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91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* James Willcox <jwillcox@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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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