Re: Clump name and AULab
Re: Clump name and AULab
- Subject: Re: Clump name and AULab
- From: William Stewart <email@hidden>
- Date: Wed, 26 Jul 2006 12:30:42 -0700
On 26/07/2006, at 7:54 AM, philippe wicker wrote:
Hi all,
I have regrouped part parameters of a music device AU into some
clumps and I'm wandering how a host proceeds to query the clump
names. When the AU generic view is opened within AULab, the clumps
appear as boxes containing the parameters, but the clump name does
not show up.
Is it a normal AULab behavior?
AULab's view will show the clump names if they are present - our
Multiband compressor should have these
What do I need to implement within the AU code to return the clump
names to a host?
kAudioUnitProperty_ParameterClumpName AudioUnitParameterNameInfo
(read)
This works in a similar manner to the ParameterIDName property,
except that the inID
value is one of the clumpID's that are returned with the AU's
ParameterInfo struct.
I assume I need to write some code in my overriden GetProperty
method. How can I query these clump names? I mean, which scope and
element numbers do I need to use when I call AudioUnitGetProperty?
Clumps (names, etc), like general info on parameters, are really a
scope property.
If you are defining parameters on part scopes, then each element in
the part scope will share the same parameters types, etc (just
different values of course for each element) - think of input volumes
on a mixer... For the way these parameters are clumped, the same
applies - the clumping is defined on the scope (so just as with param
info, the element is ignored), and the host will query the different
scopes for their parameters and clumps.
Does that make sense?
Bill
Thanks!
Philippe Wicker
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