Apple

Hi,

While working on an AU plug-in,

I am trying to notify the AU host (Logic) that a certain parameter scale has changed from continuous to discrete.

Still, this appears not to work.

What I see is that the automation lane remains in a continuous scale even though the plug-in reports a new discrete scale.

Here’s the update notification request:

AudioUnitParameter changedUnit;

changedUnit.mAudioUnit = GetComponentInstance();

changedUnit.mParameterID = kAUParameterListener_AnyParameter;

AUParameterListenerNotify (0, 0, &changedUnit);

When the AU host asks about the updated parameter info, I state it’s a discrete parameter by setting

AudioUnitParameterInfo outParamInf.unit = kAudioUnitParameterUnit_Indexed;

And

outParamInf.maxValue = inContInf.toggleStates - 1;

What could be missing?

Thanks,

Isaac