584 lines
18 KiB
C
584 lines
18 KiB
C
/*
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* Copyright (c) 1988-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include "libport.h"
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#include "tif_config.h"
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "tiffio.h"
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#include "tiffiop.h"
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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#endif
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#ifndef EXIT_FAILURE
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#define EXIT_FAILURE 1
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#endif
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/* x% weighting -> fraction of full color */
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#define PCT(x) (((x)*256 + 50) / 100)
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int RED = PCT(30); /* 30% */
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int GREEN = PCT(59); /* 59% */
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int BLUE = PCT(11); /* 11% */
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static void usage(int code);
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static int processCompressOptions(char *);
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static void compresscontig(unsigned char *out, unsigned char *rgb, uint32_t n)
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{
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register int v, red = RED, green = GREEN, blue = BLUE;
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while (n-- > 0)
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{
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v = red * (*rgb++);
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v += green * (*rgb++);
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v += blue * (*rgb++);
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*out++ = v >> 8;
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}
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}
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static void compresssep(unsigned char *out, unsigned char *r, unsigned char *g,
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unsigned char *b, uint32_t n)
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{
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register uint32_t red = RED, green = GREEN, blue = BLUE;
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while (n-- > 0)
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*out++ =
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(unsigned char)((red * (*r++) + green * (*g++) + blue * (*b++)) >>
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8);
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}
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static int checkcmap(TIFF *tif, int n, uint16_t *r, uint16_t *g, uint16_t *b)
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{
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while (n-- > 0)
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if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
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return (16);
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TIFFWarning(TIFFFileName(tif), "Assuming 8-bit colormap");
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return (8);
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}
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static void compresspalette(unsigned char *out, unsigned char *data, uint32_t n,
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uint16_t *rmap, uint16_t *gmap, uint16_t *bmap)
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{
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register int v, red = RED, green = GREEN, blue = BLUE;
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while (n-- > 0)
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{
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unsigned int ix = *data++;
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v = red * rmap[ix];
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v += green * gmap[ix];
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v += blue * bmap[ix];
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*out++ = v >> 8;
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}
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}
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static uint16_t compression = (uint16_t)-1;
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static uint16_t predictor = 0;
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static int jpegcolormode = JPEGCOLORMODE_RGB;
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static int quality = 75; /* JPEG quality */
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static void cpTags(TIFF *in, TIFF *out);
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int main(int argc, char *argv[])
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{
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uint32_t rowsperstrip = (uint32_t)-1;
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TIFF *in, *out;
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uint32_t w, h;
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uint16_t samplesperpixel;
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uint16_t bitspersample;
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uint16_t config;
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uint16_t photometric;
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uint16_t *red;
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uint16_t *green;
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uint16_t *blue;
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tsize_t rowsize;
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register uint32_t row;
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register tsample_t s;
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unsigned char *inbuf, *outbuf;
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char thing[1024];
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int c;
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#if !HAVE_DECL_OPTARG
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extern int optind;
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extern char *optarg;
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#endif
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in = (TIFF *)NULL;
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out = (TIFF *)NULL;
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inbuf = (unsigned char *)NULL;
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outbuf = (unsigned char *)NULL;
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while ((c = getopt(argc, argv, "c:r:R:G:B:h")) != -1)
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switch (c)
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{
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case 'c': /* compression scheme */
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if (!processCompressOptions(optarg))
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usage(EXIT_FAILURE);
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break;
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case 'r': /* rows/strip */
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rowsperstrip = atoi(optarg);
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break;
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case 'R':
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RED = PCT(atoi(optarg));
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break;
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case 'G':
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GREEN = PCT(atoi(optarg));
