On 04/03/2012 07:57 AM, michael noble wrote:
> Since the unofficial wiki seems to have disappeared, the documentation
> of the "Jack and Loopback device as Alsa-to-Jack bridge" has gone with
> it. Neither google cache nor the wayback machine fare able to serve a
> copy of the page. There are plenty of references to the wiki page on
> the web, but no-one seems to have mirrored the page. Does anyone
> happen to have a copy of the documentation lying around?
>
> Michael
Not a copy of the whole article, but the essentials - here using zita-aj
instead of for alsa_in/out
-------------------~/.asoundrc----------------------
# playback PCM device: using loopback subdevice 0,0
pcm.amix {
type dmix
ipc_key 219345
slave.pcm "hw:Loopback,0,0"
}
# capture PCM device: using loopback subdevice 0,1
pcm.asnoop {
type dsnoop
ipc_key 219346
slave.pcm "hw:Loopback,0,1"
}
# duplex device combining above PCM devices
pcm.aduplex {
type asym
playback.pcm "amix"
capture.pcm "asnoop"
}
# ------------------------------------------------------
# default device
pcm.!default {
type plug
slave.pcm "aduplex"
}
## use with
## modprobe snd-aloop pcm_substreams=2
## jackd ...
#
# zita-a2j -L -d hw:Loopback,1,0 -j cloop -n 3 -p 256 &>/dev/null &
# zita-j2a -L -d hw:Loopback,1,1 -j ploop -n 3 -p 256 &>/dev/null &
# sleep .5
## cloop -> jack output ports
# jack_connect cloop:capture_1 system:playback_1 &>/dev/null
# jack_connect cloop:capture_2 system:playback_2 &>/dev/null
#
## jack input ports -> ploop
# jack_connect system:capture_1 ploop:playback_1 &>/dev/null
# jack_connect system:capture_2 ploop:playback_2 &>/dev/null
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