Add pipewire sound driver

Fixies #2164

Author: bim9262

Cargo.lock

@@ -32,6 +32,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 async-trait = "0.1"
 backon = { version = "1.2", default-features = false, features = ["tokio-sleep"] }
 base64 = { version = "0.22.1" }
+bitflags = "2.6"
 calibright = { version = "0.1.9", features = ["watch"] }
 chrono = { version = "0.4", default-features = false, features = ["clock", "unstable-locales"] }
 chrono-tz = { version = "0.10", features = ["serde"] }
@@ -51,6 +52,7 @@ inotify = "0.11"
 itertools = "0.13"
 libc = "0.2"
 libpulse-binding = { version = "2.0", default-features = false, optional = true }
+libspa = "0.8.0"
 log = "0.4"
 maildir = { version = "0.6", optional = true }
 neli = { version = "0.6", features = ["async"] }

Cargo.toml

@@ -31,6 +31,7 @@ words:
   - bugz
   - busctl
   - caldav
+  - cbrt
   - ccache
   - chrono
   - clippy
@@ -86,6 +87,7 @@ words:
   - kibi
   - kmon
   - libc
+  - libdbus
   - liquidctl
   - locid
   - macchiato
@@ -187,8 +189,8 @@ words:
   - xclip
   - xcolors
   - xesam
-  - xkbswitch
   - xkbevent
+  - xkbswitch
   - XKCD
   - xrandr
   - xresources

cspell.yaml

@@ -1,166 +1,8 @@
-use std::cell::Cell;
-use std::collections::HashMap;
-use std::rc::Rc;
-use std::sync::{Arc, Mutex, Weak};
-use std::thread;
-
-use ::pipewire::{
-    context::Context, keys, main_loop::MainLoop, properties::properties, spa::utils::dict::DictRef,
-    types::ObjectType,
-};
 use itertools::Itertools as _;
-use tokio::sync::Notify;
+use tokio::sync::mpsc::{UnboundedReceiver, unbounded_channel};
 
