Just as a starting point: if you grep that error in the public audio headers,
you will find it is:
AVAudioSessionErrorCodeCannotStartPlaying = '!pla',
/* 0x21706C61, 561015905 */
with description:
@constant AVAudioSessionErrorCodeCannotStartPlaying
The app is not allowed to start recording and/or playing,
usually because of a lack of audio key in
its Info.plist. This could also happen if the app has this key
but uses a category that can't record
and/or play in the background (AVAudioSessionCategoryAmbient,
AVAudioSessionCategorySoloAmbient, etc.).
> On Jan 19, 2015, at 12:11 PM, Beinan Li <[email protected]> wrote:
>
> Hi CoreAudio,
>
> Our app used to handle interruption correctly with the registered
> interruption listener.
> Now on iOS 8 under kAudioSessionCategory_AmbientSound category,
> whenever we reject a phone call, the call to AudioOutputUnitStart() for
> resuming the
> audio pipeline always returns:
>
> ERROR: [0x3afe09dc] 1230: AUIOClient_StartIO failed (561015905)
>
> And our apps will have no sound as a result.
>
> We set it to retry on fails but it would always fail on retries.
>
> We were we missing?
>
> Thanks,
> Beinan
>
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