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* Copyright (C) 2012 Google Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef ImageDecodingStore_h
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#define ImageDecodingStore_h
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#include "ScaledImageFragment.h"
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#include "SkSizeHash.h"
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#include <wtf/OwnPtr.h>
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#include <wtf/PassOwnPtr.h>
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#include <wtf/ThreadingPrimitives.h>
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#include <wtf/Vector.h>
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class ImageFrameGenerator;
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class ImageDecodingStore {
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static PassOwnPtr<ImageDecodingStore> create() { return adoptPtr(new ImageDecodingStore); }
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~ImageDecodingStore();
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static ImageDecodingStore* instance();
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static void initializeOnce();
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static void shutdown();
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const ScaledImageFragment* lockCompleteCache(const ImageFrameGenerator*, const SkISize& scaledSize);
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const ScaledImageFragment* lockIncompleteCache(const ImageFrameGenerator*, const SkISize& scaledSize);
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void unlockCache(const ImageFrameGenerator*, const ScaledImageFragment*);
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const ScaledImageFragment* insertAndLockCache(const ImageFrameGenerator*, PassOwnPtr<ScaledImageFragment>);
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static PassOwnPtr<CacheEntry> create() { return adoptPtr(new CacheEntry()); }
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static PassOwnPtr<CacheEntry> createAndUse(PassOwnPtr<ScaledImageFragment> image) { return adoptPtr(new CacheEntry(image, 1)); }
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CacheEntry(PassOwnPtr<ScaledImageFragment> image, int count)
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OwnPtr<ScaledImageFragment> cachedImage;
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Vector<OwnPtr<CacheEntry> > m_cacheEntries;
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typedef std::pair<const ImageFrameGenerator*, SkISize> CacheIdentifier;
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typedef HashMap<CacheIdentifier, CacheEntry*> CacheMap;
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// Protect concurrent access to all instances of CacheEntry stored in m_cacheEntries and
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// m_cacheMap as well as the containers.
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} // namespace WebCore