| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/codec/SkCodec.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkData.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkStream.h" |
| #include "include/core/SkTypes.h" |
| #include "include/third_party/skcms/skcms.h" |
| #include "src/core/SkColorSpacePriv.h" |
| #include "tests/Test.h" |
| #include "tools/Resources.h" |
| |
| #include <png.h> |
| |
| #include <string.h> |
| #include <memory> |
| #include <utility> |
| |
| static bool almost_equal(float a, float b) { |
| return SkTAbs(a - b) < 0.001f; |
| } |
| |
| static void test_space(skiatest::Reporter* r, SkColorSpace* space, |
| const float red[], const float green[], const float blue[], |
| bool expectSRGB = false) { |
| |
| REPORTER_ASSERT(r, nullptr != space); |
| REPORTER_ASSERT(r, expectSRGB == space->gammaCloseToSRGB()); |
| |
| skcms_Matrix3x3 mat; |
| space->toXYZD50(&mat); |
| const float* ref[3] = { red, green, blue }; |
| for (int i = 0; i < 3; ++i) { |
| REPORTER_ASSERT(r, almost_equal(ref[i][0], mat.vals[0][i])); |
| REPORTER_ASSERT(r, almost_equal(ref[i][1], mat.vals[1][i])); |
| REPORTER_ASSERT(r, almost_equal(ref[i][2], mat.vals[2][i])); |
| } |
| } |
| |
| static void test_path(skiatest::Reporter* r, const char* path, |
| const float red[], const float green[], const float blue[], |
| bool expectSRGB = false) { |
| std::unique_ptr<SkStream> stream(GetResourceAsStream(path)); |
| REPORTER_ASSERT(r, nullptr != stream); |
| if (!stream) { |
| return; |
| } |
| |
| std::unique_ptr<SkCodec> codec(SkCodec::MakeFromStream(std::move(stream))); |
| REPORTER_ASSERT(r, nullptr != codec); |
| if (!codec) { |
| return; |
| } |
| |
| auto colorSpace = codec->getInfo().refColorSpace(); |
| test_space(r, colorSpace.get(), red, green, blue, expectSRGB); |
| } |
| |
| static constexpr float g_sRGB_R[]{ 0.4358f, 0.2224f, 0.0139f }; |
| static constexpr float g_sRGB_G[]{ 0.3853f, 0.7170f, 0.0971f }; |
| static constexpr float g_sRGB_B[]{ 0.1430f, 0.0606f, 0.7139f }; |
| |
| DEF_TEST(ColorSpace_sRGB, r) { |
| test_space(r, sk_srgb_singleton(), g_sRGB_R, g_sRGB_G, g_sRGB_B, true); |
| |
| } |
| |
| DEF_TEST(ColorSpaceParseICCProfiles, r) { |
| |
| #if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6) |
| test_path(r, "images/color_wheel_with_profile.png", g_sRGB_R, g_sRGB_G, g_sRGB_B, true); |
| #endif |
| |
| const float red[] = { 0.385117f, 0.716904f, 0.0970612f }; |
| const float green[] = { 0.143051f, 0.0606079f, 0.713913f }; |
| const float blue[] = { 0.436035f, 0.222488f, 0.013916f }; |
| test_path(r, "images/icc-v2-gbr.jpg", red, green, blue); |
| |
| test_path(r, "images/webp-color-profile-crash.webp", |
| red, green, blue); |
| test_path(r, "images/webp-color-profile-lossless.webp", |
| red, green, blue); |
| test_path(r, "images/webp-color-profile-lossy.webp", |
| red, green, blue); |
