DRM framework support:
- add a sniffer for DRM files
- add DRMSource and DRMExtractor for es_based DRM
- add pread in FileSource.cpp for container_based DRM
- add native DRM framework API calls in the player for
  DRM audio/video playback

Change-Id: I4b9ef19165c9b4f44ff40eeededb9a665e78a90f
15 files changed
tree: 6b6d165ba952924f1cd1b77f3a0903e5da31445a
  1. camera/
  2. cmds/
  3. drm/
  4. include/
  5. media/
  6. services/