Audio in ARKit causes a crash when returning from background

Question

gebs OP

Created Jul ’20

Replies 3

Boosts 0

Views 1.8k

Participants 2

I have an ARKit app that plays sounds using playaudio

Code Block  let audioPlay = SCNAction.playAudio(audioSource!, waitForCompletion: false)

when the app moves to the background i get the following :
AURemoteIO.cpp:1590:Start: AUIOClientStartIO failed (561015905)
AVAEInternal.h:109 [AVAudioEngineGraph.mm:1544:Start: (err = PerformCommand(*ioNode, kAUStartIO, NULL, 0)): error 561015905

when it comes back to the foreground and a sound is played it crashes and i get the following:
[avae] AVAEInternal.h:76 required condition is false: [AVAudioPlayerNode.mm:712:ScheduleBuffer: (outputFormat.channelCount == buffer.format.channelCount)]

in crash logs the crash is happening here :
AVAudioFileImpl::CheckClientFormatSet() + 60

tried fixes:

Enable background audio works but my app does not have any logical use for background audio
self.sceneView.audioEngine.mainMixerNode.outputVolume = 0.0 when app moves to background. still crashes but less often

Any help would be appreciated.

Answered by Sunrise83 in 624868022

Is there some solution about this issue?

I have tried to add following code to AppDelegate, it solves the issue but sounds continue playing when app runs in the background.

let audioSession = AVAudioSession.sharedInstance()

do {

// Set the audio session category, mode, and options.

try audioSession.setCategory(.playback, mode: .moviePlayback, options: [])

} catch {

print("Failed to set audio session category.")

}

Boost

Answer 1

gebs OP

Jul ’20

Sometimes this happens too
[aurioc]AURemoteIO.cpp:1086:Initialize: failed: 561015905 (enable 2, outf< 2 ch,   0 Hz, Float32, non-inter> inf< 2 ch,   0 Hz, Float32, non-inter>)
[aurioc] AURemoteIO.cpp:1086:Initialize: failed: 561015905 (enable 2, outf< 2 ch, 44100 Hz, Float32, non-inter> inf< 2 ch,   0 Hz, Float32, non-inter>)
[avae]      AVAEInternal.h:109 [AVAudioEngineGraph.mm:1344:Initialize: (err = PerformCommand(*outputNode, kAUInitialize, NULL, 0)): error 561015905

0

Answer 2

Sunrise83 OP

Aug ’20

Accepted Answer

Is there some solution about this issue?

I have tried to add following code to AppDelegate, it solves the issue but sounds continue playing when app runs in the background.

let audioSession = AVAudioSession.sharedInstance()

do {

// Set the audio session category, mode, and options.

try audioSession.setCategory(.playback, mode: .moviePlayback, options: [])

} catch {

print("Failed to set audio session category.")

}

1

Answer 3

gebs OP

Apr ’21

this fixes the issue only if your app has a logical use for background audio

0