| test_path(r, "images/webp-color-profile-lossy-alpha.webp", |
| red, green, blue); |
| } |
| |
| static void test_serialize(skiatest::Reporter* r, sk_sp<SkColorSpace> space, bool isNamed) { |
| sk_sp<SkData> data1 = space->serialize(); |
| |
| size_t bytes = space->writeToMemory(nullptr); |
| sk_sp<SkData> data2 = SkData::MakeUninitialized(bytes); |
| space->writeToMemory(data2->writable_data()); |
| |
| sk_sp<SkColorSpace> newSpace1 = SkColorSpace::Deserialize(data1->data(), data1->size()); |
| sk_sp<SkColorSpace> newSpace2 = SkColorSpace::Deserialize(data2->data(), data2->size()); |
| |
| if (isNamed) { |
| REPORTER_ASSERT(r, space.get() == newSpace1.get()); |
| REPORTER_ASSERT(r, space.get() == newSpace2.get()); |
| } else { |
| REPORTER_ASSERT(r, SkColorSpace::Equals(space.get(), newSpace1.get())); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(space.get(), newSpace2.get())); |
| } |
| } |
| |
| DEF_TEST(ColorSpace_Serialize, r) { |
| test_serialize(r, SkColorSpace::MakeSRGB(), true); |
| test_serialize(r, SkColorSpace::MakeSRGBLinear(), true); |
| |
| auto test = [&](const char* path) { |
| sk_sp<SkData> data = GetResourceAsData(path); |
| |
| skcms_ICCProfile profile; |
| REPORTER_ASSERT(r, skcms_Parse(data->data(), data->size(), &profile)); |
| |
| sk_sp<SkColorSpace> space = SkColorSpace::Make(profile); |
| REPORTER_ASSERT(r, space); |
| |
| test_serialize(r, space, false); |
| }; |
| test("icc_profiles/HP_ZR30w.icc"); |
| test("icc_profiles/HP_Z32x.icc"); |
| |
| skcms_TransferFunction fn; |
| fn.a = 1.0f; |
| fn.b = 0.0f; |
| fn.c = 1.0f; |
| fn.d = 0.5f; |
| fn.e = 0.0f; |
| fn.f = 0.0f; |
| fn.g = 1.0f; |
| skcms_Matrix3x3 toXYZ = {{ |
| { 1, 0, 0 }, |
| { 0, 1, 0 }, |
| { 0, 0, 1 }, |
| }}; |
| test_serialize(r, SkColorSpace::MakeRGB(fn, toXYZ), false); |
| } |
| |
| DEF_TEST(ColorSpace_Equals, r) { |
| sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB(); |
| |
| auto parse = [&](const char* path) { |
| sk_sp<SkData> data = GetResourceAsData(path); |
| |
| skcms_ICCProfile profile; |
| REPORTER_ASSERT(r, skcms_Parse(data->data(), data->size(), &profile)); |
| |
| sk_sp<SkColorSpace> space = SkColorSpace::Make(profile); |
| REPORTER_ASSERT(r, space); |
| |
| return space; |
| }; |
| sk_sp<SkColorSpace> z30 = parse("icc_profiles/HP_ZR30w.icc"); |
| sk_sp<SkColorSpace> z32 = parse("icc_profiles/HP_Z32x.icc"); |
| |
| skcms_TransferFunction fn; |
| fn.a = 1.0f; |
| fn.b = 0.0f; |
| fn.c = 1.0f; |
| fn.d = 0.5f; |
| fn.e = 0.0f; |
| fn.f = 0.0f; |
| fn.g = 1.0f; |
| skcms_Matrix3x3 toXYZ = {{ |
| { 1, 0, 0 }, |
| { 0, 1, 0 }, |
| { 0, 0, 1 }, |
| }}; |
| sk_sp<SkColorSpace> rgb4 = SkColorSpace::MakeRGB(fn, toXYZ); |
| |
| REPORTER_ASSERT(r, SkColorSpace::Equals(nullptr, nullptr)); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(srgb.get(), srgb.get())); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(z30.get(), z30.get())); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(z32.get(), z32.get())); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(rgb4.get(), rgb4.get())); |
