lightview/docs/javascript/peerjs.min.js

Small, simple, powerful web UI and micro front end creation ... Great ideas from Svelte, React, Vue and Riot combined.

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e)if(Object.prototype.hasOwnProperty.call(e,o)){var s=i?Object.getOwnPropertyDescriptor(e,o):null;s&&(s.get||s.set)?Object.defineProperty(r,o,s):r[o]=e[o]}return r.default=e,t&&t.set(e,r),r}function o(e,t,r){return t in e?Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0}):e[t]=r,e}function s(e){return(s="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function a(e){e.MediaStream=e.MediaStream||e.webkitMediaStream}function c(t){if("object"!==s(t)||!t.RTCPeerConnection||"ontrack"in t.RTCPeerConnection.prototype)e.wrapPeerConnectionEvent(t,"track",function(e){return e.transceiver||Object.defineProperty(e,"transceiver",{value:{receiver:e.receiver}}),e});else{Object.defineProperty(t.RTCPeerConnection.prototype,"ontrack",{get:function(){return this._ontrack},set:function(e){this._ontrack&&this.removeEventListener("track",this._ontrack),this.addEventListener("track",this._ontrack=e)},enumerable:!0,configurable:!0});var r=t.RTCPeerConnection.prototype.setRemoteDescription;t.RTCPeerConnection.prototype.setRemoteDescription=function(){var e=this;return this._ontrackpoly||(this._ontrackpoly=function(r){r.stream.addEventListener("addtrack",function(n){var i;i=t.RTCPeerConnection.prototype.getReceivers?e.getReceivers().find(function(e){return e.track&&e.track.id===n.track.id}):{track:n.track};var o=new Event("track");o.track=n.track,o.receiver=i,o.transceiver={receiver:i},o.streams=[r.stream],e.dispatchEvent(o)}),r.stream.getTracks().forEach(function(n){var i;i=t.RTCPeerConnection.prototype.getReceivers?e.getReceivers().find(function(e){return e.track&&e.track.id===n.id}):{track:n};var o=new Event("track");o.track=n,o.receiver=i,o.transceiver={receiver:i},o.streams=[r.stream],e.dispatchEvent(o)})},this.addEventListener("addstream",this._ontrackpoly)),r.apply(this,arguments)}}}function p(e){if("object"===s(e)&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype){var t=function(e,t){return{track:t,get dtmf(){return void 0===this._dtmf&&("audio"===t.kind?this._dtmf=e.createDTMFSender(t):this._dtmf=null),this._dtmf},_pc:e}};if(!e.RTCPeerConnection.prototype.getSenders){e.RTCPeerConnection.prototype.getSenders=function(){return this._senders=this._senders||[],this._senders.slice()};var r=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,n){var i=r.apply(this,arguments);return i||(i=t(this,e),this._senders.push(i)),i};var n=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){n.apply(this,arguments);var t=this._senders.indexOf(e);-1!==t&&this._senders.splice(t,1)}}var i=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._senders=this._senders||[],i.apply(this,[e]),e.getTracks().forEach(function(e){r._senders.push(t(r,e))})};var o=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._senders=this._senders||[],o.apply(this,[e]),e.getTracks().forEach(function(e){var r=t._senders.find(function(t){return t.track===e});r&&t._senders.splice(t._senders.indexOf(r),1)})}}else if("object"===s(e)&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)){var a=e.RTCPeerConnection.prototype.getSenders;e.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=a.apply(this,[]);return t.forEach(function(t){return 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Promise(function(r,n){t.apply(e,[function(e){r(s(o(e)))},n])}).then(n,i)}}}function h(t){if("object"===s(t)&&t.RTCPeerConnection&&t.RTCRtpSender&&t.RTCRtpReceiver){if(!