(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.adapter=f()}})(function(){var define,module,exports;return(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){'use strict';var _adapter_factory=require('./adapter_factory.js');var adapter=(0,_adapter_factory.adapterFactory)({window:window});module.exports=adapter;},{"./adapter_factory.js":2}],2:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.adapterFactory=adapterFactory;var _utils=require('./utils');var utils=_interopRequireWildcard(_utils);var _chrome_shim=require('./chrome/chrome_shim');var chromeShim=_interopRequireWildcard(_chrome_shim);var _edge_shim=require('./edge/edge_shim');var edgeShim=_interopRequireWildcard(_edge_shim);var _firefox_shim=require('./firefox/firefox_shim');var firefoxShim=_interopRequireWildcard(_firefox_shim);var _safari_shim=require('./safari/safari_shim');var safariShim=_interopRequireWildcard(_safari_shim);var _common_shim=require('./common_shim');var commonShim=_interopRequireWildcard(_common_shim);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function adapterFactory(){var _ref=arguments.length>0&&arguments[0]!==undefined?arguments[0]:{},window=_ref.window;var options=arguments.length>1&&arguments[1]!==undefined?arguments[1]:{shimChrome:true,shimFirefox:true,shimEdge:true,shimSafari:true};var logging=utils.log;var browserDetails=utils.detectBrowser(window);var adapter={browserDetails:browserDetails,commonShim:commonShim,extractVersion:utils.extractVersion,disableLog:utils.disableLog,disableWarnings:utils.disableWarnings};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.');adapter.browserShim=chromeShim;chromeShim.shimGetUserMedia(window);chromeShim.shimMediaStream(window);chromeShim.shimPeerConnection(window);chromeShim.shimOnTrack(window);chromeShim.shimAddTrackRemoveTrack(window);chromeShim.shimGetSendersWithDtmf(window);chromeShim.shimGetStats(window);chromeShim.shimSenderReceiverGetStats(window);chromeShim.fixNegotiationNeeded(window);commonShim.shimRTCIceCandidate(window);commonShim.shimConnectionState(window);commonShim.shimMaxMessageSize(window);commonShim.shimSendThrowTypeError(window);commonShim.removeAllowExtmapMixed(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.');adapter.browserShim=firefoxShim;firefoxShim.shimGetUserMedia(window);firefoxShim.shimPeerConnection(window);firefoxShim.shimOnTrack(window);firefoxShim.shimRemoveStream(window);firefoxShim.shimSenderGetStats(window);firefoxShim.shimReceiverGetStats(window);firefoxShim.shimRTCDataChannel(window);commonShim.shimRTCIceCandidate(window);commonShim.shimConnectionState(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.');adapter.browserShim=edgeShim;edgeShim.shimGetUserMedia(window);edgeShim.shimGetDisplayMedia(window);edgeShim.shimPeerConnection(window);edgeShim.shimReplaceTrack(window);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.');adapter.browserShim=safariShim;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);commonShim.removeAllowExtmapMixed(window);break;default:logging('Unsupported browser!');break;}
return adapter;}},{"./chrome/chrome_shim":3,"./common_shim":6,"./edge/edge_shim":7,"./firefox/firefox_shim":11,"./safari/safari_shim":14,"./utils":15}],3:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetDisplayMedia=exports.shimGetUserMedia=undefined;var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};var _getusermedia=require('./getusermedia');Object.defineProperty(exports,'shimGetUserMedia',{enumerable:true,get:function get(){return _getusermedia.shimGetUserMedia;}});var _getdisplaymedia=require('./getdisplaymedia');Object.defineProperty(exports,'shimGetDisplayMedia',{enumerable:true,get:function get(){return _getdisplaymedia.shimGetDisplayMedia;}});exports.shimMediaStream=shimMediaStream;exports.shimOnTrack=shimOnTrack;exports.shimGetSendersWithDtmf=shimGetSendersWithDtmf;exports.shimGetStats=shimGetStats;exports.shimSenderReceiverGetStats=shimSenderReceiverGetStats;exports.shimAddTrackRemoveTrackWithNative=shimAddTrackRemoveTrackWithNative;exports.shimAddTrackRemoveTrack=shimAddTrackRemoveTrack;exports.shimPeerConnection=shimPeerConnection;exports.fixNegotiationNeeded=fixNegotiationNeeded;var _utils=require('../utils.js');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function shimMediaStream(window){window.MediaStream=window.MediaStream||window.webkitMediaStream;}
function shimOnTrack(window){if((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCPeerConnection&&!('ontrack'in window.RTCPeerConnection.prototype)){Object.defineProperty(window.RTCPeerConnection.prototype,'ontrack',{get:function get(){return this._ontrack;},set:function set(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 _this=this;if(!this._ontrackpoly){this._ontrackpoly=function(e){e.stream.addEventListener('addtrack',function(te){var receiver=void 0;if(window.RTCPeerConnection.prototype.getReceivers){receiver=_this.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];_this.dispatchEvent(event);});e.stream.getTracks().forEach(function(track){var receiver=void 0;if(window.RTCPeerConnection.prototype.getReceivers){receiver=_this.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];_this.dispatchEvent(event);});};this.addEventListener('addstream',this._ontrackpoly);}
return origSetRemoteDescription.apply(this,arguments);};}else{utils.wrapPeerConnectionEvent(window,'track',function(e){if(!e.transceiver){Object.defineProperty(e,'transceiver',{value:{receiver:e.receiver}});}
return e;});}}
function shimGetSendersWithDtmf(window){if((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCPeerConnection&&!('getSenders'in window.RTCPeerConnection.prototype)&&'createDTMFSender'in window.RTCPeerConnection.prototype){var shimSenderWithDtmf=function shimSenderWithDtmf(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};};if(!window.RTCPeerConnection.prototype.getSenders){window.RTCPeerConnection.prototype.getSenders=function(){this._senders=this._senders||[];return this._senders.slice();};var origAddTrack=window.RTCPeerConnection.prototype.addTrack;window.RTCPeerConnection.prototype.addTrack=function(track,stream){var sender=origAddTrack.apply(this,arguments);if(!sender){sender=shimSenderWithDtmf(this,track);this._senders.push(sender);}
return sender;};var origRemoveTrack=window.RTCPeerConnection.prototype.removeTrack;window.RTCPeerConnection.prototype.removeTrack=function(sender){origRemoveTrack.apply(this,arguments);var idx=this._senders.indexOf(sender);if(idx!==-1){this._senders.splice(idx,1);}};}
var origAddStream=window.RTCPeerConnection.prototype.addStream;window.RTCPeerConnection.prototype.addStream=function(stream){var _this2=this;this._senders=this._senders||[];origAddStream.apply(this,[stream]);stream.getTracks().forEach(function(track){_this2._senders.push(shimSenderWithDtmf(_this2,track));});};var origRemoveStream=window.RTCPeerConnection.prototype.removeStream;window.RTCPeerConnection.prototype.removeStream=function(stream){var _this3=this;this._senders=this._senders||[];origRemoveStream.apply(this,[stream]);stream.getTracks().forEach(function(track){var sender=_this3._senders.find(function(s){return s.track===track;});if(sender){_this3._senders.splice(_this3._senders.indexOf(sender),1);}});};}else if((typeof window==='undefined'?'undefined':_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 _this4=this;var senders=origGetSenders.apply(this,[]);senders.forEach(function(sender){return sender._pc=_this4;});return senders;};Object.defineProperty(window.RTCRtpSender.prototype,'dtmf',{get:function get(){if(this._dtmf===undefined){if(this.track.kind==='audio'){this._dtmf=this._pc.createDTMFSender(this.track);}else{this._dtmf=null;}}
return this._dtmf;}});}}
function shimGetStats(window){if(!window.RTCPeerConnection){return;}
var origGetStats=window.RTCPeerConnection.prototype.getStats;window.RTCPeerConnection.prototype.getStats=function(selector,successCallback,errorCallback){var _this5=this;var args=arguments;if(arguments.length>0&&typeof selector==='function'){return origGetStats.apply(this,arguments);}
if(origGetStats.length===0&&(arguments.length===0||typeof arguments[0]!=='function')){return origGetStats.apply(this,[]);}
var fixChromeStats_=function fixChromeStats_(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;};var makeMapStats=function makeMapStats(stats){return new Map(Object.keys(stats).map(function(key){return[key,stats[key]];}));};if(arguments.length>=2){var successCallbackWrapper_=function successCallbackWrapper_(response){args[1](makeMapStats(fixChromeStats_(response)));};return origGetStats.apply(this,[successCallbackWrapper_,arguments[0]]);}
return new Promise(function(resolve,reject){origGetStats.apply(_this5,[function(response){resolve(makeMapStats(fixChromeStats_(response)));},reject]);}).then(successCallback,errorCallback);};}
function shimSenderReceiverGetStats(window){if(!((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCPeerConnection&&window.RTCRtpSender&&window.RTCRtpReceiver)){return;}
