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✏️ Editing: adapter.min.js

define("core/adapter",[],(function(){return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a="function"==typeof require&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,(function(e){var n=t[o][1][e];return s(n||e)}),l,l.exports,e,t,n,r)}return n[o].exports}for(var i="function"==typeof require&&require,o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){var adapter=(0,require("./adapter_factory.js").adapterFactory)({window:"undefined"==typeof window?void 0:window});module.exports=adapter},{"./adapter_factory.js":2}],2:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0}),exports.adapterFactory=function(){var _ref=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},window=_ref.window,options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{shimChrome:!0,shimFirefox:!0,shimSafari:!0},logging=utils.log,browserDetails=utils.detectBrowser(window),adapter={browserDetails:browserDetails,commonShim:commonShim,extractVersion:utils.extractVersion,disableLog:utils.disableLog,disableWarnings:utils.disableWarnings,sdp:sdp};switch(browserDetails.browser){case"chrome":if(!chromeShim||!chromeShim.shimPeerConnection||!options.shimChrome)return logging("Chrome shim is not included in this adapter release."),adapter;if(null===browserDetails.version)return logging("Chrome shim can not determine version, not shimming."),adapter;logging("adapter.js shimming chrome."),adapter.browserShim=chromeShim,commonShim.shimAddIceCandidateNullOrEmpty(window,browserDetails),chromeShim.shimGetUserMedia(window,browserDetails),chromeShim.shimMediaStream(window,browserDetails),chromeShim.shimPeerConnection(window,browserDetails),chromeShim.shimOnTrack(window,browserDetails),chromeShim.shimAddTrackRemoveTrack(window,browserDetails),chromeShim.shimGetSendersWithDtmf(window,browserDetails),chromeShim.shimGetStats(window,browserDetails),chromeShim.shimSenderReceiverGetStats(window,browserDetails),chromeShim.fixNegotiationNeeded(window,browserDetails),commonShim.shimRTCIceCandidate(window,browserDetails),commonShim.shimConnectionState(window,browserDetails),commonShim.shimMaxMessageSize(window,browserDetails),commonShim.shimSendThrowTypeError(window,browserDetails),commonShim.removeExtmapAllowMixed(window,browserDetails);break;case"firefox":if(!firefoxShim||!firefoxShim.shimPeerConnection||!options.shimFirefox)return logging("Firefox shim is not included in this adapter release."),adapter;logging("adapter.js shimming firefox."),adapter.browserShim=firefoxShim,commonShim.shimAddIceCandidateNullOrEmpty(window,browserDetails),firefoxShim.shimGetUserMedia(window,browserDetails),firefoxShim.shimPeerConnection(window,browserDetails),firefoxShim.shimOnTrack(window,browserDetails),firefoxShim.shimRemoveStream(window,browserDetails),firefoxShim.shimSenderGetStats(window,browserDetails),firefoxShim.shimReceiverGetStats(window,browserDetails),firefoxShim.shimRTCDataChannel(window,browserDetails),firefoxShim.shimAddTransceiver(window,browserDetails),firefoxShim.shimGetParameters(window,browserDetails),firefoxShim.shimCreateOffer(window,browserDetails),firefoxShim.shimCreateAnswer(window,browserDetails),commonShim.shimRTCIceCandidate(window,browserDetails),commonShim.shimConnectionState(window,browserDetails),commonShim.shimMaxMessageSize(window,browserDetails),commonShim.shimSendThrowTypeError(window,browserDetails);break;case"safari":if(!safariShim||!options.shimSafari)return logging("Safari shim is not included in this adapter release."),adapter;logging("adapter.js shimming safari."),adapter.browserShim=safariShim,commonShim.shimAddIceCandidateNullOrEmpty(window,browserDetails),safariShim.shimRTCIceServerUrls(window,browserDetails),safariShim.shimCreateOfferLegacy(window,browserDetails),safariShim.shimCallbacksAPI(window,browserDetails),safariShim.shimLocalStreamsAPI(window,browserDetails),safariShim.shimRemoteStreamsAPI(window,browserDetails),safariShim.shimTrackEventTransceiver(window,browserDetails),safariShim.shimGetUserMedia(window,browserDetails),safariShim.shimAudioContext(window,browserDetails),commonShim.shimRTCIceCandidate(window,browserDetails),commonShim.shimMaxMessageSize(window,browserDetails),commonShim.shimSendThrowTypeError(window,browserDetails),commonShim.removeExtmapAllowMixed(window,browserDetails);break;default:logging("Unsupported browser!")}return adapter};var utils=_interopRequireWildcard(require("./utils")),chromeShim=_interopRequireWildcard(require("./chrome/chrome_shim")),firefoxShim=_interopRequireWildcard(require("./firefox/firefox_shim")),safariShim=_interopRequireWildcard(require("./safari/safari_shim")),commonShim=_interopRequireWildcard(require("./common_shim")),sdp=_interopRequireWildcard(require("sdp"));function _interopRequireWildcard(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}},{"./chrome/chrome_shim":3,"./common_shim":6,"./firefox/firefox_shim":7,"./safari/safari_shim":10,"./utils":11,sdp:12}],3:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetDisplayMedia=exports.shimGetUserMedia=void 0;var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj},_getusermedia=require("./getusermedia");Object.defineProperty(exports,"shimGetUserMedia",{enumerable:!0,get:function(){return _getusermedia.shimGetUserMedia}});var _getdisplaymedia=require("./getdisplaymedia");Object.defineProperty(exports,"shimGetDisplayMedia",{enumerable:!0,get:function(){return _getdisplaymedia.shimGetDisplayMedia}}),exports.shimMediaStream=function(window){window.MediaStream=window.MediaStream||window.webkitMediaStream},exports.shimOnTrack=function(window){if("object"===(void 0===window?"undefined":_typeof(window))&&window.RTCPeerConnection&&!("ontrack"in window.RTCPeerConnection.prototype)){Object.defineProperty(window.RTCPeerConnection.prototype,"ontrack",{get:function(){return this._ontrack},set:function(f){this._ontrack&&this.removeEventListener("track",this._ontrack),this.addEventListener("track",this._ontrack=f)},enumerable:!0,configurable:!0});var origSetRemoteDescription=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(){var _this=this;return this._ontrackpoly||(this._ontrackpoly=function(e){e.stream.addEventListener("addtrack",(function(te){var receiver=void 0;receiver=window.RTCPeerConnection.prototype.getReceivers?_this.getReceivers().find((function(r){return r.track&&r.track.id===te.track.id})):{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;receiver=window.RTCPeerConnection.prototype.getReceivers?_this.getReceivers().find((function(r){return r.track&&r.track.id===track.id})):{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)),origSetRemoteDescription.apply(this,arguments)}}else utils.wrapPeerConnectionEvent(window,"track",(function(e){return e.transceiver||Object.defineProperty(e,"transceiver",{value:{receiver:e.receiver}}),e}))},exports.shimGetSendersWithDtmf=function(window){if("object"===(void 0===window?"undefined":_typeof(window))&&window.RTCPeerConnection&&!("getSenders"in window.RTCPeerConnection.prototype)&&"createDTMFSender"in window.RTCPeerConnection.prototype){var shimSenderWithDtmf=function(pc,track){return{track:track,get dtmf(){return void 0===this._dtmf&&("audio"===track.kind?this._dtmf=pc.createDTMFSender(track):this._dtmf=null),this._dtmf},_pc:pc}};if(!window.RTCPeerConnection.prototype.getSenders){window.RTCPeerConnection.prototype.getSenders=function(){return this._senders=this._senders||[],this._senders.slice()};var origAddTrack=window.RTCPeerConnection.prototype.addTrack;window.RTCPeerConnection.prototype.addTrack=function(track,stream){var sender=origAddTrack.apply(this,arguments);return sender||(sender=shimSenderWithDtmf(this,track),this._senders.push(sender)),sender};var origRemoveTrack=window.RTCPeerConnection.prototype.removeTrack;window.RTCPeerConnection.prototype.removeTrack=function(sender){origRemoveTrack.apply(this,arguments);var idx=this._senders.indexOf(sender);-1!