("getStats"in t.RTCRtpSender.prototype)){var r=t.RTCPeerConnection.prototype.getSenders;r&&(t.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=r.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t});var n=t.RTCPeerConnection.prototype.addTrack;n&&(t.RTCPeerConnection.prototype.addTrack=function(){var e=n.apply(this,arguments);return e._pc=this,e}),t.RTCRtpSender.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(r){return e.filterStats(r,t.track,!0)})}}if(!("getStats"in t.RTCRtpReceiver.prototype)){var i=t.RTCPeerConnection.prototype.getReceivers;i&&(t.RTCPeerConnection.prototype.getReceivers=function(){var e=this,t=i.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t}),e.wrapPeerConnectionEvent(t,"track",function(e){return e.receiver._pc=e.srcElement,e}),t.RTCRtpReceiver.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(r){return e.filterStats(r,t.track,!1)})}}if("getStats"in t.RTCRtpSender.prototype&&"getStats"in t.RTCRtpReceiver.prototype){var o=t.RTCPeerConnection.prototype.getStats;t.RTCPeerConnection.prototype.getStats=function(){if(arguments.length>0&&arguments[0]instanceof t.MediaStreamTrack){var e,r,n,i=arguments[0];return this.getSenders().forEach(function(t){t.track===i&&(e?n=!0:e=t)}),this.getReceivers().forEach(function(e){return e.track===i&&(r?n=!0:r=e),e.track===i}),n||e&&r?Promise.reject(new DOMException("There are more than one sender or receiver for the track.","InvalidAccessError")):e?e.getStats():r?r.getStats():Promise.reject(new DOMException("There is no sender or receiver for the track.","InvalidAccessError"))}return o.apply(this,arguments)}}}}function f(e){e.RTCPeerConnection.prototype.getLocalStreams=function(){var e=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},Object.keys(this._shimmedLocalStreams).map(function(t){return e._shimmedLocalStreams[t][0]})};var t=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,r){if(!r)return t.apply(this,arguments);this._shimmedLocalStreams=this._shimmedLocalStreams||{};var n=t.apply(this,arguments);return this._shimmedLocalStreams[r.id]?-1===this._shimmedLocalStreams[r.id].indexOf(n)&&this._shimmedLocalStreams[r.id].push(n):this._shimmedLocalStreams[r.id]=[r,n],n};var r=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var t=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{},e.getTracks().forEach(function(e){if(t.getSenders().find(function(t){return t.track===e}))throw new DOMException("Track already exists.","InvalidAccessError")});var n=this.getSenders();r.apply(this,arguments);var i=this.getSenders().filter(function(e){return-1===n.indexOf(e)});this._shimmedLocalStreams[e.id]=[e].concat(i)};var n=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},delete this._shimmedLocalStreams[e.id],n.apply(this,arguments)};var i=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){var t=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},e&&Object.keys(this._shimmedLocalStreams).forEach(function(r){var n=t._shimmedLocalStreams[r].indexOf(e);-1!