| /* |
| * 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 "Resources.h" |
| #include "SkCodec.h" |
| #include "SkColorSpace.h" |
| #include "SkColorSpace_XYZ.h" |
| #include "SkColorSpacePriv.h" |
| #include "Test.h" |
| |
| #include "png.h" |
| |
| 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[], |
| const SkGammaNamed expectedGamma) { |
| |
| REPORTER_ASSERT(r, nullptr != space); |
| REPORTER_ASSERT(r, expectedGamma == space->gammaNamed()); |
| |
| const SkMatrix44& mat = *space->toXYZD50(); |
| const float src[] = { |
| 1, 0, 0, 1, |
| 0, 1, 0, 1, |
| 0, 0, 1, 1, |
| }; |
| const float* ref[3] = { red, green, blue }; |
| float dst[4]; |
| for (int i = 0; i < 3; ++i) { |
| mat.mapScalars(&src[i*4], dst); |
| REPORTER_ASSERT(r, almost_equal(ref[i][0], dst[0])); |
| REPORTER_ASSERT(r, almost_equal(ref[i][1], dst[1])); |
| REPORTER_ASSERT(r, almost_equal(ref[i][2], dst[2])); |
| } |
| } |
| |
| static void test_path(skiatest::Reporter* r, const char* path, |
| const float red[], const float green[], const float blue[], |
| const SkGammaNamed expectedGamma) { |
| 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; |
| } |
| |
| SkColorSpace* colorSpace = codec->getInfo().colorSpace(); |
| test_space(r, colorSpace, red, green, blue, expectedGamma); |
| } |
| |
| static constexpr float g_sRGB_XYZ[]{ |
| 0.4358f, 0.3853f, 0.1430f, // Rx, Gx, Bx |
| 0.2224f, 0.7170f, 0.0606f, // Ry, Gy, Gz |
| 0.0139f, 0.0971f, 0.7139f, // Rz, Gz, Bz |
| }; |
| |
| 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, SkColorSpace::MakeSRGB().get(), |
| g_sRGB_R, g_sRGB_G, g_sRGB_B, kSRGB_SkGammaNamed); |
| |
| } |
| |
| 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, |
| kSRGB_SkGammaNamed); |
| #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, k2Dot2Curve_SkGammaNamed); |
| |
| test_path(r, "images/webp-color-profile-crash.webp", |
| red, green, blue, kNonStandard_SkGammaNamed); |
| test_path(r, "images/webp-color-profile-lossless.webp", |
| red, green, blue, kNonStandard_SkGammaNamed); |
| test_path(r, "images/webp-color-profile-lossy.webp", |
| red, green, blue, kNonStandard_SkGammaNamed); |
| test_path(r, "images/webp-color-profile-lossy-alpha.webp", |
| red, green, blue, kNonStandard_SkGammaNamed); |
| } |
| |
| DEF_TEST(ColorSpaceSRGBCompare, r) { |
| // Create an sRGB color space by name |
| sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::MakeSRGB(); |
| |
| // Create an sRGB color space by value |
| SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor); |
| srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ); |
| sk_sp<SkColorSpace> rgbColorSpace = |
| SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50); |
| REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace); |
| |
| SkColorSpaceTransferFn srgbFn; |
| srgbFn.fA = (1.0f / 1.055f); |
| srgbFn.fB = (0.055f / 1.055f); |
| srgbFn.fC = (1.0f / 12.92f); |
| srgbFn.fD = 0.04045f; |
| srgbFn.fE = 0.0f; |
| srgbFn.fF = 0.0f; |
| srgbFn.fG = 2.4f; |
| sk_sp<SkColorSpace> rgbColorSpace2 = SkColorSpace::MakeRGB(srgbFn, srgbToxyzD50); |
| REPORTER_ASSERT(r, rgbColorSpace2 == namedColorSpace); |
| |
| // Change a single value from the sRGB matrix |
| srgbToxyzD50.set(2, 2, 0.5f); |
| sk_sp<SkColorSpace> strangeColorSpace = |
| SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50); |
| REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace); |
| } |
| |
| DEF_TEST(ColorSpaceSRGBLinearCompare, r) { |
| // Create the linear sRGB color space by name |
| sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::MakeSRGBLinear(); |
| |
| // Create the linear sRGB color space via the sRGB color space's makeLinearGamma() |
| auto srgb = SkColorSpace::MakeSRGB(); |
| auto srgbXYZ = static_cast<SkColorSpace_XYZ*>(srgb.get()); |
| sk_sp<SkColorSpace> viaSrgbColorSpace = srgbXYZ->makeLinearGamma(); |
| REPORTER_ASSERT(r, namedColorSpace == viaSrgbColorSpace); |
| |
| // Create a linear sRGB color space by value |
| SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor); |
| srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ); |
| sk_sp<SkColorSpace> rgbColorSpace = |
| SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50); |
| REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace); |
| |
| SkColorSpaceTransferFn linearExpFn; |
| linearExpFn.fA = 1.0f; |
| linearExpFn.fB = 0.0f; |
| linearExpFn.fC = 0.0f; |
| linearExpFn.fD = 0.0f; |
| linearExpFn.fE = 0.0f; |
| linearExpFn.fF = 0.0f; |
| linearExpFn.fG = 1.0f; |
| sk_sp<SkColorSpace> rgbColorSpace2 = SkColorSpace::MakeRGB(linearExpFn, srgbToxyzD50); |
| REPORTER_ASSERT(r, rgbColorSpace2 == namedColorSpace); |
| |
| SkColorSpaceTransferFn linearFn; |
| linearFn.fA = 0.0f; |
| linearFn.fB = 0.0f; |
| linearFn.fC = 1.0f; |
| linearFn.fD = 1.0f; |
| linearFn.fE = 0.0f; |
| linearFn.fF = 0.0f; |
| linearFn.fG = 0.0f; |
| sk_sp<SkColorSpace> rgbColorSpace3 = SkColorSpace::MakeRGB(linearFn, srgbToxyzD50); |
| REPORTER_ASSERT(r, rgbColorSpace3 == namedColorSpace); |
| |
| // Change a single value from the sRGB matrix |
| srgbToxyzD50.set(2, 2, 0.5f); |
| sk_sp<SkColorSpace> strangeColorSpace = |
| SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50); |
| REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace); |
| } |
| |
| static void test_serialize(skiatest::Reporter* r, 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 == newSpace1.get()); |
| REPORTER_ASSERT(r, space == newSpace2.get()); |
| } else { |
| REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace1.get())); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace2.get())); |
| } |
| } |
| |
| DEF_TEST(ColorSpace_Serialize, r) { |
| test_serialize(r, SkColorSpace::MakeSRGB().get(), true); |
| test_serialize(r, SkColorSpace::MakeSRGBLinear().get(), true); |
| |
| sk_sp<SkData> monitorData = GetResourceAsData("icc_profiles/HP_ZR30w.icc"); |
| test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false); |
| monitorData = GetResourceAsData("icc_profiles/HP_Z32x.icc"); |
| test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false); |
| monitorData = GetResourceAsData("icc_profiles/upperLeft.icc"); |
| test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false); |
| monitorData = GetResourceAsData("icc_profiles/upperRight.icc"); |
| test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false); |
| |
| SkColorSpaceTransferFn fn; |
| fn.fA = 1.0f; |
| fn.fB = 0.0f; |
| fn.fC = 1.0f; |
| fn.fD = 0.5f; |
| fn.fE = 0.0f; |
| fn.fF = 0.0f; |
| fn.fG = 1.0f; |
| SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor); |
| test_serialize(r, SkColorSpace::MakeRGB(fn, toXYZ).get(), false); |
| } |
| |
| DEF_TEST(ColorSpace_Equals, r) { |
| sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB(); |
| sk_sp<SkData> data = GetResourceAsData("icc_profiles/HP_ZR30w.icc"); |
| sk_sp<SkColorSpace> z30 = SkColorSpace::MakeICC(data->data(), data->size()); |
| data = GetResourceAsData("icc_profiles/HP_Z32x.icc"); |
| sk_sp<SkColorSpace> z32 = SkColorSpace::MakeICC(data->data(), data->size()); |
| data = GetResourceAsData("icc_profiles/upperLeft.icc"); |
| sk_sp<SkColorSpace> upperLeft = SkColorSpace::MakeICC(data->data(), data->size()); |
| data = GetResourceAsData("icc_profiles/upperRight.icc"); |
| sk_sp<SkColorSpace> upperRight = SkColorSpace::MakeICC(data->data(), data->size()); |
| |
| SkColorSpaceTransferFn fn; |
| fn.fA = 1.0f; |
| fn.fB = 0.0f; |
| fn.fC = 1.0f; |
| fn.fD = 0.5f; |
| fn.fE = 0.0f; |
| fn.fF = 0.0f; |
| fn.fG = 1.0f; |
| SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor); |
| 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(upperLeft.get(), upperLeft.get())); |
| REPORTER_ASSERT(r, SkColorSpace::Equals(upperRight.get(), upperRight.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(upperLeft.get(), srgb.get())); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), upperRight.get())); |
| REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), upperRight.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 SkMatrix44& a, const SkMatrix44& b) { |
