1 line
61 KiB
JavaScript
1 line
61 KiB
JavaScript
!function(e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).adapter=e()}(function(){return function n(i,o,a){function s(t,e){if(!o[t]){if(!i[t]){var r="function"==typeof require&&require;if(!e&&r)return r(t,!0);if(c)return c(t,!0);throw(e=new Error("Cannot find module '"+t+"'")).code="MODULE_NOT_FOUND",e}r=o[t]={exports:{}},i[t][0].call(r.exports,function(e){return s(i[t][1][e]||e)},r,r.exports,n,i,o,a)}return o[t].exports}for(var c="function"==typeof require&&require,e=0;e<a.length;e++)s(a[e]);return s}({1:[function(e,t,r){"use strict";e=(0,e("./adapter_factory.js").adapterFactory)({window:"undefined"==typeof window?void 0:window});t.exports=e},{"./adapter_factory.js":2}],2:[function(e,t,r){"use strict";function a(e){return(a="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)}Object.defineProperty(r,"__esModule",{value:!0}),r.adapterFactory=function(){var e=(0<arguments.length&&void 0!==arguments[0]?arguments[0]:{}).window,t=1<arguments.length&&void 0!==arguments[1]?arguments[1]:{shimChrome:!0,shimFirefox:!0,shimSafari:!0},r=o.log,n=o.detectBrowser(e),i={browserDetails:n,commonShim:u,extractVersion:o.extractVersion,disableLog:o.disableLog,disableWarnings:o.disableWarnings,sdp:d};switch(n.browser){case"chrome":if(!s||!s.shimPeerConnection||!t.shimChrome)return r("Chrome shim is not included in this adapter release."),i;if(null===n.version)return r("Chrome shim can not determine version, not shimming."),i;r("adapter.js shimming chrome."),i.browserShim=s,u.shimAddIceCandidateNullOrEmpty(e,n),u.shimParameterlessSetLocalDescription(e,n),s.shimGetUserMedia(e,n),s.shimMediaStream(e,n),s.shimPeerConnection(e,n),s.shimOnTrack(e,n),s.shimAddTrackRemoveTrack(e,n),s.shimGetSendersWithDtmf(e,n),s.shimGetStats(e,n),s.shimSenderReceiverGetStats(e,n),s.fixNegotiationNeeded(e,n),u.shimRTCIceCandidate(e,n),u.shimRTCIceCandidateRelayProtocol(e,n),u.shimConnectionState(e,n),u.shimMaxMessageSize(e,n),u.shimSendThrowTypeError(e,n),u.removeExtmapAllowMixed(e,n);break;case"firefox":if(!c||!c.shimPeerConnection||!t.shimFirefox)return r("Firefox shim is not included in this adapter release."),i;r("adapter.js shimming firefox."),i.browserShim=c,u.shimAddIceCandidateNullOrEmpty(e,n),u.shimParameterlessSetLocalDescription(e,n),c.shimGetUserMedia(e,n),c.shimPeerConnection(e,n),c.shimOnTrack(e,n),c.shimRemoveStream(e,n),c.shimSenderGetStats(e,n),c.shimReceiverGetStats(e,n),c.shimRTCDataChannel(e,n),c.shimAddTransceiver(e,n),c.shimGetParameters(e,n),c.shimCreateOffer(e,n),c.shimCreateAnswer(e,n),u.shimRTCIceCandidate(e,n),u.shimConnectionState(e,n),u.shimMaxMessageSize(e,n),u.shimSendThrowTypeError(e,n);break;case"safari":if(!p||!t.shimSafari)return r("Safari shim is not included in this adapter release."),i;r("adapter.js shimming safari."),i.browserShim=p,u.shimAddIceCandidateNullOrEmpty(e,n),u.shimParameterlessSetLocalDescription(e,n),p.shimRTCIceServerUrls(e,n),p.shimCreateOfferLegacy(e,n),p.shimCallbacksAPI(e,n),p.shimLocalStreamsAPI(e,n),p.shimRemoteStreamsAPI(e,n),p.shimTrackEventTransceiver(e,n),p.shimGetUserMedia(e,n),p.shimAudioContext(e,n),u.shimRTCIceCandidate(e,n),u.shimRTCIceCandidateRelayProtocol(e,n),u.shimMaxMessageSize(e,n),u.shimSendThrowTypeError(e,n),u.removeExtmapAllowMixed(e,n);break;default:r("Unsupported browser!")}return i};var o=n(e("./utils")),s=n(e("./chrome/chrome_shim")),c=n(e("./firefox/firefox_shim")),p=n(e("./safari/safari_shim")),u=n(e("./common_shim")),d=n(e("sdp"));function f(e){if("function"!