345 lines
8.9 KiB
C
345 lines
8.9 KiB
C
#ifndef lint
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static char id[] = "$Id: tif2ras.c,v 1.3 2010-06-08 18:55:15 bfriesen Exp $";
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#endif
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/*-
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* tif2ras.c - Converts from a Tagged Image File Format image to a Sun Raster.
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*
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* Copyright (c) 1990 by Sun Microsystems, Inc.
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*
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* Author: Patrick J. Naughton
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* naughton@wind.sun.com
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation.
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*
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* This file is provided AS IS with no warranties of any kind. The author
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* shall have no liability with respect to the infringement of copyrights,
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* trade secrets or any patents by this file or any part thereof. In no
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* event will the author be liable for any lost revenue or profits or
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* other special, indirect and consequential damages.
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*
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* Comments and additions should be sent to the author:
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*
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* Patrick J. Naughton
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* Sun Microsystems
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* 2550 Garcia Ave, MS 14-40
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* Mountain View, CA 94043
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* (415) 336-1080
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*
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* Revision History:
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* 10-Jan-89: Created.
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* 06-Mar-90: Change to byte encoded rasterfiles.
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* fix bug in call to ReadScanline().
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* fix bug in CVT() macro.
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* fix assignment of td, (missing &).
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*
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* Description:
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* This program takes a MicroSoft/Aldus "Tagged Image File Format" image or
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* "TIFF" file as input and writes a Sun Rasterfile [see rasterfile(5)]. The
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* output file may be standard output, but the input TIFF file must be a real
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* file since seek(2) is used.
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*/
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#include <stdio.h>
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#include <pixrect/pixrect_hs.h>
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#include "tiffio.h"
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typedef int boolean;
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#define True (1)
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#define False (0)
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#define CVT(x) (((x) * 255) / ((1L<<16)-1))
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boolean Verbose = False;
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char *pname; /* program name (used for error messages) */
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void
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error(s1, s2)
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char *s1,
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*s2;
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{
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fprintf(stderr, s1, pname, s2);
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exit(1);
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}
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void
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usage()
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{
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error("usage: %s -[vq] TIFFfile [rasterfile]\n", NULL);
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}
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main(argc, argv)
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int argc;
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char *argv[];
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{
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char *inf = NULL;
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char *outf = NULL;
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FILE *fp;
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long width,
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height;
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int depth,
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numcolors;
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register TIFF *tif;
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TIFFDirectory *td;
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register u_char *inp,
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*outp;
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register int col,
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i;
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register long row;
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u_char *Map = NULL;
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u_char *buf;
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short bitspersample;
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short samplesperpixel;
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short photometric;
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u_short *redcolormap,
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*bluecolormap,
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*greencolormap;
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Pixrect *pix; /* The Sun Pixrect */
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colormap_t Colormap; /* The Pixrect Colormap */
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u_char red[256],
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green[256],
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blue[256];
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setbuf(stderr, NULL);
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pname = argv[0];
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while (--argc) {
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if ((++argv)[0][0] == '-')
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switch (argv[0][1]) {
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case 'v':
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Verbose = True;
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break;
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case 'q':
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usage();
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break;
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default:
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fprintf(stderr, "%s: illegal option -%c.\n", pname,
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argv[0][1]);
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exit(1);
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}
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else if (inf == NULL)
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inf = argv[0];
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else if (outf == NULL)
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outf = argv[0];
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else
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usage();
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}
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if (inf == NULL)
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error("%s: can't read input file from a stream.\n", NULL);
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if (Verbose)
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fprintf(stderr, "Reading %s...", inf);
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tif = TIFFOpen(inf, "r");
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if (tif == NULL)
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error("%s: error opening TIFF file %s", inf);
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if (Verbose)
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TIFFPrintDirectory(tif, stderr, True, False, False);
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TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &bitspersample);
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if (bitspersample > 8)
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error("%s: can't handle more than 8-bits per sample\n", NULL);
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TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
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switch (samplesperpixel) {
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case 1:
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if (bitspersample == 1)
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depth = 1;
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else
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depth = 8;
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break;
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case 3:
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case 4:
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depth = 24;
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break;
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default:
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error("%s: only handle 1-channel gray scale or 3-channel color\n");
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}
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TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
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TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
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if (Verbose)
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fprintf(stderr, "%dx%dx%d image, ", width, height, depth);
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if (Verbose)
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fprintf(stderr, "%d bits/sample, %d samples/pixel, ",
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bitspersample, samplesperpixel);
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pix = mem_create(width, height, depth);
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if (pix == (Pixrect *) NULL)
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error("%s: can't allocate memory for output pixrect...\n", NULL);
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numcolors = (1 << bitspersample);
