title: Android custom camera magnify preview
body: <p>I have a custom camera application with the deprecated camera api and a surfaceview. I want to be able to magnify the live feed returned from the camera. I have tried with zoom but I am only limited to the maximum zoom value which is normally 4x but I want more than that. Any ideas on how to do that? I know it is possible because of an app called 30x Zoom in google play. How is that possible? What am I missing?</p>