commit c6283a2cfc7e46a952d9215efcc40b80d0927ab0
author Tomas Gunnarsson <tommi@webrtc.org> Wed Feb 04 19:59:49 2026
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed Feb 04 20:00:21 2026
tree 0c1235c55c831529a33896f9dbbcb75d80f151dd
parent e7702dce9bce51108af9ddec7a1b877f79def0d7

Revert "Reland "Activate adaptive channel mixing when the echo canceller runs in stereo""

This reverts commit 5ad42502a816e90fcb8ff1d157267f676fe8ebc9.

Reason for revert: broke the chromium roll.

Original change's description:
> Reland "Activate adaptive channel mixing when the echo canceller runs in stereo"
>
> This reverts commit 8c9f8a0fc026f856961845e4cb835237aeb61304.
>
> Reason for revert: The issues in code that this CL relies on have now been addressed and the CL should now work as intended.
>
> Original change's description:
> > Revert "Activate adaptive channel mixing when the echo canceller runs in stereo"
> >
> > This reverts commit 82a3659e1164aeb4f3ace437a061684734786d50.
> >
> > Reason for revert: Seems to be breaking in chromium:
> > https://chromium-review.googlesource.com/c/chromium/src/+/7490942?tab=checks
> >
> > #
> > # Fatal error in: third_party/webrtc/modules/audio_processing/audio_buffer.cc, line 152
> > # last system error: 2
> > # Check failed: !use_adaptive_downmixing || buffer_internal_num_channels_ == 2
> > # 
> >
> > Original change's description:
> > > Activate adaptive channel mixing when the echo canceller runs in stereo
> > >
> > > This CL activates adaptive channel mixing when the echo canceller runs in stereo mode.
> > > The mixing is provided by the CaptureRemixer class.
> > > The adaptive mixing is activated behind a finch-based kill-switch that allows it to be
> > > activated.
> > >
> > > Bug: webrtc:42221468
> > > Change-Id: I5c4e79edb69752bbbb4c1cfe9271d1224fb695aa
> > > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/433640
> > > Commit-Queue: Per Åhgren <peah@webrtc.org>
> > > Reviewed-by: Tomas Lundqvist <tomasl@google.com>
> > > Cr-Commit-Position: refs/heads/main@{#46678}
> >
> > Bug: webrtc:42221468
> > Change-Id: Ifc3f489e0fe8b4da1b891fd0dd425280a8698fdf
> > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/442441
> > Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> > Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> > Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org>
> > Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
> > Cr-Commit-Position: refs/heads/main@{#46685}
>
> Bug: webrtc:42221468
> Change-Id: I720df6d70de705a1027907d3cd2758d6b569cd75
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/444140
> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Commit-Queue: Per Åhgren <peah@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#46800}

Bug: webrtc:42221468
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: If52e241869547996452f62aff9baba943f459723
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/446340
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#46809}