1. Check out our companion app, Forums for Android! Download from Google Play

Access Video Frames via MediaPlayer

Discussion in 'Application Development' started by paulscode, Sep 13, 2010.

  1. paulscode

    paulscode Well-Known Member
    Thread Starter
    38

    Mar 18, 2010
    86
    14
    38
    I am trying to devise a way to access a playing video's current frame into a Bitmap context, without actually displaying the video on the screen (i.e. it is "playing" in memory, but not visible). Digging through the documentation, it seems one way would be through a SurfaceHolder interface. Does anyone know how to create a SurfaceHolder implementation that is not attached to the actual display? I have worked out a basic design, which would go something like this:
    Code (Text):
    1. MediaPlayer mPlayer = new MediaPlayer();
    2. mPlayer.setDataSource( pathToSomeVideoFile );
    3. int width = mPlayer.getVideoWidth();
    4. int height = mPlayer.getVideoHeight();
    5. Bitmap bMap = Bitmap.createBitmap( width, height, Bitmap.Config.ARGB_4444 );
    6. Canvas c = new Canvas( bMap );
    7. SurfaceView sView = new SurfaceView( ????  );  // What goes here?
    8. SurfaceHolder sHolder = sView.getHolder();
    9. mPlayer.setDisplay( sHolder );
    10. mPlayer.prepare();
    11. mPlayer.start();
    12.  
    13. // Then, to grab the current video frame:
    14. sView.draw( c );
    15. // bMap should now hold the current frame
    As you can see, the only problem with this method, is I must supply a "Context" to the SurfaceView constructor, such that it doesn't point to the actual screen. Any ideas what should go in there? Or am I way of track and there is an easier way to accomplish what I'm trying to do here?
     

    Advertisement

Share This Page

Loading...