Add first-pass sound support to Zed

crates/audio/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "audio"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[lib]
+path = "src/audio.rs"
+doctest = false
+
+[dependencies]
+gpui = { path = "../gpui" }
+collections = { path = "../collections" }
+util = { path = "../util" }
+
+rodio = "0.17.1"
+
+log.workspace = true
+
+anyhow.workspace = true
+parking_lot.workspace = true
+
+[dev-dependencies]

crates/audio/src/assets.rs

@@ -0,0 +1,44 @@
+use std::{io::Cursor, sync::Arc};
+
+use anyhow::Result;
+use collections::HashMap;
+use gpui::{AppContext, AssetSource};
+use rodio::{
+    source::{Buffered, SamplesConverter},
+    Decoder, Source,
+};
+
+type Sound = Buffered<SamplesConverter<Decoder<Cursor<Vec<u8>>>, f32>>;
+
+pub struct SoundRegistry {
+    cache: Arc<parking_lot::Mutex<HashMap<String, Sound>>>,
+    assets: Box<dyn AssetSource>,
+}
+
+impl SoundRegistry {
+    pub fn new(source: impl AssetSource) -> Arc<Self> {
+        Arc::new(Self {
+            cache: Default::default(),
+            assets: Box::new(source),
+        })
+    }
+
+    pub fn global(cx: &AppContext) -> Arc<Self> {
+        cx.global::<Arc<Self>>().clone()
+    }
+
+    pub fn get(&self, name: &str) -> Result<impl Source<Item = f32>> {
+        if let Some(wav) = self.cache.lock().get(name) {
+            return Ok(wav.clone());
+        }
+
+        let path = format!("sounds/{}.wav", name);
+        let bytes = self.assets.load(&path)?.into_owned();
+        let cursor = Cursor::new(bytes);
+        let source = Decoder::new(cursor)?.convert_samples::<f32>().buffered();
+
+        self.cache.lock().insert(name.to_string(), source.clone());
+
+        Ok(source)
+    }
+}

crates/audio/src/audio.rs

@@ -0,0 +1,59 @@
+use assets::SoundRegistry;
+use gpui::{AppContext, AssetSource};
+use rodio::{OutputStream, OutputStreamHandle};
+use util::ResultExt;
+
+mod assets;
+
+pub fn init(source: impl AssetSource, cx: &mut AppContext) {
+    cx.set_global(SoundRegistry::new(source));
+    cx.set_global(Audio::new());
+}
+
+pub enum Sound {
+    Joined,
+    Leave,
+    Mute,
+    Unmute,
+}
+
+impl Sound {
+    fn file(&self) -> &'static str {
+        match self {
+            Self::Joined => "joined",
+            Self::Leave => "leave",
+            Self::Mute => "mute",
+            Self::Unmute => "unmute",
+        }
+    }
+}
+
+pub struct Audio {
+    _output_stream: Option<OutputStream>,
+    output_handle: Option<OutputStreamHandle>,
+}
+
+impl Audio {
+    pub fn new() -> Self {
+        let (_output_stream, output_handle) = OutputStream::try_default().log_err().unzip();
+
+        Self {
+            _output_stream,
+            output_handle,
+        }
+    }
+
+    pub fn play_sound(sound: Sound, cx: &AppContext) {
+        let this = cx.global::<Self>();
+
+        let Some(output_handle) = this.output_handle.as_ref() else {
+            return;
+        };
+
+        let Some(source) = SoundRegistry::global(cx).get(sound.file()).log_err() else {
+        return;
+    };
+
+        output_handle.play_raw(source).log_err();
+    }
+}