hls.js
Version:
JavaScript HLS client using MediaSourceExtension
1 lines • 354 kB
JavaScript
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I=me(i,["vpcC"])[0];if(I&&I.length>6){var _=I[4],C=I[5],P=I[6]>>4&15;n+="."+Re(_)+"."+Re(C)+"."+Re(P)}break;case"av01":var x=me(i,["av1C"])[0];if(x&&x.length>2){var w=x[1]>>>5,O=31&x[1],F=x[2]>>>7?"H":"M",M=(64&x[2])>>6,N=(32&x[2])>>5,B=2===w&&M?N?12:10:M?10:8,U=(16&x[2])>>4,G=(8&x[2])>>3,V=(4&x[2])>>2,H=3&x[2];n+="."+w+"."+Re(O)+F+"."+Re(B)+"."+U+"."+G+V+H+"."+Re(1)+"."+Re(1)+"."+Re(1)+".0",t=Te("dav1",i)}}return{codec:n,encrypted:s,supplemental:t}}function Te(e,t){var r=me(t,["dvvC"]),i=r.length?r[0]:me(t,["dvcC"])[0];if(i){var a=i[2]>>1&127,n=i[2]<<5&32|i[3]>>3&31;return e+"."+Re(a)+"."+Re(n)}}function Se(e,t){for(var r=t+5;128&e[t++]&&t<r;);return t}function Le(e){return("0"+e.toString(16).toUpperCase()).slice(-2)}function Re(e){return(e<10?"0":"")+e}function Ae(e,t){me(e,["moov","trak"]).forEach((function(e){var r=me(e,["mdia","minf","stbl","stsd"])[0];if(r){var 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t=e.split("."),r=["0","111","01","01","01","0"],i=t.length;i>4&&i<10;i++)t[i]=r[i-4];return t.join(".")}return e}function We(e){var t=z(e)||{isTypeSupported:function(){return!1}};return{mpeg:t.isTypeSupported("audio/mpeg"),mp3:t.isTypeSupported('audio/mp4; codecs="mp3"'),ac3:!1}}function je(e){return e.replace(/^.+codecs=["']?([^"']+).*$/,"$1")}var qe=["NONE","TYPE-0","TYPE-1",null],Xe=["SDR","PQ","HLG"],ze="",Qe="YES",$e="v2";function Ze(e){var t=e.canSkipUntil,r=e.canSkipDateRanges,i=e.age;return t&&i<t/2?r?$e:Qe:ze}var Je=function(){function e(e,t,r){this.msn=void 0,this.part=void 0,this.skip=void 0,this.msn=e,this.part=t,this.skip=r}return e.prototype.addDirectives=function(e){var t=new self.URL(e);return void 0!==this.msn&&t.searchParams.set("_HLS_msn",this.msn.toString()),void 0!==this.part&&t.searchParams.set("_HLS_part",this.part.toString()),this.skip&&t.searchParams.set("_HLS_skip",this.skip),t.href},e}(),et=function(){function e(e){if(this._attrs=void 0,this.audioCodec=void 0,this.bitrate=void 0,this.codecSet=void 0,this.url=void 0,this.frameRate=void 0,this.height=void 0,this.id=void 0,this.name=void 0,this.supplemental=void 0,this.videoCodec=void 0,this.width=void 0,this.details=void 0,this.fragmentError=0,this.loadError=0,this.loaded=void 0,this.realBitrate=0,this.supportedPromise=void 0,this.supportedResult=void 0,this._avgBitrate=0,this._audioGroups=void 0,this._subtitleGroups=void 0,this._urlId=0,this.url=[e.url],this._attrs=[e.attrs],this.bitrate=e.bitrate,e.details&&(this.details=e.details),this.id=e.id||0,this.name=e.name,this.width=e.width||0,this.height=e.height||0,this.frameRate=e.attrs.optionalFloat("FRAME-RATE",0),this._avgBitrate=e.attrs.decimalInteger("AVERAGE-BANDWIDTH"),this.audioCodec=e.audioCodec,this.videoCodec=e.videoCodec,this.codecSet=[e.videoCodec,e.audioCodec].filter((function(e){return!!e})).map((function(e){return e.substring(0,4)})).join(","),"supplemental"in e){var t;this.supplemental=e.supplemental;var r=null==(t=e.supplemental)?void 0:t.videoCodec;r&&r!