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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import Logger from './Logger.js'; import IceCandidate from './misc/RTCIceCandidate'; import PeerConnection from './misc/RTCPeerConnection'; import SessionDescription from './misc/RTCSessionDescription'; const defaultPortalOptions = { shouldBroadcast: true, portal: true, video: false, audio: true }; export default class Portal { /** * Creates a video room instance * @param {*} channel */ constructor(channel, identity) { this.channel = channel; this.logger = new Logger(identity); this.identity = { ...defaultPortalOptions, ...identity }; this.localStream = null; this.peerConnectionConfig = { 'iceServers': [ { 'urls': 'stun:stun.stunprotocol.org:3478' }, { 'urls': 'stun:stun.l.google.com:19302' }, ], }; this.constraints = { video: identity.video, audio: identity.audio, }; this.participants = []; this.isNegotiating = []; this.logger.log('Initializing video room'); this.init(); } /** * Initialize local video */ init() { Iif (!this.constraints.video && !this.constraints.audio) { this.requestPeerVideo(); return; } Iif (typeof navigator != 'undefined' && navigator.mediaDevices.getUserMedia) { navigator.mediaDevices.getUserMedia(this.constraints).then(this.getUserMediaSuccess.bind(this)).catch(this.errorHandler.bind(this)); return true; } else { this.logger.error('Your browser does not support getUserMedia API'); return false; } } shareVideo(signal, isCaller = true) { Iif (!this.identity.shouldBroadcast && isCaller && !signal.isBroadcasting) { console.log("Refusing to call, denied broadcast request"); return; } const rtcConnection = new PeerConnection(this.peerConnectionConfig); rtcConnection.onicecandidate = (event) => { if (event.candidate != null) { this.channel.publish('system:portal_candidate', { 'from': this.channel.uuid, 'to': signal.from, 'ice': event.candidate, }); } }; rtcConnection.ontrack = (event) => { if (event.track.kind != 'video') { return; } this.participants[signal.from].streams = event.streams; if (typeof this.identity.onParticipantJoined == 'function') { this.identity.onParticipantJoined(signal.from, event.streams[0]); } }; rtcConnection.onsignalingstatechange = (e) => { // Workaround for Chrome: skip nested negotiations this.isNegotiating[signal.from] = (rtcConnection.signalingState != 'stable'); }; if (this.localStream) { this.localStream.getTracks().forEach((track) => { rtcConnection.addTrack(track, this.localStream); }); } this.isNegotiating[signal.from] = false; rtcConnection.onnegotiationneeded = async () => { await this.sendVideoOffer(signal, rtcConnection, isCaller); }; this.participants[signal.from] = { rtc: rtcConnection, }; } async sendVideoOffer(signal, rtcConnection, isCaller) { if (!isCaller) { return; } if (this.isNegotiating[signal.from]) { console.log('SKIP nested negotiations'); return; } this.isNegotiating[signal.from] = true; const description = await rtcConnection.createOffer(); await rtcConnection.setLocalDescription(description); console.log('Making offer'); // Send a call offer this.channel.publish('system:video_offer', { 'from': this.channel.uuid, 'to': signal.from, 'sdp': rtcConnection.localDescription, }); } removeParticipant(uuid) { delete this.participants[uuid]; if (typeof this.identity.onParticipantLeft == 'function') { this.identity.onParticipantLeft(uuid); } } addIceCandidate(signal) { const rtcConnection = this.participants[signal.from].rtc; rtcConnection.addIceCandidate(new IceCandidate(signal.ice)); } createAnswer(signal) { return new Promise(async (resolve, reject) => { Iif (!this.participants[signal.from] || !this.participants[signal.from].rtc) { console.log('Starting call in createAnswer'); this.shareVideo(signal, false); } await this.participants[signal.from].rtc.setRemoteDescription(new SessionDescription(signal.sdp)); // Only create answers in response to offers if (signal.sdp.type == 'offer') { this.logger.log('Got an offer from ' + signal.from, signal); const description = await this.participants[signal.from].rtc.createAnswer(); await this.participants[signal.from].rtc.setLocalDescription(description); this.channel.publish('system:video_answer', { 'from': this.channel.uuid, 'to': signal.from, 'sdp': this.participants[signal.from].rtc.localDescription, }); resolve(); } else E{ this.logger.log('Got an asnwer from ' + signal.from); resolve(); } }); } handleAnswer(signal){ this.participants[signal.from].rtc.setRemoteDescription(new SessionDescription(signal.sdp)); } /** * Callback to handle local stream * @param {*} stream */ getUserMediaSuccess(stream) { this.localStream = stream; if (typeof this.identity.onLocalVideo == 'function') { this.identity.onLocalVideo(stream, this); } this.requestPeerVideo(); } requestPeerVideo() { var eventName = 'system:portal_broadcaster'; Iif(!this.identity.shouldBroadcast){ eventName = 'system:portal_watcher'; } this.channel.publish(eventName, { from: this.channel.uuid, isBroadcasting: this.identity.shouldBroadcast }); } requestOfferFromPeer(){ this.channel.publish("system:video_request", { from: this.channel.uuid, isBroadcasting: this.identity.shouldBroadcast }); } errorHandler(e) { this.logger.error('Portal error', e); } } |