 use super::*;
-
-static CLIENT: LazyLock<Result<Client>> = LazyLock::new(Client::new);
-
-#[derive(Debug)]
-struct Node {
-    name: String,
-    nick: Option<String>,
-    media_class: Option<String>,
-    media_role: Option<String>,
-    description: Option<String>,
-}
-
-impl Node {
-    fn new(global_id: u32, global_props: &DictRef) -> Self {
-        Self {
-            name: global_props
-                .get(&keys::NODE_NAME)
-                .map_or_else(|| format!("node_{}", global_id), |s| s.to_string()),
-            nick: global_props.get(&keys::NODE_NICK).map(|s| s.to_string()),
-            media_class: global_props.get(&keys::MEDIA_CLASS).map(|s| s.to_string()),
-            media_role: global_props.get(&keys::MEDIA_ROLE).map(|s| s.to_string()),
-            description: global_props
-                .get(&keys::NODE_DESCRIPTION)
-                .map(|s| s.to_string()),
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, PartialOrd, Eq, Ord)]
-struct Link {
-    link_output_node: u32,
-    link_input_node: u32,
-}
-
-impl Link {
-    fn new(global_props: &DictRef) -> Option<Self> {
-        if let (Some(link_output_node), Some(link_input_node)) = (
-            global_props
-                .get(&keys::LINK_OUTPUT_NODE)
-                .and_then(|s| s.parse().ok()),
-            global_props
-                .get(&keys::LINK_INPUT_NODE)
-                .and_then(|s| s.parse().ok()),
-        ) {
-            Some(Self {
-                link_output_node,
-                link_input_node,
-            })
-        } else {
-            None
-        }
-    }
-}
-
-#[derive(Default)]
-struct Data {
-    nodes: HashMap<u32, Node>,
-    links: HashMap<u32, Link>,
-}
-
-#[derive(Default)]
-struct Client {
-    event_listeners: Mutex<Vec<Weak<Notify>>>,
-    data: Mutex<Data>,
-}
-
-impl Client {
-    fn new() -> Result<Client> {
-        thread::Builder::new()
-            .name("privacy_pipewire".to_string())
-            .spawn(Client::main_loop_thread)
-            .error("failed to spawn a thread")?;
-
-        Ok(Client::default())
-    }
-
-    fn main_loop_thread() {
-        let client = CLIENT.as_ref().error("Could not get client").unwrap();
-
-        let proplist = properties! {*keys::APP_NAME => env!("CARGO_PKG_NAME")};
-
-        let main_loop = MainLoop::new(None).expect("Failed to create main loop");
-
-        let context =
-            Context::with_properties(&main_loop, proplist).expect("Failed to create context");
-        let core = context.connect(None).expect("Failed to connect");
-        let registry = core.get_registry().expect("Failed to get registry");
-
-        let updated = Rc::new(Cell::new(false));
-        let updated_copy = updated.clone();
-        let updated_copy2 = updated.clone();
-
-        // Register a callback to the `global` event on the registry, which notifies of any new global objects
-        // appearing on the remote.
-        // The callback will only get called as long as we keep the returned listener alive.
-        let _registry_listener = registry
-            .add_listener_local()
-            .global(move |global| {
-                let Some(global_props) = global.props else {
-                    return;
-                };
-                match &global.type_ {
-                    ObjectType::Node => {
-                        client
-                            .data
-                            .lock()
-                            .unwrap()
-                            .nodes
-                            .insert(global.id, Node::new(global.id, global_props));
-                        updated_copy.set(true);
-                    }
-                    ObjectType::Link => {
-                        let Some(link) = Link::new(global_props) else {
-                            return;
-                        };
-                        client.data.lock().unwrap().links.insert(global.id, link);
-                        updated_copy.set(true);
-                    }
-                    _ => (),
-                }
-            })
-            .global_remove(move |uid| {
-                let mut data = client.data.lock().unwrap();
-                if data.nodes.remove(&uid).is_some() || data.links.remove(&uid).is_some() {
-                    updated_copy2.set(true);
-                }
-            })
-            .register();
-
-        loop {
-            main_loop.loop_().iterate(Duration::from_secs(60 * 60 * 24));
-            if updated.get() {
-                updated.set(false);
-                client
-                    .event_listeners
-                    .lock()
-                    .unwrap()
-                    .retain(|notify| notify.upgrade().inspect(|x| x.notify_one()).is_some());
-            }
-        }
-    }
-
-    fn add_event_listener(&self, notify: &Arc<Notify>) {
-        self.event_listeners
-            .lock()
-            .unwrap()
-            .push(Arc::downgrade(notify));
-    }
-}
+use crate::pipewire::{CLIENT, EventKind, Link, Node};
 
 #[derive(Deserialize, Debug, SmartDefault)]
 #[serde(rename_all = "lowercase", deny_unknown_fields, default)]
@@ -191,15 +33,18 @@ impl NodeDisplay {
 
 pub(super) struct Monitor<'a> {
     config: &'a Config,
-    notify: Arc<Notify>,
+    updates: UnboundedReceiver<EventKind>,
 }
 
 impl<'a> Monitor<'a> {
     pub(super) async fn new(config: &'a Config) -> Result<Self> {
         let client = CLIENT.as_ref().error("Could not get client")?;
-        let notify = Arc::new(Notify::new());
-        client.add_event_listener(&notify);
-        Ok(Self { config, notify })
+        let (tx, rx) = unbounded_channel();
+        client.add_event_listener(tx);
+        Ok(Self {
+            config,
+            updates: rx,
+        })
     }
 }
 