==e.videoCodec&&(this.codecSet+=","+r.substring(0,4))}this.addGroupId("audio",e.attrs.AUDIO),this.addGroupId("text",e.attrs.SUBTITLES)}var t=e.prototype;return t.hasAudioGroup=function(e){return tt(this._audioGroups,e)},t.hasSubtitleGroup=function(e){return tt(this._subtitleGroups,e)},t.addGroupId=function(e,t){if(t)if("audio"===e){var r=this._audioGroups;r||(r=this._audioGroups=[]),-1===r.indexOf(t)&&r.push(t)}else if("text"===e){var i=this._subtitleGroups;i||(i=this._subtitleGroups=[]),-1===i.indexOf(t)&&i.push(t)}},t.addFallback=function(){},i(e,[{key:"maxBitrate",get:function(){return Math.max(this.realBitrate,this.bitrate)}},{key:"averageBitrate",get:function(){return this._avgBitrate||this.realBitrate||this.bitrate}},{key:"attrs",get:function(){return this._attrs[0]}},{key:"codecs",get:function(){return this.attrs.CODECS||""}},{key:"pathwayId",get:function(){return this.attrs["PATHWAY-ID"]||"."}},{key:"videoRange",get:function(){return this.attrs["VIDEO-RANGE"]||"SDR"}},{key:"score",get:function(){return this.attrs.optionalFloat("SCORE",0)}},{key:"uri",get:function(){return this.url[0]||""}},{key:"audioGroups",get:function(){return this._audioGroups}},{key:"subtitleGroups",get:function(){return this._subtitleGroups}},{key:"urlId",get:function(){return 0},set:function(e){}},{key:"audioGroupIds",get:function(){return this.audioGroups?[this.audioGroupId]:void 0}},{key:"textGroupIds",get:function(){return this.subtitleGroups?[this.textGroupId]:void 0}},{key:"audioGroupId",get:function(){var e;return null==(e=this.audioGroups)?void 0:e[0]}},{key:"textGroupId",get:function(){var e;return null==(e=this.subtitleGroups)?void 0:e[0]}}])}();function tt(e,t){return!(!t||!e)&&-1!==e.indexOf(t)}function rt(e,t){var r=!1,i=[];if(e&&(r="SDR"!==e,i=[e]),t){var a="SDR"!==(i=t.allowedVideoRanges||Xe.slice(0)).join("")&&!t.videoCodec;(r=void 0!==t.preferHDR?t.preferHDR:a&&function(){if("function"==typeof matchMedia){var e=matchMedia("(dynamic-range: high)"),t=matchMedia("bad query");if(e.media!==t.media)return!0===e.matches}return!1}())||(i=["SDR"])}return{preferHDR:r,allowedVideoRanges:i}}var it=function(e,t){return JSON.stringify(e,function(e){var t=new WeakSet;return function(r,i){if(e&&(i=e(r,i)),"object"==typeof i&&null!==i){if(t.has(i))return;t.add(i)}return i}}(t))};function at(e,t){j.log('[abr] start candidates with "'+e+'" ignored because '+t)}function nt(e){return e.reduce((function(e,t){var r=e.groups[t.groupId];r||(r=e.groups[t.groupId]={tracks:[],channels:{2:0},hasDefault:!1,hasAutoSelect:!1}),r.tracks.push(t);var i=t.channels||"2";return r.channels[i]=(r.channels[i]||0)+1,r.hasDefault=r.hasDefault||t.default,r.hasAutoSelect=r.hasAutoSelect||t.autoselect,r.hasDefault&&(e.hasDefaultAudio=!0),r.hasAutoSelect&&(e.hasAutoSelectAudio=!0),e}),{hasDefaultAudio:!1,hasAutoSelectAudio:!1,groups:{}})}function st(e,t){var r;return!!e&&e!