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greg |
1.1 |
/* Copyright (c) 1991 Regents of the University of California */
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#ifndef lint
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static char SCCSid[] = "$SunId$ LBL";
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#endif
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/*
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* program to convert between RADIANCE and 24-bit TIFF files.
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*/
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#include <stdio.h>
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#include "tiffio.h"
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#include "color.h"
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extern double atof();
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extern char *malloc(), *realloc();
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double gamma = 2.2; /* gamma correction */
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int bradj = 0; /* brightness adjustment */
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char *progname;
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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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int reverse = 0;
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int i;
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progname = argv[0];
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for (i = 1; i < argc; i++)
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if (argv[i][0] == '-')
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switch (argv[i][1]) {
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case 'g':
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gamma = atof(argv[++i]);
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break;
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case 'e':
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
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goto userr;
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bradj = atoi(argv[++i]);
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break;
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case 'r':
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reverse = !reverse;
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break;
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case '\0':
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goto doneopts;
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default:
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goto userr;
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}
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else
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break;
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doneopts:
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setcolrgam(gamma);
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if (reverse)
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if (i != argc-2 && i != argc-1)
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goto userr;
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else
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tiff2ra(argv[i], argv[i+1]);
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else
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if (i != argc-2)
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goto userr;
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else
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ra2tiff(argv[i], argv[i+1]);
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exit(0);
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userr:
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fprintf(stderr, "Usage: %s [-r][-e +/-stops] input output\n",
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progname);
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exit(1);
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}
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quiterr(err) /* print message and exit */
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char *err;
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{
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if (err != NULL) {
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fprintf(stderr, "%s: %s\n", progname, err);
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exit(1);
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}
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exit(0);
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}
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tiff2ra(inpf, outf) /* convert TIFF file to Radiance picture */
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char *inpf, *outf;
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{
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unsigned long xmax, ymax;
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TIFF *tif;
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unsigned short pconfig;
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unsigned short hi;
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register BYTE *scanin;
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register COLR *scanout;
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register int x;
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int y;
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/* open/check TIFF file */
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if ((tif = TIFFOpen(inpf, "r")) == NULL)
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quiterr("cannot open TIFF input");
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if (!TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || hi != 3)
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quiterr("unsupported samples per pixel");
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if (!TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &hi) || hi != 8)
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quiterr("unsupported bits per sample");
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if (TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &hi) && hi != 2)
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quiterr("unsupported photometric interpretation");
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if (!TIFFGetField(tif, TIFFTAG_PLANARCONFIG, &pconfig) ||
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(pconfig != 1 && pconfig != 2))
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quiterr("unsupported planar configuration");
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if (!TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &xmax) ||
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!TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &ymax))
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quiterr("unknown input image resolution");
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/* allocate scanlines */
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scanin = (BYTE *)malloc(TIFFScanlineSize(tif));
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scanout = (COLR *)malloc(xmax*sizeof(COLR));
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if (scanin == NULL || scanout == NULL)
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quiterr("out of memory in tiff2ra");
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/* open output and write header */
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if (outf != NULL && strcmp(outf, "-") &&
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freopen(outf, "w", stdout) == NULL)
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quiterr("cannot open Radiance output file");
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fputs(progname, stdout);
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if (bradj)
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printf(" -e %+d", bradj);
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fputs(" -r\n", stdout);
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fputformat(COLRFMT, stdout);
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putchar('\n');
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fputresolu(YDECR|YMAJOR, xmax, ymax, stdout);
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/* convert image */
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for (y = 0; y < ymax; y++) {
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if (pconfig == 1) {
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if (TIFFReadScanline(tif, scanin, y, 0) < 0)
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goto readerr;
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for (x = 0; x < xmax; x++) {
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scanout[x][RED] = scanin[3*x];
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scanout[x][GRN] = scanin[3*x+1];
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scanout[x][BLU] = scanin[3*x+2];
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}
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} else {
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if (TIFFReadScanline(tif, scanin, y, 0) < 0)
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goto readerr;
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for (x = 0; x < xmax; x++)
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scanout[x][RED] = scanin[x];
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if (TIFFReadScanline(tif, scanin, y, 1) < 0)
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goto readerr;
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for (x = 0; x < xmax; x++)
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scanout[x][GRN] = scanin[x];
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if (TIFFReadScanline(tif, scanin, y, 2) < 0)
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goto readerr;
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for (x = 0; x < xmax; x++)
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scanout[x][BLU] = scanin[x];
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}
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gambs_colrs(scanout, xmax);
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if (bradj)
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shiftcolrs(scanout, xmax, bradj);
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if (fwritecolrs(scanout, xmax, stdout) < 0)
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quiterr("error writing Radiance picture");
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}
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/* clean up */
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free((char *)scanin);
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free((char *)scanout);
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TIFFClose(tif);
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return;
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readerr:
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quiterr("error reading TIFF input");
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}
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ra2tiff(inpf, outf) /* convert Radiance file to 24-bit TIFF */
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char *inpf, *outf;
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{
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TIFF *tif;
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int xmax, ymax;
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BYTE *scanout;
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COLR *scanin;
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register int x;
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int y;
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/* open Radiance file */
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if (strcmp(inpf, "-") && freopen(inpf, "r", stdin) == NULL)
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quiterr("cannot open Radiance input file");
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greg |
1.2 |
if (checkheader(stdin, COLRFMT, NULL) < 0 ||
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fgetresolu(&xmax, &ymax, stdin) != (YDECR|YMAJOR))
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greg |
1.1 |
quiterr("bad Radiance picture");
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/* open TIFF file */
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if ((tif = TIFFOpen(outf, "w")) == NULL)
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quiterr("cannot open TIFF output");
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TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (unsigned long)xmax);
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TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (unsigned long)ymax);
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TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
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TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, 2);
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TIFFSetField(tif, TIFFTAG_PLANARCONFIG, 1);
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/* allocate scanlines */
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scanin = (COLR *)malloc(xmax*sizeof(COLR));
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scanout = (BYTE *)malloc(TIFFScanlineSize(tif));
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if (scanin == NULL || scanout == NULL)
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quiterr("out of memory in ra2tiff");
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/* convert image */
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for (y = 0; y < ymax; y++) {
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if (freadcolrs(scanin, xmax, stdin) < 0)
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quiterr("error reading Radiance picture");
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if (bradj)
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shiftcolrs(scanin, xmax, bradj);
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colrs_gambs(scanin, xmax);
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for (x = 0; x < xmax; x++) {
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scanout[3*x] = scanin[x][RED];
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scanout[3*x+1] = scanin[x][GRN];
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scanout[3*x+2] = scanin[x][BLU];
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}
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if (TIFFWriteScanline(tif, scanout, y, 0) < 0)
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quiterr("error writing TIFF output");
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}
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/* clean up */
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free((char *)scanin);
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free((char *)scanout);
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TIFFClose(tif);
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}
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