c434f5122a
Necessary because PNGs like to specify their gamma this way. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3402 Change-Id: I399984d611db907b115b345df1afc88d39326fbb Reviewed-on: https://skia-review.googlesource.com/3402 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Matt Sarett <msarett@google.com>
316 lines
13 KiB
C++
316 lines
13 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 "Resources.h"
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#include "SkCodec.h"
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#include "SkColorSpace.h"
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#include "SkColorSpace_Base.h"
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#include "Test.h"
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#include "png.h"
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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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const SkGammaNamed expectedGamma) {
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REPORTER_ASSERT(r, nullptr != space);
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REPORTER_ASSERT(r, expectedGamma == as_CSB(space)->gammaNamed());
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const SkMatrix44& mat = as_CSB(space)->toXYZD50();
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const float src[] = {
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1, 0, 0, 1,
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0, 1, 0, 1,
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0, 0, 1, 1,
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};
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const float* ref[3] = { red, green, blue };
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float dst[4];
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for (int i = 0; i < 3; ++i) {
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mat.mapScalars(&src[i*4], dst);
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REPORTER_ASSERT(r, almost_equal(ref[i][0], dst[0]));
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REPORTER_ASSERT(r, almost_equal(ref[i][1], dst[1]));
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REPORTER_ASSERT(r, almost_equal(ref[i][2], dst[2]));
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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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const SkGammaNamed expectedGamma) {
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SkAutoTDelete<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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SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
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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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SkColorSpace* colorSpace = codec->getInfo().colorSpace();
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test_space(r, colorSpace, red, green, blue, expectedGamma);
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}
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static constexpr float g_sRGB_XYZ[]{
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0.4358f, 0.3853f, 0.1430f, // Rx, Gx, Bx
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0.2224f, 0.7170f, 0.0606f, // Ry, Gy, Gz
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0.0139f, 0.0971f, 0.7139f, // Rz, Gz, Bz
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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, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named).get(),
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g_sRGB_R, g_sRGB_G, g_sRGB_B, kSRGB_SkGammaNamed);
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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, "color_wheel_with_profile.png", g_sRGB_R, g_sRGB_G, g_sRGB_B,
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kSRGB_SkGammaNamed);
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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, "icc-v2-gbr.jpg", red, green, blue, k2Dot2Curve_SkGammaNamed);
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test_path(r, "webp-color-profile-crash.webp",
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red, green, blue, kNonStandard_SkGammaNamed);
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test_path(r, "webp-color-profile-lossless.webp",
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red, green, blue, kNonStandard_SkGammaNamed);
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test_path(r, "webp-color-profile-lossy.webp",
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red, green, blue, kNonStandard_SkGammaNamed);
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test_path(r, "webp-color-profile-lossy-alpha.webp",
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red, green, blue, kNonStandard_SkGammaNamed);
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}
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DEF_TEST(ColorSpaceSRGBCompare, r) {
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// Create an sRGB color space by name
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sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
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// Create an sRGB color space by value
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SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor);
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srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ);
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sk_sp<SkColorSpace> rgbColorSpace =
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SkColorSpace::NewRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50);
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REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
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// Change a single value from the sRGB matrix
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srgbToxyzD50.set(2, 2, 0.5f);
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sk_sp<SkColorSpace> strangeColorSpace =
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SkColorSpace::NewRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50);
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REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
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}
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DEF_TEST(ColorSpaceSRGBLinearCompare, r) {
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// Create the linear sRGB color space by name
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sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGBLinear_Named);
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// Create the linear sRGB color space via the sRGB color space's makeLinearGamma()
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sk_sp<SkColorSpace> viaSrgbColorSpace =
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as_CSB(SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named))->makeLinearGamma();
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REPORTER_ASSERT(r, namedColorSpace == viaSrgbColorSpace);
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// Create a linear sRGB color space by value
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SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor);
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srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ);
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sk_sp<SkColorSpace> rgbColorSpace =
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SkColorSpace::NewRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50);
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REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
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// Change a single value from the sRGB matrix
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srgbToxyzD50.set(2, 2, 0.5f);
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sk_sp<SkColorSpace> strangeColorSpace =
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SkColorSpace::NewRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50);
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REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
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}
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class ColorSpaceTest {
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public:
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static sk_sp<SkData> WriteToICC(SkColorSpace* space) {
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return as_CSB(space)->writeToICC();
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}
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};
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DEF_TEST(ColorSpaceWriteICC, r) {
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// Test writing a new ICC profile
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sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
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sk_sp<SkData> namedData = ColorSpaceTest::WriteToICC(namedColorSpace.get());
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sk_sp<SkColorSpace> iccColorSpace = SkColorSpace::NewICC(namedData->data(), namedData->size());
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test_space(r, iccColorSpace.get(), g_sRGB_R, g_sRGB_G, g_sRGB_B, k2Dot2Curve_SkGammaNamed);
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// FIXME (msarett): Test disabled. sRGB profiles are written approximately as 2.2f curves.
