From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- image/test/gtest/TestDownscalingFilter.cpp | 231 +++++++++++++++++++++++++++++ 1 file changed, 231 insertions(+) create mode 100644 image/test/gtest/TestDownscalingFilter.cpp (limited to 'image/test/gtest/TestDownscalingFilter.cpp') diff --git a/image/test/gtest/TestDownscalingFilter.cpp b/image/test/gtest/TestDownscalingFilter.cpp new file mode 100644 index 0000000000..d00f67d188 --- /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 +void WithDownscalingFilter(const IntSize& aInputSize, + const IntSize& aOutputSize, Func aFunc) { + RefPtr decoder = CreateTrivialDecoder(); + ASSERT_TRUE(decoder != nullptr); + + WithFilterPipeline( + decoder, std::forward(aFunc), + DownscalingConfig{aInputSize, SurfaceFormat::OS_RGBA}, + SurfaceConfig{decoder, aOutputSize, SurfaceFormat::OS_RGBA, false}); +} + +void AssertConfiguringDownscalingFilterFails(const IntSize& aInputSize, + const IntSize& aOutputSize) { + RefPtr decoder = CreateTrivialDecoder(); + ASSERT_TRUE(decoder != nullptr); + + AssertConfiguringPipelineFails( + decoder, DownscalingConfig{aInputSize, SurfaceFormat::OS_RGBA}, + SurfaceConfig{decoder, aOutputSize, SurfaceFormat::OS_RGBA, false}); +} + +TEST(ImageDownscalingFilter, WritePixels100_100to99_99) +{ + WithDownscalingFilter(IntSize(100, 100), IntSize(99, 99), + [](image::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), + [](image::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), + [](image::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), + [](image::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), + [](image::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), + [](image::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), + [](image::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), + [](image::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([&]() -> NextPixel { + 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 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), + [](image::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([&]() -> NextPixel { + 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 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)); + }); +} -- cgit v1.2.3