sk_sp<SkColorSpace> SkColorSpace::NewRGB(float gammaVals[3], const SkMatrix44& toXYZD50) {
sk_sp<SkGammas> gammas = nullptr;
// Check if we really have sRGB or Adobe RGB
if (color_space_almost_equal(2.2f, gammaVals[0]) &&
color_space_almost_equal(2.2f, gammaVals[1]) &&
color_space_almost_equal(2.2f, gammaVals[2]))
{
gStandardGammasOnce([] {
gStandardGammas = new SkGammas(2.2f, 2.2f, 2.2f);
});
gammas = sk_ref_sp(gStandardGammas);
if (xyz_almost_equal(toXYZD50, gSRGB_toXYZD50)) {
return SkColorSpace::NewNamed(kSRGB_Named);
} else if (xyz_almost_equal(toXYZD50, gAdobeRGB_toXYZD50)) {
return SkColorSpace::NewNamed(kAdobeRGB_Named);
}
}
if (!gammas) {
gammas = sk_sp<SkGammas>(new SkGammas(gammaVals[0], gammaVals[1], gammaVals[2]));
}
return sk_sp<SkColorSpace>(new SkColorSpace(gammas, toXYZD50, kUnknown_Named));
}
sk_sp<SkColorSpace> SkColorSpace_Base::NewRGB(GammaNamed gammaNamed, const SkMatrix44& toXYZD50) {
switch (gammaNamed) {
case kSRGB_GammaNamed:
if (xyz_almost_equal(toXYZD50, gSRGB_toXYZD50)) {
return SkColorSpace::NewNamed(kSRGB_Named);
}
break;
case k2Dot2Curve_GammaNamed:
if (xyz_almost_equal(toXYZD50, gAdobeRGB_toXYZD50)) {
return SkColorSpace::NewNamed(kAdobeRGB_Named);
}
break;
case kNonStandard_GammaNamed:
// This is not allowed.
return nullptr;
default:
break;
}
return sk_sp<SkColorSpace>(new SkColorSpace_Base(gammaNamed, toXYZD50, kUnknown_Named));
}
sk_sp<SkColorSpace> SkColorSpace::MakeRGB(const skcms_TransferFunction& transferFn,
const skcms_Matrix3x3& toXYZ) {
if (!is_valid_transfer_fn(transferFn)) {
return nullptr;
}
const float* tf = &transferFn.g;
if (is_almost_srgb(transferFn)) {
if (xyz_almost_equal(toXYZ, SkNamedGamut::kSRGB)) {
return SkColorSpace::MakeSRGB();
}
tf = &SkNamedTransferFn::kSRGB.g;
} else if (is_almost_2dot2(transferFn)) {
tf = &SkNamedTransferFn::k2Dot2.g;
} else if (is_almost_linear(transferFn)) {
if (xyz_almost_equal(toXYZ, SkNamedGamut::kSRGB)) {
return SkColorSpace::MakeSRGBLinear();
}
tf = &SkNamedTransferFn::kLinear.g;
}
return sk_sp<SkColorSpace>(new SkColorSpace(tf, toXYZ));
}