=typeof WeakMap)return null;var t=new WeakMap,r=new WeakMap;return(f=function(e){return e?r:t})(e)}function n(e,t){if(!t&&e&&e.__esModule)return e;if(null===e||"object"!==a(e)&&"function"!=typeof e)return{default:e};t=f(t);if(t&&t.has(e))return t.get(e);var r,n,i={},o=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(r in e)"default"!==r&&Object.prototype.hasOwnProperty.call(e,r)&&((n=o?Object.getOwnPropertyDescriptor(e,r):null)&&(n.get||n.set)?Object.defineProperty(i,r,n):i[r]=e[r]);return i.default=e,t&&t.set(e,i),i}},{"./chrome/chrome_shim":3,"./common_shim":6,"./firefox/firefox_shim":7,"./safari/safari_shim":10,"./utils":11,sdp:12}],3:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0}),r.fixNegotiationNeeded=function(e,r){i.wrapPeerConnectionEvent(e,"negotiationneeded",function(e){var t=e.target;if(!(r.version<72||t.getConfiguration&&"plan-b"===t.getConfiguration().sdpSemantics)||"stable"===t.signalingState)return e})},r.shimAddTrackRemoveTrack=function(i,e){if(i.RTCPeerConnection){if(i.RTCPeerConnection.prototype.addTrack&&65<=e.version)return p(i);var r=i.RTCPeerConnection.prototype.getLocalStreams,n=(i.RTCPeerConnection.prototype.getLocalStreams=function(){var t=this,e=r.apply(this);return this._reverseStreams=this._reverseStreams||{},e.map(function(e){return t._reverseStreams[e.id]})},i.RTCPeerConnection.prototype.addStream),t=(i.RTCPeerConnection.prototype.addStream=function(e){var t,r=this;this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},e.getTracks().forEach(function(t){if(r.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError")}),this._reverseStreams[e.id]||(t=new i.MediaStream(e.getTracks()),this._streams[e.id]=t,this._reverseStreams[t.id]=e,e=t),n.apply(this,[e])},i.RTCPeerConnection.prototype.removeStream),o=(i.RTCPeerConnection.prototype.removeStream=function(e){this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},t.apply(this,[this._streams[e.id]||e]),delete this._reverseStreams[(this._streams[e.id]||e).id],delete this._streams[e.id]},i.RTCPeerConnection.prototype.addTrack=function(t,e){var r=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");var n=[].slice.call(arguments,1);if(1!==n.length||!n[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 n=this._streams[e.id];return n?(n.addTrack(t),Promise.resolve().then(function(){r.dispatchEvent(new Event("negotiationneeded"))})):(n=new i.MediaStream([t]),this._streams[e.id]=n,this._reverseStreams[n.id]=e,this.addStream(n)),this.getSenders().find(function(e){return e.track===t})},["createOffer","createAnswer"].forEach(function(e){var n=i.RTCPeerConnection.prototype[e],t=c({},e,function(){var t=this,r=arguments;return arguments.length&&"function"==typeof arguments[0]?n.apply(this,[function(e){e=s(t,e);r[0].apply(null,[e])},function(e){r[1]&&r[1].apply(null,e)},arguments[2]]):n.apply(this,arguments).then(function(e){return s(t,e)})});i.RTCPeerConnection.prototype[e]=t[e]}),i.RTCPeerConnection.prototype.setLocalDescription),a=(i.RTCPeerConnection.prototype.setLocalDescription=function(){return arguments.length&&arguments[0].type&&(arguments[0]=(r=this,n=(e=arguments[0]).sdp,Object.keys(r._reverseStreams||[]).forEach(function(e){var e=r._reverseStreams[e],t=r._streams[e.id];n=n.replace(new RegExp(e.id,"g"),t.id)}),new RTCSessionDescription({type:e.type,sdp:n}))),o.apply(this,arguments);var r,e,n},Object.getOwnPropertyDescriptor(i.RTCPeerConnection.prototype,"localDescription"));Object.defineProperty(i.RTCPeerConnection.prototype,"localDescription",{get:function(){var e=a.get.apply(this);return""===e.type?e:s(this,e)}}),i.RTCPeerConnection.prototype.removeTrack=function(t){var r,n=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");if(!t._pc)throw new DOMException("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.","TypeError");if(!