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");
}
cmsBool _setHeaderInfo(cmsHPROFILE pf, jbyte* pBuffer, jint bufferSize)
{
cmsICCHeader pfHeader = { 0 };
if (pBuffer == NULL || bufferSize < sizeof(cmsICCHeader)) {
return FALSE;
}
memcpy(&pfHeader, pBuffer, sizeof(cmsICCHeader));
// now set header fields, which we can access using the lcms2 public API
cmsSetHeaderFlags(pf, pfHeader.flags);
cmsSetHeaderManufacturer(pf, pfHeader.manufacturer);
cmsSetHeaderModel(pf, pfHeader.model);
cmsSetHeaderAttributes(pf, pfHeader.attributes);
cmsSetHeaderProfileID(pf, (cmsUInt8Number*)&(pfHeader.profileID));
cmsSetHeaderRenderingIntent(pf, pfHeader.renderingIntent);
cmsSetPCS(pf, pfHeader.pcs);
cmsSetColorSpace(pf, pfHeader.colorSpace);
cmsSetDeviceClass(pf, pfHeader.deviceClass);
cmsSetEncodedICCversion(pf, pfHeader.version);
return TRUE;
}