Index: Source/core/platform/image-decoders/ImageDecoderTest.cpp |
diff --git a/Source/core/platform/image-decoders/ImageDecoderTest.cpp b/Source/core/platform/image-decoders/ImageDecoderTest.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b8f23931c9792af419e967c4128782b4dae7ac33 |
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+++ b/Source/core/platform/image-decoders/ImageDecoderTest.cpp |
@@ -0,0 +1,216 @@ |
+/* |
+ * 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 "core/platform/image-decoders/ImageDecoder.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) |
+ { |
+ } |
+ |
+ virtual String filenameExtension() const OVERRIDE { return ""; } |
+ virtual ImageFrame* frameBufferAtIndex(size_t) OVERRIDE { return 0; } |
+ |
+ Vector<ImageFrame, 1>& frameBufferCache() |
+ { |
+ return m_frameBufferCache; |
+ } |
+ |
+ void resetRequiredPreviousFrames() |
+ { |
+ for (size_t i = 0; i < m_frameBufferCache.size(); ++i) |
+ m_frameBufferCache[i].setRequiredPreviousFrameIndex(findRequiredPreviousFrame(i)); |
+ } |
+ |
+ 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, requiredPreviousFrameIndex) |
+{ |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->initFrames(6); |
+ Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache(); |
+ |
+ decoderFrameBufferCache[1].setDisposalMethod(ImageFrame::DisposeKeep); |
+ decoderFrameBufferCache[2].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
+ decoderFrameBufferCache[3].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
+ decoderFrameBufferCache[4].setDisposalMethod(ImageFrame::DisposeKeep); |
+ |
+ decoder->resetRequiredPreviousFrames(); |
+ |
+ // The first frame doesn't require any previous frame. |
+ EXPECT_EQ(notFound, decoderFrameBufferCache[0].requiredPreviousFrameIndex()); |
+ // The previous DisposeNotSpecified frame is required. |
+ EXPECT_EQ(0u, decoderFrameBufferCache[1].requiredPreviousFrameIndex()); |
+ // DisposeKeep is treated as DisposeNotSpecified. |
+ EXPECT_EQ(1u, decoderFrameBufferCache[2].requiredPreviousFrameIndex()); |
+ // Previous DisposeOverwritePrevious frames are skipped. |
+ EXPECT_EQ(1u, decoderFrameBufferCache[3].requiredPreviousFrameIndex()); |
+ EXPECT_EQ(1u, decoderFrameBufferCache[4].requiredPreviousFrameIndex()); |
+ EXPECT_EQ(4u, decoderFrameBufferCache[5].requiredPreviousFrameIndex()); |
+} |
+ |
+TEST(ImageDecoderTest, requiredPreviousFrameIndexDisposeOverwriteBgcolor) |
+{ |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->initFrames(3); |
+ Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache(); |
+ |
+ // Fully covering DisposeOverwriteBgcolor previous frame resets the starting state. |
+ decoderFrameBufferCache[1].setDisposalMethod(ImageFrame::DisposeOverwriteBgcolor); |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(notFound, decoderFrameBufferCache[2].requiredPreviousFrameIndex()); |
+ |
+ // Partially covering DisposeOverwriteBgcolor previous frame is required by this frame. |
+ decoderFrameBufferCache[1].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(1u, decoderFrameBufferCache[2].requiredPreviousFrameIndex()); |
+} |
+ |
+TEST(ImageDecoderTest, requiredPreviousFrameIndexForFrame1) |
+{ |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->initFrames(2); |
+ Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache(); |
+ |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(0u, decoderFrameBufferCache[1].requiredPreviousFrameIndex()); |
+ |
+ // The first frame with DisposeOverwritePrevious or DisposeOverwriteBgcolor |
+ // resets the starting state. |
+ decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(notFound, decoderFrameBufferCache[1].requiredPreviousFrameIndex()); |
+ decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwriteBgcolor); |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(notFound, decoderFrameBufferCache[1].requiredPreviousFrameIndex()); |
+ |
+ // ... even if it partially covers. |
+ decoderFrameBufferCache[0].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
+ |
+ decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(notFound, decoderFrameBufferCache[1].requiredPreviousFrameIndex()); |
+ decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwriteBgcolor); |
+ decoder->resetRequiredPreviousFrames(); |
+ EXPECT_EQ(notFound, decoderFrameBufferCache[1].requiredPreviousFrameIndex()); |
+} |
+ |
+TEST(ImageDecoderTest, clearCacheExceptFrameDoNothing) |
+{ |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->clearCacheExceptFrame(0); |
+ |
+ // This should not crash. |
+ decoder->initFrames(20); |
+ decoder->clearCacheExceptFrame(notFound); |
+} |
+ |
+TEST(ImageDecoderTest, clearCacheExceptFrameAll) |
+{ |
+ const size_t numFrames = 10; |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->initFrames(numFrames); |
+ Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache(); |
+ for (size_t i = 0; i < numFrames; ++i) |
+ decoderFrameBufferCache[i].setStatus(i % 2 ? ImageFrame::FramePartial : ImageFrame::FrameComplete); |
+ |
+ decoder->clearCacheExceptFrame(notFound); |
+ |
+ for (size_t i = 0; i < numFrames; ++i) { |
+ SCOPED_TRACE(testing::Message() << i); |
+ EXPECT_EQ(ImageFrame::FrameEmpty, decoderFrameBufferCache[i].status()); |
+ } |
+} |
+ |
+TEST(ImageDecoderTest, clearCacheExceptFramePreverveClearExceptFrame) |
+{ |
+ const size_t numFrames = 10; |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->initFrames(numFrames); |
+ Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache(); |
+ for (size_t i = 0; i < numFrames; ++i) |
+ decoderFrameBufferCache[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, decoderFrameBufferCache[i].status()); |
+ else |
+ EXPECT_EQ(ImageFrame::FrameEmpty, decoderFrameBufferCache[i].status()); |
+ } |
+} |
+ |
+TEST(ImageDecoderTest, clearCacheExceptFramePreverveRequiredFrame) |
+{ |
+ const size_t numFrames = 10; |
+ OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
+ decoder->initFrames(numFrames); |
+ Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache(); |
+ for (size_t i = 0; i < numFrames; ++i) |
+ decoderFrameBufferCache[i].setStatus(ImageFrame::FrameComplete); |
+ |
+ decoderFrameBufferCache[2].setStatus(ImageFrame::FrameComplete); |
+ decoderFrameBufferCache[3].clearPixelData(); |
+ decoderFrameBufferCache[4].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
+ decoderFrameBufferCache[5].setDisposalMethod(ImageFrame::DisposeOverwritePrevious); |
+ decoderFrameBufferCache[6].clearPixelData(); |
+ decoder->resetRequiredPreviousFrames(); |
+ |
+ // 6 which is empty requires 3 which is empty, and 3 requires 2 which is complete, |
+ // so 2 will be required by the next request of 6 and needs to be preserved. |
+ decoder->clearCacheExceptFrame(6); |
+ for (size_t i = 0; i < numFrames; ++i) { |
+ SCOPED_TRACE(testing::Message() << i); |
+ if (i == 2) |
+ EXPECT_EQ(ImageFrame::FrameComplete, decoderFrameBufferCache[i].status()); |
+ else |
+ EXPECT_EQ(ImageFrame::FrameEmpty, decoderFrameBufferCache[i].status()); |
+ } |
+} |