tree d64ace45412715114585df61c53d2f5ea58d7999
parent 8a74f1bc3f64943cafdc7c6c7e1900b4a3e9e4b1
author James Dong <jdong@google.com> 1275001558 -0700
committer James Dong <jdong@google.com> 1275068660 -0700

Avoid copying for input recording frames in CameraSource

This is the part one.

- Let CameraSource be a MediaBufferObserver. It releases the recording frame when the ref count of a MediaBuffer containing
  the recording frame drops to 0.

  This reduces the CPU load from 90+% down to 50-60%.

Part two is related to the avoidance of copying the input video frames to the video encoder.
However, we are not able to use OMX_UseBuffer directly. Still work on the second part.

Change-Id: I906f1d054ae8bdcf82e1617f1fc120152f2eb2eb