c38ac53b1d
Altered descriptions in tools to reflect "by default" lzw not supported Updated index.html to note lzw compression kit.
243 lines
6.6 KiB
C
243 lines
6.6 KiB
C
/* $Header: /cvs/maptools/cvsroot/libtiff/tools/ppm2tiff.c,v 1.3 1999-12-27 17:35:01 mwelles Exp $ */
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/*
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* Copyright (c) 1991-1997 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include "tiffio.h"
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#if defined(_WINDOWS) || defined(MSDOS)
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#define BINMODE "b"
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#else
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#define BINMODE
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#endif
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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 uint16 compression = COMPRESSION_PACKBITS;
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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 void usage(void);
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static int processCompressOptions(char*);
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static void
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BadPPM(char* file)
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{
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fprintf(stderr, "%s: Not a PPM file.\n", file);
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exit(-2);
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}
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int
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main(int argc, char* argv[])
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{
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uint16 photometric;
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uint32 rowsperstrip = (uint32) -1;
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double resolution = -1;
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unsigned char *buf = NULL;
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uint32 row;
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tsize_t linebytes;
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uint16 spp;
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TIFF *out;
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FILE *in;
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uint32 w, h;
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int prec;
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char *infile;
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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:r:R:")) != -1)
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switch (c) {
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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 'r': /* rows/strip */
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rowsperstrip = atoi(optarg);
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break;
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case 'R': /* resolution */
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resolution = atof(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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/*
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* If only one file is specified, read input from
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* stdin; otherwise usage is: ppm2tiff input output.
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*/
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if (argc - optind > 1) {
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infile = argv[optind++];
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in = fopen(infile, "r" BINMODE);
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if (in == NULL) {
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fprintf(stderr, "%s: Can not open.\n", infile);
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return (-1);
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}
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} else {
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infile = "<stdin>";
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in = stdin;
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}
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if (getc(in) != 'P')
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BadPPM(infile);
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switch (getc(in)) {
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case '5': /* it's a PGM file */
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spp = 1;
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photometric = PHOTOMETRIC_MINISBLACK;
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break;
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case '6': /* it's a PPM file */
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spp = 3;
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photometric = PHOTOMETRIC_RGB;
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if (compression == COMPRESSION_JPEG &&
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jpegcolormode == JPEGCOLORMODE_RGB)
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photometric = PHOTOMETRIC_YCBCR;
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break;
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default:
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BadPPM(infile);
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}
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if (fscanf(in, " %ld %ld %d", &w, &h, &prec) != 3)
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BadPPM(infile);
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if (getc(in) != '\n' || w <= 0 || h <= 0 || prec != 255)
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BadPPM(infile);
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out = TIFFOpen(argv[optind], "w");
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if (out == NULL)
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return (-4);
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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_ORIENTATION, ORIENTATION_TOPLEFT);
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TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, spp);
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TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);
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TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
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switch (compression) {
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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_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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linebytes = spp * w;
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if (TIFFScanlineSize(out) > linebytes)
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buf = (unsigned char *)_TIFFmalloc(linebytes);
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else
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buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
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TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
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TIFFDefaultStripSize(out, rowsperstrip));
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if (resolution > 0) {
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TIFFSetField(out, TIFFTAG_XRESOLUTION, resolution);
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TIFFSetField(out, TIFFTAG_YRESOLUTION, resolution);
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TIFFSetField(out, TIFFTAG_RESOLUTIONUNIT, RESUNIT_INCH);
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}
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for (row = 0; row < h; row++) {
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if (fread(buf, linebytes, 1, in) != 1) {
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fprintf(stderr, "%s: scanline %lu: Read error.\n",
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infile, (unsigned long) row);
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break;
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}
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if (TIFFWriteScanline(out, buf, row, 0) < 0)
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break;
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}
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(void) TIFFClose(out);
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if (buf)
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_TIFFfree(buf);
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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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if (cp && isdigit(cp[1]))
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quality = atoi(cp+1);
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if (cp && strchr(cp, 'r'))
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jpegcolormode = JPEGCOLORMODE_RAW;
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compression = COMPRESSION_JPEG;
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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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char* stuff[] = {
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"usage: ppm2tiff [options] input.ppm output.tif",
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"where options are:",
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" -r # make each strip have no more than # rows",
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" -R # set x&y resolution (dpi)",
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"",
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" -c jpeg[:opts] compress output with JPEG encoding",
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" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding",
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" (no longer supported by default due to Unisys patent enforcement)",
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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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"JPEG options:",
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" # set compression quality level (0-100, default 75)",
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" r output color image as RGB rather than YCbCr",
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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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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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