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/*
* Copyright 2010, 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 DoubleBufferedTexture_h
#define DoubleBufferedTexture_h
#include "SharedTexture.h"
#include <EGL/egl.h>
namespace WebCore {
class DoubleBufferedTexture {
public:
// consumer thread functions
DoubleBufferedTexture(EGLContext sharedContext);
virtual ~DoubleBufferedTexture();
// provider thread functions
virtual TextureInfo* producerLock();
virtual void producerRelease();
virtual void producerReleaseAndSwap();
EGLContext producerAcquireContext();
// consumer thread functions
TextureInfo* consumerLock();
void consumerRelease();
protected:
SharedTexture* getReadableTexture();
SharedTexture* getWriteableTexture();
SharedTexture m_textureA;
SharedTexture m_textureB;
private:
SharedTexture* m_writeableTexture;
SharedTexture* m_lockedConsumerTexture; // only used by the consumer
EGLDisplay m_display;
EGLContext m_pContext;
EGLContext m_cContext;
bool m_supportsEGLImage;
};
} // namespace WebCore
#endif // DoubleBufferedTexture_h
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