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pipewire/minimal.conf

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+# Simple daemon config file for PipeWire version "1.2.3" #
+#
+# Copy and edit this file in /etc/pipewire for system-wide changes
+# or in ~/.config/pipewire for local changes.
+#
+# It is also possible to place a file with an updated section in
+# /etc/pipewire/minimal.conf.d/ for system-wide changes or in
+# ~/.config/pipewire/minimal.conf.d/ for local changes.
+#
+
+context.properties = {
+    ## Configure properties in the system.
+    #library.name.system                   = support/libspa-support
+    #context.data-loop.library.name.system = support/libspa-support
+    #support.dbus                          = true
+    #link.max-buffers                      = 64
+    link.max-buffers                       = 16                       # version < 3 clients can't handle more
+    #mem.warn-mlock                        = false
+    #mem.allow-mlock                       = true
+    #mem.mlock-all                         = false
+    #clock.power-of-two-quantum            = true
+    #log.level                             = 2
+    #cpu.zero.denormals                    = false
+
+    core.daemon = true              # listening for socket connections
+    core.name   = pipewire-0        # core name and socket name
+
+    ## Properties for the DSP configuration.
+    #default.clock.rate          = 48000
+    #default.clock.allowed-rates = [ 48000 ]
+    #default.clock.quantum       = 1024
+    #default.clock.min-quantum   = 32
+    #default.clock.max-quantum   = 2048
+    #default.clock.quantum-limit = 8192
+    #default.clock.quantum-floor = 4
+    #default.video.width         = 640
+    #default.video.height        = 480
+    #default.video.rate.num      = 25
+    #default.video.rate.denom    = 1
+    #
+    settings.check-quantum      = true
+    settings.check-rate         = true
+
+    # This config can use udev or hardcoded ALSA devices. Make sure to
+    # change the alsa device below when disabling udev
+    minimal.use-udev = true
+
+    # Load the pulseaudio emulation daemon
+    minimal.use-pulse = true
+}
+
+context.properties.rules = [
+    {   matches = [ { cpu.vm.name = !null } ]
+        actions = {
+            update-props = {
+                # These overrides are only applied when running in a vm.
+                default.clock.min-quantum = 1024
+	    }
+        }
+    }
+]
+
+context.spa-libs = {
+    #<factory-name regex> = <library-name>
+    #
+    # Used to find spa factory names. It maps an spa factory name
+    # regular expression to a library name that should contain
+    # that factory.
+    #
+    audio.convert.* = audioconvert/libspa-audioconvert
+    audio.adapt     = audioconvert/libspa-audioconvert
+    api.alsa.*      = alsa/libspa-alsa
+    support.*       = support/libspa-support
+}
+
+context.modules = [
+    #{ name = <module-name>
+    #    ( args  = { <key> = <value> ... } )
+    #    ( flags = [ ( ifexists ) ( nofail ) ] )
+    #    ( condition = [ { <key> = <value> ... } ... ] )
+    #}
+    #
+    # Loads a module with the given parameters.
+    # If ifexists is given, the module is ignored when it is not found.
+    # If nofail is given, module initialization failures are ignored.
+    #
+
+    # Uses realtime scheduling to boost the audio thread priorities. This uses
+    # RTKit if the user doesn't have permission to use regular realtime
+    # scheduling.
+    { name = libpipewire-module-rt
+        args = {
+            nice.level   = -11
+            rt.prio      = 88
+            #rt.time.soft = -1
+            #rt.time.hard = -1
+        }
+        flags = [ ifexists nofail ]
+    }
+
+    # The native communication protocol.
+    { name = libpipewire-module-protocol-native }
+
+    # The profile module. Allows application to access profiler
+    # and performance data. It provides an interface that is used
+    # by pw-top and pw-profiler.
+    { name = libpipewire-module-profiler }
+
+    # Allows applications to create metadata objects. It creates
+    # a factory for Metadata objects.
+    { name = libpipewire-module-metadata }
+
+    # Creates a factory for making nodes that run in the
+    # context of the PipeWire server.
