[music-dsp] What if I want one VST plugin to control another?

[David Olofson]

On Saturday 27 October 2007, Jeff Brown wrote:
> Hi,
> 
> I would like to write (or preferably, build in
> Reaktor) a VST plugin that decides whether another
> plugin is on or off.  It seems like my host program is
> what will determine whether that's possible.  Right
> now I use Live, which isn't very flexible: it will let
> me route whole MIDI signals (note on/off, volume,
> pitchbend etc. all bundled together) from one plugin
> to another, but not to target individual parameters in
> the receiving plugin.  Am I out of luck?  Is there
> another VST host that would let me do this?

Not sure how well behaved VST is in this regard, or if this covers the 
use cases you have in mind, but one way around might be to have your 
plugin wrap (ie host internally) the plugin(s) you want to control. 
That way, you relay all communications between the host and the 
wrapped plugin, allowing you to modify, redirect, discard or add 
information as needed.

Could be quite some work, although there might be some shortcuts if 
all you want is to "transparently" wrap one single plugin.


//David Olofson - Programmer, Composer, Open Source Advocate

.-------  http://olofson.net - Games, SDL examples  -------.
|        http://zeespace.net - 2.5D rendering engine       |
|       http://audiality.org - Music/audio engine          |
|     http://eel.olofson.net - Real time scripting         |
'--  http://www.reologica.se - Rheology instrumentation  --'