static cmsHPROFILE
gimp_color_profile_new_d65_gray_linear_internal (void)
{
cmsHPROFILE profile;
/* white point is D65 from the sRGB specs */
cmsCIExyY whitepoint = { 0.3127, 0.3290, 1.0 };
cmsToneCurve *curve = cmsBuildGamma (NULL, 1.0);
profile = cmsCreateGrayProfile (&whitepoint, curve);
cmsFreeToneCurve (curve);
gimp_color_profile_set_tag (profile, cmsSigProfileDescriptionTag,
"GIMP built-in D65 Linear Grayscale");
gimp_color_profile_set_tag (profile, cmsSigDeviceMfgDescTag,
"GIMP");
gimp_color_profile_set_tag (profile, cmsSigDeviceModelDescTag,
"D65 Linear Grayscale");
gimp_color_profile_set_tag (profile, cmsSigCopyrightTag,
"Public Domain");
return profile;
}
static cmsHPROFILE *
gimp_color_profile_new_d50_gray_lab_trc_internal (void)
{
cmsHPROFILE profile;
/* white point is D50 from the ICC profile illuminant specs */
cmsCIExyY whitepoint = {0.345702915, 0.358538597, 1.0};
cmsFloat64Number lab_parameters[5] =
{ 3.0, 1.0 / 1.16, 0.16 / 1.16, 2700.0 / 24389.0, 0.08000 };
cmsToneCurve *curve = cmsBuildParametricToneCurve (NULL, 4,
lab_parameters);
profile = cmsCreateGrayProfile (&whitepoint, curve);
cmsFreeToneCurve (curve);
gimp_color_profile_set_tag (profile, cmsSigProfileDescriptionTag,
"GIMP built-in D50 Grayscale with LAB L TRC");
gimp_color_profile_set_tag (profile, cmsSigDeviceMfgDescTag,
"GIMP");
gimp_color_profile_set_tag (profile, cmsSigDeviceModelDescTag,
"D50 Grayscale with LAB L TRC");
gimp_color_profile_set_tag (profile, cmsSigCopyrightTag,
"Public Domain");
return profile;
}
static cmsHPROFILE *
gimp_color_profile_new_d65_gray_srgb_trc_internal (void)
{
cmsHPROFILE profile;
/* white point is D65 from the sRGB specs */
cmsCIExyY whitepoint = { 0.3127, 0.3290, 1.0 };
cmsFloat64Number srgb_parameters[5] =
{ 2.4, 1.0 / 1.055, 0.055 / 1.055, 1.0 / 12.92, 0.04045 };
cmsToneCurve *curve = cmsBuildParametricToneCurve (NULL, 4,
srgb_parameters);
profile = cmsCreateGrayProfile (&whitepoint, curve);
cmsFreeToneCurve (curve);
gimp_color_profile_set_tag (profile, cmsSigProfileDescriptionTag,
"GIMP built-in D65 Grayscale with sRGB TRC");
gimp_color_profile_set_tag (profile, cmsSigDeviceMfgDescTag,
"GIMP");
gimp_color_profile_set_tag (profile, cmsSigDeviceModelDescTag,
"D65 Grayscale with sRGB TRC");
gimp_color_profile_set_tag (profile, cmsSigCopyrightTag,
"Public Domain");
return profile;
}
static
cmsHPROFILE OpenProfile(const char* File)
{
if (!File)
return cmsCreate_sRGBProfile();
if (stricmp(File, "*sRGB") == 0)
return cmsCreate_sRGBProfile(NULL);
if (stricmp(File, "*Lab") == 0)
return cmsCreateLabProfile(NULL);
if (stricmp(File, "*LabD65") == 0) {
cmsCIExyY D65xyY;
cmsWhitePointFromTemp(6504, &D65xyY);
return cmsCreateLabProfile(&D65xyY);
}
if (stricmp(File, "*XYZ") == 0)
return cmsCreateXYZProfile();
if (stricmp(File, "*Gray22") == 0) {
LPGAMMATABLE Gamma = cmsBuildGamma(256, 2.2);
cmsHPROFILE hProfile = cmsCreateGrayProfile(cmsD50_xyY(), Gamma);
cmsFreeGamma(Gamma);
return hProfile;
}
return cmsOpenProfileFromFile(File, "r");
}
static
cmsHPROFILE OpenProfile(const char* File)
{
cmsHPROFILE h;
if (!File)
return cmsCreate_sRGBProfile();
if (stricmp(File, "*Lab") == 0)
return cmsCreateLabProfile(NULL);