+    { name = libpipewire-module-spa-node-factory }
+
+    { name = libpipewire-module-spa-device-factory }
+
+    # Allows creating nodes that run in the context of the
+    # client. Is used by all clients that want to provide
+    # data to PipeWire.
+    { name = libpipewire-module-client-node }
+
+    # The access module can perform access checks and block
+    # new clients.
+    { name = libpipewire-module-access
+        args = {
+            # access.allowed to list an array of paths of allowed
+            # apps.
+            #access.allowed = [
+            #    /usr/bin/pipewire-media-session
+            #]
+
+            # An array of rejected paths.
+            #access.rejected = [ ]
+
+            # An array of paths with restricted access.
+            #access.restricted = [ ]
+
+            # Anything not in the above lists gets assigned the
+            # access.force permission.
+            #access.force = flatpak
+        }
+    }
+
+    # Makes a factory for wrapping nodes in an adapter with a
+    # converter and resampler.
+    { name = libpipewire-module-adapter }
+
+    # Makes a factory for creating links between ports.
+    { name = libpipewire-module-link-factory }
+
+    { name = libpipewire-module-protocol-pulse
+      condition = [ { minimal.use-pulse = true } ]
+    }
+]
+
+pulse.properties = {
+    # the addresses this server listens on
+    server.address = [
+        "unix:native"
+    ]
+}
+
+stream.properties = {
+    adapter.auto-port-config = { mode = dsp }
+}
+
+context.objects = [
+    #{ factory = <factory-name>
+    #    ( args  = { <key> = <value> ... } )
+    #    ( flags = [ ( nofail ) ] )
+    #    ( condition = [ { <key> = <value> ... } ... ] )
+    #}
+    #
+    # Creates an object from a PipeWire factory with the given parameters.
+    # If nofail is given, errors are ignored (and no object is created).
+    #
+    #{ factory = spa-node-factory   args = { factory.name = videotestsrc node.name = videotestsrc node.description = videotestsrc "Spa:Pod:Object:Param:Props:patternType" = 1 } }
+    #{ factory = spa-device-factory args = { factory.name = api.jack.device foo=bar } flags = [ nofail ] }
+    #{ factory = spa-device-factory args = { factory.name = api.alsa.enum.udev } }
+    #{ factory = spa-node-factory   args = { factory.name = api.alsa.seq.bridge node.name = Internal-MIDI-Bridge } }
+    #{ factory = adapter            args = { factory.name = audiotestsrc node.name = my-test node.description = audiotestsrc } }
+    #{ factory = spa-node-factory   args = { factory.name = api.vulkan.compute.source node.name = my-compute-source } }
+
+    # Make a default metadata store
+    { factory = metadata
+        args = {
+            metadata.name = default
+    #       metadata.values = [
+    #            { key = default.audio.sink   value = { name = somesink } }
+    #            { key = default.audio.source value = { name = somesource } }
+    #        ]
+        }
+    }
+
+    # A default dummy driver. This handles nodes marked with the "node.always-process"
+    # property when no other driver is currently active. JACK clients need this.
+    { factory = spa-node-factory
+        args = {
+            factory.name    = support.node.driver
+            node.name       = Dummy-Driver
+            node.group      = pipewire.dummy
+            priority.driver = 20000
+        }
+    }
+    { factory = spa-node-factory
+        args = {
+            factory.name    = support.node.driver
+            node.name       = Freewheel-Driver
+            priority.driver = 19000
+            node.group      = pipewire.freewheel
+            node.freewheel  = true
+            #freewheel.wait = 10
+        }
+    }
+
+    # This creates a ALSA udev device that will enumerate all
+    # ALSA devices. Because it is using ACP and has the auto-profile
+    # property set, this will enable a profile and create associated
+    # nodes, which will be automatically configured to their best
+    # configuration with the auto-port-config settings.
+    # Extra node and device params can be given with node.param and
+    # device.param prefixes.
