macOS audio recording error: input_callback: AudioUnitRender failed, code: -10863

[wenbingzhang]

Godot version

v3.4.2

System information

macos 11.6 GLES2

Issue description

input_callback: AudioUnitRender failed, code: -10863
drivers/coreaudio/audio_driver_coreaudio.cpp:237 @ input_callback()

Similar problems and solutions：baresip/baresip#601
I hope a great god can solve this problem.

Steps to reproduce

/Applications/Utilities/Audio\ MIDI\ Setup.app SampleRate 48000
godot MixRate 44100

It can be reproduced by using plug-in.

Minimal reproduction project

https://github.com/c-as/godot-voip

[akien-mga]

Is this still reproducible in 4.0 RC 3 or later?

[wenbingzhang]

Is this still reproducible in 4.0 RC 3 or later?

I just tested it and it can be reproduced.

[doing-fine-thanks]

Hey, just ran into this issue in 4.2dev6.

[sean-kintone]

Official Mic Record Demo project on MacOS also has this error, and fails to record microphone sound as well:

Error:

E 0:00:00:0685   input_callback: AudioUnitRender failed, code: -10863
  <C++ Source>   drivers/coreaudio/audio_driver_coreaudio.cpp:238 @ input_callback()

Demo App:
https://github.com/godotengine/godot-demo-projects/tree/master/audio/mic_record

Mac m1 Sonoma 14.2.1
Godot 4.2.1 Stable

Steps:

Open Project, Click Record.

[bruvzg]

The root of the problem seems to be "mix rate" in the project settings, if it's not matching mic mix rate it won't work.

[bruvzg]

It's also won't work if sampling rate for output is too different.

e.g., external mic with 16KHz rate and output with 44.1KHz, setting rate for both to 16KHz will not work in this case. But everything in the engine except mix rate to be the same for all streams, so I have no idea to fix it.

[sean-kintone]

I have confirmed that manually setting my microphone to match the hz in the sample project via macos's settings allows audio to be recorded.
This works for both internal and external microphone.
Maybe I will try to test that PR linked, because having an entire class of input (audio input) not working on linux or macos fixed might help a lot of people