define([], function() {
return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-/*
- * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
- /* eslint-env node */
-'use strict';
-
-var SDPUtils = require('sdp');
-
-function writeMediaSection(transceiver, caps, type, stream, dtlsRole) {
- var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
-
- // Map ICE parameters (ufrag, pwd) to SDP.
- sdp += SDPUtils.writeIceParameters(
- transceiver.iceGatherer.getLocalParameters());
-
- // Map DTLS parameters to SDP.
- sdp += SDPUtils.writeDtlsParameters(
- transceiver.dtlsTransport.getLocalParameters(),
- type === 'offer' ? 'actpass' : dtlsRole || 'active');
-
- sdp += 'a=mid:' + transceiver.mid + '\r\n';
-
- if (transceiver.rtpSender && transceiver.rtpReceiver) {
- sdp += 'a=sendrecv\r\n';
- } else if (transceiver.rtpSender) {
- sdp += 'a=sendonly\r\n';
- } else if (transceiver.rtpReceiver) {
- sdp += 'a=recvonly\r\n';
- } else {
- sdp += 'a=inactive\r\n';
- }
-
- if (transceiver.rtpSender) {
- var trackId = transceiver.rtpSender._initialTrackId ||
- transceiver.rtpSender.track.id;
- transceiver.rtpSender._initialTrackId = trackId;
- // spec.
- var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +
- trackId + '\r\n';
- sdp += 'a=' + msid;
- // for Chrome. Legacy should no longer be required.
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
- ' ' + msid;
-
- // RTX
- if (transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
- ' ' + msid;
- sdp += 'a=ssrc-group:FID ' +
- transceiver.sendEncodingParameters[0].ssrc + ' ' +
- transceiver.sendEncodingParameters[0].rtx.ssrc +
- '\r\n';
- }
- }
- // FIXME: this should be written by writeRtpDescription.
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
- ' cname:' + SDPUtils.localCName + '\r\n';
- if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
- ' cname:' + SDPUtils.localCName + '\r\n';
- }
- return sdp;
-}
-
-// Edge does not like
-// 1) stun: filtered after 14393 unless ?transport=udp is present
-// 2) turn: that does not have all of turn:host:port?transport=udp
-// 3) turn: with ipv6 addresses
-// 4) turn: occurring muliple times
-function filterIceServers(iceServers, edgeVersion) {
- var hasTurn = false;
- iceServers = JSON.parse(JSON.stringify(iceServers));
- return iceServers.filter(function(server) {
- if (server && (server.urls || server.url)) {
- var urls = server.urls || server.url;
- if (server.url && !server.urls) {
- console.warn('RTCIceServer.url is deprecated! Use urls instead.');
- }
- var isString = typeof urls === 'string';
- if (isString) {
- urls = [urls];
- }
- urls = urls.filter(function(url) {
- var validTurn = url.indexOf('turn:') === 0 &&
- url.indexOf('transport=udp') !== -1 &&
- url.indexOf('turn:[') === -1 &&
- !hasTurn;
-
- if (validTurn) {
- hasTurn = true;
- return true;
- }
- return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&
- url.indexOf('?transport=udp') === -1;
- });
-
- delete server.url;
- server.urls = isString ? urls[0] : urls;
- return !!urls.length;
- }
- });
-}
-
-// Determines the intersection of local and remote capabilities.
-function getCommonCapabilities(localCapabilities, remoteCapabilities) {
- var commonCapabilities = {
- codecs: [],
- headerExtensions: [],
- fecMechanisms: []
- };
-
- var findCodecByPayloadType = function(pt, codecs) {
- pt = parseInt(pt, 10);
- for (var i = 0; i < codecs.length; i++) {
- if (codecs[i].payloadType === pt ||
- codecs[i].preferredPayloadType === pt) {
- return codecs[i];
- }
- }
- };
-
- var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {
- var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);
- var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);
- return lCodec && rCodec &&
- lCodec.name.toLowerCase() === rCodec.name.toLowerCase();
- };
-
- localCapabilities.codecs.forEach(function(lCodec) {
- for (var i = 0; i < remoteCapabilities.codecs.length; i++) {
- var rCodec = remoteCapabilities.codecs[i];
- if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&
- lCodec.clockRate === rCodec.clockRate) {
- if (lCodec.name.toLowerCase() === 'rtx' &&
- lCodec.parameters && rCodec.parameters.apt) {
- // for RTX we need to find the local rtx that has a apt
- // which points to the same local codec as the remote one.
- if (!rtxCapabilityMatches(lCodec, rCodec,
- localCapabilities.codecs, remoteCapabilities.codecs)) {
- continue;
- }
- }
- rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy
- // number of channels is the highest common number of channels
- rCodec.numChannels = Math.min(lCodec.numChannels,
- rCodec.numChannels);
- // push rCodec so we reply with offerer payload type
- commonCapabilities.codecs.push(rCodec);
-
- // determine common feedback mechanisms
- rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {
- for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {
- if (lCodec.rtcpFeedback[j].type === fb.type &&
- lCodec.rtcpFeedback[j].parameter === fb.parameter) {
- return true;
- }
- }
- return false;
- });
- // FIXME: also need to determine .parameters
- // see https://github.com/openpeer/ortc/issues/569
- break;
- }
- }
- });
-
- localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {
- for (var i = 0; i < remoteCapabilities.headerExtensions.length;
- i++) {
- var rHeaderExtension = remoteCapabilities.headerExtensions[i];
- if (lHeaderExtension.uri === rHeaderExtension.uri) {
- commonCapabilities.headerExtensions.push(rHeaderExtension);
- break;
- }
- }
- });
-
- // FIXME: fecMechanisms
- return commonCapabilities;
-}
-
-// is action=setLocalDescription with type allowed in signalingState
-function isActionAllowedInSignalingState(action, type, signalingState) {
- return {
- offer: {
- setLocalDescription: ['stable', 'have-local-offer'],
- setRemoteDescription: ['stable', 'have-remote-offer']
- },
- answer: {
- setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],
- setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']
+ /*
+ * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree.
+ */
+ /* eslint-env node */
+ 'use strict';
+
+ var SDPUtils = require('sdp');
+
+ function fixStatsType(stat) {
+ return {
+ inboundrtp: 'inbound-rtp',
+ outboundrtp: 'outbound-rtp',
+ candidatepair: 'candidate-pair',
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ }[stat.type] || stat.type;
}
- }[type][action].indexOf(signalingState) !== -1;
-}
-
-function maybeAddCandidate(iceTransport, candidate) {
- // Edge's internal representation adds some fields therefore
- // not all fieldѕ are taken into account.
- var alreadyAdded = iceTransport.getRemoteCandidates()
- .find(function(remoteCandidate) {
- return candidate.foundation === remoteCandidate.foundation &&
- candidate.ip === remoteCandidate.ip &&
- candidate.port === remoteCandidate.port &&
- candidate.priority === remoteCandidate.priority &&
- candidate.protocol === remoteCandidate.protocol &&
- candidate.type === remoteCandidate.type;
- });
- if (!alreadyAdded) {
- iceTransport.addRemoteCandidate(candidate);
- }
- return !alreadyAdded;
-}
-
-
-function makeError(name, description) {
- var e = new Error(description);
- e.name = name;
- // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names
- e.code = {
- NotSupportedError: 9,
- InvalidStateError: 11,
- InvalidAccessError: 15,
- TypeError: undefined,
- OperationError: undefined
- }[name];
- return e;
-}
-
-module.exports = function(window, edgeVersion) {
- // https://w3c.github.io/mediacapture-main/#mediastream
- // Helper function to add the track to the stream and
- // dispatch the event ourselves.
- function addTrackToStreamAndFireEvent(track, stream) {
- stream.addTrack(track);
- stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',
- {track: track}));
- }
-
- function removeTrackFromStreamAndFireEvent(track, stream) {
- stream.removeTrack(track);
- stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',
- {track: track}));
- }
-
- function fireAddTrack(pc, track, receiver, streams) {
- var trackEvent = new Event('track');
- trackEvent.track = track;
- trackEvent.receiver = receiver;
- trackEvent.transceiver = {receiver: receiver};
- trackEvent.streams = streams;
- window.setTimeout(function() {
- pc._dispatchEvent('track', trackEvent);
- });
- }
-
- var RTCPeerConnection = function(config) {
- var pc = this;
-
- var _eventTarget = document.createDocumentFragment();
- ['addEventListener', 'removeEventListener', 'dispatchEvent']
- .forEach(function(method) {
- pc[method] = _eventTarget[method].bind(_eventTarget);
- });
-
- this.canTrickleIceCandidates = null;
- this.needNegotiation = false;
+ function writeMediaSection(transceiver, caps, type, stream, dtlsRole) {
+ var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
- this.localStreams = [];
- this.remoteStreams = [];
+ // Map ICE parameters (ufrag, pwd) to SDP.
+ sdp += SDPUtils.writeIceParameters(
+ transceiver.iceGatherer.getLocalParameters());
- this.localDescription = null;
- this.remoteDescription = null;
+ // Map DTLS parameters to SDP.
+ sdp += SDPUtils.writeDtlsParameters(
+ transceiver.dtlsTransport.getLocalParameters(),
+ type === 'offer' ? 'actpass' : dtlsRole || 'active');
- this.signalingState = 'stable';
- this.iceConnectionState = 'new';
- this.connectionState = 'new';
- this.iceGatheringState = 'new';
+ sdp += 'a=mid:' + transceiver.mid + '\r\n';
- config = JSON.parse(JSON.stringify(config || {}));
-
- this.usingBundle = config.bundlePolicy === 'max-bundle';
- if (config.rtcpMuxPolicy === 'negotiate') {
- throw(makeError('NotSupportedError',
- 'rtcpMuxPolicy \'negotiate\' is not supported'));
- } else if (!config.rtcpMuxPolicy) {
- config.rtcpMuxPolicy = 'require';
- }
-
- switch (config.iceTransportPolicy) {
- case 'all':
- case 'relay':
- break;
- default:
- config.iceTransportPolicy = 'all';
- break;
- }
+ if (transceiver.rtpSender && transceiver.rtpReceiver) {
+ sdp += 'a=sendrecv\r\n';
+ } else if (transceiver.rtpSender) {
+ sdp += 'a=sendonly\r\n';
+ } else if (transceiver.rtpReceiver) {
+ sdp += 'a=recvonly\r\n';
+ } else {
+ sdp += 'a=inactive\r\n';
+ }
- switch (config.bundlePolicy) {
- case 'balanced':
- case 'max-compat':
- case 'max-bundle':
- break;
- default:
- config.bundlePolicy = 'balanced';
- break;
+ if (transceiver.rtpSender) {
+ var trackId = transceiver.rtpSender._initialTrackId ||
+ transceiver.rtpSender.track.id;
+ transceiver.rtpSender._initialTrackId = trackId;
+ // spec.
+ var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +
+ trackId + '\r\n';
+ sdp += 'a=' + msid;
+ // for Chrome. Legacy should no longer be required.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' ' + msid;
+
+ // RTX
+ if (transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' ' + msid;
+ sdp += 'a=ssrc-group:FID ' +
+ transceiver.sendEncodingParameters[0].ssrc + ' ' +
+ transceiver.sendEncodingParameters[0].rtx.ssrc +
+ '\r\n';
+ }
+ }
+ // FIXME: this should be written by writeRtpDescription.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ }
+ return sdp;
}
- config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);
+ // Edge does not like
+ // 1) stun: filtered after 14393 unless ?transport=udp is present
+ // 2) turn: that does not have all of turn:host:port?transport=udp
+ // 3) turn: with ipv6 addresses
+ // 4) turn: occurring muliple times
+ function filterIceServers(iceServers, edgeVersion) {
+ var hasTurn = false;
+ iceServers = JSON.parse(JSON.stringify(iceServers));
+ return iceServers.filter(function(server) {
+ if (server && (server.urls || server.url)) {
+ var urls = server.urls || server.url;
+ if (server.url && !server.urls) {
+ console.warn('RTCIceServer.url is deprecated! Use urls instead.');
+ }
+ var isString = typeof urls === 'string';
+ if (isString) {
+ urls = [urls];
+ }
+ urls = urls.filter(function(url) {
+ var validTurn = url.indexOf('turn:') === 0 &&
+ url.indexOf('transport=udp') !== -1 &&
+ url.indexOf('turn:[') === -1 &&
+ !hasTurn;
+
+ if (validTurn) {
+ hasTurn = true;
+ return true;
+ }
+ return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&
+ url.indexOf('?transport=udp') === -1;
+ });
- this._iceGatherers = [];
- if (config.iceCandidatePoolSize) {
- for (var i = config.iceCandidatePoolSize; i > 0; i--) {
- this._iceGatherers.push(new window.RTCIceGatherer({
- iceServers: config.iceServers,
- gatherPolicy: config.iceTransportPolicy
- }));
- }
- } else {
- config.iceCandidatePoolSize = 0;
+ delete server.url;
+ server.urls = isString ? urls[0] : urls;
+ return !!urls.length;
+ }
+ });
}
- this._config = config;
-
- // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
- // everything that is needed to describe a SDP m-line.
- this.transceivers = [];
+ // Determines the intersection of local and remote capabilities.
+ function getCommonCapabilities(localCapabilities, remoteCapabilities) {
+ var commonCapabilities = {
+ codecs: [],
+ headerExtensions: [],
+ fecMechanisms: []
+ };
- this._sdpSessionId = SDPUtils.generateSessionId();
- this._sdpSessionVersion = 0;
+ var findCodecByPayloadType = function(pt, codecs) {
+ pt = parseInt(pt, 10);
+ for (var i = 0; i < codecs.length; i++) {
+ if (codecs[i].payloadType === pt ||
+ codecs[i].preferredPayloadType === pt) {
+ return codecs[i];
+ }
+ }
+ };
- this._dtlsRole = undefined; // role for a=setup to use in answers.
+ var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {
+ var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);
+ var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);
+ return lCodec && rCodec &&
+ lCodec.name.toLowerCase() === rCodec.name.toLowerCase();
+ };
- this._isClosed = false;
- };
+ localCapabilities.codecs.forEach(function(lCodec) {
+ for (var i = 0; i < remoteCapabilities.codecs.length; i++) {
+ var rCodec = remoteCapabilities.codecs[i];
+ if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&
+ lCodec.clockRate === rCodec.clockRate) {
+ if (lCodec.name.toLowerCase() === 'rtx' &&
+ lCodec.parameters && rCodec.parameters.apt) {
+ // for RTX we need to find the local rtx that has a apt
+ // which points to the same local codec as the remote one.
+ if (!rtxCapabilityMatches(lCodec, rCodec,
+ localCapabilities.codecs, remoteCapabilities.codecs)) {
+ continue;
+ }
+ }
+ rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy
+ // number of channels is the highest common number of channels
+ rCodec.numChannels = Math.min(lCodec.numChannels,
+ rCodec.numChannels);
+ // push rCodec so we reply with offerer payload type
+ commonCapabilities.codecs.push(rCodec);
+
+ // determine common feedback mechanisms
+ rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {
+ for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {
+ if (lCodec.rtcpFeedback[j].type === fb.type &&
+ lCodec.rtcpFeedback[j].parameter === fb.parameter) {
+ return true;
+ }
+ }
+ return false;
+ });
+ // FIXME: also need to determine .parameters
+ // see https://github.com/openpeer/ortc/issues/569
+ break;
+ }
+ }
+ });
- // set up event handlers on prototype
- RTCPeerConnection.prototype.onicecandidate = null;
- RTCPeerConnection.prototype.onaddstream = null;
- RTCPeerConnection.prototype.ontrack = null;
- RTCPeerConnection.prototype.onremovestream = null;
- RTCPeerConnection.prototype.onsignalingstatechange = null;
- RTCPeerConnection.prototype.oniceconnectionstatechange = null;
- RTCPeerConnection.prototype.onconnectionstatechange = null;
- RTCPeerConnection.prototype.onicegatheringstatechange = null;
- RTCPeerConnection.prototype.onnegotiationneeded = null;
- RTCPeerConnection.prototype.ondatachannel = null;
+ localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {
+ for (var i = 0; i < remoteCapabilities.headerExtensions.length;
+ i++) {
+ var rHeaderExtension = remoteCapabilities.headerExtensions[i];
+ if (lHeaderExtension.uri === rHeaderExtension.uri) {
+ commonCapabilities.headerExtensions.push(rHeaderExtension);
+ break;
+ }
+ }
+ });
- RTCPeerConnection.prototype._dispatchEvent = function(name, event) {
- if (this._isClosed) {
- return;
- }
- this.dispatchEvent(event);
- if (typeof this['on' + name] === 'function') {
- this['on' + name](event);
- }
- };
-
- RTCPeerConnection.prototype._emitGatheringStateChange = function() {
- var event = new Event('icegatheringstatechange');
- this._dispatchEvent('icegatheringstatechange', event);
- };
-
- RTCPeerConnection.prototype.getConfiguration = function() {
- return this._config;
- };
-
- RTCPeerConnection.prototype.getLocalStreams = function() {
- return this.localStreams;
- };
-
- RTCPeerConnection.prototype.getRemoteStreams = function() {
- return this.remoteStreams;
- };
-
- // internal helper to create a transceiver object.
- // (which is not yet the same as the WebRTC 1.0 transceiver)
- RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {
- var hasBundleTransport = this.transceivers.length > 0;
- var transceiver = {
- track: null,
- iceGatherer: null,
- iceTransport: null,
- dtlsTransport: null,
- localCapabilities: null,
- remoteCapabilities: null,
- rtpSender: null,
- rtpReceiver: null,
- kind: kind,
- mid: null,
- sendEncodingParameters: null,
- recvEncodingParameters: null,
- stream: null,
- associatedRemoteMediaStreams: [],
- wantReceive: true
- };
- if (this.usingBundle && hasBundleTransport) {
- transceiver.iceTransport = this.transceivers[0].iceTransport;
- transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;
- } else {
- var transports = this._createIceAndDtlsTransports();
- transceiver.iceTransport = transports.iceTransport;
- transceiver.dtlsTransport = transports.dtlsTransport;
+ // FIXME: fecMechanisms
+ return commonCapabilities;
}
- if (!doNotAdd) {
- this.transceivers.push(transceiver);
+
+ // is action=setLocalDescription with type allowed in signalingState
+ function isActionAllowedInSignalingState(action, type, signalingState) {
+ return {
+ offer: {
+ setLocalDescription: ['stable', 'have-local-offer'],
+ setRemoteDescription: ['stable', 'have-remote-offer']
+ },
+ answer: {
+ setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],
+ setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']
+ }
+ }[type][action].indexOf(signalingState) !== -1;
}
- return transceiver;
- };
- RTCPeerConnection.prototype.addTrack = function(track, stream) {
- if (this._isClosed) {
- throw makeError('InvalidStateError',
- 'Attempted to call addTrack on a closed peerconnection.');
+ function maybeAddCandidate(iceTransport, candidate) {
+ // Edge's internal representation adds some fields therefore
+ // not all fieldѕ are taken into account.
+ var alreadyAdded = iceTransport.getRemoteCandidates()
+ .find(function(remoteCandidate) {
+ return candidate.foundation === remoteCandidate.foundation &&
+ candidate.ip === remoteCandidate.ip &&
+ candidate.port === remoteCandidate.port &&
+ candidate.priority === remoteCandidate.priority &&
+ candidate.protocol === remoteCandidate.protocol &&
+ candidate.type === remoteCandidate.type;
+ });
+ if (!alreadyAdded) {
+ iceTransport.addRemoteCandidate(candidate);
+ }
+ return !alreadyAdded;
}
- var alreadyExists = this.transceivers.find(function(s) {
- return s.track === track;
- });
- if (alreadyExists) {
- throw makeError('InvalidAccessError', 'Track already exists.');
+ function makeError(name, description) {
+ var e = new Error(description);
+ e.name = name;
+ // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names
+ e.code = {
+ NotSupportedError: 9,
+ InvalidStateError: 11,
+ InvalidAccessError: 15,
+ TypeError: undefined,
+ OperationError: undefined
+ }[name];
+ return e;
}
- var transceiver;
- for (var i = 0; i < this.transceivers.length; i++) {
- if (!this.transceivers[i].track &&
- this.transceivers[i].kind === track.kind) {
- transceiver = this.transceivers[i];
+ module.exports = function(window, edgeVersion) {
+ // https://w3c.github.io/mediacapture-main/#mediastream
+ // Helper function to add the track to the stream and
+ // dispatch the event ourselves.
+ function addTrackToStreamAndFireEvent(track, stream) {
+ stream.addTrack(track);
+ stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',
+ {track: track}));
}
- }
- if (!transceiver) {
- transceiver = this._createTransceiver(track.kind);
- }
-
- this._maybeFireNegotiationNeeded();
- if (this.localStreams.indexOf(stream) === -1) {
- this.localStreams.push(stream);
- }
+ function removeTrackFromStreamAndFireEvent(track, stream) {
+ stream.removeTrack(track);
+ stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',
+ {track: track}));
+ }
- transceiver.track = track;
- transceiver.stream = stream;
- transceiver.rtpSender = new window.RTCRtpSender(track,
- transceiver.dtlsTransport);
- return transceiver.rtpSender;
- };
-
- RTCPeerConnection.prototype.addStream = function(stream) {
- var pc = this;
- if (edgeVersion >= 15025) {
- stream.getTracks().forEach(function(track) {
- pc.addTrack(track, stream);
- });
- } else {
- // Clone is necessary for local demos mostly, attaching directly
- // to two different senders does not work (build 10547).
- // Fixed in 15025 (or earlier)
- var clonedStream = stream.clone();
- stream.getTracks().forEach(function(track, idx) {
- var clonedTrack = clonedStream.getTracks()[idx];
- track.addEventListener('enabled', function(event) {
- clonedTrack.enabled = event.enabled;
+ function fireAddTrack(pc, track, receiver, streams) {
+ var trackEvent = new Event('track');
+ trackEvent.track = track;
+ trackEvent.receiver = receiver;
+ trackEvent.transceiver = {receiver: receiver};
+ trackEvent.streams = streams;
+ window.setTimeout(function() {
+ pc._dispatchEvent('track', trackEvent);
});
- });
- clonedStream.getTracks().forEach(function(track) {
- pc.addTrack(track, clonedStream);
- });
- }
- };
+ }
- RTCPeerConnection.prototype.removeTrack = function(sender) {
- if (this._isClosed) {
- throw makeError('InvalidStateError',
- 'Attempted to call removeTrack on a closed peerconnection.');
- }
+ var RTCPeerConnection = function(config) {
+ var pc = this;
- if (!(sender instanceof window.RTCRtpSender)) {
- throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +
- 'does not implement interface RTCRtpSender.');
- }
+ var _eventTarget = document.createDocumentFragment();
+ ['addEventListener', 'removeEventListener', 'dispatchEvent']
+ .forEach(function(method) {
+ pc[method] = _eventTarget[method].bind(_eventTarget);
+ });
- var transceiver = this.transceivers.find(function(t) {
- return t.rtpSender === sender;
- });
+ this.canTrickleIceCandidates = null;
- if (!transceiver) {
- throw makeError('InvalidAccessError',
- 'Sender was not created by this connection.');
- }
- var stream = transceiver.stream;
-
- transceiver.rtpSender.stop();
- transceiver.rtpSender = null;
- transceiver.track = null;
- transceiver.stream = null;
-
- // remove the stream from the set of local streams
- var localStreams = this.transceivers.map(function(t) {
- return t.stream;
- });
- if (localStreams.indexOf(stream) === -1 &&
- this.localStreams.indexOf(stream) > -1) {
- this.localStreams.splice(this.localStreams.indexOf(stream), 1);
- }
+ this.needNegotiation = false;
- this._maybeFireNegotiationNeeded();
- };
+ this.localStreams = [];
+ this.remoteStreams = [];
- RTCPeerConnection.prototype.removeStream = function(stream) {
- var pc = this;
- stream.getTracks().forEach(function(track) {
- var sender = pc.getSenders().find(function(s) {
- return s.track === track;
- });
- if (sender) {
- pc.removeTrack(sender);
- }
- });
- };
-
- RTCPeerConnection.prototype.getSenders = function() {
- return this.transceivers.filter(function(transceiver) {
- return !!transceiver.rtpSender;
- })
- .map(function(transceiver) {
- return transceiver.rtpSender;
- });
- };
-
- RTCPeerConnection.prototype.getReceivers = function() {
- return this.transceivers.filter(function(transceiver) {
- return !!transceiver.rtpReceiver;
- })
- .map(function(transceiver) {
- return transceiver.rtpReceiver;
- });
- };
+ this._localDescription = null;
+ this._remoteDescription = null;
+ this.signalingState = 'stable';
+ this.iceConnectionState = 'new';
+ this.connectionState = 'new';
+ this.iceGatheringState = 'new';
- RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,
- usingBundle) {
- var pc = this;
- if (usingBundle && sdpMLineIndex > 0) {
- return this.transceivers[0].iceGatherer;
- } else if (this._iceGatherers.length) {
- return this._iceGatherers.shift();
- }
- var iceGatherer = new window.RTCIceGatherer({
- iceServers: this._config.iceServers,
- gatherPolicy: this._config.iceTransportPolicy
- });
- Object.defineProperty(iceGatherer, 'state',
- {value: 'new', writable: true}
- );
-
- this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];
- this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {
- var end = !event.candidate || Object.keys(event.candidate).length === 0;
- // polyfill since RTCIceGatherer.state is not implemented in
- // Edge 10547 yet.
