// Compute a CHAD based on a given temperature
static
void Temp2CHAD(cmsMAT3* Chad, cmsFloat64Number Temp)
{
cmsCIEXYZ White;
cmsCIExyY ChromaticityOfWhite;
cmsWhitePointFromTemp(&ChromaticityOfWhite, Temp);
cmsxyY2XYZ(&White, &ChromaticityOfWhite);
_cmsAdaptationMatrix(Chad, NULL, &White, cmsD50_XYZ());
}
cmsHPROFILE LCMSEXPORT cmsCreateGrayProfile(LPcmsCIExyY WhitePoint,
LPGAMMATABLE TransferFunction)
{
cmsHPROFILE hICC;
cmsCIEXYZ tmp;
hICC = _cmsCreateProfilePlaceholder();
if (!hICC) // can't allocate
return NULL;
cmsSetDeviceClass(hICC, icSigDisplayClass);
cmsSetColorSpace(hICC, icSigGrayData);
cmsSetPCS(hICC, icSigXYZData);
cmsSetRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Implement profile using following tags:
//
// 1 icSigProfileDescriptionTag
// 2 icSigMediaWhitePointTag
// 6 icSigGrayTRCTag
// This conforms a standard Gray DisplayProfile
// Fill-in the tags
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "(lcms internal)");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "lcms gray virtual profile");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "gray built-in");
if (WhitePoint) {
cmsxyY2XYZ(&tmp, WhitePoint);
cmsAddTag(hICC, icSigMediaWhitePointTag, (LPVOID) &tmp);
}
if (TransferFunction) {
// In case of gamma, we must dup' the table pointer
cmsAddTag(hICC, icSigGrayTRCTag, (LPVOID) TransferFunction);
}
return hICC;
}
// This function creates a profile based on White point and transfer function.
cmsHPROFILE CMSEXPORT cmsCreateGrayProfileTHR(cmsContext ContextID,
const cmsCIExyY* WhitePoint,
const cmsToneCurve* TransferFunction)
{
cmsHPROFILE hICC;
cmsCIEXYZ tmp;
hICC = cmsCreateProfilePlaceholder(ContextID);
if (!hICC) // can't allocate
return NULL;
cmsSetProfileVersion(hICC, 4.3);
cmsSetDeviceClass(hICC, cmsSigDisplayClass);
cmsSetColorSpace(hICC, cmsSigGrayData);
cmsSetPCS(hICC, cmsSigXYZData);
cmsSetHeaderRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Implement profile using following tags:
//
// 1 cmsSigProfileDescriptionTag
// 2 cmsSigMediaWhitePointTag
// 3 cmsSigGrayTRCTag
// This conforms a standard Gray DisplayProfile
// Fill-in the tags
if (!SetTextTags(hICC, L"gray built-in")) goto Error;
if (WhitePoint) {
cmsxyY2XYZ(&tmp, WhitePoint);
if (!cmsWriteTag(hICC, cmsSigMediaWhitePointTag, (void*) &tmp)) goto Error;
}
if (TransferFunction) {
if (!cmsWriteTag(hICC, cmsSigGrayTRCTag, (void*) TransferFunction)) goto Error;
}
return hICC;
Error:
if (hICC)
cmsCloseProfile(hICC);
return NULL;
}
BOOL cmsAdaptMatrixFromD50(LPMAT3 r, LPcmsCIExyY DestWhitePt)
{
cmsCIEXYZ Dn;
MAT3 Bradford;
MAT3 Tmp;
cmsxyY2XYZ(&Dn, DestWhitePt);