+    { factory = spa-device-factory
+        args = {
+            factory.name           = api.alsa.enum.udev
+            alsa.use-acp = true
+            device.object.properties = {
+                api.acp.auto-profile = true
+                api.acp.auto-port = true
+                device.object.properties = {
+                    node.adapter             = audio.adapt
+                    resample.disable         = false
+                    adapter.auto-port-config = {
+                        mode = dsp
+                        monitor = false
+                        control = false
+                        position = preserve   # unknown, aux
+                    }
+                    #node.param.Props    = {
+                    #    channelVolumes = [ 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 ]
+                    #}
+                }
+                #device.param.Profile    = {
+                #    #idx = 0
+                #    name = pro-audio
+                #}
+            }
+        }
+        condition = [ { minimal.use-udev = true } ]
+    }
+
+    # This creates a single PCM source device for the given
+    # alsa device path hw:0. You can change source to sink
+    # to make a sink in the same way.
+    { factory = adapter
+        args = {
+            factory.name           = api.alsa.pcm.source
+            node.name              = "system"
+            node.description       = "system"
+            media.class            = "Audio/Source"
+            api.alsa.path          = "hw:4"
+            #api.alsa.period-size   = 0
+            #api.alsa.period-num    = 0
+            #api.alsa.headroom      = 0
+            #api.alsa.start-delay   = 0
+            #api.alsa.disable-mmap  = false
+            #api.alsa.disable-batch = false
+	    #api.alsa.use-chmap     = false
+	    #api.alsa.multirate     = true
+	    #latency.internal.rate  = 0
+	    #latency.internal.ns    = 0
+	    #clock.name             = api.alsa.0
+            node.suspend-on-idle   = false
+            #audio.format           = "S32"
+            #audio.rate             = 48000
+            #audio.allowed-rates    = [ ]
+            #audio.channels         = 4
+            #audio.position         = [ FL FR RL RR ]
+            #resample.quality       = 4
+            resample.disable       = true
+            #monitor.channel-volumes = false
+            #channelmix.normalize   = false
+            #channelmix.mix-lfe     = true
+            #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
+            #channelmix.disable     = false
+            #dither.noise = 0
+            #node.param.Props      = {
+            #    params = [
+            #        audio.channels 6
+            #    ]
+            #}
+            adapter.auto-port-config = {
+                mode = dsp
+                monitor = false
+                control = false
+                position = unknown   # aux, preserve
+            }
+            #node.param.PortConfig    = {
+            #    direction = Output
+            #    mode = dsp
+            #    format = {
+            #        mediaType = audio
+            #        mediaSubtype = raw
+            #        format = F32
+            #        rate = 48000
+            #        channels = 4
+            #        position = [ FL FR RL RR ]
+            #    }
+            #}
+            #node.param.Props    = {
+            #    channelVolumes = [ 0.5 0.4 0.3 0.5 ]
+            #}
+        }
+        condition = [ { minimal.use-udev = false } ]
+    }
+    { factory = adapter
+        args = {
+            factory.name           = api.alsa.pcm.sink
+            node.name              = "system"
+            node.description       = "system"
+            media.class            = "Audio/Sink"
+            api.alsa.path          = "hw:4"
+            #api.alsa.period-size   = 0
+            #api.alsa.period-num    = 0
+            #api.alsa.headroom      = 0
+            #api.alsa.start-delay   = 0
+            #api.alsa.disable-mmap  = false
+            #api.alsa.disable-batch = false
+            #api.alsa.use-chmap     = false
+            #api.alsa.multirate     = true
+            #latency.internal.rate  = 0
+            #latency.internal.ns    = 0
+            #clock.name             = api.alsa.0
+            node.suspend-on-idle     = false
+            #audio.format           = "S32"
+            #audio.rate             = 48000
+            #audio.allowed-rates    = [ ]
+            #audio.channels         = 2
+            #audio.position         = "FL,FR"
+            #resample.quality      = 4
+            resample.disable      = true
+            #channelmix.normalize  = false
+            #channelmix.mix-lfe    = true
+            #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
+            #channelmix.disable     = false
+            #dither.noise = 0
+            #node.param.Props      = {
+            #    params = [
+            #        audio.format  S16
+            #    ]
+            #}
+            adapter.auto-port-config = {
+                mode = dsp
+                monitor = false
+                control = false
+                position = unknown   # aux, preserve
+            }
+            #node.param.PortConfig    = {
+            #    direction = Input
+            #    mode = dsp
+            #    monitor = true
+            #    format = {
+            #        mediaType = audio
+            #        mediaSubtype = raw
+            #        format = F32
+            #        rate = 48000
+            #        channels = 4
+            #    }
+            #}
+            #node.param.Props    = {
+            #    channelVolumes = [ 0.5 0.4 0.3 0.5 ]
+            #}
+        }
+        condition = [ { minimal.use-udev = false } ]
+    }
+    # This creates a new Source node. It will have input ports
+    # that you can link, to provide audio for this source.
