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Re: AUListenerAddParameter

We normally do not use NULL for the object param - that's probably the problem. Try specifying self (obj-c), or this (c++)

Bill

On 15/06/2006, at 3:17 PM, Richard Burnett wrote:

Hmmm.  Here is some of the code I use:

enum {
	kParam_One          = 0,
	kLfo1RateParam      = 1,
	kNumberOfParameters = 2
};

AudioUnitParameter parameter[] = { { 0, kParam_One, kAudioUnitScope_Global, 0 },
{ 0, kLfo1RateParam, kAudioUnitScope_Global, 0 } };

int i;
for (i = 0; i < kNumberOfParameters; ++i) {
parameter[i].mAudioUnit = mAU;

NSAssert ( AUListenerAddParameter (mParameterListener, NULL, &parameter[i]) == noErr,
@"[CocoaView _addListeners] AUListenerAddParameter()");
}


So the second element of the AudioUnitParameter should be unique, right?

Strange...

Rick

Its probably rejecting the second one because you're adding an
identical entry? An unique identity is formed by:
Listener
"Object" (this is the object arg to the listener APIs)
ParamInfo - AU, Scope, Element, ParamID

Bill

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References: 
 >AUListenerAddParameter (From: Richard Burnett <email@hidden>)
 >Re: AUListenerAddParameter (From: William Stewart <email@hidden>)
 >Re: AUListenerAddParameter (From: Richard Burnett <email@hidden>)



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