fix participant updates (#23)

livekit/src/rtc_engine/mod.rs

@@ -69,7 +69,9 @@ pub enum EngineError {
 
 #[derive(Debug)]
 pub enum EngineEvent {
-    ParticipantUpdate(ParticipantUpdate),
+    ParticipantUpdate {
+        updates: Vec<proto::ParticipantInfo>,
+    },
     MediaTrack {
         track: MediaStreamTrackHandle,
         stream: MediaStream,
@@ -282,6 +284,12 @@ impl EngineInner {
                     })
                     .await;
             }
+            SessionEvent::ParticipantUpdate { updates } => {
+                let _ = self
+                    .engine_emitter
+                    .send(EngineEvent::ParticipantUpdate { updates })
+                    .await;
+            }
             SessionEvent::SpeakersChanged { speakers } => {
                 let _ = self
                     .engine_emitter

livekit/src/rtc_engine/rtc_session.rs

@@ -43,6 +43,9 @@ pub type SessionEvents = mpsc::UnboundedReceiver<SessionEvent>;
 
 #[derive(Debug)]
 pub enum SessionEvent {
+    ParticipantUpdate {
+        updates: Vec<proto::ParticipantInfo>,
+    },
     Data {
         participant_sid: String,
         payload: Vec<u8>,
@@ -421,6 +424,11 @@ impl SessionInner {
                     true,
                 );
             }
+            signal_response::Message::Update(update) => {
+                let _ = self.emitter.send(SessionEvent::ParticipantUpdate {
+                    updates: update.participants,
+                });
+            }
             signal_response::Message::SpeakersChanged(speaker) => {
                 let _ = self.emitter.send(SessionEvent::SpeakersChanged {
                     speakers: speaker.speakers,