==idx&&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}));sender&&_this3._senders.splice(_this3._senders.indexOf(sender),1)}))}}else if("object"===(void 0===window?"undefined":_typeof(window))&&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,senders=origGetSenders.apply(this,[]);return senders.forEach((function(sender){return sender._pc=_this4})),senders},Object.defineProperty(window.RTCRtpSender.prototype,"dtmf",{get:function(){return void 0===this._dtmf&&("audio"===this.track.kind?this._dtmf=this._pc.createDTMFSender(this.track):this._dtmf=null),this._dtmf}})}},exports.shimGetStats=function(window){if(!window.RTCPeerConnection)return;var origGetStats=window.RTCPeerConnection.prototype.getStats;window.RTCPeerConnection.prototype.getStats=function(){var _this5=this,_arguments=Array.prototype.slice.call(arguments),selector=_arguments[0],onSucc=_arguments[1],onErr=_arguments[2];if(arguments.length>0&&"function"==typeof selector)return origGetStats.apply(this,arguments);if(0===origGetStats.length&&(0===arguments.length||"function"!=typeof selector))return origGetStats.apply(this,[]);var fixChromeStats_=function(response){var standardReport={};return response.result().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})),standardReport},makeMapStats=function(stats){return new Map(Object.keys(stats).map((function(key){return[key,stats[key]]})))};if(arguments.length>=2){var successCallbackWrapper_=function(response){onSucc(makeMapStats(fixChromeStats_(response)))};return origGetStats.apply(this,[successCallbackWrapper_,selector])}return new Promise((function(resolve,reject){origGetStats.apply(_this5,[function(response){resolve(makeMapStats(fixChromeStats_(response)))},reject])})).then(onSucc,onErr)}},exports.shimSenderReceiverGetStats=function(window){if(!("object"===(void 0===window?"undefined":_typeof(window))&&window.RTCPeerConnection&&window.RTCRtpSender&&window.RTCRtpReceiver))return;if(!("getStats"in window.RTCRtpSender.prototype)){var origGetSenders=window.RTCPeerConnection.prototype.getSenders;origGetSenders&&(window.RTCPeerConnection.prototype.getSenders=function(){var _this6=this,senders=origGetSenders.apply(this,[]);return senders.forEach((function(sender){return sender._pc=_this6})),senders});var origAddTrack=window.RTCPeerConnection.prototype.addTrack;origAddTrack&&(window.RTCPeerConnection.prototype.addTrack=function(){var sender=origAddTrack.apply(this,arguments);return sender._pc=this,sender}),window.RTCRtpSender.prototype.getStats=function(){var sender=this;return this._pc.getStats().then((function(result){return utils.filterStats(result,sender.track,!0)}))}}if(!("getStats"in window.RTCRtpReceiver.prototype)){var origGetReceivers=window.RTCPeerConnection.prototype.getReceivers;origGetReceivers&&(window.RTCPeerConnection.prototype.getReceivers=function(){var _this7=this,receivers=origGetReceivers.apply(this,[]);return receivers.forEach((function(receiver){return receiver._pc=_this7})),receivers}),utils.wrapPeerConnectionEvent(window,"track",(function(e){return e.receiver._pc=e.srcElement,e})),window.RTCRtpReceiver.prototype.getStats=function(){var receiver=this;return this._pc.getStats().then((function(result){return utils.filterStats(result,receiver.track,!1)}))}}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],sender=void 0,receiver=void 0,err=void 0;return this.getSenders().forEach((function(s){s.track===track&&(sender?err=!0:sender=s)})),this.getReceivers().forEach((function(r){return r.track===track&&(receiver?err=!0:receiver=r),r.track===track})),err||sender&&receiver?Promise.reject(new DOMException("There are more than one sender or receiver for the track.","InvalidAccessError")):sender?sender.getStats():receiver?receiver.getStats():Promise.reject(new DOMException("There is no sender or receiver for the track.","InvalidAccessError"))}return origGetStats.apply(this,arguments)}},exports.shimAddTrackRemoveTrackWithNative=shimAddTrackRemoveTrackWithNative,exports.shimAddTrackRemoveTrack=function(window,browserDetails){if(!window.RTCPeerConnection)return;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,nativeStreams=origGetLocalStreams.apply(this);return this._reverseStreams=this._reverseStreams||{},nativeStreams.map((function(stream){return _this11._reverseStreams[stream.id]}))};var origAddStream=window.RTCPeerConnection.prototype.addStream;window.RTCPeerConnection.prototype.addStream=function(stream){var _this12=this;if(this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},stream.getTracks().forEach((function(track){if(_this12.getSenders().find((function(s){return s.track===track})))throw new DOMException("Track already exists.","InvalidAccessError")})),!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;function replaceInternalStreamId(pc,description){var sdp=description.sdp;return Object.keys(pc._reverseStreams||[]).forEach((function(internalId){var externalStream=pc._reverseStreams[internalId],internalStream=pc._streams[externalStream.id];sdp=sdp.replace(new RegExp(internalStream.id,"g"),externalStream.id)})),new RTCSessionDescription({type:description.type,sdp:sdp})}function replaceExternalStreamId(pc,description){var sdp=description.sdp;return Object.keys(pc._reverseStreams||[]).forEach((function(internalId){var externalStream=pc._reverseStreams[internalId],internalStream=pc._streams[externalStream.id];sdp=sdp.replace(new RegExp(externalStream.id,"g"),internalStream.id)})),new RTCSessionDescription({type:description.type,sdp:sdp})}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("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");var streams=[].slice.call(arguments,1);if(1!==streams.length||!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}))},["createOffer","createAnswer"].forEach((function(method){var nativeMethod=window.RTCPeerConnection.prototype[method],methodObj=_defineProperty({},method,(function(){var _this14=this,args=arguments,isLegacyCall=arguments.length&&"function"==typeof arguments[0];return isLegacyCall?nativeMethod.apply(this,[function(description){var desc=replaceInternalStreamId(_this14,description);args[0].apply(null,[desc])},function(err){args[1]&&args[1].apply(null,err)},arguments[2]]):nativeMethod.apply(this,arguments).then((function(description){return replaceInternalStreamId(_this14,description)}))}));window.RTCPeerConnection.prototype[method]=methodObj[method]}));var origSetLocalDescription=window.RTCPeerConnection.prototype.setLocalDescription;window.RTCPeerConnection.prototype.setLocalDescription=function(){return arguments.length&&arguments[0].type?(arguments[0]=replaceExternalStreamId(this,arguments[0]),origSetLocalDescription.apply(this,arguments)):origSetLocalDescription.apply(this,arguments)};var origLocalDescription=Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype,"localDescription");Object.defineProperty(window.RTCPeerConnection.prototype,"localDescription",{get:function(){var description=origLocalDescription.get.apply(this);return""===description.type?description:replaceInternalStreamId(this,description)}}),window.RTCPeerConnection.prototype.removeTrack=function(sender){var _this15=this;if("closed"===this.signalingState)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");if(!(sender._pc===this))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){_this15._streams[streamid].getTracks().find((function(track){return sender.track===track}))&&(stream=_this15._streams[streamid])})),stream&&(1===stream.getTracks().length?this.removeStream(this._reverseStreams[stream.id]):stream.removeTrack(sender.track),this.dispatchEvent(new Event("negotiationneeded")))}},exports.shimPeerConnection=function(window,browserDetails){!window.RTCPeerConnection&&window.webkitRTCPeerConnection&&(window.RTCPeerConnection=window.webkitRTCPeerConnection);if(!window.RTCPeerConnection)return;browserDetails.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach((function(method){var nativeMethod=window.RTCPeerConnection.prototype[method],methodObj=_defineProperty({},method,(function(){return arguments[0]=new("addIceCandidate"===method?window.RTCIceCandidate:window.RTCSessionDescription)(arguments[0]),nativeMethod.apply(this,arguments)}));window.RTCPeerConnection.prototype[method]=methodObj[method]}))},exports.fixNegotiationNeeded=function(window,browserDetails){utils.wrapPeerConnectionEvent(window,"negotiationneeded",(function(e){var pc=e.target;if(!