logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/livekit_client/Cargo.toml

@@ -0,0 +1,75 @@
+[package]
+name = "livekit_client"
+version = "0.1.0"
+edition.workspace = true
+description = "Logic for using LiveKit with GPUI"
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/lib.rs"
+doctest = false
+
+[[example]]
+name = "test_app"
+
+[features]
+test-support = ["collections/test-support", "gpui/test-support"]
+
+[dependencies]
+anyhow.workspace = true
+async-trait.workspace = true
+audio.workspace = true
+collections.workspace = true
+cpal.workspace = true
+futures.workspace = true
+gpui = { workspace = true, features = ["screen-capture", "x11", "wayland"] }
+gpui_tokio.workspace = true
+http_client_tls.workspace = true
+image.workspace = true
+livekit_api.workspace = true
+log.workspace = true
+nanoid.workspace = true
+parking_lot.workspace = true
+postage.workspace = true
+rodio.workspace = true
+serde.workspace = true
+serde_urlencoded.workspace = true
+settings.workspace = true
+smallvec.workspace = true
+ui.workspace = true
+util.workspace = true
+
+[target.'cfg(not(any(all(target_os = "windows", target_env = "gnu"), target_os = "freebsd")))'.dependencies]
+libwebrtc.workspace = true
+livekit.workspace = true
+
+[target.'cfg(target_os = "linux")'.dependencies]
+tokio = { workspace = true, features = ["time"] }
+webrtc-sys.workspace = true
+
+[target.'cfg(any(target_os = "linux", target_os = "freebsd", target_os = "windows"))'.dependencies]
+scap.workspace = true
+
+[target.'cfg(target_os = "macos")'.dependencies]
+cocoa.workspace = true
+core-foundation.workspace = true
+core-video.workspace = true
+coreaudio-rs = "0.12.1"
+objc.workspace = true
+
+[dev-dependencies]
+collections = { workspace = true, features = ["test-support"] }
+gpui = { workspace = true, features = ["test-support"] }
+gpui_platform.workspace = true
+simplelog.workspace = true
+
+[build-dependencies]
+serde.workspace = true
+serde_json.workspace = true
+
+[package.metadata.cargo-machete]
+ignored = ["serde_json"]

crates/livekit_client/LICENSE-GPL

@@ -0,0 +1 @@
+../../LICENSE-GPL

crates/livekit_client/examples/test_app.rs

@@ -0,0 +1,392 @@
+use std::sync::Arc;
+
+use futures::StreamExt;
+use gpui::{
+    AppContext as _, AsyncApp, Bounds, Context, Entity, InteractiveElement, KeyBinding, Menu,
+    MenuItem, ParentElement, Pixels, Render, ScreenCaptureStream, SharedString,
+    StatefulInteractiveElement as _, Styled, Task, Window, WindowBounds, WindowHandle,
+    WindowOptions, actions, bounds, div, point,
+    prelude::{FluentBuilder as _, IntoElement},
+    px, rgb, size,
+};
+use livekit_client::{
+    AudioStream, LocalTrackPublication, Participant, ParticipantIdentity, RemoteParticipant,
+    RemoteTrackPublication, RemoteVideoTrack, RemoteVideoTrackView, Room, RoomEvent,
+};
+
+use livekit_api::token::{self, VideoGrant};
+use log::LevelFilter;
+use simplelog::SimpleLogger;
+
+actions!(livekit_client, [Quit]);
+
+fn main() {
+    SimpleLogger::init(LevelFilter::Info, Default::default()).expect("could not initialize logger");
+
+    gpui_platform::application().run(|cx| {
+        #[cfg(any(test, feature = "test-support"))]
+        println!("USING TEST LIVEKIT");
+
+        #[cfg(not(any(test, feature = "test-support")))]
+        println!("USING REAL LIVEKIT");
+
+        gpui_tokio::init(cx);
+
+        cx.activate(true);
+        cx.on_action(quit);
+        cx.bind_keys([KeyBinding::new("cmd-q", Quit, None)]);
+        cx.set_menus([Menu::new("Zed").items([MenuItem::action("Quit", Quit)])]);
+
+        let livekit_url = std::env::var("LIVEKIT_URL").unwrap_or("http://localhost:7880".into());
+        let livekit_key = std::env::var("LIVEKIT_KEY").unwrap_or("devkey".into());
+        let livekit_secret = std::env::var("LIVEKIT_SECRET").unwrap_or("secret".into());
+        let height = px(800.);
+        let width = px(800.);
+
+        cx.spawn(async move |cx| {
+            let mut windows = Vec::new();
+            for i in 0..2 {
+                let token = token::create(
+                    &livekit_key,
+                    &livekit_secret,
+                    Some(&format!("test-participant-{i}")),
+                    VideoGrant::to_join("wtej-trty"),
+                )
+                .unwrap();
+
+                let bounds = bounds(point(width * i, px(0.0)), size(width, height));
+                let window = LivekitWindow::new(livekit_url.clone(), token, bounds, cx).await;
+                windows.push(window);
+            }
+        })
+        .detach();
+    });
+}
+
+fn quit(_: &Quit, cx: &mut gpui::App) {
+    cx.quit();
+}
+
+struct LivekitWindow {
+    room: Arc<livekit_client::Room>,
+    microphone_track: Option<LocalTrackPublication>,
+    screen_share_track: Option<LocalTrackPublication>,
+    microphone_stream: Option<livekit_client::AudioStream>,
+    screen_share_stream: Option<Box<dyn ScreenCaptureStream>>,
+    remote_participants: Vec<(ParticipantIdentity, ParticipantState)>,
+    _events_task: Task<()>,
+}
+
+#[derive(Default)]
+struct ParticipantState {
+    audio_output_stream: Option<(RemoteTrackPublication, AudioStream)>,
+    muted: bool,
+    screen_share_output_view: Option<(RemoteVideoTrack, Entity<RemoteVideoTrackView>)>,
+    speaking: bool,
+}
+
+impl LivekitWindow {
+    async fn new(
+        url: String,
+        token: String,
+        bounds: Bounds<Pixels>,
+        cx: &mut AsyncApp,
+    ) -> WindowHandle<Self> {
+        let (room, mut events) =
+            Room::connect(url.clone(), token, cx)
+                .await
+                .unwrap_or_else(|err| {
+                    eprintln!(
+                        "Failed to connect to {url}: {err}.\nTry `foreman start` to run the livekit server"
+                    );
+
+                    std::process::exit(1)
+                });
+
+        cx.update(|cx| {
+            cx.open_window(
+                WindowOptions {
+                    window_bounds: Some(WindowBounds::Windowed(bounds)),
+                    ..Default::default()
+                },
+                |window, cx| {
+                    cx.new(|cx| {
+                        let _events_task = cx.spawn_in(window, async move |this, cx| {
+                            while let Some(event) = events.next().await {
+                                cx.update(|window, cx| {
+                                    this.update(cx, |this: &mut LivekitWindow, cx| {
+                                        this.handle_room_event(event, window, cx)
+                                    })
+                                })
+                                .ok();
+                            }
+                        });
+
+                        Self {
+                            room: Arc::new(room),
+                            microphone_track: None,
+                            microphone_stream: None,
+                            screen_share_track: None,
+                            screen_share_stream: None,
+                            remote_participants: Vec::new(),
+                            _events_task,
+                        }
+                    })
+                },
+            )
+            .unwrap()
+        })
+    }
+
+    fn handle_room_event(&mut self, event: RoomEvent, window: &mut Window, cx: &mut Context<Self>) {
+        eprintln!("event: {event:?}");
+
+        match event {
+            RoomEvent::TrackUnpublished {
+                publication,
+                participant,
+            } => {
+                let output = self.remote_participant(participant);
+                let unpublish_sid = publication.sid();
+                if output
+                    .audio_output_stream
+                    .as_ref()
+                    .is_some_and(|(track, _)| track.sid() == unpublish_sid)
+                {
+                    output.audio_output_stream.take();
+                }
+                if output
+                    .screen_share_output_view
+                    .as_ref()
+                    .is_some_and(|(track, _)| track.sid() == unpublish_sid)
+                {
+                    output.screen_share_output_view.take();
+                }
+                cx.notify();
+            }
+
+            RoomEvent::TrackSubscribed {
+                publication,
+                participant,
+                track,
+            } => {
+                let room = self.room.clone();
+                let output = self.remote_participant(participant);
+                match track {
+                    livekit_client::RemoteTrack::Audio(track) => {
+                        output.audio_output_stream = Some((
+                            publication,
+                            room.play_remote_audio_track(&track, cx).unwrap(),
+                        ));
+                    }
+                    livekit_client::RemoteTrack::Video(track) => {
+                        output.screen_share_output_view = Some((
+                            track.clone(),
+                            cx.new(|cx| RemoteVideoTrackView::new(track, window, cx)),
+                        ));
+                    }
+                }
+                cx.notify();
+            }
+
+            RoomEvent::TrackMuted { participant, .. } => {
+                if let Participant::Remote(participant) = participant {
+                    self.remote_participant(participant).muted = true;
+                    cx.notify();
+                }
+            }
+
+            RoomEvent::TrackUnmuted { participant, .. } => {
+                if let Participant::Remote(participant) = participant {
+                    self.remote_participant(participant).muted = false;
+                    cx.notify();
+                }
+            }
+
+            RoomEvent::ActiveSpeakersChanged { speakers } => {
+                for (identity, output) in &mut self.remote_participants {
+                    output.speaking = speakers.iter().any(|speaker| {
+                        if let Participant::Remote(speaker) = speaker {
+                            speaker.identity() == *identity
+                        } else {
+                            false
+                        }
+                    });
+                }
+                cx.notify();
+            }
+
+            _ => {}
+        }
+
+        cx.notify();
+    }
+
+    fn remote_participant(&mut self, participant: RemoteParticipant) -> &mut ParticipantState {
+        match self
+            .remote_participants
+            .binary_search_by_key(&&participant.identity(), |row| &row.0)
+        {
+            Ok(ix) => &mut self.remote_participants[ix].1,
+            Err(ix) => {
+                self.remote_participants
+                    .insert(ix, (participant.identity(), ParticipantState::default()));
+                &mut self.remote_participants[ix].1
+            }
+        }
+    }
+
+    fn toggle_mute(&mut self, window: &mut Window, cx: &mut Context<Self>) {
+        if let Some(track) = &self.microphone_track {
+            if track.is_muted() {
+                track.unmute(cx);
+            } else {
+                track.mute(cx);
+            }
+            cx.notify();
+        } else {
+            let room = self.room.clone();
+            cx.spawn_in(window, async move |this, cx| {
+                let (publication, stream, _input_lag_us) = room
+                    .publish_local_microphone_track("test_user".to_string(), false, cx)
+                    .await
+                    .unwrap();
+                this.update(cx, |this, cx| {
+                    this.microphone_track = Some(publication);
+                    this.microphone_stream = Some(stream);
+                    cx.notify();
+                })
+            })
+            .detach();
+        }
+    }
+
+    fn toggle_screen_share(&mut self, window: &mut Window, cx: &mut Context<Self>) {
+        if let Some(track) = self.screen_share_track.take() {
+            self.screen_share_stream.take();
+            let participant = self.room.local_participant();
+            cx.spawn(async move |_, cx| {
+                participant.unpublish_track(track.sid(), cx).await.unwrap();
+            })
+            .detach();
+            cx.notify();
+        } else {
+            let participant = self.room.local_participant();
+            let sources = cx.screen_capture_sources();
+            cx.spawn_in(window, async move |this, cx| {
+                let sources = sources.await.unwrap()?;
+                let source = sources.into_iter().next().unwrap();
+
+                let (publication, stream) = participant
+                    .publish_screenshare_track(&*source, cx)
+                    .await
+                    .unwrap();
+                this.update(cx, |this, cx| {
+                    this.screen_share_track = Some(publication);
+                    this.screen_share_stream = Some(stream);
+                    cx.notify();
+                })
+            })
+            .detach();
+        }
+    }
+
+    fn toggle_remote_audio_for_participant(
+        &mut self,
+        identity: &ParticipantIdentity,
+        cx: &mut Context<Self>,
+    ) -> Option<()> {
+        let participant = self.remote_participants.iter().find_map(|(id, state)| {
+            if id == identity { Some(state) } else { None }
+        })?;
+        let publication = &participant.audio_output_stream.as_ref()?.0;
+        publication.set_enabled(!publication.is_enabled(), cx);
+        cx.notify();
+        Some(())
+    }
+}
+
+impl Render for LivekitWindow {
+    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
+        fn button() -> gpui::Div {
+            div()
+                .w(px(180.0))
+                .h(px(30.0))
+                .px_2()
+                .m_2()
+                .bg(rgb(0x8888ff))
+        }
+
+        div()
+            .bg(rgb(0xffffff))
+            .size_full()
+            .flex()
+            .flex_col()
+            .child(
+                div().bg(rgb(0xffd4a8)).flex().flex_row().children([
+                    button()
+                        .id("toggle-mute")
+                        .child(if let Some(track) = &self.microphone_track {
+                            if track.is_muted() { "Unmute" } else { "Mute" }
+                        } else {
+                            "Publish mic"
+                        })
+                        .on_click(cx.listener(|this, _, window, cx| this.toggle_mute(window, cx))),
+                    button()
+                        .id("toggle-screen-share")
+                        .child(if self.screen_share_track.is_none() {
+                            "Share screen"
+                        } else {
+                            "Unshare screen"
+                        })
+                        .on_click(
+                            cx.listener(|this, _, window, cx| this.toggle_screen_share(window, cx)),
+                        ),
+                ]),
+            )
+            .child(
+                div()
+                    .id("remote-participants")
+                    .overflow_y_scroll()
+                    .flex()
+                    .flex_col()
+                    .flex_grow()
+                    .children(self.remote_participants.iter().map(|(identity, state)| {
+                        div()
+                            .h(px(1080.0))
+                            .flex()
+                            .flex_col()
+                            .m_2()
+                            .px_2()
+                            .bg(rgb(0x8888ff))
+                            .child(SharedString::from(if state.speaking {
+                                format!("{} (speaking)", &identity.0)
+                            } else if state.muted {
+                                format!("{} (muted)", &identity.0)
+                            } else {
+                                identity.0.clone()
+                            }))
+                            .when_some(state.audio_output_stream.as_ref(), |el, state| {
+                                el.child(
+                                    button()
+                                        .id(identity.0.clone())
+                                        .child(if state.0.is_enabled() {
+                                            "Deafen"
+                                        } else {
+                                            "Undeafen"
+                                        })
+                                        .on_click(cx.listener({
+                                            let identity = identity.clone();
+                                            move |this, _, _, cx| {
+                                                this.toggle_remote_audio_for_participant(
+                                                    &identity, cx,
+                                                );
+                                            }
+                                        })),
+                                )
+                            })
+                            .children(state.screen_share_output_view.as_ref().map(|e| e.1.clone()))
+                    })),
+            )
+    }
+}

