| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #include "platform/image-decoders/ImageDecoder.h" |
| |
| #include "platform/image-decoders/ImageFrame.h" |
| #include "wtf/OwnPtr.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/Vector.h" |
| #include <gtest/gtest.h> |
| |
| using namespace WebCore; |
| |
| class TestImageDecoder : public ImageDecoder { |
| public: |
| TestImageDecoder() |
| : ImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAndColorProfileApplied, noDecodedImageByteLimit) |
| { |
| } |
| |
| virtual String filenameExtension() const OVERRIDE { return ""; } |
| virtual ImageFrame* frameBufferAtIndex(size_t) OVERRIDE { return 0; } |
| |
| Vector<ImageFrame, 1>& frameBufferCache() |
| { |
| return m_frameBufferCache; |
| } |
| |
| void resetRequiredPreviousFrames(bool knownOpaque = false) |
| { |
| for (size_t i = 0; i < m_frameBufferCache.size(); ++i) |
| m_frameBufferCache[i].setRequiredPreviousFrameIndex(findRequiredPreviousFrame(i, knownOpaque)); |
| } |
| |
| void initFrames(size_t numFrames, unsigned width = 100, unsigned height = 100) |
| { |
| setSize(width, height); |
| m_frameBufferCache.resize(numFrames); |
| for (size_t i = 0; i < numFrames; ++i) |
| m_frameBufferCache[i].setOriginalFrameRect(IntRect(0, 0, width, height)); |
| } |
| }; |
| |
| TEST(ImageDecoderTest, sizeCalculationMayOverflow) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| EXPECT_FALSE(decoder->setSize(1 << 29, 1)); |
| EXPECT_FALSE(decoder->setSize(1, 1 << 29)); |
| EXPECT_FALSE(decoder->setSize(1 << 15, 1 << 15)); |
| EXPECT_TRUE(decoder->setSize(1 << 28, 1)); |
| EXPECT_TRUE(decoder->setSize(1, 1 << 28)); |
| EXPECT_TRUE(decoder->setSize(1 << 14, 1 << 14)); |
| } |
| |
| TEST(ImageDecoderTest, requiredPreviousFrameIndex) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(6); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| |
| frameBuffers[1].setDisposalMethod(ImageFrame::DisposeKeep); |
| frameBuffers[2].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
| frameBuffers[3].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
| frameBuffers[4].setDisposalMethod(ImageFrame::DisposeKeep); |
| |
| decoder->resetRequiredPreviousFrames(); |
| |
| // The first frame doesn't require any previous frame. |
| EXPECT_EQ(kNotFound, frameBuffers[0].requiredPreviousFrameIndex()); |
| // The previous DisposeNotSpecified frame is required. |
| EXPECT_EQ(0u, frameBuffers[1].requiredPreviousFrameIndex()); |
| // DisposeKeep is treated as DisposeNotSpecified. |
| EXPECT_EQ(1u, frameBuffers[2].requiredPreviousFrameIndex()); |
| // Previous DisposeOverwritePrevious frames are skipped. |
| EXPECT_EQ(1u, frameBuffers[3].requiredPreviousFrameIndex()); |
| EXPECT_EQ(1u, frameBuffers[4].requiredPreviousFrameIndex()); |
| EXPECT_EQ(4u, frameBuffers[5].requiredPreviousFrameIndex()); |
| } |
| |
| TEST(ImageDecoderTest, requiredPreviousFrameIndexDisposeOverwriteBgcolor) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(3); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| |
| // Fully covering DisposeOverwriteBgcolor previous frame resets the starting state. |
| frameBuffers[1].setDisposalMethod(ImageFrame::DisposeOverwriteBgcolor); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(kNotFound, frameBuffers[2].requiredPreviousFrameIndex()); |
| |
| // Partially covering DisposeOverwriteBgcolor previous frame is required by this frame. |
| frameBuffers[1].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(1u, frameBuffers[2].requiredPreviousFrameIndex()); |
| } |
| |
| TEST(ImageDecoderTest, requiredPreviousFrameIndexForFrame1) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(2); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(0u, frameBuffers[1].requiredPreviousFrameIndex()); |
| |
| // The first frame with DisposeOverwritePrevious or DisposeOverwriteBgcolor |
| // resets the starting state. |
| frameBuffers[0].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(kNotFound, frameBuffers[1].requiredPreviousFrameIndex()); |
| frameBuffers[0].setDisposalMethod(ImageFrame::DisposeOverwriteBgcolor); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(kNotFound, frameBuffers[1].requiredPreviousFrameIndex()); |
| |
| // ... even if it partially covers. |
| frameBuffers[0].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
| |
