At Thu, 05 Feb 2004 00:08:18 +0100, Joern Nettingsmeier wrote:
[crossposted to alsa-devel and jackit-devel]
hi *!
i'd like to use the rear outs of my sblive platinum with jack.
the following works:
# aplay some.wav -Dfront &
# aplay someother.wav -Drear
both signals end up at my mixer as expected, so it seems the devices are independent.
front is hw:0,0 which is a duplex device. rear is hw:0,3 and is playback only.
hmm? hw:0,3 isn't for the rear output...
there is already a standard definition for 4.0 output, "surround40". so, something like below would be better:
ctl.jtest { type hw card 0 }
pcm.jtest { type asym playback.pcm { # route for mmap workaround type route slave.pcm surround40 ttable.0.0 1 ttable.1.1 1 ttable.2.2 1 ttable.3.3 1 } capture.pcm { # 2 channels only type hw card 0 } }
and run jack with -d jtest -i 2 -o 6 options.
you probably meant "-o 4", right?
works like a charm so far, many thanks! jackd spits out a warning, though:
ALSA lib pcm.c:1168:(snd_pcm_link) SNDRV_PCM_IOCTL_LINK failed: Operation already in progress
i'll play with it for a while, and then i'll send it to patrick for inclusion in the alsa docs...
time to play :-D
jörn
-- "I never use EQ, never, never, never. I previously used to use mic positioning but I've even given up on that too." - Jezar on http://www.audiomelody.com
Jörn Nettingsmeier Kurfürstenstr 49, 45138 Essen, Germany http://spunk.dnsalias.org (my server) http://www.linuxaudiodev.org (Linux Audio Developers)
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