if(!('getStats'in window.RTCRtpSender.prototype)){var origGetSenders=window.RTCPeerConnection.prototype.getSenders;if(origGetSenders){window.RTCPeerConnection.prototype.getSenders=function(){var _this6=this;var senders=origGetSenders.apply(this,[]);senders.forEach(function(sender){return sender._pc=_this6;});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){return(utils.filterStats(result,sender.track,true));});};}
if(!('getStats'in window.RTCRtpReceiver.prototype)){var origGetReceivers=window.RTCPeerConnection.prototype.getReceivers;if(origGetReceivers){window.RTCPeerConnection.prototype.getReceivers=function(){var _this7=this;var receivers=origGetReceivers.apply(this,[]);receivers.forEach(function(receiver){return receiver._pc=_this7;});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 utils.filterStats(result,receiver.track,false);});};}
if(!('getStats'in window.RTCRtpSender.prototype&&'getStats'in window.RTCRtpReceiver.prototype)){return;}
var origGetStats=window.RTCPeerConnection.prototype.getStats;window.RTCPeerConnection.prototype.getStats=function(){if(arguments.length>0&&arguments[0]instanceof window.MediaStreamTrack){var track=arguments[0];var sender=void 0;var receiver=void 0;var err=void 0;this.getSenders().forEach(function(s){if(s.track===track){if(sender){err=true;}else{sender=s;}}});this.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(this,arguments);};}
function shimAddTrackRemoveTrackWithNative(window){window.RTCPeerConnection.prototype.getLocalStreams=function(){var _this8=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{};return Object.keys(this._shimmedLocalStreams).map(function(streamId){return _this8._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 _this9=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{};stream.getTracks().forEach(function(track){var alreadyExists=_this9.getSenders().find(function(s){return s.track===track;});if(alreadyExists){throw new DOMException('Track already exists.','InvalidAccessError');}});var existingSenders=this.getSenders();origAddStream.apply(this,arguments);var newSenders=this.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 _this10=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{};if(sender){Object.keys(this._shimmedLocalStreams).forEach(function(streamId){var idx=_this10._shimmedLocalStreams[streamId].indexOf(sender);if(idx!==-1){_this10._shimmedLocalStreams[streamId].splice(idx,1);}
if(_this10._shimmedLocalStreams[streamId].length===1){delete _this10._shimmedLocalStreams[streamId];}});}
return origRemoveTrack.apply(this,arguments);};}
function shimAddTrackRemoveTrack(window){if(!window.RTCPeerConnection){return;}
var browserDetails=utils.detectBrowser(window);if(window.RTCPeerConnection.prototype.addTrack&&browserDetails.version>=65){return shimAddTrackRemoveTrackWithNative(window);}
var origGetLocalStreams=window.RTCPeerConnection.prototype.getLocalStreams;window.RTCPeerConnection.prototype.getLocalStreams=function(){var _this11=this;var nativeStreams=origGetLocalStreams.apply(this);this._reverseStreams=this._reverseStreams||{};return nativeStreams.map(function(stream){return _this11._reverseStreams[stream.id];});};var origAddStream=window.RTCPeerConnection.prototype.addStream;window.RTCPeerConnection.prototype.addStream=function(stream){var _this12=this;this._streams=this._streams||{};this._reverseStreams=this._reverseStreams||{};stream.getTracks().forEach(function(track){var alreadyExists=_this12.getSenders().find(function(s){return s.track===track;});if(alreadyExists){throw new DOMException('Track already exists.','InvalidAccessError');}});if(!this._reverseStreams[stream.id]){var newStream=new window.MediaStream(stream.getTracks());this._streams[stream.id]=newStream;this._reverseStreams[newStream.id]=stream;stream=newStream;}
origAddStream.apply(this,[stream]);};var origRemoveStream=window.RTCPeerConnection.prototype.removeStream;window.RTCPeerConnection.prototype.removeStream=function(stream){this._streams=this._streams||{};this._reverseStreams=this._reverseStreams||{};origRemoveStream.apply(this,[this._streams[stream.id]||stream]);delete this._reverseStreams[this._streams[stream.id]?this._streams[stream.id].id:stream.id];delete this._streams[stream.id];};window.RTCPeerConnection.prototype.addTrack=function(track,stream){var _this13=this;if(this.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;})){throw new DOMException('The adapter.js addTrack polyfill only supports a single '+' stream which is associated with the specified track.','NotSupportedError');}
var alreadyExists=this.getSenders().find(function(s){return s.track===track;});if(alreadyExists){throw new DOMException('Track already exists.','InvalidAccessError');}
this._streams=this._streams||{};this._reverseStreams=this._reverseStreams||{};var oldStream=this._streams[stream.id];if(oldStream){oldStream.addTrack(track);Promise.resolve().then(function(){_this13.dispatchEvent(new Event('negotiationneeded'));});}else{var newStream=new window.MediaStream([track]);this._streams[stream.id]=newStream;this._reverseStreams[newStream.id]=stream;this.addStream(newStream);}
return this.getSenders().find(function(s){return s.track===track;});};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 _this14=this;var args=arguments;var isLegacyCall=arguments.length&&typeof arguments[0]==='function';if(isLegacyCall){return nativeMethod.apply(this,[function(description){var desc=replaceInternalStreamId(_this14,description);args[0].apply(null,[desc]);},function(err){if(args[1]){args[1].apply(null,err);}},arguments[2]]);}
return nativeMethod.apply(this,arguments).then(function(description){return replaceInternalStreamId(_this14,description);});};});var origSetLocalDescription=window.RTCPeerConnection.prototype.setLocalDescription;window.RTCPeerConnection.prototype.setLocalDescription=function(){if(!arguments.length||!arguments[0].type){return origSetLocalDescription.apply(this,arguments);}
arguments[0]=replaceExternalStreamId(this,arguments[0]);return origSetLocalDescription.apply(this,arguments);};var origLocalDescription=Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype,'localDescription');Object.defineProperty(window.RTCPeerConnection.prototype,'localDescription',{get:function get(){var description=origLocalDescription.get.apply(this);if(description.type===''){return description;}
return replaceInternalStreamId(this,description);}});window.RTCPeerConnection.prototype.removeTrack=function(sender){var _this15=this;if(this.signalingState==='closed'){throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.','InvalidStateError');}
if(!sender._pc){throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack '+'does not implement interface RTCRtpSender.','TypeError');}
var isLocal=sender._pc===this;if(!isLocal){throw new DOMException('Sender was not created by this connection.','InvalidAccessError');}
this._streams=this._streams||{};var stream=void 0;Object.keys(this._streams).forEach(function(streamid){var hasTrack=_this15._streams[streamid].getTracks().find(function(track){return sender.track===track;});if(hasTrack){stream=_this15._streams[streamid];}});if(stream){if(stream.getTracks().length===1){this.removeStream(this._reverseStreams[stream.id]);}else{stream.removeTrack(sender.track);}
this.dispatchEvent(new Event('negotiationneeded'));}};}
function shimPeerConnection(window){if(!window.RTCPeerConnection&&window.webkitRTCPeerConnection){window.RTCPeerConnection=window.webkitRTCPeerConnection;}
if(!window.RTCPeerConnection){return;}
['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);};});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);};}
function fixNegotiationNeeded(window){utils.wrapPeerConnectionEvent(window,'negotiationneeded',function(e){var pc=e.target;if(pc.signalingState!=='stable'){return;}
return e;});}},{"../utils.js":15,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetDisplayMedia=shimGetDisplayMedia;function shimGetDisplayMedia(window,getSourceId){if(window.navigator.mediaDevices&&'getDisplayMedia'in window.navigator.mediaDevices){return;}
if(!window.navigator.mediaDevices){return;}
if(typeof getSourceId!=='function'){console.error('shimGetDisplayMedia: getSourceId argument is not '+'a function');return;}
window.navigator.mediaDevices.getDisplayMedia=function(constraints){return getSourceId(constraints).then(function(sourceId){var widthSpecified=constraints.video&&constraints.video.width;var heightSpecified=constraints.video&&constraints.video.height;var frameRateSpecified=constraints.video&&constraints.video.frameRate;constraints.video={mandatory:{chromeMediaSource:'desktop',chromeMediaSourceId:sourceId,maxFrameRate:frameRateSpecified||3}};if(widthSpecified){constraints.video.mandatory.maxWidth=widthSpecified;}
if(heightSpecified){constraints.video.mandatory.maxHeight=heightSpecified;}
