mirror of https://github.com/OpenVidu/openvidu.git
264 lines
11 KiB
JavaScript
264 lines
11 KiB
JavaScript
"use strict";
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/*
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* (C) Copyright 2017-2018 OpenVidu (https://openvidu.io/)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return function (d, b) {
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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exports.__esModule = true;
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var freeice = require("freeice");
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var uuid = require("uuid");
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var platform = require("platform");
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var WebRtcPeer = /** @class */ (function () {
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function WebRtcPeer(configuration) {
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var _this = this;
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this.configuration = configuration;
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this.remoteCandidatesQueue = [];
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this.localCandidatesQueue = [];
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this.iceCandidateList = [];
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this.candidategatheringdone = false;
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this.configuration.iceServers = (!!this.configuration.iceServers && this.configuration.iceServers.length > 0) ? this.configuration.iceServers : freeice();
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this.pc = new RTCPeerConnection({ iceServers: this.configuration.iceServers });
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this.id = !!configuration.id ? configuration.id : uuid.v4();
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this.pc.onicecandidate = function (event) {
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var candidate = event.candidate;
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if (candidate) {
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_this.localCandidatesQueue.push({ candidate: candidate.candidate });
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_this.candidategatheringdone = false;
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_this.configuration.onicecandidate(event.candidate);
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}
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else if (!_this.candidategatheringdone) {
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_this.candidategatheringdone = true;
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}
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};
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this.pc.onsignalingstatechange = function () {
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if (_this.pc.signalingState === 'stable') {
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while (_this.iceCandidateList.length > 0) {
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_this.pc.addIceCandidate(_this.iceCandidateList.shift());
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}
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}
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};
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this.start();
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}
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/**
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* This function creates the RTCPeerConnection object taking into account the
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* properties received in the constructor. It starts the SDP negotiation
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* process: generates the SDP offer and invokes the onsdpoffer callback. This
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* callback is expected to send the SDP offer, in order to obtain an SDP
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* answer from another peer.
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*/
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WebRtcPeer.prototype.start = function () {
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var _this = this;
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return new Promise(function (resolve, reject) {
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if (_this.pc.signalingState === 'closed') {
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reject('The peer connection object is in "closed" state. This is most likely due to an invocation of the dispose method before accepting in the dialogue');
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}
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if (!!_this.configuration.mediaStream) {
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_this.pc.addStream(_this.configuration.mediaStream);
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}
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// [Hack] https://code.google.com/p/chromium/issues/detail?id=443558
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if (_this.configuration.mode === 'sendonly' &&
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(platform.name === 'Chrome' && platform.version.toString().substring(0, 2) === '39')) {
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_this.configuration.mode = 'sendrecv';
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}
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resolve();
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});
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};
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/**
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* This method frees the resources used by WebRtcPeer
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*/
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WebRtcPeer.prototype.dispose = function () {
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var _this = this;
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console.debug('Disposing WebRtcPeer');
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try {
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if (this.pc) {
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if (this.pc.signalingState === 'closed') {
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return;
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}
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this.remoteCandidatesQueue = [];
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this.localCandidatesQueue = [];
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this.pc.getLocalStreams().forEach(function (str) {
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_this.streamStop(str);
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});
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// FIXME This is not yet implemented in firefox
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// if(videoStream) pc.removeStream(videoStream);
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// if(audioStream) pc.removeStream(audioStream);
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this.pc.close();
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}
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}
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catch (err) {
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console.warn('Exception disposing webrtc peer ' + err);
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}
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};
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/**
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* 1) Function that creates an offer, sets it as local description and returns the offer param
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* to send to OpenVidu Server (will be the remote description of other peer)
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*/
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WebRtcPeer.prototype.generateOffer = function () {
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var _this = this;
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return new Promise(function (resolve, reject) {
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var offerAudio, offerVideo = true;
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// Constraints must have both blocks
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if (!!_this.configuration.mediaConstraints) {
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offerAudio = (typeof _this.configuration.mediaConstraints.audio === 'boolean') ?
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_this.configuration.mediaConstraints.audio : true;
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offerVideo = (typeof _this.configuration.mediaConstraints.video === 'boolean') ?
