[LV2] port-groups

[Alex Norman]

just tickling this subject again.. are port groups really used?

do the plugins using the format: [pg:roll pg:leftChannel], for example, swh:
https://github.com/swh/lv2/blob/5098e09e255eaed14e0d40ca5e7e6dfcb782d7ea/plugins/matrix_st_ms-swh.lv2/plugin.xml

actually comply with http://lv2plug.in/ns/ext/port-groups/ ?

On  0, Alex Norman <alex at x37v.info> wrote:
> I'm working on a libpd lv2 wrapper and I'm curious about getting port-group
> support working.
> 
> I first saw this documentation:
> http://ll-plugins.nongnu.org/lv2/ext/portgroups/
> 
> but it seems to conflict somewhat with this:
> http://lv2plug.in/ns/ext/port-groups/
> 
> in the lv2plug.in docs I see no mention of pg:membership, pg:rightChannel,
> pg:leftChannel etc.
> 
> I'm wondering if I'm missing something or if the ll-plugins docs are just out of
> date? I have a few lv2 plugins installed and I've seen both pg:right and
> pg:rightChannel being used, I've also seen:
> pg:membership [ pg:role pg:LeftChannel] vs. lv2:designation pg:left
> 
> Finally, is there a host that _really_ illuminates the usefulness of port
> groups? They seem like they could be useful but I'm not exactly sure if/when a
> host is using them so I'm not exactly sure how to test that my annotation is
> correct.
> 
> Thanks,
> Alex
> 
> work in progress: https://github.com/x37v/pdlv2 
> 



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