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Add support for deferred sequence numbering.

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With this turned on, packets will be sequence number after the pacing
stage rather that during packetization.
This avoids a race where packets may be sent out of order, and paves
the way for the ability to cull packets from the pacer queue without
causing sequence number gaps.

For now, the feature is off by default. Follow-ups will enable it for
video and audio separately.

Bug: webrtc:11340, webrtc:12470
Change-Id: I6d411d8c85b9047e3e9b05ff4c2c3ed97c579aa1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/208584
Commit-Queue: Erik Språng <sprang@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34661}
This commit is contained in:
Erik Språng
2021-08-06 13:10:11 +02:00
committed by WebRTC LUCI CQ
parent 82c2248511
commit bb90497eaa
11 changed files with 164 additions and 41 deletions
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2
modules/rtp_rtcp/source/packet_sequencer.cc
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@ -77,7 +77,7 @@ void PacketSequencer::SetRtpState(const RtpState& state) {
last_timestamp_time_ms_ = state.last_timestamp_time_ms;
}
void PacketSequencer::PupulateRtpState(RtpState& state) const {
void PacketSequencer::PopulateRtpState(RtpState& state) const {
state.sequence_number = media_sequence_number_;
state.timestamp = last_rtp_timestamp_;
state.capture_time_ms = last_capture_time_ms_;