Re: audio input and midi output?
Re: audio input and midi output?
- Subject: Re: audio input and midi output?
- From: Matthew Hubble <email@hidden>
- Date: Fri, 29 Apr 2011 15:35:02 +0100
Kevin,
The Audio Unit API provides a callback mechanism to provide MIDI output
to the host, however, very few hosts support this feature, the only one
I am aware of that does is Presonus Studio One. You can search for
"kAudioUnitProperty_MIDIOutputCallback" in the documentation for more
information.
A method you can use is to create a virtual MIDI source from your Audio
Unit, using "MIDISourceCreate" in the Core MIDI API. You can then send
MIDI messages from your virtual source, and route the MIDI in your host.
This is not a great solution, it is much more comfortable to send
messages to the next device in the chain (possible and well supported
with VST), but until the majority of hosts begin to support the MIDI
output callback mechanism it is not really possible.
Matt
On 4/29/11 7:52 AM, Kevin Dixon wrote:
Assuming I were to write an AU with an audio input and a MIDI ouptut,
would I start with AUMIDIEffectBase... Also, what hosts support these
sorts of plugins?
Thanks,
-Kevin
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