PipeWire is a server and user space API to deal with multimedia pipelines.
This includes:

  - Making available sources of video (such as from a capture devices or
    application provided streams) and multiplexing this with
    clients.
  - Accessing sources of video for consumption.
  - Generating graphs for audio and video processing.

Nodes in the graph can be implemented as separate processes, communicating with
sockets and exchanging multimedia content using fd passing.