==n&&t._shimmedLocalStreams[r].splice(n,1),1===t._shimmedLocalStreams[r].length&&delete t._shimmedLocalStreams[r]}),i.apply(this,arguments)}}function m(e,t){if(e.RTCPeerConnection){if(e.RTCPeerConnection.prototype.addTrack&&t.version>=65)return f(e);var r=e.RTCPeerConnection.prototype.getLocalStreams;e.RTCPeerConnection.prototype.getLocalStreams=function(){var e=this,t=r.apply(this);return this._reverseStreams=this._reverseStreams||{},t.map(function(t){return e._reverseStreams[t.id]})};var n=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(t){var r=this;if(this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},t.getTracks().forEach(function(e){if(r.getSenders().find(function(t){return t.track===e}))throw new DOMException("Track already exists.","InvalidAccessError")}),!this._reverseStreams[t.id]){var i=new e.MediaStream(t.getTracks());this._streams[t.id]=i,this._reverseStreams[i.id]=t,t=i}n.apply(this,[t])};var i=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},i.apply(this,[this._streams[e.id]||e]),delete this._reverseStreams[this._streams[e.id]?this._streams[e.id].id:e.id],delete this._streams[e.id]},e.RTCPeerConnection.prototype.addTrack=function(t,r){var n=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");var i=[].slice.call(arguments,1);if(1!==i.length||!i[0].getTracks().find(function(e){return e===t}))throw new DOMException("The adapter.js addTrack polyfill only supports a single  stream which is associated with the specified track.","NotSupportedError");if(this.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError");this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{};var o=this._streams[r.id];if(o)o.addTrack(t),Promise.resolve().then(function(){n.dispatchEvent(new Event("negotiationneeded"))});else{var s=new e.MediaStream([t]);this._streams[r.id]=s,this._reverseStreams[s.id]=r,this.addStream(s)}return this.getSenders().find(function(e){return e.track===t})},["createOffer","createAnswer"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=o({},t,function(){var e=this,t=arguments;return arguments.length&&"function"==typeof arguments[0]?r.apply(this,[function(r){var n=c(e,r);t[0].apply(null,[n])},function(e){t[1]&&t[1].apply(null,e)},arguments[2]]):r.apply(this,arguments).then(function(t){return c(e,t)})});e.RTCPeerConnection.prototype[t]=n[t]});var s=e.RTCPeerConnection.prototype.setLocalDescription;e.RTCPeerConnection.prototype.setLocalDescription=function(){return arguments.length&&arguments[0].type?(arguments[0]=(e=this,t=arguments[0],r=t.sdp,Object.keys(e._reverseStreams||[]).forEach(function(t){var n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(new RegExp(n.id,"g"),i.id)}),new RTCSessionDescription({type:t.type,sdp:r})),s.apply(this,arguments)):s.apply(this,arguments);var e,t,r};var a=Object.getOwnPropertyDescriptor(e.RTCPeerConnection.prototype,"localDescription");Object.defineProperty(e.RTCPeerConnection.prototype,"localDescription",{get:function(){var e=a.get.apply(this);return""===e.type?e:c(this,e)}}),e.RTCPeerConnection.prototype.removeTrack=function(e){var t,r=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");if(!e._pc)throw new DOMException("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.","TypeError");if(!(e._pc===this))throw new DOMException("Sender was not created by this connection.","InvalidAccessError");this._streams=this._streams||{},Object.keys(this._streams).forEach(function(n){r._streams[n].getTracks().find(function(t){return e.track===t})&&(t=r._streams[n])}),t&&(1===t.getTracks().length?this.removeStream(this._reverseStreams[t.id]):t.removeTrack(e.track),this.dispatchEvent(new Event("negotiationneeded")))}}function 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"+r.parameter:"")+"\r\n"}),e},r.parseSsrcMedia=function(r){var e=r.indexOf(" "),t={ssrc:parseInt(r.substr(7,e-7),10)},a=r.indexOf(":",e);return a>-1?