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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef AndroidDirectTexture_h_
#define AndroidDirectTexture_h_
#include "gfxTypes.h"
#include "mozilla/Mutex.h"
#include "AndroidGraphicBuffer.h"
#include "nsRect.h"
namespace mozilla {
/**
* This is a thread safe wrapper around AndroidGraphicBuffer that handles
* double buffering. Each call to Bind() flips the buffer when necessary.
*
* You need to be careful when destroying an instance of this class. If either
* buffer is locked by the application of the driver/hardware, bad things will
* happen. Be sure that the OpenGL texture is no longer on the screen.
*/
class AndroidDirectTexture
{
public:
AndroidDirectTexture(uint32_t width, uint32_t height, uint32_t usage, gfxImageFormat format);
virtual ~AndroidDirectTexture();
bool Lock(uint32_t usage, unsigned char **bits);
bool Lock(uint32_t usage, const nsIntRect& rect, unsigned char **bits);
bool Unlock(bool aFlip = true);
bool Reallocate(uint32_t aWidth, uint32_t aHeight);
bool Reallocate(uint32_t aWidth, uint32_t aHeight, gfxImageFormat aFormat);
uint32_t Width() { return mWidth; }
uint32_t Height() { return mHeight; }
bool Bind();
private:
mozilla::Mutex mLock;
bool mNeedFlip;
uint32_t mWidth;
uint32_t mHeight;
gfxImageFormat mFormat;
AndroidGraphicBuffer* mFrontBuffer;
AndroidGraphicBuffer* mBackBuffer;
AndroidGraphicBuffer* mPendingReallocBuffer;
void ReallocPendingBuffer();
};
} /* mozilla */
#endif /* AndroidDirectTexture_h_ */
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