| /* |
| * 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 "Test.h" |
| |
| #include "png.h" |
| |
| static SkStreamAsset* resource(const char path[]) { |
| SkString fullPath = GetResourcePath(path); |
| return SkStream::NewFromFile(fullPath.c_str()); |
| } |
| |
| #if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6) |
| static bool almost_equal(float a, float b) { |
| return SkTAbs(a - b) < 0.0001f; |
| } |
| #endif |
| |
| DEF_TEST(ColorSpaceParseICCProfile, r) { |
| SkAutoTDelete<SkStream> stream(resource("color_wheel_with_profile.png")); |
| REPORTER_ASSERT(r, nullptr != stream); |
| |
| SkAutoTDelete<SkCodec> codec(SkCodec::NewFromStream(stream.release())); |
| REPORTER_ASSERT(r, nullptr != codec); |
| |
| #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); |
| |
| // No need to use almost equal here. The color profile that we have extracted |
| // actually has a table of gammas. And our current implementation guesses 2.2f. |
| SkFloat3 gammas = colorSpace->gamma(); |
| REPORTER_ASSERT(r, 2.2f == gammas.fVec[0]); |
| REPORTER_ASSERT(r, 2.2f == gammas.fVec[1]); |
| REPORTER_ASSERT(r, 2.2f == gammas.fVec[2]); |
| |
| // These nine values were extracted from the color profile in isolation (before |
| // we embedded it in the png). Here we check that we still extract the same values. |
| SkFloat3x3 xyz = colorSpace->xyz(); |
| REPORTER_ASSERT(r, almost_equal(0.436066f, xyz.fMat[0])); |
| REPORTER_ASSERT(r, almost_equal(0.222488f, xyz.fMat[1])); |
| REPORTER_ASSERT(r, almost_equal(0.013916f, xyz.fMat[2])); |
| REPORTER_ASSERT(r, almost_equal(0.385147f, xyz.fMat[3])); |
| REPORTER_ASSERT(r, almost_equal(0.716873f, xyz.fMat[4])); |
| REPORTER_ASSERT(r, almost_equal(0.0970764f, xyz.fMat[5])); |
| REPORTER_ASSERT(r, almost_equal(0.143066f, xyz.fMat[6])); |
| REPORTER_ASSERT(r, almost_equal(0.0606079f, xyz.fMat[7])); |
| REPORTER_ASSERT(r, almost_equal(0.714096f, xyz.fMat[8])); |
| #endif |
| } |