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Re: AUGraph and output callback
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Re: AUGraph and output callback


  • Subject: Re: AUGraph and output callback
  • From: Aran Mulholland <email@hidden>
  • Date: Wed, 04 Jan 2012 09:35:43 +1100

and you will probably want to look into ExtAudioFileWriteAsync to
write to the audio file from that render callback

On Wed, Jan 4, 2012 at 1:55 AM, Daniel Tapie <email@hidden> wrote:
> OK, so for the future generations, here what I was missing (and that does the trick for capturing the output of an audio unit): the AudioUnitAddRenderNotify call.
>
> Thanks everyone for their help !
>
>
> Daniel Tapie
>
>
> On 3 Jan 2012, at 13:48, Heinrich Fink wrote:
>
>> Hi Daniel,
>>
>> On Jan 3, 2012, at 11:24 , Daniel Tapie wrote:
>>
>>> So is there a way to insert a callback at the output of the graph in order to get access to the samples ? There would be no synchronization issue since we will merely save them to a file.
>>
>> Have you looked at CAAudioUnitOutputCapturer.h in /Developer/Extras/CoreAudio/PublicUtility?
>>
>> If I understood your setup correctly, you would setup the capturer to listen to the output bus (0) of the AUHal.
>>
>> best regards,
>>
>> Heinrich Fink
>
>
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  • Follow-Ups:
    • Re: AUGraph and output callback
      • From: Daniel Tapie <email@hidden>
References: 
 >AUGraph and output callback (From: Daniel Tapie <email@hidden>)
 >Re: AUGraph and output callback (From: Heinrich Fink <email@hidden>)
 >Re: AUGraph and output callback (From: Daniel Tapie <email@hidden>)

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