Audio Effect API: process reverse stream function

Added function to audio effect interface for processing of
a reverse stream.
This is necessary for audio pre processes like echo cancellation.

Change-Id: I6e12d79dbbed6376acdfc79304b8c0ab3f705eae
6 files changed
tree: 3e6ac78f1dea2eb4bde64c598c21a9b8e87a9db2
  1. camera/
  2. cmds/
  3. drm/
  4. include/
  5. media/
  6. services/