return window.navigator.mediaDevices.getUserMedia(constraints);});};}},{}],5:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};exports.shimGetUserMedia=shimGetUserMedia;var _utils=require('../utils.js');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
var logging=utils.log;function shimGetUserMedia(window){var navigator=window&&window.navigator;if(!navigator.mediaDevices){return;}
var browserDetails=utils.detectBrowser(window);var constraintsToChrome_=function constraintsToChrome_(c){if((typeof c==='undefined'?'undefined':_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 oldname_(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];}});}});if(c.advanced){cc.optional=(cc.optional||[]).concat(c.advanced);}
return cc;};var shimConstraints_=function shimConstraints_(constraints,func){if(browserDetails.version>=61){return func(constraints);}
constraints=JSON.parse(JSON.stringify(constraints));if(constraints&&_typeof(constraints.audio)==='object'){var remap=function remap(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'){var face=constraints.video.facingMode;face=face&&((typeof face==='undefined'?'undefined':_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=void 0;if(face.exact==='environment'||face.ideal==='environment'){matches=['back','rear'];}else if(face.exact==='user'||face.ideal==='user'){matches=['front'];}
if(matches){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().includes(match);});});if(!dev&&devices.length&&matches.includes('back')){dev=devices[devices.length-1];}
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);});}}
constraints.video=constraintsToChrome_(constraints.video);}
logging('chrome: '+JSON.stringify(constraints));return func(constraints);};var shimError_=function shimError_(e){if(browserDetails.version>=64){return e;}
return{name:{PermissionDeniedError:'NotAllowedError',PermissionDismissedError:'NotAllowedError',InvalidStateError:'NotAllowedError',DevicesNotFoundError:'NotFoundError',ConstraintNotSatisfiedError:'OverconstrainedError',TrackStartError:'NotReadableError',MediaDeviceFailedDueToShutdown:'NotAllowedError',MediaDeviceKillSwitchOn:'NotAllowedError',TabCaptureError:'AbortError',ScreenCaptureError:'AbortError',DeviceCaptureError:'AbortError'}[e.name]||e.name,message:e.message,constraint:e.constraint||e.constraintName,toString:function toString(){return this.name+(this.message&&': ')+this.message;}};};var getUserMedia_=function getUserMedia_(constraints,onSuccess,onError){shimConstraints_(constraints,function(c){navigator.webkitGetUserMedia(c,onSuccess,function(e){if(onError){onError(shimError_(e));}});});};navigator.getUserMedia=getUserMedia_.bind(navigator);if(navigator.mediaDevices.getUserMedia){var origGetUserMedia=navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);navigator.mediaDevices.getUserMedia=function(cs){return shimConstraints_(cs,function(c){return origGetUserMedia(c).then(function(stream){if(c.audio&&!stream.getAudioTracks().length||c.video&&!stream.getVideoTracks().length){stream.getTracks().forEach(function(track){track.stop();});throw new DOMException('','NotFoundError');}
return stream;},function(e){return Promise.reject(shimError_(e));});});};}}},{"../utils.js":15}],6:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};exports.shimRTCIceCandidate=shimRTCIceCandidate;exports.shimMaxMessageSize=shimMaxMessageSize;exports.shimSendThrowTypeError=shimSendThrowTypeError;exports.shimConnectionState=shimConnectionState;exports.removeAllowExtmapMixed=removeAllowExtmapMixed;var _sdp=require('sdp');var _sdp2=_interopRequireDefault(_sdp);var _utils=require('./utils');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}
function shimRTCIceCandidate(window){if(!window.RTCIceCandidate||window.RTCIceCandidate&&'foundation'in window.RTCIceCandidate.prototype){return;}
var NativeRTCIceCandidate=window.RTCIceCandidate;window.RTCIceCandidate=function(args){if((typeof args==='undefined'?'undefined':_typeof(args))==='object'&&args.candidate&&args.candidate.indexOf('a=')===0){args=JSON.parse(JSON.stringify(args));args.candidate=args.candidate.substr(2);}
if(args.candidate&&args.candidate.length){var nativeCandidate=new NativeRTCIceCandidate(args);var parsedCandidate=_sdp2.default.parseCandidate(args.candidate);var augmentedCandidate=Object.assign(nativeCandidate,parsedCandidate);augmentedCandidate.toJSON=function(){return{candidate:augmentedCandidate.candidate,sdpMid:augmentedCandidate.sdpMid,sdpMLineIndex:augmentedCandidate.sdpMLineIndex,usernameFragment:augmentedCandidate.usernameFragment};};return augmentedCandidate;}
return new NativeRTCIceCandidate(args);};window.RTCIceCandidate.prototype=NativeRTCIceCandidate.prototype;utils.wrapPeerConnectionEvent(window,'icecandidate',function(e){if(e.candidate){Object.defineProperty(e,'candidate',{value:new window.RTCIceCandidate(e.candidate),writable:'false'});}
return e;});}
function shimMaxMessageSize(window){if(window.RTCSctpTransport||!window.RTCPeerConnection){return;}
var browserDetails=utils.detectBrowser(window);if(!('sctp'in window.RTCPeerConnection.prototype)){Object.defineProperty(window.RTCPeerConnection.prototype,'sctp',{get:function get(){return typeof this._sctp==='undefined'?null:this._sctp;}});}
var sctpInDescription=function sctpInDescription(description){if(!description||!description.sdp){return false;}
var sections=_sdp2.default.splitSections(description.sdp);sections.shift();return sections.some(function(mediaSection){var mLine=_sdp2.default.parseMLine(mediaSection);return mLine&&mLine.kind==='application'&&mLine.protocol.indexOf('SCTP')!==-1;});};var getRemoteFirefoxVersion=function getRemoteFirefoxVersion(description){var match=description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(match===null||match.length<2){return-1;}
var version=parseInt(match[1],10);return version!==version?-1:version;};var getCanSendMaxMessageSize=function getCanSendMaxMessageSize(remoteIsFirefox){var canSendMaxMessageSize=65536;if(browserDetails.browser==='firefox'){if(browserDetails.version<57){if(remoteIsFirefox===-1){canSendMaxMessageSize=16384;}else{canSendMaxMessageSize=2147483637;}}else if(browserDetails.version<60){canSendMaxMessageSize=browserDetails.version===57?65535:65536;}else{canSendMaxMessageSize=2147483637;}}
return canSendMaxMessageSize;};var getMaxMessageSize=function getMaxMessageSize(description,remoteIsFirefox){var maxMessageSize=65536;if(browserDetails.browser==='firefox'&&browserDetails.version===57){maxMessageSize=65535;}
var match=_sdp2.default.matchPrefix(description.sdp,'a=max-message-size:');if(match.length>0){maxMessageSize=parseInt(match[0].substr(19),10);}else if(browserDetails.browser==='firefox'&&remoteIsFirefox!==-1){maxMessageSize=2147483637;}
return maxMessageSize;};var origSetRemoteDescription=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(){this._sctp=null;if(sctpInDescription(arguments[0])){var isFirefox=getRemoteFirefoxVersion(arguments[0]);var canSendMMS=getCanSendMaxMessageSize(isFirefox);var remoteMMS=getMaxMessageSize(arguments[0],isFirefox);var maxMessageSize=void 0;if(canSendMMS===0&&remoteMMS===0){maxMessageSize=Number.POSITIVE_INFINITY;}else if(canSendMMS===0||remoteMMS===0){maxMessageSize=Math.max(canSendMMS,remoteMMS);}else{maxMessageSize=Math.min(canSendMMS,remoteMMS);}
var sctp={};Object.defineProperty(sctp,'maxMessageSize',{get:function get(){return maxMessageSize;}});this._sctp=sctp;}
return origSetRemoteDescription.apply(this,arguments);};}
function shimSendThrowTypeError(window){if(!(window.RTCPeerConnection&&'createDataChannel'in window.RTCPeerConnection.prototype)){return;}
function wrapDcSend(dc,pc){var origDataChannelSend=dc.send;dc.send=function(){var data=arguments[0];var length=data.length||data.size||data.byteLength;if(dc.readyState==='open'&&pc.sctp&&length>pc.sctp.maxMessageSize){throw new TypeError('Message too large (can send a maximum of '+pc.sctp.maxMessageSize+' bytes)');}
return origDataChannelSend.apply(dc,arguments);};}
var origCreateDataChannel=window.RTCPeerConnection.prototype.createDataChannel;window.RTCPeerConnection.prototype.createDataChannel=function(){var dataChannel=origCreateDataChannel.apply(this,arguments);wrapDcSend(dataChannel,this);return dataChannel;};utils.wrapPeerConnectionEvent(window,'datachannel',function(e){wrapDcSend(e.channel,e.target);return e;});}
function shimConnectionState(window){if(!window.RTCPeerConnection||'connectionState'in window.RTCPeerConnection.prototype){return;}
var proto=window.RTCPeerConnection.prototype;Object.defineProperty(proto,'connectionState',{get:function get(){return{completed:'connected',checking:'connecting'}[this.iceConnectionState]||this.iceConnectionState;},enumerable:true,configurable:true});Object.defineProperty(proto,'onconnectionstatechange',{get:function get(){return this._onconnectionstatechange||null;},set:function set(cb){if(this._onconnectionstatechange){this.removeEventListener('connectionstatechange',this._onconnectionstatechange);delete this._onconnectionstatechange;}