+    #{ factory = adapter
+    #    args = {
+    #        factory.name     = support.null-audio-sink
+    #        node.name        = "my-mic"
+    #        node.description = "Microphone"
+    #        media.class      = "Audio/Source/Virtual"
+    #        audio.position   = "FL,FR"
+    #        monitor.passthrough = true
+    #        adapter.auto-port-config = {
+    #            mode = dsp
+    #            monitor = true
+    #            position = preserve   # unknown, aux, preserve
+    #        }
+    #    }
+    #}
+    # This creates a new link between the source and the virtual
+    # source ports.
+    #{ factory = link-factory
+    #    args = {
+    #        link.output.node = system
+    #        link.output.port = capture_1
+    #        link.input.node  = my-mic
+    #        link.input.port  = input_FL
+    #    }
+    #}
+    #{ factory = link-factory
+    #    args = {
+    #        link.output.node = system
+    #        link.output.port = capture_2
+    #        link.input.node  = my-mic
+    #        link.input.port  = input_FR
+    #    }
+    #}
+]
+
+context.exec = [
+    #{   path = <program-name>
+    #    ( args = "<arguments>" | [ <arg1> <arg2> ... ] )
+    #    ( condition = [ { <key> = <value> ... } ... ] )
+    #}
+    #
+    # Execute the given program with arguments.
+    #
+    # You can optionally start the pulseaudio-server here as well
+    # but it is better to start it as a systemd service.
+    # It can be interesting to start another daemon here that listens
+    # on another address with the -a option (eg. -a tcp:4713).
+    #
+    ##{ path = "/usr/bin/pipewire" args = "-c pipewire-pulse.conf" }
+]
+
+node.rules = [
+    {   matches = [
+            {
+                # all keys must match the value. ! negates. ~ starts regex.
+                #alsa.card_name = "ICUSBAUDIO7D"
+                #api.alsa.pcm.stream = "playback"
+            }
+        ]
+        actions = {
+            update-props = {
+                #node.name = "alsa_playback.ICUSBAUDIO7D"
+            }
+        }
+    }
+]
+device.rules = [
+    {   matches = [
+            {
+                #alsa.card_name = "ICUSBAUDIO7D"
+            }
+        ]
+        actions = {
+            update-props = {
+                #device.name = "alsa_card.ICUSBAUDIO7D"
+                #api.acp.auto-profile = false
+                #api.acp.auto-port = false
+                #device.param.Profile    = {
+                #    #idx = 0
+                #    name = off
+                #}
+            }
+        }
+    }
+]

pipewire/pipewire.conf

@@ -0,0 +1,345 @@
+# Daemon config file for PipeWire version "1.2.3" #
+#
+# Copy and edit this file in /etc/pipewire for system-wide changes
+# or in ~/.config/pipewire for local changes.
+#
+# It is also possible to place a file with an updated section in
+# /etc/pipewire/pipewire.conf.d/ for system-wide changes or in
+# ~/.config/pipewire/pipewire.conf.d/ for local changes.
+#
+
+context.properties = {
+    ## Configure properties in the system.
