[linux-audio-dev] LADSPA_Descriptor.ImplementationData usage?

[Steve Harris]

On Tue, Apr 25, 2006 at 06:01:18PM -0400, Dave Robillard wrote:
> On Tue, 2006-04-25 at 22:47 +0100, Steve Harris wrote:
> > I'm in a cruft killing mood.
> > 
> > Has anyone ever used ImplementationData? I know I haven't, and I goggled
> > for it, but all I found was the ladspa.h file, which has a comment to the
> > affect of: we're not sure why you'd need this, but, just incase here's a
> > void *.
> > 
> > If anoyone has used it, or has a potential use for it, it should stay, but
> > otherwise it should go IMHO.
> 
> I was just thinking this while going through the header (cleaned it up a
> bit).  I don't even really understand what it's purpose is to be honest,
> never have.
> 
> What does it allow that would not be possible if it weren't there?

Well, it somewhere to stash "class" level information, but I just use
statics (easier) and/or shm (harder, but cross host) for that.

It would be a bit tricky to use as you'd have to be really sure that the
host was only going to request one descriptor, otherwise you'd have
multiple copies of your "class" data, which could be either wasteful or
dangerous.

- Steve