| |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(nullptr, srgb.get())); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), nullptr)); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), srgb.get())); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(z32.get(), z30.get())); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), rgb4.get())); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), rgb4.get())); |
| } |
| |
| static inline bool matrix_almost_equal(const skcms_Matrix3x3& a, const skcms_Matrix3x3& b) { |
| for (int r = 0; r < 3; ++r) { |
| for (int c = 0; c < 3; ++c) { |
| if (!almost_equal(a.vals[r][c], b.vals[r][c])) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| static inline void check_primaries(skiatest::Reporter* r, const SkColorSpacePrimaries& primaries, |
| const skcms_Matrix3x3& reference) { |
| skcms_Matrix3x3 toXYZ; |
| bool result = primaries.toXYZD50(&toXYZ); |
| REPORTER_ASSERT(r, result); |
| REPORTER_ASSERT(r, matrix_almost_equal(toXYZ, reference)); |
| } |
| |
| DEF_TEST(ColorSpace_Primaries, r) { |
| // sRGB primaries (D65) |
| skcms_Matrix3x3 srgbToXYZ; |
| bool result = skcms_PrimariesToXYZD50( |
| 0.64f, 0.33f, |
| 0.30f, 0.60f, |
| 0.15f, 0.06f, |
| 0.3127f, 0.3290f, |
| &srgbToXYZ); |
| REPORTER_ASSERT(r, result); |
| |
| sk_sp<SkColorSpace> space = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, srgbToXYZ); |
| REPORTER_ASSERT(r, SkColorSpace::MakeSRGB() == space); |
| |
| // ProPhoto (D50) |
| SkColorSpacePrimaries proPhoto; |
| proPhoto.fRX = 0.7347f; |
| proPhoto.fRY = 0.2653f; |
| proPhoto.fGX = 0.1596f; |
| proPhoto.fGY = 0.8404f; |
| proPhoto.fBX = 0.0366f; |
| proPhoto.fBY = 0.0001f; |
| proPhoto.fWX = 0.34567f; |
| proPhoto.fWY = 0.35850f; |
| skcms_Matrix3x3 proToXYZ = {{ |
| { 0.7976749f, 0.1351917f, 0.0313534f }, |
| { 0.2880402f, 0.7118741f, 0.0000857f }, |
| { 0.0000000f, 0.0000000f, 0.8252100f }, |
| }}; |
| check_primaries(r, proPhoto, proToXYZ); |
| |
| // NTSC (C) |
| SkColorSpacePrimaries ntsc; |
| ntsc.fRX = 0.67f; |
| ntsc.fRY = 0.33f; |
| ntsc.fGX = 0.21f; |
| ntsc.fGY = 0.71f; |
| ntsc.fBX = 0.14f; |
| ntsc.fBY = 0.08f; |
| ntsc.fWX = 0.31006f; |
| ntsc.fWY = 0.31616f; |
| skcms_Matrix3x3 ntscToXYZ = {{ |
| { 0.6343706f, 0.1852204f, 0.1446290f }, |
| { 0.3109496f, 0.5915984f, 0.0974520f }, |
| { -0.0011817f, 0.0555518f, 0.7708399f } |
| }}; |
| check_primaries(r, ntsc, ntscToXYZ); |
| |
| // DCI P3 (D65) |
| SkColorSpacePrimaries p3; |
| p3.fRX = 0.680f; |
| p3.fRY = 0.320f; |
| p3.fGX = 0.265f; |
| p3.fGY = 0.690f; |
| p3.fBX = 0.150f; |
| p3.fBY = 0.060f; |
| p3.fWX = 0.3127f; |
| p3.fWY = 0.3290f; |
| space = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kDisplayP3); |
| skcms_Matrix3x3 reference; |
