435 lines
12 KiB
C
435 lines
12 KiB
C
/* $Id: pal2rgb.c,v 1.13 2010-07-02 12:02:56 dron Exp $ */
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/*
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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 "tif_config.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.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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#ifdef NEED_LIBPORT
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# include "libport.h"
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#endif
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#include "tiffio.h"
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#define streq(a,b) (strcmp(a,b) == 0)
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#define strneq(a,b,n) (strncmp(a,b,n) == 0)
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static void usage(void);
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static void cpTags(TIFF* in, TIFF* out);
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static int
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checkcmap(int n, uint16* r, uint16* g, uint16* 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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fprintf(stderr, "Warning, assuming 8-bit colormap.\n");
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return (8);
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}
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#define CopyField(tag, v) \
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if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
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#define CopyField3(tag, v1, v2, v3) \
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if (TIFFGetField(in, tag, &v1, &v2, &v3)) TIFFSetField(out, tag, v1, v2, v3)
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static uint16 compression = (uint16) -1;
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static uint16 predictor = 0;
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static int quality = 75; /* JPEG quality */
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static int jpegcolormode = JPEGCOLORMODE_RGB;
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static int processCompressOptions(char*);
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int
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main(int argc, char* argv[])
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{
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uint16 bitspersample, shortv;
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uint32 imagewidth, imagelength;
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uint16 config = PLANARCONFIG_CONTIG;
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uint32 rowsperstrip = (uint32) -1;
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uint16 photometric = PHOTOMETRIC_RGB;
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uint16 *rmap, *gmap, *bmap;
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uint32 row;
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int cmap = -1;
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TIFF *in, *out;
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int c;
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extern int optind;
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extern char* optarg;
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while ((c = getopt(argc, argv, "C:c:p:r:")) != -1)
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switch (c) {
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case 'C': /* force colormap interpretation */
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cmap = atoi(optarg);
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break;
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case 'c': /* compression scheme */
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if (!processCompressOptions(optarg))
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usage();
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break;
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case 'p': /* planar configuration */
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if (streq(optarg, "separate"))
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config = PLANARCONFIG_SEPARATE;
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else if (streq(optarg, "contig"))
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config = PLANARCONFIG_CONTIG;
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else
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usage();
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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 '?':
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usage();
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/*NOTREACHED*/
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}
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if (argc - optind != 2)
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usage();
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in = TIFFOpen(argv[optind], "r");
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if (in == NULL)
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return (-1);
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if (!TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &shortv) ||
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shortv != PHOTOMETRIC_PALETTE) {
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fprintf(stderr, "%s: Expecting a palette image.\n",
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argv[optind]);
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return (-1);
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}
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if (!TIFFGetField(in, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
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fprintf(stderr,
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"%s: No colormap (not a valid palette image).\n",
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argv[optind]);
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return (-1);
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}
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bitspersample = 0;
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TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
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if (bitspersample != 8) {
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fprintf(stderr, "%s: Sorry, can only handle 8-bit images.\n",
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argv[optind]);
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return (-1);
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}
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out = TIFFOpen(argv[optind+1], "w");
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if (out == NULL)
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return (-2);
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cpTags(in, out);
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TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &imagewidth);
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TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);
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if (compression != (uint16)-1)
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TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
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else
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TIFFGetField(in, TIFFTAG_COMPRESSION, &compression);
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switch (compression) {
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case COMPRESSION_JPEG:
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if (jpegcolormode == JPEGCOLORMODE_RGB)
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photometric = PHOTOMETRIC_YCBCR;
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else
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photometric = PHOTOMETRIC_RGB;
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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_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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TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);
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TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);
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TIFFSetField(out, TIFFTAG_PLANARCONFIG, config);
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TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
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rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip));
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(void) TIFFGetField(in, TIFFTAG_PLANARCONFIG, &shortv);
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if (cmap == -1)
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cmap = checkcmap(1<<bitspersample, rmap, gmap, bmap);
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if (cmap == 16) {
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/*
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* Convert 16-bit colormap to 8-bit.
