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      1 /*
      2  * Copyright 2010, 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 TexturesGenerator_h
     27 #define TexturesGenerator_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 #include "QueuedOperation.h"
     32 #include "TiledPage.h"
     33 #include "TilePainter.h"
     34 #include <utils/threads.h>
     35 
     36 namespace WebCore {
     37 
     38 using namespace android;
     39 
     40 class BaseLayerAndroid;
     41 class LayerAndroid;
     42 
     43 class TexturesGenerator : public Thread {
     44 public:
     45     TexturesGenerator() : Thread(false)
     46         , m_waitForCompletion(false)
     47         , m_currentOperation(0) { }
     48     virtual ~TexturesGenerator() { }
     49     virtual status_t readyToRun();
     50 
     51     void removeOperationsForPage(TiledPage* page);
     52     void removePaintOperationsForPage(TiledPage* page, bool waitForRunning);
     53     void removeOperationsForFilter(OperationFilter* filter);
     54     void removeOperationsForFilter(OperationFilter* filter, bool waitForRunning);
     55 
     56     void scheduleOperation(QueuedOperation* operation);
     57 
     58 private:
     59     QueuedOperation* popNext();
     60     virtual bool threadLoop();
     61     Vector<QueuedOperation*> mRequestedOperations;
     62     android::Mutex mRequestedOperationsLock;
     63     android::Condition mRequestedOperationsCond;
     64     bool m_waitForCompletion;
     65     QueuedOperation* m_currentOperation;
     66 };
     67 
     68 } // namespace WebCore
     69 
     70 #endif // USE(ACCELERATED_COMPOSITING)
     71 #endif // TexturesGenerator_h
     72