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#ifndef lint |
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static const char RCSid[] = "$Id: ra_im.c,v 2.4 2004/03/28 20:33:14 schorsch Exp $"; |
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#endif |
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/* |
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* ra_im.c - convert Radiance picture to imagetools raw format. |
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* |
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* 9/16/88 |
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*/ |
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|
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#include <stdio.h> |
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|
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#include "rtprocess.h" |
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|
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#define PCOMM "pvalue -h -b -db" |
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|
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#define MINVAL 1 |
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#define MAXVAL 252 |
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|
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extern FILE *freopen(); |
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|
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|
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int |
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main( |
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int argc, |
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char *argv[] |
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) |
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{ |
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register int c; |
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register FILE *fp; |
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|
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if (argc > 3) { |
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fputs("Usage: ", stderr); |
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fputs(argv[0], stderr); |
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fputs(" [infile [outfile]]\n", stderr); |
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exit(1); |
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} |
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if (argc > 1 && freopen(argv[1], "r", stdin) == NULL) { |
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perror(argv[1]); |
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exit(1); |
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} |
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if (argc > 2 && freopen(argv[2], "w", stdout) == NULL) { |
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perror(argv[2]); |
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exit(1); |
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} |
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if ((fp = popen(PCOMM, "r")) == NULL) { |
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perror(argv[0]); |
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exit(1); |
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} |
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while ((c = getc(fp)) != EOF) { |
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if (c < MINVAL) |
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putc(MINVAL, stdout); |
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else if (c > MAXVAL) |
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putc(MAXVAL, stdout); |
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else |
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putc(c, stdout); |
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} |
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exit(pclose(fp)); |
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} |