if(cb){this.addEventListener('connectionstatechange',this._onconnectionstatechange=cb);}},enumerable:true,configurable:true});['setLocalDescription','setRemoteDescription'].forEach(function(method){var origMethod=proto[method];proto[method]=function(){if(!this._connectionstatechangepoly){this._connectionstatechangepoly=function(e){var pc=e.target;if(pc._lastConnectionState!==pc.connectionState){pc._lastConnectionState=pc.connectionState;var newEvent=new Event('connectionstatechange',e);pc.dispatchEvent(newEvent);}
return e;};this.addEventListener('iceconnectionstatechange',this._connectionstatechangepoly);}
return origMethod.apply(this,arguments);};});}
function removeAllowExtmapMixed(window){if(!window.RTCPeerConnection){return;}
var browserDetails=utils.detectBrowser(window);if(browserDetails.browser==='chrome'&&browserDetails.version>=71){return;}
var nativeSRD=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(desc){if(desc&&desc.sdp&&desc.sdp.indexOf('\na=extmap-allow-mixed')!==-1){desc.sdp=desc.sdp.split('\n').filter(function(line){return line.trim()!=='a=extmap-allow-mixed';}).join('\n');}
return nativeSRD.apply(this,arguments);};}},{"./utils":15,"sdp":17}],7:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetDisplayMedia=exports.shimGetUserMedia=undefined;var _getusermedia=require('./getusermedia');Object.defineProperty(exports,'shimGetUserMedia',{enumerable:true,get:function get(){return _getusermedia.shimGetUserMedia;}});var _getdisplaymedia=require('./getdisplaymedia');Object.defineProperty(exports,'shimGetDisplayMedia',{enumerable:true,get:function get(){return _getdisplaymedia.shimGetDisplayMedia;}});exports.shimPeerConnection=shimPeerConnection;exports.shimReplaceTrack=shimReplaceTrack;var _utils=require('../utils');var utils=_interopRequireWildcard(_utils);var _filtericeservers=require('./filtericeservers');var _rtcpeerconnectionShim=require('rtcpeerconnection-shim');var _rtcpeerconnectionShim2=_interopRequireDefault(_rtcpeerconnectionShim);function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}
function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function shimPeerConnection(window){var browserDetails=utils.detectBrowser(window);if(window.RTCIceGatherer){if(!window.RTCIceCandidate){window.RTCIceCandidate=function(args){return args;};}
if(!window.RTCSessionDescription){window.RTCSessionDescription=function(args){return args;};}
if(browserDetails.version<15025){var origMSTEnabled=Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype,'enabled');Object.defineProperty(window.MediaStreamTrack.prototype,'enabled',{set:function set(value){origMSTEnabled.set.call(this,value);var ev=new Event('enabled');ev.enabled=value;this.dispatchEvent(ev);}});}}
if(window.RTCRtpSender&&!('dtmf'in window.RTCRtpSender.prototype)){Object.defineProperty(window.RTCRtpSender.prototype,'dtmf',{get:function get(){if(this._dtmf===undefined){if(this.track.kind==='audio'){this._dtmf=new window.RTCDtmfSender(this);}else if(this.track.kind==='video'){this._dtmf=null;}}
return this._dtmf;}});}
if(window.RTCDtmfSender&&!window.RTCDTMFSender){window.RTCDTMFSender=window.RTCDtmfSender;}
var RTCPeerConnectionShim=(0,_rtcpeerconnectionShim2.default)(window,browserDetails.version);window.RTCPeerConnection=function(config){if(config&&config.iceServers){config.iceServers=(0,_filtericeservers.filterIceServers)(config.iceServers,browserDetails.version);utils.log('ICE servers after filtering:',config.iceServers);}
return new RTCPeerConnectionShim(config);};window.RTCPeerConnection.prototype=RTCPeerConnectionShim.prototype;}
function shimReplaceTrack(window){if(window.RTCRtpSender&&!('replaceTrack'in window.RTCRtpSender.prototype)){window.RTCRtpSender.prototype.replaceTrack=window.RTCRtpSender.prototype.setTrack;}}},{"../utils":15,"./filtericeservers":8,"./getdisplaymedia":9,"./getusermedia":10,"rtcpeerconnection-shim":16}],8:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.filterIceServers=filterIceServers;var _utils=require('../utils');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
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){utils.deprecated('RTCIceServer.url','RTCIceServer.urls');}
var isString=typeof urls==='string';if(isString){urls=[urls];}
urls=urls.filter(function(url){if(url.indexOf('stun:')===0){return false;}
var validTurn=url.startsWith('turn')&&!url.startsWith('turn:[')&&url.includes('transport=udp');if(validTurn&&!hasTurn){hasTurn=true;return true;}
return validTurn&&!hasTurn;});delete server.url;server.urls=isString?urls[0]:urls;return!!urls.length;}});}},{"../utils":15}],9:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetDisplayMedia=shimGetDisplayMedia;function shimGetDisplayMedia(window){if(!('getDisplayMedia'in window.navigator)){return;}
if(!window.navigator.mediaDevices){return;}
if(window.navigator.mediaDevices&&'getDisplayMedia'in window.navigator.mediaDevices){return;}
window.navigator.mediaDevices.getDisplayMedia=window.navigator.getDisplayMedia.bind(window.navigator);}},{}],10:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetUserMedia=shimGetUserMedia;function shimGetUserMedia(window){var navigator=window&&window.navigator;var shimError_=function shimError_(e){return{name:{PermissionDeniedError:'NotAllowedError'}[e.name]||e.name,message:e.message,constraint:e.constraint,toString:function toString(){return this.name;}};};var origGetUserMedia=navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);navigator.mediaDevices.getUserMedia=function(c){return origGetUserMedia(c).catch(function(e){return Promise.reject(shimError_(e));});};}},{}],11:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetDisplayMedia=exports.shimGetUserMedia=undefined;var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};var _getusermedia=require('./getusermedia');Object.defineProperty(exports,'shimGetUserMedia',{enumerable:true,get:function get(){return _getusermedia.shimGetUserMedia;}});var _getdisplaymedia=require('./getdisplaymedia');Object.defineProperty(exports,'shimGetDisplayMedia',{enumerable:true,get:function get(){return _getdisplaymedia.shimGetDisplayMedia;}});exports.shimOnTrack=shimOnTrack;exports.shimPeerConnection=shimPeerConnection;exports.shimSenderGetStats=shimSenderGetStats;exports.shimReceiverGetStats=shimReceiverGetStats;exports.shimRemoveStream=shimRemoveStream;exports.shimRTCDataChannel=shimRTCDataChannel;var _utils=require('../utils');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function shimOnTrack(window){if((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCTrackEvent&&'receiver'in window.RTCTrackEvent.prototype&&!('transceiver'in window.RTCTrackEvent.prototype)){Object.defineProperty(window.RTCTrackEvent.prototype,'transceiver',{get:function get(){return{receiver:this.receiver};}});}}
function shimPeerConnection(window){var browserDetails=utils.detectBrowser(window);if((typeof window==='undefined'?'undefined':_typeof(window))!=='object'||!(window.RTCPeerConnection||window.mozRTCPeerConnection)){return;}
if(!window.RTCPeerConnection&&window.mozRTCPeerConnection){window.RTCPeerConnection=window.mozRTCPeerConnection;}
['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);};});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);};var modernStatsTypes={inboundrtp:'inbound-rtp',outboundrtp:'outbound-rtp',candidatepair:'candidate-pair',localcandidate:'local-candidate',remotecandidate:'remote-candidate'};var nativeGetStats=window.RTCPeerConnection.prototype.getStats;window.RTCPeerConnection.prototype.getStats=function(selector,onSucc,onErr){return nativeGetStats.apply(this,[selector||null]).then(function(stats){if(browserDetails.version<53&&!onSucc){try{stats.forEach(function(stat){stat.type=modernStatsTypes[stat.type]||stat.type;});}catch(e){if(e.name!=='TypeError'){throw e;}
stats.forEach(function(stat,i){stats.set(i,Object.assign({},stat,{type:modernStatsTypes[stat.type]||stat.type}));});}}
return stats;}).then(onSucc,onErr);};}
function shimSenderGetStats(window){if(!((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCPeerConnection&&window.RTCRtpSender)){return;}
if(window.RTCRtpSender&&'getStats'in window.RTCRtpSender.prototype){return;}
var origGetSenders=window.RTCPeerConnection.prototype.getSenders;if(origGetSenders){window.RTCPeerConnection.prototype.getSenders=function(){var _this=this;var senders=origGetSenders.apply(this,[]);senders.forEach(function(sender){return sender._pc=_this;});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(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map());};}
function shimReceiverGetStats(window){if(!((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCPeerConnection&&window.RTCRtpSender)){return;}
if(window.RTCRtpSender&&'getStats'in window.RTCRtpReceiver.prototype){return;}
