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      1 
      2 package android.webkit;
      3 
      4 import android.Manifest.permission;
      5 import android.content.pm.PackageManager;
      6 import android.graphics.SurfaceTexture;
      7 import android.media.MediaPlayer;
      8 import android.webkit.HTML5VideoView;
      9 import android.webkit.HTML5VideoViewProxy;
     10 import android.view.Surface;
     11 import android.opengl.GLES20;
     12 import android.os.PowerManager;
     13 
     14 /**
     15  * @hide This is only used by the browser
     16  */
     17 public class HTML5VideoInline extends HTML5VideoView{
     18 
     19     // Due to the fact that the decoder consume a lot of memory, we make the
     20     // surface texture as singleton. But the GL texture (m_textureNames)
     21     // associated with the surface texture can be used for showing the screen
     22     // shot when paused, so they are not singleton.
     23     private static SurfaceTexture mSurfaceTexture = null;
     24     private int[] mTextureNames;
     25     // Every time when the VideoLayer Id change, we need to recreate the
     26     // SurfaceTexture in order to delete the old video's decoder memory.
     27     private static int mVideoLayerUsingSurfaceTexture = -1;
     28 
     29     // Video control FUNCTIONS:
     30     @Override
     31     public void start() {
     32         if (!getPauseDuringPreparing()) {
     33             super.start();
     34         }
     35     }
     36 
     37     HTML5VideoInline(int videoLayerId, int position,
     38             boolean autoStart) {
     39         init(videoLayerId, position, autoStart);
     40         mTextureNames = null;
     41     }
     42 
     43     @Override
     44     public void decideDisplayMode() {
     45         SurfaceTexture surfaceTexture = getSurfaceTexture(getVideoLayerId());
     46         Surface surface = new Surface(surfaceTexture);
     47         mPlayer.setSurface(surface);
     48         surface.release();
     49     }
     50 
     51     // Normally called immediately after setVideoURI. But for full screen,
     52     // this should be after surface holder created
     53     @Override
     54     public void prepareDataAndDisplayMode(HTML5VideoViewProxy proxy) {
     55         super.prepareDataAndDisplayMode(proxy);
     56         setFrameAvailableListener(proxy);
     57         // TODO: This is a workaround, after b/5375681 fixed, we should switch
     58         // to the better way.
     59         if (mProxy.getContext().checkCallingOrSelfPermission(permission.WAKE_LOCK)
     60                 == PackageManager.PERMISSION_GRANTED) {
     61             mPlayer.setWakeMode(proxy.getContext(), PowerManager.FULL_WAKE_LOCK);
     62         }
     63     }
     64 
     65     // Pause the play and update the play/pause button
     66     @Override
     67     public void pauseAndDispatch(HTML5VideoViewProxy proxy) {
     68         super.pauseAndDispatch(proxy);
     69     }
     70 
     71     // Inline Video specific FUNCTIONS:
     72 
     73     @Override
     74     public SurfaceTexture getSurfaceTexture(int videoLayerId) {
     75         // Create the surface texture.
     76         if (videoLayerId != mVideoLayerUsingSurfaceTexture
     77             || mSurfaceTexture == null
     78             || mTextureNames == null) {
     79             if (mTextureNames != null) {
     80                 GLES20.glDeleteTextures(1, mTextureNames, 0);
     81             }
     82             mTextureNames = new int[1];
     83             GLES20.glGenTextures(1, mTextureNames, 0);
     84             mSurfaceTexture = new SurfaceTexture(mTextureNames[0]);
     85         }
     86         mVideoLayerUsingSurfaceTexture = videoLayerId;
     87         return mSurfaceTexture;
     88     }
     89 
     90     public boolean surfaceTextureDeleted() {
     91         return (mSurfaceTexture == null);
     92     }
     93 
     94     @Override
     95     public void deleteSurfaceTexture() {
     96         mSurfaceTexture = null;
     97         mVideoLayerUsingSurfaceTexture = -1;
     98         return;
     99     }
    100 
    101     @Override
    102     public int getTextureName() {
    103         if (mTextureNames != null) {
    104             return mTextureNames[0];
    105         } else {
    106             return 0;
    107         }
    108     }
    109 
    110     private void setFrameAvailableListener(SurfaceTexture.OnFrameAvailableListener l) {
    111         mSurfaceTexture.setOnFrameAvailableListener(l);
    112     }
    113 
    114 }
    115