| SkAssertResult(space->toXYZD50(&reference)); |
| check_primaries(r, p3, reference); |
| |
| // Rec 2020 (D65) |
| SkColorSpacePrimaries rec2020; |
| rec2020.fRX = 0.708f; |
| rec2020.fRY = 0.292f; |
| rec2020.fGX = 0.170f; |
| rec2020.fGY = 0.797f; |
| rec2020.fBX = 0.131f; |
| rec2020.fBY = 0.046f; |
| rec2020.fWX = 0.3127f; |
| rec2020.fWY = 0.3290f; |
| space = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kRec2020); |
| SkAssertResult(space->toXYZD50(&reference)); |
| check_primaries(r, rec2020, reference); |
| } |
| |
| DEF_TEST(ColorSpace_MatrixHash, r) { |
| sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB(); |
| |
| skcms_TransferFunction fn; |
| fn.a = 1.0f; |
| fn.b = 0.0f; |
| fn.c = 0.0f; |
| fn.d = 0.0f; |
| fn.e = 0.0f; |
| fn.f = 0.0f; |
| fn.g = 3.0f; |
| |
| sk_sp<SkColorSpace> strange = SkColorSpace::MakeRGB(fn, SkNamedGamut::kSRGB); |
| |
| REPORTER_ASSERT(r, srgb->toXYZD50Hash() == strange->toXYZD50Hash()); |
| } |
| |
| DEF_TEST(ColorSpace_IsSRGB, r) { |
| sk_sp<SkColorSpace> srgb0 = SkColorSpace::MakeSRGB(); |
| |
| skcms_TransferFunction fn; |
| fn.a = 1.0f; |
| fn.b = 0.0f; |
| fn.c = 0.0f; |
| fn.d = 0.0f; |
| fn.e = 0.0f; |
| fn.f = 0.0f; |
| fn.g = 2.2f; |
| sk_sp<SkColorSpace> twoDotTwo = SkColorSpace::MakeRGB(fn, SkNamedGamut::kSRGB); |
| |
| REPORTER_ASSERT(r, srgb0->isSRGB()); |
| REPORTER_ASSERT(r, !twoDotTwo->isSRGB()); |
| } |
| |
| DEF_TEST(ColorSpace_skcms_IsSRGB, r) { |
| sk_sp<SkColorSpace> srgb = SkColorSpace::Make(*skcms_sRGB_profile()); |
| REPORTER_ASSERT(r, srgb->isSRGB()); |
| } |
| |
| DEF_TEST(ColorSpace_skcms_sRGB_exact, r) { |
| skcms_ICCProfile profile; |
| sk_srgb_singleton()->toProfile(&profile); |
| |
| REPORTER_ASSERT(r, 0 == memcmp(&profile, skcms_sRGB_profile(), sizeof(skcms_ICCProfile))); |
| } |
| |
| DEF_TEST(ColorSpace_classifyUnderflow, r) { |
| // crbug.com/1016183 |
| skcms_TransferFunction fn; |
| fn.a = 1.0f; |
| fn.b = 0.0f; |
| fn.c = 0.0f; |
| fn.d = 0.0f; |
| fn.e = 0.0f; |
| fn.f = 0.0f; |
| fn.g = INT_MIN; |
| sk_sp<SkColorSpace> bad = SkColorSpace::MakeRGB(fn, SkNamedGamut::kSRGB); |
| REPORTER_ASSERT(r, bad == nullptr); |
| } |
| |
| DEF_TEST(ColorSpace_equiv, r) { |
| skcms_TransferFunction tf = SkNamedTransferFn::kSRGB; |
| skcms_Matrix3x3 gamut = SkNamedGamut::kSRGB; |
| |
| // Previously a NaN anywhere in the tf or gamut would trip up Equals(), |
| // making us think we'd hit a hash collision where we hadn't. |
| gamut.vals[1][1] = SK_FloatNaN; |
| |
| // There's a quick pointer comparison in SkColorSpace::Equals() we want to get past. |
| sk_sp<SkColorSpace> x = SkColorSpace::MakeRGB(tf, gamut), |
| y = SkColorSpace::MakeRGB(tf, gamut); |
| REPORTER_ASSERT(r, x && y); |
| REPORTER_ASSERT(r, x.get() != y.get()); |
| |
| // Most important to test in debug mode that we don't SkASSERT(). |
| REPORTER_ASSERT(r, SkColorSpace::Equals(x.get(), y.get())); |
| } |