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/*
* Copyright 2009, The Android Open Source Project
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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.
*/
#ifndef WebCore_BitmapAllocatorAndroid_DEFINED
#define WebCore_BitmapAllocatorAndroid_DEFINED
#include "SkBitmap.h"
namespace WebCore {
class SharedBuffer;
class SharedBufferStream;
/** Returns a custom allocator that takes advantage of ashmem and global
pools to best manage the pixel memory for a decoded image. This should
be used for images that are logically immutable, and can be re-decoded
at will based on available memory.
*/
class BitmapAllocatorAndroid : public SkBitmap::Allocator {
public:
BitmapAllocatorAndroid(SharedBuffer* data, int sampleSize);
virtual ~BitmapAllocatorAndroid();
// overrides
virtual bool allocPixelRef(SkBitmap*, SkColorTable*);
private:
SharedBufferStream* fStream;
int fSampleSize;
};
}
size_t computeMaxBitmapSizeForCache();
#endif
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