[PD] Jack and PD plus another question

[guenter geiger]

On Sun, 25 Jan 2004, Larry Troxler wrote:

> On Sunday 25 January 2004 17:11, thewade wrote:
> > I dont know much about pd and jack, but I was told that if you run jackd as
> > root then you have to run pd as root as well, and same for non-root, but it
> > seems redundant to run pd in realtime and jack in realtime. if pd is
> > connected tojack and jack is running in realtime, then shouldnt pd be
> > inrealtime as well?
> >
>
> If I understand correctly, PD is not a textbook Jack application - it doesn't
> simply register a callback function that Jack can call. Instead, it has its
> own main loop that processes the audio stuff, and that's why it needs to run
> RT.  I suppose that there is a Jack callback, but maybe it only copies
> buffers from PD to Jack (or something like that). Hopefully Miller or someone
> else will correct me if I'm off base on this.

No, you are right. There was no reliable way to put pd into the jack
callback directly, because of the problems with graphics updates,
soundfile and patch loading.

Guenter