[PD] Pd's jack outputs are numbered from zero onwards?

[Peter P.]

* IOhannes m zmölnig <zmoelnig at iem.at> [2020-12-18 21:16]:
> On 12/18/20 9:06 PM, Peter P. wrote:
> > * IOhannes m zmölnig <zmoelnig at iem.at> [2020-12-18 20:52]:
> > > On 12/18/20 8:40 PM, Peter P. wrote:
> > > > Hi list,
> > > > 
> > > > just discovered that Pd's jack audio ouput ports are numbered from zero
> > > > onwards. Is this very intentional?
> > > 
> > > it's been on my todo-list for ages to fix this.
> > Great, good to hear! Thanks IO!
> 
> while fixing the issue is trivial, i wonder what's the best way to proceed.
> simply changing the port-names from "input0" to "input1" will probably break
> all existing auto connection-setups (e.g. qjackctl patchbays).
> 
> currently they will do something like:
>  "puredata:output1 -> system:capture_0"
> 
> if we just renumber the ports, this will *certainly* introduce off-by-one
> errors (e.g. have movie dialoge come out of the sub woofer).
> 
> so we probably should name the ports slightly different, so that "output0"
> becomes "output_1".
Elegantly circumnavigating the above issue I find.
 
> (the ALSA backend of jack uses underscores as a separator; but Ardour
> (somewhat canonical) uses spaces - though i'd rather avoid that)
I'd recommend underscores as they are easier to put as command line
flags for eg. jack_capture or jack_connect.

cheersz, P