PipeWire: PipeWire Modules

PipeWire 0.3.69

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PipeWire Modules

A PipeWire module is effectively a PipeWire client in an `.so` file that shares the Context with the loading entity.

Usually modules are loaded when they are listed in the configuration files. For example the default configuration file loads several modules:

context.modules = [
...
# 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 devices that run in the
# context of the PipeWire server.
{ name = libpipewire-module-spa-device-factory }
...
]

The matching libraries are:

$ ls -1 /usr/lib64/pipewire-0.3/libpipewire-module*
...
/usr/lib64/pipewire-0.3/libpipewire-module-metadata.so
/usr/lib64/pipewire-0.3/libpipewire-module-profiler.so
/usr/lib64/pipewire-0.3/libpipewire-module-protocol-native.so
/usr/lib64/pipewire-0.3/libpipewire-module-spa-device-factory.so
...

A module's entry point is the `pipewire__module_init` function, see PIPEWIRE_SYMBOL_MODULE_INIT.

int pipewire__module_init(struct pw_impl_module *module, const char *args).`
pw_impl_module

See the PipeWire Module: Example Sink and PipeWire Module: Example Source modules for a general oveview of how modules look like.

List of known modules:

- PipeWire Module: Access
- PipeWire Module: Adapter
- PipeWire Module: AVB
- PipeWire Module: Client Device
- PipeWire Module: Client Node
- PipeWire Module: Combine Stream
- PipeWire Module: Echo Cancel
- PipeWire Module: Example Sink
- PipeWire Module: Example Source
- PipeWire Module: Fallback Sink
- PipeWire Module: Filter-Chain
- PipeWire Module: Link Factory
- PipeWire Module: Loopback
- PipeWire Module: Metadata
- PipeWire Module: Unix Pipe Tunnel
- PipeWire Module: Portal
- PipeWire Module: Profiler
- PipeWire Module: Protocol Native
- PipeWire Module: Protocol Pulse
- PipeWire Module: Protocol Simple
- PipeWire Module: Pulse Tunnel
- PipeWire Module: AirPlay Sink
- PipeWire Module: RAOP Discover
- PipeWire Module: ROC sink
- PipeWire Module: ROC source
- PipeWire Module: Announce and create RTP streams
- PipeWire Module: RTP sink
- PipeWire Module: RTP source
- PipeWire Module: RTP session
- PipeWire Module: RT
- PipeWire Module: Session Manager
- PipeWire Module: X11 Bell
- PipeWire Module: Zeroconf Discover