- iceGatherer.state = end ? 'completed' : 'gathering';
- if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {
- pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);
- }
- };
- iceGatherer.addEventListener('localcandidate',
- this.transceivers[sdpMLineIndex].bufferCandidates);
- return iceGatherer;
- };
-
- // start gathering from an RTCIceGatherer.
- RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {
- var pc = this;
- var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
- if (iceGatherer.onlocalcandidate) {
- return;
- }
- var bufferedCandidateEvents =
- this.transceivers[sdpMLineIndex].bufferedCandidateEvents;
- this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;
- iceGatherer.removeEventListener('localcandidate',
- this.transceivers[sdpMLineIndex].bufferCandidates);
- iceGatherer.onlocalcandidate = function(evt) {
- if (pc.usingBundle && sdpMLineIndex > 0) {
- // if we know that we use bundle we can drop candidates with
- // Ñ•dpMLineIndex > 0. If we don't do this then our state gets
- // confused since we dispose the extra ice gatherer.
- return;
- }
- var event = new Event('icecandidate');
- event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};
-
- var cand = evt.candidate;
- // Edge emits an empty object for RTCIceCandidateComplete‥
- var end = !cand || Object.keys(cand).length === 0;
- if (end) {
- // polyfill since RTCIceGatherer.state is not implemented in
- // Edge 10547 yet.
- if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {
- iceGatherer.state = 'completed';
- }
- } else {
- if (iceGatherer.state === 'new') {
- iceGatherer.state = 'gathering';
- }
- // RTCIceCandidate doesn't have a component, needs to be added
- cand.component = 1;
- // also the usernameFragment. TODO: update SDP to take both variants.
- cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;
-
- var serializedCandidate = SDPUtils.writeCandidate(cand);
- event.candidate = Object.assign(event.candidate,
- SDPUtils.parseCandidate(serializedCandidate));
-
- event.candidate.candidate = serializedCandidate;
- event.candidate.toJSON = function() {
- return {
- candidate: event.candidate.candidate,
- sdpMid: event.candidate.sdpMid,
- sdpMLineIndex: event.candidate.sdpMLineIndex,
- usernameFragment: event.candidate.usernameFragment
- };
- };
- }
+ config = JSON.parse(JSON.stringify(config || {}));
- // update local description.
- var sections = SDPUtils.getMediaSections(pc.localDescription.sdp);
- if (!end) {
- sections[event.candidate.sdpMLineIndex] +=
- 'a=' + event.candidate.candidate + '\r\n';
- } else {
- sections[event.candidate.sdpMLineIndex] +=
- 'a=end-of-candidates\r\n';
- }
- pc.localDescription.sdp =
- SDPUtils.getDescription(pc.localDescription.sdp) +
- sections.join('');
- var complete = pc.transceivers.every(function(transceiver) {
- return transceiver.iceGatherer &&
- transceiver.iceGatherer.state === 'completed';
- });
+ this.usingBundle = config.bundlePolicy === 'max-bundle';
+ if (config.rtcpMuxPolicy === 'negotiate') {
+ throw(makeError('NotSupportedError',
+ 'rtcpMuxPolicy \'negotiate\' is not supported'));
+ } else if (!config.rtcpMuxPolicy) {
+ config.rtcpMuxPolicy = 'require';
+ }
- if (pc.iceGatheringState !== 'gathering') {
- pc.iceGatheringState = 'gathering';
- pc._emitGatheringStateChange();
- }
+ switch (config.iceTransportPolicy) {
+ case 'all':
+ case 'relay':
+ break;
+ default:
+ config.iceTransportPolicy = 'all';
+ break;
+ }
- // Emit candidate. Also emit null candidate when all gatherers are
- // complete.
- if (!end) {
- pc._dispatchEvent('icecandidate', event);
- }
- if (complete) {
- pc._dispatchEvent('icecandidate', new Event('icecandidate'));
- pc.iceGatheringState = 'complete';
- pc._emitGatheringStateChange();
- }
- };
+ switch (config.bundlePolicy) {
+ case 'balanced':
+ case 'max-compat':
+ case 'max-bundle':
+ break;
+ default:
+ config.bundlePolicy = 'balanced';
+ break;
+ }
- // emit already gathered candidates.
- window.setTimeout(function() {
- bufferedCandidateEvents.forEach(function(e) {
- iceGatherer.onlocalcandidate(e);
- });
- }, 0);
- };
-
- // Create ICE transport and DTLS transport.
- RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {
- var pc = this;
- var iceTransport = new window.RTCIceTransport(null);
- iceTransport.onicestatechange = function() {
- pc._updateIceConnectionState();
- pc._updateConnectionState();
- };
+ config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);
- var dtlsTransport = new window.RTCDtlsTransport(iceTransport);
- dtlsTransport.ondtlsstatechange = function() {
- pc._updateConnectionState();
- };
- dtlsTransport.onerror = function() {
- // onerror does not set state to failed by itself.
- Object.defineProperty(dtlsTransport, 'state',
- {value: 'failed', writable: true});
- pc._updateConnectionState();
- };
+ this._iceGatherers = [];
+ if (config.iceCandidatePoolSize) {
+ for (var i = config.iceCandidatePoolSize; i > 0; i--) {
+ this._iceGatherers.push(new window.RTCIceGatherer({
+ iceServers: config.iceServers,
+ gatherPolicy: config.iceTransportPolicy
+ }));
+ }
+ } else {
+ config.iceCandidatePoolSize = 0;
+ }
- return {
- iceTransport: iceTransport,
- dtlsTransport: dtlsTransport
- };
- };
-
- // Destroy ICE gatherer, ICE transport and DTLS transport.
- // Without triggering the callbacks.
- RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(
- sdpMLineIndex) {
- var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
- if (iceGatherer) {
- delete iceGatherer.onlocalcandidate;
- delete this.transceivers[sdpMLineIndex].iceGatherer;
- }
- var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;
- if (iceTransport) {
- delete iceTransport.onicestatechange;
- delete this.transceivers[sdpMLineIndex].iceTransport;
- }
- var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;
- if (dtlsTransport) {
- delete dtlsTransport.ondtlsstatechange;
- delete dtlsTransport.onerror;
- delete this.transceivers[sdpMLineIndex].dtlsTransport;
- }
- };
-
- // Start the RTP Sender and Receiver for a transceiver.
- RTCPeerConnection.prototype._transceive = function(transceiver,
- send, recv) {
- var params = getCommonCapabilities(transceiver.localCapabilities,
- transceiver.remoteCapabilities);
- if (send && transceiver.rtpSender) {
- params.encodings = transceiver.sendEncodingParameters;
- params.rtcp = {
- cname: SDPUtils.localCName,
- compound: transceiver.rtcpParameters.compound
- };
- if (transceiver.recvEncodingParameters.length) {
- params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;
- }
- transceiver.rtpSender.send(params);
- }
- if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {
- // remove RTX field in Edge 14942
- if (transceiver.kind === 'video'
- && transceiver.recvEncodingParameters
- && edgeVersion < 15019) {
- transceiver.recvEncodingParameters.forEach(function(p) {
- delete p.rtx;
- });
- }
- if (transceiver.recvEncodingParameters.length) {
- params.encodings = transceiver.recvEncodingParameters;
- } else {
- params.encodings = [{}];
- }
- params.rtcp = {
- compound: transceiver.rtcpParameters.compound
- };
- if (transceiver.rtcpParameters.cname) {
- params.rtcp.cname = transceiver.rtcpParameters.cname;
- }
- if (transceiver.sendEncodingParameters.length) {
- params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;
- }
- transceiver.rtpReceiver.receive(params);
- }
- };
+ this._config = config;
- RTCPeerConnection.prototype.setLocalDescription = function(description) {
- var pc = this;
+ // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
+ // everything that is needed to describe a SDP m-line.
+ this.transceivers = [];
- // Note: pranswer is not supported.
- if (['offer', 'answer'].indexOf(description.type) === -1) {
- return Promise.reject(makeError('TypeError',
- 'Unsupported type "' + description.type + '"'));
- }
+ this._sdpSessionId = SDPUtils.generateSessionId();
+ this._sdpSessionVersion = 0;
- if (!isActionAllowedInSignalingState('setLocalDescription',
- description.type, pc.signalingState) || pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError',
- 'Can not set local ' + description.type +
- ' in state ' + pc.signalingState));
- }
+ this._dtlsRole = undefined; // role for a=setup to use in answers.
- var sections;
- var sessionpart;
- if (description.type === 'offer') {
- // VERY limited support for SDP munging. Limited to:
- // * changing the order of codecs
- sections = SDPUtils.splitSections(description.sdp);
- sessionpart = sections.shift();
- sections.forEach(function(mediaSection, sdpMLineIndex) {
- var caps = SDPUtils.parseRtpParameters(mediaSection);
- pc.transceivers[sdpMLineIndex].localCapabilities = caps;
- });
+ this._isClosed = false;
+ };
- pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
- pc._gather(transceiver.mid, sdpMLineIndex);
+ Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {
+ configurable: true,
+ get: function() {
+ return this._localDescription;
+ }
});
- } else if (description.type === 'answer') {
- sections = SDPUtils.splitSections(pc.remoteDescription.sdp);
- sessionpart = sections.shift();
- var isIceLite = SDPUtils.matchPrefix(sessionpart,
- 'a=ice-lite').length > 0;
- sections.forEach(function(mediaSection, sdpMLineIndex) {
- var transceiver = pc.transceivers[sdpMLineIndex];
- var iceGatherer = transceiver.iceGatherer;
- var iceTransport = transceiver.iceTransport;
- var dtlsTransport = transceiver.dtlsTransport;
- var localCapabilities = transceiver.localCapabilities;
- var remoteCapabilities = transceiver.remoteCapabilities;
-
- // treat bundle-only as not-rejected.
- var rejected = SDPUtils.isRejected(mediaSection) &&
- SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
-
- if (!rejected && !transceiver.rejected) {
- var remoteIceParameters = SDPUtils.getIceParameters(
- mediaSection, sessionpart);
- var remoteDtlsParameters = SDPUtils.getDtlsParameters(
- mediaSection, sessionpart);
- if (isIceLite) {
- remoteDtlsParameters.role = 'server';
- }
-
- if (!pc.usingBundle || sdpMLineIndex === 0) {
- pc._gather(transceiver.mid, sdpMLineIndex);
- if (iceTransport.state === 'new') {
- iceTransport.start(iceGatherer, remoteIceParameters,
- isIceLite ? 'controlling' : 'controlled');
- }
- if (dtlsTransport.state === 'new') {
- dtlsTransport.start(remoteDtlsParameters);
- }
- }
-
- // Calculate intersection of capabilities.
- var params = getCommonCapabilities(localCapabilities,
- remoteCapabilities);
-
- // Start the RTCRtpSender. The RTCRtpReceiver for this
- // transceiver has already been started in setRemoteDescription.
- pc._transceive(transceiver,
- params.codecs.length > 0,
- false);
+ Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {
+ configurable: true,
+ get: function() {
+ return this._remoteDescription;
}
});
- }
-
- pc.localDescription = {
- type: description.type,
- sdp: description.sdp
- };
- if (description.type === 'offer') {
- pc._updateSignalingState('have-local-offer');
- } else {
- pc._updateSignalingState('stable');
- }
- return Promise.resolve();
- };
+ // set up event handlers on prototype
+ RTCPeerConnection.prototype.onicecandidate = null;
+ RTCPeerConnection.prototype.onaddstream = null;
+ RTCPeerConnection.prototype.ontrack = null;
+ RTCPeerConnection.prototype.onremovestream = null;
+ RTCPeerConnection.prototype.onsignalingstatechange = null;
+ RTCPeerConnection.prototype.oniceconnectionstatechange = null;
+ RTCPeerConnection.prototype.onconnectionstatechange = null;
+ RTCPeerConnection.prototype.onicegatheringstatechange = null;
+ RTCPeerConnection.prototype.onnegotiationneeded = null;
+ RTCPeerConnection.prototype.ondatachannel = null;
+
+ RTCPeerConnection.prototype._dispatchEvent = function(name, event) {
+ if (this._isClosed) {
+ return;
+ }
+ this.dispatchEvent(event);
+ if (typeof this['on' + name] === 'function') {
+ this['on' + name](event);
+ }
+ };
- RTCPeerConnection.prototype.setRemoteDescription = function(description) {
- var pc = this;
+ RTCPeerConnection.prototype._emitGatheringStateChange = function() {
+ var event = new Event('icegatheringstatechange');
+ this._dispatchEvent('icegatheringstatechange', event);
+ };
- // Note: pranswer is not supported.
- if (['offer', 'answer'].indexOf(description.type) === -1) {
- return Promise.reject(makeError('TypeError',
- 'Unsupported type "' + description.type + '"'));
- }
+ RTCPeerConnection.prototype.getConfiguration = function() {
+ return this._config;
+ };
- if (!isActionAllowedInSignalingState('setRemoteDescription',
- description.type, pc.signalingState) || pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError',
- 'Can not set remote ' + description.type +
- ' in state ' + pc.signalingState));
- }
+ RTCPeerConnection.prototype.getLocalStreams = function() {
+ return this.localStreams;
+ };
- var streams = {};
- pc.remoteStreams.forEach(function(stream) {
- streams[stream.id] = stream;
- });
- var receiverList = [];
- var sections = SDPUtils.splitSections(description.sdp);
- var sessionpart = sections.shift();
- var isIceLite = SDPUtils.matchPrefix(sessionpart,
- 'a=ice-lite').length > 0;
- var usingBundle = SDPUtils.matchPrefix(sessionpart,
- 'a=group:BUNDLE ').length > 0;
- pc.usingBundle = usingBundle;
- var iceOptions = SDPUtils.matchPrefix(sessionpart,
- 'a=ice-options:')[0];
- if (iceOptions) {
- pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')
- .indexOf('trickle') >= 0;
- } else {
- pc.canTrickleIceCandidates = false;
- }
+ RTCPeerConnection.prototype.getRemoteStreams = function() {
+ return this.remoteStreams;
+ };
- sections.forEach(function(mediaSection, sdpMLineIndex) {
- var lines = SDPUtils.splitLines(mediaSection);
- var kind = SDPUtils.getKind(mediaSection);
- // treat bundle-only as not-rejected.
- var rejected = SDPUtils.isRejected(mediaSection) &&
- SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
- var protocol = lines[0].substr(2).split(' ')[2];
-
- var direction = SDPUtils.getDirection(mediaSection, sessionpart);
- var remoteMsid = SDPUtils.parseMsid(mediaSection);
-
- var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();
-
- // Reject datachannels which are not implemented yet.
- if ((kind === 'application' && protocol === 'DTLS/SCTP') || rejected) {
- // TODO: this is dangerous in the case where a non-rejected m-line
- // becomes rejected.
- pc.transceivers[sdpMLineIndex] = {
- mid: mid,
+ // internal helper to create a transceiver object.
+ // (which is not yet the same as the WebRTC 1.0 transceiver)
+ RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {
+ var hasBundleTransport = this.transceivers.length > 0;
+ var transceiver = {
+ track: null,
+ iceGatherer: null,
+ iceTransport: null,
+ dtlsTransport: null,
+ localCapabilities: null,
+ remoteCapabilities: null,
+ rtpSender: null,
+ rtpReceiver: null,
kind: kind,
- rejected: true
+ mid: null,
+ sendEncodingParameters: null,
+ recvEncodingParameters: null,
+ stream: null,
+ associatedRemoteMediaStreams: [],
+ wantReceive: true
};
- return;
- }
-
- if (!rejected && pc.transceivers[sdpMLineIndex] &&
- pc.transceivers[sdpMLineIndex].rejected) {
- // recycle a rejected transceiver.
- pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);
- }
-
- var transceiver;
- var iceGatherer;
- var iceTransport;
- var dtlsTransport;
- var rtpReceiver;
- var sendEncodingParameters;
- var recvEncodingParameters;
- var localCapabilities;
-
- var track;
- // FIXME: ensure the mediaSection has rtcp-mux set.
- var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);
- var remoteIceParameters;
- var remoteDtlsParameters;
- if (!rejected) {
- remoteIceParameters = SDPUtils.getIceParameters(mediaSection,
- sessionpart);
- remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,
- sessionpart);
- remoteDtlsParameters.role = 'client';
- }
- recvEncodingParameters =
- SDPUtils.parseRtpEncodingParameters(mediaSection);
+ if (this.usingBundle && hasBundleTransport) {
+ transceiver.iceTransport = this.transceivers[0].iceTransport;
+ transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;
+ } else {
+ var transports = this._createIceAndDtlsTransports();
+ transceiver.iceTransport = transports.iceTransport;
+ transceiver.dtlsTransport = transports.dtlsTransport;
+ }
+ if (!doNotAdd) {
+ this.transceivers.push(transceiver);
+ }
+ return transceiver;
+ };
- var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);
+ RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ if (this._isClosed) {
+ throw makeError('InvalidStateError',
+ 'Attempted to call addTrack on a closed peerconnection.');
+ }
- var isComplete = SDPUtils.matchPrefix(mediaSection,
- 'a=end-of-candidates', sessionpart).length > 0;
- var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')
- .map(function(cand) {
- return SDPUtils.parseCandidate(cand);
- })
- .filter(function(cand) {
- return cand.component === 1;
+ var alreadyExists = this.transceivers.find(function(s) {
+ return s.track === track;
});
- // Check if we can use BUNDLE and dispose transports.
- if ((description.type === 'offer' || description.type === 'answer') &&
- !rejected && usingBundle && sdpMLineIndex > 0 &&
- pc.transceivers[sdpMLineIndex]) {
- pc._disposeIceAndDtlsTransports(sdpMLineIndex);
- pc.transceivers[sdpMLineIndex].iceGatherer =
- pc.transceivers[0].iceGatherer;
- pc.transceivers[sdpMLineIndex].iceTransport =
- pc.transceivers[0].iceTransport;
- pc.transceivers[sdpMLineIndex].dtlsTransport =
- pc.transceivers[0].dtlsTransport;
- if (pc.transceivers[sdpMLineIndex].rtpSender) {
- pc.transceivers[sdpMLineIndex].rtpSender.setTransport(
- pc.transceivers[0].dtlsTransport);
- }
- if (pc.transceivers[sdpMLineIndex].rtpReceiver) {
- pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(
- pc.transceivers[0].dtlsTransport);
- }
- }
- if (description.type === 'offer' && !rejected) {
- transceiver = pc.transceivers[sdpMLineIndex] ||
- pc._createTransceiver(kind);
- transceiver.mid = mid;
-
- if (!transceiver.iceGatherer) {
- transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
- usingBundle);
+ if (alreadyExists) {
+ throw makeError('InvalidAccessError', 'Track already exists.');
}
- if (cands.length && transceiver.iceTransport.state === 'new') {
- if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {
- transceiver.iceTransport.setRemoteCandidates(cands);
- } else {
- cands.forEach(function(candidate) {
- maybeAddCandidate(transceiver.iceTransport, candidate);
- });
+ var transceiver;
+ for (var i = 0; i < this.transceivers.length; i++) {
+ if (!this.transceivers[i].track &&
+ this.transceivers[i].kind === track.kind) {
+ transceiver = this.transceivers[i];
}
}
+ if (!transceiver) {
+ transceiver = this._createTransceiver(track.kind);
+ }
- localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);
+ this._maybeFireNegotiationNeeded();
- // filter RTX until additional stuff needed for RTX is implemented
- // in adapter.js
- if (edgeVersion < 15019) {
- localCapabilities.codecs = localCapabilities.codecs.filter(
- function(codec) {
- return codec.name !== 'rtx';
- });
+ if (this.localStreams.indexOf(stream) === -1) {
+ this.localStreams.push(stream);
}
- sendEncodingParameters = transceiver.sendEncodingParameters || [{
- ssrc: (2 * sdpMLineIndex + 2) * 1001
- }];
-
- // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
- var isNewTrack = false;
- if (direction === 'sendrecv' || direction === 'sendonly') {
- isNewTrack = !transceiver.rtpReceiver;
- rtpReceiver = transceiver.rtpReceiver ||
- new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
-
- if (isNewTrack) {
- var stream;
- track = rtpReceiver.track;
- // FIXME: does not work with Plan B.
- if (remoteMsid && remoteMsid.stream === '-') {
- // no-op. a stream id of '-' means: no associated stream.
- } else if (remoteMsid) {
- if (!streams[remoteMsid.stream]) {
- streams[remoteMsid.stream] = new window.MediaStream();
- Object.defineProperty(streams[remoteMsid.stream], 'id', {
- get: function() {
- return remoteMsid.stream;
- }
- });
- }
- Object.defineProperty(track, 'id', {
- get: function() {
- return remoteMsid.track;
- }
- });
- stream = streams[remoteMsid.stream];
- } else {
- if (!streams.default) {
- streams.default = new window.MediaStream();
- }
- stream = streams.default;
- }
- if (stream) {
- addTrackToStreamAndFireEvent(track, stream);
- transceiver.associatedRemoteMediaStreams.push(stream);
- }
- receiverList.push([track, rtpReceiver, stream]);
- }
- } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {
- transceiver.associatedRemoteMediaStreams.forEach(function(s) {
- var nativeTrack = s.getTracks().find(function(t) {
- return t.id === transceiver.rtpReceiver.track.id;
- });
- if (nativeTrack) {
- removeTrackFromStreamAndFireEvent(nativeTrack, s);
- }
+ transceiver.track = track;
+ transceiver.stream = stream;
+ transceiver.rtpSender = new window.RTCRtpSender(track,
+ transceiver.dtlsTransport);
+ return transceiver.rtpSender;
+ };
+
+ RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ if (edgeVersion >= 15025) {
+ stream.getTracks().forEach(function(track) {
+ pc.addTrack(track, stream);
});
- transceiver.associatedRemoteMediaStreams = [];
- }
-
- transceiver.localCapabilities = localCapabilities;
- transceiver.remoteCapabilities = remoteCapabilities;
- transceiver.rtpReceiver = rtpReceiver;
- transceiver.rtcpParameters = rtcpParameters;
- transceiver.sendEncodingParameters = sendEncodingParameters;
- transceiver.recvEncodingParameters = recvEncodingParameters;
-
- // Start the RTCRtpReceiver now. The RTPSender is started in
- // setLocalDescription.
- pc._transceive(pc.transceivers[sdpMLineIndex],
- false,
- isNewTrack);
- } else if (description.type === 'answer' && !rejected) {
- transceiver = pc.transceivers[sdpMLineIndex];
- iceGatherer = transceiver.iceGatherer;
- iceTransport = transceiver.iceTransport;
- dtlsTransport = transceiver.dtlsTransport;
- rtpReceiver = transceiver.rtpReceiver;
- sendEncodingParameters = transceiver.sendEncodingParameters;
- localCapabilities = transceiver.localCapabilities;
-
- pc.transceivers[sdpMLineIndex].recvEncodingParameters =
- recvEncodingParameters;
- pc.transceivers[sdpMLineIndex].remoteCapabilities =
- remoteCapabilities;
- pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;
-
- if (cands.length && iceTransport.state === 'new') {
- if ((isIceLite || isComplete) &&
- (!usingBundle || sdpMLineIndex === 0)) {
- iceTransport.setRemoteCandidates(cands);
- } else {
- cands.forEach(function(candidate) {
- maybeAddCandidate(transceiver.iceTransport, candidate);
+ } else {
+ // Clone is necessary for local demos mostly, attaching directly
+ // to two different senders does not work (build 10547).
+ // Fixed in 15025 (or earlier)
+ var clonedStream = stream.clone();
+ stream.getTracks().forEach(function(track, idx) {
+ var clonedTrack = clonedStream.getTracks()[idx];
+ track.addEventListener('enabled', function(event) {
+ clonedTrack.enabled = event.enabled;
});
- }
+ });
+ clonedStream.getTracks().forEach(function(track) {
+ pc.addTrack(track, clonedStream);
+ });
}
+ };
- if (!usingBundle || sdpMLineIndex === 0) {
- if (iceTransport.state === 'new') {
- iceTransport.start(iceGatherer, remoteIceParameters,
- 'controlling');
- }
- if (dtlsTransport.state === 'new') {
- dtlsTransport.start(remoteDtlsParameters);
- }
+ RTCPeerConnection.prototype.removeTrack = function(sender) {
+ if (this._isClosed) {
+ throw makeError('InvalidStateError',
+ 'Attempted to call removeTrack on a closed peerconnection.');
}
- pc._transceive(transceiver,
- direction === 'sendrecv' || direction === 'recvonly',
- direction === 'sendrecv' || direction === 'sendonly');
+ if (!(sender instanceof window.RTCRtpSender)) {
+ throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +
+ 'does not implement interface RTCRtpSender.');
+ }
- // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
- if (rtpReceiver &&
- (direction === 'sendrecv' || direction === 'sendonly')) {
- track = rtpReceiver.track;
- if (remoteMsid) {
- if (!streams[remoteMsid.stream]) {
- streams[remoteMsid.stream] = new window.MediaStream();
- }
- addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);
- receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);
- } else {
- if (!streams.default) {
- streams.default = new window.MediaStream();
- }
- addTrackToStreamAndFireEvent(track, streams.default);
- receiverList.push([track, rtpReceiver, streams.default]);
- }
- } else {
- // FIXME: actually the receiver should be created later.