+    #library.name.system                   = support/libspa-support
+    #context.data-loop.library.name.system = support/libspa-support
+    #support.dbus                          = true
+    #link.max-buffers                      = 64
+    link.max-buffers                       = 16                       # version < 3 clients can't handle more
+    mem.warn-mlock                         = true                     # Gentoo should have good RLIMITs now
+    #mem.allow-mlock                       = true
+    #mem.mlock-all                         = false
+    #clock.power-of-two-quantum            = true
+    #log.level                             = 2
+    #cpu.zero.denormals                    = false
+
+    #loop.rt-prio = -1            # -1 = use module-rt prio, 0 disable rt
+    #loop.class = data.rt
+    #thread.affinity = [ 0 1 ]    # optional array of CPUs
+    #context.num-data-loops = 1   # -1 = num-cpus, 0 = no data loops
+    #
+    #context.data-loops = [
+    #    {   loop.rt-prio = -1
+    #        loop.class = [ data.rt audio.rt ]
+    #        #library.name.system = support/libspa-support
+    #        thread.name = data-loop.0
+    #        #thread.affinity = [ 0 1 ]    # optional array of CPUs
+    #    }
+    #]
+
+    core.daemon = true              # listening for socket connections
+    core.name   = pipewire-0        # core name and socket name
+
+    ## Properties for the DSP configuration.
+    #default.clock.rate          = 48000
+    default.clock.rates = [ 44100 48000 96000 192000]
+    default.clock.allowed-rates = [ 44100 48000 96000 192000]
+    #default.clock.quantum       = 1024
+    #default.clock.min-quantum   = 32
+    #default.clock.max-quantum   = 2048
+    #default.clock.quantum-limit = 8192
+    #default.clock.quantum-floor = 4
+    #default.video.width         = 640
+    #default.video.height        = 480
+    #default.video.rate.num      = 25
+    #default.video.rate.denom    = 1
+    #
+    #settings.check-quantum      = false
+    #settings.check-rate         = false
+
+    # keys checked below to disable module loading
+    module.x11.bell = true
+    # enables autoloading of access module, when disabled an alternative
+    # access module needs to be loaded.
+    module.access = true
+    # enables autoloading of module-jackdbus-detect
+    module.jackdbus-detect = true
+}
+
+context.properties.rules = [
+    {   matches = [ { cpu.vm.name = !null } ]
+        actions = {
+            update-props = {
+                # These overrides are only applied when running in a vm.
+                default.clock.min-quantum = 1024
+	    }
+        }
+    }
+]
+
+context.spa-libs = {
+    #<factory-name regex> = <library-name>
+    #
+    # Used to find spa factory names. It maps an spa factory name
+    # regular expression to a library name that should contain
+    # that factory.
+    #
+    audio.convert.* = audioconvert/libspa-audioconvert
+    avb.*           = avb/libspa-avb
+    api.alsa.*      = alsa/libspa-alsa
+    api.v4l2.*      = v4l2/libspa-v4l2
+    api.libcamera.* = libcamera/libspa-libcamera
+    api.bluez5.*    = bluez5/libspa-bluez5
+    api.vulkan.*    = vulkan/libspa-vulkan
+    api.jack.*      = jack/libspa-jack
+    support.*       = support/libspa-support
+    video.convert.* = videoconvert/libspa-videoconvert
+    #videotestsrc   = videotestsrc/libspa-videotestsrc
+    #audiotestsrc   = audiotestsrc/libspa-audiotestsrc
+}
+
+context.modules = [
+    #{ name = <module-name>
+    #    ( args  = { <key> = <value> ... } )
+    #    ( flags = [ ( ifexists ) ( nofail ) ] )
+    #    ( condition = [ { <key> = <value> ... } ... ] )
+    #}
+    #
+    # Loads a module with the given parameters.
+    # If ifexists is given, the module is ignored when it is not found.
+    # If nofail is given, module initialization failures are ignored.
+    # If condition is given, the module is loaded only when the context
+    # properties all match the match rules.
+    #
+
+    # Uses realtime scheduling to boost the audio thread priorities. This uses
+    # RTKit if the user doesn't have permission to use regular realtime
+    # scheduling. You can also clamp utilisation values to improve scheduling
+    # on embedded and heterogeneous systems, e.g. Arm big.LITTLE devices.
+    { name = libpipewire-module-rt
+        args = {
+            nice.level    = -11
+            rt.prio       = 88
+            #rt.time.soft = -1
+            #rt.time.hard = -1
+            #uclamp.min = 0
+            #uclamp.max = 1024
+        }
+        flags = [ ifexists nofail ]
+    }
+
+    # The native communication protocol.