(t._pc===this))throw new DOMException("Sender was not created by this connection.","InvalidAccessError");this._streams=this._streams||{},Object.keys(this._streams).forEach(function(e){n._streams[e].getTracks().find(function(e){return t.track===e})&&(r=n._streams[e])}),r&&(1===r.getTracks().length?this.removeStream(this._reverseStreams[r.id]):r.removeTrack(t.track),this.dispatchEvent(new Event("negotiationneeded")))}}function s(r,e){var n=e.sdp;return Object.keys(r._reverseStreams||[]).forEach(function(e){var e=r._reverseStreams[e],t=r._streams[e.id];n=n.replace(new RegExp(t.id,"g"),e.id)}),new RTCSessionDescription({type:e.type,sdp:n})}},r.shimAddTrackRemoveTrackWithNative=p,Object.defineProperty(r,"shimGetDisplayMedia",{enumerable:!0,get:function(){return o.shimGetDisplayMedia}}),r.shimGetSendersWithDtmf=function(e){{var n,i,t,r,o,a;"object"===s(e)&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype?(n=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}},e.RTCPeerConnection.prototype.getSenders||(e.RTCPeerConnection.prototype.getSenders=function(){return this._senders=this._senders||[],this._senders.slice()},i=e.RTCPeerConnection.prototype.addTrack,e.RTCPeerConnection.prototype.addTrack=function(e,t){var r=i.apply(this,arguments);return r||(r=n(this,e),this._senders.push(r)),r},t=e.RTCPeerConnection.prototype.removeTrack,e.RTCPeerConnection.prototype.removeTrack=function(e){t.apply(this,arguments);e=this._senders.indexOf(e);-1!==e&&this._senders.splice(e,1)}),r=e.RTCPeerConnection.prototype.addStream,e.RTCPeerConnection.prototype.addStream=function(e){var t=this;this._senders=this._senders||[],r.apply(this,[e]),e.getTracks().forEach(function(e){t._senders.push(n(t,e))})},o=e.RTCPeerConnection.prototype.removeStream,e.RTCPeerConnection.prototype.removeStream=function(e){var r=this;this._senders=this._senders||[],o.apply(this,[e]),e.getTracks().forEach(function(t){var e=r._senders.find(function(e){return e.track===t});e&&r._senders.splice(r._senders.indexOf(e),1)})}):"object"===s(e)&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)&&(a=e.RTCPeerConnection.prototype.getSenders,e.RTCPeerConnection.prototype.getSenders=function(){var t=this,e=a.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e},Object.defineProperty(e.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}}))}},r.shimGetStats=function(e){var a;e.RTCPeerConnection&&(a=e.RTCPeerConnection.prototype.getStats,e.RTCPeerConnection.prototype.getStats=function(){var r=this,e=Array.prototype.slice.call(arguments),t=e[0],n=e[1],e=e[2];if(0<arguments.length&&"function"==typeof t)return a.apply(this,arguments);if(0===a.length&&(0===arguments.length||"function"!