- delete transceiver.rtpReceiver;
+ var transceiver = this.transceivers.find(function(t) {
+ return t.rtpSender === sender;
+ });
+
+ if (!transceiver) {
+ throw makeError('InvalidAccessError',
+ 'Sender was not created by this connection.');
}
- }
- });
+ var stream = transceiver.stream;
- if (pc._dtlsRole === undefined) {
- pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';
- }
+ transceiver.rtpSender.stop();
+ transceiver.rtpSender = null;
+ transceiver.track = null;
+ transceiver.stream = null;
- pc.remoteDescription = {
- type: description.type,
- sdp: description.sdp
- };
- if (description.type === 'offer') {
- pc._updateSignalingState('have-remote-offer');
- } else {
- pc._updateSignalingState('stable');
- }
- Object.keys(streams).forEach(function(sid) {
- var stream = streams[sid];
- if (stream.getTracks().length) {
- if (pc.remoteStreams.indexOf(stream) === -1) {
- pc.remoteStreams.push(stream);
- var event = new Event('addstream');
- event.stream = stream;
- window.setTimeout(function() {
- pc._dispatchEvent('addstream', event);
- });
+ // remove the stream from the set of local streams
+ var localStreams = this.transceivers.map(function(t) {
+ return t.stream;
+ });
+ if (localStreams.indexOf(stream) === -1 &&
+ this.localStreams.indexOf(stream) > -1) {
+ this.localStreams.splice(this.localStreams.indexOf(stream), 1);
}
- receiverList.forEach(function(item) {
- var track = item[0];
- var receiver = item[1];
- if (stream.id !== item[2].id) {
- return;
+ this._maybeFireNegotiationNeeded();
+ };
+
+ RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ stream.getTracks().forEach(function(track) {
+ var sender = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (sender) {
+ pc.removeTrack(sender);
}
- fireAddTrack(pc, track, receiver, [stream]);
});
- }
- });
- receiverList.forEach(function(item) {
- if (item[2]) {
- return;
- }
- fireAddTrack(pc, item[0], item[1], []);
- });
+ };
- // check whether addIceCandidate({}) was called within four seconds after
- // setRemoteDescription.
- window.setTimeout(function() {
- if (!(pc && pc.transceivers)) {
- return;
- }
- pc.transceivers.forEach(function(transceiver) {
- if (transceiver.iceTransport &&
- transceiver.iceTransport.state === 'new' &&
- transceiver.iceTransport.getRemoteCandidates().length > 0) {
- console.warn('Timeout for addRemoteCandidate. Consider sending ' +
- 'an end-of-candidates notification');
- transceiver.iceTransport.addRemoteCandidate({});
- }
- });
- }, 4000);
-
- return Promise.resolve();
- };
-
- RTCPeerConnection.prototype.close = function() {
- this.transceivers.forEach(function(transceiver) {
- /* not yet
-if (transceiver.iceGatherer) {
-transceiver.iceGatherer.close();
-}
-*/
- if (transceiver.iceTransport) {
- transceiver.iceTransport.stop();
- }
- if (transceiver.dtlsTransport) {
- transceiver.dtlsTransport.stop();
- }
- if (transceiver.rtpSender) {
- transceiver.rtpSender.stop();
- }
- if (transceiver.rtpReceiver) {
- transceiver.rtpReceiver.stop();
- }
- });
- // FIXME: clean up tracks, local streams, remote streams, etc
- this._isClosed = true;
- this._updateSignalingState('closed');
- };
-
- // Update the signaling state.
- RTCPeerConnection.prototype._updateSignalingState = function(newState) {
- this.signalingState = newState;
- var event = new Event('signalingstatechange');
- this._dispatchEvent('signalingstatechange', event);
- };
-
- // Determine whether to fire the negotiationneeded event.
- RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {
- var pc = this;
- if (this.signalingState !== 'stable' || this.needNegotiation === true) {
- return;
- }
- this.needNegotiation = true;
- window.setTimeout(function() {
- if (pc.needNegotiation) {
- pc.needNegotiation = false;
- var event = new Event('negotiationneeded');
- pc._dispatchEvent('negotiationneeded', event);
- }
- }, 0);
- };
-
- // Update the ice connection state.
- RTCPeerConnection.prototype._updateIceConnectionState = function() {
- var newState;
- var states = {
- 'new': 0,
- closed: 0,
- checking: 0,
- connected: 0,
- completed: 0,
- disconnected: 0,
- failed: 0
- };
- this.transceivers.forEach(function(transceiver) {
- states[transceiver.iceTransport.state]++;
- });
-
- newState = 'new';
- if (states.failed > 0) {
- newState = 'failed';
- } else if (states.checking > 0) {
- newState = 'checking';
- } else if (states.disconnected > 0) {
- newState = 'disconnected';
- } else if (states.new > 0) {
- newState = 'new';
- } else if (states.connected > 0) {
- newState = 'connected';
- } else if (states.completed > 0) {
- newState = 'completed';
- }
+ RTCPeerConnection.prototype.getSenders = function() {
+ return this.transceivers.filter(function(transceiver) {
+ return !!transceiver.rtpSender;
+ })
+ .map(function(transceiver) {
+ return transceiver.rtpSender;
+ });
+ };
- if (newState !== this.iceConnectionState) {
- this.iceConnectionState = newState;
- var event = new Event('iceconnectionstatechange');
- this._dispatchEvent('iceconnectionstatechange', event);
- }
- };
-
- // Update the connection state.
- RTCPeerConnection.prototype._updateConnectionState = function() {
- var newState;
- var states = {
- 'new': 0,
- closed: 0,
- connecting: 0,
- connected: 0,
- completed: 0,
- disconnected: 0,
- failed: 0
- };
- this.transceivers.forEach(function(transceiver) {
- states[transceiver.iceTransport.state]++;
- states[transceiver.dtlsTransport.state]++;
- });
- // ICETransport.completed and connected are the same for this purpose.
- states.connected += states.completed;
-
- newState = 'new';
- if (states.failed > 0) {
- newState = 'failed';
- } else if (states.connecting > 0) {
- newState = 'connecting';
- } else if (states.disconnected > 0) {
- newState = 'disconnected';
- } else if (states.new > 0) {
- newState = 'new';
- } else if (states.connected > 0) {
- newState = 'connected';
- }
+ RTCPeerConnection.prototype.getReceivers = function() {
+ return this.transceivers.filter(function(transceiver) {
+ return !!transceiver.rtpReceiver;
+ })
+ .map(function(transceiver) {
+ return transceiver.rtpReceiver;
+ });
+ };
- if (newState !== this.connectionState) {
- this.connectionState = newState;
- var event = new Event('connectionstatechange');
- this._dispatchEvent('connectionstatechange', event);
- }
- };
- RTCPeerConnection.prototype.createOffer = function() {
- var pc = this;
+ RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,
+ usingBundle) {
+ var pc = this;
+ if (usingBundle && sdpMLineIndex > 0) {
+ return this.transceivers[0].iceGatherer;
+ } else if (this._iceGatherers.length) {
+ return this._iceGatherers.shift();
+ }
+ var iceGatherer = new window.RTCIceGatherer({
+ iceServers: this._config.iceServers,
+ gatherPolicy: this._config.iceTransportPolicy
+ });
+ Object.defineProperty(iceGatherer, 'state',
+ {value: 'new', writable: true}
+ );
+
+ this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];
+ this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {
+ var end = !event.candidate || Object.keys(event.candidate).length === 0;
+ // polyfill since RTCIceGatherer.state is not implemented in
+ // Edge 10547 yet.
+ iceGatherer.state = end ? 'completed' : 'gathering';
+ if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {
+ pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);
+ }
+ };
+ iceGatherer.addEventListener('localcandidate',
+ this.transceivers[sdpMLineIndex].bufferCandidates);
+ return iceGatherer;
+ };
- if (pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError',
- 'Can not call createOffer after close'));
- }
+ // start gathering from an RTCIceGatherer.
+ RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {
+ var pc = this;
+ var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
+ if (iceGatherer.onlocalcandidate) {
+ return;
+ }
+ var bufferedCandidateEvents =
+ this.transceivers[sdpMLineIndex].bufferedCandidateEvents;
+ this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;
+ iceGatherer.removeEventListener('localcandidate',
+ this.transceivers[sdpMLineIndex].bufferCandidates);
+ iceGatherer.onlocalcandidate = function(evt) {
+ if (pc.usingBundle && sdpMLineIndex > 0) {
+ // if we know that we use bundle we can drop candidates with
+ // ѕdpMLineIndex > 0. If we don't do this then our state gets
+ // confused since we dispose the extra ice gatherer.
+ return;
+ }
+ var event = new Event('icecandidate');
+ event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};
+
+ var cand = evt.candidate;
+ // Edge emits an empty object for RTCIceCandidateComplete‥
+ var end = !cand || Object.keys(cand).length === 0;
+ if (end) {
+ // polyfill since RTCIceGatherer.state is not implemented in
+ // Edge 10547 yet.
+ if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {
+ iceGatherer.state = 'completed';
+ }
+ } else {
+ if (iceGatherer.state === 'new') {
+ iceGatherer.state = 'gathering';
+ }
+ // RTCIceCandidate doesn't have a component, needs to be added
+ cand.component = 1;
+ // also the usernameFragment. TODO: update SDP to take both variants.
+ cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;
+
+ var serializedCandidate = SDPUtils.writeCandidate(cand);
+ event.candidate = Object.assign(event.candidate,
+ SDPUtils.parseCandidate(serializedCandidate));
+
+ event.candidate.candidate = serializedCandidate;
+ event.candidate.toJSON = function() {
+ return {
+ candidate: event.candidate.candidate,
+ sdpMid: event.candidate.sdpMid,
+ sdpMLineIndex: event.candidate.sdpMLineIndex,
+ usernameFragment: event.candidate.usernameFragment
+ };
+ };
+ }
- var numAudioTracks = pc.transceivers.filter(function(t) {
- return t.kind === 'audio';
- }).length;
- var numVideoTracks = pc.transceivers.filter(function(t) {
- return t.kind === 'video';
- }).length;
-
- // Determine number of audio and video tracks we need to send/recv.
- var offerOptions = arguments[0];
- if (offerOptions) {
- // Reject Chrome legacy constraints.
- if (offerOptions.mandatory || offerOptions.optional) {
- throw new TypeError(
- 'Legacy mandatory/optional constraints not supported.');
- }
- if (offerOptions.offerToReceiveAudio !== undefined) {
- if (offerOptions.offerToReceiveAudio === true) {
- numAudioTracks = 1;
- } else if (offerOptions.offerToReceiveAudio === false) {
- numAudioTracks = 0;
- } else {
- numAudioTracks = offerOptions.offerToReceiveAudio;
+ // update local description.
+ var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);
+ if (!end) {
+ sections[event.candidate.sdpMLineIndex] +=
+ 'a=' + event.candidate.candidate + '\r\n';
+ } else {
+ sections[event.candidate.sdpMLineIndex] +=
+ 'a=end-of-candidates\r\n';
+ }
+ pc._localDescription.sdp =
+ SDPUtils.getDescription(pc._localDescription.sdp) +
+ sections.join('');
+ var complete = pc.transceivers.every(function(transceiver) {
+ return transceiver.iceGatherer &&
+ transceiver.iceGatherer.state === 'completed';
+ });
+
+ if (pc.iceGatheringState !== 'gathering') {
+ pc.iceGatheringState = 'gathering';
+ pc._emitGatheringStateChange();
+ }
+
+ // Emit candidate. Also emit null candidate when all gatherers are
+ // complete.
+ if (!end) {
+ pc._dispatchEvent('icecandidate', event);
+ }
+ if (complete) {
+ pc._dispatchEvent('icecandidate', new Event('icecandidate'));
+ pc.iceGatheringState = 'complete';
+ pc._emitGatheringStateChange();
+ }
+ };
+
+ // emit already gathered candidates.
+ window.setTimeout(function() {
+ bufferedCandidateEvents.forEach(function(e) {
+ iceGatherer.onlocalcandidate(e);
+ });
+ }, 0);
+ };
+
+ // Create ICE transport and DTLS transport.
+ RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {
+ var pc = this;
+ var iceTransport = new window.RTCIceTransport(null);
+ iceTransport.onicestatechange = function() {
+ pc._updateIceConnectionState();
+ pc._updateConnectionState();
+ };
+
+ var dtlsTransport = new window.RTCDtlsTransport(iceTransport);
+ dtlsTransport.ondtlsstatechange = function() {
+ pc._updateConnectionState();
+ };
+ dtlsTransport.onerror = function() {
+ // onerror does not set state to failed by itself.
+ Object.defineProperty(dtlsTransport, 'state',
+ {value: 'failed', writable: true});
+ pc._updateConnectionState();
+ };
+
+ return {
+ iceTransport: iceTransport,
+ dtlsTransport: dtlsTransport
+ };
+ };
+
+ // Destroy ICE gatherer, ICE transport and DTLS transport.
+ // Without triggering the callbacks.
+ RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(
+ sdpMLineIndex) {
+ var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
+ if (iceGatherer) {
+ delete iceGatherer.onlocalcandidate;
+ delete this.transceivers[sdpMLineIndex].iceGatherer;
}
- }
- if (offerOptions.offerToReceiveVideo !== undefined) {
- if (offerOptions.offerToReceiveVideo === true) {
- numVideoTracks = 1;
- } else if (offerOptions.offerToReceiveVideo === false) {
- numVideoTracks = 0;
- } else {
- numVideoTracks = offerOptions.offerToReceiveVideo;
+ var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;
+ if (iceTransport) {
+ delete iceTransport.onicestatechange;
+ delete this.transceivers[sdpMLineIndex].iceTransport;
}
- }
- }
+ var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;
+ if (dtlsTransport) {
+ delete dtlsTransport.ondtlsstatechange;
+ delete dtlsTransport.onerror;
+ delete this.transceivers[sdpMLineIndex].dtlsTransport;
+ }
+ };
- pc.transceivers.forEach(function(transceiver) {
- if (transceiver.kind === 'audio') {
- numAudioTracks--;
- if (numAudioTracks < 0) {
- transceiver.wantReceive = false;
+ // Start the RTP Sender and Receiver for a transceiver.
+ RTCPeerConnection.prototype._transceive = function(transceiver,
+ send, recv) {
+ var params = getCommonCapabilities(transceiver.localCapabilities,
+ transceiver.remoteCapabilities);
+ if (send && transceiver.rtpSender) {
+ params.encodings = transceiver.sendEncodingParameters;
+ params.rtcp = {
+ cname: SDPUtils.localCName,
+ compound: transceiver.rtcpParameters.compound
+ };
+ if (transceiver.recvEncodingParameters.length) {
+ params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;
+ }
+ transceiver.rtpSender.send(params);
}
- } else if (transceiver.kind === 'video') {
- numVideoTracks--;
- if (numVideoTracks < 0) {
- transceiver.wantReceive = false;
+ if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {
+ // remove RTX field in Edge 14942
+ if (transceiver.kind === 'video'
+ && transceiver.recvEncodingParameters
+ && edgeVersion < 15019) {
+ transceiver.recvEncodingParameters.forEach(function(p) {
+ delete p.rtx;
+ });
+ }
+ if (transceiver.recvEncodingParameters.length) {
+ params.encodings = transceiver.recvEncodingParameters;
+ } else {
+ params.encodings = [{}];
+ }
+ params.rtcp = {
+ compound: transceiver.rtcpParameters.compound
+ };
+ if (transceiver.rtcpParameters.cname) {
+ params.rtcp.cname = transceiver.rtcpParameters.cname;
+ }
+ if (transceiver.sendEncodingParameters.length) {
+ params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;
+ }
+ transceiver.rtpReceiver.receive(params);
}
- }
- });
+ };
- // Create M-lines for recvonly streams.
- while (numAudioTracks > 0 || numVideoTracks > 0) {
- if (numAudioTracks > 0) {
- pc._createTransceiver('audio');
- numAudioTracks--;
- }
- if (numVideoTracks > 0) {
- pc._createTransceiver('video');
- numVideoTracks--;
- }
- }
+ RTCPeerConnection.prototype.setLocalDescription = function(description) {
+ var pc = this;
- var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
- pc._sdpSessionVersion++);
- pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
- // For each track, create an ice gatherer, ice transport,
- // dtls transport, potentially rtpsender and rtpreceiver.
- var track = transceiver.track;
- var kind = transceiver.kind;
- var mid = transceiver.mid || SDPUtils.generateIdentifier();
- transceiver.mid = mid;
-
- if (!transceiver.iceGatherer) {
- transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
- pc.usingBundle);
- }
+ // Note: pranswer is not supported.
+ if (['offer', 'answer'].indexOf(description.type) === -1) {
+ return Promise.reject(makeError('TypeError',
+ 'Unsupported type "' + description.type + '"'));
+ }
- var localCapabilities = window.RTCRtpSender.getCapabilities(kind);
- // filter RTX until additional stuff needed for RTX is implemented
- // in adapter.js
- if (edgeVersion < 15019) {
- localCapabilities.codecs = localCapabilities.codecs.filter(
- function(codec) {
- return codec.name !== 'rtx';
+ if (!isActionAllowedInSignalingState('setLocalDescription',
+ description.type, pc.signalingState) || pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not set local ' + description.type +
+ ' in state ' + pc.signalingState));
+ }
+
+ var sections;
+ var sessionpart;
+ if (description.type === 'offer') {
+ // VERY limited support for SDP munging. Limited to:
+ // * changing the order of codecs
+ sections = SDPUtils.splitSections(description.sdp);
+ sessionpart = sections.shift();
+ sections.forEach(function(mediaSection, sdpMLineIndex) {
+ var caps = SDPUtils.parseRtpParameters(mediaSection);
+ pc.transceivers[sdpMLineIndex].localCapabilities = caps;
});
- }
- localCapabilities.codecs.forEach(function(codec) {
- // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552
- // by adding level-asymmetry-allowed=1
- if (codec.name === 'H264' &&
- codec.parameters['level-asymmetry-allowed'] === undefined) {
- codec.parameters['level-asymmetry-allowed'] = '1';
- }
-
- // for subsequent offers, we might have to re-use the payload
- // type of the last offer.
- if (transceiver.remoteCapabilities &&
- transceiver.remoteCapabilities.codecs) {
- transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {
- if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&
- codec.clockRate === remoteCodec.clockRate) {
- codec.preferredPayloadType = remoteCodec.payloadType;
+
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ pc._gather(transceiver.mid, sdpMLineIndex);
+ });
+ } else if (description.type === 'answer') {
+ sections = SDPUtils.splitSections(pc._remoteDescription.sdp);
+ sessionpart = sections.shift();
+ var isIceLite = SDPUtils.matchPrefix(sessionpart,
+ 'a=ice-lite').length > 0;
+ sections.forEach(function(mediaSection, sdpMLineIndex) {
+ var transceiver = pc.transceivers[sdpMLineIndex];
+ var iceGatherer = transceiver.iceGatherer;
+ var iceTransport = transceiver.iceTransport;
+ var dtlsTransport = transceiver.dtlsTransport;
+ var localCapabilities = transceiver.localCapabilities;
+ var remoteCapabilities = transceiver.remoteCapabilities;
+
+ // treat bundle-only as not-rejected.
+ var rejected = SDPUtils.isRejected(mediaSection) &&
+ SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
+
+ if (!rejected && !transceiver.rejected) {
+ var remoteIceParameters = SDPUtils.getIceParameters(
+ mediaSection, sessionpart);
+ var remoteDtlsParameters = SDPUtils.getDtlsParameters(
+ mediaSection, sessionpart);
+ if (isIceLite) {
+ remoteDtlsParameters.role = 'server';
+ }
+
+ if (!pc.usingBundle || sdpMLineIndex === 0) {
+ pc._gather(transceiver.mid, sdpMLineIndex);
+ if (iceTransport.state === 'new') {
+ iceTransport.start(iceGatherer, remoteIceParameters,
+ isIceLite ? 'controlling' : 'controlled');
+ }
+ if (dtlsTransport.state === 'new') {
+ dtlsTransport.start(remoteDtlsParameters);
+ }
+ }
+
+ // Calculate intersection of capabilities.
+ var params = getCommonCapabilities(localCapabilities,
+ remoteCapabilities);
+
+ // Start the RTCRtpSender. The RTCRtpReceiver for this
+ // transceiver has already been started in setRemoteDescription.
+ pc._transceive(transceiver,
+ params.codecs.length > 0,
+ false);
}
});
}
- });
- localCapabilities.headerExtensions.forEach(function(hdrExt) {
- var remoteExtensions = transceiver.remoteCapabilities &&
- transceiver.remoteCapabilities.headerExtensions || [];
- remoteExtensions.forEach(function(rHdrExt) {
- if (hdrExt.uri === rHdrExt.uri) {
- hdrExt.id = rHdrExt.id;
- }
- });
- });
- // generate an ssrc now, to be used later in rtpSender.send
- var sendEncodingParameters = transceiver.sendEncodingParameters || [{
- ssrc: (2 * sdpMLineIndex + 1) * 1001
- }];
- if (track) {
- // add RTX
- if (edgeVersion >= 15019 && kind === 'video' &&
- !sendEncodingParameters[0].rtx) {
- sendEncodingParameters[0].rtx = {
- ssrc: sendEncodingParameters[0].ssrc + 1
- };
+ pc._localDescription = {
+ type: description.type,
+ sdp: description.sdp
+ };
+ if (description.type === 'offer') {
+ pc._updateSignalingState('have-local-offer');
+ } else {
+ pc._updateSignalingState('stable');
}
- }
-
- if (transceiver.wantReceive) {
- transceiver.rtpReceiver = new window.RTCRtpReceiver(
- transceiver.dtlsTransport, kind);
- }
- transceiver.localCapabilities = localCapabilities;
- transceiver.sendEncodingParameters = sendEncodingParameters;
- });
+ return Promise.resolve();
+ };
- // always offer BUNDLE and dispose on return if not supported.
- if (pc._config.bundlePolicy !== 'max-compat') {
- sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
- return t.mid;
- }).join(' ') + '\r\n';
- }
- sdp += 'a=ice-options:trickle\r\n';
-
- pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
- sdp += writeMediaSection(transceiver, transceiver.localCapabilities,
- 'offer', transceiver.stream, pc._dtlsRole);
- sdp += 'a=rtcp-rsize\r\n';
-
- if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&
- (sdpMLineIndex === 0 || !pc.usingBundle)) {
- transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {
- cand.component = 1;
- sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n';
- });
+ RTCPeerConnection.prototype.setRemoteDescription = function(description) {
+ var pc = this;
- if (transceiver.iceGatherer.state === 'completed') {
- sdp += 'a=end-of-candidates\r\n';
+ // Note: pranswer is not supported.
+ if (['offer', 'answer'].indexOf(description.type) === -1) {
+ return Promise.reject(makeError('TypeError',
+ 'Unsupported type "' + description.type + '"'));
}
- }
- });
- var desc = new window.RTCSessionDescription({
- type: 'offer',
- sdp: sdp
- });
- return Promise.resolve(desc);
- };
+ if (!isActionAllowedInSignalingState('setRemoteDescription',
+ description.type, pc.signalingState) || pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not set remote ' + description.type +
+ ' in state ' + pc.signalingState));
+ }
- RTCPeerConnection.prototype.createAnswer = function() {
- var pc = this;
+ var streams = {};
+ pc.remoteStreams.forEach(function(stream) {
+ streams[stream.id] = stream;
+ });
+ var receiverList = [];
+ var sections = SDPUtils.splitSections(description.sdp);
+ var sessionpart = sections.shift();
+ var isIceLite = SDPUtils.matchPrefix(sessionpart,
+ 'a=ice-lite').length > 0;
+ var usingBundle = SDPUtils.matchPrefix(sessionpart,
+ 'a=group:BUNDLE ').length > 0;
+ pc.usingBundle = usingBundle;
+ var iceOptions = SDPUtils.matchPrefix(sessionpart,
+ 'a=ice-options:')[0];
+ if (iceOptions) {
+ pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')
+ .indexOf('trickle') >= 0;
+ } else {
+ pc.canTrickleIceCandidates = false;
+ }
- if (pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError',
- 'Can not call createAnswer after close'));
- }
+ sections.forEach(function(mediaSection, sdpMLineIndex) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var kind = SDPUtils.getKind(mediaSection);
+ // treat bundle-only as not-rejected.
+ var rejected = SDPUtils.isRejected(mediaSection) &&
+ SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
+ var protocol = lines[0].substr(2).split(' ')[2];
+
+ var direction = SDPUtils.getDirection(mediaSection, sessionpart);
+ var remoteMsid = SDPUtils.parseMsid(mediaSection);
+
+ var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();
+
+ // Reject datachannels which are not implemented yet.
+ if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' ||
+ protocol === 'UDP/DTLS/SCTP'))) {
+ // TODO: this is dangerous in the case where a non-rejected m-line
+ // becomes rejected.
+ pc.transceivers[sdpMLineIndex] = {
+ mid: mid,
+ kind: kind,
+ protocol: protocol,
+ rejected: true
+ };
+ return;
+ }
- if (!(pc.signalingState === 'have-remote-offer' ||
- pc.signalingState === 'have-local-pranswer')) {
- return Promise.reject(makeError('InvalidStateError',
- 'Can not call createAnswer in signalingState ' + pc.signalingState));
- }
+ if (!rejected && pc.transceivers[sdpMLineIndex] &&
+ pc.transceivers[sdpMLineIndex].rejected) {
+ // recycle a rejected transceiver.
+ pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);
+ }
- var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
- pc._sdpSessionVersion++);
- if (pc.usingBundle) {
- sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
- return t.mid;
- }).join(' ') + '\r\n';
- }
- var mediaSectionsInOffer = SDPUtils.getMediaSections(
- pc.remoteDescription.sdp).length;
- pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
- if (sdpMLineIndex + 1 > mediaSectionsInOffer) {
- return;
- }
- if (transceiver.rejected) {
- if (transceiver.kind === 'application') {
- sdp += 'm=application 0 DTLS/SCTP 5000\r\n';
- } else if (transceiver.kind === 'audio') {
- sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' +
- 'a=rtpmap:0 PCMU/8000\r\n';
- } else if (transceiver.kind === 'video') {
- sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' +
- 'a=rtpmap:120 VP8/90000\r\n';
- }
- sdp += 'c=IN IP4 0.0.0.0\r\n' +
- 'a=inactive\r\n' +
- 'a=mid:' + transceiver.mid + '\r\n';
- return;
- }
+ var transceiver;
+ var iceGatherer;
+ var iceTransport;
+ var dtlsTransport;
+ var rtpReceiver;
+ var sendEncodingParameters;
+ var recvEncodingParameters;
+ var localCapabilities;
+
+ var track;
+ // FIXME: ensure the mediaSection has rtcp-mux set.
+ var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);
+ var remoteIceParameters;
+ var remoteDtlsParameters;
+ if (!rejected) {
+ remoteIceParameters = SDPUtils.getIceParameters(mediaSection,
+ sessionpart);
+ remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,
+ sessionpart);
+ remoteDtlsParameters.role = 'client';
+ }
+ recvEncodingParameters =
+ SDPUtils.parseRtpEncodingParameters(mediaSection);
+
+ var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);
+
+ var isComplete = SDPUtils.matchPrefix(mediaSection,
+ 'a=end-of-candidates', sessionpart).length > 0;
+ var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')
+ .map(function(cand) {
+ return SDPUtils.parseCandidate(cand);
+ })
+ .filter(function(cand) {
+ return cand.component === 1;
+ });
- // FIXME: look at direction.
- if (transceiver.stream) {
- var localTrack;
- if (transceiver.kind === 'audio') {
- localTrack = transceiver.stream.getAudioTracks()[0];
- } else if (transceiver.kind === 'video') {
- localTrack = transceiver.stream.getVideoTracks()[0];
- }
- if (localTrack) {
- // add RTX
- if (edgeVersion >= 15019 && transceiver.kind === 'video' &&
- !transceiver.sendEncodingParameters[0].rtx) {
- transceiver.sendEncodingParameters[0].rtx = {
- ssrc: transceiver.sendEncodingParameters[0].ssrc + 1
- };
+ // Check if we can use BUNDLE and dispose transports.
+ if ((description.type === 'offer' || description.type === 'answer') &&
+ !rejected && usingBundle && sdpMLineIndex > 0 &&
+ pc.transceivers[sdpMLineIndex]) {
+ pc._disposeIceAndDtlsTransports(sdpMLineIndex);
+ pc.transceivers[sdpMLineIndex].iceGatherer =
+ pc.transceivers[0].iceGatherer;
+ pc.transceivers[sdpMLineIndex].iceTransport =
+ pc.transceivers[0].iceTransport;
+ pc.transceivers[sdpMLineIndex].dtlsTransport =
+ pc.transceivers[0].dtlsTransport;
+ if (pc.transceivers[sdpMLineIndex].rtpSender) {
+ pc.transceivers[sdpMLineIndex].rtpSender.setTransport(
+ pc.transceivers[0].dtlsTransport);
+ }
+ if (pc.transceivers[sdpMLineIndex].rtpReceiver) {
+ pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(
+ pc.transceivers[0].dtlsTransport);
+ }
}
- }
- }
+ if (description.type === 'offer' && !rejected) {
+ transceiver = pc.transceivers[sdpMLineIndex] ||
+ pc._createTransceiver(kind);
+ transceiver.mid = mid;
+
+ if (!transceiver.iceGatherer) {
+ transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
+ usingBundle);
+ }
- // Calculate intersection of capabilities.
- var commonCapabilities = getCommonCapabilities(
- transceiver.localCapabilities,
- transceiver.remoteCapabilities);
+ if (cands.length && transceiver.iceTransport.state === 'new') {
+ if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {
+ transceiver.iceTransport.setRemoteCandidates(cands);
+ } else {
+ cands.forEach(function(candidate) {
+ maybeAddCandidate(transceiver.iceTransport, candidate);
+ });
+ }
+ }
- var hasRtx = commonCapabilities.codecs.filter(function(c) {
- return c.name.toLowerCase() === 'rtx';
- }).length;
- if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
- delete transceiver.sendEncodingParameters[0].rtx;
- }
+ localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);
- sdp += writeMediaSection(transceiver, commonCapabilities,
- 'answer', transceiver.stream, pc._dtlsRole);
- if (transceiver.rtcpParameters &&
- transceiver.rtcpParameters.reducedSize) {
- sdp += 'a=rtcp-rsize\r\n';
- }
- });
-
- var desc = new window.RTCSessionDescription({
- type: 'answer',
- sdp: sdp
- });
- return Promise.resolve(desc);
- };
-
- RTCPeerConnection.prototype.addIceCandidate = function(candidate) {
- var pc = this;
- var sections;
- if (candidate && !(candidate.sdpMLineIndex !== undefined ||
- candidate.sdpMid)) {
- return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));
- }
+ // filter RTX until additional stuff needed for RTX is implemented
+ // in adapter.js
+ if (edgeVersion < 15019) {
+ localCapabilities.codecs = localCapabilities.codecs.filter(
+ function(codec) {
+ return codec.name !== 'rtx';
+ });
+ }
- // TODO: needs to go into ops queue.
- return new Promise(function(resolve, reject) {
- if (!pc.remoteDescription) {
- return reject(makeError('InvalidStateError',
- 'Can not add ICE candidate without a remote description'));
- } else if (!candidate || candidate.candidate === '') {
- for (var j = 0; j < pc.transceivers.length; j++) {
- if (pc.transceivers[j].rejected) {
- continue;
- }
- pc.transceivers[j].iceTransport.addRemoteCandidate({});
- sections = SDPUtils.getMediaSections(pc.remoteDescription.sdp);
- sections[j] += 'a=end-of-candidates\r\n';
- pc.remoteDescription.sdp =
- SDPUtils.getDescription(pc.remoteDescription.sdp) +
- sections.join('');
- if (pc.usingBundle) {
- break;
+ sendEncodingParameters = transceiver.sendEncodingParameters || [{
+ ssrc: (2 * sdpMLineIndex + 2) * 1001
+ }];
+
+ // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
+ var isNewTrack = false;
+ if (direction === 'sendrecv' || direction === 'sendonly') {
+ isNewTrack = !transceiver.rtpReceiver;
+ rtpReceiver = transceiver.rtpReceiver ||
+ new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
+
+ if (isNewTrack) {
+ var stream;
+ track = rtpReceiver.track;
+ // FIXME: does not work with Plan B.
+ if (remoteMsid && remoteMsid.stream === '-') {
+ // no-op. a stream id of '-' means: no associated stream.
+ } else if (remoteMsid) {
+ if (!streams[remoteMsid.stream]) {
+ streams[remoteMsid.stream] = new window.MediaStream();
+ Object.defineProperty(streams[remoteMsid.stream], 'id', {
+ get: function() {
+ return remoteMsid.stream;
+ }
+ });
+ }
+ Object.defineProperty(track, 'id', {
+ get: function() {
+ return remoteMsid.track;
+ }
+ });
+ stream = streams[remoteMsid.stream];
+ } else {
+ if (!streams.default) {
+ streams.default = new window.MediaStream();
+ }
+ stream = streams.default;
+ }
+ if (stream) {
+ addTrackToStreamAndFireEvent(track, stream);
+ transceiver.associatedRemoteMediaStreams.push(stream);
+ }
+ receiverList.push([track, rtpReceiver, stream]);
+ }
+ } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {
+ transceiver.associatedRemoteMediaStreams.forEach(function(s) {
+ var nativeTrack = s.getTracks().find(function(t) {
+ return t.id === transceiver.rtpReceiver.track.id;
+ });
+ if (nativeTrack) {
+ removeTrackFromStreamAndFireEvent(nativeTrack, s);
+ }
+ });
+ transceiver.associatedRemoteMediaStreams = [];
+ }
+
+ transceiver.localCapabilities = localCapabilities;
+ transceiver.remoteCapabilities = remoteCapabilities;
+ transceiver.rtpReceiver = rtpReceiver;
+ transceiver.rtcpParameters = rtcpParameters;
+ transceiver.sendEncodingParameters = sendEncodingParameters;
+ transceiver.recvEncodingParameters = recvEncodingParameters;
+
+ // Start the RTCRtpReceiver now. The RTPSender is started in
+ // setLocalDescription.
+ pc._transceive(pc.transceivers[sdpMLineIndex],
+ false,
+ isNewTrack);
+ } else if (description.type === 'answer' && !rejected) {
+ transceiver = pc.transceivers[sdpMLineIndex];
+ iceGatherer = transceiver.iceGatherer;
+ iceTransport = transceiver.iceTransport;
+ dtlsTransport = transceiver.dtlsTransport;
+ rtpReceiver = transceiver.rtpReceiver;
+ sendEncodingParameters = transceiver.sendEncodingParameters;
+ localCapabilities = transceiver.localCapabilities;
+
+ pc.transceivers[sdpMLineIndex].recvEncodingParameters =
+ recvEncodingParameters;
+ pc.transceivers[sdpMLineIndex].remoteCapabilities =
+ remoteCapabilities;
+ pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;
+
+ if (cands.length && iceTransport.state === 'new') {
+ if ((isIceLite || isComplete) &&
+ (!usingBundle || sdpMLineIndex === 0)) {
+ iceTransport.setRemoteCandidates(cands);
+ } else {
+ cands.forEach(function(candidate) {
+ maybeAddCandidate(transceiver.iceTransport, candidate);
+ });
+ }
+ }
+
+ if (!usingBundle || sdpMLineIndex === 0) {
+ if (iceTransport.state === 'new') {
+ iceTransport.start(iceGatherer, remoteIceParameters,
+ 'controlling');
+ }
+ if (dtlsTransport.state === 'new') {
+ dtlsTransport.start(remoteDtlsParameters);
+ }
+ }
+
+ // If the offer contained RTX but the answer did not,
+ // remove RTX from sendEncodingParameters.
+ var commonCapabilities = getCommonCapabilities(
+ transceiver.localCapabilities,
+ transceiver.remoteCapabilities);
+
+ var hasRtx = commonCapabilities.codecs.filter(function(c) {
+ return c.name.toLowerCase() === 'rtx';
+ }).length;
+ if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
+ delete transceiver.sendEncodingParameters[0].rtx;
+ }
+
+ pc._transceive(transceiver,
+ direction === 'sendrecv' || direction === 'recvonly',
+ direction === 'sendrecv' || direction === 'sendonly');
+
+ // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
+ if (rtpReceiver &&
+ (direction === 'sendrecv' || direction === 'sendonly')) {
+ track = rtpReceiver.track;
+ if (remoteMsid) {
+ if (!streams[remoteMsid.stream]) {
+ streams[remoteMsid.stream] = new window.MediaStream();
+ }
+ addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);
+ receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);
+ } else {
+ if (!streams.default) {
+ streams.default = new window.MediaStream();
+ }
+ addTrackToStreamAndFireEvent(track, streams.default);
+ receiverList.push([track, rtpReceiver, streams.default]);
+ }
+ } else {
+ // FIXME: actually the receiver should be created later.
+ delete transceiver.rtpReceiver;
+ }
}
+ });
+
+ if (pc._dtlsRole === undefined) {
+ pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';
}
- } else {
- var sdpMLineIndex = candidate.sdpMLineIndex;
- if (candidate.sdpMid) {
- for (var i = 0; i < pc.transceivers.length; i++) {
- if (pc.transceivers[i].mid === candidate.sdpMid) {
- sdpMLineIndex = i;
- break;
+
+ pc._remoteDescription = {
+ type: description.type,
+ sdp: description.sdp
+ };
+ if (description.type === 'offer') {
+ pc._updateSignalingState('have-remote-offer');
+ } else {
+ pc._updateSignalingState('stable');
+ }
+ Object.keys(streams).forEach(function(sid) {
+ var stream = streams[sid];
+ if (stream.getTracks().length) {
+ if (pc.remoteStreams.indexOf(stream) === -1) {
+ pc.remoteStreams.push(stream);
+ var event = new Event('addstream');
+ event.stream = stream;
+ window.setTimeout(function() {
+ pc._dispatchEvent('addstream', event);
+ });
}
+
+ receiverList.forEach(function(item) {
+ var track = item[0];
+ var receiver = item[1];
+ if (stream.id !== item[2].id) {
+ return;
+ }
+ fireAddTrack(pc, track, receiver, [stream]);
+ });
}
- }
- var transceiver = pc.transceivers[sdpMLineIndex];
- if (transceiver) {
- if (transceiver.rejected) {
- return resolve();
- }
- var cand = Object.keys(candidate.candidate).length > 0 ?
- SDPUtils.parseCandidate(candidate.candidate) : {};
- // Ignore Chrome's invalid candidates since Edge does not like them.
- if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {
- return resolve();
- }
- // Ignore RTCP candidates, we assume RTCP-MUX.
- if (cand.component && cand.component !== 1) {
- return resolve();
- }
- // when using bundle, avoid adding candidates to the wrong
- // ice transport. And avoid adding candidates added in the SDP.
- if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&
- transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {
- if (!maybeAddCandidate(transceiver.iceTransport, cand)) {
- return reject(makeError('OperationError',
- 'Can not add ICE candidate'));
+ });
+ receiverList.forEach(function(item) {
+ if (item[2]) {
+ return;
+ }
+ fireAddTrack(pc, item[0], item[1], []);
+ });
+
+ // check whether addIceCandidate({}) was called within four seconds after
+ // setRemoteDescription.
+ window.setTimeout(function() {
+ if (!(pc && pc.transceivers)) {
+ return;
+ }
+ pc.transceivers.forEach(function(transceiver) {
+ if (transceiver.iceTransport &&
+ transceiver.iceTransport.state === 'new' &&
+ transceiver.iceTransport.getRemoteCandidates().length > 0) {
+ console.warn('Timeout for addRemoteCandidate. Consider sending ' +
+ 'an end-of-candidates notification');
+ transceiver.iceTransport.addRemoteCandidate({});
}
+ });
+ }, 4000);
+
+ return Promise.resolve();
+ };
+
+ RTCPeerConnection.prototype.close = function() {
+ this.transceivers.forEach(function(transceiver) {
+ /* not yet
+ if (transceiver.iceGatherer) {
+ transceiver.iceGatherer.close();
}
+ */
+ if (transceiver.iceTransport) {
+ transceiver.iceTransport.stop();
+ }
+ if (transceiver.dtlsTransport) {
+ transceiver.dtlsTransport.stop();
+ }
+ if (transceiver.rtpSender) {
+ transceiver.rtpSender.stop();
+ }
+ if (transceiver.rtpReceiver) {
+ transceiver.rtpReceiver.stop();
+ }
+ });
+ // FIXME: clean up tracks, local streams, remote streams, etc
+ this._isClosed = true;
+ this._updateSignalingState('closed');
+ };
+
+ // Update the signaling state.
+ RTCPeerConnection.prototype._updateSignalingState = function(newState) {
+ this.signalingState = newState;
+ var event = new Event('signalingstatechange');
+ this._dispatchEvent('signalingstatechange', event);
+ };
- // update the remoteDescription.
- var candidateString = candidate.candidate.trim();
- if (candidateString.indexOf('a=') === 0) {
- candidateString = candidateString.substr(2);
+ // Determine whether to fire the negotiationneeded event.
+ RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {
+ var pc = this;
+ if (this.signalingState !== 'stable' || this.needNegotiation === true) {
+ return;
+ }
+ this.needNegotiation = true;
+ window.setTimeout(function() {
+ if (pc.needNegotiation) {
+ pc.needNegotiation = false;
+ var event = new Event('negotiationneeded');
+ pc._dispatchEvent('negotiationneeded', event);
}
- sections = SDPUtils.getMediaSections(pc.remoteDescription.sdp);
- sections[sdpMLineIndex] += 'a=' +
- (cand.type ? candidateString : 'end-of-candidates')
- + '\r\n';
- pc.remoteDescription.sdp =
- SDPUtils.getDescription(pc.remoteDescription.sdp) +
- sections.join('');
- } else {
- return reject(makeError('OperationError',
- 'Can not add ICE candidate'));
+ }, 0);
+ };
+
+ // Update the ice connection state.
+ RTCPeerConnection.prototype._updateIceConnectionState = function() {
+ var newState;
+ var states = {
+ 'new': 0,
+ closed: 0,
+ checking: 0,
+ connected: 0,
+ completed: 0,
+ disconnected: 0,
+ failed: 0
+ };
+ this.transceivers.forEach(function(transceiver) {
+ states[transceiver.iceTransport.state]++;
+ });
+
+ newState = 'new';
+ if (states.failed > 0) {
+ newState = 'failed';
+ } else if (states.checking > 0) {
+ newState = 'checking';
+ } else if (states.disconnected > 0) {
+ newState = 'disconnected';
+ } else if (states.new > 0) {
+ newState = 'new';
+ } else if (states.connected > 0) {
+ newState = 'connected';
+ } else if (states.completed > 0) {
+ newState = 'completed';
}
- }
- resolve();
- });
- };
-
- RTCPeerConnection.prototype.getStats = function() {
- var promises = [];
- this.transceivers.forEach(function(transceiver) {
- ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',
- 'dtlsTransport'].forEach(function(method) {
- if (transceiver[method]) {
- promises.push(transceiver[method].getStats());
+
+ if (newState !== this.iceConnectionState) {
+ this.iceConnectionState = newState;
+ var event = new Event('iceconnectionstatechange');
+ this._dispatchEvent('iceconnectionstatechange', event);
}
- });
- });
- var fixStatsType = function(stat) {
- return {
- inboundrtp: 'inbound-rtp',
- outboundrtp: 'outbound-rtp',
- candidatepair: 'candidate-pair',
- localcandidate: 'local-candidate',
- remotecandidate: 'remote-candidate'
- }[stat.type] || stat.type;
- };
- return new Promise(function(resolve) {
- // shim getStats with maplike support
- var results = new Map();
- Promise.all(promises).then(function(res) {
- res.forEach(function(result) {
- Object.keys(result).forEach(function(id) {
- result[id].type = fixStatsType(result[id]);
- results.set(id, result[id]);
- });
+ };
+
+ // Update the connection state.
+ RTCPeerConnection.prototype._updateConnectionState = function() {
+ var newState;
+ var states = {
+ 'new': 0,
+ closed: 0,
+ connecting: 0,
+ connected: 0,
+ completed: 0,
+ disconnected: 0,
+ failed: 0
+ };
+ this.transceivers.forEach(function(transceiver) {
+ states[transceiver.iceTransport.state]++;
+ states[transceiver.dtlsTransport.state]++;
});
- resolve(results);
- });
- });
- };
-
- // legacy callback shims. Should be moved to adapter.js some days.
- var methods = ['createOffer', 'createAnswer'];
- methods.forEach(function(method) {
- var nativeMethod = RTCPeerConnection.prototype[method];
- RTCPeerConnection.prototype[method] = function() {
- var args = arguments;
- if (typeof args[0] === 'function' ||
- typeof args[1] === 'function') { // legacy
- return nativeMethod.apply(this, [arguments[2]])
- .then(function(description) {
- if (typeof args[0] === 'function') {
- args[0].apply(null, [description]);
+ // ICETransport.completed and connected are the same for this purpose.
+ states.connected += states.completed;
+
+ newState = 'new';
+ if (states.failed > 0) {
+ newState = 'failed';
+ } else if (states.connecting > 0) {
+ newState = 'connecting';
+ } else if (states.disconnected > 0) {
+ newState = 'disconnected';
+ } else if (states.new > 0) {
+ newState = 'new';
+ } else if (states.connected > 0) {
+ newState = 'connected';
+ }
+
+ if (newState !== this.connectionState) {
+ this.connectionState = newState;
+ var event = new Event('connectionstatechange');
+ this._dispatchEvent('connectionstatechange', event);
+ }
+ };
+
+ RTCPeerConnection.prototype.createOffer = function() {
+ var pc = this;
+
+ if (pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not call createOffer after close'));
+ }
+
+ var numAudioTracks = pc.transceivers.filter(function(t) {
+ return t.kind === 'audio';
+ }).length;
+ var numVideoTracks = pc.transceivers.filter(function(t) {
+ return t.kind === 'video';
+ }).length;
+
+ // Determine number of audio and video tracks we need to send/recv.
+ var offerOptions = arguments[0];
+ if (offerOptions) {
+ // Reject Chrome legacy constraints.
+ if (offerOptions.mandatory || offerOptions.optional) {
+ throw new TypeError(
+ 'Legacy mandatory/optional constraints not supported.');
+ }
+ if (offerOptions.offerToReceiveAudio !== undefined) {
+ if (offerOptions.offerToReceiveAudio === true) {
+ numAudioTracks = 1;
+ } else if (offerOptions.offerToReceiveAudio === false) {
+ numAudioTracks = 0;
+ } else {
+ numAudioTracks = offerOptions.offerToReceiveAudio;
}
- }, function(error) {
- if (typeof args[1] === 'function') {
- args[1].apply(null, [error]);
+ }
+ if (offerOptions.offerToReceiveVideo !== undefined) {
+ if (offerOptions.offerToReceiveVideo === true) {
+ numVideoTracks = 1;
+ } else if (offerOptions.offerToReceiveVideo === false) {
+ numVideoTracks = 0;
+ } else {
+ numVideoTracks = offerOptions.offerToReceiveVideo;
}
- });
- }
- return nativeMethod.apply(this, arguments);
- };
- });
-
- methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];
- methods.forEach(function(method) {
- var nativeMethod = RTCPeerConnection.prototype[method];
- RTCPeerConnection.prototype[method] = function() {
- var args = arguments;
- if (typeof args[1] === 'function' ||
- typeof args[2] === 'function') { // legacy
- return nativeMethod.apply(this, arguments)
- .then(function() {
- if (typeof args[1] === 'function') {
- args[1].apply(null);
+ }
+ }
+
+ pc.transceivers.forEach(function(transceiver) {
+ if (transceiver.kind === 'audio') {
+ numAudioTracks--;
+ if (numAudioTracks < 0) {
+ transceiver.wantReceive = false;
+ }
+ } else if (transceiver.kind === 'video') {
+ numVideoTracks--;
+ if (numVideoTracks < 0) {
+ transceiver.wantReceive = false;
+ }
+ }
+ });
+
+ // Create M-lines for recvonly streams.
+ while (numAudioTracks > 0 || numVideoTracks > 0) {
+ if (numAudioTracks > 0) {
+ pc._createTransceiver('audio');
+ numAudioTracks--;
+ }
+ if (numVideoTracks > 0) {
+ pc._createTransceiver('video');
+ numVideoTracks--;
+ }
+ }
+
+ var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
+ pc._sdpSessionVersion++);
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ // For each track, create an ice gatherer, ice transport,
+ // dtls transport, potentially rtpsender and rtpreceiver.
+ var track = transceiver.track;
+ var kind = transceiver.kind;
+ var mid = transceiver.mid || SDPUtils.generateIdentifier();
+ transceiver.mid = mid;
+
+ if (!transceiver.iceGatherer) {
+ transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,
+ pc.usingBundle);
+ }
+
+ var localCapabilities = window.RTCRtpSender.getCapabilities(kind);
+ // filter RTX until additional stuff needed for RTX is implemented
+ // in adapter.js
+ if (edgeVersion < 15019) {
+ localCapabilities.codecs = localCapabilities.codecs.filter(
+ function(codec) {
+ return codec.name !== 'rtx';
+ });
+ }
+ localCapabilities.codecs.forEach(function(codec) {
+ // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552
+ // by adding level-asymmetry-allowed=1
+ if (codec.name === 'H264' &&
+ codec.parameters['level-asymmetry-allowed'] === undefined) {
+ codec.parameters['level-asymmetry-allowed'] = '1';
}
- }, function(error) {
- if (typeof args[2] === 'function') {
- args[2].apply(null, [error]);
+
+ // for subsequent offers, we might have to re-use the payload
+ // type of the last offer.
+ if (transceiver.remoteCapabilities &&
+ transceiver.remoteCapabilities.codecs) {
+ transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {
+ if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&
+ codec.clockRate === remoteCodec.clockRate) {
+ codec.preferredPayloadType = remoteCodec.payloadType;
+ }
+ });
}
});
- }
- return nativeMethod.apply(this, arguments);
- };
- });
-
- // getStats is special. It doesn't have a spec legacy method yet we support
- // getStats(something, cb) without error callbacks.
