//--------------------------------------------------------------------------------- // // Little Color Management System // Copyright (c) 1998-2022 Marti Maria Saguer // // Permission is hereby granted, free of charge, to any person obtaining // a copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the Software // is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //--------------------------------------------------------------------------------- // #include "utils.h" int Verbose = 0; static char ProgramName[256] = ""; void FatalError(const char *frm, ...) { va_list args; va_start(args, frm); fprintf(stderr, "[%s fatal error]: ", ProgramName); vfprintf(stderr, frm, args); fprintf(stderr, "\n"); va_end(args); exit(1); } // Show errors to the end user (unless quiet option) static void MyErrorLogHandler(cmsContext ContextID, cmsUInt32Number ErrorCode, const char *Text) { if (Verbose >= 0) fprintf(stderr, "[%s]: %s\n", ProgramName, Text); UTILS_UNUSED_PARAMETER(ErrorCode); UTILS_UNUSED_PARAMETER(ContextID); } void InitUtils(cmsContext ContextID, const char* PName) { strncpy(ProgramName, PName, sizeof(ProgramName)); ProgramName[sizeof(ProgramName)-1] = 0; cmsSetLogErrorHandler(ContextID, MyErrorLogHandler); } // Virtual profiles are handled here. cmsHPROFILE OpenStockProfile(cmsContext ContextID, const char* File) { if (!File) return cmsCreate_sRGBProfile(ContextID); if (cmsstrcasecmp(File, "*Lab2") == 0) return cmsCreateLab2Profile(ContextID, NULL); if (cmsstrcasecmp(File, "*Lab4") == 0) return cmsCreateLab4Profile(ContextID, NULL); if (cmsstrcasecmp(File, "*Lab") == 0) return cmsCreateLab4Profile(ContextID, NULL); if (cmsstrcasecmp(File, "*LabD65") == 0) { cmsCIExyY D65xyY; cmsWhitePointFromTemp(ContextID, &D65xyY, 6504); return cmsCreateLab4Profile(ContextID, &D65xyY); } if (cmsstrcasecmp(File, "*XYZ") == 0) return cmsCreateXYZProfile(ContextID); if (cmsstrcasecmp(File, "*Gray22") == 0) { cmsToneCurve* Curve = cmsBuildGamma(ContextID, 2.2); cmsHPROFILE hProfile = cmsCreateGrayProfile(ContextID, cmsD50_xyY(ContextID), Curve); cmsFreeToneCurve(ContextID, Curve); return hProfile; } if (cmsstrcasecmp(File, "*Gray30") == 0) { cmsToneCurve* Curve = cmsBuildGamma(ContextID, 3.0); cmsHPROFILE hProfile = cmsCreateGrayProfile(ContextID, cmsD50_xyY(ContextID), Curve); cmsFreeToneCurve(ContextID, Curve); return hProfile; } if (cmsstrcasecmp(File, "*srgb") == 0) return cmsCreate_sRGBProfile(ContextID); if (cmsstrcasecmp(File, "*null") == 0) return cmsCreateNULLProfile(ContextID); if (cmsstrcasecmp(File, "*Lin2222") == 0) { cmsToneCurve* Gamma = cmsBuildGamma(0, 2.2); cmsToneCurve* Gamma4[4]; cmsHPROFILE hProfile; Gamma4[0] = Gamma4[1] = Gamma4[2] = Gamma4[3] = Gamma; hProfile = cmsCreateLinearizationDeviceLink(ContextID, cmsSigCmykData, Gamma4); cmsFreeToneCurve(ContextID, Gamma); return hProfile; } return cmsOpenProfileFromFile(ContextID, File, "r"); } // Help on available built-ins void PrintBuiltins(void) { fprintf(stderr, "\nBuilt-in profiles:\n\n"); fprintf(stderr, "\t*Lab2 -- D50-based v2 CIEL*a*b\n" "\t*Lab4 -- D50-based v4 CIEL*a*b\n" "\t*Lab -- D50-based v4 CIEL*a*b\n" "\t*XYZ -- CIE XYZ (PCS)\n" "\t*sRGB -- sRGB color space\n" "\t*Gray22 - Monochrome of Gamma 2.2\n" "\t*Gray30 - Monochrome of Gamma 3.0\n" "\t*null - Monochrome black for all input\n" "\t*Lin2222- CMYK linearization of gamma 2.2 on each channel\n\n"); } // Auxiliary for printing information on profile static void PrintInfo(cmsContext ContextID, cmsHPROFILE h, cmsInfoType Info) { char* text; int len; len = cmsGetProfileInfoASCII(ContextID, h, Info, "en", "US", NULL, 0); if (len == 0) return; text = (char*) malloc(len * sizeof(char)); if (text == NULL) return; cmsGetProfileInfoASCII(ContextID, h, Info, "en", "US", text, len); if (strlen(text) > 0) printf("%s\n", text); free(text); } // Displays the colorant table static void PrintColorantTable(cmsContext ContextID, cmsHPROFILE hInput, cmsTagSignature Sig, const char* Title) { cmsNAMEDCOLORLIST* list; int i, n; if (cmsIsTag(ContextID, hInput, Sig)) { printf("%s:\n", Title); list = (cmsNAMEDCOLORLIST*) cmsReadTag(ContextID, hInput, Sig); if (list == NULL) { printf("(Unavailable)\n"); return; } n = cmsNamedColorCount(ContextID, list); for (i=0; i < n; i++) { char Name[cmsMAX_PATH]; cmsNamedColorInfo(ContextID, list, i, Name, NULL, NULL, NULL, NULL); printf("\t%s\n", Name); } printf("\n"); } } void PrintProfileInformation(cmsContext ContextID, cmsHPROFILE hInput) { if (hInput == NULL) { fprintf(stderr, "*Wrong or corrupted profile*\n"); return; } PrintInfo(ContextID, hInput, cmsInfoDescription); PrintInfo(ContextID, hInput, cmsInfoManufacturer); PrintInfo(ContextID, hInput, cmsInfoModel); PrintInfo(ContextID, hInput, cmsInfoCopyright); if (Verbose > 2) { PrintColorantTable(ContextID, hInput, cmsSigColorantTableTag, "Input colorant table"); PrintColorantTable(ContextID, hInput, cmsSigColorantTableOutTag, "Input colorant out table"); } printf("\n"); } // ----------------------------------------------------------------------------- void PrintRenderingIntents(cmsContext ContextID) { cmsUInt32Number Codes[200]; char* Descriptions[200]; cmsUInt32Number n, i; fprintf(stderr, "-t rendering intent:\n\n"); n = cmsGetSupportedIntents(ContextID, 200, Codes, Descriptions); for (i=0; i < n; i++) { fprintf(stderr, "\t%u - %s\n", Codes[i], Descriptions[i]); } fprintf(stderr, "\n"); } // ------------------------------------------------------------------------------ cmsBool SaveMemoryBlock(const cmsUInt8Number* Buffer, cmsUInt32Number dwLen, const char* Filename) { FILE* out = fopen(Filename, "wb"); if (out == NULL) { FatalError("Cannot create '%s'", Filename); return FALSE; } if (fwrite(Buffer, 1, dwLen, out) != dwLen) { FatalError("Cannot write %ld bytes to %s", (long) dwLen, Filename); return FALSE; } if (fclose(out) != 0) { FatalError("Error flushing file '%s'", Filename); return FALSE; } return TRUE; } // ------------------------------------------------------------------------------ // Return a pixel type on depending on the number of channels int PixelTypeFromChanCount(int ColorChannels) { switch (ColorChannels) { case 1: return PT_GRAY; case 2: return PT_MCH2; case 3: return PT_MCH3; case 4: return PT_CMYK; case 5: return PT_MCH5; case 6: return PT_MCH6; case 7: return PT_MCH7; case 8: return PT_MCH8; case 9: return PT_MCH9; case 10: return PT_MCH10; case 11: return PT_MCH11; case 12: return PT_MCH12; case 13: return PT_MCH13; case 14: return PT_MCH14; case 15: return PT_MCH15; default: FatalError("What a weird separation of %d channels?!?!", ColorChannels); return -1; } } // ------------------------------------------------------------------------------ // Return number of channels of pixel type int ChanCountFromPixelType(int ColorChannels) { switch (ColorChannels) { case PT_GRAY: return 1; case PT_RGB: case PT_CMY: case PT_Lab: case PT_YUV: case PT_YCbCr: return 3; case PT_CMYK: return 4 ; case PT_MCH2: return 2 ; case PT_MCH3: return 3 ; case PT_MCH4: return 4 ; case PT_MCH5: return 5 ; case PT_MCH6: return 6 ; case PT_MCH7: return 7 ; case PT_MCH8: return 8 ; case PT_MCH9: return 9 ; case PT_MCH10: return 10; case PT_MCH11: return 11; case PT_MCH12: return 12; case PT_MCH13: return 12; case PT_MCH14: return 14; case PT_MCH15: return 15; default: FatalError("Unsupported color space of %d channels", ColorChannels); return -1; } }