=typeof t))return a.apply(this,[]);var i=function(e){var n={};return e.result().forEach(function(t){var r={id:t.id,timestamp:t.timestamp,type:{localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[t.type]||t.type};t.names().forEach(function(e){r[e]=t.stat(e)}),n[r.id]=r}),n},o=function(t){return new Map(Object.keys(t).map(function(e){return[e,t[e]]}))};return 2<=arguments.length?a.apply(this,[function(e){n(o(i(e)))},t]):new Promise(function(t,e){a.apply(r,[function(e){t(o(i(e)))},e])}).then(n,e)})},Object.defineProperty(r,"shimGetUserMedia",{enumerable:!0,get:function(){return n.shimGetUserMedia}}),r.shimMediaStream=function(e){e.MediaStream=e.MediaStream||e.webkitMediaStream},r.shimOnTrack=function(o){{var e;"object"!==s(o)||!o.RTCPeerConnection||"ontrack"in o.RTCPeerConnection.prototype?i.wrapPeerConnectionEvent(o,"track",function(e){return e.transceiver||Object.defineProperty(e,"transceiver",{value:{receiver:e.receiver}}),e}):(Object.defineProperty(o.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}),e=o.RTCPeerConnection.prototype.setRemoteDescription,o.RTCPeerConnection.prototype.setRemoteDescription=function(){var i=this;return this._ontrackpoly||(this._ontrackpoly=function(n){n.stream.addEventListener("addtrack",function(t){var e=o.RTCPeerConnection.prototype.getReceivers?i.getReceivers().find(function(e){return e.track&&e.track.id===t.track.id}):{track:t.track},r=new Event("track");r.track=t.track,r.receiver=e,r.transceiver={receiver:e},r.streams=[n.stream],i.dispatchEvent(r)}),n.stream.getTracks().forEach(function(t){var e=o.RTCPeerConnection.prototype.getReceivers?i.getReceivers().find(function(e){return e.track&&e.track.id===t.id}):{track:t},r=new Event("track");r.track=t,r.receiver=e,r.transceiver={receiver:e},r.streams=[n.stream],i.dispatchEvent(r)})},this.addEventListener("addstream",this._ontrackpoly)),e.apply(this,arguments)})}},r.shimPeerConnection=function(n,e){!n.RTCPeerConnection&&n.webkitRTCPeerConnection&&(n.RTCPeerConnection=n.webkitRTCPeerConnection);n.RTCPeerConnection&&e.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(e){var t=n.RTCPeerConnection.prototype[e],r=c({},e,function(){return arguments[0]=new("addIceCandidate"===e?n.RTCIceCandidate:n.RTCSessionDescription)(arguments[0]),t.apply(this,arguments)});n.RTCPeerConnection.prototype[e]=r[e]})},r.shimSenderReceiverGetStats=function(e){var r,t,n,o;"object"===s(e)&&e.RTCPeerConnection&&e.RTCRtpSender&&e.RTCRtpReceiver&&("getStats"in e.RTCRtpSender.prototype||((r=e.RTCPeerConnection.prototype.getSenders)&&(e.RTCPeerConnection.prototype.getSenders=function(){var t=this,e=r.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e}),(t=e.RTCPeerConnection.prototype.addTrack)&&(e.RTCPeerConnection.prototype.addTrack=function(){var e=t.apply(this,arguments);return e._pc=this,e}),e.RTCRtpSender.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(e){return i.filterStats(e,t.track,!0)})}),"getStats"in e.RTCRtpReceiver.prototype||((n=e.RTCPeerConnection.prototype.getReceivers)&&(e.RTCPeerConnection.prototype.getReceivers=function(){var t=this,e=n.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e}),i.wrapPeerConnectionEvent(e,"track",function(e){return e.receiver._pc=e.srcElement,e}),e.RTCRtpReceiver.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(e){return i.filterStats(e,t.track,!1)})}),"getStats"in e.RTCRtpSender.prototype&&"getStats"in e.RTCRtpReceiver.prototype&&(o=e.RTCPeerConnection.prototype.getStats,e.RTCPeerConnection.prototype.getStats=function(){var t,r,n,i;return 0<arguments.length&&arguments[0]instanceof e.MediaStreamTrack?