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Audio Unit Callback buffer question
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Audio Unit Callback buffer question


  • Subject: Audio Unit Callback buffer question
  • From: Luther Baker <email@hidden>
  • Date: Thu, 25 Aug 2011 11:42:17 -0500

When you receive an Audio Unit callback, is the ioData argument preallocated to the correct size?

In other words, I'd like to 'get' the microphone input - my callback is on the input. The callback fires. I assume I need to invoke AudioUnitRender. Do I need to provide my own bufferList to this function or can I provide the AudioBufferList *ioData argument to the callback.

If I can't provide the ioData argument, what exactly is that parameter for?

Thanks,
-Luther


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