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;
}
static
cmsHPROFILE CreateNamedColorDevicelink(cmsHTRANSFORM xform)
{
_LPcmsTRANSFORM v = (_LPcmsTRANSFORM) xform;
cmsHPROFILE hICC;
cmsCIEXYZ WhitePoint;
int i, nColors;
size_t Size;
LPcmsNAMEDCOLORLIST nc2;
hICC = _cmsCreateProfilePlaceholder();
if (hICC == NULL) return NULL;
cmsSetRenderingIntent(hICC, v -> Intent);
cmsSetDeviceClass(hICC, icSigNamedColorClass);
cmsSetColorSpace(hICC, v ->ExitColorSpace);
cmsSetPCS(hICC, cmsGetPCS(v ->InputProfile));
cmsTakeMediaWhitePoint(&WhitePoint, v ->InputProfile);
cmsAddTag(hICC, icSigMediaWhitePointTag, &WhitePoint);
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "LittleCMS");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "Named color Device link");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "Named color Device link");
nColors = cmsNamedColorCount(xform);
nc2 = cmsAllocNamedColorList(nColors);
Size = sizeof(cmsNAMEDCOLORLIST) + (sizeof(cmsNAMEDCOLOR) * (nColors-1));
CopyMemory(nc2, v->NamedColorList, Size);
nc2 ->ColorantCount = _cmsChannelsOf(v ->ExitColorSpace);
for (i=0; i < nColors; i++) {
cmsDoTransform(xform, &i, nc2 ->List[i].DeviceColorant, 1);
}
cmsAddTag(hICC, icSigNamedColor2Tag, (void*) nc2);
cmsFreeNamedColorList(nc2);
return hICC;
}
cmsHPROFILE LCMSEXPORT cmsCreateLinearizationDeviceLink(icColorSpaceSignature ColorSpace,
LPGAMMATABLE TransferFunctions[])
{
cmsHPROFILE hICC;
LPLUT Lut;
hICC = _cmsCreateProfilePlaceholder();
if (!hICC) // can't allocate
return NULL;
cmsSetDeviceClass(hICC, icSigLinkClass);
cmsSetColorSpace(hICC, ColorSpace);
cmsSetPCS(hICC, ColorSpace);
cmsSetRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Creates a LUT with prelinearization step only
Lut = cmsAllocLUT();
if (Lut == NULL) return NULL;
// Set up channels
Lut ->InputChan = Lut ->OutputChan = _cmsChannelsOf(ColorSpace);
// Copy tables to LUT
cmsAllocLinearTable(Lut, TransferFunctions, 1);
// Create tags
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "(lcms internal)");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "lcms linearization device link");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "linearization 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 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 cmsCreateInkLimitingDeviceLink(icColorSpaceSignature ColorSpace,
double Limit)
{
cmsHPROFILE hICC;
LPLUT Lut;
if (ColorSpace != icSigCmykData) {
cmsSignalError(LCMS_ERRC_ABORTED, "InkLimiting: Only CMYK currently supported");
return NULL;
}
if (Limit < 0.0 || Limit > 400) {
cmsSignalError(LCMS_ERRC_WARNING, "InkLimiting: Limit should be between 0..400");
if (Limit < 0) Limit = 0;
if (Limit > 400) Limit = 400;
}
hICC = _cmsCreateProfilePlaceholder();
if (!hICC) // can't allocate
return NULL;
cmsSetDeviceClass(hICC, icSigLinkClass);
cmsSetColorSpace(hICC, ColorSpace);
cmsSetPCS(hICC, ColorSpace);
cmsSetRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Creates a LUT with 3D grid only
Lut = cmsAllocLUT();
if (Lut == NULL) {
cmsCloseProfile(hICC);
return NULL;
}
cmsAlloc3DGrid(Lut, 17, _cmsChannelsOf(ColorSpace),
_cmsChannelsOf(ColorSpace));
if (!cmsSample3DGrid(Lut, InkLimitingSampler, (LPVOID) &Limit, 0)) {
// Shouldn't reach here
cmsFreeLUT(Lut);
cmsCloseProfile(hICC);
return NULL;
}
// Create tags
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "(lcms internal)");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "lcms ink limiting device link");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "ink limiting 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;
}
cmsHPROFILE LCMSEXPORT cmsTransform2DeviceLink(cmsHTRANSFORM hTransform, DWORD dwFlags)
{
cmsHPROFILE hICC;
_LPcmsTRANSFORM v = (_LPcmsTRANSFORM) hTransform;
LPLUT Lut;
LCMSBOOL MustFreeLUT;
LPcmsNAMEDCOLORLIST InputColorant = NULL;
LPcmsNAMEDCOLORLIST OutputColorant = NULL;
// Check if is a named color transform
if (cmsGetDeviceClass(v ->InputProfile) == icSigNamedColorClass) {
return CreateNamedColorDevicelink(hTransform);
}
if (v ->DeviceLink) {
Lut = v -> DeviceLink;
MustFreeLUT = FALSE;
}
else {
Lut = _cmsPrecalculateDeviceLink(hTransform, dwFlags);
if (!Lut) return NULL;
MustFreeLUT = TRUE;
}
hICC = _cmsCreateProfilePlaceholder();
if (!hICC) { // can't allocate
if (MustFreeLUT) cmsFreeLUT(Lut);
return NULL;
}
FixColorSpaces(hICC, v -> EntryColorSpace, v -> ExitColorSpace, dwFlags);
cmsSetRenderingIntent(hICC, v -> Intent);
// Implement devicelink profile using following tags:
//
// 1 icSigProfileDescriptionTag
// 2 icSigMediaWhitePointTag
// 3 icSigAToB0Tag
cmsAddTag(hICC, icSigDeviceMfgDescTag, (LPVOID) "LittleCMS");
cmsAddTag(hICC, icSigProfileDescriptionTag, (LPVOID) "Device link");
cmsAddTag(hICC, icSigDeviceModelDescTag, (LPVOID) "Device link");
cmsAddTag(hICC, icSigMediaWhitePointTag, (LPVOID) cmsD50_XYZ());
if (cmsGetDeviceClass(hICC) == icSigOutputClass) {
cmsAddTag(hICC, icSigBToA0Tag, (LPVOID) Lut);
}
else
cmsAddTag(hICC, icSigAToB0Tag, (LPVOID) Lut);
// Try to read input and output colorant table
if (cmsIsTag(v ->InputProfile, icSigColorantTableTag)) {
// Input table can only come in this way.
InputColorant = cmsReadColorantTable(v ->InputProfile, icSigColorantTableTag);
}
// Output is a little bit more complex.
if (cmsGetDeviceClass(v ->OutputProfile) == icSigLinkClass) {
// This tag may exist only on devicelink profiles.
if (cmsIsTag(v ->OutputProfile, icSigColorantTableOutTag)) {
OutputColorant = cmsReadColorantTable(v ->OutputProfile, icSigColorantTableOutTag);
}
} else {
if (cmsIsTag(v ->OutputProfile, icSigColorantTableTag)) {
OutputColorant = cmsReadColorantTable(v ->OutputProfile, icSigColorantTableTag);
}
}
if (InputColorant)
cmsAddTag(hICC, icSigColorantTableTag, InputColorant);
if (OutputColorant)
cmsAddTag(hICC, icSigColorantTableOutTag, OutputColorant);
if (MustFreeLUT) cmsFreeLUT(Lut);
if (InputColorant) cmsFreeNamedColorList(InputColorant);
if (OutputColorant) cmsFreeNamedColorList(OutputColorant);
return hICC;
}
