries, add the necessary -l commands here. LDLIBS= # Put here the object file name for the correct system-dependent memory # manager file. For Unix this is usually jmemnobs.o, but you may want # to use jmemansi.o or jmemname.o if you have limited swap space. SYSDEPMEM= jmemnobs.o # miscellaneous OS-dependent stuff # linker LN= $(CC) # file deletion command RM= rm -f # library (.a) file creation command AR= ar rc # second step in .a creation (use "touch" if not needed) AR2= ranlib # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.o jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.o jcapistd.o jcarith.o jctrans.o jcparam.o \ jdatadst.o jcinit.o jcmaster.o jcmarker.o jcmainct.o jcprepct.o \ jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o jfdctfst.o \ jfdctflt.o jfdctint.o # decompression library object files DLIBOBJECTS= jdapimin.o jdapistd.o jdarith.o jdtrans.o jdatasrc.o \ jdmaster.o jdinput.o jdmarker.o jdhuff.o jdmainct.o \ jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o \ jidctint.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o # These objectfiles are included in libjpeg.a LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ cdjpeg.o DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ cdjpeg.o TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o all: libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom libjpeg.a: $(LIBOBJECTS) $(RM) libjpeg.a $(AR) libjpeg.a $(LIBOBJECTS) $(AR2) libjpeg.a cjpeg: $(COBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o cjpeg $(COBJECTS) libjpeg.a $(LDLIBS) djpeg: $(DOBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS) jpegtran: $(TROBJECTS) libjpeg.a $(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS) rdjpgcom: rdjpgcom.o $(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS) wrjpgcom: wrjpgcom.o $(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.o $(LDLIBS) jconfig.h: jconfig.txt echo You must prepare a system-dependent jconfig.h file. echo Please read the installation directions in install.txt. exit 1 clean: $(RM) *.o cjpeg djpeg jpegtran libjpeg.a rdjpgcom wrjpgcom $(RM) core testout* test: cjpeg djpeg jpegtran $(RM) testout* ./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg ./cjpeg -dct int -outfile testout.jpg testimg.ppm ./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm ./jpegtran -outfile testoutt.jpg testprog.jpg cmp testimg.ppm testout.ppm cmp testimg.bmp testout.bmp cmp testimg.jpg testout.jpg cmp testimg.ppm testoutp.ppm cmp testimgp.jpg testoutp.jpg cmp testorig.jpg testoutt.jpg jaricom.o: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.o: jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdarith.o: jdarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jpeg-8d1/jpegint.h0000644000175000017500000004152011645523444012646 0ustar billbill/* * jpegint.h * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 1997-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file provides common declarations for the various JPEG modules. * These declarations are considered internal to the JPEG library; most * applications using the library shouldn't need to include this file. */ /* Declarations for both compression & decompression */ typedef enum { /* Operating modes for buffer controllers */ JBUF_PASS_THRU, /* Plain stripwise operation */ /* Remaining modes require a full-image buffer to have been created */ JBUF_SAVE_SOURCE, /* Run source subobject only, save output */ JBUF_CRANK_DEST, /* Run dest subobject only, using saved data */ JBUF_SAVE_AND_PASS /* Run both subobjects, save output */ } J_BUF_MODE; /* Values of global_state field (jdapi.c has some dependencies on ordering!) */ #define CSTATE_START 100 /* after create_compress */ #define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */ #define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */ #define CSTATE_WRCOEFS 103 /* jpeg_write_coefficients done */ #define DSTATE_START 200 /* after create_decompress */ #define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */ #define DSTATE_READY 202 /* found SOS, ready for start_decompress */ #define DSTATE_PRELOAD 203 /* reading multiscan file in start_decompress*/ #define DSTATE_PRESCAN 204 /* performing dummy pass for 2-pass quant */ #define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */ #define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */ #define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */ #define DSTATE_BUFPOST 208 /* looking for SOS/EOI in jpeg_finish_output */ #define DSTATE_RDCOEFS 209 /* reading file in jpeg_read_coefficients */ #define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */ /* Declarations for compression modules */ /* Master control module */ struct jpeg_comp_master { JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo)); JMETHOD(void, pass_startup, (j_compress_ptr cinfo)); JMETHOD(void, finish_pass, (j_compress_ptr cinfo)); /* State variables made visible to other modules */ boolean call_pass_startup; /* True if pass_startup must be called */ boolean is_last_pass; /* True during last pass */ }; /* Main buffer control (downsampled-data buffer) */ struct jpeg_c_main_controller { JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode)); JMETHOD(void, process_data, (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); }; /* Compression preprocessing (downsampling input buffer control) */ struct jpeg_c_prep_controller { JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode)); JMETHOD(void, pre_process_data, (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail)); }; /* Coefficient buffer control */ struct jpeg_c_coef_controller { JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode)); JMETHOD(boolean, compress_data, (j_compress_ptr cinfo, JSAMPIMAGE input_buf)); }; /* Colorspace conversion */ struct jpeg_color_converter { JMETHOD(void, start_pass, (j_compress_ptr cinfo)); JMETHOD(void, color_convert, (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows)); }; /* Downsampling */ struct jpeg_downsampler { JMETHOD(void, start_pass, (j_compress_ptr cinfo)); JMETHOD(void, downsample, (j_compress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_index, JSAMPIMAGE output_buf, JDIMENSION out_row_group_index)); boolean need_context_rows; /* TRUE if need rows above & below */ }; /* Forward DCT (also controls coefficient quantization) */ typedef JMETHOD(void, forward_DCT_ptr, (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks)); struct jpeg_forward_dct { JMETHOD(void, start_pass, (j_compress_ptr cinfo)); /* It is useful to allow each component to have a separate FDCT method. */ forward_DCT_ptr forward_DCT[MAX_COMPONENTS]; }; /* Entropy encoding */ struct jpeg_entropy_encoder { JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics)); JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKROW *MCU_data)); JMETHOD(void, finish_pass, (j_compress_ptr cinfo)); }; /* Marker writing */ struct jpeg_marker_writer { JMETHOD(void, write_file_header, (j_compress_ptr cinfo)); JMETHOD(void, write_frame_header, (j_compress_ptr cinfo)); JMETHOD(void, write_scan_header, (j_compress_ptr cinfo)); JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo)); JMETHOD(void, write_tables_only, (j_compress_ptr cinfo)); /* These routines are exported to allow insertion of extra markers */ /* Probably only COM and APPn markers should be written this way */ JMETHOD(void, write_marker_header, (j_compress_ptr cinfo, int marker, unsigned int datalen)); JMETHOD(void, write_marker_byte, (j_compress_ptr cinfo, int val)); }; /* Declarations for decompression modules */ /* Master control module */ struct jpeg_decomp_master { JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo)); JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo)); /* State variables made visible to other modules */ boolean is_dummy_pass; /* True during 1st pass for 2-pass quant */ }; /* Input control module */ struct jpeg_input_controller { JMETHOD(int, consume_input, (j_decompress_ptr cinfo)); JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo)); JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo)); JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo)); /* State variables made visible to other modules */ boolean has_multiple_scans; /* True if file has multiple scans */ boolean eoi_reached; /* True when EOI has been consumed */ }; /* Main buffer control (downsampled-data buffer) */ struct jpeg_d_main_controller { JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)); JMETHOD(void, process_data, (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); }; /* Coefficient buffer control */ struct jpeg_d_coef_controller { JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo)); JMETHOD(int, consume_data, (j_decompress_ptr cinfo)); JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo)); JMETHOD(int, decompress_data, (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)); /* Pointer to array of coefficient virtual arrays, or NULL if none */ jvirt_barray_ptr *coef_arrays; }; /* Decompression postprocessing (color quantization buffer control) */ struct jpeg_d_post_controller { JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)); JMETHOD(void, post_process_data, (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); }; /* Marker reading & parsing */ struct jpeg_marker_reader { JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo)); /* Read markers until SOS or EOI. * Returns same codes as are defined for jpeg_consume_input: * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. */ JMETHOD(int, read_markers, (j_decompress_ptr cinfo)); /* Read a restart marker --- exported for use by entropy decoder only */ jpeg_marker_parser_method read_restart_marker; /* State of marker reader --- nominally internal, but applications * supplying COM or APPn handlers might like to know the state. */ boolean saw_SOI; /* found SOI? */ boolean saw_SOF; /* found SOF? */ int next_restart_num; /* next restart number expected (0-7) */ unsigned int discarded_bytes; /* # of bytes skipped looking for a marker */ }; /* Entropy decoding */ struct jpeg_entropy_decoder { JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)); }; /* Inverse DCT (also performs dequantization) */ typedef JMETHOD(void, inverse_DCT_method_ptr, (j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); struct jpeg_inverse_dct { JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); /* It is useful to allow each component to have a separate IDCT method. */ inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS]; }; /* Upsampling (note that upsampler must also call color converter) */ struct jpeg_upsampler { JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); JMETHOD(void, upsample, (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); boolean need_context_rows; /* TRUE if need rows above & below */ }; /* Colorspace conversion */ struct jpeg_color_deconverter { JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); JMETHOD(void, color_convert, (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows)); }; /* Color quantization or color precision reduction */ struct jpeg_color_quantizer { JMETHOD(void, start_pass, (j_decompress_ptr cinfo, boolean is_pre_scan)); JMETHOD(void, color_quantize, (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows)); JMETHOD(void, finish_pass, (j_decompress_ptr cinfo)); JMETHOD(void, new_color_map, (j_decompress_ptr cinfo)); }; /* Miscellaneous useful macros */ #undef MAX #define MAX(a,b) ((a) > (b) ? (a) : (b)) #undef MIN #define MIN(a,b) ((a) < (b) ? (a) : (b)) /* We assume that right shift corresponds to signed division by 2 with * rounding towards minus infinity. This is correct for typical "arithmetic * shift" instructions that shift in copies of the sign bit. But some * C compilers implement >> with an unsigned shift. For these machines you * must define RIGHT_SHIFT_IS_UNSIGNED. * RIGHT_SHIFT provides a proper signed right shift of an INT32 quantity. * It is only applied with constant shift counts. SHIFT_TEMPS must be * included in the variables of any routine using RIGHT_SHIFT. */ #ifdef RIGHT_SHIFT_IS_UNSIGNED #define SHIFT_TEMPS INT32 shift_temp; #define RIGHT_SHIFT(x,shft) \ ((shift_temp = (x)) < 0 ? \ (shift_temp >> (shft)) | ((~((INT32) 0)) << (32-(shft))) : \ (shift_temp >> (shft))) #else #define SHIFT_TEMPS #define RIGHT_SHIFT(x,shft) ((x) >> (shft)) #endif /* Short forms of external names for systems with brain-damaged linkers. */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jinit_compress_master jICompress #define jinit_c_master_control jICMaster #define jinit_c_main_controller jICMainC #define jinit_c_prep_controller jICPrepC #define jinit_c_coef_controller jICCoefC #define jinit_color_converter jICColor #define jinit_downsampler jIDownsampler #define jinit_forward_dct jIFDCT #define jinit_huff_encoder jIHEncoder #define jinit_arith_encoder jIAEncoder #define jinit_marker_writer jIMWriter #define jinit_master_decompress jIDMaster #define jinit_d_main_controller jIDMainC #define jinit_d_coef_controller jIDCoefC #define jinit_d_post_controller jIDPostC #define jinit_input_controller jIInCtlr #define jinit_marker_reader jIMReader #define jinit_huff_decoder jIHDecoder #define jinit_arith_decoder jIADecoder #define jinit_inverse_dct jIIDCT #define jinit_upsampler jIUpsampler #define jinit_color_deconverter jIDColor #define jinit_1pass_quantizer jI1Quant #define jinit_2pass_quantizer jI2Quant #define jinit_merged_upsampler jIMUpsampler #define jinit_memory_mgr jIMemMgr #define jdiv_round_up jDivRound #define jround_up jRound #define jzero_far jZeroFar #define jcopy_sample_rows jCopySamples #define jcopy_block_row jCopyBlocks #define jpeg_zigzag_order jZIGTable #define jpeg_natural_order jZAGTable #define jpeg_natural_order7 jZAG7Table #define jpeg_natural_order6 jZAG6Table #define jpeg_natural_order5 jZAG5Table #define jpeg_natural_order4 jZAG4Table #define jpeg_natural_order3 jZAG3Table #define jpeg_natural_order2 jZAG2Table #define jpeg_aritab jAriTab #endif /* NEED_SHORT_EXTERNAL_NAMES */ /* On normal machines we can apply MEMCOPY() and MEMZERO() to sample arrays * and coefficient-block arrays. This won't work on 80x86 because the arrays * are FAR and we're assuming a small-pointer memory model. However, some * DOS compilers provide far-pointer versions of memcpy() and memset() even * in the small-model libraries. These will be used if USE_FMEM is defined. * Otherwise, the routines in jutils.c do it the hard way. */ #ifndef NEED_FAR_POINTERS /* normal case, same as regular macro */ #define FMEMZERO(target,size) MEMZERO(target,size) #else /* 80x86 case */ #ifdef USE_FMEM #define FMEMZERO(target,size) _fmemset((void FAR *)(target), 0, (size_t)(size)) #else EXTERN(void) jzero_far JPP((void FAR * target, size_t bytestozero)); #define FMEMZERO(target,size) jzero_far(target, size) #endif #endif /* Compression module initialization routines */ EXTERN(void) jinit_compress_master JPP((j_compress_ptr cinfo)); EXTERN(void) jinit_c_master_control JPP((j_compress_ptr cinfo, boolean transcode_only)); EXTERN(void) jinit_c_main_controller JPP((j_compress_ptr cinfo, boolean need_full_buffer)); EXTERN(void) jinit_c_prep_controller JPP((j_compress_ptr cinfo, boolean need_full_buffer)); EXTERN(void) jinit_c_coef_controller JPP((j_compress_ptr cinfo, boolean need_full_buffer)); EXTERN(void) jinit_color_converter JPP((j_compress_ptr cinfo)); EXTERN(void) jinit_downsampler JPP((j_compress_ptr cinfo)); EXTERN(void) jinit_forward_dct JPP((j_compress_ptr cinfo)); EXTERN(void) jinit_huff_encoder JPP((j_compress_ptr cinfo)); EXTERN(void) jinit_arith_encoder JPP((j_compress_ptr cinfo)); EXTERN(void) jinit_marker_writer JPP((j_compress_ptr cinfo)); /* Decompression module initialization routines */ EXTERN(void) jinit_master_decompress JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_d_main_controller JPP((j_decompress_ptr cinfo, boolean need_full_buffer)); EXTERN(void) jinit_d_coef_controller JPP((j_decompress_ptr cinfo, boolean need_full_buffer)); EXTERN(void) jinit_d_post_controller JPP((j_decompress_ptr cinfo, boolean need_full_buffer)); EXTERN(void) jinit_input_controller JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_marker_reader JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_huff_decoder JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_arith_decoder JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_inverse_dct JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_upsampler JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_color_deconverter JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_1pass_quantizer JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_2pass_quantizer JPP((j_decompress_ptr cinfo)); EXTERN(void) jinit_merged_upsampler JPP((j_decompress_ptr cinfo)); /* Memory manager initialization */ EXTERN(void) jinit_memory_mgr JPP((j_common_ptr cinfo)); /* Utility routines in jutils.c */ EXTERN(long) jdiv_round_up JPP((long a, long b)); EXTERN(long) jround_up JPP((long a, long b)); EXTERN(void) jcopy_sample_rows JPP((JSAMPARRAY input_array, int source_row, JSAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols)); EXTERN(void) jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row, JDIMENSION num_blocks)); /* Constant tables in jutils.c */ #if 0 /* This table is not actually needed in v6a */ extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */ #endif extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */ extern const int jpeg_natural_order7[]; /* zz to natural order for 7x7 block */ extern const int jpeg_natural_order6[]; /* zz to natural order for 6x6 block */ extern const int jpeg_natural_order5[]; /* zz to natural order for 5x5 block */ extern const int jpeg_natural_order4[]; /* zz to natural order for 4x4 block */ extern const int jpeg_natural_order3[]; /* zz to natural order for 3x3 block */ extern const int jpeg_natural_order2[]; /* zz to natural order for 2x2 block */ /* Arithmetic coding probability estimation tables in jaricom.c */ extern const INT32 jpeg_aritab[]; /* Suppress undefined-structure complaints if necessary. */ #ifdef INCOMPLETE_TYPES_BROKEN #ifndef AM_MEMORY_MANAGER /* only jmemmgr.c defines these */ struct jvirt_sarray_control { long dummy; }; struct jvirt_barray_control { long dummy; }; #endif #endif /* INCOMPLETE_TYPES_BROKEN */ jpeg-8d1/transupp.h0000644000175000017500000002206511651754462013070 0ustar billbill/* * transupp.h * * Copyright (C) 1997-2011, Thomas G. Lane, Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains declarations for image transformation routines and * other utility code used by the jpegtran sample application. These are * NOT part of the core JPEG library. But we keep these routines separate * from jpegtran.c to ease the task of maintaining jpegtran-like programs * that have other user interfaces. * * NOTE: all the routines declared here have very specific requirements * about when they are to be executed during the reading and writing of the * source and destination files. See the comments in transupp.c, or see * jpegtran.c for an example of correct usage. */ /* If you happen not to want the image transform support, disable it here */ #ifndef TRANSFORMS_SUPPORTED #define TRANSFORMS_SUPPORTED 1 /* 0 disables transform code */ #endif /* * Although rotating and flipping data expressed as DCT coefficients is not * hard, there is an asymmetry in the JPEG format specification for images * whose dimensions aren't multiples of the iMCU size. The right and bottom * image edges are padded out to the next iMCU boundary with junk data; but * no padding is possible at the top and left edges. If we were to flip * the whole image including the pad data, then pad garbage would become * visible at the top and/or left, and real pixels would disappear into the * pad margins --- perhaps permanently, since encoders & decoders may not * bother to preserve DCT blocks that appear to be completely outside the * nominal image area. So, we have to exclude any partial iMCUs from the * basic transformation. * * Transpose is the only transformation that can handle partial iMCUs at the * right and bottom edges completely cleanly. flip_h can flip partial iMCUs * at the bottom, but leaves any partial iMCUs at the right edge untouched. * Similarly flip_v leaves any partial iMCUs at the bottom edge untouched. * The other transforms are defined as combinations of these basic transforms * and process edge blocks in a way that preserves the equivalence. * * The "trim" option causes untransformable partial iMCUs to be dropped; * this is not strictly lossless, but it usually gives the best-looking * result for odd-size images. Note that when this option is active, * the expected mathematical equivalences between the transforms may not hold. * (For example, -rot 270 -trim trims only the bottom edge, but -rot 90 -trim * followed by -rot 180 -trim trims both edges.) * * We also offer a lossless-crop option, which discards data outside a given * image region but losslessly preserves what is inside. Like the rotate and * flip transforms, lossless crop is restricted by the JPEG format: the upper * left corner of the selected region must fall on an iMCU boundary. If this * does not hold for the given crop parameters, we silently move the upper left * corner up and/or left to make it so, simultaneously increasing the region * dimensions to keep the lower right crop corner unchanged. (Thus, the * output image covers at least the requested region, but may cover more.) * The adjustment of the region dimensions may be optionally disabled. * * We also provide a lossless-resize option, which is kind of a lossless-crop * operation in the DCT coefficient block domain - it discards higher-order * coefficients and losslessly preserves lower-order coefficients of a * sub-block. * * Rotate/flip transform, resize, and crop can be requested together in a * single invocation. The crop is applied last --- that is, the crop region * is specified in terms of the destination image after transform/resize. * * We also offer a "force to grayscale" option, which simply discards the * chrominance channels of a YCbCr image. This is lossless in the sense that * the luminance channel is preserved exactly. It's not the same kind of * thing as the rotate/flip transformations, but it's convenient to handle it * as part of this package, mainly because the transformation routines have to * be aware of the option to know how many components to work on. */ /* Short forms of external names for systems with brain-damaged linkers. */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jtransform_parse_crop_spec jTrParCrop #define jtransform_request_workspace jTrRequest #define jtransform_adjust_parameters jTrAdjust #define jtransform_execute_transform jTrExec #define jtransform_perfect_transform jTrPerfect #define jcopy_markers_setup jCMrkSetup #define jcopy_markers_execute jCMrkExec #endif /* NEED_SHORT_EXTERNAL_NAMES */ /* * Codes for supported types of image transformations. */ typedef enum { JXFORM_NONE, /* no transformation */ JXFORM_FLIP_H, /* horizontal flip */ JXFORM_FLIP_V, /* vertical flip */ JXFORM_TRANSPOSE, /* transpose across UL-to-LR axis */ JXFORM_TRANSVERSE, /* transpose across UR-to-LL axis */ JXFORM_ROT_90, /* 90-degree clockwise rotation */ JXFORM_ROT_180, /* 180-degree rotation */ JXFORM_ROT_270 /* 270-degree clockwise (or 90 ccw) */ } JXFORM_CODE; /* * Codes for crop parameters, which can individually be unspecified, * positive or negative for xoffset or yoffset, * positive or forced for width or height. */ typedef enum { JCROP_UNSET, JCROP_POS, JCROP_NEG, JCROP_FORCE } JCROP_CODE; /* * Transform parameters struct. * NB: application must not change any elements of this struct after * calling jtransform_request_workspace. */ typedef struct { /* Options: set by caller */ JXFORM_CODE transform; /* image transform operator */ boolean perfect; /* if TRUE, fail if partial MCUs are requested */ boolean trim; /* if TRUE, trim partial MCUs as needed */ boolean force_grayscale; /* if TRUE, convert color image to grayscale */ boolean crop; /* if TRUE, crop source image */ /* Crop parameters: application need not set these unless crop is TRUE. * These can be filled in by jtransform_parse_crop_spec(). */ JDIMENSION crop_width; /* Width of selected region */ JCROP_CODE crop_width_set; /* (forced disables adjustment) */ JDIMENSION crop_height; /* Height of selected region */ JCROP_CODE crop_height_set; /* (forced disables adjustment) */ JDIMENSION crop_xoffset; /* X offset of selected region */ JCROP_CODE crop_xoffset_set; /* (negative measures from right edge) */ JDIMENSION crop_yoffset; /* Y offset of selected region */ JCROP_CODE crop_yoffset_set; /* (negative measures from bottom edge) */ /* Internal workspace: caller should not touch these */ int num_components; /* # of components in workspace */ jvirt_barray_ptr * workspace_coef_arrays; /* workspace for transformations */ JDIMENSION output_width; /* cropped destination dimensions */ JDIMENSION output_height; JDIMENSION x_crop_offset; /* destination crop offsets measured in iMCUs */ JDIMENSION y_crop_offset; int iMCU_sample_width; /* destination iMCU size */ int iMCU_sample_height; } jpeg_transform_info; #if TRANSFORMS_SUPPORTED /* Parse a crop specification (written in X11 geometry style) */ EXTERN(boolean) jtransform_parse_crop_spec JPP((jpeg_transform_info *info, const char *spec)); /* Request any required workspace */ EXTERN(boolean) jtransform_request_workspace JPP((j_decompress_ptr srcinfo, jpeg_transform_info *info)); /* Adjust output image parameters */ EXTERN(jvirt_barray_ptr *) jtransform_adjust_parameters JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, jvirt_barray_ptr *src_coef_arrays, jpeg_transform_info *info)); /* Execute the actual transformation, if any */ EXTERN(void) jtransform_execute_transform JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, jvirt_barray_ptr *src_coef_arrays, jpeg_transform_info *info)); /* Determine whether lossless transformation is perfectly * possible for a specified image and transformation. */ EXTERN(boolean) jtransform_perfect_transform JPP((JDIMENSION image_width, JDIMENSION image_height, int MCU_width, int MCU_height, JXFORM_CODE transform)); /* jtransform_execute_transform used to be called * jtransform_execute_transformation, but some compilers complain about * routine names that long. This macro is here to avoid breaking any * old source code that uses the original name... */ #define jtransform_execute_transformation jtransform_execute_transform #endif /* TRANSFORMS_SUPPORTED */ /* * Support for copying optional markers from source to destination file. */ typedef enum { JCOPYOPT_NONE, /* copy no optional markers */ JCOPYOPT_COMMENTS, /* copy only comment (COM) markers */ JCOPYOPT_ALL /* copy all optional markers */ } JCOPY_OPTION; #define JCOPYOPT_DEFAULT JCOPYOPT_COMMENTS /* recommended default */ /* Setup decompression object to save desired markers in memory */ EXTERN(void) jcopy_markers_setup JPP((j_decompress_ptr srcinfo, JCOPY_OPTION option)); /* Copy markers saved in the given source object to the destination object */ EXTERN(void) jcopy_markers_execute JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, JCOPY_OPTION option)); jpeg-8d1/makefile.vc0000644000175000017500000003415311370270462013142 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is for Microsoft Visual C++ on Windows NT (and 95?). # It builds the IJG library as a statically linkable library (.LIB), # and builds the sample applications as console-mode apps. # Thanks to Xingong Chang, Raymond Everly and others. # Read installation instructions before saying "nmake" !! # To build an optimized library without debug info, say "nmake nodebug=1". # Pull in standard variable definitions !include # You may want to adjust these compiler options: CFLAGS= $(cflags) $(cdebug) $(cvars) -I. # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via -D switches here. # Link-time options: LDFLAGS= $(ldebug) $(conlflags) # To link any special libraries, add the necessary commands here. LDLIBS= $(conlibs) # Put here the object file name for the correct system-dependent memory # manager file. For NT we suggest jmemnobs.obj, which expects the OS to # provide adequate virtual memory. SYSDEPMEM= jmemnobs.obj # miscellaneous OS-dependent stuff # file deletion command RM= del # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.obj jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.obj jcapistd.obj jcarith.obj jctrans.obj jcparam.obj \ jdatadst.obj jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj \ jcprepct.obj jccoefct.obj jccolor.obj jcsample.obj jchuff.obj \ jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj # decompression library object files DLIBOBJECTS= jdapimin.obj jdapistd.obj jdarith.obj jdtrans.obj jdatasrc.obj \ jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdmainct.obj \ jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \ jidctint.obj jdsample.obj jdcolor.obj jquant1.obj jquant2.obj \ jdmerge.obj # These objectfiles are included in libjpeg.lib LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ rdswitch.obj cdjpeg.obj DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ rdcolmap.obj cdjpeg.obj TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj # Template command for compiling .c to .obj .c.obj: $(cc) $(CFLAGS) $*.c all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe libjpeg.lib: $(LIBOBJECTS) $(RM) libjpeg.lib lib -out:libjpeg.lib $(LIBOBJECTS) cjpeg.exe: $(COBJECTS) libjpeg.lib $(link) $(LDFLAGS) -out:cjpeg.exe $(COBJECTS) libjpeg.lib $(LDLIBS) djpeg.exe: $(DOBJECTS) libjpeg.lib $(link) $(LDFLAGS) -out:djpeg.exe $(DOBJECTS) libjpeg.lib $(LDLIBS) jpegtran.exe: $(TROBJECTS) libjpeg.lib $(link) $(LDFLAGS) -out:jpegtran.exe $(TROBJECTS) libjpeg.lib $(LDLIBS) rdjpgcom.exe: rdjpgcom.obj $(link) $(LDFLAGS) -out:rdjpgcom.exe rdjpgcom.obj $(LDLIBS) wrjpgcom.exe: wrjpgcom.obj $(link) $(LDFLAGS) -out:wrjpgcom.exe wrjpgcom.obj $(LDLIBS) clean: $(RM) *.obj *.exe libjpeg.lib $(RM) testout* setup-vc6: ren jconfig.vc jconfig.h ren makejdsw.vc6 jpeg.dsw ren makeadsw.vc6 apps.dsw ren makejmak.vc6 jpeg.mak ren makejdep.vc6 jpeg.dep ren makejdsp.vc6 jpeg.dsp ren makecmak.vc6 cjpeg.mak ren makecdep.vc6 cjpeg.dep ren makecdsp.vc6 cjpeg.dsp ren makedmak.vc6 djpeg.mak ren makeddep.vc6 djpeg.dep ren makeddsp.vc6 djpeg.dsp ren maketmak.vc6 jpegtran.mak ren maketdep.vc6 jpegtran.dep ren maketdsp.vc6 jpegtran.dsp ren makermak.vc6 rdjpgcom.mak ren makerdep.vc6 rdjpgcom.dep ren makerdsp.vc6 rdjpgcom.dsp ren makewmak.vc6 wrjpgcom.mak ren makewdep.vc6 wrjpgcom.dep ren makewdsp.vc6 wrjpgcom.dsp setup-v10: ren jconfig.vc jconfig.h ren makejsln.v10 jpeg.sln ren makeasln.v10 apps.sln ren makejvcx.v10 jpeg.vcxproj ren makejfil.v10 jpeg.vcxproj.filters ren makecvcx.v10 cjpeg.vcxproj ren makecfil.v10 cjpeg.vcxproj.filters ren makedvcx.v10 djpeg.vcxproj ren makedfil.v10 djpeg.vcxproj.filters ren maketvcx.v10 jpegtran.vcxproj ren maketfil.v10 jpegtran.vcxproj.filters ren makervcx.v10 rdjpgcom.vcxproj ren makerfil.v10 rdjpgcom.vcxproj.filters ren makewvcx.v10 wrjpgcom.vcxproj ren makewfil.v10 wrjpgcom.vcxproj.filters test: IF EXIST testout* $(RM) testout* .\djpeg -dct int -ppm -outfile testout.ppm testorig.jpg .\djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg .\cjpeg -dct int -outfile testout.jpg testimg.ppm .\djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg .\cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm .\jpegtran -outfile testoutt.jpg testprog.jpg fc /b testimg.ppm testout.ppm fc /b testimg.bmp testout.bmp fc /b testimg.jpg testout.jpg fc /b testimg.ppm testoutp.ppm fc /b testimgp.jpg testoutp.jpg fc /b testorig.jpg testoutt.jpg test-build: IF EXIST testout* $(RM) testout* .\djpeg\Release\djpeg -dct int -ppm -outfile testout.ppm testorig.jpg .\djpeg\Release\djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg .\cjpeg\Release\cjpeg -dct int -outfile testout.jpg testimg.ppm .\djpeg\Release\djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg .\cjpeg\Release\cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm .\jpegtran\Release\jpegtran -outfile testoutt.jpg testprog.jpg fc /b testimg.ppm testout.ppm fc /b testimg.bmp testout.bmp fc /b testimg.jpg testout.jpg fc /b testimg.ppm testoutp.ppm fc /b testimgp.jpg testoutp.jpg fc /b testorig.jpg testoutt.jpg jaricom.obj: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.obj: jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdarith.obj: jdarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemmac.obj: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.obj: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jpeg-8d1/configure0000755000175000017500000163062511674632472012763 0ustar billbill#! /bin/sh # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.68 for libjpeg 8.4.0. # # # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, # 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software # Foundation, Inc. # # # This configure script is free software; the Free Software Foundation # gives unlimited permission to copy, distribute and modify it. ## -------------------- ## ## M4sh Initialization. ## ## -------------------- ## # Be more Bourne compatible DUALCASE=1; export DUALCASE # for MKS sh if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : emulate sh NULLCMD=: # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which # is contrary to our usage. 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" >&6; } if ${lt_cv_path_NM+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$NM"; then # Let the user override the test. lt_cv_path_NM="$NM" else lt_nm_to_check="${ac_tool_prefix}nm" if test -n "$ac_tool_prefix" && test "$build" = "$host"; then lt_nm_to_check="$lt_nm_to_check nm" fi for lt_tmp_nm in $lt_nm_to_check; do lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do IFS="$lt_save_ifs" test -z "$ac_dir" && ac_dir=. tmp_nm="$ac_dir/$lt_tmp_nm" if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then # Check to see if the nm accepts a BSD-compat flag. # Adding the `sed 1q' prevents false positives on HP-UX, which says: # nm: unknown option "B" ignored # Tru64's nm complains that /dev/null is an invalid object file case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in */dev/null* | *'Invalid file or object type'*) lt_cv_path_NM="$tmp_nm -B" break ;; *) case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in */dev/null*) lt_cv_path_NM="$tmp_nm -p" break ;; *) lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but continue # so that we can try to find one that supports BSD flags ;; esac ;; esac fi done IFS="$lt_save_ifs" done : ${lt_cv_path_NM=no} fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5 $as_echo "$lt_cv_path_NM" >&6; } if test "$lt_cv_path_NM" != "no"; then NM="$lt_cv_path_NM" else # Didn't find any BSD compatible name lister, look for dumpbin. if test -n "$DUMPBIN"; then : # Let the user override the test. else if test -n "$ac_tool_prefix"; then for ac_prog in dumpbin "link -dump" do # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. set dummy $ac_tool_prefix$ac_prog; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_DUMPBIN+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$DUMPBIN"; then ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi DUMPBIN=$ac_cv_prog_DUMPBIN if test -n "$DUMPBIN"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5 $as_echo "$DUMPBIN" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi test -n "$DUMPBIN" && break done fi if test -z "$DUMPBIN"; then ac_ct_DUMPBIN=$DUMPBIN for ac_prog in dumpbin "link -dump" do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_DUMPBIN+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_DUMPBIN"; then ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_DUMPBIN="$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN if test -n "$ac_ct_DUMPBIN"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5 $as_echo "$ac_ct_DUMPBIN" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi test -n "$ac_ct_DUMPBIN" && break done if test "x$ac_ct_DUMPBIN" = x; then DUMPBIN=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DUMPBIN=$ac_ct_DUMPBIN fi fi case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in *COFF*) DUMPBIN="$DUMPBIN -symbols" ;; *) DUMPBIN=: ;; esac fi if test "$DUMPBIN" != ":"; then NM="$DUMPBIN" fi fi test -z "$NM" && NM=nm { $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5 $as_echo_n "checking the name lister ($NM) interface... " >&6; } if ${lt_cv_nm_interface+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_nm_interface="BSD nm" echo "int some_variable = 0;" > conftest.$ac_ext (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5) (eval "$ac_compile" 2>conftest.err) cat conftest.err >&5 (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5) (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out) cat conftest.err >&5 (eval echo "\"\$as_me:$LINENO: output\"" >&5) cat conftest.out >&5 if $GREP 'External.*some_variable' conftest.out > /dev/null; then lt_cv_nm_interface="MS dumpbin" fi rm -f conftest* fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5 $as_echo "$lt_cv_nm_interface" >&6; } # find the maximum length of command line arguments { $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5 $as_echo_n "checking the maximum length of command line arguments... " >&6; } if ${lt_cv_sys_max_cmd_len+:} false; then : $as_echo_n "(cached) " >&6 else i=0 teststring="ABCD" case $build_os in msdosdjgpp*) # On DJGPP, this test can blow up pretty badly due to problems in libc # (any single argument exceeding 2000 bytes causes a buffer overrun # during glob expansion). Even if it were fixed, the result of this # check would be larger than it should be. lt_cv_sys_max_cmd_len=12288; # 12K is about right ;; gnu*) # Under GNU Hurd, this test is not required because there is # no limit to the length of command line arguments. # Libtool will interpret -1 as no limit whatsoever lt_cv_sys_max_cmd_len=-1; ;; cygwin* | mingw* | cegcc*) # On Win9x/ME, this test blows up -- it succeeds, but takes # about 5 minutes as the teststring grows exponentially. # Worse, since 9x/ME are not pre-emptively multitasking, # you end up with a "frozen" computer, even though with patience # the test eventually succeeds (with a max line length of 256k). # Instead, let's just punt: use the minimum linelength reported by # all of the supported platforms: 8192 (on NT/2K/XP). lt_cv_sys_max_cmd_len=8192; ;; mint*) # On MiNT this can take a long time and run out of memory. lt_cv_sys_max_cmd_len=8192; ;; amigaos*) # On AmigaOS with pdksh, this test takes hours, literally. # So we just punt and use a minimum line length of 8192. lt_cv_sys_max_cmd_len=8192; ;; netbsd* | freebsd* | openbsd* | darwin* | dragonfly*) # This has been around since 386BSD, at least. Likely further. if test -x /sbin/sysctl; then lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax` elif test -x /usr/sbin/sysctl; then lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax` else lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs fi # And add a safety zone lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` ;; interix*) # We know the value 262144 and hardcode it with a safety zone (like BSD) lt_cv_sys_max_cmd_len=196608 ;; os2*) # The test takes a long time on OS/2. lt_cv_sys_max_cmd_len=8192 ;; osf*) # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not # nice to cause kernel panics so lets avoid the loop below. # First set a reasonable default. lt_cv_sys_max_cmd_len=16384 # if test -x /sbin/sysconfig; then case `/sbin/sysconfig -q proc exec_disable_arg_limit` in *1*) lt_cv_sys_max_cmd_len=-1 ;; esac fi ;; sco3.2v5*) lt_cv_sys_max_cmd_len=102400 ;; sysv5* | sco5v6* | sysv4.2uw2*) kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null` if test -n "$kargmax"; then lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[ ]//'` else lt_cv_sys_max_cmd_len=32768 fi ;; *) lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null` if test -n "$lt_cv_sys_max_cmd_len"; then lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4` lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3` else # Make teststring a little bigger before we do anything with it. # a 1K string should be a reasonable start. for i in 1 2 3 4 5 6 7 8 ; do teststring=$teststring$teststring done SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}} # If test is not a shell built-in, we'll probably end up computing a # maximum length that is only half of the actual maximum length, but # we can't tell. while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \ = "X$teststring$teststring"; } >/dev/null 2>&1 && test $i != 17 # 1/2 MB should be enough do i=`expr $i + 1` teststring=$teststring$teststring done # Only check the string length outside the loop. lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1` teststring= # Add a significant safety factor because C++ compilers can tack on # massive amounts of additional arguments before passing them to the # linker. It appears as though 1/2 is a usable value. lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2` fi ;; esac fi if test -n $lt_cv_sys_max_cmd_len ; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5 $as_echo "$lt_cv_sys_max_cmd_len" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5 $as_echo "none" >&6; } fi max_cmd_len=$lt_cv_sys_max_cmd_len : ${CP="cp -f"} : ${MV="mv -f"} : ${RM="rm -f"} { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5 $as_echo_n "checking whether the shell understands some XSI constructs... 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" >&6; } if ${lt_cv_to_host_file_cmd+:} false; then : $as_echo_n "(cached) " >&6 else case $host in *-*-mingw* ) case $build in *-*-mingw* ) # actually msys lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32 ;; *-*-cygwin* ) lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32 ;; * ) # otherwise, assume *nix lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32 ;; esac ;; *-*-cygwin* ) case $build in *-*-mingw* ) # actually msys lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin ;; *-*-cygwin* ) lt_cv_to_host_file_cmd=func_convert_file_noop ;; * ) # otherwise, assume *nix lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin ;; esac ;; * ) # unhandled hosts (and "normal" native builds) lt_cv_to_host_file_cmd=func_convert_file_noop ;; esac fi to_host_file_cmd=$lt_cv_to_host_file_cmd { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_host_file_cmd" >&5 $as_echo "$lt_cv_to_host_file_cmd" >&6; } { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to toolchain format" >&5 $as_echo_n "checking how to convert $build file names to toolchain format... " >&6; } if ${lt_cv_to_tool_file_cmd+:} false; then : $as_echo_n "(cached) " >&6 else #assume ordinary cross tools, or native build. lt_cv_to_tool_file_cmd=func_convert_file_noop case $host in *-*-mingw* ) case $build in *-*-mingw* ) # actually msys lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32 ;; esac ;; esac fi to_tool_file_cmd=$lt_cv_to_tool_file_cmd { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_tool_file_cmd" >&5 $as_echo "$lt_cv_to_tool_file_cmd" >&6; } { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5 $as_echo_n "checking for $LD option to reload object files... " >&6; } if ${lt_cv_ld_reload_flag+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_ld_reload_flag='-r' fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5 $as_echo "$lt_cv_ld_reload_flag" >&6; } reload_flag=$lt_cv_ld_reload_flag case $reload_flag in "" | " "*) ;; *) reload_flag=" $reload_flag" ;; esac reload_cmds='$LD$reload_flag -o $output$reload_objs' case $host_os in cygwin* | mingw* | pw32* | cegcc*) if test "$GCC" != yes; then reload_cmds=false fi ;; darwin*) if test "$GCC" = yes; then reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs' else reload_cmds='$LD$reload_flag -o $output$reload_objs' fi ;; esac if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args. set dummy ${ac_tool_prefix}objdump; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OBJDUMP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OBJDUMP"; then ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OBJDUMP=$ac_cv_prog_OBJDUMP if test -n "$OBJDUMP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5 $as_echo "$OBJDUMP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OBJDUMP"; then ac_ct_OBJDUMP=$OBJDUMP # Extract the first word of "objdump", so it can be a program name with args. set dummy objdump; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OBJDUMP"; then ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_OBJDUMP="objdump" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP if test -n "$ac_ct_OBJDUMP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5 $as_echo "$ac_ct_OBJDUMP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OBJDUMP" = x; then OBJDUMP="false" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OBJDUMP=$ac_ct_OBJDUMP fi else OBJDUMP="$ac_cv_prog_OBJDUMP" fi test -z "$OBJDUMP" && OBJDUMP=objdump { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5 $as_echo_n "checking how to recognize dependent libraries... " >&6; } if ${lt_cv_deplibs_check_method+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_file_magic_cmd='$MAGIC_CMD' lt_cv_file_magic_test_file= lt_cv_deplibs_check_method='unknown' # Need to set the preceding variable on all platforms that support # interlibrary dependencies. # 'none' -- dependencies not supported. # `unknown' -- same as none, but documents that we really don't know. # 'pass_all' -- all dependencies passed with no checks. # 'test_compile' -- check by making test program. # 'file_magic [[regex]]' -- check by looking for files in library path # which responds to the $file_magic_cmd with a given extended regex. # If you have `file' or equivalent on your system and you're not sure # whether `pass_all' will *always* work, you probably want this one. case $host_os in aix[4-9]*) lt_cv_deplibs_check_method=pass_all ;; beos*) lt_cv_deplibs_check_method=pass_all ;; bsdi[45]*) lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)' lt_cv_file_magic_cmd='/usr/bin/file -L' lt_cv_file_magic_test_file=/shlib/libc.so ;; cygwin*) # func_win32_libid is a shell function defined in ltmain.sh lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' lt_cv_file_magic_cmd='func_win32_libid' ;; mingw* | pw32*) # Base MSYS/MinGW do not provide the 'file' command needed by # func_win32_libid shell function, so use a weaker test based on 'objdump', # unless we find 'file', for example because we are cross-compiling. # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin. if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL' lt_cv_file_magic_cmd='func_win32_libid' else # Keep this pattern in sync with the one in func_win32_libid. lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' lt_cv_file_magic_cmd='$OBJDUMP -f' fi ;; cegcc*) # use the weaker test based on 'objdump'. See mingw*. lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?' lt_cv_file_magic_cmd='$OBJDUMP -f' ;; darwin* | rhapsody*) lt_cv_deplibs_check_method=pass_all ;; freebsd* | dragonfly*) if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then case $host_cpu in i*86 ) # Not sure whether the presence of OpenBSD here was a mistake. # Let's accept both of them until this is cleared up. lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library' lt_cv_file_magic_cmd=/usr/bin/file lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*` ;; esac else lt_cv_deplibs_check_method=pass_all fi ;; gnu*) lt_cv_deplibs_check_method=pass_all ;; haiku*) lt_cv_deplibs_check_method=pass_all ;; hpux10.20* | hpux11*) lt_cv_file_magic_cmd=/usr/bin/file case $host_cpu in ia64*) lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64' lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so ;; hppa*64*) lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]' lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl ;; *) lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library' lt_cv_file_magic_test_file=/usr/lib/libc.sl ;; esac ;; interix[3-9]*) # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$' ;; irix5* | irix6* | nonstopux*) case $LD in *-32|*"-32 ") libmagic=32-bit;; *-n32|*"-n32 ") libmagic=N32;; *-64|*"-64 ") libmagic=64-bit;; *) libmagic=never-match;; esac lt_cv_deplibs_check_method=pass_all ;; # This must be glibc/ELF. linux* | k*bsd*-gnu | kopensolaris*-gnu) lt_cv_deplibs_check_method=pass_all ;; netbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$' else lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$' fi ;; newos6*) lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)' lt_cv_file_magic_cmd=/usr/bin/file lt_cv_file_magic_test_file=/usr/lib/libnls.so ;; *nto* | *qnx*) lt_cv_deplibs_check_method=pass_all ;; openbsd*) if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$' else lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$' fi ;; osf3* | osf4* | osf5*) lt_cv_deplibs_check_method=pass_all ;; rdos*) lt_cv_deplibs_check_method=pass_all ;; solaris*) lt_cv_deplibs_check_method=pass_all ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) lt_cv_deplibs_check_method=pass_all ;; sysv4 | sysv4.3*) case $host_vendor in motorola) lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]' lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*` ;; ncr) lt_cv_deplibs_check_method=pass_all ;; sequent) lt_cv_file_magic_cmd='/bin/file' lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )' ;; sni) lt_cv_file_magic_cmd='/bin/file' lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib" lt_cv_file_magic_test_file=/lib/libc.so ;; siemens) lt_cv_deplibs_check_method=pass_all ;; pc) lt_cv_deplibs_check_method=pass_all ;; esac ;; tpf*) lt_cv_deplibs_check_method=pass_all ;; esac fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5 $as_echo "$lt_cv_deplibs_check_method" >&6; } file_magic_glob= want_nocaseglob=no if test "$build" = "$host"; then case $host_os in mingw* | pw32*) if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then want_nocaseglob=yes else file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[\1]\/[\1]\/g;/g"` fi ;; esac fi file_magic_cmd=$lt_cv_file_magic_cmd deplibs_check_method=$lt_cv_deplibs_check_method test -z "$deplibs_check_method" && deplibs_check_method=unknown if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args. set dummy ${ac_tool_prefix}dlltool; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_DLLTOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$DLLTOOL"; then ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi DLLTOOL=$ac_cv_prog_DLLTOOL if test -n "$DLLTOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5 $as_echo "$DLLTOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_DLLTOOL"; then ac_ct_DLLTOOL=$DLLTOOL # Extract the first word of "dlltool", so it can be a program name with args. set dummy dlltool; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_DLLTOOL"; then ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_DLLTOOL="dlltool" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL if test -n "$ac_ct_DLLTOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5 $as_echo "$ac_ct_DLLTOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_DLLTOOL" = x; then DLLTOOL="false" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DLLTOOL=$ac_ct_DLLTOOL fi else DLLTOOL="$ac_cv_prog_DLLTOOL" fi test -z "$DLLTOOL" && DLLTOOL=dlltool { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to associate runtime and link libraries" >&5 $as_echo_n "checking how to associate runtime and link libraries... " >&6; } if ${lt_cv_sharedlib_from_linklib_cmd+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_sharedlib_from_linklib_cmd='unknown' case $host_os in cygwin* | mingw* | pw32* | cegcc*) # two different shell functions defined in ltmain.sh # decide which to use based on capabilities of $DLLTOOL case `$DLLTOOL --help 2>&1` in *--identify-strict*) lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib ;; *) lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback ;; esac ;; *) # fallback: assume linklib IS sharedlib lt_cv_sharedlib_from_linklib_cmd="$ECHO" ;; esac fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sharedlib_from_linklib_cmd" >&5 $as_echo "$lt_cv_sharedlib_from_linklib_cmd" >&6; } sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO if test -n "$ac_tool_prefix"; then for ac_prog in ar do # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. set dummy $ac_tool_prefix$ac_prog; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_AR+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$AR"; then ac_cv_prog_AR="$AR" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_AR="$ac_tool_prefix$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi AR=$ac_cv_prog_AR if test -n "$AR"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5 $as_echo "$AR" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi test -n "$AR" && break done fi if test -z "$AR"; then ac_ct_AR=$AR for ac_prog in ar do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_AR+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_AR"; then ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_AR="$ac_prog" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_AR=$ac_cv_prog_ac_ct_AR if test -n "$ac_ct_AR"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5 $as_echo "$ac_ct_AR" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi test -n "$ac_ct_AR" && break done if test "x$ac_ct_AR" = x; then AR="false" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac AR=$ac_ct_AR fi fi : ${AR=ar} : ${AR_FLAGS=cru} { $as_echo "$as_me:${as_lineno-$LINENO}: checking for archiver @FILE support" >&5 $as_echo_n "checking for archiver @FILE support... " >&6; } if ${lt_cv_ar_at_file+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_ar_at_file=no cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main () { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : echo conftest.$ac_objext > conftest.lst lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&5' { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5 (eval $lt_ar_try) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } if test "$ac_status" -eq 0; then # Ensure the archiver fails upon bogus file names. rm -f conftest.$ac_objext libconftest.a { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5 (eval $lt_ar_try) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } if test "$ac_status" -ne 0; then lt_cv_ar_at_file=@ fi fi rm -f conftest.* libconftest.a fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ar_at_file" >&5 $as_echo "$lt_cv_ar_at_file" >&6; } if test "x$lt_cv_ar_at_file" = xno; then archiver_list_spec= else archiver_list_spec=$lt_cv_ar_at_file fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args. set dummy ${ac_tool_prefix}strip; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_STRIP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$STRIP"; then ac_cv_prog_STRIP="$STRIP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_STRIP="${ac_tool_prefix}strip" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi STRIP=$ac_cv_prog_STRIP if test -n "$STRIP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5 $as_echo "$STRIP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_STRIP"; then ac_ct_STRIP=$STRIP # Extract the first word of "strip", so it can be a program name with args. set dummy strip; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_STRIP+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_STRIP"; then ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_STRIP="strip" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP if test -n "$ac_ct_STRIP"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5 $as_echo "$ac_ct_STRIP" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_STRIP" = x; then STRIP=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac STRIP=$ac_ct_STRIP fi else STRIP="$ac_cv_prog_STRIP" fi test -z "$STRIP" && STRIP=: if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args. set dummy ${ac_tool_prefix}ranlib; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_RANLIB+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$RANLIB"; then ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi RANLIB=$ac_cv_prog_RANLIB if test -n "$RANLIB"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5 $as_echo "$RANLIB" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_RANLIB"; then ac_ct_RANLIB=$RANLIB # Extract the first word of "ranlib", so it can be a program name with args. set dummy ranlib; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_RANLIB+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_RANLIB"; then ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_RANLIB="ranlib" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB if test -n "$ac_ct_RANLIB"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5 $as_echo "$ac_ct_RANLIB" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_RANLIB" = x; then RANLIB=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac RANLIB=$ac_ct_RANLIB fi else RANLIB="$ac_cv_prog_RANLIB" fi test -z "$RANLIB" && RANLIB=: # Determine commands to create old-style static archives. old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs' old_postinstall_cmds='chmod 644 $oldlib' old_postuninstall_cmds= if test -n "$RANLIB"; then case $host_os in openbsd*) old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib" ;; *) old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib" ;; esac old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib" fi case $host_os in darwin*) lock_old_archive_extraction=yes ;; *) lock_old_archive_extraction=no ;; esac # If no C compiler was specified, use CC. LTCC=${LTCC-"$CC"} # If no C compiler flags were specified, use CFLAGS. LTCFLAGS=${LTCFLAGS-"$CFLAGS"} # Allow CC to be a program name with arguments. compiler=$CC # Check for command to grab the raw symbol name followed by C symbol from nm. { $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5 $as_echo_n "checking command to parse $NM output from $compiler object... " >&6; } if ${lt_cv_sys_global_symbol_pipe+:} false; then : $as_echo_n "(cached) " >&6 else # These are sane defaults that work on at least a few old systems. # [They come from Ultrix. What could be older than Ultrix?!! ;)] # Character class describing NM global symbol codes. symcode='[BCDEGRST]' # Regexp to match symbols that can be accessed directly from C. sympat='\([_A-Za-z][_A-Za-z0-9]*\)' # Define system-specific variables. case $host_os in aix*) symcode='[BCDT]' ;; cygwin* | mingw* | pw32* | cegcc*) symcode='[ABCDGISTW]' ;; hpux*) if test "$host_cpu" = ia64; then symcode='[ABCDEGRST]' fi ;; irix* | nonstopux*) symcode='[BCDEGRST]' ;; osf*) symcode='[BCDEGQRST]' ;; solaris*) symcode='[BDRT]' ;; sco3.2v5*) symcode='[DT]' ;; sysv4.2uw2*) symcode='[DT]' ;; sysv5* | sco5v6* | unixware* | OpenUNIX*) symcode='[ABDT]' ;; sysv4) symcode='[DFNSTU]' ;; esac # If we're using GNU nm, then use its standard symbol codes. case `$NM -V 2>&1` in *GNU* | *'with BFD'*) symcode='[ABCDGIRSTW]' ;; esac # Transform an extracted symbol line into a proper C declaration. # Some systems (esp. on ia64) link data and code symbols differently, # so use this general approach. lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'" # Transform an extracted symbol line into symbol name and symbol address lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\)[ ]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"\2\", (void *) \&\2},/p'" lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\)[ ]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"lib\2\", (void *) \&\2},/p'" # Handle CRLF in mingw tool chain opt_cr= case $build_os in mingw*) opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp ;; esac # Try without a prefix underscore, then with it. for ac_symprfx in "" "_"; do # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol. symxfrm="\\1 $ac_symprfx\\2 \\2" # Write the raw and C identifiers. if test "$lt_cv_nm_interface" = "MS dumpbin"; then # Fake it for dumpbin and say T for any non-static function # and D for any global variable. # Also find C++ and __fastcall symbols from MSVC++, # which start with @ or ?. lt_cv_sys_global_symbol_pipe="$AWK '"\ " {last_section=section; section=\$ 3};"\ " /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\ " /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\ " \$ 0!~/External *\|/{next};"\ " / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\ " {if(hide[section]) next};"\ " {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\ " {split(\$ 0, a, /\||\r/); split(a[2], s)};"\ " s[1]~/^[@?]/{print s[1], s[1]; next};"\ " s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\ " ' prfx=^$ac_symprfx" else lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'" fi lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'" # Check to see that the pipe works correctly. pipe_works=no rm -f conftest* cat > conftest.$ac_ext <<_LT_EOF #ifdef __cplusplus extern "C" { #endif char nm_test_var; void nm_test_func(void); void nm_test_func(void){} #ifdef __cplusplus } #endif int main(){nm_test_var='a';nm_test_func();return(0);} _LT_EOF if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then # Now try to grab the symbols. nlist=conftest.nm if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5 (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s "$nlist"; then # Try sorting and uniquifying the output. if sort "$nlist" | uniq > "$nlist"T; then mv -f "$nlist"T "$nlist" else rm -f "$nlist"T fi # Make sure that we snagged all the symbols we need. if $GREP ' nm_test_var$' "$nlist" >/dev/null; then if $GREP ' nm_test_func$' "$nlist" >/dev/null; then cat <<_LT_EOF > conftest.$ac_ext /* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */ #if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE) /* DATA imports from DLLs on WIN32 con't be const, because runtime relocations are performed -- see ld's documentation on pseudo-relocs. */ # define LT_DLSYM_CONST #elif defined(__osf__) /* This system does not cope well with relocations in const data. */ # define LT_DLSYM_CONST #else # define LT_DLSYM_CONST const #endif #ifdef __cplusplus extern "C" { #endif _LT_EOF # Now generate the symbol file. eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext' cat <<_LT_EOF >> conftest.$ac_ext /* The mapping between symbol names and symbols. */ LT_DLSYM_CONST struct { const char *name; void *address; } lt__PROGRAM__LTX_preloaded_symbols[] = { { "@PROGRAM@", (void *) 0 }, _LT_EOF $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext cat <<\_LT_EOF >> conftest.$ac_ext {0, (void *) 0} }; /* This works around a problem in FreeBSD linker */ #ifdef FREEBSD_WORKAROUND static const void *lt_preloaded_setup() { return lt__PROGRAM__LTX_preloaded_symbols; } #endif #ifdef __cplusplus } #endif _LT_EOF # Now try linking the two files. mv conftest.$ac_objext conftstm.$ac_objext lt_globsym_save_LIBS=$LIBS lt_globsym_save_CFLAGS=$CFLAGS LIBS="conftstm.$ac_objext" CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag" if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 (eval $ac_link) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s conftest${ac_exeext}; then pipe_works=yes fi LIBS=$lt_globsym_save_LIBS CFLAGS=$lt_globsym_save_CFLAGS else echo "cannot find nm_test_func in $nlist" >&5 fi else echo "cannot find nm_test_var in $nlist" >&5 fi else echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5 fi else echo "$progname: failed program was:" >&5 cat conftest.$ac_ext >&5 fi rm -rf conftest* conftst* # Do not use the global_symbol_pipe unless it works. if test "$pipe_works" = yes; then break else lt_cv_sys_global_symbol_pipe= fi done fi if test -z "$lt_cv_sys_global_symbol_pipe"; then lt_cv_sys_global_symbol_to_cdecl= fi if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5 $as_echo "failed" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5 $as_echo "ok" >&6; } fi # Response file support. if test "$lt_cv_nm_interface" = "MS dumpbin"; then nm_file_list_spec='@' elif $NM --help 2>/dev/null | grep '[@]FILE' >/dev/null; then nm_file_list_spec='@' fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysroot" >&5 $as_echo_n "checking for sysroot... " >&6; } # Check whether --with-sysroot was given. if test "${with_sysroot+set}" = set; then : withval=$with_sysroot; else with_sysroot=no fi lt_sysroot= case ${with_sysroot} in #( yes) if test "$GCC" = yes; then lt_sysroot=`$CC --print-sysroot 2>/dev/null` fi ;; #( /*) lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"` ;; #( no|'') ;; #( *) { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${with_sysroot}" >&5 $as_echo "${with_sysroot}" >&6; } as_fn_error $? "The sysroot must be an absolute path." "$LINENO" 5 ;; esac { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${lt_sysroot:-no}" >&5 $as_echo "${lt_sysroot:-no}" >&6; } # Check whether --enable-libtool-lock was given. if test "${enable_libtool_lock+set}" = set; then : enableval=$enable_libtool_lock; fi test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes # Some flags need to be propagated to the compiler or linker for good # libtool support. case $host in ia64-*-hpux*) # Find out which ABI we are using. echo 'int i;' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then case `/usr/bin/file conftest.$ac_objext` in *ELF-32*) HPUX_IA64_MODE="32" ;; *ELF-64*) HPUX_IA64_MODE="64" ;; esac fi rm -rf conftest* ;; *-*-irix6*) # Find out which ABI we are using. echo '#line '$LINENO' "configure"' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then if test "$lt_cv_prog_gnu_ld" = yes; then case `/usr/bin/file conftest.$ac_objext` in *32-bit*) LD="${LD-ld} -melf32bsmip" ;; *N32*) LD="${LD-ld} -melf32bmipn32" ;; *64-bit*) LD="${LD-ld} -melf64bmip" ;; esac else case `/usr/bin/file conftest.$ac_objext` in *32-bit*) LD="${LD-ld} -32" ;; *N32*) LD="${LD-ld} -n32" ;; *64-bit*) LD="${LD-ld} -64" ;; esac fi fi rm -rf conftest* ;; x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \ s390*-*linux*|s390*-*tpf*|sparc*-*linux*) # Find out which ABI we are using. echo 'int i;' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then case `/usr/bin/file conftest.o` in *32-bit*) case $host in x86_64-*kfreebsd*-gnu) LD="${LD-ld} -m elf_i386_fbsd" ;; x86_64-*linux*) LD="${LD-ld} -m elf_i386" ;; ppc64-*linux*|powerpc64-*linux*) LD="${LD-ld} -m elf32ppclinux" ;; s390x-*linux*) LD="${LD-ld} -m elf_s390" ;; sparc64-*linux*) LD="${LD-ld} -m elf32_sparc" ;; esac ;; *64-bit*) case $host in x86_64-*kfreebsd*-gnu) LD="${LD-ld} -m elf_x86_64_fbsd" ;; x86_64-*linux*) LD="${LD-ld} -m elf_x86_64" ;; ppc*-*linux*|powerpc*-*linux*) LD="${LD-ld} -m elf64ppc" ;; s390*-*linux*|s390*-*tpf*) LD="${LD-ld} -m elf64_s390" ;; sparc*-*linux*) LD="${LD-ld} -m elf64_sparc" ;; esac ;; esac fi rm -rf conftest* ;; *-*-sco3.2v5*) # On SCO OpenServer 5, we need -belf to get full-featured binaries. SAVE_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -belf" { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5 $as_echo_n "checking whether the C compiler needs -belf... " >&6; } if ${lt_cv_cc_needs_belf+:} false; then : $as_echo_n "(cached) " >&6 else ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main () { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : lt_cv_cc_needs_belf=yes else lt_cv_cc_needs_belf=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5 $as_echo "$lt_cv_cc_needs_belf" >&6; } if test x"$lt_cv_cc_needs_belf" != x"yes"; then # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf CFLAGS="$SAVE_CFLAGS" fi ;; *-*solaris*) # Find out which ABI we are using. echo 'int i;' > conftest.$ac_ext if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5 (eval $ac_compile) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; }; then case `/usr/bin/file conftest.o` in *64-bit*) case $lt_cv_prog_gnu_ld in yes*) case $host in i?86-*-solaris*) LD="${LD-ld} -m elf_x86_64" ;; sparc*-*-solaris*) LD="${LD-ld} -m elf64_sparc" ;; esac # GNU ld 2.21 introduced _sol2 emulations. Use them if available. if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then LD="${LD-ld}_sol2" fi ;; *) if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then LD="${LD-ld} -64" fi ;; esac ;; esac fi rm -rf conftest* ;; esac need_locks="$enable_libtool_lock" if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}mt", so it can be a program name with args. set dummy ${ac_tool_prefix}mt; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_MANIFEST_TOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$MANIFEST_TOOL"; then ac_cv_prog_MANIFEST_TOOL="$MANIFEST_TOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi MANIFEST_TOOL=$ac_cv_prog_MANIFEST_TOOL if test -n "$MANIFEST_TOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MANIFEST_TOOL" >&5 $as_echo "$MANIFEST_TOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_MANIFEST_TOOL"; then ac_ct_MANIFEST_TOOL=$MANIFEST_TOOL # Extract the first word of "mt", so it can be a program name with args. set dummy mt; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_MANIFEST_TOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_MANIFEST_TOOL"; then ac_cv_prog_ac_ct_MANIFEST_TOOL="$ac_ct_MANIFEST_TOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_MANIFEST_TOOL="mt" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_MANIFEST_TOOL=$ac_cv_prog_ac_ct_MANIFEST_TOOL if test -n "$ac_ct_MANIFEST_TOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MANIFEST_TOOL" >&5 $as_echo "$ac_ct_MANIFEST_TOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_MANIFEST_TOOL" = x; then MANIFEST_TOOL=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac MANIFEST_TOOL=$ac_ct_MANIFEST_TOOL fi else MANIFEST_TOOL="$ac_cv_prog_MANIFEST_TOOL" fi test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $MANIFEST_TOOL is a manifest tool" >&5 $as_echo_n "checking if $MANIFEST_TOOL is a manifest tool... " >&6; } if ${lt_cv_path_mainfest_tool+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_path_mainfest_tool=no echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&5 $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out cat conftest.err >&5 if $GREP 'Manifest Tool' conftest.out > /dev/null; then lt_cv_path_mainfest_tool=yes fi rm -f conftest* fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_mainfest_tool" >&5 $as_echo "$lt_cv_path_mainfest_tool" >&6; } if test "x$lt_cv_path_mainfest_tool" != xyes; then MANIFEST_TOOL=: fi case $host_os in rhapsody* | darwin*) if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args. set dummy ${ac_tool_prefix}dsymutil; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_DSYMUTIL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$DSYMUTIL"; then ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi DSYMUTIL=$ac_cv_prog_DSYMUTIL if test -n "$DSYMUTIL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5 $as_echo "$DSYMUTIL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_DSYMUTIL"; then ac_ct_DSYMUTIL=$DSYMUTIL # Extract the first word of "dsymutil", so it can be a program name with args. set dummy dsymutil; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_DSYMUTIL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_DSYMUTIL"; then ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_DSYMUTIL="dsymutil" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL if test -n "$ac_ct_DSYMUTIL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5 $as_echo "$ac_ct_DSYMUTIL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_DSYMUTIL" = x; then DSYMUTIL=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DSYMUTIL=$ac_ct_DSYMUTIL fi else DSYMUTIL="$ac_cv_prog_DSYMUTIL" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args. set dummy ${ac_tool_prefix}nmedit; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_NMEDIT+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$NMEDIT"; then ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi NMEDIT=$ac_cv_prog_NMEDIT if test -n "$NMEDIT"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5 $as_echo "$NMEDIT" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_NMEDIT"; then ac_ct_NMEDIT=$NMEDIT # Extract the first word of "nmedit", so it can be a program name with args. set dummy nmedit; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_NMEDIT+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_NMEDIT"; then ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_NMEDIT="nmedit" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT if test -n "$ac_ct_NMEDIT"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5 $as_echo "$ac_ct_NMEDIT" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_NMEDIT" = x; then NMEDIT=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac NMEDIT=$ac_ct_NMEDIT fi else NMEDIT="$ac_cv_prog_NMEDIT" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args. set dummy ${ac_tool_prefix}lipo; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_LIPO+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$LIPO"; then ac_cv_prog_LIPO="$LIPO" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_LIPO="${ac_tool_prefix}lipo" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi LIPO=$ac_cv_prog_LIPO if test -n "$LIPO"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5 $as_echo "$LIPO" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_LIPO"; then ac_ct_LIPO=$LIPO # Extract the first word of "lipo", so it can be a program name with args. set dummy lipo; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_LIPO+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_LIPO"; then ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_LIPO="lipo" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO if test -n "$ac_ct_LIPO"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5 $as_echo "$ac_ct_LIPO" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_LIPO" = x; then LIPO=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac LIPO=$ac_ct_LIPO fi else LIPO="$ac_cv_prog_LIPO" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args. set dummy ${ac_tool_prefix}otool; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OTOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OTOOL"; then ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_OTOOL="${ac_tool_prefix}otool" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OTOOL=$ac_cv_prog_OTOOL if test -n "$OTOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5 $as_echo "$OTOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OTOOL"; then ac_ct_OTOOL=$OTOOL # Extract the first word of "otool", so it can be a program name with args. set dummy otool; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OTOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OTOOL"; then ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_OTOOL="otool" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL if test -n "$ac_ct_OTOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5 $as_echo "$ac_ct_OTOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OTOOL" = x; then OTOOL=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OTOOL=$ac_ct_OTOOL fi else OTOOL="$ac_cv_prog_OTOOL" fi if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args. set dummy ${ac_tool_prefix}otool64; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_OTOOL64+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$OTOOL64"; then ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi OTOOL64=$ac_cv_prog_OTOOL64 if test -n "$OTOOL64"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5 $as_echo "$OTOOL64" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi fi if test -z "$ac_cv_prog_OTOOL64"; then ac_ct_OTOOL64=$OTOOL64 # Extract the first word of "otool64", so it can be a program name with args. set dummy otool64; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... " >&6; } if ${ac_cv_prog_ac_ct_OTOOL64+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_OTOOL64"; then ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then ac_cv_prog_ac_ct_OTOOL64="otool64" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64 if test -n "$ac_ct_OTOOL64"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5 $as_echo "$ac_ct_OTOOL64" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_OTOOL64" = x; then OTOOL64=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac OTOOL64=$ac_ct_OTOOL64 fi else OTOOL64="$ac_cv_prog_OTOOL64" fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5 $as_echo_n "checking for -single_module linker flag... " >&6; } if ${lt_cv_apple_cc_single_mod+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_apple_cc_single_mod=no if test -z "${LT_MULTI_MODULE}"; then # By default we will add the -single_module flag. You can override # by either setting the environment variable LT_MULTI_MODULE # non-empty at configure time, or by adding -multi_module to the # link flags. rm -rf libconftest.dylib* echo "int foo(void){return 1;}" > conftest.c echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ -dynamiclib -Wl,-single_module conftest.c" >&5 $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err _lt_result=$? # If there is a non-empty error log, and "single_module" # appears in it, assume the flag caused a linker warning if test -s conftest.err && $GREP single_module conftest.err; then cat conftest.err >&5 # Otherwise, if the output was created with a 0 exit code from # the compiler, it worked. elif test -f libconftest.dylib && test $_lt_result -eq 0; then lt_cv_apple_cc_single_mod=yes else cat conftest.err >&5 fi rm -rf libconftest.dylib* rm -f conftest.* fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5 $as_echo "$lt_cv_apple_cc_single_mod" >&6; } { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5 $as_echo_n "checking for -exported_symbols_list linker flag... " >&6; } if ${lt_cv_ld_exported_symbols_list+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_ld_exported_symbols_list=no save_LDFLAGS=$LDFLAGS echo "_main" > conftest.sym LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main () { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : lt_cv_ld_exported_symbols_list=yes else lt_cv_ld_exported_symbols_list=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LDFLAGS="$save_LDFLAGS" fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5 $as_echo "$lt_cv_ld_exported_symbols_list" >&6; } { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5 $as_echo_n "checking for -force_load linker flag... 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FIXME archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' else ld_shlibs=no fi ;; cygwin* | mingw* | pw32* | cegcc*) # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless, # as there is no search path for DLLs. hardcode_libdir_flag_spec='-L$libdir' export_dynamic_flag_spec='${wl}--export-all-symbols' allow_undefined_flag=unsupported always_export_symbols=no enable_shared_with_static_runtimes=yes export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/;s/^.*[ ]__nm__\([^ ]*\)[ ][^ ]*/\1 DATA/;/^I[ ]/d;/^[AITW][ ]/s/.* //'\'' | sort | uniq > $export_symbols' exclude_expsyms='[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname' if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' # If the export-symbols file already is a .def file (1st line # is EXPORTS), use it as is; otherwise, prepend... archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then cp $export_symbols $output_objdir/$soname.def; else echo EXPORTS > $output_objdir/$soname.def; cat $export_symbols >> $output_objdir/$soname.def; fi~ $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib' else ld_shlibs=no fi ;; haiku*) archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' link_all_deplibs=yes ;; interix[3-9]*) hardcode_direct=no hardcode_shlibpath_var=no hardcode_libdir_flag_spec='${wl}-rpath,$libdir' export_dynamic_flag_spec='${wl}-E' # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc. # Instead, shared libraries are loaded at an image base (0x10000000 by # default) and relocated if they conflict, which is a slow very memory # consuming and fragmenting process. To avoid this, we pick a random, # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link # time. Moving up from 0x10000000 also allows more sbrk(2) space. archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib' ;; gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu) tmp_diet=no if test "$host_os" = linux-dietlibc; then case $cc_basename in diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn) esac fi if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \ && test "$tmp_diet" = no then tmp_addflag=' $pic_flag' tmp_sharedflag='-shared' case $cc_basename,$host_cpu in pgcc*) # Portland Group C compiler whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive' tmp_addflag=' $pic_flag' ;; pgf77* | pgf90* | pgf95* | pgfortran*) # Portland Group f77 and f90 compilers whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive' tmp_addflag=' $pic_flag -Mnomain' ;; ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64 tmp_addflag=' -i_dynamic' ;; efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64 tmp_addflag=' -i_dynamic -nofor_main' ;; ifc* | ifort*) # Intel Fortran compiler tmp_addflag=' -nofor_main' ;; lf95*) # Lahey Fortran 8.1 whole_archive_flag_spec= tmp_sharedflag='--shared' ;; xl[cC]* | bgxl[cC]* | mpixl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below) tmp_sharedflag='-qmkshrobj' tmp_addflag= ;; nvcc*) # Cuda Compiler Driver 2.2 whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive' compiler_needs_object=yes ;; esac case `$CC -V 2>&1 | sed 5q` in *Sun\ C*) # Sun C 5.9 whole_archive_flag_spec='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive' compiler_needs_object=yes tmp_sharedflag='-G' ;; *Sun\ F*) # Sun Fortran 8.3 tmp_sharedflag='-G' ;; esac archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' if test "x$supports_anon_versioning" = xyes; then archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ echo "local: *; };" >> $output_objdir/$libname.ver~ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib' fi case $cc_basename in xlf* | bgf* | bgxlf* | mpixlf*) # IBM XL Fortran 10.1 on PPC cannot create shared libs itself whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive' hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib' if test "x$supports_anon_versioning" = xyes; then archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~ echo "local: *; };" >> $output_objdir/$libname.ver~ $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib' fi ;; esac else ld_shlibs=no fi ;; netbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib' wlarc= else archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib' fi ;; solaris*) if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then ld_shlibs=no cat <<_LT_EOF 1>&2 *** Warning: The releases 2.8.