(browserDetails.version<72||pc.getConfiguration&&"plan-b"===pc.getConfiguration().sdpSemantics)||"stable"===pc.signalingState)return e}))};var utils=function(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}(require("../utils.js"));function _defineProperty(obj,key,value){return key in obj?Object.defineProperty(obj,key,{value:value,enumerable:!0,configurable:!0,writable:!0}):obj[key]=value,obj}function shimAddTrackRemoveTrackWithNative(window){window.RTCPeerConnection.prototype.getLocalStreams=function(){var _this8=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},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);return this._shimmedLocalStreams[stream.id]?-1===this._shimmedLocalStreams[stream.id].indexOf(sender)&&this._shimmedLocalStreams[stream.id].push(sender):this._shimmedLocalStreams[stream.id]=[stream,sender],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){if(_this9.getSenders().find((function(s){return s.track===track})))throw new DOMException("Track already exists.","InvalidAccessError")}));var existingSenders=this.getSenders();origAddStream.apply(this,arguments);var newSenders=this.getSenders().filter((function(newSender){return-1===existingSenders.indexOf(newSender)}));this._shimmedLocalStreams[stream.id]=[stream].concat(newSenders)};var origRemoveStream=window.RTCPeerConnection.prototype.removeStream;window.RTCPeerConnection.prototype.removeStream=function(stream){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},delete this._shimmedLocalStreams[stream.id],origRemoveStream.apply(this,arguments)};var origRemoveTrack=window.RTCPeerConnection.prototype.removeTrack;window.RTCPeerConnection.prototype.removeTrack=function(sender){var _this10=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},sender&&Object.keys(this._shimmedLocalStreams).forEach((function(streamId){var idx=_this10._shimmedLocalStreams[streamId].indexOf(sender);-1!==idx&&_this10._shimmedLocalStreams[streamId].splice(idx,1),1===_this10._shimmedLocalStreams[streamId].length&&delete _this10._shimmedLocalStreams[streamId]})),origRemoveTrack.apply(this,arguments)}}},{"../utils.js":11,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetDisplayMedia=function(window,getSourceId){if(window.navigator.mediaDevices&&"getDisplayMedia"in window.navigator.mediaDevices)return;if(!window.navigator.mediaDevices)return;if("function"!=typeof getSourceId)return void console.error("shimGetDisplayMedia: getSourceId argument is not a function");window.navigator.mediaDevices.getDisplayMedia=function(constraints){return getSourceId(constraints).then((function(sourceId){var widthSpecified=constraints.video&&constraints.video.width,heightSpecified=constraints.video&&constraints.video.height,frameRateSpecified=constraints.video&&constraints.video.frameRate;return constraints.video={mandatory:{chromeMediaSource:"desktop",chromeMediaSourceId:sourceId,maxFrameRate:frameRateSpecified||3}},widthSpecified&&(constraints.video.mandatory.maxWidth=widthSpecified),heightSpecified&&(constraints.video.mandatory.maxHeight=heightSpecified),window.navigator.mediaDevices.getUserMedia(constraints)}))}}},{}],5:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0});var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};exports.shimGetUserMedia=function(window,browserDetails){var navigator=window&&window.navigator;if(!navigator.mediaDevices)return;var constraintsToChrome_=function(c){if("object"!==(void 0===c?"undefined":_typeof(c))||c.mandatory||c.optional)return c;var cc={};return Object.keys(c).forEach((function(key){if("require"!==key&&"advanced"!==key&&"mediaSource"!==key){var r="object"===_typeof(c[key])?c[key]:{ideal:c[key]};void 0!==r.exact&&"number"==typeof r.exact&&(r.min=r.max=r.exact);var oldname_=function(prefix,name){return prefix?prefix+name.charAt(0).toUpperCase()+name.slice(1):"deviceId"===name?"sourceId":name};if(void 0!==r.ideal){cc.optional=cc.optional||[];var oc={};"number"==typeof r.ideal?(oc[oldname_("min",key)]=r.ideal,cc.optional.push(oc),(oc={})[oldname_("max",key)]=r.ideal,cc.optional.push(oc)):(oc[oldname_("",key)]=r.ideal,cc.optional.push(oc))}void 0!==r.exact&&"number"!=typeof r.exact?(cc.mandatory=cc.mandatory||{},cc.mandatory[oldname_("",key)]=r.exact):["min","max"].forEach((function(mix){void 0!==r[mix]&&(cc.mandatory=cc.mandatory||{},cc.mandatory[oldname_(mix,key)]=r[mix])}))}})),c.advanced&&(cc.optional=(cc.optional||[]).concat(c.advanced)),cc},shimConstraints_=function(constraints,func){if(browserDetails.version>=61)return func(constraints);if((constraints=JSON.parse(JSON.stringify(constraints)))&&"object"===_typeof(constraints.audio)){var remap=function(obj,a,b){a in obj&&!(b in obj)&&(obj[b]=obj[a],delete obj[a])};remap((constraints=JSON.parse(JSON.stringify(constraints))).audio,"autoGainControl","googAutoGainControl"),remap(constraints.audio,"noiseSuppression","googNoiseSuppression"),constraints.audio=constraintsToChrome_(constraints.audio)}if(constraints&&"object"===_typeof(constraints.video)){var face=constraints.video.facingMode;face=face&&("object"===(void 0===face?"undefined":_typeof(face))?face:{ideal:face});var getSupportedFacingModeLies=browserDetails.version<66;if(face&&("user"===face.exact||"environment"===face.exact||"user"===face.ideal||"environment"===face.ideal)&&(!navigator.mediaDevices.getSupportedConstraints||!navigator.mediaDevices.getSupportedConstraints().facingMode||getSupportedFacingModeLies)){delete constraints.video.facingMode;var matches=void 0;if("environment"===face.exact||"environment"===face.ideal?matches=["back","rear"]:"user"!==face.exact&&"user"!==face.ideal||(matches=["front"]),matches)return navigator.mediaDevices.enumerateDevices().then((function(devices){var dev=(devices=devices.filter((function(d){return"videoinput"===d.kind}))).find((function(d){return matches.some((function(match){return d.label.toLowerCase().includes(match)}))}));return!dev&&devices.length&&matches.includes("back")&&(dev=devices[devices.length-1]),dev&&(constraints.video.deviceId=face.exact?{exact:dev.deviceId}:{ideal:dev.deviceId}),constraints.video=constraintsToChrome_(constraints.video),logging("chrome: "+JSON.stringify(constraints)),func(constraints)}))}constraints.video=constraintsToChrome_(constraints.video)}return logging("chrome: "+JSON.stringify(constraints)),func(constraints)},shimError_=function(e){return browserDetails.version>=64?e:{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(){return this.name+(this.message&&": ")+this.message}}};if(navigator.getUserMedia=function(constraints,onSuccess,onError){shimConstraints_(constraints,(function(c){navigator.webkitGetUserMedia(c,onSuccess,(function(e){onError&&onError(shimError_(e))}))}))}.bind(navigator),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)throw stream.getTracks().forEach((function(track){track.stop()})),new DOMException("","NotFoundError");return stream}),(function(e){return Promise.reject(shimError_(e))}))}))}}};var logging=function(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}(require("../utils.js")).log},{"../utils.js":11}],6:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0});var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};exports.shimRTCIceCandidate=function(window){if(!window.RTCIceCandidate||window.RTCIceCandidate&&"foundation"in window.RTCIceCandidate.prototype)return;var NativeRTCIceCandidate=window.RTCIceCandidate;window.RTCIceCandidate=function(args){if("object"===(void 0===args?"undefined":_typeof(args))&&args.candidate&&0===args.candidate.indexOf("a=")&&((args=JSON.parse(JSON.stringify(args))).candidate=args.candidate.substr(2)),args.candidate&&args.candidate.length){var nativeCandidate=new NativeRTCIceCandidate(args),parsedCandidate=_sdp2.default.parseCandidate(args.candidate),augmentedCandidate=Object.assign(nativeCandidate,parsedCandidate);return augmentedCandidate.toJSON=function(){return{candidate:augmentedCandidate.candidate,sdpMid:augmentedCandidate.sdpMid,sdpMLineIndex:augmentedCandidate.sdpMLineIndex,usernameFragment:augmentedCandidate.usernameFragment}},augmentedCandidate}return new NativeRTCIceCandidate(args)},window.RTCIceCandidate.prototype=NativeRTCIceCandidate.prototype,utils.wrapPeerConnectionEvent(window,"icecandidate",(function(e){return e.candidate&&Object.defineProperty(e,"candidate",{value:new window.RTCIceCandidate(e.candidate),writable:"false"}),e}))},exports.shimMaxMessageSize=function(window,browserDetails){if(!window.RTCPeerConnection)return;"sctp"in window.RTCPeerConnection.prototype||Object.defineProperty(window.RTCPeerConnection.prototype,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp}});var sctpInDescription=function(description){if(!description||!description.sdp)return!1;var sections=_sdp2.default.splitSections(description.sdp);return sections.shift(),sections.some((function(mediaSection){var mLine=_sdp2.default.parseMLine(mediaSection);return mLine&&"application"===mLine.kind&&-1!