==(null==(r=t.loadLevelObj)?void 0:r.uri)}var ot=function(e){function t(t){var r;return(r=e.call(this,"abr",t.logger)||this).hls=void 0,r.lastLevelLoadSec=0,r.lastLoadedFragLevel=-1,r.firstSelection=-1,r._nextAutoLevel=-1,r.nextAutoLevelKey="",r.audioTracksByGroup=null,r.codecTiers=null,r.timer=-1,r.fragCurrent=null,r.partCurrent=null,r.bitrateTestDelay=0,r.rebufferNotice=-1,r.supportedCache={},r.bwEstimator=void 0,r._abandonRulesCheck=function(e){var t,i=r,a=i.fragCurrent,n=i.partCurrent,s=i.hls,o=s.autoLevelEnabled,l=s.media;if(a&&l){var u=performance.now(),d=n?n.stats:a.stats,h=n?n.duration:a.duration,f=u-d.loading.start,c=s.minAutoLevel,v=a.level,g=r._nextAutoLevel;if(d.aborted||d.loaded&&d.loaded===d.total||v<=c)return r.clearTimer(),void(r._nextAutoLevel=-1);if(o){var m=g>-1&&g!==v,p=!!e||m;if(p||!l.paused&&l.playbackRate&&l.readyState){var y=s.mainForwardBufferInfo;if(p||null!==y){var E=r.bwEstimator.getEstimateTTFB(),T=Math.abs(l.playbackRate);if(!(f<=Math.max(E,h/(2*T)*1e3))){var S=y?y.len/T:0,R=d.loading.first?d.loading.first-d.loading.start:-1,A=d.loaded&&R>-1,b=r.getBwEstimate(),k=s.levels,I=k[v],_=Math.max(d.loaded,Math.round(h*(a.bitrate||I.averageBitrate)/8)),C=A?f-R:f;C<1&&A&&(C=Math.min(f,8*d.loaded/b));var P=A?1e3*d.loaded/C:0,x=E/1e3,w=P?(_-d.loaded)/P:8*_/b+x;if(!(w<=S)){var O,F=P?8*P:b,M=!0===(null==(t=(null==e?void 0:e.details)||r.hls.latestLevelDetails)?void 0:t.live),N=r.hls.config.abrBandWidthUpFactor,B=Number.POSITIVE_INFINITY;for(O=v-1;O>c;O--){var U=k[O].maxBitrate,G=!k[O].details||M;if((B=r.getTimeToLoadFrag(x,F,h*U,G))<Math.min(S,h+x))break}if(!(B>=w||B>10*h)){A?r.bwEstimator.sample(f-Math.min(E,R),d.loaded):r.bwEstimator.sampleTTFB(f);var V=k[O].maxBitrate;r.getBwEstimate()*N>V&&r.resetEstimator(V);var H=r.findBestLevel(V,c,O,0,S,1,1);H>-1&&(O=H),r.warn("Fragment "+a.sn+(n?" part "+n.index:"")+" of level "+v+" is loading too slowly;\n Fragment duration: "+a.duration.toFixed(3)+"\n Time to underbuffer: "+S.toFixed(3)+" s\n Estimated load time for current fragment: "+w.toFixed(3)+" s\n Estimated load time for down switch fragment: "+B.toFixed(3)+" s\n TTFB estimate: "+(0|R)+" ms\n Current BW estimate: "+(L(b)?0|b:"Unknown")+" bps\n New BW estimate: "+(0|r.getBwEstimate())+" bps\n Switching to level "+O+" @ "+(0|V)+" bps"),s.nextLoadLevel=s.nextAutoLevel=O,r.clearTimer();var K=function(){if(r.clearTimer(),r.fragCurrent===a&&r.hls.loadLevel===O&&O>0){var e=r.getStarvationDelay();if(r.warn("Aborting inflight request "+(O>0?"and switching down":"")+"\n Fragment duration: "+a.duration.toFixed(3)+" s\n Time to underbuffer: "+e.toFixed(3)+" s"),a.abortRequests(),r.fragCurrent=r.partCurrent=null,O>c){var t=r.findBestLevel(r.hls.levels[c].bitrate,c,O,0,e,1,1);-1===t&&(t=c),r.hls.nextLoadLevel=r.hls.nextAutoLevel=t,r.resetEstimator(r.hls.levels[t].bitrate)}}};m||w>2*B?K():r.timer=self.setInterval(K,1e3*B),s.trigger(D.FRAG_LOAD_EMERGENCY_ABORTED,{frag:a,part:n,stats:d})}}}}}}}},r.hls=t,r.bwEstimator=r.initEstimator(),r.registerListeners(),r}o(t,e);var r=t.prototype;return r.resetEstimator=function(e){e&&(this.log("setting initial bwe to "+e),this.hls.config.abrEwmaDefaultEstimate=e),this.firstSelection=-1,this.bwEstimator=this.initEstimator()},r.initEstimator=function(){var e=this.hls.config;return