* of the GNU linker cannot reliably *** create shared libraries on Solaris systems. Therefore, libtool *** is disabling shared libraries support. We urge you to upgrade GNU *** binutils to release 2.9.1 or newer. Another option is to modify *** your PATH or compiler configuration so that the native linker is *** used, and then restart. _LT_EOF elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib' else ld_shlibs=no fi ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*) case `$LD -v 2>&1` in *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*) ld_shlibs=no cat <<_LT_EOF 1>&2 *** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not *** reliably create shared libraries on SCO systems. Therefore, libtool *** is disabling shared libraries support. We urge you to upgrade GNU *** binutils to release 2.16.91.0.3 or newer. Another option is to modify *** your PATH or compiler configuration so that the native linker is *** used, and then restart. _LT_EOF ;; *) # For security reasons, it is highly recommended that you always # use absolute paths for naming shared libraries, and exclude the # DT_RUNPATH tag from executables and libraries. But doing so # requires that you compile everything twice, which is a pain. if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib' else ld_shlibs=no fi ;; esac ;; sunos4*) archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags' wlarc= hardcode_direct=yes hardcode_shlibpath_var=no ;; *) if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib' else ld_shlibs=no fi ;; esac if test "$ld_shlibs" = no; then runpath_var= hardcode_libdir_flag_spec= export_dynamic_flag_spec= whole_archive_flag_spec= fi else # PORTME fill in a description of your system's linker (not GNU ld) case $host_os in aix3*) allow_undefined_flag=unsupported always_export_symbols=yes archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname' # Note: this linker hardcodes the directories in LIBPATH if there # are no directories specified by -L. hardcode_minus_L=yes if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then # Neither direct hardcoding nor static linking is supported with a # broken collect2. hardcode_direct=unsupported fi ;; aix[4-9]*) if test "$host_cpu" = ia64; then # On IA64, the linker does run time linking by default, so we don't # have to do anything special. aix_use_runtimelinking=no exp_sym_flag='-Bexport' no_entry_flag="" else # If we're using GNU nm, then we don't want the "-C" option. # -C means demangle to AIX nm, but means don't demangle with GNU nm # Also, AIX nm treats weak defined symbols like other global # defined symbols, whereas GNU nm marks them as "W". if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols' else export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols' fi aix_use_runtimelinking=no # Test if we are trying to use run time linking or normal # AIX style linking. If -brtl is somewhere in LDFLAGS, we # need to do runtime linking. case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*) for ld_flag in $LDFLAGS; do if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then aix_use_runtimelinking=yes break fi done ;; esac exp_sym_flag='-bexport' no_entry_flag='-bnoentry' fi # When large executables or shared objects are built, AIX ld can # have problems creating the table of contents. If linking a library # or program results in "error TOC overflow" add -mminimal-toc to # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS. archive_cmds='' hardcode_direct=yes hardcode_direct_absolute=yes hardcode_libdir_separator=':' link_all_deplibs=yes file_list_spec='${wl}-f,' if test "$GCC" = yes; then case $host_os in aix4.[012]|aix4.[012].*) # We only want to do this on AIX 4.2 and lower, the check # below for broken collect2 doesn't work under 4.3+ collect2name=`${CC} -print-prog-name=collect2` if test -f "$collect2name" && strings "$collect2name" | $GREP resolve_lib_name >/dev/null then # We have reworked collect2 : else # We have old collect2 hardcode_direct=unsupported # It fails to find uninstalled libraries when the uninstalled # path is not listed in the libpath. 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The following line is correct: shared_flag='-G' else if test "$aix_use_runtimelinking" = yes; then shared_flag='${wl}-G' else shared_flag='${wl}-bM:SRE' fi fi fi export_dynamic_flag_spec='${wl}-bexpall' # It seems that -bexpall does not export symbols beginning with # underscore (_), so it is better to generate a list of symbols to export. always_export_symbols=yes if test "$aix_use_runtimelinking" = yes; then # Warning - without using the other runtime loading flags (-brtl), # -berok will link without error, but may produce a broken library. allow_undefined_flag='-berok' # Determine the default libpath from the value encoded in an # empty executable. if test "${lt_cv_aix_libpath+set}" = set; then aix_libpath=$lt_cv_aix_libpath else if ${lt_cv_aix_libpath_+:} false; then : $as_echo_n "(cached) " >&6 else cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main () { ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : lt_aix_libpath_sed=' /Import File Strings/,/^$/ { /^0/ { s/^0 *\([^ ]*\) *$/\1/ p } }' lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` # Check for a 64-bit object if we didn't find anything. if test -z "$lt_cv_aix_libpath_"; then lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"` fi fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext if test -z "$lt_cv_aix_libpath_"; then lt_cv_aix_libpath_="/usr/lib:/lib" fi fi aix_libpath=$lt_cv_aix_libpath_ fi hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath" archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag" else if test "$host_cpu" = ia64; then hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib' allow_undefined_flag="-z nodefs" archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols" else # Determine the default libpath from the value encoded in an # empty executable. if test "${lt_cv_aix_libpath+set}" = set; 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then # We only use this code for GNU lds that support --whole-archive. whole_archive_flag_spec='${wl}--whole-archive$convenience ${wl}--no-whole-archive' else # Exported symbols can be pulled into shared objects from archives whole_archive_flag_spec='$convenience' fi archive_cmds_need_lc=yes # This is similar to how AIX traditionally builds its shared libraries. archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname' fi fi ;; amigaos*) case $host_cpu in powerpc) # see comment about AmigaOS4 .so support archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib' archive_expsym_cmds='' ;; m68k) archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' hardcode_libdir_flag_spec='-L$libdir' hardcode_minus_L=yes ;; esac ;; bsdi[45]*) export_dynamic_flag_spec=-rdynamic ;; cygwin* | mingw* | pw32* | cegcc*) # When not using gcc, we currently assume that we are using # Microsoft Visual C++. # hardcode_libdir_flag_spec is actually meaningless, as there is # no search path for DLLs. case $cc_basename in cl*) # Native MSVC hardcode_libdir_flag_spec=' ' allow_undefined_flag=unsupported always_export_symbols=yes file_list_spec='@' # Tell ltmain to make .lib files, not .a files. libext=lib # Tell ltmain to make .dll files, not .so files. shrext_cmds=".dll" # FIXME: Setting linknames here is a bad hack. archive_cmds='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames=' archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp; else sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp; fi~ $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~ linknames=' # The linker will not automatically build a static lib if we build a DLL. # _LT_TAGVAR(old_archive_from_new_cmds, )='true' enable_shared_with_static_runtimes=yes exclude_expsyms='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*' export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols' # Don't use ranlib old_postinstall_cmds='chmod 644 $oldlib' postlink_cmds='lt_outputfile="@OUTPUT@"~ lt_tool_outputfile="@TOOL_OUTPUT@"~ case $lt_outputfile in *.exe|*.EXE) ;; *) lt_outputfile="$lt_outputfile.exe" lt_tool_outputfile="$lt_tool_outputfile.exe" ;; esac~ if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1; $RM "$lt_outputfile.manifest"; fi' ;; *) # Assume MSVC wrapper hardcode_libdir_flag_spec=' ' allow_undefined_flag=unsupported # Tell ltmain to make .lib files, not .a files. libext=lib # Tell ltmain to make .dll files, not .so files. shrext_cmds=".dll" # FIXME: Setting linknames here is a bad hack. archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames=' # The linker will automatically build a .lib file if we build a DLL. old_archive_from_new_cmds='true' # FIXME: Should let the user specify the lib program. old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs' enable_shared_with_static_runtimes=yes ;; esac ;; darwin* | rhapsody*) archive_cmds_need_lc=no hardcode_direct=no hardcode_automatic=yes hardcode_shlibpath_var=unsupported if test "$lt_cv_ld_force_load" = "yes"; then whole_archive_flag_spec='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`' else whole_archive_flag_spec='' fi link_all_deplibs=yes allow_undefined_flag="$_lt_dar_allow_undefined" case $cc_basename in ifort*) _lt_dar_can_shared=yes ;; *) _lt_dar_can_shared=$GCC ;; esac if test "$_lt_dar_can_shared" = "yes"; then output_verbose_link_cmd=func_echo_all archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}" module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}" archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}" module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}" else ld_shlibs=no fi ;; dgux*) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_libdir_flag_spec='-L$libdir' hardcode_shlibpath_var=no ;; # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor # support. 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" >&6; } if ${lt_cv_prog_compiler__b+:} false; then : $as_echo_n "(cached) " >&6 else lt_cv_prog_compiler__b=no save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -b" echo "$lt_simple_link_test_code" > conftest.$ac_ext if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then # The linker can only warn and ignore the option if not recognized # So say no if there are warnings if test -s conftest.err; then # Append any errors to the config.log. cat conftest.err 1>&5 $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2 if diff conftest.exp conftest.er2 >/dev/null; then lt_cv_prog_compiler__b=yes fi else lt_cv_prog_compiler__b=yes fi fi $RM -r conftest* LDFLAGS="$save_LDFLAGS" fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5 $as_echo "$lt_cv_prog_compiler__b" >&6; } if test x"$lt_cv_prog_compiler__b" = xyes; then archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags' else archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags' fi ;; esac fi if test "$with_gnu_ld" = no; then hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir' hardcode_libdir_separator=: case $host_cpu in hppa*64*|ia64*) hardcode_direct=no hardcode_shlibpath_var=no ;; *) hardcode_direct=yes hardcode_direct_absolute=yes export_dynamic_flag_spec='${wl}-E' # hardcode_minus_L: Not really in the search PATH, # but as the default location of the library. hardcode_minus_L=yes ;; esac fi ;; irix5* | irix6* | nonstopux*) if test "$GCC" = yes; then archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib' # Try to use the -exported_symbol ld option, if it does not # work, assume that -exports_file does not work either and # implicitly export all symbols. # This should be the same for all languages, so no per-tag cache variable. { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $host_os linker accepts -exported_symbol" >&5 $as_echo_n "checking whether the $host_os linker accepts -exported_symbol... " >&6; } if ${lt_cv_irix_exported_symbol+:} false; then : $as_echo_n "(cached) " >&6 else save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int foo (void) { return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : lt_cv_irix_exported_symbol=yes else lt_cv_irix_exported_symbol=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LDFLAGS="$save_LDFLAGS" fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_irix_exported_symbol" >&5 $as_echo "$lt_cv_irix_exported_symbol" >&6; } if test "$lt_cv_irix_exported_symbol" = yes; then archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib' fi else archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib' archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib' fi archive_cmds_need_lc='no' hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' hardcode_libdir_separator=: inherit_rpath=yes link_all_deplibs=yes ;; netbsd*) if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out else archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF fi hardcode_libdir_flag_spec='-R$libdir' hardcode_direct=yes hardcode_shlibpath_var=no ;; newsos6) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_direct=yes hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' hardcode_libdir_separator=: hardcode_shlibpath_var=no ;; *nto* | *qnx*) ;; openbsd*) if test -f /usr/libexec/ld.so; then hardcode_direct=yes hardcode_shlibpath_var=no hardcode_direct_absolute=yes if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols' hardcode_libdir_flag_spec='${wl}-rpath,$libdir' export_dynamic_flag_spec='${wl}-E' else case $host_os in openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*) archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' hardcode_libdir_flag_spec='-R$libdir' ;; *) archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags' hardcode_libdir_flag_spec='${wl}-rpath,$libdir' ;; esac fi else ld_shlibs=no fi ;; os2*) hardcode_libdir_flag_spec='-L$libdir' hardcode_minus_L=yes allow_undefined_flag=unsupported archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def' old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def' ;; osf3*) if test "$GCC" = yes; then allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*' archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib' else allow_undefined_flag=' -expect_unresolved \*' archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib' fi archive_cmds_need_lc='no' hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' hardcode_libdir_separator=: ;; osf4* | osf5*) # as osf3* with the addition of -msym flag if test "$GCC" = yes; then allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*' archive_cmds='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib' hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir' else allow_undefined_flag=' -expect_unresolved \*' archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib' archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~ $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp' # Both c and cxx compiler support -rpath directly hardcode_libdir_flag_spec='-rpath $libdir' fi archive_cmds_need_lc='no' hardcode_libdir_separator=: ;; solaris*) no_undefined_flag=' -z defs' if test "$GCC" = yes; then wlarc='${wl}' archive_cmds='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags' archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' else case `$CC -V 2>&1` in *"Compilers 5.0"*) wlarc='' archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags' archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp' ;; *) wlarc='${wl}' archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags' archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~ $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp' ;; esac fi hardcode_libdir_flag_spec='-R$libdir' hardcode_shlibpath_var=no case $host_os in solaris2.[0-5] | solaris2.[0-5].*) ;; *) # The compiler driver will combine and reorder linker options, # but understands `-z linker_flag'. GCC discards it without `$wl', # but is careful enough not to reorder. # Supported since Solaris 2.6 (maybe 2.5.1?) if test "$GCC" = yes; then whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract' else whole_archive_flag_spec='-z allextract$convenience -z defaultextract' fi ;; esac link_all_deplibs=yes ;; sunos4*) if test "x$host_vendor" = xsequent; then # Use $CC to link under sequent, because it throws in some extra .o # files that make .init and .fini sections work. archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags' else archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags' fi hardcode_libdir_flag_spec='-L$libdir' hardcode_direct=yes hardcode_minus_L=yes hardcode_shlibpath_var=no ;; sysv4) case $host_vendor in sni) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_direct=yes # is this really true??? ;; siemens) ## LD is ld it makes a PLAMLIB ## CC just makes a GrossModule. archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags' reload_cmds='$CC -r -o $output$reload_objs' hardcode_direct=no ;; motorola) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_direct=no #Motorola manual says yes, but my tests say they lie ;; esac runpath_var='LD_RUN_PATH' hardcode_shlibpath_var=no ;; sysv4.3*) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_shlibpath_var=no export_dynamic_flag_spec='-Bexport' ;; sysv4*MP*) if test -d /usr/nec; then archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_shlibpath_var=no runpath_var=LD_RUN_PATH hardcode_runpath_var=yes ld_shlibs=yes fi ;; sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*) no_undefined_flag='${wl}-z,text' archive_cmds_need_lc=no hardcode_shlibpath_var=no runpath_var='LD_RUN_PATH' if test "$GCC" = yes; then archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags' archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags' else archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags' archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags' fi ;; sysv5* | sco3.2v5* | sco5v6*) # Note: We can NOT use -z defs as we might desire, because we do not # link with -lc, and that would cause any symbols used from libc to # always be unresolved, which means just about no library would # ever link correctly. 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esac else shlibpath_overrides_runpath=yes fi ;; os2*) libname_spec='$name' shrext_cmds=".dll" need_lib_prefix=no library_names_spec='$libname${shared_ext} $libname.a' dynamic_linker='OS/2 ld.exe' shlibpath_var=LIBPATH ;; osf3* | osf4* | osf5*) version_type=osf need_lib_prefix=no need_version=no soname_spec='${libname}${release}${shared_ext}$major' library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}' shlibpath_var=LD_LIBRARY_PATH sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib" sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec" ;; rdos*) dynamic_linker=no ;; solaris*) version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}' soname_spec='${libname}${release}${shared_ext}$major' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes hardcode_into_libs=yes # ldd complains unless libraries are executable postinstall_cmds='chmod +x $lib' ;; sunos4*) version_type=sunos library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix' finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes if test "$with_gnu_ld" = yes; then need_lib_prefix=no fi need_version=yes ;; sysv4 | sysv4.3*) version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}' soname_spec='${libname}${release}${shared_ext}$major' shlibpath_var=LD_LIBRARY_PATH case $host_vendor in sni) shlibpath_overrides_runpath=no need_lib_prefix=no runpath_var=LD_RUN_PATH ;; siemens) need_lib_prefix=no ;; motorola) need_lib_prefix=no need_version=no shlibpath_overrides_runpath=no sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib' ;; esac ;; sysv4*MP*) if test -d /usr/nec ;then version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}' soname_spec='$libname${shared_ext}.$major' shlibpath_var=LD_LIBRARY_PATH fi ;; sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) version_type=freebsd-elf need_lib_prefix=no need_version=no library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}' soname_spec='${libname}${release}${shared_ext}$major' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=yes hardcode_into_libs=yes if test "$with_gnu_ld" = yes; then sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib' else sys_lib_search_path_spec='/usr/ccs/lib /usr/lib' case $host_os in sco3.2v5*) sys_lib_search_path_spec="$sys_lib_search_path_spec /lib" ;; esac fi sys_lib_dlsearch_path_spec='/usr/lib' ;; tpf*) # TPF is a cross-target only. Preferred cross-host = GNU/Linux. version_type=linux # correct to gnu/linux during the next big refactor need_lib_prefix=no need_version=no library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}' shlibpath_var=LD_LIBRARY_PATH shlibpath_overrides_runpath=no hardcode_into_libs=yes ;; uts4*) version_type=linux # correct to gnu/linux during the next big refactor library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}' soname_spec='${libname}${release}${shared_ext}$major' shlibpath_var=LD_LIBRARY_PATH ;; *) dynamic_linker=no ;; esac { $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5 $as_echo "$dynamic_linker" >&6; } test "$dynamic_linker" = no && can_build_shared=no variables_saved_for_relink="PATH $shlibpath_var $runpath_var" if test "$GCC" = yes; then variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH" fi if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec" fi if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec" fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5 $as_echo_n "checking how to hardcode library paths into programs... " >&6; } hardcode_action= if test -n "$hardcode_libdir_flag_spec" || test -n "$runpath_var" || test "X$hardcode_automatic" = "Xyes" ; then # We can hardcode non-existent directories. if test "$hardcode_direct" != no && # If the only mechanism to avoid hardcoding is shlibpath_var, we # have to relink, otherwise we might link with an installed library # when we should be linking with a yet-to-be-installed one ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no && test "$hardcode_minus_L" != no; then # Linking always hardcodes the temporary library directory. hardcode_action=relink else # We can link without hardcoding, and we can hardcode nonexisting dirs. hardcode_action=immediate fi else # We cannot hardcode anything, or else we can only hardcode existing # directories. hardcode_action=unsupported fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5 $as_echo "$hardcode_action" >&6; } if test "$hardcode_action" = relink || test "$inherit_rpath" = yes; then # Fast installation is not supported enable_fast_install=no elif test "$shlibpath_overrides_runpath" = yes || test "$enable_shared" = no; then # Fast installation is not necessary enable_fast_install=needless fi if test "x$enable_dlopen" != xyes; then enable_dlopen=unknown enable_dlopen_self=unknown enable_dlopen_self_static=unknown else lt_cv_dlopen=no lt_cv_dlopen_libs= case $host_os in beos*) lt_cv_dlopen="load_add_on" lt_cv_dlopen_libs= lt_cv_dlopen_self=yes ;; mingw* | pw32* | cegcc*) lt_cv_dlopen="LoadLibrary" lt_cv_dlopen_libs= ;; cygwin*) lt_cv_dlopen="dlopen" lt_cv_dlopen_libs= ;; darwin*) # if libdl is installed we need to link against it { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 $as_echo_n "checking for dlopen in -ldl... " >&6; } if ${ac_cv_lib_dl_dlopen+:} false; then : $as_echo_n "(cached) " >&6 else ac_check_lib_save_LIBS=$LIBS LIBS="-ldl $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. */ #ifdef __cplusplus extern "C" #endif char dlopen (); int main () { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : ac_cv_lib_dl_dlopen=yes else ac_cv_lib_dl_dlopen=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 $as_echo "$ac_cv_lib_dl_dlopen" >&6; } if test "x$ac_cv_lib_dl_dlopen" = xyes; then : lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl" else lt_cv_dlopen="dyld" lt_cv_dlopen_libs= lt_cv_dlopen_self=yes fi ;; *) ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load" if test "x$ac_cv_func_shl_load" = xyes; then : lt_cv_dlopen="shl_load" else { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5 $as_echo_n "checking for shl_load in -ldld... " >&6; } if ${ac_cv_lib_dld_shl_load+:} false; then : $as_echo_n "(cached) " >&6 else ac_check_lib_save_LIBS=$LIBS LIBS="-ldld $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. */ #ifdef __cplusplus extern "C" #endif char shl_load (); int main () { return shl_load (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : ac_cv_lib_dld_shl_load=yes else ac_cv_lib_dld_shl_load=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5 $as_echo "$ac_cv_lib_dld_shl_load" >&6; } if test "x$ac_cv_lib_dld_shl_load" = xyes; then : lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld" else ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen" if test "x$ac_cv_func_dlopen" = xyes; then : lt_cv_dlopen="dlopen" else { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5 $as_echo_n "checking for dlopen in -ldl... " >&6; } if ${ac_cv_lib_dl_dlopen+:} false; then : $as_echo_n "(cached) " >&6 else ac_check_lib_save_LIBS=$LIBS LIBS="-ldl $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. */ #ifdef __cplusplus extern "C" #endif char dlopen (); int main () { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : ac_cv_lib_dl_dlopen=yes else ac_cv_lib_dl_dlopen=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5 $as_echo "$ac_cv_lib_dl_dlopen" >&6; } if test "x$ac_cv_lib_dl_dlopen" = xyes; then : lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl" else { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5 $as_echo_n "checking for dlopen in -lsvld... " >&6; } if ${ac_cv_lib_svld_dlopen+:} false; then : $as_echo_n "(cached) " >&6 else ac_check_lib_save_LIBS=$LIBS LIBS="-lsvld $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. */ #ifdef __cplusplus extern "C" #endif char dlopen (); int main () { return dlopen (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : ac_cv_lib_svld_dlopen=yes else ac_cv_lib_svld_dlopen=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5 $as_echo "$ac_cv_lib_svld_dlopen" >&6; } if test "x$ac_cv_lib_svld_dlopen" = xyes; then : lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld" else { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5 $as_echo_n "checking for dld_link in -ldld... " >&6; } if ${ac_cv_lib_dld_dld_link+:} false; then : $as_echo_n "(cached) " >&6 else ac_check_lib_save_LIBS=$LIBS LIBS="-ldld $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. */ #ifdef __cplusplus extern "C" #endif char dld_link (); int main () { return dld_link (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : ac_cv_lib_dld_dld_link=yes else ac_cv_lib_dld_dld_link=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5 $as_echo "$ac_cv_lib_dld_dld_link" >&6; } if test "x$ac_cv_lib_dld_dld_link" = xyes; then : lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld" fi fi fi fi fi fi ;; esac if test "x$lt_cv_dlopen" != xno; then enable_dlopen=yes else enable_dlopen=no fi case $lt_cv_dlopen in dlopen) save_CPPFLAGS="$CPPFLAGS" test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H" save_LDFLAGS="$LDFLAGS" wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\" save_LIBS="$LIBS" LIBS="$lt_cv_dlopen_libs $LIBS" { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5 $as_echo_n "checking whether a program can dlopen itself... " >&6; } if ${lt_cv_dlopen_self+:} false; then : $as_echo_n "(cached) " >&6 else if test "$cross_compiling" = yes; then : lt_cv_dlopen_self=cross else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF #line $LINENO "configure" #include "confdefs.h" #if HAVE_DLFCN_H #include #endif #include #ifdef RTLD_GLOBAL # define LT_DLGLOBAL RTLD_GLOBAL #else # ifdef DL_GLOBAL # define LT_DLGLOBAL DL_GLOBAL # else # define LT_DLGLOBAL 0 # endif #endif /* We may have to define LT_DLLAZY_OR_NOW in the command line if we find out it does not work in some platform. */ #ifndef LT_DLLAZY_OR_NOW # ifdef RTLD_LAZY # define LT_DLLAZY_OR_NOW RTLD_LAZY # else # ifdef DL_LAZY # define LT_DLLAZY_OR_NOW DL_LAZY # else # ifdef RTLD_NOW # define LT_DLLAZY_OR_NOW RTLD_NOW # else # ifdef DL_NOW # define LT_DLLAZY_OR_NOW DL_NOW # else # define LT_DLLAZY_OR_NOW 0 # endif # endif # endif # endif #endif /* When -fvisbility=hidden is used, assume the code has been annotated correspondingly for the symbols needed. */ #if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) int fnord () __attribute__((visibility("default"))); #endif int fnord () { return 42; } int main () { void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); int status = $lt_dlunknown; if (self) { if (dlsym (self,"fnord")) status = $lt_dlno_uscore; else { if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; else puts (dlerror ()); } /* dlclose (self); */ } else puts (dlerror ()); return status; } _LT_EOF if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 (eval $ac_link) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then (./conftest; exit; ) >&5 2>/dev/null lt_status=$? case x$lt_status in x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;; x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;; x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;; esac else : # compilation failed lt_cv_dlopen_self=no fi fi rm -fr conftest* fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5 $as_echo "$lt_cv_dlopen_self" >&6; } if test "x$lt_cv_dlopen_self" = xyes; then wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\" { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5 $as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; } if ${lt_cv_dlopen_self_static+:} false; then : $as_echo_n "(cached) " >&6 else if test "$cross_compiling" = yes; then : lt_cv_dlopen_self_static=cross else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF #line $LINENO "configure" #include "confdefs.h" #if HAVE_DLFCN_H #include #endif #include #ifdef RTLD_GLOBAL # define LT_DLGLOBAL RTLD_GLOBAL #else # ifdef DL_GLOBAL # define LT_DLGLOBAL DL_GLOBAL # else # define LT_DLGLOBAL 0 # endif #endif /* We may have to define LT_DLLAZY_OR_NOW in the command line if we find out it does not work in some platform. */ #ifndef LT_DLLAZY_OR_NOW # ifdef RTLD_LAZY # define LT_DLLAZY_OR_NOW RTLD_LAZY # else # ifdef DL_LAZY # define LT_DLLAZY_OR_NOW DL_LAZY # else # ifdef RTLD_NOW # define LT_DLLAZY_OR_NOW RTLD_NOW # else # ifdef DL_NOW # define LT_DLLAZY_OR_NOW DL_NOW # else # define LT_DLLAZY_OR_NOW 0 # endif # endif # endif # endif #endif /* When -fvisbility=hidden is used, assume the code has been annotated correspondingly for the symbols needed. */ #if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)) int fnord () __attribute__((visibility("default"))); #endif int fnord () { return 42; } int main () { void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW); int status = $lt_dlunknown; if (self) { if (dlsym (self,"fnord")) status = $lt_dlno_uscore; else { if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore; else puts (dlerror ()); } /* dlclose (self); */ } else puts (dlerror ()); return status; } _LT_EOF if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5 (eval $ac_link) 2>&5 ac_status=$? $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then (./conftest; exit; ) >&5 2>/dev/null lt_status=$? case x$lt_status in x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;; x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;; x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;; esac else : # compilation failed lt_cv_dlopen_self_static=no fi fi rm -fr conftest* fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5 $as_echo "$lt_cv_dlopen_self_static" >&6; } fi CPPFLAGS="$save_CPPFLAGS" LDFLAGS="$save_LDFLAGS" LIBS="$save_LIBS" ;; esac case $lt_cv_dlopen_self in yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;; *) enable_dlopen_self=unknown ;; esac case $lt_cv_dlopen_self_static in yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;; *) enable_dlopen_self_static=unknown ;; esac fi striplib= old_striplib= { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5 $as_echo_n "checking whether stripping libraries is possible... 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|| _lt_function_replace_fail=: fi if test x"$_lt_function_replace_fail" = x":"; then { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Unable to substitute extended shell functions in $ofile" >&5 $as_echo "$as_me: WARNING: Unable to substitute extended shell functions in $ofile" >&2;} fi mv -f "$cfgfile" "$ofile" || (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile") chmod +x "$ofile" ;; esac done # for ac_tag as_fn_exit 0 _ACEOF ac_clean_files=$ac_clean_files_save test $ac_write_fail = 0 || as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 # configure is writing to config.log, and then calls config.status. # config.status does its own redirection, appending to config.log. # Unfortunately, on DOS this fails, as config.log is still kept open # by configure, so config.status won't be able to write to it; its # output is simply discarded. So we exec the FD to /dev/null, # effectively closing config.log, so it can be properly (re)opened and # appended to by config.status. 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Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file provides a simple generic implementation of the system- * dependent portion of the JPEG memory manager. This implementation * assumes that you have the ANSI-standard library routine tmpfile(). * Also, the problem of determining the amount of memory available * is shoved onto the user. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jmemsys.h" /* import the system-dependent declarations */ #ifndef HAVE_STDLIB_H /* should declare malloc(),free() */ extern void * malloc JPP((size_t size)); extern void free JPP((void *ptr)); #endif #ifndef SEEK_SET /* pre-ANSI systems may not define this; */ #define SEEK_SET 0 /* if not, assume 0 is correct */ #endif /* * Memory allocation and freeing are controlled by the regular library * routines malloc() and free(). */ GLOBAL(void *) jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) { return (void *) malloc(sizeofobject); } GLOBAL(void) jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) { free(object); } /* * "Large" objects are treated the same as "small" ones. * NB: although we include FAR keywords in the routine declarations, * this file won't actually work in 80x86 small/medium model; at least, * you probably won't be able to process useful-size images in only 64KB. */ GLOBAL(void FAR *) jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) { return (void FAR *) malloc(sizeofobject); } GLOBAL(void) jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) { free(object); } /* * This routine computes the total memory space available for allocation. * It's impossible to do this in a portable way; our current solution is * to make the user tell us (with a default value set at compile time). * If you can actually get the available space, it's a good idea to subtract * a slop factor of 5% or so. */ #ifndef DEFAULT_MAX_MEM /* so can override from makefile */ #define DEFAULT_MAX_MEM 1000000L /* default: one megabyte */ #endif GLOBAL(long) jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, long max_bytes_needed, long already_allocated) { return cinfo->mem->max_memory_to_use - already_allocated; } /* * Backing store (temporary file) management. * Backing store objects are only used when the value returned by * jpeg_mem_available is less than the total space needed. You can dispense * with these routines if you have plenty of virtual memory; see jmemnobs.c. */ METHODDEF(void) read_backing_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { if (fseek(info->temp_file, file_offset, SEEK_SET)) ERREXIT(cinfo, JERR_TFILE_SEEK); if (JFREAD(info->temp_file, buffer_address, byte_count) != (size_t) byte_count) ERREXIT(cinfo, JERR_TFILE_READ); } METHODDEF(void) write_backing_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { if (fseek(info->temp_file, file_offset, SEEK_SET)) ERREXIT(cinfo, JERR_TFILE_SEEK); if (JFWRITE(info->temp_file, buffer_address, byte_count) != (size_t) byte_count) ERREXIT(cinfo, JERR_TFILE_WRITE); } METHODDEF(void) close_backing_store (j_common_ptr cinfo, backing_store_ptr info) { fclose(info->temp_file); /* Since this implementation uses tmpfile() to create the file, * no explicit file deletion is needed. */ } /* * Initial opening of a backing-store object. * * This version uses tmpfile(), which constructs a suitable file name * behind the scenes. We don't have to use info->temp_name[] at all; * indeed, we can't even find out the actual name of the temp file. */ GLOBAL(void) jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { if ((info->temp_file = tmpfile()) == NULL) ERREXITS(cinfo, JERR_TFILE_CREATE, ""); info->read_backing_store = read_backing_store; info->write_backing_store = write_backing_store; info->close_backing_store = close_backing_store; } /* * These routines take care of any system-dependent initialization and * cleanup required. */ GLOBAL(long) jpeg_mem_init (j_common_ptr cinfo) { return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ } GLOBAL(void) jpeg_mem_term (j_common_ptr cinfo) { /* no work */ } jpeg-8d1/makefile.mms0000644000175000017500000003257611367317470013344 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is for use with MMS on Digital VMS systems. # Thanks to Rick Dyson (dyson@iowasp.physics.uiowa.edu) # and Tim Bell (tbell@netcom.com) for their help. # Read installation instructions before saying "MMS" !! # You may need to adjust these cc options: CFLAGS= $(CFLAGS) /NoDebug /Optimize # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via /Define switches here. .ifdef ALPHA OPT= .else OPT= ,Sys$Disk:[]MAKVMS.OPT/Option .endif # Put here the object file name for the correct system-dependent memory # manager file. For Unix this is usually jmemnobs.o, but you may want # to use jmemansi.o or jmemname.o if you have limited swap space. SYSDEPMEM= jmemnobs.obj # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.obj jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.obj jcapistd.obj jcarith.obj jctrans.obj jcparam.obj \ jdatadst.obj jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj \ jcprepct.obj jccoefct.obj jccolor.obj jcsample.obj jchuff.obj \ jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj # decompression library object files DLIBOBJECTS= jdapimin.obj jdapistd.obj jdarith.obj jdtrans.obj jdatasrc.obj \ jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdmainct.obj \ jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \ jidctint.obj jdsample.obj jdcolor.obj jquant1.obj jquant2.obj \ jdmerge.obj # These objectfiles are included in libjpeg.olb LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ rdswitch.obj cdjpeg.obj DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ rdcolmap.obj cdjpeg.obj TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj # objectfile lists with commas --- what a crock COBJLIST= cjpeg.obj,rdppm.obj,rdgif.obj,rdtarga.obj,rdrle.obj,rdbmp.obj,\ rdswitch.obj,cdjpeg.obj DOBJLIST= djpeg.obj,wrppm.obj,wrgif.obj,wrtarga.obj,wrrle.obj,wrbmp.obj,\ rdcolmap.obj,cdjpeg.obj TROBJLIST= jpegtran.obj,rdswitch.obj,cdjpeg.obj,transupp.obj LIBOBJLIST= jaricom.obj,jcapimin.obj,jcapistd.obj,jcarith.obj,jctrans.obj,\ jcparam.obj,jdatadst.obj,jcinit.obj,jcmaster.obj,jcmarker.obj,\ jcmainct.obj,jcprepct.obj,jccoefct.obj,jccolor.obj,jcsample.obj,\ jchuff.obj,jcdctmgr.obj,jfdctfst.obj,jfdctflt.obj,jfdctint.obj,\ jdapimin.obj,jdapistd.obj,jdarith.obj,jdtrans.obj,jdatasrc.obj,\ jdmaster.obj,jdinput.obj,jdmarker.obj,jdhuff.obj,jdmainct.obj,\ jdcoefct.obj,jdpostct.obj,jddctmgr.obj,jidctfst.obj,jidctflt.obj,\ jidctint.obj,jdsample.obj,jdcolor.obj,jquant1.obj,jquant2.obj,\ jdmerge.obj,jcomapi.obj,jutils.obj,jerror.obj,jmemmgr.obj,$(SYSDEPMEM) .first @- Define /NoLog Sys Sys$Library ALL : libjpeg.olb cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe @ Continue libjpeg.olb : $(LIBOBJECTS) Library /Create libjpeg.olb $(LIBOBJLIST) cjpeg.exe : $(COBJECTS) libjpeg.olb $(LINK) $(LFLAGS) /Executable = cjpeg.exe $(COBJLIST),libjpeg.olb/Library$(OPT) djpeg.exe : $(DOBJECTS) libjpeg.olb $(LINK) $(LFLAGS) /Executable = djpeg.exe $(DOBJLIST),libjpeg.olb/Library$(OPT) jpegtran.exe : $(TROBJECTS) libjpeg.olb $(LINK) $(LFLAGS) /Executable = jpegtran.exe $(TROBJLIST),libjpeg.olb/Library$(OPT) rdjpgcom.exe : rdjpgcom.obj $(LINK) $(LFLAGS) /Executable = rdjpgcom.exe rdjpgcom.obj$(OPT) wrjpgcom.exe : wrjpgcom.obj $(LINK) $(LFLAGS) /Executable = wrjpgcom.exe wrjpgcom.obj$(OPT) jconfig.h : jconfig.vms @- Copy jconfig.vms jconfig.h clean : @- Set Protection = Owner:RWED *.*;-1 @- Set Protection = Owner:RWED *.OBJ - Purge /NoLog /NoConfirm *.* - Delete /NoLog /NoConfirm *.OBJ; test : cjpeg.exe djpeg.exe jpegtran.exe mcr sys$disk:[]djpeg -dct int -ppm -outfile testout.ppm testorig.jpg mcr sys$disk:[]djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg mcr sys$disk:[]cjpeg -dct int -outfile testout.jpg testimg.ppm mcr sys$disk:[]djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg mcr sys$disk:[]cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm mcr sys$disk:[]jpegtran -outfile testoutt.jpg testprog.jpg - Backup /Compare/Log testimg.ppm testout.ppm - Backup /Compare/Log testimg.bmp testout.bmp - Backup /Compare/Log testimg.jpg testout.jpg - Backup /Compare/Log testimg.ppm testoutp.ppm - Backup /Compare/Log testimgp.jpg testoutp.jpg - Backup /Compare/Log testorig.jpg testoutt.jpg jaricom.obj : jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.obj : jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.obj : jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.obj : jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.obj : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.obj : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.obj : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.obj : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.obj : jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.obj : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.obj : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.obj : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.obj : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.obj : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.obj : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.obj : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.obj : jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.obj : jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapistd.obj : jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdarith.obj : jdarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdatadst.obj : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdatasrc.obj : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdcoefct.obj : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdcolor.obj : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jddctmgr.obj : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jdhuff.obj : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdinput.obj : jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmainct.obj : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmarker.obj : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmaster.obj : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmerge.obj : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdpostct.obj : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdsample.obj : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdtrans.obj : jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jerror.obj : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h jfdctflt.obj : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctfst.obj : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctint.obj : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctflt.obj : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctfst.obj : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctint.obj : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jquant1.obj : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jquant2.obj : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jutils.obj : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemmgr.obj : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemansi.obj : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemname.obj : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemnobs.obj : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemdos.obj : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemmac.obj : jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h cjpeg.obj : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h djpeg.obj : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h jpegtran.obj : jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h rdjpgcom.obj : rdjpgcom.c jinclude.h jconfig.h wrjpgcom.obj : wrjpgcom.c jinclude.h jconfig.h cdjpeg.obj : cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdcolmap.obj : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdswitch.obj : rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.obj : transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h rdppm.obj : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrppm.obj : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdgif.obj : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrgif.obj : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdtarga.obj : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrtarga.obj : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdbmp.obj : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrbmp.obj : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdrle.obj : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrrle.obj : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jpeg-8d1/jdct.h0000644000175000017500000004137110022422006012112 0ustar billbill/* * jdct.h * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This include file contains common declarations for the forward and * inverse DCT modules. These declarations are private to the DCT managers * (jcdctmgr.c, jddctmgr.c) and the individual DCT algorithms. * The individual DCT algorithms are kept in separate files to ease * machine-dependent tuning (e.g., assembly coding). */ /* * A forward DCT routine is given a pointer to an input sample array and * a pointer to a work area of type DCTELEM[]; the DCT is to be performed * in-place in that buffer. Type DCTELEM is int for 8-bit samples, INT32 * for 12-bit samples. (NOTE: Floating-point DCT implementations use an * array of type FAST_FLOAT, instead.) * The input data is to be fetched from the sample array starting at a * specified column. (Any row offset needed will be applied to the array * pointer before it is passed to the FDCT code.) * Note that the number of samples fetched by the FDCT routine is * DCT_h_scaled_size * DCT_v_scaled_size. * The DCT outputs are returned scaled up by a factor of 8; they therefore * have a range of +-8K for 8-bit data, +-128K for 12-bit data. This * convention improves accuracy in integer implementations and saves some * work in floating-point ones. * Quantization of the output coefficients is done by jcdctmgr.c. */ #if BITS_IN_JSAMPLE == 8 typedef int DCTELEM; /* 16 or 32 bits is fine */ #else typedef INT32 DCTELEM; /* must have 32 bits */ #endif typedef JMETHOD(void, forward_DCT_method_ptr, (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); typedef JMETHOD(void, float_DCT_method_ptr, (FAST_FLOAT * data, JSAMPARRAY sample_data, JDIMENSION start_col)); /* * An inverse DCT routine is given a pointer to the input JBLOCK and a pointer * to an output sample array. The routine must dequantize the input data as * well as perform the IDCT; for dequantization, it uses the multiplier table * pointed to by compptr->dct_table. The output data is to be placed into the * sample array starting at a specified column. (Any row offset needed will * be applied to the array pointer before it is passed to the IDCT code.) * Note that the number of samples emitted by the IDCT routine is * DCT_h_scaled_size * DCT_v_scaled_size. */ /* typedef inverse_DCT_method_ptr is declared in jpegint.h */ /* * Each IDCT routine has its own ideas about the best dct_table element type. */ typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */ #if BITS_IN_JSAMPLE == 8 typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */ #define IFAST_SCALE_BITS 2 /* fractional bits in scale factors */ #else typedef INT32 IFAST_MULT_TYPE; /* need 32 bits for scaled quantizers */ #define IFAST_SCALE_BITS 13 /* fractional bits in scale factors */ #endif typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */ /* * Each IDCT routine is responsible for range-limiting its results and * converting them to unsigned form (0..MAXJSAMPLE). The raw outputs could * be quite far out of range if the input data is corrupt, so a bulletproof * range-limiting step is required. We use a mask-and-table-lookup method * to do the combined operations quickly. See the comments with * prepare_range_limit_table (in jdmaster.c) for more info. */ #define IDCT_range_limit(cinfo) ((cinfo)->sample_range_limit + CENTERJSAMPLE) #define RANGE_MASK (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */ /* Short forms of external names for systems with brain-damaged linkers. */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jpeg_fdct_islow jFDislow #define jpeg_fdct_ifast jFDifast #define jpeg_fdct_float jFDfloat #define jpeg_fdct_7x7 jFD7x7 #define jpeg_fdct_6x6 jFD6x6 #define jpeg_fdct_5x5 jFD5x5 #define jpeg_fdct_4x4 jFD4x4 #define jpeg_fdct_3x3 jFD3x3 #define jpeg_fdct_2x2 jFD2x2 #define jpeg_fdct_1x1 jFD1x1 #define jpeg_fdct_9x9 jFD9x9 #define jpeg_fdct_10x10 jFD10x10 #define jpeg_fdct_11x11 jFD11x11 #define jpeg_fdct_12x12 jFD12x12 #define jpeg_fdct_13x13 jFD13x13 #define jpeg_fdct_14x14 jFD14x14 #define jpeg_fdct_15x15 jFD15x15 #define jpeg_fdct_16x16 jFD16x16 #define jpeg_fdct_16x8 jFD16x8 #define jpeg_fdct_14x7 jFD14x7 #define jpeg_fdct_12x6 jFD12x6 #define jpeg_fdct_10x5 jFD10x5 #define jpeg_fdct_8x4 jFD8x4 #define jpeg_fdct_6x3 jFD6x3 #define jpeg_fdct_4x2 jFD4x2 #define jpeg_fdct_2x1 jFD2x1 #define jpeg_fdct_8x16 jFD8x16 #define jpeg_fdct_7x14 jFD7x14 #define jpeg_fdct_6x12 jFD6x12 #define jpeg_fdct_5x10 jFD5x10 #define jpeg_fdct_4x8 jFD4x8 #define jpeg_fdct_3x6 jFD3x6 #define jpeg_fdct_2x4 jFD2x4 #define jpeg_fdct_1x2 jFD1x2 #define jpeg_idct_islow jRDislow #define jpeg_idct_ifast jRDifast #define jpeg_idct_float jRDfloat #define jpeg_idct_7x7 jRD7x7 #define jpeg_idct_6x6 jRD6x6 #define jpeg_idct_5x5 jRD5x5 #define jpeg_idct_4x4 jRD4x4 #define jpeg_idct_3x3 jRD3x3 #define jpeg_idct_2x2 jRD2x2 #define jpeg_idct_1x1 jRD1x1 #define jpeg_idct_9x9 jRD9x9 #define jpeg_idct_10x10 jRD10x10 #define jpeg_idct_11x11 jRD11x11 #define jpeg_idct_12x12 jRD12x12 #define jpeg_idct_13x13 jRD13x13 #define jpeg_idct_14x14 jRD14x14 #define jpeg_idct_15x15 jRD15x15 #define jpeg_idct_16x16 jRD16x16 #define jpeg_idct_16x8 jRD16x8 #define jpeg_idct_14x7 jRD14x7 #define jpeg_idct_12x6 jRD12x6 #define jpeg_idct_10x5 jRD10x5 #define jpeg_idct_8x4 jRD8x4 #define jpeg_idct_6x3 jRD6x3 #define jpeg_idct_4x2 jRD4x2 #define jpeg_idct_2x1 jRD2x1 #define jpeg_idct_8x16 jRD8x16 #define jpeg_idct_7x14 jRD7x14 #define jpeg_idct_6x12 jRD6x12 #define jpeg_idct_5x10 jRD5x10 #define jpeg_idct_4x8 jRD4x8 #define jpeg_idct_3x6 jRD3x8 #define jpeg_idct_2x4 jRD2x4 #define jpeg_idct_1x2 jRD1x2 #endif /* NEED_SHORT_EXTERNAL_NAMES */ /* Extern declarations for the forward and inverse DCT routines. */ EXTERN(void) jpeg_fdct_islow JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_ifast JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_float JPP((FAST_FLOAT * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_7x7 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_6x6 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_5x5 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_4x4 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_3x3 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_2x2 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_1x1 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_9x9 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_10x10 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_11x11 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_12x12 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_13x13 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_14x14 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_15x15 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_16x16 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_16x8 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_14x7 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_12x6 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_10x5 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_8x4 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_6x3 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_4x2 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_2x1 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_8x16 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_7x14 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_6x12 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_5x10 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_4x8 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_3x6 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_2x4 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_fdct_1x2 JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col)); EXTERN(void) jpeg_idct_islow JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_ifast JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_float JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_7x7 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_6x6 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_5x5 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_4x4 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_3x3 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_2x2 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_1x1 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_9x9 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_10x10 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_11x11 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_12x12 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_13x13 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_14x14 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_15x15 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_16x16 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_16x8 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_14x7 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_12x6 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_10x5 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_8x4 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_6x3 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_4x2 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_2x1 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_8x16 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_7x14 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_6x12 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_5x10 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_4x8 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_3x6 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_2x4 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); EXTERN(void) jpeg_idct_1x2 JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); /* * Macros for handling fixed-point arithmetic; these are used by many * but not all of the DCT/IDCT modules. * * All values are expected to be of type INT32. * Fractional constants are scaled left by CONST_BITS bits. * CONST_BITS is defined within each module using these macros, * and may differ from one module to the next. */ #define ONE ((INT32) 1) #define CONST_SCALE (ONE << CONST_BITS) /* Convert a positive real constant to an integer scaled by CONST_SCALE. * Caution: some C compilers fail to reduce "FIX(constant)" at compile time, * thus causing a lot of useless floating-point operations at run time. */ #define FIX(x) ((INT32) ((x) * CONST_SCALE + 0.5)) /* Descale and correctly round an INT32 value that's scaled by N bits. * We assume RIGHT_SHIFT rounds towards minus infinity, so adding * the fudge factor is correct for either sign of X. */ #define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) /* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. * This macro is used only when the two inputs will actually be no more than * 16 bits wide, so that a 16x16->32 bit multiply can be used instead of a * full 32x32 multiply. This provides a useful speedup on many machines. * Unfortunately there is no way to specify a 16x16->32 multiply portably * in C, but some C compilers will do the right thing if you provide the * correct combination of casts. */ #ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */ #define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT16) (const))) #endif #ifdef SHORTxLCONST_32 /* known to work with Microsoft C 6.0 */ #define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT32) (const))) #endif #ifndef MULTIPLY16C16 /* default definition */ #define MULTIPLY16C16(var,const) ((var) * (const)) #endif /* Same except both inputs are variables. */ #ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */ #define MULTIPLY16V16(var1,var2) (((INT16) (var1)) * ((INT16) (var2))) #endif #ifndef MULTIPLY16V16 /* default definition */ #define MULTIPLY16V16(var1,var2) ((var1) * (var2)) #endif jpeg-8d1/change.log0000644000175000017500000003342211704513020012750 0ustar billbillCHANGE LOG for Independent JPEG Group's JPEG software Version 8d 15-Jan-2012 ----------------------- Add cjpeg -rgb option to create RGB JPEG files. Using this switch suppresses the conversion from RGB colorspace input to the default YCbCr JPEG colorspace. This feature allows true lossless JPEG coding of RGB color images. The recommended command for this purpose is currently cjpeg -rgb -block 1 -arithmetic. SmartScale capable decoder (introduced with IJG JPEG 8) required. Thank to Michael Koch for the initial suggestion. Add option to disable the region adjustment in the transupp crop code. Thank to Jeffrey Friedl for the suggestion. Thank to Richard Jones and Edd Dawson for various minor corrections. Thank to Akim Demaille for configure.ac cleanup. Version 8c 16-Jan-2011 ----------------------- Add option to compression library and cjpeg (-block N) to use different DCT block size. All N from 1 to 16 are possible. Default is 8 (baseline format). Larger values produce higher compression, smaller values produce higher quality. SmartScale capable decoder (introduced with IJG JPEG 8) required. Version 8b 16-May-2010 ----------------------- Repair problem in new memory source manager with corrupt JPEG data. Thank to Ted Campbell and Samuel Chun for the report. Repair problem in Makefile.am test target. Thank to anonymous user for the report. Support MinGW installation with automatic configure. Thank to Volker Grabsch for the suggestion. Version 8a 28-Feb-2010 ----------------------- Writing tables-only datastreams via jpeg_write_tables works again. Support 32-bit BMPs (RGB image with Alpha channel) for read in cjpeg. Thank to Brett Blackham for the suggestion. Improve accuracy in floating point IDCT calculation. Thank to Robert Hooke for the hint. Version 8 10-Jan-2010 ---------------------- jpegtran now supports the same -scale option as djpeg for "lossless" resize. An implementation of the JPEG SmartScale extension is required for this feature. A (draft) specification of the JPEG SmartScale extension is available as a contributed document at ITU and ISO. Revision 2 or later of the document is required (latest document version is Revision 3). The SmartScale extension will enable more features beside lossless resize in future implementations, as described in the document (new compression options). Add sanity check in BMP reader module to avoid cjpeg crash for empty input image (thank to Isaev Ildar of ISP RAS, Moscow, RU for reporting this error). Add data source and destination managers for read from and write to memory buffers. New API functions jpeg_mem_src and jpeg_mem_dest. Thank to Roberto Boni from Italy for the suggestion. Version 7 27-Jun-2009 ---------------------- New scaled DCTs implemented. djpeg now supports scalings N/8 with all N from 1 to 16. cjpeg now supports scalings 8/N with all N from 1 to 16. Scaled DCTs with size larger than 8 are now also used for resolving the common 2x2 chroma subsampling case without additional spatial resampling. Separate spatial resampling for those kind of files is now only necessary for N>8 scaling cases. Furthermore, separate scaled DCT functions are provided for direct resolving of the common asymmetric subsampling cases (2x1 and 1x2) without additional spatial resampling. cjpeg -quality option has been extended for support of separate quality settings for luminance and chrominance (or in general, for every provided quantization table slot). New API function jpeg_default_qtables() and q_scale_factor array in library. Added -nosmooth option to cjpeg, complementary to djpeg. New variable "do_fancy_downsampling" in library, complement to fancy upsampling. Fancy upsampling now uses direct DCT scaling with sizes larger than 8. The old method is not reversible and has been removed. Support arithmetic entropy encoding and decoding. Added files jaricom.c, jcarith.c, jdarith.c. Straighten the file structure: Removed files jidctred.c, jcphuff.c, jchuff.h, jdphuff.c, jdhuff.h. jpegtran has a new "lossless" cropping feature. Implement -perfect option in jpegtran, new API function jtransform_perfect_transform() in transupp. (DP 204_perfect.dpatch) Better error messages for jpegtran fopen failure. (DP 203_jpegtran_errmsg.dpatch) Fix byte order issue with 16bit PPM/PGM files in rdppm.c/wrppm.c: according to Netpbm, the de facto standard implementation of the PNM formats, the most significant byte is first. (DP 203_rdppm.dpatch) Add -raw option to rdjpgcom not to mangle the output. (DP 205_rdjpgcom_raw.dpatch) Make rdjpgcom locale aware. (DP 201_rdjpgcom_locale.dpatch) Add extern "C" to jpeglib.h. This avoids the need to put extern "C" { ... } around #include "jpeglib.h" in your C++ application. Defining the symbol DONT_USE_EXTERN_C in the configuration prevents this. (DP 202_jpeglib.h_c++.dpatch) Version 6b 27-Mar-1998 ----------------------- jpegtran has new features for lossless image transformations (rotation and flipping) as well as "lossless" reduction to grayscale. jpegtran now copies comments by default; it has a -copy switch to enable copying all APPn blocks as well, or to suppress comments. (Formerly it always suppressed comments and APPn blocks.) jpegtran now also preserves JFIF version and resolution information. New decompressor library feature: COM and APPn markers found in the input file can be saved in memory for later use by the application. (Before, you had to code this up yourself with a custom marker processor.) There is an unused field "void * client_data" now in compress and decompress parameter structs; this may be useful in some applications. JFIF version number information is now saved by the decoder and accepted by the encoder. jpegtran uses this to copy the source file's version number, to ensure "jpegtran -copy all" won't create bogus files that contain JFXX extensions but claim to be version 1.01. Applications that generate their own JFXX extension markers also (finally) have a supported way to cause the encoder to emit JFIF version number 1.02. djpeg's trace mode reports JFIF 1.02 thumbnail images as such, rather than as unknown APP0 markers. In -verbose mode, djpeg and rdjpgcom will try to print the contents of APP12 markers as text. Some digital cameras store useful text information in APP12 markers. Handling of truncated data streams is more robust: blocks beyond the one in which the error occurs will be output as uniform gray, or left unchanged if decoding a progressive JPEG. The appearance no longer depends on the Huffman tables being used. Huffman tables are checked for validity much more carefully than before. To avoid the Unisys LZW patent, djpeg's GIF output capability has been changed to produce "uncompressed GIFs", and cjpeg's GIF input capability has been removed altogether. We're not happy about it either, but there seems to be no good alternative. The configure script now supports building libjpeg as a shared library on many flavors of Unix (all the ones that GNU libtool knows how to build shared libraries for). Use "./configure --enable-shared" to try this out. New jconfig file and makefiles for Microsoft Visual C++ and Developer Studio. Also, a jconfig file and a build script for Metrowerks CodeWarrior on Apple Macintosh. makefile.dj has been updated for DJGPP v2, and there are miscellaneous other minor improvements in the makefiles. jmemmac.c now knows how to create temporary files following Mac System 7 conventions. djpeg's -map switch is now able to read raw-format PPM files reliably. cjpeg -progressive -restart no longer generates any unnecessary DRI markers. Multiple calls to jpeg_simple_progression for a single JPEG object no longer leak memory. Version 6a 7-Feb-96 -------------------- Library initialization sequence modified to detect version mismatches and struct field packing mismatches between library and calling application. This change requires applications to be recompiled, but does not require any application source code change. All routine declarations changed to the style "GLOBAL(type) name ...", that is, GLOBAL, LOCAL, METHODDEF, EXTERN are now macros taking the routine's return type as an argument. This makes it possible to add Microsoft-style linkage keywords to all the routines by changing just these macros. Note that any application code that was using these macros will have to be changed. DCT coefficient quantization tables are now stored in normal array order rather than zigzag order. Application code that calls jpeg_add_quant_table, or otherwise manipulates quantization tables directly, will need to be changed. If you need to make such code work with either older or newer versions of the library, a test like "#if JPEG_LIB_VERSION >= 61" is recommended. djpeg's trace capability now dumps DQT tables in natural order, not zigzag order. This allows the trace output to be made into a "-qtables" file more easily. New system-dependent memory manager module for use on Apple Macintosh. Fix bug in cjpeg's -smooth option: last one or two scanlines would be duplicates of the prior line unless the image height mod 16 was 1 or 2. Repair minor problems in VMS, BCC, MC6 makefiles. New configure script based on latest GNU Autoconf. Correct the list of include files needed by MetroWerks C for ccommand(). Numerous small documentation updates. Version 6 2-Aug-95 ------------------- Progressive JPEG support: library can read and write full progressive JPEG files. A "buffered image" mode supports incremental decoding for on-the-fly display of progressive images. Simply recompiling an existing IJG-v5-based decoder with v6 should allow it to read progressive files, though of course without any special progressive display. New "jpegtran" application performs lossless transcoding between different JPEG formats; primarily, it can be used to convert baseline to progressive JPEG and vice versa. In support of jpegtran, the library now allows lossless reading and writing of JPEG files as DCT coefficient arrays. This ability may be of use in other applications. Notes for programmers: * We changed jpeg_start_decompress() to be able to suspend; this makes all decoding modes available to suspending-input applications. However, existing applications that use suspending input will need to be changed to check the return value from jpeg_start_decompress(). You don't need to do anything if you don't use a suspending data source. * We changed the interface to the virtual array routines: access_virt_array routines now take a count of the number of rows to access this time. The last parameter to request_virt_array routines is now interpreted as the maximum number of rows that may be accessed at once, but not necessarily the height of every access. Version 5b 15-Mar-95 --------------------- Correct bugs with grayscale images having v_samp_factor > 1. jpeg_write_raw_data() now supports output suspension. Correct bugs in "configure" script for case of compiling in a directory other than the one containing the source files. Repair bug in jquant1.c: sometimes didn't use as many colors as it could. Borland C makefile and jconfig file work under either MS-DOS or OS/2. Miscellaneous improvements to documentation. Version 5a 7-Dec-94 -------------------- Changed color conversion roundoff behavior so that grayscale values are represented exactly. (This causes test image files to change.) Make ordered dither use 16x16 instead of 4x4 pattern for a small quality improvement. New configure script based on latest GNU Autoconf. Fix configure script to handle CFLAGS correctly. Rename *.auto files to *.cfg, so that configure script still works if file names have been truncated for DOS. Fix bug in rdbmp.c: didn't allow for extra data between header and image. Modify rdppm.c/wrppm.c to handle 2-byte raw PPM/PGM formats for 12-bit data. Fix several bugs in rdrle.c. NEED_SHORT_EXTERNAL_NAMES option was broken. Revise jerror.h/jerror.c for more flexibility in message table. Repair oversight in jmemname.c NO_MKTEMP case: file could be there but unreadable. Version 5 24-Sep-94 -------------------- Version 5 represents a nearly complete redesign and rewrite of the IJG software. Major user-visible changes include: * Automatic configuration simplifies installation for most Unix systems. * A range of speed vs. image quality tradeoffs are supported. This includes resizing of an image during decompression: scaling down by a factor of 1/2, 1/4, or 1/8 is handled very efficiently. * New programs rdjpgcom and wrjpgcom allow insertion and extraction of text comments in a JPEG file. The application programmer's interface to the library has changed completely. Notable improvements include: * We have eliminated the use of callback routines for handling the uncompressed image data. The application now sees the library as a set of routines that it calls to read or write image data on a scanline-by-scanline basis. * The application image data is represented in a conventional interleaved- pixel format, rather than as a separate array for each color channel. This can save a copying step in many programs. * The handling of compressed data has been cleaned up: the application can supply routines to source or sink the compressed data. It is possible to suspend processing on source/sink buffer overrun, although this is not supported in all operating modes. * All static state has been eliminated from the library, so that multiple instances of compression or decompression can be active concurrently. * JPEG abbreviated datastream formats are supported, ie, quantization and Huffman tables can be stored separately from the image data. * And not only that, but the documentation of the library has improved considerably! The last widely used release before the version 5 rewrite was version 4A of 18-Feb-93. Change logs before that point have been discarded, since they are not of much interest after the rewrite. jpeg-8d1/jddctmgr.c0000644000175000017500000003016211337727114012775 0ustar billbill/* * jddctmgr.c * * Copyright (C) 1994-1996, Thomas G. Lane. * Modified 2002-2010 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains the inverse-DCT management logic. * This code selects a particular IDCT implementation to be used, * and it performs related housekeeping chores. No code in this file * is executed per IDCT step, only during output pass setup. * * Note that the IDCT routines are responsible for performing coefficient * dequantization as well as the IDCT proper. This module sets up the * dequantization multiplier table needed by the IDCT routine. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ /* * The decompressor input side (jdinput.c) saves away the appropriate * quantization table for each component at the start of the first scan * involving that component. (This is necessary in order to correctly * decode files that reuse Q-table slots.) * When we are ready to make an output pass, the saved Q-table is converted * to a multiplier table that will actually be used by the IDCT routine. * The multiplier table contents are IDCT-method-dependent. To support * application changes in IDCT method between scans, we can remake the * multiplier tables if necessary. * In buffered-image mode, the first output pass may occur before any data * has been seen for some components, and thus before their Q-tables have * been saved away. To handle this case, multiplier tables are preset * to zeroes; the result of the IDCT will be a neutral gray level. */ /* Private subobject for this module */ typedef struct { struct jpeg_inverse_dct pub; /* public fields */ /* This array contains the IDCT method code that each multiplier table * is currently set up for, or -1 if it's not yet set up. * The actual multiplier tables are pointed to by dct_table in the * per-component comp_info structures. */ int cur_method[MAX_COMPONENTS]; } my_idct_controller; typedef my_idct_controller * my_idct_ptr; /* Allocated multiplier tables: big enough for any supported variant */ typedef union { ISLOW_MULT_TYPE islow_array[DCTSIZE2]; #ifdef DCT_IFAST_SUPPORTED IFAST_MULT_TYPE ifast_array[DCTSIZE2]; #endif #ifdef DCT_FLOAT_SUPPORTED FLOAT_MULT_TYPE float_array[DCTSIZE2]; #endif } multiplier_table; /* The current scaled-IDCT routines require ISLOW-style multiplier tables, * so be sure to compile that code if either ISLOW or SCALING is requested. */ #ifdef DCT_ISLOW_SUPPORTED #define PROVIDE_ISLOW_TABLES #else #ifdef IDCT_SCALING_SUPPORTED #define PROVIDE_ISLOW_TABLES #endif #endif /* * Prepare for an output pass. * Here we select the proper IDCT routine for each component and build * a matching multiplier table. */ METHODDEF(void) start_pass (j_decompress_ptr cinfo) { my_idct_ptr idct = (my_idct_ptr) cinfo->idct; int ci, i; jpeg_component_info *compptr; int method = 0; inverse_DCT_method_ptr method_ptr = NULL; JQUANT_TBL * qtbl; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Select the proper IDCT routine for this component's scaling */ switch ((compptr->DCT_h_scaled_size << 8) + compptr->DCT_v_scaled_size) { #ifdef IDCT_SCALING_SUPPORTED case ((1 << 8) + 1): method_ptr = jpeg_idct_1x1; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((2 << 8) + 2): method_ptr = jpeg_idct_2x2; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((3 << 8) + 3): method_ptr = jpeg_idct_3x3; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((4 << 8) + 4): method_ptr = jpeg_idct_4x4; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((5 << 8) + 5): method_ptr = jpeg_idct_5x5; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((6 << 8) + 6): method_ptr = jpeg_idct_6x6; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((7 << 8) + 7): method_ptr = jpeg_idct_7x7; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((9 << 8) + 9): method_ptr = jpeg_idct_9x9; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((10 << 8) + 10): method_ptr = jpeg_idct_10x10; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((11 << 8) + 11): method_ptr = jpeg_idct_11x11; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((12 << 8) + 12): method_ptr = jpeg_idct_12x12; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((13 << 8) + 13): method_ptr = jpeg_idct_13x13; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((14 << 8) + 14): method_ptr = jpeg_idct_14x14; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((15 << 8) + 15): method_ptr = jpeg_idct_15x15; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((16 << 8) + 16): method_ptr = jpeg_idct_16x16; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((16 << 8) + 8): method_ptr = jpeg_idct_16x8; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((14 << 8) + 7): method_ptr = jpeg_idct_14x7; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((12 << 8) + 6): method_ptr = jpeg_idct_12x6; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((10 << 8) + 5): method_ptr = jpeg_idct_10x5; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((8 << 8) + 4): method_ptr = jpeg_idct_8x4; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((6 << 8) + 3): method_ptr = jpeg_idct_6x3; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((4 << 8) + 2): method_ptr = jpeg_idct_4x2; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((2 << 8) + 1): method_ptr = jpeg_idct_2x1; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((8 << 8) + 16): method_ptr = jpeg_idct_8x16; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((7 << 8) + 14): method_ptr = jpeg_idct_7x14; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((6 << 8) + 12): method_ptr = jpeg_idct_6x12; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((5 << 8) + 10): method_ptr = jpeg_idct_5x10; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((4 << 8) + 8): method_ptr = jpeg_idct_4x8; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((3 << 8) + 6): method_ptr = jpeg_idct_3x6; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((2 << 8) + 4): method_ptr = jpeg_idct_2x4; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; case ((1 << 8) + 2): method_ptr = jpeg_idct_1x2; method = JDCT_ISLOW; /* jidctint uses islow-style table */ break; #endif case ((DCTSIZE << 8) + DCTSIZE): switch (cinfo->dct_method) { #ifdef DCT_ISLOW_SUPPORTED case JDCT_ISLOW: method_ptr = jpeg_idct_islow; method = JDCT_ISLOW; break; #endif #ifdef DCT_IFAST_SUPPORTED case JDCT_IFAST: method_ptr = jpeg_idct_ifast; method = JDCT_IFAST; break; #endif #ifdef DCT_FLOAT_SUPPORTED case JDCT_FLOAT: method_ptr = jpeg_idct_float; method = JDCT_FLOAT; break; #endif default: ERREXIT(cinfo, JERR_NOT_COMPILED); break; } break; default: ERREXIT2(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_h_scaled_size, compptr->DCT_v_scaled_size); break; } idct->pub.inverse_DCT[ci] = method_ptr; /* Create multiplier table from quant table. * However, we can skip this if the component is uninteresting * or if we already built the table. Also, if no quant table * has yet been saved for the component, we leave the * multiplier table all-zero; we'll be reading zeroes from the * coefficient controller's buffer anyway. */ if (! compptr->component_needed || idct->cur_method[ci] == method) continue; qtbl = compptr->quant_table; if (qtbl == NULL) /* happens if no data yet for component */ continue; idct->cur_method[ci] = method; switch (method) { #ifdef PROVIDE_ISLOW_TABLES case JDCT_ISLOW: { /* For LL&M IDCT method, multipliers are equal to raw quantization * coefficients, but are stored as ints to ensure access efficiency. */ ISLOW_MULT_TYPE * ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table; for (i = 0; i < DCTSIZE2; i++) { ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[i]; } } break; #endif #ifdef DCT_IFAST_SUPPORTED case JDCT_IFAST: { /* For AA&N IDCT method, multipliers are equal to quantization * coefficients scaled by scalefactor[row]*scalefactor[col], where * scalefactor[0] = 1 * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 * For integer operation, the multiplier table is to be scaled by * IFAST_SCALE_BITS. */ IFAST_MULT_TYPE * ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table; #define CONST_BITS 14 static const INT16 aanscales[DCTSIZE2] = { /* precomputed values scaled up by 14 bits */ 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446, 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247 }; SHIFT_TEMPS for (i = 0; i < DCTSIZE2; i++) { ifmtbl[i] = (IFAST_MULT_TYPE) DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i], (INT32) aanscales[i]), CONST_BITS-IFAST_SCALE_BITS); } } break; #endif #ifdef DCT_FLOAT_SUPPORTED case JDCT_FLOAT: { /* For float AA&N IDCT method, multipliers are equal to quantization * coefficients scaled by scalefactor[row]*scalefactor[col], where * scalefactor[0] = 1 * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 * We apply a further scale factor of 1/8. */ FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table; int row, col; static const double aanscalefactor[DCTSIZE] = { 1.0, 1.387039845, 1.306562965, 1.175875602, 1.0, 0.785694958, 0.541196100, 0.275899379 }; i = 0; for (row = 0; row < DCTSIZE; row++) { for (col = 0; col < DCTSIZE; col++) { fmtbl[i] = (FLOAT_MULT_TYPE) ((double) qtbl->quantval[i] * aanscalefactor[row] * aanscalefactor[col] * 0.125); i++; } } } break; #endif default: ERREXIT(cinfo, JERR_NOT_COMPILED); break; } } } /* * Initialize IDCT manager. */ GLOBAL(void) jinit_inverse_dct (j_decompress_ptr cinfo) { my_idct_ptr idct; int ci; jpeg_component_info *compptr; idct = (my_idct_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_idct_controller)); cinfo->idct = (struct jpeg_inverse_dct *) idct; idct->pub.start_pass = start_pass; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Allocate and pre-zero a multiplier table for each component */ compptr->dct_table = (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(multiplier_table)); MEMZERO(compptr->dct_table, SIZEOF(multiplier_table)); /* Mark multiplier table not yet set up for any method */ idct->cur_method[ci] = -1; } } jpeg-8d1/maktjpeg.st0000644000175000017500000000234411165463644013212 0ustar billbill; Project file for Independent JPEG Group's software ; ; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C. ; Thanks to Frank Moehle, B. Setzepfandt, and Guido Vollbeding. ; ; To use this file, rename it to jpegtran.prj. ; If you are using Turbo C, change filenames beginning with "pc..." to "tc..." ; Read installation instructions before trying to make the program! ; ; ; * * * Output file * * * jpegtran.ttp ; ; * * * COMPILER OPTIONS * * * .C[-P] ; absolute calls .C[-M] ; and no string merging, folks .C[-w-cln] ; no "constant is long" warnings .C[-w-par] ; no "parameter xxxx unused" .C[-w-rch] ; no "unreachable code" .C[-wsig] ; warn if significant digits may be lost = ; * * * * List of modules * * * * pcstart.o jpegtran.