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Diffstat (limited to 'widget/android/AndroidDirectTexture.h')
-rw-r--r-- | widget/android/AndroidDirectTexture.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/widget/android/AndroidDirectTexture.h b/widget/android/AndroidDirectTexture.h new file mode 100644 index 000000000..8582b8582 --- /dev/null +++ b/widget/android/AndroidDirectTexture.h @@ -0,0 +1,58 @@ +/* -*- 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_ */ |