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break;
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case 'B':
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BLUE = PCT(atoi(optarg));
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break;
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case 'h':
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usage(EXIT_SUCCESS);
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/*NOTREACHED*/
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break;
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case '?':
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usage(EXIT_FAILURE);
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/*NOTREACHED*/
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break;
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}
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if (argc - optind < 2)
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usage(EXIT_FAILURE);
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in = TIFFOpen(argv[optind], "r");
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if (in == NULL)
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return (EXIT_FAILURE);
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photometric = 0;
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TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &photometric);
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if (photometric != PHOTOMETRIC_RGB && photometric != PHOTOMETRIC_PALETTE)
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{
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fprintf(
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stderr,
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"%s: Bad photometric; can only handle RGB and Palette images.\n",
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argv[optind]);
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goto tiff2bw_error;
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}
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TIFFGetField(in, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
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if (samplesperpixel != 1 && samplesperpixel != 3)
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{
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fprintf(stderr, "%s: Bad samples/pixel %u.\n", argv[optind],
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samplesperpixel);
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goto tiff2bw_error;
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}
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if (photometric == PHOTOMETRIC_RGB && samplesperpixel != 3)
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{
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fprintf(stderr, "%s: Bad samples/pixel %u for PHOTOMETRIC_RGB.\n",
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argv[optind], samplesperpixel);
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goto tiff2bw_error;
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}
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TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
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if (bitspersample != 8)
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{
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fprintf(stderr, " %s: Sorry, only handle 8-bit samples.\n",
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argv[optind]);
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goto tiff2bw_error;
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}
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TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &w);
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TIFFGetField(in, TIFFTAG_IMAGELENGTH, &h);
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TIFFGetField(in, TIFFTAG_PLANARCONFIG, &config);
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out = TIFFOpen(argv[optind + 1], "w");
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if (out == NULL)
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{
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goto tiff2bw_error;
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}
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TIFFSetField(out, TIFFTAG_IMAGEWIDTH, w);
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TIFFSetField(out, TIFFTAG_IMAGELENGTH, h);
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TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
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TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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cpTags(in, out);
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if (compression != (uint16_t)-1)
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{
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TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
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switch (compression)
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{
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case COMPRESSION_JPEG:
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TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
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TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
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break;
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case COMPRESSION_LZW:
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case COMPRESSION_ADOBE_DEFLATE:
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case COMPRESSION_DEFLATE:
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if (predictor != 0)
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TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
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break;
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}
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}
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TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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snprintf(thing, sizeof(thing), "B&W version of %s", argv[optind]);
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TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
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TIFFSetField(out, TIFFTAG_SOFTWARE, "tiff2bw");
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outbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
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if (!outbuf)
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{
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fprintf(stderr, "Out of memory\n");
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goto tiff2bw_error;
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}
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TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
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TIFFDefaultStripSize(out, rowsperstrip));
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#define pack(a, b) ((a) << 8 | (b))
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switch (pack(photometric, config))
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{
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case pack(PHOTOMETRIC_PALETTE, PLANARCONFIG_CONTIG):
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case pack(PHOTOMETRIC_PALETTE, PLANARCONFIG_SEPARATE):
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TIFFGetField(in, TIFFTAG_COLORMAP, &red, &green, &blue);
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/*
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* Convert 16-bit colormap to 8-bit (unless it looks
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* like an old-style 8-bit colormap).
