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 *
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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.
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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
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "platform/graphics/BitmapImage.h"
33
34 #include "platform/SharedBuffer.h"
35 #include "platform/graphics/DeferredImageDecoder.h"
36 #include "platform/graphics/ImageObserver.h"
37 #include "public/platform/Platform.h"
38 #include "public/platform/WebUnitTestSupport.h"
39
40 #include <gtest/gtest.h>
41
42 namespace WebCore {
43
44 class BitmapImageTest : public ::testing::Test {
45 public:
46 class FakeImageObserver : public ImageObserver {
47 public:
FakeImageObserver()48 FakeImageObserver() : m_lastDecodedSizeChangedDelta(0) { }
49
decodedSizeChanged(const Image *,int delta)50 virtual void decodedSizeChanged(const Image*, int delta)
51 {
52 m_lastDecodedSizeChangedDelta = delta;
53 }
didDraw(const Image *)54 virtual void didDraw(const Image*) OVERRIDE { }
shouldPauseAnimation(const Image *)55 virtual bool shouldPauseAnimation(const Image*) OVERRIDE { return false; }
animationAdvanced(const Image *)56 virtual void animationAdvanced(const Image*) OVERRIDE { }
changedInRect(const Image *,const IntRect &)57 virtual void changedInRect(const Image*, const IntRect&) { }
58
59 int m_lastDecodedSizeChangedDelta;
60 };
61
readFile(const char * fileName)62 static PassRefPtr<SharedBuffer> readFile(const char* fileName)
63 {
64 String filePath = blink::Platform::current()->unitTestSupport()->webKitRootDir();
65 filePath.append(fileName);
66 return blink::Platform::current()->unitTestSupport()->readFromFile(filePath);
67 }
68
69 // Accessors to BitmapImage's protected methods.
destroyDecodedData(bool destroyAll)70 void destroyDecodedData(bool destroyAll) { m_image->destroyDecodedData(destroyAll); }
frameCount()71 size_t frameCount() { return m_image->frameCount(); }
setCurrentFrame(size_t frame)72 void setCurrentFrame(size_t frame) { m_image->m_currentFrame = frame; }
frameDecodedSize(size_t frame)73 size_t frameDecodedSize(size_t frame) { return m_image->m_frames[frame].m_frameBytes; }
decodedFramesCount() const74 size_t decodedFramesCount() const { return m_image->m_frames.size(); }
75
loadImage(const char * fileName)76 void loadImage(const char* fileName)
77 {
78 RefPtr<SharedBuffer> imageData = readFile("/LayoutTests/fast/images/resources/animated-10color.gif");
79 ASSERT_TRUE(imageData.get());
80
81 m_image->setData(imageData, true);
82 EXPECT_EQ(0u, decodedSize());
83
84 size_t frameCount = m_image->frameCount();
85 for (size_t i = 0; i < frameCount; ++i)
86 m_image->frameAtIndex(i);
87 }
88
decodedSize()89 size_t decodedSize()
90 {
91 // In the context of this test, the following loop will give the correct result, but only because the test
92 // forces all frames to be decoded in loadImage() above. There is no general guarantee that frameDecodedSize()
93 // is up-to-date. Because of how multi frame images (like GIF) work, requesting one frame to be decoded may
94 // require other previous frames to be decoded as well. In those cases frameDecodedSize() wouldn't return the
95 // correct thing for the previous frame because the decoded size wouldn't have propagated upwards to the
96 // BitmapImage frame cache.
97 size_t size = 0;
98 for (size_t i = 0; i < decodedFramesCount(); ++i)
99 size += frameDecodedSize(i);
100 return size;
101 }
102
103 protected:
SetUp()104 virtual void SetUp() OVERRIDE
105 {
106 DeferredImageDecoder::setEnabled(false);
107 m_image = BitmapImage::create(&m_imageObserver);
108 }
109
110 FakeImageObserver m_imageObserver;
111 RefPtr<BitmapImage> m_image;
112 };
113
114 // Fails on the WebKit XP (deps) bot, see http://crbug.com/327104
115 #if OS(WIN)
TEST_F(BitmapImageTest,DISABLED_destroyDecodedDataExceptCurrentFrame)116 TEST_F(BitmapImageTest, DISABLED_destroyDecodedDataExceptCurrentFrame)
117 #else
118 TEST_F(BitmapImageTest, destroyDecodedDataExceptCurrentFrame)
119 #endif
120 {
121 loadImage("/LayoutTests/fast/images/resources/animated-10color.gif");
122 size_t totalSize = decodedSize();
123 size_t frame = frameCount() / 2;
124 setCurrentFrame(frame);
125 size_t size = frameDecodedSize(frame);
126 destroyDecodedData(false);
127 EXPECT_LT(m_imageObserver.m_lastDecodedSizeChangedDelta, 0);
128 EXPECT_GE(m_imageObserver.m_lastDecodedSizeChangedDelta, -static_cast<int>(totalSize - size));
129 }
130
131 // Fails on the WebKit XP (deps) bot, see http://crbug.com/327104
132 #if OS(WIN)
TEST_F(BitmapImageTest,DISABLED_destroyAllDecodedData)133 TEST_F(BitmapImageTest, DISABLED_destroyAllDecodedData)
134 #else
135 TEST_F(BitmapImageTest, destroyAllDecodedData)
136 #endif
137 {
138 loadImage("/LayoutTests/fast/images/resources/animated-10color.gif");
139 size_t totalSize = decodedSize();
140 EXPECT_GT(totalSize, 0u);
141 destroyDecodedData(true);
142 EXPECT_EQ(-static_cast<int>(totalSize), m_imageObserver.m_lastDecodedSizeChangedDelta);
143 EXPECT_EQ(0u, decodedSize());
144 }
145
146 } // namespace
147