(t.attribute=r.substr(e+1,a-e-1),t.value=r.substr(a+1)):t.attribute=r.substr(e+1),t},r.parseSsrcGroup=function(r){var e=r.substr(13).split(" ");return{semantics:e.shift(),ssrcs:e.map(function(r){return parseInt(r,10)})}},r.getMid=function(e){var t=r.matchPrefix(e,"a=mid:")[0];if(t)return t.substr(6)},r.parseFingerprint=function(r){var e=r.substr(14).split(" ");return{algorithm:e[0].toLowerCase(),value:e[1]}},r.getDtlsParameters=function(e,t){return{role:"auto",fingerprints:r.matchPrefix(e+t,"a=fingerprint:").map(r.parseFingerprint)}},r.writeDtlsParameters=function(r,e){var t="a=setup:"+e+"\r\n";return r.fingerprints.forEach(function(r){t+="a=fingerprint:"+r.algorithm+" "+r.value+"\r\n"}),t},r.parseCryptoLine=function(r){var e=r.substr(9).split(" ");return{tag:parseInt(e[0],10),cryptoSuite:e[1],keyParams:e[2],sessionParams:e.slice(3)}},r.writeCryptoLine=function(e){return"a=crypto:"+e.tag+" "+e.cryptoSuite+" "+("object"==typeof e.keyParams?r.writeCryptoKeyParams(e.keyParams):e.keyParams)+(e.sessionParams?" "+e.sessionParams.join(" "):"")+"\r\n"},r.parseCryptoKeyParams=function(r){if(0!==r.indexOf("inline:"))return null;var e=r.substr(7).split("|");return{keyMethod:"inline",keySalt:e[0],lifeTime:e[1],mkiValue:e[2]?e[2].split(":")[0]:void 0,mkiLength:e[2]?e[2].split(":")[1]:void 0}},r.writeCryptoKeyParams=function(r){return r.keyMethod+":"+r.keySalt+(r.lifeTime?"|"+r.lifeTime:"")+(r.mkiValue&&r.mkiLength?"|"+r.mkiValue+":"+r.mkiLength:"")},r.getCryptoParameters=function(e,t){return r.matchPrefix(e+t,"a=crypto:").map(r.parseCryptoLine)},r.getIceParameters=function(e,t){var a=r.matchPrefix(e+t,"a=ice-ufrag:")[0],n=r.matchPrefix(e+t,"a=ice-pwd:")[0];return a&&n?{usernameFragment:a.substr(12),password:n.substr(10)}:null},r.writeIceParameters=function(r){return"a=ice-ufrag:"+r.usernameFragment+"\r\na=ice-pwd:"+r.password+"\r\n"},r.parseRtpParameters=function(e){for(var t={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},a=r.splitLines(e)[0].split(" "),n=3;n<a.length;n++){var s=a[n],i=r.matchPrefix(e,"a=rtpmap:"+s+" ")[0];if(i){var p=r.parseRtpMap(i),c=r.matchPrefix(e,"a=fmtp:"+s+" ");switch(p.parameters=c.length?r.parseFmtp(c[0]):{},p.rtcpFeedback=r.matchPrefix(e,"a=rtcp-fb:"+s+" ").map(r.parseRtcpFb),t.codecs.push(p),p.name.toUpperCase()){case"RED":case"ULPFEC":t.fecMechanisms.push(p.name.toUpperCase())}}}return r.matchPrefix(e,"a=extmap:").forEach(function(e){t.headerExtensions.push(r.parseExtmap(e))}),t},r.writeRtpDescription=function(e,t){var a="";a+="m="+e+" ",a+=t.codecs.length>0?"9":"0",a+=" UDP/TLS/RTP/SAVPF ",a+=t.codecs.map(function(r){return void 0!==r.preferredPayloadType?r.preferredPayloadType:r.payloadType}).join(" ")+"\r\n",a+="c=IN IP4 0.0.0.0\r\n",a+="a=rtcp:9 IN IP4 0.0.0.0\r\n",t.codecs.forEach(function(e){a+=r.writeRtpMap(e),a+=r.writeFmtp(e),a+=r.writeRtcpFb(e)});var n=0;return t.codecs.forEach(function(r){r.maxptime>n&&(n=r.maxptime)}),n>0&&(a+="a=maxptime:"+n+"\r\n"),a+="a=rtcp-mux\r\n",t.headerExtensions&&t.headerExtensions.forEach(function(e){a+=r.writeExtmap(e)}),a},r.parseRtpEncodingParameters=function(e){var t,a=[],n=r.parseRtpParameters(e),s=-1!==n.fecMechanisms.indexOf("RED"),i=-1!