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,transupp.h,jversion.h) cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdswitch.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) transupp.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,transupp.h) libjpeg.lib ; built by libjpeg.prj pcstdlib.lib ; standard library pcextlib.lib ; extended library jpeg-8d1/makeddsp.vc60000644000175000017500000000642511174123762013246 0ustar billbill# Microsoft Developer Studio Project File - Name="djpeg" - Package Owner=<4> # Microsoft Developer Studio Generated Build File, Format Version 6.00 # ** NICHT BEARBEITEN ** # TARGTYPE "Win32 (x86) Console Application" 0x0103 CFG=djpeg - Win32 !MESSAGE Dies ist kein gltiges Makefile. Zum Erstellen dieses Projekts mit NMAKE !MESSAGE verwenden Sie den Befehl "Makefile exportieren" und fhren Sie den Befehl !MESSAGE !MESSAGE NMAKE /f "djpeg.mak". !MESSAGE !MESSAGE Sie knnen beim Ausfhren von NMAKE eine Konfiguration angeben !MESSAGE durch Definieren des Makros CFG in der Befehlszeile. Zum Beispiel: !MESSAGE !MESSAGE NMAKE /f "djpeg.mak" CFG="djpeg - Win32" !MESSAGE !MESSAGE Fr die Konfiguration stehen zur Auswahl: !MESSAGE !MESSAGE "djpeg - Win32" (basierend auf "Win32 (x86) Console Application") !MESSAGE # Begin Project # PROP AllowPerConfigDependencies 0 # PROP Scc_ProjName "" # PROP Scc_LocalPath "" CPP=cl.exe RSC=rc.exe # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 0 # PROP BASE Output_Dir ".\djpeg\Release" # PROP BASE Intermediate_Dir ".\djpeg\Release" # PROP BASE Target_Dir ".\djpeg" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 0 # PROP Output_Dir ".\djpeg\Release" # PROP Intermediate_Dir ".\djpeg\Release" # PROP Ignore_Export_Lib 0 # PROP Target_Dir ".\djpeg" # ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /c # ADD CPP /nologo /G6 /MT /W3 /GX /Ox /Oa /Ob2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /YX /FD /c # ADD BASE RSC /l 0x409 /d "NDEBUG" # ADD RSC /l 0x409 /d "NDEBUG" BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LINK32=link.exe # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # ADD LINK32 Release\jpeg.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # Begin Target # Name "djpeg - Win32" # Begin Group "Quellcodedateien" # PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat;for;f90" # Begin Source File SOURCE=.\cdjpeg.c # End Source File # Begin Source File SOURCE=.\djpeg.c # End Source File # Begin Source File SOURCE=.\rdcolmap.c # End Source File # Begin Source File SOURCE=.\wrbmp.c # End Source File # Begin Source File SOURCE=.\wrgif.c # End Source File # Begin Source File SOURCE=.\wrppm.c # End Source File # Begin Source File SOURCE=.\wrrle.c # End Source File # Begin Source File SOURCE=.\wrtarga.c # End Source File # End Group # Begin Group "Header-Dateien" # PROP Default_Filter "h;hpp;hxx;hm;inl;fi;fd" # Begin Source File SOURCE=.\cderror.h # End Source File # Begin Source File SOURCE=.\cdjpeg.h # End Source File # Begin Source File SOURCE=.\jconfig.h # End Source File # Begin Source File SOURCE=.\jerror.h # End Source File # Begin Source File SOURCE=.\jinclude.h # End Source File # Begin Source File SOURCE=.\jmorecfg.h # End Source File # Begin Source File SOURCE=.\jpeglib.h # End Source File # Begin Source File SOURCE=.\jversion.h # End Source File # End Group # Begin Group "Ressourcendateien" # PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;cnt;rtf;gif;jpg;jpeg;jpe" # End Group # End Target # End Project jpeg-8d1/jconfig.txt0000644000175000017500000001300511366277517013221 0ustar billbill/* * jconfig.txt * * Copyright (C) 1991-1994, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file documents the configuration options that are required to * customize the JPEG software for a particular system. * * The actual configuration options for a particular installation are stored * in jconfig.h. On many machines, jconfig.h can be generated automatically * or copied from one of the "canned" jconfig files that we supply. But if * you need to generate a jconfig.h file by hand, this file tells you how. * * DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING. * EDIT A COPY NAMED JCONFIG.H. */ /* * These symbols indicate the properties of your machine or compiler. * #define the symbol if yes, #undef it if no. */ /* Does your compiler support function prototypes? * (If not, you also need to use ansi2knr, see install.txt) */ #define HAVE_PROTOTYPES /* Does your compiler support the declaration "unsigned char" ? * How about "unsigned short" ? */ #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* Define "void" as "char" if your compiler doesn't know about type void. * NOTE: be sure to define void such that "void *" represents the most general * pointer type, e.g., that returned by malloc(). */ /* #define void char */ /* Define "const" as empty if your compiler doesn't know the "const" keyword. */ /* #define const */ /* Define this if an ordinary "char" type is unsigned. * If you're not sure, leaving it undefined will work at some cost in speed. * If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal. */ #undef CHAR_IS_UNSIGNED /* Define this if your system has an ANSI-conforming file. */ #define HAVE_STDDEF_H /* Define this if your system has an ANSI-conforming file. */ #define HAVE_STDLIB_H /* Define this if your system does not have an ANSI/SysV , * but does have a BSD-style . */ #undef NEED_BSD_STRINGS /* Define this if your system does not provide typedef size_t in any of the * ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in * instead. */ #undef NEED_SYS_TYPES_H /* For 80x86 machines, you need to define NEED_FAR_POINTERS, * unless you are using a large-data memory model or 80386 flat-memory mode. * On less brain-damaged CPUs this symbol must not be defined. * (Defining this symbol causes large data structures to be referenced through * "far" pointers and to be allocated with a special version of malloc.) */ #undef NEED_FAR_POINTERS /* Define this if your linker needs global names to be unique in less * than the first 15 characters. */ #undef NEED_SHORT_EXTERNAL_NAMES /* Although a real ANSI C compiler can deal perfectly well with pointers to * unspecified structures (see "incomplete types" in the spec), a few pre-ANSI * and pseudo-ANSI compilers get confused. To keep one of these bozos happy, * define INCOMPLETE_TYPES_BROKEN. This is not recommended unless you * actually get "missing structure definition" warnings or errors while * compiling the JPEG code. */ #undef INCOMPLETE_TYPES_BROKEN /* Define "boolean" as unsigned char, not int, on Windows systems. */ #ifdef _WIN32 #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ typedef unsigned char boolean; #endif #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ #endif /* * The following options affect code selection within the JPEG library, * but they don't need to be visible to applications using the library. * To minimize application namespace pollution, the symbols won't be * defined unless JPEG_INTERNALS has been defined. */ #ifdef JPEG_INTERNALS /* Define this if your compiler implements ">>" on signed values as a logical * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift, * which is the normal and rational definition. */ #undef RIGHT_SHIFT_IS_UNSIGNED #endif /* JPEG_INTERNALS */ /* * The remaining options do not affect the JPEG library proper, * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c). * Other applications can ignore these. */ #ifdef JPEG_CJPEG_DJPEG /* These defines indicate which image (non-JPEG) file formats are allowed. */ #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ /* Define this if you want to name both input and output files on the command * line, rather than using stdout and optionally stdin. You MUST do this if * your system can't cope with binary I/O to stdin/stdout. See comments at * head of cjpeg.c or djpeg.c. */ #undef TWO_FILE_COMMANDLINE /* Define this if your system needs explicit cleanup of temporary files. * This is crucial under MS-DOS, where the temporary "files" may be areas * of extended memory; on most other systems it's not as important. */ #undef NEED_SIGNAL_CATCHER /* By default, we open image files with fopen(...,"rb") or fopen(...,"wb"). * This is necessary on systems that distinguish text files from binary files, * and is harmless on most systems that don't. If you have one of the rare * systems that complains about the "b" spec, define this symbol. */ #undef DONT_USE_B_MODE /* Define this if you want percent-done progress reports from cjpeg/djpeg. */ #undef PROGRESS_REPORT #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/jccolor.c0000644000175000017500000003642211630351410012623 0ustar billbill/* * jccolor.c * * Copyright (C) 1991-1996, Thomas G. Lane. * Modified 2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains input colorspace conversion routines. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Private subobject */ typedef struct { struct jpeg_color_converter pub; /* public fields */ /* Private state for RGB->YCC conversion */ INT32 * rgb_ycc_tab; /* => table for RGB to YCbCr conversion */ } my_color_converter; typedef my_color_converter * my_cconvert_ptr; /**************** RGB -> YCbCr conversion: most common case **************/ /* * YCbCr is defined per CCIR 601-1, except that Cb and Cr are * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. * The conversion equations to be implemented are therefore * Y = 0.29900 * R + 0.58700 * G + 0.11400 * B * Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE * Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) * Note: older versions of the IJG code used a zero offset of MAXJSAMPLE/2, * rather than CENTERJSAMPLE, for Cb and Cr. This gave equal positive and * negative swings for Cb/Cr, but meant that grayscale values (Cb=Cr=0) * were not represented exactly. Now we sacrifice exact representation of * maximum red and maximum blue in order to get exact grayscales. * * To avoid floating-point arithmetic, we represent the fractional constants * as integers scaled up by 2^16 (about 4 digits precision); we have to divide * the products by 2^16, with appropriate rounding, to get the correct answer. * * For even more speed, we avoid doing any multiplications in the inner loop * by precalculating the constants times R,G,B for all possible values. * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); * for 12-bit samples it is still acceptable. It's not very reasonable for * 16-bit samples, but if you want lossless storage you shouldn't be changing * colorspace anyway. * The CENTERJSAMPLE offsets and the rounding fudge-factor of 0.5 are included * in the tables to save adding them separately in the inner loop. */ #define SCALEBITS 16 /* speediest right-shift on some machines */ #define CBCR_OFFSET ((INT32) CENTERJSAMPLE << SCALEBITS) #define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) #define FIX(x) ((INT32) ((x) * (1L< Y section */ #define G_Y_OFF (1*(MAXJSAMPLE+1)) /* offset to G => Y section */ #define B_Y_OFF (2*(MAXJSAMPLE+1)) /* etc. */ #define R_CB_OFF (3*(MAXJSAMPLE+1)) #define G_CB_OFF (4*(MAXJSAMPLE+1)) #define B_CB_OFF (5*(MAXJSAMPLE+1)) #define R_CR_OFF B_CB_OFF /* B=>Cb, R=>Cr are the same */ #define G_CR_OFF (6*(MAXJSAMPLE+1)) #define B_CR_OFF (7*(MAXJSAMPLE+1)) #define TABLE_SIZE (8*(MAXJSAMPLE+1)) /* * Initialize for RGB->YCC colorspace conversion. */ METHODDEF(void) rgb_ycc_start (j_compress_ptr cinfo) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; INT32 * rgb_ycc_tab; INT32 i; /* Allocate and fill in the conversion tables. */ cconvert->rgb_ycc_tab = rgb_ycc_tab = (INT32 *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (TABLE_SIZE * SIZEOF(INT32))); for (i = 0; i <= MAXJSAMPLE; i++) { rgb_ycc_tab[i+R_Y_OFF] = FIX(0.29900) * i; rgb_ycc_tab[i+G_Y_OFF] = FIX(0.58700) * i; rgb_ycc_tab[i+B_Y_OFF] = FIX(0.11400) * i + ONE_HALF; rgb_ycc_tab[i+R_CB_OFF] = (-FIX(0.16874)) * i; rgb_ycc_tab[i+G_CB_OFF] = (-FIX(0.33126)) * i; /* We use a rounding fudge-factor of 0.5-epsilon for Cb and Cr. * This ensures that the maximum output will round to MAXJSAMPLE * not MAXJSAMPLE+1, and thus that we don't have to range-limit. */ rgb_ycc_tab[i+B_CB_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1; /* B=>Cb and R=>Cr tables are the same rgb_ycc_tab[i+R_CR_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1; */ rgb_ycc_tab[i+G_CR_OFF] = (-FIX(0.41869)) * i; rgb_ycc_tab[i+B_CR_OFF] = (-FIX(0.08131)) * i; } } /* * Convert some rows of samples to the JPEG colorspace. * * Note that we change from the application's interleaved-pixel format * to our internal noninterleaved, one-plane-per-component format. * The input buffer is therefore three times as wide as the output buffer. * * A starting row offset is provided only for the output buffer. The caller * can easily adjust the passed input_buf value to accommodate any row * offset required on that side. */ METHODDEF(void) rgb_ycc_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; register int r, g, b; register INT32 * ctab = cconvert->rgb_ycc_tab; register JSAMPROW inptr; register JSAMPROW outptr0, outptr1, outptr2; register JDIMENSION col; JDIMENSION num_cols = cinfo->image_width; while (--num_rows >= 0) { inptr = *input_buf++; outptr0 = output_buf[0][output_row]; outptr1 = output_buf[1][output_row]; outptr2 = output_buf[2][output_row]; output_row++; for (col = 0; col < num_cols; col++) { r = GETJSAMPLE(inptr[RGB_RED]); g = GETJSAMPLE(inptr[RGB_GREEN]); b = GETJSAMPLE(inptr[RGB_BLUE]); inptr += RGB_PIXELSIZE; /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations * must be too; we do not need an explicit range-limiting operation. * Hence the value being shifted is never negative, and we don't * need the general RIGHT_SHIFT macro. */ /* Y */ outptr0[col] = (JSAMPLE) ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) >> SCALEBITS); /* Cb */ outptr1[col] = (JSAMPLE) ((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF]) >> SCALEBITS); /* Cr */ outptr2[col] = (JSAMPLE) ((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF]) >> SCALEBITS); } } } /**************** Cases other than RGB -> YCbCr **************/ /* * Convert some rows of samples to the JPEG colorspace. * This version handles RGB->grayscale conversion, which is the same * as the RGB->Y portion of RGB->YCbCr. * We assume rgb_ycc_start has been called (we only use the Y tables). */ METHODDEF(void) rgb_gray_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; register int r, g, b; register INT32 * ctab = cconvert->rgb_ycc_tab; register JSAMPROW inptr; register JSAMPROW outptr; register JDIMENSION col; JDIMENSION num_cols = cinfo->image_width; while (--num_rows >= 0) { inptr = *input_buf++; outptr = output_buf[0][output_row]; output_row++; for (col = 0; col < num_cols; col++) { r = GETJSAMPLE(inptr[RGB_RED]); g = GETJSAMPLE(inptr[RGB_GREEN]); b = GETJSAMPLE(inptr[RGB_BLUE]); inptr += RGB_PIXELSIZE; /* Y */ outptr[col] = (JSAMPLE) ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) >> SCALEBITS); } } } /* * Convert some rows of samples to the JPEG colorspace. * This version handles Adobe-style CMYK->YCCK conversion, * where we convert R=1-C, G=1-M, and B=1-Y to YCbCr using the same * conversion as above, while passing K (black) unchanged. * We assume rgb_ycc_start has been called. */ METHODDEF(void) cmyk_ycck_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; register int r, g, b; register INT32 * ctab = cconvert->rgb_ycc_tab; register JSAMPROW inptr; register JSAMPROW outptr0, outptr1, outptr2, outptr3; register JDIMENSION col; JDIMENSION num_cols = cinfo->image_width; while (--num_rows >= 0) { inptr = *input_buf++; outptr0 = output_buf[0][output_row]; outptr1 = output_buf[1][output_row]; outptr2 = output_buf[2][output_row]; outptr3 = output_buf[3][output_row]; output_row++; for (col = 0; col < num_cols; col++) { r = MAXJSAMPLE - GETJSAMPLE(inptr[0]); g = MAXJSAMPLE - GETJSAMPLE(inptr[1]); b = MAXJSAMPLE - GETJSAMPLE(inptr[2]); /* K passes through as-is */ outptr3[col] = inptr[3]; /* don't need GETJSAMPLE here */ inptr += 4; /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations * must be too; we do not need an explicit range-limiting operation. * Hence the value being shifted is never negative, and we don't * need the general RIGHT_SHIFT macro. */ /* Y */ outptr0[col] = (JSAMPLE) ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) >> SCALEBITS); /* Cb */ outptr1[col] = (JSAMPLE) ((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF]) >> SCALEBITS); /* Cr */ outptr2[col] = (JSAMPLE) ((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF]) >> SCALEBITS); } } } /* * Convert some rows of samples to the JPEG colorspace. * This version handles grayscale output with no conversion. * The source can be either plain grayscale or YCbCr (since Y == gray). */ METHODDEF(void) grayscale_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { register JSAMPROW inptr; register JSAMPROW outptr; register JDIMENSION col; JDIMENSION num_cols = cinfo->image_width; int instride = cinfo->input_components; while (--num_rows >= 0) { inptr = *input_buf++; outptr = output_buf[0][output_row]; output_row++; for (col = 0; col < num_cols; col++) { outptr[col] = inptr[0]; /* don't need GETJSAMPLE() here */ inptr += instride; } } } /* * Convert some rows of samples to the JPEG colorspace. * No colorspace conversion, but change from interleaved * to separate-planes representation. */ METHODDEF(void) rgb_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { register JSAMPROW inptr; register JSAMPROW outptr0, outptr1, outptr2; register JDIMENSION col; JDIMENSION num_cols = cinfo->image_width; while (--num_rows >= 0) { inptr = *input_buf++; outptr0 = output_buf[0][output_row]; outptr1 = output_buf[1][output_row]; outptr2 = output_buf[2][output_row]; output_row++; for (col = 0; col < num_cols; col++) { /* We can dispense with GETJSAMPLE() here */ outptr0[col] = inptr[RGB_RED]; outptr1[col] = inptr[RGB_GREEN]; outptr2[col] = inptr[RGB_BLUE]; inptr += RGB_PIXELSIZE; } } } /* * Convert some rows of samples to the JPEG colorspace. * This version handles multi-component colorspaces without conversion. * We assume input_components == num_components. */ METHODDEF(void) null_convert (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows) { register JSAMPROW inptr; register JSAMPROW outptr; register JDIMENSION col; register int ci; int nc = cinfo->num_components; JDIMENSION num_cols = cinfo->image_width; while (--num_rows >= 0) { /* It seems fastest to make a separate pass for each component. */ for (ci = 0; ci < nc; ci++) { inptr = *input_buf; outptr = output_buf[ci][output_row]; for (col = 0; col < num_cols; col++) { outptr[col] = inptr[ci]; /* don't need GETJSAMPLE() here */ inptr += nc; } } input_buf++; output_row++; } } /* * Empty method for start_pass. */ METHODDEF(void) null_method (j_compress_ptr cinfo) { /* no work needed */ } /* * Module initialization routine for input colorspace conversion. */ GLOBAL(void) jinit_color_converter (j_compress_ptr cinfo) { my_cconvert_ptr cconvert; cconvert = (my_cconvert_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_color_converter)); cinfo->cconvert = (struct jpeg_color_converter *) cconvert; /* set start_pass to null method until we find out differently */ cconvert->pub.start_pass = null_method; /* Make sure input_components agrees with in_color_space */ switch (cinfo->in_color_space) { case JCS_GRAYSCALE: if (cinfo->input_components != 1) ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); break; case JCS_RGB: if (cinfo->input_components != RGB_PIXELSIZE) ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); break; case JCS_YCbCr: if (cinfo->input_components != 3) ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); break; case JCS_CMYK: case JCS_YCCK: if (cinfo->input_components != 4) ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); break; default: /* JCS_UNKNOWN can be anything */ if (cinfo->input_components < 1) ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); break; } /* Check num_components, set conversion method based on requested space */ switch (cinfo->jpeg_color_space) { case JCS_GRAYSCALE: if (cinfo->num_components != 1) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); if (cinfo->in_color_space == JCS_GRAYSCALE || cinfo->in_color_space == JCS_YCbCr) cconvert->pub.color_convert = grayscale_convert; else if (cinfo->in_color_space == JCS_RGB) { cconvert->pub.start_pass = rgb_ycc_start; cconvert->pub.color_convert = rgb_gray_convert; } else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; case JCS_RGB: if (cinfo->num_components != 3) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); if (cinfo->in_color_space == JCS_RGB) cconvert->pub.color_convert = rgb_convert; else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; case JCS_YCbCr: if (cinfo->num_components != 3) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); if (cinfo->in_color_space == JCS_RGB) { cconvert->pub.start_pass = rgb_ycc_start; cconvert->pub.color_convert = rgb_ycc_convert; } else if (cinfo->in_color_space == JCS_YCbCr) cconvert->pub.color_convert = null_convert; else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; case JCS_CMYK: if (cinfo->num_components != 4) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); if (cinfo->in_color_space == JCS_CMYK) cconvert->pub.color_convert = null_convert; else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; case JCS_YCCK: if (cinfo->num_components != 4) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); if (cinfo->in_color_space == JCS_CMYK) { cconvert->pub.start_pass = rgb_ycc_start; cconvert->pub.color_convert = cmyk_ycck_convert; } else if (cinfo->in_color_space == JCS_YCCK) cconvert->pub.color_convert = null_convert; else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; default: /* allow null conversion of JCS_UNKNOWN */ if (cinfo->jpeg_color_space != cinfo->in_color_space || cinfo->num_components != cinfo->input_components) ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); cconvert->pub.color_convert = null_convert; break; } } jpeg-8d1/cjpeg.10000644000175000017500000003012211626446350012202 0ustar billbill.TH CJPEG 1 "28 August 2011" .SH NAME cjpeg \- compress an image file to a JPEG file .SH SYNOPSIS .B cjpeg [ .I options ] [ .I filename ] .LP .SH DESCRIPTION .LP .B cjpeg compresses the named image file, or the standard input if no file is named, and produces a JPEG/JFIF file on the standard output. The currently supported input file formats are: PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster Toolkit format). (RLE is supported only if the URT library is available.) .SH OPTIONS All switch names may be abbreviated; for example, .B \-grayscale may be written .B \-gray or .BR \-gr . Most of the "basic" switches can be abbreviated to as little as one letter. Upper and lower case are equivalent (thus .B \-BMP is the same as .BR \-bmp ). British spellings are also accepted (e.g., .BR \-greyscale ), though for brevity these are not mentioned below. .PP The basic switches are: .TP .BI \-quality " N[,...]" Scale quantization tables to adjust image quality. Quality is 0 (worst) to 100 (best); default is 75. (See below for more info.) .TP .B \-grayscale Create monochrome JPEG file from color input. Be sure to use this switch when compressing a grayscale BMP file, because .B cjpeg isn't bright enough to notice whether a BMP file uses only shades of gray. By saying .BR \-grayscale , you'll get a smaller JPEG file that takes less time to process. .TP .B \-rgb Create RGB JPEG file. Using this switch suppresses the conversion from RGB colorspace input to the default YCbCr JPEG colorspace. Use this switch in combination with the .BI \-block " N" switch (see below) for lossless JPEG coding. .TP .B \-optimize Perform optimization of entropy encoding parameters. Without this, default encoding parameters are used. .B \-optimize usually makes the JPEG file a little smaller, but .B cjpeg runs somewhat slower and needs much more memory. Image quality and speed of decompression are unaffected by .BR \-optimize . .TP .B \-progressive Create progressive JPEG file (see below). .TP .BI \-scale " M/N" Scale the output image by a factor M/N. Currently supported scale factors are M/N with all N from 1 to 16, where M is the destination DCT size, which is 8 by default (see .BI \-block " N" switch below). .TP .B \-targa Input file is Targa format. Targa files that contain an "identification" field will not be automatically recognized by .BR cjpeg ; for such files you must specify .B \-targa to make .B cjpeg treat the input as Targa format. For most Targa files, you won't need this switch. .PP The .B \-quality switch lets you trade off compressed file size against quality of the reconstructed image: the higher the quality setting, the larger the JPEG file, and the closer the output image will be to the original input. Normally you want to use the lowest quality setting (smallest file) that decompresses into something visually indistinguishable from the original image. For this purpose the quality setting should be between 50 and 95; the default of 75 is often about right. If you see defects at .B \-quality 75, then go up 5 or 10 counts at a time until you are happy with the output image. (The optimal setting will vary from one image to another.) .PP .B \-quality 100 will generate a quantization table of all 1's, minimizing loss in the quantization step (but there is still information loss in subsampling, as well as roundoff error). This setting is mainly of interest for experimental purposes. Quality values above about 95 are .B not recommended for normal use; the compressed file size goes up dramatically for hardly any gain in output image quality. .PP In the other direction, quality values below 50 will produce very small files of low image quality. Settings around 5 to 10 might be useful in preparing an index of a large image library, for example. Try .B \-quality 2 (or so) for some amusing Cubist effects. (Note: quality values below about 25 generate 2-byte quantization tables, which are considered optional in the JPEG standard. .B cjpeg emits a warning message when you give such a quality value, because some other JPEG programs may be unable to decode the resulting file. Use .B \-baseline if you need to ensure compatibility at low quality values.) .PP The .B \-quality option has been extended in IJG version 7 for support of separate quality settings for luminance and chrominance (or in general, for every provided quantization table slot). This feature is useful for high-quality applications which cannot accept the damage of color data by coarse subsampling settings. You can now easily reduce the color data amount more smoothly with finer control without separate subsampling. The resulting file is fully compliant with standard JPEG decoders. Note that the .B \-quality ratings refer to the quantization table slots, and that the last value is replicated if there are more q-table slots than parameters. The default q-table slots are 0 for luminance and 1 for chrominance with default tables as given in the JPEG standard. This is compatible with the old behaviour in case that only one parameter is given, which is then used for both luminance and chrominance (slots 0 and 1). More or custom quantization tables can be set with .B \-qtables and assigned to components with .B \-qslots parameter (see the "wizard" switches below). .B Caution: You must explicitly add .BI \-sample " 1x1" for efficient separate color quality selection, since the default value used by library is 2x2! .PP The .B \-progressive switch creates a "progressive JPEG" file. In this type of JPEG file, the data is stored in multiple scans of increasing quality. If the file is being transmitted over a slow communications link, the decoder can use the first scan to display a low-quality image very quickly, and can then improve the display with each subsequent scan. The final image is exactly equivalent to a standard JPEG file of the same quality setting, and the total file size is about the same --- often a little smaller. .PP Switches for advanced users: .TP .B \-arithmetic Use arithmetic coding. .B Caution: arithmetic coded JPEG is not yet widely implemented, so many decoders will be unable to view an arithmetic coded JPEG file at all. .TP .BI \-block " N" Set DCT block size. All N from 1 to 16 are possible. Default is 8 (baseline format). Larger values produce higher compression, smaller values produce higher quality (exact DCT stage possible with 1 or 2; with the default quality of 75 and default Luminance qtable the DCT+Quantization stage is lossless for N=1). .B Caution: An implementation of the JPEG SmartScale extension is required for this feature. SmartScale enabled JPEG is not yet widely implemented, so many decoders will be unable to view a SmartScale extended JPEG file at all. .TP .B \-dct int Use integer DCT method (default). .TP .B \-dct fast Use fast integer DCT (less accurate). .TP .B \-dct float Use floating-point DCT method. The float method is very slightly more accurate than the int method, but is much slower unless your machine has very fast floating-point hardware. Also note that results of the floating-point method may vary slightly across machines, while the integer methods should give the same results everywhere. The fast integer method is much less accurate than the other two. .TP .B \-nosmooth Don't use high-quality downsampling. .TP .BI \-restart " N" Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is attached to the number. .B \-restart 0 (the default) means no restart markers. .TP .BI \-smooth " N" Smooth the input image to eliminate dithering noise. N, ranging from 1 to 100, indicates the strength of smoothing. 0 (the default) means no smoothing. .TP .BI \-maxmemory " N" Set limit for amount of memory to use in processing large images. Value is in thousands of bytes, or millions of bytes if "M" is attached to the number. For example, .B \-max 4m selects 4000000 bytes. If more space is needed, temporary files will be used. .TP .BI \-outfile " name" Send output image to the named file, not to standard output. .TP .B \-verbose Enable debug printout. More .BR \-v 's give more output. Also, version information is printed at startup. .TP .B \-debug Same as .BR \-verbose . .PP The .B \-restart option inserts extra markers that allow a JPEG decoder to resynchronize after a transmission error. Without restart markers, any damage to a compressed file will usually ruin the image from the point of the error to the end of the image; with restart markers, the damage is usually confined to the portion of the image up to the next restart marker. Of course, the restart markers occupy extra space. We recommend .B \-restart 1 for images that will be transmitted across unreliable networks such as Usenet. .PP The .B \-smooth option filters the input to eliminate fine-scale noise. This is often useful when converting dithered images to JPEG: a moderate smoothing factor of 10 to 50 gets rid of dithering patterns in the input file, resulting in a smaller JPEG file and a better-looking image. Too large a smoothing factor will visibly blur the image, however. .PP Switches for wizards: .TP .B \-baseline Force baseline-compatible quantization tables to be generated. This clamps quantization values to 8 bits even at low quality settings. (This switch is poorly named, since it does not ensure that the output is actually baseline JPEG. For example, you can use .B \-baseline and .B \-progressive together.) .TP .BI \-qtables " file" Use the quantization tables given in the specified text file. .TP .BI \-qslots " N[,...]" Select which quantization table to use for each color component. .TP .BI \-sample " HxV[,...]" Set JPEG sampling factors for each color component. .TP .BI \-scans " file" Use the scan script given in the specified text file. .PP The "wizard" switches are intended for experimentation with JPEG. If you don't know what you are doing, \fBdon't use them\fR. These switches are documented further in the file wizard.txt. .SH EXAMPLES .LP This example compresses the PPM file foo.ppm with a quality factor of 60 and saves the output as foo.jpg: .IP .B cjpeg \-quality .I 60 foo.ppm .B > .I foo.jpg .SH HINTS Color GIF files are not the ideal input for JPEG; JPEG is really intended for compressing full-color (24-bit) images. In particular, don't try to convert cartoons, line drawings, and other images that have only a few distinct colors. GIF works great on these, JPEG does not. If you want to convert a GIF to JPEG, you should experiment with .BR cjpeg 's .B \-quality and .B \-smooth options to get a satisfactory conversion. .B \-smooth 10 or so is often helpful. .PP Avoid running an image through a series of JPEG compression/decompression cycles. Image quality loss will accumulate; after ten or so cycles the image may be noticeably worse than it was after one cycle. It's best to use a lossless format while manipulating an image, then convert to JPEG format when you are ready to file the image away. .PP The .B \-optimize option to .B cjpeg is worth using when you are making a "final" version for posting or archiving. It's also a win when you are using low quality settings to make very small JPEG files; the percentage improvement is often a lot more than it is on larger files. (At present, .B \-optimize mode is always selected when generating progressive JPEG files.) .SH ENVIRONMENT .TP .B JPEGMEM If this environment variable is set, its value is the default memory limit. The value is specified as described for the .B \-maxmemory switch. .B JPEGMEM overrides the default value specified when the program was compiled, and itself is overridden by an explicit .BR \-maxmemory . .SH SEE ALSO .BR djpeg (1), .BR jpegtran (1), .BR rdjpgcom (1), .BR wrjpgcom (1) .br .BR ppm (5), .BR pgm (5) .br Wallace, Gregory K. "The JPEG Still Picture Compression Standard", Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44. .SH AUTHOR Independent JPEG Group .SH BUGS GIF input files are no longer supported, to avoid the Unisys LZW patent. (Conversion of GIF files to JPEG is usually a bad idea anyway.) .PP Not all variants of BMP and Targa file formats are supported. .PP The .B \-targa switch is not a bug, it's a feature. (It would be a bug if the Targa format designers had not been clueless.) jpeg-8d1/jdsample.c0000644000175000017500000002730011126403012012756 0ustar billbill/* * jdsample.c * * Copyright (C) 1991-1996, Thomas G. Lane. * Modified 2002-2008 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains upsampling routines. * * Upsampling input data is counted in "row groups". A row group * is defined to be (v_samp_factor * DCT_v_scaled_size / min_DCT_v_scaled_size) * sample rows of each component. Upsampling will normally produce * max_v_samp_factor pixel rows from each row group (but this could vary * if the upsampler is applying a scale factor of its own). * * An excellent reference for image resampling is * Digital Image Warping, George Wolberg, 1990. * Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Pointer to routine to upsample a single component */ typedef JMETHOD(void, upsample1_ptr, (j_decompress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)); /* Private subobject */ typedef struct { struct jpeg_upsampler pub; /* public fields */ /* Color conversion buffer. When using separate upsampling and color * conversion steps, this buffer holds one upsampled row group until it * has been color converted and output. * Note: we do not allocate any storage for component(s) which are full-size, * ie do not need rescaling. The corresponding entry of color_buf[] is * simply set to point to the input data array, thereby avoiding copying. */ JSAMPARRAY color_buf[MAX_COMPONENTS]; /* Per-component upsampling method pointers */ upsample1_ptr methods[MAX_COMPONENTS]; int next_row_out; /* counts rows emitted from color_buf */ JDIMENSION rows_to_go; /* counts rows remaining in image */ /* Height of an input row group for each component. */ int rowgroup_height[MAX_COMPONENTS]; /* These arrays save pixel expansion factors so that int_expand need not * recompute them each time. They are unused for other upsampling methods. */ UINT8 h_expand[MAX_COMPONENTS]; UINT8 v_expand[MAX_COMPONENTS]; } my_upsampler; typedef my_upsampler * my_upsample_ptr; /* * Initialize for an upsampling pass. */ METHODDEF(void) start_pass_upsample (j_decompress_ptr cinfo) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; /* Mark the conversion buffer empty */ upsample->next_row_out = cinfo->max_v_samp_factor; /* Initialize total-height counter for detecting bottom of image */ upsample->rows_to_go = cinfo->output_height; } /* * Control routine to do upsampling (and color conversion). * * In this version we upsample each component independently. * We upsample one row group into the conversion buffer, then apply * color conversion a row at a time. */ METHODDEF(void) sep_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; int ci; jpeg_component_info * compptr; JDIMENSION num_rows; /* Fill the conversion buffer, if it's empty */ if (upsample->next_row_out >= cinfo->max_v_samp_factor) { for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Invoke per-component upsample method. Notice we pass a POINTER * to color_buf[ci], so that fullsize_upsample can change it. */ (*upsample->methods[ci]) (cinfo, compptr, input_buf[ci] + (*in_row_group_ctr * upsample->rowgroup_height[ci]), upsample->color_buf + ci); } upsample->next_row_out = 0; } /* Color-convert and emit rows */ /* How many we have in the buffer: */ num_rows = (JDIMENSION) (cinfo->max_v_samp_factor - upsample->next_row_out); /* Not more than the distance to the end of the image. Need this test * in case the image height is not a multiple of max_v_samp_factor: */ if (num_rows > upsample->rows_to_go) num_rows = upsample->rows_to_go; /* And not more than what the client can accept: */ out_rows_avail -= *out_row_ctr; if (num_rows > out_rows_avail) num_rows = out_rows_avail; (*cinfo->cconvert->color_convert) (cinfo, upsample->color_buf, (JDIMENSION) upsample->next_row_out, output_buf + *out_row_ctr, (int) num_rows); /* Adjust counts */ *out_row_ctr += num_rows; upsample->rows_to_go -= num_rows; upsample->next_row_out += num_rows; /* When the buffer is emptied, declare this input row group consumed */ if (upsample->next_row_out >= cinfo->max_v_samp_factor) (*in_row_group_ctr)++; } /* * These are the routines invoked by sep_upsample to upsample pixel values * of a single component. One row group is processed per call. */ /* * For full-size components, we just make color_buf[ci] point at the * input buffer, and thus avoid copying any data. Note that this is * safe only because sep_upsample doesn't declare the input row group * "consumed" until we are done color converting and emitting it. */ METHODDEF(void) fullsize_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) { *output_data_ptr = input_data; } /* * This is a no-op version used for "uninteresting" components. * These components will not be referenced by color conversion. */ METHODDEF(void) noop_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) { *output_data_ptr = NULL; /* safety check */ } /* * This version handles any integral sampling ratios. * This is not used for typical JPEG files, so it need not be fast. * Nor, for that matter, is it particularly accurate: the algorithm is * simple replication of the input pixel onto the corresponding output * pixels. The hi-falutin sampling literature refers to this as a * "box filter". A box filter tends to introduce visible artifacts, * so if you are actually going to use 3:1 or 4:1 sampling ratios * you would be well advised to improve this code. */ METHODDEF(void) int_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; JSAMPARRAY output_data = *output_data_ptr; register JSAMPROW inptr, outptr; register JSAMPLE invalue; register int h; JSAMPROW outend; int h_expand, v_expand; int inrow, outrow; h_expand = upsample->h_expand[compptr->component_index]; v_expand = upsample->v_expand[compptr->component_index]; inrow = outrow = 0; while (outrow < cinfo->max_v_samp_factor) { /* Generate one output row with proper horizontal expansion */ inptr = input_data[inrow]; outptr = output_data[outrow]; outend = outptr + cinfo->output_width; while (outptr < outend) { invalue = *inptr++; /* don't need GETJSAMPLE() here */ for (h = h_expand; h > 0; h--) { *outptr++ = invalue; } } /* Generate any additional output rows by duplicating the first one */ if (v_expand > 1) { jcopy_sample_rows(output_data, outrow, output_data, outrow+1, v_expand-1, cinfo->output_width); } inrow++; outrow += v_expand; } } /* * Fast processing for the common case of 2:1 horizontal and 1:1 vertical. * It's still a box filter. */ METHODDEF(void) h2v1_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) { JSAMPARRAY output_data = *output_data_ptr; register JSAMPROW inptr, outptr; register JSAMPLE invalue; JSAMPROW outend; int outrow; for (outrow = 0; outrow < cinfo->max_v_samp_factor; outrow++) { inptr = input_data[outrow]; outptr = output_data[outrow]; outend = outptr + cinfo->output_width; while (outptr < outend) { invalue = *inptr++; /* don't need GETJSAMPLE() here */ *outptr++ = invalue; *outptr++ = invalue; } } } /* * Fast processing for the common case of 2:1 horizontal and 2:1 vertical. * It's still a box filter. */ METHODDEF(void) h2v2_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) { JSAMPARRAY output_data = *output_data_ptr; register JSAMPROW inptr, outptr; register JSAMPLE invalue; JSAMPROW outend; int inrow, outrow; inrow = outrow = 0; while (outrow < cinfo->max_v_samp_factor) { inptr = input_data[inrow]; outptr = output_data[outrow]; outend = outptr + cinfo->output_width; while (outptr < outend) { invalue = *inptr++; /* don't need GETJSAMPLE() here */ *outptr++ = invalue; *outptr++ = invalue; } jcopy_sample_rows(output_data, outrow, output_data, outrow+1, 1, cinfo->output_width); inrow++; outrow += 2; } } /* * Module initialization routine for upsampling. */ GLOBAL(void) jinit_upsampler (j_decompress_ptr cinfo) { my_upsample_ptr upsample; int ci; jpeg_component_info * compptr; boolean need_buffer; int h_in_group, v_in_group, h_out_group, v_out_group; upsample = (my_upsample_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_upsampler)); cinfo->upsample = (struct jpeg_upsampler *) upsample; upsample->pub.start_pass = start_pass_upsample; upsample->pub.upsample = sep_upsample; upsample->pub.need_context_rows = FALSE; /* until we find out differently */ if (cinfo->CCIR601_sampling) /* this isn't supported */ ERREXIT(cinfo, JERR_CCIR601_NOTIMPL); /* Verify we can handle the sampling factors, select per-component methods, * and create storage as needed. */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Compute size of an "input group" after IDCT scaling. This many samples * are to be converted to max_h_samp_factor * max_v_samp_factor pixels. */ h_in_group = (compptr->h_samp_factor * compptr->DCT_h_scaled_size) / cinfo->min_DCT_h_scaled_size; v_in_group = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; h_out_group = cinfo->max_h_samp_factor; v_out_group = cinfo->max_v_samp_factor; upsample->rowgroup_height[ci] = v_in_group; /* save for use later */ need_buffer = TRUE; if (! compptr->component_needed) { /* Don't bother to upsample an uninteresting component. */ upsample->methods[ci] = noop_upsample; need_buffer = FALSE; } else if (h_in_group == h_out_group && v_in_group == v_out_group) { /* Fullsize components can be processed without any work. */ upsample->methods[ci] = fullsize_upsample; need_buffer = FALSE; } else if (h_in_group * 2 == h_out_group && v_in_group == v_out_group) { /* Special case for 2h1v upsampling */ upsample->methods[ci] = h2v1_upsample; } else if (h_in_group * 2 == h_out_group && v_in_group * 2 == v_out_group) { /* Special case for 2h2v upsampling */ upsample->methods[ci] = h2v2_upsample; } else if ((h_out_group % h_in_group) == 0 && (v_out_group % v_in_group) == 0) { /* Generic integral-factors upsampling method */ upsample->methods[ci] = int_upsample; upsample->h_expand[ci] = (UINT8) (h_out_group / h_in_group); upsample->v_expand[ci] = (UINT8) (v_out_group / v_in_group); } else ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL); if (need_buffer) { upsample->color_buf[ci] = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) jround_up((long) cinfo->output_width, (long) cinfo->max_h_samp_factor), (JDIMENSION) cinfo->max_v_samp_factor); } } } jpeg-8d1/testimgp.jpg0000644000175000017500000001301510375342704013366 0ustar billbillJFIFC    $.' 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Setzepfandt, and Guido Vollbeding. ; ; To use this file, rename it to djpeg.prj. ; If you are using Turbo C, change filenames beginning with "pc..." to "tc..." ; Read installation instructions before trying to make the program! ; ; ; * * * Output file * * * djpeg.ttp ; ; * * * COMPILER OPTIONS * * * .C[-P] ; absolute calls .C[-M] ; and no string merging, folks .C[-w-cln] ; no "constant is long" warnings .C[-w-par] ; no "parameter xxxx unused" .C[-w-rch] ; no "unreachable code" .C[-wsig] ; warn if significant digits may be lost = ; * * * * List of modules * * * * pcstart.o djpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h) cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) rdcolmap.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) wrppm.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) wrgif.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) wrtarga.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) wrbmp.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) wrrle.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) libjpeg.lib ; built by libjpeg.prj pcfltlib.lib ; floating point library ; the float library can be omitted if you've turned off DCT_FLOAT_SUPPORTED pcstdlib.lib ; standard library pcextlib.lib ; extended library jpeg-8d1/testprog.jpg0000644000175000017500000001302706006473232013401 0ustar billbillJFIFC    $.' 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(Rc9x)> Uk)oE xt>|!1QAaq?K,g+bL;9u1:oȽBbݰ1?@1l1o~Jޤ8o "uYYgvgwӲf<9fj} v0zBzΥG- v =FѲ::Xǁ6-SjHܨ{Q{l!_KyG݃'\DŽ۷㢗\/(ct}-;qxq'!1AQaqѱ ?;ŘJȋ8EP4cM(L$eEX\D(2Ygpl0s&R1^*9 2`!Qj &rR%KBFҠd6 ĵPLQV4gRibCFI]UV#w g:gsSLP#k U̷.ylS*qamkN^z!JQۆ\AD4IIr0,}^AJ~#uD0̷-6\|6D鉓PG5)]CXMڰ@It)< #C\#vC66j# Ԋ7Xy,[|Di`TGQU9e_h#U) 6&F8qU1 6Nh|_rĢ;`X/E'('Aw gJ\˅y 2f Z=tqs,w_aF`ߴ^)PEVZn_C,r= ~UY8˓̸B%Y6Q]@x0%&(JGlɸ|W\}!HTfXT|<"7猨0}*c^WR<ɷq]>!bo48D<pz ǼҤ),Prۈ$[cG-?n.ܢ᛹d+[AXIW*cV6˨=uc2ԙB&nLl,'FXF=mmE4RyNNc0F,_.?p42PmqĪI叄+aFR5[51,$A2!!HE8X=KZ$t8jxg/7 n5/B!SB(ܤJȥA%ʁ qFY]p"Ǧ5bu˛G0 )_#!Bfuw $D%HdQs-,|+;:3R#Ǩq`s>XʼD(dzZ`E qU`PE&qZUqhpSE߈3NI5+0fTAQm'Pjpeg-8d1/jmorecfg.h0000644000175000017500000003041611627416160013000 0ustar billbill/* * jmorecfg.h * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 1997-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains additional configuration options that customize the * JPEG software for special applications or support machine-dependent * optimizations. Most users will not need to touch this file. */ /* * Define BITS_IN_JSAMPLE as either * 8 for 8-bit sample values (the usual setting) * 12 for 12-bit sample values * Only 8 and 12 are legal data precisions for lossy JPEG according to the * JPEG standard, and the IJG code does not support anything else! * We do not support run-time selection of data precision, sorry. */ #define BITS_IN_JSAMPLE 8 /* use 8 or 12 */ /* * Maximum number of components (color channels) allowed in JPEG image. * To meet the letter of the JPEG spec, set this to 255. However, darn * few applications need more than 4 channels (maybe 5 for CMYK + alpha * mask). We recommend 10 as a reasonable compromise; use 4 if you are * really short on memory. (Each allowed component costs a hundred or so * bytes of storage, whether actually used in an image or not.) */ #define MAX_COMPONENTS 10 /* maximum number of image components */ /* * Basic data types. * You may need to change these if you have a machine with unusual data * type sizes; for example, "char" not 8 bits, "short" not 16 bits, * or "long" not 32 bits. We don't care whether "int" is 16 or 32 bits, * but it had better be at least 16. */ /* Representation of a single sample (pixel element value). * We frequently allocate large arrays of these, so it's important to keep * them small. But if you have memory to burn and access to char or short * arrays is very slow on your hardware, you might want to change these. */ #if BITS_IN_JSAMPLE == 8 /* JSAMPLE should be the smallest type that will hold the values 0..255. * You can use a signed char by having GETJSAMPLE mask it with 0xFF. */ #ifdef HAVE_UNSIGNED_CHAR typedef unsigned char JSAMPLE; #define GETJSAMPLE(value) ((int) (value)) #else /* not HAVE_UNSIGNED_CHAR */ typedef char JSAMPLE; #ifdef CHAR_IS_UNSIGNED #define GETJSAMPLE(value) ((int) (value)) #else #define GETJSAMPLE(value) ((int) (value) & 0xFF) #endif /* CHAR_IS_UNSIGNED */ #endif /* HAVE_UNSIGNED_CHAR */ #define MAXJSAMPLE 255 #define CENTERJSAMPLE 128 #endif /* BITS_IN_JSAMPLE == 8 */ #if BITS_IN_JSAMPLE == 12 /* JSAMPLE should be the smallest type that will hold the values 0..4095. * On nearly all machines "short" will do nicely. */ typedef short JSAMPLE; #define GETJSAMPLE(value) ((int) (value)) #define MAXJSAMPLE 4095 #define CENTERJSAMPLE 2048 #endif /* BITS_IN_JSAMPLE == 12 */ /* Representation of a DCT frequency coefficient. * This should be a signed value of at least 16 bits; "short" is usually OK. * Again, we allocate large arrays of these, but you can change to int * if you have memory to burn and "short" is really slow. */ typedef short JCOEF; /* Compressed datastreams are represented as arrays of JOCTET. * These must be EXACTLY 8 bits wide, at least once they are written to * external storage. Note that when using the stdio data source/destination * managers, this is also the data type passed to fread/fwrite. */ #ifdef HAVE_UNSIGNED_CHAR typedef unsigned char JOCTET; #define GETJOCTET(value) (value) #else /* not HAVE_UNSIGNED_CHAR */ typedef char JOCTET; #ifdef CHAR_IS_UNSIGNED #define GETJOCTET(value) (value) #else #define GETJOCTET(value) ((value) & 0xFF) #endif /* CHAR_IS_UNSIGNED */ #endif /* HAVE_UNSIGNED_CHAR */ /* These typedefs are used for various table entries and so forth. * They must be at least as wide as specified; but making them too big * won't cost a huge amount of memory, so we don't provide special * extraction code like we did for JSAMPLE. (In other words, these * typedefs live at a different point on the speed/space tradeoff curve.) */ /* UINT8 must hold at least the values 0..255. */ #ifdef HAVE_UNSIGNED_CHAR typedef unsigned char UINT8; #else /* not HAVE_UNSIGNED_CHAR */ #ifdef CHAR_IS_UNSIGNED typedef char UINT8; #else /* not CHAR_IS_UNSIGNED */ typedef short UINT8; #endif /* CHAR_IS_UNSIGNED */ #endif /* HAVE_UNSIGNED_CHAR */ /* UINT16 must hold at least the values 0..65535. */ #ifdef HAVE_UNSIGNED_SHORT typedef unsigned short UINT16; #else /* not HAVE_UNSIGNED_SHORT */ typedef unsigned int UINT16; #endif /* HAVE_UNSIGNED_SHORT */ /* INT16 must hold at least the values -32768..32767. */ #ifndef XMD_H /* X11/xmd.h correctly defines INT16 */ typedef short INT16; #endif /* INT32 must hold at least signed 32-bit values. */ #ifndef XMD_H /* X11/xmd.h correctly defines INT32 */ #ifndef _BASETSD_H_ /* Microsoft defines it in basetsd.h */ #ifndef _BASETSD_H /* MinGW is slightly different */ #ifndef QGLOBAL_H /* Qt defines it in qglobal.h */ typedef long INT32; #endif #endif #endif #endif /* Datatype used for image dimensions. The JPEG standard only supports * images up to 64K*64K due to 16-bit fields in SOF markers. Therefore * "unsigned int" is sufficient on all machines. However, if you need to * handle larger images and you don't mind deviating from the spec, you * can change this datatype. */ typedef unsigned int JDIMENSION; #define JPEG_MAX_DIMENSION 65500L /* a tad under 64K to prevent overflows */ /* These macros are used in all function definitions and extern declarations. * You could modify them if you need to change function linkage conventions; * in particular, you'll need to do that to make the library a Windows DLL. * Another application is to make all functions global for use with debuggers * or code profilers that require it. */ /* a function called through method pointers: */ #define METHODDEF(type) static type /* a function used only in its module: */ #define LOCAL(type) static type /* a function referenced thru EXTERNs: */ #define GLOBAL(type) type /* a reference to a GLOBAL function: */ #define EXTERN(type) extern type /* This macro is used to declare a "method", that is, a function pointer. * We want to supply prototype parameters if the compiler can cope. * Note that the arglist parameter must be parenthesized! * Again, you can customize this if you need special linkage keywords. */ #ifdef HAVE_PROTOTYPES #define JMETHOD(type,methodname,arglist) type (*methodname) arglist #else #define JMETHOD(type,methodname,arglist) type (*methodname) () #endif /* Here is the pseudo-keyword for declaring pointers that must be "far" * on 80x86 machines. Most of the specialized coding for 80x86 is handled * by just saying "FAR *" where such a pointer is needed. In a few places * explicit coding is needed; see uses of the NEED_FAR_POINTERS symbol. */ #ifndef FAR #ifdef NEED_FAR_POINTERS #define FAR far #else #define FAR #endif #endif /* * On a few systems, type boolean and/or its values FALSE, TRUE may appear * in standard header files. Or you may have conflicts with application- * specific header files that you want to include together with these files. * Defining HAVE_BOOLEAN before including jpeglib.h should make it work. */ #ifndef HAVE_BOOLEAN typedef int boolean; #endif #ifndef FALSE /* in case these macros already exist */ #define FALSE 0 /* values of boolean */ #endif #ifndef TRUE #define TRUE 1 #endif /* * The remaining options affect code selection within the JPEG library, * but they don't need to be visible to most applications using the library. * To minimize application namespace pollution, the symbols won't be * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined. */ #ifdef JPEG_INTERNALS #define JPEG_INTERNAL_OPTIONS #endif #ifdef JPEG_INTERNAL_OPTIONS /* * These defines indicate whether to include various optional functions. * Undefining some of these symbols will produce a smaller but less capable * library. Note that you can leave certain source files out of the * compilation/linking process if you've #undef'd the corresponding symbols. * (You may HAVE to do that if your compiler doesn't like null source files.) */ /* Capability options common to encoder and decoder: */ #define DCT_ISLOW_SUPPORTED /* slow but accurate integer algorithm */ #define DCT_IFAST_SUPPORTED /* faster, less accurate integer method */ #define DCT_FLOAT_SUPPORTED /* floating-point: accurate, fast on fast HW */ /* Encoder capability options: */ #define C_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */ #define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ #define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ #define DCT_SCALING_SUPPORTED /* Input rescaling via DCT? (Requires DCT_ISLOW)*/ #define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */ /* Note: if you selected 12-bit data precision, it is dangerous to turn off * ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only good for 8-bit * precision, so jchuff.c normally uses entropy optimization to compute * usable tables for higher precision. If you don't want to do optimization, * you'll have to supply different default Huffman tables. * The exact same statements apply for progressive JPEG: the default tables * don't work for progressive mode. (This may get fixed, however.) */ #define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */ /* Decoder capability options: */ #define D_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */ #define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ #define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ #define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? */ #define SAVE_MARKERS_SUPPORTED /* jpeg_save_markers() needed? */ #define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */ #undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */ #define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */ #define QUANT_1PASS_SUPPORTED /* 1-pass color quantization? */ #define QUANT_2PASS_SUPPORTED /* 2-pass color quantization? */ /* more capability options later, no doubt */ /* * Ordering of RGB data in scanlines passed to or from the application. * If your application wants to deal with data in the order B,G,R, just * change these macros. You can also deal with formats such as R,G,B,X * (one extra byte per pixel) by changing RGB_PIXELSIZE. Note that changing * the offsets will also change the order in which colormap data is organized. * RESTRICTIONS: * 1. The sample applications cjpeg,djpeg do NOT support modified RGB formats. * 2. The color quantizer modules will not behave desirably if RGB_PIXELSIZE * is not 3 (they don't understand about dummy color components!). So you * can't use color quantization if you change that value. */ #define RGB_RED 0 /* Offset of Red in an RGB scanline element */ #define RGB_GREEN 1 /* Offset of Green */ #define RGB_BLUE 2 /* Offset of Blue */ #define RGB_PIXELSIZE 3 /* JSAMPLEs per RGB scanline element */ /* Definitions for speed-related optimizations. */ /* If your compiler supports inline functions, define INLINE * as the inline keyword; otherwise define it as empty. */ #ifndef INLINE #ifdef __GNUC__ /* for instance, GNU C knows about inline */ #define INLINE __inline__ #endif #ifndef INLINE #define INLINE /* default is to define it as empty */ #endif #endif /* On some machines (notably 68000 series) "int" is 32 bits, but multiplying * two 16-bit shorts is faster than multiplying two ints. Define MULTIPLIER * as short on such a machine. MULTIPLIER must be at least 16 bits wide. */ #ifndef MULTIPLIER #define MULTIPLIER int /* type for fastest integer multiply */ #endif /* FAST_FLOAT should be either float or double, whichever is done faster * by your compiler. (Note that this type is only used in the floating point * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.) * Typically, float is faster in ANSI C compilers, while double is faster in * pre-ANSI compilers (because they insist on converting to double anyway). * The code below therefore chooses float if we have ANSI-style prototypes. */ #ifndef FAST_FLOAT #ifdef HAVE_PROTOTYPES #define FAST_FLOAT float #else #define FAST_FLOAT double #endif #endif #endif /* JPEG_INTERNAL_OPTIONS */ jpeg-8d1/makejdep.vc60000644000175000017500000001265211174107664013240 0ustar billbill# Microsoft Developer Studio erstellte Abhngigkeitsdatei, einbezogen von jpeg.mak .\jaricom.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcapimin.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcapistd.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcarith.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jccoefct.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jccolor.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcdctmgr.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jchuff.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcinit.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcmainct.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcmarker.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcmaster.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcomapi.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcparam.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcprepct.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jcsample.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jctrans.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdapimin.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdapistd.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdarith.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdatadst.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\jdatasrc.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ .\jdcoefct.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdcolor.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jddctmgr.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdhuff.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdinput.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdmainct.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdmarker.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdmaster.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdmerge.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdpostct.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdsample.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jdtrans.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jerror.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpeglib.h"\ ".\jversion.h"\ .\jfdctflt.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jfdctfst.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jfdctint.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jidctflt.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jidctfst.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jidctint.c : \ ".\jconfig.h"\ ".\jdct.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jmemmgr.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmemsys.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jmemnobs.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmemsys.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jquant1.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jquant2.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ .\jutils.c : \ ".\jconfig.h"\ ".\jerror.h"\ ".\jinclude.h"\ ".\jmorecfg.h"\ ".\jpegint.h"\ ".\jpeglib.h"\ jpeg-8d1/makecfil.v100000644000175000017500000000436011367232726013142 0ustar billbill {4FC737F1-C7A5-4376-A066-2A32D752A2FF} cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx {93995380-89BD-4b04-88EB-625FBE52EBFB} h;hpp;hxx;hm;inl;inc;xsd {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms Header Files Header Files Header Files Header Files Header Files Header Files Header Files Header Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files jpeg-8d1/coderules.txt0000644000175000017500000001236411161221561013553 0ustar billbillIJG JPEG LIBRARY: CODING RULES Copyright (C) 1991-1996, Thomas G. Lane. This file is part of the Independent JPEG Group's software. For conditions of distribution and use, see the accompanying README file. Since numerous people will be contributing code and bug fixes, it's important to establish a common coding style. The goal of using similar coding styles is much more important than the details of just what that style is. In general we follow the recommendations of "Recommended C Style and Coding Standards" revision 6.1 (Cannon et al. as modified by Spencer, Keppel and Brader). This document is available in the IJG FTP archive (see jpeg/doc/cstyle.ms.tbl.Z, or cstyle.txt.Z for those without nroff/tbl). Block comments should be laid out thusly: /* * Block comments in this style. */ We indent statements in K&R style, e.g., if (test) { then-part; } else { else-part; } with two spaces per indentation level. (This indentation convention is handled automatically by GNU Emacs and many other text editors.) Multi-word names should be written in lower case with underscores, e.g., multi_word_name (not multiWordName). Preprocessor symbols and enum constants are similar but upper case (MULTI_WORD_NAME). Names should be unique within the first fifteen characters. (On some older systems, global names must be unique within six characters. We accommodate this without cluttering the source code by using macros to substitute shorter names.) We use function prototypes everywhere; we rely on automatic source code transformation to feed prototype-less C compilers. Transformation is done by the simple and portable tool 'ansi2knr.c' (courtesy of Ghostscript). ansi2knr is not very bright, so it imposes a format requirement on function declarations: the function name MUST BEGIN IN COLUMN 1. Thus all functions should be written in the following style: LOCAL(int *) function_name (int a, char *b) { code... } Note that each function definition must begin with GLOBAL(type), LOCAL(type), or METHODDEF(type). These macros expand to "static type" or just "type" as appropriate. They provide a readable indication of the routine's usage and can readily be changed for special needs. (For instance, special linkage keywords can be inserted for use in Windows DLLs.) ansi2knr does not transform method declarations (function pointers in structs). We handle these with a macro JMETHOD, defined as #ifdef HAVE_PROTOTYPES #define JMETHOD(type,methodname,arglist) type (*methodname) arglist #else #define JMETHOD(type,methodname,arglist) type (*methodname) () #endif which is used like this: struct function_pointers { JMETHOD(void, init_entropy_encoder, (int somearg, jparms *jp)); JMETHOD(void, term_entropy_encoder, (void)); }; Note the set of parentheses surrounding the parameter list. A similar solution is used for forward and external function declarations (see the EXTERN and JPP macros). If the code is to work on non-ANSI compilers, we cannot rely on a prototype declaration to coerce actual parameters into the right types. Therefore, use explicit casts on actual parameters whenever the actual parameter type is not identical to the formal parameter. Beware of implicit conversions to "int". It seems there are some non-ANSI compilers in which the sizeof() operator is defined to return int, yet size_t is defined as long. Needless to say, this is brain-damaged. Always use the SIZEOF() macro in place of sizeof(), so that the result is guaranteed to be of type size_t. The JPEG library is intended to be used within larger programs. Furthermore, we want it to be reentrant so that it can be used by applications that process multiple images concurrently. The following rules support these requirements: 1. Avoid direct use of file I/O, "malloc", error report printouts, etc; pass these through the common routines provided. 2. Minimize global namespace pollution. Functions should be declared static wherever possible. (Note that our method-based calling conventions help this a lot: in many modules only the initialization function will ever need to be called directly, so only that function need be externally visible.) All global function names should begin with "jpeg_", and should have an abbreviated name (unique in the first six characters) substituted by macro when NEED_SHORT_EXTERNAL_NAMES is set. 3. Don't use global variables; anything that must be used in another module should be in the common data structures. 4. Don't use static variables except for read-only constant tables. Variables that should be private to a module can be placed into private structures (see the system architecture document, structure.txt). 5. Source file names should begin with "j" for files that are part of the library proper; source files that are not part of the library, such as cjpeg.c and djpeg.c, do not begin with "j". Keep source file names to eight characters (plus ".c" or ".h", etc) to make life easy for MS-DOSers. Keep compression and decompression code in separate source files --- some applications may want only one half of the library. Note: these rules (particularly #4) are not followed religiously in the modules that are used in cjpeg/djpeg but are not part of the JPEG library proper. Those modules are not really intended to be used in other applications. jpeg-8d1/jerror.c0000644000175000017500000001717106473622364012515 0ustar billbill/* * jerror.c * * Copyright (C) 1991-1998, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains simple error-reporting and trace-message routines. * These are suitable for Unix-like systems and others where writing to * stderr is the right thing to do. Many applications will want to replace * some or all of these routines. * * If you define USE_WINDOWS_MESSAGEBOX in jconfig.h or in the makefile, * you get a Windows-specific hack to display error messages in a dialog box. * It ain't much, but it beats dropping error messages into the bit bucket, * which is what happens to output to stderr under most Windows C compilers. * * These routines are used by both the compression and decompression code. */ /* this is not a core library module, so it doesn't define JPEG_INTERNALS */ #include "jinclude.h" #include "jpeglib.h" #include "jversion.h" #include "jerror.h" #ifdef USE_WINDOWS_MESSAGEBOX #include #endif #ifndef EXIT_FAILURE /* define exit() codes if not provided */ #define EXIT_FAILURE 1 #endif /* * Create the message string table. * We do this from the master message list in jerror.h by re-reading * jerror.h with a suitable definition for macro JMESSAGE. * The message table is made an external symbol just in case any applications * want to refer to it directly. */ #ifdef NEED_SHORT_EXTERNAL_NAMES #define jpeg_std_message_table jMsgTable #endif #define JMESSAGE(code,string) string , const char * const jpeg_std_message_table[] = { #include "jerror.h" NULL }; /* * Error exit handler: must not return to caller. * * Applications may override this if they want to get control back after * an error. Typically one would longjmp somewhere instead of exiting. * The setjmp buffer can be made a private field within an expanded error * handler object. Note that the info needed to generate an error message * is stored in the error object, so you can generate the message now or * later, at your convenience. * You should make sure that the JPEG object is cleaned up (with jpeg_abort * or jpeg_destroy) at some point. */ METHODDEF(void) error_exit (j_common_ptr cinfo) { /* Always display the message */ (*cinfo->err->output_message) (cinfo); /* Let the memory manager delete any temp files before we die */ jpeg_destroy(cinfo); exit(EXIT_FAILURE); } /* * Actual output of an error or trace message. * Applications may override this method to send JPEG messages somewhere * other than stderr. * * On Windows, printing to stderr is generally completely useless, * so we provide optional code to produce an error-dialog popup. * Most Windows applications will still prefer to override this routine, * but if they don't, it'll do something at least marginally useful. * * NOTE: to use the library in an environment that doesn't support the * C stdio library, you may have to delete the call to fprintf() entirely, * not just not use this routine. */ METHODDEF(void) output_message (j_common_ptr cinfo) { char buffer[JMSG_LENGTH_MAX]; /* Create the message */ (*cinfo->err->format_message) (cinfo, buffer); #ifdef USE_WINDOWS_MESSAGEBOX /* Display it in a message dialog box */ MessageBox(GetActiveWindow(), buffer, "JPEG Library Error", MB_OK | MB_ICONERROR); #else /* Send it to stderr, adding a newline */ fprintf(stderr, "%s\n", buffer); #endif } /* * Decide whether to emit a trace or warning message. * msg_level is one of: * -1: recoverable corrupt-data warning, may want to abort. * 0: important advisory messages (always display to user). * 1: first level of tracing detail. * 2,3,...: successively more detailed tracing messages. * An application might override this method if it wanted to abort on warnings * or change the policy about which messages to display. */ METHODDEF(void) emit_message (j_common_ptr cinfo, int msg_level) { struct jpeg_error_mgr * err = cinfo->err; if (msg_level < 0) { /* It's a warning message. Since corrupt files may generate many warnings, * the policy implemented here is to show only the first warning, * unless trace_level >= 3. */ if (err->num_warnings == 0 || err->trace_level >= 3) (*err->output_message) (cinfo); /* Always count warnings in num_warnings. */ err->num_warnings++; } else { /* It's a trace message. Show it if trace_level >= msg_level. */ if (err->trace_level >= msg_level) (*err->output_message) (cinfo); } } /* * Format a message string for the most recent JPEG error or message. * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX * characters. Note that no '\n' character is added to the string. * Few applications should need to override this method. */ METHODDEF(void) format_message (j_common_ptr cinfo, char * buffer) { struct jpeg_error_mgr * err = cinfo->err; int msg_code = err->msg_code; const char * msgtext = NULL; const char * msgptr; char ch; boolean isstring; /* Look up message string in proper table */ if (msg_code > 0 && msg_code <= err->last_jpeg_message) { msgtext = err->jpeg_message_table[msg_code]; } else if (err->addon_message_table != NULL && msg_code >= err->first_addon_message && msg_code <= err->last_addon_message) { msgtext = err->addon_message_table[msg_code - err->first_addon_message]; } /* Defend against bogus message number */ if (msgtext == NULL) { err->msg_parm.i[0] = msg_code; msgtext = err->jpeg_message_table[0]; } /* Check for string parameter, as indicated by %s in the message text */ isstring = FALSE; msgptr = msgtext; while ((ch = *msgptr++) != '\0') { if (ch == '%') { if (*msgptr == 's') isstring = TRUE; break; } } /* Format the message into the passed buffer */ if (isstring) sprintf(buffer, msgtext, err->msg_parm.s); else sprintf(buffer, msgtext, err->msg_parm.i[0], err->msg_parm.i[1], err->msg_parm.i[2], err->msg_parm.i[3], err->msg_parm.i[4], err->msg_parm.i[5], err->msg_parm.i[6], err->msg_parm.i[7]); } /* * Reset error state variables at start of a new image. * This is called during compression startup to reset trace/error * processing to default state, without losing any application-specific * method pointers. An application might possibly want to override * this method if it has additional error processing state. */ METHODDEF(void) reset_error_mgr (j_common_ptr cinfo) { cinfo->err->num_warnings = 0; /* trace_level is not reset since it is an application-supplied parameter */ cinfo->err->msg_code = 0; /* may be useful as a flag for "no error" */ } /* * Fill in the standard error-handling methods in a jpeg_error_mgr object. * Typical call is: * struct jpeg_compress_struct cinfo; * struct jpeg_error_mgr err; * * cinfo.err = jpeg_std_error(&err); * after which the application may override some of the methods. */ GLOBAL(struct jpeg_error_mgr *) jpeg_std_error (struct jpeg_error_mgr * err) { err->error_exit = error_exit; err->emit_message = emit_message; err->output_message = output_message; err->format_message = format_message; err->reset_error_mgr = reset_error_mgr; err->trace_level = 0; /* default = no tracing */ err->num_warnings = 0; /* no warnings emitted yet */ err->msg_code = 0; /* may be useful as a flag for "no error" */ /* Initialize message table pointers */ err->jpeg_message_table = jpeg_std_message_table; err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1; err->addon_message_table = NULL; err->first_addon_message = 0; /* for safety */ err->last_addon_message = 0; return err; } jpeg-8d1/jconfig.cfg0000644000175000017500000000267011366277322013141 0ustar billbill/* jconfig.cfg --- source file edited by configure script */ /* see jconfig.txt for explanations */ #undef HAVE_PROTOTYPES #undef HAVE_UNSIGNED_CHAR #undef HAVE_UNSIGNED_SHORT #undef void #undef const #undef CHAR_IS_UNSIGNED #undef HAVE_STDDEF_H #undef HAVE_STDLIB_H #undef HAVE_LOCALE_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #undef NEED_FAR_POINTERS #undef NEED_SHORT_EXTERNAL_NAMES /* Define this if you get warnings about undefined structures. */ #undef INCOMPLETE_TYPES_BROKEN /* Define "boolean" as unsigned char, not int, on Windows systems. */ #ifdef _WIN32 #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ typedef unsigned char boolean; #endif #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ #endif #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #undef INLINE /* These are for configuring the JPEG memory manager. */ #undef DEFAULT_MAX_MEM #undef NO_MKTEMP #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #undef TWO_FILE_COMMANDLINE #undef NEED_SIGNAL_CATCHER #undef DONT_USE_B_MODE /* Define this if you want percent-done progress reports from cjpeg/djpeg. */ #undef PROGRESS_REPORT #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/jconfig.dj0000644000175000017500000000216711161225424012765 0ustar billbill/* jconfig.dj --- jconfig.h for DJGPP (Delorie's GNU C port) on MS-DOS. */ /* see jconfig.txt for explanations */ #define HAVE_PROTOTYPES #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* #define void char */ /* #define const */ #undef CHAR_IS_UNSIGNED #define HAVE_STDDEF_H #define HAVE_STDLIB_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #undef NEED_FAR_POINTERS /* DJGPP uses flat 32-bit addressing */ #undef NEED_SHORT_EXTERNAL_NAMES #undef INCOMPLETE_TYPES_BROKEN #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #undef TWO_FILE_COMMANDLINE /* optional */ #define USE_SETMODE /* Needed to make one-file style work in DJGPP */ #undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */ #undef DONT_USE_B_MODE #undef PROGRESS_REPORT /* optional */ #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/jconfig.st0000644000175000017500000000243411161225526013016 0ustar billbill/* jconfig.st --- jconfig.h for Atari ST/STE/TT using Pure C or Turbo C. */ /* see jconfig.txt for explanations */ #define HAVE_PROTOTYPES #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* #define void char */ /* #define const */ #undef CHAR_IS_UNSIGNED #define HAVE_STDDEF_H #define HAVE_STDLIB_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #undef NEED_FAR_POINTERS #undef NEED_SHORT_EXTERNAL_NAMES #define INCOMPLETE_TYPES_BROKEN /* suppress undefined-structure warnings */ #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #define ALIGN_TYPE long /* apparently double is a weird size? */ #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #define TWO_FILE_COMMANDLINE /* optional -- undef if you like Unix style */ /* Note: if you undef TWO_FILE_COMMANDLINE, you may need to define * USE_SETMODE. Some Atari compilers require it, some do not. */ #define NEED_SIGNAL_CATCHER /* needed if you use jmemname.c */ #undef DONT_USE_B_MODE #undef PROGRESS_REPORT /* optional */ #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/filelist.txt0000644000175000017500000002056511301473034013403 0ustar billbillIJG JPEG LIBRARY: FILE LIST Copyright (C) 1994-2009, Thomas G. Lane, Guido Vollbeding. This file is part of the Independent JPEG Group's software. For conditions of distribution and use, see the accompanying README file. Here is a road map to the files in the IJG JPEG distribution. The distribution includes the JPEG library proper, plus two application programs ("cjpeg" and "djpeg") which use the library to convert JPEG files to and from some other popular image formats. A third application "jpegtran" uses the library to do lossless conversion between different variants of JPEG. There are also two stand-alone applications, "rdjpgcom" and "wrjpgcom". THE JPEG LIBRARY ================ Include files: jpeglib.h JPEG library's exported data and function declarations. jconfig.h Configuration declarations. Note: this file is not present in the distribution; it is generated during installation. jmorecfg.h Additional configuration declarations; need not be changed for a standard installation. jerror.h Declares JPEG library's error and trace message codes. jinclude.h Central include file used by all IJG .c files to reference system include files. jpegint.h JPEG library's internal data structures. jdct.h Private declarations for forward & reverse DCT subsystems. jmemsys.h Private declarations for memory management subsystem. jversion.h Version information. Applications using the library should include jpeglib.h (which in turn includes jconfig.h and jmorecfg.h). Optionally, jerror.h may be included if the application needs to reference individual JPEG error codes. The other include files are intended for internal use and would not normally be included by an application program. (cjpeg/djpeg/etc do use jinclude.h, since its function is to improve portability of the whole IJG distribution. Most other applications will directly include the system include files they want, and hence won't need jinclude.h.) C source code files: These files contain most of the functions intended to be called directly by an application program: jcapimin.c Application program interface: core routines for compression. jcapistd.c Application program interface: standard compression. jdapimin.c Application program interface: core routines for decompression. jdapistd.c Application program interface: standard decompression. jcomapi.c Application program interface routines common to compression and decompression. jcparam.c Compression parameter setting helper routines. jctrans.c API and library routines for transcoding compression. jdtrans.c API and library routines for transcoding decompression. Compression side of the library: jcinit.c Initialization: determines which other modules to use. jcmaster.c Master control: setup and inter-pass sequencing logic. jcmainct.c Main buffer controller (preprocessor => JPEG compressor). jcprepct.c Preprocessor buffer controller. jccoefct.c Buffer controller for DCT coefficient buffer. jccolor.c Color space conversion. jcsample.c Downsampling. jcdctmgr.c DCT manager (DCT implementation selection & control). jfdctint.c Forward DCT using slow-but-accurate integer method. jfdctfst.c Forward DCT using faster, less accurate integer method. jfdctflt.c Forward DCT using floating-point arithmetic. jchuff.c Huffman entropy coding. jcarith.c Arithmetic entropy coding. jcmarker.c JPEG marker writing. jdatadst.c Data destination managers for memory and stdio output. Decompression side of the library: jdmaster.c Master control: determines which other modules to use. jdinput.c Input controller: controls input processing modules. jdmainct.c Main buffer controller (JPEG decompressor => postprocessor). jdcoefct.c Buffer controller for DCT coefficient buffer. jdpostct.c Postprocessor buffer controller. jdmarker.c JPEG marker reading. jdhuff.c Huffman entropy decoding. jdarith.c Arithmetic entropy decoding. jddctmgr.c IDCT manager (IDCT implementation selection & control). jidctint.c Inverse DCT using slow-but-accurate integer method. jidctfst.c Inverse DCT using faster, less accurate integer method. jidctflt.c Inverse DCT using floating-point arithmetic. jdsample.c Upsampling. jdcolor.c Color space conversion. jdmerge.c Merged upsampling/color conversion (faster, lower quality). jquant1.c One-pass color quantization using a fixed-spacing colormap. jquant2.c Two-pass color quantization using a custom-generated colormap. Also handles one-pass quantization to an externally given map. jdatasrc.c Data source managers for memory and stdio input. Support files for both compression and decompression: jaricom.c Tables for common use in arithmetic entropy encoding and decoding routines. jerror.c Standard error handling routines (application replaceable). jmemmgr.c System-independent (more or less) memory management code. jutils.c Miscellaneous utility routines. jmemmgr.c relies on a system-dependent memory management module. The IJG distribution includes the following implementations of the system-dependent module: jmemnobs.c "No backing store": assumes adequate virtual memory exists. jmemansi.c Makes temporary files with ANSI-standard routine tmpfile(). jmemname.c Makes temporary files with program-generated file names. jmemdos.c Custom implementation for MS-DOS (16-bit environment only): can use extended and expanded memory as well as temp files. jmemmac.c Custom implementation for Apple Macintosh. Exactly one of the system-dependent modules should be configured into an installed JPEG library (see install.txt for hints about which one to use). On unusual systems you may find it worthwhile to make a special system-dependent memory manager. Non-C source code files: jmemdosa.asm 80x86 assembly code support for jmemdos.c; used only in MS-DOS-specific configurations of the JPEG library. CJPEG/DJPEG/JPEGTRAN ==================== Include files: cdjpeg.h Declarations shared by cjpeg/djpeg/jpegtran modules. cderror.h Additional error and trace message codes for cjpeg et al. transupp.h Declarations for jpegtran support routines in transupp.c. C source code files: cjpeg.c Main program for cjpeg. djpeg.c Main program for djpeg. jpegtran.c Main program for jpegtran. cdjpeg.c Utility routines used by all three programs. rdcolmap.c Code to read a colormap file for djpeg's "-map" switch. rdswitch.c Code to process some of cjpeg's more complex switches. Also used by jpegtran. transupp.c Support code for jpegtran: lossless image manipulations. Image file reader modules for cjpeg: rdbmp.c BMP file input. rdgif.c GIF file input (now just a stub). rdppm.c PPM/PGM file input. rdrle.c Utah RLE file input. rdtarga.c Targa file input. Image file writer modules for djpeg: wrbmp.c BMP file output. wrgif.c GIF file output (a mere shadow of its former self). wrppm.c PPM/PGM file output. wrrle.c Utah RLE file output. wrtarga.c Targa file output. RDJPGCOM/WRJPGCOM ================= C source code files: rdjpgcom.c Stand-alone rdjpgcom application. wrjpgcom.c Stand-alone wrjpgcom application. These programs do not depend on the IJG library. They do use jconfig.h and jinclude.h, only to improve portability. ADDITIONAL FILES ================ Documentation (see README for a guide to the documentation files): README Master documentation file. *.txt Other documentation files. *.1 Documentation in Unix man page format. change.log Version-to-version change highlights. example.c Sample code for calling JPEG library. Configuration/installation files and programs (see install.txt for more info): configure Unix shell script to perform automatic configuration. configure.ac Source file for use with Autoconf to generate configure. ltmain.sh Support scripts for configure (from GNU libtool). config.guess config.sub depcomp missing install-sh Install shell script for those Unix systems lacking one. Makefile.in Makefile input for configure. Makefile.am Source file for use with Automake to generate Makefile.in. ckconfig.c Program to generate jconfig.h on non-Unix systems. jconfig.txt Template for making jconfig.h by hand. mak*.