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AUGraph mixer unit output callback?

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AUGraph mixer unit output callback?

Subject: AUGraph mixer unit output callback?
From: Mike O'Toole <email@hidden>
Date: Wed, 20 May 2009 12:28:44 -0400

Hey,

I have an AudioGraph that contains a Mixer Unit with several render callbacks connected to the default Output unit. Is there a callback or some other way to get access to the final mixed PCM data as it's getting pulled into the Output unit? I'd like to be able to draw a waveform of the mixed audio that's currently playing.

I attempted putting a render callback on the output of the Mixer Unit and that never got called. And putting a render callback on the Output Unit's input seems to kill the connection between the Output Unit and the Mixer Unit, so I just static noise instead of the data from the Mixer Unit's render callbacks.

Thanks,
Mike

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