| /* |
| * 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_Base.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 float expectedGammas[]) { |
| |
| const sk_sp<SkGammas>& gammas = as_CSB(space)->gammas(); |
| REPORTER_ASSERT(r, almost_equal(expectedGammas[0], gammas->fRed.fValue)); |
| REPORTER_ASSERT(r, almost_equal(expectedGammas[1], gammas->fGreen.fValue)); |
| REPORTER_ASSERT(r, almost_equal(expectedGammas[2], gammas->fBlue.fValue)); |
| |
| |
| SkMatrix44 mat = space->xyz(); |
| const float src[] = { |
| 1, 0, 0, 1, |
| 0, 1, 0, 1, |
| 0, 0, 1, 1, |
| }; |
| float dst[4]; |
| for (int i = 0; i < 3; ++i) { |
| mat.mapScalars(&src[i*4], dst); |
| REPORTER_ASSERT(r, almost_equal(red[i], dst[0])); |
| REPORTER_ASSERT(r, almost_equal(green[i], dst[1])); |
| REPORTER_ASSERT(r, almost_equal(blue[i], dst[2])); |
| } |
| } |
| |
| const float g_sRGB_XYZ[] = { 0.4358f, 0.2224f, 0.0139f, // R |
| 0.3853f, 0.7170f, 0.0971f, // G |
| 0.1430f, 0.0606f, 0.7139f }; // B |
| |
| const float g_sRGB_gamma[] = { 2.2f, 2.2f, 2.2f }; |
| |
| DEF_TEST(ColorSpace_sRGB, r) { |
| test_space(r, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named).get(), |
| g_sRGB_XYZ, &g_sRGB_XYZ[3], &g_sRGB_XYZ[6], g_sRGB_gamma); |
| |
| } |
| |
| static SkStreamAsset* resource(const char path[]) { |
| SkString fullPath = GetResourcePath(path); |
| return SkStream::NewFromFile(fullPath.c_str()); |
| } |
| |
| DEF_TEST(ColorSpaceParsePngICCProfile, r) { |
| SkAutoTDelete<SkStream> stream(resource("color_wheel_with_profile.png")); |
| REPORTER_ASSERT(r, nullptr != stream); |
| if (!stream) { |
| return; |
| } |
| |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release())); |
| if (!codec) { |
| ERRORF(r, "Failed to create codec from a PNG. Is PNG support missing (or too old)?"); |
| return; |
| } |
| |
| #if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6) |
| SkColorSpace* colorSpace = codec->getColorSpace(); |
| REPORTER_ASSERT(r, nullptr != colorSpace); |
| |
| test_space(r, colorSpace, &g_sRGB_XYZ[0], &g_sRGB_XYZ[3], &g_sRGB_XYZ[6], g_sRGB_gamma); |
| #endif |
| } |
| |
| DEF_TEST(ColorSpaceParseJpegICCProfile, r) { |
| SkAutoTDelete<SkStream> stream(resource("icc-v2-gbr.jpg")); |
| REPORTER_ASSERT(r, nullptr != stream); |
| if (!stream) { |
| return; |
| } |
| |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release())); |
| REPORTER_ASSERT(r, nullptr != codec); |
| if (!codec) { |
| return; |
| } |
| |
| SkColorSpace* colorSpace = codec->getColorSpace(); |
| REPORTER_ASSERT(r, nullptr != colorSpace); |
| |
| 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_space(r, colorSpace, red, green, blue, g_sRGB_gamma); |
| } |
| |
| DEF_TEST(ColorSpaceSRGBCompare, r) { |
| // Create an sRGB color space by name |
| sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named); |
| |
| // Create an sRGB color space by value |
| SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor); |
| srgbToxyzD50.set3x3ColMajorf(g_sRGB_XYZ); |
| sk_sp<SkColorSpace> rgbColorSpace = SkColorSpace::NewRGB(g_sRGB_gamma, srgbToxyzD50); |
| REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace); |
| |
| // Change a single value from the sRGB matrix |
| srgbToxyzD50.set(2, 2, 0.5f); |
| sk_sp<SkColorSpace> strangeColorSpace = SkColorSpace::NewRGB(g_sRGB_gamma, srgbToxyzD50); |
| REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace); |
| } |
| |
| DEF_TEST(ColorSpaceWriteICC, r) { |
| // Test writing a new ICC profile |
| sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named); |
| sk_sp<SkData> namedData = as_CSB(namedColorSpace)->writeToICC(); |
| sk_sp<SkColorSpace> iccColorSpace = SkColorSpace::NewICC(namedData->data(), namedData->size()); |
| test_space(r, iccColorSpace.get(), g_sRGB_XYZ, &g_sRGB_XYZ[3], &g_sRGB_XYZ[6], g_sRGB_gamma); |
| REPORTER_ASSERT(r, iccColorSpace == namedColorSpace); |
| |
| // Test saving the original ICC data |
| sk_sp<SkData> monitorData = SkData::MakeFromFileName( |
| GetResourcePath("monitor_profiles/HP_ZR30w.icc").c_str()); |
| REPORTER_ASSERT(r, monitorData); |
| if (!monitorData) { |
| return; |
| } |
| sk_sp<SkColorSpace> monitorSpace = SkColorSpace::NewICC(monitorData->data(), |
| monitorData->size()); |
| sk_sp<SkData> newMonitorData = as_CSB(monitorSpace)->writeToICC(); |
| sk_sp<SkColorSpace> newMonitorSpace = SkColorSpace::NewICC(newMonitorData->data(), |
| newMonitorData->size()); |
| REPORTER_ASSERT(r, monitorSpace->xyz() == newMonitorSpace->xyz()); |
| REPORTER_ASSERT(r, as_CSB(monitorSpace)->gammas() == as_CSB(newMonitorSpace)->gammas()); |
| } |
| |
| DEF_TEST(ColorSpace_Named, r) { |
| const struct { |
| SkColorSpace::Named fNamed; |
| bool fExpectedToSucceed; |
| } recs[] { |
| { SkColorSpace::kUnknown_Named, false }, |
| { SkColorSpace::kSRGB_Named, true }, |
| { SkColorSpace::kAdobeRGB_Named, true }, |
| }; |
| |
| for (auto rec : recs) { |
| auto cs = SkColorSpace::NewNamed(rec.fNamed); |
| REPORTER_ASSERT(r, !cs == !rec.fExpectedToSucceed); |
| if (cs) { |
| REPORTER_ASSERT(r, SkColorSpace::k2Dot2Curve_GammaNamed == cs->gammaNamed()); |
| } |
| } |
| |
| SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType); |
| REPORTER_ASSERT(r, kSRGB_SkColorProfileType == info.profileType()); |
| REPORTER_ASSERT(r, SkColorSpace::k2Dot2Curve_GammaNamed == info.colorSpace()->gammaNamed()); |
| } |