5 Feb
2003
5 Feb
'03
2:41 p.m.
Quick (?) LCP question:
how closely is it tied to LADSPA?
not really tied to LADSPA at all.
Does it only support LADSPA float ports? (I guess it
would.)
yes.
I downloaded the tarball, but there's no docs and
few comments
so I can only guess how it's intended to work... looks like
there's a central LCP server that clients interact with?
not really a central LCP server. a given LADSPA host app becomes an
LCP server. it has to fork/exec the clients, telling them (1) who it
is and (2) the ID of the plugin, which they will include in messages
back to the host.
I'm wondering if LCP would be at all useful for
this. I'd have to write
an LCP "driver" for Sfront. Fortunately, sfront makes it pretty easy
to write new Audio and Control "drivers". Witness the fact that
even a dummy-level C programmer like myself can write a mostly-working
JACK "driver".
its pretty simple. have a look at the examples in c.c and s.c (client
and server, respectively). you just arrange to call the relevant LCP
client handler whenever there appears to be I/O on the relevant file
descriptor, and call the write function to send new values to the plugin.
--p