[linux-audio-dev] Todays changes to "LADSPA2" strawman

[Dave Robillard]

On Sat, 2006-04-29 at 17:24 +0200, Lars Luthman wrote:
> On Sat, 2006-04-29 at 15:09 +0100, Chris Cannam wrote:
> > This format is really going to have to aim to grow into something that 
> > can replace DSSI as well.  And while that could be great, it's a much 
> > more snaggly business -- DSSI has turned out pretty complicated, for 
> > some very sound reasons, and that has already helped it to be less 
> > popular than we'd hoped.  If it was obvious that we could simplify it a 
> > lot the "LADSPA2" way, that would be great, but I don't see at first 
> > glance that it is.
> 
> With the port types specified in the RDF file, MIDI input should be
> doable with explicit LADSPA2 ports of some defined MIDI type, which
> means that we wouldn't need the run_synth() callback. The GUI
> specification and the OSC protocol is already pretty much applicable to
> LADSPA as well as DSSI, so that should work in LADSPA2 too. New
> additions like MIDI output and transport info could also be done as port
> types.
> 
> The things that aren't obvious how to do are 
> 
>  1) the configure() callback

OSC message.

>  2) the dynamic program lists and midi mappings (static definitions   
>     could be written in the RDF file, but that's no fun)

That's a tougher one.

>  3) program selection

OSC message.

>  4) the run_multiple*() callbacks (how many plugins use these?)

Silly useless function.  Toss it on the trash heap with run_adding.

-DR-