On Sat, Jul 27, 2019 at 05:26:30PM -0600, Samuel Larkin wrote: > > >Synopsis: Sndiod failds with >16 audio channels > >Category: system > >Environment: > System : OpenBSD 6.5 > Details : OpenBSD 6.5-current (GENERIC.MP) #148: Sat Jul 27 > 10:00:49 MDT 2019 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > Architecture: OpenBSD.amd64 > Machine : amd64 > >Description: > I am using a Focusrite Scarlett 18i8 2nd Gen, which has 18 input > audio channels. When I run 'sndiod -ddd -f rsnd/1' I get the output > > snd0 pst=cfg.default: rec=0:1 play=0:1 vol=23170 dup > helper(helper|ini): created > worker(worker|ini): created > listen(/tmp/sndio/sock0|ini): created > sock(sock|ini): created > helper: recv: cmd = 0, num = 0, mode = 3, fd = -1 > helper: send: cmd = 3, num = 0, mode = 0, fd = 3 > sock,rmsg,widl: AUTH message > sock,rmsg,widl: HELLO message > sock,rmsg,widl: hello from <firefox>, mode = 1, ver 7 > snd0 pst=cfg: device requested > worker: send: cmd = 0, num = 0, mode = 3, fd = -1 > worker: recv: cmd = 3, num = 0, mode = 0, fd = 6 > rsnd/1: 18: unsupported number of rec channels > snd0 pst=cfg: rsnd/1: failed to open audio device > sock,rmsg,widl: closing > sock(sock|zom): destroyed > worker(worker|zom): destroyed > listen(/tmp/sndio/sock0|zom): destroyed > snd0 pst=cfg: draining > nothing to do... > snd0 pst=cfg: deleting > helper: hup > helper(helper|zom): destroyed > nothing to do... > > Note the line 'rsnd/1: 18: unsupported number of rec channels' > > I can see that in /src/usr.bin/sndiod/defs.h that 'NCHAN_MAX' is set to > 16. > Is this something that can easily be set higher? > > >How-To-Repeat: > run 'sndiod -f rsnd/1' with rsnd/1 having more than 16 audio channels > >Fix: > It could be as easy as setting NCHAN_MAX higher but I am not familiar > with sndio so I don't know if that will work
Yes that should work. I'll look at this. Meanwhile, you could crank sndiod and aucat's NCHAN_MAX to 64. They are defined in src/usr.bin/sndiod/defs.h and src/usr.bin/aucat/defs.h respectively. I'm very curious to know how the uaudio driver handles this device, it's the first time someone tries a device with that many channels on OpenBSD. Until now the record was held by the 12-channel Delta-1010.
