Pipewire channels configuration

51-alsa-multichannelAudioInterface.lua

-- /etc/wireplumber/main.lua.d/51-alsa-multichannelAudioInterface.lua

rule = {
  matches = {
    {
      { "node.name", "matches", "alsa_input.usb-Generic_USB_Audio-00.HiFi_5_1__hw_Audio__sink" },
    },
    {
      { "node.name", "matches", "alsa_output.usb-Generic_USB_Audio-00.HiFi_5_1__hw_Audio__sink" },
    },
  },
  apply_properties = {
    ["audio.channels"]         = 6,
    ["audio.position"]         = "FL,FR,FC,LFE,RL,RR",
    ["api.alsa.period-size"]   = 1024,
    ["api.alsa.period-num"]    = 32,
  },
}

table.insert(alsa_monitor.rules, rule)