==mLine.protocol.indexOf("SCTP")}))},getRemoteFirefoxVersion=function(description){var match=description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(null===match||match.length<2)return-1;var version=parseInt(match[1],10);return version!=version?-1:version},getCanSendMaxMessageSize=function(remoteIsFirefox){var canSendMaxMessageSize=65536;return"firefox"===browserDetails.browser&&(canSendMaxMessageSize=browserDetails.version<57?-1===remoteIsFirefox?16384:2147483637:browserDetails.version<60?57===browserDetails.version?65535:65536:2147483637),canSendMaxMessageSize},getMaxMessageSize=function(description,remoteIsFirefox){var maxMessageSize=65536;"firefox"===browserDetails.browser&&57===browserDetails.version&&(maxMessageSize=65535);var match=_sdp2.default.matchPrefix(description.sdp,"a=max-message-size:");return match.length>0?maxMessageSize=parseInt(match[0].substr(19),10):"firefox"===browserDetails.browser&&-1!==remoteIsFirefox&&(maxMessageSize=2147483637),maxMessageSize},origSetRemoteDescription=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(){if(this._sctp=null,"chrome"===browserDetails.browser&&browserDetails.version>=76){var _getConfiguration=this.getConfiguration(),sdpSemantics=_getConfiguration.sdpSemantics;"plan-b"===sdpSemantics&&Object.defineProperty(this,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp},enumerable:!0,configurable:!0})}if(sctpInDescription(arguments[0])){var isFirefox=getRemoteFirefoxVersion(arguments[0]),canSendMMS=getCanSendMaxMessageSize(isFirefox),remoteMMS=getMaxMessageSize(arguments[0],isFirefox),maxMessageSize=void 0;maxMessageSize=0===canSendMMS&&0===remoteMMS?Number.POSITIVE_INFINITY:0===canSendMMS||0===remoteMMS?Math.max(canSendMMS,remoteMMS):Math.min(canSendMMS,remoteMMS);var sctp={};Object.defineProperty(sctp,"maxMessageSize",{get:function(){return maxMessageSize}}),this._sctp=sctp}return origSetRemoteDescription.apply(this,arguments)}},exports.shimSendThrowTypeError=function(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],length=data.length||data.size||data.byteLength;if("open"===dc.readyState&&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);return wrapDcSend(dataChannel,this),dataChannel},utils.wrapPeerConnectionEvent(window,"datachannel",(function(e){return wrapDcSend(e.channel,e.target),e}))},exports.shimConnectionState=function(window){if(!window.RTCPeerConnection||"connectionState"in window.RTCPeerConnection.prototype)return;var proto=window.RTCPeerConnection.prototype;Object.defineProperty(proto,"connectionState",{get:function(){return{completed:"connected",checking:"connecting"}[this.iceConnectionState]||this.iceConnectionState},enumerable:!0,configurable:!0}),Object.defineProperty(proto,"onconnectionstatechange",{get:function(){return this._onconnectionstatechange||null},set:function(cb){this._onconnectionstatechange&&(this.removeEventListener("connectionstatechange",this._onconnectionstatechange),delete this._onconnectionstatechange),cb&&this.addEventListener("connectionstatechange",this._onconnectionstatechange=cb)},enumerable:!0,configurable:!0}),["setLocalDescription","setRemoteDescription"].forEach((function(method){var origMethod=proto[method];proto[method]=function(){return 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)),origMethod.apply(this,arguments)}}))},exports.removeExtmapAllowMixed=function(window,browserDetails){if(!window.RTCPeerConnection)return;if("chrome"===browserDetails.browser&&browserDetails.version>=71)return;if("safari"===browserDetails.browser&&browserDetails.version>=605)return;var nativeSRD=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(desc){if(desc&&desc.sdp&&-1!==desc.sdp.indexOf("\na=extmap-allow-mixed")){var sdp=desc.sdp.split("\n").filter((function(line){return"a=extmap-allow-mixed"!==line.trim()})).join("\n");window.RTCSessionDescription&&desc instanceof window.RTCSessionDescription?arguments[0]=new window.RTCSessionDescription({type:desc.type,sdp:sdp}):desc.sdp=sdp}return nativeSRD.apply(this,arguments)}},exports.shimAddIceCandidateNullOrEmpty=function(window,browserDetails){if(!window.RTCPeerConnection||!window.RTCPeerConnection.prototype)return;var nativeAddIceCandidate=window.RTCPeerConnection.prototype.addIceCandidate;if(!nativeAddIceCandidate||0===nativeAddIceCandidate.length)return;window.RTCPeerConnection.prototype.addIceCandidate=function(){return arguments[0]?("chrome"===browserDetails.browser&&browserDetails.version<78||"firefox"===browserDetails.browser&&browserDetails.version<68||"safari"===browserDetails.browser)&&arguments[0]&&""===arguments[0].candidate?Promise.resolve():nativeAddIceCandidate.apply(this,arguments):(arguments[1]&&arguments[1].apply(null),Promise.resolve())}};var obj,_sdp=require("sdp"),_sdp2=(obj=_sdp)&&obj.__esModule?obj:{default:obj},utils=function(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}(require("./utils"))},{"./utils":11,sdp:12}],7:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetDisplayMedia=exports.shimGetUserMedia=void 0;var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj},_getusermedia=require("./getusermedia");Object.defineProperty(exports,"shimGetUserMedia",{enumerable:!0,get:function(){return _getusermedia.shimGetUserMedia}});var _getdisplaymedia=require("./getdisplaymedia");Object.defineProperty(exports,"shimGetDisplayMedia",{enumerable:!0,get:function(){return _getdisplaymedia.shimGetDisplayMedia}}),exports.shimOnTrack=function(window){"object"===(void 0===window?"undefined":_typeof(window))&&window.RTCTrackEvent&&"receiver"in window.RTCTrackEvent.prototype&&!("transceiver"in window.RTCTrackEvent.prototype)&&Object.defineProperty(window.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})},exports.shimPeerConnection=function(window,browserDetails){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection&&!window.mozRTCPeerConnection)return;!window.RTCPeerConnection&&window.mozRTCPeerConnection&&(window.RTCPeerConnection=window.mozRTCPeerConnection);browserDetails.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach((function(method){var nativeMethod=window.RTCPeerConnection.prototype[method],methodObj=function(obj,key,value){key in obj?Object.defineProperty(obj,key,{value:value,enumerable:!0,configurable:!0,writable:!0}):obj[key]=value;return obj}({},method,(function(){return arguments[0]=new("addIceCandidate"===method?window.RTCIceCandidate:window.RTCSessionDescription)(arguments[0]),nativeMethod.apply(this,arguments)}));window.RTCPeerConnection.prototype[method]=methodObj[method]}));var modernStatsTypes={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"},nativeGetStats=window.RTCPeerConnection.prototype.getStats;window.RTCPeerConnection.prototype.getStats=function(){var _arguments=Array.prototype.slice.call(arguments),selector=_arguments[0],onSucc=_arguments[1],onErr=_arguments[2];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("TypeError"!