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RenderCallback only called twice
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RenderCallback only called twice


  • Subject: RenderCallback only called twice
  • From: Dominic Feira <email@hidden>
  • Date: Mon, 9 May 2005 15:23:09 -0400

Hello.

I have a new bug that I'm trying to fix. This problem only happens on Tiger. I have a graph that looks basically like this:

Render Callback - [AUConverter]  -- [Mixer] --- [AUConverter] - Output

It is possible for there to be more mixer inputs, but this the simplest case.

This graph is basically run doing offline rendering and its supposed to lock in the Render Callback until data is available.

I am calling AudioUnitRender on the output AUConverter and the Render Callback is only being called twice. Since it isn't locking like its supposed to the thread that calls AudioUnitRender on the output is going hog wild and is consuming 100% CPU.

I have yet to have experience this or have it reported by beta testers under Panther. Does anybody have any idea why my callback would only get called twice? Or get replaced by another callback? Or perhaps maybe the graph is being modified somehow so that the callback is no longer referenced.

I'm really stumped at this point. Again, this appears to be a Tiger only problem.

Dominic Feira / Code Monkey / Ambrosia Software, Inc.
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