Allow sniffers to return a packet of opaque data that the corresponding extractor can take advantage of to not duplicate work already done sniffing. The mp3 extractor takes advantage of this now.

Change-Id: Icb77ae3ee95a69c7da25b4d3b8696c0a2d33028a
related-to-bug: 2948754
17 files changed
tree: 06386bceb568bf27c3fff03139ac0745ec1c4eba
  1. camera/
  2. cmds/
  3. include/
  4. media/
  5. services/