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*/
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if (checkcmap(in, 1 << bitspersample, red, green, blue) == 16)
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{
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int i;
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#define CVT(x) (((x)*255L) / ((1L << 16) - 1))
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for (i = (1 << bitspersample) - 1; i >= 0; i--)
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{
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red[i] = CVT(red[i]);
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green[i] = CVT(green[i]);
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blue[i] = CVT(blue[i]);
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}
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#undef CVT
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}
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inbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
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if (!inbuf)
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{
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fprintf(stderr, "Out of memory\n");
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goto tiff2bw_error;
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}
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for (row = 0; row < h; row++)
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{
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if (TIFFReadScanline(in, inbuf, row, 0) < 0)
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break;
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compresspalette(outbuf, inbuf, w, red, green, blue);
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if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
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break;
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}
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break;
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case pack(PHOTOMETRIC_RGB, PLANARCONFIG_CONTIG):
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inbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
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if (!inbuf)
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{
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fprintf(stderr, "Out of memory\n");
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goto tiff2bw_error;
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}
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for (row = 0; row < h; row++)
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{
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if (TIFFReadScanline(in, inbuf, row, 0) < 0)
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break;
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compresscontig(outbuf, inbuf, w);
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if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
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break;
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}
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break;
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case pack(PHOTOMETRIC_RGB, PLANARCONFIG_SEPARATE):
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{
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tmsize_t inbufsize;
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rowsize = TIFFScanlineSize(in);
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inbufsize = TIFFSafeMultiply(tmsize_t, 3, rowsize);
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inbuf = (unsigned char *)_TIFFmalloc(inbufsize);
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if (!inbuf)
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{
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fprintf(stderr, "Out of memory\n");
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goto tiff2bw_error;
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}
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for (row = 0; row < h; row++)
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{
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for (s = 0; s < 3; s++)
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if (TIFFReadScanline(in, inbuf + s * rowsize, row, s) < 0)
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goto tiff2bw_error;
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compresssep(outbuf, inbuf, inbuf + rowsize, inbuf + 2 * rowsize,
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w);
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if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
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break;
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}
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break;
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}
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}
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#undef pack
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if (inbuf)
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_TIFFfree(inbuf);
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if (outbuf)
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_TIFFfree(outbuf);
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TIFFClose(in);
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TIFFClose(out);
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return (EXIT_SUCCESS);
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tiff2bw_error:
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if (inbuf)
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_TIFFfree(inbuf);
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if (outbuf)
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_TIFFfree(outbuf);