| frameBuffers[0].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(kNotFound, frameBuffers[1].requiredPreviousFrameIndex()); |
| frameBuffers[0].setDisposalMethod(ImageFrame::DisposeOverwriteBgcolor); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(kNotFound, frameBuffers[1].requiredPreviousFrameIndex()); |
| } |
| |
| TEST(ImageDecoderTest, requiredPreviousFrameIndexBlendAtopBgcolor) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(3); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| |
| frameBuffers[1].setOriginalFrameRect(IntRect(25, 25, 50, 50)); |
| frameBuffers[2].setAlphaBlendSource(ImageFrame::BlendAtopBgcolor); |
| |
| // A full frame with 'blending method == BlendAtopBgcolor' doesn't depend on any prior frames. |
| for (int disposeMethod = ImageFrame::DisposeNotSpecified; disposeMethod <= ImageFrame::DisposeOverwritePrevious; ++disposeMethod) { |
| frameBuffers[1].setDisposalMethod(static_cast<ImageFrame::DisposalMethod>(disposeMethod)); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_EQ(kNotFound, frameBuffers[2].requiredPreviousFrameIndex()); |
| } |
| |
| // A non-full frame with 'blending method == BlendAtopBgcolor' does depend on a prior frame. |
| frameBuffers[2].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
| for (int disposeMethod = ImageFrame::DisposeNotSpecified; disposeMethod <= ImageFrame::DisposeOverwritePrevious; ++disposeMethod) { |
| frameBuffers[1].setDisposalMethod(static_cast<ImageFrame::DisposalMethod>(disposeMethod)); |
| decoder->resetRequiredPreviousFrames(); |
| EXPECT_NE(kNotFound, frameBuffers[2].requiredPreviousFrameIndex()); |
| } |
| } |
| |
| TEST(ImageDecoderTest, requiredPreviousFrameIndexKnownOpaque) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(3); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| |
| frameBuffers[1].setOriginalFrameRect(IntRect(25, 25, 50, 50)); |
| |
| // A full frame that is known to be opaque doesn't depend on any prior frames. |
| for (int disposeMethod = ImageFrame::DisposeNotSpecified; disposeMethod <= ImageFrame::DisposeOverwritePrevious; ++disposeMethod) { |
| frameBuffers[1].setDisposalMethod(static_cast<ImageFrame::DisposalMethod>(disposeMethod)); |
| decoder->resetRequiredPreviousFrames(true); |
| EXPECT_EQ(kNotFound, frameBuffers[2].requiredPreviousFrameIndex()); |
| } |
| |
| // A non-full frame that is known to be opaque does depend on a prior frame. |
| frameBuffers[2].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
| for (int disposeMethod = ImageFrame::DisposeNotSpecified; disposeMethod <= ImageFrame::DisposeOverwritePrevious; ++disposeMethod) { |
| frameBuffers[1].setDisposalMethod(static_cast<ImageFrame::DisposalMethod>(disposeMethod)); |
| decoder->resetRequiredPreviousFrames(true); |
| EXPECT_NE(kNotFound, frameBuffers[2].requiredPreviousFrameIndex()); |
| } |
| } |
| |
| TEST(ImageDecoderTest, clearCacheExceptFrameDoNothing) |
| { |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->clearCacheExceptFrame(0); |
| |
| // This should not crash. |
| decoder->initFrames(20); |
| decoder->clearCacheExceptFrame(kNotFound); |
| } |
| |
| TEST(ImageDecoderTest, clearCacheExceptFrameAll) |
| { |
| const size_t numFrames = 10; |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(numFrames); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| for (size_t i = 0; i < numFrames; ++i) |
| frameBuffers[i].setStatus(i % 2 ? ImageFrame::FramePartial : ImageFrame::FrameComplete); |
| |
| decoder->clearCacheExceptFrame(kNotFound); |
| |
| for (size_t i = 0; i < numFrames; ++i) { |
| SCOPED_TRACE(testing::Message() << i); |
| EXPECT_EQ(ImageFrame::FrameEmpty, frameBuffers[i].status()); |
| } |
| } |
| |
| TEST(ImageDecoderTest, clearCacheExceptFramePreverveClearExceptFrame) |
| { |
| const size_t numFrames = 10; |
| OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| decoder->initFrames(numFrames); |
| Vector<ImageFrame, 1>& frameBuffers = decoder->frameBufferCache(); |
| for (size_t i = 0; i < numFrames; ++i) |
| frameBuffers[i].setStatus(ImageFrame::FrameComplete); |
| |
| decoder->resetRequiredPreviousFrames(); |
| decoder->clearCacheExceptFrame(5); |
| for (size_t i = 0; i < numFrames; ++i) { |
| SCOPED_TRACE(testing::Message() << i); |
| if (i == 5) |
| EXPECT_EQ(ImageFrame::FrameComplete, frameBuffers[i].status()); |
| else |
| EXPECT_EQ(ImageFrame::FrameEmpty, frameBuffers[i].status()); |
| } |
| } |