* Sample makefiles for particular systems. jconfig.* Sample jconfig.h for particular systems. libjpeg.map Script to generate shared library with versioned symbols. aclocal.m4 M4 macro definitions for use with Autoconf. ansi2knr.c De-ANSIfier for pre-ANSI C compilers (courtesy of L. Peter Deutsch and Aladdin Enterprises). Test files (see install.txt for test procedure): test*.* Source and comparison files for confidence test. These are binary image files, NOT text files. jpeg-8d1/wrjpgcom.c0000644000175000017500000004026306423510170013022 0ustar billbill/* * wrjpgcom.c * * Copyright (C) 1994-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a very simple stand-alone application that inserts * user-supplied text as a COM (comment) marker in a JFIF file. * This may be useful as an example of the minimum logic needed to parse * JPEG markers. */ #define JPEG_CJPEG_DJPEG /* to get the command-line config symbols */ #include "jinclude.h" /* get auto-config symbols, */ #ifndef HAVE_STDLIB_H /* should declare malloc() */ extern void * malloc (); #endif #include /* to declare isupper(), tolower() */ #ifdef USE_SETMODE #include /* to declare setmode()'s parameter macros */ /* If you have setmode() but not , just delete this line: */ #include /* to declare setmode() */ #endif #ifdef USE_CCOMMAND /* command-line reader for Macintosh */ #ifdef __MWERKS__ #include /* Metrowerks needs this */ #include /* ... and this */ #endif #ifdef THINK_C #include /* Think declares it here */ #endif #endif #ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ #define READ_BINARY "r" #define WRITE_BINARY "w" #else #ifdef VMS /* VMS is very nonstandard */ #define READ_BINARY "rb", "ctx=stm" #define WRITE_BINARY "wb", "ctx=stm" #else /* standard ANSI-compliant case */ #define READ_BINARY "rb" #define WRITE_BINARY "wb" #endif #endif #ifndef EXIT_FAILURE /* define exit() codes if not provided */ #define EXIT_FAILURE 1 #endif #ifndef EXIT_SUCCESS #ifdef VMS #define EXIT_SUCCESS 1 /* VMS is very nonstandard */ #else #define EXIT_SUCCESS 0 #endif #endif /* Reduce this value if your malloc() can't allocate blocks up to 64K. * On DOS, compiling in large model is usually a better solution. */ #ifndef MAX_COM_LENGTH #define MAX_COM_LENGTH 65000L /* must be <= 65533 in any case */ #endif /* * These macros are used to read the input file and write the output file. * To reuse this code in another application, you might need to change these. */ static FILE * infile; /* input JPEG file */ /* Return next input byte, or EOF if no more */ #define NEXTBYTE() getc(infile) static FILE * outfile; /* output JPEG file */ /* Emit an output byte */ #define PUTBYTE(x) putc((x), outfile) /* Error exit handler */ #define ERREXIT(msg) (fprintf(stderr, "%s\n", msg), exit(EXIT_FAILURE)) /* Read one byte, testing for EOF */ static int read_1_byte (void) { int c; c = NEXTBYTE(); if (c == EOF) ERREXIT("Premature EOF in JPEG file"); return c; } /* Read 2 bytes, convert to unsigned int */ /* All 2-byte quantities in JPEG markers are MSB first */ static unsigned int read_2_bytes (void) { int c1, c2; c1 = NEXTBYTE(); if (c1 == EOF) ERREXIT("Premature EOF in JPEG file"); c2 = NEXTBYTE(); if (c2 == EOF) ERREXIT("Premature EOF in JPEG file"); return (((unsigned int) c1) << 8) + ((unsigned int) c2); } /* Routines to write data to output file */ static void write_1_byte (int c) { PUTBYTE(c); } static void write_2_bytes (unsigned int val) { PUTBYTE((val >> 8) & 0xFF); PUTBYTE(val & 0xFF); } static void write_marker (int marker) { PUTBYTE(0xFF); PUTBYTE(marker); } static void copy_rest_of_file (void) { int c; while ((c = NEXTBYTE()) != EOF) PUTBYTE(c); } /* * JPEG markers consist of one or more 0xFF bytes, followed by a marker * code byte (which is not an FF). Here are the marker codes of interest * in this program. (See jdmarker.c for a more complete list.) */ #define M_SOF0 0xC0 /* Start Of Frame N */ #define M_SOF1 0xC1 /* N indicates which compression process */ #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */ #define M_SOF3 0xC3 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ #define M_SOF6 0xC6 #define M_SOF7 0xC7 #define M_SOF9 0xC9 #define M_SOF10 0xCA #define M_SOF11 0xCB #define M_SOF13 0xCD #define M_SOF14 0xCE #define M_SOF15 0xCF #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */ #define M_EOI 0xD9 /* End Of Image (end of datastream) */ #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ #define M_COM 0xFE /* COMment */ /* * Find the next JPEG marker and return its marker code. * We expect at least one FF byte, possibly more if the compressor used FFs * to pad the file. (Padding FFs will NOT be replicated in the output file.) * There could also be non-FF garbage between markers. The treatment of such * garbage is unspecified; we choose to skip over it but emit a warning msg. * NB: this routine must not be used after seeing SOS marker, since it will * not deal correctly with FF/00 sequences in the compressed image data... */ static int next_marker (void) { int c; int discarded_bytes = 0; /* Find 0xFF byte; count and skip any non-FFs. */ c = read_1_byte(); while (c != 0xFF) { discarded_bytes++; c = read_1_byte(); } /* Get marker code byte, swallowing any duplicate FF bytes. Extra FFs * are legal as pad bytes, so don't count them in discarded_bytes. */ do { c = read_1_byte(); } while (c == 0xFF); if (discarded_bytes != 0) { fprintf(stderr, "Warning: garbage data found in JPEG file\n"); } return c; } /* * Read the initial marker, which should be SOI. * For a JFIF file, the first two bytes of the file should be literally * 0xFF M_SOI. To be more general, we could use next_marker, but if the * input file weren't actually JPEG at all, next_marker might read the whole * file and then return a misleading error message... */ static int first_marker (void) { int c1, c2; c1 = NEXTBYTE(); c2 = NEXTBYTE(); if (c1 != 0xFF || c2 != M_SOI) ERREXIT("Not a JPEG file"); return c2; } /* * Most types of marker are followed by a variable-length parameter segment. * This routine skips over the parameters for any marker we don't otherwise * want to process. * Note that we MUST skip the parameter segment explicitly in order not to * be fooled by 0xFF bytes that might appear within the parameter segment; * such bytes do NOT introduce new markers. */ static void copy_variable (void) /* Copy an unknown or uninteresting variable-length marker */ { unsigned int length; /* Get the marker parameter length count */ length = read_2_bytes(); write_2_bytes(length); /* Length includes itself, so must be at least 2 */ if (length < 2) ERREXIT("Erroneous JPEG marker length"); length -= 2; /* Skip over the remaining bytes */ while (length > 0) { write_1_byte(read_1_byte()); length--; } } static void skip_variable (void) /* Skip over an unknown or uninteresting variable-length marker */ { unsigned int length; /* Get the marker parameter length count */ length = read_2_bytes(); /* Length includes itself, so must be at least 2 */ if (length < 2) ERREXIT("Erroneous JPEG marker length"); length -= 2; /* Skip over the remaining bytes */ while (length > 0) { (void) read_1_byte(); length--; } } /* * Parse the marker stream until SOFn or EOI is seen; * copy data to output, but discard COM markers unless keep_COM is true. */ static int scan_JPEG_header (int keep_COM) { int marker; /* Expect SOI at start of file */ if (first_marker() != M_SOI) ERREXIT("Expected SOI marker first"); write_marker(M_SOI); /* Scan miscellaneous markers until we reach SOFn. */ for (;;) { marker = next_marker(); switch (marker) { /* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be, * treated as SOFn. C4 in particular is actually DHT. */ case M_SOF0: /* Baseline */ case M_SOF1: /* Extended sequential, Huffman */ case M_SOF2: /* Progressive, Huffman */ case M_SOF3: /* Lossless, Huffman */ case M_SOF5: /* Differential sequential, Huffman */ case M_SOF6: /* Differential progressive, Huffman */ case M_SOF7: /* Differential lossless, Huffman */ case M_SOF9: /* Extended sequential, arithmetic */ case M_SOF10: /* Progressive, arithmetic */ case M_SOF11: /* Lossless, arithmetic */ case M_SOF13: /* Differential sequential, arithmetic */ case M_SOF14: /* Differential progressive, arithmetic */ case M_SOF15: /* Differential lossless, arithmetic */ return marker; case M_SOS: /* should not see compressed data before SOF */ ERREXIT("SOS without prior SOFn"); break; case M_EOI: /* in case it's a tables-only JPEG stream */ return marker; case M_COM: /* Existing COM: conditionally discard */ if (keep_COM) { write_marker(marker); copy_variable(); } else { skip_variable(); } break; default: /* Anything else just gets copied */ write_marker(marker); copy_variable(); /* we assume it has a parameter count... */ break; } } /* end loop */ } /* Command line parsing code */ static const char * progname; /* program name for error messages */ static void usage (void) /* complain about bad command line */ { fprintf(stderr, "wrjpgcom inserts a textual comment in a JPEG file.\n"); fprintf(stderr, "You can add to or replace any existing comment(s).\n"); fprintf(stderr, "Usage: %s [switches] ", progname); #ifdef TWO_FILE_COMMANDLINE fprintf(stderr, "inputfile outputfile\n"); #else fprintf(stderr, "[inputfile]\n"); #endif fprintf(stderr, "Switches (names may be abbreviated):\n"); fprintf(stderr, " -replace Delete any existing comments\n"); fprintf(stderr, " -comment \"text\" Insert comment with given text\n"); fprintf(stderr, " -cfile name Read comment from named file\n"); fprintf(stderr, "Notice that you must put quotes around the comment text\n"); fprintf(stderr, "when you use -comment.\n"); fprintf(stderr, "If you do not give either -comment or -cfile on the command line,\n"); fprintf(stderr, "then the comment text is read from standard input.\n"); fprintf(stderr, "It can be multiple lines, up to %u characters total.\n", (unsigned int) MAX_COM_LENGTH); #ifndef TWO_FILE_COMMANDLINE fprintf(stderr, "You must specify an input JPEG file name when supplying\n"); fprintf(stderr, "comment text from standard input.\n"); #endif exit(EXIT_FAILURE); } static int keymatch (char * arg, const char * keyword, int minchars) /* Case-insensitive matching of (possibly abbreviated) keyword switches. */ /* keyword is the constant keyword (must be lower case already), */ /* minchars is length of minimum legal abbreviation. */ { register int ca, ck; register int nmatched = 0; while ((ca = *arg++) != '\0') { if ((ck = *keyword++) == '\0') return 0; /* arg longer than keyword, no good */ if (isupper(ca)) /* force arg to lcase (assume ck is already) */ ca = tolower(ca); if (ca != ck) return 0; /* no good */ nmatched++; /* count matched characters */ } /* reached end of argument; fail if it's too short for unique abbrev */ if (nmatched < minchars) return 0; return 1; /* A-OK */ } /* * The main program. */ int main (int argc, char **argv) { int argn; char * arg; int keep_COM = 1; char * comment_arg = NULL; FILE * comment_file = NULL; unsigned int comment_length = 0; int marker; /* On Mac, fetch a command line. */ #ifdef USE_CCOMMAND argc = ccommand(&argv); #endif progname = argv[0]; if (progname == NULL || progname[0] == 0) progname = "wrjpgcom"; /* in case C library doesn't provide it */ /* Parse switches, if any */ for (argn = 1; argn < argc; argn++) { arg = argv[argn]; if (arg[0] != '-') break; /* not switch, must be file name */ arg++; /* advance over '-' */ if (keymatch(arg, "replace", 1)) { keep_COM = 0; } else if (keymatch(arg, "cfile", 2)) { if (++argn >= argc) usage(); if ((comment_file = fopen(argv[argn], "r")) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); exit(EXIT_FAILURE); } } else if (keymatch(arg, "comment", 1)) { if (++argn >= argc) usage(); comment_arg = argv[argn]; /* If the comment text starts with '"', then we are probably running * under MS-DOG and must parse out the quoted string ourselves. Sigh. */ if (comment_arg[0] == '"') { comment_arg = (char *) malloc((size_t) MAX_COM_LENGTH); if (comment_arg == NULL) ERREXIT("Insufficient memory"); strcpy(comment_arg, argv[argn]+1); for (;;) { comment_length = (unsigned int) strlen(comment_arg); if (comment_length > 0 && comment_arg[comment_length-1] == '"') { comment_arg[comment_length-1] = '\0'; /* zap terminating quote */ break; } if (++argn >= argc) ERREXIT("Missing ending quote mark"); strcat(comment_arg, " "); strcat(comment_arg, argv[argn]); } } comment_length = (unsigned int) strlen(comment_arg); } else usage(); } /* Cannot use both -comment and -cfile. */ if (comment_arg != NULL && comment_file != NULL) usage(); /* If there is neither -comment nor -cfile, we will read the comment text * from stdin; in this case there MUST be an input JPEG file name. */ if (comment_arg == NULL && comment_file == NULL && argn >= argc) usage(); /* Open the input file. */ if (argn < argc) { if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); exit(EXIT_FAILURE); } } else { /* default input file is stdin */ #ifdef USE_SETMODE /* need to hack file mode? */ setmode(fileno(stdin), O_BINARY); #endif #ifdef USE_FDOPEN /* need to re-open in binary mode? */ if ((infile = fdopen(fileno(stdin), READ_BINARY)) == NULL) { fprintf(stderr, "%s: can't open stdin\n", progname); exit(EXIT_FAILURE); } #else infile = stdin; #endif } /* Open the output file. */ #ifdef TWO_FILE_COMMANDLINE /* Must have explicit output file name */ if (argn != argc-2) { fprintf(stderr, "%s: must name one input and one output file\n", progname); usage(); } if ((outfile = fopen(argv[argn+1], WRITE_BINARY)) == NULL) { fprintf(stderr, "%s: can't open %s\n", progname, argv[argn+1]); exit(EXIT_FAILURE); } #else /* Unix style: expect zero or one file name */ if (argn < argc-1) { fprintf(stderr, "%s: only one input file\n", progname); usage(); } /* default output file is stdout */ #ifdef USE_SETMODE /* need to hack file mode? */ setmode(fileno(stdout), O_BINARY); #endif #ifdef USE_FDOPEN /* need to re-open in binary mode? */ if ((outfile = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) { fprintf(stderr, "%s: can't open stdout\n", progname); exit(EXIT_FAILURE); } #else outfile = stdout; #endif #endif /* TWO_FILE_COMMANDLINE */ /* Collect comment text from comment_file or stdin, if necessary */ if (comment_arg == NULL) { FILE * src_file; int c; comment_arg = (char *) malloc((size_t) MAX_COM_LENGTH); if (comment_arg == NULL) ERREXIT("Insufficient memory"); comment_length = 0; src_file = (comment_file != NULL ? comment_file : stdin); while ((c = getc(src_file)) != EOF) { if (comment_length >= (unsigned int) MAX_COM_LENGTH) { fprintf(stderr, "Comment text may not exceed %u bytes\n", (unsigned int) MAX_COM_LENGTH); exit(EXIT_FAILURE); } comment_arg[comment_length++] = (char) c; } if (comment_file != NULL) fclose(comment_file); } /* Copy JPEG headers until SOFn marker; * we will insert the new comment marker just before SOFn. * This (a) causes the new comment to appear after, rather than before, * existing comments; and (b) ensures that comments come after any JFIF * or JFXX markers, as required by the JFIF specification. */ marker = scan_JPEG_header(keep_COM); /* Insert the new COM marker, but only if nonempty text has been supplied */ if (comment_length > 0) { write_marker(M_COM); write_2_bytes(comment_length + 2); while (comment_length > 0) { write_1_byte(*comment_arg++); comment_length--; } } /* Duplicate the remainder of the source file. * Note that any COM markers occuring after SOF will not be touched. */ write_marker(marker); copy_rest_of_file(); /* All done. */ exit(EXIT_SUCCESS); return 0; /* suppress no-return-value warnings */ } jpeg-8d1/jdcolor.c0000644000175000017500000003760011630351524012631 0ustar billbill/* * jdcolor.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains output colorspace conversion routines. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Private subobject */ typedef struct { struct jpeg_color_deconverter pub; /* public fields */ /* Private state for YCC->RGB conversion */ int * Cr_r_tab; /* => table for Cr to R conversion */ int * Cb_b_tab; /* => table for Cb to B conversion */ INT32 * Cr_g_tab; /* => table for Cr to G conversion */ INT32 * Cb_g_tab; /* => table for Cb to G conversion */ /* Private state for RGB->Y conversion */ INT32 * rgb_y_tab; /* => table for RGB to Y conversion */ } my_color_deconverter; typedef my_color_deconverter * my_cconvert_ptr; /**************** YCbCr -> RGB conversion: most common case **************/ /**************** RGB -> Y conversion: less common case **************/ /* * YCbCr is defined per CCIR 601-1, except that Cb and Cr are * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. * The conversion equations to be implemented are therefore * * R = Y + 1.40200 * Cr * G = Y - 0.34414 * Cb - 0.71414 * Cr * B = Y + 1.77200 * Cb * * Y = 0.29900 * R + 0.58700 * G + 0.11400 * B * * where Cb and Cr represent the incoming values less CENTERJSAMPLE. * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) * * To avoid floating-point arithmetic, we represent the fractional constants * as integers scaled up by 2^16 (about 4 digits precision); we have to divide * the products by 2^16, with appropriate rounding, to get the correct answer. * Notice that Y, being an integral input, does not contribute any fraction * so it need not participate in the rounding. * * For even more speed, we avoid doing any multiplications in the inner loop * by precalculating the constants times Cb and Cr for all possible values. * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); * for 12-bit samples it is still acceptable. It's not very reasonable for * 16-bit samples, but if you want lossless storage you shouldn't be changing * colorspace anyway. * The Cr=>R and Cb=>B values can be rounded to integers in advance; the * values for the G calculation are left scaled up, since we must add them * together before rounding. */ #define SCALEBITS 16 /* speediest right-shift on some machines */ #define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) #define FIX(x) ((INT32) ((x) * (1L<Y conversion and divide it up into * three parts, instead of doing three alloc_small requests. This lets us * use a single table base address, which can be held in a register in the * inner loops on many machines (more than can hold all three addresses, * anyway). */ #define R_Y_OFF 0 /* offset to R => Y section */ #define G_Y_OFF (1*(MAXJSAMPLE+1)) /* offset to G => Y section */ #define B_Y_OFF (2*(MAXJSAMPLE+1)) /* etc. */ #define TABLE_SIZE (3*(MAXJSAMPLE+1)) /* * Initialize tables for YCC->RGB colorspace conversion. */ LOCAL(void) build_ycc_rgb_table (j_decompress_ptr cinfo) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; int i; INT32 x; SHIFT_TEMPS cconvert->Cr_r_tab = (int *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(int)); cconvert->Cb_b_tab = (int *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(int)); cconvert->Cr_g_tab = (INT32 *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(INT32)); cconvert->Cb_g_tab = (INT32 *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(INT32)); for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ /* Cr=>R value is nearest int to 1.40200 * x */ cconvert->Cr_r_tab[i] = (int) RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); /* Cb=>B value is nearest int to 1.77200 * x */ cconvert->Cb_b_tab[i] = (int) RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); /* Cr=>G value is scaled-up -0.71414 * x */ cconvert->Cr_g_tab[i] = (- FIX(0.71414)) * x; /* Cb=>G value is scaled-up -0.34414 * x */ /* We also add in ONE_HALF so that need not do it in inner loop */ cconvert->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF; } } /* * Convert some rows of samples to the output colorspace. * * Note that we change from noninterleaved, one-plane-per-component format * to interleaved-pixel format. The output buffer is therefore three times * as wide as the input buffer. * A starting row offset is provided only for the input buffer. The caller * can easily adjust the passed output_buf value to accommodate any row * offset required on that side. */ METHODDEF(void) ycc_rgb_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; register int y, cb, cr; register JSAMPROW outptr; register JSAMPROW inptr0, inptr1, inptr2; register JDIMENSION col; JDIMENSION num_cols = cinfo->output_width; /* copy these pointers into registers if possible */ register JSAMPLE * range_limit = cinfo->sample_range_limit; register int * Crrtab = cconvert->Cr_r_tab; register int * Cbbtab = cconvert->Cb_b_tab; register INT32 * Crgtab = cconvert->Cr_g_tab; register INT32 * Cbgtab = cconvert->Cb_g_tab; SHIFT_TEMPS while (--num_rows >= 0) { inptr0 = input_buf[0][input_row]; inptr1 = input_buf[1][input_row]; inptr2 = input_buf[2][input_row]; input_row++; outptr = *output_buf++; for (col = 0; col < num_cols; col++) { y = GETJSAMPLE(inptr0[col]); cb = GETJSAMPLE(inptr1[col]); cr = GETJSAMPLE(inptr2[col]); /* Range-limiting is essential due to noise introduced by DCT losses. */ outptr[RGB_RED] = range_limit[y + Crrtab[cr]]; outptr[RGB_GREEN] = range_limit[y + ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS))]; outptr[RGB_BLUE] = range_limit[y + Cbbtab[cb]]; outptr += RGB_PIXELSIZE; } } } /**************** Cases other than YCbCr -> RGB **************/ /* * Initialize for RGB->grayscale colorspace conversion. */ LOCAL(void) build_rgb_y_table (j_decompress_ptr cinfo) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; INT32 * rgb_y_tab; INT32 i; /* Allocate and fill in the conversion tables. */ cconvert->rgb_y_tab = rgb_y_tab = (INT32 *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (TABLE_SIZE * SIZEOF(INT32))); for (i = 0; i <= MAXJSAMPLE; i++) { rgb_y_tab[i+R_Y_OFF] = FIX(0.29900) * i; rgb_y_tab[i+G_Y_OFF] = FIX(0.58700) * i; rgb_y_tab[i+B_Y_OFF] = FIX(0.11400) * i + ONE_HALF; } } /* * Convert RGB to grayscale. */ METHODDEF(void) rgb_gray_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; register int r, g, b; register INT32 * ctab = cconvert->rgb_y_tab; register JSAMPROW outptr; register JSAMPROW inptr0, inptr1, inptr2; register JDIMENSION col; JDIMENSION num_cols = cinfo->output_width; while (--num_rows >= 0) { inptr0 = input_buf[0][input_row]; inptr1 = input_buf[1][input_row]; inptr2 = input_buf[2][input_row]; input_row++; outptr = *output_buf++; for (col = 0; col < num_cols; col++) { r = GETJSAMPLE(inptr0[col]); g = GETJSAMPLE(inptr1[col]); b = GETJSAMPLE(inptr2[col]); /* Y */ outptr[col] = (JSAMPLE) ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) >> SCALEBITS); } } } /* * No colorspace change, but conversion from separate-planes * to interleaved representation. */ METHODDEF(void) rgb_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { register JSAMPROW outptr; register JSAMPROW inptr0, inptr1, inptr2; register JDIMENSION col; JDIMENSION num_cols = cinfo->output_width; while (--num_rows >= 0) { inptr0 = input_buf[0][input_row]; inptr1 = input_buf[1][input_row]; inptr2 = input_buf[2][input_row]; input_row++; outptr = *output_buf++; for (col = 0; col < num_cols; col++) { /* We can dispense with GETJSAMPLE() here */ outptr[RGB_RED] = inptr0[col]; outptr[RGB_GREEN] = inptr1[col]; outptr[RGB_BLUE] = inptr2[col]; outptr += RGB_PIXELSIZE; } } } /* * Color conversion for no colorspace change: just copy the data, * converting from separate-planes to interleaved representation. */ METHODDEF(void) null_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { register JSAMPROW inptr, outptr; register JDIMENSION count; register int num_components = cinfo->num_components; JDIMENSION num_cols = cinfo->output_width; int ci; while (--num_rows >= 0) { for (ci = 0; ci < num_components; ci++) { inptr = input_buf[ci][input_row]; outptr = output_buf[0] + ci; for (count = num_cols; count > 0; count--) { *outptr = *inptr++; /* needn't bother with GETJSAMPLE() here */ outptr += num_components; } } input_row++; output_buf++; } } /* * Color conversion for grayscale: just copy the data. * This also works for YCbCr -> grayscale conversion, in which * we just copy the Y (luminance) component and ignore chrominance. */ METHODDEF(void) grayscale_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { jcopy_sample_rows(input_buf[0], (int) input_row, output_buf, 0, num_rows, cinfo->output_width); } /* * Convert grayscale to RGB: just duplicate the graylevel three times. * This is provided to support applications that don't want to cope * with grayscale as a separate case. */ METHODDEF(void) gray_rgb_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { register JSAMPROW inptr, outptr; register JDIMENSION col; JDIMENSION num_cols = cinfo->output_width; while (--num_rows >= 0) { inptr = input_buf[0][input_row++]; outptr = *output_buf++; for (col = 0; col < num_cols; col++) { /* We can dispense with GETJSAMPLE() here */ outptr[RGB_RED] = outptr[RGB_GREEN] = outptr[RGB_BLUE] = inptr[col]; outptr += RGB_PIXELSIZE; } } } /* * Adobe-style YCCK->CMYK conversion. * We convert YCbCr to R=1-C, G=1-M, and B=1-Y using the same * conversion as above, while passing K (black) unchanged. * We assume build_ycc_rgb_table has been called. */ METHODDEF(void) ycck_cmyk_convert (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows) { my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; register int y, cb, cr; register JSAMPROW outptr; register JSAMPROW inptr0, inptr1, inptr2, inptr3; register JDIMENSION col; JDIMENSION num_cols = cinfo->output_width; /* copy these pointers into registers if possible */ register JSAMPLE * range_limit = cinfo->sample_range_limit; register int * Crrtab = cconvert->Cr_r_tab; register int * Cbbtab = cconvert->Cb_b_tab; register INT32 * Crgtab = cconvert->Cr_g_tab; register INT32 * Cbgtab = cconvert->Cb_g_tab; SHIFT_TEMPS while (--num_rows >= 0) { inptr0 = input_buf[0][input_row]; inptr1 = input_buf[1][input_row]; inptr2 = input_buf[2][input_row]; inptr3 = input_buf[3][input_row]; input_row++; outptr = *output_buf++; for (col = 0; col < num_cols; col++) { y = GETJSAMPLE(inptr0[col]); cb = GETJSAMPLE(inptr1[col]); cr = GETJSAMPLE(inptr2[col]); /* Range-limiting is essential due to noise introduced by DCT losses. */ outptr[0] = range_limit[MAXJSAMPLE - (y + Crrtab[cr])]; /* red */ outptr[1] = range_limit[MAXJSAMPLE - (y + /* green */ ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS)))]; outptr[2] = range_limit[MAXJSAMPLE - (y + Cbbtab[cb])]; /* blue */ /* K passes through unchanged */ outptr[3] = inptr3[col]; /* don't need GETJSAMPLE here */ outptr += 4; } } } /* * Empty method for start_pass. */ METHODDEF(void) start_pass_dcolor (j_decompress_ptr cinfo) { /* no work needed */ } /* * Module initialization routine for output colorspace conversion. */ GLOBAL(void) jinit_color_deconverter (j_decompress_ptr cinfo) { my_cconvert_ptr cconvert; int ci; cconvert = (my_cconvert_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_color_deconverter)); cinfo->cconvert = (struct jpeg_color_deconverter *) cconvert; cconvert->pub.start_pass = start_pass_dcolor; /* Make sure num_components agrees with jpeg_color_space */ switch (cinfo->jpeg_color_space) { case JCS_GRAYSCALE: if (cinfo->num_components != 1) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); break; case JCS_RGB: case JCS_YCbCr: if (cinfo->num_components != 3) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); break; case JCS_CMYK: case JCS_YCCK: if (cinfo->num_components != 4) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); break; default: /* JCS_UNKNOWN can be anything */ if (cinfo->num_components < 1) ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); break; } /* Set out_color_components and conversion method based on requested space. * Also clear the component_needed flags for any unused components, * so that earlier pipeline stages can avoid useless computation. */ switch (cinfo->out_color_space) { case JCS_GRAYSCALE: cinfo->out_color_components = 1; if (cinfo->jpeg_color_space == JCS_GRAYSCALE || cinfo->jpeg_color_space == JCS_YCbCr) { cconvert->pub.color_convert = grayscale_convert; /* For color->grayscale conversion, only the Y (0) component is needed */ for (ci = 1; ci < cinfo->num_components; ci++) cinfo->comp_info[ci].component_needed = FALSE; } else if (cinfo->jpeg_color_space == JCS_RGB) { cconvert->pub.color_convert = rgb_gray_convert; build_rgb_y_table(cinfo); } else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; case JCS_RGB: cinfo->out_color_components = RGB_PIXELSIZE; if (cinfo->jpeg_color_space == JCS_YCbCr) { cconvert->pub.color_convert = ycc_rgb_convert; build_ycc_rgb_table(cinfo); } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { cconvert->pub.color_convert = gray_rgb_convert; } else if (cinfo->jpeg_color_space == JCS_RGB) { cconvert->pub.color_convert = rgb_convert; } else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; case JCS_CMYK: cinfo->out_color_components = 4; if (cinfo->jpeg_color_space == JCS_YCCK) { cconvert->pub.color_convert = ycck_cmyk_convert; build_ycc_rgb_table(cinfo); } else if (cinfo->jpeg_color_space == JCS_CMYK) { cconvert->pub.color_convert = null_convert; } else ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; default: /* Permit null conversion to same output space */ if (cinfo->out_color_space == cinfo->jpeg_color_space) { cinfo->out_color_components = cinfo->num_components; cconvert->pub.color_convert = null_convert; } else /* unsupported non-null conversion */ ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); break; } if (cinfo->quantize_colors) cinfo->output_components = 1; /* single colormapped output component */ else cinfo->output_components = cinfo->out_color_components; } jpeg-8d1/makewfil.v100000644000175000017500000000216611367232726013170 0ustar billbill {4FC737F1-C7A5-4376-A066-2A32D752A2FF} cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx {93995380-89BD-4b04-88EB-625FBE52EBFB} h;hpp;hxx;hm;inl;inc;xsd {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms Header Files Header Files Source Files jpeg-8d1/jccoefct.c0000644000175000017500000004041211633110010012732 0ustar billbill/* * jccoefct.c * * Copyright (C) 1994-1997, Thomas G. Lane. * Modified 2003-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains the coefficient buffer controller for compression. * This controller is the top level of the JPEG compressor proper. * The coefficient buffer lies between forward-DCT and entropy encoding steps. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* We use a full-image coefficient buffer when doing Huffman optimization, * and also for writing multiple-scan JPEG files. In all cases, the DCT * step is run during the first pass, and subsequent passes need only read * the buffered coefficients. */ #ifdef ENTROPY_OPT_SUPPORTED #define FULL_COEF_BUFFER_SUPPORTED #else #ifdef C_MULTISCAN_FILES_SUPPORTED #define FULL_COEF_BUFFER_SUPPORTED #endif #endif /* Private buffer controller object */ typedef struct { struct jpeg_c_coef_controller pub; /* public fields */ JDIMENSION iMCU_row_num; /* iMCU row # within image */ JDIMENSION mcu_ctr; /* counts MCUs processed in current row */ int MCU_vert_offset; /* counts MCU rows within iMCU row */ int MCU_rows_per_iMCU_row; /* number of such rows needed */ /* For single-pass compression, it's sufficient to buffer just one MCU * (although this may prove a bit slow in practice). We allocate a * workspace of C_MAX_BLOCKS_IN_MCU coefficient blocks, and reuse it for each * MCU constructed and sent. (On 80x86, the workspace is FAR even though * it's not really very big; this is to keep the module interfaces unchanged * when a large coefficient buffer is necessary.) * In multi-pass modes, this array points to the current MCU's blocks * within the virtual arrays. */ JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU]; /* In multi-pass modes, we need a virtual block array for each component. */ jvirt_barray_ptr whole_image[MAX_COMPONENTS]; } my_coef_controller; typedef my_coef_controller * my_coef_ptr; /* Forward declarations */ METHODDEF(boolean) compress_data JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf)); #ifdef FULL_COEF_BUFFER_SUPPORTED METHODDEF(boolean) compress_first_pass JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf)); METHODDEF(boolean) compress_output JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf)); #endif LOCAL(void) start_iMCU_row (j_compress_ptr cinfo) /* Reset within-iMCU-row counters for a new row */ { my_coef_ptr coef = (my_coef_ptr) cinfo->coef; /* In an interleaved scan, an MCU row is the same as an iMCU row. * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows. * But at the bottom of the image, process only what's left. */ if (cinfo->comps_in_scan > 1) { coef->MCU_rows_per_iMCU_row = 1; } else { if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1)) coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor; else coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height; } coef->mcu_ctr = 0; coef->MCU_vert_offset = 0; } /* * Initialize for a processing pass. */ METHODDEF(void) start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode) { my_coef_ptr coef = (my_coef_ptr) cinfo->coef; coef->iMCU_row_num = 0; start_iMCU_row(cinfo); switch (pass_mode) { case JBUF_PASS_THRU: if (coef->whole_image[0] != NULL) ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); coef->pub.compress_data = compress_data; break; #ifdef FULL_COEF_BUFFER_SUPPORTED case JBUF_SAVE_AND_PASS: if (coef->whole_image[0] == NULL) ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); coef->pub.compress_data = compress_first_pass; break; case JBUF_CRANK_DEST: if (coef->whole_image[0] == NULL) ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); coef->pub.compress_data = compress_output; break; #endif default: ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); break; } } /* * Process some data in the single-pass case. * We process the equivalent of one fully interleaved MCU row ("iMCU" row) * per call, ie, v_samp_factor block rows for each component in the image. * Returns TRUE if the iMCU row is completed, FALSE if suspended. * * NB: input_buf contains a plane for each component in image, * which we index according to the component's SOF position. */ METHODDEF(boolean) compress_data (j_compress_ptr cinfo, JSAMPIMAGE input_buf) { my_coef_ptr coef = (my_coef_ptr) cinfo->coef; JDIMENSION MCU_col_num; /* index of current MCU within row */ JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1; JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; int blkn, bi, ci, yindex, yoffset, blockcnt; JDIMENSION ypos, xpos; jpeg_component_info *compptr; forward_DCT_ptr forward_DCT; /* Loop to write as much as one whole iMCU row */ for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; yoffset++) { for (MCU_col_num = coef->mcu_ctr; MCU_col_num <= last_MCU_col; MCU_col_num++) { /* Determine where data comes from in input_buf and do the DCT thing. * Each call on forward_DCT processes a horizontal row of DCT blocks * as wide as an MCU; we rely on having allocated the MCU_buffer[] blocks * sequentially. Dummy blocks at the right or bottom edge are filled in * specially. The data in them does not matter for image reconstruction, * so we fill them with values that will encode to the smallest amount of * data, viz: all zeroes in the AC entries, DC entries equal to previous * block's DC value. (Thanks to Thomas Kinsman for this idea.) */ blkn = 0; for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; forward_DCT = cinfo->fdct->forward_DCT[compptr->component_index]; blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width : compptr->last_col_width; xpos = MCU_col_num * compptr->MCU_sample_width; ypos = yoffset * compptr->DCT_v_scaled_size; /* ypos == (yoffset+yindex) * DCTSIZE */ for (yindex = 0; yindex < compptr->MCU_height; yindex++) { if (coef->iMCU_row_num < last_iMCU_row || yoffset+yindex < compptr->last_row_height) { (*forward_DCT) (cinfo, compptr, input_buf[compptr->component_index], coef->MCU_buffer[blkn], ypos, xpos, (JDIMENSION) blockcnt); if (blockcnt < compptr->MCU_width) { /* Create some dummy blocks at the right edge of the image. */ FMEMZERO((void FAR *) coef->MCU_buffer[blkn + blockcnt], (compptr->MCU_width - blockcnt) * SIZEOF(JBLOCK)); for (bi = blockcnt; bi < compptr->MCU_width; bi++) { coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn+bi-1][0][0]; } } } else { /* Create a row of dummy blocks at the bottom of the image. */ FMEMZERO((void FAR *) coef->MCU_buffer[blkn], compptr->MCU_width * SIZEOF(JBLOCK)); for (bi = 0; bi < compptr->MCU_width; bi++) { coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn-1][0][0]; } } blkn += compptr->MCU_width; ypos += compptr->DCT_v_scaled_size; } } /* Try to write the MCU. In event of a suspension failure, we will * re-DCT the MCU on restart (a bit inefficient, could be fixed...) */ if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) { /* Suspension forced; update state counters and exit */ coef->MCU_vert_offset = yoffset; coef->mcu_ctr = MCU_col_num; return FALSE; } } /* Completed an MCU row, but perhaps not an iMCU row */ coef->mcu_ctr = 0; } /* Completed the iMCU row, advance counters for next one */ coef->iMCU_row_num++; start_iMCU_row(cinfo); return TRUE; } #ifdef FULL_COEF_BUFFER_SUPPORTED /* * Process some data in the first pass of a multi-pass case. * We process the equivalent of one fully interleaved MCU row ("iMCU" row) * per call, ie, v_samp_factor block rows for each component in the image. * This amount of data is read from the source buffer, DCT'd and quantized, * and saved into the virtual arrays. We also generate suitable dummy blocks * as needed at the right and lower edges. (The dummy blocks are constructed * in the virtual arrays, which have been padded appropriately.) This makes * it possible for subsequent passes not to worry about real vs. dummy blocks. * * We must also emit the data to the entropy encoder. This is conveniently * done by calling compress_output() after we've loaded the current strip * of the virtual arrays. * * NB: input_buf contains a plane for each component in image. All * components are DCT'd and loaded into the virtual arrays in this pass. * However, it may be that only a subset of the components are emitted to * the entropy encoder during this first pass; be careful about looking * at the scan-dependent variables (MCU dimensions, etc). */ METHODDEF(boolean) compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf) { my_coef_ptr coef = (my_coef_ptr) cinfo->coef; JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; JDIMENSION blocks_across, MCUs_across, MCUindex; int bi, ci, h_samp_factor, block_row, block_rows, ndummy; JCOEF lastDC; jpeg_component_info *compptr; JBLOCKARRAY buffer; JBLOCKROW thisblockrow, lastblockrow; forward_DCT_ptr forward_DCT; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Align the virtual buffer for this component. */ buffer = (*cinfo->mem->access_virt_barray) ((j_common_ptr) cinfo, coef->whole_image[ci], coef->iMCU_row_num * compptr->v_samp_factor, (JDIMENSION) compptr->v_samp_factor, TRUE); /* Count non-dummy DCT block rows in this iMCU row. */ if (coef->iMCU_row_num < last_iMCU_row) block_rows = compptr->v_samp_factor; else { /* NB: can't use last_row_height here, since may not be set! */ block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor); if (block_rows == 0) block_rows = compptr->v_samp_factor; } blocks_across = compptr->width_in_blocks; h_samp_factor = compptr->h_samp_factor; /* Count number of dummy blocks to be added at the right margin. */ ndummy = (int) (blocks_across % h_samp_factor); if (ndummy > 0) ndummy = h_samp_factor - ndummy; forward_DCT = cinfo->fdct->forward_DCT[ci]; /* Perform DCT for all non-dummy blocks in this iMCU row. Each call * on forward_DCT processes a complete horizontal row of DCT blocks. */ for (block_row = 0; block_row < block_rows; block_row++) { thisblockrow = buffer[block_row]; (*forward_DCT) (cinfo, compptr, input_buf[ci], thisblockrow, (JDIMENSION) (block_row * compptr->DCT_v_scaled_size), (JDIMENSION) 0, blocks_across); if (ndummy > 0) { /* Create dummy blocks at the right edge of the image. */ thisblockrow += blocks_across; /* => first dummy block */ FMEMZERO((void FAR *) thisblockrow, ndummy * SIZEOF(JBLOCK)); lastDC = thisblockrow[-1][0]; for (bi = 0; bi < ndummy; bi++) { thisblockrow[bi][0] = lastDC; } } } /* If at end of image, create dummy block rows as needed. * The tricky part here is that within each MCU, we want the DC values * of the dummy blocks to match the last real block's DC value. * This squeezes a few more bytes out of the resulting file... */ if (coef->iMCU_row_num == last_iMCU_row) { blocks_across += ndummy; /* include lower right corner */ MCUs_across = blocks_across / h_samp_factor; for (block_row = block_rows; block_row < compptr->v_samp_factor; block_row++) { thisblockrow = buffer[block_row]; lastblockrow = buffer[block_row-1]; FMEMZERO((void FAR *) thisblockrow, (size_t) (blocks_across * SIZEOF(JBLOCK))); for (MCUindex = 0; MCUindex < MCUs_across; MCUindex++) { lastDC = lastblockrow[h_samp_factor-1][0]; for (bi = 0; bi < h_samp_factor; bi++) { thisblockrow[bi][0] = lastDC; } thisblockrow += h_samp_factor; /* advance to next MCU in row */ lastblockrow += h_samp_factor; } } } } /* NB: compress_output will increment iMCU_row_num if successful. * A suspension return will result in redoing all the work above next time. */ /* Emit data to the entropy encoder, sharing code with subsequent passes */ return compress_output(cinfo, input_buf); } /* * Process some data in subsequent passes of a multi-pass case. * We process the equivalent of one fully interleaved MCU row ("iMCU" row) * per call, ie, v_samp_factor block rows for each component in the scan. * The data is obtained from the virtual arrays and fed to the entropy coder. * Returns TRUE if the iMCU row is completed, FALSE if suspended. * * NB: input_buf is ignored; it is likely to be a NULL pointer. */ METHODDEF(boolean) compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf) { my_coef_ptr coef = (my_coef_ptr) cinfo->coef; JDIMENSION MCU_col_num; /* index of current MCU within row */ int blkn, ci, xindex, yindex, yoffset; JDIMENSION start_col; JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN]; JBLOCKROW buffer_ptr; jpeg_component_info *compptr; /* Align the virtual buffers for the components used in this scan. * NB: during first pass, this is safe only because the buffers will * already be aligned properly, so jmemmgr.c won't need to do any I/O. */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; buffer[ci] = (*cinfo->mem->access_virt_barray) ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index], coef->iMCU_row_num * compptr->v_samp_factor, (JDIMENSION) compptr->v_samp_factor, FALSE); } /* Loop to process one whole iMCU row */ for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; yoffset++) { for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row; MCU_col_num++) { /* Construct list of pointers to DCT blocks belonging to this MCU */ blkn = 0; /* index of current DCT block within MCU */ for (ci = 0; ci < cinfo->comps_in_scan; ci++) { compptr = cinfo->cur_comp_info[ci]; start_col = MCU_col_num * compptr->MCU_width; for (yindex = 0; yindex < compptr->MCU_height; yindex++) { buffer_ptr = buffer[ci][yindex+yoffset] + start_col; for (xindex = 0; xindex < compptr->MCU_width; xindex++) { coef->MCU_buffer[blkn++] = buffer_ptr++; } } } /* Try to write the MCU. */ if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) { /* Suspension forced; update state counters and exit */ coef->MCU_vert_offset = yoffset; coef->mcu_ctr = MCU_col_num; return FALSE; } } /* Completed an MCU row, but perhaps not an iMCU row */ coef->mcu_ctr = 0; } /* Completed the iMCU row, advance counters for next one */ coef->iMCU_row_num++; start_iMCU_row(cinfo); return TRUE; } #endif /* FULL_COEF_BUFFER_SUPPORTED */ /* * Initialize coefficient buffer controller. */ GLOBAL(void) jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer) { my_coef_ptr coef; coef = (my_coef_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_coef_controller)); cinfo->coef = (struct jpeg_c_coef_controller *) coef; coef->pub.start_pass = start_pass_coef; /* Create the coefficient buffer. */ if (need_full_buffer) { #ifdef FULL_COEF_BUFFER_SUPPORTED /* Allocate a full-image virtual array for each component, */ /* padded to a multiple of samp_factor DCT blocks in each direction. */ int ci; jpeg_component_info *compptr; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { coef->whole_image[ci] = (*cinfo->mem->request_virt_barray) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, (JDIMENSION) jround_up((long) compptr->width_in_blocks, (long) compptr->h_samp_factor), (JDIMENSION) jround_up((long) compptr->height_in_blocks, (long) compptr->v_samp_factor), (JDIMENSION) compptr->v_samp_factor); } #else ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); #endif } else { /* We only need a single-MCU buffer. */ JBLOCKROW buffer; int i; buffer = (JBLOCKROW) (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) { coef->MCU_buffer[i] = buffer + i; } coef->whole_image[0] = NULL; /* flag for no virtual arrays */ } } jpeg-8d1/jcdctmgr.c0000644000175000017500000003663510400064626012777 0ustar billbill/* * jcdctmgr.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains the forward-DCT management logic. * This code selects a particular DCT implementation to be used, * and it performs related housekeeping chores including coefficient * quantization. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ /* Private subobject for this module */ typedef struct { struct jpeg_forward_dct pub; /* public fields */ /* Pointer to the DCT routine actually in use */ forward_DCT_method_ptr do_dct[MAX_COMPONENTS]; /* The actual post-DCT divisors --- not identical to the quant table * entries, because of scaling (especially for an unnormalized DCT). * Each table is given in normal array order. */ DCTELEM * divisors[NUM_QUANT_TBLS]; #ifdef DCT_FLOAT_SUPPORTED /* Same as above for the floating-point case. */ float_DCT_method_ptr do_float_dct[MAX_COMPONENTS]; FAST_FLOAT * float_divisors[NUM_QUANT_TBLS]; #endif } my_fdct_controller; typedef my_fdct_controller * my_fdct_ptr; /* The current scaled-DCT routines require ISLOW-style divisor tables, * so be sure to compile that code if either ISLOW or SCALING is requested. */ #ifdef DCT_ISLOW_SUPPORTED #define PROVIDE_ISLOW_TABLES #else #ifdef DCT_SCALING_SUPPORTED #define PROVIDE_ISLOW_TABLES #endif #endif /* * Perform forward DCT on one or more blocks of a component. * * The input samples are taken from the sample_data[] array starting at * position start_row/start_col, and moving to the right for any additional * blocks. The quantized coefficients are returned in coef_blocks[]. */ METHODDEF(void) forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks) /* This version is used for integer DCT implementations. */ { /* This routine is heavily used, so it's worth coding it tightly. */ my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct; forward_DCT_method_ptr do_dct = fdct->do_dct[compptr->component_index]; DCTELEM * divisors = fdct->divisors[compptr->quant_tbl_no]; DCTELEM workspace[DCTSIZE2]; /* work area for FDCT subroutine */ JDIMENSION bi; sample_data += start_row; /* fold in the vertical offset once */ for (bi = 0; bi < num_blocks; bi++, start_col += compptr->DCT_h_scaled_size) { /* Perform the DCT */ (*do_dct) (workspace, sample_data, start_col); /* Quantize/descale the coefficients, and store into coef_blocks[] */ { register DCTELEM temp, qval; register int i; register JCOEFPTR output_ptr = coef_blocks[bi]; for (i = 0; i < DCTSIZE2; i++) { qval = divisors[i]; temp = workspace[i]; /* Divide the coefficient value by qval, ensuring proper rounding. * Since C does not specify the direction of rounding for negative * quotients, we have to force the dividend positive for portability. * * In most files, at least half of the output values will be zero * (at default quantization settings, more like three-quarters...) * so we should ensure that this case is fast. On many machines, * a comparison is enough cheaper than a divide to make a special test * a win. Since both inputs will be nonnegative, we need only test * for a < b to discover whether a/b is 0. * If your machine's division is fast enough, define FAST_DIVIDE. */ #ifdef FAST_DIVIDE #define DIVIDE_BY(a,b) a /= b #else #define DIVIDE_BY(a,b) if (a >= b) a /= b; else a = 0 #endif if (temp < 0) { temp = -temp; temp += qval>>1; /* for rounding */ DIVIDE_BY(temp, qval); temp = -temp; } else { temp += qval>>1; /* for rounding */ DIVIDE_BY(temp, qval); } output_ptr[i] = (JCOEF) temp; } } } } #ifdef DCT_FLOAT_SUPPORTED METHODDEF(void) forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks) /* This version is used for floating-point DCT implementations. */ { /* This routine is heavily used, so it's worth coding it tightly. */ my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct; float_DCT_method_ptr do_dct = fdct->do_float_dct[compptr->component_index]; FAST_FLOAT * divisors = fdct->float_divisors[compptr->quant_tbl_no]; FAST_FLOAT workspace[DCTSIZE2]; /* work area for FDCT subroutine */ JDIMENSION bi; sample_data += start_row; /* fold in the vertical offset once */ for (bi = 0; bi < num_blocks; bi++, start_col += compptr->DCT_h_scaled_size) { /* Perform the DCT */ (*do_dct) (workspace, sample_data, start_col); /* Quantize/descale the coefficients, and store into coef_blocks[] */ { register FAST_FLOAT temp; register int i; register JCOEFPTR output_ptr = coef_blocks[bi]; for (i = 0; i < DCTSIZE2; i++) { /* Apply the quantization and scaling factor */ temp = workspace[i] * divisors[i]; /* Round to nearest integer. * Since C does not specify the direction of rounding for negative * quotients, we have to force the dividend positive for portability. * The maximum coefficient size is +-16K (for 12-bit data), so this * code should work for either 16-bit or 32-bit ints. */ output_ptr[i] = (JCOEF) ((int) (temp + (FAST_FLOAT) 16384.5) - 16384); } } } } #endif /* DCT_FLOAT_SUPPORTED */ /* * Initialize for a processing pass. * Verify that all referenced Q-tables are present, and set up * the divisor table for each one. * In the current implementation, DCT of all components is done during * the first pass, even if only some components will be output in the * first scan. Hence all components should be examined here. */ METHODDEF(void) start_pass_fdctmgr (j_compress_ptr cinfo) { my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct; int ci, qtblno, i; jpeg_component_info *compptr; int method = 0; JQUANT_TBL * qtbl; DCTELEM * dtbl; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Select the proper DCT routine for this component's scaling */ switch ((compptr->DCT_h_scaled_size << 8) + compptr->DCT_v_scaled_size) { #ifdef DCT_SCALING_SUPPORTED case ((1 << 8) + 1): fdct->do_dct[ci] = jpeg_fdct_1x1; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((2 << 8) + 2): fdct->do_dct[ci] = jpeg_fdct_2x2; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((3 << 8) + 3): fdct->do_dct[ci] = jpeg_fdct_3x3; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((4 << 8) + 4): fdct->do_dct[ci] = jpeg_fdct_4x4; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((5 << 8) + 5): fdct->do_dct[ci] = jpeg_fdct_5x5; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((6 << 8) + 6): fdct->do_dct[ci] = jpeg_fdct_6x6; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((7 << 8) + 7): fdct->do_dct[ci] = jpeg_fdct_7x7; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((9 << 8) + 9): fdct->do_dct[ci] = jpeg_fdct_9x9; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((10 << 8) + 10): fdct->do_dct[ci] = jpeg_fdct_10x10; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((11 << 8) + 11): fdct->do_dct[ci] = jpeg_fdct_11x11; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((12 << 8) + 12): fdct->do_dct[ci] = jpeg_fdct_12x12; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((13 << 8) + 13): fdct->do_dct[ci] = jpeg_fdct_13x13; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((14 << 8) + 14): fdct->do_dct[ci] = jpeg_fdct_14x14; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((15 << 8) + 15): fdct->do_dct[ci] = jpeg_fdct_15x15; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((16 << 8) + 16): fdct->do_dct[ci] = jpeg_fdct_16x16; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((16 << 8) + 8): fdct->do_dct[ci] = jpeg_fdct_16x8; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((14 << 8) + 7): fdct->do_dct[ci] = jpeg_fdct_14x7; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((12 << 8) + 6): fdct->do_dct[ci] = jpeg_fdct_12x6; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((10 << 8) + 5): fdct->do_dct[ci] = jpeg_fdct_10x5; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((8 << 8) + 4): fdct->do_dct[ci] = jpeg_fdct_8x4; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((6 << 8) + 3): fdct->do_dct[ci] = jpeg_fdct_6x3; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((4 << 8) + 2): fdct->do_dct[ci] = jpeg_fdct_4x2; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((2 << 8) + 1): fdct->do_dct[ci] = jpeg_fdct_2x1; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((8 << 8) + 16): fdct->do_dct[ci] = jpeg_fdct_8x16; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((7 << 8) + 14): fdct->do_dct[ci] = jpeg_fdct_7x14; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((6 << 8) + 12): fdct->do_dct[ci] = jpeg_fdct_6x12; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((5 << 8) + 10): fdct->do_dct[ci] = jpeg_fdct_5x10; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((4 << 8) + 8): fdct->do_dct[ci] = jpeg_fdct_4x8; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((3 << 8) + 6): fdct->do_dct[ci] = jpeg_fdct_3x6; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((2 << 8) + 4): fdct->do_dct[ci] = jpeg_fdct_2x4; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; case ((1 << 8) + 2): fdct->do_dct[ci] = jpeg_fdct_1x2; method = JDCT_ISLOW; /* jfdctint uses islow-style table */ break; #endif case ((DCTSIZE << 8) + DCTSIZE): switch (cinfo->dct_method) { #ifdef DCT_ISLOW_SUPPORTED case JDCT_ISLOW: fdct->do_dct[ci] = jpeg_fdct_islow; method = JDCT_ISLOW; break; #endif #ifdef DCT_IFAST_SUPPORTED case JDCT_IFAST: fdct->do_dct[ci] = jpeg_fdct_ifast; method = JDCT_IFAST; break; #endif #ifdef DCT_FLOAT_SUPPORTED case JDCT_FLOAT: fdct->do_float_dct[ci] = jpeg_fdct_float; method = JDCT_FLOAT; break; #endif default: ERREXIT(cinfo, JERR_NOT_COMPILED); break; } break; default: ERREXIT2(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_h_scaled_size, compptr->DCT_v_scaled_size); break; } qtblno = compptr->quant_tbl_no; /* Make sure specified quantization table is present */ if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS || cinfo->quant_tbl_ptrs[qtblno] == NULL) ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno); qtbl = cinfo->quant_tbl_ptrs[qtblno]; /* Compute divisors for this quant table */ /* We may do this more than once for same table, but it's not a big deal */ switch (method) { #ifdef PROVIDE_ISLOW_TABLES case JDCT_ISLOW: /* For LL&M IDCT method, divisors are equal to raw quantization * coefficients multiplied by 8 (to counteract scaling). */ if (fdct->divisors[qtblno] == NULL) { fdct->divisors[qtblno] = (DCTELEM *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, DCTSIZE2 * SIZEOF(DCTELEM)); } dtbl = fdct->divisors[qtblno]; for (i = 0; i < DCTSIZE2; i++) { dtbl[i] = ((DCTELEM) qtbl->quantval[i]) << 3; } fdct->pub.forward_DCT[ci] = forward_DCT; break; #endif #ifdef DCT_IFAST_SUPPORTED case JDCT_IFAST: { /* For AA&N IDCT method, divisors are equal to quantization * coefficients scaled by scalefactor[row]*scalefactor[col], where * scalefactor[0] = 1 * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 * We apply a further scale factor of 8. */ #define CONST_BITS 14 static const INT16 aanscales[DCTSIZE2] = { /* precomputed values scaled up by 14 bits */ 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446, 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247 }; SHIFT_TEMPS if (fdct->divisors[qtblno] == NULL) { fdct->divisors[qtblno] = (DCTELEM *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, DCTSIZE2 * SIZEOF(DCTELEM)); } dtbl = fdct->divisors[qtblno]; for (i = 0; i < DCTSIZE2; i++) { dtbl[i] = (DCTELEM) DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i], (INT32) aanscales[i]), CONST_BITS-3); } } fdct->pub.forward_DCT[ci] = forward_DCT; break; #endif #ifdef DCT_FLOAT_SUPPORTED case JDCT_FLOAT: { /* For float AA&N IDCT method, divisors are equal to quantization * coefficients scaled by scalefactor[row]*scalefactor[col], where * scalefactor[0] = 1 * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 * We apply a further scale factor of 8. * What's actually stored is 1/divisor so that the inner loop can * use a multiplication rather than a division. */ FAST_FLOAT * fdtbl; int row, col; static const double aanscalefactor[DCTSIZE] = { 1.0, 1.387039845, 1.306562965, 1.175875602, 1.0, 0.785694958, 0.541196100, 0.275899379 }; if (fdct->float_divisors[qtblno] == NULL) { fdct->float_divisors[qtblno] = (FAST_FLOAT *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, DCTSIZE2 * SIZEOF(FAST_FLOAT)); } fdtbl = fdct->float_divisors[qtblno]; i = 0; for (row = 0; row < DCTSIZE; row++) { for (col = 0; col < DCTSIZE; col++) { fdtbl[i] = (FAST_FLOAT) (1.0 / (((double) qtbl->quantval[i] * aanscalefactor[row] * aanscalefactor[col] * 8.0))); i++; } } } fdct->pub.forward_DCT[ci] = forward_DCT_float; break; #endif default: ERREXIT(cinfo, JERR_NOT_COMPILED); break; } } } /* * Initialize FDCT manager. */ GLOBAL(void) jinit_forward_dct (j_compress_ptr cinfo) { my_fdct_ptr fdct; int i; fdct = (my_fdct_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_fdct_controller)); cinfo->fdct = (struct jpeg_forward_dct *) fdct; fdct->pub.start_pass = start_pass_fdctmgr; /* Mark divisor tables unallocated */ for (i = 0; i < NUM_QUANT_TBLS; i++) { fdct->divisors[i] = NULL; #ifdef DCT_FLOAT_SUPPORTED fdct->float_divisors[i] = NULL; #endif } } jpeg-8d1/jconfig.vc0000644000175000017500000000246511161225544013004 0ustar billbill/* jconfig.vc --- jconfig.h for Microsoft Visual C++ on Windows 95 or NT. */ /* see jconfig.txt for explanations */ #define HAVE_PROTOTYPES #define HAVE_UNSIGNED_CHAR #define HAVE_UNSIGNED_SHORT /* #define void char */ /* #define const */ #undef CHAR_IS_UNSIGNED #define HAVE_STDDEF_H #define HAVE_STDLIB_H #undef NEED_BSD_STRINGS #undef NEED_SYS_TYPES_H #undef NEED_FAR_POINTERS /* we presume a 32-bit flat memory model */ #undef NEED_SHORT_EXTERNAL_NAMES #undef INCOMPLETE_TYPES_BROKEN /* Define "boolean" as unsigned char, not int, per Windows custom */ #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ typedef unsigned char boolean; #endif #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ #ifdef JPEG_INTERNALS #undef RIGHT_SHIFT_IS_UNSIGNED #endif /* JPEG_INTERNALS */ #ifdef JPEG_CJPEG_DJPEG #define BMP_SUPPORTED /* BMP image file format */ #define GIF_SUPPORTED /* GIF image file format */ #define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ #undef RLE_SUPPORTED /* Utah RLE image file format */ #define TARGA_SUPPORTED /* Targa image file format */ #define TWO_FILE_COMMANDLINE /* optional */ #define USE_SETMODE /* Microsoft has setmode() */ #undef NEED_SIGNAL_CATCHER #undef DONT_USE_B_MODE #undef PROGRESS_REPORT /* optional */ #endif /* JPEG_CJPEG_DJPEG */ jpeg-8d1/jfdctint.c0000644000175000017500000046572611213264450013016 0ustar billbill/* * jfdctint.c * * Copyright (C) 1991-1996, Thomas G. Lane. * Modification developed 2003-2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains a slow-but-accurate integer implementation of the * forward DCT (Discrete Cosine Transform). * * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT * on each column. Direct algorithms are also available, but they are * much more complex and seem not to be any faster when reduced to code. * * This implementation is based on an algorithm described in * C. Loeffler, A. Ligtenberg and G. Moschytz, "Practical Fast 1-D DCT * Algorithms with 11 Multiplications", Proc. Int'l. Conf. on Acoustics, * Speech, and Signal Processing 1989 (ICASSP '89), pp. 988-991. * The primary algorithm described there uses 11 multiplies and 29 adds. * We use their alternate method with 12 multiplies and 32 adds. * The advantage of this method is that no data path contains more than one * multiplication; this allows a very simple and accurate implementation in * scaled fixed-point arithmetic, with a minimal number of shifts. * * We also provide FDCT routines with various input sample block sizes for * direct resolution reduction or enlargement and for direct resolving the * common 2x1 and 1x2 subsampling cases without additional resampling: NxN * (N=1...16), 2NxN, and Nx2N (N=1...8) pixels for one 8x8 output DCT block. * * For N<8 we fill the remaining block coefficients with zero. * For N>8 we apply a partial N-point FDCT on the input samples, computing * just the lower 8 frequency coefficients and discarding the rest. * * We must scale the output coefficients of the N-point FDCT appropriately * to the standard 8-point FDCT level by 8/N per 1-D pass. This scaling * is folded into the constant multipliers (pass 2) and/or final/initial * shifting. * * CAUTION: We rely on the FIX() macro except for the N=1,2,4,8 cases * since there would be too many additional constants to pre-calculate. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jdct.h" /* Private declarations for DCT subsystem */ #ifdef DCT_ISLOW_SUPPORTED /* * This module is specialized to the case DCTSIZE = 8. */ #if DCTSIZE != 8 Sorry, this code only copes with 8x8 DCT blocks. /* deliberate syntax err */ #endif /* * The poop on this scaling stuff is as follows: * * Each 1-D DCT step produces outputs which are a factor of sqrt(N) * larger than the true DCT outputs. The final outputs are therefore * a factor of N larger than desired; since N=8 this can be cured by * a simple right shift at the end of the algorithm. The advantage of * this arrangement is that we save two multiplications per 1-D DCT, * because the y0 and y4 outputs need not be divided by sqrt(N). * In the IJG code, this factor of 8 is removed by the quantization step * (in jcdctmgr.c), NOT in this module. * * We have to do addition and subtraction of the integer inputs, which * is no problem, and multiplication by fractional constants, which is * a problem to do in integer arithmetic. We multiply all the constants * by CONST_SCALE and convert them to integer constants (thus retaining * CONST_BITS bits of precision in the constants). After doing a * multiplication we have to divide the product by CONST_SCALE, with proper * rounding, to produce the correct output. This division can be done * cheaply as a right shift of CONST_BITS bits. We postpone shifting * as long as possible so that partial sums can be added together with * full fractional precision. * * The outputs of the first pass are scaled up by PASS1_BITS bits so that * they are represented to better-than-integral precision. These outputs * require BITS_IN_JSAMPLE + PASS1_BITS + 3 bits; this fits in a 16-bit word * with the recommended scaling. (For 12-bit sample data, the intermediate * array is INT32 anyway.) * * To avoid overflow of the 32-bit intermediate results in pass 2, we must * have BITS_IN_JSAMPLE + CONST_BITS + PASS1_BITS <= 26. Error analysis * shows that the values given below are the most effective. */ #if BITS_IN_JSAMPLE == 8 #define CONST_BITS 13 #define PASS1_BITS 2 #else #define CONST_BITS 13 #define PASS1_BITS 1 /* lose a little precision to avoid overflow */ #endif /* Some C compilers fail to reduce "FIX(constant)" at compile time, thus * causing a lot of useless floating-point operations at run time. * To get around this we use the following pre-calculated constants. * If you change CONST_BITS you may want to add appropriate values. * (With a reasonable C compiler, you can just rely on the FIX() macro...) */ #if CONST_BITS == 13 #define FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */ #define FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */ #define FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */ #define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */ #define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */ #define FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */ #define FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */ #define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */ #define FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */ #define FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */ #define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */ #define FIX_3_072711026 ((INT32) 25172) /* FIX(3.072711026) */ #else #define FIX_0_298631336 FIX(0.298631336) #define FIX_0_390180644 FIX(0.390180644) #define FIX_0_541196100 FIX(0.541196100) #define FIX_0_765366865 FIX(0.765366865) #define FIX_0_899976223 FIX(0.899976223) #define FIX_1_175875602 FIX(1.175875602) #define FIX_1_501321110 FIX(1.501321110) #define FIX_1_847759065 FIX(1.847759065) #define FIX_1_961570560 FIX(1.961570560) #define FIX_2_053119869 FIX(2.053119869) #define FIX_2_562915447 FIX(2.562915447) #define FIX_3_072711026 FIX(3.072711026) #endif /* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. * For 8-bit samples with the recommended scaling, all the variable * and constant values involved are no more than 16 bits wide, so a * 16x16->32 bit multiply can be used instead of a full 32x32 multiply. * For 12-bit samples, a full 32-bit multiplication will be needed. */ #if BITS_IN_JSAMPLE == 8 #define MULTIPLY(var,const) MULTIPLY16C16(var,const) #else #define MULTIPLY(var,const) ((var) * (const)) #endif /* * Perform the forward DCT on one block of samples. */ GLOBAL(void) jpeg_fdct_islow (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ dataptr = data; for (ctr = 0; ctr < DCTSIZE; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part per LL&M figure 1 --- note that published figure is faulty; * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[6]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[5]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[4]); tmp10 = tmp0 + tmp3; tmp12 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp13 = tmp1 - tmp2; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[7]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[6]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << PASS1_BITS); dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS); z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); dataptr[2] = (DCTELEM) RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS-PASS1_BITS); /* Odd part per figure 8 --- note paper omits factor of sqrt(2). * cK represents sqrt(2) * cos(K*pi/16). * i0..i3 in the paper are tmp0..tmp3 here. */ tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp0 + tmp2; tmp13 = tmp1 + tmp3; z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602); /* c3 */ /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-1); tmp0 = MULTIPLY(tmp0, FIX_1_501321110); /* c1+c3-c5-c7 */ tmp1 = MULTIPLY(tmp1, FIX_3_072711026); /* c1+c3+c5-c7 */ tmp2 = MULTIPLY(tmp2, FIX_2_053119869); /* c1+c3-c5+c7 */ tmp3 = MULTIPLY(tmp3, FIX_0_298631336); /* -c1+c3+c5-c7 */ tmp10 = MULTIPLY(tmp10, - FIX_0_899976223); /* c7-c3 */ tmp11 = MULTIPLY(tmp11, - FIX_2_562915447); /* -c1-c3 */ tmp12 = MULTIPLY(tmp12, - FIX_0_390180644); /* c5-c3 */ tmp13 = MULTIPLY(tmp13, - FIX_1_961570560); /* -c3-c5 */ tmp12 += z1; tmp13 += z1; dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS-PASS1_BITS); dataptr[7] = (DCTELEM) RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS-PASS1_BITS); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part per LL&M figure 1 --- note that published figure is faulty; * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; /* Add fudge factor here for final descale. */ tmp10 = tmp0 + tmp3 + (ONE << (PASS1_BITS-1)); tmp12 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp13 = tmp1 - tmp2; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp10 + tmp11, PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) RIGHT_SHIFT(tmp10 - tmp11, PASS1_BITS); z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS+PASS1_BITS-1); dataptr[DCTSIZE*2] = (DCTELEM) RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*6] = (DCTELEM) RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS+PASS1_BITS); /* Odd part per figure 8 --- note paper omits factor of sqrt(2). * cK represents sqrt(2) * cos(K*pi/16). * i0..i3 in the paper are tmp0..tmp3 here. */ tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp0 + tmp2; tmp13 = tmp1 + tmp3; z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602); /* c3 */ /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS+PASS1_BITS-1); tmp0 = MULTIPLY(tmp0, FIX_1_501321110); /* c1+c3-c5-c7 */ tmp1 = MULTIPLY(tmp1, FIX_3_072711026); /* c1+c3+c5-c7 */ tmp2 = MULTIPLY(tmp2, FIX_2_053119869); /* c1+c3-c5+c7 */ tmp3 = MULTIPLY(tmp3, FIX_0_298631336); /* -c1+c3+c5-c7 */ tmp10 = MULTIPLY(tmp10, - FIX_0_899976223); /* c7-c3 */ tmp11 = MULTIPLY(tmp11, - FIX_2_562915447); /* -c1-c3 */ tmp12 = MULTIPLY(tmp12, - FIX_0_390180644); /* c5-c3 */ tmp13 = MULTIPLY(tmp13, - FIX_1_961570560); /* -c3-c5 */ tmp12 += z1; tmp13 += z1; dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*5] = (DCTELEM) RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*7] = (DCTELEM) RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } #ifdef DCT_SCALING_SUPPORTED /* * Perform the forward DCT on a 7x7 sample block. */ GLOBAL(void) jpeg_fdct_7x7 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12; INT32 z1, z2, z3; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* cK represents sqrt(2) * cos(K*pi/14). */ dataptr = data; for (ctr = 0; ctr < 7; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[6]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[5]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[4]); tmp3 = GETJSAMPLE(elemptr[3]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[6]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[5]); tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[4]); z1 = tmp0 + tmp2; /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((z1 + tmp1 + tmp3 - 7 * CENTERJSAMPLE) << PASS1_BITS); tmp3 += tmp3; z1 -= tmp3; z1 -= tmp3; z1 = MULTIPLY(z1, FIX(0.353553391)); /* (c2+c6-c4)/2 */ z2 = MULTIPLY(tmp0 - tmp2, FIX(0.920609002)); /* (c2+c4-c6)/2 */ z3 = MULTIPLY(tmp1 - tmp2, FIX(0.314692123)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(z1 + z2 + z3, CONST_BITS-PASS1_BITS); z1 -= z2; z2 = MULTIPLY(tmp0 - tmp1, FIX(0.881747734)); /* c4 */ dataptr[4] = (DCTELEM) DESCALE(z2 + z3 - MULTIPLY(tmp1 - tmp3, FIX(0.707106781)), /* c2+c6-c4 */ CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(z1 + z2, CONST_BITS-PASS1_BITS); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(0.935414347)); /* (c3+c1-c5)/2 */ tmp2 = MULTIPLY(tmp10 - tmp11, FIX(0.170262339)); /* (c3+c5-c1)/2 */ tmp0 = tmp1 - tmp2; tmp1 += tmp2; tmp2 = MULTIPLY(tmp11 + tmp12, - FIX(1.378756276)); /* -c1 */ tmp1 += tmp2; tmp3 = MULTIPLY(tmp10 + tmp12, FIX(0.613604268)); /* c5 */ tmp0 += tmp3; tmp2 += tmp3 + MULTIPLY(tmp12, FIX(1.870828693)); /* c3+c1-c5 */ dataptr[1] = (DCTELEM) DESCALE(tmp0, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp1, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp2, CONST_BITS-PASS1_BITS); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/7)**2 = 64/49, which we fold * into the constant multipliers: * cK now represents sqrt(2) * cos(K*pi/14) * 64/49. */ dataptr = data; for (ctr = 0; ctr < 7; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*6]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*5]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*4]; tmp3 = dataptr[DCTSIZE*3]; tmp10 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*6]; tmp11 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*5]; tmp12 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*4]; z1 = tmp0 + tmp2; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(z1 + tmp1 + tmp3, FIX(1.306122449)), /* 64/49 */ CONST_BITS+PASS1_BITS); tmp3 += tmp3; z1 -= tmp3; z1 -= tmp3; z1 = MULTIPLY(z1, FIX(0.461784020)); /* (c2+c6-c4)/2 */ z2 = MULTIPLY(tmp0 - tmp2, FIX(1.202428084)); /* (c2+c4-c6)/2 */ z3 = MULTIPLY(tmp1 - tmp2, FIX(0.411026446)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + z2 + z3, CONST_BITS+PASS1_BITS); z1 -= z2; z2 = MULTIPLY(tmp0 - tmp1, FIX(1.151670509)); /* c4 */ dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(z2 + z3 - MULTIPLY(tmp1 - tmp3, FIX(0.923568041)), /* c2+c6-c4 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + z2, CONST_BITS+PASS1_BITS); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(1.221765677)); /* (c3+c1-c5)/2 */ tmp2 = MULTIPLY(tmp10 - tmp11, FIX(0.222383464)); /* (c3+c5-c1)/2 */ tmp0 = tmp1 - tmp2; tmp1 += tmp2; tmp2 = MULTIPLY(tmp11 + tmp12, - FIX(1.800824523)); /* -c1 */ tmp1 += tmp2; tmp3 = MULTIPLY(tmp10 + tmp12, FIX(0.801442310)); /* c5 */ tmp0 += tmp3; tmp2 += tmp3 + MULTIPLY(tmp12, FIX(2.443531355)); /* c3+c1-c5 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2, CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 6x6 sample block. */ GLOBAL(void) jpeg_fdct_6x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2; INT32 tmp10, tmp11, tmp12; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* cK represents sqrt(2) * cos(K*pi/12). */ dataptr = data; for (ctr = 0; ctr < 6; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[5]); tmp11 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[4]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[3]); tmp10 = tmp0 + tmp2; tmp12 = tmp0 - tmp2; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[5]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[4]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[3]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 6 * CENTERJSAMPLE) << PASS1_BITS); dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp12, FIX(1.224744871)), /* c2 */ CONST_BITS-PASS1_BITS); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp11, FIX(0.707106781)), /* c4 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp10 = DESCALE(MULTIPLY(tmp0 + tmp2, FIX(0.366025404)), /* c5 */ CONST_BITS-PASS1_BITS); dataptr[1] = (DCTELEM) (tmp10 + ((tmp0 + tmp1) << PASS1_BITS)); dataptr[3] = (DCTELEM) ((tmp0 - tmp1 - tmp2) << PASS1_BITS); dataptr[5] = (DCTELEM) (tmp10 + ((tmp2 - tmp1) << PASS1_BITS)); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/6)**2 = 16/9, which we fold * into the constant multipliers: * cK now represents sqrt(2) * cos(K*pi/12) * 16/9. */ dataptr = data; for (ctr = 0; ctr < 6; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*5]; tmp11 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*3]; tmp10 = tmp0 + tmp2; tmp12 = tmp0 - tmp2; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*3]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp12, FIX(2.177324216)), /* c2 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp11, FIX(1.257078722)), /* c4 */ CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp2, FIX(0.650711829)); /* c5 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0 + tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp2, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp2 - tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 5x5 sample block. */ GLOBAL(void) jpeg_fdct_5x5 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2; INT32 tmp10, tmp11; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We scale the results further by 2 as part of output adaption */ /* scaling for different DCT size. */ /* cK represents sqrt(2) * cos(K*pi/10). */ dataptr = data; for (ctr = 0; ctr < 5; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[4]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[3]); tmp2 = GETJSAMPLE(elemptr[2]); tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[4]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[3]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp2 - 5 * CENTERJSAMPLE) << (PASS1_BITS+1)); tmp11 = MULTIPLY(tmp11, FIX(0.790569415)); /* (c2+c4)/2 */ tmp10 -= tmp2 << 2; tmp10 = MULTIPLY(tmp10, FIX(0.353553391)); /* (c2-c4)/2 */ dataptr[2] = (DCTELEM) DESCALE(tmp11 + tmp10, CONST_BITS-PASS1_BITS-1); dataptr[4] = (DCTELEM) DESCALE(tmp11 - tmp10, CONST_BITS-PASS1_BITS-1); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp1, FIX(0.831253876)); /* c3 */ dataptr[1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0, FIX(0.513743148)), /* c1-c3 */ CONST_BITS-PASS1_BITS-1); dataptr[3] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp1, FIX(2.176250899)), /* c1+c3 */ CONST_BITS-PASS1_BITS-1); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/5)**2 = 64/25, which we partially * fold into the constant multipliers (other part was done in pass 1): * cK now represents sqrt(2) * cos(K*pi/10) * 32/25. */ dataptr = data; for (ctr = 0; ctr < 5; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*4]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*3]; tmp2 = dataptr[DCTSIZE*2]; tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*4]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*3]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp2, FIX(1.28)), /* 32/25 */ CONST_BITS+PASS1_BITS); tmp11 = MULTIPLY(tmp11, FIX(1.011928851)); /* (c2+c4)/2 */ tmp10 -= tmp2 << 2; tmp10 = MULTIPLY(tmp10, FIX(0.452548340)); /* (c2-c4)/2 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp11 + tmp10, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp11 - tmp10, CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp1, FIX(1.064004961)); /* c3 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0, FIX(0.657591230)), /* c1-c3 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp1, FIX(2.785601151)), /* c1+c3 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 4x4 sample block. */ GLOBAL(void) jpeg_fdct_4x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1; INT32 tmp10, tmp11; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We must also scale the output by (8/4)**2 = 2**2, which we add here. */ /* cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT]. */ dataptr = data; for (ctr = 0; ctr < 4; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[3]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[2]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[3]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[2]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 4 * CENTERJSAMPLE) << (PASS1_BITS+2)); dataptr[2] = (DCTELEM) ((tmp0 - tmp1) << (PASS1_BITS+2)); /* Odd part */ tmp0 = MULTIPLY(tmp10 + tmp11, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-3); dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0 + MULTIPLY(tmp10, FIX_0_765366865), /* c2-c6 */ CONST_BITS-PASS1_BITS-2); dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp0 - MULTIPLY(tmp11, FIX_1_847759065), /* c2+c6 */ CONST_BITS-PASS1_BITS-2); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. */ dataptr = data; for (ctr = 0; ctr < 4; ctr++) { /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*3] + (ONE << (PASS1_BITS-1)); tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*2]; tmp10 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*3]; tmp11 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*2]; dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp1, PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) RIGHT_SHIFT(tmp0 - tmp1, PASS1_BITS); /* Odd part */ tmp0 = MULTIPLY(tmp10 + tmp11, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS+PASS1_BITS-1); dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0 + MULTIPLY(tmp10, FIX_0_765366865), /* c2-c6 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp0 - MULTIPLY(tmp11, FIX_1_847759065), /* c2+c6 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 3x3 sample block. */ GLOBAL(void) jpeg_fdct_3x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We scale the results further by 2**2 as part of output adaption */ /* scaling for different DCT size. */ /* cK represents sqrt(2) * cos(K*pi/6). */ dataptr = data; for (ctr = 0; ctr < 3; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[2]); tmp1 = GETJSAMPLE(elemptr[1]); tmp2 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[2]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 3 * CENTERJSAMPLE) << (PASS1_BITS+2)); dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp1, FIX(0.707106781)), /* c2 */ CONST_BITS-PASS1_BITS-2); /* Odd part */ dataptr[1] = (DCTELEM) DESCALE(MULTIPLY(tmp2, FIX(1.224744871)), /* c1 */ CONST_BITS-PASS1_BITS-2); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/3)**2 = 64/9, which we partially * fold into the constant multipliers (other part was done in pass 1): * cK now represents sqrt(2) * cos(K*pi/6) * 16/9. */ dataptr = data; for (ctr = 0; ctr < 3; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*2]; tmp1 = dataptr[DCTSIZE*1]; tmp2 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*2]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp0 + tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp1, FIX(1.257078722)), /* c2 */ CONST_BITS+PASS1_BITS); /* Odd part */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(MULTIPLY(tmp2, FIX(2.177324216)), /* c1 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 2x2 sample block. */ GLOBAL(void) jpeg_fdct_2x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3; JSAMPROW elemptr; /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT. */ /* Row 0 */ elemptr = sample_data[0] + start_col; tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[1]); tmp1 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[1]); /* Row 1 */ elemptr = sample_data[1] + start_col; tmp2 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[1]); tmp3 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[1]); /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/2)**2 = 2**4. */ /* Column 0 */ /* Apply unsigned->signed conversion */ data[DCTSIZE*0] = (DCTELEM) ((tmp0 + tmp2 - 4 * CENTERJSAMPLE) << 4); data[DCTSIZE*1] = (DCTELEM) ((tmp0 - tmp2) << 4); /* Column 1 */ data[DCTSIZE*0+1] = (DCTELEM) ((tmp1 + tmp3) << 4); data[DCTSIZE*1+1] = (DCTELEM) ((tmp1 - tmp3) << 4); } /* * Perform the forward DCT on a 1x1 sample block. */ GLOBAL(void) jpeg_fdct_1x1 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* We leave the result scaled up by an overall factor of 8. */ /* We must also scale the output by (8/1)**2 = 2**6. */ /* Apply unsigned->signed conversion */ data[0] = (DCTELEM) ((GETJSAMPLE(sample_data[0][start_col]) - CENTERJSAMPLE) << 6); } /* * Perform the forward DCT on a 9x9 sample block. */ GLOBAL(void) jpeg_fdct_9x9 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1, z2; DCTELEM workspace[8]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* we scale the results further by 2 as part of output adaption */ /* scaling for different DCT size. */ /* cK represents sqrt(2) * cos(K*pi/18). