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      1 /*
      2  * Copyright 2011, 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 ImagesManager_h
     27 #define ImagesManager_h
     28 
     29 #include "HashMap.h"
     30 #include "SkBitmap.h"
     31 #include "SkBitmapRef.h"
     32 #include "SkRefCnt.h"
     33 #include "Vector.h"
     34 
     35 namespace WebCore {
     36 
     37 class ImageTexture;
     38 class GLWebViewState;
     39 
     40 class ImagesManager {
     41 public:
     42     static ImagesManager* instance();
     43 
     44     ImageTexture* setImage(SkBitmapRef* imgRef);
     45     ImageTexture* retainImage(unsigned imgCRC);
     46     void releaseImage(unsigned imgCRC);
     47 
     48     bool prepareTextures(GLWebViewState*);
     49     int nbTextures();
     50 
     51 private:
     52     ImagesManager() {}
     53 
     54     static ImagesManager* gInstance;
     55 
     56     android::Mutex m_imagesLock;
     57     HashMap<unsigned, ImageTexture*> m_images;
     58 };
     59 
     60 } // namespace WebCore
     61 
     62 #endif // ImagesManager
     63