(t=arguments[0],this.getSenders().forEach(function(e){e.track===t&&(r?i=!0:r=e)}),this.getReceivers().forEach(function(e){return e.track===t&&(n?i=!0:n=e),e.track===t}),i||r&&n?Promise.reject(new DOMException("There are more than one sender or receiver for the track.","InvalidAccessError")):r?r.getStats():n?n.getStats():Promise.reject(new DOMException("There is no sender or receiver for the track.","InvalidAccessError"))):o.apply(this,arguments)}))};var i=function(e,t){if(!t&&e&&e.__esModule)return e;if(null===e||"object"!==s(e)&&"function"!=typeof e)return{default:e};t=a(t);if(t&&t.has(e))return t.get(e);var r,n={},i=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(r in e){var o;"default"!==r&&Object.prototype.hasOwnProperty.call(e,r)&&((o=i?Object.getOwnPropertyDescriptor(e,r):null)&&(o.get||o.set)?Object.defineProperty(n,r,o):n[r]=e[r])}n.default=e,t&&t.set(e,n);return n}(e("../utils.js")),n=e("./getusermedia"),o=e("./getdisplaymedia");function a(e){if("function"!=typeof WeakMap)return null;var t=new WeakMap,r=new WeakMap;return(a=function(e){return e?r:t})(e)}function c(e,t,r){return(t=function(e){e=function(e,t){if("object"!==s(e)||null===e)return e;var r=e[Symbol.toPrimitive];if(void 0===r)return("string"===t?String:Number)(e);r=r.call(e,t||"default");if("object"!==s(r))return r;throw new TypeError("@@toPrimitive must return a primitive value.")}(e,"string");return"symbol"===s(e)?e:String(e)}(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 p(e){e.RTCPeerConnection.prototype.getLocalStreams=function(){var t=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},Object.keys(this._shimmedLocalStreams).map(function(e){return t._shimmedLocalStreams[e][0]})};var n=e.RTCPeerConnection.prototype.addTrack,i=(e.RTCPeerConnection.prototype.addTrack=function(e,t){if(!t)return n.apply(this,arguments);this._shimmedLocalStreams=this._shimmedLocalStreams||{};var r=n.apply(this,arguments);return this._shimmedLocalStreams[t.id]?-1===this._shimmedLocalStreams[t.id].indexOf(r)&&this._shimmedLocalStreams[t.id].push(r):this._shimmedLocalStreams[t.id]=[t,r],r},e.RTCPeerConnection.prototype.addStream),t=(e.RTCPeerConnection.prototype.addStream=function(e){var r=this,t=(this._shimmedLocalStreams=this._shimmedLocalStreams||{},e.getTracks().forEach(function(t){if(r.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError")}),this.getSenders()),n=(i.apply(this,arguments),this.getSenders().filter(function(e){return-1===t.indexOf(e)}));this._shimmedLocalStreams[e.id]=[e].concat(n)},e.RTCPeerConnection.prototype.removeStream),o=(e.RTCPeerConnection.prototype.removeStream=function(e){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},delete this._shimmedLocalStreams[e.id],t.apply(this,arguments)},e.RTCPeerConnection.prototype.removeTrack);e.RTCPeerConnection.prototype.removeTrack=function(r){var n=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},r&&Object.keys(this._shimmedLocalStreams).forEach(function(e){var t=n._shimmedLocalStreams[e].indexOf(r);-1!==t&&n._shimmedLocalStreams[e].splice(t,1),1===n._shimmedLocalStreams[e].length&&delete n._shimmedLocalStreams[e]}),o.apply(this,arguments)}}},{"../utils.js":11,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0}),r.shimGetDisplayMedia=function(o,e){o.navigator.mediaDevices&&"getDisplayMedia"in o.navigator.mediaDevices||o.navigator.mediaDevices&&("function"!