Solian/lib/providers/content/call.dart

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2024-06-01 12:18:25 +00:00
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_background/flutter_background.dart';
import 'package:get/get.dart';
import 'package:livekit_client/livekit_client.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:solian/models/call.dart';
import 'package:solian/models/channel.dart';
import 'package:solian/providers/auth.dart';
import 'package:solian/screens/channel/call/call.dart';
import 'package:wakelock_plus/wakelock_plus.dart';
class ChatCallProvider extends GetxController {
Rx<Call?> current = Rx(null);
Rx<Channel?> channel = Rx(null);
RxBool isReady = false.obs;
RxBool isMounted = false.obs;
String? token;
String? endpoint;
StreamSubscription? hwSubscription;
RxList audioInputs = [].obs;
RxList videoInputs = [].obs;
RxBool enableAudio = true.obs;
RxBool enableVideo = false.obs;
Rx<LocalAudioTrack?> audioTrack = Rx(null);
Rx<LocalVideoTrack?> videoTrack = Rx(null);
Rx<MediaDevice?> videoDevice = Rx(null);
Rx<MediaDevice?> audioDevice = Rx(null);
final VideoParameters videoParameters = VideoParametersPresets.h720_169;
late Room room;
late EventsListener<RoomEvent> listener;
RxList participantTracks = [].obs;
Rx<ParticipantTrack?> focusTrack = Rx(null);
Future<void> checkPermissions() async {
if (lkPlatformIs(PlatformType.macOS) || lkPlatformIs(PlatformType.linux)) {
return;
}
if (lkPlatformIs(PlatformType.android)) {
FlutterBackground.enableBackgroundExecution();
}
await Permission.camera.request();
await Permission.microphone.request();
await Permission.bluetooth.request();
await Permission.bluetoothConnect.request();
}
void setCall(Call call, Channel related) {
current.value = call;
channel.value = related;
}
Future<(String, String)> getRoomToken() async {
final AuthProvider auth = Get.find();
if (!await auth.isAuthorized) throw Exception('unauthorized');
final client = auth.configureClient(service: 'messaging');
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final resp = await client.post(
'/api/channels/global/${channel.value!.alias}/calls/ongoing/token',
{},
);
if (resp.statusCode == 200) {
token = resp.body['token'];
endpoint = 'wss://${resp.body['endpoint']}';
return (token!, endpoint!);
} else {
throw Exception(resp.bodyString);
}
}
void initHardware() {
if (isReady.value) {
return;
} else {
isReady.value = true;
}
hwSubscription = Hardware.instance.onDeviceChange.stream.listen(
revertDevices,
);
Hardware.instance.enumerateDevices().then(revertDevices);
}
void initRoom() {
initHardware();
room = Room();
listener = room.createListener();
WakelockPlus.enable();
}
void joinRoom(String url, String token) async {
if (isMounted.value) {
return;
} else {
isMounted.value = true;
}
try {
await room.connect(
url,
token,
roomOptions: RoomOptions(
dynacast: true,
adaptiveStream: true,
defaultAudioPublishOptions: const AudioPublishOptions(
name: 'call_voice',
stream: 'call_stream',
),
defaultVideoPublishOptions: const VideoPublishOptions(
name: 'call_video',
stream: 'call_stream',
simulcast: true,
backupVideoCodec: BackupVideoCodec(enabled: true),
),
defaultScreenShareCaptureOptions: const ScreenShareCaptureOptions(
useiOSBroadcastExtension: true,
params: VideoParameters(
dimensions: VideoDimensionsPresets.h1080_169,
encoding:
VideoEncoding(maxBitrate: 3 * 1000 * 1000, maxFramerate: 30),
),
),
defaultCameraCaptureOptions:
CameraCaptureOptions(maxFrameRate: 30, params: videoParameters),
),
fastConnectOptions: FastConnectOptions(
microphone: TrackOption(track: audioTrack.value),
camera: TrackOption(track: videoTrack.value),
),
);
} catch (e) {
rethrow;
}
}
void autoPublish() async {
try {
if (enableVideo.value) {
await room.localParticipant?.setCameraEnabled(true);
}
if (enableAudio.value) {
await room.localParticipant?.setMicrophoneEnabled(true);
}
} catch (error) {
rethrow;
}
}
void onRoomDidUpdate() => sortParticipants();
void setupRoom() {
sortParticipants();
room.addListener(onRoomDidUpdate);
WidgetsBindingCompatible.instance?.addPostFrameCallback(
(_) => autoPublish(),
);
if (lkPlatformIsMobile()) {
Hardware.instance.setSpeakerphoneOn(true);
}
}
void setupRoomListeners({
required Function(DisconnectReason?) onDisconnected,
}) {
listener
..on<RoomDisconnectedEvent>((event) async {
onDisconnected(event.reason);
})
..on<ParticipantEvent>((event) => sortParticipants())
..on<LocalTrackPublishedEvent>((_) => sortParticipants())
..on<LocalTrackUnpublishedEvent>((_) => sortParticipants())
..on<TrackSubscribedEvent>((_) => sortParticipants())