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TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric);
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if (numcolors == 2) {
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if (Verbose)
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fprintf(stderr, "monochrome ");
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Colormap.type = RMT_NONE;
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Colormap.length = 0;
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Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = NULL;
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} else {
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switch (photometric) {
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case PHOTOMETRIC_MINISBLACK:
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if (Verbose)
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fprintf(stderr, "%d graylevels (min=black), ", numcolors);
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Map = (u_char *) malloc(numcolors * sizeof(u_char));
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for (i = 0; i < numcolors; i++)
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Map[i] = (255 * i) / numcolors;
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Colormap.type = RMT_EQUAL_RGB;
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Colormap.length = numcolors;
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Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = Map;
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break;
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case PHOTOMETRIC_MINISWHITE:
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if (Verbose)
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fprintf(stderr, "%d graylevels (min=white), ", numcolors);
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Map = (u_char *) malloc(numcolors * sizeof(u_char));
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for (i = 0; i < numcolors; i++)
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Map[i] = 255 - ((255 * i) / numcolors);
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Colormap.type = RMT_EQUAL_RGB;
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Colormap.length = numcolors;
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Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = Map;
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break;
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case PHOTOMETRIC_RGB:
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if (Verbose)
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fprintf(stderr, "truecolor ");
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Colormap.type = RMT_NONE;
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Colormap.length = 0;
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Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = NULL;
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break;
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case PHOTOMETRIC_PALETTE:
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if (Verbose)
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fprintf(stderr, "colormapped ");
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Colormap.type = RMT_EQUAL_RGB;
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Colormap.length = numcolors;
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memset(red, 0, sizeof(red));
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memset(green, 0, sizeof(green));
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memset(blue, 0, sizeof(blue));
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TIFFGetField(tif, TIFFTAG_COLORMAP,
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&redcolormap, &greencolormap, &bluecolormap);
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for (i = 0; i < numcolors; i++) {
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red[i] = (u_char) CVT(redcolormap[i]);
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green[i] = (u_char) CVT(greencolormap[i]);
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blue[i] = (u_char) CVT(bluecolormap[i]);
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}
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Colormap.map[0] = red;
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Colormap.map[1] = green;
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Colormap.map[2] = blue;
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break;
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case PHOTOMETRIC_MASK:
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error("%s: Don't know how to handle PHOTOMETRIC_MASK\n");
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break;
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case PHOTOMETRIC_DEPTH:
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error("%s: Don't know how to handle PHOTOMETRIC_DEPTH\n");
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break;
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default:
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error("%s: unknown photometric (cmap): %d\n", photometric);
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}
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}
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buf = (u_char *) malloc(TIFFScanlineSize(tif));
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if (buf == NULL)
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error("%s: can't allocate memory for scanline buffer...\n", NULL);
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for (row = 0; row < height; row++) {
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if (TIFFReadScanline(tif, buf, row, 0) < 0)
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error("%s: bad data read on line: %d\n", row);
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inp = buf;
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outp = (u_char *) mprd_addr(mpr_d(pix), 0, row);
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switch (photometric) {
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case PHOTOMETRIC_RGB:
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if (samplesperpixel == 4)
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for (col = 0; col < width; col++) {
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*outp++ = *inp++; /* Blue */
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*outp++ = *inp++; /* Green */
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*outp++ = *inp++; /* Red */
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inp++; /* skip alpha channel */
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}
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else
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for (col = 0; col < width; col++) {
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*outp++ = *inp++; /* Blue */
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*outp++ = *inp++; /* Green */
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*outp++ = *inp++; /* Red */
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}
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break;
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case PHOTOMETRIC_MINISWHITE:
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case PHOTOMETRIC_MINISBLACK:
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switch (bitspersample) {
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case 1:
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for (col = 0; col < ((width + 7) / 8); col++)
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*outp++ = *inp++;
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break;
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case 2:
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for (col = 0; col < ((width + 3) / 4); col++) {
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*outp++ = (*inp >> 6) & 3;
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*outp++ = (*inp >> 4) & 3;
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*outp++ = (*inp >> 2) & 3;
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*outp++ = *inp++ & 3;
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}
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break;
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case 4:
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for (col = 0; col < width / 2; col++) {
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*outp++ = *inp >> 4;
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*outp++ = *inp++ & 0xf;
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}
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break;
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case 8:
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for (col = 0; col < width; col++)
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*outp++ = *inp++;
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break;
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default:
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error("%s: bad bits/sample: %d\n", bitspersample);
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}
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break;
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case PHOTOMETRIC_PALETTE:
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memcpy(outp, inp, width);
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break;
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default:
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error("%s: unknown photometric (write): %d\n", photometric);
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}
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}
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free((char *) buf);
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if (Verbose)
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fprintf(stderr, "done.\n");
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if (outf == NULL || strcmp(outf, "Standard Output") == 0) {
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outf = "Standard Output";
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fp = stdout;
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} else {
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if (!(fp = fopen(outf, "w")))
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error("%s: %s couldn't be opened for writing.\n", outf);
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}
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if (Verbose)
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fprintf(stderr, "Writing rasterfile in %s...", outf);
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if (pr_dump(pix, fp, &Colormap, RT_BYTE_ENCODED, 0) == PIX_ERR)
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error("%s: error writing Sun Rasterfile: %s\n", outf);
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if (Verbose)
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fprintf(stderr, "done.\n");
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pr_destroy(pix);
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if (fp != stdout)
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fclose(fp);
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exit(0);
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}
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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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