>1- GUI programming, and interface/audio syncronization. As well as I can >Is it accepted to lock in cases where a destructive operation is being >performed?
As far as I am concerned it is never acceptable for a regular thread to lock an rt thread for exactly the reason you mention: priority inversion deadlock. You forgot to mention one other method for achieving this communication; System V ipc messages, which i prefer because they don't lock (if used right) and they are simple. See the man pages for msgget, msgsnd, msgrcv. >3-Host instruments. I remember some discussion on XAP a while ago,... I think that LADSPA plugins can be used as softsynths to good effect. LADSPA hint # 0x2C0 (LADSPA_HINT_DEFAULT_440) allows for a plugin to be pitch controlled. This is not as fancy as other plugin api's but it works and I think we will see more and more use of it. Using a LADSPA plugin as a softsynth requires a decent amount of work on the part of the host: each LADSPA plugin instance is only one voice and polyphony must be handled by the host. However, there are now hosts out there that have the framework to handle this. >4-Interface abstraction for plugins.: We all know how our lovely X11.. >Steve Harris proposed the use of (rdf was it?), Steve Harris' lib-rdf is available: http://plugin.org.uk//lrdf/ but i have not used it and can not say anything useful about it. It is used by ardour though. -jacob robbins.....