| return almost_equal(a.get(0, 0), b.get(0, 0)) && |
| almost_equal(a.get(0, 1), b.get(0, 1)) && |
| almost_equal(a.get(0, 2), b.get(0, 2)) && |
| almost_equal(a.get(0, 3), b.get(0, 3)) && |
| almost_equal(a.get(1, 0), b.get(1, 0)) && |
| almost_equal(a.get(1, 1), b.get(1, 1)) && |
| almost_equal(a.get(1, 2), b.get(1, 2)) && |
| almost_equal(a.get(1, 3), b.get(1, 3)) && |
| almost_equal(a.get(2, 0), b.get(2, 0)) && |
| almost_equal(a.get(2, 1), b.get(2, 1)) && |
| almost_equal(a.get(2, 2), b.get(2, 2)) && |
| almost_equal(a.get(2, 3), b.get(2, 3)) && |
| almost_equal(a.get(3, 0), b.get(3, 0)) && |
| almost_equal(a.get(3, 1), b.get(3, 1)) && |
| almost_equal(a.get(3, 2), b.get(3, 2)) && |
| almost_equal(a.get(3, 3), b.get(3, 3)); |
| } |
| |
| static inline void check_primaries(skiatest::Reporter* r, const SkColorSpacePrimaries& primaries, |
| const SkMatrix44& reference) { |
| SkMatrix44 toXYZ(SkMatrix44::kUninitialized_Constructor); |
| 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) |
| SkColorSpacePrimaries srgb; |
| srgb.fRX = 0.64f; |
| srgb.fRY = 0.33f; |
| srgb.fGX = 0.30f; |
| srgb.fGY = 0.60f; |
| srgb.fBX = 0.15f; |
| srgb.fBY = 0.06f; |
| srgb.fWX = 0.3127f; |
| srgb.fWY = 0.3290f; |
| SkMatrix44 srgbToXYZ(SkMatrix44::kUninitialized_Constructor); |
| bool result = srgb.toXYZD50(&srgbToXYZ); |
| REPORTER_ASSERT(r, result); |
| |
| sk_sp<SkColorSpace> space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, |
| 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; |
| SkMatrix44 proToXYZ(SkMatrix44::kUninitialized_Constructor); |
| proToXYZ.set3x3(0.7976749f, 0.2880402f, 0.0000000f, |
| 0.1351917f, 0.7118741f, 0.0000000f, |
| 0.0313534f, 0.0000857f, 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; |
| SkMatrix44 ntscToXYZ(SkMatrix44::kUninitialized_Constructor); |
| ntscToXYZ.set3x3(0.6343706f, 0.3109496f, -0.0011817f, |
| 0.1852204f, 0.5915984f, 0.0555518f, |
| 0.1446290f, 0.0974520f, 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(SkColorSpace::kSRGB_RenderTargetGamma, |
| SkColorSpace::kDCIP3_D65_Gamut); |
| SkMatrix44 reference(SkMatrix44::kUninitialized_Constructor); |
| 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(SkColorSpace::kSRGB_RenderTargetGamma, |
| SkColorSpace::kRec2020_Gamut); |
| SkAssertResult(space->toXYZD50(&reference)); |
| check_primaries(r, rec2020, reference); |
| } |
| |
| DEF_TEST(ColorSpace_InvalidICC, r) { |
| // This color space has a matrix that is not D50. |
| sk_sp<SkData> data = GetResourceAsData("icc_profiles/SM2333SW.icc"); |
| if (!data) { |
| return; |
| } |
| sk_sp<SkColorSpace> cs = SkColorSpace::MakeICC(data->data(), data->size()); |
| REPORTER_ASSERT(r, !cs); |
| |
| // The color space has a color lut with only one entry in each dimension. |
| data = GetResourceAsData("icc_profiles/invalid_color_lut.icc"); |
| if (!data) { |
| return; |
| } |
| |
| cs = SkColorSpace::MakeICC(data->data(), data->size()); |
| REPORTER_ASSERT(r, !cs); |
| } |
| |
| DEF_TEST(ColorSpace_MatrixHash, r) { |
| sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB(); |
| |
| SkColorSpaceTransferFn fn; |
| fn.fA = 1.0f; |
| fn.fB = 0.0f; |
| fn.fC = 0.0f; |
| fn.fD = 0.0f; |
| fn.fE = 0.0f; |
| fn.fF = 0.0f; |
| fn.fG = 3.0f; |
| |
| SkMatrix44 srgbMat(SkMatrix44::kUninitialized_Constructor); |
| srgbMat.set3x3RowMajorf(gSRGB_toXYZD50); |
| sk_sp<SkColorSpace> strange = SkColorSpace::MakeRGB(fn, srgbMat); |
| |
| REPORTER_ASSERT(r, *srgb->toXYZD50() == *strange->toXYZD50()); |
| REPORTER_ASSERT(r, srgb->toXYZD50Hash() == strange->toXYZD50Hash()); |
| } |
| |
| DEF_TEST(ColorSpace_IsSRGB, r) { |
| sk_sp<SkColorSpace> srgb0 = SkColorSpace::MakeSRGB(); |
| |
| SkColorSpaceTransferFn fn; |
| fn.fA = 1.0f; |
| fn.fB = 0.0f; |
| fn.fC = 0.0f; |
| fn.fD = 0.0f; |
| fn.fE = 0.0f; |
| fn.fF = 0.0f; |
| fn.fG = 2.2f; |
| sk_sp<SkColorSpace> twoDotTwo = SkColorSpace::MakeRGB(fn, SkColorSpace::kSRGB_Gamut); |
| |
| REPORTER_ASSERT(r, srgb0->isSRGB()); |
| REPORTER_ASSERT(r, !twoDotTwo->isSRGB()); |
| } |
