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question regarding parameter automation and "real time bounce" in Logic 8
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question regarding parameter automation and "real time bounce" in Logic 8


  • Subject: question regarding parameter automation and "real time bounce" in Logic 8
  • From: Vince Shumaker <email@hidden>
  • Date: Mon, 26 Jan 2009 17:04:12 -0800

Hello. I posted this question to the pro-apps-dev list a few days ago but did not get a response yet. Hoping someone on this list will be able to assist. Here's the original post:

I have a question regarding parameter automation and the "real time bounce" feature in Logic 8. Basically, I am having trouble receiving kAudioUnitEvent_ParameterValueChange events from the AUEventListener in my AU plug-in. During regular playback, my event listener gets notified as expected, parameters automate, etc. During a real time bounce however, the AUEventListenerProc is not called until *after* the bounce completes. So playing back the output bounce file does not reflect any of the parameter automation. I've tried offline bounce too but get the same result. Slightly worse actually because I seem to only get two parameter change events for each automated parameter, the start value and end value. None of the values in between. Here's how I set up my AUEventListener:

    OSStatus result = AUEventListenerCreate(MyAUEventListener,
                                             this,
                                             (CFRunLoopRef)GetCFRunLoopFromEventLoop(GetCurrentEventLoop()),
                                             kCFRunLoopDefaultMode,
                                             0.050f,
                                             0.050f,
                                             &m_AUEventListener);

Any suggestions? Thanks.
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