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if (out)
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TIFFClose(out);
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if (in)
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TIFFClose(in);
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return (EXIT_FAILURE);
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}
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static int processCompressOptions(char *opt)
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{
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if (streq(opt, "none"))
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compression = COMPRESSION_NONE;
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else if (streq(opt, "packbits"))
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compression = COMPRESSION_PACKBITS;
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else if (strneq(opt, "jpeg", 4))
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{
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char *cp = strchr(opt, ':');
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compression = COMPRESSION_JPEG;
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while (cp)
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{
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if (isdigit((int)cp[1]))
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quality = atoi(cp + 1);
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else if (cp[1] == 'r')
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jpegcolormode = JPEGCOLORMODE_RAW;
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else
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usage(EXIT_FAILURE);
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cp = strchr(cp + 1, ':');
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}
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}
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else if (strneq(opt, "lzw", 3))
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{
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char *cp = strchr(opt, ':');
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if (cp)
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predictor = atoi(cp + 1);
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compression = COMPRESSION_LZW;
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}
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else if (strneq(opt, "zip", 3))
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{
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char *cp = strchr(opt, ':');
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if (cp)
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predictor = atoi(cp + 1);
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compression = COMPRESSION_ADOBE_DEFLATE;
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}
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else
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return (0);
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return (1);
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}
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#define CopyField(tag, v) \
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if (TIFFGetField(in, tag, &v)) \
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TIFFSetField(out, tag, v)
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#define CopyField2(tag, v1, v2) \
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if (TIFFGetField(in, tag, &v1, &v2)) \
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TIFFSetField(out, tag, v1, v2)
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#define CopyField3(tag, v1, v2, v3) \
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if (TIFFGetField(in, tag, &v1, &v2, &v3)) \
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TIFFSetField(out, tag, v1, v2, v3)
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#define CopyField4(tag, v1, v2, v3, v4) \
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if (TIFFGetField(in, tag, &v1, &v2, &v3, &v4)) \
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TIFFSetField(out, tag, v1, v2, v3, v4)
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static void cpTag(TIFF *in, TIFF *out, uint16_t tag, uint16_t count,
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TIFFDataType type)
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{
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switch (type)
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{
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case TIFF_SHORT:
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if (count == 1)
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{
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uint16_t shortv;
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CopyField(tag, shortv);
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}
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else if (count == 2)
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{
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uint16_t shortv1, shortv2;
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CopyField2(tag, shortv1, shortv2);
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}
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else if (count == 4)
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{
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uint16_t *tr, *tg, *tb, *ta;
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CopyField4(tag, tr, tg, tb, ta);
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}
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else if (count == (uint16_t)-1)
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{
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uint16_t shortv1;
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uint16_t *shortav;
