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Re: Component from ComponentInstance?
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Re: Component from ComponentInstance?


  • Subject: Re: Component from ComponentInstance?
  • From: William Stewart <email@hidden>
  • Date: Wed, 26 May 2004 18:28:08 -0700

On 26/05/2004, at 3:43 PM, kelly jacklin wrote:

> On May 26, 2004, at 12:55 PM, m wrote:
>
>> I had considered that, in fact my list already contains the
>> Components and they're descriptions. I'm concerned that perhaps
>> ComponentDescriptions aren't guaranteed to be unique from Component
>> to Component. For intstance, the user may have two versions of an AU
>> installed, and the AU vendor might not have been as scrupulous as one
>> might like in updating the version flags. Perhaps I'm worrying about
>> this too much, but NI used to be fairly cavalier about the 'vers'
>> resource in the past.
>
> If two AUs have the same ComponentDescription, then already there will
> be problems, given that the AUGraph interface for creating an
> AudioUnit into a graph takes a ComponentDescription as the parameter
> to find and instantiate the AudioUnit.

You can't have that... The Component Manager will only load *one*
component for a given description based on the version resource - it
always loads the one it finds with the highest version.

Bill

>
> I wouldn't worry about it, if I were you. This seems like a pretty
> pathological edge case to me, and one that you would really have no
> measure to guard against (or to deal with, if you were using the
> AUGraph API).
>
> kelly
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  • Follow-Ups:
    • Re: Component from ComponentInstance?
      • From: kelly jacklin <email@hidden>
References: 
 >Re: Component from ComponentInstance? (From: Greg Chapman <email@hidden>)
 >Re: Component from ComponentInstance? (From: m <email@hidden>)
 >Re: Component from ComponentInstance? (From: kelly jacklin <email@hidden>)
 >Re: Component from ComponentInstance? (From: m <email@hidden>)
 >Re: Component from ComponentInstance? (From: kelly jacklin <email@hidden>)

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