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-rw-r--r--tiff/tools/tiff2bw.c467
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diff --git a/tiff/tools/tiff2bw.c b/tiff/tools/tiff2bw.c
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+++ b/tiff/tools/tiff2bw.c
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+/* $Id: tiff2bw.c,v 1.12.2.1 2010-06-08 18:50:44 bfriesen Exp $ */
+
+/*
+ * Copyright (c) 1988-1997 Sam Leffler
+ * Copyright (c) 1991-1997 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the names of
+ * Sam Leffler and Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Sam Leffler and Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include "tif_config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include "tiffio.h"
+
+#define streq(a,b) (strcmp((a),(b)) == 0)
+#define strneq(a,b,n) (strncmp(a,b,n) == 0)
+
+/* x% weighting -> fraction of full color */
+#define PCT(x) (((x)*255+127)/100)
+int RED = PCT(30); /* 30% */
+int GREEN = PCT(59); /* 59% */
+int BLUE = PCT(11); /* 11% */
+
+static void usage(void);
+static int processCompressOptions(char*);
+
+static void
+compresscontig(unsigned char* out, unsigned char* rgb, uint32 n)
+{
+ register int v, red = RED, green = GREEN, blue = BLUE;
+
+ while (n-- > 0) {
+ v = red*(*rgb++);
+ v += green*(*rgb++);
+ v += blue*(*rgb++);
+ *out++ = v>>8;
+ }
+}
+
+static void
+compresssep(unsigned char* out,
+ unsigned char* r, unsigned char* g, unsigned char* b, uint32 n)
+{
+ register uint32 red = RED, green = GREEN, blue = BLUE;
+
+ while (n-- > 0)
+ *out++ = (unsigned char)
+ ((red*(*r++) + green*(*g++) + blue*(*b++)) >> 8);
+}
+
+static int
+checkcmap(TIFF* tif, int n, uint16* r, uint16* g, uint16* b)
+{
+ while (n-- > 0)
+ if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
+ return (16);
+ TIFFWarning(TIFFFileName(tif), "Assuming 8-bit colormap");
+ return (8);
+}
+
+static void
+compresspalette(unsigned char* out, unsigned char* data, uint32 n, uint16* rmap, uint16* gmap, uint16* bmap)
+{
+ register int v, red = RED, green = GREEN, blue = BLUE;
+
+ while (n-- > 0) {
+ unsigned int ix = *data++;
+ v = red*rmap[ix];
+ v += green*gmap[ix];
+ v += blue*bmap[ix];
+ *out++ = v>>8;
+ }
+}
+
+static uint16 compression = (uint16) -1;
+static uint16 predictor = 0;
+static int jpegcolormode = JPEGCOLORMODE_RGB;
+static int quality = 75; /* JPEG quality */
+
+static void cpTags(TIFF* in, TIFF* out);
+
+int
+main(int argc, char* argv[])
+{
+ uint32 rowsperstrip = (uint32) -1;
+ TIFF *in, *out;
+ uint32 w, h;
+ uint16 samplesperpixel;
+ uint16 bitspersample;
+ uint16 config;
+ uint16 photometric;
+ uint16* red;
+ uint16* green;
+ uint16* blue;
+ tsize_t rowsize;
+ register uint32 row;
+ register tsample_t s;
+ unsigned char *inbuf, *outbuf;
+ char thing[1024];
+ int c;
+ extern int optind;
+ extern char *optarg;
+
+ while ((c = getopt(argc, argv, "c:r:R:G:B:")) != -1)
+ switch (c) {
+ case 'c': /* compression scheme */
+ if (!processCompressOptions(optarg))
+ usage();
+ break;
+ case 'r': /* rows/strip */
+ rowsperstrip = atoi(optarg);
+ break;
+ case 'R':
+ RED = PCT(atoi(optarg));
+ break;
+ case 'G':
+ GREEN = PCT(atoi(optarg));
+ break;
+ case 'B':
+ BLUE = PCT(atoi(optarg));
+ break;
+ case '?':
+ usage();
+ /*NOTREACHED*/
+ }
+ if (argc - optind < 2)
+ usage();
+ in = TIFFOpen(argv[optind], "r");
+ if (in == NULL)
+ return (-1);
+ photometric = 0;
+ TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &photometric);
+ if (photometric != PHOTOMETRIC_RGB && photometric != PHOTOMETRIC_PALETTE ) {
+ fprintf(stderr,
+ "%s: Bad photometric; can only handle RGB and Palette images.\n",
+ argv[optind]);
+ return (-1);
+ }
+ TIFFGetField(in, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