+    { name = libpipewire-module-protocol-native
+        args = {
+            # List of server Unix sockets, and optionally permissions
+            #sockets = [ { name = "pipewire-0" }, { name = "pipewire-0-manager" } ]
+        }
+    }
+
+    # The profile module. Allows application to access profiler
+    # and performance data. It provides an interface that is used
+    # by pw-top and pw-profiler.
+    { name = libpipewire-module-profiler }
+
+    # Allows applications to create metadata objects. It creates
+    # a factory for Metadata objects.
+    { name = libpipewire-module-metadata }
+
+    # Creates a factory for making devices that run in the
+    # context of the PipeWire server.
+    { name = libpipewire-module-spa-device-factory }
+
+    # Creates a factory for making nodes that run in the
+    # context of the PipeWire server.
+    { name = libpipewire-module-spa-node-factory }
+
+    # Allows creating nodes that run in the context of the
+    # client. Is used by all clients that want to provide
+    # data to PipeWire.
+    { name = libpipewire-module-client-node }
+
+    # Allows creating devices that run in the context of the
+    # client. Is used by the session manager.
+    { name = libpipewire-module-client-device }
+
+    # The portal module monitors the PID of the portal process
+    # and tags connections with the same PID as portal
+    # connections.
+    { name = libpipewire-module-portal
+        flags = [ ifexists nofail ]
+    }
+
+    # The access module can perform access checks and block
+    # new clients.
+    { name = libpipewire-module-access
+        args = {
+            # Socket-specific access permissions
+            #access.socket = { pipewire-0 = "default", pipewire-0-manager = "unrestricted" }
+
+            # Deprecated legacy mode (not socket-based),
+            # for now enabled by default if access.socket is not specified
+            #access.legacy = true
+        }
+        condition = [ { module.access = true } ]
+    }
+
+    # Makes a factory for wrapping nodes in an adapter with a
+    # converter and resampler.
+    { name = libpipewire-module-adapter }
+
+    # Makes a factory for creating links between ports.
+    { name = libpipewire-module-link-factory }
+
+    # Provides factories to make session manager objects.
+    { name = libpipewire-module-session-manager }
+
+    # Use libcanberra to play X11 Bell
+    { name = libpipewire-module-x11-bell
+        args = {
+            #sink.name = "@DEFAULT_SINK@"
+            #sample.name = "bell-window-system"
+            #x11.display = null
+            #x11.xauthority = null
+        }
+        flags = [ ifexists nofail ]
+        condition = [ { module.x11.bell = true } ]
+    }
+    { name = libpipewire-module-jackdbus-detect
+        args = {
+            #jack.library     = libjack.so.0
+            #jack.server      = null
+            #jack.client-name = PipeWire
+            #jack.connect     = true
+            #tunnel.mode      = duplex  # source|sink|duplex
+            source.props = {
+                #audio.channels = 2
+		#midi.ports = 1
+                #audio.position = [ FL FR ]
+                # extra sink properties
+            }
+            sink.props = {
+                #audio.channels = 2
+		#midi.ports = 1
+                #audio.position = [ FL FR ]
+                # extra sink properties
+            }
+        }
+        flags = [ ifexists nofail ]
+        condition = [ { module.jackdbus-detect = true } ]
+    }
+]
+
+context.objects = [
+    #{ factory = <factory-name>
+    #    ( args  = { <key> = <value> ... } )
+    #    ( flags = [ ( nofail ) ] )
+    #    ( condition = [ { <key> = <value> ... } ... ] )
+    #}
+    #
+    # Creates an object from a PipeWire factory with the given parameters.
+    # If nofail is given, errors are ignored (and no object is created).
+    # If condition is given, the object is created only when the context properties
+    # all match the match rules.
