philipel 34852cf707 H264SpsPpsTracker class which keep tracks of SPS/PPS.
The H264SpsPpsTracker class:
 - Keeps track of all received SPS/PPS.
 - Decides whether a packet should be inserted into the PacketBuffer or not.
   - Don't insert if this packet only contains SPS and/or PPS.
   - Don't insert if this is the first packet of and IDR and we have not
     received the required SPS/PPS.
 - Insert start codes, and in the case of the first packet of an IDR prepend
   the bitstream with the given SPS/PPS for this IDR.

BUG=webrtc:5514

Review-Url: https://codereview.webrtc.org/2466993003
Cr-Commit-Position: refs/heads/master@{#14906}
2016-11-03 11:03:06 +00:00
..