==e.name)throw e;stats.forEach((function(stat,i){stats.set(i,Object.assign({},stat,{type:modernStatsTypes[stat.type]||stat.type}))}))}return stats})).then(onSucc,onErr)}},exports.shimSenderGetStats=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection||!window.RTCRtpSender)return;if(window.RTCRtpSender&&"getStats"in window.RTCRtpSender.prototype)return;var origGetSenders=window.RTCPeerConnection.prototype.getSenders;origGetSenders&&(window.RTCPeerConnection.prototype.getSenders=function(){var _this=this,senders=origGetSenders.apply(this,[]);return senders.forEach((function(sender){return sender._pc=_this})),senders});var origAddTrack=window.RTCPeerConnection.prototype.addTrack;origAddTrack&&(window.RTCPeerConnection.prototype.addTrack=function(){var sender=origAddTrack.apply(this,arguments);return sender._pc=this,sender});window.RTCRtpSender.prototype.getStats=function(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map)}},exports.shimReceiverGetStats=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection||!window.RTCRtpSender)return;if(window.RTCRtpSender&&"getStats"in window.RTCRtpReceiver.prototype)return;var origGetReceivers=window.RTCPeerConnection.prototype.getReceivers;origGetReceivers&&(window.RTCPeerConnection.prototype.getReceivers=function(){var _this2=this,receivers=origGetReceivers.apply(this,[]);return receivers.forEach((function(receiver){return receiver._pc=_this2})),receivers});utils.wrapPeerConnectionEvent(window,"track",(function(e){return e.receiver._pc=e.srcElement,e})),window.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}},exports.shimRemoveStream=function(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){sender.track&&stream.getTracks().includes(sender.track)&&_this3.removeTrack(sender)}))}},exports.shimRTCDataChannel=function(window){window.DataChannel&&!window.RTCDataChannel&&(window.RTCDataChannel=window.DataChannel)},exports.shimAddTransceiver=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection)return;var origAddTransceiver=window.RTCPeerConnection.prototype.addTransceiver;origAddTransceiver&&(window.RTCPeerConnection.prototype.addTransceiver=function(){this.setParametersPromises=[];var initParameters=arguments[1],shouldPerformCheck=initParameters&&"sendEncodings"in initParameters;shouldPerformCheck&&initParameters.sendEncodings.forEach((function(encodingParam){if("rid"in encodingParam){if(!/^[a-z0-9]{0,16}$/i.test(encodingParam.rid))throw new TypeError("Invalid RID value provided.")}if("scaleResolutionDownBy"in encodingParam&&!(parseFloat(encodingParam.scaleResolutionDownBy)>=1))throw new RangeError("scale_resolution_down_by must be >= 1.0");if("maxFramerate"in encodingParam&&!(parseFloat(encodingParam.maxFramerate)>=0))throw new RangeError("max_framerate must be >= 0.0")}));var transceiver=origAddTransceiver.apply(this,arguments);if(shouldPerformCheck){var sender=transceiver.sender,params=sender.getParameters();(!("encodings"in params)||1===params.encodings.length&&0===Object.keys(params.encodings[0]).length)&&(params.encodings=initParameters.sendEncodings,sender.sendEncodings=initParameters.sendEncodings,this.setParametersPromises.push(sender.setParameters(params).then((function(){delete sender.sendEncodings})).catch((function(){delete sender.sendEncodings}))))}return transceiver})},exports.shimGetParameters=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCRtpSender)return;var origGetParameters=window.RTCRtpSender.prototype.getParameters;origGetParameters&&(window.RTCRtpSender.prototype.getParameters=function(){var params=origGetParameters.apply(this,arguments);return"encodings"in params||(params.encodings=[].concat(this.sendEncodings||[{}])),params})},exports.shimCreateOffer=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection)return;var origCreateOffer=window.RTCPeerConnection.prototype.createOffer;window.RTCPeerConnection.prototype.createOffer=function(){var _this4=this,_arguments2=arguments;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then((function(){return origCreateOffer.apply(_this4,_arguments2)})).finally((function(){_this4.setParametersPromises=[]})):origCreateOffer.apply(this,arguments)}},exports.shimCreateAnswer=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection)return;var origCreateAnswer=window.RTCPeerConnection.prototype.createAnswer;window.RTCPeerConnection.prototype.createAnswer=function(){var _this5=this,_arguments3=arguments;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then((function(){return origCreateAnswer.apply(_this5,_arguments3)})).finally((function(){_this5.setParametersPromises=[]})):origCreateAnswer.apply(this,arguments)}};var utils=function(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}(require("../utils"))},{"../utils":11,"./getdisplaymedia":8,"./getusermedia":9}],8:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0}),exports.shimGetDisplayMedia=function(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");return err.name="NotFoundError",err.code=8,Promise.reject(err)}return!0===constraints.video?constraints.video={mediaSource:preferredMediaSource}:constraints.video.mediaSource=preferredMediaSource,window.navigator.mediaDevices.getUserMedia(constraints)}}},{}],9:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0});var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};exports.shimGetUserMedia=function(window,browserDetails){var navigator=window&&window.navigator,MediaStreamTrack=window&&window.MediaStreamTrack;if(navigator.getUserMedia=function(constraints,onSuccess,onError){utils.deprecated("navigator.getUserMedia","navigator.mediaDevices.getUserMedia"),navigator.mediaDevices.getUserMedia(constraints).then(onSuccess,onError)},!(browserDetails.version>55&&"autoGainControl"in navigator.mediaDevices.getSupportedConstraints())){var remap=function(obj,a,b){a in obj&&!(b in obj)&&(obj[b]=obj[a],delete obj[a])},nativeGetUserMedia=navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);if(navigator.mediaDevices.getUserMedia=function(c){return"object"===(void 0===c?"undefined":_typeof(c))&&"object"===_typeof(c.audio)&&(c=JSON.parse(JSON.stringify(c)),remap(c.audio,"autoGainControl","mozAutoGainControl"),remap(c.audio,"noiseSuppression","mozNoiseSuppression")),nativeGetUserMedia(c)},MediaStreamTrack&&MediaStreamTrack.prototype.getSettings){var nativeGetSettings=MediaStreamTrack.prototype.getSettings;MediaStreamTrack.prototype.getSettings=function(){var obj=nativeGetSettings.apply(this,arguments);return remap(obj,"mozAutoGainControl","autoGainControl"),remap(obj,"mozNoiseSuppression","noiseSuppression"),obj}}if(MediaStreamTrack&&MediaStreamTrack.prototype.applyConstraints){var nativeApplyConstraints=MediaStreamTrack.prototype.applyConstraints;MediaStreamTrack.prototype.applyConstraints=function(c){return"audio"===this.kind&&"object"===(void 0===c?"undefined":_typeof(c))&&(c=JSON.parse(JSON.stringify(c)),remap(c,"autoGainControl","mozAutoGainControl"),remap(c,"noiseSuppression","mozNoiseSuppression")),nativeApplyConstraints.apply(this,[c])}}}};var utils=function(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}(require("../utils"))},{"../utils":11}],10:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0});var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};exports.shimLocalStreamsAPI=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection)return;"getLocalStreams"in window.RTCPeerConnection.prototype||(window.RTCPeerConnection.prototype.getLocalStreams=function(){return this._localStreams||(this._localStreams=[]),this._localStreams});if(!("addStream"in window.RTCPeerConnection.prototype)){var _addTrack=window.RTCPeerConnection.prototype.addTrack;window.RTCPeerConnection.prototype.addStream=function(stream){var _this=this;this._localStreams||(this._localStreams=[]),this._localStreams.includes(stream)||this._localStreams.push(stream),stream.getAudioTracks().forEach((function(track){return _addTrack.call(_this,track,stream)})),stream.getVideoTracks().forEach((function(track){return _addTrack.call(_this,track,stream)}))},window.RTCPeerConnection.prototype.addTrack=function(track){for(var _this2=this,_len=arguments.length,streams=Array(_len>1?_len-1:0),_key=1;_key<_len;_key++)streams[_key-1]=arguments[_key];return streams&&streams.forEach((function(stream){_this2._localStreams?_this2._localStreams.includes(stream)||_this2._localStreams.push(stream):_this2._localStreams=[stream]})),_addTrack.apply(this,arguments)}}"removeStream"in window.RTCPeerConnection.prototype||(window.RTCPeerConnection.prototype.removeStream=function(stream){var _this3=this;this._localStreams||(this._localStreams=[]);var index=this._localStreams.indexOf(stream);if(-1!