@Override
 public void onConfigurationChanged(Configuration newConfig) {
   super.onConfigurationChanged(newConfig);
   if (mVideoWidth > 0 && mVideoHeight > 0)
     mVideoSurface.adjustSize(
         getDeviceWidth(this),
         getDeviceHeight(this),
         mVideoSurface.getWidth(),
         mVideoSurface.getHeight());
 }