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[8]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[7]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[6]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[5]); tmp4 = GETJSAMPLE(elemptr[4]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[8]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[7]); tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[6]); tmp13 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[5]); z1 = tmp0 + tmp2 + tmp3; z2 = tmp1 + tmp4; /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((z1 + z2 - 9 * CENTERJSAMPLE) << 1); dataptr[6] = (DCTELEM) DESCALE(MULTIPLY(z1 - z2 - z2, FIX(0.707106781)), /* c6 */ CONST_BITS-1); z1 = MULTIPLY(tmp0 - tmp2, FIX(1.328926049)); /* c2 */ z2 = MULTIPLY(tmp1 - tmp4 - tmp4, FIX(0.707106781)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp2 - tmp3, FIX(1.083350441)) /* c4 */ + z1 + z2, CONST_BITS-1); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp3 - tmp0, FIX(0.245575608)) /* c8 */ + z1 - z2, CONST_BITS-1); /* Odd part */ dataptr[3] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12 - tmp13, FIX(1.224744871)), /* c3 */ CONST_BITS-1); tmp11 = MULTIPLY(tmp11, FIX(1.224744871)); /* c3 */ tmp0 = MULTIPLY(tmp10 + tmp12, FIX(0.909038955)); /* c5 */ tmp1 = MULTIPLY(tmp10 + tmp13, FIX(0.483689525)); /* c7 */ dataptr[1] = (DCTELEM) DESCALE(tmp11 + tmp0 + tmp1, CONST_BITS-1); tmp2 = MULTIPLY(tmp12 - tmp13, FIX(1.392728481)); /* c1 */ dataptr[5] = (DCTELEM) DESCALE(tmp0 - tmp11 - tmp2, CONST_BITS-1); dataptr[7] = (DCTELEM) DESCALE(tmp1 - tmp11 + tmp2, CONST_BITS-1); ctr++; if (ctr != DCTSIZE) { if (ctr == 9) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/9)**2 = 64/81, which we partially * fold into the constant multipliers and final/initial shifting: * cK now represents sqrt(2) * cos(K*pi/18) * 128/81. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*0]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*7]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*6]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*5]; tmp4 = dataptr[DCTSIZE*4]; tmp10 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*0]; tmp11 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*7]; tmp12 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*6]; tmp13 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*5]; z1 = tmp0 + tmp2 + tmp3; z2 = tmp1 + tmp4; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(z1 + z2, FIX(1.580246914)), /* 128/81 */ CONST_BITS+2); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(MULTIPLY(z1 - z2 - z2, FIX(1.117403309)), /* c6 */ CONST_BITS+2); z1 = MULTIPLY(tmp0 - tmp2, FIX(2.100031287)); /* c2 */ z2 = MULTIPLY(tmp1 - tmp4 - tmp4, FIX(1.117403309)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp2 - tmp3, FIX(1.711961190)) /* c4 */ + z1 + z2, CONST_BITS+2); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp3 - tmp0, FIX(0.388070096)) /* c8 */ + z1 - z2, CONST_BITS+2); /* Odd part */ dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12 - tmp13, FIX(1.935399303)), /* c3 */ CONST_BITS+2); tmp11 = MULTIPLY(tmp11, FIX(1.935399303)); /* c3 */ tmp0 = MULTIPLY(tmp10 + tmp12, FIX(1.436506004)); /* c5 */ tmp1 = MULTIPLY(tmp10 + tmp13, FIX(0.764348879)); /* c7 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp11 + tmp0 + tmp1, CONST_BITS+2); tmp2 = MULTIPLY(tmp12 - tmp13, FIX(2.200854883)); /* c1 */ dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp0 - tmp11 - tmp2, CONST_BITS+2); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp1 - tmp11 + tmp2, CONST_BITS+2); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 10x10 sample block. */ GLOBAL(void) jpeg_fdct_10x10 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4; INT32 tmp10, tmp11, tmp12, tmp13, tmp14; DCTELEM workspace[8*2]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* we scale the results further by 2 as part of output adaption */ /* scaling for different DCT size. */ /* cK represents sqrt(2) * cos(K*pi/20). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[9]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[8]); tmp12 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[7]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[6]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[5]); tmp10 = tmp0 + tmp4; tmp13 = tmp0 - tmp4; tmp11 = tmp1 + tmp3; tmp14 = tmp1 - tmp3; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[9]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[8]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[7]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[6]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[5]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 + tmp12 - 10 * CENTERJSAMPLE) << 1); tmp12 += tmp12; dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.144122806)) - /* c4 */ MULTIPLY(tmp11 - tmp12, FIX(0.437016024)), /* c8 */ CONST_BITS-1); tmp10 = MULTIPLY(tmp13 + tmp14, FIX(0.831253876)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp13, FIX(0.513743148)), /* c2-c6 */ CONST_BITS-1); dataptr[6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(2.176250899)), /* c2+c6 */ CONST_BITS-1); /* Odd part */ tmp10 = tmp0 + tmp4; tmp11 = tmp1 - tmp3; dataptr[5] = (DCTELEM) ((tmp10 - tmp11 - tmp2) << 1); tmp2 <<= CONST_BITS; dataptr[1] = (DCTELEM) DESCALE(MULTIPLY(tmp0, FIX(1.396802247)) + /* c1 */ MULTIPLY(tmp1, FIX(1.260073511)) + tmp2 + /* c3 */ MULTIPLY(tmp3, FIX(0.642039522)) + /* c7 */ MULTIPLY(tmp4, FIX(0.221231742)), /* c9 */ CONST_BITS-1); tmp12 = MULTIPLY(tmp0 - tmp4, FIX(0.951056516)) - /* (c3+c7)/2 */ MULTIPLY(tmp1 + tmp3, FIX(0.587785252)); /* (c1-c9)/2 */ tmp13 = MULTIPLY(tmp10 + tmp11, FIX(0.309016994)) + /* (c3-c7)/2 */ (tmp11 << (CONST_BITS - 1)) - tmp2; dataptr[3] = (DCTELEM) DESCALE(tmp12 + tmp13, CONST_BITS-1); dataptr[7] = (DCTELEM) DESCALE(tmp12 - tmp13, CONST_BITS-1); ctr++; if (ctr != DCTSIZE) { if (ctr == 10) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/10)**2 = 16/25, which we partially * fold into the constant multipliers and final/initial shifting: * cK now represents sqrt(2) * cos(K*pi/20) * 32/25. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*1]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*0]; tmp12 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*7]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*6]; tmp4 = dataptr[DCTSIZE*4] + dataptr[DCTSIZE*5]; tmp10 = tmp0 + tmp4; tmp13 = tmp0 - tmp4; tmp11 = tmp1 + tmp3; tmp14 = tmp1 - tmp3; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*1]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*0]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*7]; tmp3 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*6]; tmp4 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*5]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11 + tmp12, FIX(1.28)), /* 32/25 */ CONST_BITS+2); tmp12 += tmp12; dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.464477191)) - /* c4 */ MULTIPLY(tmp11 - tmp12, FIX(0.559380511)), /* c8 */ CONST_BITS+2); tmp10 = MULTIPLY(tmp13 + tmp14, FIX(1.064004961)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp13, FIX(0.657591230)), /* c2-c6 */ CONST_BITS+2); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(2.785601151)), /* c2+c6 */ CONST_BITS+2); /* Odd part */ tmp10 = tmp0 + tmp4; tmp11 = tmp1 - tmp3; dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp2, FIX(1.28)), /* 32/25 */ CONST_BITS+2); tmp2 = MULTIPLY(tmp2, FIX(1.28)); /* 32/25 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(MULTIPLY(tmp0, FIX(1.787906876)) + /* c1 */ MULTIPLY(tmp1, FIX(1.612894094)) + tmp2 + /* c3 */ MULTIPLY(tmp3, FIX(0.821810588)) + /* c7 */ MULTIPLY(tmp4, FIX(0.283176630)), /* c9 */ CONST_BITS+2); tmp12 = MULTIPLY(tmp0 - tmp4, FIX(1.217352341)) - /* (c3+c7)/2 */ MULTIPLY(tmp1 + tmp3, FIX(0.752365123)); /* (c1-c9)/2 */ tmp13 = MULTIPLY(tmp10 + tmp11, FIX(0.395541753)) + /* (c3-c7)/2 */ MULTIPLY(tmp11, FIX(0.64)) - tmp2; /* 16/25 */ dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp12 + tmp13, CONST_BITS+2); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp12 - tmp13, CONST_BITS+2); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on an 11x11 sample block. */ GLOBAL(void) jpeg_fdct_11x11 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5; INT32 tmp10, tmp11, tmp12, tmp13, tmp14; INT32 z1, z2, z3; DCTELEM workspace[8*3]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* we scale the results further by 2 as part of output adaption */ /* scaling for different DCT size. */ /* cK represents sqrt(2) * cos(K*pi/22). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[10]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[9]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[8]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[7]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[6]); tmp5 = GETJSAMPLE(elemptr[5]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[10]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[9]); tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[8]); tmp13 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[7]); tmp14 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[6]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 + tmp2 + tmp3 + tmp4 + tmp5 - 11 * CENTERJSAMPLE) << 1); tmp5 += tmp5; tmp0 -= tmp5; tmp1 -= tmp5; tmp2 -= tmp5; tmp3 -= tmp5; tmp4 -= tmp5; z1 = MULTIPLY(tmp0 + tmp3, FIX(1.356927976)) + /* c2 */ MULTIPLY(tmp2 + tmp4, FIX(0.201263574)); /* c10 */ z2 = MULTIPLY(tmp1 - tmp3, FIX(0.926112931)); /* c6 */ z3 = MULTIPLY(tmp0 - tmp1, FIX(1.189712156)); /* c4 */ dataptr[2] = (DCTELEM) DESCALE(z1 + z2 - MULTIPLY(tmp3, FIX(1.018300590)) /* c2+c8-c6 */ - MULTIPLY(tmp4, FIX(1.390975730)), /* c4+c10 */ CONST_BITS-1); dataptr[4] = (DCTELEM) DESCALE(z2 + z3 + MULTIPLY(tmp1, FIX(0.062335650)) /* c4-c6-c10 */ - MULTIPLY(tmp2, FIX(1.356927976)) /* c2 */ + MULTIPLY(tmp4, FIX(0.587485545)), /* c8 */ CONST_BITS-1); dataptr[6] = (DCTELEM) DESCALE(z1 + z3 - MULTIPLY(tmp0, FIX(1.620527200)) /* c2+c4-c6 */ - MULTIPLY(tmp2, FIX(0.788749120)), /* c8+c10 */ CONST_BITS-1); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(1.286413905)); /* c3 */ tmp2 = MULTIPLY(tmp10 + tmp12, FIX(1.068791298)); /* c5 */ tmp3 = MULTIPLY(tmp10 + tmp13, FIX(0.764581576)); /* c7 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(tmp10, FIX(1.719967871)) /* c7+c5+c3-c1 */ + MULTIPLY(tmp14, FIX(0.398430003)); /* c9 */ tmp4 = MULTIPLY(tmp11 + tmp12, - FIX(0.764581576)); /* -c7 */ tmp5 = MULTIPLY(tmp11 + tmp13, - FIX(1.399818907)); /* -c1 */ tmp1 += tmp4 + tmp5 + MULTIPLY(tmp11, FIX(1.276416582)) /* c9+c7+c1-c3 */ - MULTIPLY(tmp14, FIX(1.068791298)); /* c5 */ tmp10 = MULTIPLY(tmp12 + tmp13, FIX(0.398430003)); /* c9 */ tmp2 += tmp4 + tmp10 - MULTIPLY(tmp12, FIX(1.989053629)) /* c9+c5+c3-c7 */ + MULTIPLY(tmp14, FIX(1.399818907)); /* c1 */ tmp3 += tmp5 + tmp10 + MULTIPLY(tmp13, FIX(1.305598626)) /* c1+c5-c9-c7 */ - MULTIPLY(tmp14, FIX(1.286413905)); /* c3 */ dataptr[1] = (DCTELEM) DESCALE(tmp0, CONST_BITS-1); dataptr[3] = (DCTELEM) DESCALE(tmp1, CONST_BITS-1); dataptr[5] = (DCTELEM) DESCALE(tmp2, CONST_BITS-1); dataptr[7] = (DCTELEM) DESCALE(tmp3, CONST_BITS-1); ctr++; if (ctr != DCTSIZE) { if (ctr == 11) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/11)**2 = 64/121, which we partially * fold into the constant multipliers and final/initial shifting: * cK now represents sqrt(2) * cos(K*pi/22) * 128/121. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*2]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*1]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*0]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*7]; tmp4 = dataptr[DCTSIZE*4] + dataptr[DCTSIZE*6]; tmp5 = dataptr[DCTSIZE*5]; tmp10 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*2]; tmp11 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*1]; tmp12 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*0]; tmp13 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*7]; tmp14 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*6]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp0 + tmp1 + tmp2 + tmp3 + tmp4 + tmp5, FIX(1.057851240)), /* 128/121 */ CONST_BITS+2); tmp5 += tmp5; tmp0 -= tmp5; tmp1 -= tmp5; tmp2 -= tmp5; tmp3 -= tmp5; tmp4 -= tmp5; z1 = MULTIPLY(tmp0 + tmp3, FIX(1.435427942)) + /* c2 */ MULTIPLY(tmp2 + tmp4, FIX(0.212906922)); /* c10 */ z2 = MULTIPLY(tmp1 - tmp3, FIX(0.979689713)); /* c6 */ z3 = MULTIPLY(tmp0 - tmp1, FIX(1.258538479)); /* c4 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + z2 - MULTIPLY(tmp3, FIX(1.077210542)) /* c2+c8-c6 */ - MULTIPLY(tmp4, FIX(1.471445400)), /* c4+c10 */ CONST_BITS+2); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(z2 + z3 + MULTIPLY(tmp1, FIX(0.065941844)) /* c4-c6-c10 */ - MULTIPLY(tmp2, FIX(1.435427942)) /* c2 */ + MULTIPLY(tmp4, FIX(0.621472312)), /* c8 */ CONST_BITS+2); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + z3 - MULTIPLY(tmp0, FIX(1.714276708)) /* c2+c4-c6 */ - MULTIPLY(tmp2, FIX(0.834379234)), /* c8+c10 */ CONST_BITS+2); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(1.360834544)); /* c3 */ tmp2 = MULTIPLY(tmp10 + tmp12, FIX(1.130622199)); /* c5 */ tmp3 = MULTIPLY(tmp10 + tmp13, FIX(0.808813568)); /* c7 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(tmp10, FIX(1.819470145)) /* c7+c5+c3-c1 */ + MULTIPLY(tmp14, FIX(0.421479672)); /* c9 */ tmp4 = MULTIPLY(tmp11 + tmp12, - FIX(0.808813568)); /* -c7 */ tmp5 = MULTIPLY(tmp11 + tmp13, - FIX(1.480800167)); /* -c1 */ tmp1 += tmp4 + tmp5 + MULTIPLY(tmp11, FIX(1.350258864)) /* c9+c7+c1-c3 */ - MULTIPLY(tmp14, FIX(1.130622199)); /* c5 */ tmp10 = MULTIPLY(tmp12 + tmp13, FIX(0.421479672)); /* c9 */ tmp2 += tmp4 + tmp10 - MULTIPLY(tmp12, FIX(2.104122847)) /* c9+c5+c3-c7 */ + MULTIPLY(tmp14, FIX(1.480800167)); /* c1 */ tmp3 += tmp5 + tmp10 + MULTIPLY(tmp13, FIX(1.381129125)) /* c1+c5-c9-c7 */ - MULTIPLY(tmp14, FIX(1.360834544)); /* c3 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0, CONST_BITS+2); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1, CONST_BITS+2); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2, CONST_BITS+2); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp3, CONST_BITS+2); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 12x12 sample block. */ GLOBAL(void) jpeg_fdct_12x12 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; DCTELEM workspace[8*4]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT. */ /* cK represents sqrt(2) * cos(K*pi/24). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[11]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[10]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[9]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[8]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[7]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[6]); tmp10 = tmp0 + tmp5; tmp13 = tmp0 - tmp5; tmp11 = tmp1 + tmp4; tmp14 = tmp1 - tmp4; tmp12 = tmp2 + tmp3; tmp15 = tmp2 - tmp3; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[11]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[10]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[9]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[8]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[7]); tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[6]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) (tmp10 + tmp11 + tmp12 - 12 * CENTERJSAMPLE); dataptr[6] = (DCTELEM) (tmp13 - tmp14 - tmp15); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.224744871)), /* c4 */ CONST_BITS); dataptr[2] = (DCTELEM) DESCALE(tmp14 - tmp15 + MULTIPLY(tmp13 + tmp15, FIX(1.366025404)), /* c2 */ CONST_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp1 + tmp4, FIX_0_541196100); /* c9 */ tmp14 = tmp10 + MULTIPLY(tmp1, FIX_0_765366865); /* c3-c9 */ tmp15 = tmp10 - MULTIPLY(tmp4, FIX_1_847759065); /* c3+c9 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(1.121971054)); /* c5 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(0.860918669)); /* c7 */ tmp10 = tmp12 + tmp13 + tmp14 - MULTIPLY(tmp0, FIX(0.580774953)) /* c5+c7-c1 */ + MULTIPLY(tmp5, FIX(0.184591911)); /* c11 */ tmp11 = MULTIPLY(tmp2 + tmp3, - FIX(0.184591911)); /* -c11 */ tmp12 += tmp11 - tmp15 - MULTIPLY(tmp2, FIX(2.339493912)) /* c1+c5-c11 */ + MULTIPLY(tmp5, FIX(0.860918669)); /* c7 */ tmp13 += tmp11 - tmp14 + MULTIPLY(tmp3, FIX(0.725788011)) /* c1+c11-c7 */ - MULTIPLY(tmp5, FIX(1.121971054)); /* c5 */ tmp11 = tmp15 + MULTIPLY(tmp0 - tmp3, FIX(1.306562965)) /* c3 */ - MULTIPLY(tmp2 + tmp5, FIX_0_541196100); /* c9 */ dataptr[1] = (DCTELEM) DESCALE(tmp10, CONST_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp11, CONST_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp12, CONST_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp13, CONST_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == 12) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/12)**2 = 4/9, which we partially * fold into the constant multipliers and final shifting: * cK now represents sqrt(2) * cos(K*pi/24) * 8/9. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*3]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*2]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*1]; tmp3 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*0]; tmp4 = dataptr[DCTSIZE*4] + dataptr[DCTSIZE*7]; tmp5 = dataptr[DCTSIZE*5] + dataptr[DCTSIZE*6]; tmp10 = tmp0 + tmp5; tmp13 = tmp0 - tmp5; tmp11 = tmp1 + tmp4; tmp14 = tmp1 - tmp4; tmp12 = tmp2 + tmp3; tmp15 = tmp2 - tmp3; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*3]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*2]; tmp2 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*1]; tmp3 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*0]; tmp4 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*7]; tmp5 = dataptr[DCTSIZE*5] - dataptr[DCTSIZE*6]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11 + tmp12, FIX(0.888888889)), /* 8/9 */ CONST_BITS+1); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(MULTIPLY(tmp13 - tmp14 - tmp15, FIX(0.888888889)), /* 8/9 */ CONST_BITS+1); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.088662108)), /* c4 */ CONST_BITS+1); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp14 - tmp15, FIX(0.888888889)) + /* 8/9 */ MULTIPLY(tmp13 + tmp15, FIX(1.214244803)), /* c2 */ CONST_BITS+1); /* Odd part */ tmp10 = MULTIPLY(tmp1 + tmp4, FIX(0.481063200)); /* c9 */ tmp14 = tmp10 + MULTIPLY(tmp1, FIX(0.680326102)); /* c3-c9 */ tmp15 = tmp10 - MULTIPLY(tmp4, FIX(1.642452502)); /* c3+c9 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(0.997307603)); /* c5 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(0.765261039)); /* c7 */ tmp10 = tmp12 + tmp13 + tmp14 - MULTIPLY(tmp0, FIX(0.516244403)) /* c5+c7-c1 */ + MULTIPLY(tmp5, FIX(0.164081699)); /* c11 */ tmp11 = MULTIPLY(tmp2 + tmp3, - FIX(0.164081699)); /* -c11 */ tmp12 += tmp11 - tmp15 - MULTIPLY(tmp2, FIX(2.079550144)) /* c1+c5-c11 */ + MULTIPLY(tmp5, FIX(0.765261039)); /* c7 */ tmp13 += tmp11 - tmp14 + MULTIPLY(tmp3, FIX(0.645144899)) /* c1+c11-c7 */ - MULTIPLY(tmp5, FIX(0.997307603)); /* c5 */ tmp11 = tmp15 + MULTIPLY(tmp0 - tmp3, FIX(1.161389302)) /* c3 */ - MULTIPLY(tmp2 + tmp5, FIX(0.481063200)); /* c9 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10, CONST_BITS+1); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp11, CONST_BITS+1); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp12, CONST_BITS+1); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp13, CONST_BITS+1); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 13x13 sample block. */ GLOBAL(void) jpeg_fdct_13x13 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; INT32 z1, z2; DCTELEM workspace[8*5]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT. */ /* cK represents sqrt(2) * cos(K*pi/26). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[12]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[11]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[10]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[9]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[8]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[7]); tmp6 = GETJSAMPLE(elemptr[6]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[12]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[11]); tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[10]); tmp13 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[9]); tmp14 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[8]); tmp15 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[7]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) (tmp0 + tmp1 + tmp2 + tmp3 + tmp4 + tmp5 + tmp6 - 13 * CENTERJSAMPLE); tmp6 += tmp6; tmp0 -= tmp6; tmp1 -= tmp6; tmp2 -= tmp6; tmp3 -= tmp6; tmp4 -= tmp6; tmp5 -= tmp6; dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp0, FIX(1.373119086)) + /* c2 */ MULTIPLY(tmp1, FIX(1.058554052)) + /* c6 */ MULTIPLY(tmp2, FIX(0.501487041)) - /* c10 */ MULTIPLY(tmp3, FIX(0.170464608)) - /* c12 */ MULTIPLY(tmp4, FIX(0.803364869)) - /* c8 */ MULTIPLY(tmp5, FIX(1.252223920)), /* c4 */ CONST_BITS); z1 = MULTIPLY(tmp0 - tmp2, FIX(1.155388986)) - /* (c4+c6)/2 */ MULTIPLY(tmp3 - tmp4, FIX(0.435816023)) - /* (c2-c10)/2 */ MULTIPLY(tmp1 - tmp5, FIX(0.316450131)); /* (c8-c12)/2 */ z2 = MULTIPLY(tmp0 + tmp2, FIX(0.096834934)) - /* (c4-c6)/2 */ MULTIPLY(tmp3 + tmp4, FIX(0.937303064)) + /* (c2+c10)/2 */ MULTIPLY(tmp1 + tmp5, FIX(0.486914739)); /* (c8+c12)/2 */ dataptr[4] = (DCTELEM) DESCALE(z1 + z2, CONST_BITS); dataptr[6] = (DCTELEM) DESCALE(z1 - z2, CONST_BITS); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(1.322312651)); /* c3 */ tmp2 = MULTIPLY(tmp10 + tmp12, FIX(1.163874945)); /* c5 */ tmp3 = MULTIPLY(tmp10 + tmp13, FIX(0.937797057)) + /* c7 */ MULTIPLY(tmp14 + tmp15, FIX(0.338443458)); /* c11 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(tmp10, FIX(2.020082300)) + /* c3+c5+c7-c1 */ MULTIPLY(tmp14, FIX(0.318774355)); /* c9-c11 */ tmp4 = MULTIPLY(tmp14 - tmp15, FIX(0.937797057)) - /* c7 */ MULTIPLY(tmp11 + tmp12, FIX(0.338443458)); /* c11 */ tmp5 = MULTIPLY(tmp11 + tmp13, - FIX(1.163874945)); /* -c5 */ tmp1 += tmp4 + tmp5 + MULTIPLY(tmp11, FIX(0.837223564)) - /* c5+c9+c11-c3 */ MULTIPLY(tmp14, FIX(2.341699410)); /* c1+c7 */ tmp6 = MULTIPLY(tmp12 + tmp13, - FIX(0.657217813)); /* -c9 */ tmp2 += tmp4 + tmp6 - MULTIPLY(tmp12, FIX(1.572116027)) + /* c1+c5-c9-c11 */ MULTIPLY(tmp15, FIX(2.260109708)); /* c3+c7 */ tmp3 += tmp5 + tmp6 + MULTIPLY(tmp13, FIX(2.205608352)) - /* c3+c5+c9-c7 */ MULTIPLY(tmp15, FIX(1.742345811)); /* c1+c11 */ dataptr[1] = (DCTELEM) DESCALE(tmp0, CONST_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp1, CONST_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp2, CONST_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp3, CONST_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == 13) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/13)**2 = 64/169, which we partially * fold into the constant multipliers and final shifting: * cK now represents sqrt(2) * cos(K*pi/26) * 128/169. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*4]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*3]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*2]; tmp3 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*1]; tmp4 = dataptr[DCTSIZE*4] + wsptr[DCTSIZE*0]; tmp5 = dataptr[DCTSIZE*5] + dataptr[DCTSIZE*7]; tmp6 = dataptr[DCTSIZE*6]; tmp10 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*4]; tmp11 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*3]; tmp12 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*2]; tmp13 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*1]; tmp14 = dataptr[DCTSIZE*4] - wsptr[DCTSIZE*0]; tmp15 = dataptr[DCTSIZE*5] - dataptr[DCTSIZE*7]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp0 + tmp1 + tmp2 + tmp3 + tmp4 + tmp5 + tmp6, FIX(0.757396450)), /* 128/169 */ CONST_BITS+1); tmp6 += tmp6; tmp0 -= tmp6; tmp1 -= tmp6; tmp2 -= tmp6; tmp3 -= tmp6; tmp4 -= tmp6; tmp5 -= tmp6; dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp0, FIX(1.039995521)) + /* c2 */ MULTIPLY(tmp1, FIX(0.801745081)) + /* c6 */ MULTIPLY(tmp2, FIX(0.379824504)) - /* c10 */ MULTIPLY(tmp3, FIX(0.129109289)) - /* c12 */ MULTIPLY(tmp4, FIX(0.608465700)) - /* c8 */ MULTIPLY(tmp5, FIX(0.948429952)), /* c4 */ CONST_BITS+1); z1 = MULTIPLY(tmp0 - tmp2, FIX(0.875087516)) - /* (c4+c6)/2 */ MULTIPLY(tmp3 - tmp4, FIX(0.330085509)) - /* (c2-c10)/2 */ MULTIPLY(tmp1 - tmp5, FIX(0.239678205)); /* (c8-c12)/2 */ z2 = MULTIPLY(tmp0 + tmp2, FIX(0.073342435)) - /* (c4-c6)/2 */ MULTIPLY(tmp3 + tmp4, FIX(0.709910013)) + /* (c2+c10)/2 */ MULTIPLY(tmp1 + tmp5, FIX(0.368787494)); /* (c8+c12)/2 */ dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(z1 + z2, CONST_BITS+1); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 - z2, CONST_BITS+1); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(1.001514908)); /* c3 */ tmp2 = MULTIPLY(tmp10 + tmp12, FIX(0.881514751)); /* c5 */ tmp3 = MULTIPLY(tmp10 + tmp13, FIX(0.710284161)) + /* c7 */ MULTIPLY(tmp14 + tmp15, FIX(0.256335874)); /* c11 */ tmp0 = tmp1 + tmp2 + tmp3 - MULTIPLY(tmp10, FIX(1.530003162)) + /* c3+c5+c7-c1 */ MULTIPLY(tmp14, FIX(0.241438564)); /* c9-c11 */ tmp4 = MULTIPLY(tmp14 - tmp15, FIX(0.710284161)) - /* c7 */ MULTIPLY(tmp11 + tmp12, FIX(0.256335874)); /* c11 */ tmp5 = MULTIPLY(tmp11 + tmp13, - FIX(0.881514751)); /* -c5 */ tmp1 += tmp4 + tmp5 + MULTIPLY(tmp11, FIX(0.634110155)) - /* c5+c9+c11-c3 */ MULTIPLY(tmp14, FIX(1.773594819)); /* c1+c7 */ tmp6 = MULTIPLY(tmp12 + tmp13, - FIX(0.497774438)); /* -c9 */ tmp2 += tmp4 + tmp6 - MULTIPLY(tmp12, FIX(1.190715098)) + /* c1+c5-c9-c11 */ MULTIPLY(tmp15, FIX(1.711799069)); /* c3+c7 */ tmp3 += tmp5 + tmp6 + MULTIPLY(tmp13, FIX(1.670519935)) - /* c3+c5+c9-c7 */ MULTIPLY(tmp15, FIX(1.319646532)); /* c1+c11 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0, CONST_BITS+1); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1, CONST_BITS+1); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2, CONST_BITS+1); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp3, CONST_BITS+1); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 14x14 sample block. */ GLOBAL(void) jpeg_fdct_14x14 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; DCTELEM workspace[8*6]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT. */ /* cK represents sqrt(2) * cos(K*pi/28). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[13]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[12]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[11]); tmp13 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[10]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[9]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[8]); tmp6 = GETJSAMPLE(elemptr[6]) + GETJSAMPLE(elemptr[7]); tmp10 = tmp0 + tmp6; tmp14 = tmp0 - tmp6; tmp11 = tmp1 + tmp5; tmp15 = tmp1 - tmp5; tmp12 = tmp2 + tmp4; tmp16 = tmp2 - tmp4; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[13]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[12]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[11]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[10]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[9]); tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[8]); tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[7]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) (tmp10 + tmp11 + tmp12 + tmp13 - 14 * CENTERJSAMPLE); tmp13 += tmp13; dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(1.274162392)) + /* c4 */ MULTIPLY(tmp11 - tmp13, FIX(0.314692123)) - /* c12 */ MULTIPLY(tmp12 - tmp13, FIX(0.881747734)), /* c8 */ CONST_BITS); tmp10 = MULTIPLY(tmp14 + tmp15, FIX(1.105676686)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp14, FIX(0.273079590)) /* c2-c6 */ + MULTIPLY(tmp16, FIX(0.613604268)), /* c10 */ CONST_BITS); dataptr[6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp15, FIX(1.719280954)) /* c6+c10 */ - MULTIPLY(tmp16, FIX(1.378756276)), /* c2 */ CONST_BITS); /* Odd part */ tmp10 = tmp1 + tmp2; tmp11 = tmp5 - tmp4; dataptr[7] = (DCTELEM) (tmp0 - tmp10 + tmp3 - tmp11 - tmp6); tmp3 <<= CONST_BITS; tmp10 = MULTIPLY(tmp10, - FIX(0.158341681)); /* -c13 */ tmp11 = MULTIPLY(tmp11, FIX(1.405321284)); /* c1 */ tmp10 += tmp11 - tmp3; tmp11 = MULTIPLY(tmp0 + tmp2, FIX(1.197448846)) + /* c5 */ MULTIPLY(tmp4 + tmp6, FIX(0.752406978)); /* c9 */ dataptr[5] = (DCTELEM) DESCALE(tmp10 + tmp11 - MULTIPLY(tmp2, FIX(2.373959773)) /* c3+c5-c13 */ + MULTIPLY(tmp4, FIX(1.119999435)), /* c1+c11-c9 */ CONST_BITS); tmp12 = MULTIPLY(tmp0 + tmp1, FIX(1.334852607)) + /* c3 */ MULTIPLY(tmp5 - tmp6, FIX(0.467085129)); /* c11 */ dataptr[3] = (DCTELEM) DESCALE(tmp10 + tmp12 - MULTIPLY(tmp1, FIX(0.424103948)) /* c3-c9-c13 */ - MULTIPLY(tmp5, FIX(3.069855259)), /* c1+c5+c11 */ CONST_BITS); dataptr[1] = (DCTELEM) DESCALE(tmp11 + tmp12 + tmp3 + tmp6 - MULTIPLY(tmp0 + tmp6, FIX(1.126980169)), /* c3+c5-c1 */ CONST_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == 14) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/14)**2 = 16/49, which we partially * fold into the constant multipliers and final shifting: * cK now represents sqrt(2) * cos(K*pi/28) * 32/49. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*3]; tmp13 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*2]; tmp4 = dataptr[DCTSIZE*4] + wsptr[DCTSIZE*1]; tmp5 = dataptr[DCTSIZE*5] + wsptr[DCTSIZE*0]; tmp6 = dataptr[DCTSIZE*6] + dataptr[DCTSIZE*7]; tmp10 = tmp0 + tmp6; tmp14 = tmp0 - tmp6; tmp11 = tmp1 + tmp5; tmp15 = tmp1 - tmp5; tmp12 = tmp2 + tmp4; tmp16 = tmp2 - tmp4; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*3]; tmp3 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*2]; tmp4 = dataptr[DCTSIZE*4] - wsptr[DCTSIZE*1]; tmp5 = dataptr[DCTSIZE*5] - wsptr[DCTSIZE*0]; tmp6 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11 + tmp12 + tmp13, FIX(0.653061224)), /* 32/49 */ CONST_BITS+1); tmp13 += tmp13; dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(0.832106052)) + /* c4 */ MULTIPLY(tmp11 - tmp13, FIX(0.205513223)) - /* c12 */ MULTIPLY(tmp12 - tmp13, FIX(0.575835255)), /* c8 */ CONST_BITS+1); tmp10 = MULTIPLY(tmp14 + tmp15, FIX(0.722074570)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp14, FIX(0.178337691)) /* c2-c6 */ + MULTIPLY(tmp16, FIX(0.400721155)), /* c10 */ CONST_BITS+1); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp15, FIX(1.122795725)) /* c6+c10 */ - MULTIPLY(tmp16, FIX(0.900412262)), /* c2 */ CONST_BITS+1); /* Odd part */ tmp10 = tmp1 + tmp2; tmp11 = tmp5 - tmp4; dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp10 + tmp3 - tmp11 - tmp6, FIX(0.653061224)), /* 32/49 */ CONST_BITS+1); tmp3 = MULTIPLY(tmp3 , FIX(0.653061224)); /* 32/49 */ tmp10 = MULTIPLY(tmp10, - FIX(0.103406812)); /* -c13 */ tmp11 = MULTIPLY(tmp11, FIX(0.917760839)); /* c1 */ tmp10 += tmp11 - tmp3; tmp11 = MULTIPLY(tmp0 + tmp2, FIX(0.782007410)) + /* c5 */ MULTIPLY(tmp4 + tmp6, FIX(0.491367823)); /* c9 */ dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 + tmp11 - MULTIPLY(tmp2, FIX(1.550341076)) /* c3+c5-c13 */ + MULTIPLY(tmp4, FIX(0.731428202)), /* c1+c11-c9 */ CONST_BITS+1); tmp12 = MULTIPLY(tmp0 + tmp1, FIX(0.871740478)) + /* c3 */ MULTIPLY(tmp5 - tmp6, FIX(0.305035186)); /* c11 */ dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp10 + tmp12 - MULTIPLY(tmp1, FIX(0.276965844)) /* c3-c9-c13 */ - MULTIPLY(tmp5, FIX(2.004803435)), /* c1+c5+c11 */ CONST_BITS+1); dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp11 + tmp12 + tmp3 - MULTIPLY(tmp0, FIX(0.735987049)) /* c3+c5-c1 */ - MULTIPLY(tmp6, FIX(0.082925825)), /* c9-c11-c13 */ CONST_BITS+1); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 15x15 sample block. */ GLOBAL(void) jpeg_fdct_15x15 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 z1, z2, z3; DCTELEM workspace[8*7]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT. */ /* cK represents sqrt(2) * cos(K*pi/30). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[14]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[13]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[12]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[11]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[10]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[9]); tmp6 = GETJSAMPLE(elemptr[6]) + GETJSAMPLE(elemptr[8]); tmp7 = GETJSAMPLE(elemptr[7]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[14]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[13]); tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[12]); tmp13 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[11]); tmp14 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[10]); tmp15 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[9]); tmp16 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[8]); z1 = tmp0 + tmp4 + tmp5; z2 = tmp1 + tmp3 + tmp6; z3 = tmp2 + tmp7; /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) (z1 + z2 + z3 - 15 * CENTERJSAMPLE); z3 += z3; dataptr[6] = (DCTELEM) DESCALE(MULTIPLY(z1 - z3, FIX(1.144122806)) - /* c6 */ MULTIPLY(z2 - z3, FIX(0.437016024)), /* c12 */ CONST_BITS); tmp2 += ((tmp1 + tmp4) >> 1) - tmp7 - tmp7; z1 = MULTIPLY(tmp3 - tmp2, FIX(1.531135173)) - /* c2+c14 */ MULTIPLY(tmp6 - tmp2, FIX(2.238241955)); /* c4+c8 */ z2 = MULTIPLY(tmp5 - tmp2, FIX(0.798468008)) - /* c8-c14 */ MULTIPLY(tmp0 - tmp2, FIX(0.091361227)); /* c2-c4 */ z3 = MULTIPLY(tmp0 - tmp3, FIX(1.383309603)) + /* c2 */ MULTIPLY(tmp6 - tmp5, FIX(0.946293579)) + /* c8 */ MULTIPLY(tmp1 - tmp4, FIX(0.790569415)); /* (c6+c12)/2 */ dataptr[2] = (DCTELEM) DESCALE(z1 + z3, CONST_BITS); dataptr[4] = (DCTELEM) DESCALE(z2 + z3, CONST_BITS); /* Odd part */ tmp2 = MULTIPLY(tmp10 - tmp12 - tmp13 + tmp15 + tmp16, FIX(1.224744871)); /* c5 */ tmp1 = MULTIPLY(tmp10 - tmp14 - tmp15, FIX(1.344997024)) + /* c3 */ MULTIPLY(tmp11 - tmp13 - tmp16, FIX(0.831253876)); /* c9 */ tmp12 = MULTIPLY(tmp12, FIX(1.224744871)); /* c5 */ tmp4 = MULTIPLY(tmp10 - tmp16, FIX(1.406466353)) + /* c1 */ MULTIPLY(tmp11 + tmp14, FIX(1.344997024)) + /* c3 */ MULTIPLY(tmp13 + tmp15, FIX(0.575212477)); /* c11 */ tmp0 = MULTIPLY(tmp13, FIX(0.475753014)) - /* c7-c11 */ MULTIPLY(tmp14, FIX(0.513743148)) + /* c3-c9 */ MULTIPLY(tmp16, FIX(1.700497885)) + tmp4 + tmp12; /* c1+c13 */ tmp3 = MULTIPLY(tmp10, - FIX(0.355500862)) - /* -(c1-c7) */ MULTIPLY(tmp11, FIX(2.176250899)) - /* c3+c9 */ MULTIPLY(tmp15, FIX(0.869244010)) + tmp4 - tmp12; /* c11+c13 */ dataptr[1] = (DCTELEM) DESCALE(tmp0, CONST_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp1, CONST_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp2, CONST_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp3, CONST_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == 15) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/15)**2 = 64/225, which we partially * fold into the constant multipliers and final shifting: * cK now represents sqrt(2) * cos(K*pi/30) * 256/225. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*6]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*5]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*4]; tmp3 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*3]; tmp4 = dataptr[DCTSIZE*4] + wsptr[DCTSIZE*2]; tmp5 = dataptr[DCTSIZE*5] + wsptr[DCTSIZE*1]; tmp6 = dataptr[DCTSIZE*6] + wsptr[DCTSIZE*0]; tmp7 = dataptr[DCTSIZE*7]; tmp10 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*6]; tmp11 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*5]; tmp12 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*4]; tmp13 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*3]; tmp14 = dataptr[DCTSIZE*4] - wsptr[DCTSIZE*2]; tmp15 = dataptr[DCTSIZE*5] - wsptr[DCTSIZE*1]; tmp16 = dataptr[DCTSIZE*6] - wsptr[DCTSIZE*0]; z1 = tmp0 + tmp4 + tmp5; z2 = tmp1 + tmp3 + tmp6; z3 = tmp2 + tmp7; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(z1 + z2 + z3, FIX(1.137777778)), /* 256/225 */ CONST_BITS+2); z3 += z3; dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(MULTIPLY(z1 - z3, FIX(1.301757503)) - /* c6 */ MULTIPLY(z2 - z3, FIX(0.497227121)), /* c12 */ CONST_BITS+2); tmp2 += ((tmp1 + tmp4) >> 1) - tmp7 - tmp7; z1 = MULTIPLY(tmp3 - tmp2, FIX(1.742091575)) - /* c2+c14 */ MULTIPLY(tmp6 - tmp2, FIX(2.546621957)); /* c4+c8 */ z2 = MULTIPLY(tmp5 - tmp2, FIX(0.908479156)) - /* c8-c14 */ MULTIPLY(tmp0 - tmp2, FIX(0.103948774)); /* c2-c4 */ z3 = MULTIPLY(tmp0 - tmp3, FIX(1.573898926)) + /* c2 */ MULTIPLY(tmp6 - tmp5, FIX(1.076671805)) + /* c8 */ MULTIPLY(tmp1 - tmp4, FIX(0.899492312)); /* (c6+c12)/2 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + z3, CONST_BITS+2); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(z2 + z3, CONST_BITS+2); /* Odd part */ tmp2 = MULTIPLY(tmp10 - tmp12 - tmp13 + tmp15 + tmp16, FIX(1.393487498)); /* c5 */ tmp1 = MULTIPLY(tmp10 - tmp14 - tmp15, FIX(1.530307725)) + /* c3 */ MULTIPLY(tmp11 - tmp13 - tmp16, FIX(0.945782187)); /* c9 */ tmp12 = MULTIPLY(tmp12, FIX(1.393487498)); /* c5 */ tmp4 = MULTIPLY(tmp10 - tmp16, FIX(1.600246161)) + /* c1 */ MULTIPLY(tmp11 + tmp14, FIX(1.530307725)) + /* c3 */ MULTIPLY(tmp13 + tmp15, FIX(0.654463974)); /* c11 */ tmp0 = MULTIPLY(tmp13, FIX(0.541301207)) - /* c7-c11 */ MULTIPLY(tmp14, FIX(0.584525538)) + /* c3-c9 */ MULTIPLY(tmp16, FIX(1.934788705)) + tmp4 + tmp12; /* c1+c13 */ tmp3 = MULTIPLY(tmp10, - FIX(0.404480980)) - /* -(c1-c7) */ MULTIPLY(tmp11, FIX(2.476089912)) - /* c3+c9 */ MULTIPLY(tmp15, FIX(0.989006518)) + tmp4 - tmp12; /* c11+c13 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0, CONST_BITS+2); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1, CONST_BITS+2); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2, CONST_BITS+2); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp3, CONST_BITS+2); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 16x16 sample block. */ GLOBAL(void) jpeg_fdct_16x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16, tmp17; DCTELEM workspace[DCTSIZE2]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* cK represents sqrt(2) * cos(K*pi/32). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[15]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[14]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[13]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[12]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[11]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[10]); tmp6 = GETJSAMPLE(elemptr[6]) + GETJSAMPLE(elemptr[9]); tmp7 = GETJSAMPLE(elemptr[7]) + GETJSAMPLE(elemptr[8]); tmp10 = tmp0 + tmp7; tmp14 = tmp0 - tmp7; tmp11 = tmp1 + tmp6; tmp15 = tmp1 - tmp6; tmp12 = tmp2 + tmp5; tmp16 = tmp2 - tmp5; tmp13 = tmp3 + tmp4; tmp17 = tmp3 - tmp4; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[15]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[14]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[13]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[12]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[11]); tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[10]); tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[9]); tmp7 = GETJSAMPLE(elemptr[7]) - GETJSAMPLE(elemptr[8]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 + tmp12 + tmp13 - 16 * CENTERJSAMPLE) << PASS1_BITS); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(1.306562965)) + /* c4[16] = c2[8] */ MULTIPLY(tmp11 - tmp12, FIX_0_541196100), /* c12[16] = c6[8] */ CONST_BITS-PASS1_BITS); tmp10 = MULTIPLY(tmp17 - tmp15, FIX(0.275899379)) + /* c14[16] = c7[8] */ MULTIPLY(tmp14 - tmp16, FIX(1.387039845)); /* c2[16] = c1[8] */ dataptr[2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp15, FIX(1.451774982)) /* c6+c14 */ + MULTIPLY(tmp16, FIX(2.172734804)), /* c2+c10 */ CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(0.211164243)) /* c2-c6 */ - MULTIPLY(tmp17, FIX(1.061594338)), /* c10+c14 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp11 = MULTIPLY(tmp0 + tmp1, FIX(1.353318001)) + /* c3 */ MULTIPLY(tmp6 - tmp7, FIX(0.410524528)); /* c13 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(1.247225013)) + /* c5 */ MULTIPLY(tmp5 + tmp7, FIX(0.666655658)); /* c11 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(1.093201867)) + /* c7 */ MULTIPLY(tmp4 - tmp7, FIX(0.897167586)); /* c9 */ tmp14 = MULTIPLY(tmp1 + tmp2, FIX(0.138617169)) + /* c15 */ MULTIPLY(tmp6 - tmp5, FIX(1.407403738)); /* c1 */ tmp15 = MULTIPLY(tmp1 + tmp3, - FIX(0.666655658)) + /* -c11 */ MULTIPLY(tmp4 + tmp6, - FIX(1.247225013)); /* -c5 */ tmp16 = MULTIPLY(tmp2 + tmp3, - FIX(1.353318001)) + /* -c3 */ MULTIPLY(tmp5 - tmp4, FIX(0.410524528)); /* c13 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(tmp0, FIX(2.286341144)) + /* c7+c5+c3-c1 */ MULTIPLY(tmp7, FIX(0.779653625)); /* c15+c13-c11+c9 */ tmp11 += tmp14 + tmp15 + MULTIPLY(tmp1, FIX(0.071888074)) /* c9-c3-c15+c11 */ - MULTIPLY(tmp6, FIX(1.663905119)); /* c7+c13+c1-c5 */ tmp12 += tmp14 + tmp16 - MULTIPLY(tmp2, FIX(1.125726048)) /* c7+c5+c15-c3 */ + MULTIPLY(tmp5, FIX(1.227391138)); /* c9-c11+c1-c13 */ tmp13 += tmp15 + tmp16 + MULTIPLY(tmp3, FIX(1.065388962)) /* c15+c3+c11-c7 */ + MULTIPLY(tmp4, FIX(2.167985692)); /* c1+c13+c5-c9 */ dataptr[1] = (DCTELEM) DESCALE(tmp10, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp11, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp12, CONST_BITS-PASS1_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp13, CONST_BITS-PASS1_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == DCTSIZE * 2) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/16)**2 = 1/2**2. */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*4]; tmp4 = dataptr[DCTSIZE*4] + wsptr[DCTSIZE*3]; tmp5 = dataptr[DCTSIZE*5] + wsptr[DCTSIZE*2]; tmp6 = dataptr[DCTSIZE*6] + wsptr[DCTSIZE*1]; tmp7 = dataptr[DCTSIZE*7] + wsptr[DCTSIZE*0]; tmp10 = tmp0 + tmp7; tmp14 = tmp0 - tmp7; tmp11 = tmp1 + tmp6; tmp15 = tmp1 - tmp6; tmp12 = tmp2 + tmp5; tmp16 = tmp2 - tmp5; tmp13 = tmp3 + tmp4; tmp17 = tmp3 - tmp4; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*4]; tmp4 = dataptr[DCTSIZE*4] - wsptr[DCTSIZE*3]; tmp5 = dataptr[DCTSIZE*5] - wsptr[DCTSIZE*2]; tmp6 = dataptr[DCTSIZE*6] - wsptr[DCTSIZE*1]; tmp7 = dataptr[DCTSIZE*7] - wsptr[DCTSIZE*0]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11 + tmp12 + tmp13, PASS1_BITS+2); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(1.306562965)) + /* c4[16] = c2[8] */ MULTIPLY(tmp11 - tmp12, FIX_0_541196100), /* c12[16] = c6[8] */ CONST_BITS+PASS1_BITS+2); tmp10 = MULTIPLY(tmp17 - tmp15, FIX(0.275899379)) + /* c14[16] = c7[8] */ MULTIPLY(tmp14 - tmp16, FIX(1.387039845)); /* c2[16] = c1[8] */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp15, FIX(1.451774982)) /* c6+c14 */ + MULTIPLY(tmp16, FIX(2.172734804)), /* c2+10 */ CONST_BITS+PASS1_BITS+2); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(0.211164243)) /* c2-c6 */ - MULTIPLY(tmp17, FIX(1.061594338)), /* c10+c14 */ CONST_BITS+PASS1_BITS+2); /* Odd part */ tmp11 = MULTIPLY(tmp0 + tmp1, FIX(1.353318001)) + /* c3 */ MULTIPLY(tmp6 - tmp7, FIX(0.410524528)); /* c13 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(1.247225013)) + /* c5 */ MULTIPLY(tmp5 + tmp7, FIX(0.666655658)); /* c11 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(1.093201867)) + /* c7 */ MULTIPLY(tmp4 - tmp7, FIX(0.897167586)); /* c9 */ tmp14 = MULTIPLY(tmp1 + tmp2, FIX(0.138617169)) + /* c15 */ MULTIPLY(tmp6 - tmp5, FIX(1.407403738)); /* c1 */ tmp15 = MULTIPLY(tmp1 + tmp3, - FIX(0.666655658)) + /* -c11 */ MULTIPLY(tmp4 + tmp6, - FIX(1.247225013)); /* -c5 */ tmp16 = MULTIPLY(tmp2 + tmp3, - FIX(1.353318001)) + /* -c3 */ MULTIPLY(tmp5 - tmp4, FIX(0.410524528)); /* c13 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(tmp0, FIX(2.286341144)) + /* c7+c5+c3-c1 */ MULTIPLY(tmp7, FIX(0.779653625)); /* c15+c13-c11+c9 */ tmp11 += tmp14 + tmp15 + MULTIPLY(tmp1, FIX(0.071888074)) /* c9-c3-c15+c11 */ - MULTIPLY(tmp6, FIX(1.663905119)); /* c7+c13+c1-c5 */ tmp12 += tmp14 + tmp16 - MULTIPLY(tmp2, FIX(1.125726048)) /* c7+c5+c15-c3 */ + MULTIPLY(tmp5, FIX(1.227391138)); /* c9-c11+c1-c13 */ tmp13 += tmp15 + tmp16 + MULTIPLY(tmp3, FIX(1.065388962)) /* c15+c3+c11-c7 */ + MULTIPLY(tmp4, FIX(2.167985692)); /* c1+c13+c5-c9 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10, CONST_BITS+PASS1_BITS+2); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp11, CONST_BITS+PASS1_BITS+2); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp12, CONST_BITS+PASS1_BITS+2); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp13, CONST_BITS+PASS1_BITS+2); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 16x8 sample block. * * 16-point FDCT in pass 1 (rows), 8-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_16x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16, tmp17; INT32 z1; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 16-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/32). */ dataptr = data; ctr = 0; for (ctr = 0; ctr < DCTSIZE; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[15]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[14]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[13]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[12]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[11]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[10]); tmp6 = GETJSAMPLE(elemptr[6]) + GETJSAMPLE(elemptr[9]); tmp7 = GETJSAMPLE(elemptr[7]) + GETJSAMPLE(elemptr[8]); tmp10 = tmp0 + tmp7; tmp14 = tmp0 - tmp7; tmp11 = tmp1 + tmp6; tmp15 = tmp1 - tmp6; tmp12 = tmp2 + tmp5; tmp16 = tmp2 - tmp5; tmp13 = tmp3 + tmp4; tmp17 = tmp3 - tmp4; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[15]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[14]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[13]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[12]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[11]); tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[10]); tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[9]); tmp7 = GETJSAMPLE(elemptr[7]) - GETJSAMPLE(elemptr[8]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 + tmp12 + tmp13 - 16 * CENTERJSAMPLE) << PASS1_BITS); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(1.306562965)) + /* c4[16] = c2[8] */ MULTIPLY(tmp11 - tmp12, FIX_0_541196100), /* c12[16] = c6[8] */ CONST_BITS-PASS1_BITS); tmp10 = MULTIPLY(tmp17 - tmp15, FIX(0.275899379)) + /* c14[16] = c7[8] */ MULTIPLY(tmp14 - tmp16, FIX(1.387039845)); /* c2[16] = c1[8] */ dataptr[2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp15, FIX(1.451774982)) /* c6+c14 */ + MULTIPLY(tmp16, FIX(2.172734804)), /* c2+c10 */ CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(0.211164243)) /* c2-c6 */ - MULTIPLY(tmp17, FIX(1.061594338)), /* c10+c14 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp11 = MULTIPLY(tmp0 + tmp1, FIX(1.353318001)) + /* c3 */ MULTIPLY(tmp6 - tmp7, FIX(0.410524528)); /* c13 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(1.247225013)) + /* c5 */ MULTIPLY(tmp5 + tmp7, FIX(0.666655658)); /* c11 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(1.093201867)) + /* c7 */ MULTIPLY(tmp4 - tmp7, FIX(0.897167586)); /* c9 */ tmp14 = MULTIPLY(tmp1 + tmp2, FIX(0.138617169)) + /* c15 */ MULTIPLY(tmp6 - tmp5, FIX(1.407403738)); /* c1 */ tmp15 = MULTIPLY(tmp1 + tmp3, - FIX(0.666655658)) + /* -c11 */ MULTIPLY(tmp4 + tmp6, - FIX(1.247225013)); /* -c5 */ tmp16 = MULTIPLY(tmp2 + tmp3, - FIX(1.353318001)) + /* -c3 */ MULTIPLY(tmp5 - tmp4, FIX(0.410524528)); /* c13 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(tmp0, FIX(2.286341144)) + /* c7+c5+c3-c1 */ MULTIPLY(tmp7, FIX(0.779653625)); /* c15+c13-c11+c9 */ tmp11 += tmp14 + tmp15 + MULTIPLY(tmp1, FIX(0.071888074)) /* c9-c3-c15+c11 */ - MULTIPLY(tmp6, FIX(1.663905119)); /* c7+c13+c1-c5 */ tmp12 += tmp14 + tmp16 - MULTIPLY(tmp2, FIX(1.125726048)) /* c7+c5+c15-c3 */ + MULTIPLY(tmp5, FIX(1.227391138)); /* c9-c11+c1-c13 */ tmp13 += tmp15 + tmp16 + MULTIPLY(tmp3, FIX(1.065388962)) /* c15+c3+c11-c7 */ + MULTIPLY(tmp4, FIX(2.167985692)); /* c1+c13+c5-c9 */ dataptr[1] = (DCTELEM) DESCALE(tmp10, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp11, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp12, CONST_BITS-PASS1_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp13, CONST_BITS-PASS1_BITS); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by 8/16 = 1/2. */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part per LL&M figure 1 --- note that published figure is faulty; * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; tmp10 = tmp0 + tmp3; tmp12 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp13 = tmp1 - tmp2; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS+1); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS+1); z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS+PASS1_BITS+1); /* Odd part per figure 8 --- note paper omits factor of sqrt(2). * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). * i0..i3 in the paper are tmp0..tmp3 here. */ tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp0 + tmp2; tmp13 = tmp1 + tmp3; z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602); /* c3 */ tmp0 = MULTIPLY(tmp0, FIX_1_501321110); /* c1+c3-c5-c7 */ tmp1 = MULTIPLY(tmp1, FIX_3_072711026); /* c1+c3+c5-c7 */ tmp2 = MULTIPLY(tmp2, FIX_2_053119869); /* c1+c3-c5+c7 */ tmp3 = MULTIPLY(tmp3, FIX_0_298631336); /* -c1+c3+c5-c7 */ tmp10 = MULTIPLY(tmp10, - FIX_0_899976223); /* c7-c3 */ tmp11 = MULTIPLY(tmp11, - FIX_2_562915447); /* -c1-c3 */ tmp12 = MULTIPLY(tmp12, - FIX_0_390180644); /* c5-c3 */ tmp13 = MULTIPLY(tmp13, - FIX_1_961570560); /* -c3-c5 */ tmp12 += z1; tmp13 += z1; dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0 + tmp10 + tmp12, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1 + tmp11 + tmp13, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2 + tmp11 + tmp12, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp3 + tmp10 + tmp13, CONST_BITS+PASS1_BITS+1); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 14x7 sample block. * * 14-point FDCT in pass 1 (rows), 7-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_14x7 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 z1, z2, z3; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Zero bottom row of output coefficient block. */ MEMZERO(&data[DCTSIZE*7], SIZEOF(DCTELEM) * DCTSIZE); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 14-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/28). */ dataptr = data; for (ctr = 0; ctr < 7; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[13]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[12]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[11]); tmp13 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[10]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[9]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[8]); tmp6 = GETJSAMPLE(elemptr[6]) + GETJSAMPLE(elemptr[7]); tmp10 = tmp0 + tmp6; tmp14 = tmp0 - tmp6; tmp11 = tmp1 + tmp5; tmp15 = tmp1 - tmp5; tmp12 = tmp2 + tmp4; tmp16 = tmp2 - tmp4; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[13]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[12]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[11]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[10]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[9]); tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[8]); tmp6 = GETJSAMPLE(elemptr[6]) - GETJSAMPLE(elemptr[7]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 + tmp12 + tmp13 - 14 * CENTERJSAMPLE) << PASS1_BITS); tmp13 += tmp13; dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(1.274162392)) + /* c4 */ MULTIPLY(tmp11 - tmp13, FIX(0.314692123)) - /* c12 */ MULTIPLY(tmp12 - tmp13, FIX(0.881747734)), /* c8 */ CONST_BITS-PASS1_BITS); tmp10 = MULTIPLY(tmp14 + tmp15, FIX(1.105676686)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp14, FIX(0.273079590)) /* c2-c6 */ + MULTIPLY(tmp16, FIX(0.613604268)), /* c10 */ CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp15, FIX(1.719280954)) /* c6+c10 */ - MULTIPLY(tmp16, FIX(1.378756276)), /* c2 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp10 = tmp1 + tmp2; tmp11 = tmp5 - tmp4; dataptr[7] = (DCTELEM) ((tmp0 - tmp10 + tmp3 - tmp11 - tmp6) << PASS1_BITS); tmp3 <<= CONST_BITS; tmp10 = MULTIPLY(tmp10, - FIX(0.158341681)); /* -c13 */ tmp11 = MULTIPLY(tmp11, FIX(1.405321284)); /* c1 */ tmp10 += tmp11 - tmp3; tmp11 = MULTIPLY(tmp0 + tmp2, FIX(1.197448846)) + /* c5 */ MULTIPLY(tmp4 + tmp6, FIX(0.752406978)); /* c9 */ dataptr[5] = (DCTELEM) DESCALE(tmp10 + tmp11 - MULTIPLY(tmp2, FIX(2.373959773)) /* c3+c5-c13 */ + MULTIPLY(tmp4, FIX(1.119999435)), /* c1+c11-c9 */ CONST_BITS-PASS1_BITS); tmp12 = MULTIPLY(tmp0 + tmp1, FIX(1.334852607)) + /* c3 */ MULTIPLY(tmp5 - tmp6, FIX(0.467085129)); /* c11 */ dataptr[3] = (DCTELEM) DESCALE(tmp10 + tmp12 - MULTIPLY(tmp1, FIX(0.424103948)) /* c3-c9-c13 */ - MULTIPLY(tmp5, FIX(3.069855259)), /* c1+c5+c11 */ CONST_BITS-PASS1_BITS); dataptr[1] = (DCTELEM) DESCALE(tmp11 + tmp12 + tmp3 + tmp6 - MULTIPLY(tmp0 + tmp6, FIX(1.126980169)), /* c3+c5-c1 */ CONST_BITS-PASS1_BITS); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/14)*(8/7) = 32/49, which we * partially fold into the constant multipliers and final shifting: * 7-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/14) * 64/49. */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*6]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*5]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*4]; tmp3 = dataptr[DCTSIZE*3]; tmp10 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*6]; tmp11 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*5]; tmp12 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*4]; z1 = tmp0 + tmp2; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(z1 + tmp1 + tmp3, FIX(1.306122449)), /* 64/49 */ CONST_BITS+PASS1_BITS+1); tmp3 += tmp3; z1 -= tmp3; z1 -= tmp3; z1 = MULTIPLY(z1, FIX(0.461784020)); /* (c2+c6-c4)/2 */ z2 = MULTIPLY(tmp0 - tmp2, FIX(1.202428084)); /* (c2+c4-c6)/2 */ z3 = MULTIPLY(tmp1 - tmp2, FIX(0.411026446)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + z2 + z3, CONST_BITS+PASS1_BITS+1); z1 -= z2; z2 = MULTIPLY(tmp0 - tmp1, FIX(1.151670509)); /* c4 */ dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(z2 + z3 - MULTIPLY(tmp1 - tmp3, FIX(0.923568041)), /* c2+c6-c4 */ CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + z2, CONST_BITS+PASS1_BITS+1); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(1.221765677)); /* (c3+c1-c5)/2 */ tmp2 = MULTIPLY(tmp10 - tmp11, FIX(0.222383464)); /* (c3+c5-c1)/2 */ tmp0 = tmp1 - tmp2; tmp1 += tmp2; tmp2 = MULTIPLY(tmp11 + tmp12, - FIX(1.800824523)); /* -c1 */ tmp1 += tmp2; tmp3 = MULTIPLY(tmp10 + tmp12, FIX(0.801442310)); /* c5 */ tmp0 += tmp3; tmp2 += tmp3 + MULTIPLY(tmp12, FIX(2.443531355)); /* c3+c1-c5 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp0, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp1, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp2, CONST_BITS+PASS1_BITS+1); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 12x6 sample block. * * 12-point FDCT in pass 1 (rows), 6-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_12x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Zero 2 bottom rows of output coefficient block. */ MEMZERO(&data[DCTSIZE*6], SIZEOF(DCTELEM) * DCTSIZE * 2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 12-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/24). */ dataptr = data; for (ctr = 0; ctr < 6; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[11]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[10]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[9]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[8]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[7]); tmp5 = GETJSAMPLE(elemptr[5]) + GETJSAMPLE(elemptr[6]); tmp10 = tmp0 + tmp5; tmp13 = tmp0 - tmp5; tmp11 = tmp1 + tmp4; tmp14 = tmp1 - tmp4; tmp12 = tmp2 + tmp3; tmp15 = tmp2 - tmp3; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[11]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[10]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[9]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[8]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[7]); tmp5 = GETJSAMPLE(elemptr[5]) - GETJSAMPLE(elemptr[6]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 + tmp12 - 12 * CENTERJSAMPLE) << PASS1_BITS); dataptr[6] = (DCTELEM) ((tmp13 - tmp14 - tmp15) << PASS1_BITS); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.224744871)), /* c4 */ CONST_BITS-PASS1_BITS); dataptr[2] = (DCTELEM) DESCALE(tmp14 - tmp15 + MULTIPLY(tmp13 + tmp15, FIX(1.366025404)), /* c2 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp1 + tmp4, FIX_0_541196100); /* c9 */ tmp14 = tmp10 + MULTIPLY(tmp1, FIX_0_765366865); /* c3-c9 */ tmp15 = tmp10 - MULTIPLY(tmp4, FIX_1_847759065); /* c3+c9 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(1.121971054)); /* c5 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(0.860918669)); /* c7 */ tmp10 = tmp12 + tmp13 + tmp14 - MULTIPLY(tmp0, FIX(0.580774953)) /* c5+c7-c1 */ + MULTIPLY(tmp5, FIX(0.184591911)); /* c11 */ tmp11 = MULTIPLY(tmp2 + tmp3, - FIX(0.184591911)); /* -c11 */ tmp12 += tmp11 - tmp15 - MULTIPLY(tmp2, FIX(2.339493912)) /* c1+c5-c11 */ + MULTIPLY(tmp5, FIX(0.860918669)); /* c7 */ tmp13 += tmp11 - tmp14 + MULTIPLY(tmp3, FIX(0.725788011)) /* c1+c11-c7 */ - MULTIPLY(tmp5, FIX(1.121971054)); /* c5 */ tmp11 = tmp15 + MULTIPLY(tmp0 - tmp3, FIX(1.306562965)) /* c3 */ - MULTIPLY(tmp2 + tmp5, FIX_0_541196100); /* c9 */ dataptr[1] = (DCTELEM) DESCALE(tmp10, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp11, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp12, CONST_BITS-PASS1_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp13, CONST_BITS-PASS1_BITS); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/12)*(8/6) = 8/9, which we * partially fold into the constant multipliers and final shifting: * 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12) * 16/9. */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*5]; tmp11 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*3]; tmp10 = tmp0 + tmp2; tmp12 = tmp0 - tmp2; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*3]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp12, FIX(2.177324216)), /* c2 */ CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp11, FIX(1.257078722)), /* c4 */ CONST_BITS+PASS1_BITS+1); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp2, FIX(0.650711829)); /* c5 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0 + tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp2, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp2 - tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS+1); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 10x5 sample block. * * 10-point FDCT in pass 1 (rows), 5-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_10x5 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4; INT32 tmp10, tmp11, tmp12, tmp13, tmp14; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Zero 3 bottom rows of output coefficient block. */ MEMZERO(&data[DCTSIZE*5], SIZEOF(DCTELEM) * DCTSIZE * 3); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 10-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/20). */ dataptr = data; for (ctr = 0; ctr < 5; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[9]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[8]); tmp12 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[7]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[6]); tmp4 = GETJSAMPLE(elemptr[4]) + GETJSAMPLE(elemptr[5]); tmp10 = tmp0 + tmp4; tmp13 = tmp0 - tmp4; tmp11 = tmp1 + tmp3; tmp14 = tmp1 - tmp3; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[9]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[8]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[7]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[6]); tmp4 = GETJSAMPLE(elemptr[4]) - GETJSAMPLE(elemptr[5]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 + tmp12 - 10 * CENTERJSAMPLE) << PASS1_BITS); tmp12 += tmp12; dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.144122806)) - /* c4 */ MULTIPLY(tmp11 - tmp12, FIX(0.437016024)), /* c8 */ CONST_BITS-PASS1_BITS); tmp10 = MULTIPLY(tmp13 + tmp14, FIX(0.831253876)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp13, FIX(0.513743148)), /* c2-c6 */ CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(2.176250899)), /* c2+c6 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp10 = tmp0 + tmp4; tmp11 = tmp1 - tmp3; dataptr[5] = (DCTELEM) ((tmp10 - tmp11 - tmp2) << PASS1_BITS); tmp2 <<= CONST_BITS; dataptr[1] = (DCTELEM) DESCALE(MULTIPLY(tmp0, FIX(1.396802247)) + /* c1 */ MULTIPLY(tmp1, FIX(1.260073511)) + tmp2 + /* c3 */ MULTIPLY(tmp3, FIX(0.642039522)) + /* c7 */ MULTIPLY(tmp4, FIX(0.221231742)), /* c9 */ CONST_BITS-PASS1_BITS); tmp12 = MULTIPLY(tmp0 - tmp4, FIX(0.951056516)) - /* (c3+c7)/2 */ MULTIPLY(tmp1 + tmp3, FIX(0.587785252)); /* (c1-c9)/2 */ tmp13 = MULTIPLY(tmp10 + tmp11, FIX(0.309016994)) + /* (c3-c7)/2 */ (tmp11 << (CONST_BITS - 1)) - tmp2; dataptr[3] = (DCTELEM) DESCALE(tmp12 + tmp13, CONST_BITS-PASS1_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp12 - tmp13, CONST_BITS-PASS1_BITS); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/10)*(8/5) = 32/25, which we * fold into the constant multipliers: * 5-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/10) * 32/25. */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*4]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*3]; tmp2 = dataptr[DCTSIZE*2]; tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*4]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*3]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp2, FIX(1.28)), /* 32/25 */ CONST_BITS+PASS1_BITS); tmp11 = MULTIPLY(tmp11, FIX(1.011928851)); /* (c2+c4)/2 */ tmp10 -= tmp2 << 2; tmp10 = MULTIPLY(tmp10, FIX(0.452548340)); /* (c2-c4)/2 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp11 + tmp10, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp11 - tmp10, CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp1, FIX(1.064004961)); /* c3 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0, FIX(0.657591230)), /* c1-c3 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp1, FIX(2.785601151)), /* c1+c3 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on an 8x4 sample block. * * 8-point FDCT in pass 1 (rows), 4-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_8x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Zero 4 bottom rows of output coefficient block. */ MEMZERO(&data[DCTSIZE*4], SIZEOF(DCTELEM) * DCTSIZE * 4); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We must also scale the output by 8/4 = 2, which we add here. */ dataptr = data; for (ctr = 0; ctr < 4; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part per LL&M figure 1 --- note that published figure is faulty; * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[6]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[5]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[4]); tmp10 = tmp0 + tmp3; tmp12 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp13 = tmp1 - tmp2; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[7]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[6]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << (PASS1_BITS+1)); dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << (PASS1_BITS+1)); z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-2); dataptr[2] = (DCTELEM) RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS-PASS1_BITS-1); dataptr[6] = (DCTELEM) RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS-PASS1_BITS-1); /* Odd part per figure 8 --- note paper omits factor of sqrt(2). * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). * i0..i3 in the paper are tmp0..tmp3 here. */ tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp0 + tmp2; tmp13 = tmp1 + tmp3; z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602); /* c3 */ /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS-PASS1_BITS-2); tmp0 = MULTIPLY(tmp0, FIX_1_501321110); /* c1+c3-c5-c7 */ tmp1 = MULTIPLY(tmp1, FIX_3_072711026); /* c1+c3+c5-c7 */ tmp2 = MULTIPLY(tmp2, FIX_2_053119869); /* c1+c3-c5+c7 */ tmp3 = MULTIPLY(tmp3, FIX_0_298631336); /* -c1+c3+c5-c7 */ tmp10 = MULTIPLY(tmp10, - FIX_0_899976223); /* c7-c3 */ tmp11 = MULTIPLY(tmp11, - FIX_2_562915447); /* -c1-c3 */ tmp12 = MULTIPLY(tmp12, - FIX_0_390180644); /* c5-c3 */ tmp13 = MULTIPLY(tmp13, - FIX_1_961570560); /* -c3-c5 */ tmp12 += z1; tmp13 += z1; dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS-PASS1_BITS-1); dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS-PASS1_BITS-1); dataptr[5] = (DCTELEM) RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS-PASS1_BITS-1); dataptr[7] = (DCTELEM) RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS-PASS1_BITS-1); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * 4-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). */ dataptr = data; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*3] + (ONE << (PASS1_BITS-1)); tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*2]; tmp10 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*3]; tmp11 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*2]; dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp1, PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) RIGHT_SHIFT(tmp0 - tmp1, PASS1_BITS); /* Odd part */ tmp0 = MULTIPLY(tmp10 + tmp11, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS+PASS1_BITS-1); dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0 + MULTIPLY(tmp10, FIX_0_765366865), /* c2-c6 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp0 - MULTIPLY(tmp11, FIX_1_847759065), /* c2+c6 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 6x3 sample block. * * 6-point FDCT in pass 1 (rows), 3-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_6x3 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2; INT32 tmp10, tmp11, tmp12; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We scale the results further by 2 as part of output adaption */ /* scaling for different DCT size. */ /* 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */ dataptr = data; for (ctr = 0; ctr < 3; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[5]); tmp11 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[4]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[3]); tmp10 = tmp0 + tmp2; tmp12 = tmp0 - tmp2; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[5]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[4]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[3]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 6 * CENTERJSAMPLE) << (PASS1_BITS+1)); dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp12, FIX(1.224744871)), /* c2 */ CONST_BITS-PASS1_BITS-1); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp11, FIX(0.707106781)), /* c4 */ CONST_BITS-PASS1_BITS-1); /* Odd part */ tmp10 = DESCALE(MULTIPLY(tmp0 + tmp2, FIX(0.366025404)), /* c5 */ CONST_BITS-PASS1_BITS-1); dataptr[1] = (DCTELEM) (tmp10 + ((tmp0 + tmp1) << (PASS1_BITS+1))); dataptr[3] = (DCTELEM) ((tmp0 - tmp1 - tmp2) << (PASS1_BITS+1)); dataptr[5] = (DCTELEM) (tmp10 + ((tmp2 - tmp1) << (PASS1_BITS+1))); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/6)*(8/3) = 32/9, which we partially * fold into the constant multipliers (other part was done in pass 1): * 3-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/6) * 16/9. */ dataptr = data; for (ctr = 0; ctr < 6; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*2]; tmp1 = dataptr[DCTSIZE*1]; tmp2 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*2]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp0 + tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp1, FIX(1.257078722)), /* c2 */ CONST_BITS+PASS1_BITS); /* Odd part */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(MULTIPLY(tmp2, FIX(2.177324216)), /* c1 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 4x2 sample block. * * 4-point FDCT in pass 1 (rows), 2-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_4x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1; INT32 tmp10, tmp11; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We must also scale the output by (8/4)*(8/2) = 2**3, which we add here. */ /* 4-point FDCT kernel, */ /* cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT]. */ dataptr = data; for (ctr = 0; ctr < 2; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[3]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[2]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[3]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[2]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 4 * CENTERJSAMPLE) << (PASS1_BITS+3)); dataptr[2] = (DCTELEM) ((tmp0 - tmp1) << (PASS1_BITS+3)); /* Odd part */ tmp0 = MULTIPLY(tmp10 + tmp11, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-4); dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0 + MULTIPLY(tmp10, FIX_0_765366865), /* c2-c6 */ CONST_BITS-PASS1_BITS-3); dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp0 - MULTIPLY(tmp11, FIX_1_847759065), /* c2+c6 */ CONST_BITS-PASS1_BITS-3); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. */ dataptr = data; for (ctr = 0; ctr < 4; ctr++) { /* Even part */ /* Add fudge factor here for final descale. */ tmp0 = dataptr[DCTSIZE*0] + (ONE << (PASS1_BITS-1)); tmp1 = dataptr[DCTSIZE*1]; dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp1, PASS1_BITS); /* Odd part */ dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0 - tmp1, PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 2x1 sample block. * * 2-point FDCT in pass 1 (rows), 1-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_2x1 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1; JSAMPROW elemptr; /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); elemptr = sample_data[0] + start_col; tmp0 = GETJSAMPLE(elemptr[0]); tmp1 = GETJSAMPLE(elemptr[1]); /* We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/2)*(8/1) = 2**5. */ /* Even part */ /* Apply unsigned->signed conversion */ data[0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5); /* Odd part */ data[1] = (DCTELEM) ((tmp0 - tmp1) << 5); } /* * Perform the forward DCT on an 8x16 sample block. * * 8-point FDCT in pass 1 (rows), 16-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_8x16 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16, tmp17; INT32 z1; DCTELEM workspace[DCTSIZE2]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part per LL&M figure 1 --- note that published figure is faulty; * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[7]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[6]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[5]); tmp3 = GETJSAMPLE(elemptr[3]) + GETJSAMPLE(elemptr[4]); tmp10 = tmp0 + tmp3; tmp12 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp13 = tmp1 - tmp2; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[7]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[6]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[5]); tmp3 = GETJSAMPLE(elemptr[3]) - GETJSAMPLE(elemptr[4]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 8 * CENTERJSAMPLE) << PASS1_BITS); dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS); z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); dataptr[2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS-PASS1_BITS); /* Odd part per figure 8 --- note paper omits factor of sqrt(2). * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). * i0..i3 in the paper are tmp0..tmp3 here. */ tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp0 + tmp2; tmp13 = tmp1 + tmp3; z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602); /* c3 */ tmp0 = MULTIPLY(tmp0, FIX_1_501321110); /* c1+c3-c5-c7 */ tmp1 = MULTIPLY(tmp1, FIX_3_072711026); /* c1+c3+c5-c7 */ tmp2 = MULTIPLY(tmp2, FIX_2_053119869); /* c1+c3-c5+c7 */ tmp3 = MULTIPLY(tmp3, FIX_0_298631336); /* -c1+c3+c5-c7 */ tmp10 = MULTIPLY(tmp10, - FIX_0_899976223); /* c7-c3 */ tmp11 = MULTIPLY(tmp11, - FIX_2_562915447); /* -c1-c3 */ tmp12 = MULTIPLY(tmp12, - FIX_0_390180644); /* c5-c3 */ tmp13 = MULTIPLY(tmp13, - FIX_1_961570560); /* -c3-c5 */ tmp12 += z1; tmp13 += z1; dataptr[1] = (DCTELEM) DESCALE(tmp0 + tmp10 + tmp12, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp1 + tmp11 + tmp13, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp2 + tmp11 + tmp12, CONST_BITS-PASS1_BITS); dataptr[7] = (DCTELEM) DESCALE(tmp3 + tmp10 + tmp13, CONST_BITS-PASS1_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == DCTSIZE * 2) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by 8/16 = 1/2. * 16-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/32). */ dataptr = data; wsptr = workspace; for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*4]; tmp4 = dataptr[DCTSIZE*4] + wsptr[DCTSIZE*3]; tmp5 = dataptr[DCTSIZE*5] + wsptr[DCTSIZE*2]; tmp6 = dataptr[DCTSIZE*6] + wsptr[DCTSIZE*1]; tmp7 = dataptr[DCTSIZE*7] + wsptr[DCTSIZE*0]; tmp10 = tmp0 + tmp7; tmp14 = tmp0 - tmp7; tmp11 = tmp1 + tmp6; tmp15 = tmp1 - tmp6; tmp12 = tmp2 + tmp5; tmp16 = tmp2 - tmp5; tmp13 = tmp3 + tmp4; tmp17 = tmp3 - tmp4; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*4]; tmp4 = dataptr[DCTSIZE*4] - wsptr[DCTSIZE*3]; tmp5 = dataptr[DCTSIZE*5] - wsptr[DCTSIZE*2]; tmp6 = dataptr[DCTSIZE*6] - wsptr[DCTSIZE*1]; tmp7 = dataptr[DCTSIZE*7] - wsptr[DCTSIZE*0]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11 + tmp12 + tmp13, PASS1_BITS+1); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(1.306562965)) + /* c4[16] = c2[8] */ MULTIPLY(tmp11 - tmp12, FIX_0_541196100), /* c12[16] = c6[8] */ CONST_BITS+PASS1_BITS+1); tmp10 = MULTIPLY(tmp17 - tmp15, FIX(0.275899379)) + /* c14[16] = c7[8] */ MULTIPLY(tmp14 - tmp16, FIX(1.387039845)); /* c2[16] = c1[8] */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp15, FIX(1.451774982)) /* c6+c14 */ + MULTIPLY(tmp16, FIX(2.172734804)), /* c2+c10 */ CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(0.211164243)) /* c2-c6 */ - MULTIPLY(tmp17, FIX(1.061594338)), /* c10+c14 */ CONST_BITS+PASS1_BITS+1); /* Odd part */ tmp11 = MULTIPLY(tmp0 + tmp1, FIX(1.353318001)) + /* c3 */ MULTIPLY(tmp6 - tmp7, FIX(0.410524528)); /* c13 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(1.247225013)) + /* c5 */ MULTIPLY(tmp5 + tmp7, FIX(0.666655658)); /* c11 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(1.093201867)) + /* c7 */ MULTIPLY(tmp4 - tmp7, FIX(0.897167586)); /* c9 */ tmp14 = MULTIPLY(tmp1 + tmp2, FIX(0.138617169)) + /* c15 */ MULTIPLY(tmp6 - tmp5, FIX(1.407403738)); /* c1 */ tmp15 = MULTIPLY(tmp1 + tmp3, - FIX(0.666655658)) + /* -c11 */ MULTIPLY(tmp4 + tmp6, - FIX(1.247225013)); /* -c5 */ tmp16 = MULTIPLY(tmp2 + tmp3, - FIX(1.353318001)) + /* -c3 */ MULTIPLY(tmp5 - tmp4, FIX(0.410524528)); /* c13 */ tmp10 = tmp11 + tmp12 + tmp13 - MULTIPLY(tmp0, FIX(2.286341144)) + /* c7+c5+c3-c1 */ MULTIPLY(tmp7, FIX(0.779653625)); /* c15+c13-c11+c9 */ tmp11 += tmp14 + tmp15 + MULTIPLY(tmp1, FIX(0.071888074)) /* c9-c3-c15+c11 */ - MULTIPLY(tmp6, FIX(1.663905119)); /* c7+c13+c1-c5 */ tmp12 += tmp14 + tmp16 - MULTIPLY(tmp2, FIX(1.125726048)) /* c7+c5+c15-c3 */ + MULTIPLY(tmp5, FIX(1.227391138)); /* c9-c11+c1-c13 */ tmp13 += tmp15 + tmp16 + MULTIPLY(tmp3, FIX(1.065388962)) /* c15+c3+c11-c7 */ + MULTIPLY(tmp4, FIX(2.167985692)); /* c1+c13+c5-c9 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp11, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp12, CONST_BITS+PASS1_BITS+1); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp13, CONST_BITS+PASS1_BITS+1); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 7x14 sample block. * * 7-point FDCT in pass 1 (rows), 14-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_7x14 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15, tmp16; INT32 z1, z2, z3; DCTELEM workspace[8*6]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 7-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/14). