300 lines
8.7 KiB
C
300 lines
8.7 KiB
C
/* $Id: ras2tiff.c,v 1.15 2006-04-20 12:36:23 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 <stdlib.h>
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#include <string.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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#include "rasterfile.h"
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#include "tiffio.h"
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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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 = (uint16) -1;
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static int jpegcolormode = JPEGCOLORMODE_RGB;
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static int quality = 75; /* JPEG quality */
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static uint16 predictor = 0;
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static void usage(void);
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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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unsigned char* buf;
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long row;
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tsize_t linebytes, scanline;
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TIFF *out;
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FILE *in;
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struct rasterfile h;
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uint16 photometric;
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uint16 config = PLANARCONFIG_CONTIG;
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uint32 rowsperstrip = (uint32) -1;
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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:h")) != -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 'h':
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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 = fopen(argv[optind], "rb");
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if (in == NULL) {
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fprintf(stderr, "%s: Can not open.\n", argv[optind]);
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return (-1);
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}
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if (fread(&h, sizeof (h), 1, in) != 1) {
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fprintf(stderr, "%s: Can not read header.\n", argv[optind]);
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return (-2);
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}
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if (strcmp(h.ras_magic, RAS_MAGIC) == 0) {
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#ifndef WORDS_BIGENDIAN
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TIFFSwabLong((uint32 *)&h.ras_width);
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TIFFSwabLong((uint32 *)&h.ras_height);
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TIFFSwabLong((uint32 *)&h.ras_depth);
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TIFFSwabLong((uint32 *)&h.ras_length);
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TIFFSwabLong((uint32 *)&h.ras_type);
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TIFFSwabLong((uint32 *)&h.ras_maptype);
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TIFFSwabLong((uint32 *)&h.ras_maplength);
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#endif
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} else if (strcmp(h.ras_magic, RAS_MAGIC_INV) == 0) {
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#ifdef WORDS_BIGENDIAN
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TIFFSwabLong((uint32 *)&h.ras_width);
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TIFFSwabLong((uint32 *)&h.ras_height);
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TIFFSwabLong((uint32 *)&h.ras_depth);
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TIFFSwabLong((uint32 *)&h.ras_length);
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TIFFSwabLong((uint32 *)&h.ras_type);
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TIFFSwabLong((uint32 *)&h.ras_maptype);
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TIFFSwabLong((uint32 *)&h.ras_maplength);
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#endif
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} else {
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fprintf(stderr, "%s: Not a rasterfile.\n", argv[optind]);
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return (-3);
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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 (-4);
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TIFFSetField(out, TIFFTAG_IMAGEWIDTH, (uint32) h.ras_width);
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TIFFSetField(out, TIFFTAG_IMAGELENGTH, (uint32) h.ras_height);
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TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
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TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, h.ras_depth > 8 ? 3 : 1);
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TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, h.ras_depth > 1 ? 8 : 1);
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TIFFSetField(out, TIFFTAG_PLANARCONFIG, config);
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if (h.ras_maptype != RMT_NONE) {
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uint16* red;
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register uint16* map;
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register int i, j;
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int mapsize;
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buf = (unsigned char *)_TIFFmalloc(h.ras_maplength);
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if (buf == NULL) {
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fprintf(stderr, "No space to read in colormap.\n");
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return (-5);
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}
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if (fread(buf, h.ras_maplength, 1, in) != 1) {
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fprintf(stderr, "%s: Read error on colormap.\n",
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argv[optind]);
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return (-6);
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}
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mapsize = 1<<h.ras_depth;
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if (h.ras_maplength > mapsize*3) {
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fprintf(stderr,
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"%s: Huh, %ld colormap entries, should be %d?\n",
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argv[optind], h.ras_maplength, mapsize*3);
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return (-7);
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}
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red = (uint16*)_TIFFmalloc(mapsize * 3 * sizeof (uint16));
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if (red == NULL) {
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fprintf(stderr, "No space for colormap.\n");
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return (-8);
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}
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map = red;
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for (j = 0; j < 3; j++) {
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#define SCALE(x) (((x)*((1L<<16)-1))/255)
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for (i = h.ras_maplength/3; i-- > 0;)
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*map++ = SCALE(*buf++);
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if ((i = h.ras_maplength/3) < mapsize) {
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i = mapsize - i;
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_TIFFmemset(map, 0, i*sizeof (uint16));
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map += i;
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}
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}
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TIFFSetField(out, TIFFTAG_COLORMAP,
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red, red + mapsize, red + 2*mapsize);
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photometric = PHOTOMETRIC_PALETTE;
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if (compression == (uint16) -1)
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compression = COMPRESSION_PACKBITS;
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TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
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} else {
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/* XXX this is bogus... */
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photometric = h.ras_depth == 24 ?
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PHOTOMETRIC_RGB : PHOTOMETRIC_MINISBLACK;
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if (compression == (uint16) -1)
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compression = COMPRESSION_LZW;
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TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
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}
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switch (compression) {
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case COMPRESSION_JPEG:
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if (photometric == PHOTOMETRIC_RGB && jpegcolormode == JPEGCOLORMODE_RGB)
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photometric = PHOTOMETRIC_YCBCR;
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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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linebytes = ((h.ras_depth*h.ras_width+15) >> 3) &~ 1;
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scanline = TIFFScanlineSize(out);
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if (scanline > linebytes) {
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buf = (unsigned char *)_TIFFmalloc(scanline);
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_TIFFmemset(buf+linebytes, 0, scanline-linebytes);
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} else
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buf = (unsigned char *)_TIFFmalloc(linebytes);
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TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
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TIFFDefaultStripSize(out, rowsperstrip));
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for (row = 0; row < h.ras_height; row++) {
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if (fread(buf, linebytes, 1, in) != 1) {
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fprintf(stderr, "%s: scanline %ld: Read error.\n",
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argv[optind], row);
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break;
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}
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if (h.ras_type == RT_STANDARD && h.ras_depth == 24) {
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tsize_t cc = h.ras_width;
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unsigned char* cp = buf;
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#define SWAP(a,b) { unsigned char t = (a); (a) = (b); (b) = t; }
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do {
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SWAP(cp[0], cp[2]);
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cp += 3;
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} while (--cc);
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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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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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char* stuff[] = {
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"usage: ras2tiff [options] input.ras 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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"",
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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 jpeg[:opts] compress output with JPEG 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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"For example, -c jpeg:r:50 to get JPEG-encoded RGB data with 50% comp. quality",
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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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" -h this help message",
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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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