Re: AUValidation
Re: AUValidation
- Subject: Re: AUValidation
- From: Urs Heckmann <email@hidden>
- Date: Tue, 30 Dec 2003 15:50:43 +0100
Am 30.12.2003 um 12:04 schrieb stiwi kirch:
TESTING OPEN TIMES:
COLD:
time to open AudioUnit: 559.750ms
Bus error
whoops! Bus error? I am stuck with this error message! Am i missing
something?
The Bus error comes up when AUValidation crashes by BuzZer. (Took me a
while to realize that this doesn't crash the shell, just the app that
was launched by it)
Obviously, it crashes before testing the WARM opening. I suppose it
closes the component without initializing/deinitializing it. You gotta
take care of things like:
- even an unititialized AU can receive Parameter stuff and has to
expose properties.
- during Initialize, no parameter values must be changed
- unlike most hosts AUV checks that AUs have to deal with some incoming
NULL data structures upon which they just return noErr, to tell the
host that a certain method/property is implemented
The only meaningful design I can think of is setting up all stuff
during construction time, in PostConstructor (or ctor, but
PostConstructor looks like the more secure place). Initialize is more
like something that can be used to aquire some ram or stuff which
depends on properties.
I think it's useful to be aware of the AU lifetime, which is not always
obvious, while AUV gives them the hardest treatment, like checking if
forbidden stuff is possible...
Cheers,
;) Urs
urs heckmann
email@hidden
www.u-he-com
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