cmsAdaptationMatrix(&Bradford, NULL, cmsD50_XYZ(), &Dn);
Tmp = *r;
MAT3per(r, &Bradford, &Tmp);
return TRUE;
}
BOOL cmsAdaptMatrixToD50(LPMAT3 r, LPcmsCIExyY SourceWhitePt)
{
cmsCIEXYZ Dn;
MAT3 Bradford;
MAT3 Tmp;
cmsxyY2XYZ(&Dn, SourceWhitePt);
cmsAdaptationMatrix(&Bradford, NULL, &Dn, cmsD50_XYZ());
Tmp = *r;
MAT3per(r, &Bradford, &Tmp);
return TRUE;
}
/// WAS: Same as anterior, but assuming D50 source. White point is given in xyY
static cmsBool cmsAdaptMatrixFromD50(cmsMAT3* const r, const cmsCIExyY* const DestWhitePt)
{
cmsCIEXYZ Dn;
cmsMAT3 Bradford;
cmsMAT3 Tmp;
cmsxyY2XYZ(&Dn, DestWhitePt);
if (!_cmsAdaptationMatrix(&Bradford, NULL, &Dn, cmsD50_XYZ()))
return FALSE;
Tmp = *r;
_cmsMAT3per(r, &Bradford, &Tmp);
return TRUE;
}
cmsHPROFILE CMSEXPORT cmsCreateBCHSWabstractProfileTHR(cmsContext ContextID,
int nLUTPoints,
cmsFloat64Number Bright,
cmsFloat64Number Contrast,
cmsFloat64Number Hue,
cmsFloat64Number Saturation,
int TempSrc,
int TempDest)
{
cmsHPROFILE hICC;
cmsPipeline* Pipeline;
BCHSWADJUSTS bchsw;
cmsCIExyY WhitePnt;
cmsStage* CLUT;
cmsUInt32Number Dimensions[MAX_INPUT_DIMENSIONS];
int i;
bchsw.Brightness = Bright;
bchsw.Contrast = Contrast;
bchsw.Hue = Hue;
bchsw.Saturation = Saturation;
cmsWhitePointFromTemp(&WhitePnt, TempSrc );
cmsxyY2XYZ(&bchsw.WPsrc, &WhitePnt);
cmsWhitePointFromTemp(&WhitePnt, TempDest);
cmsxyY2XYZ(&bchsw.WPdest, &WhitePnt);
hICC = cmsCreateProfilePlaceholder(ContextID);
if (!hICC) // can't allocate
return NULL;
cmsSetDeviceClass(hICC, cmsSigAbstractClass);
cmsSetColorSpace(hICC, cmsSigLabData);
cmsSetPCS(hICC, cmsSigLabData);
cmsSetHeaderRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Creates a Pipeline with 3D grid only
Pipeline = cmsPipelineAlloc(ContextID, 3, 3);
if (Pipeline == NULL) {
cmsCloseProfile(hICC);
return NULL;
}
for (i=0; i < MAX_INPUT_DIMENSIONS; i++) Dimensions[i] = nLUTPoints;
CLUT = cmsStageAllocCLut16bitGranular(ContextID, Dimensions, 3, 3, NULL);
if (CLUT == NULL) return NULL;
if (!cmsStageSampleCLut16bit(CLUT, bchswSampler, (void*) &bchsw, 0)) {
// Shouldn't reach here
goto Error;
}
if (!cmsPipelineInsertStage(Pipeline, cmsAT_END, CLUT)) {
goto Error;
}
// Create tags
if (!SetTextTags(hICC, L"BCHS built-in")) return NULL;
cmsWriteTag(hICC, cmsSigMediaWhitePointTag, (void*) cmsD50_XYZ());
cmsWriteTag(hICC, cmsSigAToB0Tag, (void*) Pipeline);
// Pipeline is already on virtual profile
cmsPipelineFree(Pipeline);
// Ok, done
return hICC;
Error:
cmsPipelineFree(Pipeline);
cmsCloseProfile(hICC);
return NULL;
}
// This function creates a profile based on White point, primaries and
// transfer functions.
