https://www.pricerite.com.hk/_next/static/chunks/3308.b73a7fd8751f0fcf.js

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e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)){let t=e.RTCPeerConnection.prototype.getSenders;e.RTCPeerConnection.prototype.getSenders=function(){let e=t.apply(this,[]);return e.forEach(e=>e._pc=this),e},Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get(){return void 0===this._dtmf&&("audio"===this.track.kind?this._dtmf=this._pc.createDTMFSender(this.track):this._dtmf=null),this._dtmf}})}}function R(e){if(!("object"==typeof e&&e.RTCPeerConnection&&e.RTCRtpSender&&e.RTCRtpReceiver))return;if(!("getStats"in e.RTCRtpSender.prototype)){let t=e.RTCPeerConnection.prototype.getSenders;t&&(e.RTCPeerConnection.prototype.getSenders=function(){let e=t.apply(this,[]);return e.forEach(e=>e._pc=this),e});let r=e.RTCPeerConnection.prototype.addTrack;r&&(e.RTCPeerConnection.prototype.addTrack=function(){let e=r.apply(this,arguments);return e._pc=this,e}),e.RTCRtpSender.prototype.getStats=function(){let e=this;return 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r=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){this._shimmedLocalStreams=this._shimmedLocalStreams||{},e.getTracks().forEach(e=>{if(this.getSenders().find(t=>t.track===e))throw new DOMException("Track already exists.","InvalidAccessError")});let t=this.getSenders();r.apply(this,arguments);let n=this.getSenders().filter(e=>-1===t.indexOf(e));this._shimmedLocalStreams[e.id]=[e].concat(n)};let 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)};let i=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},e&&Object.keys(this._shimmedLocalStreams).forEach(t=>{let r=this._shimmedLocalStreams[t].indexOf(e);-1!==r&&this._shimmedLocalStreams[t].splice(r,1),1===this._shimmedLocalStreams[t].length&&delete this._shimmedLocalStreams[t]}),i.apply(this,arguments)}}function P(e,t){if(!e.RTCPeerConnection)return;if(e.RTCPeerConnection.prototype.addTrack&&t.version>=65)return S(e);let r=e.RTCPeerConnection.prototype.getLocalStreams;e.RTCPeerConnection.prototype.getLocalStreams=function(){let e=r.apply(this);return this._reverseStreams=this._reverseStreams||{},e.map(e=>this._reverseStreams[e.id])};let n=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(t){if(this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},t.getTracks().forEach(e=>{if(this.getSenders().find(t=>t.track===e))throw new DOMException("Track already exists.","InvalidAccessError")}),!this._reverseStreams[t.id]){let r=new e.MediaStream(t.getTracks());this._streams[t.id]=r,this._reverseStreams[r.id]=t,t=r}n.apply(this,[t])};let i=e.RTCPeerConnection.prototype.removeStream;function o(e,t){let r=t.sdp;return Object.keys(e._reverseStreams||[]).forEach(t=>{let n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(RegExp(i.id,"g"),n.id)}),new RTCSessionDescription({type:t.type,sdp:r})}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){if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");let n=[].slice.call(arguments,1);if(1!==n.length||!n[0].getTracks().find(e=>e===t))throw new DOMException("The adapter.js addTrack polyfill only supports a single  stream which is associated with the specified 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arguments.length&&arguments[0].type?