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| 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * |
| 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are |
| 6 * met: |
| 7 * |
| 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above |
| 11 * copyright notice, this list of conditions and the following disclaimer |
| 12 * in the documentation and/or other materials provided with the |
| 13 * distribution. |
| 14 * * Neither the name of Google Inc. nor the names of its |
| 15 * contributors may be used to endorse or promote products derived from |
| 16 * this software without specific prior written permission. |
| 17 * |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ |
| 30 |
| 31 #include "config.h" |
| 32 |
| 33 #include "core/platform/image-decoders/ImageDecoder.h" |
| 34 |
| 35 #include "wtf/OwnPtr.h" |
| 36 #include "wtf/PassOwnPtr.h" |
| 37 #include "wtf/Vector.h" |
| 38 #include <gtest/gtest.h> |
| 39 |
| 40 using namespace WebCore; |
| 41 |
| 42 class TestImageDecoder : public ImageDecoder { |
| 43 public: |
| 44 TestImageDecoder() |
| 45 : ImageDecoder(ImageSource::AlphaNotPremultiplied, ImageSource::GammaAnd
ColorProfileApplied) |
| 46 { |
| 47 } |
| 48 |
| 49 virtual String filenameExtension() const OVERRIDE { return ""; } |
| 50 virtual ImageFrame* frameBufferAtIndex(size_t) OVERRIDE { return 0; } |
| 51 |
| 52 size_t findRequiredPreviousFrame(size_t frameIndex) |
| 53 { |
| 54 return ImageDecoder::findRequiredPreviousFrame(frameIndex); |
| 55 } |
| 56 |
| 57 Vector<ImageFrame, 1>& frameBufferCache() |
| 58 { |
| 59 return m_frameBufferCache; |
| 60 } |
| 61 |
| 62 void resetRequiredPreviousFrames() |
| 63 { |
| 64 for (size_t i = 0; i < m_frameBufferCache.size(); ++i) |
| 65 m_frameBufferCache[i].setRequiredPreviousFrameIndex(findRequiredPrev
iousFrame(i)); |
| 66 } |
| 67 |
| 68 void initFrames(size_t numFrames, unsigned width = 100, unsigned height = 10
0) |
| 69 { |
| 70 setSize(width, height); |
| 71 m_frameBufferCache.resize(numFrames); |
| 72 for (size_t i = 0; i < numFrames; ++i) |
| 73 m_frameBufferCache[i].setOriginalFrameRect(IntRect(0, 0, width, heig
ht)); |
| 74 } |
| 75 }; |
| 76 |
| 77 TEST(ImageDecoderTest, findRequiredPreviousFrame) |
| 78 { |
| 79 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 80 decoder->initFrames(6); |
| 81 Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache()
; |
| 82 |
| 83 decoderFrameBufferCache[1].setDisposalMethod(ImageFrame::DisposeKeep); |
| 84 decoderFrameBufferCache[2].setDisposalMethod(ImageFrame::DisposeOverwritePre
vious); |
| 85 decoderFrameBufferCache[3].setDisposalMethod(ImageFrame::DisposeOverwritePre
vious); |
| 86 decoderFrameBufferCache[4].setDisposalMethod(ImageFrame::DisposeKeep); |
| 87 |
| 88 // The first frame doesn't require any previous frame. |
| 89 EXPECT_EQ(notFound, decoder->findRequiredPreviousFrame(0)); |
| 90 // The previous DisposeNotSpecified frame is required. |
| 91 EXPECT_EQ(0u, decoder->findRequiredPreviousFrame(1)); |
| 92 // DisposeKeep is treated as DisposeNotSpecified. |
| 93 EXPECT_EQ(1u, decoder->findRequiredPreviousFrame(2)); |
| 94 // Previous DisposeOverwritePrevious frames are skipped. |
| 95 EXPECT_EQ(1u, decoder->findRequiredPreviousFrame(3)); |
| 96 EXPECT_EQ(1u, decoder->findRequiredPreviousFrame(4)); |
| 97 EXPECT_EQ(4u, decoder->findRequiredPreviousFrame(5)); |
| 98 } |
| 99 |
| 100 TEST(ImageDecoderTest, findRequiredPreviousFrameDisposeOverwriteBgcolor) |
| 101 { |
| 102 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 103 decoder->initFrames(3); |
| 104 Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache()
; |
| 105 |
| 106 // Fully covering DisposeOverwriteBgcolor previous frame resets the starting
state. |
| 107 decoderFrameBufferCache[1].setDisposalMethod(ImageFrame::DisposeOverwriteBgc
olor); |
| 108 EXPECT_EQ(notFound, decoder->findRequiredPreviousFrame(2)); |
| 109 |
| 110 // Partially covering DisposeOverwriteBgcolor previous frame is required by
this frame. |
| 111 decoderFrameBufferCache[1].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
| 112 EXPECT_EQ(1u, decoder->findRequiredPreviousFrame(2)); |
| 113 } |
| 114 |
| 115 TEST(ImageDecoderTest, findRequiredPreviousFrameForFrame1) |
| 116 { |
| 117 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 118 decoder->initFrames(2); |
