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How to deal with kAudioFormatMIDIStream format?

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How to deal with kAudioFormatMIDIStream format?

Subject: How to deal with kAudioFormatMIDIStream format?
From: Pavol Markovic <email@hidden>
Date: Tue, 1 Mar 2005 18:13:54 +0100

Hello, I'd like to output MIDI data from AudioUnit to host or external device using standard "plug-in way" without creating virtual destinations or managing list of MIDI output destinations.

How can one deal with kAudioFormatMIDIStream format. I've found an older Pre-Panther discussion on this topic - http://lists.apple.com/archives/coreaudio-api/2003/Sep/msg00223.html - but I'd like to find out more information. There is no mention on this in AU Documentation, only definition in CoreAudio/CoreAudioTypes.h header.

So my initial thoughts are that I: 1. create on one more output bus (audio outputs buses + 1) and set kAudioFormatMIDIStream = 'midi' as format for it in constructor 2. set bus count read only 3. feed the output with MIDI data in Render call

Now, which hosts do currently support this?

I'm also curious in (kAudioFormatTimeCode = 'time'), how is this supported and what is it's exact purpose.

Thanks in advance,
Pavol Markovic

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