==n.fecMechanisms.indexOf("ULPFEC"),p=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"cname"===r.attribute}),c=p.length>0&&p[0].ssrc,o=r.matchPrefix(e,"a=ssrc-group:FID").map(function(r){return r.substr(17).split(" ").map(function(r){return parseInt(r,10)})});o.length>0&&o[0].length>1&&o[0][0]===c&&(t=o[0][1]),n.codecs.forEach(function(r){if("RTX"===r.name.toUpperCase()&&r.parameters.apt){var e={ssrc:c,codecPayloadType:parseInt(r.parameters.apt,10)};c&&t&&(e.rtx={ssrc:t}),a.push(e),s&&((e=JSON.parse(JSON.stringify(e))).fec={ssrc:c,mechanism:i?"red+ulpfec":"red"},a.push(e))}}),0===a.length&&c&&a.push({ssrc:c});var u=r.matchPrefix(e,"b=");return u.length&&(u=0===u[0].indexOf("b=TIAS:")?parseInt(u[0].substr(7),10):0===u[0].indexOf("b=AS:")?1e3*parseInt(u[0].substr(5),10)*.95-16e3:void 0,a.forEach(function(r){r.maxBitrate=u})),a},r.parseRtcpParameters=function(e){var t={},a=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"cname"===r.attribute})[0];a&&(t.cname=a.value,t.ssrc=a.ssrc);var n=r.matchPrefix(e,"a=rtcp-rsize");t.reducedSize=n.length>0,t.compound=0===n.length;var s=r.matchPrefix(e,"a=rtcp-mux");return t.mux=s.length>0,t},r.parseMsid=function(e){var t,a=r.matchPrefix(e,"a=msid:");if(1===a.length)return{stream:(t=a[0].substr(7).split(" "))[0],track:t[1]};var n=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"msid"===r.attribute});return n.length>0?{stream:(t=n[0].value.split(" "))[0],track:t[1]}:void 0},r.parseSctpDescription=function(e){var t,a=r.parseMLine(e),n=r.matchPrefix(e,"a=max-message-size:");n.length>0&&(t=parseInt(n[0].substr(19),10)),isNaN(t)&&(t=65536);var s=r.matchPrefix(e,"a=sctp-port:");if(s.length>0)return{port:parseInt(s[0].substr(12),10),protocol:a.fmt,maxMessageSize:t};if(r.matchPrefix(e,"a=sctpmap:").length>0){var i=r.matchPrefix(e,"a=sctpmap:")[0].substr(10).split(" ");return{port:parseInt(i[0],10),protocol:i[1],maxMessageSize:t}}},r.writeSctpDescription=function(r,e){var t=[];return t="DTLS/SCTP"!==r.protocol?["m="+r.kind+" 9 "+r.protocol+" "+e.protocol+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctp-port:"+e.port+"\r\n"]:["m="+r.kind+" 9 "+r.protocol+" "+e.port+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctpmap:"+e.port+" "+e.protocol+" 65535\r\n"],void 0!==e.maxMessageSize&&t.push("a=max-message-size:"+e.maxMessageSize+"\r\n"),t.join("")},r.generateSessionId=function(){return Math.random().toString().substr(2,21)},r.writeSessionBoilerplate=function(e,t,a){var n=void 0!==t?t:2;return"v=0\r\no="+(a||"thisisadapterortc")+" "+(e||r.generateSessionId())+" "+n+" IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\n"},r.writeMediaSection=function(e,t,a,n){var s=r.writeRtpDescription(e.kind,t);if(s+=r.writeIceParameters(e.iceGatherer.getLocalParameters()),s+=r.writeDtlsParameters(e.dtlsTransport.getLocalParameters(),"offer"===a?"actpass":"active"),s+="a=mid:"+e.mid+"\r\n",e.direction?s+="a="+e.direction+"\r\n":e.rtpSender&&e.rtpReceiver?s+="a=sendrecv\r\n":e.rtpSender?s+="a=sendonly\r\n":e.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",e.rtpSender){var i="msid:"+n.id+" "+e.rtpSender.track.id+"\r\n";s+="a="+i,s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" "+i,e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" "+i,s+="a=ssrc-group:FID "+e.sendEncodingParameters[0].ssrc+" "+e.sendEncodingParameters[0].rtx.ssrc+"\r\n")}return s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" cname:"+r.localCName+"\r\n",e.rtpSender&&e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" cname:"+r.localCName+"\r\n"),s},r.getDirection=function(e,t){for(var a=r.splitLines(e),n=0;n<a.length;n++)switch(a[n]){case"a=sendrecv":case"a=sendonly":case"a=recvonly":case"a=inactive":return a[n].substr(2)}return t?r.getDirection(t):"sendrecv"},r.getKind=function(e){return r.splitLines(e)[0].split(" ")[0].substr(2)},r.isRejected=function(r){return"0"===r.split(" ",2)[1]},r.parseMLine=function(e){var t=r.splitLines(e)[0].substr(2).split(" ");return{kind:t[0],port:parseInt(t[1],10),protocol:t[2],fmt:t.slice(3).join(" ")}},r.parseOLine=function(e){var t=r.matchPrefix(e,"o=")[0].substr(2).split(" ");return{username:t[0],sessionId:t[1],sessionVersion:parseInt(t[2],10),netType:t[3],addressType:t[4],address:t[5]}},r.isValidSDP=function(e){if("string"!=typeof e||0===e.length)return!1;for(var t=r.splitLines(e),a=0;a<t.length;a++)if(t[a].length<2||"="!==t[a].charAt(1))return!1;return!0},"object"==typeof module&&(module.exports=r);
