[LAD] Lv2 port replication [for dummies]

[David Robillard]

On Thu, 2009-08-13 at 19:48 -0400, David Robillard wrote:
> On Thu, 2009-08-13 at 21:27 +0100, Steve Harris wrote:
> > On 13 Aug 2009, at 20:01, David Robillard wrote:
> > >> I'm assuming the only ports to be replicated are those which have  
> > >> say a
> > >> multiPort property. I don't see why replication would not be the same
> > >> in a plugin instance, across all ports with that property.
> > >
> > > Because larger plugins can have several completely different signal
> > > paths.  Synthesis and effects, or several channels on a mixer, or...
> > 
> > That, IMHO, is a different problem space.
[...]
> > Several channels on a mixer should be doable with the 1/N channels  
> > restriction.
> 
> A mixer usually has several 'strips', each of which may have different
> counts.  Like the ardour mixer, for example.  This is a simple,
> realistic, and useful case where simply having a single global value
> doesn't cut it.  The same goes for virtually anything with several
> signal paths.

Also, as far as I can tell there is only one existing audio plugin spec
that can do anything like this: AU.  Tellingly, it's done on a per
"bus" (aka group) basis there as well.

-dr