commit 4df20baff171e66e0de5604d20ac8fbc162a7083
author Henrik Boström <hbos@webrtc.org> Mon Jan 09 12:57:15 2023
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Tue Jan 10 06:44:27 2023
tree 80cc7914537f5a32c5e44c5ab28e685802baaec0
parent 64f2017b1e088738d3989d6cd5831c8c709bfdcd

Implement GetParameters/GetSources support for unsignaled SSRCs.

Unsignaled SSRCs are only applicable for the receiver case (not sender).
This CL updates the receievr's GetParameters() and GetSources() methods
to lookup parameters/sources by the current SSRC (whether or not it was
signaled) instead of only looking at the signaled SSRC.

To clarify that the `ssrc_` variable inside the [Audio/Video]RtpReceiver
is the signaled ssrc (and not set if the current ssrc is unsignaled),
we rename this variable to `signaled_ssrc_`.

By the looks of it, other APIs like setting volume or packetizers also
have a dependency on the assumptions that the SSRC is signaled. We will
not address that in this CL, but this CL makes that more clear.

Bug: webrtc:14811
Change-Id: I32c93d264ab441ade23a4078639744d25b791742
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/290573
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39051}