(arguments[0]=(e=this,t=arguments[0],r=t.sdp,Object.keys(e._reverseStreams||[]).forEach(t=>{let n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(RegExp(n.id,"g"),i.id)}),new RTCSessionDescription({type:t.type,sdp:r})),s.apply(this,arguments)):s.apply(this,arguments)};let a=Object.getOwnPropertyDescriptor(e.RTCPeerConnection.prototype,"localDescription");Object.defineProperty(e.RTCPeerConnection.prototype,"localDescription",{get(){let e=a.get.apply(this);return""===e.type?e:o(this,e)}}),e.RTCPeerConnection.prototype.removeTrack=function(e){let t;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(r=>{this._streams[r].getTracks().find(t=>e.track===t)&&(t=this._streams[r])}),t&&(1===t.getTracks().length?this.removeStream(this._reverseStreams[t.id]):t.removeTrack(e.track),this.dispatchEvent(new Event("negotiationneeded")))}}function b(e,t){!e.RTCPeerConnection&&e.webkitRTCPeerConnection&&(e.RTCPeerConnection=e.webkitRTCPeerConnection),e.RTCPeerConnection&&t.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){let r=e.RTCPeerConnection.prototype[t];e.RTCPeerConnection.prototype[t]=({[t](){return arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]),r.apply(this,arguments)}})[t]})}function k(e,t){d(e,"negotiationneeded",e=>{let r=e.target;if(!(t.version<72)&&(!r.getConfiguration||"plan-b"!==r.getConfiguration().sdpSemantics)||"stable"===r.signalingState)return e})}function _(e,t){let r=e&&e.navigator,n=e&&e.MediaStreamTrack;if(r.getUserMedia=function(e,t,n){u("navigator.getUserMedia","navigator.mediaDevices.getUserMedia"),r.mediaDevices.getUserMedia(e).then(t,n)},!(t.version>55&&"autoGainControl"in r.mediaDevices.getSupportedConstraints())){let e=function(e,t,r){t in e&&!(r in e)&&(e[r]=e[t],delete e[t])},t=r.mediaDevices.getUserMedia.bind(r.mediaDevices);if(r.mediaDevices.getUserMedia=function(r){return"object"==typeof r&&"object"==typeof r.audio&&(e((r=JSON.parse(JSON.stringify(r))).audio,"autoGainControl","mozAutoGainControl"),e(r.audio,"noiseSuppression","mozNoiseSuppression")),t(r)},n&&n.prototype.getSettings){let t=n.prototype.getSettings;n.prototype.getSettings=function(){let r=t.apply(this,arguments);return e(r,"mozAutoGainControl","autoGainControl"),e(r,"mozNoiseSuppression","noiseSuppression"),r}}if(n&&n.prototype.applyConstraints){let t=n.prototype.applyConstraints;n.prototype.applyConstraints=function(r){return"audio"===this.kind&&"object"==typeof r&&(e(r=JSON.parse(JSON.stringify(r)),"autoGainControl","mozAutoGainControl"),e(r,"noiseSuppression","mozNoiseSuppression")),t.apply(this,[r])}}}}function E(e,t){e.navigator.mediaDevices&&"getDisplayMedia"in e.navigator.mediaDevices||e.navigator.mediaDevices&&(e.navigator.mediaDevices.getDisplayMedia=function(r){if(!(r&&r.video)){let e=new DOMException("getDisplayMedia without video constraints is undefined");return e.name="NotFoundError",e.code=8,Promise.reject(e)}return!0===r.video?r.video={mediaSource:t}:r.video.mediaSource=t,e.navigator.mediaDevices.getUserMedia(r)})}function w(e){"object"==typeof e&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)&&Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get(){return{receiver:this.receiver}}})}function x(e,t){if("object"!=typeof e||!(e.RTCPeerConnection||e.mozRTCPeerConnection))return;!e.RTCPeerConnection&&e.mozRTCPeerConnection&&(e.RTCPeerConnection=e.mozRTCPeerConnection),t.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){let r=e.RTCPeerConnection.prototype[t];e.RTCPeerConnection.prototype[t]=({[t](){return arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]),r.apply(this,arguments)}})[t]});let r={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"},n=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){let[e,i,o]=arguments;return n.apply(this,[e||null]).then(e=>{if(t.version<53&&!i)try{e.forEach(e=>{e.type=r[e.type]||e.type})}catch(t){if("TypeError"!==t.name)throw t;e.forEach((t,n)=>{e.set(n,Object.assign({},t,{type:r[t.type]||t.type}))})}return e}).then(i,o)}}function D(e){if(!