| 119 Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache()
; |
| 120 |
| 121 // DisposeOverwritePrevious of the first frame is treated as DisposeOverwrit
eBgcolor. |
| 122 decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwritePre
vious); |
| 123 EXPECT_EQ(notFound, decoder->findRequiredPreviousFrame(1)); |
| 124 decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwriteBgc
olor); |
| 125 EXPECT_EQ(notFound, decoder->findRequiredPreviousFrame(1)); |
| 126 |
| 127 // The first frame resets starting state even if it partially covers. |
| 128 decoderFrameBufferCache[0].setOriginalFrameRect(IntRect(50, 50, 50, 50)); |
| 129 |
| 130 decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwritePre
vious); |
| 131 EXPECT_EQ(notFound, decoder->findRequiredPreviousFrame(1)); |
| 132 decoderFrameBufferCache[0].setDisposalMethod(ImageFrame::DisposeOverwriteBgc
olor); |
| 133 EXPECT_EQ(notFound, decoder->findRequiredPreviousFrame(1)); |
| 134 } |
| 135 |
| 136 TEST(ImageDecoderTest, clearFrameBufferCacheDoNothing) |
| 137 { |
| 138 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 139 decoder->clearFrameBufferCache(0); |
| 140 |
| 141 // This should not crash. |
| 142 decoder->initFrames(20); |
| 143 decoder->clearFrameBufferCache(notFound); |
| 144 } |
| 145 |
| 146 TEST(ImageDecoderTest, clearFrameBufferCacheAll) |
| 147 { |
| 148 const size_t numFrames = 10; |
| 149 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 150 decoder->initFrames(numFrames); |
| 151 Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache()
; |
| 152 for (size_t i = 0; i < numFrames; ++i) |
| 153 decoderFrameBufferCache[i].setStatus(i % 2 ? ImageFrame::FramePartial :
ImageFrame::FrameComplete); |
| 154 |
| 155 decoder->clearFrameBufferCache(notFound); |
| 156 |
| 157 for (size_t i = 0; i < numFrames; ++i) { |
| 158 SCOPED_TRACE(testing::Message() << i); |
| 159 EXPECT_EQ(ImageFrame::FrameEmpty, decoderFrameBufferCache[i].status()); |
| 160 } |
| 161 } |
| 162 |
| 163 TEST(ImageDecoderTest, clearFrameBufferCachePreverveClearExceptFrame) |
| 164 { |
| 165 const size_t numFrames = 10; |
| 166 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 167 decoder->initFrames(numFrames); |
| 168 Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache()
; |
| 169 for (size_t i = 0; i < numFrames; ++i) |
| 170 decoderFrameBufferCache[i].setStatus(ImageFrame::FrameComplete); |
| 171 |
| 172 decoder->resetRequiredPreviousFrames(); |
| 173 decoder->clearFrameBufferCache(5); |
| 174 for (size_t i = 0; i < numFrames; ++i) { |
| 175 SCOPED_TRACE(testing::Message() << i); |
| 176 if (i == 5) |
| 177 EXPECT_EQ(ImageFrame::FrameComplete, decoderFrameBufferCache[i].stat
us()); |
| 178 else |
| 179 EXPECT_EQ(ImageFrame::FrameEmpty, decoderFrameBufferCache[i].status(
)); |
| 180 } |
| 181 } |
| 182 |
| 183 TEST(ImageDecoderTest, clearFrameBufferCachePreverveRequiredFrame) |
| 184 { |
| 185 const size_t numFrames = 10; |
| 186 OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder())); |
| 187 decoder->initFrames(numFrames); |
| 188 Vector<ImageFrame, 1>& decoderFrameBufferCache = decoder->frameBufferCache()
; |
| 189 for (size_t i = 0; i < numFrames; ++i) |
| 190 decoderFrameBufferCache[i].setStatus(ImageFrame::FrameComplete); |
| 191 |
| 192 decoderFrameBufferCache[2].setStatus(ImageFrame::FrameComplete); |
| 193 decoderFrameBufferCache[3].clearPixelData(); |
| 194 decoderFrameBufferCache[4].setDisposalMethod(ImageFrame::DisposeOverwritePre
vious); |
| 195 decoderFrameBufferCache[5].setDisposalMethod(ImageFrame::DisposeOverwritePre
vious); |
| 196 decoderFrameBufferCache[6].clearPixelData(); |
| 197 decoder->resetRequiredPreviousFrames(); |
| 198 |
| 199 // 6 which is empty requires 3 which is empty, and 3 requires 2 which is com
plete, |
| 200 // so 2 will be required by the next request of 6 and needs to be preserved. |
| 201 decoder->clearFrameBufferCache(6); |
| 202 for (size_t i = 0; i < numFrames; ++i) { |
| 203 SCOPED_TRACE(testing::Message() << i); |
| 204 if (i == 2) |
| 205 EXPECT_EQ(ImageFrame::FrameComplete, decoderFrameBufferCache[i].stat
us()); |
| 206 else |
| 207 EXPECT_EQ(ImageFrame::FrameEmpty, decoderFrameBufferCache[i].status(
)); |
| 208 } |
| 209 } |
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