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*/
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int i;
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for (i = (1<<bitspersample)-1; i >= 0; i--) {
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#define CVT(x) (((x) * 255) / ((1L<<16)-1))
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rmap[i] = CVT(rmap[i]);
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gmap[i] = CVT(gmap[i]);
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bmap[i] = CVT(bmap[i]);
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}
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}
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{ unsigned char *ibuf, *obuf;
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register unsigned char* pp;
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register uint32 x;
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ibuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(in));
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obuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(out));
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switch (config) {
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case PLANARCONFIG_CONTIG:
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for (row = 0; row < imagelength; row++) {
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if (!TIFFReadScanline(in, ibuf, row, 0))
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goto done;
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pp = obuf;
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for (x = 0; x < imagewidth; x++) {
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*pp++ = (unsigned char) rmap[ibuf[x]];
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*pp++ = (unsigned char) gmap[ibuf[x]];
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*pp++ = (unsigned char) bmap[ibuf[x]];
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}
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if (!TIFFWriteScanline(out, obuf, row, 0))
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goto done;
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}
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break;
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case PLANARCONFIG_SEPARATE:
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for (row = 0; row < imagelength; row++) {
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if (!TIFFReadScanline(in, ibuf, row, 0))
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goto done;
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for (pp = obuf, x = 0; x < imagewidth; x++)
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*pp++ = (unsigned char) rmap[ibuf[x]];
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if (!TIFFWriteScanline(out, obuf, row, 0))
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goto done;
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for (pp = obuf, x = 0; x < imagewidth; x++)
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*pp++ = (unsigned char) gmap[ibuf[x]];
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if (!TIFFWriteScanline(out, obuf, row, 0))
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goto done;
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for (pp = obuf, x = 0; x < imagewidth; x++)
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*pp++ = (unsigned char) bmap[ibuf[x]];
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if (!TIFFWriteScanline(out, obuf, row, 0))
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goto done;
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}
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break;
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}
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_TIFFfree(ibuf);
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_TIFFfree(obuf);
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}
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done:
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(void) TIFFClose(in);
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(void) TIFFClose(out);
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return (0);
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}
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static int
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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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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();
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cp = strchr(cp+1,':');
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}
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} else if (strneq(opt, "lzw", 3)) {
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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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} else if (strneq(opt, "zip", 3)) {
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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_DEFLATE;
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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)) TIFFSetField(out, tag, v)
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#define CopyField2(tag, v1, v2) \
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if (TIFFGetField(in, tag, &v1, &v2)) 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)) 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)) TIFFSetField(out, tag, v1, v2, v3, v4)
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static void
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cpTag(TIFF* in, TIFF* out, uint16 tag, uint16 count, TIFFDataType type)
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{
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switch (type) {
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case TIFF_SHORT:
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if (count == 1) {
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uint16 shortv;
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CopyField(tag, shortv);
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} else if (count == 2) {
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uint16 shortv1, shortv2;
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CopyField2(tag, shortv1, shortv2);
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} else if (count == 4) {
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uint16 *tr, *tg, *tb, *ta;
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CopyField4(tag, tr, tg, tb, ta);
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} else if (count == (uint16) -1) {
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uint16 shortv1;
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uint16* 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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{ uint32 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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float floatv;
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CopyField(tag, floatv);
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} else if (count == (uint16) -1) {
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float* floatav;
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CopyField(tag, floatav);
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}
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break;
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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:
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if (count == 1) {
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double doublev;
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CopyField(tag, doublev);
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} else if (count == (uint16) -1) {
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double* doubleav;
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CopyField(tag, doubleav);
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}
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break;
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default:
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TIFFError(TIFFFileName(in),
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"Data type %d is not supported, tag %d skipped.",