+    #
+    #{ factory = spa-node-factory   args = { factory.name = videotestsrc node.name = videotestsrc node.description = videotestsrc "Spa:Pod:Object:Param:Props:patternType" = 1 } }
+    #{ factory = spa-device-factory args = { factory.name = api.jack.device foo=bar } flags = [ nofail ] }
+    #{ factory = spa-device-factory args = { factory.name = api.alsa.enum.udev } }
+    #{ factory = spa-node-factory   args = { factory.name = api.alsa.seq.bridge node.name = Internal-MIDI-Bridge } }
+    #{ factory = adapter            args = { factory.name = audiotestsrc node.name = my-test node.description = audiotestsrc } }
+    #{ factory = spa-node-factory   args = { factory.name = api.vulkan.compute.source node.name = my-compute-source } }
+
+    # A default dummy driver. This handles nodes marked with the "node.always-process"
+    # property when no other driver is currently active. JACK clients need this.
+    { factory = spa-node-factory
+        args = {
+            factory.name    = support.node.driver
+            node.name       = Dummy-Driver
+            node.group      = pipewire.dummy
+            node.sync-group  = sync.dummy
+            priority.driver = 200000
+            #clock.id       = monotonic # realtime | tai | monotonic-raw | boottime
+            #clock.name     = "clock.system.monotonic"
+        }
+    }
+    { factory = spa-node-factory
+        args = {
+            factory.name    = support.node.driver
+            node.name       = Freewheel-Driver
+            priority.driver = 190000
+            node.group      = pipewire.freewheel
+            node.sync-group  = sync.dummy
+            node.freewheel  = true
+            #freewheel.wait = 10
+        }
+    }
+
+    # This creates a new Source node. It will have input ports
+    # that you can link, to provide audio for this source.
+    #{ factory = adapter
+    #    args = {
+    #        factory.name     = support.null-audio-sink
+    #        node.name        = "my-mic"
+    #        node.description = "Microphone"
+    #        media.class      = "Audio/Source/Virtual"
+    #        audio.position   = "FL,FR"
+    #        monitor.passthrough = true
+    #    }
+    #}
+
+    # This creates a single PCM source device for the given
+    # alsa device path hw:0. You can change source to sink
+    # to make a sink in the same way.
+    #{ factory = adapter
+    #    args = {
+    #        factory.name           = api.alsa.pcm.source
+    #        node.name              = "alsa-source"
+    #        node.description       = "PCM Source"
+    #        media.class            = "Audio/Source"
+    #        api.alsa.path          = "hw:0"
+    #        api.alsa.period-size   = 1024
+    #        api.alsa.headroom      = 0
+    #        api.alsa.disable-mmap  = false
+    #        api.alsa.disable-batch = false
+    #        audio.format           = "S16LE"
+    #        audio.rate             = 48000
+    #        audio.channels         = 2
+    #        audio.position         = "FL,FR"
+    #    }
+    #}
+
+    # Use the metadata factory to create metadata and some default values.
+    #{ factory = metadata
+    #    args = {
+    #        metadata.name = my-metadata
+    #        metadata.values = [
+    #            { key = default.audio.sink   value = { name = somesink } }
+    #            { key = default.audio.source value = { name = somesource } }
+    #        ]
+    #    }
+    #}
+]
+
+context.exec = [
+    #{   path = <program-name>
+    #    ( args = "<arguments>" | [ <arg1> <arg2> ... ] )
+    #    ( condition = [ { <key> = <value> ... } ... ] )
+    #}
+    #
+    # Execute the given program with arguments.
+    # If condition is given, the program is executed only when the context
+    # properties all match the match rules.
+    #
+    # You can optionally start the session manager here,
+    # but it is better to start it as a systemd service.
+    # Run the session manager with -h for options.
+    #
+    #{ path = "/usr/bin/pipewire-media-session" args = ""
+    #  condition = [ { exec.session-manager = null } { exec.session-manager = true } ] }
+    #
+    # You can optionally start the pulseaudio-server here as well
+    # but it is better to start it as a systemd service.
+    # It can be interesting to start another daemon here that listens
+    # on another address with the -a option (eg. -a tcp:4713).
+    #
+    #{ path = "/usr/bin/pipewire" args = [ "-c" "pipewire-pulse.conf" ]
+    #  condition = [ { exec.pipewire-pulse = null } { exec.pipewire-pulse = true } ] }
+]