- ['getStats'].forEach(function(method) {
- var nativeMethod = RTCPeerConnection.prototype[method];
- RTCPeerConnection.prototype[method] = function() {
- var args = arguments;
- if (typeof args[1] === 'function') {
- return nativeMethod.apply(this, arguments)
- .then(function() {
- if (typeof args[1] === 'function') {
- args[1].apply(null);
+ localCapabilities.headerExtensions.forEach(function(hdrExt) {
+ var remoteExtensions = transceiver.remoteCapabilities &&
+ transceiver.remoteCapabilities.headerExtensions || [];
+ remoteExtensions.forEach(function(rHdrExt) {
+ if (hdrExt.uri === rHdrExt.uri) {
+ hdrExt.id = rHdrExt.id;
+ }
+ });
+ });
+
+ // generate an ssrc now, to be used later in rtpSender.send
+ var sendEncodingParameters = transceiver.sendEncodingParameters || [{
+ ssrc: (2 * sdpMLineIndex + 1) * 1001
+ }];
+ if (track) {
+ // add RTX
+ if (edgeVersion >= 15019 && kind === 'video' &&
+ !sendEncodingParameters[0].rtx) {
+ sendEncodingParameters[0].rtx = {
+ ssrc: sendEncodingParameters[0].ssrc + 1
+ };
+ }
+ }
+
+ if (transceiver.wantReceive) {
+ transceiver.rtpReceiver = new window.RTCRtpReceiver(
+ transceiver.dtlsTransport, kind);
+ }
+
+ transceiver.localCapabilities = localCapabilities;
+ transceiver.sendEncodingParameters = sendEncodingParameters;
+ });
+
+ // always offer BUNDLE and dispose on return if not supported.
+ if (pc._config.bundlePolicy !== 'max-compat') {
+ sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
+ return t.mid;
+ }).join(' ') + '\r\n';
+ }
+ sdp += 'a=ice-options:trickle\r\n';
+
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ sdp += writeMediaSection(transceiver, transceiver.localCapabilities,
+ 'offer', transceiver.stream, pc._dtlsRole);
+ sdp += 'a=rtcp-rsize\r\n';
+
+ if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&
+ (sdpMLineIndex === 0 || !pc.usingBundle)) {
+ transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {
+ cand.component = 1;
+ sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n';
+ });
+
+ if (transceiver.iceGatherer.state === 'completed') {
+ sdp += 'a=end-of-candidates\r\n';
+ }
+ }
+ });
+
+ var desc = new window.RTCSessionDescription({
+ type: 'offer',
+ sdp: sdp
+ });
+ return Promise.resolve(desc);
+ };
+
+ RTCPeerConnection.prototype.createAnswer = function() {
+ var pc = this;
+
+ if (pc._isClosed) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not call createAnswer after close'));
+ }
+
+ if (!(pc.signalingState === 'have-remote-offer' ||
+ pc.signalingState === 'have-local-pranswer')) {
+ return Promise.reject(makeError('InvalidStateError',
+ 'Can not call createAnswer in signalingState ' + pc.signalingState));
+ }
+
+ var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,
+ pc._sdpSessionVersion++);
+ if (pc.usingBundle) {
+ sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {
+ return t.mid;
+ }).join(' ') + '\r\n';
+ }
+ sdp += 'a=ice-options:trickle\r\n';
+
+ var mediaSectionsInOffer = SDPUtils.getMediaSections(
+ pc._remoteDescription.sdp).length;
+ pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {
+ if (sdpMLineIndex + 1 > mediaSectionsInOffer) {
+ return;
+ }
+ if (transceiver.rejected) {
+ if (transceiver.kind === 'application') {
+ if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt
+ sdp += 'm=application 0 DTLS/SCTP 5000\r\n';
+ } else {
+ sdp += 'm=application 0 ' + transceiver.protocol +
+ ' webrtc-datachannel\r\n';
+ }
+ } else if (transceiver.kind === 'audio') {
+ sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' +
+ 'a=rtpmap:0 PCMU/8000\r\n';
+ } else if (transceiver.kind === 'video') {
+ sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' +
+ 'a=rtpmap:120 VP8/90000\r\n';
+ }
+ sdp += 'c=IN IP4 0.0.0.0\r\n' +
+ 'a=inactive\r\n' +
+ 'a=mid:' + transceiver.mid + '\r\n';
+ return;
+ }
+
+ // FIXME: look at direction.
+ if (transceiver.stream) {
+ var localTrack;
+ if (transceiver.kind === 'audio') {
+ localTrack = transceiver.stream.getAudioTracks()[0];
+ } else if (transceiver.kind === 'video') {
+ localTrack = transceiver.stream.getVideoTracks()[0];
+ }
+ if (localTrack) {
+ // add RTX
+ if (edgeVersion >= 15019 && transceiver.kind === 'video' &&
+ !transceiver.sendEncodingParameters[0].rtx) {
+ transceiver.sendEncodingParameters[0].rtx = {
+ ssrc: transceiver.sendEncodingParameters[0].ssrc + 1
+ };
+ }
+ }
+ }
+
+ // Calculate intersection of capabilities.
+ var commonCapabilities = getCommonCapabilities(
+ transceiver.localCapabilities,
+ transceiver.remoteCapabilities);
+
+ var hasRtx = commonCapabilities.codecs.filter(function(c) {
+ return c.name.toLowerCase() === 'rtx';
+ }).length;
+ if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
+ delete transceiver.sendEncodingParameters[0].rtx;
+ }
+
+ sdp += writeMediaSection(transceiver, commonCapabilities,
+ 'answer', transceiver.stream, pc._dtlsRole);
+ if (transceiver.rtcpParameters &&
+ transceiver.rtcpParameters.reducedSize) {
+ sdp += 'a=rtcp-rsize\r\n';
+ }
+ });
+
+ var desc = new window.RTCSessionDescription({
+ type: 'answer',
+ sdp: sdp
+ });
+ return Promise.resolve(desc);
+ };
+
+ RTCPeerConnection.prototype.addIceCandidate = function(candidate) {
+ var pc = this;
+ var sections;
+ if (candidate && !(candidate.sdpMLineIndex !== undefined ||
+ candidate.sdpMid)) {
+ return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));
+ }
+
+ // TODO: needs to go into ops queue.
+ return new Promise(function(resolve, reject) {
+ if (!pc._remoteDescription) {
+ return reject(makeError('InvalidStateError',
+ 'Can not add ICE candidate without a remote description'));
+ } else if (!candidate || candidate.candidate === '') {
+ for (var j = 0; j < pc.transceivers.length; j++) {
+ if (pc.transceivers[j].rejected) {
+ continue;
+ }
+ pc.transceivers[j].iceTransport.addRemoteCandidate({});
+ sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
+ sections[j] += 'a=end-of-candidates\r\n';
+ pc._remoteDescription.sdp =
+ SDPUtils.getDescription(pc._remoteDescription.sdp) +
+ sections.join('');
+ if (pc.usingBundle) {
+ break;
+ }
+ }
+ } else {
+ var sdpMLineIndex = candidate.sdpMLineIndex;
+ if (candidate.sdpMid) {
+ for (var i = 0; i < pc.transceivers.length; i++) {
+ if (pc.transceivers[i].mid === candidate.sdpMid) {
+ sdpMLineIndex = i;
+ break;
+ }
+ }
+ }
+ var transceiver = pc.transceivers[sdpMLineIndex];
+ if (transceiver) {
+ if (transceiver.rejected) {
+ return resolve();
+ }
+ var cand = Object.keys(candidate.candidate).length > 0 ?
+ SDPUtils.parseCandidate(candidate.candidate) : {};
+ // Ignore Chrome's invalid candidates since Edge does not like them.
+ if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {
+ return resolve();
+ }
+ // Ignore RTCP candidates, we assume RTCP-MUX.
+ if (cand.component && cand.component !== 1) {
+ return resolve();
+ }
+ // when using bundle, avoid adding candidates to the wrong
+ // ice transport. And avoid adding candidates added in the SDP.
+ if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&
+ transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {
+ if (!maybeAddCandidate(transceiver.iceTransport, cand)) {
+ return reject(makeError('OperationError',
+ 'Can not add ICE candidate'));
+ }
+ }
+
+ // update the remoteDescription.
+ var candidateString = candidate.candidate.trim();
+ if (candidateString.indexOf('a=') === 0) {
+ candidateString = candidateString.substr(2);
+ }
+ sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
+ sections[sdpMLineIndex] += 'a=' +
+ (cand.type ? candidateString : 'end-of-candidates')
+ + '\r\n';
+ pc._remoteDescription.sdp =
+ SDPUtils.getDescription(pc._remoteDescription.sdp) +
+ sections.join('');
+ } else {
+ return reject(makeError('OperationError',
+ 'Can not add ICE candidate'));
+ }
+ }
+ resolve();
+ });
+ };
+
+ RTCPeerConnection.prototype.getStats = function(selector) {
+ if (selector && selector instanceof window.MediaStreamTrack) {
+ var senderOrReceiver = null;
+ this.transceivers.forEach(function(transceiver) {
+ if (transceiver.rtpSender &&
+ transceiver.rtpSender.track === selector) {
+ senderOrReceiver = transceiver.rtpSender;
+ } else if (transceiver.rtpReceiver &&
+ transceiver.rtpReceiver.track === selector) {
+ senderOrReceiver = transceiver.rtpReceiver;
}
});
- }
- return nativeMethod.apply(this, arguments);
- };
- });
-
- return RTCPeerConnection;
-};
-
-},{"sdp":2}],2:[function(require,module,exports){
-/* eslint-env node */
-'use strict';
-
-// SDP helpers.
-var SDPUtils = {};
-
-// Generate an alphanumeric identifier for cname or mids.
-// TODO: use UUIDs instead? https://gist.github.com/jed/982883
-SDPUtils.generateIdentifier = function() {
- return Math.random().toString(36).substr(2, 10);
-};
-
-// The RTCP CNAME used by all peerconnections from the same JS.
-SDPUtils.localCName = SDPUtils.generateIdentifier();
-
-// Splits SDP into lines, dealing with both CRLF and LF.
-SDPUtils.splitLines = function(blob) {
- return blob.trim().split('\n').map(function(line) {
- return line.trim();
- });
-};
-// Splits SDP into sessionpart and mediasections. Ensures CRLF.
-SDPUtils.splitSections = function(blob) {
- var parts = blob.split('\nm=');
- return parts.map(function(part, index) {
- return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
- });
-};
-
-// returns the session description.
-SDPUtils.getDescription = function(blob) {
- var sections = SDPUtils.splitSections(blob);
- return sections && sections[0];
-};
-
-// returns the individual media sections.
-SDPUtils.getMediaSections = function(blob) {
- var sections = SDPUtils.splitSections(blob);
- sections.shift();
- return sections;
-};
-
-// Returns lines that start with a certain prefix.
-SDPUtils.matchPrefix = function(blob, prefix) {
- return SDPUtils.splitLines(blob).filter(function(line) {
- return line.indexOf(prefix) === 0;
- });
-};
-
-// Parses an ICE candidate line. Sample input:
-// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
-// rport 55996"
-SDPUtils.parseCandidate = function(line) {
- var parts;
- // Parse both variants.
- if (line.indexOf('a=candidate:') === 0) {
- parts = line.substring(12).split(' ');
- } else {
- parts = line.substring(10).split(' ');
- }
-
- var candidate = {
- foundation: parts[0],
- component: parseInt(parts[1], 10),
- protocol: parts[2].toLowerCase(),
- priority: parseInt(parts[3], 10),
- ip: parts[4],
- port: parseInt(parts[5], 10),
- // skip parts[6] == 'typ'
- type: parts[7]
- };
-
- for (var i = 8; i < parts.length; i += 2) {
- switch (parts[i]) {
- case 'raddr':
- candidate.relatedAddress = parts[i + 1];
- break;
- case 'rport':
- candidate.relatedPort = parseInt(parts[i + 1], 10);
- break;
- case 'tcptype':
- candidate.tcpType = parts[i + 1];
- break;
- case 'ufrag':
- candidate.ufrag = parts[i + 1]; // for backward compability.
- candidate.usernameFragment = parts[i + 1];
- break;
- default: // extension handling, in particular ufrag
- candidate[parts[i]] = parts[i + 1];
- break;
- }
- }
- return candidate;
-};
-
-// Translates a candidate object into SDP candidate attribute.
-SDPUtils.writeCandidate = function(candidate) {
- var sdp = [];
- sdp.push(candidate.foundation);
- sdp.push(candidate.component);
- sdp.push(candidate.protocol.toUpperCase());
- sdp.push(candidate.priority);
- sdp.push(candidate.ip);
- sdp.push(candidate.port);
-
- var type = candidate.type;
- sdp.push('typ');
- sdp.push(type);
- if (type !== 'host' && candidate.relatedAddress &&
- candidate.relatedPort) {
- sdp.push('raddr');
- sdp.push(candidate.relatedAddress); // was: relAddr
- sdp.push('rport');
- sdp.push(candidate.relatedPort); // was: relPort
- }
- if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
- sdp.push('tcptype');
- sdp.push(candidate.tcpType);
- }
- if (candidate.usernameFragment || candidate.ufrag) {
- sdp.push('ufrag');
- sdp.push(candidate.usernameFragment || candidate.ufrag);
- }
- return 'candidate:' + sdp.join(' ');
-};
-
-// Parses an ice-options line, returns an array of option tags.
-// a=ice-options:foo bar
-SDPUtils.parseIceOptions = function(line) {
- return line.substr(14).split(' ');
-}
-
-// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:
-// a=rtpmap:111 opus/48000/2
-SDPUtils.parseRtpMap = function(line) {
- var parts = line.substr(9).split(' ');
- var parsed = {
- payloadType: parseInt(parts.shift(), 10) // was: id
- };
-
- parts = parts[0].split('/');
-
- parsed.name = parts[0];
- parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
- // was: channels
- parsed.numChannels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
- return parsed;
-};
-
-// Generate an a=rtpmap line from RTCRtpCodecCapability or
-// RTCRtpCodecParameters.
-SDPUtils.writeRtpMap = function(codec) {
- var pt = codec.payloadType;
- if (codec.preferredPayloadType !== undefined) {
- pt = codec.preferredPayloadType;
- }
- return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +
- (codec.numChannels !== 1 ? '/' + codec.numChannels : '') + '\r\n';
-};
-
-// Parses an a=extmap line (headerextension from RFC 5285). Sample input:
-// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
-// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
-SDPUtils.parseExtmap = function(line) {
- var parts = line.substr(9).split(' ');
- return {
- id: parseInt(parts[0], 10),
- direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
- uri: parts[1]
- };
-};
-
-// Generates a=extmap line from RTCRtpHeaderExtensionParameters or
-// RTCRtpHeaderExtension.
-SDPUtils.writeExtmap = function(headerExtension) {
- return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +
- (headerExtension.direction && headerExtension.direction !== 'sendrecv'
- ? '/' + headerExtension.direction
- : '') +
- ' ' + headerExtension.uri + '\r\n';
-};
-
-// Parses an ftmp line, returns dictionary. Sample input:
-// a=fmtp:96 vbr=on;cng=on
-// Also deals with vbr=on; cng=on
-SDPUtils.parseFmtp = function(line) {
- var parsed = {};
- var kv;
- var parts = line.substr(line.indexOf(' ') + 1).split(';');
- for (var j = 0; j < parts.length; j++) {
- kv = parts[j].trim().split('=');
- parsed[kv[0].trim()] = kv[1];
- }
- return parsed;
-};
-
-// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
-SDPUtils.writeFmtp = function(codec) {
- var line = '';
- var pt = codec.payloadType;
- if (codec.preferredPayloadType !== undefined) {
- pt = codec.preferredPayloadType;
- }
- if (codec.parameters && Object.keys(codec.parameters).length) {
- var params = [];
- Object.keys(codec.parameters).forEach(function(param) {
- params.push(param + '=' + codec.parameters[param]);
- });
- line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
- }
- return line;
-};
-
-// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
-// a=rtcp-fb:98 nack rpsi
-SDPUtils.parseRtcpFb = function(line) {
- var parts = line.substr(line.indexOf(' ') + 1).split(' ');
- return {
- type: parts.shift(),
- parameter: parts.join(' ')
- };
-};
-// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
-SDPUtils.writeRtcpFb = function(codec) {
- var lines = '';
- var pt = codec.payloadType;
- if (codec.preferredPayloadType !== undefined) {
- pt = codec.preferredPayloadType;
- }
- if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
- // FIXME: special handling for trr-int?
- codec.rtcpFeedback.forEach(function(fb) {
- lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +
- (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +
- '\r\n';
- });
- }
- return lines;
-};
-
-// Parses an RFC 5576 ssrc media attribute. Sample input:
-// a=ssrc:3735928559 cname:something
-SDPUtils.parseSsrcMedia = function(line) {
- var sp = line.indexOf(' ');
- var parts = {
- ssrc: parseInt(line.substr(7, sp - 7), 10)
- };
- var colon = line.indexOf(':', sp);
- if (colon > -1) {
- parts.attribute = line.substr(sp + 1, colon - sp - 1);
- parts.value = line.substr(colon + 1);
- } else {
- parts.attribute = line.substr(sp + 1);
- }
- return parts;
-};
-
-// Extracts the MID (RFC 5888) from a media section.
-// returns the MID or undefined if no mid line was found.
-SDPUtils.getMid = function(mediaSection) {
- var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
- if (mid) {
- return mid.substr(6);
- }
-}
-
-SDPUtils.parseFingerprint = function(line) {
- var parts = line.substr(14).split(' ');
- return {
- algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
- value: parts[1]
- };
-};
-
-// Extracts DTLS parameters from SDP media section or sessionpart.
-// FIXME: for consistency with other functions this should only
-// get the fingerprint line as input. See also getIceParameters.
-SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {
- var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
- 'a=fingerprint:');
- // Note: a=setup line is ignored since we use the 'auto' role.
- // Note2: 'algorithm' is not case sensitive except in Edge.
- return {
- role: 'auto',
- fingerprints: lines.map(SDPUtils.parseFingerprint)
- };
-};
-
-// Serializes DTLS parameters to SDP.
-SDPUtils.writeDtlsParameters = function(params, setupType) {
- var sdp = 'a=setup:' + setupType + '\r\n';
- params.fingerprints.forEach(function(fp) {
- sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
- });
- return sdp;
-};
-// Parses ICE information from SDP media section or sessionpart.
-// FIXME: for consistency with other functions this should only
-// get the ice-ufrag and ice-pwd lines as input.
-SDPUtils.getIceParameters = function(mediaSection, sessionpart) {
- var lines = SDPUtils.splitLines(mediaSection);
- // Search in session part, too.
- lines = lines.concat(SDPUtils.splitLines(sessionpart));
- var iceParameters = {
- usernameFragment: lines.filter(function(line) {
- return line.indexOf('a=ice-ufrag:') === 0;
- })[0].substr(12),
- password: lines.filter(function(line) {
- return line.indexOf('a=ice-pwd:') === 0;
- })[0].substr(10)
- };
- return iceParameters;
-};
-
-// Serializes ICE parameters to SDP.
-SDPUtils.writeIceParameters = function(params) {
- return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' +
- 'a=ice-pwd:' + params.password + '\r\n';
-};
-
-// Parses the SDP media section and returns RTCRtpParameters.
-SDPUtils.parseRtpParameters = function(mediaSection) {
- var description = {
- codecs: [],
- headerExtensions: [],
- fecMechanisms: [],
- rtcp: []
- };
- var lines = SDPUtils.splitLines(mediaSection);
- var mline = lines[0].split(' ');
- for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]
- var pt = mline[i];
- var rtpmapline = SDPUtils.matchPrefix(
- mediaSection, 'a=rtpmap:' + pt + ' ')[0];
- if (rtpmapline) {
- var codec = SDPUtils.parseRtpMap(rtpmapline);
- var fmtps = SDPUtils.matchPrefix(
- mediaSection, 'a=fmtp:' + pt + ' ');
- // Only the first a=fmtp:<pt> is considered.
- codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
- codec.rtcpFeedback = SDPUtils.matchPrefix(
- mediaSection, 'a=rtcp-fb:' + pt + ' ')
- .map(SDPUtils.parseRtcpFb);
- description.codecs.push(codec);
- // parse FEC mechanisms from rtpmap lines.
- switch (codec.name.toUpperCase()) {
- case 'RED':
- case 'ULPFEC':
- description.fecMechanisms.push(codec.name.toUpperCase());
- break;
- default: // only RED and ULPFEC are recognized as FEC mechanisms.
- break;
- }
- }
- }
- SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {
- description.headerExtensions.push(SDPUtils.parseExtmap(line));
- });
- // FIXME: parse rtcp.
- return description;
-};
-
-// Generates parts of the SDP media section describing the capabilities /
-// parameters.
-SDPUtils.writeRtpDescription = function(kind, caps) {
- var sdp = '';
-
- // Build the mline.
- sdp += 'm=' + kind + ' ';
- sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
- sdp += ' UDP/TLS/RTP/SAVPF ';
- sdp += caps.codecs.map(function(codec) {
- if (codec.preferredPayloadType !== undefined) {
- return codec.preferredPayloadType;
- }
- return codec.payloadType;
- }).join(' ') + '\r\n';
-
- sdp += 'c=IN IP4 0.0.0.0\r\n';
- sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';
-
- // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
- caps.codecs.forEach(function(codec) {
- sdp += SDPUtils.writeRtpMap(codec);
- sdp += SDPUtils.writeFmtp(codec);
- sdp += SDPUtils.writeRtcpFb(codec);
- });
- var maxptime = 0;
- caps.codecs.forEach(function(codec) {
- if (codec.maxptime > maxptime) {
- maxptime = codec.maxptime;
- }
- });
- if (maxptime > 0) {
- sdp += 'a=maxptime:' + maxptime + '\r\n';
- }
- sdp += 'a=rtcp-mux\r\n';
-
- caps.headerExtensions.forEach(function(extension) {
- sdp += SDPUtils.writeExtmap(extension);
- });
- // FIXME: write fecMechanisms.
- return sdp;
-};
-
-// Parses the SDP media section and returns an array of
-// RTCRtpEncodingParameters.
-SDPUtils.parseRtpEncodingParameters = function(mediaSection) {
- var encodingParameters = [];
- var description = SDPUtils.parseRtpParameters(mediaSection);
- var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
- var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;
-
- // filter a=ssrc:... cname:, ignore PlanB-msid
- var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
- .map(function(line) {
- return SDPUtils.parseSsrcMedia(line);
- })
- .filter(function(parts) {
- return parts.attribute === 'cname';
- });
- var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
- var secondarySsrc;
-
- var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')
- .map(function(line) {
- var parts = line.split(' ');
- parts.shift();
- return parts.map(function(part) {
- return parseInt(part, 10);
- });
- });
- if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
- secondarySsrc = flows[0][1];
- }
-
- description.codecs.forEach(function(codec) {
- if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
- var encParam = {
- ssrc: primarySsrc,
- codecPayloadType: parseInt(codec.parameters.apt, 10),
- rtx: {
- ssrc: secondarySsrc
+ if (!senderOrReceiver) {
+ throw makeError('InvalidAccessError', 'Invalid selector.');
+ }
+ return senderOrReceiver.getStats();
}
+
+ var promises = [];
+ this.transceivers.forEach(function(transceiver) {
+ ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',
+ 'dtlsTransport'].forEach(function(method) {
+ if (transceiver[method]) {
+ promises.push(transceiver[method].getStats());
+ }
+ });
+ });
+ return Promise.all(promises).then(function(allStats) {
+ var results = new Map();
+ allStats.forEach(function(stats) {
+ stats.forEach(function(stat) {
+ results.set(stat.id, stat);
+ });
+ });
+ return results;
+ });
};
- encodingParameters.push(encParam);
- if (hasRed) {
- encParam = JSON.parse(JSON.stringify(encParam));
- encParam.fec = {
- ssrc: secondarySsrc,
- mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
+
+ // fix low-level stat names and return Map instead of object.
+ var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer',
+ 'RTCIceTransport', 'RTCDtlsTransport'];
+ ortcObjects.forEach(function(ortcObjectName) {
+ var obj = window[ortcObjectName];
+ if (obj && obj.prototype && obj.prototype.getStats) {
+ var nativeGetstats = obj.prototype.getStats;
+ obj.prototype.getStats = function() {
+ return nativeGetstats.apply(this)
+ .then(function(nativeStats) {
+ var mapStats = new Map();
+ Object.keys(nativeStats).forEach(function(id) {
+ nativeStats[id].type = fixStatsType(nativeStats[id]);
+ mapStats.set(id, nativeStats[id]);
+ });
+ return mapStats;
+ });
+ };
+ }
+ });
+
+ // legacy callback shims. Should be moved to adapter.js some days.
+ var methods = ['createOffer', 'createAnswer'];
+ methods.forEach(function(method) {
+ var nativeMethod = RTCPeerConnection.prototype[method];
+ RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ if (typeof args[0] === 'function' ||
+ typeof args[1] === 'function') { // legacy
+ return nativeMethod.apply(this, [arguments[2]])
+ .then(function(description) {
+ if (typeof args[0] === 'function') {
+ args[0].apply(null, [description]);
+ }
+ }, function(error) {
+ if (typeof args[1] === 'function') {
+ args[1].apply(null, [error]);
+ }
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];
+ methods.forEach(function(method) {
+ var nativeMethod = RTCPeerConnection.prototype[method];
+ RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ if (typeof args[1] === 'function' ||
+ typeof args[2] === 'function') { // legacy
+ return nativeMethod.apply(this, arguments)
+ .then(function() {
+ if (typeof args[1] === 'function') {
+ args[1].apply(null);
+ }
+ }, function(error) {
+ if (typeof args[2] === 'function') {
+ args[2].apply(null, [error]);
+ }
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ // getStats is special. It doesn't have a spec legacy method yet we support
+ // getStats(something, cb) without error callbacks.