crates/livekit_client/src/lib.rs

@@ -0,0 +1,253 @@
+use anyhow::Context as _;
+use collections::HashMap;
+use cpal::DeviceId;
+
+mod remote_video_track_view;
+pub use remote_video_track_view::{RemoteVideoTrackView, RemoteVideoTrackViewEvent};
+use rodio::DeviceTrait as _;
+
+mod record;
+pub use record::CaptureInput;
+
+#[cfg(any(
+    rust_analyzer,
+    not(any(
+        test,
+        feature = "test-support",
+        all(target_os = "windows", target_env = "gnu"),
+        target_os = "freebsd"
+    ))
+))]
+mod livekit_client;
+#[cfg(any(
+    rust_analyzer,
+    not(any(
+        test,
+        feature = "test-support",
+        all(target_os = "windows", target_env = "gnu"),
+        target_os = "freebsd"
+    ))
+))]
+pub use livekit_client::*;
+
+#[cfg(all(
+    not(rust_analyzer),
+    any(
+        test,
+        feature = "test-support",
+        all(target_os = "windows", target_env = "gnu"),
+        target_os = "freebsd"
+    )
+))]
+mod mock_client;
+#[cfg(all(
+    not(rust_analyzer),
+    any(
+        test,
+        feature = "test-support",
+        all(target_os = "windows", target_env = "gnu"),
+        target_os = "freebsd"
+    )
+))]
+pub mod test;
+#[cfg(all(
+    not(rust_analyzer),
+    any(
+        test,
+        feature = "test-support",
+        all(target_os = "windows", target_env = "gnu"),
+        target_os = "freebsd"
+    )
+))]
+pub use mock_client::*;
+
+#[derive(Debug, Clone)]
+pub enum Participant {
+    Local(LocalParticipant),
+    Remote(RemoteParticipant),
+}
+
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+pub enum ConnectionQuality {
+    Excellent,
+    Good,
+    Poor,
+    Lost,
+}
+
+#[derive(Debug, Clone)]
+pub enum TrackPublication {
+    Local(LocalTrackPublication),
+    Remote(RemoteTrackPublication),
+}
+
+impl TrackPublication {
+    pub fn sid(&self) -> TrackSid {
+        match self {
+            TrackPublication::Local(local) => local.sid(),
+            TrackPublication::Remote(remote) => remote.sid(),
+        }
+    }
+
+    pub fn is_muted(&self) -> bool {
+        match self {
+            TrackPublication::Local(local) => local.is_muted(),
+            TrackPublication::Remote(remote) => remote.is_muted(),
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub enum RemoteTrack {
+    Audio(RemoteAudioTrack),
+    Video(RemoteVideoTrack),
+}
+
+impl RemoteTrack {
+    pub fn sid(&self) -> TrackSid {
+        match self {
+            RemoteTrack::Audio(remote_audio_track) => remote_audio_track.sid(),
+            RemoteTrack::Video(remote_video_track) => remote_video_track.sid(),
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub enum LocalTrack {
+    Audio(LocalAudioTrack),
+    Video(LocalVideoTrack),
+}
+
+#[derive(Clone, Debug)]
+#[non_exhaustive]
+pub enum RoomEvent {
+    ParticipantConnected(RemoteParticipant),
+    ParticipantDisconnected(RemoteParticipant),
+    LocalTrackPublished {
+        publication: LocalTrackPublication,
+        track: LocalTrack,
+        participant: LocalParticipant,
+    },
+    LocalTrackUnpublished {
+        publication: LocalTrackPublication,
+        participant: LocalParticipant,
+    },
+    LocalTrackSubscribed {
+        track: LocalTrack,
+    },
+    TrackSubscribed {
+        track: RemoteTrack,
+        publication: RemoteTrackPublication,
+        participant: RemoteParticipant,
+    },
+    TrackUnsubscribed {
+        track: RemoteTrack,
+        publication: RemoteTrackPublication,
+        participant: RemoteParticipant,
+    },
+    TrackSubscriptionFailed {
+        participant: RemoteParticipant,
+        // error: livekit::track::TrackError,
+        track_sid: TrackSid,
+    },
+    TrackPublished {
+        publication: RemoteTrackPublication,
+        participant: RemoteParticipant,
+    },
+    TrackUnpublished {
+        publication: RemoteTrackPublication,
+        participant: RemoteParticipant,
+    },
+    TrackMuted {
+        participant: Participant,
+        publication: TrackPublication,
+    },
+    TrackUnmuted {
+        participant: Participant,
+        publication: TrackPublication,
+    },
+    RoomMetadataChanged {
+        old_metadata: String,
+        metadata: String,
+    },
+    ParticipantMetadataChanged {
+        participant: Participant,
+        old_metadata: String,
+        metadata: String,
+    },
+    ParticipantNameChanged {
+        participant: Participant,
+        old_name: String,
+        name: String,
+    },
+    ParticipantAttributesChanged {
+        participant: Participant,
+        changed_attributes: HashMap<String, String>,
+    },
+    ActiveSpeakersChanged {
+        speakers: Vec<Participant>,
+    },
+    ConnectionQualityChanged {
+        participant: Participant,
+        quality: ConnectionQuality,
+    },
+    ConnectionStateChanged(ConnectionState),
+    Connected {
+        participants_with_tracks: Vec<(RemoteParticipant, Vec<RemoteTrackPublication>)>,
+    },
+    Disconnected {
+        reason: &'static str,
+    },
+    Reconnecting,
+    Reconnected,
+}
+
+pub(crate) fn default_device(
+    input: bool,
+    device_id: Option<&DeviceId>,
+) -> anyhow::Result<(cpal::Device, cpal::SupportedStreamConfig)> {
+    let device = audio::resolve_device(device_id, input)?;
+    let config = if input {
+        device
+            .default_input_config()
+            .context("failed to get default input config")?
+    } else {
+        device
+            .default_output_config()
+            .context("failed to get default output config")?
+    };
+    Ok((device, config))
+}
+
+pub(crate) fn get_sample_data(
+    sample_format: cpal::SampleFormat,
+    data: &cpal::Data,
+) -> anyhow::Result<Vec<i16>> {
+    match sample_format {
+        cpal::SampleFormat::I8 => Ok(convert_sample_data::<i8, i16>(data)),
+        cpal::SampleFormat::I16 => Ok(data.as_slice::<i16>().unwrap().to_vec()),
+        cpal::SampleFormat::I24 => Ok(convert_sample_data::<cpal::I24, i16>(data)),
+        cpal::SampleFormat::I32 => Ok(convert_sample_data::<i32, i16>(data)),
+        cpal::SampleFormat::I64 => Ok(convert_sample_data::<i64, i16>(data)),
+        cpal::SampleFormat::U8 => Ok(convert_sample_data::<u8, i16>(data)),
+        cpal::SampleFormat::U16 => Ok(convert_sample_data::<u16, i16>(data)),
+        cpal::SampleFormat::U32 => Ok(convert_sample_data::<u32, i16>(data)),
+        cpal::SampleFormat::U64 => Ok(convert_sample_data::<u64, i16>(data)),
+        cpal::SampleFormat::F32 => Ok(convert_sample_data::<f32, i16>(data)),
+        cpal::SampleFormat::F64 => Ok(convert_sample_data::<f64, i16>(data)),
+        _ => anyhow::bail!("Unsupported sample format"),
+    }
+}
+
+pub(crate) fn convert_sample_data<
+    TSource: cpal::SizedSample,
+    TDest: cpal::SizedSample + cpal::FromSample<TSource>,
+>(
+    data: &cpal::Data,
+) -> Vec<TDest> {
+    data.as_slice::<TSource>()
+        .unwrap()
+        .iter()
+        .map(|e| e.to_sample::<TDest>())
+        .collect()
+}

