With higher frame rates and larger preview frames, we can easily
flood the application with too much data. This patch fakes the
old camera preview mode by doing continuous one-shot frames.
After the previous frame is handled, if the application hasn't
cleared the preview callback, we start another one-shot preview
frame. With this change, the application should never have more
than one preview frame unless it is explicitly saving references
to them.
modified: core/java/android/hardware/Camera.java
a6118c6383