tree ee69fd357cb56e18c8977b00b923596e8348f311
parent 086b9073d419f3e4290a388f5158755584c9a618
author Elad Alon <eladalon@webrtc.org> 1554371034 +0200
committer Commit Bot <commit-bot@chromium.org> 1554375012 +0000

Introduce RtpSequenceNumberMap

The video encoder should be informed of incoming LossNotification
RTCP messages. Since it is unaware of RTP sequence numbers,
or anything else RTP-related, the sequence numbers mentioned
in the RTCP message must first be mapped to timestamps,
since those are meaningful to the encoder.

This CL introduces RtpSequenceNumberMap, which maps RTP sequence
numbers to timestamps, while providing:
1. Capping the number of entries.
2. Wrap-around handling.

RtpSequenceNumberMap also remembers which packets were first
and/or last in the frame.

Later CLs will wire this up.

Bug: webrtc:10501
Change-Id: Ie0662cdb5706a3bcf63aa2934816a9df88439357
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/130497
Commit-Queue: Elad Alon <eladalon@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27448}