cmsHPROFILE CMSEXPORT cmsCreateRGBProfileTHR(cmsContext ContextID,
const cmsCIExyY* WhitePoint,
const cmsCIExyYTRIPLE* Primaries,
cmsToneCurve* const TransferFunction[3])
{
cmsHPROFILE hICC;
cmsMAT3 MColorants;
cmsCIEXYZTRIPLE Colorants;
cmsCIExyY MaxWhite;
cmsMAT3 CHAD;
cmsCIEXYZ WhitePointXYZ;
hICC = cmsCreateProfilePlaceholder(ContextID);
if (!hICC) // can't allocate
return NULL;
cmsSetProfileVersion(hICC, 4.3);
cmsSetDeviceClass(hICC, cmsSigDisplayClass);
cmsSetColorSpace(hICC, cmsSigRgbData);
cmsSetPCS(hICC, cmsSigXYZData);
cmsSetHeaderRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Implement profile using following tags:
//
// 1 cmsSigProfileDescriptionTag
// 2 cmsSigMediaWhitePointTag
// 3 cmsSigRedColorantTag
// 4 cmsSigGreenColorantTag
// 5 cmsSigBlueColorantTag
// 6 cmsSigRedTRCTag
// 7 cmsSigGreenTRCTag
// 8 cmsSigBlueTRCTag
// 9 Chromatic adaptation Tag
// This conforms a standard RGB DisplayProfile as says ICC, and then I add (As per addendum II)
// 10 cmsSigChromaticityTag
if (!SetTextTags(hICC, L"RGB built-in")) goto Error;
if (WhitePoint) {
if (!cmsWriteTag(hICC, cmsSigMediaWhitePointTag, cmsD50_XYZ())) goto Error;
cmsxyY2XYZ(&WhitePointXYZ, WhitePoint);
_cmsAdaptationMatrix(&CHAD, NULL, &WhitePointXYZ, cmsD50_XYZ());
// This is a V4 tag, but many CMM does read and understand it no matter which version
if (!cmsWriteTag(hICC, cmsSigChromaticAdaptationTag, (void*) &CHAD)) goto Error;
}
if (WhitePoint && Primaries) {
MaxWhite.x = WhitePoint -> x;
MaxWhite.y = WhitePoint -> y;
MaxWhite.Y = 1.0;
if (!_cmsBuildRGB2XYZtransferMatrix(&MColorants, &MaxWhite, Primaries)) goto Error;
Colorants.Red.X = MColorants.v[0].n[0];
Colorants.Red.Y = MColorants.v[1].n[0];
Colorants.Red.Z = MColorants.v[2].n[0];
Colorants.Green.X = MColorants.v[0].n[1];
Colorants.Green.Y = MColorants.v[1].n[1];
Colorants.Green.Z = MColorants.v[2].n[1];
Colorants.Blue.X = MColorants.v[0].n[2];
Colorants.Blue.Y = MColorants.v[1].n[2];
Colorants.Blue.Z = MColorants.v[2].n[2];
if (!cmsWriteTag(hICC, cmsSigRedColorantTag, (void*) &Colorants.Red)) goto Error;
if (!cmsWriteTag(hICC, cmsSigBlueColorantTag, (void*) &Colorants.Blue)) goto Error;
if (!cmsWriteTag(hICC, cmsSigGreenColorantTag, (void*) &Colorants.Green)) goto Error;
}
if (TransferFunction) {
// Tries to minimize space. Thanks to Richard Hughes for this nice idea
if (!cmsWriteTag(hICC, cmsSigRedTRCTag, (void*) TransferFunction[0])) goto Error;
if (TransferFunction[1] == TransferFunction[0]) {
if (!cmsLinkTag (hICC, cmsSigGreenTRCTag, cmsSigRedTRCTag)) goto Error;
} else {
if (!cmsWriteTag(hICC, cmsSigGreenTRCTag, (void*) TransferFunction[1])) goto Error;
}
if (TransferFunction[2] == TransferFunction[0]) {
if (!cmsLinkTag (hICC, cmsSigBlueTRCTag, cmsSigRedTRCTag)) goto Error;
} else {
if (!cmsWriteTag(hICC, cmsSigBlueTRCTag, (void*) TransferFunction[2])) goto Error;
}
}
if (Primaries) {
if (!cmsWriteTag(hICC, cmsSigChromaticityTag, (void*) Primaries)) goto Error;
}
return hICC;
Error:
if (hICC)
cmsCloseProfile(hICC);
return NULL;
}