var origGetReceivers=window.RTCPeerConnection.prototype.getReceivers;if(origGetReceivers){window.RTCPeerConnection.prototype.getReceivers=function(){var _this2=this;var receivers=origGetReceivers.apply(this,[]);receivers.forEach(function(receiver){return receiver._pc=_this2;});return receivers;};}
utils.wrapPeerConnectionEvent(window,'track',function(e){e.receiver._pc=e.srcElement;return e;});window.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track);};}
function shimRemoveStream(window){if(!window.RTCPeerConnection||'removeStream'in window.RTCPeerConnection.prototype){return;}
window.RTCPeerConnection.prototype.removeStream=function(stream){var _this3=this;utils.deprecated('removeStream','removeTrack');this.getSenders().forEach(function(sender){if(sender.track&&stream.getTracks().includes(sender.track)){_this3.removeTrack(sender);}});};}
function shimRTCDataChannel(window){if(window.DataChannel&&!window.RTCDataChannel){window.RTCDataChannel=window.DataChannel;}}},{"../utils":15,"./getdisplaymedia":12,"./getusermedia":13}],12:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});exports.shimGetDisplayMedia=shimGetDisplayMedia;function shimGetDisplayMedia(window,preferredMediaSource){if(window.navigator.mediaDevices&&'getDisplayMedia'in window.navigator.mediaDevices){return;}
if(!window.navigator.mediaDevices){return;}
window.navigator.mediaDevices.getDisplayMedia=function(constraints){if(!(constraints&&constraints.video)){var err=new DOMException('getDisplayMedia without video '+'constraints is undefined');err.name='NotFoundError';err.code=8;return Promise.reject(err);}
if(constraints.video===true){constraints.video={mediaSource:preferredMediaSource};}else{constraints.video.mediaSource=preferredMediaSource;}
return window.navigator.mediaDevices.getUserMedia(constraints);};}},{}],13:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};exports.shimGetUserMedia=shimGetUserMedia;var _utils=require('../utils');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function shimGetUserMedia(window){var browserDetails=utils.detectBrowser(window);var navigator=window&&window.navigator;var MediaStreamTrack=window&&window.MediaStreamTrack;navigator.getUserMedia=function(constraints,onSuccess,onError){utils.deprecated('navigator.getUserMedia','navigator.mediaDevices.getUserMedia');navigator.mediaDevices.getUserMedia(constraints).then(onSuccess,onError);};if(!(browserDetails.version>55&&'autoGainControl'in navigator.mediaDevices.getSupportedConstraints())){var remap=function remap(obj,a,b){if(a in obj&&!(b in obj)){obj[b]=obj[a];delete obj[a];}};var nativeGetUserMedia=navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);navigator.mediaDevices.getUserMedia=function(c){if((typeof c==='undefined'?'undefined':_typeof(c))==='object'&&_typeof(c.audio)==='object'){c=JSON.parse(JSON.stringify(c));remap(c.audio,'autoGainControl','mozAutoGainControl');remap(c.audio,'noiseSuppression','mozNoiseSuppression');}
return nativeGetUserMedia(c);};if(MediaStreamTrack&&MediaStreamTrack.prototype.getSettings){var nativeGetSettings=MediaStreamTrack.prototype.getSettings;MediaStreamTrack.prototype.getSettings=function(){var obj=nativeGetSettings.apply(this,arguments);remap(obj,'mozAutoGainControl','autoGainControl');remap(obj,'mozNoiseSuppression','noiseSuppression');return obj;};}
if(MediaStreamTrack&&MediaStreamTrack.prototype.applyConstraints){var nativeApplyConstraints=MediaStreamTrack.prototype.applyConstraints;MediaStreamTrack.prototype.applyConstraints=function(c){if(this.kind==='audio'&&(typeof c==='undefined'?'undefined':_typeof(c))==='object'){c=JSON.parse(JSON.stringify(c));remap(c,'autoGainControl','mozAutoGainControl');remap(c,'noiseSuppression','mozNoiseSuppression');}
return nativeApplyConstraints.apply(this,[c]);};}}}},{"../utils":15}],14:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};exports.shimLocalStreamsAPI=shimLocalStreamsAPI;exports.shimRemoteStreamsAPI=shimRemoteStreamsAPI;exports.shimCallbacksAPI=shimCallbacksAPI;exports.shimGetUserMedia=shimGetUserMedia;exports.shimConstraints=shimConstraints;exports.shimRTCIceServerUrls=shimRTCIceServerUrls;exports.shimTrackEventTransceiver=shimTrackEventTransceiver;exports.shimCreateOfferLegacy=shimCreateOfferLegacy;var _utils=require('../utils');var utils=_interopRequireWildcard(_utils);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj;}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key];}}newObj.default=obj;return newObj;}}
function shimLocalStreamsAPI(window){if((typeof window==='undefined'?'undefined':_typeof(window))!=='object'||!window.RTCPeerConnection){return;}
if(!('getLocalStreams'in window.RTCPeerConnection.prototype)){window.RTCPeerConnection.prototype.getLocalStreams=function(){if(!this._localStreams){this._localStreams=[];}
return this._localStreams;};}
if(!('addStream'in window.RTCPeerConnection.prototype)){var _addTrack=window.RTCPeerConnection.prototype.addTrack;window.RTCPeerConnection.prototype.addStream=function(stream){var _this=this;if(!this._localStreams){this._localStreams=[];}
if(!this._localStreams.includes(stream)){this._localStreams.push(stream);}
stream.getTracks().forEach(function(track){return _addTrack.call(_this,track,stream);});};window.RTCPeerConnection.prototype.addTrack=function(track,stream){if(stream){if(!this._localStreams){this._localStreams=[stream];}else if(!this._localStreams.includes(stream)){this._localStreams.push(stream);}}
return _addTrack.call(this,track,stream);};}
if(!('removeStream'in window.RTCPeerConnection.prototype)){window.RTCPeerConnection.prototype.removeStream=function(stream){var _this2=this;if(!this._localStreams){this._localStreams=[];}
var index=this._localStreams.indexOf(stream);if(index===-1){return;}
this._localStreams.splice(index,1);var tracks=stream.getTracks();this.getSenders().forEach(function(sender){if(tracks.includes(sender.track)){_this2.removeTrack(sender);}});};}}
function shimRemoteStreamsAPI(window){if((typeof window==='undefined'?'undefined':_typeof(window))!=='object'||!window.RTCPeerConnection){return;}
if(!('getRemoteStreams'in window.RTCPeerConnection.prototype)){window.RTCPeerConnection.prototype.getRemoteStreams=function(){return this._remoteStreams?this._remoteStreams:[];};}
if(!('onaddstream'in window.RTCPeerConnection.prototype)){Object.defineProperty(window.RTCPeerConnection.prototype,'onaddstream',{get:function get(){return this._onaddstream;},set:function set(f){var _this3=this;if(this._onaddstream){this.removeEventListener('addstream',this._onaddstream);this.removeEventListener('track',this._onaddstreampoly);}
this.addEventListener('addstream',this._onaddstream=f);this.addEventListener('track',this._onaddstreampoly=function(e){e.streams.forEach(function(stream){if(!_this3._remoteStreams){_this3._remoteStreams=[];}
if(_this3._remoteStreams.includes(stream)){return;}
_this3._remoteStreams.push(stream);var event=new Event('addstream');event.stream=stream;_this3.dispatchEvent(event);});});}});var origSetRemoteDescription=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(){var pc=this;if(!this._onaddstreampoly){this.addEventListener('track',this._onaddstreampoly=function(e){e.streams.forEach(function(stream){if(!pc._remoteStreams){pc._remoteStreams=[];}
if(pc._remoteStreams.indexOf(stream)>=0){return;}
pc._remoteStreams.push(stream);var event=new Event('addstream');event.stream=stream;pc.dispatchEvent(event);});});}
return origSetRemoteDescription.apply(pc,arguments);};}}
function shimCallbacksAPI(window){if((typeof window==='undefined'?'undefined':_typeof(window))!=='object'||!window.RTCPeerConnection){return;}
var prototype=window.RTCPeerConnection.prototype;var createOffer=prototype.createOffer;var createAnswer=prototype.createAnswer;var setLocalDescription=prototype.setLocalDescription;var setRemoteDescription=prototype.setRemoteDescription;var addIceCandidate=prototype.addIceCandidate;prototype.createOffer=function(successCallback,failureCallback){var options=arguments.length>=2?arguments[2]:arguments[0];var promise=createOffer.apply(this,[options]);if(!failureCallback){return promise;}
promise.then(successCallback,failureCallback);return Promise.resolve();};prototype.createAnswer=function(successCallback,failureCallback){var options=arguments.length>=2?arguments[2]:arguments[0];var promise=createAnswer.apply(this,[options]);if(!failureCallback){return promise;}
promise.then(successCallback,failureCallback);return Promise.resolve();};var withCallback=function withCallback(description,successCallback,failureCallback){var promise=setLocalDescription.apply(this,[description]);if(!failureCallback){return promise;}
promise.then(successCallback,failureCallback);return Promise.resolve();};prototype.setLocalDescription=withCallback;withCallback=function withCallback(description,successCallback,failureCallback){var promise=setRemoteDescription.apply(this,[description]);if(!failureCallback){return promise;}
