The issue should be fixed by the uploaded patch. Note that for 2-ch audio input, the channels go to the *stereo* configuration set via *Audio MIDI Setup*, while multi-channel audio input (e.g., https://www2.iis.fraunhofer.de/AAC/multichannel.html) follows the *Surround* configurations. See https://github.com/mozilla/cubeb-coreaudio-rs/issues/232#issuecomment-2302658638 for more details.
Bug 1904734 Comment 12 Edit History
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The uploaded patch should fix this issue. Note that for 2-ch audio input, the channels go to the *stereo* configuration set via *Audio MIDI Setup*, while multi-channel audio input (e.g., https://www2.iis.fraunhofer.de/AAC/multichannel.html) follows the *surround* configurations. See https://github.com/mozilla/cubeb-coreaudio-rs/issues/232#issuecomment-2302658638 for more details.