crates/livekit_client/src/livekit_client.rs

@@ -0,0 +1,562 @@
+use anyhow::{Context as _, Result};
+use audio::AudioSettings;
+use collections::HashMap;
+use futures::{SinkExt, channel::mpsc};
+use gpui::{App, AsyncApp, ScreenCaptureSource, ScreenCaptureStream, Task};
+use gpui_tokio::Tokio;
+
+use playback::capture_local_video_track;
+use settings::Settings;
+use std::sync::{Arc, atomic::AtomicU64};
+
+#[cfg(target_os = "linux")]
+mod linux;
+mod playback;
+
+use crate::{ConnectionQuality, LocalTrack, Participant, RemoteTrack, RoomEvent, TrackPublication};
+pub use livekit::SessionStats;
+pub use livekit::webrtc::stats::RtcStats;
+pub use playback::AudioStream;
+pub(crate) use playback::{RemoteVideoFrame, play_remote_video_track};
+
+#[derive(Clone, Debug)]
+pub struct RemoteVideoTrack(livekit::track::RemoteVideoTrack);
+#[derive(Clone, Debug)]
+pub struct RemoteAudioTrack(livekit::track::RemoteAudioTrack);
+#[derive(Clone, Debug)]
+pub struct RemoteTrackPublication(livekit::publication::RemoteTrackPublication);
+#[derive(Clone, Debug)]
+pub struct RemoteParticipant(livekit::participant::RemoteParticipant);
+
+#[derive(Clone, Debug)]
+pub struct LocalVideoTrack(livekit::track::LocalVideoTrack);
+#[derive(Clone, Debug)]
+pub struct LocalAudioTrack(livekit::track::LocalAudioTrack);
+#[derive(Clone, Debug)]
+pub struct LocalTrackPublication(livekit::publication::LocalTrackPublication);
+#[derive(Clone, Debug)]
+pub struct LocalParticipant(livekit::participant::LocalParticipant);
+
+pub struct Room {
+    room: livekit::Room,
+    _task: Task<()>,
+    playback: playback::AudioStack,
+}
+
+pub type TrackSid = livekit::id::TrackSid;
+pub type ConnectionState = livekit::ConnectionState;
+#[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
+pub struct ParticipantIdentity(pub String);
+
+impl Room {
+    pub async fn connect(
+        url: String,
+        token: String,
+        cx: &mut AsyncApp,
+    ) -> Result<(Self, mpsc::UnboundedReceiver<RoomEvent>)> {
+        let mut config = livekit::RoomOptions::default();
+        config.tls_config = livekit::TlsConfig(Some(http_client_tls::tls_config()));
+        let (room, mut events) = Tokio::spawn(cx, async move {
+            livekit::Room::connect(&url, &token, config).await
+        })
+        .await??;
+
+        let (mut tx, rx) = mpsc::unbounded();
+        let task = cx.background_executor().spawn(async move {
+            while let Some(event) = events.recv().await {
+                if let Some(event) = room_event_from_livekit(event) {
+                    tx.send(event).await.ok();
+                }
+            }
+        });
+
+        Ok((
+            Self {
+                room,
+                _task: task,
+                playback: playback::AudioStack::new(cx.background_executor().clone()),
+            },
+            rx,
+        ))
+    }
+
+    pub fn local_participant(&self) -> LocalParticipant {
+        LocalParticipant(self.room.local_participant())
+    }
+
+    pub fn remote_participants(&self) -> HashMap<ParticipantIdentity, RemoteParticipant> {
+        self.room
+            .remote_participants()
+            .into_iter()
+            .map(|(k, v)| (ParticipantIdentity(k.0), RemoteParticipant(v)))
+            .collect()
+    }
+
+    pub fn connection_state(&self) -> ConnectionState {
+        self.room.connection_state()
+    }
+
+    pub fn name(&self) -> String {
+        self.room.name()
+    }
+
+    pub async fn sid(&self) -> String {
+        self.room.sid().await.to_string()
+    }
+
+    pub async fn publish_local_microphone_track(
+        &self,
+        user_name: String,
+        is_staff: bool,
+        cx: &mut AsyncApp,
+    ) -> Result<(LocalTrackPublication, playback::AudioStream, Arc<AtomicU64>)> {
+        let (track, stream, input_lag_us) = self
+            .playback
+            .capture_local_microphone_track(user_name, is_staff, &cx)?;
+        let publication = self
+            .local_participant()
+            .publish_track(
+                livekit::track::LocalTrack::Audio(track.0),
+                livekit::options::TrackPublishOptions {
+                    source: livekit::track::TrackSource::Microphone,
+                    ..Default::default()
+                },
+                cx,
+            )
+            .await?;
+
+        Ok((publication, stream, input_lag_us))
+    }
+
+    pub async fn unpublish_local_track(
+        &self,
+        sid: TrackSid,
+        cx: &mut AsyncApp,
+    ) -> Result<LocalTrackPublication> {
+        self.local_participant().unpublish_track(sid, cx).await
+    }
+
+    pub fn play_remote_audio_track(
+        &self,
+        track: &RemoteAudioTrack,
+        cx: &mut App,
+    ) -> Result<playback::AudioStream> {
+        let output_audio_device = AudioSettings::get_global(cx).output_audio_device.clone();
+        Ok(self
+            .playback
+            .play_remote_audio_track(&track.0, output_audio_device))
+    }
+
+    pub async fn get_stats(&self) -> Result<livekit::SessionStats> {
+        self.room.get_stats().await.map_err(anyhow::Error::from)
+    }
+
+    /// Returns a `Task` that fetches room stats on the Tokio runtime.
+    ///
+    /// LiveKit's SDK is Tokio-based, so the stats fetch must run within
+    /// a Tokio context rather than on GPUI's smol-based background executor.
+    pub fn stats_task(&self, cx: &impl gpui::AppContext) -> Task<Result<livekit::SessionStats>> {
+        let inner = self.room.clone();
+        Tokio::spawn_result(cx, async move {
+            inner.get_stats().await.map_err(anyhow::Error::from)
+        })
+    }
+}
+
+impl LocalParticipant {
+    pub fn connection_quality(&self) -> ConnectionQuality {
+        connection_quality_from_livekit(self.0.connection_quality())
+    }
+
+    pub fn audio_level(&self) -> f32 {
+        self.0.audio_level()
+    }
+
+    pub async fn publish_screenshare_track(
+        &self,
+        source: &dyn ScreenCaptureSource,
+        cx: &mut AsyncApp,
+    ) -> Result<(LocalTrackPublication, Box<dyn ScreenCaptureStream>)> {
+        let (track, stream) = capture_local_video_track(source, cx).await?;
+        let options = livekit::options::TrackPublishOptions {
+            source: livekit::track::TrackSource::Screenshare,
+            video_codec: livekit::options::VideoCodec::VP8,
+            ..Default::default()
+        };
+        let publication = self
+            .publish_track(livekit::track::LocalTrack::Video(track.0), options, cx)
+            .await?;
+
+        Ok((publication, stream))
+    }
+
+    async fn publish_track(
+        &self,
+        track: livekit::track::LocalTrack,
+        options: livekit::options::TrackPublishOptions,
+        cx: &mut AsyncApp,
+    ) -> Result<LocalTrackPublication> {
+        let participant = self.0.clone();
+        Tokio::spawn(cx, async move {
+            participant.publish_track(track, options).await
+        })
+        .await?
+        .map(LocalTrackPublication)
+        .context("publishing a track")
+    }
+
+    pub async fn unpublish_track(
+        &self,
+        sid: TrackSid,
+        cx: &mut AsyncApp,
+    ) -> Result<LocalTrackPublication> {
+        let participant = self.0.clone();
+        Tokio::spawn(cx, async move { participant.unpublish_track(&sid).await })
+            .await?
+            .map(LocalTrackPublication)
+            .context("unpublishing a track")
+    }
+
+    #[cfg(target_os = "linux")]
+    pub async fn publish_screenshare_track_wayland(
+        &self,
+        cx: &mut AsyncApp,
+    ) -> Result<(
+        LocalTrackPublication,
+        Box<dyn ScreenCaptureStream>,
+        futures::channel::oneshot::Receiver<()>,
+    )> {
+        let (track, stop_flag, feed_task, failure_rx) =
+            linux::start_wayland_desktop_capture(cx).await?;
+        let options = livekit::options::TrackPublishOptions {
+            source: livekit::track::TrackSource::Screenshare,
+            video_codec: livekit::options::VideoCodec::VP8,
+            ..Default::default()
+        };
+        let publication = self
+            .publish_track(livekit::track::LocalTrack::Video(track.0), options, cx)
+            .await?;
+
+        Ok((
+            publication,
+            Box::new(linux::WaylandScreenCaptureStream::new(stop_flag, feed_task)),
+            failure_rx,
+        ))
+    }
+}
+
+impl LocalTrackPublication {
+    pub fn mute(&self, cx: &App) {
+        let track = self.0.clone();
+        Tokio::spawn(cx, async move {
+            track.mute();
+        })
+        .detach();
+    }
+
+    pub fn unmute(&self, cx: &App) {
+        let track = self.0.clone();
+        Tokio::spawn(cx, async move {
+            track.unmute();
+        })
+        .detach();
+    }
+
+    pub fn sid(&self) -> TrackSid {
+        self.0.sid()
+    }
+
+    pub fn is_muted(&self) -> bool {
+        self.0.is_muted()
+    }
+}
+
+impl RemoteParticipant {
+    pub fn connection_quality(&self) -> ConnectionQuality {
+        connection_quality_from_livekit(self.0.connection_quality())
+    }
+
+    pub fn audio_level(&self) -> f32 {
+        self.0.audio_level()
+    }
+
+    pub fn identity(&self) -> ParticipantIdentity {
+        ParticipantIdentity(self.0.identity().0)
+    }
+
+    pub fn track_publications(&self) -> HashMap<TrackSid, RemoteTrackPublication> {
+        self.0
+            .track_publications()
+            .into_iter()
+            .map(|(sid, publication)| (sid, RemoteTrackPublication(publication)))
+            .collect()
+    }
+}
+
+impl RemoteAudioTrack {
+    pub fn sid(&self) -> TrackSid {
+        self.0.sid()
+    }
+}
+
+impl RemoteVideoTrack {
+    pub fn sid(&self) -> TrackSid {
+        self.0.sid()
+    }
+}
+
+impl RemoteTrackPublication {
+    pub fn is_muted(&self) -> bool {
+        self.0.is_muted()
+    }
+
+    pub fn is_enabled(&self) -> bool {
+        self.0.is_enabled()
+    }
+
+    pub fn track(&self) -> Option<RemoteTrack> {
+        self.0.track().map(remote_track_from_livekit)
+    }
+
+    pub fn is_audio(&self) -> bool {
+        self.0.kind() == livekit::track::TrackKind::Audio
+    }
+
+    pub fn set_enabled(&self, enabled: bool, cx: &App) {
+        let track = self.0.clone();
+        Tokio::spawn(cx, async move { track.set_enabled(enabled) }).detach();
+    }
+
+    pub fn sid(&self) -> TrackSid {
+        self.0.sid()
+    }
+}
+
+impl Participant {
+    pub fn identity(&self) -> ParticipantIdentity {
+        match self {
+            Participant::Local(local_participant) => {
+                ParticipantIdentity(local_participant.0.identity().0)
+            }
+            Participant::Remote(remote_participant) => {
+                ParticipantIdentity(remote_participant.0.identity().0)
+            }
+        }
+    }
+
+    pub fn connection_quality(&self) -> ConnectionQuality {
+        match self {
+            Participant::Local(local_participant) => local_participant.connection_quality(),
+            Participant::Remote(remote_participant) => remote_participant.connection_quality(),
+        }
+    }
+
+    pub fn audio_level(&self) -> f32 {
+        match self {
+            Participant::Local(local_participant) => local_participant.audio_level(),
+            Participant::Remote(remote_participant) => remote_participant.audio_level(),
+        }
+    }
+}
+
+fn connection_quality_from_livekit(
+    quality: livekit::prelude::ConnectionQuality,
+) -> ConnectionQuality {
+    match quality {
+        livekit::prelude::ConnectionQuality::Excellent => ConnectionQuality::Excellent,
+        livekit::prelude::ConnectionQuality::Good => ConnectionQuality::Good,
+        livekit::prelude::ConnectionQuality::Poor => ConnectionQuality::Poor,
+        livekit::prelude::ConnectionQuality::Lost => ConnectionQuality::Lost,
+    }
+}
+
+fn participant_from_livekit(participant: livekit::participant::Participant) -> Participant {
+    match participant {
+        livekit::participant::Participant::Local(local) => {
+            Participant::Local(LocalParticipant(local))
+        }
+        livekit::participant::Participant::Remote(remote) => {
+            Participant::Remote(RemoteParticipant(remote))
+        }
+    }
+}
+
+fn publication_from_livekit(
+    publication: livekit::publication::TrackPublication,
+) -> TrackPublication {
+    match publication {
+        livekit::publication::TrackPublication::Local(local) => {
+            TrackPublication::Local(LocalTrackPublication(local))
+        }
+        livekit::publication::TrackPublication::Remote(remote) => {
+            TrackPublication::Remote(RemoteTrackPublication(remote))
+        }
+    }
+}
+
+fn remote_track_from_livekit(track: livekit::track::RemoteTrack) -> RemoteTrack {
+    match track {
+        livekit::track::RemoteTrack::Audio(audio) => RemoteTrack::Audio(RemoteAudioTrack(audio)),
+        livekit::track::RemoteTrack::Video(video) => RemoteTrack::Video(RemoteVideoTrack(video)),
+    }
+}
+
+fn local_track_from_livekit(track: livekit::track::LocalTrack) -> LocalTrack {
+    match track {
+        livekit::track::LocalTrack::Audio(audio) => LocalTrack::Audio(LocalAudioTrack(audio)),
+        livekit::track::LocalTrack::Video(video) => LocalTrack::Video(LocalVideoTrack(video)),
+    }
+}
+fn room_event_from_livekit(event: livekit::RoomEvent) -> Option<RoomEvent> {
+    let event = match event {
+        livekit::RoomEvent::ParticipantConnected(remote_participant) => {
+            RoomEvent::ParticipantConnected(RemoteParticipant(remote_participant))
+        }
+        livekit::RoomEvent::ParticipantDisconnected(remote_participant) => {
+            RoomEvent::ParticipantDisconnected(RemoteParticipant(remote_participant))
+        }
+        livekit::RoomEvent::LocalTrackPublished {
+            publication,
+            track,
+            participant,
+        } => RoomEvent::LocalTrackPublished {
+            publication: LocalTrackPublication(publication),
+            track: local_track_from_livekit(track),
+            participant: LocalParticipant(participant),
+        },
+        livekit::RoomEvent::LocalTrackUnpublished {
+            publication,
+            participant,
+        } => RoomEvent::LocalTrackUnpublished {
+            publication: LocalTrackPublication(publication),
+            participant: LocalParticipant(participant),
+        },
+        livekit::RoomEvent::LocalTrackSubscribed { track } => RoomEvent::LocalTrackSubscribed {
+            track: local_track_from_livekit(track),
+        },
+        livekit::RoomEvent::TrackSubscribed {
+            track,
+            publication,
+            participant,
+        } => RoomEvent::TrackSubscribed {
+            track: remote_track_from_livekit(track),
+            publication: RemoteTrackPublication(publication),
+            participant: RemoteParticipant(participant),
+        },
+        livekit::RoomEvent::TrackUnsubscribed {
+            track,
+            publication,
+            participant,
+        } => RoomEvent::TrackUnsubscribed {
+            track: remote_track_from_livekit(track),
+            publication: RemoteTrackPublication(publication),
+            participant: RemoteParticipant(participant),
+        },
+        livekit::RoomEvent::TrackSubscriptionFailed {
+            participant,
+            error: _,
+            track_sid,
+        } => RoomEvent::TrackSubscriptionFailed {
+            participant: RemoteParticipant(participant),
+            track_sid,
+        },
+        livekit::RoomEvent::TrackPublished {
+            publication,
+            participant,
+        } => RoomEvent::TrackPublished {
+            publication: RemoteTrackPublication(publication),
+            participant: RemoteParticipant(participant),
+        },
+        livekit::RoomEvent::TrackUnpublished {
+            publication,
+            participant,
+        } => RoomEvent::TrackUnpublished {
+            publication: RemoteTrackPublication(publication),
+            participant: RemoteParticipant(participant),
+        },
+        livekit::RoomEvent::TrackMuted {
+            participant,
+            publication,
+        } => RoomEvent::TrackMuted {
+            publication: publication_from_livekit(publication),
+            participant: participant_from_livekit(participant),
+        },
+        livekit::RoomEvent::TrackUnmuted {
+            participant,
+            publication,
+        } => RoomEvent::TrackUnmuted {
+            publication: publication_from_livekit(publication),
+            participant: participant_from_livekit(participant),
+        },
+        livekit::RoomEvent::RoomMetadataChanged {
+            old_metadata,
+            metadata,
+        } => RoomEvent::RoomMetadataChanged {
+            old_metadata,
+            metadata,
+        },
+        livekit::RoomEvent::ParticipantMetadataChanged {
+            participant,
+            old_metadata,
+            metadata,
+        } => RoomEvent::ParticipantMetadataChanged {
+            participant: participant_from_livekit(participant),
+            old_metadata,
+            metadata,
+        },
+        livekit::RoomEvent::ParticipantNameChanged {
+            participant,
+            old_name,
+            name,
+        } => RoomEvent::ParticipantNameChanged {
+            participant: participant_from_livekit(participant),
+            old_name,
+            name,
+        },
+        livekit::RoomEvent::ParticipantAttributesChanged {
+            participant,
+            changed_attributes,
+        } => RoomEvent::ParticipantAttributesChanged {
+            participant: participant_from_livekit(participant),
+            changed_attributes: changed_attributes.into_iter().collect(),
+        },
+        livekit::RoomEvent::ActiveSpeakersChanged { speakers } => {
+            RoomEvent::ActiveSpeakersChanged {
+                speakers: speakers.into_iter().map(participant_from_livekit).collect(),
+            }
+        }
+        livekit::RoomEvent::Connected {
+            participants_with_tracks,
+        } => RoomEvent::Connected {
+            participants_with_tracks: participants_with_tracks
+                .into_iter()
+                .map({
+                    |(p, t)| {
+                        (
+                            RemoteParticipant(p),
+                            t.into_iter().map(RemoteTrackPublication).collect(),
+                        )
+                    }
+                })
+                .collect(),
+        },
+        livekit::RoomEvent::Disconnected { reason } => RoomEvent::Disconnected {
+            reason: reason.as_str_name(),
+        },
+        livekit::RoomEvent::Reconnecting => RoomEvent::Reconnecting,
+        livekit::RoomEvent::Reconnected => RoomEvent::Reconnected,
+        livekit::RoomEvent::ConnectionQualityChanged {
+            quality,
+            participant,
+        } => RoomEvent::ConnectionQualityChanged {
+            participant: participant_from_livekit(participant),
+            quality: connection_quality_from_livekit(quality),
+        },
+        _ => {
+            log::trace!("dropping livekit event: {:?}", event);
+            return None;
+        }
+    };
+
+    Some(event)
+}