..on<TrackUnsubscribedEvent>((_) => sortParticipants())
..on<ParticipantNameUpdatedEvent>((event) {
sortParticipants();
});
}
void sortParticipants() {
Map<String, ParticipantTrack> mediaTracks = {};
for (var participant in room.remoteParticipants.values) {
mediaTracks[participant.sid] = ParticipantTrack(
participant: participant,
videoTrack: null,
isScreenShare: false,
);
for (var t in participant.videoTrackPublications) {
mediaTracks[participant.sid]?.videoTrack = t.track;
mediaTracks[participant.sid]?.isScreenShare = t.isScreenShare;
}
}
final newTracks = List.empty(growable: true);
final mediaTrackList = mediaTracks.values.toList();
mediaTrackList.sort((a, b) {
// Loudest people first
if (a.participant.isSpeaking && b.participant.isSpeaking) {
if (a.participant.audioLevel > b.participant.audioLevel) {
return -1;
} else {
return 1;
}
}
// Last spoke first
final aSpokeAt = a.participant.lastSpokeAt?.millisecondsSinceEpoch ?? 0;
final bSpokeAt = b.participant.lastSpokeAt?.millisecondsSinceEpoch ?? 0;
if (aSpokeAt != bSpokeAt) {
return aSpokeAt > bSpokeAt ? -1 : 1;
}
// Has video first
if (a.participant.hasVideo != b.participant.hasVideo) {
return a.participant.hasVideo ? -1 : 1;
}
// First joined people first
return a.participant.joinedAt.millisecondsSinceEpoch -
b.participant.joinedAt.millisecondsSinceEpoch;
});
newTracks.addAll(mediaTrackList);
if (room.localParticipant != null) {
ParticipantTrack localTrack = ParticipantTrack(
participant: room.localParticipant!,
videoTrack: null,
isScreenShare: false,
);
final localParticipantTracks =
room.localParticipant?.videoTrackPublications;
if (localParticipantTracks != null) {
for (var t in localParticipantTracks) {
localTrack.videoTrack = t.track;
localTrack.isScreenShare = t.isScreenShare;
}
}
newTracks.add(localTrack);
}
participantTracks.value = newTracks;
if (focusTrack.value == null) {
focusTrack.value = participantTracks.firstOrNull;
} else {
final idx = participantTracks.indexWhere(
(x) => focusTrack.value!.participant.sid == x.participant.sid,
);
if (idx > -1) {
focusTrack.value = participantTracks[idx];
}
}
}
void revertDevices(List<MediaDevice> devices) async {
audioInputs.clear();
audioInputs.addAll(devices.where((d) => d.kind == 'audioinput'));
videoInputs.clear();
videoInputs.addAll(devices.where((d) => d.kind == 'videoinput'));
if (audioInputs.isNotEmpty) {
if (audioDevice.value == null && enableAudio.value) {
audioDevice.value = audioInputs.first;
Future.delayed(const Duration(milliseconds: 100), () async {
await changeLocalAudioTrack();
});
}
}
if (videoInputs.isNotEmpty) {
if (videoDevice.value == null && enableVideo.value) {
videoDevice.value = videoInputs.first;
Future.delayed(const Duration(milliseconds: 100), () async {
await changeLocalVideoTrack();
});
}
}
}
Future<void> setEnableVideo(value) async {
enableVideo.value = value;
if (!enableVideo.value) {
await videoTrack.value?.stop();
videoTrack.value = null;
} else {
await changeLocalVideoTrack();
}
}
Future<void> setEnableAudio(value) async {
enableAudio.value = value;
if (!enableAudio.value) {
await audioTrack.value?.stop();
audioTrack.value = null;
} else {
await changeLocalAudioTrack();
}
}
Future<void> changeLocalAudioTrack() async {
if (audioTrack.value != null) {
await audioTrack.value!.stop();
audioTrack.value = null;
}
if (audioDevice.value != null) {
audioTrack.value = await LocalAudioTrack.create(
AudioCaptureOptions(
deviceId: audioDevice.value!.deviceId,
),
);
await audioTrack.value!.start();
}
}
Future<void> changeLocalVideoTrack() async {
if (videoTrack.value != null) {
await videoTrack.value!.stop();
videoTrack.value = null;
}
if (videoDevice.value != null) {
videoTrack.value = await LocalVideoTrack.createCameraTrack(
CameraCaptureOptions(
deviceId: videoDevice.value!.deviceId,
params: videoParameters,
),
);
await videoTrack.value!.start();
}
}
void changeFocusTrack(ParticipantTrack track) {
focusTrack.value = track;
}
Future gotoScreen(BuildContext context) {
return Navigator.of(context, rootNavigator: true).push(
MaterialPageRoute(builder: (context) => const CallScreen()),
);
}
void deactivateHardware() {
hwSubscription?.cancel();
}
void disposeRoom() {
isMounted.value = false;
current.value = null;
channel.value = null;
room.removeListener(onRoomDidUpdate);
room.disconnect();
room.dispose();
listener.dispose();
WakelockPlus.disable();
}
void disposeHardware() {
isReady.value = false;
audioTrack.value?.stop();
audioTrack.value = null;
videoTrack.value?.stop();
videoTrack.value = null;
}
}