cmsHPROFILE LCMSEXPORT f_cmsCreateBCHSWabstractProfile(int nLUTPoints,
double Exposure,
double Bright,
double Contrast,
double Hue,
double Saturation,
LPcmsCIExyY current_wp,
LPcmsCIExyY destination_wp,
LPGAMMATABLE Tables [])
{
cmsHPROFILE hICC;
LPLUT Lut;
BCHSWADJUSTS bchsw;
cmsCIExyY WhitePnt;
bchsw.Exposure = Exposure;
bchsw.Brightness = Bright;
bchsw.Contrast = Contrast;
bchsw.Hue = Hue;
bchsw.Saturation = Saturation;
cmsxyY2XYZ(&bchsw.WPsrc, current_wp);
cmsxyY2XYZ(&bchsw.WPdest, destination_wp);
hICC = _cmsCreateProfilePlaceholder();
if (!hICC) // can't allocate
return NULL;
cmsSetDeviceClass(hICC, icSigAbstractClass);
cmsSetColorSpace(hICC, icSigLabData);
cmsSetPCS(hICC, icSigLabData);
cmsSetRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Creates a LUT with 3D grid only
Lut = cmsAllocLUT();
cmsAlloc3DGrid(Lut, nLUTPoints, 3, 3);
if (Tables != NULL)
cmsAllocLinearTable (Lut, Tables, 1);
if (!cmsSample3DGrid(Lut, bchswSampler, (LPVOID) &bchsw, 0)) {
// Shouldn't reach here
cmsFreeLUT(Lut);
cmsCloseProfile(hICC);
return NULL;
}
// Create tags
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "(f-spot internal)");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "f-spot BCHSW abstract profile");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "BCHSW built-in");
cmsAddTag(hICC, icSigMediaWhitePointTag, (LPVOID) cmsD50_XYZ());
cmsAddTag(hICC, icSigAToB0Tag, (LPVOID) Lut);
// LUT is already on virtual profile
cmsFreeLUT(Lut);
// Ok, done
return hICC;
}
cmsHPROFILE LCMSEXPORT cmsCreateRGBProfile(LPcmsCIExyY WhitePoint,
LPcmsCIExyYTRIPLE Primaries,
LPGAMMATABLE TransferFunction[3])
{
cmsHPROFILE hICC;
cmsCIEXYZ tmp;
MAT3 MColorants;
cmsCIEXYZTRIPLE Colorants;
cmsCIExyY MaxWhite;
hICC = _cmsCreateProfilePlaceholder();
if (!hICC) // can't allocate
return NULL;
cmsSetDeviceClass(hICC, icSigDisplayClass);
cmsSetColorSpace(hICC, icSigRgbData);
cmsSetPCS(hICC, icSigXYZData);
cmsSetRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Implement profile using following tags:
//
// 1 icSigProfileDescriptionTag
// 2 icSigMediaWhitePointTag
// 3 icSigRedColorantTag
// 4 icSigGreenColorantTag
// 5 icSigBlueColorantTag
// 6 icSigRedTRCTag
// 7 icSigGreenTRCTag
// 8 icSigBlueTRCTag
// This conforms a standard RGB DisplayProfile as says ICC, and then I add
// 9 icSigChromaticityTag
// As addendum II
// Fill-in the tags
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "(lcms internal)");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "lcms RGB virtual profile");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "rgb built-in");
if (WhitePoint) {
cmsxyY2XYZ(&tmp, WhitePoint);
cmsAddTag(hICC, icSigMediaWhitePointTag, (LPVOID) &tmp);
}
if (WhitePoint && Primaries) {
MaxWhite.x = WhitePoint -> x;
MaxWhite.y = WhitePoint -> y;
MaxWhite.Y = 1.0;
if (!cmsBuildRGB2XYZtransferMatrix(&MColorants, &MaxWhite, Primaries))
{
cmsCloseProfile(hICC);
return NULL;
}
cmsAdaptMatrixToD50(&MColorants, &MaxWhite);
Colorants.Red.X = MColorants.v[0].n[0];
Colorants.Red.Y = MColorants.v[1].n[0];
Colorants.Red.Z = MColorants.v[2].n[0];
