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/* Copyright (c) 1995 Regents of the University of California */ |
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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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#define RG_ORIG 02 /* original color region */ |
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#define RG_CORR 04 /* corrected color region */ |
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|
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int scanning = 1; /* scanned input (or recorded output)? */ |
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|
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int xmax, ymax; /* input image dimensions */ |
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int bounds[4][2]; /* image coordinates of chart corners */ |
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double imgxfm[3][3]; /* coordinate transformation matrix */ |
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long gmtflags = 0; /* flags of out-of-gamut colors */ |
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|
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COLOR bramp[NMBNEU][2]; /* brightness ramp (per primary) */ |
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double solmat[3][3]; /* color mapping matrix */ |
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COLORMAT solmat; /* color mapping matrix */ |
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COLOR colmin, colmax; /* gamut limits */ |
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FILE *debugfp = NULL; /* debug output picture */ |
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char *progname; |
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int argc; |
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char **argv; |
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{ |
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int inpispic = 1; |
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int i; |
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progname = argv[0]; |
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bounds[2][1] = atoi(argv[++i]); |
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bounds[3][0] = atoi(argv[++i]); |
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bounds[3][1] = atoi(argv[++i]); |
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inpispic = 2; |
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scanning = 2; |
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break; |
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case 'c': /* color input */ |
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inpispic = 0; |
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scanning = 0; |
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break; |
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default: |
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goto userr; |
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} |
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/* open files */ |
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if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
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perror(argv[1]); |
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perror(argv[i]); |
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exit(1); |
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} |
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if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
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perror(argv[2]); |
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perror(argv[i+1]); |
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exit(1); |
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} |
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if (inpispic) { /* load input picture header */ |
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if (scanning) { /* load input picture header */ |
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#ifdef MSDOS |
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setmode(fileno(stdin), O_BINARY); |
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#endif |
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xmax = 512; |
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ymax = 2*512/3; |
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} |
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if (inpispic != 2) { /* use default boundaries */ |
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if (scanning != 2) { /* use default boundaries */ |
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bounds[0][0] = bounds[2][0] = .029*xmax + .5; |
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bounds[0][1] = bounds[1][1] = .956*ymax + .5; |
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bounds[1][0] = bounds[3][0] = .971*xmax + .5; |
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bounds[2][1] = bounds[3][1] = .056*ymax + .5; |
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} |
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init(); /* initialize */ |
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if (inpispic) /* get picture colors */ |
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if (scanning) /* get picture colors */ |
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getpicture(); |
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else |
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getcolors(); |
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compute(); /* compute color mapping */ |
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/* print comment */ |
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printf("{ Color correction file computed by:\n\t"); |
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printf("{\n\tColor correction file computed by:\n\t\t"); |
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printargs(argc, argv, stdout); |
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printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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if (!scanning) |
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printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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printf("}\n"); |
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putmapping(); /* put out color mapping */ |
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if (debugfp != NULL) /* put out debug picture */ |
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if (inpispic) |
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if (scanning) |
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picdebug(); |
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else |
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clrdebug(); |
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fgetval(stdin, 'f', &xyYin[0]) != 1 || |
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fgetval(stdin, 'f', &xyYin[1]) != 1 || |
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fgetval(stdin, 'f', &xyYin[2]) != 1 || |
