TimestampExtrapolator maps RTP timestamps of received video frames
to local timestamps. As part of this mapping, the clock drift
between the local and remote clock is estimated.
Add the histogram WebRTC.Video.EstimatedClockDrift_ppm to log the
relative clock drift in points per million.
Bug: b/363166487
Change-Id: I0c2e628ef72c05a93e1f3138c8f71c77467130b7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/368342
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#43413}
The `TimestampExtrapolator` is only used by the `VCMTiming`
class, despite there being references to it from both
`modules/rtp_rtcp/BUILD.gn` and `modules/video_coding/BUILD.gn`.
Bug: webrtc:14111
Change-Id: If1a02a56a0c83b13d619ca08dc76c884fa829369
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/275482
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Johannes Kron <kron@webrtc.org>
Commit-Queue: Rasmus Brandt <brandtr@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#38093}