Colorants.Green.X = MColorants.v[0].n[1];
Colorants.Green.Y = MColorants.v[1].n[1];
Colorants.Green.Z = MColorants.v[2].n[1];
Colorants.Blue.X = MColorants.v[0].n[2];
Colorants.Blue.Y = MColorants.v[1].n[2];
Colorants.Blue.Z = MColorants.v[2].n[2];
cmsAddTag(hICC, icSigRedColorantTag, (LPVOID) &Colorants.Red);
cmsAddTag(hICC, icSigBlueColorantTag, (LPVOID) &Colorants.Blue);
cmsAddTag(hICC, icSigGreenColorantTag, (LPVOID) &Colorants.Green);
}
if (TransferFunction) {
// In case of gamma, we must dup' the table pointer
cmsAddTag(hICC, icSigRedTRCTag, (LPVOID) TransferFunction[0]);
cmsAddTag(hICC, icSigGreenTRCTag, (LPVOID) TransferFunction[1]);
cmsAddTag(hICC, icSigBlueTRCTag, (LPVOID) TransferFunction[2]);
}
if (Primaries) {
cmsAddTag(hICC, icSigChromaticityTag, (LPVOID) Primaries);
}
return hICC;
}
static
BOOL CreateLUTS(LPMONITORPROFILERDATA sys, LPLUT* A2B, LPLUT* B2A)
{
LPLUT AToB0 = cmsAllocLUT();
LPLUT BToA0 = cmsAllocLUT();
LPGAMMATABLE LabG;
cmsCIExyY xyY;
cmsAlloc3DGrid(AToB0, sys->hdr.CLUTPoints, 3, 3);
cmsAlloc3DGrid(BToA0, sys->hdr.CLUTPoints, 3, 3);
/* cmsAllocLinearTable(AToB0, sys -> Prelinearization, 1); */
sys->ReverseTables[0] = cmsReverseGamma(4096, sys ->Prelinearization[0]);
sys->ReverseTables[1] = cmsReverseGamma(4096, sys ->Prelinearization[1]);
sys->ReverseTables[2] = cmsReverseGamma(4096, sys ->Prelinearization[2]);
/* Prelinearization */
LabG = cmsBuildGamma(4096, 3.0);
sys -> PreLab[0] = cmsJoinGammaEx(LabG, sys ->Prelinearization[0], 4096);
sys -> PreLab[1] = cmsJoinGammaEx(LabG, sys ->Prelinearization[1], 4096);
sys -> PreLab[2] = cmsJoinGammaEx(LabG, sys ->Prelinearization[2], 4096);
sys -> PreLabRev[0] = cmsJoinGammaEx(sys ->Prelinearization[0], LabG, 4096);
sys -> PreLabRev[1] = cmsJoinGammaEx(sys ->Prelinearization[1], LabG, 4096);
sys -> PreLabRev[2] = cmsJoinGammaEx(sys ->Prelinearization[2], LabG, 4096);
cmsFreeGamma(LabG);
cmsAllocLinearTable(AToB0, sys->PreLabRev, 1);
cmsAllocLinearTable(BToA0, sys->PreLab, 2);
/* Set CIECAM97s parameters */
sys -> hdr.device.whitePoint.X = sys -> hdr.WhitePoint.X * 100.;
sys -> hdr.device.whitePoint.Y = sys -> hdr.WhitePoint.Y * 100.;
sys -> hdr.device.whitePoint.Z = sys -> hdr.WhitePoint.Z * 100.;
/* Normalize White point for CIECAM97s model */
cmsXYZ2xyY(&xyY, &sys -> hdr.device.whitePoint);
xyY.Y = 100.;
cmsxyY2XYZ(&sys -> hdr.device.whitePoint, &xyY);
sys->hdr.hDevice = cmsCIECAM97sInit(&sys->hdr.device);
sys->hdr.hPCS = cmsCIECAM97sInit(&sys->hdr.PCS);
cmsSample3DGrid(AToB0, RegressionSamplerA2B, sys, 0);
cmsSample3DGrid(BToA0, RegressionSamplerB2A, sys, 0);
cmsCIECAM97sDone(sys->hdr.hDevice);
cmsCIECAM97sDone(sys->hdr.hPCS);
cmsAddTag(sys->hdr.hProfile, icSigAToB0Tag, AToB0);
cmsAddTag(sys->hdr.hProfile, icSigBToA0Tag, BToA0);
/* This is the 0xff00 trick to map white at lattice point */
BToA0 ->Matrix.v[0].n[0] = DOUBLE_TO_FIXED((65535.0 / 65280.0));
*A2B = AToB0;
*B2A = BToA0;
cmsFreeGammaTriple(sys->ReverseTables);
cmsFreeGammaTriple(sys->PreLab);
cmsFreeGammaTriple(sys->PreLabRev);
return true;
}