AudioManager.setAudioSessionOptions({ iosCategory: "record" }) not working

[PierreCapo]

Description

When recording, it is necessary to use before

AudioManager.setAudioSessionOptions({
  iosCategory: "playAndRecord",
  iosMode: "measurement",
  iosOptions: ["mixWithOthers"],
})

iosCategory has an enum case "record", but when using it for recording as the name implies, the buffers generated are empty, so it doesn't work.

Following discussion in #804

Steps to reproduce

AudioManager.setAudioSessionOptions({
  iosCategory: "record",
  iosMode: "measurement",
  iosOptions: ["mixWithOthers"],
})

recorderNode.onAudioReady((event) => {
  const { buffer } = event;
  recordDurationMs.value = recordDurationMs.value + buffer.duration * 1000;
  audioBuffersRef.push(buffer);
});

Snack or a link to a repository

https://snack.expo.io/

React Native Audio API version

0.10.1

React Native version

0.81.5

Platforms

iOS

JavaScript runtime

Hermes

Workflow

Expo Dev Client

Architecture

Fabric (New Architecture)

Build type

None

Device

Real device

Device model

No response

Acknowledgements

Yes

[michalsek]

Thanks for this! We will take a look into this and test it out

Have you tried using it with other modes (like default)?

By checking out the documentation, it seems that the measurement mode might screw things up
https://developer.apple.com/documentation/avfaudio/avaudiosession/mode-swift.struct/measurement?language=objc

This mode disables some dynamics processing but you will never know ahead of time what "some" might mean in apple docs 😄

[PierreCapo]

Thanks for your response @michalsek ! Yes, I have tried with other modes like default and voiceChat but it still doesn't work with record set.