==index){this._localStreams.splice(index,1);var tracks=stream.getTracks();this.getSenders().forEach((function(sender){tracks.includes(sender.track)&&_this3.removeTrack(sender)}))}})},exports.shimRemoteStreamsAPI=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection)return;"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(){return this._onaddstream},set:function(f){var _this4=this;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(_this4._remoteStreams||(_this4._remoteStreams=[]),!_this4._remoteStreams.includes(stream)){_this4._remoteStreams.push(stream);var event=new Event("addstream");event.stream=stream,_this4.dispatchEvent(event)}}))})}});var origSetRemoteDescription=window.RTCPeerConnection.prototype.setRemoteDescription;window.RTCPeerConnection.prototype.setRemoteDescription=function(){var pc=this;return this._onaddstreampoly||this.addEventListener("track",this._onaddstreampoly=function(e){e.streams.forEach((function(stream){if(pc._remoteStreams||(pc._remoteStreams=[]),!(pc._remoteStreams.indexOf(stream)>=0)){pc._remoteStreams.push(stream);var event=new Event("addstream");event.stream=stream,pc.dispatchEvent(event)}}))}),origSetRemoteDescription.apply(pc,arguments)}}},exports.shimCallbacksAPI=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||!window.RTCPeerConnection)return;var prototype=window.RTCPeerConnection.prototype,origCreateOffer=prototype.createOffer,origCreateAnswer=prototype.createAnswer,setLocalDescription=prototype.setLocalDescription,setRemoteDescription=prototype.setRemoteDescription,addIceCandidate=prototype.addIceCandidate;prototype.createOffer=function(successCallback,failureCallback){var options=arguments.length>=2?arguments[2]:arguments[0],promise=origCreateOffer.apply(this,[options]);return failureCallback?(promise.then(successCallback,failureCallback),Promise.resolve()):promise},prototype.createAnswer=function(successCallback,failureCallback){var options=arguments.length>=2?arguments[2]:arguments[0],promise=origCreateAnswer.apply(this,[options]);return failureCallback?(promise.then(successCallback,failureCallback),Promise.resolve()):promise};var withCallback=function(description,successCallback,failureCallback){var promise=setLocalDescription.apply(this,[description]);return failureCallback?(promise.then(successCallback,failureCallback),Promise.resolve()):promise};prototype.setLocalDescription=withCallback,withCallback=function(description,successCallback,failureCallback){var promise=setRemoteDescription.apply(this,[description]);return failureCallback?(promise.then(successCallback,failureCallback),Promise.resolve()):promise},prototype.setRemoteDescription=withCallback,withCallback=function(candidate,successCallback,failureCallback){var promise=addIceCandidate.apply(this,[candidate]);return failureCallback?(promise.then(successCallback,failureCallback),Promise.resolve()):promise},prototype.addIceCandidate=withCallback},exports.shimGetUserMedia=function(window){var navigator=window&&window.navigator;if(navigator.mediaDevices&&navigator.mediaDevices.getUserMedia){var mediaDevices=navigator.mediaDevices,_getUserMedia=mediaDevices.getUserMedia.bind(mediaDevices);navigator.mediaDevices.getUserMedia=function(constraints){return _getUserMedia(shimConstraints(constraints))}}!navigator.getUserMedia&&navigator.mediaDevices&&navigator.mediaDevices.getUserMedia&&(navigator.getUserMedia=function(constraints,cb,errcb){navigator.mediaDevices.getUserMedia(constraints).then(cb,errcb)}.bind(navigator))},exports.shimConstraints=shimConstraints,exports.shimRTCIceServerUrls=function(window){if(!window.RTCPeerConnection)return;var OrigPeerConnection=window.RTCPeerConnection;window.RTCPeerConnection=function(pcConfig,pcConstraints){if(pcConfig&&pcConfig.iceServers){for(var newIceServers=[],i=0;i<pcConfig.iceServers.length;i++){var server=pcConfig.iceServers[i];!server.hasOwnProperty("urls")&&server.hasOwnProperty("url")?(utils.deprecated("RTCIceServer.url","RTCIceServer.urls"),(server=JSON.parse(JSON.stringify(server))).urls=server.url,delete server.url,newIceServers.push(server)):newIceServers.push(pcConfig.iceServers[i])}pcConfig.iceServers=newIceServers}return new OrigPeerConnection(pcConfig,pcConstraints)},window.RTCPeerConnection.prototype=OrigPeerConnection.prototype,"generateCertificate"in OrigPeerConnection&&Object.defineProperty(window.RTCPeerConnection,"generateCertificate",{get:function(){return OrigPeerConnection.generateCertificate}})},exports.shimTrackEventTransceiver=function(window){"object"===(void 0===window?"undefined":_typeof(window))&&window.RTCTrackEvent&&"receiver"in window.RTCTrackEvent.prototype&&!("transceiver"in window.RTCTrackEvent.prototype)&&Object.defineProperty(window.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})},exports.shimCreateOfferLegacy=function(window){var origCreateOffer=window.RTCPeerConnection.prototype.createOffer;window.RTCPeerConnection.prototype.createOffer=function(offerOptions){if(offerOptions){void 0!==offerOptions.offerToReceiveAudio&&(offerOptions.offerToReceiveAudio=!!offerOptions.offerToReceiveAudio);var audioTransceiver=this.getTransceivers().find((function(transceiver){return"audio"===transceiver.receiver.track.kind}));!1===offerOptions.offerToReceiveAudio&&audioTransceiver?"sendrecv"===audioTransceiver.direction?audioTransceiver.setDirection?audioTransceiver.setDirection("sendonly"):audioTransceiver.direction="sendonly":"recvonly"===audioTransceiver.direction&&(audioTransceiver.setDirection?audioTransceiver.setDirection("inactive"):audioTransceiver.direction="inactive"):!0!==offerOptions.offerToReceiveAudio||audioTransceiver||this.addTransceiver("audio"),void 0!==offerOptions.offerToReceiveVideo&&(offerOptions.offerToReceiveVideo=!!offerOptions.offerToReceiveVideo);var videoTransceiver=this.getTransceivers().find((function(transceiver){return"video"===transceiver.receiver.track.kind}));!1===offerOptions.offerToReceiveVideo&&videoTransceiver?"sendrecv"===videoTransceiver.direction?videoTransceiver.setDirection?videoTransceiver.setDirection("sendonly"):videoTransceiver.direction="sendonly":"recvonly"===videoTransceiver.direction&&(videoTransceiver.setDirection?videoTransceiver.setDirection("inactive"):videoTransceiver.direction="inactive"):!0!==offerOptions.offerToReceiveVideo||videoTransceiver||this.addTransceiver("video")}return origCreateOffer.apply(this,arguments)}},exports.shimAudioContext=function(window){if("object"!==(void 0===window?"undefined":_typeof(window))||window.AudioContext)return;window.AudioContext=window.webkitAudioContext};var utils=function(obj){if(obj&&obj.__esModule)return obj;var newObj={};if(null!=obj)for(var key in obj)Object.prototype.hasOwnProperty.call(obj,key)&&(newObj[key]=obj[key]);return newObj.default=obj,newObj}(require("../utils"));function shimConstraints(constraints){return constraints&&void 0!==constraints.video?Object.assign({},constraints,{video:utils.compactObject(constraints.video)}):constraints}},{"../utils":11}],11:[function(require,module,exports){Object.defineProperty(exports,"__esModule",{value:!0});var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};exports.extractVersion=extractVersion,exports.wrapPeerConnectionEvent=function(window,eventNameToWrap,wrapper){if(!window.RTCPeerConnection)return;var proto=window.RTCPeerConnection.prototype,nativeAddEventListener=proto.addEventListener;proto.addEventListener=function(nativeEventName,cb){if(nativeEventName!==eventNameToWrap)return nativeAddEventListener.apply(this,arguments);var wrappedCallback=function(e){var modifiedEvent=wrapper(e);modifiedEvent&&(cb.handleEvent?cb.handleEvent(modifiedEvent):cb(modifiedEvent))};return this._eventMap=this._eventMap||{},this._eventMap[eventNameToWrap]||(this._eventMap[eventNameToWrap]=new Map),this._eventMap[eventNameToWrap].set(cb,wrappedCallback),nativeAddEventListener.apply(this,[nativeEventName,wrappedCallback])};var nativeRemoveEventListener=proto.removeEventListener;proto.removeEventListener=function(nativeEventName,cb){if(nativeEventName!