I encountered this a while back and modified my copy of Ambdec 0.5.1 to register its inputs with jack in FuMa order rather than ACN, specifically to get the mplayer-jack-ambdec chain to work as expected (which I suspect is one of the more common use cases). Ambdec's functioning is completely unaffected by this, unless of course, you're depending on seeing Ambdec's inputs in ACN order in jack. Here's patch file against the current sources:
http://www.ai.sri.com/ajh/ambisonics/ambdec-jack-fuma-order.patch Aaron On Fri, Nov 15, 2013 at 3:10 PM, Andy Furniss <adf.li...@gmail.com> wrote: > Marc Lavallée wrote: > >> >> In my experience, the order of channels in jack are stable enough to >> use this simple channels remapping trick: >> >> mplayer -channels 4 -af channels=4:4:0:0:1:3:2:1:3:2 -ao >> jack:port=ambdec AJH_eight-positions.amb >> > > FWIW, while looking at mplayer code it occured to me that - > > 1. My suggestion in my last post to make mplayer sort by name is silly > and would be wrong for higher orders where channel number matters (I > can't reply to my own post because of the stupid way gmail works). > > 2. Rather than taking time to extend mplayer to take input names, though > useful, I could just use qjackctl patch bay. With that I can set up > connections how I want and handle all the variety of higher orders > (though I did notice an 8 channel limit in the mplayer code - easily > changed). > > So if I did need to use mplayer for many different types of .amb I would > just set up different mappings in patchbay, load my settings on starting > jack and then with recent (older doesn't have noconnect) mplayer do > something like - > > mplayer -channels 4 -ao jack:name=MP4:noconnect some-bformat.amb > > mplayer -channels 7 -ao jack:name=MP7:noconnect some-3rdhoriz.amb > > etc. MP4 and MP7 being names used in my patchbay config the right > connections will be made when mplayer starts. > > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20131116/76969c53/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
