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      1 /*
      2  * Copyright 2012, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef CanvasTexture_h
     27 #define CanvasTexture_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 #include "CanvasLayer.h"
     32 
     33 #include <wtf/RefPtr.h>
     34 #include <utils/threads.h>
     35 
     36 namespace android {
     37 class GLConsumer;
     38 class Surface;
     39 }
     40 
     41 namespace WebCore {
     42 
     43 class CanvasTexture : public ThreadSafeRefCounted<CanvasTexture> {
     44 
     45 public:
     46     /********************************************
     47      * Called by both threads
     48      ********************************************/
     49     static PassRefPtr<CanvasTexture> getCanvasTexture(CanvasLayer* layer);
     50     bool setHwAccelerated(bool hwAccelerated);
     51 
     52     /********************************************
     53      * Called by WebKit thread
     54      ********************************************/
     55     void setSize(const IntSize& size);
     56     android::Surface* nativeWindow();
     57     bool uploadImageBuffer(ImageBuffer* imageBuffer);
     58     bool hasValidTexture() { return m_hasValidTexture; }
     59 
     60     /********************************************
     61      * Called by UI thread WITH GL context
     62      ********************************************/
     63     virtual ~CanvasTexture();
     64     void requireTexture();
     65     GLuint texture() { requireTexture(); return m_texture; }
     66     bool updateTexImage();
     67 
     68 private:
     69     /********************************************
     70      * Called by both threads
     71      ********************************************/
     72     void destroySurfaceTextureLocked();
     73 
     74     /********************************************
     75      * Called by WebKit thread
     76      ********************************************/
     77     CanvasTexture(int layerId);
     78     bool useSurfaceTexture();
     79 
     80     IntSize m_size;
     81     int m_layerId;
     82     GLuint m_texture;
     83     android::Mutex m_surfaceLock;
     84     sp<android::GLConsumer> m_surfaceTexture;
     85     sp<android::Surface> m_ANW;
     86     bool m_hasValidTexture;
     87     bool m_useHwAcceleration;
     88 
     89 };
     90 
     91 } // namespace WebCore
     92 
     93 #endif // USE(ACCELERATED_COMPOSITING)
     94 
     95 #endif // CanvasTexture_h
     96