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xyYin[0] < 0. | xyYin[0] > 1. | |
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xyYin[1] < 0. | xyYin[1] > 1.) { |
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xyYin[0] < 0. | xyYin[1] < 0. || |
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xyYin[0] + xyYin[1] > 1.) { |
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fprintf(stderr, "%s: bad color input data\n", |
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progname); |
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exit(1); |
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COLOR clrin[24], clrout[24]; |
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long cflags; |
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COLOR ctmp; |
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register int i, j, n; |
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register int i, n; |
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/* did we get what we need? */ |
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if ((inpflags & REQFLGS) != REQFLGS) { |
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fprintf(stderr, "%s: missing required input colors\n", |
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copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
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copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
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} |
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/* compute color space gamut */ |
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if (scanning) { |
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copycolor(colmin, cblack); |
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copycolor(colmax, cwhite); |
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} else |
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for (i = 0; i < 3; i++) { |
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colval(colmin,i) = colval(bramp[0][0],i) - |
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colval(bramp[0][1],i) * |
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(colval(bramp[1][0],i)-colval(bramp[0][0],i)) / |
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(colval(bramp[1][1],i)-colval(bramp[1][0],i)); |
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colval(colmax,i) = colval(bramp[NMBNEU-2][0],i) + |
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(1.-colval(bramp[NMBNEU-2][1],i)) * |
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(colval(bramp[NMBNEU-1][0],i) - |
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colval(bramp[NMBNEU-2][0],i)) / |
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(colval(bramp[NMBNEU-1][1],i) - |
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colval(bramp[NMBNEU-2][1],i)); |
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} |
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/* compute color mapping */ |
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do { |
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cflags = inpflags & ~gmtflags; |
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compsoln(clrin, clrout, n); |
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/* check out-of-gamut colors */ |
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for (i = 0; i < 24; i++) |
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if (cflags & 1L<<i) { |
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cresp(ctmp, mbRGB[i]); |
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for (j = 0; j < 3; j++) |
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if (colval(ctmp,j) <= 0. || |
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colval(ctmp,j) >= 1.) { |
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gmtflags |= 1L<<i; |
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break; |
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} |
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} |
431 |
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if (cflags & 1L<<i && cvtcolor(ctmp, mbRGB[i])) |
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gmtflags |= 1L<<i; |
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} while (cflags & gmtflags); |
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if (gmtflags & MODFLGS) |
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fprintf(stderr, |
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for (i = 0; i < NMBNEU; i++) |
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printf(",%g", colval(bramp[i][1],j)); |
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printf(");\n"); |
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printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
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printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
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cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
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cchar[j], cchar[j]); |
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printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
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printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
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cchar[j], cchar[j], cchar[j], |
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cchar[j], cchar[j], cchar[j]); |
459 |
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printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
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cchar[j], scanning?'n':'o', cchar[j], |
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cchar[j], cchar[j], cchar[j], cchar[j]); |
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printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
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cchar[j], cchar[j], cchar[j], |
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cchar[j], cchar[j]); |
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cchar[j], cchar[j], cchar[j], cchar[j]); |
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} |
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/* print color mapping */ |
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printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
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solmat[0][0], solmat[0][1], solmat[0][2]); |
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printf("go = %g*rn + %g*gn + %g*bn ;\n", |
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solmat[1][0], solmat[1][1], solmat[1][2]); |
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printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
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solmat[2][0], solmat[2][1], solmat[2][2]); |
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if (scanning) { |
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printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