},{}],"NJ2u":[function(require,module,exports) {
"use strict";var e=require("sdp");function t(e){return{inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[e.type]||e.type}function r(t,r,n,a,i){var s=e.writeRtpDescription(t.kind,r);if(s+=e.writeIceParameters(t.iceGatherer.getLocalParameters()),s+=e.writeDtlsParameters(t.dtlsTransport.getLocalParameters(),"offer"===n?"actpass":i||"active"),s+="a=mid:"+t.mid+"\r\n",t.rtpSender&&t.rtpReceiver?s+="a=sendrecv\r\n":t.rtpSender?s+="a=sendonly\r\n":t.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",t.rtpSender){var o=t.rtpSender._initialTrackId||t.rtpSender.track.id;t.rtpSender._initialTrackId=o;var c="msid:"+(a?a.id:"-")+" "+o+"\r\n";s+="a="+c,s+="a=ssrc:"+t.sendEncodingParameters[0].ssrc+" "+c,t.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+t.sendEncodingParameters[0].rtx.ssrc+" "+c,s+="a=ssrc-group:FID "+t.sendEncodingParameters[0].ssrc+" "+t.sendEncodingParameters[0].rtx.ssrc+"\r\n")}return s+="a=ssrc:"+t.sendEncodingParameters[0].ssrc+" cname:"+e.localCName+"\r\n",t.rtpSender&&t.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+t.sendEncodingParameters[0].rtx.ssrc+" cname:"+e.localCName+"\r\n"),s}function n(e,t){var r=!1;return(e=JSON.parse(JSON.stringify(e))).filter(function(e){if(e&&(e.urls||e.url)){var n=e.urls||e.url;e.url&&!e.urls&&console.warn("RTCIceServer.url is deprecated! Use urls instead.");var a="string"==typeof n;return a&&(n=[n]),n=n.filter(function(e){return 0===e.indexOf("turn:")&&-1!==e.indexOf("transport=udp")&&-1===e.indexOf("turn:[")&&!r?(r=!0,!0):0===e.indexOf("stun:")&&t>=14393&&-1===e.indexOf("?transport=udp")}),delete e.url,e.urls=a?n[0]:n,!!n.length}})}function a(e,t){var r={codecs:[],headerExtensions:[],fecMechanisms:[]},n=function(e,t){e=parseInt(e,10);for(var r=0;r<t.length;r++)if(t[r].payloadType===e||t[r].preferredPayloadType===e)return t[r]},a=function(e,t,r,a){var i=n(e.parameters.apt,r),s=n(t.parameters.apt,a);return i&&s&&i.name.toLowerCase()===s.name.toLowerCase()};return e.codecs.forEach(function(n){for(var i=0;i<t.codecs.length;i++){var s=t.codecs[i];if(n.name.toLowerCase()===s.name.toLowerCase()&&n.clockRate===s.clockRate){if("rtx"===n.name.toLowerCase()&&n.parameters&&s.parameters.apt&&!a(n,s,e.codecs,t.codecs))continue;(s=JSON.parse(JSON.stringify(s))).numChannels=Math.min(n.numChannels,s.numChannels),r.codecs.push(s),s.rtcpFeedback=s.rtcpFeedback.filter(function(e){for(var t=0;t<n.rtcpFeedback.length;t++)if(n.rtcpFeedback[t].type===e.type&&n.rtcpFeedback[t].parameter===e.parameter)return!0;return!1});break}}}),e.headerExtensions.forEach(function(e){for(var n=0;n<t.headerExtensions.length;n++){var a=t.headerExtensions[n];if(e.uri===a.uri){r.headerExtensions.push(a);break}}}),r}function i(e,t,r){return-1!=={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"]}}[t][e].indexOf(r)}function s(e,t){var r=e.getRemoteCandidates().find(function(e){return t.foundation===e.foundation&&t.ip===e.ip&&t.port===e.port&&t.priority===e.priority&&t.protocol===e.protocol&&t.type===e.type});re