[bug] Audio lost / distorted audio on Mac when bluetooth device is connected and user mutes / unmutes.

[ourdex]

Describe the bug

On macOS, when using a Bluetooth audio device (e.g., AirPods) during a call, muting and unmuting the microphone causes audio loss. Users either hear no sound or experience crackling noises.

To Reproduce

1. Initiate an audio/video call with another user.
2. Connect a Bluetooth audio device (e.g., AirPods).
3. While the other user is speaking, mute your microphone and wait for 2–3 seconds.
4. Unmute the microphone.

Expected behavior

Audio should remain clear and uninterrupted regardless of the mute/unmute action.

Platform information

• Flutter version: 3.22.2
• Plugin version: 2.3.2
• Flutter target OS: Mac
• Flutter target OS version: 14.7

P.S: The same behavior can be observed even in the example app.

[ourdex]

@cloudwebrtc . Let me know if you need any other information. Hope you got the problem.

[cloudwebrtc]

Hmm. I have reproduced this issue and looking for the reason.

[skutimechanic]

We have the same problem in our application and, in addition, the audio problem occurs on the iOS platform. The problem on the iOS platform lies in the change of the output device when muting / unmuting the microphone.

To Reproduce

1. Initiate an audio/video call with another user.
2. Connect a Bluetooth audio device (e.g., AirPods).
3. Set bluetooth device as output device (This is done by changing between earpiece/speaker or automatically when a connection is established with the device.)
4. While the other user is speaking, mute / unmute your microphone.

Expected behavior

Audio should remain on the device it was on before the microphone status change.

P.S: I was able to reproduce both of the above problems in the example app