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