Re: Newbie AU questions (AU types and subtypes)
Re: Newbie AU questions (AU types and subtypes)
- Subject: Re: Newbie AU questions (AU types and subtypes)
- From: Brian Willoughby <email@hidden>
- Date: Wed, 18 Sep 2002 12:00:53 -0700
[ >> We would really like to maintain a list of sub-types that implementors of
[ >> specific types of dsp would conform to.
[ >>
[ >> For instance, a reverb effect could be identified by the
[ >> kAudioUnitType_Effect and the kAudioUnitSubtype_Reverb
[ >>
[ >> Then - different manufacturers provide different implementations of this
[ >> that in many cases would report similar parameters, etc...
[ >
[ >
[ > As B.J. Buchalter said, that either limits each manufacturer to one
[ > effect of each type, or the subtype field will quickly stray away from
[ > Apple's list of subtypes and be of no use for sorting effects by their
[ > type.
[
[ Yes - and I think we'll have to abandon this idea, as the subtypes
[ are really the only field that any company (including us) can use
[ for multiple units.
[
[ So - my guess is that subtype can't realistically be used in this
[ way
What about Paul's suggestion to use three characters of the subtype to
indicate the standard categories? This could be refined to specify that
subtypes starting with three lower case characters are reserved by Apple to
indicate the generic categories, and then each manufacturer could create more
than one variation for each standard effect. subtypes with an upper case
character in any of the first three digits would indicate an AU which is not
conforming.
A variation could be to only reserve the first two characters for the
category, but I don't see how a given manufacturer would have more than 26+26+?
effects in any one category...
Brian Willoughby
Sound Consulting
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