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59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef AndroidDirectTexture_h_
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#define AndroidDirectTexture_h_
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#include "gfxASurface.h"
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#include "nsRect.h"
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#include "mozilla/Mutex.h"
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#include "AndroidGraphicBuffer.h"
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namespace mozilla {
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/**
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* This is a thread safe wrapper around AndroidGraphicBuffer that handles
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* double buffering. Each call to Bind() flips the buffer when necessary.
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*
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* You need to be careful when destroying an instance of this class. If either
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* buffer is locked by the application of the driver/hardware, bad things will
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* happen. Be sure that the OpenGL texture is no longer on the screen.
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*/
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class AndroidDirectTexture
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{
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public:
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AndroidDirectTexture(PRUint32 width, PRUint32 height, PRUint32 usage, gfxASurface::gfxImageFormat format);
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virtual ~AndroidDirectTexture();
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bool Lock(PRUint32 usage, unsigned char **bits);
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bool Lock(PRUint32 usage, const nsIntRect& rect, unsigned char **bits);
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bool Unlock(bool aFlip = true);
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bool Reallocate(PRUint32 aWidth, PRUint32 aHeight);
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bool Reallocate(PRUint32 aWidth, PRUint32 aHeight, gfxASurface::gfxImageFormat aFormat);
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PRUint32 Width() { return mWidth; }
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PRUint32 Height() { return mHeight; }
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bool Bind();
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private:
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mozilla::Mutex mLock;
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bool mNeedFlip;
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PRUint32 mWidth;
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PRUint32 mHeight;
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gfxASurface::gfxImageFormat mFormat;
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AndroidGraphicBuffer* mFrontBuffer;
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AndroidGraphicBuffer* mBackBuffer;
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AndroidGraphicBuffer* mPendingReallocBuffer;
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void ReallocPendingBuffer();
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};
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} /* mozilla */
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#endif /* AndroidDirectTexture_h_ */
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