crates/livekit_client/src/livekit_client/linux.rs

@@ -0,0 +1,203 @@
+use anyhow::Result;
+use futures::StreamExt as _;
+use futures::channel::oneshot;
+use gpui::{AsyncApp, ScreenCaptureStream};
+use livekit::track;
+use livekit::webrtc::{
+    prelude::NV12Buffer,
+    video_frame::{VideoFrame, VideoRotation},
+    video_source::{RtcVideoSource, VideoResolution, native::NativeVideoSource},
+};
+use std::sync::{
+    Arc,
+    atomic::{AtomicBool, AtomicU64, Ordering},
+};
+
+static NEXT_WAYLAND_SHARE_ID: AtomicU64 = AtomicU64::new(1);
+const PIPEWIRE_TIMEOUT_S: u64 = 30;
+
+pub struct WaylandScreenCaptureStream {
+    id: u64,
+    stop_flag: Arc<AtomicBool>,
+    _capture_task: gpui::Task<()>,
+}
+
+impl WaylandScreenCaptureStream {
+    pub fn new(stop_flag: Arc<AtomicBool>, capture_task: gpui::Task<()>) -> Self {
+        Self {
+            id: NEXT_WAYLAND_SHARE_ID.fetch_add(1, Ordering::Relaxed),
+            stop_flag,
+            _capture_task: capture_task,
+        }
+    }
+}
+
+impl ScreenCaptureStream for WaylandScreenCaptureStream {
+    fn metadata(&self) -> Result<gpui::SourceMetadata> {
+        Ok(gpui::SourceMetadata {
+            id: self.id,
+            label: None,
+            is_main: None,
+            resolution: gpui::size(gpui::DevicePixels(1), gpui::DevicePixels(1)),
+        })
+    }
+}
+
+impl Drop for WaylandScreenCaptureStream {
+    fn drop(&mut self) {
+        self.stop_flag.store(true, Ordering::Release);
+    }
+}
+
+pub(crate) async fn start_wayland_desktop_capture(
+    cx: &mut AsyncApp,
+) -> Result<(
+    crate::LocalVideoTrack,
+    Arc<AtomicBool>,
+    gpui::Task<()>,
+    oneshot::Receiver<()>,
+)> {
+    use futures::channel::mpsc;
+    use gpui::FutureExt as _;
+    use libwebrtc::desktop_capturer::{
+        CaptureError, DesktopCaptureSourceType, DesktopCapturer, DesktopCapturerOptions,
+        DesktopFrame,
+    };
+    use libwebrtc::native::yuv_helper::argb_to_nv12;
+    use std::time::Duration;
+    use webrtc_sys::webrtc::ffi as webrtc_ffi;
+
+    fn webrtc_log_callback(message: String, severity: webrtc_ffi::LoggingSeverity) {
+        match severity {
+            webrtc_ffi::LoggingSeverity::Error => log::error!("[webrtc] {}", message.trim()),
+            _ => log::debug!("[webrtc] {}", message.trim()),
+        }
+    }
+
+    let _webrtc_log_sink = webrtc_ffi::new_log_sink(webrtc_log_callback);
+    log::debug!("Wayland desktop capture: WebRTC internal logging enabled");
+
+    let stop_flag = Arc::new(AtomicBool::new(false));
+    let (mut video_source_tx, mut video_source_rx) = mpsc::channel::<NativeVideoSource>(1);
+    let (failure_tx, failure_rx) = oneshot::channel::<()>();
+
+    let mut options = DesktopCapturerOptions::new(DesktopCaptureSourceType::Generic);
+    options.set_include_cursor(true);
+    let mut capturer = DesktopCapturer::new(options).ok_or_else(|| {
+        anyhow::anyhow!(
+            "Failed to create desktop capturer. \
+             Check that xdg-desktop-portal is installed and running."
+        )
+    })?;
+
+    let permanent_error = Arc::new(AtomicBool::new(false));
+    let stop_cb = stop_flag.clone();
+    let permanent_error_cb = permanent_error.clone();
+    capturer.start_capture(None, {
+        let mut video_source: Option<NativeVideoSource> = None;
+        let mut current_width: u32 = 0;
+        let mut current_height: u32 = 0;
+        let mut video_frame = VideoFrame {
+            rotation: VideoRotation::VideoRotation0,
+            buffer: NV12Buffer::new(1, 1),
+            timestamp_us: 0,
+        };
+
+        move |result: Result<DesktopFrame, CaptureError>| {
+            let frame = match result {
+                Ok(frame) => frame,
+                Err(CaptureError::Temporary) => return,
+                Err(CaptureError::Permanent) => {
+                    log::error!("Wayland desktop capture encountered a permanent error");
+                    permanent_error_cb.store(true, Ordering::Release);
+                    stop_cb.store(true, Ordering::Release);
+                    return;
+                }
+            };
+
+            let width = frame.width() as u32;
+            let height = frame.height() as u32;
+            if width != current_width || height != current_height {
+                current_width = width;
+                current_height = height;
+                video_frame.buffer = NV12Buffer::new(width, height);
+            }
+
+            let (stride_y, stride_uv) = video_frame.buffer.strides();
+            let (data_y, data_uv) = video_frame.buffer.data_mut();
+            argb_to_nv12(
+                frame.data(),
+                frame.stride(),
+                data_y,
+                stride_y,
+                data_uv,
+                stride_uv,
+                width as i32,
+                height as i32,
+            );
+
+            if let Some(source) = &video_source {
+                source.capture_frame(&video_frame);
+            } else {
+                let source = NativeVideoSource::new(VideoResolution { width, height }, true);
+                source.capture_frame(&video_frame);
+                video_source_tx.try_send(source.clone()).ok();
+                video_source = Some(source);
+            }
+        }
+    });
+
+    log::info!("Wayland desktop capture: starting capture loop");
+
+    let stop = stop_flag.clone();
+    let tokio_task = gpui_tokio::Tokio::spawn(cx, async move {
+        loop {
+            if stop.load(Ordering::Acquire) {
+                break;
+            }
+            capturer.capture_frame();
+            tokio::time::sleep(Duration::from_millis(33)).await;
+        }
+        drop(capturer);
+
+        if permanent_error.load(Ordering::Acquire) {
+            log::error!("Wayland screen capture ended due to a permanent capture error");
+            let _ = failure_tx.send(());
+        }
+    });
+
+    let capture_task = cx.background_executor().spawn(async move {
+        if let Err(error) = tokio_task.await {
+            log::error!("Wayland capture task failed: {error}");
+        }
+    });
+
+    let executor = cx.background_executor().clone();
+    let video_source = video_source_rx
+        .next()
+        .with_timeout(Duration::from_secs(PIPEWIRE_TIMEOUT_S), &executor)
+        .await
+        .map_err(|_| {
+            stop_flag.store(true, Ordering::Relaxed);
+            log::error!("Wayland desktop capture timed out.");
+            anyhow::anyhow!(
+                "Screen sharing timed out waiting for the first frame. \
+                 Check that xdg-desktop-portal and PipeWire are running, \
+                 and that your portal backend matches your compositor."
+            )
+        })?
+        .ok_or_else(|| {
+            stop_flag.store(true, Ordering::Relaxed);
+            anyhow::anyhow!(
+                "Screen sharing was canceled or the portal denied permission. \
+                 You can try again from the screen share button."
+            )
+        })?;
+
+    let track = super::LocalVideoTrack(track::LocalVideoTrack::create_video_track(
+        "screen share",
+        RtcVideoSource::Native(video_source),
+    ));
+
+    Ok((track, stop_flag, capture_task, failure_rx))
+}

