On Wed, Mar 23, 2016 at 11:25:01PM -0700, Aaron Heller wrote: > Note that while AmbDec can accommodate FuMa normalization on input, it > still makes the connections to jack in ACN order so the inputs will often > appear in Jack in ACN order (and never in FuMa order).
More precisely, the jack ports are _created_ in ACN order. Simply because all the internal data structures use this order. > I say "often" > because the Jack API does not have any notion of the 'order' of an > application's ports. Correct. In many cases jack will list ports in the order they were created, but you can't count on it. In a system were apps and ports come and go, they will be mixed up sooner or later. It happens all the time in e.g. Ardour's connection matrices. > To make matters worse, some jack control clients, > like qjackctl, sort the ports by name, Given that there is no defined order, that's the only sensible thing they can do. > so they appear in the GUI in FuMa > order, but if you simply do a 'bulk connect' you'll find the individual > connections were made in ACN order. You really have to check the port > names carefully when connecting. The problem here is that while qjackctl displays a sorted list, it uses the original order when doing a 'bulk connect'. What it should do of course is to try and match the names. The FuMa style input port names in Ambdec were chosen to be convenient to a human user making the connections, and to show up in qjackctl in FuMa order (that's why the degree is part of the name). At the time the FuMa names were more are less the standard. Since then I've written a lot of (unreleased) jack apps having HOA ports. They all use a naming scheme based on ACN: in 'printf' style "xxxx.%d" where d is the ACN. Future releases of Ambdec will do the same (with an option to have FuMa names) since Ambdec is really the only exception to that scheme. That way tools like qjackctl *could* at least do the right thing. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
