On Tue, Mar 18, 2003 at 12:04:46PM +0100, Francois Dechelle wrote: > On Tue, 2003-03-18 at 10:36, Steve Harris wrote: > > > Thats OK as a quick fix, but it doesn't solve the broader problem, if you > > save state from a host using jMax LADSPA plugins then it wont necceserily > > be the same set when you reload. > > > > I think LADSPA needs self assigned ID's, if the UID space were bigger we > > could just reseve the top bit for self assigned stuff and hash unique > > strings to fill it, but as its only 32bits thats not enough space. > > > > > Apart from this solution, I don't see how to do it. > > > > Agreed, without a change to LADSPA I dont think its possible. > > > > One solution could be to use a reserved ID range to flag that the ID isn't > > globally unique, but the label string (not name) is, so hosts should save > > state aginst the label not the ID. It has very dodgy semantics though. > > > > A better solution would be to expand the ID space to 64bits, and reserve > > the top bit's worth, which is plenty, but will break binary compatibility > > of course. > > In any case, hosts that save the ID cannot restore the plugin settings > correctly, if the ID is assigned dynamically. > > Currently, in the jMax LADSPA plugin, the label is the basename of the > patch file. This is clearly unique. > > What is the usual strategy for LADSPA hosts that save their state? Do > they store only the ID or also the label?
galan saves against the label. I wanted to change this to the UID after thinking the label was not unique. But if i get this right the label is unique. And then i will leave it like it is. > > Also, does the UID really need to be unique? If not, one UID for jMax > could be enough. Different plugins will differ by their label. > > > > > > > Another question: is there a plan to get plugin port values that are not > > > floats? More precisely, I am thinking of transforming a patch that does > > > granular synthesis into a plugin. But this patch needs a sound file > > > name. How can I pass it to the LADSPA plugin? > > > > You can't. I think this is thought to be outside the remit of LADSPA. > > Too bad. Is there any trick to twist LADSPA plugins for that? you could stream it into an audio input... but this is really ugly... i would write a string event to audio converter if you used this approach. -- torben Hohn http://galan.sourceforge.net -- The graphical Audio language