+ if (samplesperpixel != 1 && samplesperpixel != 3) {
+ fprintf(stderr, "%s: Bad samples/pixel %u.\n",
+ argv[optind], samplesperpixel);
+ return (-1);
+ }
+ TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
+ if (bitspersample != 8) {
+ fprintf(stderr,
+ " %s: Sorry, only handle 8-bit samples.\n", argv[optind]);
+ return (-1);
+ }
+ TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &w);
+ TIFFGetField(in, TIFFTAG_IMAGELENGTH, &h);
+ TIFFGetField(in, TIFFTAG_PLANARCONFIG, &config);
+
+ out = TIFFOpen(argv[optind+1], "w");
+ if (out == NULL)
+ return (-1);
+ TIFFSetField(out, TIFFTAG_IMAGEWIDTH, w);
+ TIFFSetField(out, TIFFTAG_IMAGELENGTH, h);
+ TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
+ TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
+ TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+ cpTags(in, out);
+ if (compression != (uint16) -1) {
+ TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
+ switch (compression) {
+ case COMPRESSION_JPEG:
+ TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
+ TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
+ break;
+ case COMPRESSION_LZW:
+ case COMPRESSION_DEFLATE:
+ if (predictor != 0)
+ TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
+ break;
+ }
+ }
+ TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
+ sprintf(thing, "B&W version of %s", argv[optind]);
+ TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
+ TIFFSetField(out, TIFFTAG_SOFTWARE, "tiff2bw");
+ outbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
+ TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
+ TIFFDefaultStripSize(out, rowsperstrip));
+
+#define pack(a,b) ((a)<<8 | (b))
+ switch (pack(photometric, config)) {
+ case pack(PHOTOMETRIC_PALETTE, PLANARCONFIG_CONTIG):
+ case pack(PHOTOMETRIC_PALETTE, PLANARCONFIG_SEPARATE):
+ TIFFGetField(in, TIFFTAG_COLORMAP, &red, &green, &blue);
+ /*
+ * Convert 16-bit colormap to 8-bit (unless it looks
+ * like an old-style 8-bit colormap).
+ */
+ if (checkcmap(in, 1<<bitspersample, red, green, blue) == 16) {
+ int i;
+#define CVT(x) (((x) * 255L) / ((1L<<16)-1))
+ for (i = (1<<bitspersample)-1; i >= 0; i--) {
+ red[i] = CVT(red[i]);
+ green[i] = CVT(green[i]);
+ blue[i] = CVT(blue[i]);
+ }
+#undef CVT
+ }
+ inbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
+ for (row = 0; row < h; row++) {
+ if (TIFFReadScanline(in, inbuf, row, 0) < 0)
+ break;
+ compresspalette(outbuf, inbuf, w, red, green, blue);
+ if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
+ break;
+ }
+ break;
+ case pack(PHOTOMETRIC_RGB, PLANARCONFIG_CONTIG):
+ inbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
+ for (row = 0; row < h; row++) {
+ if (TIFFReadScanline(in, inbuf, row, 0) < 0)
+ break;
+ compresscontig(outbuf, inbuf, w);
+ if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
+ break;
+ }
+ break;
+ case pack(PHOTOMETRIC_RGB, PLANARCONFIG_SEPARATE):
+ rowsize = TIFFScanlineSize(in);
+ inbuf = (unsigned char *)_TIFFmalloc(3*rowsize);
+ for (row = 0; row < h; row++) {
+ for (s = 0; s < 3; s++)
+ if (TIFFReadScanline(in,
+ inbuf+s*rowsize, row, s) < 0)
+ return (-1);
+ compresssep(outbuf,
+ inbuf, inbuf+rowsize, inbuf+2*rowsize, w);
+ if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
+ break;
+ }
+ break;
+ }
+#undef pack
+ TIFFClose(out);
+ return (0);
+}
+
+static int
+processCompressOptions(char* opt)
+{
+ if (streq(opt, "none"))
+ compression = COMPRESSION_NONE;
+ else if (streq(opt, "packbits"))
+ compression = COMPRESSION_PACKBITS;
+ else if (strneq(opt, "jpeg", 4)) {
+ char* cp = strchr(opt, ':');
+
+ compression = COMPRESSION_JPEG;
+ while( cp )
+ {
+ if (isdigit((int)cp[1]))
+ quality = atoi(cp+1);
+ else if (cp[1] == 'r' )
+ jpegcolormode = JPEGCOLORMODE_RAW;
+ else