crates/livekit_client/src/mock_client.rs

@@ -0,0 +1,39 @@
+use crate::test;
+
+pub(crate) mod participant;
+pub(crate) mod publication;
+pub(crate) mod track;
+
+pub type RemoteVideoTrack = track::RemoteVideoTrack;
+pub type RemoteAudioTrack = track::RemoteAudioTrack;
+pub type RemoteTrackPublication = publication::RemoteTrackPublication;
+pub type RemoteParticipant = participant::RemoteParticipant;
+
+pub type LocalVideoTrack = track::LocalVideoTrack;
+pub type LocalAudioTrack = track::LocalAudioTrack;
+pub type LocalTrackPublication = publication::LocalTrackPublication;
+pub type LocalParticipant = participant::LocalParticipant;
+
+pub type Room = test::Room;
+pub use test::{ConnectionState, ParticipantIdentity, RtcStats, SessionStats, TrackSid};
+
+pub struct AudioStream {}
+
+#[cfg(not(target_os = "macos"))]
+pub type RemoteVideoFrame = std::sync::Arc<gpui::RenderImage>;
+
+#[cfg(target_os = "macos")]
+#[derive(Clone)]
+pub(crate) struct RemoteVideoFrame {}
+#[cfg(target_os = "macos")]
+impl Into<gpui::SurfaceSource> for RemoteVideoFrame {
+    fn into(self) -> gpui::SurfaceSource {
+        unimplemented!()
+    }
+}
+pub(crate) fn play_remote_video_track(
+    _track: &crate::RemoteVideoTrack,
+    _: &gpui::BackgroundExecutor,
+) -> impl futures::Stream<Item = RemoteVideoFrame> + use<> {
+    futures::stream::pending()
+}

crates/livekit_client/src/mock_client/participant.rs

@@ -0,0 +1,222 @@
+use crate::{
+    AudioStream, ConnectionQuality, LocalAudioTrack, LocalTrackPublication, LocalVideoTrack,
+    Participant, ParticipantIdentity, RemoteTrack, RemoteTrackPublication, TrackSid,
+    test::{Room, WeakRoom},
+};
+use anyhow::Result;
+use collections::HashMap;
+use gpui::{
+    AsyncApp, DevicePixels, ScreenCaptureSource, ScreenCaptureStream, SourceMetadata, size,
+};
+use std::sync::{Arc, atomic::AtomicU64};
+
+#[derive(Clone, Debug)]
+pub struct LocalParticipant {
+    pub(crate) identity: ParticipantIdentity,
+    pub(crate) room: Room,
+}
+
+#[derive(Clone, Debug)]
+pub struct RemoteParticipant {
+    pub(crate) identity: ParticipantIdentity,
+    pub(crate) room: WeakRoom,
+}
+
+impl Participant {
+    pub fn identity(&self) -> ParticipantIdentity {
+        match self {
+            Participant::Local(participant) => participant.identity.clone(),
+            Participant::Remote(participant) => participant.identity.clone(),
+        }
+    }
+
+    pub fn connection_quality(&self) -> ConnectionQuality {
+        match self {
+            Participant::Local(p) => p.connection_quality(),
+            Participant::Remote(p) => p.connection_quality(),
+        }
+    }
+
+    pub fn audio_level(&self) -> f32 {
+        match self {
+            Participant::Local(p) => p.audio_level(),
+            Participant::Remote(p) => p.audio_level(),
+        }
+    }
+}
+
+impl LocalParticipant {
+    pub fn connection_quality(&self) -> ConnectionQuality {
+        ConnectionQuality::Excellent
+    }
+
+    pub fn audio_level(&self) -> f32 {
+        0.0
+    }
+
+    pub async fn unpublish_track(&self, track: TrackSid, _cx: &AsyncApp) -> Result<()> {
+        self.room
+            .test_server()
+            .unpublish_track(self.room.token(), &track)
+            .await
+    }
+
+    pub(crate) async fn publish_microphone_track(
+        &self,
+        _cx: &AsyncApp,
+    ) -> Result<(LocalTrackPublication, AudioStream, Arc<AtomicU64>)> {
+        let this = self.clone();
+        let server = this.room.test_server();
+        let sid = server
+            .publish_audio_track(this.room.token(), &LocalAudioTrack {})
+            .await?;
+
+        Ok((
+            LocalTrackPublication {
+                room: self.room.downgrade(),
+                sid,
+            },
+            AudioStream {},
+            Arc::new(AtomicU64::new(0)),
+        ))
+    }
+
+    pub async fn publish_screenshare_track(
+        &self,
+        _source: &dyn ScreenCaptureSource,
+        _cx: &mut AsyncApp,
+    ) -> Result<(LocalTrackPublication, Box<dyn ScreenCaptureStream>)> {
+        let this = self.clone();
+        let server = this.room.test_server();
+        let sid = server
+            .publish_video_track(this.room.token(), LocalVideoTrack {})
+            .await?;
+        Ok((
+            LocalTrackPublication {
+                room: self.room.downgrade(),
+                sid,
+            },
+            Box::new(TestScreenCaptureStream {}),
+        ))
+    }
+
+    #[cfg(target_os = "linux")]
+    pub async fn publish_screenshare_track_wayland(
+        &self,
+        _cx: &mut AsyncApp,
+    ) -> Result<(
+        LocalTrackPublication,
+        Box<dyn ScreenCaptureStream>,
+        futures::channel::oneshot::Receiver<()>,
+    )> {
+        let (_failure_tx, failure_rx) = futures::channel::oneshot::channel();
+        let this = self.clone();
+        let server = this.room.test_server();
+        let sid = server
+            .publish_video_track(this.room.token(), LocalVideoTrack {})
+            .await?;
+        Ok((
+            LocalTrackPublication {
+                room: self.room.downgrade(),
+                sid,
+            },
+            Box::new(TestWaylandScreenCaptureStream::new()),
+            failure_rx,
+        ))
+    }
+}
+
+impl RemoteParticipant {
+    pub fn connection_quality(&self) -> ConnectionQuality {
+        ConnectionQuality::Excellent
+    }
+
+    pub fn audio_level(&self) -> f32 {
+        0.0
+    }
+
+    pub fn track_publications(&self) -> HashMap<TrackSid, RemoteTrackPublication> {
+        if let Some(room) = self.room.upgrade() {
+            let server = room.test_server();
+            let audio = server
+                .audio_tracks(room.token())
+                .unwrap()
+                .into_iter()
+                .filter(|track| track.publisher_id() == self.identity)
+                .map(|track| {
+                    (
+                        track.sid(),
+                        RemoteTrackPublication {
+                            sid: track.sid(),
+                            room: self.room.clone(),
+                            track: RemoteTrack::Audio(track),
+                        },
+                    )
+                });
+            let video = server
+                .video_tracks(room.token())
+                .unwrap()
+                .into_iter()
+                .filter(|track| track.publisher_id() == self.identity)
+                .map(|track| {
+                    (
+                        track.sid(),
+                        RemoteTrackPublication {
+                            sid: track.sid(),
+                            room: self.room.clone(),
+                            track: RemoteTrack::Video(track),
+                        },
+                    )
+                });
+            audio.chain(video).collect()
+        } else {
+            HashMap::default()
+        }
+    }
+
+    pub fn identity(&self) -> ParticipantIdentity {
+        self.identity.clone()
+    }
+}
+
+struct TestScreenCaptureStream;
+
+impl ScreenCaptureStream for TestScreenCaptureStream {
+    fn metadata(&self) -> Result<SourceMetadata> {
+        Ok(SourceMetadata {
+            id: 0,
+            is_main: None,
+            label: None,
+            resolution: size(DevicePixels(1), DevicePixels(1)),
+        })
+    }
+}
+
+#[cfg(target_os = "linux")]
+static NEXT_TEST_WAYLAND_SHARE_ID: AtomicU64 = AtomicU64::new(1);
+
+#[cfg(target_os = "linux")]
+struct TestWaylandScreenCaptureStream {
+    id: u64,
+}
+
+#[cfg(target_os = "linux")]
+impl TestWaylandScreenCaptureStream {
+    fn new() -> Self {
+        Self {
+            id: NEXT_TEST_WAYLAND_SHARE_ID.fetch_add(1, std::sync::atomic::Ordering::Relaxed),
+        }
+    }
+}
+
+#[cfg(target_os = "linux")]
+impl ScreenCaptureStream for TestWaylandScreenCaptureStream {
+    fn metadata(&self) -> Result<SourceMetadata> {
+        Ok(SourceMetadata {
+            id: self.id,
+            is_main: None,
+            label: None,
+            resolution: size(DevicePixels(1), DevicePixels(1)),
+        })
+    }
+}