if (stricmp(File, "*XYZ") == 0)
return cmsCreateXYZProfile();
if (stricmp(File, "*srgb") == 0)
return cmsCreate_sRGBProfile();
if (stricmp(File, "*Gray22") == 0) {
LPGAMMATABLE Gamma = cmsBuildGamma(256, 2.2);
cmsHPROFILE hProfile = cmsCreateGrayProfile(cmsD50_xyY(), Gamma);
cmsFreeGamma(Gamma);
return hProfile;
}
if (stricmp(File, "*Lin2222") == 0) {
LPGAMMATABLE Gamma = cmsBuildGamma(256, 2.2);
LPGAMMATABLE Gamma4[4];
cmsHPROFILE hProfile;
Gamma4[0] = Gamma4[1] = Gamma4[2] = Gamma4[3] = Gamma;
hProfile = cmsCreateLinearizationDeviceLink(icSigCmykData, Gamma4);
cmsFreeGamma(Gamma);
return hProfile;
}
h = cmsOpenProfileFromFile(File, "r");
if (cmsGetDeviceClass(h) == icSigNamedColorClass)
FatalError("ERROR: Cannot make devicelink of named color profiles!");
return h;
}
static void init(void)
{
cmsCIEXYZ D65_XYZ = {0.95047, 1.0, 1.08883 };
cmsCIExyY D65;
cmsXYZ2xyY(&D65, &D65_XYZ);
cmsToneCurve *linear = cmsBuildGamma(NULL, 1.0);
cmsToneCurve *linrgb[3] = {linear,linear,linear};
cmsCIExyYTRIPLE primaries = {
{0.64, 0.33, 1.0},
{0.30, 0.60, 1.0},
{0.15, 0.06, 1.0}
};
cmsFloat64Number P[5] = { 2.4, 1. / 1.055, 0.055 / 1.055, 1. / 12.92, 0.04045 };
cmsToneCurve *srgb = cmsBuildParametricToneCurve(NULL, 4, P);
cmsToneCurve *srgbcurve[3] = {srgb,srgb,srgb};
cmsHPROFILE hsRGB = cmsCreateRGBProfile(&D65, &primaries, srgbcurve);
cmsHPROFILE hLab = cmsCreateLab4Profile(NULL);
cmsHPROFILE hlRGB = cmsCreateRGBProfile(&D65, &primaries, linrgb);
cmsHPROFILE hlGray = cmsCreateGrayProfile(cmsD50_xyY(), linear);
cmsSetHeaderFlags(hlGray, cmsEmbeddedProfileTrue);
cmsSaveProfileToFile(hlGray,"lgray.icc");
cmsSetHeaderFlags(hlRGB, cmsEmbeddedProfileTrue);
cmsSaveProfileToFile(hlRGB,"lrgb.icc");
xform_srgb_to_lrgb = cmsCreateTransform(hsRGB, TYPE_RGB_DBL,
hlRGB, TYPE_RGB_DBL,
INTENT_RELATIVE_COLORIMETRIC,
cmsFLAGS_NOOPTIMIZE /* preserve precision */
);
xform_srgb_to_lab = cmsCreateTransform(hsRGB, TYPE_RGB_DBL, hLab,
TYPE_Lab_DBL, INTENT_RELATIVE_COLORIMETRIC,
cmsFLAGS_NOOPTIMIZE);
xform_srgb_to_lgray = cmsCreateTransform(hsRGB, TYPE_RGB_DBL, hlGray,
TYPE_GRAY_DBL, INTENT_RELATIVE_COLORIMETRIC,
cmsFLAGS_NOOPTIMIZE);
cmsCloseProfile(hsRGB);
cmsCloseProfile(hlRGB);
cmsCloseProfile(hLab);
cmsCloseProfile(hlGray);
cmsFreeToneCurve(linear);
cmsFreeToneCurve(srgb);
cmsSetLogErrorHandler(errlog);
/* sRGB, RGB, Lab, Gray */
printf("R',G',B',R,G,B,L,a,b,Gray\n");
}
static PyObject *
pycms_CreateGrayProfile(PyObject *self, PyObject *args) {
cmsHPROFILE hProfile;
cmsToneCurve *tonecurve;
tonecurve = cmsBuildGamma(NULL, 2.2);
hProfile = cmsCreateGrayProfile(0, tonecurve);
cmsFreeToneCurve(tonecurve);
if(hProfile==NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return Py_BuildValue("O", PyCObject_FromVoidPtr((void *)hProfile, (void *)cmsCloseProfile));
}
static PyObject *
pycms_CreateGrayProfile(PyObject *self, PyObject *args) {
cmsHPROFILE hProfile;
LPGAMMATABLE gamma;
cmsErrorAction(LCMS_ERROR_IGNORE);
gamma = cmsBuildGamma(256, 2.2);
hProfile = cmsCreateGrayProfile(cmsD50_xyY(), gamma);
cmsFreeGamma(gamma);
if(hProfile==NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return Py_BuildValue("O", PyCObject_FromVoidPtr((void *)hProfile, (void *)cmsCloseProfile));
}