=typeof e?console.error("shimGetDisplayMedia: getSourceId argument is not a function"):o.navigator.mediaDevices.getDisplayMedia=function(i){return e(i).then(function(e){var t=i.video&&i.video.width,r=i.video&&i.video.height,n=i.video&&i.video.frameRate;return i.video={mandatory:{chromeMediaSource:"desktop",chromeMediaSourceId:e,maxFrameRate:n||3}},t&&(i.video.mandatory.maxWidth=t),r&&(i.video.mandatory.maxHeight=r),o.navigator.mediaDevices.getUserMedia(i)})})}},{}],5:[function(e,t,r){"use strict";function a(e){if("function"!=typeof WeakMap)return null;var t=new WeakMap,r=new WeakMap;return(a=function(e){return e?r:t})(e)}function c(e){return(c="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof 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0!==e.preferredPayloadType?e.preferredPayloadType:e.payloadType}).join(" ")+"\r\n"))+"c=IN IP4 0.0.0.0\r\n"+"a=rtcp:9 IN IP4 0.0.0.0\r\n",t.codecs.forEach(function(e){r=(r=(r+=p.writeRtpMap(e))+p.writeFmtp(e))+p.writeRtcpFb(e)}),0);return t.codecs.forEach(function(e){e.maxptime>n&&(n=e.maxptime)}),0<n&&(r+="a=maxptime:"+n+"\r\n"),t.headerExtensions&&t.headerExtensions.forEach(function(e){r+=p.writeExtmap(e)}),r},p.parseRtpEncodingParameters=function(e){var t=[],r=p.parseRtpParameters(e),n=-1!==r.fecMechanisms.indexOf("RED"),i=-1!==r.fecMechanisms.indexOf("ULPFEC"),o=p.matchPrefix(e,"a=ssrc:").map(function(e){return p.parseSsrcMedia(e)}).filter(function(e){return"cname"===e.attribute}),a=0<o.length&&o[0].ssrc,s=void 0,o=p.matchPrefix(e,"a=ssrc-group:FID").map(function(e){return e.substring(17).split(" ").map(function(e){return 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e.reducedSize&&(t+="a=rtcp-rsize\r\n"),e.mux&&(t+="a=rtcp-mux\r\n"),void 0!==e.ssrc&&e.cname&&(t+="a=ssrc:"+e.ssrc+" cname:"+e.cname+"\r\n"),t},p.parseMsid=function(e){var t=void 0,r=p.matchPrefix(e,"a=msid:");if(1===r.length)return{stream:(t=r[0].substring(7).split(" "))[0],track:t[1]};r=p.matchPrefix(e,"a=ssrc:").map(function(e){return p.parseSsrcMedia(e)}).filter(function(e){return"msid"===e.attribute});return 0<r.length?{stream:(t=r[0].value.split(" "))[0],track:t[1]}:void 0},p.parseSctpDescription=function(e){var t=p.parseMLine(e),r=p.matchPrefix(e,"a=max-message-size:"),n=void 0,r=(0<r.length&&(n=parseInt(r[0].substring(19),10)),isNaN(n)&&(n=65536),p.matchPrefix(e,"a=sctp-port:"));if(0<r.length)return{port:parseInt(r[0].substring(12),10),protocol:t.fmt,maxMessageSize:n};r=p.matchPrefix(e,"a=sctpmap:");return 0<r.length?(t=r[0].substring(10).split(" "),{port:parseInt(t[0],10),protocol:t[1],maxMessageSize:n}):void 0},p.writeSctpDescription=function(e,t){var r=[],r="DTLS/SCTP"!==e.protocol?["m="+e.kind+" 9 "+e.protocol+" "+t.protocol+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctp-port:"+t.port+"\r\n"]:["m="+e.kind+" 9 "+e.protocol+" "+t.port+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctpmap:"+t.port+" "+t.protocol+" 65535\r\n"];return void 0!==t.maxMessageSize&&r.push("a=max-message-size:"+t.maxMessageSize+"\r\n"),r.join("")},p.generateSessionId=function(){return Math.random().toString().substr(2,22)},p.writeSessionBoilerplate=function(e,t,r){t=void 0!==t?t:2;return"v=0\r\no="+(r||"thisisadapterortc")+" "+(e||p.generateSessionId())+" "+t+" IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\n"},p.getDirection=function(e,t){for(var r=p.splitLines(e),n=0;n<r.length;n++)switch(r[n]){case"a=sendrecv":case"a=sendonly":case"a=recvonly":case"a=inactive":return r[n].substring(2)}return t?p.getDirection(t):"sendrecv"},p.getKind=function(e){return p.splitLines(e)[0].split(" ")[0].substring(2)},p.isRejected=function(e){return"0"===e.split(" 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