crates/livekit_client/src/mock_client/publication.rs

@@ -0,0 +1,91 @@
+use gpui::App;
+
+use crate::{RemoteTrack, TrackSid, test::WeakRoom};
+
+#[derive(Clone, Debug)]
+pub struct LocalTrackPublication {
+    pub(crate) sid: TrackSid,
+    pub(crate) room: WeakRoom,
+}
+
+#[derive(Clone, Debug)]
+pub struct RemoteTrackPublication {
+    pub(crate) sid: TrackSid,
+    pub(crate) room: WeakRoom,
+    pub(crate) track: RemoteTrack,
+}
+
+impl LocalTrackPublication {
+    pub fn sid(&self) -> TrackSid {
+        self.sid.clone()
+    }
+
+    pub fn mute(&self, _cx: &App) {
+        self.set_mute(true)
+    }
+
+    pub fn unmute(&self, _cx: &App) {
+        self.set_mute(false)
+    }
+
+    fn set_mute(&self, mute: bool) {
+        if let Some(room) = self.room.upgrade() {
+            room.test_server()
+                .set_track_muted(&room.token(), &self.sid, mute)
+                .ok();
+        }
+    }
+
+    pub fn is_muted(&self) -> bool {
+        if let Some(room) = self.room.upgrade() {
+            room.test_server()
+                .is_track_muted(&room.token(), &self.sid)
+                .unwrap_or(false)
+        } else {
+            false
+        }
+    }
+}
+
+impl RemoteTrackPublication {
+    pub fn sid(&self) -> TrackSid {
+        self.sid.clone()
+    }
+
+    pub fn track(&self) -> Option<RemoteTrack> {
+        Some(self.track.clone())
+    }
+
+    pub fn is_audio(&self) -> bool {
+        matches!(self.track, RemoteTrack::Audio(_))
+    }
+
+    pub fn is_muted(&self) -> bool {
+        if let Some(room) = self.room.upgrade() {
+            room.test_server()
+                .is_track_muted(&room.token(), &self.sid)
+                .unwrap_or(false)
+        } else {
+            false
+        }
+    }
+
+    pub fn is_enabled(&self) -> bool {
+        if let Some(room) = self.room.upgrade() {
+            !room.0.lock().paused_audio_tracks.contains(&self.sid)
+        } else {
+            false
+        }
+    }
+
+    pub fn set_enabled(&self, enabled: bool, _cx: &App) {
+        if let Some(room) = self.room.upgrade() {
+            let paused_audio_tracks = &mut room.0.lock().paused_audio_tracks;
+            if enabled {
+                paused_audio_tracks.remove(&self.sid);
+            } else {
+                paused_audio_tracks.insert(self.sid.clone());
+            }
+        }
+    }
+}

crates/livekit_client/src/mock_client/track.rs

@@ -0,0 +1,56 @@
+use std::sync::Arc;
+
+use crate::{
+    ParticipantIdentity, TrackSid,
+    test::{TestServerAudioTrack, TestServerVideoTrack, WeakRoom},
+};
+
+#[derive(Clone, Debug)]
+pub struct LocalVideoTrack {}
+
+#[derive(Clone, Debug)]
+pub struct LocalAudioTrack {}
+
+#[derive(Clone, Debug)]
+pub struct RemoteVideoTrack {
+    pub(crate) server_track: Arc<TestServerVideoTrack>,
+    pub(crate) _room: WeakRoom,
+}
+
+#[derive(Clone, Debug)]
+pub struct RemoteAudioTrack {
+    pub(crate) server_track: Arc<TestServerAudioTrack>,
+    pub(crate) room: WeakRoom,
+}
+
+impl RemoteAudioTrack {
+    pub fn sid(&self) -> TrackSid {
+        self.server_track.sid.clone()
+    }
+
+    pub fn publisher_id(&self) -> ParticipantIdentity {
+        self.server_track.publisher_id.clone()
+    }
+
+    pub fn enabled(&self) -> bool {
+        if let Some(room) = self.room.upgrade() {
+            !room
+                .0
+                .lock()
+                .paused_audio_tracks
+                .contains(&self.server_track.sid)
+        } else {
+            false
+        }
+    }
+}
+
+impl RemoteVideoTrack {
+    pub fn sid(&self) -> TrackSid {
+        self.server_track.sid.clone()
+    }
+
+    pub fn publisher_id(&self) -> ParticipantIdentity {
+        self.server_track.publisher_id.clone()
+    }
+}

crates/livekit_client/src/record.rs

@@ -0,0 +1,102 @@
+use std::{
+    env,
+    num::NonZero,
+    path::{Path, PathBuf},
+    sync::{Arc, Mutex},
+    time::Duration,
+};
+
+use anyhow::{Context, Result};
+use cpal::DeviceId;
+use cpal::traits::{DeviceTrait, StreamTrait};
+use rodio::{buffer::SamplesBuffer, conversions::SampleTypeConverter};
+use util::ResultExt;
+
+pub struct CaptureInput {
+    pub name: String,
+    pub input_device: Option<DeviceId>,
+    config: cpal::SupportedStreamConfig,
+    samples: Arc<Mutex<Vec<i16>>>,
+    _stream: cpal::Stream,
+}
+
+impl CaptureInput {
+    pub fn start(input_device: Option<DeviceId>) -> anyhow::Result<Self> {
+        let (device, config) = crate::default_device(true, input_device.as_ref())?;
+        let name = device
+            .description()
+            .map(|desc| desc.name().to_string())
+            .unwrap_or("<unknown>".to_string());
+        log::info!("Using microphone: {}", name);
+
+        let samples = Arc::new(Mutex::new(Vec::new()));
+        let stream = start_capture(device, config.clone(), samples.clone())?;
+
+        Ok(Self {
+            name,
+            input_device,
+            _stream: stream,
+            config,
+            samples,
+        })
+    }
+
+    pub fn finish(self) -> Result<PathBuf> {
+        let name = self.name;
+        let mut path = env::current_dir().context("Could not get current dir")?;
+        path.push(&format!("test_recording_{name}.wav"));
+        log::info!("Test recording written to: {}", path.display());
+        write_out(self.samples, self.config, &path)?;
+        Ok(path)
+    }
+}
+
+fn start_capture(
+    device: cpal::Device,
+    config: cpal::SupportedStreamConfig,
+    samples: Arc<Mutex<Vec<i16>>>,
+) -> Result<cpal::Stream> {
+    let stream = device
+        .build_input_stream_raw(
+            &config.config(),
+            config.sample_format(),
+            move |data, _: &_| {
+                let data = crate::get_sample_data(config.sample_format(), data).log_err();
+                let Some(data) = data else {
+                    return;
+                };
+                samples
+                    .try_lock()
+                    .expect("Only locked after stream ends")
+                    .extend_from_slice(&data);
+            },
+            |err| log::error!("error capturing audio track: {:?}", err),
+            Some(Duration::from_millis(100)),
+        )
+        .context("failed to build input stream")?;
+
+    stream.play()?;
+    Ok(stream)
+}
+
+fn write_out(
+    samples: Arc<Mutex<Vec<i16>>>,
+    config: cpal::SupportedStreamConfig,
+    path: &Path,
+) -> Result<()> {
+    let samples = std::mem::take(
+        &mut *samples
+            .try_lock()
+            .expect("Stream has ended, callback cant hold the lock"),
+    );
+    let samples: Vec<f32> = SampleTypeConverter::<_, f32>::new(samples.into_iter()).collect();
+    let mut samples = SamplesBuffer::new(
+        NonZero::new(config.channels()).expect("config channel is never zero"),
+        NonZero::new(config.sample_rate()).expect("config sample_rate is never zero"),
+        samples,
+    );
+    match rodio::wav_to_file(&mut samples, path) {
+        Ok(_) => Ok(()),
+        Err(e) => Err(anyhow::anyhow!("Failed to write wav file: {}", e)),
+    }
+}

crates/livekit_client/src/remote_video_track_view.rs

@@ -0,0 +1,109 @@
+use super::RemoteVideoTrack;
+use futures::StreamExt as _;
+use gpui::{
+    AppContext as _, Context, Empty, Entity, EventEmitter, IntoElement, Render, Task, Window,
+};
+
+pub struct RemoteVideoTrackView {
+    track: RemoteVideoTrack,
+    latest_frame: Option<crate::RemoteVideoFrame>,
+    #[cfg(not(target_os = "macos"))]
+    current_rendered_frame: Option<crate::RemoteVideoFrame>,
+    #[cfg(not(target_os = "macos"))]
+    previous_rendered_frame: Option<crate::RemoteVideoFrame>,
+    _maintain_frame: Task<()>,
+}
+
+#[derive(Debug)]
+pub enum RemoteVideoTrackViewEvent {
+    Close,
+}
+
+impl RemoteVideoTrackView {
+    pub fn new(track: RemoteVideoTrack, window: &mut Window, cx: &mut Context<Self>) -> Self {
+        cx.focus_handle();
+        let frames = crate::play_remote_video_track(&track, cx.background_executor());
+
+        #[cfg(not(target_os = "macos"))]
+        {
+            use util::ResultExt;
+
+            let window_handle = window.window_handle();
+            cx.on_release(move |this, cx| {
+                if let Some(frame) = this.previous_rendered_frame.take() {
+                    window_handle
+                        .update(cx, |_, window, _cx| window.drop_image(frame).log_err())
+                        .ok();
+                }
+                if let Some(frame) = this.current_rendered_frame.take() {
+                    window_handle
+                        .update(cx, |_, window, _cx| window.drop_image(frame).log_err())
+                        .ok();
+                }
+            })
+            .detach();
+        }
+
+        Self {
+            track,
+            latest_frame: None,
+            _maintain_frame: cx.spawn_in(window, async move |this, cx| {
+                futures::pin_mut!(frames);
+                while let Some(frame) = frames.next().await {
+                    this.update(cx, |this, cx| {
+                        this.latest_frame = Some(frame);
+                        cx.notify();
+                    })
+                    .ok();
+                }
+                this.update(cx, |_this, cx| cx.emit(RemoteVideoTrackViewEvent::Close))
+                    .ok();
+            }),
+            #[cfg(not(target_os = "macos"))]
+            current_rendered_frame: None,
+            #[cfg(not(target_os = "macos"))]
+            previous_rendered_frame: None,
+        }
+    }
+
+    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Self> {
+        cx.new(|cx| Self::new(self.track.clone(), window, cx))
+    }
+}
+
+impl EventEmitter<RemoteVideoTrackViewEvent> for RemoteVideoTrackView {}
+
+impl Render for RemoteVideoTrackView {
+    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
+        #[cfg(target_os = "macos")]
+        if let Some(latest_frame) = &self.latest_frame {
+            use gpui::Styled as _;
+            return gpui::surface(latest_frame.clone())
+                .size_full()
+                .into_any_element();
+        }
+
+        #[cfg(not(target_os = "macos"))]
+        if let Some(latest_frame) = &self.latest_frame {
+            use gpui::Styled as _;
+            if let Some(current_rendered_frame) = self.current_rendered_frame.take() {
+                if let Some(frame) = self.previous_rendered_frame.take() {
+                    // Only drop the frame if it's not also the current frame.
+                    if frame.id != current_rendered_frame.id {
+                        use util::ResultExt as _;
+                        _window.drop_image(frame).log_err();
+                    }
+                }
+                self.previous_rendered_frame = Some(current_rendered_frame)
+            }
+            self.current_rendered_frame = Some(latest_frame.clone());
+            use gpui::ParentElement;
+            return ui::h_flex()
+                .size_full()
+                .child(gpui::img(latest_frame.clone()).size_full())
+                .into_any_element();
+        }
+
+        Empty.into_any_element()
+    }
+}

