title: What does SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS means?
body: <p>I am trying to display a filtered camera preview, using onPreviewFrame() callback.</p>
  
  <p>The problem is that when i remove this line:
      mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);</p>
  
  <p>to hide the preview, the app crashes. The log reads:
      08-19 15:57:51.042: ERROR/CameraService(59): registerBuffers failed with status -38</p>
  
  <p>What does this mean? Is this documented anywhere?</p>
  
  <p>I am using the CameraPreview from the SDK APIDemos: <a href="http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/CameraPreview.html" rel="noreferrer">http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/CameraPreview.html</a></p>