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CopyField2(tag, shortv1, shortav);
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}
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break;
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case TIFF_LONG:
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{
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uint32_t longv;
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CopyField(tag, longv);
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}
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break;
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case TIFF_RATIONAL:
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if (count == 1)
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{
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float floatv;
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CopyField(tag, floatv);
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}
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else if (count == (uint16_t)-1)
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{
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float *floatav;
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CopyField(tag, floatav);
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}
|
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break;
|
|
case TIFF_ASCII:
|
|
{
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char *stringv;
|
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CopyField(tag, stringv);
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}
|
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break;
|
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case TIFF_DOUBLE:
|
|
if (count == 1)
|
|
{
|
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double doublev;
|
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CopyField(tag, doublev);
|
|
}
|
|
else if (count == (uint16_t)-1)
|
|
{
|
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double *doubleav;
|
|
CopyField(tag, doubleav);
|
|
}
|
|
break;
|
|
default:
|
|
TIFFError(TIFFFileName(in),
|
|
"Data type %d is not supported, tag %d skipped.", tag,
|
|
type);
|
|
}
|
|
}
|
|
|
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#undef CopyField4
|
|
#undef CopyField3
|
|
#undef CopyField2
|
|
#undef CopyField
|
|
|
|
static const struct cpTag
|
|
{
|
|
uint16_t tag;
|
|
uint16_t count;
|
|
TIFFDataType type;
|
|
} tags[] = {
|
|
{TIFFTAG_SUBFILETYPE, 1, TIFF_LONG},
|
|
{TIFFTAG_THRESHHOLDING, 1, TIFF_SHORT},
|
|
{TIFFTAG_DOCUMENTNAME, 1, TIFF_ASCII},
|
|
{TIFFTAG_IMAGEDESCRIPTION, 1, TIFF_ASCII},
|
|
{TIFFTAG_MAKE, 1, TIFF_ASCII},
|
|
{TIFFTAG_MODEL, 1, TIFF_ASCII},
|
|
{TIFFTAG_MINSAMPLEVALUE, 1, TIFF_SHORT},
|
|
{TIFFTAG_MAXSAMPLEVALUE, 1, TIFF_SHORT},
|
|
{TIFFTAG_XRESOLUTION, 1, TIFF_RATIONAL},
|
|
{TIFFTAG_YRESOLUTION, 1, TIFF_RATIONAL},
|
|
{TIFFTAG_PAGENAME, 1, TIFF_ASCII},
|
|
{TIFFTAG_XPOSITION, 1, TIFF_RATIONAL},
|
|
{TIFFTAG_YPOSITION, 1, TIFF_RATIONAL},
|
|
{TIFFTAG_RESOLUTIONUNIT, 1, TIFF_SHORT},
|
|
{TIFFTAG_SOFTWARE, 1, TIFF_ASCII},
|
|
{TIFFTAG_DATETIME, 1, TIFF_ASCII},
|
|
{TIFFTAG_ARTIST, 1, TIFF_ASCII},
|
|
{TIFFTAG_HOSTCOMPUTER, 1, TIFF_ASCII},
|
|
{TIFFTAG_WHITEPOINT, 2, TIFF_RATIONAL},
|
|
{TIFFTAG_PRIMARYCHROMATICITIES, (uint16_t)-1, TIFF_RATIONAL},
|
|
{TIFFTAG_HALFTONEHINTS, 2, TIFF_SHORT},
|
|
{TIFFTAG_INKSET, 1, TIFF_SHORT},
|
|
{TIFFTAG_DOTRANGE, 2, TIFF_SHORT},
|
|
{TIFFTAG_TARGETPRINTER, 1, TIFF_ASCII},
|
|
{TIFFTAG_SAMPLEFORMAT, 1, TIFF_SHORT},
|
|
{TIFFTAG_YCBCRCOEFFICIENTS, (uint16_t)-1, TIFF_RATIONAL},
|
|
{TIFFTAG_YCBCRSUBSAMPLING, 2, TIFF_SHORT},
|
|
{TIFFTAG_YCBCRPOSITIONING, 1, TIFF_SHORT},
|
|
{TIFFTAG_REFERENCEBLACKWHITE, (uint16_t)-1, TIFF_RATIONAL},
|
|
{TIFFTAG_EXTRASAMPLES, (uint16_t)-1, TIFF_SHORT},
|
|
{TIFFTAG_SMINSAMPLEVALUE, 1, TIFF_DOUBLE},
|
|
{TIFFTAG_SMAXSAMPLEVALUE, 1, TIFF_DOUBLE},
|
|
{TIFFTAG_STONITS, 1, TIFF_DOUBLE},
|
|
};
|
|
#define NTAGS (sizeof(tags) / sizeof(tags[0]))
|
|
|
|
static void cpTags(TIFF *in, TIFF *out)
|
|
{
|
|
const struct cpTag *p;
|
|
for (p = tags; p < &tags[NTAGS]; p++)
|
|
{
|
|
if (p->tag == TIFFTAG_GROUP3OPTIONS)
|
|
{
|
|
uint16_t compression;
|
|
if (!TIFFGetField(in, TIFFTAG_COMPRESSION, &compression) ||
|
|
compression != COMPRESSION_CCITTFAX3)
|
|
continue;
|
|
}
|
|
if (p->tag == TIFFTAG_GROUP4OPTIONS)
|
|
{
|
|
uint16_t compression;
|
|
if (!TIFFGetField(in, TIFFTAG_COMPRESSION, &compression) ||
|
|
compression != COMPRESSION_CCITTFAX4)
|
|
continue;
|
|
}
|
|
cpTag(in, out, p->tag, p->count, p->type);
|
|
}
|
|
}
|
|
#undef NTAGS
|
|
|
|
static const char usage_info[] =
|
|
"Convert a color TIFF image to greyscale\n\n"
|
|
"usage: tiff2bw [options] input.tif output.tif\n"
|
|
"where options are:\n"
|
|
" -R % use #% from red channel\n"
|
|
" -G % use #% from green channel\n"
|
|
" -B % use #% from blue channel\n"
|
|
"\n"
|
|
" -r # make each strip have no more than # rows\n"
|
|
"\n"
|
|
#ifdef LZW_SUPPORT
|
|
" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding\n"
|
|
/* " LZW options:\n" */
|
|
" # set predictor value\n"
|
|
" For example, -c lzw:2 for LZW-encoded data with horizontal "
|
|
"differencing\n"
|
|
#endif
|
|
#ifdef ZIP_SUPPORT
|
|
" -c zip[:opts] compress output with deflate encoding\n"
|
|
/* " Deflate (ZIP) options:\n" */
|
|
" # set predictor value\n"
|
|
#endif
|
|
#ifdef PACKBITS_SUPPORT
|
|
" -c packbits compress output with packbits encoding\n"
|
|
#endif
|
|
#ifdef CCITT_SUPPORT
|
|
" -c g3[:opts] compress output with CCITT Group 3 encoding\n"
|
|
" -c g4 compress output with CCITT Group 4 encoding\n"
|
|
#endif
|
|
#if defined(LZW_SUPPORT) || defined(ZIP_SUPPORT) || \
|
|
defined(PACKBITS_SUPPORT) || defined(CCITT_SUPPORT)
|
|
" -c none use no compression algorithm on output\n"
|
|
#endif
|
|
"\n";
|
|
|
|
static void usage(int code)
|
|
{
|
|
FILE *out = (code == EXIT_SUCCESS) ? stdout : stderr;
|
|
|
|
fprintf(out, "%s\n\n", TIFFGetVersion());
|
|
fprintf(out, "%s", usage_info);
|
|
exit(code);
|
|
}
|