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-rw-r--r--tiff/tools/tiffdither.c332
1 files changed, 0 insertions, 332 deletions
diff --git a/tiff/tools/tiffdither.c b/tiff/tools/tiffdither.c
deleted file mode 100644
index dee2a02..0000000
--- a/tiff/tools/tiffdither.c
+++ /dev/null
@@ -1,332 +0,0 @@
-/* $Id: tiffdither.c,v 1.9.2.1 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>
-
-#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)
-
-#define CopyField(tag, v) \
- if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
-
-uint32 imagewidth;
-uint32 imagelength;
-int threshold = 128;
-
-static void usage(void);
-
-/*
- * Floyd-Steinberg error propragation with threshold.
- * This code is stolen from tiffmedian.
- */
-static void
-fsdither(TIFF* in, TIFF* out)
-{
- unsigned char *outline, *inputline, *inptr;
- short *thisline, *nextline, *tmpptr;
- register unsigned char *outptr;
- register short *thisptr, *nextptr;
- register uint32 i, j;
- uint32 imax, jmax;
- int lastline, lastpixel;
- int bit;
- tsize_t outlinesize;
-
- imax = imagelength - 1;
- jmax = imagewidth - 1;
- inputline = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
- thisline = (short *)_TIFFmalloc(imagewidth * sizeof (short));
- nextline = (short *)_TIFFmalloc(imagewidth * sizeof (short));
- outlinesize = TIFFScanlineSize(out);
- outline = (unsigned char *) _TIFFmalloc(outlinesize);
-
- /*
- * Get first line
- */
- if (TIFFReadScanline(in, inputline, 0, 0) <= 0)
- return;
- inptr = inputline;
- nextptr = nextline;
- for (j = 0; j < imagewidth; ++j)
- *nextptr++ = *inptr++;
- for (i = 1; i < imagelength; ++i) {
- tmpptr = thisline;
- thisline = nextline;
- nextline = tmpptr;
- lastline = (i == imax);
- if (TIFFReadScanline(in, inputline, i, 0) <= 0)
- break;
- inptr = inputline;
- nextptr = nextline;
- for (j = 0; j < imagewidth; ++j)
- *nextptr++ = *inptr++;
- thisptr = thisline;
- nextptr = nextline;
- _TIFFmemset(outptr = outline, 0, outlinesize);
- bit = 0x80;
- for (j = 0; j < imagewidth; ++j) {
- register int v;
-
- lastpixel = (j == jmax);
- v = *thisptr++;
- if (v < 0)
- v = 0;
- else if (v > 255)
- v = 255;
- if (v > threshold) {
- *outptr |= bit;
- v -= 255;
- }
- bit >>= 1;
- if (bit == 0) {
- outptr++;
- bit = 0x80;
- }
- if (!lastpixel)
- thisptr[0] += v * 7 / 16;
- if (!lastline) {
- if (j != 0)
- nextptr[-1] += v * 3 / 16;
- *nextptr++ += v * 5 / 16;
- if (!lastpixel)
- nextptr[0] += v / 16;
- }
- }
- if (TIFFWriteScanline(out, outline, i-1, 0) < 0)
- break;
- }
- _TIFFfree(inputline);
- _TIFFfree(thisline);
- _TIFFfree(nextline);
- _TIFFfree(outline);
-}
-
-static uint16 compression = COMPRESSION_PACKBITS;
-static uint16 predictor = 0;
-static uint32 group3options = 0;
-
-static void
-processG3Options(char* cp)
-{
- if ((cp = strchr(cp, ':'))) {
- do {
- cp++;
- if (strneq(cp, "1d", 2))
- group3options &= ~GROUP3OPT_2DENCODING;
- else if (strneq(cp, "2d", 2))
- group3options |= GROUP3OPT_2DENCODING;
- else if (strneq(cp, "fill", 4))
- group3options |= GROUP3OPT_FILLBITS;
- else
- usage();
- } while ((cp = strchr(cp, ':')));
- }
-}
-
-static int
-processCompressOptions(char* opt)
-{
- if (streq(opt, "none"))
- compression = COMPRESSION_NONE;
- else if (streq(opt, "packbits"))
- compression = COMPRESSION_PACKBITS;
- else if (strneq(opt, "g3", 2)) {
- processG3Options(opt);
- compression = COMPRESSION_CCITTFAX3;
- } else if (streq(opt, "g4"))
- compression = COMPRESSION_CCITTFAX4;
