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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /image/test/gtest/TestDownscalingFilter.cpp | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'image/test/gtest/TestDownscalingFilter.cpp')
-rw-r--r-- | image/test/gtest/TestDownscalingFilter.cpp | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/image/test/gtest/TestDownscalingFilter.cpp b/image/test/gtest/TestDownscalingFilter.cpp new file mode 100644 index 000000000..596becab0 --- /dev/null +++ b/image/test/gtest/TestDownscalingFilter.cpp @@ -0,0 +1,231 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "gtest/gtest.h" + +#include "mozilla/gfx/2D.h" +#include "Common.h" +#include "Decoder.h" +#include "DecoderFactory.h" +#include "SourceBuffer.h" +#include "SurfaceFilters.h" +#include "SurfacePipe.h" + +using namespace mozilla; +using namespace mozilla::gfx; +using namespace mozilla::image; + +template <typename Func> void +WithDownscalingFilter(const IntSize& aInputSize, + const IntSize& aOutputSize, + Func aFunc) +{ + RefPtr<Decoder> decoder = CreateTrivialDecoder(); + ASSERT_TRUE(decoder != nullptr); + + WithFilterPipeline(decoder, Forward<Func>(aFunc), + DownscalingConfig { aInputSize, + SurfaceFormat::B8G8R8A8 }, + SurfaceConfig { decoder, 0, aOutputSize, + SurfaceFormat::B8G8R8A8, false }); +} + +void +AssertConfiguringDownscalingFilterFails(const IntSize& aInputSize, + const IntSize& aOutputSize) +{ + RefPtr<Decoder> decoder = CreateTrivialDecoder(); + ASSERT_TRUE(decoder != nullptr); + + AssertConfiguringPipelineFails(decoder, + DownscalingConfig { aInputSize, + SurfaceFormat::B8G8R8A8 }, + SurfaceConfig { decoder, 0, aOutputSize, + SurfaceFormat::B8G8R8A8, false }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to99_99) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(99, 99), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 99, 99))); + }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to33_33) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(33, 33), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 33, 33))); + }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to1_1) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(1, 1), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 1, 1))); + }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to33_99) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(33, 99), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 33, 99))); + }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to99_33) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(99, 33), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 99, 33))); + }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to99_1) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(99, 1), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 99, 1))); + }); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to1_99) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(1, 99), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + CheckWritePixels(aDecoder, aFilter, + /* aOutputRect = */ Some(IntRect(0, 0, 1, 99))); + }); +} + +TEST(ImageDownscalingFilter, DownscalingFailsFor100_100to101_101) +{ + // Upscaling is disallowed. + AssertConfiguringDownscalingFilterFails(IntSize(100, 100), IntSize(101, 101)); +} + +TEST(ImageDownscalingFilter, DownscalingFailsFor100_100to100_100) +{ + // "Scaling" to the same size is disallowed. + AssertConfiguringDownscalingFilterFails(IntSize(100, 100), IntSize(100, 100)); +} + +TEST(ImageDownscalingFilter, DownscalingFailsFor0_0toMinus1_Minus1) +{ + // A 0x0 input size is disallowed. + AssertConfiguringDownscalingFilterFails(IntSize(0, 0), IntSize(-1, -1)); +} + +TEST(ImageDownscalingFilter, DownscalingFailsForMinus1_Minus1toMinus2_Minus2) +{ + // A negative input size is disallowed. + AssertConfiguringDownscalingFilterFails(IntSize(-1, -1), IntSize(-2, -2)); +} + +TEST(ImageDownscalingFilter, DownscalingFailsFor100_100to0_0) +{ + // A 0x0 output size is disallowed. + AssertConfiguringDownscalingFilterFails(IntSize(100, 100), IntSize(0, 0)); +} + +TEST(ImageDownscalingFilter, DownscalingFailsFor100_100toMinus1_Minus1) +{ + // A negative output size is disallowed. + AssertConfiguringDownscalingFilterFails(IntSize(100, 100), IntSize(-1, -1)); +} + +TEST(ImageDownscalingFilter, WritePixelsOutput100_100to20_20) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(20, 20), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + // Fill the image. It consists of 25 lines of green, followed by 25 lines of + // red, followed by 25 lines of green, followed by 25 more lines of red. + uint32_t count = 0; + auto result = aFilter->WritePixels<uint32_t>([&]() -> NextPixel<uint32_t> { + uint32_t color = (count <= 25 * 100) || (count > 50 * 100 && count <= 75 * 100) + ? BGRAColor::Green().AsPixel() + : BGRAColor::Red().AsPixel(); + ++count; + return AsVariant(color); + }); + EXPECT_EQ(WriteState::FINISHED, result); + EXPECT_EQ(100u * 100u, count); + + AssertCorrectPipelineFinalState(aFilter, + IntRect(0, 0, 100, 100), + IntRect(0, 0, 20, 20)); + + // Check that the generated image is correct. Note that we skip rows near + // the transitions between colors, since the downscaler does not produce a + // sharp boundary at these points. Even some of the rows we test need a + // small amount of fuzz; this is just the nature of Lanczos downscaling. + RawAccessFrameRef currentFrame = aDecoder->GetCurrentFrameRef(); + RefPtr<SourceSurface> surface = currentFrame->GetSourceSurface(); + EXPECT_TRUE(RowsAreSolidColor(surface, 0, 4, BGRAColor::Green(), /* aFuzz = */ 2)); + EXPECT_TRUE(RowsAreSolidColor(surface, 6, 3, BGRAColor::Red(), /* aFuzz = */ 3)); + EXPECT_TRUE(RowsAreSolidColor(surface, 11, 3, BGRAColor::Green(), /* aFuzz = */ 3)); + EXPECT_TRUE(RowsAreSolidColor(surface, 16, 4, BGRAColor::Red(), /* aFuzz = */ 3)); + }); +} + +TEST(ImageDownscalingFilter, WritePixelsOutput100_100to10_20) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(10, 20), + [](Decoder* aDecoder, SurfaceFilter* aFilter) { + // Fill the image. It consists of 25 lines of green, followed by 25 lines of + // red, followed by 25 lines of green, followed by 25 more lines of red. + uint32_t count = 0; + auto result = aFilter->WritePixels<uint32_t>([&]() -> NextPixel<uint32_t> { + uint32_t color = (count <= 25 * 100) || (count > 50 * 100 && count <= 75 * 100) + ? BGRAColor::Green().AsPixel() + : BGRAColor::Red().AsPixel(); + ++count; + return AsVariant(color); + }); + EXPECT_EQ(WriteState::FINISHED, result); + EXPECT_EQ(100u * 100u, count); + + AssertCorrectPipelineFinalState(aFilter, + IntRect(0, 0, 100, 100), + IntRect(0, 0, 10, 20)); + + // Check that the generated image is correct. Note that we skip rows near + // the transitions between colors, since the downscaler does not produce a + // sharp boundary at these points. Even some of the rows we test need a + // small amount of fuzz; this is just the nature of Lanczos downscaling. + RawAccessFrameRef currentFrame = aDecoder->GetCurrentFrameRef(); + RefPtr<SourceSurface> surface = currentFrame->GetSourceSurface(); + EXPECT_TRUE(RowsAreSolidColor(surface, 0, 4, BGRAColor::Green(), /* aFuzz = */ 2)); + EXPECT_TRUE(RowsAreSolidColor(surface, 6, 3, BGRAColor::Red(), /* aFuzz = */ 3)); + EXPECT_TRUE(RowsAreSolidColor(surface, 11, 3, BGRAColor::Green(), /* aFuzz = */ 3)); + EXPECT_TRUE(RowsAreSolidColor(surface, 16, 4, BGRAColor::Red(), /* aFuzz = */ 3)); + }); +} + +TEST(ImageDownscalingFilter, ConfiguringPalettedDownscaleFails) +{ + RefPtr<Decoder> decoder = CreateTrivialDecoder(); + ASSERT_TRUE(decoder != nullptr); + + // DownscalingFilter does not support paletted images, so configuration should + // fail. + AssertConfiguringPipelineFails(decoder, + DownscalingConfig { IntSize(100, 100), + SurfaceFormat::B8G8R8A8 }, + PalettedSurfaceConfig { decoder, 0, IntSize(20, 20), + IntRect(0, 0, 20, 20), + SurfaceFormat::B8G8R8A8, 8, + false }); +} |