new M(e.abrEwmaSlowVoD,e.abrEwmaFastVoD,e.abrEwmaDefaultEstimate)},r.registerListeners=function(){var e=this.hls;e.on(D.MANIFEST_LOADING,this.onManifestLoading,this),e.on(D.FRAG_LOADING,this.onFragLoading,this),e.on(D.FRAG_LOADED,this.onFragLoaded,this),e.on(D.FRAG_BUFFERED,this.onFragBuffered,this),e.on(D.LEVEL_SWITCHING,this.onLevelSwitching,this),e.on(D.LEVEL_LOADED,this.onLevelLoaded,this),e.on(D.LEVELS_UPDATED,this.onLevelsUpdated,this),e.on(D.MAX_AUTO_LEVEL_UPDATED,this.onMaxAutoLevelUpdated,this),e.on(D.ERROR,this.onError,this)},r.unregisterListeners=function(){var e=this.hls;e&&(e.off(D.MANIFEST_LOADING,this.onManifestLoading,this),e.off(D.FRAG_LOADING,this.onFragLoading,this),e.off(D.FRAG_LOADED,this.onFragLoaded,this),e.off(D.FRAG_BUFFERED,this.onFragBuffered,this),e.off(D.LEVEL_SWITCHING,this.onLevelSwitching,this),e.off(D.LEVEL_LOADED,this.onLevelLoaded,this),e.off(D.LEVELS_UPDATED,this.onLevelsUpdated,this),e.off(D.MAX_AUTO_LEVEL_UPDATED,this.onMaxAutoLevelUpdated,this),e.off(D.ERROR,this.onError,this))},r.destroy=function(){this.unregisterListeners(),this.clearTimer(),this.hls=this._abandonRulesCheck=this.supportedCache=null,this.fragCurrent=this.partCurrent=null},r.onManifestLoading=function(e,t){this.lastLoadedFragLevel=-1,this.firstSelection=-1,this.lastLevelLoadSec=0,this.supportedCache={},this.fragCurrent=this.partCurrent=null,this.onLevelsUpdated(),this.clearTimer()},r.onLevelsUpdated=function(){this.lastLoadedFragLevel>-1&&this.fragCurrent&&(this.lastLoadedFragLevel=this.fragCurrent.level),this._nextAutoLevel=-1,this.onMaxAutoLevelUpdated(),this.codecTiers=null,this.audioTracksByGroup=null},r.onMaxAutoLevelUpdated=function(){this.firstSelection=-1,this.nextAutoLevelKey=""},r.onFragLoading=function(e,t){var r,i=t.frag;this.ignoreFragment(i)||(i.bitrateTest||(this.fragCurrent=i,this.partCurrent=null!=(r=t.part)?r:null),this.clearTimer(),this.timer=self.setInterval(this._abandonRulesCheck,100))},r.onLevelSwitching=function(e,t){this.clearTimer()},r.onError=function(e,t){if(!t.fatal)switch(t.details){case k.BUFFER_ADD_CODEC_ERROR:case k.BUFFER_APPEND_ERROR:this.lastLoadedFragLevel=-1,this.firstSelection=-1;break;case k.FRAG_LOAD_TIMEOUT:var r=t.frag,i=this.fragCurrent,a=this.partCurrent;if(r&&i&&r.sn===i.sn&&r.level===i.level){var n=performance.now(),s=a?a.stats:r.stats,o=n-s.loading.start,l=s.loading.first?s.loading.first-s.loading.start:-1;if(s.loaded&&l>-1){var u=this.bwEstimator.getEstimateTTFB();this.bwEstimator.sample(o-Math.min(u,l),s.loaded)}else this.bwEstimator.sampleTTFB(o)}}},r.getTimeToLoadFrag=function(e,t,r,i){return e+r/t+(i?e+this.lastLevelLoadSec:0)},r.onLevelLoaded=function(e,t){var r=this.hls.config,i=t.stats.loading,a=i.end-i.first;L(a)&&(this.lastLevelLoadSec=a/1e3),t.details.live?this.bwEstimator.update(r.abrEwmaSlowLive,r.abrEwmaFastLive):this.bwEstimator.update(r.abrEwmaSlowVoD,r.abrEwmaFastVoD),this.timer>-1&&this._abandonRulesCheck(t.levelInfo)},r.onFragLoaded=function(e,t){var