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Problems using AudioOutputUnit
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Problems using AudioOutputUnit


  • Subject: Problems using AudioOutputUnit
  • From: Louis Sinclair <email@hidden>
  • Date: Fri, 06 Feb 2004 09:06:13 -0600

Hello,

After reading Mr. Stewart's excellent background posts on utilizing AudioOutputUnits for controlling which outputs are used on a multi-channel device, I was finally able to route audio where I wanted on two different multi-channel devices, each with a different buffer arrangement.

The problem now is that I can no longer get audio to come out of the 'built-in audio' device. All calls to CoreAudio/AudioUnit functions seem to return with no errors, but the callback function is not getting called. I know this *should* work, as I can get the 'PlayAudioFileLite' sample code to output to any of my devices (including the built-in audio) using the Output Audio Unit.

Does anyone have any suggestions as to what would prevent the callback function from being called, or at least how to determine programmatically if things are not getting set up properly?

Thanks in advance.

--
Louis
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