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Re: One Cocoa view for multiple AUs?
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Re: One Cocoa view for multiple AUs?


  • Subject: Re: One Cocoa view for multiple AUs?
  • From: ipmlists <email@hidden>
  • Date: Mon, 9 Nov 2009 21:45:56 +0000

Hello again,

2009/11/7 Brian Willoughby <email@hidden>:
> I believe that what you will have to do is make a map at run time from the
> parameters of each of the embedded AUs, and then fold them into your wrapper
> AU.
>
><snip>
>
> Once you have the map, your wrapper AU would report the combined list of
> parameters as its own.  Then you need to rewrite the parameter functions to
> detect whether a given parameter change is local or intended for an embedded
> AU, passing the parameter change on when necessary.

Ok, this is where I'm having problems: there's no way (is there?) to
override AUParameterSet or AudioUnitSetParameter, so how can the
wrapper AU intercept param change requests coming from the view?

> In addition, your wrapper AU will have to register for changes to parameters
> in the embedded AUs, and handle changes which come from the AUs by passing
> them on to the UI.

I think this means creating a listener in the AU itself, doesn't it?
Would that need to be on its own thread to avoid problems with the RT
thread?

thanks again,

Iain
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 >Re: One Cocoa view for multiple AUs? (From: Brian Willoughby <email@hidden>)

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