spa/src/daemon/pipewire-pulse.conf.in

# PulseAudio config file for PipeWire version @VERSION@ #
#
# Copy and edit this file in @PIPEWIRE_CONFIG_DIR@ for system-wide changes
# or in ~/.config/pipewire for local changes.
#
# It is also possible to place a file with an updated section in
# @PIPEWIRE_CONFIG_DIR@/pipewire-pulse.conf.d/ for system-wide changes or in
# ~/.config/pipewire/pipewire-pulse.conf.d/ for local changes.
#

context.properties = {
    ## Configure properties in the system.
    #mem.warn-mlock  = false
    #mem.allow-mlock = true
    #mem.mlock-all   = false
    #log.level       = 2

    #default.clock.quantum-limit = 8192
}

context.spa-libs = {
    audio.convert.* = audioconvert/libspa-audioconvert
    support.*       = support/libspa-support
}

context.modules = [
    { name = libpipewire-module-rt
        args = {
            nice.level   = -11
            #rt.prio      = 88
            #rt.time.soft = -1
            #rt.time.hard = -1
        }
        flags = [ ifexists nofail ]
    }
    { name = libpipewire-module-protocol-native }
    { name = libpipewire-module-client-node }
    { name = libpipewire-module-adapter }
    { name = libpipewire-module-metadata }

    { name = libpipewire-module-protocol-pulse
        args = {
	    # contents of pulse.properties can also be placed here
	    # to have config per server.
        }
    }
]

# Extra scripts can be started here. Setup in default.pa can be moved in
# a script or in pulse.cmd below
context.exec = [
    #{ path = "pactl"        args = "load-module module-always-sink" }
    #{ path = "pactl"        args = "upload-sample my-sample.wav my-sample" }
    #{ path = "/usr/bin/sh"  args = "~/.config/pipewire/default.pw" }
]

# Extra commands can be executed here.
#   load-module : loads a module with args and flags
#      args = "<module-name> <module-args>"
#      flags = [ "no-fail" ]
pulse.cmd = [
    { cmd = "load-module" args = "module-always-sink" flags = [ ] }
    #{ cmd = "load-module" args = "module-switch-on-connect" }
    #{ cmd = "load-module" args = "module-gsettings" flags = [ "nofail" ] }
]

stream.properties = {
    #node.latency          = 1024/48000
    #node.autoconnect      = true
    #resample.quality      = 4
    #channelmix.normalize  = false
    #channelmix.mix-lfe    = false
    #channelmix.upmix      = true
    #channelmix.upmix-method = psd  # none, simple
    #channelmix.lfe-cutoff = 150
    #channelmix.fc-cutoff  = 12000
    #channelmix.rear-delay = 12.0
    #channelmix.stereo-widen = 0.0
    #channelmix.hilbert-taps = 0
    #dither.noise = 0
}

pulse.properties = {
    # the addresses this server listens on
    server.address = [
        "unix:native"
        #"unix:/tmp/something"              # absolute paths may be used
        #"tcp:4713"                         # IPv4 and IPv6 on all addresses
        #"tcp:[::]:9999"                    # IPv6 on all addresses
        #"tcp:127.0.0.1:8888"               # IPv4 on a single address
        #
        #{ address = "tcp:4713"             # address
        #  max-clients = 64                 # maximum number of clients
        #  listen-backlog = 32              # backlog in the server listen queue
        #  client.access = "restricted"     # permissions for clients
        #}
    ]
    #pulse.min.req          = 256/48000     # 5ms
    #pulse.default.req      = 960/48000     # 20 milliseconds
    #pulse.min.frag         = 256/48000     # 5ms
    #pulse.default.frag     = 96000/48000   # 2 seconds
    #pulse.default.tlength  = 96000/48000   # 2 seconds
    #pulse.min.quantum      = 256/48000     # 5ms
    #pulse.idle.timeout     = 0             # don't pause after underruns
    #pulse.default.format   = F32
    #pulse.default.position = [ FL FR ]
    # These overrides are only applied when running in a vm.
    vm.overrides = {
        pulse.min.quantum = 1024/48000      # 22ms
    }
}

# client/stream specific properties
pulse.rules = [
    {
        matches = [
            {
                # all keys must match the value. ~ starts regex.
                #client.name                = "Firefox"
                #application.process.binary = "teams"
                #application.name           = "~speech-dispatcher.*"
            }
        ]
        actions = {
            update-props = {
                #node.latency = 512/48000
            }
            # Possible quirks:"
            #    force-s16-info                 forces sink and source info as S16 format
            #    remove-capture-dont-move       removes the capture DONT_MOVE flag
            #quirks = [ ]
        }
    }
    {
        # skype does not want to use devices that don't have an S16 sample format.
        matches = [
             { application.process.binary = "teams" }
             { application.process.binary = "teams-insiders" }
             { application.process.binary = "skypeforlinux" }
        ]
        actions = { quirks = [ force-s16-info ] }
    }
    {
        # firefox marks the capture streams as don't move and then they
        # can't be moved with pavucontrol or other tools.
        matches = [ { application.process.binary = "firefox" } ]
        actions = { quirks = [ remove-capture-dont-move ] }
    }
    {
        # speech dispatcher asks for too small latency and then underruns.
        matches = [ { application.name = "~speech-dispatcher.*" } ]
        actions = {
            update-props = {
                pulse.min.req          = 512/48000      # 10.6ms
                pulse.min.quantum      = 512/48000      # 10.6ms
                pulse.idle.timeout     = 5              # pause after 5 seconds of underrun
            }
        }
    }
]