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// REPORTER_ASSERT(r, iccColorSpace == namedColorSpace);
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// Test saving the original ICC data
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sk_sp<SkData> monitorData = SkData::MakeFromFileName(
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GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
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REPORTER_ASSERT(r, monitorData);
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if (!monitorData) {
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return;
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}
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sk_sp<SkColorSpace> monitorSpace = SkColorSpace::NewICC(monitorData->data(),
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monitorData->size());
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sk_sp<SkData> newMonitorData = ColorSpaceTest::WriteToICC(monitorSpace.get());
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sk_sp<SkColorSpace> newMonitorSpace = SkColorSpace::NewICC(newMonitorData->data(),
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newMonitorData->size());
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REPORTER_ASSERT(r, as_CSB(monitorSpace)->toXYZD50() == as_CSB(newMonitorSpace)->toXYZD50());
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REPORTER_ASSERT(r, as_CSB(monitorSpace)->gammaNamed() == as_CSB(newMonitorSpace)->gammaNamed());
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}
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DEF_TEST(ColorSpace_Named, r) {
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const struct {
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SkColorSpace::Named fNamed;
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SkGammaNamed fExpectedGamma;
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} recs[] {
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{ SkColorSpace::kSRGB_Named, kSRGB_SkGammaNamed },
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{ SkColorSpace::kAdobeRGB_Named, k2Dot2Curve_SkGammaNamed },
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{ SkColorSpace::kSRGBLinear_Named, kLinear_SkGammaNamed },
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};
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for (auto rec : recs) {
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auto cs = SkColorSpace::NewNamed(rec.fNamed);
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REPORTER_ASSERT(r, cs);
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if (cs) {
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REPORTER_ASSERT(r, rec.fExpectedGamma == as_CSB(cs)->gammaNamed());
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}
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}
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SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType);
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REPORTER_ASSERT(r, info.gammaCloseToSRGB());
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}
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static void test_serialize(skiatest::Reporter* r, 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 == newSpace1.get());
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REPORTER_ASSERT(r, space == newSpace2.get());
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} else {
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REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace1.get()));
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REPORTER_ASSERT(r, SkColorSpace::Equals(space, 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::NewNamed(SkColorSpace::kSRGB_Named).get(), true);
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test_serialize(r, SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named).get(), true);
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test_serialize(r, SkColorSpace::NewNamed(SkColorSpace::kSRGBLinear_Named).get(), true);
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sk_sp<SkData> monitorData = SkData::MakeFromFileName(
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GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
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test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
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monitorData = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
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test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
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monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
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test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
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monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
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test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
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const float gammas[] = { 1.1f, 1.2f, 1.7f, };
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SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
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test_serialize(r, SkColorSpace::NewRGB(gammas, toXYZ).get(), false);
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SkColorSpaceTransferFn fn;
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fn.fA = 1.0f;
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fn.fB = 0.0f;
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fn.fC = 0.0f;
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fn.fD = 0.5f;
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fn.fE = 1.0f;
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fn.fF = 0.0f;
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fn.fG = 1.0f;
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test_serialize(r, SkColorSpace::NewRGB(fn, toXYZ).get(), false);
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}
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DEF_TEST(ColorSpace_Equals, r) {
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sk_sp<SkColorSpace> srgb = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
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sk_sp<SkColorSpace> adobe = SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named);
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sk_sp<SkData> data = SkData::MakeFromFileName(
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GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
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sk_sp<SkColorSpace> z30 = SkColorSpace::NewICC(data->data(), data->size());
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data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
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sk_sp<SkColorSpace> z32 = SkColorSpace::NewICC(data->data(), data->size());
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data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
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sk_sp<SkColorSpace> upperLeft = SkColorSpace::NewICC(data->data(), data->size());
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data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
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sk_sp<SkColorSpace> upperRight = SkColorSpace::NewICC(data->data(), data->size());
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const float gammas1[] = { 1.1f, 1.2f, 1.3f, };
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const float gammas2[] = { 1.1f, 1.2f, 1.7f, };
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SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
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sk_sp<SkColorSpace> rgb1 = SkColorSpace::NewRGB(gammas1, toXYZ);
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sk_sp<SkColorSpace> rgb2 = SkColorSpace::NewRGB(gammas2, toXYZ);
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sk_sp<SkColorSpace> rgb3 = SkColorSpace::NewRGB(gammas1, toXYZ);
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SkColorSpaceTransferFn fn;
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fn.fA = 1.0f;
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fn.fB = 0.0f;
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fn.fC = 0.0f;
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fn.fD = 0.5f;
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fn.fE = 1.0f;
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fn.fF = 0.0f;
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fn.fG = 1.0f;
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sk_sp<SkColorSpace> rgb4 = SkColorSpace::NewRGB(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(adobe.get(), adobe.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(upperLeft.get(), upperLeft.get()));
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REPORTER_ASSERT(r, SkColorSpace::Equals(upperRight.get(), upperRight.get()));
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REPORTER_ASSERT(r, SkColorSpace::Equals(rgb1.get(), rgb1.get()));
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REPORTER_ASSERT(r, SkColorSpace::Equals(rgb1.get(), rgb3.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(adobe.get(), srgb.get()));
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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(upperLeft.get(), srgb.get()));
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REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), upperRight.get()));
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REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), upperRight.get()));
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REPORTER_ASSERT(r, !SkColorSpace::Equals(upperRight.get(), adobe.get()));
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REPORTER_ASSERT(r, !SkColorSpace::Equals(rgb1.get(), rgb2.get()));
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REPORTER_ASSERT(r, !SkColorSpace::Equals(rgb1.get(), rgb4.get()));
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}
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DEF_TEST(ColorSpace_Primaries, r) {
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// sRGB primaries
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SkColorSpacePrimaries primaries;
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primaries.fRX = 0.64f;
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primaries.fRY = 0.33f;
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primaries.fGX = 0.30f;
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primaries.fGY = 0.60f;
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primaries.fBX = 0.15f;
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primaries.fBY = 0.06f;
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primaries.fWX = 0.3127f;
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primaries.fWY = 0.3290f;
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SkMatrix44 toXYZ(SkMatrix44::kUninitialized_Constructor);
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bool result = primaries.toXYZD50(&toXYZ);
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REPORTER_ASSERT(r, result);
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sk_sp<SkColorSpace> space = SkColorSpace::NewRGB(SkColorSpace::kSRGB_RenderTargetGamma, toXYZ);
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REPORTER_ASSERT(r, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named) == space);
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}
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