Android TextureView.getBitmap() is very slow
<p>I have an Android app with the camera configured to send its preview to a TextureView. In the onSurfaceTextureUpdated method of my SurfaceTextureListener I pull out the preview frame as a bitmap using:</p>

<pre><code>textureView.getBitmap(existingBitmap);
</code></pre>

<p>It works fine, but takes a very long time (about 200-250 ms for a 720x1280 image). It seems like this should go much faster. Any thoughts on how I can improve the performance of this operation?</p>