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[6]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[5]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[4]); tmp3 = GETJSAMPLE(elemptr[3]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[6]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[5]); tmp12 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[4]); z1 = tmp0 + tmp2; /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((z1 + tmp1 + tmp3 - 7 * CENTERJSAMPLE) << PASS1_BITS); tmp3 += tmp3; z1 -= tmp3; z1 -= tmp3; z1 = MULTIPLY(z1, FIX(0.353553391)); /* (c2+c6-c4)/2 */ z2 = MULTIPLY(tmp0 - tmp2, FIX(0.920609002)); /* (c2+c4-c6)/2 */ z3 = MULTIPLY(tmp1 - tmp2, FIX(0.314692123)); /* c6 */ dataptr[2] = (DCTELEM) DESCALE(z1 + z2 + z3, CONST_BITS-PASS1_BITS); z1 -= z2; z2 = MULTIPLY(tmp0 - tmp1, FIX(0.881747734)); /* c4 */ dataptr[4] = (DCTELEM) DESCALE(z2 + z3 - MULTIPLY(tmp1 - tmp3, FIX(0.707106781)), /* c2+c6-c4 */ CONST_BITS-PASS1_BITS); dataptr[6] = (DCTELEM) DESCALE(z1 + z2, CONST_BITS-PASS1_BITS); /* Odd part */ tmp1 = MULTIPLY(tmp10 + tmp11, FIX(0.935414347)); /* (c3+c1-c5)/2 */ tmp2 = MULTIPLY(tmp10 - tmp11, FIX(0.170262339)); /* (c3+c5-c1)/2 */ tmp0 = tmp1 - tmp2; tmp1 += tmp2; tmp2 = MULTIPLY(tmp11 + tmp12, - FIX(1.378756276)); /* -c1 */ tmp1 += tmp2; tmp3 = MULTIPLY(tmp10 + tmp12, FIX(0.613604268)); /* c5 */ tmp0 += tmp3; tmp2 += tmp3 + MULTIPLY(tmp12, FIX(1.870828693)); /* c3+c1-c5 */ dataptr[1] = (DCTELEM) DESCALE(tmp0, CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp1, CONST_BITS-PASS1_BITS); dataptr[5] = (DCTELEM) DESCALE(tmp2, CONST_BITS-PASS1_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == 14) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/7)*(8/14) = 32/49, which we * fold into the constant multipliers: * 14-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/28) * 32/49. */ dataptr = data; wsptr = workspace; for (ctr = 0; ctr < 7; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*3]; tmp13 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*2]; tmp4 = dataptr[DCTSIZE*4] + wsptr[DCTSIZE*1]; tmp5 = dataptr[DCTSIZE*5] + wsptr[DCTSIZE*0]; tmp6 = dataptr[DCTSIZE*6] + dataptr[DCTSIZE*7]; tmp10 = tmp0 + tmp6; tmp14 = tmp0 - tmp6; tmp11 = tmp1 + tmp5; tmp15 = tmp1 - tmp5; tmp12 = tmp2 + tmp4; tmp16 = tmp2 - tmp4; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*3]; tmp3 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*2]; tmp4 = dataptr[DCTSIZE*4] - wsptr[DCTSIZE*1]; tmp5 = dataptr[DCTSIZE*5] - wsptr[DCTSIZE*0]; tmp6 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11 + tmp12 + tmp13, FIX(0.653061224)), /* 32/49 */ CONST_BITS+PASS1_BITS); tmp13 += tmp13; dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp13, FIX(0.832106052)) + /* c4 */ MULTIPLY(tmp11 - tmp13, FIX(0.205513223)) - /* c12 */ MULTIPLY(tmp12 - tmp13, FIX(0.575835255)), /* c8 */ CONST_BITS+PASS1_BITS); tmp10 = MULTIPLY(tmp14 + tmp15, FIX(0.722074570)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp14, FIX(0.178337691)) /* c2-c6 */ + MULTIPLY(tmp16, FIX(0.400721155)), /* c10 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp15, FIX(1.122795725)) /* c6+c10 */ - MULTIPLY(tmp16, FIX(0.900412262)), /* c2 */ CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = tmp1 + tmp2; tmp11 = tmp5 - tmp4; dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp10 + tmp3 - tmp11 - tmp6, FIX(0.653061224)), /* 32/49 */ CONST_BITS+PASS1_BITS); tmp3 = MULTIPLY(tmp3 , FIX(0.653061224)); /* 32/49 */ tmp10 = MULTIPLY(tmp10, - FIX(0.103406812)); /* -c13 */ tmp11 = MULTIPLY(tmp11, FIX(0.917760839)); /* c1 */ tmp10 += tmp11 - tmp3; tmp11 = MULTIPLY(tmp0 + tmp2, FIX(0.782007410)) + /* c5 */ MULTIPLY(tmp4 + tmp6, FIX(0.491367823)); /* c9 */ dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 + tmp11 - MULTIPLY(tmp2, FIX(1.550341076)) /* c3+c5-c13 */ + MULTIPLY(tmp4, FIX(0.731428202)), /* c1+c11-c9 */ CONST_BITS+PASS1_BITS); tmp12 = MULTIPLY(tmp0 + tmp1, FIX(0.871740478)) + /* c3 */ MULTIPLY(tmp5 - tmp6, FIX(0.305035186)); /* c11 */ dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp10 + tmp12 - MULTIPLY(tmp1, FIX(0.276965844)) /* c3-c9-c13 */ - MULTIPLY(tmp5, FIX(2.004803435)), /* c1+c5+c11 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp11 + tmp12 + tmp3 - MULTIPLY(tmp0, FIX(0.735987049)) /* c3+c5-c1 */ - MULTIPLY(tmp6, FIX(0.082925825)), /* c9-c11-c13 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 6x12 sample block. * * 6-point FDCT in pass 1 (rows), 12-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_6x12 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5; INT32 tmp10, tmp11, tmp12, tmp13, tmp14, tmp15; DCTELEM workspace[8*4]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[5]); tmp11 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[4]); tmp2 = GETJSAMPLE(elemptr[2]) + GETJSAMPLE(elemptr[3]); tmp10 = tmp0 + tmp2; tmp12 = tmp0 - tmp2; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[5]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[4]); tmp2 = GETJSAMPLE(elemptr[2]) - GETJSAMPLE(elemptr[3]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp11 - 6 * CENTERJSAMPLE) << PASS1_BITS); dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp12, FIX(1.224744871)), /* c2 */ CONST_BITS-PASS1_BITS); dataptr[4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp11, FIX(0.707106781)), /* c4 */ CONST_BITS-PASS1_BITS); /* Odd part */ tmp10 = DESCALE(MULTIPLY(tmp0 + tmp2, FIX(0.366025404)), /* c5 */ CONST_BITS-PASS1_BITS); dataptr[1] = (DCTELEM) (tmp10 + ((tmp0 + tmp1) << PASS1_BITS)); dataptr[3] = (DCTELEM) ((tmp0 - tmp1 - tmp2) << PASS1_BITS); dataptr[5] = (DCTELEM) (tmp10 + ((tmp2 - tmp1) << PASS1_BITS)); ctr++; if (ctr != DCTSIZE) { if (ctr == 12) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/6)*(8/12) = 8/9, which we * fold into the constant multipliers: * 12-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/24) * 8/9. */ dataptr = data; wsptr = workspace; for (ctr = 0; ctr < 6; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*3]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*2]; tmp2 = dataptr[DCTSIZE*2] + wsptr[DCTSIZE*1]; tmp3 = dataptr[DCTSIZE*3] + wsptr[DCTSIZE*0]; tmp4 = dataptr[DCTSIZE*4] + dataptr[DCTSIZE*7]; tmp5 = dataptr[DCTSIZE*5] + dataptr[DCTSIZE*6]; tmp10 = tmp0 + tmp5; tmp13 = tmp0 - tmp5; tmp11 = tmp1 + tmp4; tmp14 = tmp1 - tmp4; tmp12 = tmp2 + tmp3; tmp15 = tmp2 - tmp3; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*3]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*2]; tmp2 = dataptr[DCTSIZE*2] - wsptr[DCTSIZE*1]; tmp3 = dataptr[DCTSIZE*3] - wsptr[DCTSIZE*0]; tmp4 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*7]; tmp5 = dataptr[DCTSIZE*5] - dataptr[DCTSIZE*6]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11 + tmp12, FIX(0.888888889)), /* 8/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(MULTIPLY(tmp13 - tmp14 - tmp15, FIX(0.888888889)), /* 8/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.088662108)), /* c4 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp14 - tmp15, FIX(0.888888889)) + /* 8/9 */ MULTIPLY(tmp13 + tmp15, FIX(1.214244803)), /* c2 */ CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp1 + tmp4, FIX(0.481063200)); /* c9 */ tmp14 = tmp10 + MULTIPLY(tmp1, FIX(0.680326102)); /* c3-c9 */ tmp15 = tmp10 - MULTIPLY(tmp4, FIX(1.642452502)); /* c3+c9 */ tmp12 = MULTIPLY(tmp0 + tmp2, FIX(0.997307603)); /* c5 */ tmp13 = MULTIPLY(tmp0 + tmp3, FIX(0.765261039)); /* c7 */ tmp10 = tmp12 + tmp13 + tmp14 - MULTIPLY(tmp0, FIX(0.516244403)) /* c5+c7-c1 */ + MULTIPLY(tmp5, FIX(0.164081699)); /* c11 */ tmp11 = MULTIPLY(tmp2 + tmp3, - FIX(0.164081699)); /* -c11 */ tmp12 += tmp11 - tmp15 - MULTIPLY(tmp2, FIX(2.079550144)) /* c1+c5-c11 */ + MULTIPLY(tmp5, FIX(0.765261039)); /* c7 */ tmp13 += tmp11 - tmp14 + MULTIPLY(tmp3, FIX(0.645144899)) /* c1+c11-c7 */ - MULTIPLY(tmp5, FIX(0.997307603)); /* c5 */ tmp11 = tmp15 + MULTIPLY(tmp0 - tmp3, FIX(1.161389302)) /* c3 */ - MULTIPLY(tmp2 + tmp5, FIX(0.481063200)); /* c9 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp11, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp12, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp13, CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 5x10 sample block. * * 5-point FDCT in pass 1 (rows), 10-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_5x10 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3, tmp4; INT32 tmp10, tmp11, tmp12, tmp13, tmp14; DCTELEM workspace[8*2]; DCTELEM *dataptr; DCTELEM *wsptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* 5-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/10). */ dataptr = data; ctr = 0; for (;;) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[4]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[3]); tmp2 = GETJSAMPLE(elemptr[2]); tmp10 = tmp0 + tmp1; tmp11 = tmp0 - tmp1; tmp0 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[4]); tmp1 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[3]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp10 + tmp2 - 5 * CENTERJSAMPLE) << PASS1_BITS); tmp11 = MULTIPLY(tmp11, FIX(0.790569415)); /* (c2+c4)/2 */ tmp10 -= tmp2 << 2; tmp10 = MULTIPLY(tmp10, FIX(0.353553391)); /* (c2-c4)/2 */ dataptr[2] = (DCTELEM) DESCALE(tmp11 + tmp10, CONST_BITS-PASS1_BITS); dataptr[4] = (DCTELEM) DESCALE(tmp11 - tmp10, CONST_BITS-PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp1, FIX(0.831253876)); /* c3 */ dataptr[1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0, FIX(0.513743148)), /* c1-c3 */ CONST_BITS-PASS1_BITS); dataptr[3] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp1, FIX(2.176250899)), /* c1+c3 */ CONST_BITS-PASS1_BITS); ctr++; if (ctr != DCTSIZE) { if (ctr == 10) break; /* Done. */ dataptr += DCTSIZE; /* advance pointer to next row */ } else dataptr = workspace; /* switch pointer to extended workspace */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/5)*(8/10) = 32/25, which we * fold into the constant multipliers: * 10-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/20) * 32/25. */ dataptr = data; wsptr = workspace; for (ctr = 0; ctr < 5; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + wsptr[DCTSIZE*1]; tmp1 = dataptr[DCTSIZE*1] + wsptr[DCTSIZE*0]; tmp12 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*7]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*6]; tmp4 = dataptr[DCTSIZE*4] + dataptr[DCTSIZE*5]; tmp10 = tmp0 + tmp4; tmp13 = tmp0 - tmp4; tmp11 = tmp1 + tmp3; tmp14 = tmp1 - tmp3; tmp0 = dataptr[DCTSIZE*0] - wsptr[DCTSIZE*1]; tmp1 = dataptr[DCTSIZE*1] - wsptr[DCTSIZE*0]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*7]; tmp3 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*6]; tmp4 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*5]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11 + tmp12, FIX(1.28)), /* 32/25 */ CONST_BITS+PASS1_BITS); tmp12 += tmp12; dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp12, FIX(1.464477191)) - /* c4 */ MULTIPLY(tmp11 - tmp12, FIX(0.559380511)), /* c8 */ CONST_BITS+PASS1_BITS); tmp10 = MULTIPLY(tmp13 + tmp14, FIX(1.064004961)); /* c6 */ dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp13, FIX(0.657591230)), /* c2-c6 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(tmp10 - MULTIPLY(tmp14, FIX(2.785601151)), /* c2+c6 */ CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = tmp0 + tmp4; tmp11 = tmp1 - tmp3; dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp2, FIX(1.28)), /* 32/25 */ CONST_BITS+PASS1_BITS); tmp2 = MULTIPLY(tmp2, FIX(1.28)); /* 32/25 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(MULTIPLY(tmp0, FIX(1.787906876)) + /* c1 */ MULTIPLY(tmp1, FIX(1.612894094)) + tmp2 + /* c3 */ MULTIPLY(tmp3, FIX(0.821810588)) + /* c7 */ MULTIPLY(tmp4, FIX(0.283176630)), /* c9 */ CONST_BITS+PASS1_BITS); tmp12 = MULTIPLY(tmp0 - tmp4, FIX(1.217352341)) - /* (c3+c7)/2 */ MULTIPLY(tmp1 + tmp3, FIX(0.752365123)); /* (c1-c9)/2 */ tmp13 = MULTIPLY(tmp10 + tmp11, FIX(0.395541753)) + /* (c3-c7)/2 */ MULTIPLY(tmp11, FIX(0.64)) - tmp2; /* 16/25 */ dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp12 + tmp13, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp12 - tmp13, CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ wsptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 4x8 sample block. * * 4-point FDCT in pass 1 (rows), 8-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_4x8 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2, tmp3; INT32 tmp10, tmp11, tmp12, tmp13; INT32 z1; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We must also scale the output by 8/4 = 2, which we add here. */ /* 4-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). */ dataptr = data; for (ctr = 0; ctr < DCTSIZE; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[3]); tmp1 = GETJSAMPLE(elemptr[1]) + GETJSAMPLE(elemptr[2]); tmp10 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[3]); tmp11 = GETJSAMPLE(elemptr[1]) - GETJSAMPLE(elemptr[2]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 4 * CENTERJSAMPLE) << (PASS1_BITS+1)); dataptr[2] = (DCTELEM) ((tmp0 - tmp1) << (PASS1_BITS+1)); /* Odd part */ tmp0 = MULTIPLY(tmp10 + tmp11, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-PASS1_BITS-2); dataptr[1] = (DCTELEM) RIGHT_SHIFT(tmp0 + MULTIPLY(tmp10, FIX_0_765366865), /* c2-c6 */ CONST_BITS-PASS1_BITS-1); dataptr[3] = (DCTELEM) RIGHT_SHIFT(tmp0 - MULTIPLY(tmp11, FIX_1_847759065), /* c2+c6 */ CONST_BITS-PASS1_BITS-1); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. */ dataptr = data; for (ctr = 0; ctr < 4; ctr++) { /* Even part per LL&M figure 1 --- note that published figure is faulty; * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; /* Add fudge factor here for final descale. */ tmp10 = tmp0 + tmp3 + (ONE << (PASS1_BITS-1)); tmp12 = tmp0 - tmp3; tmp11 = tmp1 + tmp2; tmp13 = tmp1 - tmp2; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; tmp3 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; dataptr[DCTSIZE*0] = (DCTELEM) RIGHT_SHIFT(tmp10 + tmp11, PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) RIGHT_SHIFT(tmp10 - tmp11, PASS1_BITS); z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS+PASS1_BITS-1); dataptr[DCTSIZE*2] = (DCTELEM) RIGHT_SHIFT(z1 + MULTIPLY(tmp12, FIX_0_765366865), CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*6] = (DCTELEM) RIGHT_SHIFT(z1 - MULTIPLY(tmp13, FIX_1_847759065), CONST_BITS+PASS1_BITS); /* Odd part per figure 8 --- note paper omits factor of sqrt(2). * 8-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/16). * i0..i3 in the paper are tmp0..tmp3 here. */ tmp10 = tmp0 + tmp3; tmp11 = tmp1 + tmp2; tmp12 = tmp0 + tmp2; tmp13 = tmp1 + tmp3; z1 = MULTIPLY(tmp12 + tmp13, FIX_1_175875602); /* c3 */ /* Add fudge factor here for final descale. */ z1 += ONE << (CONST_BITS+PASS1_BITS-1); tmp0 = MULTIPLY(tmp0, FIX_1_501321110); /* c1+c3-c5-c7 */ tmp1 = MULTIPLY(tmp1, FIX_3_072711026); /* c1+c3+c5-c7 */ tmp2 = MULTIPLY(tmp2, FIX_2_053119869); /* c1+c3-c5+c7 */ tmp3 = MULTIPLY(tmp3, FIX_0_298631336); /* -c1+c3+c5-c7 */ tmp10 = MULTIPLY(tmp10, - FIX_0_899976223); /* c7-c3 */ tmp11 = MULTIPLY(tmp11, - FIX_2_562915447); /* -c1-c3 */ tmp12 = MULTIPLY(tmp12, - FIX_0_390180644); /* c5-c3 */ tmp13 = MULTIPLY(tmp13, - FIX_1_961570560); /* -c3-c5 */ tmp12 += z1; tmp13 += z1; dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0 + tmp10 + tmp12, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp1 + tmp11 + tmp13, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*5] = (DCTELEM) RIGHT_SHIFT(tmp2 + tmp11 + tmp12, CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*7] = (DCTELEM) RIGHT_SHIFT(tmp3 + tmp10 + tmp13, CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 3x6 sample block. * * 3-point FDCT in pass 1 (rows), 6-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_3x6 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1, tmp2; INT32 tmp10, tmp11, tmp12; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */ /* We scale the results further by 2 as part of output adaption */ /* scaling for different DCT size. */ /* 3-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/6). */ dataptr = data; for (ctr = 0; ctr < 6; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]) + GETJSAMPLE(elemptr[2]); tmp1 = GETJSAMPLE(elemptr[1]); tmp2 = GETJSAMPLE(elemptr[0]) - GETJSAMPLE(elemptr[2]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 3 * CENTERJSAMPLE) << (PASS1_BITS+1)); dataptr[2] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp1, FIX(0.707106781)), /* c2 */ CONST_BITS-PASS1_BITS-1); /* Odd part */ dataptr[1] = (DCTELEM) DESCALE(MULTIPLY(tmp2, FIX(1.224744871)), /* c1 */ CONST_BITS-PASS1_BITS-1); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We remove the PASS1_BITS scaling, but leave the results scaled up * by an overall factor of 8. * We must also scale the output by (8/6)*(8/3) = 32/9, which we partially * fold into the constant multipliers (other part was done in pass 1): * 6-point FDCT kernel, cK represents sqrt(2) * cos(K*pi/12) * 16/9. */ dataptr = data; for (ctr = 0; ctr < 3; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*5]; tmp11 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*3]; tmp10 = tmp0 + tmp2; tmp12 = tmp0 - tmp2; tmp0 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*5]; tmp1 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*4]; tmp2 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*3]; dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(MULTIPLY(tmp10 + tmp11, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(MULTIPLY(tmp12, FIX(2.177324216)), /* c2 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(MULTIPLY(tmp10 - tmp11 - tmp11, FIX(1.257078722)), /* c4 */ CONST_BITS+PASS1_BITS); /* Odd part */ tmp10 = MULTIPLY(tmp0 + tmp2, FIX(0.650711829)); /* c5 */ dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp0 + tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(MULTIPLY(tmp0 - tmp1 - tmp2, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 + MULTIPLY(tmp2 - tmp1, FIX(1.777777778)), /* 16/9 */ CONST_BITS+PASS1_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 2x4 sample block. * * 2-point FDCT in pass 1 (rows), 4-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_2x4 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1; INT32 tmp10, tmp11; DCTELEM *dataptr; JSAMPROW elemptr; int ctr; SHIFT_TEMPS /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); /* Pass 1: process rows. */ /* Note results are scaled up by sqrt(8) compared to a true DCT. */ /* We must also scale the output by (8/2)*(8/4) = 2**3, which we add here. */ dataptr = data; for (ctr = 0; ctr < 4; ctr++) { elemptr = sample_data[ctr] + start_col; /* Even part */ tmp0 = GETJSAMPLE(elemptr[0]); tmp1 = GETJSAMPLE(elemptr[1]); /* Apply unsigned->signed conversion */ dataptr[0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 3); /* Odd part */ dataptr[1] = (DCTELEM) ((tmp0 - tmp1) << 3); dataptr += DCTSIZE; /* advance pointer to next row */ } /* Pass 2: process columns. * We leave the results scaled up by an overall factor of 8. * 4-point FDCT kernel, * cK represents sqrt(2) * cos(K*pi/16) [refers to 8-point FDCT]. */ dataptr = data; for (ctr = 0; ctr < 2; ctr++) { /* Even part */ tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*3]; tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*2]; tmp10 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*3]; tmp11 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*2]; dataptr[DCTSIZE*0] = (DCTELEM) (tmp0 + tmp1); dataptr[DCTSIZE*2] = (DCTELEM) (tmp0 - tmp1); /* Odd part */ tmp0 = MULTIPLY(tmp10 + tmp11, FIX_0_541196100); /* c6 */ /* Add fudge factor here for final descale. */ tmp0 += ONE << (CONST_BITS-1); dataptr[DCTSIZE*1] = (DCTELEM) RIGHT_SHIFT(tmp0 + MULTIPLY(tmp10, FIX_0_765366865), /* c2-c6 */ CONST_BITS); dataptr[DCTSIZE*3] = (DCTELEM) RIGHT_SHIFT(tmp0 - MULTIPLY(tmp11, FIX_1_847759065), /* c2+c6 */ CONST_BITS); dataptr++; /* advance pointer to next column */ } } /* * Perform the forward DCT on a 1x2 sample block. * * 1-point FDCT in pass 1 (rows), 2-point in pass 2 (columns). */ GLOBAL(void) jpeg_fdct_1x2 (DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col) { INT32 tmp0, tmp1; /* Pre-zero output coefficient block. */ MEMZERO(data, SIZEOF(DCTELEM) * DCTSIZE2); tmp0 = GETJSAMPLE(sample_data[0][start_col]); tmp1 = GETJSAMPLE(sample_data[1][start_col]); /* We leave the results scaled up by an overall factor of 8. * We must also scale the output by (8/1)*(8/2) = 2**5. */ /* Even part */ /* Apply unsigned->signed conversion */ data[DCTSIZE*0] = (DCTELEM) ((tmp0 + tmp1 - 2 * CENTERJSAMPLE) << 5); /* Odd part */ data[DCTSIZE*1] = (DCTELEM) ((tmp0 - tmp1) << 5); } #endif /* DCT_SCALING_SUPPORTED */ #endif /* DCT_ISLOW_SUPPORTED */ jpeg-8d1/rdppm.c0000644000175000017500000003337611165174571012335 0ustar billbill/* * rdppm.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2009 by Bill Allombert, Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains routines to read input images in PPM/PGM format. * The extended 2-byte-per-sample raw PPM/PGM formats are supported. * The PBMPLUS library is NOT required to compile this software * (but it is highly useful as a set of PPM image manipulation programs). * * These routines may need modification for non-Unix environments or * specialized applications. As they stand, they assume input from * an ordinary stdio stream. They further assume that reading begins * at the start of the file; start_input may need work if the * user interface has already read some data (e.g., to determine that * the file is indeed PPM format). */ #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ #ifdef PPM_SUPPORTED /* Portions of this code are based on the PBMPLUS library, which is: ** ** Copyright (C) 1988 by Jef Poskanzer. ** ** Permission to use, copy, modify, and distribute this software and its ** documentation for any purpose and without fee is hereby granted, provided ** that the above copyright notice appear in all copies and that both that ** copyright notice and this permission notice appear in supporting ** documentation. This software is provided "as is" without express or ** implied warranty. */ /* Macros to deal with unsigned chars as efficiently as compiler allows */ #ifdef HAVE_UNSIGNED_CHAR typedef unsigned char U_CHAR; #define UCH(x) ((int) (x)) #else /* !HAVE_UNSIGNED_CHAR */ #ifdef CHAR_IS_UNSIGNED typedef char U_CHAR; #define UCH(x) ((int) (x)) #else typedef char U_CHAR; #define UCH(x) ((int) (x) & 0xFF) #endif #endif /* HAVE_UNSIGNED_CHAR */ #define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) /* * On most systems, reading individual bytes with getc() is drastically less * efficient than buffering a row at a time with fread(). On PCs, we must * allocate the buffer in near data space, because we are assuming small-data * memory model, wherein fread() can't reach far memory. If you need to * process very wide images on a PC, you might have to compile in large-memory * model, or else replace fread() with a getc() loop --- which will be much * slower. */ /* Private version of data source object */ typedef struct { struct cjpeg_source_struct pub; /* public fields */ U_CHAR *iobuffer; /* non-FAR pointer to I/O buffer */ JSAMPROW pixrow; /* FAR pointer to same */ size_t buffer_width; /* width of I/O buffer */ JSAMPLE *rescale; /* => maxval-remapping array, or NULL */ } ppm_source_struct; typedef ppm_source_struct * ppm_source_ptr; LOCAL(int) pbm_getc (FILE * infile) /* Read next char, skipping over any comments */ /* A comment/newline sequence is returned as a newline */ { register int ch; ch = getc(infile); if (ch == '#') { do { ch = getc(infile); } while (ch != '\n' && ch != EOF); } return ch; } LOCAL(unsigned int) read_pbm_integer (j_compress_ptr cinfo, FILE * infile) /* Read an unsigned decimal integer from the PPM file */ /* Swallows one trailing character after the integer */ /* Note that on a 16-bit-int machine, only values up to 64k can be read. */ /* This should not be a problem in practice. */ { register int ch; register unsigned int val; /* Skip any leading whitespace */ do { ch = pbm_getc(infile); if (ch == EOF) ERREXIT(cinfo, JERR_INPUT_EOF); } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'); if (ch < '0' || ch > '9') ERREXIT(cinfo, JERR_PPM_NONNUMERIC); val = ch - '0'; while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') { val *= 10; val += ch - '0'; } return val; } /* * Read one row of pixels. * * We provide several different versions depending on input file format. * In all cases, input is scaled to the size of JSAMPLE. * * A really fast path is provided for reading byte/sample raw files with * maxval = MAXJSAMPLE, which is the normal case for 8-bit data. */ METHODDEF(JDIMENSION) get_text_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading text-format PGM files with any maxval */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; FILE * infile = source->pub.input_file; register JSAMPROW ptr; register JSAMPLE *rescale = source->rescale; JDIMENSION col; ptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; } return 1; } METHODDEF(JDIMENSION) get_text_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading text-format PPM files with any maxval */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; FILE * infile = source->pub.input_file; register JSAMPROW ptr; register JSAMPLE *rescale = source->rescale; JDIMENSION col; ptr = source->pub.buffer[0]; for (col = cinfo->image_width; col > 0; col--) { *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; } return 1; } METHODDEF(JDIMENSION) get_scaled_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading raw-byte-format PGM files with any maxval */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; register JSAMPROW ptr; register U_CHAR * bufferptr; register JSAMPLE *rescale = source->rescale; JDIMENSION col; if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) ERREXIT(cinfo, JERR_INPUT_EOF); ptr = source->pub.buffer[0]; bufferptr = source->iobuffer; for (col = cinfo->image_width; col > 0; col--) { *ptr++ = rescale[UCH(*bufferptr++)]; } return 1; } METHODDEF(JDIMENSION) get_scaled_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading raw-byte-format PPM files with any maxval */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; register JSAMPROW ptr; register U_CHAR * bufferptr; register JSAMPLE *rescale = source->rescale; JDIMENSION col; if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) ERREXIT(cinfo, JERR_INPUT_EOF); ptr = source->pub.buffer[0]; bufferptr = source->iobuffer; for (col = cinfo->image_width; col > 0; col--) { *ptr++ = rescale[UCH(*bufferptr++)]; *ptr++ = rescale[UCH(*bufferptr++)]; *ptr++ = rescale[UCH(*bufferptr++)]; } return 1; } METHODDEF(JDIMENSION) get_raw_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading raw-byte-format files with maxval = MAXJSAMPLE. * In this case we just read right into the JSAMPLE buffer! * Note that same code works for PPM and PGM files. */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) ERREXIT(cinfo, JERR_INPUT_EOF); return 1; } METHODDEF(JDIMENSION) get_word_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading raw-word-format PGM files with any maxval */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; register JSAMPROW ptr; register U_CHAR * bufferptr; register JSAMPLE *rescale = source->rescale; JDIMENSION col; if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) ERREXIT(cinfo, JERR_INPUT_EOF); ptr = source->pub.buffer[0]; bufferptr = source->iobuffer; for (col = cinfo->image_width; col > 0; col--) { register int temp; temp = UCH(*bufferptr++) << 8; temp |= UCH(*bufferptr++); *ptr++ = rescale[temp]; } return 1; } METHODDEF(JDIMENSION) get_word_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) /* This version is for reading raw-word-format PPM files with any maxval */ { ppm_source_ptr source = (ppm_source_ptr) sinfo; register JSAMPROW ptr; register U_CHAR * bufferptr; register JSAMPLE *rescale = source->rescale; JDIMENSION col; if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) ERREXIT(cinfo, JERR_INPUT_EOF); ptr = source->pub.buffer[0]; bufferptr = source->iobuffer; for (col = cinfo->image_width; col > 0; col--) { register int temp; temp = UCH(*bufferptr++) << 8; temp |= UCH(*bufferptr++); *ptr++ = rescale[temp]; temp = UCH(*bufferptr++) << 8; temp |= UCH(*bufferptr++); *ptr++ = rescale[temp]; temp = UCH(*bufferptr++) << 8; temp |= UCH(*bufferptr++); *ptr++ = rescale[temp]; } return 1; } /* * Read the file header; return image size and component count. */ METHODDEF(void) start_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { ppm_source_ptr source = (ppm_source_ptr) sinfo; int c; unsigned int w, h, maxval; boolean need_iobuffer, use_raw_buffer, need_rescale; if (getc(source->pub.input_file) != 'P') ERREXIT(cinfo, JERR_PPM_NOT); c = getc(source->pub.input_file); /* subformat discriminator character */ /* detect unsupported variants (ie, PBM) before trying to read header */ switch (c) { case '2': /* it's a text-format PGM file */ case '3': /* it's a text-format PPM file */ case '5': /* it's a raw-format PGM file */ case '6': /* it's a raw-format PPM file */ break; default: ERREXIT(cinfo, JERR_PPM_NOT); break; } /* fetch the remaining header info */ w = read_pbm_integer(cinfo, source->pub.input_file); h = read_pbm_integer(cinfo, source->pub.input_file); maxval = read_pbm_integer(cinfo, source->pub.input_file); if (w <= 0 || h <= 0 || maxval <= 0) /* error check */ ERREXIT(cinfo, JERR_PPM_NOT); cinfo->data_precision = BITS_IN_JSAMPLE; /* we always rescale data to this */ cinfo->image_width = (JDIMENSION) w; cinfo->image_height = (JDIMENSION) h; /* initialize flags to most common settings */ need_iobuffer = TRUE; /* do we need an I/O buffer? */ use_raw_buffer = FALSE; /* do we map input buffer onto I/O buffer? */ need_rescale = TRUE; /* do we need a rescale array? */ switch (c) { case '2': /* it's a text-format PGM file */ cinfo->input_components = 1; cinfo->in_color_space = JCS_GRAYSCALE; TRACEMS2(cinfo, 1, JTRC_PGM_TEXT, w, h); source->pub.get_pixel_rows = get_text_gray_row; need_iobuffer = FALSE; break; case '3': /* it's a text-format PPM file */ cinfo->input_components = 3; cinfo->in_color_space = JCS_RGB; TRACEMS2(cinfo, 1, JTRC_PPM_TEXT, w, h); source->pub.get_pixel_rows = get_text_rgb_row; need_iobuffer = FALSE; break; case '5': /* it's a raw-format PGM file */ cinfo->input_components = 1; cinfo->in_color_space = JCS_GRAYSCALE; TRACEMS2(cinfo, 1, JTRC_PGM, w, h); if (maxval > 255) { source->pub.get_pixel_rows = get_word_gray_row; } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) { source->pub.get_pixel_rows = get_raw_row; use_raw_buffer = TRUE; need_rescale = FALSE; } else { source->pub.get_pixel_rows = get_scaled_gray_row; } break; case '6': /* it's a raw-format PPM file */ cinfo->input_components = 3; cinfo->in_color_space = JCS_RGB; TRACEMS2(cinfo, 1, JTRC_PPM, w, h); if (maxval > 255) { source->pub.get_pixel_rows = get_word_rgb_row; } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) { source->pub.get_pixel_rows = get_raw_row; use_raw_buffer = TRUE; need_rescale = FALSE; } else { source->pub.get_pixel_rows = get_scaled_rgb_row; } break; } /* Allocate space for I/O buffer: 1 or 3 bytes or words/pixel. */ if (need_iobuffer) { source->buffer_width = (size_t) w * cinfo->input_components * ((maxval<=255) ? SIZEOF(U_CHAR) : (2*SIZEOF(U_CHAR))); source->iobuffer = (U_CHAR *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, source->buffer_width); } /* Create compressor input buffer. */ if (use_raw_buffer) { /* For unscaled raw-input case, we can just map it onto the I/O buffer. */ /* Synthesize a JSAMPARRAY pointer structure */ /* Cast here implies near->far pointer conversion on PCs */ source->pixrow = (JSAMPROW) source->iobuffer; source->pub.buffer = & source->pixrow; source->pub.buffer_height = 1; } else { /* Need to translate anyway, so make a separate sample buffer. */ source->pub.buffer = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) w * cinfo->input_components, (JDIMENSION) 1); source->pub.buffer_height = 1; } /* Compute the rescaling array if required. */ if (need_rescale) { INT32 val, half_maxval; /* On 16-bit-int machines we have to be careful of maxval = 65535 */ source->rescale = (JSAMPLE *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (size_t) (((long) maxval + 1L) * SIZEOF(JSAMPLE))); half_maxval = maxval / 2; for (val = 0; val <= (INT32) maxval; val++) { /* The multiplication here must be done in 32 bits to avoid overflow */ source->rescale[val] = (JSAMPLE) ((val*MAXJSAMPLE + half_maxval)/maxval); } } } /* * Finish up at the end of the file. */ METHODDEF(void) finish_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) { /* no work */ } /* * The module selection routine for PPM format input. */ GLOBAL(cjpeg_source_ptr) jinit_read_ppm (j_compress_ptr cinfo) { ppm_source_ptr source; /* Create module interface object */ source = (ppm_source_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(ppm_source_struct)); /* Fill in method ptrs, except get_pixel_rows which start_input sets */ source->pub.start_input = start_input_ppm; source->pub.finish_input = finish_input_ppm; return (cjpeg_source_ptr) source; } #endif /* PPM_SUPPORTED */ jpeg-8d1/jmemdos.c0000644000175000017500000004504106371155132012634 0ustar billbill/* * jmemdos.c * * Copyright (C) 1992-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file provides an MS-DOS-compatible implementation of the system- * dependent portion of the JPEG memory manager. Temporary data can be * stored in extended or expanded memory as well as in regular DOS files. * * If you use this file, you must be sure that NEED_FAR_POINTERS is defined * if you compile in a small-data memory model; it should NOT be defined if * you use a large-data memory model. This file is not recommended if you * are using a flat-memory-space 386 environment such as DJGCC or Watcom C. * Also, this code will NOT work if struct fields are aligned on greater than * 2-byte boundaries. * * Based on code contributed by Ge' Weijers. */ /* * If you have both extended and expanded memory, you may want to change the * order in which they are tried in jopen_backing_store. On a 286 machine * expanded memory is usually faster, since extended memory access involves * an expensive protected-mode-and-back switch. On 386 and better, extended * memory is usually faster. As distributed, the code tries extended memory * first (what? not everyone has a 386? :-). * * You can disable use of extended/expanded memory entirely by altering these * definitions or overriding them from the Makefile (eg, -DEMS_SUPPORTED=0). */ #ifndef XMS_SUPPORTED #define XMS_SUPPORTED 1 #endif #ifndef EMS_SUPPORTED #define EMS_SUPPORTED 1 #endif #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #include "jmemsys.h" /* import the system-dependent declarations */ #ifndef HAVE_STDLIB_H /* should declare these */ extern void * malloc JPP((size_t size)); extern void free JPP((void *ptr)); extern char * getenv JPP((const char * name)); #endif #ifdef NEED_FAR_POINTERS #ifdef __TURBOC__ /* These definitions work for Borland C (Turbo C) */ #include /* need farmalloc(), farfree() */ #define far_malloc(x) farmalloc(x) #define far_free(x) farfree(x) #else /* These definitions work for Microsoft C and compatible compilers */ #include /* need _fmalloc(), _ffree() */ #define far_malloc(x) _fmalloc(x) #define far_free(x) _ffree(x) #endif #else /* not NEED_FAR_POINTERS */ #define far_malloc(x) malloc(x) #define far_free(x) free(x) #endif /* NEED_FAR_POINTERS */ #ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ #define READ_BINARY "r" #else #define READ_BINARY "rb" #endif #ifndef USE_MSDOS_MEMMGR /* make sure user got configuration right */ You forgot to define USE_MSDOS_MEMMGR in jconfig.h. /* deliberate syntax error */ #endif #if MAX_ALLOC_CHUNK >= 65535L /* make sure jconfig.h got this right */ MAX_ALLOC_CHUNK should be less than 64K. /* deliberate syntax error */ #endif /* * Declarations for assembly-language support routines (see jmemdosa.asm). * * The functions are declared "far" as are all their pointer arguments; * this ensures the assembly source code will work regardless of the * compiler memory model. We assume "short" is 16 bits, "long" is 32. */ typedef void far * XMSDRIVER; /* actually a pointer to code */ typedef struct { /* registers for calling XMS driver */ unsigned short ax, dx, bx; void far * ds_si; } XMScontext; typedef struct { /* registers for calling EMS driver */ unsigned short ax, dx, bx; void far * ds_si; } EMScontext; extern short far jdos_open JPP((short far * handle, char far * filename)); extern short far jdos_close JPP((short handle)); extern short far jdos_seek JPP((short handle, long offset)); extern short far jdos_read JPP((short handle, void far * buffer, unsigned short count)); extern short far jdos_write JPP((short handle, void far * buffer, unsigned short count)); extern void far jxms_getdriver JPP((XMSDRIVER far *)); extern void far jxms_calldriver JPP((XMSDRIVER, XMScontext far *)); extern short far jems_available JPP((void)); extern void far jems_calldriver JPP((EMScontext far *)); /* * Selection of a file name for a temporary file. * This is highly system-dependent, and you may want to customize it. */ static int next_file_num; /* to distinguish among several temp files */ LOCAL(void) select_file_name (char * fname) { const char * env; char * ptr; FILE * tfile; /* Keep generating file names till we find one that's not in use */ for (;;) { /* Get temp directory name from environment TMP or TEMP variable; * if none, use "." */ if ((env = (const char *) getenv("TMP")) == NULL) if ((env = (const char *) getenv("TEMP")) == NULL) env = "."; if (*env == '\0') /* null string means "." */ env = "."; ptr = fname; /* copy name to fname */ while (*env != '\0') *ptr++ = *env++; if (ptr[-1] != '\\' && ptr[-1] != '/') *ptr++ = '\\'; /* append backslash if not in env variable */ /* Append a suitable file name */ next_file_num++; /* advance counter */ sprintf(ptr, "JPG%03d.TMP", next_file_num); /* Probe to see if file name is already in use */ if ((tfile = fopen(fname, READ_BINARY)) == NULL) break; fclose(tfile); /* oops, it's there; close tfile & try again */ } } /* * Near-memory allocation and freeing are controlled by the regular library * routines malloc() and free(). */ GLOBAL(void *) jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) { return (void *) malloc(sizeofobject); } GLOBAL(void) jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) { free(object); } /* * "Large" objects are allocated in far memory, if possible */ GLOBAL(void FAR *) jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) { return (void FAR *) far_malloc(sizeofobject); } GLOBAL(void) jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) { far_free(object); } /* * This routine computes the total memory space available for allocation. * It's impossible to do this in a portable way; our current solution is * to make the user tell us (with a default value set at compile time). * If you can actually get the available space, it's a good idea to subtract * a slop factor of 5% or so. */ #ifndef DEFAULT_MAX_MEM /* so can override from makefile */ #define DEFAULT_MAX_MEM 300000L /* for total usage about 450K */ #endif GLOBAL(long) jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, long max_bytes_needed, long already_allocated) { return cinfo->mem->max_memory_to_use - already_allocated; } /* * Backing store (temporary file) management. * Backing store objects are only used when the value returned by * jpeg_mem_available is less than the total space needed. You can dispense * with these routines if you have plenty of virtual memory; see jmemnobs.c. */ /* * For MS-DOS we support three types of backing storage: * 1. Conventional DOS files. We access these by direct DOS calls rather * than via the stdio package. This provides a bit better performance, * but the real reason is that the buffers to be read or written are FAR. * The stdio library for small-data memory models can't cope with that. * 2. Extended memory, accessed per the XMS V2.0 specification. * 3. Expanded memory, accessed per the LIM/EMS 4.0 specification. * You'll need copies of those specs to make sense of the related code. * The specs are available by Internet FTP from the SIMTEL archives * (oak.oakland.edu and its various mirror sites). See files * pub/msdos/microsoft/xms20.arc and pub/msdos/info/limems41.zip. */ /* * Access methods for a DOS file. */ METHODDEF(void) read_file_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { if (jdos_seek(info->handle.file_handle, file_offset)) ERREXIT(cinfo, JERR_TFILE_SEEK); /* Since MAX_ALLOC_CHUNK is less than 64K, byte_count will be too. */ if (byte_count > 65535L) /* safety check */ ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK); if (jdos_read(info->handle.file_handle, buffer_address, (unsigned short) byte_count)) ERREXIT(cinfo, JERR_TFILE_READ); } METHODDEF(void) write_file_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { if (jdos_seek(info->handle.file_handle, file_offset)) ERREXIT(cinfo, JERR_TFILE_SEEK); /* Since MAX_ALLOC_CHUNK is less than 64K, byte_count will be too. */ if (byte_count > 65535L) /* safety check */ ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK); if (jdos_write(info->handle.file_handle, buffer_address, (unsigned short) byte_count)) ERREXIT(cinfo, JERR_TFILE_WRITE); } METHODDEF(void) close_file_store (j_common_ptr cinfo, backing_store_ptr info) { jdos_close(info->handle.file_handle); /* close the file */ remove(info->temp_name); /* delete the file */ /* If your system doesn't have remove(), try unlink() instead. * remove() is the ANSI-standard name for this function, but * unlink() was more common in pre-ANSI systems. */ TRACEMSS(cinfo, 1, JTRC_TFILE_CLOSE, info->temp_name); } LOCAL(boolean) open_file_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { short handle; select_file_name(info->temp_name); if (jdos_open((short far *) & handle, (char far *) info->temp_name)) { /* might as well exit since jpeg_open_backing_store will fail anyway */ ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); return FALSE; } info->handle.file_handle = handle; info->read_backing_store = read_file_store; info->write_backing_store = write_file_store; info->close_backing_store = close_file_store; TRACEMSS(cinfo, 1, JTRC_TFILE_OPEN, info->temp_name); return TRUE; /* succeeded */ } /* * Access methods for extended memory. */ #if XMS_SUPPORTED static XMSDRIVER xms_driver; /* saved address of XMS driver */ typedef union { /* either long offset or real-mode pointer */ long offset; void far * ptr; } XMSPTR; typedef struct { /* XMS move specification structure */ long length; XMSH src_handle; XMSPTR src; XMSH dst_handle; XMSPTR dst; } XMSspec; #define ODD(X) (((X) & 1L) != 0) METHODDEF(void) read_xms_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { XMScontext ctx; XMSspec spec; char endbuffer[2]; /* The XMS driver can't cope with an odd length, so handle the last byte * specially if byte_count is odd. We don't expect this to be common. */ spec.length = byte_count & (~ 1L); spec.src_handle = info->handle.xms_handle; spec.src.offset = file_offset; spec.dst_handle = 0; spec.dst.ptr = buffer_address; ctx.ds_si = (void far *) & spec; ctx.ax = 0x0b00; /* EMB move */ jxms_calldriver(xms_driver, (XMScontext far *) & ctx); if (ctx.ax != 1) ERREXIT(cinfo, JERR_XMS_READ); if (ODD(byte_count)) { read_xms_store(cinfo, info, (void FAR *) endbuffer, file_offset + byte_count - 1L, 2L); ((char FAR *) buffer_address)[byte_count - 1L] = endbuffer[0]; } } METHODDEF(void) write_xms_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { XMScontext ctx; XMSspec spec; char endbuffer[2]; /* The XMS driver can't cope with an odd length, so handle the last byte * specially if byte_count is odd. We don't expect this to be common. */ spec.length = byte_count & (~ 1L); spec.src_handle = 0; spec.src.ptr = buffer_address; spec.dst_handle = info->handle.xms_handle; spec.dst.offset = file_offset; ctx.ds_si = (void far *) & spec; ctx.ax = 0x0b00; /* EMB move */ jxms_calldriver(xms_driver, (XMScontext far *) & ctx); if (ctx.ax != 1) ERREXIT(cinfo, JERR_XMS_WRITE); if (ODD(byte_count)) { read_xms_store(cinfo, info, (void FAR *) endbuffer, file_offset + byte_count - 1L, 2L); endbuffer[0] = ((char FAR *) buffer_address)[byte_count - 1L]; write_xms_store(cinfo, info, (void FAR *) endbuffer, file_offset + byte_count - 1L, 2L); } } METHODDEF(void) close_xms_store (j_common_ptr cinfo, backing_store_ptr info) { XMScontext ctx; ctx.dx = info->handle.xms_handle; ctx.ax = 0x0a00; jxms_calldriver(xms_driver, (XMScontext far *) & ctx); TRACEMS1(cinfo, 1, JTRC_XMS_CLOSE, info->handle.xms_handle); /* we ignore any error return from the driver */ } LOCAL(boolean) open_xms_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { XMScontext ctx; /* Get address of XMS driver */ jxms_getdriver((XMSDRIVER far *) & xms_driver); if (xms_driver == NULL) return FALSE; /* no driver to be had */ /* Get version number, must be >= 2.00 */ ctx.ax = 0x0000; jxms_calldriver(xms_driver, (XMScontext far *) & ctx); if (ctx.ax < (unsigned short) 0x0200) return FALSE; /* Try to get space (expressed in kilobytes) */ ctx.dx = (unsigned short) ((total_bytes_needed + 1023L) >> 10); ctx.ax = 0x0900; jxms_calldriver(xms_driver, (XMScontext far *) & ctx); if (ctx.ax != 1) return FALSE; /* Succeeded, save the handle and away we go */ info->handle.xms_handle = ctx.dx; info->read_backing_store = read_xms_store; info->write_backing_store = write_xms_store; info->close_backing_store = close_xms_store; TRACEMS1(cinfo, 1, JTRC_XMS_OPEN, ctx.dx); return TRUE; /* succeeded */ } #endif /* XMS_SUPPORTED */ /* * Access methods for expanded memory. */ #if EMS_SUPPORTED /* The EMS move specification structure requires word and long fields aligned * at odd byte boundaries. Some compilers will align struct fields at even * byte boundaries. While it's usually possible to force byte alignment, * that causes an overall performance penalty and may pose problems in merging * JPEG into a larger application. Instead we accept some rather dirty code * here. Note this code would fail if the hardware did not allow odd-byte * word & long accesses, but all 80x86 CPUs do. */ typedef void far * EMSPTR; typedef union { /* EMS move specification structure */ long length; /* It's easy to access first 4 bytes */ char bytes[18]; /* Misaligned fields in here! */ } EMSspec; /* Macros for accessing misaligned fields */ #define FIELD_AT(spec,offset,type) (*((type *) &(spec.bytes[offset]))) #define SRC_TYPE(spec) FIELD_AT(spec,4,char) #define SRC_HANDLE(spec) FIELD_AT(spec,5,EMSH) #define SRC_OFFSET(spec) FIELD_AT(spec,7,unsigned short) #define SRC_PAGE(spec) FIELD_AT(spec,9,unsigned short) #define SRC_PTR(spec) FIELD_AT(spec,7,EMSPTR) #define DST_TYPE(spec) FIELD_AT(spec,11,char) #define DST_HANDLE(spec) FIELD_AT(spec,12,EMSH) #define DST_OFFSET(spec) FIELD_AT(spec,14,unsigned short) #define DST_PAGE(spec) FIELD_AT(spec,16,unsigned short) #define DST_PTR(spec) FIELD_AT(spec,14,EMSPTR) #define EMSPAGESIZE 16384L /* gospel, see the EMS specs */ #define HIBYTE(W) (((W) >> 8) & 0xFF) #define LOBYTE(W) ((W) & 0xFF) METHODDEF(void) read_ems_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { EMScontext ctx; EMSspec spec; spec.length = byte_count; SRC_TYPE(spec) = 1; SRC_HANDLE(spec) = info->handle.ems_handle; SRC_PAGE(spec) = (unsigned short) (file_offset / EMSPAGESIZE); SRC_OFFSET(spec) = (unsigned short) (file_offset % EMSPAGESIZE); DST_TYPE(spec) = 0; DST_HANDLE(spec) = 0; DST_PTR(spec) = buffer_address; ctx.ds_si = (void far *) & spec; ctx.ax = 0x5700; /* move memory region */ jems_calldriver((EMScontext far *) & ctx); if (HIBYTE(ctx.ax) != 0) ERREXIT(cinfo, JERR_EMS_READ); } METHODDEF(void) write_ems_store (j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count) { EMScontext ctx; EMSspec spec; spec.length = byte_count; SRC_TYPE(spec) = 0; SRC_HANDLE(spec) = 0; SRC_PTR(spec) = buffer_address; DST_TYPE(spec) = 1; DST_HANDLE(spec) = info->handle.ems_handle; DST_PAGE(spec) = (unsigned short) (file_offset / EMSPAGESIZE); DST_OFFSET(spec) = (unsigned short) (file_offset % EMSPAGESIZE); ctx.ds_si = (void far *) & spec; ctx.ax = 0x5700; /* move memory region */ jems_calldriver((EMScontext far *) & ctx); if (HIBYTE(ctx.ax) != 0) ERREXIT(cinfo, JERR_EMS_WRITE); } METHODDEF(void) close_ems_store (j_common_ptr cinfo, backing_store_ptr info) { EMScontext ctx; ctx.ax = 0x4500; ctx.dx = info->handle.ems_handle; jems_calldriver((EMScontext far *) & ctx); TRACEMS1(cinfo, 1, JTRC_EMS_CLOSE, info->handle.ems_handle); /* we ignore any error return from the driver */ } LOCAL(boolean) open_ems_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { EMScontext ctx; /* Is EMS driver there? */ if (! jems_available()) return FALSE; /* Get status, make sure EMS is OK */ ctx.ax = 0x4000; jems_calldriver((EMScontext far *) & ctx); if (HIBYTE(ctx.ax) != 0) return FALSE; /* Get version, must be >= 4.0 */ ctx.ax = 0x4600; jems_calldriver((EMScontext far *) & ctx); if (HIBYTE(ctx.ax) != 0 || LOBYTE(ctx.ax) < 0x40) return FALSE; /* Try to allocate requested space */ ctx.ax = 0x4300; ctx.bx = (unsigned short) ((total_bytes_needed + EMSPAGESIZE-1L) / EMSPAGESIZE); jems_calldriver((EMScontext far *) & ctx); if (HIBYTE(ctx.ax) != 0) return FALSE; /* Succeeded, save the handle and away we go */ info->handle.ems_handle = ctx.dx; info->read_backing_store = read_ems_store; info->write_backing_store = write_ems_store; info->close_backing_store = close_ems_store; TRACEMS1(cinfo, 1, JTRC_EMS_OPEN, ctx.dx); return TRUE; /* succeeded */ } #endif /* EMS_SUPPORTED */ /* * Initial opening of a backing-store object. */ GLOBAL(void) jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed) { /* Try extended memory, then expanded memory, then regular file. */ #if XMS_SUPPORTED if (open_xms_store(cinfo, info, total_bytes_needed)) return; #endif #if EMS_SUPPORTED if (open_ems_store(cinfo, info, total_bytes_needed)) return; #endif if (open_file_store(cinfo, info, total_bytes_needed)) return; ERREXITS(cinfo, JERR_TFILE_CREATE, ""); } /* * These routines take care of any system-dependent initialization and * cleanup required. */ GLOBAL(long) jpeg_mem_init (j_common_ptr cinfo) { next_file_num = 0; /* initialize temp file name generator */ return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ } GLOBAL(void) jpeg_mem_term (j_common_ptr cinfo) { /* Microsoft C, at least in v6.00A, will not successfully reclaim freed * blocks of size > 32Kbytes unless we give it a kick in the rear, like so: */ #ifdef NEED_FHEAPMIN _fheapmin(); #endif } jpeg-8d1/config.guess0000755000175000017500000012704511674632475013373 0ustar billbill#! /bin/sh # Attempt to guess a canonical system name. # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, # 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, # 2011 Free Software Foundation, Inc. timestamp='2011-11-11' # This file is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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Otherwise, it exits with 1. # # You can get the latest version of this script from: # http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD me=`echo "$0" | sed -e 's,.*/,,'` usage="\ Usage: $0 [OPTION] Output the configuration name of the system \`$me' is run on. Operation modes: -h, --help print this help, then exit -t, --time-stamp print date of last modification, then exit -v, --version print version number, then exit Report bugs and patches to ." version="\ GNU config.guess ($timestamp) Originally written by Per Bothner. Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." help=" Try \`$me --help' for more information." # Parse command line while test $# -gt 0 ; do case $1 in --time-stamp | --time* | -t ) echo "$timestamp" ; exit ;; --version | -v ) echo "$version" ; exit ;; --help | --h* | -h ) echo "$usage"; exit ;; -- ) # Stop option processing shift; break ;; - ) # Use stdin as input. break ;; -* ) echo "$me: invalid option $1$help" >&2 exit 1 ;; * ) break ;; esac done if test $# != 0; then echo "$me: too many arguments$help" >&2 exit 1 fi trap 'exit 1' 1 2 15 # CC_FOR_BUILD -- compiler used by this script. Note that the use of a # compiler to aid in system detection is discouraged as it requires # temporary files to be created and, as you can see below, it is a # headache to deal with in a portable fashion. # Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. 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The system name ranges from "MiNT" over "FreeMiNT" # to the lowercase version "mint" (or "freemint"). Finally # the system name "TOS" denotes a system which is actually not # MiNT. But MiNT is downward compatible to TOS, so this should # be no problem. atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) echo m68k-milan-mint${UNAME_RELEASE} exit ;; hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) echo m68k-hades-mint${UNAME_RELEASE} exit ;; *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) echo m68k-unknown-mint${UNAME_RELEASE} exit ;; m68k:machten:*:*) echo m68k-apple-machten${UNAME_RELEASE} exit ;; powerpc:machten:*:*) echo powerpc-apple-machten${UNAME_RELEASE} exit ;; RISC*:Mach:*:*) echo mips-dec-mach_bsd4.3 exit ;; RISC*:ULTRIX:*:*) echo mips-dec-ultrix${UNAME_RELEASE} exit ;; VAX*:ULTRIX*:*:*) echo vax-dec-ultrix${UNAME_RELEASE} exit ;; 2020:CLIX:*:* | 2430:CLIX:*:*) echo clipper-intergraph-clix${UNAME_RELEASE} exit ;; mips:*:*:UMIPS | mips:*:*:RISCos) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #ifdef __cplusplus #include /* for printf() prototype */ int main (int argc, char *argv[]) { #else int main (argc, argv) int argc; char *argv[]; { #endif #if defined (host_mips) && defined (MIPSEB) #if defined (SYSTYPE_SYSV) printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_SVR4) printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); #endif #endif exit (-1); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && SYSTEM_NAME=`$dummy $dummyarg` && { echo "$SYSTEM_NAME"; exit; } echo mips-mips-riscos${UNAME_RELEASE} exit ;; Motorola:PowerMAX_OS:*:*) echo powerpc-motorola-powermax exit ;; Motorola:*:4.3:PL8-*) echo powerpc-harris-powermax exit ;; Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) echo powerpc-harris-powermax exit ;; Night_Hawk:Power_UNIX:*:*) echo powerpc-harris-powerunix exit ;; m88k:CX/UX:7*:*) echo m88k-harris-cxux7 exit ;; m88k:*:4*:R4*) echo m88k-motorola-sysv4 exit ;; m88k:*:3*:R3*) echo m88k-motorola-sysv3 exit ;; AViiON:dgux:*:*) # DG/UX returns AViiON for all architectures UNAME_PROCESSOR=`/usr/bin/uname -p` if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] then if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ [ ${TARGET_BINARY_INTERFACE}x = x ] then echo m88k-dg-dgux${UNAME_RELEASE} else echo m88k-dg-dguxbcs${UNAME_RELEASE} fi else echo i586-dg-dgux${UNAME_RELEASE} fi exit ;; M88*:DolphinOS:*:*) # DolphinOS (SVR3) echo m88k-dolphin-sysv3 exit ;; M88*:*:R3*:*) # Delta 88k system running SVR3 echo m88k-motorola-sysv3 exit ;; XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) echo m88k-tektronix-sysv3 exit ;; Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) echo m68k-tektronix-bsd exit ;; *:IRIX*:*:*) echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` exit ;; ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' i*86:AIX:*:*) echo i386-ibm-aix exit ;; ia64:AIX:*:*) if [ -x /usr/bin/oslevel ] ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} exit ;; *:AIX:2:3) if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include main() { if (!__power_pc()) exit(1); puts("powerpc-ibm-aix3.2.5"); exit(0); } EOF if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` then echo "$SYSTEM_NAME" else echo rs6000-ibm-aix3.2.5 fi elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then echo rs6000-ibm-aix3.2.4 else echo rs6000-ibm-aix3.2 fi exit ;; *:AIX:*:[4567]) IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then IBM_ARCH=rs6000 else IBM_ARCH=powerpc fi if [ -x /usr/bin/oslevel ] ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${IBM_ARCH}-ibm-aix${IBM_REV} exit ;; *:AIX:*:*) echo rs6000-ibm-aix exit ;; ibmrt:4.4BSD:*|romp-ibm:BSD:*) echo romp-ibm-bsd4.4 exit ;; ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to exit ;; # report: romp-ibm BSD 4.3 *:BOSX:*:*) echo rs6000-bull-bosx exit ;; DPX/2?00:B.O.S.:*:*) echo m68k-bull-sysv3 exit ;; 9000/[34]??:4.3bsd:1.*:*) echo m68k-hp-bsd exit ;; hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) echo m68k-hp-bsd4.4 exit ;; 9000/[34678]??:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` case "${UNAME_MACHINE}" in 9000/31? ) HP_ARCH=m68000 ;; 9000/[34]?? ) HP_ARCH=m68k ;; 9000/[678][0-9][0-9]) if [ -x /usr/bin/getconf ]; then sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` case "${sc_cpu_version}" in 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1 532) # CPU_PA_RISC2_0 case "${sc_kernel_bits}" in 32) HP_ARCH="hppa2.0n" ;; 64) HP_ARCH="hppa2.0w" ;; '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20 esac ;; esac fi if [ "${HP_ARCH}" = "" ]; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #define _HPUX_SOURCE #include #include int main () { #if defined(_SC_KERNEL_BITS) long bits = sysconf(_SC_KERNEL_BITS); #endif long cpu = sysconf (_SC_CPU_VERSION); switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0"); break; case CPU_PA_RISC1_1: puts ("hppa1.1"); break; case CPU_PA_RISC2_0: #if defined(_SC_KERNEL_BITS) switch (bits) { case 64: puts ("hppa2.0w"); break; case 32: puts ("hppa2.0n"); break; default: puts ("hppa2.0"); break; } break; #else /* !defined(_SC_KERNEL_BITS) */ puts ("hppa2.0"); break; #endif default: puts ("hppa1.0"); break; } exit (0); } EOF (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` test -z "$HP_ARCH" && HP_ARCH=hppa fi ;; esac if [ ${HP_ARCH} = "hppa2.0w" ] then eval $set_cc_for_build # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler # generating 64-bit code. GNU and HP use different nomenclature: # # $ CC_FOR_BUILD=cc ./config.guess # => hppa2.0w-hp-hpux11.23 # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess # => hppa64-hp-hpux11.23 if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | grep -q __LP64__ then HP_ARCH="hppa2.0w" else HP_ARCH="hppa64" fi fi echo ${HP_ARCH}-hp-hpux${HPUX_REV} exit ;; ia64:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` echo ia64-hp-hpux${HPUX_REV} exit ;; 3050*:HI-UX:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include int main () { long cpu = sysconf (_SC_CPU_VERSION); /* The order matters, because CPU_IS_HP_MC68K erroneously returns true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct results, however. */ if (CPU_IS_PA_RISC (cpu)) { switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; default: puts ("hppa-hitachi-hiuxwe2"); break; } } else if (CPU_IS_HP_MC68K (cpu)) puts ("m68k-hitachi-hiuxwe2"); else puts ("unknown-hitachi-hiuxwe2"); exit (0); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && { echo "$SYSTEM_NAME"; exit; } echo unknown-hitachi-hiuxwe2 exit ;; 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) echo hppa1.1-hp-bsd exit ;; 9000/8??:4.3bsd:*:*) echo hppa1.0-hp-bsd exit ;; *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) echo hppa1.0-hp-mpeix exit ;; hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) echo hppa1.1-hp-osf exit ;; hp8??:OSF1:*:*) echo hppa1.0-hp-osf exit ;; i*86:OSF1:*:*) if [ -x /usr/sbin/sysversion ] ; then echo ${UNAME_MACHINE}-unknown-osf1mk else echo ${UNAME_MACHINE}-unknown-osf1 fi exit ;; parisc*:Lites*:*:*) echo hppa1.1-hp-lites exit ;; C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) echo c1-convex-bsd exit ;; C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) echo c34-convex-bsd exit ;; C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) echo c38-convex-bsd exit ;; C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) echo c4-convex-bsd exit ;; CRAY*Y-MP:*:*:*) echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*[A-Z]90:*:*:*) echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ -e 's/\.[^.]*$/.X/' exit ;; CRAY*TS:*:*:*) echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*T3E:*:*:*) echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*SV1:*:*:*) echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; *:UNICOS/mp:*:*) echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; 5000:UNIX_System_V:4.*:*) FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} exit ;; sparc*:BSD/OS:*:*) echo sparc-unknown-bsdi${UNAME_RELEASE} exit ;; *:BSD/OS:*:*) echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} exit ;; *:FreeBSD:*:*) UNAME_PROCESSOR=`/usr/bin/uname -p` case ${UNAME_PROCESSOR} in amd64) echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; *) echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; esac exit ;; i*:CYGWIN*:*) echo ${UNAME_MACHINE}-pc-cygwin exit ;; *:MINGW*:*) echo ${UNAME_MACHINE}-pc-mingw32 exit ;; i*:MSYS*:*) echo ${UNAME_MACHINE}-pc-msys exit ;; i*:windows32*:*) # uname -m includes "-pc" on this system. echo ${UNAME_MACHINE}-mingw32 exit ;; i*:PW*:*) echo ${UNAME_MACHINE}-pc-pw32 exit ;; *:Interix*:*) case ${UNAME_MACHINE} in x86) echo i586-pc-interix${UNAME_RELEASE} exit ;; authenticamd | genuineintel | EM64T) echo x86_64-unknown-interix${UNAME_RELEASE} exit ;; IA64) echo ia64-unknown-interix${UNAME_RELEASE} exit ;; esac ;; [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) echo i${UNAME_MACHINE}-pc-mks exit ;; 8664:Windows_NT:*) echo x86_64-pc-mks exit ;; i*:Windows_NT*:* | Pentium*:Windows_NT*:*) # How do we know it's Interix rather than the generic POSIX subsystem? # It also conflicts with pre-2.0 versions of AT&T UWIN. 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EV67) UNAME_MACHINE=alphaev67 ;; EV68*) UNAME_MACHINE=alphaev68 ;; esac objdump --private-headers /bin/sh | grep -q ld.so.1 if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} exit ;; arm*:Linux:*:*) eval $set_cc_for_build if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_EABI__ then echo ${UNAME_MACHINE}-unknown-linux-gnu else if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then echo ${UNAME_MACHINE}-unknown-linux-gnueabi else echo ${UNAME_MACHINE}-unknown-linux-gnueabihf fi fi exit ;; avr32*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; cris:Linux:*:*) echo cris-axis-linux-gnu exit ;; crisv32:Linux:*:*) echo crisv32-axis-linux-gnu exit ;; frv:Linux:*:*) echo frv-unknown-linux-gnu exit ;; hexagon:Linux:*:*) echo hexagon-unknown-linux-gnu exit ;; i*86:Linux:*:*) LIBC=gnu eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #ifdef __dietlibc__ LIBC=dietlibc #endif EOF eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'` echo "${UNAME_MACHINE}-pc-linux-${LIBC}" exit ;; ia64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; m32r*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; m68*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; mips:Linux:*:* | mips64:Linux:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #undef CPU #undef ${UNAME_MACHINE} #undef ${UNAME_MACHINE}el #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) CPU=${UNAME_MACHINE}el #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) CPU=${UNAME_MACHINE} #else CPU= #endif #endif EOF eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'` test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } ;; or32:Linux:*:*) echo or32-unknown-linux-gnu exit ;; padre:Linux:*:*) echo sparc-unknown-linux-gnu exit ;; parisc64:Linux:*:* | hppa64:Linux:*:*) echo hppa64-unknown-linux-gnu exit ;; parisc:Linux:*:* | hppa:Linux:*:*) # Look for CPU level case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in PA7*) echo hppa1.1-unknown-linux-gnu ;; PA8*) echo hppa2.0-unknown-linux-gnu ;; *) echo hppa-unknown-linux-gnu ;; esac exit ;; ppc64:Linux:*:*) echo powerpc64-unknown-linux-gnu exit ;; ppc:Linux:*:*) echo powerpc-unknown-linux-gnu exit ;; s390:Linux:*:* | s390x:Linux:*:*) echo ${UNAME_MACHINE}-ibm-linux exit ;; sh64*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; sh*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; sparc:Linux:*:* | sparc64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; tile*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; vax:Linux:*:*) echo ${UNAME_MACHINE}-dec-linux-gnu exit ;; x86_64:Linux:*:*) echo x86_64-unknown-linux-gnu exit ;; xtensa*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; i*86:DYNIX/ptx:4*:*) # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. # earlier versions are messed up and put the nodename in both # sysname and nodename. echo i386-sequent-sysv4 exit ;; i*86:UNIX_SV:4.2MP:2.*) # Unixware is an offshoot of SVR4, but it has its own version # number series starting with 2... # I am not positive that other SVR4 systems won't match this, # I just have to hope. -- rms. # Use sysv4.2uw... so that sysv4* matches it. echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} exit ;; i*86:OS/2:*:*) # If we were able to find `uname', then EMX Unix compatibility # is probably installed. echo ${UNAME_MACHINE}-pc-os2-emx exit ;; i*86:XTS-300:*:STOP) echo ${UNAME_MACHINE}-unknown-stop exit ;; i*86:atheos:*:*) echo ${UNAME_MACHINE}-unknown-atheos exit ;; i*86:syllable:*:*) echo ${UNAME_MACHINE}-pc-syllable exit ;; i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) echo i386-unknown-lynxos${UNAME_RELEASE} exit ;; i*86:*DOS:*:*) echo ${UNAME_MACHINE}-pc-msdosdjgpp exit ;; i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} else echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} fi exit ;; i*86:*:5:[678]*) # UnixWare 7.x, OpenUNIX and OpenServer 6. case `/bin/uname -X | grep "^Machine"` in *486*) UNAME_MACHINE=i486 ;; *Pentium) UNAME_MACHINE=i586 ;; *Pent*|*Celeron) UNAME_MACHINE=i686 ;; esac echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} exit ;; i*86:*:3.2:*) if test -f /usr/options/cb.name; then UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ && UNAME_MACHINE=i586 (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ && UNAME_MACHINE=i686 (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ && UNAME_MACHINE=i686 echo ${UNAME_MACHINE}-pc-sco$UNAME_REL else echo ${UNAME_MACHINE}-pc-sysv32 fi exit ;; pc:*:*:*) # Left here for compatibility: # uname -m prints for DJGPP always 'pc', but it prints nothing about # the processor, so we play safe by assuming i586. # Note: whatever this is, it MUST be the same as what config.sub # prints for the "djgpp" host, or else GDB configury will decide that # this is a cross-build. echo i586-pc-msdosdjgpp exit ;; Intel:Mach:3*:*) echo i386-pc-mach3 exit ;; paragon:*:*:*) echo i860-intel-osf1 exit ;; i860:*:4.*:*) # i860-SVR4 if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 else # Add other i860-SVR4 vendors below as they are discovered. echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 fi exit ;; mini*:CTIX:SYS*5:*) # "miniframe" echo m68010-convergent-sysv exit ;; mc68k:UNIX:SYSTEM5:3.51m) echo m68k-convergent-sysv exit ;; M680?0:D-NIX:5.3:*) echo m68k-diab-dnix exit ;; M68*:*:R3V[5678]*:*) test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) OS_REL='' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4; exit; } ;; NCR*:*:4.2:* | MPRAS*:*:4.2:*) OS_REL='.3' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) echo m68k-unknown-lynxos${UNAME_RELEASE} exit ;; mc68030:UNIX_System_V:4.*:*) echo m68k-atari-sysv4 exit ;; TSUNAMI:LynxOS:2.*:*) echo sparc-unknown-lynxos${UNAME_RELEASE} exit ;; rs6000:LynxOS:2.*:*) echo rs6000-unknown-lynxos${UNAME_RELEASE} exit ;; PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) echo powerpc-unknown-lynxos${UNAME_RELEASE} exit ;; SM[BE]S:UNIX_SV:*:*) echo mips-dde-sysv${UNAME_RELEASE} exit ;; RM*:ReliantUNIX-*:*:*) echo mips-sni-sysv4 exit ;; RM*:SINIX-*:*:*) echo mips-sni-sysv4 exit ;; *:SINIX-*:*:*) if uname -p 2>/dev/null >/dev/null ; then UNAME_MACHINE=`(uname -p) 2>/dev/null` echo ${UNAME_MACHINE}-sni-sysv4 else echo ns32k-sni-sysv fi exit ;; PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort # says echo i586-unisys-sysv4 exit ;; *:UNIX_System_V:4*:FTX*) # From Gerald Hewes . # How about differentiating between stratus architectures? -djm echo hppa1.1-stratus-sysv4 exit ;; *:*:*:FTX*) # From seanf@swdc.stratus.com. echo i860-stratus-sysv4 exit ;; i*86:VOS:*:*) # From Paul.Green@stratus.com. echo ${UNAME_MACHINE}-stratus-vos exit ;; *:VOS:*:*) # From Paul.Green@stratus.com. echo hppa1.1-stratus-vos exit ;; mc68*:A/UX:*:*) echo m68k-apple-aux${UNAME_RELEASE} exit ;; news*:NEWS-OS:6*:*) echo mips-sony-newsos6 exit ;; R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) if [ -d /usr/nec ]; then echo mips-nec-sysv${UNAME_RELEASE} else echo mips-unknown-sysv${UNAME_RELEASE} fi exit ;; BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. echo powerpc-be-beos exit ;; BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. echo powerpc-apple-beos exit ;; BePC:BeOS:*:*) # BeOS running on Intel PC compatible. echo i586-pc-beos exit ;; BePC:Haiku:*:*) # Haiku running on Intel PC compatible. echo i586-pc-haiku exit ;; SX-4:SUPER-UX:*:*) echo sx4-nec-superux${UNAME_RELEASE} exit ;; SX-5:SUPER-UX:*:*) echo sx5-nec-superux${UNAME_RELEASE} exit ;; SX-6:SUPER-UX:*:*) echo sx6-nec-superux${UNAME_RELEASE} exit ;; SX-7:SUPER-UX:*:*) echo sx7-nec-superux${UNAME_RELEASE} exit ;; SX-8:SUPER-UX:*:*) echo sx8-nec-superux${UNAME_RELEASE} exit ;; SX-8R:SUPER-UX:*:*) echo sx8r-nec-superux${UNAME_RELEASE} exit ;; Power*:Rhapsody:*:*) echo powerpc-apple-rhapsody${UNAME_RELEASE} exit ;; *:Rhapsody:*:*) echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} exit ;; *:Darwin:*:*) UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown case $UNAME_PROCESSOR in i386) eval $set_cc_for_build if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_64BIT_ARCH >/dev/null then UNAME_PROCESSOR="x86_64" fi fi ;; unknown) UNAME_PROCESSOR=powerpc ;; esac echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} exit ;; *:procnto*:*:* | *:QNX:[0123456789]*:*) UNAME_PROCESSOR=`uname -p` if test "$UNAME_PROCESSOR" = "x86"; then UNAME_PROCESSOR=i386 UNAME_MACHINE=pc fi echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} exit ;; *:QNX:*:4*) echo i386-pc-qnx exit ;; NEO-?:NONSTOP_KERNEL:*:*) echo neo-tandem-nsk${UNAME_RELEASE} exit ;; NSE-?:NONSTOP_KERNEL:*:*) echo nse-tandem-nsk${UNAME_RELEASE} exit ;; NSR-?:NONSTOP_KERNEL:*:*) echo nsr-tandem-nsk${UNAME_RELEASE} exit ;; *:NonStop-UX:*:*) echo mips-compaq-nonstopux exit ;; BS2000:POSIX*:*:*) echo bs2000-siemens-sysv exit ;; DS/*:UNIX_System_V:*:*) echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} exit ;; *:Plan9:*:*) # "uname -m" is not consistent, so use $cputype instead. 386 # is converted to i386 for consistency with other x86 # operating systems. if test "$cputype" = "386"; then UNAME_MACHINE=i386 else UNAME_MACHINE="$cputype" fi echo ${UNAME_MACHINE}-unknown-plan9 exit ;; *:TOPS-10:*:*) echo pdp10-unknown-tops10 exit ;; *:TENEX:*:*) echo pdp10-unknown-tenex exit ;; KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) echo pdp10-dec-tops20 exit ;; XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) echo pdp10-xkl-tops20 exit ;; *:TOPS-20:*:*) echo pdp10-unknown-tops20 exit ;; *:ITS:*:*) echo pdp10-unknown-its exit ;; SEI:*:*:SEIUX) echo mips-sei-seiux${UNAME_RELEASE} exit ;; *:DragonFly:*:*) echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` exit ;; *:*VMS:*:*) UNAME_MACHINE=`(uname -p) 2>/dev/null` case "${UNAME_MACHINE}" in A*) echo alpha-dec-vms ; exit ;; I*) echo ia64-dec-vms ; exit ;; V*) echo vax-dec-vms ; exit ;; esac ;; *:XENIX:*:SysV) echo i386-pc-xenix exit ;; i*86:skyos:*:*) echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//' exit ;; i*86:rdos:*:*) echo ${UNAME_MACHINE}-pc-rdos exit ;; i*86:AROS:*:*) echo ${UNAME_MACHINE}-pc-aros exit ;; esac #echo '(No uname command or uname output not recognized.)' 1>&2 #echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 eval $set_cc_for_build cat >$dummy.c < # include #endif main () { #if defined (sony) #if defined (MIPSEB) /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, I don't know.... */ printf ("mips-sony-bsd\n"); exit (0); #else #include printf ("m68k-sony-newsos%s\n", #ifdef NEWSOS4 "4" #else "" #endif ); exit (0); #endif #endif #if defined (__arm) && defined (__acorn) && defined (__unix) printf ("arm-acorn-riscix\n"); exit (0); #endif #if defined (hp300) && !defined (hpux) printf ("m68k-hp-bsd\n"); exit (0); #endif #if defined (NeXT) #if !defined (__ARCHITECTURE__) #define __ARCHITECTURE__ "m68k" #endif int version; version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; if (version < 4) printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); else printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); exit (0); #endif #if defined (MULTIMAX) || defined (n16) #if defined (UMAXV) printf ("ns32k-encore-sysv\n"); exit (0); #else #if defined (CMU) printf ("ns32k-encore-mach\n"); exit (0); #else printf ("ns32k-encore-bsd\n"); exit (0); #endif #endif #endif #if defined (__386BSD__) printf ("i386-pc-bsd\n"); exit (0); #endif #if defined (sequent) #if defined (i386) printf ("i386-sequent-dynix\n"); exit (0); #endif #if defined (ns32000) printf ("ns32k-sequent-dynix\n"); exit (0); #endif #endif #if defined (_SEQUENT_) struct utsname un; uname(&un); if (strncmp(un.version, "V2", 2) == 0) { printf ("i386-sequent-ptx2\n"); exit (0); } if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ printf ("i386-sequent-ptx1\n"); exit (0); } printf ("i386-sequent-ptx\n"); exit (0); #endif #if defined (vax) # if !defined (ultrix) # include # if defined (BSD) # if BSD == 43 printf ("vax-dec-bsd4.3\n"); exit (0); # else # if BSD == 199006 printf ("vax-dec-bsd4.3reno\n"); exit (0); # else printf ("vax-dec-bsd\n"); exit (0); # endif # endif # else printf ("vax-dec-bsd\n"); exit (0); # endif # else printf ("vax-dec-ultrix\n"); exit (0); # endif #endif #if defined (alliant) && defined (i860) printf ("i860-alliant-bsd\n"); exit (0); #endif exit (1); } EOF $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` && { echo "$SYSTEM_NAME"; exit; } # Apollos put the system type in the environment. test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; } # Convex versions that predate uname can use getsysinfo(1) if [ -x /usr/convex/getsysinfo ] then case `getsysinfo -f cpu_type` in c1*) echo c1-convex-bsd exit ;; c2*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; c34*) echo c34-convex-bsd exit ;; c38*) echo c38-convex-bsd exit ;; c4*) echo c4-convex-bsd exit ;; esac fi cat >&2 < in order to provide the needed information to handle your system. config.guess timestamp = $timestamp uname -m = `(uname -m) 2>/dev/null || echo unknown` uname -r = `(uname -r) 2>/dev/null || echo unknown` uname -s = `(uname -s) 2>/dev/null || echo unknown` uname -v = `(uname -v) 2>/dev/null || echo unknown` /usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` /bin/uname -X = `(/bin/uname -X) 2>/dev/null` hostinfo = `(hostinfo) 2>/dev/null` /bin/universe = `(/bin/universe) 2>/dev/null` /usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` /bin/arch = `(/bin/arch) 2>/dev/null` /usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` UNAME_MACHINE = ${UNAME_MACHINE} UNAME_RELEASE = ${UNAME_RELEASE} UNAME_SYSTEM = ${UNAME_SYSTEM} UNAME_VERSION = ${UNAME_VERSION} EOF exit 1 # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: jpeg-8d1/djpeg.10000644000175000017500000001663611261654326012220 0ustar billbill.TH DJPEG 1 "3 October 2009" .SH NAME djpeg \- decompress a JPEG file to an image file .SH SYNOPSIS .B djpeg [ .I options ] [ .I filename ] .LP .SH DESCRIPTION .LP .B djpeg decompresses the named JPEG file, or the standard input if no file is named, and produces an image file on the standard output. PBMPLUS (PPM/PGM), BMP, GIF, Targa, or RLE (Utah Raster Toolkit) output format can be selected. (RLE is supported only if the URT library is available.) .SH OPTIONS All switch names may be abbreviated; for example, .B \-grayscale may be written .B \-gray or .BR \-gr . Most of the "basic" switches can be abbreviated to as little as one letter. Upper and lower case are equivalent (thus .B \-BMP is the same as .BR \-bmp ). British spellings are also accepted (e.g., .BR \-greyscale ), though for brevity these are not mentioned below. .PP The basic switches are: .TP .BI \-colors " N" Reduce image to at most N colors. This reduces the number of colors used in the output image, so that it can be displayed on a colormapped display or stored in a colormapped file format. For example, if you have an 8-bit display, you'd need to reduce to 256 or fewer colors. .TP .BI \-quantize " N" Same as .BR \-colors . .B \-colors is the recommended name, .B \-quantize is provided only for backwards compatibility. .TP .B \-fast Select recommended processing options for fast, low quality output. (The default options are chosen for highest quality output.) Currently, this is equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR. .TP .B \-grayscale Force gray-scale output even if JPEG file is color. Useful for viewing on monochrome displays; also, .B djpeg runs noticeably faster in this mode. .TP .BI \-scale " M/N" Scale the output image by a factor M/N. Currently supported scale factors are M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for baseline JPEG. If the /N part is omitted, then M specifies the DCT scaled size to be applied on the given input. For baseline JPEG this is equivalent to M/8 scaling, since the source DCT size for baseline JPEG is 8. Scaling is handy if the image is larger than your screen; also, .B djpeg runs much faster when scaling down the output. .TP .B \-bmp Select BMP output format (Windows flavor). 8-bit colormapped format is emitted if .B \-colors or .B \-grayscale is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color format is emitted. .TP .B \-gif Select GIF output format. Since GIF does not support more than 256 colors, .B \-colors 256 is assumed (unless you specify a smaller number of colors). .TP .B \-os2 Select BMP output format (OS/2 1.x flavor). 8-bit colormapped format is emitted if .B \-colors or .B \-grayscale is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color format is emitted. .TP .B \-pnm Select PBMPLUS (PPM/PGM) output format (this is the default format). PGM is emitted if the JPEG file is gray-scale or if .B \-grayscale is specified; otherwise PPM is emitted. .TP .B \-rle Select RLE output format. (Requires URT library.) .TP .B \-targa Select Targa output format. Gray-scale format is emitted if the JPEG file is gray-scale or if .B \-grayscale is specified; otherwise, colormapped format is emitted if .B \-colors is specified; otherwise, 24-bit full-color format is emitted. .PP Switches for advanced users: .TP .B \-dct int Use integer DCT method (default). .TP .B \-dct fast Use fast integer DCT (less accurate). .TP .B \-dct float Use floating-point DCT method. The float method is very slightly more accurate than the int method, but is much slower unless your machine has very fast floating-point hardware. Also note that results of the floating-point method may vary slightly across machines, while the integer methods should give the same results everywhere. The fast integer method is much less accurate than the other two. .TP .B \-dither fs Use Floyd-Steinberg dithering in color quantization. .TP .B \-dither ordered Use ordered dithering in color quantization. .TP .B \-dither none Do not use dithering in color quantization. By default, Floyd-Steinberg dithering is applied when quantizing colors; this is slow but usually produces the best results. Ordered dither is a compromise between speed and quality; no dithering is fast but usually looks awful. Note that these switches have no effect unless color quantization is being done. Ordered dither is only available in .B \-onepass mode. .TP .BI \-map " file" Quantize to the colors used in the specified image file. This is useful for producing multiple files with identical color maps, or for forcing a predefined set of colors to be used. The .I file must be a GIF or PPM file. This option overrides .B \-colors and .BR \-onepass . .TP .B \-nosmooth Don't use high-quality upsampling. .TP .B \-onepass Use one-pass instead of two-pass color quantization. The one-pass method is faster and needs less memory, but it produces a lower-quality image. .B \-onepass is ignored unless you also say .B \-colors .IR N . Also, the one-pass method is always used for gray-scale output (the two-pass method is no improvement then). .TP .BI \-maxmemory " N" Set limit for amount of memory to use in processing large images. Value is in thousands of bytes, or millions of bytes if "M" is attached to the number. For example, .B \-max 4m selects 4000000 bytes. If more space is needed, temporary files will be used. .TP .BI \-outfile " name" Send output image to the named file, not to standard output. .TP .B \-verbose Enable debug printout. More .BR \-v 's give more output. Also, version information is printed at startup. .TP .B \-debug Same as .BR \-verbose . .SH EXAMPLES .LP This example decompresses the JPEG file foo.jpg, quantizes it to 256 colors, and saves the output in 8-bit BMP format in foo.bmp: .IP .B djpeg \-colors 256 \-bmp .I foo.jpg .B > .I foo.bmp .SH HINTS To get a quick preview of an image, use the .B \-grayscale and/or .B \-scale switches. .B \-grayscale \-scale 1/8 is the fastest case. .PP Several options are available that trade off image quality to gain speed. .B \-fast turns on the recommended settings. .PP .B \-dct fast and/or .B \-nosmooth gain speed at a small sacrifice in quality. When producing a color-quantized image, .B \-onepass \-dither ordered is fast but much lower quality than the default behavior. .B \-dither none may give acceptable results in two-pass mode, but is seldom tolerable in one-pass mode. .PP If you are fortunate enough to have very fast floating point hardware, \fB\-dct float\fR may be even faster than \fB\-dct fast\fR. But on most machines \fB\-dct float\fR is slower than \fB\-dct int\fR; in this case it is not worth using, because its theoretical accuracy advantage is too small to be significant in practice. .SH ENVIRONMENT .TP .B JPEGMEM If this environment variable is set, its value is the default memory limit. The value is specified as described for the .B \-maxmemory switch. .B JPEGMEM overrides the default value specified when the program was compiled, and itself is overridden by an explicit .BR \-maxmemory . .SH SEE ALSO .BR cjpeg (1), .BR jpegtran (1), .BR rdjpgcom (1), .BR wrjpgcom (1) .br .BR ppm (5), .BR pgm (5) .br Wallace, Gregory K. "The JPEG Still Picture Compression Standard", Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44. .SH AUTHOR Independent JPEG Group .SH BUGS To avoid the Unisys LZW patent, .B djpeg produces uncompressed GIF files. These are larger than they should be, but are readable by standard GIF decoders. jpeg-8d1/jdapimin.c0000644000175000017500000003064311220632314012762 0ustar billbill/* * jdapimin.c * * Copyright (C) 1994-1998, Thomas G. Lane. * Modified 2009 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains application interface code for the decompression half * of the JPEG library. These are the "minimum" API routines that may be * needed in either the normal full-decompression case or the * transcoding-only case. * * Most of the routines intended to be called directly by an application * are in this file or in jdapistd.c. But also see jcomapi.c for routines * shared by compression and decompression, and jdtrans.c for the transcoding * case. