Re: Transport start/stop for Effect Units needed
Re: Transport start/stop for Effect Units needed
- Subject: Re: Transport start/stop for Effect Units needed
- From: Chris Rogers <email@hidden>
- Date: Thu, 15 May 2003 14:25:31 -0700
Howard,
Have you looked at the kAudioUnitProperty_HostCallbacks property
which allows the host to install
a callback which the AudioUnit may call to determine transport
timing information? The property uses the HostCallbackInfo structure
which is defined in AudioUnitProperties.h. I realize that this deals
with units of beats,
but perhaps it could still be useful in your case.
I'm not sure I understand all of the issues here, but to some extent
your custom AudioUnitView UI
can pass more sophisticated messages to the AudioUnit, using custom
properties and so forth.
The AudioUnit should be able to determine if it's just starting to
play based on its "reset"
state (I think).
Chris Rogers
Core Audio
Apple Computer
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