promise.then(successCallback,failureCallback);return Promise.resolve();};prototype.setRemoteDescription=withCallback;withCallback=function withCallback(candidate,successCallback,failureCallback){var promise=addIceCandidate.apply(this,[candidate]);if(!failureCallback){return promise;}
promise.then(successCallback,failureCallback);return Promise.resolve();};prototype.addIceCandidate=withCallback;}
function shimGetUserMedia(window){var navigator=window&&window.navigator;if(navigator.mediaDevices&&navigator.mediaDevices.getUserMedia){var mediaDevices=navigator.mediaDevices;var _getUserMedia=mediaDevices.getUserMedia.bind(mediaDevices);navigator.mediaDevices.getUserMedia=function(constraints){return _getUserMedia(shimConstraints(constraints));};}
if(!navigator.getUserMedia&&navigator.mediaDevices&&navigator.mediaDevices.getUserMedia){navigator.getUserMedia=function(constraints,cb,errcb){navigator.mediaDevices.getUserMedia(constraints).then(cb,errcb);}.bind(navigator);}}
function shimConstraints(constraints){if(constraints&&constraints.video!==undefined){return Object.assign({},constraints,{video:utils.compactObject(constraints.video)});}
return constraints;}
function shimRTCIceServerUrls(window){var OrigPeerConnection=window.RTCPeerConnection;window.RTCPeerConnection=function(pcConfig,pcConstraints){if(pcConfig&&pcConfig.iceServers){var newIceServers=[];for(var i=0;i<pcConfig.iceServers.length;i++){var server=pcConfig.iceServers[i];if(!server.hasOwnProperty('urls')&&server.hasOwnProperty('url')){utils.deprecated('RTCIceServer.url','RTCIceServer.urls');server=JSON.parse(JSON.stringify(server));server.urls=server.url;delete server.url;newIceServers.push(server);}else{newIceServers.push(pcConfig.iceServers[i]);}}
pcConfig.iceServers=newIceServers;}
return new OrigPeerConnection(pcConfig,pcConstraints);};window.RTCPeerConnection.prototype=OrigPeerConnection.prototype;if('generateCertificate'in window.RTCPeerConnection){Object.defineProperty(window.RTCPeerConnection,'generateCertificate',{get:function get(){return OrigPeerConnection.generateCertificate;}});}}
function shimTrackEventTransceiver(window){if((typeof window==='undefined'?'undefined':_typeof(window))==='object'&&window.RTCPeerConnection&&'receiver'in window.RTCTrackEvent.prototype&&!window.RTCTransceiver){Object.defineProperty(window.RTCTrackEvent.prototype,'transceiver',{get:function get(){return{receiver:this.receiver};}});}}
function shimCreateOfferLegacy(window){var origCreateOffer=window.RTCPeerConnection.prototype.createOffer;window.RTCPeerConnection.prototype.createOffer=function(offerOptions){if(offerOptions){if(typeof offerOptions.offerToReceiveAudio!=='undefined'){offerOptions.offerToReceiveAudio=!!offerOptions.offerToReceiveAudio;}
var audioTransceiver=this.getTransceivers().find(function(transceiver){return transceiver.receiver.track.kind==='audio';});if(offerOptions.offerToReceiveAudio===false&&audioTransceiver){if(audioTransceiver.direction==='sendrecv'){if(audioTransceiver.setDirection){audioTransceiver.setDirection('sendonly');}else{audioTransceiver.direction='sendonly';}}else if(audioTransceiver.direction==='recvonly'){if(audioTransceiver.setDirection){audioTransceiver.setDirection('inactive');}else{audioTransceiver.direction='inactive';}}}else if(offerOptions.offerToReceiveAudio===true&&!audioTransceiver){this.addTransceiver('audio');}
if(typeof offerOptions.offerToReceiveVideo!=='undefined'){offerOptions.offerToReceiveVideo=!!offerOptions.offerToReceiveVideo;}
var videoTransceiver=this.getTransceivers().find(function(transceiver){return transceiver.receiver.track.kind==='video';});if(offerOptions.offerToReceiveVideo===false&&videoTransceiver){if(videoTransceiver.direction==='sendrecv'){if(videoTransceiver.setDirection){videoTransceiver.setDirection('sendonly');}else{videoTransceiver.direction='sendonly';}}else if(videoTransceiver.direction==='recvonly'){if(videoTransceiver.setDirection){videoTransceiver.setDirection('inactive');}else{videoTransceiver.direction='inactive';}}}else if(offerOptions.offerToReceiveVideo===true&&!videoTransceiver){this.addTransceiver('video');}}
return origCreateOffer.apply(this,arguments);};}},{"../utils":15}],15:[function(require,module,exports){'use strict';Object.defineProperty(exports,"__esModule",{value:true});var _typeof=typeof Symbol==="function"&&typeof Symbol.iterator==="symbol"?function(obj){return typeof obj;}:function(obj){return obj&&typeof Symbol==="function"&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj;};exports.extractVersion=extractVersion;exports.wrapPeerConnectionEvent=wrapPeerConnectionEvent;exports.disableLog=disableLog;exports.disableWarnings=disableWarnings;exports.log=log;exports.deprecated=deprecated;exports.detectBrowser=detectBrowser;exports.compactObject=compactObject;exports.walkStats=walkStats;exports.filterStats=filterStats;function _defineProperty(obj,key,value){if(key in obj){Object.defineProperty(obj,key,{value:value,enumerable:true,configurable:true,writable:true});}else{obj[key]=value;}return obj;}
var logDisabled_=true;var deprecationWarnings_=true;function extractVersion(uastring,expr,pos){var match=uastring.match(expr);return match&&match.length>=pos&&parseInt(match[pos],10);}
function wrapPeerConnectionEvent(window,eventNameToWrap,wrapper){if(!window.RTCPeerConnection){return;}
var proto=window.RTCPeerConnection.prototype;var nativeAddEventListener=proto.addEventListener;proto.addEventListener=function(nativeEventName,cb){if(nativeEventName!==eventNameToWrap){return nativeAddEventListener.apply(this,arguments);}
var wrappedCallback=function wrappedCallback(e){var modifiedEvent=wrapper(e);if(modifiedEvent){cb(modifiedEvent);}};this._eventMap=this._eventMap||{};this._eventMap[cb]=wrappedCallback;return nativeAddEventListener.apply(this,[nativeEventName,wrappedCallback]);};var nativeRemoveEventListener=proto.removeEventListener;proto.removeEventListener=function(nativeEventName,cb){if(nativeEventName!==eventNameToWrap||!this._eventMap||!this._eventMap[cb]){return nativeRemoveEventListener.apply(this,arguments);}
var unwrappedCb=this._eventMap[cb];delete this._eventMap[cb];return nativeRemoveEventListener.apply(this,[nativeEventName,unwrappedCb]);};Object.defineProperty(proto,'on'+eventNameToWrap,{get:function get(){return this['_on'+eventNameToWrap];},set:function set(cb){if(this['_on'+eventNameToWrap]){this.removeEventListener(eventNameToWrap,this['_on'+eventNameToWrap]);delete this['_on'+eventNameToWrap];}
if(cb){this.addEventListener(eventNameToWrap,this['_on'+eventNameToWrap]=cb);}},enumerable:true,configurable:true});}
function disableLog(bool){if(typeof bool!=='boolean'){return new Error('Argument type: '+(typeof bool==='undefined'?'undefined':_typeof(bool))+'. Please use a boolean.');}
logDisabled_=bool;return bool?'adapter.js logging disabled':'adapter.js logging enabled';}
function disableWarnings(bool){if(typeof bool!=='boolean'){return new Error('Argument type: '+(typeof bool==='undefined'?'undefined':_typeof(bool))+'. Please use a boolean.');}
deprecationWarnings_=!bool;return 'adapter.js deprecation warnings '+(bool?'disabled':'enabled');}
function log(){if((typeof window==='undefined'?'undefined':_typeof(window))==='object'){if(logDisabled_){return;}
if(typeof console!=='undefined'&&typeof console.log==='function'){console.log.apply(console,arguments);}}}
function deprecated(oldMethod,newMethod){if(!deprecationWarnings_){return;}
console.warn(oldMethod+' is deprecated, please use '+newMethod+' instead.');}
function detectBrowser(window){var navigator=window.navigator;var result={browser:null,version:null};if(typeof window==='undefined'||!window.navigator){result.browser='Not a browser.';return result;}
if(navigator.mozGetUserMedia){result.browser='firefox';result.version=extractVersion(navigator.userAgent,/Firefox\/(\d+)\./,1);}else if(navigator.webkitGetUserMedia||window.isSecureContext===false&&window.webkitRTCPeerConnection&&!window.RTCIceGatherer){result.browser='chrome';result.version=extractVersion(navigator.userAgent,/Chrom(e|ium)\/(\d+)\./,2);}else if(navigator.mediaDevices&&navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)){result.browser='edge';result.version=extractVersion(navigator.userAgent,/Edge\/(\d+).(\d+)$/,2);}else if(window.RTCPeerConnection&&navigator.userAgent.match(/AppleWebKit\/(\d+)\./)){result.browser='safari';result.version=extractVersion(navigator.userAgent,/AppleWebKit\/(\d+)\./,1);}else{result.browser='Not a supported browser.';return result;}
return result;}
function compactObject(data){if((typeof data==='undefined'?'undefined':_typeof(data))!=='object'){return data;}
return Object.keys(data).reduce(function(accumulator,key){var isObject=_typeof(data[key])==='object';var value=isObject?compactObject(data[key]):data[key];var isEmptyObject=isObject&&!Object.keys(value).length;if(value===undefined||isEmptyObject){return accumulator;}
return Object.assign(accumulator,_defineProperty({},key,value));},{});}