@@ -260,7 +105,16 @@ impl PrivacyMonitor for Monitor<'_> {
     }
 
     async fn wait_for_change(&mut self) -> Result<()> {
-        self.notify.notified().await;
+        while let Some(event) = self.updates.recv().await {
+            if event.intersects(
+                EventKind::NODE_ADDED
+                    | EventKind::NODE_REMOVED
+                    | EventKind::LINK_ADDED
+                    | EventKind::LINK_REMOVED,
+            ) {
+                break;
+            }
+        }
         Ok(())
     }
 }

src/blocks/privacy/pipewire.rs

@@ -10,7 +10,7 @@
 //!
 //! Key | Values | Default
 //! ----|--------|--------
-//! `driver` | `"auto"`, `"pulseaudio"`, `"alsa"`. | `"auto"` (Pulseaudio with ALSA fallback)
+//! `driver` | `"auto"`, `pipewire`, `"pulseaudio"`, `"alsa"`. | `"auto"` (Pipewire with Pulseaudio fallback with ALSA fallback)
 //! `format` | A string to customise the output of this block. See below for available placeholders. | <code>\" $icon {$volume.eng(w:2) \|}\"</code>
 //! `format_alt` | If set, block will switch between `format` and `format_alt` on every click. | `None`
 //! `name` | PulseAudio device name, or the ALSA control name as found in the output of `amixer -D yourdevice scontrols`. | PulseAudio: `@DEFAULT_SINK@` / ALSA: `Master`
@@ -92,7 +92,11 @@
 //! - `volume` (as a progression)
 //! - `headphones`
 
+make_log_macro!(debug, "sound");
+
 mod alsa;
+#[cfg(feature = "pipewire")]
+pub mod pipewire;
 #[cfg(feature = "pulseaudio")]
 mod pulseaudio;
 
@@ -101,8 +105,6 @@ use crate::wrappers::SerdeRegex;
 use indexmap::IndexMap;
 use regex::Regex;
 
-make_log_macro!(debug, "sound");
-
 #[derive(Deserialize, Debug, SmartDefault)]
 #[serde(deny_unknown_fields, default)]
 pub struct Config {
@@ -188,29 +190,32 @@ pub async fn run(config: &Config, api: &CommonApi) -> Result<()> {
             config.device.clone().unwrap_or_else(|| "default".into()),
             config.natural_mapping,
         )?),
+        #[cfg(feature = "pipewire")]
+        SoundDriver::Pipewire => {
+            Box::new(pipewire::Device::new(config.device_kind, config.name.clone()).await?)
+        }
         #[cfg(feature = "pulseaudio")]
         SoundDriver::PulseAudio => Box::new(pulseaudio::Device::new(
             config.device_kind,
             config.name.clone(),
         )?),
-        #[cfg(feature = "pulseaudio")]
-        SoundDriver::Auto => {
+        SoundDriver::Auto => 'blk: {
+            #[cfg(feature = "pipewire")]
+            if let Ok(pipewire) =
+                pipewire::Device::new(config.device_kind, config.name.clone()).await
+            {
+                break 'blk Box::new(pipewire);
+            }
+            #[cfg(feature = "pulseaudio")]
             if let Ok(pulse) = pulseaudio::Device::new(config.device_kind, config.name.clone()) {
-                Box::new(pulse)
-            } else {
-                Box::new(alsa::Device::new(
-                    config.name.clone().unwrap_or_else(|| "Master".into()),
-                    config.device.clone().unwrap_or_else(|| "default".into()),
-                    config.natural_mapping,
-                )?)
+                break 'blk Box::new(pulse);
             }
+            Box::new(alsa::Device::new(
+                config.name.clone().unwrap_or_else(|| "Master".into()),
+                config.device.clone().unwrap_or_else(|| "default".into()),
+                config.natural_mapping,
+            )?)
         }
-        #[cfg(not(feature = "pulseaudio"))]
-        SoundDriver::Auto => Box::new(alsa::Device::new(
-            config.name.clone().unwrap_or_else(|| "Master".into()),
-            config.device.clone().unwrap_or_else(|| "default".into()),
-            config.natural_mapping,
-        )?),
     };
 
     let mappings = match &config.mappings {
@@ -330,6 +335,8 @@ pub enum SoundDriver {
     #[default]
     Auto,
     Alsa,
+    #[cfg(feature = "pipewire")]
+    Pipewire,
     #[cfg(feature = "pulseaudio")]
     PulseAudio,
 }