checkpoint - participant & tracks initial stubs

2021-07-20 23:08:37 -07:00
parent 10ab3cdcac
commit 0a682f7831
12 changed files with 306 additions and 20 deletions
@@ -0,0 +1,78 @@
+import 'dart:async';
+import 'package:flutter_webrtc/flutter_webrtc.dart';
+
+import 'extensions.dart';
+import 'logger.dart';
+import 'participant/local_participant.dart';
+import 'participant/participant.dart';
+import 'participant/remote_participant.dart';
+import 'proto/livekit_models.pb.dart';
+import 'proto/livekit_rtc.pb.dart';
+import 'rtc_engine.dart';
+import 'signal_client.dart';
+
+enum RoomState {
+  Disconnected,
+  Connected,
+  Reconnecting,
+}
+
+class Room {
+  RoomState state = RoomState.Disconnected;
+
+  /// map of SID to RemoteParticipant
+  Map<String, RemoteParticipant> participants = {};
+
+  /// the current participant
+  late LocalParticipant localParticipant;
+
+  /// name of the room
+  late String name;
+
+  /// sid of the room
+  late String sid;
+
+  /// a list of participants that are actively speaking, including local participant.
+  List<Participant> activeSpeakers = [];
+
+  RTCEngine _engine;
+
+  Completer<Room>? _connectCompleter;
+
+  Room(SignalClient client, RTCConfiguration? rtcConfig)
+      : _engine = new RTCEngine(client, rtcConfig) {
+    _engine.onTrack = _onTrackAdded;
+    _engine.onDisconnected = _handleDisconnect;
+    _engine.onParticipantUpdateCallback = _handleParticipantUpdate;
+    _engine.onActiveSpeakerchangedCallback = _handleSpeakerUpdate;
+    _engine.onDataMessageCallback = _handleDataPacket;
+
+    // TODO: handle reconnecting & reconnected events
+  }
+
+  Future<Room> _connect(String url, String token, JoinOptions? opts) async {
+    var completer = new Completer<Room>();
+    _connectCompleter = completer;
+
+    var joinResponse = await _engine.join(url, token, opts);
+    logger.fine(
+        'connected to LiveKit server, version: ${joinResponse.serverVersion}');
+
+    state = RoomState.Connected;
+    var pi = joinResponse.participant;
+    localParticipant = new LocalParticipant(pi.sid, pi.identity, _engine);
+
+    return completer.future;
+  }
+
+  _handleDisconnect() {}
+
+  _handleParticipantUpdate(List<ParticipantInfo> participants) {}
+
+  _handleSpeakerUpdate(List<SpeakerInfo> speakers) {}
+
+  _handleDataPacket(UserPacket packet, DataPacket_Kind kind) {}
+
+  _onTrackAdded(
+      MediaStreamTrack track, MediaStream? stream, RTCRtpReceiver? receiver) {}
+}