tree b3e949c65eb0ed289fca5590430c027099a1b439
parent f7706aecdc1f5b0b138a313fa17c80c84bf26ea0
author Alex Loiko <aleloi@webrtc.org> 1519735907 +0100
committer Commit Bot <commit-bot@chromium.org> 1519746459 +0000

Reland of "Choose between APM-AGC-Limiter and Apm-AGC2-fixed-gain_controller."

The webrtc::AudioMixer uses a limiter component. This CL allows
changes the APM-AGC limiter to the APM-AGC2 limiter though a Chrome
field trial.

The AGC2 limiter has a float interface. We plan to eventually switch
to the AGC2 limiter. Therefore, we will now mix in de-interleaved
floats. Float mixing will happen both when using the old limiter and
when using the new one.

After this CL the mixer will support two limiters. The limiters have
different interfaces and need different processing steps. Because of
that, we make (rather big) changes to the control flow in
FrameCombiner. For a short while, we will mix in deinterleaved floats
when using any limiter.

Originally landed in https://webrtc-review.googlesource.com/c/src/+/56141/

Reverted in https://webrtc-review.googlesource.com/c/src/+/57940
because of both breaking compilation and having a severe error. The
error is fixed and a test is added. The compilation issue is fixed.

Bug: webrtc:8925
Change-Id: Ieba138dee9652c826459fe637ae2dccbbc06bcf0
Reviewed-on: https://webrtc-review.googlesource.com/58085
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Alex Loiko <aleloi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22207}