Re: simultaneous parameter changes
Re: simultaneous parameter changes
- Subject: Re: simultaneous parameter changes
- From: William Stewart <email@hidden>
- Date: Fri, 16 Mar 2007 18:50:05 -0700
AUEventListener doesn't make decisions about parameters being changed
or not - if the caller is telling us that both X and Y parameter is
being changed, you should be receiving notifications for both - this
sounds like a bug in Live - they aren't calling the event listener,
just calling AudioUnitSetParameter - you should contact them
Bill
On 15/03/2007, at 8:04 AM, Chad Wagner wrote:
Hopefully this is an easy question, but it's been giving me some
problems, so any help would be appreciated.
In my AU's carbon view, I set up an event listener with
AUEventListenerCreate, using a notification interval and
granularity of 0.1 sec. I'm testing it in Ableton Live, which has
a generic 2D control that can be mapped to any 2 parameters of the
AU. When using this, both parameter changes are received correctly
by the AU, but my AUEventListenerProc in the GUI is only called
once for one of the parameters, i.e. if both X and Y values change,
I am only notified of X. (I am notified of Y only if there was no
change in X.) I assume this has to do with the granularity
setting, so I tried reducing that (which isn't really what I want)
and also tried creating a different listener for each parameter
(though still using the same callback proc), but still with the
same results.
I'd like the notification interval and granularity to stay at 0.1
sec, since I really don't care about changes that come faster than
that, but I do need to track each parameter independently and be
notified of the current values. What is the correct way to do this?
Thanks,
Chad
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