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Wire up non-sender RTT for audio, and implement related standardized stats.

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The implemented stats are:
- https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-roundtriptime
- https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-totalroundtriptime
- https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-roundtriptimemeasurements

Bug: webrtc:12951, webrtc:12714
Change-Id: Ia362d5c4b0456140e32da79d40edc06ab9ce2a2c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226956
Commit-Queue: Ivo Creusen <ivoc@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#34861}
This commit is contained in:
Ivo Creusen
2021-08-26 17:35:51 +00:00
committed by WebRTC LUCI CQ
parent 58157b5cd2
commit fb0dca6c05
30 changed files with 552 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
modules/rtp_rtcp/source/rtp_rtcp_interface.h
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@ -153,7 +153,7 @@ class RtpRtcpInterface : public RtcpFeedbackSenderInterface {
// Stats for RTCP sender reports (SR) for a specific SSRC.
// Refer to https://tools.ietf.org/html/rfc3550#section-6.4.1.
struct SenderReportStats {
// Arrival NPT timestamp for the last received RTCP SR.
// Arrival NTP timestamp for the last received RTCP SR.
NtpTime last_arrival_timestamp;
// Received (a.k.a., remote) NTP timestamp for the last received RTCP SR.
NtpTime last_remote_timestamp;
@ -170,6 +170,16 @@ class RtpRtcpInterface : public RtcpFeedbackSenderInterface {
// https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-reportssent.
uint64_t reports_count;
};
// Stats about the non-sender SSRC, based on RTCP extended reports (XR).
// Refer to https://datatracker.ietf.org/doc/html/rfc3611#section-2.
struct NonSenderRttStats {
// https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-roundtriptime
absl::optional<TimeDelta> round_trip_time;
// https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-totalroundtriptime
TimeDelta total_round_trip_time = TimeDelta::Zero();
// https://www.w3.org/TR/webrtc-stats/#dom-rtcremoteoutboundrtpstreamstats-roundtriptimemeasurements
int round_trip_time_measurements = 0;
};
// **************************************************************************
// Receiver functions
@ -403,6 +413,8 @@ class RtpRtcpInterface : public RtcpFeedbackSenderInterface {
virtual std::vector<ReportBlockData> GetLatestReportBlockData() const = 0;
// Returns stats based on the received RTCP SRs.
virtual absl::optional<SenderReportStats> GetSenderReportStats() const = 0;
// Returns non-sender RTT stats, based on DLRR.
virtual absl::optional<NonSenderRttStats> GetNonSenderRttStats() const = 0;
// (REMB) Receiver Estimated Max Bitrate.
// Schedules sending REMB on next and following sender/receiver reports.