Philipp Hancke e48851d910 red: only enable RED if its preferred as send codec
only enables RFC 2198 redundancy if it has a higher preference
than Opus. This means it not used by default but can be
chosen with setCodecPreferences.

BUG=webrtc:11640

Change-Id: I84ff2ca518da70440297a667dedba5cf4484eed7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/178742
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31830}
2020-08-03 10:52:07 +00:00
..