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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/icc_profile.h"
#include "base/logging.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/skia_color_space_util.h"
#include "ui/gfx/test/icc_profiles.h"
namespace gfx {
TEST(ICCProfile, Conversions) {
ICCProfile icc_profile = ICCProfileForTestingColorSpin();
ColorSpace color_space_from_icc_profile = icc_profile.GetColorSpace();
ICCProfile icc_profile_from_color_space =
ICCProfile::FromParametricColorSpace(color_space_from_icc_profile);
EXPECT_TRUE(icc_profile_from_color_space.IsValid());
EXPECT_NE(icc_profile, icc_profile_from_color_space);
}
TEST(ICCProfile, SRGB) {
ICCProfile icc_profile = ICCProfileForTestingSRGB();
ColorSpace color_space = ColorSpace::CreateSRGB();
sk_sp<SkColorSpace> sk_color_space = SkColorSpace::MakeSRGB();
// The ICC profile parser should note that this is SRGB.
EXPECT_EQ(icc_profile.GetColorSpace(), ColorSpace::CreateSRGB());
EXPECT_EQ(icc_profile.GetColorSpace().ToSkColorSpace().get(),
sk_color_space.get());
// The parametric generating code should recognize that this is SRGB.
EXPECT_EQ(icc_profile.GetParametricColorSpace(), ColorSpace::CreateSRGB());
EXPECT_EQ(icc_profile.GetParametricColorSpace().ToSkColorSpace().get(),
sk_color_space.get());
// The generated color space should recognize that this is SRGB.
EXPECT_EQ(color_space.ToSkColorSpace().get(), sk_color_space.get());
}
TEST(ICCProfile, Equality) {
ICCProfile spin_profile = ICCProfileForTestingColorSpin();
ICCProfile adobe_profile = ICCProfileForTestingAdobeRGB();
EXPECT_TRUE(spin_profile == spin_profile);
EXPECT_FALSE(spin_profile != spin_profile);
EXPECT_FALSE(spin_profile == adobe_profile);
EXPECT_TRUE(spin_profile != adobe_profile);
gfx::ColorSpace spin_space = spin_profile.GetColorSpace();
gfx::ColorSpace adobe_space = adobe_profile.GetColorSpace();
EXPECT_TRUE(spin_space == spin_space);
EXPECT_FALSE(spin_space != spin_space);
EXPECT_FALSE(spin_space == adobe_space);
EXPECT_TRUE(spin_space != adobe_space);
ICCProfile temp = ICCProfile::FromCacheMac(spin_space);
EXPECT_TRUE(temp.IsValid());
EXPECT_TRUE(spin_profile == temp);
EXPECT_FALSE(spin_profile != temp);
temp = ICCProfile::FromCacheMac(adobe_space);
EXPECT_TRUE(temp.IsValid());
EXPECT_FALSE(spin_profile == temp);
EXPECT_TRUE(spin_profile != temp);
EXPECT_TRUE(!!spin_space.ToSkColorSpace());
EXPECT_TRUE(!!adobe_space.ToSkColorSpace());
EXPECT_FALSE(SkColorSpace::Equals(
spin_space.ToSkColorSpace().get(),
adobe_space.ToSkColorSpace().get()));
}
TEST(ICCProfile, ParametricVersusExactInaccurate) {
// This ICC profile has three transfer functions that differ enough that the
// parametric color space is considered inaccurate.
ICCProfile multi_tr_fn = ICCProfileForTestingNoAnalyticTrFn();
EXPECT_NE(multi_tr_fn.GetColorSpace(), multi_tr_fn.GetParametricColorSpace());
// Fails to get parametric color space because the space is not parametric.