- 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);
-}
-
-int
-main(int argc, char* argv[])
-{
- TIFF *in, *out;
- uint16 samplesperpixel, bitspersample = 1, shortv;
- float floatv;
- char thing[1024];
- uint32 rowsperstrip = (uint32) -1;
- int onestrip = 0;
- uint16 fillorder = 0;
- int c;
- extern int optind;
- extern char *optarg;
-
- while ((c = getopt(argc, argv, "c:f:r:t:")) != -1)
- switch (c) {
- case 'c': /* compression scheme */
- if (!processCompressOptions(optarg))
- usage();
- break;
- case 'f': /* fill order */
- if (streq(optarg, "lsb2msb"))
- fillorder = FILLORDER_LSB2MSB;
- else if (streq(optarg, "msb2lsb"))
- fillorder = FILLORDER_MSB2LSB;
- else
- usage();
- break;
- case 'r': /* rows/strip */
- rowsperstrip = atoi(optarg);
- onestrip = 0;
- break;
- case 't':
- threshold = atoi(optarg);
- if (threshold < 0)
- threshold = 0;
- else if (threshold > 255)
- threshold = 255;
- break;
- case '?':
- usage();
- /*NOTREACHED*/
- }
- if (argc - optind < 2)
- usage();
- in = TIFFOpen(argv[optind], "r");
- if (in == NULL)
- return (-1);
- TIFFGetField(in, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
- if (samplesperpixel != 1) {
- fprintf(stderr, "%s: Not a b&w image.\n", argv[0]);
- return (-1);
- }
- TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
- if (bitspersample != 8) {
- fprintf(stderr,
- " %s: Sorry, only handle 8-bit samples.\n", argv[0]);
- return (-1);
- }
- out = TIFFOpen(argv[optind+1], "w");
- if (out == NULL)
- return (-1);
- CopyField(TIFFTAG_IMAGEWIDTH, imagewidth);
- TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);
- TIFFSetField(out, TIFFTAG_IMAGELENGTH, imagelength-1);
- TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 1);
- TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
- TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
- TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
- if (fillorder)
- TIFFSetField(out, TIFFTAG_FILLORDER, fillorder);
- else
- CopyField(TIFFTAG_FILLORDER, shortv);
- sprintf(thing, "Dithered B&W version of %s", argv[optind]);
- TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
- CopyField(TIFFTAG_PHOTOMETRIC, shortv);
- CopyField(TIFFTAG_ORIENTATION, shortv);
- CopyField(TIFFTAG_XRESOLUTION, floatv);
- CopyField(TIFFTAG_YRESOLUTION, floatv);
- CopyField(TIFFTAG_RESOLUTIONUNIT, shortv);
- if (onestrip)
- rowsperstrip = imagelength-1;
- else
- rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip);
- TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
- switch (compression) {
- case COMPRESSION_CCITTFAX3:
- TIFFSetField(out, TIFFTAG_GROUP3OPTIONS, group3options);
- break;
- case COMPRESSION_LZW:
- case COMPRESSION_DEFLATE:
- if (predictor)
- TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
- break;
- }
- fsdither(in, out);
- TIFFClose(in);
- TIFFClose(out);
- return (0);
-}
-
-char* stuff[] = {
-"usage: tiffdither [options] input.tif output.tif",
-"where options are:",
-" -r # make each strip have no more than # rows",
-" -f lsb2msb force lsb-to-msb FillOrder for output",
-" -f msb2lsb force msb-to-lsb FillOrder for output",
-" -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",
-"",
-"Group 3 options:",
-" 1d use default CCITT Group 3 1D-encoding",
-" 2d use optional CCITT Group 3 2D-encoding",
-" fill byte-align EOL codes",
-"For example, -c g3:2d:fill to get G3-2D-encoded data with byte-aligned EOLs",
-"",
-"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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