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/* Copyright (c) 1988 Regents of the University of California */ |
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/* 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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* prot.c - program to rotate picture file 90 degrees clockwise. |
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* |
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#include "color.h" |
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#include "resolu.h" |
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int order; /* input scanline order */ |
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int xres, yres; /* input resolution */ |
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double inpaspect = 1.0; /* input aspect ratio */ |
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int correctorder = 0; /* order correction? */ |
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char buf[1<<20]; /* output buffer */ |
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int nrows; /* number of rows output at once */ |
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int wrongformat = 0; |
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#define scanbar ((COLR *)buf) |
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char *progname; |
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#define neworder() (correctorder ? order : \ |
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(order^(order&YMAJOR?YDECR:XDECR)^YMAJOR)) |
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headline(s) /* process line from header */ |
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char *s; |
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{ |
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char fmt[32]; |
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fputs(s, stdout); |
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if (isaspect(s)) |
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inpaspect *= aspectval(s); |
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else if (isformat(s)) { |
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formatval(fmt, s); |
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wrongformat = strcmp(fmt, COLRFMT); |
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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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progname = argv[0]; |
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if (argc > 2 && !strcmp(argv[1], "-c")) { |
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correctorder++; |
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argc--; argv++; |
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} |
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if (argc != 2 && argc != 3) { |
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fprintf(stderr, "Usage: %s infile [outfile]\n", progname); |
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fprintf(stderr, "Usage: %s [-c] infile [outfile]\n", progname); |
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exit(1); |
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} |
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if ((fin = fopen(argv[1], "r")) == NULL) { |
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exit(1); |
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} |
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/* transfer header */ |
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getheader(fin, headline, NULL); |
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if (wrongformat) { |
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fprintf(stderr, "%s: wrong picture format\n", progname); |
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if (checkheader(fin, COLRFMT, stdout) < 0) { |
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fprintf(stderr, "%s: not a Radiance picture\n", progname); |
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exit(1); |
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} |
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/* add new header info. */ |
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if (inpaspect < .99 || inpaspect > 1.01) |
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fputaspect(1./inpaspect/inpaspect, stdout); |
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printf("%s\n\n", progname); |
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/* get picture size */ |
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if (fgetresolu(&xres, &yres, fin) != (YMAJOR|YDECR)) { |
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if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
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fprintf(stderr, "%s: bad picture size\n", progname); |
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exit(1); |
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} |
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/* write new picture size */ |
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fputresolu(YMAJOR|YDECR, yres, xres, stdout); |
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fputresolu(neworder(), yres, xres, stdout); |
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/* compute buffer capacity */ |
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nrows = sizeof(buf)/sizeof(COLR)/yres; |
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rotate(fin); /* rotate the image */ |
