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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef MediaTexture_h
     18 #define MediaTexture_h
     19 
     20 #if USE(ACCELERATED_COMPOSITING)
     21 
     22 #include "RefPtr.h"
     23 #include "LayerAndroid.h"
     24 #include "Vector.h"
     25 #include <GLES2/gl2.h>
     26 #include <ui/GraphicBuffer.h>
     27 #include <utils/RefBase.h>
     28 #include <jni.h>
     29 
     30 namespace android {
     31     class SurfaceTexture;
     32 }
     33 
     34 namespace WebCore {
     35 
     36 typedef void (*FramerateCallbackProc)(ANativeWindow* window, int64_t timestamp);
     37 
     38 class MediaListener;
     39 
     40 class MediaTexture : public android::LightRefBase<MediaTexture> {
     41 
     42 public:
     43     MediaTexture(jobject webViewRef, jobject webViewCoreRef);
     44     ~MediaTexture();
     45 
     46     bool isContentInverted();
     47     void invertContents(bool invertContent);
     48 
     49     void initNativeWindowIfNeeded();
     50     void draw(const TransformationMatrix& contentMatrix,
     51               const TransformationMatrix& videoMatrix,
     52               const SkRect& mediaBounds);
     53 
     54     ANativeWindow* getNativeWindowForContent();
     55     ANativeWindow* requestNativeWindowForVideo();
     56 
     57     void releaseNativeWindow(const ANativeWindow* window);
     58     void setDimensions(const ANativeWindow* window, const SkRect& dimensions);
     59     void setFramerateCallback(const ANativeWindow* window,
     60                               FramerateCallbackProc callback);
     61 
     62 private:
     63     struct TextureWrapper {
     64         GLuint textureId;
     65         sp<android::SurfaceTexture> surfaceTexture;
     66         sp<ANativeWindow> nativeWindow;
     67         sp<MediaListener> mediaListener;
     68         SkRect dimensions; // only used by the video layer
     69     };
     70 
     71     TextureWrapper* createTexture();
     72     void deleteTexture(TextureWrapper* item, bool force = false);
     73 
     74     TextureWrapper* m_contentTexture;
     75     Vector<TextureWrapper*> m_videoTextures;
     76     Vector<GLuint> m_unusedTextures;
     77 
     78     // used to track if the content is to be drawn inverted
     79     bool m_isContentInverted;
     80 
     81     // used to generate new video textures
     82     bool m_newWindowRequest;
     83     sp<ANativeWindow> m_newWindow;
     84 
     85     jobject m_weakWebViewRef;
     86     jobject m_weakWebViewCoreRef;
     87 
     88     android::Mutex m_mediaLock;
     89     android::Condition m_newMediaRequestCond;
     90 };
     91 
     92 
     93 } // namespace WebCore
     94 
     95 #endif // USE(ACCELERATED_COMPOSITING)
     96 
     97 #endif  // MediaTexture_h
     98