+ ['getStats'].forEach(function(method) {
+ var nativeMethod = RTCPeerConnection.prototype[method];
+ RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ if (typeof args[1] === 'function') {
+ return nativeMethod.apply(this, arguments)
+ .then(function() {
+ if (typeof args[1] === 'function') {
+ args[1].apply(null);
+ }
+ });
+ }
+ return nativeMethod.apply(this, arguments);
};
- encodingParameters.push(encParam);
+ });
+
+ return RTCPeerConnection;
+ };
+
+ },{"sdp":2}],2:[function(require,module,exports){
+ /* eslint-env node */
+ 'use strict';
+
+ // SDP helpers.
+ var SDPUtils = {};
+
+ // Generate an alphanumeric identifier for cname or mids.
+ // TODO: use UUIDs instead? https://gist.github.com/jed/982883
+ SDPUtils.generateIdentifier = function() {
+ return Math.random().toString(36).substr(2, 10);
+ };
+
+ // The RTCP CNAME used by all peerconnections from the same JS.
+ SDPUtils.localCName = SDPUtils.generateIdentifier();
+
+ // Splits SDP into lines, dealing with both CRLF and LF.
+ SDPUtils.splitLines = function(blob) {
+ return blob.trim().split('\n').map(function(line) {
+ return line.trim();
+ });
+ };
+ // Splits SDP into sessionpart and mediasections. Ensures CRLF.
+ SDPUtils.splitSections = function(blob) {
+ var parts = blob.split('\nm=');
+ return parts.map(function(part, index) {
+ return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
+ });
+ };
+
+ // returns the session description.
+ SDPUtils.getDescription = function(blob) {
+ var sections = SDPUtils.splitSections(blob);
+ return sections && sections[0];
+ };
+
+ // returns the individual media sections.
+ SDPUtils.getMediaSections = function(blob) {
+ var sections = SDPUtils.splitSections(blob);
+ sections.shift();
+ return sections;
+ };
+
+ // Returns lines that start with a certain prefix.
+ SDPUtils.matchPrefix = function(blob, prefix) {
+ return SDPUtils.splitLines(blob).filter(function(line) {
+ return line.indexOf(prefix) === 0;
+ });
+ };
+
+ // Parses an ICE candidate line. Sample input:
+ // candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
+ // rport 55996"
+ SDPUtils.parseCandidate = function(line) {
+ var parts;
+ // Parse both variants.
+ if (line.indexOf('a=candidate:') === 0) {
+ parts = line.substring(12).split(' ');
+ } else {
+ parts = line.substring(10).split(' ');
}
- }
- });
- if (encodingParameters.length === 0 && primarySsrc) {
- encodingParameters.push({
- ssrc: primarySsrc
- });
- }
-
- // we support both b=AS and b=TIAS but interpret AS as TIAS.
- var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
- if (bandwidth.length) {
- if (bandwidth[0].indexOf('b=TIAS:') === 0) {
- bandwidth = parseInt(bandwidth[0].substr(7), 10);
- } else if (bandwidth[0].indexOf('b=AS:') === 0) {
- // use formula from JSEP to convert b=AS to TIAS value.
- bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95
- - (50 * 40 * 8);
- } else {
- bandwidth = undefined;
- }
- encodingParameters.forEach(function(params) {
- params.maxBitrate = bandwidth;
- });
- }
- return encodingParameters;
-};
-
-// parses http://draft.ortc.org/#rtcrtcpparameters*
-SDPUtils.parseRtcpParameters = function(mediaSection) {
- var rtcpParameters = {};
-
- var cname;
- // Gets the first SSRC. Note that with RTX there might be multiple
- // SSRCs.
- var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
- .map(function(line) {
- return SDPUtils.parseSsrcMedia(line);
- })
- .filter(function(obj) {
- return obj.attribute === 'cname';
- })[0];
- if (remoteSsrc) {
- rtcpParameters.cname = remoteSsrc.value;
- rtcpParameters.ssrc = remoteSsrc.ssrc;
- }
-
- // Edge uses the compound attribute instead of reducedSize
- // compound is !reducedSize
- var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
- rtcpParameters.reducedSize = rsize.length > 0;
- rtcpParameters.compound = rsize.length === 0;
-
- // parses the rtcp-mux attrÑ–bute.
- // Note that Edge does not support unmuxed RTCP.
- var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
- rtcpParameters.mux = mux.length > 0;
-
- return rtcpParameters;
-};
-
-// parses either a=msid: or a=ssrc:... msid lines and returns
-// the id of the MediaStream and MediaStreamTrack.
-SDPUtils.parseMsid = function(mediaSection) {
- var parts;
- var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
- if (spec.length === 1) {
- parts = spec[0].substr(7).split(' ');
- return {stream: parts[0], track: parts[1]};
- }
- var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
- .map(function(line) {
- return SDPUtils.parseSsrcMedia(line);
- })
- .filter(function(parts) {
- return parts.attribute === 'msid';
- });
- if (planB.length > 0) {
- parts = planB[0].value.split(' ');
- return {stream: parts[0], track: parts[1]};
- }
-};
-
-// Generate a session ID for SDP.
-// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
-// recommends using a cryptographically random +ve 64-bit value
-// but right now this should be acceptable and within the right range
-SDPUtils.generateSessionId = function() {
- return Math.random().toString().substr(2, 21);
-};
-
-// Write boilder plate for start of SDP
-// sessId argument is optional - if not supplied it will
-// be generated randomly
-// sessVersion is optional and defaults to 2
-SDPUtils.writeSessionBoilerplate = function(sessId, sessVer) {
- var sessionId;
- var version = sessVer !== undefined ? sessVer : 2;
- if (sessId) {
- sessionId = sessId;
- } else {
- sessionId = SDPUtils.generateSessionId();
- }
- // FIXME: sess-id should be an NTP timestamp.
- return 'v=0\r\n' +
- 'o=thisisadapterortc ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\r\n' +
- 's=-\r\n' +
- 't=0 0\r\n';
-};
-
-SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {
- var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
-
- // Map ICE parameters (ufrag, pwd) to SDP.
- sdp += SDPUtils.writeIceParameters(
- transceiver.iceGatherer.getLocalParameters());
-
- // Map DTLS parameters to SDP.
- sdp += SDPUtils.writeDtlsParameters(
- transceiver.dtlsTransport.getLocalParameters(),
- type === 'offer' ? 'actpass' : 'active');
-
- sdp += 'a=mid:' + transceiver.mid + '\r\n';
-
- if (transceiver.direction) {
- sdp += 'a=' + transceiver.direction + '\r\n';
- } else if (transceiver.rtpSender && transceiver.rtpReceiver) {
- sdp += 'a=sendrecv\r\n';
- } else if (transceiver.rtpSender) {
- sdp += 'a=sendonly\r\n';
- } else if (transceiver.rtpReceiver) {
- sdp += 'a=recvonly\r\n';
- } else {
- sdp += 'a=inactive\r\n';
- }
-
- if (transceiver.rtpSender) {
- // spec.
- var msid = 'msid:' + stream.id + ' ' +
- transceiver.rtpSender.track.id + '\r\n';
- sdp += 'a=' + msid;
-
- // for Chrome.
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
- ' ' + msid;
- if (transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
- ' ' + msid;
- sdp += 'a=ssrc-group:FID ' +
- transceiver.sendEncodingParameters[0].ssrc + ' ' +
- transceiver.sendEncodingParameters[0].rtx.ssrc +
- '\r\n';
- }
- }
- // FIXME: this should be written by writeRtpDescription.
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
- ' cname:' + SDPUtils.localCName + '\r\n';
- if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
- ' cname:' + SDPUtils.localCName + '\r\n';
- }
- return sdp;
-};
-
-// Gets the direction from the mediaSection or the sessionpart.
-SDPUtils.getDirection = function(mediaSection, sessionpart) {
- // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
- var lines = SDPUtils.splitLines(mediaSection);
- for (var i = 0; i < lines.length; i++) {
- switch (lines[i]) {
- case 'a=sendrecv':
- case 'a=sendonly':
- case 'a=recvonly':
- case 'a=inactive':
- return lines[i].substr(2);
- default:
- // FIXME: What should happen here?
- }
- }
- if (sessionpart) {
- return SDPUtils.getDirection(sessionpart);
- }
- return 'sendrecv';
-};
-
-SDPUtils.getKind = function(mediaSection) {
- var lines = SDPUtils.splitLines(mediaSection);
- var mline = lines[0].split(' ');
- return mline[0].substr(2);
-};
-
-SDPUtils.isRejected = function(mediaSection) {
- return mediaSection.split(' ', 2)[1] === '0';
-};
-
-SDPUtils.parseMLine = function(mediaSection) {
- var lines = SDPUtils.splitLines(mediaSection);
- var parts = lines[0].substr(2).split(' ');
- return {
- kind: parts[0],
- port: parseInt(parts[1], 10),
- protocol: parts[2],
- fmt: parts.slice(3).join(' ')
- };
-};
-
-SDPUtils.parseOLine = function(mediaSection) {
- var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
- var parts = line.substr(2).split(' ');
- return {
- username: parts[0],
- sessionId: parts[1],
- sessionVersion: parseInt(parts[2], 10),
- netType: parts[3],
- addressType: parts[4],
- address: parts[5],
- };
-}
-
-// Expose public methods.
-if (typeof module === 'object') {
- module.exports = SDPUtils;
-}
-
-},{}],3:[function(require,module,exports){
-(function (global){
- /*
-* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
-*
-* Use of this source code is governed by a BSD-style license
-* that can be found in the LICENSE file in the root of the source
-* tree.
-*/
- /* eslint-env node */
-
- 'use strict';
-
- var adapterFactory = require('./adapter_factory.js');
- module.exports = adapterFactory({window: global.window});
-
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./adapter_factory.js":4}],4:[function(require,module,exports){
-/*
-* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
-*
-* Use of this source code is governed by a BSD-style license
-* that can be found in the LICENSE file in the root of the source
-* tree.
-*/
-/* eslint-env node */
-
-'use strict';
-
-var utils = require('./utils');
-// Shimming starts here.
-module.exports = function(dependencies, opts) {
- var window = dependencies && dependencies.window;
-
- var options = {
- shimChrome: true,
- shimFirefox: true,
- shimEdge: true,
- shimSafari: true,
- };
-
- for (var key in opts) {
- if (hasOwnProperty.call(opts, key)) {
- options[key] = opts[key];
- }
- }
-
- // Utils.
- var logging = utils.log;
- var browserDetails = utils.detectBrowser(window);
-
- // Uncomment the line below if you want logging to occur, including logging
- // for the switch statement below. Can also be turned on in the browser via
- // adapter.disableLog(false), but then logging from the switch statement below
- // will not appear.
- // require('./utils').disableLog(false);
-
- // Browser shims.
- var chromeShim = require('./chrome/chrome_shim') || null;
- var edgeShim = require('./edge/edge_shim') || null;
- var firefoxShim = require('./firefox/firefox_shim') || null;
- var safariShim = require('./safari/safari_shim') || null;
- var commonShim = require('./common_shim') || null;
-
- // Export to the adapter global object visible in the browser.
- var adapter = {
- browserDetails: browserDetails,
- commonShim: commonShim,
- extractVersion: utils.extractVersion,
- disableLog: utils.disableLog,
- disableWarnings: utils.disableWarnings
- };
-
- // Shim browser if found.
- switch (browserDetails.browser) {
- case 'chrome':
- if (!chromeShim || !chromeShim.shimPeerConnection ||
- !options.shimChrome) {
- logging('Chrome shim is not included in this adapter release.');
- return adapter;
+
+ var candidate = {
+ foundation: parts[0],
+ component: parseInt(parts[1], 10),
+ protocol: parts[2].toLowerCase(),
+ priority: parseInt(parts[3], 10),
+ ip: parts[4],
+ address: parts[4], // address is an alias for ip.
+ port: parseInt(parts[5], 10),
+ // skip parts[6] == 'typ'
+ type: parts[7]
+ };
+
+ for (var i = 8; i < parts.length; i += 2) {
+ switch (parts[i]) {
+ case 'raddr':
+ candidate.relatedAddress = parts[i + 1];
+ break;
+ case 'rport':
+ candidate.relatedPort = parseInt(parts[i + 1], 10);
+ break;
+ case 'tcptype':
+ candidate.tcpType = parts[i + 1];
+ break;
+ case 'ufrag':
+ candidate.ufrag = parts[i + 1]; // for backward compability.
+ candidate.usernameFragment = parts[i + 1];
+ break;
+ default: // extension handling, in particular ufrag
+ candidate[parts[i]] = parts[i + 1];
+ break;
+ }
}
- logging('adapter.js shimming chrome.');
- // Export to the adapter global object visible in the browser.
- adapter.browserShim = chromeShim;
- commonShim.shimCreateObjectURL(window);
-
- chromeShim.shimGetUserMedia(window);
- chromeShim.shimMediaStream(window);
- chromeShim.shimSourceObject(window);
- chromeShim.shimPeerConnection(window);
- chromeShim.shimOnTrack(window);
- chromeShim.shimAddTrackRemoveTrack(window);
- chromeShim.shimGetSendersWithDtmf(window);
-
- commonShim.shimRTCIceCandidate(window);
- commonShim.shimMaxMessageSize(window);
- commonShim.shimSendThrowTypeError(window);
- break;
- case 'firefox':
- if (!firefoxShim || !firefoxShim.shimPeerConnection ||
- !options.shimFirefox) {
- logging('Firefox shim is not included in this adapter release.');
- return adapter;
+ return candidate;
+ };
+
+ // Translates a candidate object into SDP candidate attribute.
+ SDPUtils.writeCandidate = function(candidate) {
+ var sdp = [];
+ sdp.push(candidate.foundation);
+ sdp.push(candidate.component);
+ sdp.push(candidate.protocol.toUpperCase());
+ sdp.push(candidate.priority);
+ sdp.push(candidate.address || candidate.ip);
+ sdp.push(candidate.port);
+
+ var type = candidate.type;
+ sdp.push('typ');
+ sdp.push(type);
+ if (type !== 'host' && candidate.relatedAddress &&
+ candidate.relatedPort) {
+ sdp.push('raddr');
+ sdp.push(candidate.relatedAddress);
+ sdp.push('rport');
+ sdp.push(candidate.relatedPort);
}
- logging('adapter.js shimming firefox.');
- // Export to the adapter global object visible in the browser.
- adapter.browserShim = firefoxShim;
- commonShim.shimCreateObjectURL(window);
-
- firefoxShim.shimGetUserMedia(window);
- firefoxShim.shimSourceObject(window);
- firefoxShim.shimPeerConnection(window);
- firefoxShim.shimOnTrack(window);
- firefoxShim.shimRemoveStream(window);
-
- commonShim.shimRTCIceCandidate(window);
- commonShim.shimMaxMessageSize(window);
- commonShim.shimSendThrowTypeError(window);
- break;
- case 'edge':
- if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {
- logging('MS edge shim is not included in this adapter release.');
- return adapter;
+ if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
+ sdp.push('tcptype');
+ sdp.push(candidate.tcpType);
}
- logging('adapter.js shimming edge.');
- // Export to the adapter global object visible in the browser.
- adapter.browserShim = edgeShim;
- commonShim.shimCreateObjectURL(window);
-
- edgeShim.shimGetUserMedia(window);
- edgeShim.shimPeerConnection(window);
- edgeShim.shimReplaceTrack(window);
-
- // the edge shim implements the full RTCIceCandidate object.
-
- commonShim.shimMaxMessageSize(window);
- commonShim.shimSendThrowTypeError(window);
- break;
- case 'safari':
- if (!safariShim || !options.shimSafari) {
- logging('Safari shim is not included in this adapter release.');
- return adapter;
+ if (candidate.usernameFragment || candidate.ufrag) {
+ sdp.push('ufrag');
+ sdp.push(candidate.usernameFragment || candidate.ufrag);
}
- logging('adapter.js shimming safari.');
- // Export to the adapter global object visible in the browser.
- adapter.browserShim = safariShim;
- commonShim.shimCreateObjectURL(window);
-
- safariShim.shimRTCIceServerUrls(window);
- safariShim.shimCallbacksAPI(window);
- safariShim.shimLocalStreamsAPI(window);
- safariShim.shimRemoteStreamsAPI(window);
- safariShim.shimTrackEventTransceiver(window);
- safariShim.shimGetUserMedia(window);
- safariShim.shimCreateOfferLegacy(window);
-
- commonShim.shimRTCIceCandidate(window);
- commonShim.shimMaxMessageSize(window);
- commonShim.shimSendThrowTypeError(window);
- break;
- default:
- logging('Unsupported browser!');
- break;
- }
-
- return adapter;
-};
-
-},{"./chrome/chrome_shim":5,"./common_shim":7,"./edge/edge_shim":8,"./firefox/firefox_shim":10,"./safari/safari_shim":12,"./utils":13}],5:[function(require,module,exports){
-
-/*
-* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
-*
-* Use of this source code is governed by a BSD-style license
-* that can be found in the LICENSE file in the root of the source
-* tree.
-*/
-/* eslint-env node */
-'use strict';
-var utils = require('../utils.js');
-var logging = utils.log;
-
-module.exports = {
- shimGetUserMedia: require('./getusermedia'),
- shimMediaStream: function(window) {
- window.MediaStream = window.MediaStream || window.webkitMediaStream;
- },
-
- shimOnTrack: function(window) {
- if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in
- window.RTCPeerConnection.prototype)) {
- Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
- get: function() {
- return this._ontrack;
- },
- set: function(f) {
- if (this._ontrack) {
- this.removeEventListener('track', this._ontrack);
+ return 'candidate:' + sdp.join(' ');
+ };
+
+ // Parses an ice-options line, returns an array of option tags.
+ // a=ice-options:foo bar
+ SDPUtils.parseIceOptions = function(line) {
+ return line.substr(14).split(' ');
+ };
+
+ // Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:
+ // a=rtpmap:111 opus/48000/2
+ SDPUtils.parseRtpMap = function(line) {
+ var parts = line.substr(9).split(' ');
+ var parsed = {
+ payloadType: parseInt(parts.shift(), 10) // was: id
+ };
+
+ parts = parts[0].split('/');
+
+ parsed.name = parts[0];
+ parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
+ parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
+ // legacy alias, got renamed back to channels in ORTC.
+ parsed.numChannels = parsed.channels;
+ return parsed;
+ };
+
+ // Generate an a=rtpmap line from RTCRtpCodecCapability or
+ // RTCRtpCodecParameters.
+ SDPUtils.writeRtpMap = function(codec) {
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ var channels = codec.channels || codec.numChannels || 1;
+ return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +
+ (channels !== 1 ? '/' + channels : '') + '\r\n';
+ };
+
+ // Parses an a=extmap line (headerextension from RFC 5285). Sample input:
+ // a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
+ // a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
+ SDPUtils.parseExtmap = function(line) {
+ var parts = line.substr(9).split(' ');
+ return {
+ id: parseInt(parts[0], 10),
+ direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
+ uri: parts[1]
+ };
+ };
+
+ // Generates a=extmap line from RTCRtpHeaderExtensionParameters or
+ // RTCRtpHeaderExtension.
+ SDPUtils.writeExtmap = function(headerExtension) {
+ return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +
+ (headerExtension.direction && headerExtension.direction !== 'sendrecv'
+ ? '/' + headerExtension.direction
+ : '') +
+ ' ' + headerExtension.uri + '\r\n';
+ };
+
+ // Parses an ftmp line, returns dictionary. Sample input:
+ // a=fmtp:96 vbr=on;cng=on
+ // Also deals with vbr=on; cng=on
+ SDPUtils.parseFmtp = function(line) {
+ var parsed = {};
+ var kv;
+ var parts = line.substr(line.indexOf(' ') + 1).split(';');
+ for (var j = 0; j < parts.length; j++) {
+ kv = parts[j].trim().split('=');
+ parsed[kv[0].trim()] = kv[1];
+ }
+ return parsed;
+ };
+
+ // Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
+ SDPUtils.writeFmtp = function(codec) {
+ var line = '';
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ if (codec.parameters && Object.keys(codec.parameters).length) {
+ var params = [];
+ Object.keys(codec.parameters).forEach(function(param) {
+ if (codec.parameters[param]) {
+ params.push(param + '=' + codec.parameters[param]);
+ } else {
+ params.push(param);
}
- this.addEventListener('track', this._ontrack = f);
- }
+ });
+ line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
+ }
+ return line;
+ };
+
+ // Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
+ // a=rtcp-fb:98 nack rpsi
+ SDPUtils.parseRtcpFb = function(line) {
+ var parts = line.substr(line.indexOf(' ') + 1).split(' ');
+ return {
+ type: parts.shift(),
+ parameter: parts.join(' ')
+ };
+ };
+ // Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
+ SDPUtils.writeRtcpFb = function(codec) {
+ var lines = '';
+ var pt = codec.payloadType;
+ if (codec.preferredPayloadType !== undefined) {
+ pt = codec.preferredPayloadType;
+ }
+ if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
+ // FIXME: special handling for trr-int?
+ codec.rtcpFeedback.forEach(function(fb) {
+ lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +
+ (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +
+ '\r\n';
+ });
+ }
+ return lines;
+ };
+
+ // Parses an RFC 5576 ssrc media attribute. Sample input:
+ // a=ssrc:3735928559 cname:something
+ SDPUtils.parseSsrcMedia = function(line) {
+ var sp = line.indexOf(' ');
+ var parts = {
+ ssrc: parseInt(line.substr(7, sp - 7), 10)
+ };
+ var colon = line.indexOf(':', sp);
+ if (colon > -1) {
+ parts.attribute = line.substr(sp + 1, colon - sp - 1);
+ parts.value = line.substr(colon + 1);
+ } else {
+ parts.attribute = line.substr(sp + 1);
+ }
+ return parts;
+ };
+
+ SDPUtils.parseSsrcGroup = function(line) {
+ var parts = line.substr(13).split(' ');
+ return {
+ semantics: parts.shift(),
+ ssrcs: parts.map(function(ssrc) {
+ return parseInt(ssrc, 10);
+ })
+ };
+ };
+
+ // Extracts the MID (RFC 5888) from a media section.
+ // returns the MID or undefined if no mid line was found.
+ SDPUtils.getMid = function(mediaSection) {
+ var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
+ if (mid) {
+ return mid.substr(6);
+ }
+ };
+
+ SDPUtils.parseFingerprint = function(line) {
+ var parts = line.substr(14).split(' ');
+ return {
+ algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
+ value: parts[1]
+ };
+ };
+
+ // Extracts DTLS parameters from SDP media section or sessionpart.
+ // FIXME: for consistency with other functions this should only
+ // get the fingerprint line as input. See also getIceParameters.
+ SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {
+ var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
+ 'a=fingerprint:');
+ // Note: a=setup line is ignored since we use the 'auto' role.
+ // Note2: 'algorithm' is not case sensitive except in Edge.
+ return {
+ role: 'auto',
+ fingerprints: lines.map(SDPUtils.parseFingerprint)
+ };
+ };
+
+ // Serializes DTLS parameters to SDP.
+ SDPUtils.writeDtlsParameters = function(params, setupType) {
+ var sdp = 'a=setup:' + setupType + '\r\n';
+ params.fingerprints.forEach(function(fp) {
+ sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
});
- var origSetRemoteDescription =
- window.RTCPeerConnection.prototype.setRemoteDescription;
- window.RTCPeerConnection.prototype.setRemoteDescription = function() {
- var pc = this;
- if (!pc._ontrackpoly) {
- pc._ontrackpoly = function(e) {
- // onaddstream does not fire when a track is added to an existing
- // stream. But stream.onaddtrack is implemented so we use that.
- e.stream.addEventListener('addtrack', function(te) {
- var receiver;
- if (window.RTCPeerConnection.prototype.getReceivers) {
- receiver = pc.getReceivers().find(function(r) {
- return r.track && r.track.id === te.track.id;
- });
- } else {
- receiver = {track: te.track};
- }
+ return sdp;
+ };
+ // Parses ICE information from SDP media section or sessionpart.
+ // FIXME: for consistency with other functions this should only
+ // get the ice-ufrag and ice-pwd lines as input.
+ SDPUtils.getIceParameters = function(mediaSection, sessionpart) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ // Search in session part, too.
+ lines = lines.concat(SDPUtils.splitLines(sessionpart));
+ var iceParameters = {
+ usernameFragment: lines.filter(function(line) {
+ return line.indexOf('a=ice-ufrag:') === 0;
+ })[0].substr(12),
+ password: lines.filter(function(line) {
+ return line.indexOf('a=ice-pwd:') === 0;
+ })[0].substr(10)
+ };
+ return iceParameters;
+ };
- var event = new Event('track');
- event.track = te.track;
- event.receiver = receiver;
- event.transceiver = {receiver: receiver};
- event.streams = [e.stream];
- pc.dispatchEvent(event);
+ // Serializes ICE parameters to SDP.
+ SDPUtils.writeIceParameters = function(params) {
+ return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' +
+ 'a=ice-pwd:' + params.password + '\r\n';
+ };
+
+ // Parses the SDP media section and returns RTCRtpParameters.
+ SDPUtils.parseRtpParameters = function(mediaSection) {
+ var description = {
+ codecs: [],
+ headerExtensions: [],
+ fecMechanisms: [],
+ rtcp: []
+ };
+ var lines = SDPUtils.splitLines(mediaSection);
+ var mline = lines[0].split(' ');
+ for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]
+ var pt = mline[i];
+ var rtpmapline = SDPUtils.matchPrefix(
+ mediaSection, 'a=rtpmap:' + pt + ' ')[0];
+ if (rtpmapline) {
+ var codec = SDPUtils.parseRtpMap(rtpmapline);
+ var fmtps = SDPUtils.matchPrefix(
+ mediaSection, 'a=fmtp:' + pt + ' ');
+ // Only the first a=fmtp:<pt> is considered.
+ codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
+ codec.rtcpFeedback = SDPUtils.matchPrefix(
+ mediaSection, 'a=rtcp-fb:' + pt + ' ')
+ .map(SDPUtils.parseRtcpFb);
+ description.codecs.push(codec);
+ // parse FEC mechanisms from rtpmap lines.
+ switch (codec.name.toUpperCase()) {
+ case 'RED':
+ case 'ULPFEC':
+ description.fecMechanisms.push(codec.name.toUpperCase());
+ break;
+ default: // only RED and ULPFEC are recognized as FEC mechanisms.
+ break;
+ }
+ }
+ }
+ SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {
+ description.headerExtensions.push(SDPUtils.parseExtmap(line));
+ });
+ // FIXME: parse rtcp.
+ return description;
+ };
+
+ // Generates parts of the SDP media section describing the capabilities /
+ // parameters.
+ SDPUtils.writeRtpDescription = function(kind, caps) {
+ var sdp = '';
+
+ // Build the mline.
+ sdp += 'm=' + kind + ' ';
+ sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
+ sdp += ' UDP/TLS/RTP/SAVPF ';
+ sdp += caps.codecs.map(function(codec) {
+ if (codec.preferredPayloadType !== undefined) {
+ return codec.preferredPayloadType;
+ }
+ return codec.payloadType;
+ }).join(' ') + '\r\n';
+
+ sdp += 'c=IN IP4 0.0.0.0\r\n';
+ sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';
+
+ // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
+ caps.codecs.forEach(function(codec) {
+ sdp += SDPUtils.writeRtpMap(codec);
+ sdp += SDPUtils.writeFmtp(codec);
+ sdp += SDPUtils.writeRtcpFb(codec);
+ });
+ var maxptime = 0;
+ caps.codecs.forEach(function(codec) {
+ if (codec.maxptime > maxptime) {
+ maxptime = codec.maxptime;
+ }
+ });
+ if (maxptime > 0) {
+ sdp += 'a=maxptime:' + maxptime + '\r\n';
+ }
+ sdp += 'a=rtcp-mux\r\n';
+
+ if (caps.headerExtensions) {
+ caps.headerExtensions.forEach(function(extension) {
+ sdp += SDPUtils.writeExtmap(extension);
+ });
+ }
+ // FIXME: write fecMechanisms.
+ return sdp;
+ };
+
+ // Parses the SDP media section and returns an array of
+ // RTCRtpEncodingParameters.
+ SDPUtils.parseRtpEncodingParameters = function(mediaSection) {
+ var encodingParameters = [];
+ var description = SDPUtils.parseRtpParameters(mediaSection);
+ var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
+ var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;
+
+ // filter a=ssrc:... cname:, ignore PlanB-msid
+ var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
+ .map(function(line) {
+ return SDPUtils.parseSsrcMedia(line);
+ })
+ .filter(function(parts) {
+ return parts.attribute === 'cname';
+ });
+ var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
+ var secondarySsrc;
+
+ var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')
+ .map(function(line) {
+ var parts = line.substr(17).split(' ');
+ return parts.map(function(part) {
+ return parseInt(part, 10);
+ });
+ });
+ if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
+ secondarySsrc = flows[0][1];
+ }
+
+ description.codecs.forEach(function(codec) {
+ if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
+ var encParam = {
+ ssrc: primarySsrc,
+ codecPayloadType: parseInt(codec.parameters.apt, 10)
+ };
+ if (primarySsrc && secondarySsrc) {
+ encParam.rtx = {ssrc: secondarySsrc};
+ }
+ encodingParameters.push(encParam);
+ if (hasRed) {
+ encParam = JSON.parse(JSON.stringify(encParam));
+ encParam.fec = {
+ ssrc: primarySsrc,
+ mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
+ };
+ encodingParameters.push(encParam);
+ }
+ }
+ });
+ if (encodingParameters.length === 0 && primarySsrc) {
+ encodingParameters.push({
+ ssrc: primarySsrc
+ });
+ }
+
+ // we support both b=AS and b=TIAS but interpret AS as TIAS.
+ var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
+ if (bandwidth.length) {
+ if (bandwidth[0].indexOf('b=TIAS:') === 0) {
+ bandwidth = parseInt(bandwidth[0].substr(7), 10);
+ } else if (bandwidth[0].indexOf('b=AS:') === 0) {
+ // use formula from JSEP to convert b=AS to TIAS value.
+ bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95
+ - (50 * 40 * 8);
+ } else {
+ bandwidth = undefined;
+ }
+ encodingParameters.forEach(function(params) {
+ params.maxBitrate = bandwidth;
+ });
+ }
+ return encodingParameters;
+ };
+
+ // parses http://draft.ortc.org/#rtcrtcpparameters*
+ SDPUtils.parseRtcpParameters = function(mediaSection) {
+ var rtcpParameters = {};
+
+ // Gets the first SSRC. Note tha with RTX there might be multiple
+ // SSRCs.
+ var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
+ .map(function(line) {
+ return SDPUtils.parseSsrcMedia(line);
+ })
+ .filter(function(obj) {
+ return obj.attribute === 'cname';
+ })[0];
+ if (remoteSsrc) {
+ rtcpParameters.cname = remoteSsrc.value;
+ rtcpParameters.ssrc = remoteSsrc.ssrc;
+ }
+
+ // Edge uses the compound attribute instead of reducedSize
+ // compound is !reducedSize
+ var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
+ rtcpParameters.reducedSize = rsize.length > 0;
+ rtcpParameters.compound = rsize.length === 0;
+
+ // parses the rtcp-mux attrіbute.
+ // Note that Edge does not support unmuxed RTCP.
+ var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
+ rtcpParameters.mux = mux.length > 0;
+
+ return rtcpParameters;
+ };
+
+ // parses either a=msid: or a=ssrc:... msid lines and returns
+ // the id of the MediaStream and MediaStreamTrack.
+ SDPUtils.parseMsid = function(mediaSection) {
+ var parts;
+ var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
+ if (spec.length === 1) {
+ parts = spec[0].substr(7).split(' ');
+ return {stream: parts[0], track: parts[1]};
+ }
+ var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
+ .map(function(line) {
+ return SDPUtils.parseSsrcMedia(line);
+ })
+ .filter(function(msidParts) {
+ return msidParts.attribute === 'msid';
+ });
+ if (planB.length > 0) {
+ parts = planB[0].value.split(' ');
+ return {stream: parts[0], track: parts[1]};
+ }
+ };
+
+ // Generate a session ID for SDP.
+ // https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
+ // recommends using a cryptographically random +ve 64-bit value
+ // but right now this should be acceptable and within the right range
+ SDPUtils.generateSessionId = function() {
+ return Math.random().toString().substr(2, 21);
+ };
+
+ // Write boilder plate for start of SDP
+ // sessId argument is optional - if not supplied it will
+ // be generated randomly
+ // sessVersion is optional and defaults to 2
+ // sessUser is optional and defaults to 'thisisadapterortc'
+ SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {
+ var sessionId;
+ var version = sessVer !== undefined ? sessVer : 2;
+ if (sessId) {
+ sessionId = sessId;
+ } else {
+ sessionId = SDPUtils.generateSessionId();
+ }
+ var user = sessUser || 'thisisadapterortc';
+ // FIXME: sess-id should be an NTP timestamp.
+ return 'v=0\r\n' +
+ 'o=' + user + ' ' + sessionId + ' ' + version +
+ ' IN IP4 127.0.0.1\r\n' +
+ 's=-\r\n' +
+ 't=0 0\r\n';
+ };
+
+ SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {
+ var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
+
+ // Map ICE parameters (ufrag, pwd) to SDP.
+ sdp += SDPUtils.writeIceParameters(
+ transceiver.iceGatherer.getLocalParameters());
+
+ // Map DTLS parameters to SDP.
+ sdp += SDPUtils.writeDtlsParameters(
+ transceiver.dtlsTransport.getLocalParameters(),
+ type === 'offer' ? 'actpass' : 'active');
+
+ sdp += 'a=mid:' + transceiver.mid + '\r\n';
+
+ if (transceiver.direction) {
+ sdp += 'a=' + transceiver.direction + '\r\n';
+ } else if (transceiver.rtpSender && transceiver.rtpReceiver) {
+ sdp += 'a=sendrecv\r\n';
+ } else if (transceiver.rtpSender) {
+ sdp += 'a=sendonly\r\n';
+ } else if (transceiver.rtpReceiver) {
+ sdp += 'a=recvonly\r\n';
+ } else {
+ sdp += 'a=inactive\r\n';
+ }
+
+ if (transceiver.rtpSender) {
+ // spec.
+ var msid = 'msid:' + stream.id + ' ' +
+ transceiver.rtpSender.track.id + '\r\n';
+ sdp += 'a=' + msid;
+
+ // for Chrome.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' ' + msid;
+ if (transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' ' + msid;
+ sdp += 'a=ssrc-group:FID ' +
+ transceiver.sendEncodingParameters[0].ssrc + ' ' +
+ transceiver.sendEncodingParameters[0].rtx.ssrc +
+ '\r\n';
+ }
+ }
+ // FIXME: this should be written by writeRtpDescription.
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
+ sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
+ ' cname:' + SDPUtils.localCName + '\r\n';
+ }
+ return sdp;
+ };
+
+ // Gets the direction from the mediaSection or the sessionpart.
+ SDPUtils.getDirection = function(mediaSection, sessionpart) {
+ // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
+ var lines = SDPUtils.splitLines(mediaSection);
+ for (var i = 0; i < lines.length; i++) {
+ switch (lines[i]) {
+ case 'a=sendrecv':
+ case 'a=sendonly':
+ case 'a=recvonly':
+ case 'a=inactive':
+ return lines[i].substr(2);
+ default:
+ // FIXME: What should happen here?
+ }
+ }
+ if (sessionpart) {
+ return SDPUtils.getDirection(sessionpart);
+ }
+ return 'sendrecv';
+ };
+
+ SDPUtils.getKind = function(mediaSection) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var mline = lines[0].split(' ');
+ return mline[0].substr(2);
+ };
+
+ SDPUtils.isRejected = function(mediaSection) {
+ return mediaSection.split(' ', 2)[1] === '0';
+ };
+
+ SDPUtils.parseMLine = function(mediaSection) {
+ var lines = SDPUtils.splitLines(mediaSection);
+ var parts = lines[0].substr(2).split(' ');
+ return {
+ kind: parts[0],
+ port: parseInt(parts[1], 10),
+ protocol: parts[2],
+ fmt: parts.slice(3).join(' ')
+ };
+ };
+
+ SDPUtils.parseOLine = function(mediaSection) {
+ var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
+ var parts = line.substr(2).split(' ');
+ return {
+ username: parts[0],
+ sessionId: parts[1],
+ sessionVersion: parseInt(parts[2], 10),
+ netType: parts[3],
+ addressType: parts[4],
+ address: parts[5]
+ };
+ };
+
+ // a very naive interpretation of a valid SDP.
+ SDPUtils.isValidSDP = function(blob) {
+ if (typeof blob !== 'string' || blob.length === 0) {
+ return false;
+ }
+ var lines = SDPUtils.splitLines(blob);
+ for (var i = 0; i < lines.length; i++) {
+ if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {
+ return false;
+ }
+ // TODO: check the modifier a bit more.
+ }
+ return true;
+ };
+
+ // Expose public methods.
+ if (typeof module === 'object') {
+ module.exports = SDPUtils;
+ }
+
+ },{}],3:[function(require,module,exports){
+ (function (global){
+ /*
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree.
+ */
+ /* eslint-env node */
+
+ 'use strict';
+
+ var adapterFactory = require('./adapter_factory.js');
+ module.exports = adapterFactory({window: global.window});
+
+ }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+ },{"./adapter_factory.js":4}],4:[function(require,module,exports){
+ /*
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree.
+ */
+ /* eslint-env node */
+
+ 'use strict';
+
+ var utils = require('./utils');
+ // Shimming starts here.
+ module.exports = function(dependencies, opts) {
+ var window = dependencies && dependencies.window;
+
+ var options = {
+ shimChrome: true,
+ shimFirefox: true,
+ shimEdge: true,
+ shimSafari: true,
+ };
+
+ for (var key in opts) {
+ if (hasOwnProperty.call(opts, key)) {
+ options[key] = opts[key];
+ }
+ }
+
+ // Utils.
+ var logging = utils.log;
+ var browserDetails = utils.detectBrowser(window);
+
+ // Uncomment the line below if you want logging to occur, including logging
+ // for the switch statement below. Can also be turned on in the browser via
+ // adapter.disableLog(false), but then logging from the switch statement below
+ // will not appear.
+ // require('./utils').disableLog(false);
+
+ // Browser shims.
+ var chromeShim = require('./chrome/chrome_shim') || null;
+ var edgeShim = require('./edge/edge_shim') || null;
+ var firefoxShim = require('./firefox/firefox_shim') || null;
+ var safariShim = require('./safari/safari_shim') || null;
+ var commonShim = require('./common_shim') || null;
+
+ // Export to the adapter global object visible in the browser.
+ var adapter = {
+ browserDetails: browserDetails,
+ commonShim: commonShim,
+ extractVersion: utils.extractVersion,
+ disableLog: utils.disableLog,
+ disableWarnings: utils.disableWarnings
+ };
+
+ // Shim browser if found.
+ switch (browserDetails.browser) {
+ case 'chrome':
+ if (!chromeShim || !chromeShim.shimPeerConnection ||
+ !options.shimChrome) {
+ logging('Chrome shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming chrome.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = chromeShim;
+ commonShim.shimCreateObjectURL(window);
+
+ chromeShim.shimGetUserMedia(window);
+ chromeShim.shimMediaStream(window);
+ chromeShim.shimSourceObject(window);
+ chromeShim.shimPeerConnection(window);
+ chromeShim.shimOnTrack(window);
+ chromeShim.shimAddTrackRemoveTrack(window);
+ chromeShim.shimGetSendersWithDtmf(window);
+ chromeShim.shimSenderReceiverGetStats(window);
+ chromeShim.fixNegotiationNeeded(window);
+
+ commonShim.shimRTCIceCandidate(window);
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ case 'firefox':
+ if (!firefoxShim || !firefoxShim.shimPeerConnection ||
+ !options.shimFirefox) {
+ logging('Firefox shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming firefox.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = firefoxShim;
+ commonShim.shimCreateObjectURL(window);
+
+ firefoxShim.shimGetUserMedia(window);
+ firefoxShim.shimSourceObject(window);
+ firefoxShim.shimPeerConnection(window);
+ firefoxShim.shimOnTrack(window);
+ firefoxShim.shimRemoveStream(window);
+ firefoxShim.shimSenderGetStats(window);
+ firefoxShim.shimReceiverGetStats(window);
+ firefoxShim.shimRTCDataChannel(window);
+
+ commonShim.shimRTCIceCandidate(window);
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ case 'edge':
+ if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {
+ logging('MS edge shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming edge.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = edgeShim;
+ commonShim.shimCreateObjectURL(window);
+
+ edgeShim.shimGetUserMedia(window);
+ edgeShim.shimPeerConnection(window);
+ edgeShim.shimReplaceTrack(window);
+
+ // the edge shim implements the full RTCIceCandidate object.
+
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ case 'safari':
+ if (!safariShim || !options.shimSafari) {
+ logging('Safari shim is not included in this adapter release.');
+ return adapter;
+ }
+ logging('adapter.js shimming safari.');
+ // Export to the adapter global object visible in the browser.
+ adapter.browserShim = safariShim;
+ commonShim.shimCreateObjectURL(window);
+
+ safariShim.shimRTCIceServerUrls(window);
+ safariShim.shimCreateOfferLegacy(window);
+ safariShim.shimCallbacksAPI(window);
+ safariShim.shimLocalStreamsAPI(window);
+ safariShim.shimRemoteStreamsAPI(window);
+ safariShim.shimTrackEventTransceiver(window);
+ safariShim.shimGetUserMedia(window);
+
+ commonShim.shimRTCIceCandidate(window);
+ commonShim.shimMaxMessageSize(window);
+ commonShim.shimSendThrowTypeError(window);
+ break;
+ default:
+ logging('Unsupported browser!');
+ break;
+ }
+
+ return adapter;
+ };
+
+ },{"./chrome/chrome_shim":5,"./common_shim":7,"./edge/edge_shim":8,"./firefox/firefox_shim":11,"./safari/safari_shim":13,"./utils":14}],5:[function(require,module,exports){
+
+ /*
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree.
+ */
+ /* eslint-env node */
+ 'use strict';
+ var utils = require('../utils.js');
+ var logging = utils.log;
+
+ /* iterates the stats graph recursively. */
+ function walkStats(stats, base, resultSet) {
+ if (!base || resultSet.has(base.id)) {
+ return;
+ }
+ resultSet.set(base.id, base);
+ Object.keys(base).forEach(function(name) {
+ if (name.endsWith('Id')) {
+ walkStats(stats, stats.get(base[name]), resultSet);
+ } else if (name.endsWith('Ids')) {
+ base[name].forEach(function(id) {
+ walkStats(stats, stats.get(id), resultSet);
+ });
+ }
+ });
+ }
+
+ /* filter getStats for a sender/receiver track. */
+ function filterStats(result, track, outbound) {
+ var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';
+ var filteredResult = new Map();
+ if (track === null) {
+ return filteredResult;
+ }
+ var trackStats = [];
+ result.forEach(function(value) {
+ if (value.type === 'track' &&
+ value.trackIdentifier === track.id) {
+ trackStats.push(value);
+ }
+ });
+ trackStats.forEach(function(trackStat) {
+ result.forEach(function(stats) {
+ if (stats.type === streamStatsType && stats.trackId === trackStat.id) {
+ walkStats(result, stats, filteredResult);
+ }
+ });
+ });
+ return filteredResult;
+ }
+
+ module.exports = {
+ shimGetUserMedia: require('./getusermedia'),
+ shimMediaStream: function(window) {
+ window.MediaStream = window.MediaStream || window.webkitMediaStream;
+ },
+
+ shimOnTrack: function(window) {
+ if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in
+ window.RTCPeerConnection.prototype)) {
+ Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
+ get: function() {
+ return this._ontrack;
+ },
+ set: function(f) {
+ if (this._ontrack) {
+ this.removeEventListener('track', this._ontrack);
+ }
+ this.addEventListener('track', this._ontrack = f);
+ },
+ enumerable: true,
+ configurable: true
+ });
+ var origSetRemoteDescription =
+ window.RTCPeerConnection.prototype.setRemoteDescription;
+ window.RTCPeerConnection.prototype.setRemoteDescription = function() {
+ var pc = this;
+ if (!pc._ontrackpoly) {
+ pc._ontrackpoly = function(e) {
+ // onaddstream does not fire when a track is added to an existing
+ // stream. But stream.onaddtrack is implemented so we use that.
+ e.stream.addEventListener('addtrack', function(te) {
+ var receiver;
+ if (window.RTCPeerConnection.prototype.getReceivers) {
+ receiver = pc.getReceivers().find(function(r) {
+ return r.track && r.track.id === te.track.id;
+ });
+ } else {
+ receiver = {track: te.track};
+ }
+
+ var event = new Event('track');
+ event.track = te.track;
+ event.receiver = receiver;
+ event.transceiver = {receiver: receiver};
+ event.streams = [e.stream];
+ pc.dispatchEvent(event);
+ });
+ e.stream.getTracks().forEach(function(track) {
+ var receiver;
+ if (window.RTCPeerConnection.prototype.getReceivers) {
+ receiver = pc.getReceivers().find(function(r) {
+ return r.track && r.track.id === track.id;
+ });
+ } else {
+ receiver = {track: track};
+ }
+ var event = new Event('track');
+ event.track = track;
+ event.receiver = receiver;
+ event.transceiver = {receiver: receiver};
+ event.streams = [e.stream];
+ pc.dispatchEvent(event);
+ });
+ };
+ pc.addEventListener('addstream', pc._ontrackpoly);
+ }
+ return origSetRemoteDescription.apply(pc, arguments);
+ };
+ } else {
+ // even if RTCRtpTransceiver is in window, it is only used and
+ // emitted in unified-plan. Unfortunately this means we need
+ // to unconditionally wrap the event.
+ utils.wrapPeerConnectionEvent(window, 'track', function(e) {
+ if (!e.transceiver) {
+ Object.defineProperty(e, 'transceiver',
+ {value: {receiver: e.receiver}});
+ }
+ return e;
+ });
+ }
+ },
+
+ shimGetSendersWithDtmf: function(window) {
+ // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
+ if (typeof window === 'object' && window.RTCPeerConnection &&
+ !('getSenders' in window.RTCPeerConnection.prototype) &&
+ 'createDTMFSender' in window.RTCPeerConnection.prototype) {
+ var shimSenderWithDtmf = function(pc, track) {
+ return {
+ track: track,
+ get dtmf() {
+ if (this._dtmf === undefined) {
+ if (track.kind === 'audio') {
+ this._dtmf = pc.createDTMFSender(track);
+ } else {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ },
+ _pc: pc
+ };
+ };
+
+ // augment addTrack when getSenders is not available.
+ if (!window.RTCPeerConnection.prototype.getSenders) {
+ window.RTCPeerConnection.prototype.getSenders = function() {
+ this._senders = this._senders || [];
+ return this._senders.slice(); // return a copy of the internal state.
+ };
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ var pc = this;
+ var sender = origAddTrack.apply(pc, arguments);
+ if (!sender) {
+ sender = shimSenderWithDtmf(pc, track);
+ pc._senders.push(sender);
+ }
+ return sender;
+ };
+
+ var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
+ window.RTCPeerConnection.prototype.removeTrack = function(sender) {
+ var pc = this;
+ origRemoveTrack.apply(pc, arguments);
+ var idx = pc._senders.indexOf(sender);
+ if (idx !== -1) {
+ pc._senders.splice(idx, 1);
+ }
+ };
+ }
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ pc._senders = pc._senders || [];
+ origAddStream.apply(pc, [stream]);
+ stream.getTracks().forEach(function(track) {
+ pc._senders.push(shimSenderWithDtmf(pc, track));
+ });
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ pc._senders = pc._senders || [];
+ origRemoveStream.apply(pc, [stream]);
+
+ stream.getTracks().forEach(function(track) {
+ var sender = pc._senders.find(function(s) {
+ return s.track === track;
+ });
+ if (sender) {
+ pc._senders.splice(pc._senders.indexOf(sender), 1); // remove sender
+ }
+ });
+ };
+ } else if (typeof window === 'object' && window.RTCPeerConnection &&
+ 'getSenders' in window.RTCPeerConnection.prototype &&
+ 'createDTMFSender' in window.RTCPeerConnection.prototype &&
+ window.RTCRtpSender &&
+ !('dtmf' in window.RTCRtpSender.prototype)) {
+ var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
+ window.RTCPeerConnection.prototype.getSenders = function() {
+ var pc = this;
+ var senders = origGetSenders.apply(pc, []);
+ senders.forEach(function(sender) {
+ sender._pc = pc;
+ });
+ return senders;
+ };
+
+ Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
+ get: function() {
+ if (this._dtmf === undefined) {
+ if (this.track.kind === 'audio') {
+ this._dtmf = this._pc.createDTMFSender(this.track);
+ } else {
+ this._dtmf = null;
+ }
+ }
+ return this._dtmf;
+ }
+ });
+ }
+ },
+
+ shimSenderReceiverGetStats: function(window) {
+ if (!(typeof window === 'object' && window.RTCPeerConnection &&
+ window.RTCRtpSender && window.RTCRtpReceiver)) {
+ return;
+ }
+
+ // shim sender stats.
+ if (!('getStats' in window.RTCRtpSender.prototype)) {
+ var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
+ if (origGetSenders) {
+ window.RTCPeerConnection.prototype.getSenders = function() {
+ var pc = this;
+ var senders = origGetSenders.apply(pc, []);
+ senders.forEach(function(sender) {
+ sender._pc = pc;
+ });
+ return senders;
+ };
+ }
+
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ if (origAddTrack) {
+ window.RTCPeerConnection.prototype.addTrack = function() {
+ var sender = origAddTrack.apply(this, arguments);
+ sender._pc = this;
+ return sender;
+ };
+ }
+ window.RTCRtpSender.prototype.getStats = function() {
+ var sender = this;
+ return this._pc.getStats().then(function(result) {
+ /* Note: this will include stats of all senders that
+ * send a track with the same id as sender.track as
+ * it is not possible to identify the RTCRtpSender.
+ */
+ return filterStats(result, sender.track, true);
+ });
+ };
+ }
+
+ // shim receiver stats.
+ if (!('getStats' in window.RTCRtpReceiver.prototype)) {
+ var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
+ if (origGetReceivers) {
+ window.RTCPeerConnection.prototype.getReceivers = function() {
+ var pc = this;
+ var receivers = origGetReceivers.apply(pc, []);
+ receivers.forEach(function(receiver) {
+ receiver._pc = pc;
+ });
+ return receivers;
+ };
+ }
+ utils.wrapPeerConnectionEvent(window, 'track', function(e) {
+ e.receiver._pc = e.srcElement;
+ return e;
+ });
+ window.RTCRtpReceiver.prototype.getStats = function() {
+ var receiver = this;
+ return this._pc.getStats().then(function(result) {
+ return filterStats(result, receiver.track, false);
+ });
+ };
+ }
+
+ if (!('getStats' in window.RTCRtpSender.prototype &&
+ 'getStats' in window.RTCRtpReceiver.prototype)) {
+ return;
+ }
+
+ // shim RTCPeerConnection.getStats(track).