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printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
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solmat[0][0], solmat[0][1], solmat[0][2]); |
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printf("go = %g*rn + %g*gn + %g*bn ;\n", |
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solmat[1][0], solmat[1][1], solmat[1][2]); |
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printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
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solmat[2][0], solmat[2][1], solmat[2][2]); |
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} else { |
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printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
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printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
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solmat[0][0], solmat[0][1], solmat[0][2]); |
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printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
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solmat[1][0], solmat[1][1], solmat[1][2]); |
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printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
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solmat[2][0], solmat[2][1], solmat[2][2]); |
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} |
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} |
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} |
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int |
550 |
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cvtcolor(cout, cin) /* convert color according to our mapping */ |
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COLOR cout, cin; |
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{ |
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COLOR ctmp; |
554 |
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int clipped; |
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556 |
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bresp(ctmp, cin); |
557 |
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cresp(cout, ctmp); |
558 |
< |
if (colval(cout,RED) < 0.) |
559 |
< |
colval(cout,RED) = 0.; |
560 |
< |
if (colval(cout,GRN) < 0.) |
561 |
< |
colval(cout,GRN) = 0.; |
562 |
< |
if (colval(cout,BLU) < 0.) |
563 |
< |
colval(cout,BLU) = 0.; |
556 |
> |
if (scanning) { |
557 |
> |
bresp(ctmp, cin); |
558 |
> |
clipped = cresp(cout, ctmp); |
559 |
> |
} else { |
560 |
> |
clipped = cresp(ctmp, cin); |
561 |
> |
bresp(cout, ctmp); |
562 |
> |
} |
563 |
> |
return(clipped); |
564 |
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} |
565 |
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566 |
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567 |
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int |
568 |
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cresp(cout, cin) /* transform color according to matrix */ |
569 |
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COLOR cout, cin; |
570 |
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{ |
571 |
< |
double r, g, b; |
572 |
< |
|
543 |
< |
r = colval(cin,0)*solmat[0][0] + colval(cin,1)*solmat[0][1] |
544 |
< |
+ colval(cin,2)*solmat[0][2]; |
545 |
< |
g = colval(cin,0)*solmat[1][0] + colval(cin,1)*solmat[1][1] |
546 |
< |
+ colval(cin,2)*solmat[1][2]; |
547 |
< |
b = colval(cin,0)*solmat[2][0] + colval(cin,1)*solmat[2][1] |
548 |
< |
+ colval(cin,2)*solmat[2][2]; |
549 |
< |
setcolor(cout, r, g, b); |
571 |
> |
colortrans(cout, solmat, cin); |
572 |
> |
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
573 |
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} |
574 |
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575 |
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584 |
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ctmp[0] = xyYin[0] * d; |
585 |
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ctmp[1] = xyYin[2]; |
586 |
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ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
587 |
< |
cie_rgb(rgbout, ctmp); |
587 |
> |
/* allow negative values */ |
588 |
> |
colortrans(rgbout, xyz2rgbmat, ctmp); |
589 |
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} |
590 |
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591 |
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622 |
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for (x = 0; x < xmax; x++) { |
623 |
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rg = chartndx(x, y, &i); |
624 |
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if (rg == RG_CENT) { |
625 |
< |
if (!(1L<<i & gmtflags) || (x+y)&07) |
625 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) { |
626 |
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copycolor(scan[x], mbRGB[i]); |
627 |
< |
else |
627 |
> |
clipgamut(scan[x], bright(scan[x]), |
628 |
> |
CGAMUT, cblack, cwhite); |
629 |
> |
} else |
630 |
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copycolor(scan[x], blkcol); |
631 |
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} else if (rg == RG_CORR) |
632 |
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cvtcolor(scan[x], scan[x]); |
650 |
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static COLR blkclr = BLKCOLR; |
651 |
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COLR mbclr[24], cvclr[24], orclr[24]; |
652 |
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COLR *scan; |
653 |
< |
COLOR ctmp; |
653 |
> |
COLOR ctmp, ct2; |
654 |
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int y, i; |
655 |
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register int x, rg; |
656 |
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/* convert colors */ |
657 |
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for (i = 0; i < 24; i++) { |
658 |
< |
setcolr(mbclr[i], colval(mbRGB[i],RED), |
659 |
< |
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
658 |
> |
copycolor(ctmp, mbRGB[i]); |
659 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
660 |
> |
setcolr(mbclr[i], colval(ctmp,RED), |
661 |
> |
colval(ctmp,GRN), colval(ctmp,BLU)); |
662 |
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if (inpflags & 1L<<i) { |
663 |
< |
setcolr(orclr[i], colval(inpRGB[i],RED), |
664 |
< |
colval(inpRGB[i],GRN), |
665 |
< |
colval(inpRGB[i],BLU)); |
638 |
< |
cvtcolor(ctmp, inpRGB[i]); |
639 |
< |
setcolr(cvclr[i], colval(ctmp,RED), |
663 |
> |
copycolor(ctmp, inpRGB[i]); |
664 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
665 |
> |
setcolr(orclr[i], colval(ctmp,RED), |
666 |
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colval(ctmp,GRN), colval(ctmp,BLU)); |
667 |
+ |
bresp(ctmp, inpRGB[i]); |
668 |
+ |
colortrans(ct2, solmat, ctmp); |
669 |
+ |
clipgamut(ct2, bright(ct2), CGAMUT, cblack, cwhite); |
670 |
+ |
setcolr(cvclr[i], colval(ct2,RED), |
671 |
+ |
colval(ct2,GRN), colval(ct2,BLU)); |
672 |
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} |
673 |
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} |
674 |
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/* allocate scanline */ |