crates/livekit_client/src/test.rs

@@ -0,0 +1,855 @@
+use crate::{AudioStream, Participant, RemoteTrack, RoomEvent, TrackPublication};
+
+use crate::mock_client::{participant::*, publication::*, track::*};
+use anyhow::{Context as _, Result};
+use async_trait::async_trait;
+use collections::{BTreeMap, HashMap, HashSet, btree_map::Entry as BTreeEntry, hash_map::Entry};
+use gpui::{App, AsyncApp, BackgroundExecutor};
+use livekit_api::{proto, token};
+use parking_lot::Mutex;
+use postage::{mpsc, sink::Sink};
+use std::sync::{
+    Arc, Weak,
+    atomic::{AtomicBool, AtomicU64, Ordering::SeqCst},
+};
+
+#[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
+pub struct ParticipantIdentity(pub String);
+
+#[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
+pub struct TrackSid(pub(crate) String);
+
+impl std::fmt::Display for TrackSid {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+impl TryFrom<String> for TrackSid {
+    type Error = anyhow::Error;
+
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        Ok(TrackSid(value))
+    }
+}
+
+#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
+#[non_exhaustive]
+pub enum ConnectionState {
+    Connected,
+    Disconnected,
+}
+
+#[derive(Clone, Debug, Default)]
+pub struct SessionStats {
+    pub publisher_stats: Vec<RtcStats>,
+    pub subscriber_stats: Vec<RtcStats>,
+}
+
+#[derive(Clone, Debug)]
+pub enum RtcStats {}
+
+static SERVERS: Mutex<BTreeMap<String, Arc<TestServer>>> = Mutex::new(BTreeMap::new());
+
+pub struct TestServer {
+    pub url: String,
+    pub api_key: String,
+    pub secret_key: String,
+    rooms: Mutex<HashMap<String, TestServerRoom>>,
+    executor: BackgroundExecutor,
+}
+
+impl TestServer {
+    pub fn create(
+        url: String,
+        api_key: String,
+        secret_key: String,
+        executor: BackgroundExecutor,
+    ) -> Result<Arc<TestServer>> {
+        let mut servers = SERVERS.lock();
+        if let BTreeEntry::Vacant(e) = servers.entry(url.clone()) {
+            let server = Arc::new(TestServer {
+                url,
+                api_key,
+                secret_key,
+                rooms: Default::default(),
+                executor,
+            });
+            e.insert(server.clone());
+            Ok(server)
+        } else {
+            anyhow::bail!("a server with url {url:?} already exists");
+        }
+    }
+
+    fn get(url: &str) -> Result<Arc<TestServer>> {
+        Ok(SERVERS
+            .lock()
+            .get(url)
+            .context("no server found for url")?
+            .clone())
+    }
+
+    pub fn teardown(&self) -> Result<()> {
+        SERVERS
+            .lock()
+            .remove(&self.url)
+            .with_context(|| format!("server with url {:?} does not exist", self.url))?;
+        Ok(())
+    }
+
+    pub fn create_api_client(&self) -> TestApiClient {
+        TestApiClient {
+            url: self.url.clone(),
+        }
+    }
+
+    pub async fn create_room(&self, room: String) -> Result<()> {
+        self.simulate_random_delay().await;
+
+        let mut server_rooms = self.rooms.lock();
+        if let Entry::Vacant(e) = server_rooms.entry(room.clone()) {
+            e.insert(Default::default());
+            Ok(())
+        } else {
+            anyhow::bail!("{room:?} already exists");
+        }
+    }
+
+    async fn delete_room(&self, room: String) -> Result<()> {
+        self.simulate_random_delay().await;
+
+        let mut server_rooms = self.rooms.lock();
+        server_rooms
+            .remove(&room)
+            .with_context(|| format!("room {room:?} does not exist"))?;
+        Ok(())
+    }
+
+    async fn join_room(&self, token: String, client_room: Room) -> Result<ParticipantIdentity> {
+        self.simulate_random_delay().await;
+
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let room_name = claims.video.room.unwrap();
+        let mut server_rooms = self.rooms.lock();
+        let room = (*server_rooms).entry(room_name.to_string()).or_default();
+
+        if let Entry::Vacant(e) = room.client_rooms.entry(identity.clone()) {
+            for server_track in &room.video_tracks {
+                let track = RemoteTrack::Video(RemoteVideoTrack {
+                    server_track: server_track.clone(),
+                    _room: client_room.downgrade(),
+                });
+                client_room
+                    .0
+                    .lock()
+                    .updates_tx
+                    .blocking_send(RoomEvent::TrackSubscribed {
+                        track: track.clone(),
+                        publication: RemoteTrackPublication {
+                            sid: server_track.sid.clone(),
+                            room: client_room.downgrade(),
+                            track,
+                        },
+                        participant: RemoteParticipant {
+                            room: client_room.downgrade(),
+                            identity: server_track.publisher_id.clone(),
+                        },
+                    })
+                    .unwrap();
+            }
+            for server_track in &room.audio_tracks {
+                let track = RemoteTrack::Audio(RemoteAudioTrack {
+                    server_track: server_track.clone(),
+                    room: client_room.downgrade(),
+                });
+                client_room
+                    .0
+                    .lock()
+                    .updates_tx
+                    .blocking_send(RoomEvent::TrackSubscribed {
+                        track: track.clone(),
+                        publication: RemoteTrackPublication {
+                            sid: server_track.sid.clone(),
+                            room: client_room.downgrade(),
+                            track,
+                        },
+                        participant: RemoteParticipant {
+                            room: client_room.downgrade(),
+                            identity: server_track.publisher_id.clone(),
+                        },
+                    })
+                    .unwrap();
+            }
+            e.insert(client_room);
+            Ok(identity)
+        } else {
+            anyhow::bail!("{identity:?} attempted to join room {room_name:?} twice");
+        }
+    }
+
+    async fn leave_room(&self, token: String) -> Result<()> {
+        self.simulate_random_delay().await;
+
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let room_name = claims.video.room.unwrap();
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name:?} does not exist"))?;
+        room.client_rooms.remove(&identity).with_context(|| {
+            format!("{identity:?} attempted to leave room {room_name:?} before joining it")
+        })?;
+        Ok(())
+    }
+
+    fn remote_participants(
+        &self,
+        token: String,
+    ) -> Result<HashMap<ParticipantIdentity, RemoteParticipant>> {
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let local_identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let room_name = claims.video.room.unwrap().to_string();
+
+        if let Some(server_room) = self.rooms.lock().get(&room_name) {
+            let room = server_room
+                .client_rooms
+                .get(&local_identity)
+                .unwrap()
+                .downgrade();
+            Ok(server_room
+                .client_rooms
+                .iter()
+                .filter(|(identity, _)| *identity != &local_identity)
+                .map(|(identity, _)| {
+                    (
+                        identity.clone(),
+                        RemoteParticipant {
+                            room: room.clone(),
+                            identity: identity.clone(),
+                        },
+                    )
+                })
+                .collect())
+        } else {
+            Ok(Default::default())
+        }
+    }
+
+    async fn remove_participant(
+        &self,
+        room_name: String,
+        identity: ParticipantIdentity,
+    ) -> Result<()> {
+        self.simulate_random_delay().await;
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+        room.client_rooms
+            .remove(&identity)
+            .with_context(|| format!("participant {identity:?} did not join room {room_name:?}"))?;
+        Ok(())
+    }
+
+    async fn update_participant(
+        &self,
+        room_name: String,
+        identity: String,
+        permission: proto::ParticipantPermission,
+    ) -> Result<()> {
+        self.simulate_random_delay().await;
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+        room.participant_permissions
+            .insert(ParticipantIdentity(identity), permission);
+        Ok(())
+    }
+
+    pub async fn disconnect_client(&self, client_identity: String) {
+        let client_identity = ParticipantIdentity(client_identity);
+
+        self.simulate_random_delay().await;
+
+        let mut server_rooms = self.rooms.lock();
+        for room in server_rooms.values_mut() {
+            if let Some(room) = room.client_rooms.remove(&client_identity) {
+                let mut room = room.0.lock();
+                room.connection_state = ConnectionState::Disconnected;
+                room.updates_tx
+                    .blocking_send(RoomEvent::Disconnected {
+                        reason: "SIGNAL_CLOSED",
+                    })
+                    .ok();
+            }
+        }
+    }
+
+    pub(crate) async fn publish_video_track(
+        &self,
+        token: String,
+        _local_track: LocalVideoTrack,
+    ) -> Result<TrackSid> {
+        self.simulate_random_delay().await;
+
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let room_name = claims.video.room.unwrap();
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+
+        let can_publish = room
+            .participant_permissions
+            .get(&identity)
+            .map(|permission| permission.can_publish)
+            .or(claims.video.can_publish)
+            .unwrap_or(true);
+
+        anyhow::ensure!(can_publish, "user is not allowed to publish");
+
+        let sid: TrackSid = format!("TR_{}", nanoid::nanoid!(17)).try_into().unwrap();
+        let server_track = Arc::new(TestServerVideoTrack {
+            sid: sid.clone(),
+            publisher_id: identity.clone(),
+        });
+
+        room.video_tracks.push(server_track.clone());
+
+        for (room_identity, client_room) in &room.client_rooms {
+            if *room_identity != identity {
+                let track = RemoteTrack::Video(RemoteVideoTrack {
+                    server_track: server_track.clone(),
+                    _room: client_room.downgrade(),
+                });
+                let publication = RemoteTrackPublication {
+                    sid: sid.clone(),
+                    room: client_room.downgrade(),
+                    track: track.clone(),
+                };
+                let participant = RemoteParticipant {
+                    identity: identity.clone(),
+                    room: client_room.downgrade(),
+                };
+                client_room
+                    .0
+                    .lock()
+                    .updates_tx
+                    .blocking_send(RoomEvent::TrackSubscribed {
+                        track,
+                        publication,
+                        participant,
+                    })
+                    .unwrap();
+            }
+        }
+
+        Ok(sid)
+    }
+
+    pub(crate) async fn publish_audio_track(
+        &self,
+        token: String,
+        _local_track: &LocalAudioTrack,
+    ) -> Result<TrackSid> {
+        self.simulate_random_delay().await;
+
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let room_name = claims.video.room.unwrap();
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+
+        let can_publish = room
+            .participant_permissions
+            .get(&identity)
+            .map(|permission| permission.can_publish)
+            .or(claims.video.can_publish)
+            .unwrap_or(true);
+
+        anyhow::ensure!(can_publish, "user is not allowed to publish");
+
+        let sid: TrackSid = format!("TR_{}", nanoid::nanoid!(17)).try_into().unwrap();
+        let server_track = Arc::new(TestServerAudioTrack {
+            sid: sid.clone(),
+            publisher_id: identity.clone(),
+            muted: AtomicBool::new(false),
+        });
+
+        room.audio_tracks.push(server_track.clone());
+
+        for (room_identity, client_room) in &room.client_rooms {
+            if *room_identity != identity {
+                let track = RemoteTrack::Audio(RemoteAudioTrack {
+                    server_track: server_track.clone(),
+                    room: client_room.downgrade(),
+                });
+                let publication = RemoteTrackPublication {
+                    sid: sid.clone(),
+                    room: client_room.downgrade(),
+                    track: track.clone(),
+                };
+                let participant = RemoteParticipant {
+                    identity: identity.clone(),
+                    room: client_room.downgrade(),
+                };
+                client_room
+                    .0
+                    .lock()
+                    .updates_tx
+                    .blocking_send(RoomEvent::TrackSubscribed {
+                        track,
+                        publication,
+                        participant,
+                    })
+                    .ok();
+            }
+        }
+
+        Ok(sid)
+    }
+
+    pub(crate) async fn unpublish_track(&self, token: String, track_sid: &TrackSid) -> Result<()> {
