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Re: No sound output with userland driver, multiple output device and audio units.
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Re: No sound output with userland driver, multiple output device and audio units.


  • Subject: Re: No sound output with userland driver, multiple output device and audio units.
  • From: Ed Wynne <email@hidden>
  • Date: Tue, 29 Apr 2014 09:12:37 -0400

On Apr 29, 2014, at 7:12 AM, Ploytec <email@hidden> wrote:
> When I include my userland driver in a multiple output device and use it as master device, there is no audio output nor progress  in audio unit based softwares (iTunes, Audacity...) and I get this kind of error:
>> 29/04/2014 12:54:30,004 iTunes[221]: kAudioUnitErr_TooManyFramesToProcess : inFramesToProcess=1024, mMaxFramesPerSlice=512
> It the built in input, for example, is the master device, everything works as expected.
> What can cause this? What can I do to fix it?

Just a guess… but is your kAudioDevicePropertyBufferFrameSize set to 1024? Maybe you should try 512.

-Ed


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 >No sound output with userland driver, multiple output device and audio units. (From: Ploytec <email@hidden>)

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