NAudio.PipeWirePlay

NAudio.PipeWirePlay

Small pw-play-backed playback library for NAudio on Linux/PipeWire.

This repo intentionally stays narrow:

• device discovery via pw-dump
• playback via pw-play --raw
• NAudio.Core-compatible output surface

It is not trying to be a full PipeWire binding.

Why

NAudio has useful core abstractions such as IWaveProvider, WaveFormat, and IWavePlayer, but it does not currently ship a first-party PipeWire output backend.

This project keeps the NAudio-facing API small and uses PipeWire's own pw-play tool as the actual sink.

Requirements

• Linux
• PipeWire tools available in PATH
  • pw-play
  • pw-dump

Projects

• src/NAudio.PipeWirePlay
  • library targeting netstandard2.0
• samples/NAudio.PipeWirePlay.Sample
  • simple console sample

Basic usage

using NAudio.Wave;
using NAudio.PipeWirePlay;

var player = new PwPlayWavePlayer();
player.Init(new SineWaveProvider(440, TimeSpan.FromSeconds(2)));
player.Play();

Discovery

var sinks = await PipeWireDiscovery.ListPlaybackNodesAsync();
foreach (var sink in sinks)
{
    Console.WriteLine($"{sink.Id} {sink.Name} {sink.Description}");
}

Notes

• Pause() currently behaves like Stop(). pw-play is a simple process sink, so true pause/resume is out of scope for this first version.
• Playback writes raw PCM to pw-play over stdin. If the producer gets ahead of realtime, PipeWire/backpressure will block the writer instead of accelerating playback.
• Supported raw formats in this implementation:
  • PCM 8-bit unsigned
  • PCM 16-bit signed
  • PCM 32-bit signed
  • IEEE float 32-bit
  • IEEE float 64-bit