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_this.configuration.mediaConstraints.video : true;
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}
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var constraints = {
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offerToReceiveAudio: +(_this.configuration.mode !== 'sendonly' && offerAudio),
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offerToReceiveVideo: +(_this.configuration.mode !== 'sendonly' && offerVideo)
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};
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console.debug('RTCPeerConnection constraints: ' + JSON.stringify(constraints));
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_this.pc.createOffer(constraints).then(function (offer) {
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console.debug('Created SDP offer');
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return _this.pc.setLocalDescription(offer);
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}).then(function () {
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var localDescription = _this.pc.localDescription;
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if (!!localDescription) {
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console.debug('Local description set', localDescription.sdp);
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resolve(localDescription.sdp);
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}
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else {
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reject('Local description is not defined');
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}
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})["catch"](function (error) { return reject(error); });
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});
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};
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/**
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* 2) Function to invoke when a SDP offer is received. Sets it as remote description,
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* generates and answer and returns it to send it to OpenVidu Server
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*/
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WebRtcPeer.prototype.processOffer = function (sdpOffer) {
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var _this = this;
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return new Promise(function (resolve, reject) {
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var offer = {
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type: 'offer',
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sdp: sdpOffer
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};
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console.debug('SDP offer received, setting remote description');
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if (_this.pc.signalingState === 'closed') {
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reject('PeerConnection is closed');
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}
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_this.pc.setRemoteDescription(offer)
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.then(function () {
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return _this.pc.createAnswer();
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}).then(function (answer) {
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console.debug('Created SDP answer');
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return _this.pc.setLocalDescription(answer);
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}).then(function () {
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var localDescription = _this.pc.localDescription;
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if (!!localDescription) {
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console.debug('Local description set', localDescription.sdp);
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resolve(localDescription.sdp);
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}
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else {
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reject('Local description is not defined');
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}
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})["catch"](function (error) { return reject(error); });
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});
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};
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/**
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* 3) Function invoked when a SDP answer is received. Final step in SDP negotiation, the peer
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* just needs to set the answer as its remote description
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*/
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WebRtcPeer.prototype.processAnswer = function (sdpAnswer) {
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var _this = this;
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return new Promise(function (resolve, reject) {
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var answer = {
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type: 'answer',
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sdp: sdpAnswer
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};
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console.debug('SDP answer received, setting remote description');
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if (_this.pc.signalingState === 'closed') {
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reject('RTCPeerConnection is closed');
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}
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_this.pc.setRemoteDescription(answer).then(function () { return resolve(); })["catch"](function (error) { return reject(error); });
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});
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};
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/**
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* Callback function invoked when an ICE candidate is received
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*/
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WebRtcPeer.prototype.addIceCandidate = function (iceCandidate) {
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var _this = this;
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return new Promise(function (resolve, reject) {
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console.debug('Remote ICE candidate received', iceCandidate);
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_this.remoteCandidatesQueue.push(iceCandidate);
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switch (_this.pc.signalingState) {
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case 'closed':
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reject(new Error('PeerConnection object is closed'));
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break;
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case 'stable':
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if (!!_this.pc.remoteDescription) {
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_this.pc.addIceCandidate(iceCandidate).then(function () { return resolve(); })["catch"](function (error) { return reject(error); });
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}
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break;
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default:
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_this.iceCandidateList.push(iceCandidate);
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resolve();
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}
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});
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};
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WebRtcPeer.prototype.streamStop = function (stream) {
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stream.getTracks().forEach(function (track) {
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track.stop();
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stream.removeTrack(track);
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});
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};
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return WebRtcPeer;
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}());
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exports.WebRtcPeer = WebRtcPeer;
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var WebRtcPeerRecvonly = /** @class */ (function (_super) {
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__extends(WebRtcPeerRecvonly, _super);
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function WebRtcPeerRecvonly(configuration) {
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var _this = this;
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configuration.mode = 'recvonly';
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_this = _super.call(this, configuration) || this;
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return _this;
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}
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return WebRtcPeerRecvonly;
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}(WebRtcPeer));
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exports.WebRtcPeerRecvonly = WebRtcPeerRecvonly;
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var WebRtcPeerSendonly = /** @class */ (function (_super) {
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__extends(WebRtcPeerSendonly, _super);
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function WebRtcPeerSendonly(configuration) {
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var _this = this;
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configuration.mode = 'sendonly';
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_this = _super.call(this, configuration) || this;
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return _this;
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}
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return WebRtcPeerSendonly;
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}(WebRtcPeer));
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exports.WebRtcPeerSendonly = WebRtcPeerSendonly;
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var WebRtcPeerSendrecv = /** @class */ (function (_super) {
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__extends(WebRtcPeerSendrecv, _super);
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function WebRtcPeerSendrecv(configuration) {
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var _this = this;
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configuration.mode = 'sendrecv';
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_this = _super.call(this, configuration) || this;
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return _this;
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}
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return WebRtcPeerSendrecv;
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}(WebRtcPeer));
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exports.WebRtcPeerSendrecv = WebRtcPeerSendrecv;
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//# sourceMappingURL=WebRtcPeer.js.map
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