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * Initialization of a JPEG decompression object. * The error manager must already be set up (in case memory manager fails). */ GLOBAL(void) jpeg_CreateDecompress (j_decompress_ptr cinfo, int version, size_t structsize) { int i; /* Guard against version mismatches between library and caller. */ cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */ if (version != JPEG_LIB_VERSION) ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); if (structsize != SIZEOF(struct jpeg_decompress_struct)) ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, (int) SIZEOF(struct jpeg_decompress_struct), (int) structsize); /* For debugging purposes, we zero the whole master structure. * But the application has already set the err pointer, and may have set * client_data, so we have to save and restore those fields. * Note: if application hasn't set client_data, tools like Purify may * complain here. */ { struct jpeg_error_mgr * err = cinfo->err; void * client_data = cinfo->client_data; /* ignore Purify complaint here */ MEMZERO(cinfo, SIZEOF(struct jpeg_decompress_struct)); cinfo->err = err; cinfo->client_data = client_data; } cinfo->is_decompressor = TRUE; /* Initialize a memory manager instance for this object */ jinit_memory_mgr((j_common_ptr) cinfo); /* Zero out pointers to permanent structures. */ cinfo->progress = NULL; cinfo->src = NULL; for (i = 0; i < NUM_QUANT_TBLS; i++) cinfo->quant_tbl_ptrs[i] = NULL; for (i = 0; i < NUM_HUFF_TBLS; i++) { cinfo->dc_huff_tbl_ptrs[i] = NULL; cinfo->ac_huff_tbl_ptrs[i] = NULL; } /* Initialize marker processor so application can override methods * for COM, APPn markers before calling jpeg_read_header. */ cinfo->marker_list = NULL; jinit_marker_reader(cinfo); /* And initialize the overall input controller. */ jinit_input_controller(cinfo); /* OK, I'm ready */ cinfo->global_state = DSTATE_START; } /* * Destruction of a JPEG decompression object */ GLOBAL(void) jpeg_destroy_decompress (j_decompress_ptr cinfo) { jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ } /* * Abort processing of a JPEG decompression operation, * but don't destroy the object itself. */ GLOBAL(void) jpeg_abort_decompress (j_decompress_ptr cinfo) { jpeg_abort((j_common_ptr) cinfo); /* use common routine */ } /* * Set default decompression parameters. */ LOCAL(void) default_decompress_parms (j_decompress_ptr cinfo) { /* Guess the input colorspace, and set output colorspace accordingly. */ /* (Wish JPEG committee had provided a real way to specify this...) */ /* Note application may override our guesses. */ switch (cinfo->num_components) { case 1: cinfo->jpeg_color_space = JCS_GRAYSCALE; cinfo->out_color_space = JCS_GRAYSCALE; break; case 3: if (cinfo->saw_JFIF_marker) { cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */ } else if (cinfo->saw_Adobe_marker) { switch (cinfo->Adobe_transform) { case 0: cinfo->jpeg_color_space = JCS_RGB; break; case 1: cinfo->jpeg_color_space = JCS_YCbCr; break; default: WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform); cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ break; } } else { /* Saw no special markers, try to guess from the component IDs */ int cid0 = cinfo->comp_info[0].component_id; int cid1 = cinfo->comp_info[1].component_id; int cid2 = cinfo->comp_info[2].component_id; if (cid0 == 1 && cid1 == 2 && cid2 == 3) cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */ else if (cid0 == 82 && cid1 == 71 && cid2 == 66) cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */ else { TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2); cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ } } /* Always guess RGB is proper output colorspace. */ cinfo->out_color_space = JCS_RGB; break; case 4: if (cinfo->saw_Adobe_marker) { switch (cinfo->Adobe_transform) { case 0: cinfo->jpeg_color_space = JCS_CMYK; break; case 2: cinfo->jpeg_color_space = JCS_YCCK; break; default: WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform); cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */ break; } } else { /* No special markers, assume straight CMYK. */ cinfo->jpeg_color_space = JCS_CMYK; } cinfo->out_color_space = JCS_CMYK; break; default: cinfo->jpeg_color_space = JCS_UNKNOWN; cinfo->out_color_space = JCS_UNKNOWN; break; } /* Set defaults for other decompression parameters. */ cinfo->scale_num = cinfo->block_size; /* 1:1 scaling */ cinfo->scale_denom = cinfo->block_size; cinfo->output_gamma = 1.0; cinfo->buffered_image = FALSE; cinfo->raw_data_out = FALSE; cinfo->dct_method = JDCT_DEFAULT; cinfo->do_fancy_upsampling = TRUE; cinfo->do_block_smoothing = TRUE; cinfo->quantize_colors = FALSE; /* We set these in case application only sets quantize_colors. */ cinfo->dither_mode = JDITHER_FS; #ifdef QUANT_2PASS_SUPPORTED cinfo->two_pass_quantize = TRUE; #else cinfo->two_pass_quantize = FALSE; #endif cinfo->desired_number_of_colors = 256; cinfo->colormap = NULL; /* Initialize for no mode change in buffered-image mode. */ cinfo->enable_1pass_quant = FALSE; cinfo->enable_external_quant = FALSE; cinfo->enable_2pass_quant = FALSE; } /* * Decompression startup: read start of JPEG datastream to see what's there. * Need only initialize JPEG object and supply a data source before calling. * * This routine will read as far as the first SOS marker (ie, actual start of * compressed data), and will save all tables and parameters in the JPEG * object. It will also initialize the decompression parameters to default * values, and finally return JPEG_HEADER_OK. On return, the application may * adjust the decompression parameters and then call jpeg_start_decompress. * (Or, if the application only wanted to determine the image parameters, * the data need not be decompressed. In that case, call jpeg_abort or * jpeg_destroy to release any temporary space.) * If an abbreviated (tables only) datastream is presented, the routine will * return JPEG_HEADER_TABLES_ONLY upon reaching EOI. The application may then * re-use the JPEG object to read the abbreviated image datastream(s). * It is unnecessary (but OK) to call jpeg_abort in this case. * The JPEG_SUSPENDED return code only occurs if the data source module * requests suspension of the decompressor. In this case the application * should load more source data and then re-call jpeg_read_header to resume * processing. * If a non-suspending data source is used and require_image is TRUE, then the * return code need not be inspected since only JPEG_HEADER_OK is possible. * * This routine is now just a front end to jpeg_consume_input, with some * extra error checking. */ GLOBAL(int) jpeg_read_header (j_decompress_ptr cinfo, boolean require_image) { int retcode; if (cinfo->global_state != DSTATE_START && cinfo->global_state != DSTATE_INHEADER) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); retcode = jpeg_consume_input(cinfo); switch (retcode) { case JPEG_REACHED_SOS: retcode = JPEG_HEADER_OK; break; case JPEG_REACHED_EOI: if (require_image) /* Complain if application wanted an image */ ERREXIT(cinfo, JERR_NO_IMAGE); /* Reset to start state; it would be safer to require the application to * call jpeg_abort, but we can't change it now for compatibility reasons. * A side effect is to free any temporary memory (there shouldn't be any). */ jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */ retcode = JPEG_HEADER_TABLES_ONLY; break; case JPEG_SUSPENDED: /* no work */ break; } return retcode; } /* * Consume data in advance of what the decompressor requires. * This can be called at any time once the decompressor object has * been created and a data source has been set up. * * This routine is essentially a state machine that handles a couple * of critical state-transition actions, namely initial setup and * transition from header scanning to ready-for-start_decompress. * All the actual input is done via the input controller's consume_input * method. */ GLOBAL(int) jpeg_consume_input (j_decompress_ptr cinfo) { int retcode = JPEG_SUSPENDED; /* NB: every possible DSTATE value should be listed in this switch */ switch (cinfo->global_state) { case DSTATE_START: /* Start-of-datastream actions: reset appropriate modules */ (*cinfo->inputctl->reset_input_controller) (cinfo); /* Initialize application's data source module */ (*cinfo->src->init_source) (cinfo); cinfo->global_state = DSTATE_INHEADER; /*FALLTHROUGH*/ case DSTATE_INHEADER: retcode = (*cinfo->inputctl->consume_input) (cinfo); if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */ /* Set up default parameters based on header data */ default_decompress_parms(cinfo); /* Set global state: ready for start_decompress */ cinfo->global_state = DSTATE_READY; } break; case DSTATE_READY: /* Can't advance past first SOS until start_decompress is called */ retcode = JPEG_REACHED_SOS; break; case DSTATE_PRELOAD: case DSTATE_PRESCAN: case DSTATE_SCANNING: case DSTATE_RAW_OK: case DSTATE_BUFIMAGE: case DSTATE_BUFPOST: case DSTATE_STOPPING: retcode = (*cinfo->inputctl->consume_input) (cinfo); break; default: ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); } return retcode; } /* * Have we finished reading the input file? */ GLOBAL(boolean) jpeg_input_complete (j_decompress_ptr cinfo) { /* Check for valid jpeg object */ if (cinfo->global_state < DSTATE_START || cinfo->global_state > DSTATE_STOPPING) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); return cinfo->inputctl->eoi_reached; } /* * Is there more than one scan? */ GLOBAL(boolean) jpeg_has_multiple_scans (j_decompress_ptr cinfo) { /* Only valid after jpeg_read_header completes */ if (cinfo->global_state < DSTATE_READY || cinfo->global_state > DSTATE_STOPPING) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); return cinfo->inputctl->has_multiple_scans; } /* * Finish JPEG decompression. * * This will normally just verify the file trailer and release temp storage. * * Returns FALSE if suspended. The return value need be inspected only if * a suspending data source is used. */ GLOBAL(boolean) jpeg_finish_decompress (j_decompress_ptr cinfo) { if ((cinfo->global_state == DSTATE_SCANNING || cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) { /* Terminate final pass of non-buffered mode */ if (cinfo->output_scanline < cinfo->output_height) ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); (*cinfo->master->finish_output_pass) (cinfo); cinfo->global_state = DSTATE_STOPPING; } else if (cinfo->global_state == DSTATE_BUFIMAGE) { /* Finishing after a buffered-image operation */ cinfo->global_state = DSTATE_STOPPING; } else if (cinfo->global_state != DSTATE_STOPPING) { /* STOPPING = repeat call after a suspension, anything else is error */ ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); } /* Read until EOI */ while (! cinfo->inputctl->eoi_reached) { if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED) return FALSE; /* Suspend, come back later */ } /* Do final cleanup */ (*cinfo->src->term_source) (cinfo); /* We can use jpeg_abort to release memory and reset global_state */ jpeg_abort((j_common_ptr) cinfo); return TRUE; } jpeg-8d1/makecvcx.v100000644000175000017500000000701311367242120013153 0ustar billbill Release Win32 {2E7FAAD9-2F58-4BDE-81F2-1D6D3FB8BF57} Win32Proj cjpeg Application false true Unicode false $(ProjectName)\$(Configuration)\ $(ProjectName)\$(Configuration)\ Level3 NotUsing Full true false WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS true true 4996 Console true true true Release\jpeg.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) jpeg-8d1/jaricom.c0000644000175000017500000001173211647474720012633 0ustar billbill/* * jaricom.c * * Developed 1997-2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains probability estimation tables for common use in * arithmetic entropy encoding and decoding routines. * * This data represents Table D.3 in the JPEG spec (D.2 in the draft), * ISO/IEC IS 10918-1 and CCITT Recommendation ITU-T T.81, and Table 24 * in the JBIG spec, ISO/IEC IS 11544 and CCITT Recommendation ITU-T T.82. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* The following #define specifies the packing of the four components * into the compact INT32 representation. * Note that this formula must match the actual arithmetic encoder * and decoder implementation. The implementation has to be changed * if this formula is changed. * The current organization is leaned on Markus Kuhn's JBIG * implementation (jbig_tab.c). */ #define V(i,a,b,c,d) (((INT32)a << 16) | ((INT32)c << 8) | ((INT32)d << 7) | b) const INT32 jpeg_aritab[113+1] = { /* * Index, Qe_Value, Next_Index_LPS, Next_Index_MPS, Switch_MPS */ V( 0, 0x5a1d, 1, 1, 1 ), V( 1, 0x2586, 14, 2, 0 ), V( 2, 0x1114, 16, 3, 0 ), V( 3, 0x080b, 18, 4, 0 ), V( 4, 0x03d8, 20, 5, 0 ), V( 5, 0x01da, 23, 6, 0 ), V( 6, 0x00e5, 25, 7, 0 ), V( 7, 0x006f, 28, 8, 0 ), V( 8, 0x0036, 30, 9, 0 ), V( 9, 0x001a, 33, 10, 0 ), V( 10, 0x000d, 35, 11, 0 ), V( 11, 0x0006, 9, 12, 0 ), V( 12, 0x0003, 10, 13, 0 ), V( 13, 0x0001, 12, 13, 0 ), V( 14, 0x5a7f, 15, 15, 1 ), V( 15, 0x3f25, 36, 16, 0 ), V( 16, 0x2cf2, 38, 17, 0 ), V( 17, 0x207c, 39, 18, 0 ), V( 18, 0x17b9, 40, 19, 0 ), V( 19, 0x1182, 42, 20, 0 ), V( 20, 0x0cef, 43, 21, 0 ), V( 21, 0x09a1, 45, 22, 0 ), V( 22, 0x072f, 46, 23, 0 ), V( 23, 0x055c, 48, 24, 0 ), V( 24, 0x0406, 49, 25, 0 ), V( 25, 0x0303, 51, 26, 0 ), V( 26, 0x0240, 52, 27, 0 ), V( 27, 0x01b1, 54, 28, 0 ), V( 28, 0x0144, 56, 29, 0 ), V( 29, 0x00f5, 57, 30, 0 ), V( 30, 0x00b7, 59, 31, 0 ), V( 31, 0x008a, 60, 32, 0 ), V( 32, 0x0068, 62, 33, 0 ), V( 33, 0x004e, 63, 34, 0 ), V( 34, 0x003b, 32, 35, 0 ), V( 35, 0x002c, 33, 9, 0 ), V( 36, 0x5ae1, 37, 37, 1 ), V( 37, 0x484c, 64, 38, 0 ), V( 38, 0x3a0d, 65, 39, 0 ), V( 39, 0x2ef1, 67, 40, 0 ), V( 40, 0x261f, 68, 41, 0 ), V( 41, 0x1f33, 69, 42, 0 ), V( 42, 0x19a8, 70, 43, 0 ), V( 43, 0x1518, 72, 44, 0 ), V( 44, 0x1177, 73, 45, 0 ), V( 45, 0x0e74, 74, 46, 0 ), V( 46, 0x0bfb, 75, 47, 0 ), V( 47, 0x09f8, 77, 48, 0 ), V( 48, 0x0861, 78, 49, 0 ), V( 49, 0x0706, 79, 50, 0 ), V( 50, 0x05cd, 48, 51, 0 ), V( 51, 0x04de, 50, 52, 0 ), V( 52, 0x040f, 50, 53, 0 ), V( 53, 0x0363, 51, 54, 0 ), V( 54, 0x02d4, 52, 55, 0 ), V( 55, 0x025c, 53, 56, 0 ), V( 56, 0x01f8, 54, 57, 0 ), V( 57, 0x01a4, 55, 58, 0 ), V( 58, 0x0160, 56, 59, 0 ), V( 59, 0x0125, 57, 60, 0 ), V( 60, 0x00f6, 58, 61, 0 ), V( 61, 0x00cb, 59, 62, 0 ), V( 62, 0x00ab, 61, 63, 0 ), V( 63, 0x008f, 61, 32, 0 ), V( 64, 0x5b12, 65, 65, 1 ), V( 65, 0x4d04, 80, 66, 0 ), V( 66, 0x412c, 81, 67, 0 ), V( 67, 0x37d8, 82, 68, 0 ), V( 68, 0x2fe8, 83, 69, 0 ), V( 69, 0x293c, 84, 70, 0 ), V( 70, 0x2379, 86, 71, 0 ), V( 71, 0x1edf, 87, 72, 0 ), V( 72, 0x1aa9, 87, 73, 0 ), V( 73, 0x174e, 72, 74, 0 ), V( 74, 0x1424, 72, 75, 0 ), V( 75, 0x119c, 74, 76, 0 ), V( 76, 0x0f6b, 74, 77, 0 ), V( 77, 0x0d51, 75, 78, 0 ), V( 78, 0x0bb6, 77, 79, 0 ), V( 79, 0x0a40, 77, 48, 0 ), V( 80, 0x5832, 80, 81, 1 ), V( 81, 0x4d1c, 88, 82, 0 ), V( 82, 0x438e, 89, 83, 0 ), V( 83, 0x3bdd, 90, 84, 0 ), V( 84, 0x34ee, 91, 85, 0 ), V( 85, 0x2eae, 92, 86, 0 ), V( 86, 0x299a, 93, 87, 0 ), V( 87, 0x2516, 86, 71, 0 ), V( 88, 0x5570, 88, 89, 1 ), V( 89, 0x4ca9, 95, 90, 0 ), V( 90, 0x44d9, 96, 91, 0 ), V( 91, 0x3e22, 97, 92, 0 ), V( 92, 0x3824, 99, 93, 0 ), V( 93, 0x32b4, 99, 94, 0 ), V( 94, 0x2e17, 93, 86, 0 ), V( 95, 0x56a8, 95, 96, 1 ), V( 96, 0x4f46, 101, 97, 0 ), V( 97, 0x47e5, 102, 98, 0 ), V( 98, 0x41cf, 103, 99, 0 ), V( 99, 0x3c3d, 104, 100, 0 ), V( 100, 0x375e, 99, 93, 0 ), V( 101, 0x5231, 105, 102, 0 ), V( 102, 0x4c0f, 106, 103, 0 ), V( 103, 0x4639, 107, 104, 0 ), V( 104, 0x415e, 103, 99, 0 ), V( 105, 0x5627, 105, 106, 1 ), V( 106, 0x50e7, 108, 107, 0 ), V( 107, 0x4b85, 109, 103, 0 ), V( 108, 0x5597, 110, 109, 0 ), V( 109, 0x504f, 111, 107, 0 ), V( 110, 0x5a10, 110, 111, 1 ), V( 111, 0x5522, 112, 109, 0 ), V( 112, 0x59eb, 112, 111, 1 ), /* * This last entry is used for fixed probability estimate of 0.5 * as suggested in Section 10.3 Table 5 of ITU-T Rec. T.851. */ V( 113, 0x5a1d, 113, 113, 0 ) }; jpeg-8d1/jcsample.c0000644000175000017500000004672307745237420013013 0ustar billbill/* * jcsample.c * * Copyright (C) 1991-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains downsampling routines. * * Downsampling input data is counted in "row groups". A row group * is defined to be max_v_samp_factor pixel rows of each component, * from which the downsampler produces v_samp_factor sample rows. * A single row group is processed in each call to the downsampler module. * * The downsampler is responsible for edge-expansion of its output data * to fill an integral number of DCT blocks horizontally. The source buffer * may be modified if it is helpful for this purpose (the source buffer is * allocated wide enough to correspond to the desired output width). * The caller (the prep controller) is responsible for vertical padding. * * The downsampler may request "context rows" by setting need_context_rows * during startup. In this case, the input arrays will contain at least * one row group's worth of pixels above and below the passed-in data; * the caller will create dummy rows at image top and bottom by replicating * the first or last real pixel row. * * An excellent reference for image resampling is * Digital Image Warping, George Wolberg, 1990. * Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7. * * The downsampling algorithm used here is a simple average of the source * pixels covered by the output pixel. The hi-falutin sampling literature * refers to this as a "box filter". In general the characteristics of a box * filter are not very good, but for the specific cases we normally use (1:1 * and 2:1 ratios) the box is equivalent to a "triangle filter" which is not * nearly so bad. If you intend to use other sampling ratios, you'd be well * advised to improve this code. * * A simple input-smoothing capability is provided. This is mainly intended * for cleaning up color-dithered GIF input files (if you find it inadequate, * we suggest using an external filtering program such as pnmconvol). When * enabled, each input pixel P is replaced by a weighted sum of itself and its * eight neighbors. P's weight is 1-8*SF and each neighbor's weight is SF, * where SF = (smoothing_factor / 1024). * Currently, smoothing is only supported for 2h2v sampling factors. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Pointer to routine to downsample a single component */ typedef JMETHOD(void, downsample1_ptr, (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY output_data)); /* Private subobject */ typedef struct { struct jpeg_downsampler pub; /* public fields */ /* Downsampling method pointers, one per component */ downsample1_ptr methods[MAX_COMPONENTS]; /* Height of an output row group for each component. */ int rowgroup_height[MAX_COMPONENTS]; /* These arrays save pixel expansion factors so that int_downsample need not * recompute them each time. They are unused for other downsampling methods. */ UINT8 h_expand[MAX_COMPONENTS]; UINT8 v_expand[MAX_COMPONENTS]; } my_downsampler; typedef my_downsampler * my_downsample_ptr; /* * Initialize for a downsampling pass. */ METHODDEF(void) start_pass_downsample (j_compress_ptr cinfo) { /* no work for now */ } /* * Expand a component horizontally from width input_cols to width output_cols, * by duplicating the rightmost samples. */ LOCAL(void) expand_right_edge (JSAMPARRAY image_data, int num_rows, JDIMENSION input_cols, JDIMENSION output_cols) { register JSAMPROW ptr; register JSAMPLE pixval; register int count; int row; int numcols = (int) (output_cols - input_cols); if (numcols > 0) { for (row = 0; row < num_rows; row++) { ptr = image_data[row] + input_cols; pixval = ptr[-1]; /* don't need GETJSAMPLE() here */ for (count = numcols; count > 0; count--) *ptr++ = pixval; } } } /* * Do downsampling for a whole row group (all components). * * In this version we simply downsample each component independently. */ METHODDEF(void) sep_downsample (j_compress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_index, JSAMPIMAGE output_buf, JDIMENSION out_row_group_index) { my_downsample_ptr downsample = (my_downsample_ptr) cinfo->downsample; int ci; jpeg_component_info * compptr; JSAMPARRAY in_ptr, out_ptr; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { in_ptr = input_buf[ci] + in_row_index; out_ptr = output_buf[ci] + (out_row_group_index * downsample->rowgroup_height[ci]); (*downsample->methods[ci]) (cinfo, compptr, in_ptr, out_ptr); } } /* * Downsample pixel values of a single component. * One row group is processed per call. * This version handles arbitrary integral sampling ratios, without smoothing. * Note that this version is not actually used for customary sampling ratios. */ METHODDEF(void) int_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { my_downsample_ptr downsample = (my_downsample_ptr) cinfo->downsample; int inrow, outrow, h_expand, v_expand, numpix, numpix2, h, v; JDIMENSION outcol, outcol_h; /* outcol_h == outcol*h_expand */ JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size; JSAMPROW inptr, outptr; INT32 outvalue; h_expand = downsample->h_expand[compptr->component_index]; v_expand = downsample->v_expand[compptr->component_index]; numpix = h_expand * v_expand; numpix2 = numpix/2; /* Expand input data enough to let all the output samples be generated * by the standard loop. Special-casing padded output would be more * efficient. */ expand_right_edge(input_data, cinfo->max_v_samp_factor, cinfo->image_width, output_cols * h_expand); inrow = outrow = 0; while (inrow < cinfo->max_v_samp_factor) { outptr = output_data[outrow]; for (outcol = 0, outcol_h = 0; outcol < output_cols; outcol++, outcol_h += h_expand) { outvalue = 0; for (v = 0; v < v_expand; v++) { inptr = input_data[inrow+v] + outcol_h; for (h = 0; h < h_expand; h++) { outvalue += (INT32) GETJSAMPLE(*inptr++); } } *outptr++ = (JSAMPLE) ((outvalue + numpix2) / numpix); } inrow += v_expand; outrow++; } } /* * Downsample pixel values of a single component. * This version handles the special case of a full-size component, * without smoothing. */ METHODDEF(void) fullsize_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { /* Copy the data */ jcopy_sample_rows(input_data, 0, output_data, 0, cinfo->max_v_samp_factor, cinfo->image_width); /* Edge-expand */ expand_right_edge(output_data, cinfo->max_v_samp_factor, cinfo->image_width, compptr->width_in_blocks * compptr->DCT_h_scaled_size); } /* * Downsample pixel values of a single component. * This version handles the common case of 2:1 horizontal and 1:1 vertical, * without smoothing. * * A note about the "bias" calculations: when rounding fractional values to * integer, we do not want to always round 0.5 up to the next integer. * If we did that, we'd introduce a noticeable bias towards larger values. * Instead, this code is arranged so that 0.5 will be rounded up or down at * alternate pixel locations (a simple ordered dither pattern). */ METHODDEF(void) h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { int inrow; JDIMENSION outcol; JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size; register JSAMPROW inptr, outptr; register int bias; /* Expand input data enough to let all the output samples be generated * by the standard loop. Special-casing padded output would be more * efficient. */ expand_right_edge(input_data, cinfo->max_v_samp_factor, cinfo->image_width, output_cols * 2); for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) { outptr = output_data[inrow]; inptr = input_data[inrow]; bias = 0; /* bias = 0,1,0,1,... for successive samples */ for (outcol = 0; outcol < output_cols; outcol++) { *outptr++ = (JSAMPLE) ((GETJSAMPLE(*inptr) + GETJSAMPLE(inptr[1]) + bias) >> 1); bias ^= 1; /* 0=>1, 1=>0 */ inptr += 2; } } } /* * Downsample pixel values of a single component. * This version handles the standard case of 2:1 horizontal and 2:1 vertical, * without smoothing. */ METHODDEF(void) h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { int inrow, outrow; JDIMENSION outcol; JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size; register JSAMPROW inptr0, inptr1, outptr; register int bias; /* Expand input data enough to let all the output samples be generated * by the standard loop. Special-casing padded output would be more * efficient. */ expand_right_edge(input_data, cinfo->max_v_samp_factor, cinfo->image_width, output_cols * 2); inrow = outrow = 0; while (inrow < cinfo->max_v_samp_factor) { outptr = output_data[outrow]; inptr0 = input_data[inrow]; inptr1 = input_data[inrow+1]; bias = 1; /* bias = 1,2,1,2,... for successive samples */ for (outcol = 0; outcol < output_cols; outcol++) { *outptr++ = (JSAMPLE) ((GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]) + bias) >> 2); bias ^= 3; /* 1=>2, 2=>1 */ inptr0 += 2; inptr1 += 2; } inrow += 2; outrow++; } } #ifdef INPUT_SMOOTHING_SUPPORTED /* * Downsample pixel values of a single component. * This version handles the standard case of 2:1 horizontal and 2:1 vertical, * with smoothing. One row of context is required. */ METHODDEF(void) h2v2_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { int inrow, outrow; JDIMENSION colctr; JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size; register JSAMPROW inptr0, inptr1, above_ptr, below_ptr, outptr; INT32 membersum, neighsum, memberscale, neighscale; /* Expand input data enough to let all the output samples be generated * by the standard loop. Special-casing padded output would be more * efficient. */ expand_right_edge(input_data - 1, cinfo->max_v_samp_factor + 2, cinfo->image_width, output_cols * 2); /* We don't bother to form the individual "smoothed" input pixel values; * we can directly compute the output which is the average of the four * smoothed values. Each of the four member pixels contributes a fraction * (1-8*SF) to its own smoothed image and a fraction SF to each of the three * other smoothed pixels, therefore a total fraction (1-5*SF)/4 to the final * output. The four corner-adjacent neighbor pixels contribute a fraction * SF to just one smoothed pixel, or SF/4 to the final output; while the * eight edge-adjacent neighbors contribute SF to each of two smoothed * pixels, or SF/2 overall. In order to use integer arithmetic, these * factors are scaled by 2^16 = 65536. * Also recall that SF = smoothing_factor / 1024. */ memberscale = 16384 - cinfo->smoothing_factor * 80; /* scaled (1-5*SF)/4 */ neighscale = cinfo->smoothing_factor * 16; /* scaled SF/4 */ inrow = outrow = 0; while (inrow < cinfo->max_v_samp_factor) { outptr = output_data[outrow]; inptr0 = input_data[inrow]; inptr1 = input_data[inrow+1]; above_ptr = input_data[inrow-1]; below_ptr = input_data[inrow+2]; /* Special case for first column: pretend column -1 is same as column 0 */ membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]); neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) + GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) + GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[2]) + GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[2]); neighsum += neighsum; neighsum += GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[2]) + GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[2]); membersum = membersum * memberscale + neighsum * neighscale; *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); inptr0 += 2; inptr1 += 2; above_ptr += 2; below_ptr += 2; for (colctr = output_cols - 2; colctr > 0; colctr--) { /* sum of pixels directly mapped to this output element */ membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]); /* sum of edge-neighbor pixels */ neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) + GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) + GETJSAMPLE(inptr0[-1]) + GETJSAMPLE(inptr0[2]) + GETJSAMPLE(inptr1[-1]) + GETJSAMPLE(inptr1[2]); /* The edge-neighbors count twice as much as corner-neighbors */ neighsum += neighsum; /* Add in the corner-neighbors */ neighsum += GETJSAMPLE(above_ptr[-1]) + GETJSAMPLE(above_ptr[2]) + GETJSAMPLE(below_ptr[-1]) + GETJSAMPLE(below_ptr[2]); /* form final output scaled up by 2^16 */ membersum = membersum * memberscale + neighsum * neighscale; /* round, descale and output it */ *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); inptr0 += 2; inptr1 += 2; above_ptr += 2; below_ptr += 2; } /* Special case for last column */ membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]); neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) + GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) + GETJSAMPLE(inptr0[-1]) + GETJSAMPLE(inptr0[1]) + GETJSAMPLE(inptr1[-1]) + GETJSAMPLE(inptr1[1]); neighsum += neighsum; neighsum += GETJSAMPLE(above_ptr[-1]) + GETJSAMPLE(above_ptr[1]) + GETJSAMPLE(below_ptr[-1]) + GETJSAMPLE(below_ptr[1]); membersum = membersum * memberscale + neighsum * neighscale; *outptr = (JSAMPLE) ((membersum + 32768) >> 16); inrow += 2; outrow++; } } /* * Downsample pixel values of a single component. * This version handles the special case of a full-size component, * with smoothing. One row of context is required. */ METHODDEF(void) fullsize_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY output_data) { int inrow; JDIMENSION colctr; JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size; register JSAMPROW inptr, above_ptr, below_ptr, outptr; INT32 membersum, neighsum, memberscale, neighscale; int colsum, lastcolsum, nextcolsum; /* Expand input data enough to let all the output samples be generated * by the standard loop. Special-casing padded output would be more * efficient. */ expand_right_edge(input_data - 1, cinfo->max_v_samp_factor + 2, cinfo->image_width, output_cols); /* Each of the eight neighbor pixels contributes a fraction SF to the * smoothed pixel, while the main pixel contributes (1-8*SF). In order * to use integer arithmetic, these factors are multiplied by 2^16 = 65536. * Also recall that SF = smoothing_factor / 1024. */ memberscale = 65536L - cinfo->smoothing_factor * 512L; /* scaled 1-8*SF */ neighscale = cinfo->smoothing_factor * 64; /* scaled SF */ for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) { outptr = output_data[inrow]; inptr = input_data[inrow]; above_ptr = input_data[inrow-1]; below_ptr = input_data[inrow+1]; /* Special case for first column */ colsum = GETJSAMPLE(*above_ptr++) + GETJSAMPLE(*below_ptr++) + GETJSAMPLE(*inptr); membersum = GETJSAMPLE(*inptr++); nextcolsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(*below_ptr) + GETJSAMPLE(*inptr); neighsum = colsum + (colsum - membersum) + nextcolsum; membersum = membersum * memberscale + neighsum * neighscale; *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); lastcolsum = colsum; colsum = nextcolsum; for (colctr = output_cols - 2; colctr > 0; colctr--) { membersum = GETJSAMPLE(*inptr++); above_ptr++; below_ptr++; nextcolsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(*below_ptr) + GETJSAMPLE(*inptr); neighsum = lastcolsum + (colsum - membersum) + nextcolsum; membersum = membersum * memberscale + neighsum * neighscale; *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); lastcolsum = colsum; colsum = nextcolsum; } /* Special case for last column */ membersum = GETJSAMPLE(*inptr); neighsum = lastcolsum + (colsum - membersum) + colsum; membersum = membersum * memberscale + neighsum * neighscale; *outptr = (JSAMPLE) ((membersum + 32768) >> 16); } } #endif /* INPUT_SMOOTHING_SUPPORTED */ /* * Module initialization routine for downsampling. * Note that we must select a routine for each component. */ GLOBAL(void) jinit_downsampler (j_compress_ptr cinfo) { my_downsample_ptr downsample; int ci; jpeg_component_info * compptr; boolean smoothok = TRUE; int h_in_group, v_in_group, h_out_group, v_out_group; downsample = (my_downsample_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_downsampler)); cinfo->downsample = (struct jpeg_downsampler *) downsample; downsample->pub.start_pass = start_pass_downsample; downsample->pub.downsample = sep_downsample; downsample->pub.need_context_rows = FALSE; if (cinfo->CCIR601_sampling) ERREXIT(cinfo, JERR_CCIR601_NOTIMPL); /* Verify we can handle the sampling factors, and set up method pointers */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { /* Compute size of an "output group" for DCT scaling. This many samples * are to be converted from max_h_samp_factor * max_v_samp_factor pixels. */ h_out_group = (compptr->h_samp_factor * compptr->DCT_h_scaled_size) / cinfo->min_DCT_h_scaled_size; v_out_group = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) / cinfo->min_DCT_v_scaled_size; h_in_group = cinfo->max_h_samp_factor; v_in_group = cinfo->max_v_samp_factor; downsample->rowgroup_height[ci] = v_out_group; /* save for use later */ if (h_in_group == h_out_group && v_in_group == v_out_group) { #ifdef INPUT_SMOOTHING_SUPPORTED if (cinfo->smoothing_factor) { downsample->methods[ci] = fullsize_smooth_downsample; downsample->pub.need_context_rows = TRUE; } else #endif downsample->methods[ci] = fullsize_downsample; } else if (h_in_group == h_out_group * 2 && v_in_group == v_out_group) { smoothok = FALSE; downsample->methods[ci] = h2v1_downsample; } else if (h_in_group == h_out_group * 2 && v_in_group == v_out_group * 2) { #ifdef INPUT_SMOOTHING_SUPPORTED if (cinfo->smoothing_factor) { downsample->methods[ci] = h2v2_smooth_downsample; downsample->pub.need_context_rows = TRUE; } else #endif downsample->methods[ci] = h2v2_downsample; } else if ((h_in_group % h_out_group) == 0 && (v_in_group % v_out_group) == 0) { smoothok = FALSE; downsample->methods[ci] = int_downsample; downsample->h_expand[ci] = (UINT8) (h_in_group / h_out_group); downsample->v_expand[ci] = (UINT8) (v_in_group / v_out_group); } else ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL); } #ifdef INPUT_SMOOTHING_SUPPORTED if (cinfo->smoothing_factor && !smoothok) TRACEMS(cinfo, 0, JTRC_SMOOTH_NOTIMPL); #endif } jpeg-8d1/makefile.mc60000644000175000017500000003402711367317374013231 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is for Microsoft C for MS-DOS, version 6.00A and up. # Use NMAKE, not Microsoft's brain-damaged MAKE. # Thanks to Alan Wright and Chris Turner of Olivetti Research Ltd. # Read installation instructions before saying "nmake" !! # You may need to adjust these compiler options: CFLAGS = -AM -Oecigt -Gs -W3 # -AM medium memory model (or use -AS for small model, if you remove features) # -Oecigt -Gs maximum safe optimisation (-Ol has bugs in MSC 6.00A) # -W3 warning level 3 # You might also want to add -G2 if you have an 80286, etc. # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via -D switches here. # Jan-Herman Buining suggests the following switches for MS C 8.0 and a 486: # CFLAGS = /AM /f- /FPi87 /G3 /Gs /Gy /Ob1 /Oc /Oe /Og /Oi /Ol /On /Oo /Ot \ # /OV4 /W3 # except for jquant1.c, which must be compiled with /Oo- to avoid a compiler # crash. # Ingar Steinsland suggests the following switches when building # a 16-bit Windows DLL: # CFLAGS = -ALw -Gsw -Zpe -W3 -O2 -Zi -Zd # Put here the object file name for the correct system-dependent memory # manager file. For DOS, we recommend jmemdos.c and jmemdosa.asm. # (But not for Windows; see install.txt if you use this makefile for Windows.) SYSDEPMEM= jmemdos.obj jmemdosa.obj # SYSDEPMEMLIB must list the same files with "+" signs for the librarian. SYSDEPMEMLIB= +jmemdos.obj +jmemdosa.obj # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.obj jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.obj jcapistd.obj jcarith.obj jctrans.obj jcparam.obj \ jdatadst.obj jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj \ jcprepct.obj jccoefct.obj jccolor.obj jcsample.obj jchuff.obj \ jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj # decompression library object files DLIBOBJECTS= jdapimin.obj jdapistd.obj jdarith.obj jdtrans.obj jdatasrc.obj \ jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdmainct.obj \ jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj jidctflt.obj \ jidctint.obj jdsample.obj jdcolor.obj jquant1.obj jquant2.obj \ jdmerge.obj # These objectfiles are included in libjpeg.lib LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ rdswitch.obj cdjpeg.obj DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ rdcolmap.obj cdjpeg.obj TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj # need linker response file because file list > 128 chars RFILE = libjpeg.ans all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe libjpeg.lib: $(LIBOBJECTS) $(RFILE) del libjpeg.lib lib @$(RFILE) # linker response file for building libjpeg.lib $(RFILE) : makefile del $(RFILE) echo libjpeg.lib >$(RFILE) # silly want-to-create-it prompt: echo y >>$(RFILE) echo +jcapimin.obj +jcapistd.obj +jcarith.obj +jctrans.obj & >>$(RFILE) echo +jcparam.obj +jdatadst.obj +jcinit.obj +jcmaster.obj & >>$(RFILE) echo +jcmarker.obj +jcmainct.obj +jcprepct.obj & >>$(RFILE) echo +jccoefct.obj +jccolor.obj +jcsample.obj +jchuff.obj & >>$(RFILE) echo +jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj & >>$(RFILE) echo +jfdctint.obj +jdapimin.obj +jdapistd.obj & >>$(RFILE) echo +jdarith.obj +jdtrans.obj +jdatasrc.obj +jdmaster.obj & >>$(RFILE) echo +jdinput.obj +jdmarker.obj +jdhuff.obj +jdmainct.obj & >>$(RFILE) echo +jdcoefct.obj +jdpostct.obj +jddctmgr.obj & >>$(RFILE) echo +jidctfst.obj +jidctflt.obj +jidctint.obj & >>$(RFILE) echo +jdsample.obj +jdcolor.obj +jquant1.obj & >>$(RFILE) echo +jquant2.obj +jdmerge.obj +jaricom.obj +jcomapi.obj & >>$(RFILE) echo +jutils.obj +jerror.obj +jmemmgr.obj & >>$(RFILE) echo $(SYSDEPMEMLIB) ; >>$(RFILE) cjpeg.exe: $(COBJECTS) libjpeg.lib echo $(COBJECTS) >cjpeg.lst link /STACK:4096 /EXEPACK @cjpeg.lst, cjpeg.exe, , libjpeg.lib, ; del cjpeg.lst djpeg.exe: $(DOBJECTS) libjpeg.lib echo $(DOBJECTS) >djpeg.lst link /STACK:4096 /EXEPACK @djpeg.lst, djpeg.exe, , libjpeg.lib, ; del djpeg.lst jpegtran.exe: $(TROBJECTS) libjpeg.lib link /STACK:4096 /EXEPACK $(TROBJECTS), jpegtran.exe, , libjpeg.lib, ; rdjpgcom.exe: rdjpgcom.c $(CC) -AS -O -W3 rdjpgcom.c # wrjpgcom needs large model so it can malloc a 64K chunk wrjpgcom.exe: wrjpgcom.c $(CC) -AL -O -W3 wrjpgcom.c jconfig.h: jconfig.txt echo You must prepare a system-dependent jconfig.h file. echo Please read the installation directions in install.txt. exit 1 clean: del *.obj del libjpeg.lib del cjpeg.exe del djpeg.exe del jpegtran.exe del rdjpgcom.exe del wrjpgcom.exe del testout*.* test: cjpeg.exe djpeg.exe jpegtran.exe del testout*.* djpeg -dct int -ppm -outfile testout.ppm testorig.jpg djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg cjpeg -dct int -outfile testout.jpg testimg.ppm djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm jpegtran -outfile testoutt.jpg testprog.jpg fc /b testimg.ppm testout.ppm fc /b testimg.bmp testout.bmp fc /b testimg.jpg testout.jpg fc /b testimg.ppm testoutp.ppm fc /b testimgp.jpg testoutp.jpg fc /b testorig.jpg testoutt.jpg jaricom.obj: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.obj: jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.obj: 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Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file exists to provide a single place to fix any problems with * including the wrong system include files. (Common problems are taken * care of by the standard jconfig symbols, but on really weird systems * you may have to edit this file.) * * NOTE: this file is NOT intended to be included by applications using the * JPEG library. Most applications need only include jpeglib.h. */ /* Include auto-config file to find out which system include files we need. */ #include "jconfig.h" /* auto configuration options */ #define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */ /* * We need the NULL macro and size_t typedef. * On an ANSI-conforming system it is sufficient to include . * Otherwise, we get them from or ; we may have to * pull in as well. * Note that the core JPEG library does not require ; * only the default error handler and data source/destination modules do. * But we must pull it in because of the references to FILE in jpeglib.h. * You can remove those references if you want to compile without . */ #ifdef HAVE_STDDEF_H #include #endif #ifdef HAVE_STDLIB_H #include #endif #ifdef NEED_SYS_TYPES_H #include #endif #include /* * We need memory copying and zeroing functions, plus strncpy(). * ANSI and System V implementations declare these in . * BSD doesn't have the mem() functions, but it does have bcopy()/bzero(). * Some systems may declare memset and memcpy in . * * NOTE: we assume the size parameters to these functions are of type size_t. * Change the casts in these macros if not! */ #ifdef NEED_BSD_STRINGS #include #define MEMZERO(target,size) bzero((void *)(target), (size_t)(size)) #define MEMCOPY(dest,src,size) bcopy((const void *)(src), (void *)(dest), (size_t)(size)) #else /* not BSD, assume ANSI/SysV string lib */ #include #define MEMZERO(target,size) memset((void *)(target), 0, (size_t)(size)) #define MEMCOPY(dest,src,size) memcpy((void *)(dest), (const void *)(src), (size_t)(size)) #endif /* * In ANSI C, and indeed any rational implementation, size_t is also the * type returned by sizeof(). However, it seems there are some irrational * implementations out there, in which sizeof() returns an int even though * size_t is defined as long or unsigned long. To ensure consistent results * we always use this SIZEOF() macro in place of using sizeof() directly. */ #define SIZEOF(object) ((size_t) sizeof(object)) /* * The modules that use fread() and fwrite() always invoke them through * these macros. On some systems you may need to twiddle the argument casts. * CAUTION: argument order is different from underlying functions! */ #define JFREAD(file,buf,sizeofbuf) \ ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) #define JFWRITE(file,buf,sizeofbuf) \ ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) jpeg-8d1/jdapistd.c0000644000175000017500000002220607436234024012777 0ustar billbill/* * jdapistd.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains application interface code for the decompression half * of the JPEG library. These are the "standard" API routines that are * used in the normal full-decompression case. They are not used by a * transcoding-only application. Note that if an application links in * jpeg_start_decompress, it will end up linking in the entire decompressor. * We thus must separate this file from jdapimin.c to avoid linking the * whole decompression library into a transcoder. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* Forward declarations */ LOCAL(boolean) output_pass_setup JPP((j_decompress_ptr cinfo)); /* * Decompression initialization. * jpeg_read_header must be completed before calling this. * * If a multipass operating mode was selected, this will do all but the * last pass, and thus may take a great deal of time. * * Returns FALSE if suspended. The return value need be inspected only if * a suspending data source is used. */ GLOBAL(boolean) jpeg_start_decompress (j_decompress_ptr cinfo) { if (cinfo->global_state == DSTATE_READY) { /* First call: initialize master control, select active modules */ jinit_master_decompress(cinfo); if (cinfo->buffered_image) { /* No more work here; expecting jpeg_start_output next */ cinfo->global_state = DSTATE_BUFIMAGE; return TRUE; } cinfo->global_state = DSTATE_PRELOAD; } if (cinfo->global_state == DSTATE_PRELOAD) { /* If file has multiple scans, absorb them all into the coef buffer */ if (cinfo->inputctl->has_multiple_scans) { #ifdef D_MULTISCAN_FILES_SUPPORTED for (;;) { int retcode; /* Call progress monitor hook if present */ if (cinfo->progress != NULL) (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); /* Absorb some more input */ retcode = (*cinfo->inputctl->consume_input) (cinfo); if (retcode == JPEG_SUSPENDED) return FALSE; if (retcode == JPEG_REACHED_EOI) break; /* Advance progress counter if appropriate */ if (cinfo->progress != NULL && (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) { if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) { /* jdmaster underestimated number of scans; ratchet up one scan */ cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows; } } } #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif /* D_MULTISCAN_FILES_SUPPORTED */ } cinfo->output_scan_number = cinfo->input_scan_number; } else if (cinfo->global_state != DSTATE_PRESCAN) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* Perform any dummy output passes, and set up for the final pass */ return output_pass_setup(cinfo); } /* * Set up for an output pass, and perform any dummy pass(es) needed. * Common subroutine for jpeg_start_decompress and jpeg_start_output. * Entry: global_state = DSTATE_PRESCAN only if previously suspended. * Exit: If done, returns TRUE and sets global_state for proper output mode. * If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN. */ LOCAL(boolean) output_pass_setup (j_decompress_ptr cinfo) { if (cinfo->global_state != DSTATE_PRESCAN) { /* First call: do pass setup */ (*cinfo->master->prepare_for_output_pass) (cinfo); cinfo->output_scanline = 0; cinfo->global_state = DSTATE_PRESCAN; } /* Loop over any required dummy passes */ while (cinfo->master->is_dummy_pass) { #ifdef QUANT_2PASS_SUPPORTED /* Crank through the dummy pass */ while (cinfo->output_scanline < cinfo->output_height) { JDIMENSION last_scanline; /* Call progress monitor hook if present */ if (cinfo->progress != NULL) { cinfo->progress->pass_counter = (long) cinfo->output_scanline; cinfo->progress->pass_limit = (long) cinfo->output_height; (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); } /* Process some data */ last_scanline = cinfo->output_scanline; (*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL, &cinfo->output_scanline, (JDIMENSION) 0); if (cinfo->output_scanline == last_scanline) return FALSE; /* No progress made, must suspend */ } /* Finish up dummy pass, and set up for another one */ (*cinfo->master->finish_output_pass) (cinfo); (*cinfo->master->prepare_for_output_pass) (cinfo); cinfo->output_scanline = 0; #else ERREXIT(cinfo, JERR_NOT_COMPILED); #endif /* QUANT_2PASS_SUPPORTED */ } /* Ready for application to drive output pass through * jpeg_read_scanlines or jpeg_read_raw_data. */ cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING; return TRUE; } /* * Read some scanlines of data from the JPEG decompressor. * * The return value will be the number of lines actually read. * This may be less than the number requested in several cases, * including bottom of image, data source suspension, and operating * modes that emit multiple scanlines at a time. * * Note: we warn about excess calls to jpeg_read_scanlines() since * this likely signals an application programmer error. However, * an oversize buffer (max_lines > scanlines remaining) is not an error. */ GLOBAL(JDIMENSION) jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines, JDIMENSION max_lines) { JDIMENSION row_ctr; if (cinfo->global_state != DSTATE_SCANNING) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (cinfo->output_scanline >= cinfo->output_height) { WARNMS(cinfo, JWRN_TOO_MUCH_DATA); return 0; } /* Call progress monitor hook if present */ if (cinfo->progress != NULL) { cinfo->progress->pass_counter = (long) cinfo->output_scanline; cinfo->progress->pass_limit = (long) cinfo->output_height; (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); } /* Process some data */ row_ctr = 0; (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines); cinfo->output_scanline += row_ctr; return row_ctr; } /* * Alternate entry point to read raw data. * Processes exactly one iMCU row per call, unless suspended. */ GLOBAL(JDIMENSION) jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data, JDIMENSION max_lines) { JDIMENSION lines_per_iMCU_row; if (cinfo->global_state != DSTATE_RAW_OK) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (cinfo->output_scanline >= cinfo->output_height) { WARNMS(cinfo, JWRN_TOO_MUCH_DATA); return 0; } /* Call progress monitor hook if present */ if (cinfo->progress != NULL) { cinfo->progress->pass_counter = (long) cinfo->output_scanline; cinfo->progress->pass_limit = (long) cinfo->output_height; (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); } /* Verify that at least one iMCU row can be returned. */ lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size; if (max_lines < lines_per_iMCU_row) ERREXIT(cinfo, JERR_BUFFER_SIZE); /* Decompress directly into user's buffer. */ if (! (*cinfo->coef->decompress_data) (cinfo, data)) return 0; /* suspension forced, can do nothing more */ /* OK, we processed one iMCU row. */ cinfo->output_scanline += lines_per_iMCU_row; return lines_per_iMCU_row; } /* Additional entry points for buffered-image mode. */ #ifdef D_MULTISCAN_FILES_SUPPORTED /* * Initialize for an output pass in buffered-image mode. */ GLOBAL(boolean) jpeg_start_output (j_decompress_ptr cinfo, int scan_number) { if (cinfo->global_state != DSTATE_BUFIMAGE && cinfo->global_state != DSTATE_PRESCAN) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); /* Limit scan number to valid range */ if (scan_number <= 0) scan_number = 1; if (cinfo->inputctl->eoi_reached && scan_number > cinfo->input_scan_number) scan_number = cinfo->input_scan_number; cinfo->output_scan_number = scan_number; /* Perform any dummy output passes, and set up for the real pass */ return output_pass_setup(cinfo); } /* * Finish up after an output pass in buffered-image mode. * * Returns FALSE if suspended. The return value need be inspected only if * a suspending data source is used. */ GLOBAL(boolean) jpeg_finish_output (j_decompress_ptr cinfo) { if ((cinfo->global_state == DSTATE_SCANNING || cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) { /* Terminate this pass. */ /* We do not require the whole pass to have been completed. */ (*cinfo->master->finish_output_pass) (cinfo); cinfo->global_state = DSTATE_BUFPOST; } else if (cinfo->global_state != DSTATE_BUFPOST) { /* BUFPOST = repeat call after a suspension, anything else is error */ ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); } /* Read markers looking for SOS or EOI */ while (cinfo->input_scan_number <= cinfo->output_scan_number && ! cinfo->inputctl->eoi_reached) { if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED) return FALSE; /* Suspend, come back later */ } cinfo->global_state = DSTATE_BUFIMAGE; return TRUE; } #endif /* D_MULTISCAN_FILES_SUPPORTED */ jpeg-8d1/jcapistd.c0000644000175000017500000001337106073530072012777 0ustar billbill/* * jcapistd.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains application interface code for the compression half * of the JPEG library. These are the "standard" API routines that are * used in the normal full-compression case. They are not used by a * transcoding-only application. Note that if an application links in * jpeg_start_compress, it will end up linking in the entire compressor. * We thus must separate this file from jcapimin.c to avoid linking the * whole compression library into a transcoder. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * Compression initialization. * Before calling this, all parameters and a data destination must be set up. * * We require a write_all_tables parameter as a failsafe check when writing * multiple datastreams from the same compression object. Since prior runs * will have left all the tables marked sent_table=TRUE, a subsequent run * would emit an abbreviated stream (no tables) by default. This may be what * is wanted, but for safety's sake it should not be the default behavior: * programmers should have to make a deliberate choice to emit abbreviated * images. Therefore the documentation and examples should encourage people * to pass write_all_tables=TRUE; then it will take active thought to do the * wrong thing. */ GLOBAL(void) jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables) { if (cinfo->global_state != CSTATE_START) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (write_all_tables) jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */ /* (Re)initialize error mgr and destination modules */ (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); (*cinfo->dest->init_destination) (cinfo); /* Perform master selection of active modules */ jinit_compress_master(cinfo); /* Set up for the first pass */ (*cinfo->master->prepare_for_pass) (cinfo); /* Ready for application to drive first pass through jpeg_write_scanlines * or jpeg_write_raw_data. */ cinfo->next_scanline = 0; cinfo->global_state = (cinfo->raw_data_in ? CSTATE_RAW_OK : CSTATE_SCANNING); } /* * Write some scanlines of data to the JPEG compressor. * * The return value will be the number of lines actually written. * This should be less than the supplied num_lines only in case that * the data destination module has requested suspension of the compressor, * or if more than image_height scanlines are passed in. * * Note: we warn about excess calls to jpeg_write_scanlines() since * this likely signals an application programmer error. However, * excess scanlines passed in the last valid call are *silently* ignored, * so that the application need not adjust num_lines for end-of-image * when using a multiple-scanline buffer. */ GLOBAL(JDIMENSION) jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines, JDIMENSION num_lines) { JDIMENSION row_ctr, rows_left; if (cinfo->global_state != CSTATE_SCANNING) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (cinfo->next_scanline >= cinfo->image_height) WARNMS(cinfo, JWRN_TOO_MUCH_DATA); /* Call progress monitor hook if present */ if (cinfo->progress != NULL) { cinfo->progress->pass_counter = (long) cinfo->next_scanline; cinfo->progress->pass_limit = (long) cinfo->image_height; (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); } /* Give master control module another chance if this is first call to * jpeg_write_scanlines. This lets output of the frame/scan headers be * delayed so that application can write COM, etc, markers between * jpeg_start_compress and jpeg_write_scanlines. */ if (cinfo->master->call_pass_startup) (*cinfo->master->pass_startup) (cinfo); /* Ignore any extra scanlines at bottom of image. */ rows_left = cinfo->image_height - cinfo->next_scanline; if (num_lines > rows_left) num_lines = rows_left; row_ctr = 0; (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines); cinfo->next_scanline += row_ctr; return row_ctr; } /* * Alternate entry point to write raw data. * Processes exactly one iMCU row per call, unless suspended. */ GLOBAL(JDIMENSION) jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data, JDIMENSION num_lines) { JDIMENSION lines_per_iMCU_row; if (cinfo->global_state != CSTATE_RAW_OK) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (cinfo->next_scanline >= cinfo->image_height) { WARNMS(cinfo, JWRN_TOO_MUCH_DATA); return 0; } /* Call progress monitor hook if present */ if (cinfo->progress != NULL) { cinfo->progress->pass_counter = (long) cinfo->next_scanline; cinfo->progress->pass_limit = (long) cinfo->image_height; (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); } /* Give master control module another chance if this is first call to * jpeg_write_raw_data. This lets output of the frame/scan headers be * delayed so that application can write COM, etc, markers between * jpeg_start_compress and jpeg_write_raw_data. */ if (cinfo->master->call_pass_startup) (*cinfo->master->pass_startup) (cinfo); /* Verify that at least one iMCU row has been passed. */ lines_per_iMCU_row = cinfo->max_v_samp_factor * DCTSIZE; if (num_lines < lines_per_iMCU_row) ERREXIT(cinfo, JERR_BUFFER_SIZE); /* Directly compress the row. */ if (! (*cinfo->coef->compress_data) (cinfo, data)) { /* If compressor did not consume the whole row, suspend processing. */ return 0; } /* OK, we processed one iMCU row. */ cinfo->next_scanline += lines_per_iMCU_row; return lines_per_iMCU_row; } jpeg-8d1/makefile.manx0000644000175000017500000002760511367317342013506 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is for Amiga systems using Manx Aztec C ver 5.x. # Thanks to D.J. James (djjames@cup.portal.com) for this version. # Read installation instructions before saying "make" !! # The name of your C compiler: CC= cc # You may need to adjust these cc options: # Uncomment for generic 68000 code (will work on any Amiga) ARCHFLAGS= -sn # Uncomment for 68020/68030 code (faster, but won't run on 68000 CPU) #ARCHFLAGS= -c2 CFLAGS= -MC -MD $(ARCHFLAGS) -spfam -r4 # Link-time cc options: LDFLAGS= -g # To link any special libraries, add the necessary -l commands here. LDLIBS= -lml -lcl # Put here the object file name for the correct system-dependent memory # manager file. For Amiga we recommend jmemname.o. SYSDEPMEM= jmemname.o # miscellaneous OS-dependent stuff # linker LN= ln # file deletion command RM= delete quiet # library (.lib) file creation command AR= lb # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.o jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.o jcapistd.o jcarith.o jctrans.o jcparam.o \ jdatadst.o jcinit.o jcmaster.o jcmarker.o jcmainct.o jcprepct.o \ jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o jfdctfst.o \ jfdctflt.o jfdctint.o # decompression library object files DLIBOBJECTS= jdapimin.o jdapistd.o jdarith.o jdtrans.o jdatasrc.o \ jdmaster.o jdinput.o jdmarker.o jdhuff.o jdmainct.o \ jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o \ jidctint.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o # These objectfiles are included in libjpeg.lib LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ cdjpeg.o DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ cdjpeg.o TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o all: libjpeg.lib cjpeg djpeg jpegtran rdjpgcom wrjpgcom libjpeg.lib: $(LIBOBJECTS) -$(RM) libjpeg.lib $(AR) libjpeg.lib $(LIBOBJECTS) cjpeg: $(COBJECTS) libjpeg.lib $(LN) $(LDFLAGS) -o cjpeg $(COBJECTS) libjpeg.lib $(LDLIBS) djpeg: $(DOBJECTS) libjpeg.lib $(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.lib $(LDLIBS) jpegtran: $(TROBJECTS) libjpeg.lib $(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.lib $(LDLIBS) rdjpgcom: rdjpgcom.o $(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS) wrjpgcom: wrjpgcom.o $(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.o $(LDLIBS) jconfig.h: jconfig.txt echo You must prepare a system-dependent jconfig.h file. echo Please read the installation directions in install.txt. exit 1 clean: -$(RM) *.o cjpeg djpeg jpegtran libjpeg.lib rdjpgcom wrjpgcom -$(RM) core testout*.* test: cjpeg djpeg jpegtran -$(RM) testout*.* djpeg -dct int -ppm -outfile testout.ppm testorig.jpg djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg cjpeg -dct int -outfile testout.jpg testimg.ppm djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm jpegtran -outfile testoutt.jpg testprog.jpg cmp testimg.ppm testout.ppm cmp testimg.bmp testout.bmp cmp testimg.jpg testout.jpg cmp testimg.ppm testoutp.ppm cmp testimgp.jpg testoutp.jpg cmp testorig.jpg testoutt.jpg jaricom.o: jaricom.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcarith.o: jcarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdarith.o: jdarith.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jpeg-8d1/jmemmgr.c0000644000175000017500000012010011633107136012620 0ustar billbill/* * jmemmgr.c * * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 2011 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains the JPEG system-independent memory management * routines. This code is usable across a wide variety of machines; most * of the system dependencies have been isolated in a separate file. * The major functions provided here are: * * pool-based allocation and freeing of memory; * * policy decisions about how to divide available memory among the * virtual arrays; * * control logic for swapping virtual arrays between main memory and * backing storage. * The separate system-dependent file provides the actual backing-storage * access code, and it contains the policy decision about how much total * main memory to use. * This file is system-dependent in the sense that some of its functions * are unnecessary in some systems. For example, if there is enough virtual * memory so that backing storage will never be used, much of the virtual * array control logic could be removed. (Of course, if you have that much * memory then you shouldn't care about a little bit of unused code...) */ #define JPEG_INTERNALS #define AM_MEMORY_MANAGER /* we define jvirt_Xarray_control structs */ #include "jinclude.h" #include "jpeglib.h" #include "jmemsys.h" /* import the system-dependent declarations */ #ifndef NO_GETENV #ifndef HAVE_STDLIB_H /* should declare getenv() */ extern char * getenv JPP((const char * name)); #endif #endif /* * Some important notes: * The allocation routines provided here must never return NULL. * They should exit to error_exit if unsuccessful. * * It's not a good idea to try to merge the sarray and barray routines, * even though they are textually almost the same, because samples are * usually stored as bytes while coefficients are shorts or ints. Thus, * in machines where byte pointers have a different representation from * word pointers, the resulting machine code could not be the same. */ /* * Many machines require storage alignment: longs must start on 4-byte * boundaries, doubles on 8-byte boundaries, etc. On such machines, malloc() * always returns pointers that are multiples of the worst-case alignment * requirement, and we had better do so too. * There isn't any really portable way to determine the worst-case alignment * requirement. This module assumes that the alignment requirement is * multiples of sizeof(ALIGN_TYPE). * By default, we define ALIGN_TYPE as double. This is necessary on some * workstations (where doubles really do need 8-byte alignment) and will work * fine on nearly everything. If your machine has lesser alignment needs, * you can save a few bytes by making ALIGN_TYPE smaller. * The only place I know of where this will NOT work is certain Macintosh * 680x0 compilers that define double as a 10-byte IEEE extended float. * Doing 10-byte alignment is counterproductive because longwords won't be * aligned well. Put "#define ALIGN_TYPE long" in jconfig.h if you have * such a compiler. */ #ifndef ALIGN_TYPE /* so can override from jconfig.h */ #define ALIGN_TYPE double #endif /* * We allocate objects from "pools", where each pool is gotten with a single * request to jpeg_get_small() or jpeg_get_large(). There is no per-object * overhead within a pool, except for alignment padding. Each pool has a * header with a link to the next pool of the same class. * Small and large pool headers are identical except that the latter's * link pointer must be FAR on 80x86 machines. * Notice that the "real" header fields are union'ed with a dummy ALIGN_TYPE * field. This forces the compiler to make SIZEOF(small_pool_hdr) a multiple * of the alignment requirement of ALIGN_TYPE. */ typedef union small_pool_struct * small_pool_ptr; typedef union small_pool_struct { struct { small_pool_ptr next; /* next in list of pools */ size_t bytes_used; /* how many bytes already used within pool */ size_t bytes_left; /* bytes still available in this pool */ } hdr; ALIGN_TYPE dummy; /* included in union to ensure alignment */ } small_pool_hdr; typedef union large_pool_struct FAR * large_pool_ptr; typedef union large_pool_struct { struct { large_pool_ptr next; /* next in list of pools */ size_t bytes_used; /* how many bytes already used within pool */ size_t bytes_left; /* bytes still available in this pool */ } hdr; ALIGN_TYPE dummy; /* included in union to ensure alignment */ } large_pool_hdr; /* * Here is the full definition of a memory manager object. */ typedef struct { struct jpeg_memory_mgr pub; /* public fields */ /* Each pool identifier (lifetime class) names a linked list of pools. */ small_pool_ptr small_list[JPOOL_NUMPOOLS]; large_pool_ptr large_list[JPOOL_NUMPOOLS]; /* Since we only have one lifetime class of virtual arrays, only one * linked list is necessary (for each datatype). Note that the virtual * array control blocks being linked together are actually stored somewhere * in the small-pool list. */ jvirt_sarray_ptr virt_sarray_list; jvirt_barray_ptr virt_barray_list; /* This counts total space obtained from jpeg_get_small/large */ long total_space_allocated; /* alloc_sarray and alloc_barray set this value for use by virtual * array routines. */ JDIMENSION last_rowsperchunk; /* from most recent alloc_sarray/barray */ } my_memory_mgr; typedef my_memory_mgr * my_mem_ptr; /* * The control blocks for virtual arrays. * Note that these blocks are allocated in the "small" pool area. * System-dependent info for the associated backing store (if any) is hidden * inside the backing_store_info struct. */ struct jvirt_sarray_control { JSAMPARRAY mem_buffer; /* => the in-memory buffer */ JDIMENSION rows_in_array; /* total virtual array height */ JDIMENSION samplesperrow; /* width of array (and of memory buffer) */ JDIMENSION maxaccess; /* max rows accessed by access_virt_sarray */ JDIMENSION rows_in_mem; /* height of memory buffer */ JDIMENSION rowsperchunk; /* allocation chunk size in mem_buffer */ JDIMENSION cur_start_row; /* first logical row # in the buffer */ JDIMENSION first_undef_row; /* row # of first uninitialized row */ boolean pre_zero; /* pre-zero mode requested? */ boolean dirty; /* do current buffer contents need written? */ boolean b_s_open; /* is backing-store data valid? */ jvirt_sarray_ptr next; /* link to next virtual sarray control block */ backing_store_info b_s_info; /* System-dependent control info */ }; struct jvirt_barray_control { JBLOCKARRAY mem_buffer; /* => the in-memory buffer */ JDIMENSION rows_in_array; /* total virtual array height */ JDIMENSION blocksperrow; /* width of array (and of memory buffer) */ JDIMENSION maxaccess; /* max rows accessed by access_virt_barray */ JDIMENSION rows_in_mem; /* height of memory buffer */ JDIMENSION rowsperchunk; /* allocation chunk size in mem_buffer */ JDIMENSION cur_start_row; /* first logical row # in the buffer */ JDIMENSION first_undef_row; /* row # of first uninitialized row */ boolean pre_zero; /* pre-zero mode requested? */ boolean dirty; /* do current buffer contents need written? */ boolean b_s_open; /* is backing-store data valid? */ jvirt_barray_ptr next; /* link to next virtual barray control block */ backing_store_info b_s_info; /* System-dependent control info */ }; #ifdef MEM_STATS /* optional extra stuff for statistics */ LOCAL(void) print_mem_stats (j_common_ptr cinfo, int pool_id) { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; small_pool_ptr shdr_ptr; large_pool_ptr lhdr_ptr; /* Since this is only a debugging stub, we can cheat a little by using * fprintf directly rather than going through the trace message code. * This is helpful because message parm array can't handle longs. */ fprintf(stderr, "Freeing pool %d, total space = %ld\n", pool_id, mem->total_space_allocated); for (lhdr_ptr = mem->large_list[pool_id]; lhdr_ptr != NULL; lhdr_ptr = lhdr_ptr->hdr.next) { fprintf(stderr, " Large chunk used %ld\n", (long) lhdr_ptr->hdr.bytes_used); } for (shdr_ptr = mem->small_list[pool_id]; shdr_ptr != NULL; shdr_ptr = shdr_ptr->hdr.next) { fprintf(stderr, " Small chunk used %ld free %ld\n", (long) shdr_ptr->hdr.bytes_used, (long) shdr_ptr->hdr.bytes_left); } } #endif /* MEM_STATS */ LOCAL(void) out_of_memory (j_common_ptr cinfo, int which) /* Report an out-of-memory error and stop execution */ /* If we compiled MEM_STATS support, report alloc requests before dying */ { #ifdef MEM_STATS cinfo->err->trace_level = 2; /* force self_destruct to report stats */ #endif ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, which); } /* * Allocation of "small" objects. * * For these, we use pooled storage. When a new pool must be created, * we try to get enough space for the current request plus a "slop" factor, * where the slop will be the amount of leftover space in the new pool. * The speed vs. space tradeoff is largely determined by the slop values. * A different slop value is provided for each pool class (lifetime), * and we also distinguish the first pool of a class from later ones. * NOTE: the values given work fairly well on both 16- and 32-bit-int * machines, but may be too small if longs are 64 bits or more. */ static const size_t first_pool_slop[JPOOL_NUMPOOLS] = { 1600, /* first PERMANENT pool */ 16000 /* first IMAGE pool */ }; static const size_t extra_pool_slop[JPOOL_NUMPOOLS] = { 0, /* additional PERMANENT pools */ 5000 /* additional IMAGE pools */ }; #define MIN_SLOP 50 /* greater than 0 to avoid futile looping */ METHODDEF(void *) alloc_small (j_common_ptr cinfo, int pool_id, size_t sizeofobject) /* Allocate a "small" object */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; small_pool_ptr hdr_ptr, prev_hdr_ptr; char * data_ptr; size_t odd_bytes, min_request, slop; /* Check for unsatisfiable request (do now to ensure no overflow below) */ if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(small_pool_hdr))) out_of_memory(cinfo, 1); /* request exceeds malloc's ability */ /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */ odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE); if (odd_bytes > 0) sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes; /* See if space is available in any existing pool */ if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS) ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ prev_hdr_ptr = NULL; hdr_ptr = mem->small_list[pool_id]; while (hdr_ptr != NULL) { if (hdr_ptr->hdr.bytes_left >= sizeofobject) break; /* found pool with enough space */ prev_hdr_ptr = hdr_ptr; hdr_ptr = hdr_ptr->hdr.next; } /* Time to make a new pool? */ if (hdr_ptr == NULL) { /* min_request is what we need now, slop is what will be leftover */ min_request = sizeofobject + SIZEOF(small_pool_hdr); if (prev_hdr_ptr == NULL) /* first pool in class? */ slop = first_pool_slop[pool_id]; else slop = extra_pool_slop[pool_id]; /* Don't ask for more than MAX_ALLOC_CHUNK */ if (slop > (size_t) (MAX_ALLOC_CHUNK-min_request)) slop = (size_t) (MAX_ALLOC_CHUNK-min_request); /* Try to get space, if fail reduce slop and try again */ for (;;) { hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop); if (hdr_ptr != NULL) break; slop /= 2; if (slop < MIN_SLOP) /* give up when it gets real small */ out_of_memory(cinfo, 2); /* jpeg_get_small failed */ } mem->total_space_allocated += min_request + slop; /* Success, initialize the new pool header and add to end of list */ hdr_ptr->hdr.next = NULL; hdr_ptr->hdr.bytes_used = 0; hdr_ptr->hdr.bytes_left = sizeofobject + slop; if (prev_hdr_ptr == NULL) /* first pool in class? */ mem->small_list[pool_id] = hdr_ptr; else prev_hdr_ptr->hdr.next = hdr_ptr; } /* OK, allocate the object from the current pool */ data_ptr = (char *) (hdr_ptr + 1); /* point to first data byte in pool */ data_ptr += hdr_ptr->hdr.bytes_used; /* point to place for object */ hdr_ptr->hdr.bytes_used += sizeofobject; hdr_ptr->hdr.bytes_left -= sizeofobject; return (void *) data_ptr; } /* * Allocation of "large" objects. * * The external semantics of these are the same as "small" objects, * except that FAR pointers are used on 80x86. However the pool * management heuristics are quite different. We assume that each * request is large enough that it may as well be passed directly to * jpeg_get_large; the pool management just links everything together * so that we can free it all on demand. * Note: the major use of "large" objects is in JSAMPARRAY and JBLOCKARRAY * structures. The routines that create these structures (see below) * deliberately bunch rows together to ensure a large request size. */ METHODDEF(void FAR *) alloc_large (j_common_ptr cinfo, int pool_id, size_t sizeofobject) /* Allocate a "large" object */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; large_pool_ptr hdr_ptr; size_t odd_bytes; /* Check for unsatisfiable request (do now to ensure no overflow below) */ if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr))) out_of_memory(cinfo, 3); /* request exceeds malloc's ability */ /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */ odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE); if (odd_bytes > 0) sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes; /* Always make a new pool */ if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS) ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ hdr_ptr = (large_pool_ptr) jpeg_get_large(cinfo, sizeofobject + SIZEOF(large_pool_hdr)); if (hdr_ptr == NULL) out_of_memory(cinfo, 4); /* jpeg_get_large failed */ mem->total_space_allocated += sizeofobject + SIZEOF(large_pool_hdr); /* Success, initialize the new pool header and add to list */ hdr_ptr->hdr.next = mem->large_list[pool_id]; /* We maintain space counts in each pool header for statistical purposes, * even though they are not needed for allocation. */ hdr_ptr->hdr.bytes_used = sizeofobject; hdr_ptr->hdr.bytes_left = 0; mem->large_list[pool_id] = hdr_ptr; return (void FAR *) (hdr_ptr + 1); /* point to first data byte in pool */ } /* * Creation of 2-D sample arrays. * The pointers are in near heap, the samples themselves in FAR heap. * * To minimize allocation overhead and to allow I/O of large contiguous * blocks, we allocate the sample rows in groups of as many rows as possible * without exceeding MAX_ALLOC_CHUNK total bytes per allocation request. * NB: the virtual array control routines, later in this file, know about * this chunking of rows. The rowsperchunk value is left in the mem manager * object so that it can be saved away if this sarray is the workspace for * a virtual array. */ METHODDEF(JSAMPARRAY) alloc_sarray (j_common_ptr cinfo, int pool_id, JDIMENSION samplesperrow, JDIMENSION numrows) /* Allocate a 2-D sample array */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; JSAMPARRAY result; JSAMPROW workspace; JDIMENSION rowsperchunk, currow, i; long ltemp; /* Calculate max # of rows allowed in one allocation chunk */ ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) / ((long) samplesperrow * SIZEOF(JSAMPLE)); if (ltemp <= 0) ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); if (ltemp < (long) numrows) rowsperchunk = (JDIMENSION) ltemp; else rowsperchunk = numrows; mem->last_rowsperchunk = rowsperchunk; /* Get space for row pointers (small object) */ result = (JSAMPARRAY) alloc_small(cinfo, pool_id, (size_t) (numrows * SIZEOF(JSAMPROW))); /* Get the rows themselves (large objects) */ currow = 0; while (currow < numrows) { rowsperchunk = MIN(rowsperchunk, numrows - currow); workspace = (JSAMPROW) alloc_large(cinfo, pool_id, (size_t) ((size_t) rowsperchunk * (size_t) samplesperrow * SIZEOF(JSAMPLE))); for (i = rowsperchunk; i > 0; i--) { result[currow++] = workspace; workspace += samplesperrow; } } return result; } /* * Creation of 2-D coefficient-block arrays. * This is essentially the same as the code for sample arrays, above. */ METHODDEF(JBLOCKARRAY) alloc_barray (j_common_ptr cinfo, int pool_id, JDIMENSION blocksperrow, JDIMENSION numrows) /* Allocate a 2-D coefficient-block array */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; JBLOCKARRAY result; JBLOCKROW workspace; JDIMENSION rowsperchunk, currow, i; long ltemp; /* Calculate max # of rows allowed in one allocation chunk */ ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) / ((long) blocksperrow * SIZEOF(JBLOCK)); if (ltemp <= 0) ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); if (ltemp < (long) numrows) rowsperchunk = (JDIMENSION) ltemp; else rowsperchunk = numrows; mem->last_rowsperchunk = rowsperchunk; /* Get space for row pointers (small object) */ result = (JBLOCKARRAY) alloc_small(cinfo, pool_id, (size_t) (numrows * SIZEOF(JBLOCKROW))); /* Get the rows themselves (large objects) */ currow = 0; while (currow < numrows) { rowsperchunk = MIN(rowsperchunk, numrows - currow); workspace = (JBLOCKROW) alloc_large(cinfo, pool_id, (size_t) ((size_t) rowsperchunk * (size_t) blocksperrow * SIZEOF(JBLOCK))); for (i = rowsperchunk; i > 0; i--) { result[currow++] = workspace; workspace += blocksperrow; } } return result; } /* * About virtual array management: * * The above "normal" array routines are only used to allocate strip buffers * (as wide as the image, but just a few rows high). Full-image-sized buffers * are handled as "virtual" arrays. The array is still accessed a strip at a * time, but the memory manager must save the whole array for repeated * accesses. The intended implementation is that there is a strip buffer in * memory (as high as is possible given the desired memory limit), plus a * backing file that holds the rest of the array. * * The request_virt_array routines are told the total size of the image and * the maximum number of rows that will be accessed at once. The in-memory * buffer must be at least as large as the maxaccess value. * * The request routines create control blocks but not the in-memory buffers. * That is postponed until realize_virt_arrays is called. At that time the * total amount of space needed is known (approximately, anyway), so free * memory can be divided up fairly. * * The access_virt_array routines are responsible for making a specific strip * area accessible (after reading or writing the backing file, if necessary). * Note that the access routines are told whether the caller intends to modify * the accessed strip; during a read-only pass this saves having to rewrite * data to disk. The access routines are also responsible for pre-zeroing * any newly accessed rows, if pre-zeroing was requested. * * In current usage, the access requests are usually for nonoverlapping * strips; that is, successive access start_row numbers differ by exactly * num_rows = maxaccess. This means we can get good performance with simple * buffer dump/reload logic, by making the in-memory buffer be a multiple * of the access height; then there will never be accesses across bufferload * boundaries. The code will still work with overlapping access requests, * but it doesn't handle bufferload overlaps very efficiently. */ METHODDEF(jvirt_sarray_ptr) request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION samplesperrow, JDIMENSION numrows, JDIMENSION maxaccess) /* Request a virtual 2-D sample array */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; jvirt_sarray_ptr result; /* Only IMAGE-lifetime virtual arrays are currently supported */ if (pool_id != JPOOL_IMAGE) ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ /* get control block */ result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id, SIZEOF(struct jvirt_sarray_control)); result->mem_buffer = NULL; /* marks array not yet realized */ result->rows_in_array = numrows; result->samplesperrow = samplesperrow; result->maxaccess = maxaccess; result->pre_zero = pre_zero; result->b_s_open = FALSE; /* no associated backing-store object */ result->next = mem->virt_sarray_list; /* add to list of virtual arrays */ mem->virt_sarray_list = result; return result; } METHODDEF(jvirt_barray_ptr) request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero, JDIMENSION blocksperrow, JDIMENSION numrows, JDIMENSION maxaccess) /* Request a virtual 2-D coefficient-block array */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; jvirt_barray_ptr result; /* Only IMAGE-lifetime virtual arrays are currently supported */ if (pool_id != JPOOL_IMAGE) ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ /* get control block */ result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id, SIZEOF(struct jvirt_barray_control)); result->mem_buffer = NULL; /* marks array not yet realized */ result->rows_in_array = numrows; result->blocksperrow = blocksperrow; result->maxaccess = maxaccess; result->pre_zero = pre_zero; result->b_s_open = FALSE; /* no associated backing-store object */ result->next = mem->virt_barray_list; /* add to list of virtual arrays */ mem->virt_barray_list = result; return result; } METHODDEF(void) realize_virt_arrays (j_common_ptr cinfo) /* Allocate the in-memory buffers for any unrealized virtual arrays */ { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; long space_per_minheight, maximum_space, avail_mem; long minheights, max_minheights; jvirt_sarray_ptr sptr; jvirt_barray_ptr bptr; /* Compute the minimum space needed (maxaccess rows in each buffer) * and the maximum space needed (full image height in each buffer). * These may be of use to the system-dependent jpeg_mem_available routine. */ space_per_minheight = 0; maximum_space = 0; for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) { if (sptr->mem_buffer == NULL) { /* if not realized yet */ space_per_minheight += (long) sptr->maxaccess * (long) sptr->samplesperrow * SIZEOF(JSAMPLE); maximum_space += (long) sptr->rows_in_array * (long) sptr->samplesperrow * SIZEOF(JSAMPLE); } } for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) { if (bptr->mem_buffer == NULL) { /* if not realized yet */ space_per_minheight += (long) bptr->maxaccess * (long) bptr->blocksperrow * SIZEOF(JBLOCK); maximum_space += (long) bptr->rows_in_array * (long) bptr->blocksperrow * SIZEOF(JBLOCK); } } if (space_per_minheight <= 0) return; /* no unrealized arrays, no work */ /* Determine amount of memory to actually use; this is system-dependent. */ avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space, mem->total_space_allocated); /* If the maximum space needed is available, make all the buffers full * height; otherwise parcel it out with the same number of minheights * in each buffer. */ if (avail_mem >= maximum_space) max_minheights = 1000000000L; else { max_minheights = avail_mem / space_per_minheight; /* If there doesn't seem to be enough space, try to get the minimum * anyway. This allows a "stub" implementation of jpeg_mem_available(). */ if (max_minheights <= 0) max_minheights = 1; } /* Allocate the in-memory buffers and initialize backing store as needed. */ for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) { if (sptr->mem_buffer == NULL) { /* if not realized yet */ minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L; if (minheights <= max_minheights) { /* This buffer fits in memory */ sptr->rows_in_mem = sptr->rows_in_array; } else { /* It doesn't fit in memory, create backing store. */ sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess); jpeg_open_backing_store(cinfo, & sptr->b_s_info, (long) sptr->rows_in_array * (long) sptr->samplesperrow * (long) SIZEOF(JSAMPLE)); sptr->b_s_open = TRUE; } sptr->mem_buffer = alloc_sarray(cinfo, JPOOL_IMAGE, sptr->samplesperrow, sptr->rows_in_mem); sptr->rowsperchunk = mem->last_rowsperchunk; sptr->cur_start_row = 0; sptr->first_undef_row = 0; sptr->dirty = FALSE; } } for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) { if (bptr->mem_buffer == NULL) { /* if not realized yet */ minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L; if (minheights <= max_minheights) { /* This buffer fits in memory */ bptr->rows_in_mem = bptr->rows_in_array; } else { /* It doesn't fit in memory, create backing store. */ bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess); jpeg_open_backing_store(cinfo, & bptr->b_s_info, (long) bptr->rows_in_array * (long) bptr->blocksperrow * (long) SIZEOF(JBLOCK)); bptr->b_s_open = TRUE; } bptr->mem_buffer = alloc_barray(cinfo, JPOOL_IMAGE, bptr->blocksperrow, bptr->rows_in_mem); bptr->rowsperchunk = mem->last_rowsperchunk; bptr->cur_start_row = 0; bptr->first_undef_row = 0; bptr->dirty = FALSE; } } } LOCAL(void) do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing) /* Do backing store read or write of a virtual sample array */ { long bytesperrow, file_offset, byte_count, rows, thisrow, i; bytesperrow = (long) ptr->samplesperrow * SIZEOF(JSAMPLE); file_offset = ptr->cur_start_row * bytesperrow; /* Loop to read or write each allocation chunk in mem_buffer */ for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) { /* One chunk, but check for short chunk at end of buffer */ rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i); /* Transfer no more than is currently defined */ thisrow = (long) ptr->cur_start_row + i; rows = MIN(rows, (long) ptr->first_undef_row - thisrow); /* Transfer no more than fits in file */ rows = MIN(rows, (long) ptr->rows_in_array - thisrow); if (rows <= 0) /* this chunk might be past end of file! */ break; byte_count = rows * bytesperrow; if (writing) (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info, (void FAR *) ptr->mem_buffer[i], file_offset, byte_count); else (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info, (void FAR *) ptr->mem_buffer[i], file_offset, byte_count); file_offset += byte_count; } } LOCAL(void) do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing) /* Do backing store read or write of a virtual coefficient-block array */ { long bytesperrow, file_offset, byte_count, rows, thisrow, i; bytesperrow = (long) ptr->blocksperrow * SIZEOF(JBLOCK); file_offset = ptr->cur_start_row * bytesperrow; /* Loop to read or write each allocation chunk in mem_buffer */ for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) { /* One chunk, but check for short chunk at end of buffer */ rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i); /* Transfer no more than is currently defined */ thisrow = (long) ptr->cur_start_row + i; rows = MIN(rows, (long) ptr->first_undef_row - thisrow); /* Transfer no more than fits in file */ rows = MIN(rows, (long) ptr->rows_in_array - thisrow); if (rows <= 0) /* this chunk might be past end of file! */ break; byte_count = rows * bytesperrow; if (writing) (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info, (void FAR *) ptr->mem_buffer[i], file_offset, byte_count); else (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info, (void FAR *) ptr->mem_buffer[i], file_offset, byte_count); file_offset += byte_count; } } METHODDEF(JSAMPARRAY) access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable) /* Access the part of a virtual sample array starting at start_row */ /* and extending for num_rows rows. writable is true if */ /* caller intends to modify the accessed area. */ { JDIMENSION end_row = start_row + num_rows; JDIMENSION undef_row; /* debugging check */ if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess || ptr->mem_buffer == NULL) ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); /* Make the desired part of the virtual array accessible */ if (start_row < ptr->cur_start_row || end_row > ptr->cur_start_row+ptr->rows_in_mem) { if (! ptr->b_s_open) ERREXIT(cinfo, JERR_VIRTUAL_BUG); /* Flush old buffer contents if necessary */ if (ptr->dirty) { do_sarray_io(cinfo, ptr, TRUE); ptr->dirty = FALSE; } /* Decide what part of virtual array to access. * Algorithm: if target address > current window, assume forward scan, * load starting at target address. If target address < current window, * assume backward scan, load so that target area is top of window. * Note that when switching from forward write to forward read, will have * start_row = 0, so the limiting case applies and we load from 0 anyway. */ if (start_row > ptr->cur_start_row) { ptr->cur_start_row = start_row; } else { /* use long arithmetic here to avoid overflow & unsigned problems */ long ltemp; ltemp = (long) end_row - (long) ptr->rows_in_mem; if (ltemp < 0) ltemp = 0; /* don't fall off front end of file */ ptr->cur_start_row = (JDIMENSION) ltemp; } /* Read in the selected part of the array. * During the initial write pass, we will do no actual read * because the selected part is all undefined. */ do_sarray_io(cinfo, ptr, FALSE); } /* Ensure the accessed part of the array is defined; prezero if needed. * To improve locality of access, we only prezero the part of the array * that the caller is about to access, not the entire in-memory array. */ if (ptr->first_undef_row < end_row) { if (ptr->first_undef_row < start_row) { if (writable) /* writer skipped over a section of array */ ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); undef_row = start_row; /* but reader is allowed to read ahead */ } else { undef_row = ptr->first_undef_row; } if (writable) ptr->first_undef_row = end_row; if (ptr->pre_zero) { size_t bytesperrow = (size_t) ptr->samplesperrow * SIZEOF(JSAMPLE); undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */ end_row -= ptr->cur_start_row; while (undef_row < end_row) { FMEMZERO((void FAR *) ptr->mem_buffer[undef_row], bytesperrow); undef_row++; } } else { if (! writable) /* reader looking at undefined data */ ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); } } /* Flag the buffer dirty if caller will write in it */ if (writable) ptr->dirty = TRUE; /* Return address of proper part of the buffer */ return ptr->mem_buffer + (start_row - ptr->cur_start_row); } METHODDEF(JBLOCKARRAY) access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr, JDIMENSION start_row, JDIMENSION num_rows, boolean writable) /* Access the part of a virtual block array starting at start_row */ /* and extending for num_rows rows. writable is true if */ /* caller intends to modify the accessed area. */ { JDIMENSION end_row = start_row + num_rows; JDIMENSION undef_row; /* debugging check */ if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess || ptr->mem_buffer == NULL) ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); /* Make the desired part of the virtual array accessible */ if (start_row < ptr->cur_start_row || end_row > ptr->cur_start_row+ptr->rows_in_mem) { if (! ptr->b_s_open) ERREXIT(cinfo, JERR_VIRTUAL_BUG); /* Flush old buffer contents if necessary */ if (ptr->dirty) { do_barray_io(cinfo, ptr, TRUE); ptr->dirty = FALSE; } /* Decide what part of virtual array to access. * Algorithm: if target address > current window, assume forward scan, * load starting at target address. If target address < current window, * assume backward scan, load so that target area is top of window. * Note that when switching from forward write to forward read, will have * start_row = 0, so the limiting case applies and we load from 0 anyway. */ if (start_row > ptr->cur_start_row) { ptr->cur_start_row = start_row; } else { /* use long arithmetic here to avoid overflow & unsigned problems */ long ltemp; ltemp = (long) end_row - (long) ptr->rows_in_mem; if (ltemp < 0) ltemp = 0; /* don't fall off front end of file */ ptr->cur_start_row = (JDIMENSION) ltemp; } /* Read in the selected part of the array. * During the initial write pass, we will do no actual read * because the selected part is all undefined. */ do_barray_io(cinfo, ptr, FALSE); } /* Ensure the accessed part of the array is defined; prezero if needed. * To improve locality of access, we only prezero the part of the array * that the caller is about to access, not the entire in-memory array. */ if (ptr->first_undef_row < end_row) { if (ptr->first_undef_row < start_row) { if (writable) /* writer skipped over a section of array */ ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); undef_row = start_row; /* but reader is allowed to read ahead */ } else { undef_row = ptr->first_undef_row; } if (writable) ptr->first_undef_row = end_row; if (ptr->pre_zero) { size_t bytesperrow = (size_t) ptr->blocksperrow * SIZEOF(JBLOCK); undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */ end_row -= ptr->cur_start_row; while (undef_row < end_row) { FMEMZERO((void FAR *) ptr->mem_buffer[undef_row], bytesperrow); undef_row++; } } else { if (! writable) /* reader looking at undefined data */ ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); } } /* Flag the buffer dirty if caller will write in it */ if (writable) ptr->dirty = TRUE; /* Return address of proper part of the buffer */ return ptr->mem_buffer + (start_row - ptr->cur_start_row); } /* * Release all objects belonging to a specified pool. */ METHODDEF(void) free_pool (j_common_ptr cinfo, int pool_id) { my_mem_ptr mem = (my_mem_ptr) cinfo->mem; small_pool_ptr shdr_ptr; large_pool_ptr lhdr_ptr; size_t space_freed; if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS) ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ #ifdef MEM_STATS if (cinfo->err->trace_level > 1) print_mem_stats(cinfo, pool_id); /* print pool's memory usage statistics */ #endif /* If freeing IMAGE pool, close any virtual arrays first */ if (pool_id == JPOOL_IMAGE) { jvirt_sarray_ptr sptr; jvirt_barray_ptr bptr; for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) { if (sptr->b_s_open) { /* there may be no backing store */ sptr->b_s_open = FALSE; /* prevent recursive close if error */ (*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info); } } mem->virt_sarray_list = NULL; for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) { if (bptr->b_s_open) { /* there may be no backing store */ bptr->b_s_open = FALSE; /* prevent recursive close if error */ (*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info); } } mem->virt_barray_list = NULL; } /* Release large objects */ lhdr_ptr = mem->large_list[pool_id]; mem->large_list[pool_id] = NULL; while (lhdr_ptr != NULL) { large_pool_ptr next_lhdr_ptr = lhdr_ptr->hdr.next; space_freed = lhdr_ptr->hdr.bytes_used + lhdr_ptr->hdr.bytes_left + SIZEOF(large_pool_hdr); jpeg_free_large(cinfo, (void FAR *) lhdr_ptr, space_freed); mem->total_space_allocated -= space_freed; lhdr_ptr = next_lhdr_ptr; } /* Release small objects */ shdr_ptr = mem->small_list[pool_id]; mem->small_list[pool_id] = NULL; while (shdr_ptr != NULL) { small_pool_ptr next_shdr_ptr = shdr_ptr->hdr.next; space_freed = shdr_ptr->hdr.bytes_used + shdr_ptr->hdr.bytes_left + SIZEOF(small_pool_hdr); jpeg_free_small(cinfo, (void *) shdr_ptr, space_freed); mem->total_space_allocated -= space_freed; shdr_ptr = next_shdr_ptr; } } /* * Close up shop entirely. * Note that this cannot be called unless cinfo->mem is non-NULL. */ METHODDEF(void) self_destruct (j_common_ptr cinfo) { int pool; /* Close all backing store, release all memory. * Releasing pools in reverse order might help avoid fragmentation * with some (brain-damaged) malloc libraries. */ for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) { free_pool(cinfo, pool); } /* Release the memory manager control block too. */ jpeg_free_small(cinfo, (void *) cinfo->mem, SIZEOF(my_memory_mgr)); cinfo->mem = NULL; /* ensures I will be called only once */ jpeg_mem_term(cinfo); /* system-dependent cleanup */ } /* * Memory manager initialization. * When this is called, only the error manager pointer is valid in cinfo! */ GLOBAL(void) jinit_memory_mgr (j_common_ptr cinfo) { my_mem_ptr mem; long max_to_use; int pool; size_t test_mac; cinfo->mem = NULL; /* for safety if init fails */ /* Check for configuration errors. * SIZEOF(ALIGN_TYPE) should be a power of 2; otherwise, it probably * doesn't reflect any real hardware alignment requirement. * The test is a little tricky: for X>0, X and X-1 have no one-bits * in common if and only if X is a power of 2, ie has only one one-bit. * Some compilers may give an "unreachable code" warning here; ignore it. */ if ((SIZEOF(ALIGN_TYPE) & (SIZEOF(ALIGN_TYPE)-1)) != 0) ERREXIT(cinfo, JERR_BAD_ALIGN_TYPE); /* MAX_ALLOC_CHUNK must be representable as type size_t, and must be * a multiple of SIZEOF(ALIGN_TYPE). * Again, an "unreachable code" warning may be ignored here. * But a "constant too large" warning means you need to fix MAX_ALLOC_CHUNK. */ test_mac = (size_t) MAX_ALLOC_CHUNK; if ((long) test_mac != MAX_ALLOC_CHUNK || (MAX_ALLOC_CHUNK % SIZEOF(ALIGN_TYPE)) != 0) ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK); max_to_use = jpeg_mem_init(cinfo); /* system-dependent initialization */ /* Attempt to allocate memory manager's control block */ mem = (my_mem_ptr) jpeg_get_small(cinfo, SIZEOF(my_memory_mgr)); if (mem == NULL) { jpeg_mem_term(cinfo); /* system-dependent cleanup */ ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 0); } /* OK, fill in the method pointers */ mem->pub.alloc_small = alloc_small; mem->pub.alloc_large = alloc_large; mem->pub.alloc_sarray = alloc_sarray; mem->pub.alloc_barray = alloc_barray; mem->pub.request_virt_sarray = request_virt_sarray; mem->pub.request_virt_barray = request_virt_barray; mem->pub.realize_virt_arrays = realize_virt_arrays; mem->pub.access_virt_sarray = access_virt_sarray; mem->pub.access_virt_barray = access_virt_barray; mem->pub.free_pool = free_pool; mem->pub.self_destruct = self_destruct; /* Make MAX_ALLOC_CHUNK accessible to other modules */ mem->pub.max_alloc_chunk = MAX_ALLOC_CHUNK; /* Initialize working state */ mem->pub.max_memory_to_use = max_to_use; for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) { mem->small_list[pool] = NULL; mem->large_list[pool] = NULL; } mem->virt_sarray_list = NULL; mem->virt_barray_list = NULL; mem->total_space_allocated = SIZEOF(my_memory_mgr); /* Declare ourselves open for business */ cinfo->mem = & mem->pub; /* Check for an environment variable JPEGMEM; if found, override the * default max_memory setting from jpeg_mem_init. Note that the * surrounding application may again override this value. * If your system doesn't support getenv(), define NO_GETENV to disable * this feature. */ #ifndef NO_GETENV { char * memenv; if ((memenv = getenv("JPEGMEM")) != NULL) { char ch = 'x'; if (sscanf(memenv, "%ld%c", &max_to_use, &ch) > 0) { if (ch == 'm' || ch == 'M') max_to_use *= 1000L; mem->pub.max_memory_to_use = max_to_use * 1000L; } } } #endif } jpeg-8d1/jcinit.c0000644000175000017500000000417210377570240012460 0ustar billbill/* * jcinit.c * * Copyright (C) 1991-1997, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains initialization logic for the JPEG compressor. * This routine is in charge of selecting the modules to be executed and * making an initialization call to each one. * * Logically, this code belongs in jcmaster.c. It's split out because * linking this routine implies linking the entire compression library. * For a transcoding-only application, we want to be able to use jcmaster.c * without linking in the whole library. */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" /* * Master selection of compression modules. * This is done once at the start of processing an image. We determine * which modules will be used and give them appropriate initialization calls. */ GLOBAL(void) jinit_compress_master (j_compress_ptr cinfo) { /* Initialize master control (includes parameter checking/processing) */ jinit_c_master_control(cinfo, FALSE /* full compression */); /* Preprocessing */ if (! cinfo->raw_data_in) { jinit_color_converter(cinfo); jinit_downsampler(cinfo); jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */); } /* Forward DCT */ jinit_forward_dct(cinfo); /* Entropy encoding: either Huffman or arithmetic coding. */ if (cinfo->arith_code) jinit_arith_encoder(cinfo); else { jinit_huff_encoder(cinfo); } /* Need a full-image coefficient buffer in any multi-pass mode. */ jinit_c_coef_controller(cinfo, (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding)); jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */); jinit_marker_writer(cinfo); /* We can now tell the memory manager to allocate virtual arrays. */ (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); /* Write the datastream header (SOI) immediately. * Frame and scan headers are postponed till later. * This lets application insert special markers after the SOI. */ (*cinfo->marker->write_file_header) (cinfo); } jpeg-8d1/makedfil.v100000644000175000017500000000436011367232726013143 0ustar billbill {4FC737F1-C7A5-4376-A066-2A32D752A2FF} cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx {93995380-89BD-4b04-88EB-625FBE52EBFB} h;hpp;hxx;hm;inl;inc;xsd {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms Header Files Header Files Header Files Header Files Header Files Header Files Header Files Header Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files Source Files jpeg-8d1/depcomp0000755000175000017500000004755611674632476012441 0ustar billbill#! /bin/sh # depcomp - compile a program generating dependencies as side-effects scriptversion=2011-12-04.11; # UTC # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010, # 2011 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program. If not, see . # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva . case $1 in '') echo "$0: No command. Try \`$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) cat <<\EOF Usage: depcomp [--help] [--version] PROGRAM [ARGS] Run PROGRAMS ARGS to compile a file, generating dependencies as side-effects. Environment variables: depmode Dependency tracking mode. source Source file read by `PROGRAMS ARGS'. object Object file output by `PROGRAMS ARGS'. DEPDIR directory where to store dependencies. depfile Dependency file to output. tmpdepfile Temporary file to use when outputting dependencies. libtool Whether libtool is used (yes/no). Report bugs to . EOF exit $? ;; -v | --v*) echo "depcomp $scriptversion" exit $? ;; esac if test -z "$depmode" || test -z "$source" || test -z "$object"; then echo "depcomp: Variables source, object and depmode must be set" 1>&2 exit 1 fi # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po. depfile=${depfile-`echo "$object" | sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`} tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} rm -f "$tmpdepfile" # Some modes work just like other modes, but use different flags. We # parameterize here, but still list the modes in the big case below, # to make depend.m4 easier to write. Note that we *cannot* use a case # here, because this file can only contain one case statement. if test "$depmode" = hp; then # HP compiler uses -M and no extra arg. gccflag=-M depmode=gcc fi if test "$depmode" = dashXmstdout; then # This is just like dashmstdout with a different argument. dashmflag=-xM depmode=dashmstdout fi cygpath_u="cygpath -u -f -" if test "$depmode" = msvcmsys; then # This is just like msvisualcpp but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 cygpath_u='sed s,\\\\,/,g' depmode=msvisualcpp fi if test "$depmode" = msvc7msys; then # This is just like msvc7 but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 cygpath_u='sed s,\\\\,/,g' depmode=msvc7 fi case "$depmode" in gcc3) ## gcc 3 implements dependency tracking that does exactly what ## we want. Yay! Note: for some reason libtool 1.4 doesn't like ## it if -MD -MP comes after the -MF stuff. Hmm. ## Unfortunately, FreeBSD c89 acceptance of flags depends upon ## the command line argument order; so add the flags where they ## appear in depend2.am. Note that the slowdown incurred here ## affects only configure: in makefiles, %FASTDEP% shortcuts this. for arg do case $arg in -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;; *) set fnord "$@" "$arg" ;; esac shift # fnord shift # $arg done "$@" stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile" exit $stat fi mv "$tmpdepfile" "$depfile" ;; gcc) ## There are various ways to get dependency output from gcc. Here's ## why we pick this rather obscure method: ## - Don't want to use -MD because we'd like the dependencies to end ## up in a subdir. Having to rename by hand is ugly. ## (We might end up doing this anyway to support other compilers.) ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like ## -MM, not -M (despite what the docs say). ## - Using -M directly means running the compiler twice (even worse ## than renaming). if test -z "$gccflag"; then gccflag=-MD, fi "$@" -Wp,"$gccflag$tmpdepfile" stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" echo "$object : \\" > "$depfile" alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ## The second -e expression handles DOS-style file names with drive letters. sed -e 's/^[^:]*: / /' \ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile" ## This next piece of magic avoids the `deleted header file' problem. ## The problem is that when a header file which appears in a .P file ## is deleted, the dependency causes make to die (because there is ## typically no way to rebuild the header). We avoid this by adding ## dummy dependencies for each header file. Too bad gcc doesn't do ## this for us directly. tr ' ' ' ' < "$tmpdepfile" | ## Some versions of gcc put a space before the `:'. On the theory ## that the space means something, we add a space to the output as ## well. hp depmode also adds that space, but also prefixes the VPATH ## to the object. Take care to not repeat it in the output. ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \ | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; hp) # This case exists only to let depend.m4 do its work. It works by # looking at the text of this script. This case will never be run, # since it is checked for above. exit 1 ;; sgi) if test "$libtool" = yes; then "$@" "-Wp,-MDupdate,$tmpdepfile" else "$@" -MDupdate "$tmpdepfile" fi stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files echo "$object : \\" > "$depfile" # Clip off the initial element (the dependent). Don't try to be # clever and replace this with sed code, as IRIX sed won't handle # lines with more than a fixed number of characters (4096 in # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines; # the IRIX cc adds comments like `#:fec' to the end of the # dependency line. tr ' ' ' ' < "$tmpdepfile" \ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \ tr ' ' ' ' >> "$depfile" echo >> "$depfile" # The second pass generates a dummy entry for each header file. tr ' ' ' ' < "$tmpdepfile" \ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \ >> "$depfile" else # The sourcefile does not contain any dependencies, so just # store a dummy comment line, to avoid errors with the Makefile # "include basename.Plo" scheme. echo "#dummy" > "$depfile" fi rm -f "$tmpdepfile" ;; aix) # The C for AIX Compiler uses -M and outputs the dependencies # in a .u file. In older versions, this file always lives in the # current directory. Also, the AIX compiler puts `$object:' at the # start of each line; $object doesn't have directory information. # Version 6 uses the directory in both cases. dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` test "x$dir" = "x$object" && dir= base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'` if test "$libtool" = yes; then tmpdepfile1=$dir$base.u tmpdepfile2=$base.u tmpdepfile3=$dir.libs/$base.u "$@" -Wc,-M else tmpdepfile1=$dir$base.u tmpdepfile2=$dir$base.u tmpdepfile3=$dir$base.u "$@" -M fi stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" exit $stat fi for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" do test -f "$tmpdepfile" && break done if test -f "$tmpdepfile"; then # Each line is of the form `foo.o: dependent.h'. # Do two passes, one to just change these to # `$object: dependent.h' and one to simply `dependent.h:'. sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile" # That's a tab and a space in the []. sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" else # The sourcefile does not contain any dependencies, so just # store a dummy comment line, to avoid errors with the Makefile # "include basename.Plo" scheme. echo "#dummy" > "$depfile" fi rm -f "$tmpdepfile" ;; icc) # Intel's C compiler understands `-MD -MF file'. However on # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c # ICC 7.0 will fill foo.d with something like # foo.o: sub/foo.c # foo.o: sub/foo.h # which is wrong. We want: # sub/foo.o: sub/foo.c # sub/foo.o: sub/foo.h # sub/foo.c: # sub/foo.h: # ICC 7.1 will output # foo.o: sub/foo.c sub/foo.h # and will wrap long lines using \ : # foo.o: sub/foo.c ... \ # sub/foo.h ... \ # ... "$@" -MD -MF "$tmpdepfile" stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" # Each line is of the form `foo.o: dependent.h', # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'. # Do two passes, one to just change these to # `$object: dependent.h' and one to simply `dependent.h:'. sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile" # Some versions of the HPUX 10.20 sed can't process this invocation # correctly. 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This case will never be run, # since it is checked for above. exit 1 ;; none) exec "$@" ;; *) echo "Unknown depmode $depmode" 1>&2 exit 1 ;; esac exit 0 # Local Variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC" # time-stamp-end: "; # UTC" # End: jpeg-8d1/jdmerge.c0000644000175000017500000003313406073530410012606 0ustar billbill/* * jdmerge.c * * Copyright (C) 1994-1996, Thomas G. Lane. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * * This file contains code for merged upsampling/color conversion. * * This file combines functions from jdsample.c and jdcolor.c; * read those files first to understand what's going on. * * When the chroma components are to be upsampled by simple replication * (ie, box filtering), we can save some work in color conversion by * calculating all the output pixels corresponding to a pair of chroma * samples at one time. In the conversion equations * R = Y + K1 * Cr * G = Y + K2 * Cb + K3 * Cr * B = Y + K4 * Cb * only the Y term varies among the group of pixels corresponding to a pair * of chroma samples, so the rest of the terms can be calculated just once. * At typical sampling ratios, this eliminates half or three-quarters of the * multiplications needed for color conversion. * * This file currently provides implementations for the following cases: * YCbCr => RGB color conversion only. * Sampling ratios of 2h1v or 2h2v. * No scaling needed at upsample time. * Corner-aligned (non-CCIR601) sampling alignment. * Other special cases could be added, but in most applications these are * the only common cases. (For uncommon cases we fall back on the more * general code in jdsample.c and jdcolor.c.) */ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" #ifdef UPSAMPLE_MERGING_SUPPORTED /* Private subobject */ typedef struct { struct jpeg_upsampler pub; /* public fields */ /* Pointer to routine to do actual upsampling/conversion of one row group */ JMETHOD(void, upmethod, (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf)); /* Private state for YCC->RGB conversion */ int * Cr_r_tab; /* => table for Cr to R conversion */ int * Cb_b_tab; /* => table for Cb to B conversion */ INT32 * Cr_g_tab; /* => table for Cr to G conversion */ INT32 * Cb_g_tab; /* => table for Cb to G conversion */ /* For 2:1 vertical sampling, we produce two output rows at a time. * We need a "spare" row buffer to hold the second output row if the * application provides just a one-row buffer; we also use the spare * to discard the dummy last row if the image height is odd. */ JSAMPROW spare_row; boolean spare_full; /* T if spare buffer is occupied */ JDIMENSION out_row_width; /* samples per output row */ JDIMENSION rows_to_go; /* counts rows remaining in image */ } my_upsampler; typedef my_upsampler * my_upsample_ptr; #define SCALEBITS 16 /* speediest right-shift on some machines */ #define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) #define FIX(x) ((INT32) ((x) * (1L<RGB colorspace conversion. * This is taken directly from jdcolor.c; see that file for more info. */ LOCAL(void) build_ycc_rgb_table (j_decompress_ptr cinfo) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; int i; INT32 x; SHIFT_TEMPS upsample->Cr_r_tab = (int *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(int)); upsample->Cb_b_tab = (int *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(int)); upsample->Cr_g_tab = (INT32 *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(INT32)); upsample->Cb_g_tab = (INT32 *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE+1) * SIZEOF(INT32)); for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ /* Cr=>R value is nearest int to 1.40200 * x */ upsample->Cr_r_tab[i] = (int) RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); /* Cb=>B value is nearest int to 1.77200 * x */ upsample->Cb_b_tab[i] = (int) RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); /* Cr=>G value is scaled-up -0.71414 * x */ upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x; /* Cb=>G value is scaled-up -0.34414 * x */ /* We also add in ONE_HALF so that need not do it in inner loop */ upsample->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF; } } /* * Initialize for an upsampling pass. */ METHODDEF(void) start_pass_merged_upsample (j_decompress_ptr cinfo) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; /* Mark the spare buffer empty */ upsample->spare_full = FALSE; /* Initialize total-height counter for detecting bottom of image */ upsample->rows_to_go = cinfo->output_height; } /* * Control routine to do upsampling (and color conversion). * * The control routine just handles the row buffering considerations. */ METHODDEF(void) merged_2v_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) /* 2:1 vertical sampling case: may need a spare row. */ { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; JSAMPROW work_ptrs[2]; JDIMENSION num_rows; /* number of rows returned to caller */ if (upsample->spare_full) { /* If we have a spare row saved from a previous cycle, just return it. */ jcopy_sample_rows(& upsample->spare_row, 0, output_buf + *out_row_ctr, 0, 1, upsample->out_row_width); num_rows = 1; upsample->spare_full = FALSE; } else { /* Figure number of rows to return to caller. */ num_rows = 2; /* Not more than the distance to the end of the image. */ if (num_rows > upsample->rows_to_go) num_rows = upsample->rows_to_go; /* And not more than what the client can accept: */ out_rows_avail -= *out_row_ctr; if (num_rows > out_rows_avail) num_rows = out_rows_avail; /* Create output pointer array for upsampler. */ work_ptrs[0] = output_buf[*out_row_ctr]; if (num_rows > 1) { work_ptrs[1] = output_buf[*out_row_ctr + 1]; } else { work_ptrs[1] = upsample->spare_row; upsample->spare_full = TRUE; } /* Now do the upsampling. */ (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, work_ptrs); } /* Adjust counts */ *out_row_ctr += num_rows; upsample->rows_to_go -= num_rows; /* When the buffer is emptied, declare this input row group consumed */ if (! upsample->spare_full) (*in_row_group_ctr)++; } METHODDEF(void) merged_1v_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) /* 1:1 vertical sampling case: much easier, never need a spare row. */ { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; /* Just do the upsampling. */ (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, output_buf + *out_row_ctr); /* Adjust counts */ (*out_row_ctr)++; (*in_row_group_ctr)++; } /* * These are the routines invoked by the control routines to do * the actual upsampling/conversion. One row group is processed per call. * * Note: since we may be writing directly into application-supplied buffers, * we have to be honest about the output width; we can't assume the buffer * has been rounded up to an even width. */ /* * Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical. */ METHODDEF(void) h2v1_merged_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; register int y, cred, cgreen, cblue; int cb, cr; register JSAMPROW outptr; JSAMPROW inptr0, inptr1, inptr2; JDIMENSION col; /* copy these pointers into registers if possible */ register JSAMPLE * range_limit = cinfo->sample_range_limit; int * Crrtab = upsample->Cr_r_tab; int * Cbbtab = upsample->Cb_b_tab; INT32 * Crgtab = upsample->Cr_g_tab; INT32 * Cbgtab = upsample->Cb_g_tab; SHIFT_TEMPS inptr0 = input_buf[0][in_row_group_ctr]; inptr1 = input_buf[1][in_row_group_ctr]; inptr2 = input_buf[2][in_row_group_ctr]; outptr = output_buf[0]; /* Loop for each pair of output pixels */ for (col = cinfo->output_width >> 1; col > 0; col--) { /* Do the chroma part of the calculation */ cb = GETJSAMPLE(*inptr1++); cr = GETJSAMPLE(*inptr2++); cred = Crrtab[cr]; cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); cblue = Cbbtab[cb]; /* Fetch 2 Y values and emit 2 pixels */ y = GETJSAMPLE(*inptr0++); outptr[RGB_RED] = range_limit[y + cred]; outptr[RGB_GREEN] = range_limit[y + cgreen]; outptr[RGB_BLUE] = range_limit[y + cblue]; outptr += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr0++); outptr[RGB_RED] = range_limit[y + cred]; outptr[RGB_GREEN] = range_limit[y + cgreen]; outptr[RGB_BLUE] = range_limit[y + cblue]; outptr += RGB_PIXELSIZE; } /* If image width is odd, do the last output column separately */ if (cinfo->output_width & 1) { cb = GETJSAMPLE(*inptr1); cr = GETJSAMPLE(*inptr2); cred = Crrtab[cr]; cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); cblue = Cbbtab[cb]; y = GETJSAMPLE(*inptr0); outptr[RGB_RED] = range_limit[y + cred]; outptr[RGB_GREEN] = range_limit[y + cgreen]; outptr[RGB_BLUE] = range_limit[y + cblue]; } } /* * Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical. */ METHODDEF(void) h2v2_merged_upsample (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; register int y, cred, cgreen, cblue; int cb, cr; register JSAMPROW outptr0, outptr1; JSAMPROW inptr00, inptr01, inptr1, inptr2; JDIMENSION col; /* copy these pointers into registers if possible */ register JSAMPLE * range_limit = cinfo->sample_range_limit; int * Crrtab = upsample->Cr_r_tab; int * Cbbtab = upsample->Cb_b_tab; INT32 * Crgtab = upsample->Cr_g_tab; INT32 * Cbgtab = upsample->Cb_g_tab; SHIFT_TEMPS inptr00 = input_buf[0][in_row_group_ctr*2]; inptr01 = input_buf[0][in_row_group_ctr*2 + 1]; inptr1 = input_buf[1][in_row_group_ctr]; inptr2 = input_buf[2][in_row_group_ctr]; outptr0 = output_buf[0]; outptr1 = output_buf[1]; /* Loop for each group of output pixels */ for (col = cinfo->output_width >> 1; col > 0; col--) { /* Do the chroma part of the calculation */ cb = GETJSAMPLE(*inptr1++); cr = GETJSAMPLE(*inptr2++); cred = Crrtab[cr]; cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); cblue = Cbbtab[cb]; /* Fetch 4 Y values and emit 4 pixels */ y = GETJSAMPLE(*inptr00++); outptr0[RGB_RED] = range_limit[y + cred]; outptr0[RGB_GREEN] = range_limit[y + cgreen]; outptr0[RGB_BLUE] = range_limit[y + cblue]; outptr0 += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr00++); outptr0[RGB_RED] = range_limit[y + cred]; outptr0[RGB_GREEN] = range_limit[y + cgreen]; outptr0[RGB_BLUE] = range_limit[y + cblue]; outptr0 += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr01++); outptr1[RGB_RED] = range_limit[y + cred]; outptr1[RGB_GREEN] = range_limit[y + cgreen]; outptr1[RGB_BLUE] = range_limit[y + cblue]; outptr1 += RGB_PIXELSIZE; y = GETJSAMPLE(*inptr01++); outptr1[RGB_RED] = range_limit[y + cred]; outptr1[RGB_GREEN] = range_limit[y + cgreen]; outptr1[RGB_BLUE] = range_limit[y + cblue]; outptr1 += RGB_PIXELSIZE; } /* If image width is odd, do the last output column separately */ if (cinfo->output_width & 1) { cb = GETJSAMPLE(*inptr1); cr = GETJSAMPLE(*inptr2); cred = Crrtab[cr]; cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); cblue = Cbbtab[cb]; y = GETJSAMPLE(*inptr00); outptr0[RGB_RED] = range_limit[y + cred]; outptr0[RGB_GREEN] = range_limit[y + cgreen]; outptr0[RGB_BLUE] = range_limit[y + cblue]; y = GETJSAMPLE(*inptr01); outptr1[RGB_RED] = range_limit[y + cred]; outptr1[RGB_GREEN] = range_limit[y + cgreen]; outptr1[RGB_BLUE] = range_limit[y + cblue]; } } /* * Module initialization routine for merged upsampling/color conversion. * * NB: this is called under the conditions determined by use_merged_upsample() * in jdmaster.c. That routine MUST correspond to the actual capabilities * of this module; no safety checks are made here. */ GLOBAL(void) jinit_merged_upsampler (j_decompress_ptr cinfo) { my_upsample_ptr upsample; upsample = (my_upsample_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_upsampler)); cinfo->upsample = (struct jpeg_upsampler *) upsample; upsample->pub.start_pass = start_pass_merged_upsample; upsample->pub.need_context_rows = FALSE; upsample->out_row_width = cinfo->output_width * cinfo->out_color_components; if (cinfo->max_v_samp_factor == 2) { upsample->pub.upsample = merged_2v_upsample; upsample->upmethod = h2v2_merged_upsample; /* Allocate a spare row buffer */ upsample->spare_row = (JSAMPROW) (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, (size_t) (upsample->out_row_width * SIZEOF(JSAMPLE))); } else { upsample->pub.upsample = merged_1v_upsample; upsample->upmethod = h2v1_merged_upsample; /* No spare row needed */ upsample->spare_row = NULL; } build_ycc_rgb_table(cinfo); } #endif /* UPSAMPLE_MERGING_SUPPORTED */ jpeg-8d1/configure.ac0000644000175000017500000002700411674632245013326 0ustar billbill# IJG auto-configuration source file. # Process this file with autoconf to produce a configure script. # # Configure script for IJG libjpeg # AC_INIT([libjpeg], [8.4.0]) # Directory where autotools helper scripts lives. AC_CONFIG_AUX_DIR([.]) # Generate configuration headers. AC_CONFIG_HEADERS([jconfig.h:jconfig.cfg]) # Hack: disable autoheader so that it doesn't overwrite our cfg template. AUTOHEADER="echo autoheader ignored" # Check system type AC_CANONICAL_TARGET # Initialize Automake # Don't require all the GNU mandated files AM_INIT_AUTOMAKE([-Wall -Werror -Wno-obsolete ansi2knr no-dist foreign]) # Make --enable-silent-rules the default. # To get verbose build output you may configure # with --disable-silent-rules or use "make V=1". AM_SILENT_RULES([yes]) # This is required when using the de-ANSI-fication feature. AM_C_PROTOTYPES # Add configure option --enable-maintainer-mode which enables # dependency checking and generation useful to package maintainers. # This is made an option to avoid confusing end users. AM_MAINTAINER_MODE # Check for programs AC_PROG_CC AC_PROG_CC_STDC AC_PROG_CPP AC_PROG_INSTALL AC_PROG_MAKE_SET AC_PROG_LN_S # Check if LD supports linker scripts, # and define automake conditional HAVE_LD_VERSION_SCRIPT if so. AC_ARG_ENABLE([ld-version-script], AS_HELP_STRING([--enable-ld-version-script], [enable linker version script (default is enabled when possible)]), [have_ld_version_script=$enableval], []) if test -z "$have_ld_version_script"; then AC_MSG_CHECKING([if LD -Wl,--version-script works]) save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" cat > conftest.map < rather than standard .])]) # See whether type size_t is defined in any ANSI-standard places; # if not, perhaps it is defined in . AC_MSG_CHECKING([for size_t]) AC_TRY_COMPILE([ #ifdef HAVE_STDDEF_H #include #endif #ifdef HAVE_STDLIB_H #include #endif #include #ifdef NEED_BSD_STRINGS #include #else #include #endif typedef size_t my_size_t; ], [ my_size_t foovar; ], [ijg_size_t_ok=yes], [ijg_size_t_ok="not ANSI, perhaps it is in sys/types.h"]) AC_MSG_RESULT([$ijg_size_t_ok]) if test "$ijg_size_t_ok" != yes; then AC_CHECK_HEADER([sys/types.h], [AC_DEFINE([NEED_SYS_TYPES_H], [1], [Need to include in order to obtain size_t.]) AC_EGREP_CPP([size_t], [#include ], [ijg_size_t_ok="size_t is in sys/types.h"], [ijg_size_t_ok=no])], [ijg_size_t_ok=no]) AC_MSG_RESULT([$ijg_size_t_ok]) if test "$ijg_size_t_ok" = no; then AC_MSG_WARN([Type size_t is not defined in any of the usual places. Try putting '"typedef unsigned int size_t;"' in jconfig.h.]) fi fi # Check compiler characteristics AC_MSG_CHECKING([for type unsigned char]) AC_TRY_COMPILE([], [ unsigned char un_char; ], [AC_MSG_RESULT(yes) AC_DEFINE([HAVE_UNSIGNED_CHAR], [1], [Compiler supports 'unsigned char'.])], [AC_MSG_RESULT(no)]) AC_MSG_CHECKING([for type unsigned short]) AC_TRY_COMPILE([], [ unsigned short un_short; ], [AC_MSG_RESULT(yes) AC_DEFINE([HAVE_UNSIGNED_SHORT], [1], [Compiler supports 'unsigned short'.])], [AC_MSG_RESULT(no)]) AC_MSG_CHECKING([for type void]) AC_TRY_COMPILE([ /* Caution: a C++ compiler will insist on valid prototypes */ typedef void * void_ptr; /* check void * */ #ifdef HAVE_PROTOTYPES /* check ptr to function returning void */ typedef void (*void_func) (int a, int b); #else typedef void (*void_func) (); #endif #ifdef HAVE_PROTOTYPES /* check void function result */ void test3function (void_ptr arg1, void_func arg2) #else void test3function (arg1, arg2) void_ptr arg1; void_func arg2; #endif { char * locptr = (char *) arg1; /* check casting to and from void * */ arg1 = (void *) locptr; (*arg2) (1, 2); /* check call of fcn returning void */ } ], [ ], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) AC_DEFINE([void], [char], [Define 'void' as 'char' for archaic compilers that don't understand it.])]) AC_C_CONST # Check for non-broken inline under various spellings AC_MSG_CHECKING([for inline]) ijg_cv_inline="" AC_TRY_COMPILE([], [} __inline__ int foo() { return 0; } int bar() { return foo();], ijg_cv_inline="__inline__", [AC_TRY_COMPILE(, [} __inline int foo() { return 0; } int bar() { return foo();], ijg_cv_inline="__inline", [AC_TRY_COMPILE(, [} inline int foo() { return 0; } int bar() { return foo();], ijg_cv_inline="inline")])]) AC_MSG_RESULT($ijg_cv_inline) AC_DEFINE_UNQUOTED([INLINE], [$ijg_cv_inline], [How to obtain function inlining.]) # We cannot check for bogus warnings, but at least we can check for errors AC_MSG_CHECKING([for broken incomplete types]) AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ], [], [AC_MSG_RESULT(ok)], [AC_MSG_RESULT(broken) AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1], [Compiler does not support pointers to unspecified structures.])]) # Test whether global names are unique to at least 15 chars AC_MSG_CHECKING([for short external names]) AC_TRY_LINK([ int possibly_duplicate_function () { return 0; } int possibly_dupli_function () { return 1; } ], [], [AC_MSG_RESULT(ok)], [AC_MSG_RESULT(short) AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], [1], [Linker requires that global names be unique in first 15 characters.])]) # Run-time checks AC_MSG_CHECKING([to see if char is signed]) AC_TRY_RUN([ #ifdef HAVE_PROTOTYPES int is_char_signed (int arg) #else int is_char_signed (arg) int arg; #endif { if (arg == 189) { /* expected result for unsigned char */ return 0; /* type char is unsigned */ } else if (arg != -67) { /* expected result for signed char */ printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n"); printf("I fear the JPEG software will not work at all.\n\n"); } return 1; /* assume char is signed otherwise */ } char signed_char_check = (char) (-67); int main() { exit(is_char_signed((int) signed_char_check)); }], [AC_MSG_RESULT(no) AC_DEFINE([CHAR_IS_UNSIGNED], [1], [Characters are unsigned])], [AC_MSG_RESULT(yes)], [AC_MSG_WARN([Assuming that char is signed on target machine. If it is unsigned, this will be a little bit inefficient.]) ]) AC_MSG_CHECKING([to see if right shift is signed]) AC_TRY_RUN([ #ifdef HAVE_PROTOTYPES int is_shifting_signed (long arg) #else int is_shifting_signed (arg) long arg; #endif /* See whether right-shift on a long is signed or not. */ { long res = arg >> 4; if (res == -0x7F7E80CL) { /* expected result for signed shift */ return 1; /* right shift is signed */ } /* see if unsigned-shift hack will fix it. */ /* we can't just test exact value since it depends on width of long... */ res |= (~0L) << (32-4); if (res == -0x7F7E80CL) { /* expected result now? */ return 0; /* right shift is unsigned */ } printf("Right shift isn't acting as I expect it to.\n"); printf("I fear the JPEG software will not work at all.\n\n"); return 0; /* try it with unsigned anyway */ } int main() { exit(is_shifting_signed(-0x7F7E80B1L)); }], [AC_MSG_RESULT(no) AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], [1], [Broken compiler shifts signed values as an unsigned shift.])], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(Assuming that right shift is signed on target machine.)]) AC_MSG_CHECKING([to see if fopen accepts b spec]) AC_TRY_RUN([ #include int main() { if (fopen("conftestdata", "wb") != NULL) exit(0); exit(1); }], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) AC_DEFINE([DONT_USE_B_MODE], [1], [Don't open files in binary mode.])], [AC_MSG_RESULT(Assuming that it does.)]) # Configure libtool AC_LIBTOOL_WIN32_DLL AC_PROG_LIBTOOL # Select memory manager depending on user input. # If no "-enable-maxmem", use jmemnobs MEMORYMGR='jmemnobs' MAXMEM="no" AC_ARG_ENABLE([maxmem], [ --enable-maxmem[=N] enable use of temp files, set max mem usage to N MB], [MAXMEM="$enableval"]) dnl [# support --with-maxmem for backwards compatibility with IJG V5.] dnl AC_ARG_WITH(maxmem, , MAXMEM="$withval") if test "x$MAXMEM" = xyes; then MAXMEM=1 fi if test "x$MAXMEM" != xno; then if test -n "`echo $MAXMEM | sed 's/[[0-9]]//g'`"; then AC_MSG_ERROR(non-numeric argument to --enable-maxmem) fi DEFAULTMAXMEM=`expr $MAXMEM \* 1048576` AC_DEFINE_UNQUOTED([DEFAULT_MAX_MEM], [${DEFAULTMAXMEM}], [Maximum data space library will allocate.]) AC_MSG_CHECKING([for 'tmpfile()']) AC_TRY_LINK([#include ], [ FILE * tfile = tmpfile(); ], [AC_MSG_RESULT(yes) MEMORYMGR='jmemansi'], [AC_MSG_RESULT(no) dnl if tmpfile is not present, must use jmemname. MEMORYMGR='jmemname' # Test for the need to remove temporary files using a signal handler # (for cjpeg/djpeg) AC_DEFINE([NEED_SIGNAL_CATCHER], [1], [Need signal handler to clean up temporary files.]) AC_MSG_CHECKING([for 'mktemp()']) AC_TRY_LINK([], [ char fname[80]; mktemp(fname); ], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) AC_DEFINE([NO_MKTEMP], [1], [The mktemp() function is not available.])])]) fi AC_SUBST([MEMORYMGR]) # Extract the library version IDs from jpeglib.h. AC_MSG_CHECKING([libjpeg version number]) [major=`sed -ne 's/^#define JPEG_LIB_VERSION_MAJOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h` minor=`sed -ne 's/^#define JPEG_LIB_VERSION_MINOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`] AC_SUBST([JPEG_LIB_VERSION], [`expr $major + $minor`:0:$minor]) AC_MSG_RESULT([$JPEG_LIB_VERSION]) AC_CONFIG_FILES([Makefile]) AC_OUTPUT jpeg-8d1/usage.txt0000644000175000017500000007437411651771374012723 0ustar billbillUSAGE instructions for the Independent JPEG Group's JPEG software ================================================================= This file describes usage of the JPEG conversion programs cjpeg and djpeg, as well as the utility programs jpegtran, rdjpgcom and wrjpgcom. (See the other documentation files if you wish to use the JPEG library within your own programs.) If you are on a Unix machine you may prefer to read the Unix-style manual pages in files cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1. INTRODUCTION These programs implement JPEG image encoding, decoding, and transcoding. JPEG (pronounced "jay-peg") is a standardized compression method for full-color and gray-scale images. GENERAL USAGE We provide two programs, cjpeg to compress an image file into JPEG format, and djpeg to decompress a JPEG file back into a conventional image format. On Unix-like systems, you say: cjpeg [switches] [imagefile] >jpegfile or djpeg [switches] [jpegfile] >imagefile The programs read the specified input file, or standard input if none is named. They always write to standard output (with trace/error messages to standard error). These conventions are handy for piping images between programs. On most non-Unix systems, you say: cjpeg [switches] imagefile jpegfile or djpeg [switches] jpegfile imagefile i.e., both the input and output files are named on the command line. This style is a little more foolproof, and it loses no functionality if you don't have pipes. (You can get this style on Unix too, if you prefer, by defining TWO_FILE_COMMANDLINE when you compile the programs; see install.txt.) You can also say: cjpeg [switches] -outfile jpegfile imagefile or djpeg [switches] -outfile imagefile jpegfile This syntax works on all systems, so it is useful for scripts. The currently supported image file formats are: PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster Toolkit format). (RLE is supported only if the URT library is available.) cjpeg recognizes the input image format automatically, with the exception of some Targa-format files. You have to tell djpeg which format to generate. JPEG files are in the defacto standard JFIF file format. There are other, less widely used JPEG-based file formats, but we don't support them. All switch names may be abbreviated; for example, -grayscale may be written -gray or -gr. Most of the "basic" switches can be abbreviated to as little as one letter. Upper and lower case are equivalent (-BMP is the same as -bmp). British spellings are also accepted (e.g., -greyscale), though for brevity these are not mentioned below. CJPEG DETAILS The basic command line switches for cjpeg are: -quality N[,...] Scale quantization tables to adjust image quality. Quality is 0 (worst) to 100 (best); default is 75. (See below for more info.) -grayscale Create monochrome JPEG file from color input. Be sure to use this switch when compressing a grayscale BMP file, because cjpeg isn't bright enough to notice whether a BMP file uses only shades of gray. By saying -grayscale, you'll get a smaller JPEG file that takes less time to process. -rgb Create RGB JPEG file. Using this switch suppresses the conversion from RGB colorspace input to the default YCbCr JPEG colorspace. Use this switch in combination with the -block N switch (see below) for lossless JPEG coding. -optimize Perform optimization of entropy encoding parameters. Without this, default encoding parameters are used. -optimize usually makes the JPEG file a little smaller, but cjpeg runs somewhat slower and needs much more memory. Image quality and speed of decompression are unaffected by -optimize. -progressive Create progressive JPEG file (see below). -scale M/N Scale the output image by a factor M/N. Currently supported scale factors are M/N with all N from 1 to 16, where M is the destination DCT size, which is 8 by default (see -block N switch below). -targa Input file is Targa format. Targa files that contain an "identification" field will not be automatically recognized by cjpeg; for such files you must specify -targa to make cjpeg treat the input as Targa format. For most Targa files, you won't need this switch. The -quality switch lets you trade off compressed file size against quality of the reconstructed image: the higher the quality setting, the larger the JPEG file, and the closer the output image will be to the original input. Normally you want to use the lowest quality setting (smallest file) that decompresses into something visually indistinguishable from the original image. For this purpose the quality setting should be between 50 and 95; the default of 75 is often about right. If you see defects at -quality 75, then go up 5 or 10 counts at a time until you are happy with the output image. (The optimal setting will vary from one image to another.) -quality 100 will generate a quantization table of all 1's, minimizing loss in the quantization step (but there is still information loss in subsampling, as well as roundoff error). This setting is mainly of interest for experimental purposes. Quality values above about 95 are NOT recommended for normal use; the compressed file size goes up dramatically for hardly any gain in output image quality. In the other direction, quality values below 50 will produce very small files of low image quality. Settings around 5 to 10 might be useful in preparing an index of a large image library, for example. Try -quality 2 (or so) for some amusing Cubist effects. (Note: quality values below about 25 generate 2-byte quantization tables, which are considered optional in the JPEG standard. cjpeg emits a warning message when you give such a quality value, because some other JPEG programs may be unable to decode the resulting file. Use -baseline if you need to ensure compatibility at low quality values.) The -quality option has been extended in IJG version 7 for support of separate quality settings for luminance and chrominance (or in general, for every provided quantization table slot). This feature is useful for high-quality applications which cannot accept the damage of color data by coarse subsampling settings. You can now easily reduce the color data amount more smoothly with finer control without separate subsampling. The resulting file is fully compliant with standard JPEG decoders. Note that the -quality ratings refer to the quantization table slots, and that the last value is replicated if there are more q-table slots than parameters. The default q-table slots are 0 for luminance and 1 for chrominance with default tables as given in the JPEG standard. This is compatible with the old behaviour in case that only one parameter is given, which is then used for both luminance and chrominance (slots 0 and 1). More or custom quantization tables can be set with -qtables and assigned to components with -qslots parameter (see the "wizard" switches below). CAUTION: You must explicitly add -sample 1x1 for efficient separate color quality selection, since the default value used by library is 2x2! The -progressive switch creates a "progressive JPEG" file. In this type of JPEG file, the data is stored in multiple scans of increasing quality. If the file is being transmitted over a slow communications link, the decoder can use the first scan to display a low-quality image very quickly, and can then improve the display with each subsequent scan. The final image is exactly equivalent to a standard JPEG file of the same quality setting, and the total file size is about the same --- often a little smaller. Switches for advanced users: -arithmetic Use arithmetic coding. CAUTION: arithmetic coded JPEG is not yet widely implemented, so many decoders will be unable to view an arithmetic coded JPEG file at all. -block N Set DCT block size. All N from 1 to 16 are possible. Default is 8 (baseline format). Larger values produce higher compression, smaller values produce higher quality (exact DCT stage possible with 1 or 2; with the default quality of 75 and default Luminance qtable the DCT+Quantization stage is lossless for N=1). CAUTION: An implementation of the JPEG SmartScale extension is required for this feature. SmartScale enabled JPEG is not yet widely implemented, so many decoders will be unable to view a SmartScale extended JPEG file at all. -dct int Use integer DCT method (default). -dct fast Use fast integer DCT (less accurate). -dct float Use floating-point DCT method. The float method is very slightly more accurate than the int method, but is much slower unless your machine has very fast floating-point hardware. Also note that results of the floating-point method may vary slightly across machines, while the integer methods should give the same results everywhere. The fast integer method is much less accurate than the other two. -nosmooth Don't use high-quality downsampling. -restart N Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is attached to the number. -restart 0 (the default) means no restart markers. -smooth N Smooth the input image to eliminate dithering noise. N, ranging from 1 to 100, indicates the strength of smoothing. 0 (the default) means no smoothing. -maxmemory N Set limit for amount of memory to use in processing large images. Value is in thousands of bytes, or millions of bytes if "M" is attached to the number. For example, -max 4m selects 4000000 bytes. If more space is needed, temporary files will be used. -verbose Enable debug printout. More -v's give more printout. or -debug Also, version information is printed at startup. The -restart option inserts extra markers that allow a JPEG decoder to resynchronize after a transmission error. Without restart markers, any damage to a compressed file will usually ruin the image from the point of the error to the end of the image; with restart markers, the damage is usually confined to the portion of the image up to the next restart marker. Of course, the restart markers occupy extra space. We recommend -restart 1 for images that will be transmitted across unreliable networks such as Usenet. The -smooth option filters the input to eliminate fine-scale noise. This is often useful when converting dithered images to JPEG: a moderate smoothing factor of 10 to 50 gets rid of dithering patterns in the input file, resulting in a smaller JPEG file and a better-looking image. Too large a smoothing factor will visibly blur the image, however. Switches for wizards: -baseline Force baseline-compatible quantization tables to be generated. This clamps quantization values to 8 bits even at low quality settings. (This switch is poorly named, since it does not ensure that the output is actually baseline JPEG. For example, you can use -baseline and -progressive together.) -qtables file Use the quantization tables given in the specified text file. -qslots N[,...] Select which quantization table to use for each color component. -sample HxV[,...] Set JPEG sampling factors for each color component. -scans file Use the scan script given in the specified text file. The "wizard" switches are intended for experimentation with JPEG. If you don't know what you are doing, DON'T USE THEM. These switches are documented further in the file wizard.txt. DJPEG DETAILS The basic command line switches for djpeg are: -colors N Reduce image to at most N colors. This reduces the or -quantize N number of colors used in the output image, so that it can be displayed on a colormapped display or stored in a colormapped file format. For example, if you have an 8-bit display, you'd need to reduce to 256 or fewer colors. (-colors is the recommended name, -quantize is provided only for backwards compatibility.) -fast Select recommended processing options for fast, low quality output. (The default options are chosen for highest quality output.) Currently, this is equivalent to "-dct fast -nosmooth -onepass -dither ordered". -grayscale Force gray-scale output even if JPEG file is color. Useful for viewing on monochrome displays; also, djpeg runs noticeably faster in this mode. -scale M/N Scale the output image by a factor M/N. Currently supported scale factors are M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for baseline JPEG. If the /N part is omitted, then M specifies the DCT scaled size to be applied on the given input. For baseline JPEG this is equivalent to M/8 scaling, since the source DCT size for baseline JPEG is 8. Scaling is handy if the image is larger than your screen; also, djpeg runs much faster when scaling down the output. -bmp Select BMP output format (Windows flavor). 8-bit colormapped format is emitted if -colors or -grayscale is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color format is emitted. -gif Select GIF output format. Since GIF does not support more than 256 colors, -colors 256 is assumed (unless you specify a smaller number of colors). If you specify -fast, the default number of colors is 216. -os2 Select BMP output format (OS/2 1.x flavor). 8-bit colormapped format is emitted if -colors or -grayscale is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color format is emitted. -pnm Select PBMPLUS (PPM/PGM) output format (this is the default format). PGM is emitted if the JPEG file is gray-scale or if -grayscale is specified; otherwise PPM is emitted. -rle Select RLE output format. (Requires URT library.) -targa Select Targa output format. Gray-scale format is emitted if the JPEG file is gray-scale or if -grayscale is specified; otherwise, colormapped format is emitted if -colors is specified; otherwise, 24-bit full-color format is emitted. Switches for advanced users: -dct int Use integer DCT method (default). -dct fast Use fast integer DCT (less accurate). -dct float Use floating-point DCT method. The float method is very slightly more accurate than the int method, but is much slower unless your machine has very fast floating-point hardware. Also note that results of the floating-point method may vary slightly across machines, while the integer methods should give the same results everywhere. The fast integer method is much less accurate than the other two. -dither fs Use Floyd-Steinberg dithering in color quantization. -dither ordered Use ordered dithering in color quantization. -dither none Do not use dithering in color quantization. By default, Floyd-Steinberg dithering is applied when quantizing colors; this is slow but usually produces the best results. Ordered dither is a compromise between speed and quality; no dithering is fast but usually looks awful. Note that these switches have no effect unless color quantization is being done. Ordered dither is only available in -onepass mode. -map FILE Quantize to the colors used in the specified image file. This is useful for producing multiple files with identical color maps, or for forcing a predefined set of colors to be used. The FILE must be a GIF or PPM file. This option overrides -colors and -onepass. -nosmooth Don't use high-quality upsampling. -onepass Use one-pass instead of two-pass color quantization. The one-pass method is faster and needs less memory, but it produces a lower-quality image. -onepass is ignored unless you also say -colors N. Also, the one-pass method is always used for gray-scale output (the two-pass method is no improvement then). -maxmemory N Set limit for amount of memory to use in processing large images. Value is in thousands of bytes, or millions of bytes if "M" is attached to the number. For example, -max 4m selects 4000000 bytes. If more space is needed, temporary files will be used. -verbose Enable debug printout. More -v's give more printout. or -debug Also, version information is printed at startup. HINTS FOR CJPEG Color GIF files are not the ideal input for JPEG; JPEG is really intended for compressing full-color (24-bit) images. In particular, don't try to convert cartoons, line drawings, and other images that have only a few distinct colors. GIF works great on these, JPEG does not. If you want to convert a GIF to JPEG, you should experiment with cjpeg's -quality and -smooth options to get a satisfactory conversion. -smooth 10 or so is often helpful. Avoid running an image through a series of JPEG compression/decompression cycles. Image quality loss will accumulate; after ten or so cycles the image may be noticeably worse than it was after one cycle. It's best to use a lossless format while manipulating an image, then convert to JPEG format when you are ready to file the image away. The -optimize option to cjpeg is worth using when you are making a "final" version for posting or archiving. It's also a win when you are using low quality settings to make very small JPEG files; the percentage improvement is often a lot more than it is on larger files. (At present, -optimize mode is always selected when generating progressive JPEG files.) GIF input files are no longer supported, to avoid the Unisys LZW patent. (Conversion of GIF files to JPEG is usually a bad idea anyway.) HINTS FOR DJPEG To get a quick preview of an image, use the -grayscale and/or -scale switches. "-grayscale -scale 1/8" is the fastest case. Several options are available that trade off image quality to gain speed. "-fast" turns on the recommended settings. "-dct fast" and/or "-nosmooth" gain speed at a small sacrifice in quality. When producing a color-quantized image, "-onepass -dither ordered" is fast but much lower quality than the default behavior. "-dither none" may give acceptable results in two-pass mode, but is seldom tolerable in one-pass mode. If you are fortunate enough to have very fast floating point hardware, "-dct float" may be even faster than "-dct fast". But on most machines "-dct float" is slower than "-dct int"; in this case it is not worth using, because its theoretical accuracy advantage is too small to be significant in practice. Two-pass color quantization requires a good deal of memory; on MS-DOS machines it may run out of memory even with -maxmemory 0. In that case you can still decompress, with some loss of image quality, by specifying -onepass for one-pass quantization. To avoid the Unisys LZW patent, djpeg produces uncompressed GIF files. These are larger than they should be, but are readable by standard GIF decoders. HINTS FOR BOTH PROGRAMS If more space is needed than will fit in the available main memory (as determined by -maxmemory), temporary files will be used. (MS-DOS versions will try to get extended or expanded memory first.) The temporary files are often rather large: in typical cases they occupy three bytes per pixel, for example 3*800*600 = 1.44Mb for an 800x600 image. If you don't have enough free disk space, leave out -progressive and -optimize (for cjpeg) or specify -onepass (for djpeg). On MS-DOS, the temporary files are created in the directory named by the TMP or TEMP environment variable, or in the current directory if neither of those exist. Amiga implementations put the temp files in the directory named by JPEGTMP:, so be sure to assign JPEGTMP: to a disk partition with adequate free space. The default memory usage limit (-maxmemory) is set when the software is compiled. If you get an "insufficient memory" error, try specifying a smaller -maxmemory value, even -maxmemory 0 to use the absolute minimum space. You may want to recompile with a smaller default value if this happens often. On machines that have "environment" variables, you can define the environment variable JPEGMEM to set the default memory limit. The value is specified as described for the -maxmemory switch. JPEGMEM overrides the default value specified when the program was compiled, and itself is overridden by an explicit -maxmemory switch. On MS-DOS machines, -maxmemory is the amount of main (conventional) memory to use. (Extended or expanded memory is also used if available.) Most DOS-specific versions of this software do their own memory space estimation and do not need you to specify -maxmemory. JPEGTRAN jpegtran performs various useful transformations of JPEG files. It can translate the coded representation from one variant of JPEG to another, for example from baseline JPEG to progressive JPEG or vice versa. It can also perform some rearrangements of the image data, for example turning an image from landscape to portrait format by rotation. jpegtran works by rearranging the compressed data (DCT coefficients), without ever fully decoding the image. Therefore, its transformations are lossless: there is no image degradation at all, which would not be true if you used djpeg followed by cjpeg to accomplish the same conversion. But by the same token, jpegtran cannot perform lossy operations such as changing the image quality. jpegtran uses a command line syntax similar to cjpeg or djpeg. On Unix-like systems, you say: jpegtran [switches] [inputfile] >outputfile On most non-Unix systems, you say: jpegtran [switches] inputfile outputfile where both the input and output files are JPEG files. To specify the coded JPEG representation used in the output file, jpegtran accepts a subset of the switches recognized by cjpeg: -optimize Perform optimization of entropy encoding parameters. -progressive Create progressive JPEG file. -arithmetic Use arithmetic coding. -restart N Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is attached to the number. -scans file Use the scan script given in the specified text file. See the previous discussion of cjpeg for more details about these switches. If you specify none of these switches, you get a plain baseline-JPEG output file. The quality setting and so forth are determined by the input file. The image can be losslessly transformed by giving one of these switches: -flip horizontal Mirror image horizontally (left-right). -flip vertical Mirror image vertically (top-bottom). -rotate 90 Rotate image 90 degrees clockwise. -rotate 180 Rotate image 180 degrees. -rotate 270 Rotate image 270 degrees clockwise (or 90 ccw). -transpose Transpose image (across UL-to-LR axis). -transverse Transverse transpose (across UR-to-LL axis). The transpose transformation has no restrictions regarding image dimensions. The other transformations operate rather oddly if the image dimensions are not a multiple of the iMCU size (usually 8 or 16 pixels), because they can only transform complete blocks of DCT coefficient data in the desired way. jpegtran's default behavior when transforming an odd-size image is designed to preserve exact reversibility and mathematical consistency of the transformation set. As stated, transpose is able to flip the entire image area. Horizontal mirroring leaves any partial iMCU column at the right edge untouched, but is able to flip all rows of the image. Similarly, vertical mirroring leaves any partial iMCU row at the bottom edge untouched, but is able to flip all columns. The other transforms can be built up as sequences of transpose and flip operations; for consistency, their actions on edge pixels are defined to be the same as the end result of the corresponding transpose-and-flip sequence. For practical use, you may prefer to discard any untransformable edge pixels rather than having a strange-looking strip along the right and/or bottom edges of a transformed image. To do this, add the -trim switch: -trim Drop non-transformable edge blocks. Obviously, a transformation with -trim is not reversible, so strictly speaking jpegtran with this switch is not lossless. Also, the expected mathematical equivalences between the transformations no longer hold. For example, "-rot 270 -trim" trims only the bottom edge, but "-rot 90 -trim" followed by "-rot 180 -trim" trims both edges. If you are only interested in perfect transformation, add the -perfect switch: -perfect Fails with an error if the transformation is not perfect. For example you may want to do jpegtran -rot 90 -perfect foo.jpg || djpeg foo.jpg | pnmflip -r90 | cjpeg to do a perfect rotation if available or an approximated one if not. We also offer a lossless-crop option, which discards data outside a given image region but losslessly preserves what is inside. Like the rotate and flip transforms, lossless crop is restricted by the current JPEG format: the upper left corner of the selected region must fall on an iMCU boundary. If this does not hold for the given crop parameters, we silently move the upper left corner up and/or left to make it so, simultaneously increasing the region dimensions to keep the lower right crop corner unchanged. (Thus, the output image covers at least the requested region, but may cover more.) The image can be losslessly cropped by giving the switch: -crop WxH+X+Y Crop to a rectangular subarea of width W, height H starting at point X,Y. Other not-strictly-lossless transformation switches are: -grayscale Force grayscale output. This option discards the chrominance channels if the input image is YCbCr (ie, a standard color JPEG), resulting in a grayscale JPEG file. The luminance channel is preserved exactly, so this is a better method of reducing to grayscale than decompression, conversion, and recompression. This switch is particularly handy for fixing a monochrome picture that was mistakenly encoded as a color JPEG. (In such a case, the space savings from getting rid of the near-empty chroma channels won't be large; but the decoding time for a grayscale JPEG is substantially less than that for a color JPEG.) -scale M/N Scale the output image by a factor M/N. Currently supported scale factors are M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for baseline JPEG. If the /N part is omitted, then M specifies the DCT scaled size to be applied on the given input. For baseline JPEG this is equivalent to M/8 scaling, since the source DCT size for baseline JPEG is 8. CAUTION: An implementation of the JPEG SmartScale extension is required for this feature. SmartScale enabled JPEG is not yet widely implemented, so many decoders will be unable to view a SmartScale extended JPEG file at all. jpegtran also recognizes these switches that control what to do with "extra" markers, such as comment blocks: -copy none Copy no extra markers from source file. This setting suppresses all comments and other excess baggage present in the source file. -copy comments Copy only comment markers. This setting copies comments from the source file, but discards any other inessential (for image display) data. -copy all Copy all extra markers. This setting preserves miscellaneous markers found in the source file, such as JFIF thumbnails, Exif data, and Photoshop settings. In some files these extra markers can be sizable. The default behavior is -copy comments. (Note: in IJG releases v6 and v6a, jpegtran always did the equivalent of -copy none.) Additional switches recognized by jpegtran are: -outfile filename -maxmemory N -verbose -debug These work the same as in cjpeg or djpeg. THE COMMENT UTILITIES The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. Although the standard doesn't actually define what COM blocks are for, they are widely used to hold user-supplied text strings. This lets you add annotations, titles, index terms, etc to your JPEG files, and later retrieve them as text. COM blocks do not interfere with the image stored in the JPEG file. The maximum size of a COM block is 64K, but you can have as many of them as you like in one JPEG file. We provide two utility programs to display COM block contents and add COM blocks to a JPEG file. rdjpgcom searches a JPEG file and prints the contents of any COM blocks on standard output. The command line syntax is rdjpgcom [-raw] [-verbose] [inputfilename] The switch "-raw" (or just "-r") causes rdjpgcom to also output non-printable characters in comments, which are normally escaped for security reasons. The switch "-verbose" (or just "-v") causes rdjpgcom to also display the JPEG image dimensions. If you omit the input file name from the command line, the JPEG file is read from standard input. (This may not work on some operating systems, if binary data can't be read from stdin.) wrjpgcom adds a COM block, containing text you provide, to a JPEG file. Ordinarily, the COM block is added after any existing COM blocks, but you can delete the old COM blocks if you wish. wrjpgcom produces a new JPEG file; it does not modify the input file. DO NOT try to overwrite the input file by directing wrjpgcom's output back into it; on most systems this will just destroy your file. The command line syntax for wrjpgcom is similar to cjpeg's. On Unix-like systems, it is wrjpgcom [switches] [inputfilename] The output file is written to standard output. The input file comes from the named file, or from standard input if no input file is named. On most non-Unix systems, the syntax is wrjpgcom [switches] inputfilename outputfilename where both input and output file names must be given explicitly. wrjpgcom understands three switches: -replace Delete any existing COM blocks from the file. -comment "Comment text" Supply new COM text on command line. -cfile name Read text for new COM block from named file. (Switch names can be abbreviated.) If you have only one line of comment text to add, you can provide it on the command line with -comment. The comment text must be surrounded with quotes so that it is treated as a single argument. Longer comments can be read from a text file. If you give neither -comment nor -cfile, then wrjpgcom will read the comment text from standard input. (In this case an input image file name MUST be supplied, so that the source JPEG file comes from somewhere else.) You can enter multiple lines, up to 64KB worth. Type an end-of-file indicator (usually control-D or control-Z) to terminate the comment text entry. wrjpgcom will not add a COM block if the provided comment string is empty. Therefore -replace -comment "" can be used to delete all COM blocks from a file. These utility programs do not depend on the IJG JPEG library. In particular, the source code for rdjpgcom is intended as an illustration of the minimum amount of code required to parse a JPEG file header correctly. jpeg-8d1/makefile.sas0000644000175000017500000003134411367317526013330 0ustar billbill# Makefile for Independent JPEG Group's software # This makefile is for Amiga systems using SAS C 6.0 and up. # Thanks to Ed Hanway, Mark Rinfret, and Jim Zepeda. # Read installation instructions before saying "make" !! # The name of your C compiler: CC= sc # You may need to adjust these cc options: # Uncomment the following lines for generic 680x0 version ARCHFLAGS= cpu=any SUFFIX= # Uncomment the following lines for 68030-only version #ARCHFLAGS= cpu=68030 #SUFFIX=.030 CFLAGS= nostackcheck data=near parms=register optimize $(ARCHFLAGS) \ ignore=104 ignore=304 ignore=306 # ignore=104 disables warnings for mismatched const qualifiers # ignore=304 disables warnings for variables being optimized out # ignore=306 disables warnings for the inlining of functions # Generally, we recommend defining any configuration symbols in jconfig.h, # NOT via define switches here. # Link-time cc options: LDFLAGS= SC SD ND BATCH # To link any special libraries, add the necessary commands here. LDLIBS= LIB:scm.lib LIB:sc.lib # Put here the object file name for the correct system-dependent memory # manager file. For Amiga we recommend jmemname.o. SYSDEPMEM= jmemname.o # miscellaneous OS-dependent stuff # linker LN= slink # file deletion command RM= delete quiet # library (.lib) file creation command AR= oml # End of configurable options. # source files: JPEG library proper LIBSOURCES= jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \ jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \ jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \ jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \ jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \ jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \ jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \ jquant2.c jutils.c jmemmgr.c # memmgr back ends: compile only one of these into a working library SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c # source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) # files included by source files INCLUDES= jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h jpegint.h \ jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h # documentation, test, and support files DOCS= README install.txt usage.txt cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ wrjpgcom.1 wizard.txt example.c libjpeg.txt structure.txt \ coderules.txt filelist.txt change.log MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \ makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \ makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \ makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \ maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \ makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \ makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \ makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \ makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \ makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \ makefile.mms makefile.vms makvms.opt CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ jconfig.vms CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp missing OTHERFILES= jconfig.txt ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm \ libjpeg.map TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ testimgp.jpg DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) # library object files common to compression and decompression COMOBJECTS= jaricom.o jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) # compression library object files CLIBOBJECTS= jcapimin.o jcapistd.o jcarith.o jctrans.o jcparam.o \ jdatadst.o jcinit.o jcmaster.o jcmarker.o jcmainct.o jcprepct.o \ jccoefct.o jccolor.o jcsample.o jchuff.o jcdctmgr.o jfdctfst.o \ jfdctflt.o jfdctint.o # decompression library object files DLIBOBJECTS= jdapimin.o jdapistd.o jdarith.o jdtrans.o jdatasrc.o \ jdmaster.o jdinput.o jdmarker.o jdhuff.o jdmainct.o \ jdcoefct.o jdpostct.o jddctmgr.o jidctfst.o jidctflt.o \ jidctint.o jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o # These objectfiles are included in libjpeg.lib LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) # object files for sample applications (excluding library files) COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ cdjpeg.o DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ cdjpeg.o TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o all: libjpeg.lib cjpeg$(SUFFIX) djpeg$(SUFFIX) jpegtran$(SUFFIX) rdjpgcom$(SUFFIX) wrjpgcom$(SUFFIX) # note: do several AR steps to avoid command line length limitations libjpeg.lib: $(LIBOBJECTS) -$(RM) libjpeg.lib $(AR) libjpeg.lib r $(CLIBOBJECTS) $(AR) libjpeg.lib r $(DLIBOBJECTS) $(AR) libjpeg.lib r $(COMOBJECTS) cjpeg$(SUFFIX): $(COBJECTS) libjpeg.lib $(LN)