stagefright: Fix race condition between MediaCodec and SoftwareRenderer

stagefright: Fix race condition between MediaCodec and SoftwareRenderer

* Set the buffer's format info when it's returned from OMX component.
* Move frame format meta from SoftwareRenderer's ctor to the render call.
  I.e. each frame sent to the renderer carries the format info.
* Reset renderer with the new format instead of re-creating
  SoftwareRenderer when incoming frame's format is changed.

Bug: 13842676
Change-Id: Ibab46f109200bcbdeab13a4cc1bcd0870f2a99fb