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let room_name = claims.video.room.unwrap();
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+
+        if let Some(video_to_unpublish) = room.video_tracks.iter().position(|t| t.sid == *track_sid)
+        {
+            let video_to_unpublish = room.video_tracks.remove(video_to_unpublish);
+            for client_room in room
+                .client_rooms
+                .iter()
+                .filter(|(id, _)| **id != identity)
+                .map(|(_, room)| room)
+            {
+                let track = RemoteTrack::Video(RemoteVideoTrack {
+                    server_track: video_to_unpublish.clone(),
+                    _room: client_room.downgrade(),
+                });
+                let publication = RemoteTrackPublication {
+                    sid: track_sid.clone(),
+                    room: client_room.downgrade(),
+                    track: track.clone(),
+                };
+                let participant = RemoteParticipant {
+                    identity: identity.clone(),
+                    room: client_room.downgrade(),
+                };
+                let event = RoomEvent::TrackUnsubscribed {
+                    track,
+                    publication,
+                    participant,
+                };
+
+                client_room.0.lock().updates_tx.blocking_send(event).ok();
+            }
+        }
+
+        if let Some(audio_to_unpublish) = room.audio_tracks.iter().position(|t| t.sid == *track_sid)
+        {
+            let audio_to_unpublish = room.audio_tracks.remove(audio_to_unpublish);
+            for client_room in room
+                .client_rooms
+                .iter()
+                .filter(|(id, _)| **id != identity)
+                .map(|(_, room)| room)
+            {
+                let track = RemoteTrack::Audio(RemoteAudioTrack {
+                    server_track: audio_to_unpublish.clone(),
+                    room: client_room.downgrade(),
+                });
+                let publication = RemoteTrackPublication {
+                    sid: track_sid.clone(),
+                    room: client_room.downgrade(),
+                    track: track.clone(),
+                };
+                let participant = RemoteParticipant {
+                    identity: identity.clone(),
+                    room: client_room.downgrade(),
+                };
+                let event = RoomEvent::TrackUnsubscribed {
+                    track,
+                    publication,
+                    participant,
+                };
+
+                client_room.0.lock().updates_tx.blocking_send(event).ok();
+            }
+        }
+
+        Ok(())
+    }
+
+    pub(crate) fn set_track_muted(
+        &self,
+        token: &str,
+        track_sid: &TrackSid,
+        muted: bool,
+    ) -> Result<()> {
+        let claims = livekit_api::token::validate(token, &self.secret_key)?;
+        let room_name = claims.video.room.unwrap();
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+        if let Some(track) = room
+            .audio_tracks
+            .iter_mut()
+            .find(|track| track.sid == *track_sid)
+        {
+            track.muted.store(muted, SeqCst);
+            for (id, client_room) in room.client_rooms.iter() {
+                if *id != identity {
+                    let participant = Participant::Remote(RemoteParticipant {
+                        identity: identity.clone(),
+                        room: client_room.downgrade(),
+                    });
+                    let track = RemoteTrack::Audio(RemoteAudioTrack {
+                        server_track: track.clone(),
+                        room: client_room.downgrade(),
+                    });
+                    let publication = TrackPublication::Remote(RemoteTrackPublication {
+                        sid: track_sid.clone(),
+                        room: client_room.downgrade(),
+                        track,
+                    });
+
+                    let event = if muted {
+                        RoomEvent::TrackMuted {
+                            participant,
+                            publication,
+                        }
+                    } else {
+                        RoomEvent::TrackUnmuted {
+                            participant,
+                            publication,
+                        }
+                    };
+
+                    client_room
+                        .0
+                        .lock()
+                        .updates_tx
+                        .blocking_send(event)
+                        .unwrap();
+                }
+            }
+        }
+        Ok(())
+    }
+
+    pub(crate) fn is_track_muted(&self, token: &str, track_sid: &TrackSid) -> Option<bool> {
+        let claims = livekit_api::token::validate(token, &self.secret_key).ok()?;
+        let room_name = claims.video.room.unwrap();
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms.get_mut(&*room_name)?;
+        room.audio_tracks.iter().find_map(|track| {
+            if track.sid == *track_sid {
+                Some(track.muted.load(SeqCst))
+            } else {
+                None
+            }
+        })
+    }
+
+    pub(crate) fn video_tracks(&self, token: String) -> Result<Vec<RemoteVideoTrack>> {
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let room_name = claims.video.room.unwrap();
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+        let client_room = room
+            .client_rooms
+            .get(&identity)
+            .context("not a participant in room")?;
+        Ok(room
+            .video_tracks
+            .iter()
+            .map(|track| RemoteVideoTrack {
+                server_track: track.clone(),
+                _room: client_room.downgrade(),
+            })
+            .collect())
+    }
+
+    pub(crate) fn audio_tracks(&self, token: String) -> Result<Vec<RemoteAudioTrack>> {
+        let claims = livekit_api::token::validate(&token, &self.secret_key)?;
+        let room_name = claims.video.room.unwrap();
+        let identity = ParticipantIdentity(claims.sub.unwrap().to_string());
+
+        let mut server_rooms = self.rooms.lock();
+        let room = server_rooms
+            .get_mut(&*room_name)
+            .with_context(|| format!("room {room_name} does not exist"))?;
+        let client_room = room
+            .client_rooms
+            .get(&identity)
+            .context("not a participant in room")?;
+        Ok(room
+            .audio_tracks
+            .iter()
+            .map(|track| RemoteAudioTrack {
+                server_track: track.clone(),
+                room: client_room.downgrade(),
+            })
+            .collect())
+    }
+
+    async fn simulate_random_delay(&self) {
+        #[cfg(any(test, feature = "test-support"))]
+        self.executor.simulate_random_delay().await;
+    }
+}
+
+#[derive(Default, Debug)]
+struct TestServerRoom {
+    client_rooms: HashMap<ParticipantIdentity, Room>,
+    video_tracks: Vec<Arc<TestServerVideoTrack>>,
+    audio_tracks: Vec<Arc<TestServerAudioTrack>>,
+    participant_permissions: HashMap<ParticipantIdentity, proto::ParticipantPermission>,
+}
+
+#[derive(Debug)]
+pub(crate) struct TestServerVideoTrack {
+    pub(crate) sid: TrackSid,
+    pub(crate) publisher_id: ParticipantIdentity,
+    // frames_rx: async_broadcast::Receiver<Frame>,
+}
+
+#[derive(Debug)]
+pub(crate) struct TestServerAudioTrack {
+    pub(crate) sid: TrackSid,
+    pub(crate) publisher_id: ParticipantIdentity,
+    pub(crate) muted: AtomicBool,
+}
+
+pub struct TestApiClient {
+    url: String,
+}
+
+#[async_trait]
+impl livekit_api::Client for TestApiClient {
+    fn url(&self) -> &str {
+        &self.url
+    }
+
+    async fn create_room(&self, name: String) -> Result<()> {
+        let server = TestServer::get(&self.url)?;
+        server.create_room(name).await?;
+        Ok(())
+    }
+
+    async fn delete_room(&self, name: String) -> Result<()> {
+        let server = TestServer::get(&self.url)?;
+        server.delete_room(name).await?;
+        Ok(())
+    }
+
+    async fn remove_participant(&self, room: String, identity: String) -> Result<()> {
+        let server = TestServer::get(&self.url)?;
+        server
+            .remove_participant(room, ParticipantIdentity(identity))
+            .await?;
+        Ok(())
+    }
+
+    async fn update_participant(
+        &self,
+        room: String,
+        identity: String,
+        permission: livekit_api::proto::ParticipantPermission,
+    ) -> Result<()> {
+        let server = TestServer::get(&self.url)?;
+        server
+            .update_participant(room, identity, permission)
+            .await?;
+        Ok(())
+    }
+
+    fn room_token(&self, room: &str, identity: &str) -> Result<String> {
+        let server = TestServer::get(&self.url)?;
+        token::create(
+            &server.api_key,
+            &server.secret_key,
+            Some(identity),
+            token::VideoGrant::to_join(room),
+        )
+    }
+
+    fn guest_token(&self, room: &str, identity: &str) -> Result<String> {
+        let server = TestServer::get(&self.url)?;
+        token::create(
+            &server.api_key,
+            &server.secret_key,
+            Some(identity),
+            token::VideoGrant::for_guest(room),
+        )
+    }
+}
+
+pub(crate) struct RoomState {
+    pub(crate) url: String,
+    pub(crate) token: String,
+    pub(crate) local_identity: ParticipantIdentity,
+    pub(crate) connection_state: ConnectionState,
+    pub(crate) paused_audio_tracks: HashSet<TrackSid>,
+    pub(crate) updates_tx: mpsc::Sender<RoomEvent>,
+}
+
+#[derive(Clone, Debug)]
+pub struct Room(pub(crate) Arc<Mutex<RoomState>>);
+
+#[derive(Clone, Debug)]
+pub(crate) struct WeakRoom(Weak<Mutex<RoomState>>);
+
+impl std::fmt::Debug for RoomState {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("Room")
+            .field("url", &self.url)
+            .field("token", &self.token)
+            .field("local_identity", &self.local_identity)
+            .field("connection_state", &self.connection_state)
+            .field("paused_audio_tracks", &self.paused_audio_tracks)
+            .finish()
+    }
+}
+
+impl Room {
+    pub(crate) fn downgrade(&self) -> WeakRoom {
+        WeakRoom(Arc::downgrade(&self.0))
+    }
+
+    pub fn connection_state(&self) -> ConnectionState {
+        self.0.lock().connection_state
+    }
+
+    pub fn local_participant(&self) -> LocalParticipant {
+        let identity = self.0.lock().local_identity.clone();
+        LocalParticipant {
+            identity,
+            room: self.clone(),
+        }
+    }
+
+    pub async fn connect(
+        url: String,
+        token: String,
+        _cx: &mut AsyncApp,
+    ) -> Result<(Self, mpsc::Receiver<RoomEvent>)> {
+        let server = TestServer::get(&url)?;
+        let (updates_tx, updates_rx) = mpsc::channel(1024);
+        let this = Self(Arc::new(Mutex::new(RoomState {
+            local_identity: ParticipantIdentity(String::new()),
+            url: url.to_string(),
+            token: token.to_string(),
+            connection_state: ConnectionState::Disconnected,
+            paused_audio_tracks: Default::default(),
+            updates_tx,
+        })));
+
+        let identity = server
+            .join_room(token.to_string(), this.clone())
+            .await
+            .context("room join")?;
+        {
+            let mut state = this.0.lock();
+            state.local_identity = identity;
+            state.connection_state = ConnectionState::Connected;
+        }
+
+        Ok((this, updates_rx))
+    }
+
+    pub fn remote_participants(&self) -> HashMap<ParticipantIdentity, RemoteParticipant> {
+        self.test_server()
+            .remote_participants(self.0.lock().token.clone())
+            .unwrap()
+    }
+
+    pub(crate) fn test_server(&self) -> Arc<TestServer> {
+        TestServer::get(&self.0.lock().url).unwrap()
+    }
+
+    pub(crate) fn token(&self) -> String {
+        self.0.lock().token.clone()
+    }
+
+    pub fn name(&self) -> String {
+        "test_room".to_string()
+    }
+
+    pub async fn sid(&self) -> String {
+        "RM_test_session".to_string()
+    }
+
+    pub fn play_remote_audio_track(
+        &self,
+        _track: &RemoteAudioTrack,
+        _cx: &App,
+    ) -> anyhow::Result<AudioStream> {
+        Ok(AudioStream {})
+    }
+
+    pub async fn unpublish_local_track(&self, sid: TrackSid, cx: &mut AsyncApp) -> Result<()> {
+        self.local_participant().unpublish_track(sid, cx).await
+    }
+
+    pub async fn publish_local_microphone_track(
+        &self,
+        _track_name: String,
+        _is_staff: bool,
+        cx: &mut AsyncApp,
+    ) -> Result<(LocalTrackPublication, AudioStream, Arc<AtomicU64>)> {
+        self.local_participant().publish_microphone_track(cx).await
+    }
+
+    pub async fn get_stats(&self) -> Result<SessionStats> {
+        Ok(SessionStats::default())
+    }
+
+    pub fn stats_task(&self, _cx: &impl gpui::AppContext) -> gpui::Task<Result<SessionStats>> {
+        gpui::Task::ready(Ok(SessionStats::default()))
+    }
+}
+
+impl Drop for RoomState {
+    fn drop(&mut self) {
+        if self.connection_state == ConnectionState::Connected
+            && let Ok(server) = TestServer::get(&self.url)
+        {
+            let executor = server.executor.clone();
+            let token = self.token.clone();
+            executor
+                .spawn(async move { server.leave_room(token).await.ok() })
+                .detach();
+        }
+    }
+}
+
+impl WeakRoom {
+    pub(crate) fn upgrade(&self) -> Option<Room> {
+        self.0.upgrade().map(Room)
+    }
+}