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Current File : //usr/share/pipewire/jack.conf
# JACK client config file for PipeWire version "1.0.5" #
#
# 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/jack.conf.d/ for system-wide changes or in
# ~/.config/pipewire/jack.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        = 0

    #default.clock.quantum-limit = 8192
}

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.
    #
    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.
    #
    #
    # Boost the data thread priority.
    { name = libpipewire-module-rt
        args = {
            #rt.prio      = 83
            #rt.time.soft = -1
            #rt.time.hard = -1
        }
        flags = [ ifexists nofail ]
    }

    # The native communication protocol.
    { name = libpipewire-module-protocol-native }

    # 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 applications to create metadata objects. It creates
    # a factory for Metadata objects.
    { name = libpipewire-module-metadata }
]

# global properties for all jack clients
jack.properties = {
     #node.latency       = 1024/48000
     #node.rate          = 1/48000
     #node.quantum       = 1024/48000
     #node.lock-quantum  = true
     #node.force-quantum = 0
     #jack.show-monitor  = true
     #jack.merge-monitor = true
     #jack.show-midi     = true
     #jack.short-name    = false
     #jack.filter-name   = false
     #jack.filter-char   = " "
     #
     # allow:           Don't restrict self connect requests
     # fail-external:   Fail self connect requests to external ports only
     # ignore-external: Ignore self connect requests to external ports only
     # fail-all:        Fail all self connect requests
     # ignore-all:      Ignore all self connect requests
     #jack.self-connect-mode = allow
     #jack.locked-process    = true
     #jack.default-as-system = false
     #jack.fix-midi-events   = true
     #jack.global-buffer-size = false
     #jack.max-client-ports   = 768
     #jack.fill-aliases       = false
     #jack.writable-input     = true
}

# client specific properties
jack.rules = [
    {   matches = [
            {
                # all keys must match the value. ! negates. ~ starts regex.
                #client.name                = "Carla"
                #application.process.binary = "jack_simple_client"
                #application.name           = "~jack_simple_client.*"
            }
        ]
        actions = {
            update-props = {
                #node.latency = 512/48000
            }
        }
    }
    {   matches = [ { application.process.binary = "jack_bufsize" } ]
        actions = {
            update-props = {
                jack.global-buffer-size = true   # quantum set globally using metadata
            }
        }
    }
    {   matches = [ { application.process.binary = "qsynth" } ]
        actions = {
            update-props = {
                node.always-process = false # makes qsynth idle
                node.pause-on-idle = false  # makes audio fade out when idle
                node.passive = out          # makes the sink and qsynth suspend
            }
        }
    }
    {   matches = [ { client.name = "Mixxx" } ]
        actions = {
            update-props = {
                jack.merge-monitor = false
            }
        }
    }
]
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