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CoreAudio Error - AVAudioIONodeImpl.mmhaps65: _GetHWFormat: Required False: hwFormat

I work with two application modules:

1) A recording module with this audioSession setting:

try audioSession.setCategory(AVAudioSessionCategoryRecord)
try audioSession.setMode(AVAudioSessionModeMeasurement)
try audioSession.setPreferredIOBufferDuration(0.05)
try self.audioSession.setActive(true)

2) A recording module with this audioSession setting:

try audioSession.setCategory(AVAudioSessionCategoryPlayback) 
try audioSession.setMode(AVAudioSessionModeDefault)
try self.audioSession.setActive(true)

For each transition from 1-> 2 and 2-1 we have a try self.audioSession.setActive(false)

If I go from 1) module to 2) or repeat 1) everything works fine. Then, if from 2) I came to 1) I get this error ontry self.audioSession.setActive(true)

This is mistake:

ERROR:    [0x16e10b000] >avae> AVAudioIONodeImpl.mm:365: 
_GetHWFormat: required condition is false: hwFormat

What is the reason for this error? I can't find any help in the Apple iOS documentation to figure out where the problem is.

Does anyone have any advice?

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1 answer

iOS, Apple Bug, ID 29890198. .

, , AVAudioSessionCategoryPlayAndRecord AVAudioSessionCategoryRecord:

try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord)

Apple: https://forums.developer.apple.com/thread/73166

, .

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Source: https://habr.com/ru/post/1670877/

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