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/*
* Copyright (C) 2012 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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 "ImageFrameGenerator.h"
#include "ImageDecodingStore.h"
#include "MockImageDecoder.h"
#include "SharedBuffer.h"
#include <gtest/gtest.h>
using namespace WebCore;
namespace {
class ImageFrameGeneratorTest;
// Helper methods to generate standard sizes.
SkISize fullSize() { return SkISize::Make(100, 100); }
SkISize scaledSize() { return SkISize::Make(50, 50); }
class ImageFrameGeneratorTest;
class MockImageDecoderFactory : public ImageDecoderFactory {
public:
static PassOwnPtr<MockImageDecoderFactory> create(ImageFrameGeneratorTest* test)
{
return adoptPtr(new MockImageDecoderFactory(test));
}
virtual PassOwnPtr<ImageDecoder> create();
private:
MockImageDecoderFactory(ImageFrameGeneratorTest* test)
: m_test(test)
{
}
ImageFrameGeneratorTest* m_test;
};
class ImageFrameGeneratorTest : public ::testing::Test, public MockImageDecoderClient {
public:
virtual void SetUp()
{
ImageDecodingStore::initializeOnce();
m_data = SharedBuffer::create();
m_generator = ImageFrameGenerator::create(fullSize(), m_data, true);
m_generator->setImageDecoderFactoryForTesting(MockImageDecoderFactory::create(this));
m_frameBufferRequestCount = 0;
m_frameStatus = ImageFrame::FrameEmpty;
}
virtual void TearDown()
{
ImageDecodingStore::shutdown();
}
virtual void decoderBeingDestroyed()
{
}
virtual void frameBufferRequested()
{
++m_frameBufferRequestCount;
}
virtual ImageFrame::FrameStatus frameStatus()
{
return m_frameStatus;
}
protected:
PassOwnPtr<ScaledImageFragment> createCompleteImage(const SkISize& size)
{
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
bitmap.allocPixels();
return ScaledImageFragment::create(size, bitmap, true);
}
void setFrameStatus(ImageFrame::FrameStatus status) { m_frameStatus = status; }
RefPtr<SharedBuffer> m_data;
RefPtr<ImageFrameGenerator> m_generator;
int m_frameBufferRequestCount;
ImageFrame::FrameStatus m_frameStatus;
};
PassOwnPtr<ImageDecoder> MockImageDecoderFactory::create()
{
MockImageDecoder* decoder = new MockImageDecoder(m_test);
decoder->setSize(fullSize().width(), fullSize().height());
return adoptPtr(decoder);
}
TEST_F(ImageFrameGeneratorTest, cacheHit)
{
const ScaledImageFragment* fullImage = ImageDecodingStore::instance()->insertAndLockCache(
m_generator.get(), createCompleteImage(fullSize()));
EXPECT_EQ(fullSize(), fullImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), fullImage);
const ScaledImageFragment* tempImage = m_generator->decodeAndScale(fullSize());
EXPECT_EQ(fullImage, tempImage);
EXPECT_EQ(fullSize(), tempImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
EXPECT_EQ(0, m_frameBufferRequestCount);
}
TEST_F(ImageFrameGeneratorTest, cacheMissWithScale)
{
const ScaledImageFragment* fullImage = ImageDecodingStore::instance()->insertAndLockCache(
m_generator.get(), createCompleteImage(fullSize()));
EXPECT_EQ(fullSize(), fullImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), fullImage);
// Cache miss because of scaled size not found.
const ScaledImageFragment* scaledImage = m_generator->decodeAndScale(scaledSize());
EXPECT_NE(fullImage, scaledImage);
EXPECT_EQ(scaledSize(), scaledImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), scaledImage);
// Cache hit.
const ScaledImageFragment* tempImage = m_generator->decodeAndScale(scaledSize());
EXPECT_EQ(scaledImage, tempImage);
EXPECT_EQ(scaledSize(), tempImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
EXPECT_EQ(0, m_frameBufferRequestCount);
}
TEST_F(ImageFrameGeneratorTest, cacheMissWithDecodeAndScale)
{
setFrameStatus(ImageFrame::FrameComplete);
// Cache miss.
const ScaledImageFragment* scaledImage = m_generator->decodeAndScale(scaledSize());
EXPECT_EQ(1, m_frameBufferRequestCount);
EXPECT_EQ(scaledSize(), scaledImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), scaledImage);
// Cache hit.
const ScaledImageFragment* fullImage = m_generator->decodeAndScale(fullSize());
EXPECT_NE(scaledImage, fullImage);
EXPECT_EQ(fullSize(), fullImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), fullImage);
// Cache hit.
const ScaledImageFragment* tempImage = m_generator->decodeAndScale(scaledSize());
EXPECT_EQ(scaledImage, tempImage);
EXPECT_EQ(scaledSize(), tempImage->scaledSize());
ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
EXPECT_EQ(1, m_frameBufferRequestCount);
}
// Test that incomplete frames are not cached.
TEST_F(ImageFrameGeneratorTest, cacheMissWithIncompleteDecode)
{
setFrameStatus(ImageFrame::FramePartial);
const ScaledImageFragment* tempImage = m_generator->decodeAndScale(scaledSize());
EXPECT_EQ(1, m_frameBufferRequestCount);
ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
tempImage = m_generator->decodeAndScale(fullSize());
EXPECT_EQ(2, m_frameBufferRequestCount);
ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
tempImage = m_generator->decodeAndScale(scaledSize());
EXPECT_EQ(3, m_frameBufferRequestCount);
ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
}
} // namespace
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