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streaming.dart
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streaming.dart
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import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:janus_client/janus_client.dart';
import 'package:flutter_webrtc/flutter_webrtc.dart';
import 'package:janus_client_example/conf.dart';
class TypedStreamingV2 extends StatefulWidget {
@override
_StreamingState createState() => _StreamingState();
}
class _StreamingState extends State<TypedStreamingV2> {
late JanusClient client;
late RestJanusTransport rest;
late WebSocketJanusTransport ws;
late JanusSession session;
late JanusStreamingPlugin plugin;
Map<String, RTCVideoRenderer> remoteVideoRenderers = {};
Map<String, MediaStream> remoteVideoStreams = {};
Map<String, MediaStream> remoteAudioStreams = {};
Map<String, RTCVideoRenderer> remoteAudioRenderers = {};
late List<StreamingMountPoint> streams;
int? selectedStreamId;
bool _loader = true;
late StateSetter _setState;
bool isPlaying = true;
bool isMuted = false;
showStreamSelectionDialog() async {
return showDialog(
context: context,
barrierDismissible: false,
builder: (context) {
return StatefulBuilder(builder: (context, setstate) {
_setState = setstate;
return AlertDialog(
title: Text("Choose Stream To Play"),
content: Column(
children: [
DropdownButtonFormField<int>(
isExpanded: true,
value: selectedStreamId,
items: List.generate(streams.length, (index) => DropdownMenuItem(value: streams[index].id, child: Text(streams[index].description ?? ''))),
onChanged: (v) async {
print(v);
if (v != null) {
_setState(() {
selectedStreamId = v;
});
}
}),
ElevatedButton(
onPressed: () async {
await plugin.watchStream(selectedStreamId!);
Navigator.of(context).pop();
},
child: Text("Play"),
)
],
),
);
});
});
}
initJanusClient() async {
setState(() {
rest = RestJanusTransport(url: servermap['janus_rest']);
ws = WebSocketJanusTransport(url: servermap['janus_ws']);
client = JanusClient(
transport: ws,
iceServers: [
RTCIceServer(username: '', credential: '', urls: 'stun:stun.l.google.com:19302'),
],
isUnifiedPlan: true,
);
});
session = await client.createSession();
plugin = await session.attach<JanusStreamingPlugin>();
var streamList = await plugin.listStreams();
setState(() {
streams = streamList;
});
showStreamSelectionDialog();
plugin.remoteTrack?.listen((event) async {
if (event.track != null && event.flowing == true && event.track?.kind == 'audio') {
MediaStream temp = await createLocalMediaStream(event.track!.id!);
setState(() {
remoteAudioRenderers.putIfAbsent(event.track!.id!, () => RTCVideoRenderer());
remoteAudioStreams.putIfAbsent(event.track!.id!, () => temp);
});
await remoteAudioRenderers[event.track!.id!]?.initialize();
await remoteAudioStreams[event.track!.id!]?.addTrack(event.track!);
remoteAudioRenderers[event.track!.id!]?.srcObject = remoteAudioStreams[event.track!.id!];
if (kIsWeb) {
remoteAudioRenderers[event.track!.id!]?.muted = false;
}
}
if (event.track != null && event.flowing == true && event.track?.kind == 'video') {
MediaStream temp = await createLocalMediaStream(event.track!.id!);
setState(() {
remoteVideoRenderers.putIfAbsent(event.track!.id!, () => RTCVideoRenderer());
remoteVideoStreams.putIfAbsent(event.track!.id!, () => temp);
});
await remoteVideoRenderers[event.track!.id!]?.initialize();
await remoteVideoStreams[event.track!.id!]?.addTrack(event.track!);
remoteVideoRenderers[event.track!.id!]?.srcObject = remoteVideoStreams[event.track!.id!];
if (kIsWeb) {
remoteVideoRenderers[event.track!.id!]?.muted = false;
}
}
});
plugin.typedMessages?.listen((event) async {
Object data = event.event.plugindata?.data;
if (data is StreamingPluginPreparingEvent) {
await plugin.handleRemoteJsep(event.jsep);
await plugin.startStream();
setState(() {
_loader = false;
});
}
if (data is StreamingPluginStoppingEvent) {
destroy();
Navigator.of(context).pop();
}
});
}
@override
void initState() {
// TODO: implement initState
super.initState();
initJanusClient();
}
cleanUpWebRTCStuff() {
remoteAudioStreams.forEach((key, value) {
stopAllTracksAndDispose(value);
});
remoteVideoStreams.forEach((key, value) {
stopAllTracksAndDispose(value);
});
remoteAudioRenderers.forEach((key, value) async {
value.srcObject = null;
await value.dispose();
});
remoteVideoRenderers.forEach((key, value) async {
value.srcObject = null;
await value.dispose();
});
}
destroy() async {
cleanUpWebRTCStuff();
await plugin.stopStream();
await plugin.dispose();
session.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Stack(children: [
...remoteAudioRenderers.entries.map((e) => e.value).map((e) => RTCVideoView(e)).toList(),
Column(
children: [
Expanded(
child: GridView.count(
crossAxisCount: 1,
childAspectRatio: MediaQuery.of(context).size.width / (MediaQuery.of(context).size.height / (remoteVideoRenderers.length > 0 ? remoteVideoRenderers.length : 1)),
mainAxisSpacing: 0,
crossAxisSpacing: 5,
shrinkWrap: true,
children: remoteVideoRenderers.entries
.map((e) => e.value)
.map((e) => RTCVideoView(
e,
objectFit: RTCVideoViewObjectFit.RTCVideoViewObjectFitContain,
))
.toList(),
)),
],
),
!_loader
? Align(
alignment: Alignment.bottomCenter,
child: Row(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Padding(
child: CircleAvatar(
backgroundColor: Colors.red,
radius: 30,
child: IconButton(
icon: Icon(Icons.stop),
color: Colors.white,
onPressed: () {
Navigator.of(context).pop();
})),
padding: EdgeInsets.all(10),
),
Padding(
child: CircleAvatar(
backgroundColor: Colors.grey,
radius: 30,
child: IconButton(
icon: Icon(isMuted ? Icons.volume_off : Icons.volume_up),
color: Colors.white,
onPressed: () async {
if (isMuted) {
setState(() {
isMuted = false;
});
} else {
setState(() {
isMuted = true;
});
}
var transrecievers = await plugin.webRTCHandle?.peerConnection?.transceivers;
transrecievers?.forEach((element) {
if (element.receiver.track?.kind == 'audio') {
element.receiver.track?.enabled = !isMuted;
}
});
})),
padding: EdgeInsets.all(10),
),
Padding(
child: CircleAvatar(
backgroundColor: Colors.green,
radius: 30,
child: IconButton(
icon: Icon(isPlaying ? Icons.pause : Icons.play_arrow),
color: Colors.white,
onPressed: () async {
if (isPlaying) {
await plugin.pauseStream();
setState(() {
isPlaying = false;
});
} else {
setState(() {
isPlaying = true;
});
// await plugin.watchStream(selectedStreamId!);
await plugin.startStream();
}
})),
padding: EdgeInsets.all(10),
),
],
),
)
: Padding(padding: EdgeInsets.zero),
_loader
? Align(
alignment: Alignment.center,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [CircularProgressIndicator(), Padding(padding: EdgeInsets.all(10)), Text("Fetching Available Streams..")],
),
)
: Padding(padding: EdgeInsets.zero),
]),
);
}
@override
void dispose() async {
// TODO: implement dispose
super.dispose();
destroy();
}
}