# https://alsa.opensrc.org/Jack_and_Loopback_device_as_Alsa-to-Jack_bridge
# * ALSA playback = subdevice 0,0 
# * ALSA capture  = subdevice 0,1  
# * Jack readable client (cloop) = subdevice 1,0  
# * Jack writable client (ploop) = subdevice 1,1

# playback 
pcm.amix {
    type dmix
    ipc_key 219345
    slave.pcm "hw:Loopback,0,0"
}

# capture
pcm.asnoop {
    type dsnoop
    ipc_key 219346
    slave.pcm "hw:Loopback,0,0"
}

# duplex device to combine the above
pcm.aduplex {
    type asym
    playback.pcm "amix"
    capture.pcm "asnoop"
}

# jack devices
pcm.ploop {
    type plug
    slave.pcm "hw:Loopback,1,1"
}

pcm.cloop {
    type dsnoop
    ipc_key 219348
    slave.pcm "hw:Loopback,1,0"
}

# default device
pcm.!default {
    type plug
    slave.pcm "aduplex"
}