==eventNameToWrap||!this._eventMap||!this._eventMap[eventNameToWrap])return nativeRemoveEventListener.apply(this,arguments);if(!this._eventMap[eventNameToWrap].has(cb))return nativeRemoveEventListener.apply(this,arguments);var unwrappedCb=this._eventMap[eventNameToWrap].get(cb);return this._eventMap[eventNameToWrap].delete(cb),0===this._eventMap[eventNameToWrap].size&&delete this._eventMap[eventNameToWrap],0===Object.keys(this._eventMap).length&&delete this._eventMap,nativeRemoveEventListener.apply(this,[nativeEventName,unwrappedCb])},Object.defineProperty(proto,"on"+eventNameToWrap,{get:function(){return this["_on"+eventNameToWrap]},set:function(cb){this["_on"+eventNameToWrap]&&(this.removeEventListener(eventNameToWrap,this["_on"+eventNameToWrap]),delete this["_on"+eventNameToWrap]),cb&&this.addEventListener(eventNameToWrap,this["_on"+eventNameToWrap]=cb)},enumerable:!0,configurable:!0})},exports.disableLog=function(bool){if("boolean"!=typeof bool)return new Error("Argument type: "+(void 0===bool?"undefined":_typeof(bool))+". Please use a boolean.");return logDisabled_=bool,bool?"adapter.js logging disabled":"adapter.js logging enabled"},exports.disableWarnings=function(bool){if("boolean"!=typeof bool)return new Error("Argument type: "+(void 0===bool?"undefined":_typeof(bool))+". Please use a boolean.");return deprecationWarnings_=!bool,"adapter.js deprecation warnings "+(bool?"disabled":"enabled")},exports.log=function(){if("object"===("undefined"==typeof window?"undefined":_typeof(window))){if(logDisabled_)return;"undefined"!=typeof console&&"function"==typeof console.log&&console.log.apply(console,arguments)}},exports.deprecated=function(oldMethod,newMethod){if(!deprecationWarnings_)return;console.warn(oldMethod+" is deprecated, please use "+newMethod+" instead.")},exports.detectBrowser=function(window){var result={browser:null,version:null};if(void 0===window||!window.navigator)return result.browser="Not a browser.",result;var navigator=window.navigator;if(navigator.mozGetUserMedia)result.browser="firefox",result.version=extractVersion(navigator.userAgent,/Firefox\/(\d+)\./,1);else if(navigator.webkitGetUserMedia||!1===window.isSecureContext&&window.webkitRTCPeerConnection&&!window.RTCIceGatherer)result.browser="chrome",result.version=extractVersion(navigator.userAgent,/Chrom(e|ium)\/(\d+)\./,2);else{if(!window.RTCPeerConnection||!navigator.userAgent.match(/AppleWebKit\/(\d+)\./))return result.browser="Not a supported browser.",result;result.browser="safari",result.version=extractVersion(navigator.userAgent,/AppleWebKit\/(\d+)\./,1),result.supportsUnifiedPlan=window.RTCRtpTransceiver&&"currentDirection"in window.RTCRtpTransceiver.prototype}return result},exports.compactObject=function compactObject(data){if(!isObject(data))return data;return Object.keys(data).reduce((function(accumulator,key){var isObj=isObject(data[key]),value=isObj?compactObject(data[key]):data[key],isEmptyObject=isObj&&!Object.keys(value).length;return void 0===value||isEmptyObject?accumulator:Object.assign(accumulator,function(obj,key,value){key in obj?Object.defineProperty(obj,key,{value:value,enumerable:!0,configurable:!0,writable:!0}):obj[key]=value;return obj}({},key,value))}),{})},exports.walkStats=walkStats,exports.filterStats=function(result,track,outbound){var streamStatsType=outbound?"outbound-rtp":"inbound-rtp",filteredResult=new Map;if(null===track)return filteredResult;var trackStats=[];return result.forEach((function(value){"track"===value.type&&value.trackIdentifier===track.id&&trackStats.push(value)})),trackStats.forEach((function(trackStat){result.forEach((function(stats){stats.type===streamStatsType&&stats.trackId===trackStat.id&&walkStats(result,stats,filteredResult)}))})),filteredResult};var logDisabled_=!0,deprecationWarnings_=!0;function extractVersion(uastring,expr,pos){var match=uastring.match(expr);return match&&match.length>=pos&&parseInt(match[pos],10)}function isObject(val){return"[object Object]"===Object.prototype.toString.call(val)}function walkStats(stats,base,resultSet){base&&!resultSet.has(base.id)&&(resultSet.set(base.id,base),Object.keys(base).forEach((function(name){name.endsWith("Id")?walkStats(stats,stats.get(base[name]),resultSet):name.endsWith("Ids")&&base[name].forEach((function(id){walkStats(stats,stats.get(id),resultSet)}))})))}},{}],12:[function(require,module,exports){var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj},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){return blob.split("\nm=").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);return sections.shift(),sections},SDPUtils.matchPrefix=function(blob,prefix){return SDPUtils.splitLines(blob).filter((function(line){return 0===line.indexOf(prefix)}))},SDPUtils.parseCandidate=function(line){for(var parts=void 0,candidate={foundation:(parts=0===line.indexOf("a=candidate:")?line.substring(12).split(" "):line.substring(10).split(" "))[0],component:{1:"rtp",2:"rtcp"}[parts[1]],protocol:parts[2].toLowerCase(),priority:parseInt(parts[3],10),ip:parts[4],address:parts[4],port:parseInt(parts[5],10),type:parts[7]},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:void 0===candidate[parts[i]]&&(candidate[parts[i]]=parts[i+1])}return candidate},SDPUtils.writeCandidate=function(candidate){var sdp=[];sdp.push(candidate.foundation);var component=candidate.component;"rtp"===component?sdp.push(1):"rtcp"===component?sdp.push(2):sdp.push(component),sdp.push(candidate.protocol.toUpperCase()),sdp.push(candidate.priority),sdp.push(candidate.address||candidate.ip),sdp.push(candidate.port);var type=candidate.type;return sdp.push("typ"),sdp.push(type),"host"!==type&&candidate.relatedAddress&&candidate.relatedPort&&(sdp.push("raddr"),sdp.push(candidate.relatedAddress),sdp.push("rport"),sdp.push(candidate.relatedPort)),candidate.tcpType&&"tcp"===candidate.protocol.toLowerCase()&&(sdp.push("tcptype"),sdp.push(candidate.tcpType)),(candidate.usernameFragment||candidate.ufrag)&&(sdp.push("ufrag"),sdp.push(candidate.usernameFragment||candidate.ufrag)),"candidate:"+sdp.join(" ")},SDPUtils.parseIceOptions=function(line){return line.substr(14).split(" ")},SDPUtils.parseRtpMap=function(line){var parts=line.substr(9).split(" "),parsed={payloadType:parseInt(parts.shift(),10)};return parts=parts[0].split("/"),parsed.name=parts[0],parsed.clockRate=parseInt(parts[1],10),parsed.channels=3===parts.length?parseInt(parts[2],10):1,parsed.numChannels=parsed.channels,parsed},SDPUtils.writeRtpMap=function(codec){var pt=codec.payloadType;void 0!==codec.preferredPayloadType&&(pt=codec.preferredPayloadType);var channels=codec.channels||codec.numChannels||1;return"a=rtpmap:"+pt+" "+codec.name+"/"+codec.clockRate+(1!==channels?"/"+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&&"sendrecv"!==headerExtension.direction?"/"+headerExtension.direction:"")+" "+headerExtension.uri+"\r\n"},SDPUtils.parseFmtp=function(line){for(var parsed={},kv=void 0,parts=line.substr(line.indexOf(" ")+1).split(";"),j=0;j<parts.length;j++)parsed[(kv=parts[j].trim().split("="))[0].trim()]=kv[1];return parsed},SDPUtils.writeFmtp=function(codec){var line="",pt=codec.payloadType;if(void 0!==codec.preferredPayloadType&&(pt=codec.preferredPayloadType),codec.parameters&&Object.keys(codec.parameters).length){var params=[];Object.keys(codec.parameters).forEach((function(param){codec.parameters[param]?params.push(param+"="+codec.parameters[param]):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="",pt=codec.payloadType;return void 0!==codec.preferredPayloadType&&(pt=codec.preferredPayloadType),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"})),lines},SDPUtils.parseSsrcMedia=function(line){var sp=line.indexOf(" "),parts={ssrc:parseInt(line.substr(7,sp-7),10)},colon=line.indexOf(":",sp);return colon>-1?(parts.attribute=line.substr(sp+1,colon-sp-1),parts.value=line.substr(colon+1)):parts.attribute=line.substr(sp+1),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){return{role:"auto",fingerprints:SDPUtils.matchPrefix(mediaSection+sessionpart,"a=fingerprint:").map(SDPUtils.parseFingerprint)}},SDPUtils.writeDtlsParameters=function(params,setupType){var sdp="a=setup:"+setupType+"\r\n";return params.fingerprints.forEach((function(fp){sdp+="a=fingerprint:"+fp.algorithm+" "+fp.value+"\r\n"})),sdp},SDPUtils.parseCryptoLine=function(line){var parts=line.substr(9).split(" ");return{tag:parseInt(parts[0],10),cryptoSuite:parts[1],keyParams:parts[2],sessionParams:parts.slice(3)}},SDPUtils.writeCryptoLine=function(parameters){return"a=crypto:"+parameters.tag+" "+parameters.cryptoSuite+" "+("object"===_typeof(parameters.keyParams)?SDPUtils.writeCryptoKeyParams(parameters.keyParams):parameters.keyParams)+(parameters.sessionParams?" "+parameters.sessionParams.join(" "):"")+"\r\n"},SDPUtils.parseCryptoKeyParams=function(keyParams){if(0!