+ var origGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function() {
+ var pc = this;
+ if (arguments.length > 0 &&
+ arguments[0] instanceof window.MediaStreamTrack) {
+ var track = arguments[0];
+ var sender;
+ var receiver;
+ var err;
+ pc.getSenders().forEach(function(s) {
+ if (s.track === track) {
+ if (sender) {
+ err = true;
+ } else {
+ sender = s;
+ }
+ }
+ });
+ pc.getReceivers().forEach(function(r) {
+ if (r.track === track) {
+ if (receiver) {
+ err = true;
+ } else {
+ receiver = r;
+ }
+ }
+ return r.track === track;
+ });
+ if (err || (sender && receiver)) {
+ return Promise.reject(new DOMException(
+ 'There are more than one sender or receiver for the track.',
+ 'InvalidAccessError'));
+ } else if (sender) {
+ return sender.getStats();
+ } else if (receiver) {
+ return receiver.getStats();
+ }
+ return Promise.reject(new DOMException(
+ 'There is no sender or receiver for the track.',
+ 'InvalidAccessError'));
+ }
+ return origGetStats.apply(pc, arguments);
+ };
+ },
+
+ shimSourceObject: function(window) {
+ var URL = window && window.URL;
+
+ if (typeof window === 'object') {
+ if (window.HTMLMediaElement &&
+ !('srcObject' in window.HTMLMediaElement.prototype)) {
+ // Shim the srcObject property, once, when HTMLMediaElement is found.
+ Object.defineProperty(window.HTMLMediaElement.prototype, 'srcObject', {
+ get: function() {
+ return this._srcObject;
+ },
+ set: function(stream) {
+ var self = this;
+ // Use _srcObject as a private property for this shim
+ this._srcObject = stream;
+ if (this.src) {
+ URL.revokeObjectURL(this.src);
+ }
+
+ if (!stream) {
+ this.src = '';
+ return undefined;
+ }
+ this.src = URL.createObjectURL(stream);
+ // We need to recreate the blob url when a track is added or
+ // removed. Doing it manually since we want to avoid a recursion.
+ stream.addEventListener('addtrack', function() {
+ if (self.src) {
+ URL.revokeObjectURL(self.src);
+ }
+ self.src = URL.createObjectURL(stream);
+ });
+ stream.addEventListener('removetrack', function() {
+ if (self.src) {
+ URL.revokeObjectURL(self.src);
+ }
+ self.src = URL.createObjectURL(stream);
+ });
+ }
+ });
+ }
+ }
+ },
+
+ shimAddTrackRemoveTrackWithNative: function(window) {
+ // shim addTrack/removeTrack with native variants in order to make
+ // the interactions with legacy getLocalStreams behave as in other browsers.
+ // Keeps a mapping stream.id => [stream, rtpsenders...]
+ window.RTCPeerConnection.prototype.getLocalStreams = function() {
+ var pc = this;
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ return Object.keys(this._shimmedLocalStreams).map(function(streamId) {
+ return pc._shimmedLocalStreams[streamId][0];
+ });
+ };
+
+ var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ if (!stream) {
+ return origAddTrack.apply(this, arguments);
+ }
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+
+ var sender = origAddTrack.apply(this, arguments);
+ if (!this._shimmedLocalStreams[stream.id]) {
+ this._shimmedLocalStreams[stream.id] = [stream, sender];
+ } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {
+ this._shimmedLocalStreams[stream.id].push(sender);
+ }
+ return sender;
+ };
+
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+
+ stream.getTracks().forEach(function(track) {
+ var alreadyExists = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.',
+ 'InvalidAccessError');
+ }
+ });
+ var existingSenders = pc.getSenders();
+ origAddStream.apply(this, arguments);
+ var newSenders = pc.getSenders().filter(function(newSender) {
+ return existingSenders.indexOf(newSender) === -1;
+ });
+ this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ delete this._shimmedLocalStreams[stream.id];
+ return origRemoveStream.apply(this, arguments);
+ };
+
+ var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
+ window.RTCPeerConnection.prototype.removeTrack = function(sender) {
+ var pc = this;
+ this._shimmedLocalStreams = this._shimmedLocalStreams || {};
+ if (sender) {
+ Object.keys(this._shimmedLocalStreams).forEach(function(streamId) {
+ var idx = pc._shimmedLocalStreams[streamId].indexOf(sender);
+ if (idx !== -1) {
+ pc._shimmedLocalStreams[streamId].splice(idx, 1);
+ }
+ if (pc._shimmedLocalStreams[streamId].length === 1) {
+ delete pc._shimmedLocalStreams[streamId];
+ }
+ });
+ }
+ return origRemoveTrack.apply(this, arguments);
+ };
+ },
+
+ shimAddTrackRemoveTrack: function(window) {
+ var browserDetails = utils.detectBrowser(window);
+ // shim addTrack and removeTrack.
+ if (window.RTCPeerConnection.prototype.addTrack &&
+ browserDetails.version >= 65) {
+ return this.shimAddTrackRemoveTrackWithNative(window);
+ }
+
+ // also shim pc.getLocalStreams when addTrack is shimmed
+ // to return the original streams.
+ var origGetLocalStreams = window.RTCPeerConnection.prototype
+ .getLocalStreams;
+ window.RTCPeerConnection.prototype.getLocalStreams = function() {
+ var pc = this;
+ var nativeStreams = origGetLocalStreams.apply(this);
+ pc._reverseStreams = pc._reverseStreams || {};
+ return nativeStreams.map(function(stream) {
+ return pc._reverseStreams[stream.id];
+ });
+ };
+
+ var origAddStream = window.RTCPeerConnection.prototype.addStream;
+ window.RTCPeerConnection.prototype.addStream = function(stream) {
+ var pc = this;
+ pc._streams = pc._streams || {};
+ pc._reverseStreams = pc._reverseStreams || {};
+
+ stream.getTracks().forEach(function(track) {
+ var alreadyExists = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.',
+ 'InvalidAccessError');
+ }
+ });
+ // Add identity mapping for consistency with addTrack.
+ // Unless this is being used with a stream from addTrack.
+ if (!pc._reverseStreams[stream.id]) {
+ var newStream = new window.MediaStream(stream.getTracks());
+ pc._streams[stream.id] = newStream;
+ pc._reverseStreams[newStream.id] = stream;
+ stream = newStream;
+ }
+ origAddStream.apply(pc, [stream]);
+ };
+
+ var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
+ window.RTCPeerConnection.prototype.removeStream = function(stream) {
+ var pc = this;
+ pc._streams = pc._streams || {};
+ pc._reverseStreams = pc._reverseStreams || {};
+
+ origRemoveStream.apply(pc, [(pc._streams[stream.id] || stream)]);
+ delete pc._reverseStreams[(pc._streams[stream.id] ?
+ pc._streams[stream.id].id : stream.id)];
+ delete pc._streams[stream.id];
+ };
+
+ window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
+ var pc = this;
+ if (pc.signalingState === 'closed') {
+ throw new DOMException(
+ 'The RTCPeerConnection\'s signalingState is \'closed\'.',
+ 'InvalidStateError');
+ }
+ var streams = [].slice.call(arguments, 1);
+ if (streams.length !== 1 ||
+ !streams[0].getTracks().find(function(t) {
+ return t === track;
+ })) {
+ // this is not fully correct but all we can manage without
+ // [[associated MediaStreams]] internal slot.
+ throw new DOMException(
+ 'The adapter.js addTrack polyfill only supports a single ' +
+ ' stream which is associated with the specified track.',
+ 'NotSupportedError');
+ }
+
+ var alreadyExists = pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ if (alreadyExists) {
+ throw new DOMException('Track already exists.',
+ 'InvalidAccessError');
+ }
+
+ pc._streams = pc._streams || {};
+ pc._reverseStreams = pc._reverseStreams || {};
+ var oldStream = pc._streams[stream.id];
+ if (oldStream) {
+ // this is using odd Chrome behaviour, use with caution:
+ // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815
+ // Note: we rely on the high-level addTrack/dtmf shim to
+ // create the sender with a dtmf sender.
+ oldStream.addTrack(track);
+
+ // Trigger ONN async.
+ Promise.resolve().then(function() {
+ pc.dispatchEvent(new Event('negotiationneeded'));
+ });
+ } else {
+ var newStream = new window.MediaStream([track]);
+ pc._streams[stream.id] = newStream;
+ pc._reverseStreams[newStream.id] = stream;
+ pc.addStream(newStream);
+ }
+ return pc.getSenders().find(function(s) {
+ return s.track === track;
+ });
+ };
+
+ // replace the internal stream id with the external one and
+ // vice versa.
+ function replaceInternalStreamId(pc, description) {
+ var sdp = description.sdp;
+ Object.keys(pc._reverseStreams || []).forEach(function(internalId) {
+ var externalStream = pc._reverseStreams[internalId];
+ var internalStream = pc._streams[externalStream.id];
+ sdp = sdp.replace(new RegExp(internalStream.id, 'g'),
+ externalStream.id);
+ });
+ return new RTCSessionDescription({
+ type: description.type,
+ sdp: sdp
+ });
+ }
+ function replaceExternalStreamId(pc, description) {
+ var sdp = description.sdp;
+ Object.keys(pc._reverseStreams || []).forEach(function(internalId) {
+ var externalStream = pc._reverseStreams[internalId];
+ var internalStream = pc._streams[externalStream.id];
+ sdp = sdp.replace(new RegExp(externalStream.id, 'g'),
+ internalStream.id);
+ });
+ return new RTCSessionDescription({
+ type: description.type,
+ sdp: sdp
+ });
+ }
+ ['createOffer', 'createAnswer'].forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ var pc = this;
+ var args = arguments;
+ var isLegacyCall = arguments.length &&
+ typeof arguments[0] === 'function';
+ if (isLegacyCall) {
+ return nativeMethod.apply(pc, [
+ function(description) {
+ var desc = replaceInternalStreamId(pc, description);
+ args[0].apply(null, [desc]);
+ },
+ function(err) {
+ if (args[1]) {
+ args[1].apply(null, err);
+ }
+ }, arguments[2]
+ ]);
+ }
+ return nativeMethod.apply(pc, arguments)
+ .then(function(description) {
+ return replaceInternalStreamId(pc, description);
+ });
+ };
+ });
+
+ var origSetLocalDescription =
+ window.RTCPeerConnection.prototype.setLocalDescription;
+ window.RTCPeerConnection.prototype.setLocalDescription = function() {
+ var pc = this;
+ if (!arguments.length || !arguments[0].type) {
+ return origSetLocalDescription.apply(pc, arguments);
+ }
+ arguments[0] = replaceExternalStreamId(pc, arguments[0]);
+ return origSetLocalDescription.apply(pc, arguments);
+ };
+
+ // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier
+
+ var origLocalDescription = Object.getOwnPropertyDescriptor(
+ window.RTCPeerConnection.prototype, 'localDescription');
+ Object.defineProperty(window.RTCPeerConnection.prototype,
+ 'localDescription', {
+ get: function() {
+ var pc = this;
+ var description = origLocalDescription.get.apply(this);
+ if (description.type === '') {
+ return description;
+ }
+ return replaceInternalStreamId(pc, description);
+ }
+ });
+
+ window.RTCPeerConnection.prototype.removeTrack = function(sender) {
+ var pc = this;
+ if (pc.signalingState === 'closed') {
+ throw new DOMException(
+ 'The RTCPeerConnection\'s signalingState is \'closed\'.',
+ 'InvalidStateError');
+ }
+ // We can not yet check for sender instanceof RTCRtpSender
+ // since we shim RTPSender. So we check if sender._pc is set.
+ if (!sender._pc) {
+ throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' +
+ 'does not implement interface RTCRtpSender.', 'TypeError');
+ }
+ var isLocal = sender._pc === pc;
+ if (!isLocal) {
+ throw new DOMException('Sender was not created by this connection.',
+ 'InvalidAccessError');
+ }
+
+ // Search for the native stream the senders track belongs to.
+ pc._streams = pc._streams || {};
+ var stream;
+ Object.keys(pc._streams).forEach(function(streamid) {
+ var hasTrack = pc._streams[streamid].getTracks().find(function(track) {
+ return sender.track === track;
+ });
+ if (hasTrack) {
+ stream = pc._streams[streamid];
+ }
+ });
+
+ if (stream) {
+ if (stream.getTracks().length === 1) {
+ // if this is the last track of the stream, remove the stream. This
+ // takes care of any shimmed _senders.
+ pc.removeStream(pc._reverseStreams[stream.id]);
+ } else {
+ // relying on the same odd chrome behaviour as above.
+ stream.removeTrack(sender.track);
+ }
+ pc.dispatchEvent(new Event('negotiationneeded'));
+ }
+ };
+ },
+
+ shimPeerConnection: function(window) {
+ var browserDetails = utils.detectBrowser(window);
+
+ // The RTCPeerConnection object.
+ if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {
+ window.RTCPeerConnection = function(pcConfig, pcConstraints) {
+ // Translate iceTransportPolicy to iceTransports,
+ // see https://code.google.com/p/webrtc/issues/detail?id=4869
+ // this was fixed in M56 along with unprefixing RTCPeerConnection.
+ logging('PeerConnection');
+ if (pcConfig && pcConfig.iceTransportPolicy) {
+ pcConfig.iceTransports = pcConfig.iceTransportPolicy;
+ }
+
+ return new window.webkitRTCPeerConnection(pcConfig, pcConstraints);
+ };
+ window.RTCPeerConnection.prototype =
+ window.webkitRTCPeerConnection.prototype;
+ // wrap static methods. Currently just generateCertificate.
+ if (window.webkitRTCPeerConnection.generateCertificate) {
+ Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
+ get: function() {
+ return window.webkitRTCPeerConnection.generateCertificate;
+ }
+ });
+ }
+ }
+
+ var origGetStats = window.RTCPeerConnection.prototype.getStats;
+ window.RTCPeerConnection.prototype.getStats = function(selector,
+ successCallback, errorCallback) {
+ var pc = this;
+ var args = arguments;
+
+ // If selector is a function then we are in the old style stats so just
+ // pass back the original getStats format to avoid breaking old users.
+ if (arguments.length > 0 && typeof selector === 'function') {
+ return origGetStats.apply(this, arguments);
+ }
+
+ // When spec-style getStats is supported, return those when called with
+ // either no arguments or the selector argument is null.
+ if (origGetStats.length === 0 && (arguments.length === 0 ||
+ typeof arguments[0] !== 'function')) {
+ return origGetStats.apply(this, []);
+ }
+
+ var fixChromeStats_ = function(response) {
+ var standardReport = {};
+ var reports = response.result();
+ reports.forEach(function(report) {
+ var standardStats = {
+ id: report.id,
+ timestamp: report.timestamp,
+ type: {
+ localcandidate: 'local-candidate',
+ remotecandidate: 'remote-candidate'
+ }[report.type] || report.type
+ };
+ report.names().forEach(function(name) {
+ standardStats[name] = report.stat(name);
+ });
+ standardReport[standardStats.id] = standardStats;
+ });
+
+ return standardReport;
+ };
+
+ // shim getStats with maplike support
+ var makeMapStats = function(stats) {
+ return new Map(Object.keys(stats).map(function(key) {
+ return [key, stats[key]];
+ }));
+ };
+
+ if (arguments.length >= 2) {
+ var successCallbackWrapper_ = function(response) {
+ args[1](makeMapStats(fixChromeStats_(response)));
+ };
+
+ return origGetStats.apply(this, [successCallbackWrapper_,
+ arguments[0]]);
+ }
+
+ // promise-support
+ return new Promise(function(resolve, reject) {
+ origGetStats.apply(pc, [
+ function(response) {
+ resolve(makeMapStats(fixChromeStats_(response)));
+ }, reject]);
+ }).then(successCallback, errorCallback);
+ };
+
+ // add promise support -- natively available in Chrome 51
+ if (browserDetails.version < 51) {
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']
+ .forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ var args = arguments;
+ var pc = this;
+ var promise = new Promise(function(resolve, reject) {
+ nativeMethod.apply(pc, [args[0], resolve, reject]);
+ });
+ if (args.length < 2) {
+ return promise;
+ }
+ return promise.then(function() {
+ args[1].apply(null, []);
+ },
+ function(err) {
+ if (args.length >= 3) {
+ args[2].apply(null, [err]);
+ }
+ });
+ };
+ });
+ }
+
+ // promise support for createOffer and createAnswer. Available (without
+ // bugs) since M52: crbug/619289
+ if (browserDetails.version < 52) {
+ ['createOffer', 'createAnswer'].forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ var pc = this;
+ if (arguments.length < 1 || (arguments.length === 1 &&
+ typeof arguments[0] === 'object')) {
+ var opts = arguments.length === 1 ? arguments[0] : undefined;
+ return new Promise(function(resolve, reject) {
+ nativeMethod.apply(pc, [resolve, reject, opts]);
+ });
+ }
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+ }
+
+ // shim implicit creation of RTCSessionDescription/RTCIceCandidate
+ ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']
+ .forEach(function(method) {
+ var nativeMethod = window.RTCPeerConnection.prototype[method];
+ window.RTCPeerConnection.prototype[method] = function() {
+ arguments[0] = new ((method === 'addIceCandidate') ?
+ window.RTCIceCandidate :
+ window.RTCSessionDescription)(arguments[0]);
+ return nativeMethod.apply(this, arguments);
+ };
+ });
+
+ // support for addIceCandidate(null or undefined)
+ var nativeAddIceCandidate =
+ window.RTCPeerConnection.prototype.addIceCandidate;
+ window.RTCPeerConnection.prototype.addIceCandidate = function() {
+ if (!arguments[0]) {
+ if (arguments[1]) {
+ arguments[1].apply(null);
+ }
+ return Promise.resolve();
+ }
+ return nativeAddIceCandidate.apply(this, arguments);
+ };
+ },
+
+ fixNegotiationNeeded: function(window) {
+ utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function(e) {
+ var pc = e.target;
+ if (pc.signalingState !== 'stable') {
+ return;
+ }
+ return e;
+ });
+ },
+
+ shimGetDisplayMedia: function(window, getSourceId) {
+ if ('getDisplayMedia' in window.navigator) {
+ return;
+ }
+ // getSourceId is a function that returns a promise resolving with
+ // the sourceId of the screen/window/tab to be shared.
+ if (typeof getSourceId !== 'function') {
+ console.error('shimGetDisplayMedia: getSourceId argument is not ' +
+ 'a function');
+ return;
+ }
+ navigator.getDisplayMedia = function(constraints) {
+ return getSourceId(constraints)
+ .then(function(sourceId) {
+ constraints.video = {
+ mandatory: {
+ chromeMediaSource: 'desktop',
+ chromeMediaSourceId: sourceId,
+ maxFrameRate: constraints.video.frameRate || 3
+ }
+ };
+ return navigator.mediaDevices.getUserMedia(constraints);
});
- e.stream.getTracks().forEach(function(track) {
- var receiver;
- if (window.RTCPeerConnection.prototype.getReceivers) {
- receiver = pc.getReceivers().find(function(r) {
- return r.track && r.track.id === track.id;
- });
- } else {
- receiver = {track: track};
+ };
+ }
+ };
+
+ },{"../utils.js":14,"./getusermedia":6}],6:[function(require,module,exports){
+ /*
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree.
+ */
+ /* eslint-env node */
+ 'use strict';
+ var utils = require('../utils.js');
+ var logging = utils.log;
+
+ // Expose public methods.
+ module.exports = function(window) {
+ var browserDetails = utils.detectBrowser(window);
+ var navigator = window && window.navigator;
+
+ var constraintsToChrome_ = function(c) {
+ if (typeof c !== 'object' || c.mandatory || c.optional) {
+ return c;
+ }
+ var cc = {};
+ Object.keys(c).forEach(function(key) {
+ if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
+ return;
+ }
+ var r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};
+ if (r.exact !== undefined && typeof r.exact === 'number') {
+ r.min = r.max = r.exact;
+ }
+ var oldname_ = function(prefix, name) {
+ if (prefix) {
+ return prefix + name.charAt(0).toUpperCase() + name.slice(1);
+ }
+ return (name === 'deviceId') ? 'sourceId' : name;
+ };
+ if (r.ideal !== undefined) {
+ cc.optional = cc.optional || [];
+ var oc = {};
+ if (typeof r.ideal === 'number') {
+ oc[oldname_('min', key)] = r.ideal;
+ cc.optional.push(oc);
+ oc = {};
+ oc[oldname_('max', key)] = r.ideal;
+ cc.optional.push(oc);
+ } else {
+ oc[oldname_('', key)] = r.ideal;
+ cc.optional.push(oc);
+ }
+ }
+ if (r.exact !== undefined && typeof r.exact !== 'number') {
+ cc.mandatory = cc.mandatory || {};
+ cc.mandatory[oldname_('', key)] = r.exact;
+ } else {
+ ['min', 'max'].forEach(function(mix) {
+ if (r[mix] !== undefined) {
+ cc.mandatory = cc.mandatory || {};
+ cc.mandatory[oldname_(mix, key)] = r[mix];
}
- var event = new Event('track');
- event.track = track;
- event.receiver = receiver;
- event.transceiver = {receiver: receiver};
- event.streams = [e.stream];
- pc.dispatchEvent(event);
});
- };
- pc.addEventListener('addstream', pc._ontrackpoly);
+ }
+ });
+ if (c.advanced) {
+ cc.optional = (cc.optional || []).concat(c.advanced);
}
- return origSetRemoteDescription.apply(pc, arguments);
+ return cc;
};
- } else if (!('RTCRtpTransceiver' in window)) {
- utils.wrapPeerConnectionEvent(window, 'track', function(e) {
- if (!e.transceiver) {
- e.transceiver = {receiver: e.receiver};
+
+ var shimConstraints_ = function(constraints, func) {
+ if (browserDetails.version >= 61) {
+ return func(constraints);
}
- return e;
- });
- }
- },
-
- shimGetSendersWithDtmf: function(window) {
- // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
- if (typeof window === 'object' && window.RTCPeerConnection &&
- !('getSenders' in window.RTCPeerConnection.prototype) &&
- 'createDTMFSender' in window.RTCPeerConnection.prototype) {
- var shimSenderWithDtmf = function(pc, track) {
- return {
- track: track,
- get dtmf() {
- if (this._dtmf === undefined) {
- if (track.kind === 'audio') {
- this._dtmf = pc.createDTMFSender(track);
- } else {
- this._dtmf = null;
- }
+ constraints = JSON.parse(JSON.stringify(constraints));
+ if (constraints && typeof constraints.audio === 'object') {
+ var remap = function(obj, a, b) {
+ if (a in obj && !(b in obj)) {
+ obj[b] = obj[a];
+ delete obj[a];
+ }
+ };
+ constraints = JSON.parse(JSON.stringify(constraints));
+ remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');
+ remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');
+ constraints.audio = constraintsToChrome_(constraints.audio);
+ }
+ if (constraints && typeof constraints.video === 'object') {
+ // Shim facingMode for mobile & surface pro.
+ var face = constraints.video.facingMode;
+ face = face && ((typeof face === 'object') ? face : {ideal: face});
+ var getSupportedFacingModeLies = browserDetails.version < 66;
+
+ if ((face && (face.exact === 'user' || face.exact === 'environment' ||
+ face.ideal === 'user' || face.ideal === 'environment')) &&
+ !(navigator.mediaDevices.getSupportedConstraints &&
+ navigator.mediaDevices.getSupportedConstraints().facingMode &&
+ !getSupportedFacingModeLies)) {
+ delete constraints.video.facingMode;
+ var matches;
+ if (face.exact === 'environment' || face.ideal === 'environment') {
+ matches = ['back', 'rear'];
+ } else if (face.exact === 'user' || face.ideal === 'user') {
+ matches = ['front'];
+ }
+ if (matches) {
+ // Look for matches in label, or use last cam for back (typical).
+ return navigator.mediaDevices.enumerateDevices()
+ .then(function(devices) {
+ devices = devices.filter(function(d) {
+ return d.kind === 'videoinput';
+ });
+ var dev = devices.find(function(d) {
+ return matches.some(function(match) {
+ return d.label.toLowerCase().indexOf(match) !== -1;
+ });
+ });
+ if (!dev && devices.length && matches.indexOf('back') !== -1) {
+ dev = devices[devices.length - 1]; // more likely the back cam
+ }
+ if (dev) {
+ constraints.video.deviceId = face.exact ? {exact: dev.deviceId} :
+ {ideal: dev.deviceId};
+ }
+ constraints.video = constraintsToChrome_(constraints.video);
+ logging('chrome: ' + JSON.stringify(constraints));
+ return func(constraints);
+ });
}
- return this._dtmf;
- },
- _pc: pc
- };
- };
-
- // augment addTrack when getSenders is not available.
- if (!window.RTCPeerConnection.prototype.getSenders) {
- window.RTCPeerConnection.prototype.getSenders = function() {
- this._senders = this._senders || [];
- return this._senders.slice(); // return a copy of the internal state.
- };
- var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
- window.RTCPeerConnection.prototype.addTrack = function(track, stream) {
- var pc = this;
- var sender = origAddTrack.apply(pc, arguments);
- if (!sender) {
-
