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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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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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/* |
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* program to convert from RADIANCE RLE to flat format |
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*/ |
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|
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#include <stdio.h> |
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|
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#include "color.h" |
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|
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int bradj = 0; /* brightness adjustment */ |
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|
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int doflat = 1; /* produce flat file */ |
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|
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char *progname; |
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|
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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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int i; |
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|
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progname = argv[0]; |
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|
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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 'r': |
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doflat = !doflat; |
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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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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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|
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if (i < argc-2) |
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goto userr; |
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
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fprintf(stderr, "%s: can't open input \"%s\"\n", |
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progname, argv[i]); |
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exit(1); |
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} |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
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fprintf(stderr, "can't open output \"%s\"\n", |
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progname, argv[i+1]); |
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exit(1); |
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} |
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transfer(); |
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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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|
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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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|
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|
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transfer() /* transfer Radiance picture */ |
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{ |
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extern double pow(); |
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int xmax, ymax; |
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COLR *scanin; |
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register int x; |
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int y; |
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/* get header info. */ |
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if (checkheader(stdin, COLRFMT, stdout) < 0 || |
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fgetresolu(&xmax, &ymax, stdin) != (YMAJOR|YDECR)) |
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quiterr("bad picture format"); |
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if (bradj) |
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fputexpos(pow(2.0, (double)bradj), stdout); |
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if (!doflat) { |
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fputformat(COLRFMT, stdout); |
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printf("%s -r\n\n", progname); |
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} else |
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printf("%s\n\n", progname); |
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fputresolu(YMAJOR|YDECR, xmax, ymax, stdout); |
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/* allocate scanline */ |
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scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
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if (scanin == NULL) |
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quiterr("out of memory in transfer"); |
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/* convert image */ |
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for (y = ymax-1; y >= 0; y--) { |
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if (freadcolrs(scanin, xmax, stdin) < 0) |
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quiterr("error reading input picture"); |
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if (bradj) |
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shiftcolrs(scanin, xmax, bradj); |
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if (doflat) |
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fwrite((char *)scanin, sizeof(COLR), xmax, stdout); |
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else |
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fwritecolrs(scanin, xmax, stdout); |
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if (ferror(stdout)) |
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quiterr("error writing rasterfile"); |
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} |
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/* free scanline */ |
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free((char *)scanin); |
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} |