==keyParams.indexOf("inline:"))return null;var parts=keyParams.substr(7).split("|");return{keyMethod:"inline",keySalt:parts[0],lifeTime:parts[1],mkiValue:parts[2]?parts[2].split(":")[0]:void 0,mkiLength:parts[2]?parts[2].split(":")[1]:void 0}},SDPUtils.writeCryptoKeyParams=function(keyParams){return keyParams.keyMethod+":"+keyParams.keySalt+(keyParams.lifeTime?"|"+keyParams.lifeTime:"")+(keyParams.mkiValue&&keyParams.mkiLength?"|"+keyParams.mkiValue+":"+keyParams.mkiLength:"")},SDPUtils.getCryptoParameters=function(mediaSection,sessionpart){return SDPUtils.matchPrefix(mediaSection+sessionpart,"a=crypto:").map(SDPUtils.parseCryptoLine)},SDPUtils.getIceParameters=function(mediaSection,sessionpart){var ufrag=SDPUtils.matchPrefix(mediaSection+sessionpart,"a=ice-ufrag:")[0],pwd=SDPUtils.matchPrefix(mediaSection+sessionpart,"a=ice-pwd:")[0];return ufrag&&pwd?{usernameFragment:ufrag.substr(12),password:pwd.substr(10)}:null},SDPUtils.writeIceParameters=function(params){var sdp="a=ice-ufrag:"+params.usernameFragment+"\r\na=ice-pwd:"+params.password+"\r\n";return params.iceLite&&(sdp+="a=ice-lite\r\n"),sdp},SDPUtils.parseRtpParameters=function(mediaSection){for(var description={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},mline=SDPUtils.splitLines(mediaSection)[0].split(" "),i=3;i<mline.length;i++){var pt=mline[i],rtpmapline=SDPUtils.matchPrefix(mediaSection,"a=rtpmap:"+pt+" ")[0];if(rtpmapline){var codec=SDPUtils.parseRtpMap(rtpmapline),fmtps=SDPUtils.matchPrefix(mediaSection,"a=fmtp:"+pt+" ");switch(codec.parameters=fmtps.length?SDPUtils.parseFmtp(fmtps[0]):{},codec.rtcpFeedback=SDPUtils.matchPrefix(mediaSection,"a=rtcp-fb:"+pt+" ").map(SDPUtils.parseRtcpFb),description.codecs.push(codec),codec.name.toUpperCase()){case"RED":case"ULPFEC":description.fecMechanisms.push(codec.name.toUpperCase())}}}return SDPUtils.matchPrefix(mediaSection,"a=extmap:").forEach((function(line){description.headerExtensions.push(SDPUtils.parseExtmap(line))})),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){return void 0!==codec.preferredPayloadType?codec.preferredPayloadType: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;return caps.codecs.forEach((function(codec){codec.maxptime>maxptime&&(maxptime=codec.maxptime)})),maxptime>0&&(sdp+="a=maxptime:"+maxptime+"\r\n"),caps.headerExtensions&&caps.headerExtensions.forEach((function(extension){sdp+=SDPUtils.writeExtmap(extension)})),sdp},SDPUtils.parseRtpEncodingParameters=function(mediaSection){var encodingParameters=[],description=SDPUtils.parseRtpParameters(mediaSection),hasRed=-1!==description.fecMechanisms.indexOf("RED"),hasUlpfec=-1!==description.fecMechanisms.indexOf("ULPFEC"),ssrcs=SDPUtils.matchPrefix(mediaSection,"a=ssrc:").map((function(line){return SDPUtils.parseSsrcMedia(line)})).filter((function(parts){return"cname"===parts.attribute})),primarySsrc=ssrcs.length>0&&ssrcs[0].ssrc,secondarySsrc=void 0,flows=SDPUtils.matchPrefix(mediaSection,"a=ssrc-group:FID").map((function(line){return line.substr(17).split(" ").map((function(part){return parseInt(part,10)}))}));flows.length>0&&flows[0].length>1&&flows[0][0]===primarySsrc&&(secondarySsrc=flows[0][1]),description.codecs.forEach((function(codec){if("RTX"===codec.name.toUpperCase()&&codec.parameters.apt){var encParam={ssrc:primarySsrc,codecPayloadType:parseInt(codec.parameters.apt,10)};primarySsrc&&secondarySsrc&&(encParam.rtx={ssrc:secondarySsrc}),encodingParameters.push(encParam),hasRed&&((encParam=JSON.parse(JSON.stringify(encParam))).fec={ssrc:primarySsrc,mechanism:hasUlpfec?"red+ulpfec":"red"},encodingParameters.push(encParam))}})),0===encodingParameters.length&&primarySsrc&&encodingParameters.push({ssrc:primarySsrc});var bandwidth=SDPUtils.matchPrefix(mediaSection,"b=");return bandwidth.length&&(bandwidth=0===bandwidth[0].indexOf("b=TIAS:")?parseInt(bandwidth[0].substr(7),10):0===bandwidth[0].indexOf("b=AS:")?1e3*parseInt(bandwidth[0].substr(5),10)*.95-16e3:void 0,encodingParameters.forEach((function(params){params.maxBitrate=bandwidth}))),encodingParameters},SDPUtils.parseRtcpParameters=function(mediaSection){var rtcpParameters={},remoteSsrc=SDPUtils.matchPrefix(mediaSection,"a=ssrc:").map((function(line){return SDPUtils.parseSsrcMedia(line)})).filter((function(obj){return"cname"===obj.attribute}))[0];remoteSsrc&&(rtcpParameters.cname=remoteSsrc.value,rtcpParameters.ssrc=remoteSsrc.ssrc);var rsize=SDPUtils.matchPrefix(mediaSection,"a=rtcp-rsize");rtcpParameters.reducedSize=rsize.length>0,rtcpParameters.compound=0===rsize.length;var mux=SDPUtils.matchPrefix(mediaSection,"a=rtcp-mux");return rtcpParameters.mux=mux.length>0,rtcpParameters},SDPUtils.writeRtcpParameters=function(rtcpParameters){var sdp="";return rtcpParameters.reducedSize&&(sdp+="a=rtcp-rsize\r\n"),rtcpParameters.mux&&(sdp+="a=rtcp-mux\r\n"),void 0!==rtcpParameters.ssrc&&rtcpParameters.cname&&(sdp+="a=ssrc:"+rtcpParameters.ssrc+" cname:"+rtcpParameters.cname+"\r\n"),sdp},SDPUtils.parseMsid=function(mediaSection){var parts=void 0,spec=SDPUtils.matchPrefix(mediaSection,"a=msid:");if(1===spec.length)return{stream:(parts=spec[0].substr(7).split(" "))[0],track:parts[1]};var planB=SDPUtils.matchPrefix(mediaSection,"a=ssrc:").map((function(line){return SDPUtils.parseSsrcMedia(line)})).filter((function(msidParts){return"msid"===msidParts.attribute}));return planB.length>0?{stream:(parts=planB[0].value.split(" "))[0],track:parts[1]}:void 0},SDPUtils.parseSctpDescription=function(mediaSection){var mline=SDPUtils.parseMLine(mediaSection),maxSizeLine=SDPUtils.matchPrefix(mediaSection,"a=max-message-size:"),maxMessageSize=void 0;maxSizeLine.length>0&&(maxMessageSize=parseInt(maxSizeLine[0].substr(19),10)),isNaN(maxMessageSize)&&(maxMessageSize=65536);var sctpPort=SDPUtils.matchPrefix(mediaSection,"a=sctp-port:");if(sctpPort.length>0)return{port:parseInt(sctpPort[0].substr(12),10),protocol:mline.fmt,maxMessageSize:maxMessageSize};var sctpMapLines=SDPUtils.matchPrefix(mediaSection,"a=sctpmap:");if(sctpMapLines.length>0){var parts=sctpMapLines[0].substr(10).split(" ");return{port:parseInt(parts[0],10),protocol:parts[1],maxMessageSize:maxMessageSize}}},SDPUtils.writeSctpDescription=function(media,sctp){var output=[];return output="DTLS/SCTP"!==media.protocol?["m="+media.kind+" 9 "+media.protocol+" "+sctp.protocol+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctp-port:"+sctp.port+"\r\n"]:["m="+media.kind+" 9 "+media.protocol+" "+sctp.port+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctpmap:"+sctp.port+" "+sctp.protocol+" 65535\r\n"],void 0!==sctp.maxMessageSize&&output.push("a=max-message-size:"+sctp.maxMessageSize+"\r\n"),output.join("")},SDPUtils.generateSessionId=function(){return Math.random().toString().substr(2,21)},SDPUtils.writeSessionBoilerplate=function(sessId,sessVer,sessUser){var version=void 0!==sessVer?sessVer:2;return"v=0\r\no="+(sessUser||"thisisadapterortc")+" "+(sessId||SDPUtils.generateSessionId())+" "+version+" IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\n"},SDPUtils.getDirection=function(mediaSection,sessionpart){for(var lines=SDPUtils.splitLines(mediaSection),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)}return sessionpart?SDPUtils.getDirection(sessionpart):"sendrecv"},SDPUtils.getKind=function(mediaSection){return SDPUtils.splitLines(mediaSection)[0].split(" ")[0].substr(2)},SDPUtils.isRejected=function(mediaSection){return"0"===mediaSection.split(" ",2)[1]},SDPUtils.parseMLine=function(mediaSection){var parts=SDPUtils.splitLines(mediaSection)[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 parts=SDPUtils.matchPrefix(mediaSection,"o=")[0].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("string"!=typeof blob||0===blob.length)return!1;for(var lines=SDPUtils.splitLines(blob),i=0;i<lines.length;i++)if(lines[i].length<2||"="!==lines[i].charAt(1))return!1;return!0},"object"===(void 0===module?"undefined":_typeof(module))&&(module.exports=SDPUtils)},{}]},{},[1])(1)}));

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