("object"==typeof e&&e.RTCPeerConnection&&e.RTCRtpSender)||e.RTCRtpSender&&"getStats"in e.RTCRtpSender.prototype)return;let t=e.RTCPeerConnection.prototype.getSenders;t&&(e.RTCPeerConnection.prototype.getSenders=function(){let e=t.apply(this,[]);return e.forEach(e=>e._pc=this),e});let r=e.RTCPeerConnection.prototype.addTrack;r&&(e.RTCPeerConnection.prototype.addTrack=function(){let e=r.apply(this,arguments);return e._pc=this,e}),e.RTCRtpSender.prototype.getStats=function(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map)}}function M(e){if(!("object"==typeof e&&e.RTCPeerConnection&&e.RTCRtpSender)||e.RTCRtpSender&&"getStats"in e.RTCRtpReceiver.prototype)return;let t=e.RTCPeerConnection.prototype.getReceivers;t&&(e.RTCPeerConnection.prototype.getReceivers=function(){let e=t.apply(this,[]);return e.forEach(e=>e._pc=this),e}),d(e,"track",e=>(e.receiver._pc=e.srcElement,e)),e.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}}function O(e){!e.RTCPeerConnection||"removeStream"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.removeStream=function(e){u("removeStream","removeTrack"),this.getSenders().forEach(t=>{t.track&&e.getTracks().includes(t.track)&&this.removeTrack(t)})})}function I(e){e.DataChannel&&!e.RTCDataChannel&&(e.RTCDataChannel=e.DataChannel)}function L(e){if(!("object"==typeof e&&e.RTCPeerConnection))return;let t=e.RTCPeerConnection.prototype.addTransceiver;t&&(e.RTCPeerConnection.prototype.addTransceiver=function(){this.setParametersPromises=[];let e=arguments[1]&&arguments[1].sendEncodings;void 0===e&&(e=[]);let r=(e=[...e]).length>0;r&&e.forEach(e=>{if("rid"in e&&!/^[a-z0-9]{0,16}$/i.test(e.rid))throw TypeError("Invalid RID value provided.");if("scaleResolutionDownBy"in e&&!(parseFloat(e.scaleResolutionDownBy)>=1))throw RangeError("scale_resolution_down_by must be >= 1.0");if("maxFramerate"in e&&!(parseFloat(e.maxFramerate)>=0))throw 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t=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addStream=function(e){this._localStreams||(this._localStreams=[]),this._localStreams.includes(e)||this._localStreams.push(e),e.getAudioTracks().forEach(r=>t.call(this,r,e)),e.getVideoTracks().forEach(r=>t.call(this,r,e))},e.RTCPeerConnection.prototype.addTrack=function(e,...r){return r&&r.forEach(e=>{this._localStreams?this._localStreams.includes(e)||this._localStreams.push(e):this._localStreams=[e]}),t.apply(this,arguments)}}"removeStream"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.removeStream=function(e){this._localStreams||(this._localStreams=[]);let t=this._localStreams.indexOf(e);if(-1===t)return;this._localStreams.splice(t,1);let r=e.getTracks();this.getSenders().forEach(e=>{r.includes(e.track)&&this.removeTrack(e)})})}}function U(e){if("object"==typeof e&&e.RTCPeerConnection&&("getRemoteStreams"in 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r={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},n=t.splitLines(e)[0].split(" ");r.profile=n[2];for(let i=3;i<n.length;i++){let o=n[i],s=t.matchPrefix(e,"a=rtpmap:"+o+" ")[0];if(s){let n=t.parseRtpMap(s),i=t.matchPrefix(e,"a=fmtp:"+o+" ");switch(n.parameters=i.length?t.parseFmtp(i[0]):{},n.rtcpFeedback=t.matchPrefix(e,"a=rtcp-fb:"+o+" ").map(t.parseRtcpFb),r.codecs.push(n),n.name.toUpperCase()){case"RED":case"ULPFEC":r.fecMechanisms.push(n.name.toUpperCase())}}}t.matchPrefix(e,"a=extmap:").forEach(e=>{r.headerExtensions.push(t.parseExtmap(e))});let i=t.matchPrefix(e,"a=rtcp-fb:* ").map(t.parseRtcpFb);return r.codecs.forEach(e=>{i.forEach(t=>{e.rtcpFeedback.find(e=>e.type===t.type&&e.parameter===t.parameter)||e.rtcpFeedback.push(t)})}),r},t.writeRtpDescription=function(e,r){let n="";n+="m="+e+" ",n+=r.codecs.length>0?"9":"0",n+=" "+(r.profile||"UDP/TLS/RTP/SAVPF")+" ",n+=r.codecs.map(e=>void 0!==e.preferredPayloadType?e.preferredPayloadType:e.payloadType).join(" 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