NAME¶

libpipewire-module-protocol-simple - Protocol Simple

DESCRIPTION¶

The simple protocol provides a bidirectional audio stream on a network socket.

It is meant to be used with the simple protocol player app, available on Android to play and record a stream.

Each client that connects will create a capture and/or playback stream, depending on the configuration options.

You can also use it to feed audio data to other clients such as the snapcast server.

MODULE NAME¶

libpipewire-module-protocol-simple

MODULE OPTIONS¶

• capture: boolean if capture is enabled. This will create a capture stream or sink for each connected client.
• playback: boolean if playback is enabled. This will create a playback or source stream for each connected client.
• local.ifname = <str>: interface name to use
• local.ifaddress = <str>: interface address to use
• server.address = []: an array of server addresses to listen on as tcp:(<ip>:)<port>.
• capture.props: optional properties for the capture stream
• playback.props: optional properties for the playback stream

GENERAL OPTIONS¶

Options with well-known behavior.

• remote.name
• audio.rate
• audio.format
• audio.channels
• audio.position
• node.latency
• node.rate
• stream.capture.sink
• node.name
• target.object

By default the server will work with stereo 16 bits samples at 44.1KHz.

EXAMPLE CONFIGURATION¶

# ~/.config/pipewire/pipewire.conf.d/my-protocol-simple.conf
context.modules = [
{   name = libpipewire-module-protocol-simple


    args = {


        # Provide capture stream, clients can capture data from PipeWire


        capture = true


        #


        # Provide playback stream, client can send data to PipeWire for playback


        playback = true


        #


        #audio.rate = 44100


        #audio.format = S16


        #audio.channels = 2


        #audio.position = [ FL FR ]


        #


        # The addresses this server listens on for new


        # client connections


        server.address = [


            "tcp:4711"


        ]


        capture.props = {


            # The node name or id to use for capture.


            #target.object = null


            #


            # To make the capture stream capture the monitor ports


            #stream.capture.sink = false


            #


            # Make this a sink instead of a capture stream


            #media.class = Audio/Sink


        }


        playback.props = {


            # The node name or id to use for playback.


            #target.object = null


            #


            # Make this a source instead of a playback stream


            #media.class = Audio/Source


        }


    }
}
]

EXAMPLE CONFIGURATION FOR A SNAPCAST SERVER¶

 context.modules = [


 {   name = libpipewire-module-protocol-simple


     args = {


         # Provide sink


         capture = true


         audio.rate = 48000


         audio.format = S16


         audio.channels = 2


         audio.position = [ FL FR ]


         # The addresses this server listens on for new


         # client connections


         server.address = [


             "tcp:4711"


         ]


         capture.props = {


             # Make this a sink instead of a capture stream


             media.class = Audio/Sink


         }


     }


 }


 ]


 On the snapcast server, add the following to the `snapserver.conf` file:
\code{.unparsed}


 [stream]


 sampleformat =  48000:16:2


 source = tcp://127.0.0.1:4711?name=PipeWireSnapcast&mode=client

Snapcast will try to connect to the protocol-simple server and fetch the samples from it. Snapcast tries to reconnect when the connection is somehow broken.