Subject: Re: [linux-audio-dev] changing control port values with LADSPA: a serious issue?
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Mon Mar 25 2002 - 16:06:15 EET
On Mon, Mar 25, 2002 at 02:09:20 +0100, Stefan Kost wrote:
> Additionally it introduces processing overhead, as parameters usually don't change that much.
Agreed, there are definatly some parameters that can't/shouldn't be
interpolated.
> Ideas :
> 1.) What about if the host takes care about avoiding cracks due to parameter changes. Right after a parameter change,
> it could call the plugin twice and then x-fade the outputs.
Not all plugins can be xfaded to produce meaningful results, not to
mention it doubles the cpu use, and you need two instances of the plugin,
with the same state.
The host can't reasonably do the parameter edge filtering, as it doesn't
know what the appropriate scheme is. Sure, you could code up all the
common schemes (and thier parameters) and express them as port metadata,
but that seems uneccesarily complicated.
- Steve
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