commit b9b0890541f245c5ab672c530e44776e7dbaef87
author Taylor Brandstetter <deadbeef@webrtc.org> Fri Sep 10 01:34:06 2021
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Fri Sep 10 21:28:23 2021
tree b0c68e01005a4f0b27ec394c9331323c5cf69b73
parent 3a9640a5aa939b137fde2f39baeed07245c85647

Fix error adding receive stream after packet received from non-primary SSRC.

The non-primary SSRC being RTX, for example. Normally a default stream
wouldn't be created from RTX packets, but there is a window of time
where packets can be received before the video engine has receive
parameters/payload type mappings, so it creates one anyway.

Then in AddRecvStream, normally the default stream would be destroyed
before creating a new one, but this only happens for sp.first_ssrc().
Resulting in the error "Receive stream with SSRC 'X' already exists".

Fixed by simply iterating over all SSRCs.

Bug: webrtc:13171
Change-Id: Iaf4e4a3ceafddee3d9b2d1e24af68be56f9695de
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231633
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Commit-Queue: Taylor Brandstetter <deadbeef@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#34971}