Re: Side-chain detection
Re: Side-chain detection
- Subject: Re: Side-chain detection
- From: Stefan Gretscher <email@hidden>
- Date: Tue, 22 Nov 2005 21:03:31 +0100
Hi Michael,
Am 22.11.2005 um 08:56 schrieb john smith:
what can I do to check if a second input bus has been activated(*)?
Bill described this in a posting named "Bus Count and Usage" dated Nov
8th, following up the discussion about the matter.
I'm trying to detect whether the host is using a potential second
input bus in my plug-ins. I tried GetInput(1), assuming it would
return 0 if no such second bus was present, but it crashes the plug-in
(or, if in the compiler, hangs).
By the description of your crash I'd guess that the second input bus
has not yet been created when you're trying to access it, which could
have 2 reasons:
a) you're using a writable input bus count and it's still set to 1
solution: I'd assume that your AU can't handle more than 2 input
busses, so you shouldn't have a writable input bus count in first place
- use a fixed input bus count of 2 instead.
b) you're trying to access the elements before they have actually been
created by CreateElements().
solution: place the check at some later point, after the elements have
been created (done in the PostConstructor () of AUBase), or call
CreateElements() earlier if you need to do this in your c'tor, like
done in the SDK examples.
It should probably be noted that I'd prefer to do this check in
Initialize() (if possible).
Once your elements have been created properly, then GetInput() will
return an element that you can query for its connection via IsActive().
This can be done in your implementation of Initialize().
Best,
Stefan
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