static int WriteInputMatrixShaper(cmsIOHANDLER* m, cmsHPROFILE hProfile, cmsStage* Matrix, cmsStage* Shaper) { cmsColorSpaceSignature ColorSpace; int rc; cmsCIEXYZ BlackPointAdaptedToD50; ColorSpace = cmsGetColorSpace(hProfile); cmsDetectBlackPoint(&BlackPointAdaptedToD50, hProfile, INTENT_RELATIVE_COLORIMETRIC, 0); if (ColorSpace == cmsSigGrayData) { cmsToneCurve** ShaperCurve = _cmsStageGetPtrToCurveSet(Shaper); rc = EmitCIEBasedA(m, ShaperCurve[0], &BlackPointAdaptedToD50); } else if (ColorSpace == cmsSigRgbData) { rc = EmitCIEBasedABC(m, GetPtrToMatrix(Matrix), _cmsStageGetPtrToCurveSet(Shaper), &BlackPointAdaptedToD50); } else { cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Profile is not suitable for CSA. Unsupported colorspace."); return 0; } return rc; }
static int WriteInputMatrixShaper(cmsIOHANDLER* m, cmsHPROFILE hProfile, cmsStage* Matrix, cmsStage* Shaper) { cmsColorSpaceSignature ColorSpace; int rc; cmsCIEXYZ BlackPointAdaptedToD50; ColorSpace = cmsGetColorSpace(hProfile); cmsDetectBlackPoint(&BlackPointAdaptedToD50, hProfile, INTENT_RELATIVE_COLORIMETRIC, 0); if (ColorSpace == cmsSigGrayData) { cmsToneCurve** ShaperCurve = _cmsStageGetPtrToCurveSet(Shaper); rc = EmitCIEBasedA(m, ShaperCurve[0], &BlackPointAdaptedToD50); } else if (ColorSpace == cmsSigRgbData) { cmsMAT3 Mat; int i, j; memmove(&Mat, GetPtrToMatrix(Matrix), sizeof(Mat)); for (i=0; i < 3; i++) for (j=0; j < 3; j++) Mat.v[i].n[j] *= MAX_ENCODEABLE_XYZ; rc = EmitCIEBasedABC(m, (cmsFloat64Number *) &Mat, _cmsStageGetPtrToCurveSet(Shaper), &BlackPointAdaptedToD50); } else { cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Profile is not suitable for CSA. Unsupported colorspace."); return 0; } return rc; }
static int WriteInputLUT(cmsIOHANDLER* m, cmsHPROFILE hProfile, int Intent, cmsUInt32Number dwFlags) { cmsHPROFILE hLab; cmsHTRANSFORM xform; cmsUInt32Number nChannels; cmsUInt32Number InputFormat; int rc; cmsHPROFILE Profiles[2]; cmsCIEXYZ BlackPointAdaptedToD50; // Does create a device-link based transform. // The DeviceLink is next dumped as working CSA. InputFormat = cmsFormatterForColorspaceOfProfile(hProfile, 2, FALSE); nChannels = T_CHANNELS(InputFormat); cmsDetectBlackPoint(&BlackPointAdaptedToD50, hProfile, Intent, 0); // Adjust output to Lab4 hLab = cmsCreateLab4ProfileTHR(m ->ContextID, NULL); Profiles[0] = hProfile; Profiles[1] = hLab; xform = cmsCreateMultiprofileTransform(Profiles, 2, InputFormat, TYPE_Lab_DBL, Intent, 0); cmsCloseProfile(hLab); if (xform == NULL) { cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Cannot create transform Profile -> Lab"); return 0; } // Only 1, 3 and 4 channels are allowed switch (nChannels) { case 1: { cmsToneCurve* Gray2Y = ExtractGray2Y(m ->ContextID, hProfile, Intent); EmitCIEBasedA(m, Gray2Y, &BlackPointAdaptedToD50); cmsFreeToneCurve(Gray2Y); } break; case 3: case 4: { cmsUInt32Number OutFrm = TYPE_Lab_16; cmsPipeline* DeviceLink; _cmsTRANSFORM* v = (_cmsTRANSFORM*) xform; DeviceLink = cmsPipelineDup(v ->Lut); if (DeviceLink == NULL) return 0; dwFlags |= cmsFLAGS_FORCE_CLUT; _cmsOptimizePipeline(&DeviceLink, Intent, &InputFormat, &OutFrm, &dwFlags); rc = EmitCIEBasedDEF(m, DeviceLink, Intent, &BlackPointAdaptedToD50); cmsPipelineFree(DeviceLink); } break; default: cmsSignalError(m ->ContextID, cmsERROR_COLORSPACE_CHECK, "Only 3, 4 channels supported for CSA. This profile has %d channels.", nChannels); return 0; } cmsDeleteTransform(xform); return 1; }