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/* Copyright (c) 1995 Regents of the University of California */ |
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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static char SCCSid[] = "$SunId$ SGI"; |
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#endif |
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/* |
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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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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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} else { /* XYZE -> RGBE */ |
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compxyz2rgbmat(xfm, outprims); |
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mult = expcomp/WHTEFFICACY; |
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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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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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for (y = 0; y < ymax; y++) { |
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if (freadscan(scanin, xmax, stdin) < 0) |
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quiterr("error reading input picture"); |
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for (x = 0; x < xmax; x++) |
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for (x = 0; x < xmax; x++) { |
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colortrans(scanin[x], xfm, scanin[x]); |
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if (rgbout) |
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clipgamut(scanin[x], bright(scanin[x]), |
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CGAMUT_LOWER, cblack, cwhite); |
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} |
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if (scanout != NULL) { |
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for (x = 0; x < xmax; x++) |
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setcolr(scanout[x], colval(scanin[x],RED), |
