Question on clumps
Question on clumps
- Subject: Question on clumps
- From: Bill Stewart <email@hidden>
- Date: Thu, 31 Jul 2003 23:33:11 -0700
From: Bill Stewart <email@hidden>
Date: Thu Jul 31, 2003 10:28:36 PM US/Pacific
To: email@hidden
Subject: Question on Clumps
This might be me being lazy :)
I'm looking at the code for our generic UI which now supports clumps.
Its very simple and straight forward to "reserve" the clumpID of zero
to capture those parameters that are not clumped
The logic looks something like this:
UInt32 clumpID = 0;
param.GetClump (clumpID); //no clump, clumpID is left unchanged
map[clumpID].push_back (param);
This deals quite effectively with parameters that aren't clumped at
all, and deals with mixtures of clumped and non-clumped parameters if
none of these clump ID's are zero. If there is a mixture of non-clumped
and clumpID==0, then you'd get these all clumped together... which is
probably not what you want.
So, given that the above is simple logic, I imagined that others would
appreciate being able to deal with this so simply as well, so I'd
propose reserving zero as a value that shouldn't be used by individual
AU's
enum {
kAudioUnitClumpID_System = 0
};
Thus, if you have a mixture of clumped parameters and non-clumped
parameters, then the non-clumped parameters will be treated as if they
are clumped into a clump where the ID is zero.
Does that make sense? Seems like a nice thing to do for us lazy host
writers? Is this going to cause any problems for people?
In fact, if we reserve the clumpID==0 for "system" use, then AU's that
don't provide explicit clumps, could still provide a name for all of
their parameters that aren't clumped (for the GetClumpName property) by
just providing support for this system clump
Bill
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