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/* Copyright (c) 1997 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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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Program to convert between RADIANCE RGBE and XYZE formats |
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* Added white-balance adjustment 10/01 (GW). |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <math.h> |
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#include <time.h> |
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#include "platform.h" |
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#include "color.h" |
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#include "resolu.h" |
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#ifdef MSDOS |
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#include <fcntl.h> |
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#endif |
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extern char *malloc(), *strcpy(); |
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int rgbinp = -1; /* input is RGBE? */ |
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int rgbout = 0; /* output should be RGBE? */ |
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RGBPRIMS inprims = STDPRIMS; /* input primaries */ |
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RGBPRIMS outprims = STDPRIMS; /* output primaries */ |
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double expcomp = 1.0; /* exposure compensation */ |
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int doflat = -1; /* produce flat file? */ |
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char *progname; |
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static gethfunc headline; |
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static void quiterr(char *err); |
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static void convert(void); |
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headline(s) /* process header line */ |
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char *s; |
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static int |
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headline( /* process header line */ |
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char *s, |
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void *p |
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) |
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{ |
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char fmt[32]; |
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rgbinp = 0; |
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else |
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rgbinp = -2; |
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return; /* don't echo */ |
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return(0); /* don't echo */ |
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} |
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if (isprims(s)) { /* get input primaries */ |
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primsval(inprims, s); |
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return; /* don't echo */ |
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return(0); /* don't echo */ |
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} |
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/* should I grok colcorr also? */ |
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fputs(s, stdout); |
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return(fputs(s, stdout)); |
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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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int |
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main(int argc, char *argv[]) |
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{ |
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int i; |
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#ifdef MSDOS |
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extern int _fmode; |
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_fmode = O_BINARY; |
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setmode(fileno(stdin), O_BINARY); |
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setmode(fileno(stdout), O_BINARY); |
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#endif |
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SET_DEFAULT_BINARY(); |
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SET_FILE_BINARY(stdin); |
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SET_FILE_BINARY(stdout); |
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progname = argv[0]; |
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for (i = 1; i < argc; i++) |
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if (rgbinp == -1) |
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rgbinp = !rgbout; |
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printargs(argc, argv, stdout); /* add to header */ |
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if (expcomp < 0.99 || expcomp > 1.01) |
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fputexpos(expcomp, stdout); |
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convert(); /* convert picture */ |
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exit(0); |
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userr: |
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} |
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quiterr(err) /* print message and exit */ |
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char *err; |
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static void |
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quiterr( /* print message and exit */ |
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char *err |
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) |
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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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} |
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convert() /* convert to XYZE or RGBE picture */ |
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static void |
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convert(void) /* convert to XYZE or RGBE picture */ |
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{ |
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int order; |
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int xmax, ymax; |
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COLORMAT xfm; |
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register COLOR *scanin; |
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register COLR *scanout; |
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double ourexp = expcomp; |
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int y; |
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register int x; |
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/* compute transform */ |
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if (rgbout) { |
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double mult; |
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if (rgbinp) { /* RGBE -> RGBE */ |
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comprgb2rgbmat(xfm, inprims, outprims); |
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mult = expcomp; |
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comprgb2rgbWBmat(xfm, inprims, outprims); |
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} else { /* XYZE -> RGBE */ |
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compxyz2rgbmat(xfm, outprims); |
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mult = expcomp/WHTEFFICACY; |
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compxyz2rgbWBmat(xfm, outprims); |
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ourexp *= WHTEFFICACY; |
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} |
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for (y = 0; y < 3; y++) |
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for (x = 0; x < 3; x++) |
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xfm[y][x] *= mult; |
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} else { |
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if (rgbinp) { /* RGBE -> XYZE */ |
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comprgb2xyzmat(xfm, inprims); |
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for (y = 0; y < 3; y++) |
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for (x = 0; x < 3; x++) |
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xfm[y][x] *= WHTEFFICACY*expcomp; |
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comprgb2xyzWBmat(xfm, inprims); |
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ourexp /= WHTEFFICACY; |
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} else { /* XYZE -> XYZE */ |
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for (y = 0; y < 3; y++) |
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for (x = 0; x < 3; x++) |
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xfm[y][x] = x==y ? expcomp : 0.; |
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xfm[y][x] = x==y ? 1. : 0.; |
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} |
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} |
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for (y = 0; y < 3; y++) |
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for (x = 0; x < 3; x++) |
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xfm[y][x] *= expcomp; |
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/* get input resolution */ |
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if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0) |
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quiterr("bad picture format"); |
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/* complete output header */ |
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if (ourexp < 0.99 || ourexp > 1.01) |
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fputexpos(ourexp, stdout); |
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if (rgbout) { |
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fputprims(outprims, stdout); |
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fputformat(COLRFMT, stdout); |
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quiterr("error writing output picture"); |
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} |
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/* free scanline */ |
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free((char *)scanin); |
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free((void *)scanin); |
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if (scanout != NULL) |
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free((char *)scanout); |
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free((void *)scanout); |
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} |