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);});}});}
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;}},{}],16:[function(require,module,exports){'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;}
function writeMediaSection(transceiver,caps,type,stream,dtlsRole){var sdp=SDPUtils.writeRtpDescription(transceiver.kind,caps);sdp+=SDPUtils.writeIceParameters(transceiver.iceGatherer.getLocalParameters());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;var msid='msid:'+(stream?stream.id:'-')+' '+
trackId+'\r\n';sdp+='a='+msid;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';}}
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;}
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;}});}
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){if(!rtxCapabilityMatches(lCodec,rCodec,localCapabilities.codecs,remoteCapabilities.codecs)){continue;}}
rCodec=JSON.parse(JSON.stringify(rCodec));rCodec.numChannels=Math.min(lCodec.numChannels,rCodec.numChannels);commonCapabilities.codecs.push(rCodec);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;});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;}}});return commonCapabilities;}
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;}
function maybeAddCandidate(iceTransport,candidate){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;e.code={NotSupportedError:9,InvalidStateError:11,InvalidAccessError:15,TypeError:undefined,OperationError:undefined}[name];return e;}
module.exports=function(window,edgeVersion){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;this.localStreams=[];this.remoteStreams=[];this._localDescription=null;this._remoteDescription=null;this.signalingState='stable';this.iceConnectionState='new';this.connectionState='new';this.iceGatheringState='new';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;}
switch(config.bundlePolicy){case 'balanced':case 'max-compat':case 'max-bundle':break;default:config.bundlePolicy='balanced';break;}
config.iceServers=filterIceServers(config.iceServers||[],edgeVersion);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;}
this._config=config;this.transceivers=[];this._sdpSessionId=SDPUtils.generateSessionId();this._sdpSessionVersion=0;this._dtlsRole=undefined;this._isClosed=false;};Object.defineProperty(RTCPeerConnection.prototype,'localDescription',{configurable:true,get:function(){return this._localDescription;}});Object.defineProperty(RTCPeerConnection.prototype,'remoteDescription',{configurable:true,get:function(){return this._remoteDescription;}});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._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;};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;}
if(!doNotAdd){this.transceivers.push(transceiver);}
return transceiver;};RTCPeerConnection.prototype.addTrack=function(track,stream){if(this._isClosed){throw makeError('InvalidStateError','Attempted to call addTrack on a closed peerconnection.');}
var alreadyExists=this.transceivers.find(function(s){return s.track===track;});if(alreadyExists){throw makeError('InvalidAccessError','Track already exists.');}
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);}
this._maybeFireNegotiationNeeded();if(this.localStreams.indexOf(stream)===-1){this.localStreams.push(stream);}
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{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);});}};RTCPeerConnection.prototype.removeTrack=function(sender){if(this._isClosed){throw makeError('InvalidStateError','Attempted to call removeTrack on a closed peerconnection.');}
if(!(sender instanceof window.RTCRtpSender)){throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack '+
'does not implement interface RTCRtpSender.');}
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;transceiver.rtpSender.stop();transceiver.rtpSender=null;transceiver.track=null;transceiver.stream=null;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._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);}});};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;});};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;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;};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){return;}
var event=new Event('icecandidate');event.candidate={sdpMid:mid,sdpMLineIndex:sdpMLineIndex};var cand=evt.candidate;var end=!cand||Object.keys(cand).length===0;if(end){if(iceGatherer.state==='new'||iceGatherer.state==='gathering'){iceGatherer.state='completed';}}else{if(iceGatherer.state==='new'){iceGatherer.state='gathering';}
cand.component=1;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 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();}
if(!end){pc._dispatchEvent('icecandidate',event);}
if(complete){pc._dispatchEvent('icecandidate',new Event('icecandidate'));pc.iceGatheringState='complete';pc._emitGatheringStateChange();}};window.setTimeout(function(){bufferedCandidateEvents.forEach(function(e){iceGatherer.onlocalcandidate(e);});},0);};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(){Object.defineProperty(dtlsTransport,'state',{value:'failed',writable:true});pc._updateConnectionState();};return{iceTransport:iceTransport,dtlsTransport:dtlsTransport};};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;}};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){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);}};RTCPeerConnection.prototype.setLocalDescription=function(description){var pc=this;if(['offer','answer'].indexOf(description.type)===-1){return Promise.reject(makeError('TypeError','Unsupported type "'+description.type+'"'));}
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'){sections=SDPUtils.splitSections(description.sdp);sessionpart=sections.shift();sections.forEach(function(mediaSection,sdpMLineIndex){var caps=SDPUtils.parseRtpParameters(mediaSection);pc.transceivers[sdpMLineIndex].localCapabilities=caps;});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;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);}}
var params=getCommonCapabilities(localCapabilities,remoteCapabilities);pc._transceive(transceiver,params.codecs.length>0,false);}});}
pc._localDescription={type:description.type,sdp:description.sdp};if(description.type==='offer'){pc._updateSignalingState('have-local-offer');}else{pc._updateSignalingState('stable');}
return Promise.resolve();};RTCPeerConnection.prototype.setRemoteDescription=function(description){var pc=this;if(['offer','answer'].indexOf(description.type)===-1){return Promise.reject(makeError('TypeError','Unsupported type "'+description.type+'"'));}
if(!isActionAllowedInSignalingState('setRemoteDescription',description.type,pc.signalingState)||pc._isClosed){return Promise.reject(makeError('InvalidStateError','Can not set remote '+description.type+
' in state '+pc.signalingState));}
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;}
sections.forEach(function(mediaSection,sdpMLineIndex){var lines=SDPUtils.splitLines(mediaSection);var kind=SDPUtils.getKind(mediaSection);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();if(rejected||(kind==='application'&&(protocol==='DTLS/SCTP'||protocol==='UDP/DTLS/SCTP'))){pc.transceivers[sdpMLineIndex]={mid:mid,kind:kind,protocol:protocol,rejected:true};return;}
if(!rejected&&pc.transceivers[sdpMLineIndex]&&pc.transceivers[sdpMLineIndex].rejected){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;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;});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(cands.length&&transceiver.iceTransport.state==='new'){if(isComplete&&(!usingBundle||sdpMLineIndex===0)){transceiver.iceTransport.setRemoteCandidates(cands);}else{cands.forEach(function(candidate){maybeAddCandidate(transceiver.iceTransport,candidate);});}}
localCapabilities=window.RTCRtpReceiver.getCapabilities(kind);if(edgeVersion<15019){localCapabilities.codecs=localCapabilities.codecs.filter(function(codec){return codec.name!=='rtx';});}
sendEncodingParameters=transceiver.sendEncodingParameters||[{ssrc:(2*sdpMLineIndex+2)*1001}];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;if(remoteMsid&&remoteMsid.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;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);}}
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');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{delete transceiver.rtpReceiver;}}});if(pc._dtlsRole===undefined){pc._dtlsRole=description.type==='offer'?'active':'passive';}
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]);});}});receiverList.forEach(function(item){if(item[2]){return;}
fireAddTrack(pc,item[0],item[1],[]);});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){if(transceiver.iceTransport){transceiver.iceTransport.stop();}
if(transceiver.dtlsTransport){transceiver.dtlsTransport.stop();}
if(transceiver.rtpSender){transceiver.rtpSender.stop();}
