A Flutter WebRTC plugin (2OS)

flutter webrtc

flutter webrtc plugin for ios/android

usage

add flutter_webrtc as a dependency in your pubspec.yaml file.

ios

add the following entry to your info.plist file, located in <project root>/ios/runner/info.plist:

<key>nscamerausagedescription</key>
<string>$(product_name) camera usage!</string>
<key>nsmicrophoneusagedescription</key>
<string>$(product_name) microphone usage!</string>
<key>nsphotolibraryusagedescription</key>

this entry allows your app to access camera and microphone.

android

ensure the following permission is present in your android manifest file, located in `/android/app/src/main/androidmanifest.xml:

<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.camera" />
<uses-permission android:name="android.permission.record_audio" />
<uses-permission android:name="android.permission.access_network_state" />
<uses-permission android:name="android.permission.change_network_state" />
<uses-permission android:name="android.permission.modify_audio_settings" />

the flutter project template adds it, so it may already be there.

functionality

we intend to implement support the following features:

• [ ] data channel
• [ ] port to flutter-desktop-embedding
• [ ] screen capture
• [ ] ortc api
• [ ] port to fuchsia

example

import 'package:flutter/material.dart';
import 'package:flutter_webrtc/webrtc.dart';
import 'dart:core';

/**
 * getusermedia sample
 */
class getusermediasample extends statefulwidget {
  static string tag = 'get_usermedia_sample';

  @override
  _getusermediasamplestate createstate() => new _getusermediasamplestate();
}

class _getusermediasamplestate extends state<getusermediasample> {
  mediastream _localstream;
  final _localrenderer = new rtcvideorenderer();
  bool _incalling = false;

  @override
  initstate() {
    super.initstate();
    initrenderers();
  }

  @override
  deactivate() {
    super.deactivate();
    if (_incalling) {
      _hangup();
    }
  }

  initrenderers() async {
    await _localrenderer.initialize();
  }

  // platform messages are asynchronous, so we initialize in an async method.
  _makecall() async {
    final map<string, dynamic> mediaconstraints = {
      "audio": true,
      "video": {
        "mandatory": {
          "minwidth":'640', // provide your own width, height and frame rate here
          "minheight": '480',
          "minframerate": '30',
        },
        "facingmode": "user",
        "optional": [],
      }
    };

    try {
      navigator.getusermedia(mediaconstraints).then((stream){
        _localstream = stream;
        _localrenderer.srcobject = _localstream;
      });
    } catch (e) {
      print(e.tostring());
    }
    if (!mounted) return;

    setstate(() {
      _incalling = true;
    });
  }

  _hangup() async {
    try {
      await _localstream.dispose();
      _localrenderer.srcobject = null;
    } catch (e) {
      print(e.tostring());
    }
    setstate(() {
      _incalling = false;
    });
  }

  @override
  widget build(buildcontext context) {
    return new scaffold(
      appbar: new appbar(
        title: new text('getusermedia api test'),
      ),
      body: new orientationbuilder(
        builder: (context, orientation) {
          return new center(
            child: new container(
              margin: new edgeinsets.fromltrb(0.0, 0.0, 0.0, 0.0),
              width: mediaquery.of(context).size.width,
              height: mediaquery.of(context).size.height,
              child: rtcvideoview(_localrenderer),
              decoration: new boxdecoration(color: colors.black54),
            ),
          );
        },
      ),
      floatingactionbutton: new floatingactionbutton(
        onpressed: _incalling ? _hangup : _makecall,
        tooltip: _incalling ? 'hangup' : 'call',
        child: new icon(_incalling ? icons.call_end : icons.phone),
      ),
    );
  }
}

for more examples, please refer to flutter-webrtc-demo.

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