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This is the JackOnAllDevices project, JOAD for short.
The purpose is to scan for all ALSA / asound audio devices, and hook them
all up to JACK. Then it starts up JACK, and hooks up any joysticks it
finds as MIDI controllers. So any ALSA application gets routed through
JACK.
This is very rough for now, only just started writing it. jackoffall is
particularly crude and violent, lots of killall.
Since it isn't a package yet, some setup is needed.
The packages you need installed are -
luajit
jackd2
jack-tools for jack-plumbing, but other patch persistance methods could be used.
a2jmidid
zita-ajbridge
aseqjoy
qjackctl can be used as a visual patchbay, though I prefer catia from the KXStudio repos.
You need to have the snd-aloop kernel module loaded. The jackscanall
script should be run at boot time, put it into /etc/boot.d/. jackonall
should be called on user login. Probably don't need to run jackoffall on
user logout.
Alas ~/.asoundrc doesn't understand ~ or $HOME, or even "try the current
directory" it seems. So you have to hard code the path. Make sure your
~/.asoundrc includes something like this (an example is included) -
</var/lib/JOAD/asoundrc>
jackscanall scans for your sound devices and creates
/var/lib/JOAD/asoundrc. Run jackscanall once as root to create that
file, and each time you need to change your devices.
jackonall starts up JACK and friends, and creates JACK devices for all
the things jackscanall found. It creates the cloop and ploop devices
that catch everything ALSA does. Then creates MIDI devices for all your
joysticks.
jackoffall closes down everything jackonall started up.
NOTE - Seems both ALSA and JACK are per user. So you need to run
jackonall and jackoffall for each user.
TODO - Leave it running, and hotplug ALSA / asound audio devices.
a2jmidid takes care of hotplugging MIDI devices.
Though I think I still need to deal with hotplugged joysticks.
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