Add pipewire audio backend

Cargo.toml

@@ -102,6 +102,11 @@ alsa-backend = ["librespot-playback/alsa-backend"]
 # Integrates with the PulseAudio sound server for advanced audio routing.
 pulseaudio-backend = ["librespot-playback/pulseaudio-backend"]
 
+# pipewire-backend: PipeWire backend (Linux only).
+# Modern audio server that provides low-latency audio with advanced routing capabilities.
+# Designed as a replacement for both PulseAudio and JACK.
+pipewire-backend = ["librespot-playback/pipewire-backend"]
+
 # jackaudio-backend: JACK Audio Connection Kit backend.
 # Professional audio backend for low-latency, high-quality audio routing.
 jackaudio-backend = ["librespot-playback/jackaudio-backend"]

playback/Cargo.toml

@@ -20,6 +20,7 @@ gstreamer-backend = [
     "dep:gstreamer-audio",
 ]
 jackaudio-backend = ["dep:jack"]
+pipewire-backend = ["dep:pipewire", "dep:libspa", "dep:ringbuf"]
 portaudio-backend = ["dep:portaudio-rs"]
 pulseaudio-backend = ["dep:libpulse-binding", "dep:libpulse-simple-binding"]
 rodio-backend = ["dep:cpal", "dep:rodio"]
@@ -74,6 +75,12 @@ gstreamer-audio = { version = "0.24", optional = true }
 libpulse-binding = { version = "2", optional = true, default-features = false }
 libpulse-simple-binding = { version = "2", optional = true, default-features = false }
 
+# Pipewire dependencies
+libspa = { version = "0.9", optional = true }
+pipewire = { version = "0.9", optional = true }
+ringbuf = { version = "0.4", optional = true }
+
+
 # Rodio dependencies
 cpal = { version = "0.16", optional = true }
 rodio = { version = "0.21", optional = true, default-features = false, features = [

playback/src/audio_backend/mod.rs

@@ -95,6 +95,11 @@ mod pulseaudio;
 #[cfg(feature = "pulseaudio-backend")]
 use self::pulseaudio::PulseAudioSink;
 
+#[cfg(feature = "pipewire-backend")]
+mod pipewire;
+#[cfg(feature = "pipewire-backend")]
+use self::pipewire::PipeWireSink;
+
 #[cfg(feature = "jackaudio-backend")]
 mod jackaudio;
 #[cfg(feature = "jackaudio-backend")]
@@ -130,6 +135,8 @@ pub const BACKENDS: &[(&str, SinkBuilder)] = &[
     (PortAudioSink::NAME, mk_sink::<PortAudioSink<'_>>),
     #[cfg(feature = "pulseaudio-backend")]
     (PulseAudioSink::NAME, mk_sink::<PulseAudioSink>),
+    #[cfg(feature = "pipewire-backend")]
+    (PipeWireSink::NAME, mk_sink::<PipeWireSink>),
     #[cfg(feature = "jackaudio-backend")]
     (JackSink::NAME, mk_sink::<JackSink>),
     #[cfg(feature = "gstreamer-backend")]