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kAudioUnitProperty_StreamFormat notification
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kAudioUnitProperty_StreamFormat notification

  • Subject: kAudioUnitProperty_StreamFormat notification
  • From: Dominic Feira <email@hidden>
  • Date: Mon, 18 Apr 2005 20:53:22 -0400
Hello.

What are the correct steps to handle a kAudioUnitProperty_StreamFormat notification on an input AUHAL?

Currently I am doing:
-- Get the input description from the AudioUnit
-- Get the output description from the AudioUnit
-- Set the output description's sample rate to be that of the new input description.
-- Set the output kAudioUnitProperty_StreamFormat of the AudioUnit to the new description with the correct sample rate.

Well, after doing the above, I no longer get any errors from the AudioUnitRender call, but it turns out that my callback is no longer being called. To test the handling of this notification I have just been changing the sample rate of the input device in HALLab.

I appreciate any help.

Dominic Feira / Code Monkey / Ambrosia Software, Inc.
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