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tag, type);
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}
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}
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#undef CopyField4
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#undef CopyField3
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#undef CopyField2
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#undef CopyField
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static struct cpTag {
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uint16 tag;
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uint16 count;
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TIFFDataType type;
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} tags[] = {
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{ TIFFTAG_IMAGEWIDTH, 1, TIFF_LONG },
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{ TIFFTAG_IMAGELENGTH, 1, TIFF_LONG },
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{ TIFFTAG_BITSPERSAMPLE, 1, TIFF_SHORT },
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{ TIFFTAG_COMPRESSION, 1, TIFF_SHORT },
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{ TIFFTAG_FILLORDER, 1, TIFF_SHORT },
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{ TIFFTAG_ROWSPERSTRIP, 1, TIFF_LONG },
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{ TIFFTAG_GROUP3OPTIONS, 1, TIFF_LONG },
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{ TIFFTAG_SUBFILETYPE, 1, TIFF_LONG },
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{ TIFFTAG_THRESHHOLDING, 1, TIFF_SHORT },
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{ TIFFTAG_DOCUMENTNAME, 1, TIFF_ASCII },
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{ TIFFTAG_IMAGEDESCRIPTION, 1, TIFF_ASCII },
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{ TIFFTAG_MAKE, 1, TIFF_ASCII },
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{ TIFFTAG_MODEL, 1, TIFF_ASCII },
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{ TIFFTAG_ORIENTATION, 1, TIFF_SHORT },
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{ TIFFTAG_MINSAMPLEVALUE, 1, TIFF_SHORT },
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{ TIFFTAG_MAXSAMPLEVALUE, 1, TIFF_SHORT },
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{ TIFFTAG_XRESOLUTION, 1, TIFF_RATIONAL },
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{ TIFFTAG_YRESOLUTION, 1, TIFF_RATIONAL },
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{ TIFFTAG_PAGENAME, 1, TIFF_ASCII },
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{ TIFFTAG_XPOSITION, 1, TIFF_RATIONAL },
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{ TIFFTAG_YPOSITION, 1, TIFF_RATIONAL },
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{ TIFFTAG_GROUP4OPTIONS, 1, TIFF_LONG },
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{ TIFFTAG_RESOLUTIONUNIT, 1, TIFF_SHORT },
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{ TIFFTAG_PAGENUMBER, 2, TIFF_SHORT },
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{ TIFFTAG_SOFTWARE, 1, TIFF_ASCII },
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{ TIFFTAG_DATETIME, 1, TIFF_ASCII },
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{ TIFFTAG_ARTIST, 1, TIFF_ASCII },
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{ TIFFTAG_HOSTCOMPUTER, 1, TIFF_ASCII },
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{ TIFFTAG_WHITEPOINT, 2, TIFF_RATIONAL },
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{ TIFFTAG_PRIMARYCHROMATICITIES, (uint16) -1,TIFF_RATIONAL },
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{ TIFFTAG_HALFTONEHINTS, 2, TIFF_SHORT },
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{ TIFFTAG_BADFAXLINES, 1, TIFF_LONG },
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{ TIFFTAG_CLEANFAXDATA, 1, TIFF_SHORT },
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{ TIFFTAG_CONSECUTIVEBADFAXLINES, 1, TIFF_LONG },
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{ TIFFTAG_INKSET, 1, TIFF_SHORT },
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{ TIFFTAG_INKNAMES, 1, TIFF_ASCII },
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{ TIFFTAG_DOTRANGE, 2, TIFF_SHORT },
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{ TIFFTAG_TARGETPRINTER, 1, TIFF_ASCII },
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{ TIFFTAG_SAMPLEFORMAT, 1, TIFF_SHORT },
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{ TIFFTAG_YCBCRCOEFFICIENTS, (uint16) -1,TIFF_RATIONAL },
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{ TIFFTAG_YCBCRSUBSAMPLING, 2, TIFF_SHORT },
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{ TIFFTAG_YCBCRPOSITIONING, 1, TIFF_SHORT },
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{ TIFFTAG_REFERENCEBLACKWHITE, (uint16) -1,TIFF_RATIONAL },
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};
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#define NTAGS (sizeof (tags) / sizeof (tags[0]))
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static void
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cpTags(TIFF* in, TIFF* out)
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{
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struct cpTag *p;
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for (p = tags; p < &tags[NTAGS]; p++)
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cpTag(in, out, p->tag, p->count, p->type);
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}
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#undef NTAGS
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char* stuff[] = {
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"usage: pal2rgb [options] input.tif output.tif",
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"where options are:",
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" -p contig pack samples contiguously (e.g. RGBRGB...)",
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" -p separate store samples separately (e.g. RRR...GGG...BBB...)",
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" -r # make each strip have no more than # rows",
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" -C 8 assume 8-bit colormap values (instead of 16-bit)",
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" -C 16 assume 16-bit colormap values",
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"",
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" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding",
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" -c zip[:opts] compress output with deflate encoding",
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" -c packbits compress output with packbits encoding",
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" -c none use no compression algorithm on output",
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"",
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"LZW and deflate options:",
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" # set predictor value",
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"For example, -c lzw:2 to get LZW-encoded data with horizontal differencing",
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NULL
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};
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static void
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usage(void)
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{
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char buf[BUFSIZ];
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int i;
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setbuf(stderr, buf);
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fprintf(stderr, "%s\n\n", TIFFGetVersion());
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for (i = 0; stuff[i] != NULL; i++)
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fprintf(stderr, "%s\n", stuff[i]);
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exit(-1);
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}
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/* vim: set ts=8 sts=8 sw=8 noet: */
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 8
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* fill-column: 78
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* End:
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*/
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