if(transceiver.rtpReceiver){transceiver.rtpReceiver.stop();}});this._isClosed=true;this._updateSignalingState('closed');};RTCPeerConnection.prototype._updateSignalingState=function(newState){this.signalingState=newState;var event=new Event('signalingstatechange');this._dispatchEvent('signalingstatechange',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);};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){if(transceiver.iceTransport&&!transceiver.rejected){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';}
if(newState!==this.iceConnectionState){this.iceConnectionState=newState;var event=new Event('iceconnectionstatechange');this._dispatchEvent('iceconnectionstatechange',event);}};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){if(transceiver.iceTransport&&transceiver.dtlsTransport&&!transceiver.rejected){states[transceiver.iceTransport.state]++;states[transceiver.dtlsTransport.state]++;}});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;var offerOptions=arguments[0];if(offerOptions){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;}}
if(offerOptions.offerToReceiveVideo!==undefined){if(offerOptions.offerToReceiveVideo===true){numVideoTracks=1;}else if(offerOptions.offerToReceiveVideo===false){numVideoTracks=0;}else{numVideoTracks=offerOptions.offerToReceiveVideo;}}}
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;}}});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){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);if(edgeVersion<15019){localCapabilities.codecs=localCapabilities.codecs.filter(function(codec){return codec.name!=='rtx';});}
localCapabilities.codecs.forEach(function(codec){if(codec.name==='H264'&&codec.parameters['level-asymmetry-allowed']===undefined){codec.parameters['level-asymmetry-allowed']='1';}
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;}});}});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;}});});var sendEncodingParameters=transceiver.sendEncodingParameters||[{ssrc:(2*sdpMLineIndex+1)*1001}];if(track){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;});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'){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;}
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){if(edgeVersion>=15019&&transceiver.kind==='video'&&!transceiver.sendEncodingParameters[0].rtx){transceiver.sendEncodingParameters[0].rtx={ssrc:transceiver.sendEncodingParameters[0].ssrc+1};}}}
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'));}
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):{};if(cand.protocol==='tcp'&&(cand.port===0||cand.port===9)){return resolve();}
if(cand.component&&cand.component!==1){return resolve();}
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'));}}
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;}});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;});};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;});};}});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'){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'){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'].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);};});return RTCPeerConnection;};},{"sdp":17}],17:[function(require,module,exports){'use strict';var SDPUtils={};SDPUtils.generateIdentifier=function(){return Math.random().toString(36).substr(2,10);};SDPUtils.localCName=SDPUtils.generateIdentifier();SDPUtils.splitLines=function(blob){return blob.trim().split('\n').map(function(line){return line.trim();});};SDPUtils.splitSections=function(blob){var parts=blob.split('\nm=');return parts.map(function(part,index){return(index>0?'m='+part:part).trim()+'\r\n';});};SDPUtils.getDescription=function(blob){var sections=SDPUtils.splitSections(blob);return sections&&sections[0];};SDPUtils.getMediaSections=function(blob){var sections=SDPUtils.splitSections(blob);sections.shift();return sections;};SDPUtils.matchPrefix=function(blob,prefix){return SDPUtils.splitLines(blob).filter(function(line){return line.indexOf(prefix)===0;});};SDPUtils.parseCandidate=function(line){var parts;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],address:parts[4],port:parseInt(parts[5],10),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];candidate.usernameFragment=parts[i+1];break;default:candidate[parts[i]]=parts[i+1];break;}}
return candidate;};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);}
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(' ');};SDPUtils.parseIceOptions=function(line){return line.substr(14).split(' ');};SDPUtils.parseRtpMap=function(line){var parts=line.substr(9).split(' ');var parsed={payloadType:parseInt(parts.shift(),10)};parts=parts[0].split('/');parsed.name=parts[0];parsed.clockRate=parseInt(parts[1],10);parsed.channels=parts.length===3?parseInt(parts[2],10):1;parsed.numChannels=parsed.channels;return parsed;};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';};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]};};SDPUtils.writeExtmap=function(headerExtension){return 'a=extmap:'+(headerExtension.id||headerExtension.preferredId)+
(headerExtension.direction&&headerExtension.direction!=='sendrecv'?'/'+headerExtension.direction:'')+
' '+headerExtension.uri+'\r\n';};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;};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);}});line+='a=fmtp:'+pt+' '+params.join(';')+'\r\n';}
return line;};SDPUtils.parseRtcpFb=function(line){var parts=line.substr(line.indexOf(' ')+1).split(' ');return{type:parts.shift(),parameter:parts.join(' ')};};SDPUtils.writeRtcpFb=function(codec){var lines='';var pt=codec.payloadType;if(codec.preferredPayloadType!==undefined){pt=codec.preferredPayloadType;}
if(codec.rtcpFeedback&&codec.rtcpFeedback.length){codec.rtcpFeedback.forEach(function(fb){lines+='a=rtcp-fb:'+pt+' '+fb.type+
(fb.parameter&&fb.parameter.length?' '+fb.parameter:'')+
'\r\n';});}
return lines;};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);})};};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(),value:parts[1]};};SDPUtils.getDtlsParameters=function(mediaSection,sessionpart){var lines=SDPUtils.matchPrefix(mediaSection+sessionpart,'a=fingerprint:');return{role:'auto',fingerprints:lines.map(SDPUtils.parseFingerprint)};};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;};SDPUtils.getIceParameters=function(mediaSection,sessionpart){var lines=SDPUtils.splitLines(mediaSection);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;};SDPUtils.writeIceParameters=function(params){return 'a=ice-ufrag:'+params.usernameFragment+'\r\n'+
'a=ice-pwd:'+params.password+'\r\n';};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++){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+' ');codec.parameters=fmtps.length?SDPUtils.parseFmtp(fmtps[0]):{};codec.rtcpFeedback=SDPUtils.matchPrefix(mediaSection,'a=rtcp-fb:'+pt+' ').map(SDPUtils.parseRtcpFb);description.codecs.push(codec);switch(codec.name.toUpperCase()){case 'RED':case 'ULPFEC':description.fecMechanisms.push(codec.name.toUpperCase());break;default:break;}}}
SDPUtils.matchPrefix(mediaSection,'a=extmap:').forEach(function(line){description.headerExtensions.push(SDPUtils.parseExtmap(line));});return description;};SDPUtils.writeRtpDescription=function(kind,caps){var sdp='';sdp+='m='+kind+' ';sdp+=caps.codecs.length>0?'9':'0';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';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);});}
return sdp;};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;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});}
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){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;};SDPUtils.parseRtcpParameters=function(mediaSection){var rtcpParameters={};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;}
var rsize=SDPUtils.matchPrefix(mediaSection,'a=rtcp-rsize');rtcpParameters.reducedSize=rsize.length>0;rtcpParameters.compound=rsize.length===0;var mux=SDPUtils.matchPrefix(mediaSection,'a=rtcp-mux');rtcpParameters.mux=mux.length>0;return rtcpParameters;};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]};}};SDPUtils.generateSessionId=function(){return Math.random().toString().substr(2,21);};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';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);sdp+=SDPUtils.writeIceParameters(transceiver.iceGatherer.getLocalParameters());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){var msid='msid:'+stream.id+' '+
transceiver.rtpSender.track.id+'\r\n';sdp+='a='+msid;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';}}
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;};SDPUtils.getDirection=function(mediaSection,sessionpart){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:}}
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]};};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;}}
return true;};if(typeof module==='object'){module.exports=SDPUtils;}},{}]},{},[1])(1)});