+ usage();
+
+ cp = strchr(cp+1,':');
+ }
+ } else if (strneq(opt, "lzw", 3)) {
+ char* cp = strchr(opt, ':');
+ if (cp)
+ predictor = atoi(cp+1);
+ compression = COMPRESSION_LZW;
+ } else if (strneq(opt, "zip", 3)) {
+ char* cp = strchr(opt, ':');
+ if (cp)
+ predictor = atoi(cp+1);
+ compression = COMPRESSION_DEFLATE;
+ } else
+ return (0);
+ return (1);
+}
+
+#define CopyField(tag, v) \
+ if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
+#define CopyField2(tag, v1, v2) \
+ if (TIFFGetField(in, tag, &v1, &v2)) TIFFSetField(out, tag, v1, v2)
+#define CopyField3(tag, v1, v2, v3) \
+ if (TIFFGetField(in, tag, &v1, &v2, &v3)) TIFFSetField(out, tag, v1, v2, v3)
+#define CopyField4(tag, v1, v2, v3, v4) \
+ if (TIFFGetField(in, tag, &v1, &v2, &v3, &v4)) TIFFSetField(out, tag, v1, v2, v3, v4)
+
+static void
+cpTag(TIFF* in, TIFF* out, uint16 tag, uint16 count, TIFFDataType type)
+{
+ switch (type) {
+ case TIFF_SHORT:
+ if (count == 1) {
+ uint16 shortv;
+ CopyField(tag, shortv);
+ } else if (count == 2) {
+ uint16 shortv1, shortv2;
+ CopyField2(tag, shortv1, shortv2);
+ } else if (count == 4) {
+ uint16 *tr, *tg, *tb, *ta;
+ CopyField4(tag, tr, tg, tb, ta);
+ } else if (count == (uint16) -1) {
+ uint16 shortv1;
+ uint16* shortav;
+ CopyField2(tag, shortv1, shortav);
+ }
+ break;
+ case TIFF_LONG:
+ { uint32 longv;
+ CopyField(tag, longv);
+ }
+ break;
+ case TIFF_RATIONAL:
+ if (count == 1) {
+ float floatv;
+ CopyField(tag, floatv);
+ } else if (count == (uint16) -1) {
+ float* floatav;
+ CopyField(tag, floatav);
+ }
+ break;
+ case TIFF_ASCII:
+ { char* stringv;
+ CopyField(tag, stringv);
+ }
+ break;
+ case TIFF_DOUBLE:
+ if (count == 1) {
+ double doublev;
+ CopyField(tag, doublev);
+ } else if (count == (uint16) -1) {
+ double* doubleav;
+ CopyField(tag, doubleav);
+ }
+ break;
+ default:
+ TIFFError(TIFFFileName(in),
+ "Data type %d is not supported, tag %d skipped.",
+ tag, type);
+ }
+}
+
+#undef CopyField4
+#undef CopyField3
+#undef CopyField2
+#undef CopyField
+
+static struct cpTag {
+ uint16 tag;
+ uint16 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, 1, TIFF_RATIONAL },
+ { TIFFTAG_PRIMARYCHROMATICITIES,(uint16) -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) -1,TIFF_RATIONAL },
+ { TIFFTAG_YCBCRSUBSAMPLING, 2, TIFF_SHORT },
+ { TIFFTAG_YCBCRPOSITIONING, 1, TIFF_SHORT },
+ { TIFFTAG_REFERENCEBLACKWHITE, (uint16) -1,TIFF_RATIONAL },
+ { TIFFTAG_EXTRASAMPLES, (uint16) -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)
+{
+ struct cpTag *p;
+ for (p = tags; p < &tags[NTAGS]; p++)
+ cpTag(in, out, p->tag, p->count, p->type);
+}
+#undef NTAGS
+
+char* stuff[] = {
+"usage: tiff2bw [options] input.tif output.tif",
+"where options are:",
+" -R % use #% from red channel",
+" -G % use #% from green channel",
+" -B % use #% from blue channel",
+"",
+" -r # make each strip have no more than # rows",
+"",
+" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding",
+" -c zip[:opts] compress output with deflate encoding",
+" -c packbits compress output with packbits encoding",
+" -c g3[:opts] compress output with CCITT Group 3 encoding",
+" -c g4 compress output with CCITT Group 4 encoding",
+" -c none use no compression algorithm on output",
+"",
+"LZW and deflate options:",
+" # set predictor value",
+"For example, -c lzw:2 to get LZW-encoded data with horizontal differencing",
+NULL
+};
+
+static void
+usage(void)
+{
+ char buf[BUFSIZ];
+ int i;
+
+ setbuf(stderr, buf);
+ fprintf(stderr, "%s\n\n", TIFFGetVersion());
+ for (i = 0; stuff[i] != NULL; i++)
+ fprintf(stderr, "%s\n", stuff[i]);
+ exit(-1);
+}
+
+/* vim: set ts=8 sts=8 sw=8 noet: */
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */
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