Subject: Re: LADPA (was Re: [linux-audio-dev] emagic (logic) drops VST support under OS X)
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Fri Sep 06 2002 - 14:37:10 EEST
On Fri, Sep 06, 2002 at 12:54:28 +0200, Tim Goetze wrote:
> Steve Harris wrote:
>
> >OK, heres a graph of how I think a simple plugins via jack session could
> >look: http://www.ecs.soton.ac.uk/~swh/jack-plugin-graph.png
>
> nice. where's the sequencer, and how does it connect? :)
Using the phatom timebase API ;) I wanted to keep the diagram as simple as
possible to cover the state issues.
> [store procedure]
>
> >To restore, you just unstar to the state tarball, jackd launches the apps,
> >passing in thier state directory, and they each launch thier subgraphs.
> >
> >Obviously this recurses, if for eg you have P5 that has a subgraph of its
> >own. And the same mechanism can be used to save the state of a single apps
> >plugin graph.
>
> still requires a lot of logic in the clients -- they need to store
> a plugin identifier that enables them to instantiate the correct
> plugin at restore. it would be very nice if as much of this logic
> as possible went into (jackd) which -- if the clients are .so --
> can then do the complete store/restore (if possible).
Well, libjack could provide a graph dumping call, and you cna find the
plugin by looking in /proc if you know the PID ;)
- Steve
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