1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/android/AndroidDirectTexture.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,59 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef AndroidDirectTexture_h_
1.10 +#define AndroidDirectTexture_h_
1.11 +
1.12 +#include "gfxTypes.h"
1.13 +#include "mozilla/Mutex.h"
1.14 +#include "AndroidGraphicBuffer.h"
1.15 +
1.16 +struct nsIntRect;
1.17 +
1.18 +namespace mozilla {
1.19 +
1.20 +/**
1.21 + * This is a thread safe wrapper around AndroidGraphicBuffer that handles
1.22 + * double buffering. Each call to Bind() flips the buffer when necessary.
1.23 + *
1.24 + * You need to be careful when destroying an instance of this class. If either
1.25 + * buffer is locked by the application of the driver/hardware, bad things will
1.26 + * happen. Be sure that the OpenGL texture is no longer on the screen.
1.27 + */
1.28 +class AndroidDirectTexture
1.29 +{
1.30 +public:
1.31 + AndroidDirectTexture(uint32_t width, uint32_t height, uint32_t usage, gfxImageFormat format);
1.32 + virtual ~AndroidDirectTexture();
1.33 +
1.34 + bool Lock(uint32_t usage, unsigned char **bits);
1.35 + bool Lock(uint32_t usage, const nsIntRect& rect, unsigned char **bits);
1.36 + bool Unlock(bool aFlip = true);
1.37 +
1.38 + bool Reallocate(uint32_t aWidth, uint32_t aHeight);
1.39 + bool Reallocate(uint32_t aWidth, uint32_t aHeight, gfxImageFormat aFormat);
1.40 +
1.41 + uint32_t Width() { return mWidth; }
1.42 + uint32_t Height() { return mHeight; }
1.43 +
1.44 + bool Bind();
1.45 +
1.46 +private:
1.47 + mozilla::Mutex mLock;
1.48 + bool mNeedFlip;
1.49 +
1.50 + uint32_t mWidth;
1.51 + uint32_t mHeight;
1.52 + gfxImageFormat mFormat;
1.53 +
1.54 + AndroidGraphicBuffer* mFrontBuffer;
1.55 + AndroidGraphicBuffer* mBackBuffer;
1.56 +
1.57 + AndroidGraphicBuffer* mPendingReallocBuffer;
1.58 + void ReallocPendingBuffer();
1.59 +};
1.60 +
1.61 +} /* mozilla */
1.62 +#endif /* AndroidDirectTexture_h_ */