ICCProfile profile;
profile = ICCProfile::FromParametricColorSpace(multi_tr_fn.GetColorSpace());
EXPECT_FALSE(profile.IsValid());
// The Mac cache does not find the parametric approximation, because the cache
// only has the original.
profile = ICCProfile::FromCacheMac(multi_tr_fn.GetParametricColorSpace());
EXPECT_FALSE(profile.IsValid());
// The Mac cache does find the original.
profile = ICCProfile::FromCacheMac(multi_tr_fn.GetColorSpace());
EXPECT_TRUE(profile.IsValid());
EXPECT_EQ(profile, multi_tr_fn);
// We are capable of generating a parametric approximation.
profile = ICCProfile::FromParametricColorSpace(
multi_tr_fn.GetParametricColorSpace());
EXPECT_TRUE(profile.IsValid());
EXPECT_NE(profile, multi_tr_fn);
}
TEST(ICCProfile, ParametricVersusExactOvershoot) {
// This ICC profile has a transfer function with T(1) that is greater than 1
// in the approximation, but is still close enough to be considered accurate.
ICCProfile overshoot = ICCProfileForTestingOvershoot();
EXPECT_EQ(overshoot.GetColorSpace(), overshoot.GetParametricColorSpace());
ICCProfile profile;
profile = ICCProfile::FromCacheMac(overshoot.GetColorSpace());
EXPECT_TRUE(profile.IsValid());
EXPECT_EQ(profile, overshoot);
profile = ICCProfile::FromParametricColorSpace(overshoot.GetColorSpace());
EXPECT_TRUE(profile.IsValid());
EXPECT_NE(profile, overshoot);
}
TEST(ICCProfile, ParametricVersusExactAdobe) {
// This ICC profile is precisely represented by the parametric color space.
ICCProfile accurate = ICCProfileForTestingAdobeRGB();
EXPECT_EQ(accurate.GetColorSpace(), accurate.GetParametricColorSpace());
ICCProfile profile;
profile = ICCProfile::FromCacheMac(accurate.GetColorSpace());
EXPECT_TRUE(profile.IsValid());
EXPECT_EQ(profile, accurate);
profile = ICCProfile::FromParametricColorSpace(accurate.GetColorSpace());
EXPECT_TRUE(profile.IsValid());
EXPECT_NE(profile, accurate);
}
TEST(ICCProfile, ParametricVersusExactA2B) {
// This ICC profile has only an A2B representation. We cannot create an
// SkColorSpaceXform to A2B only ICC profiles, so this should be marked
// as invalid.
ICCProfile a2b = ICCProfileForTestingA2BOnly();
EXPECT_FALSE(a2b.GetColorSpace().IsValid());
// Even though it is invalid, it should not be equal to the empty constructor.
EXPECT_NE(a2b, gfx::ICCProfile());
}
TEST(ICCProfile, GarbageData) {
std::vector<char> bad_data(10 * 1024);
const char* bad_data_string = "deadbeef";
for (size_t i = 0; i < bad_data.size(); ++i)
bad_data[i] = bad_data_string[i % 8];
ICCProfile garbage_profile =
ICCProfile::FromData(bad_data.data(), bad_data.size());
EXPECT_FALSE(garbage_profile.IsValid());
EXPECT_FALSE(garbage_profile.GetColorSpace().IsValid());
EXPECT_FALSE(garbage_profile.GetParametricColorSpace().IsValid());
ICCProfile default_ctor_profile;
EXPECT_FALSE(default_ctor_profile.IsValid());
EXPECT_FALSE(default_ctor_profile.GetColorSpace().IsValid());
EXPECT_FALSE(default_ctor_profile.GetParametricColorSpace().IsValid());
}
TEST(ICCProfile, GenericRGB) {
ColorSpace icc_profile = ICCProfileForTestingGenericRGB().GetColorSpace();
ColorSpace color_space(ColorSpace::PrimaryID::APPLE_GENERIC_RGB,
ColorSpace::TransferID::GAMMA18);
SkMatrix44 icc_profile_matrix;
SkMatrix44 color_space_matrix;
icc_profile.GetPrimaryMatrix(&icc_profile_matrix);
color_space.GetPrimaryMatrix(&color_space_matrix);
SkMatrix44 eye;
icc_profile_matrix.invert(&eye);
eye.postConcat(color_space_matrix);
EXPECT_TRUE(SkMatrixIsApproximatelyIdentity(eye));
}
} // namespace gfx
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