r=t.frag,i=t.part,a=i?i.stats:r.stats;if(r.type===x&&this.bwEstimator.sampleTTFB(a.loading.first-a.loading.start),!this.ignoreFragment(r)){if(this.clearTimer(),r.level===this._nextAutoLevel&&(this._nextAutoLevel=-1),this.firstSelection=-1,this.hls.config.abrMaxWithRealBitrate){var n=i?i.duration:r.duration,s=this.hls.levels[r.level],o=(s.loaded?s.loaded.bytes:0)+a.loaded,l=(s.loaded?s.loaded.duration:0)+n;s.loaded={bytes:o,duration:l},s.realBitrate=Math.round(8*o/l)}if(r.bitrateTest){var u={stats:a,frag:r,part:i,id:r.type};this.onFragBuffered(D.FRAG_BUFFERED,u),r.bitrateTest=!1}else this.lastLoadedFragLevel=r.level}},r.onFragBuffered=function(e,t){var r=t.frag,i=t.part,a=null!=i&&i.stats.loaded?i.stats:r.stats;if(!a.aborted&&!this.ignoreFragment(r)){var n=a.parsing.end-a.loading.start-Math.min(a.loading.first-a.loading.start,this.bwEstimator.getEstimateTTFB());this.bwEstimator.sample(n,a.loaded),a.bwEstimate=this.getBwEstimate(),r.bitrateTest?this.bitrateTestDelay=n/1e3:this.bitrateTestDelay=0}},r.ignoreFragment=function(e){return e.type!==x||"initSegment"===e.sn},r.clearTimer=function(){this.timer>-1&&(self.clearInterval(this.timer),this.timer=-1)},r.getAutoLevelKey=function(){return this.getBwEstimate()+"_"+this.getStarvationDelay().toFixed(2)},r.getNextABRAutoLevel=function(){var e=this.fragCurrent,t=this.partCurrent,r=this.hls;if(r.levels.length<=1)return r.loadLevel;var i=r.maxAutoLevel,a=r.config,n=r.minAutoLevel,s=t?t.duration:e?e.duration:0,o=this.getBwEstimate(),l=this.getStarvationDelay(),u=a.abrBandWidthFactor,d=a.abrBandWidthUpFactor;if(l){var h=this.findBestLevel(o,n,i,l,0,u,d);if(h>=0)return this.rebufferNotice=-1,h}var f=s?Math.min(s,a.maxStarvationDelay):a.maxStarvationDelay;if(!l){var c=this.bitrateTestDelay;c&&(f=(s?Math.min(s,a.maxLoadingDelay):a.maxLoadingDelay)-c,this.info("bitrate test took "+Math.round(1e3*c)+"ms, set first fragment max fetchDuration to "+Math.round(1e3*f)+" ms"),u=d=1)}var v=this.findBestLevel(o,n,i,l,f,u,d);if(this.rebufferNotice!==v&&(this.rebufferNotice=v,this.info((l?"rebuffering expected":"buffer is empty")+", optimal quality level "+v)),v>-1)return v;var g=r.levels[n],m=r.loadLevelObj;return m&&(null==g?void 0:g.bitrate)<m.bitrate?n:r.loadLevel},r.getStarvationDelay=function(){var e=this.hls,t=e.media;if(!t)return 1/0;var r=t&&0!==t.playbackRate?Math.abs(t.playbackRate):1,i=e.mainForwardBufferInfo;return(i?i.len:0)/r},r.getBwEstimate=function(){return this.bwEstimator.canEstimate()?this.bwEstimator.getEstimate():this.hls.config.abrEwmaDefaultEstimate},r.findBestLevel=function(e,t,r,i,a,n,s){var o,l=this,u=i+a,d=this.lastLoadedFragLevel,h=-1===d?this.hls.firstLevel:d,f=this.fragCurrent,c=this.partCurrent,v=this.hls,g=v.levels,m=v.allAudioTracks,p=v.loadLevel,y=v.config;if(1===g.length)return 0;var E,T=g[h],S=!(null==(o=this.hls.latestLevelDetails)||!o.live),R=-1===p||-1===d,A="SDR",b=(null==T?void 0:T.frameRate)||0,k=y.audioPreference,D=y.videoPreference,I=(this.audioTracksByGroup||(this.audioTracksByGroup=nt(m)),-1);if(R){if(-1!==this.firstSelection)return this.firstSelection;var _=this.codecTiers||(this.codecTiers=function(e,t,r,i){return e.slice(r,i+1).reduce((function(e,t,r){if(!t.codecSet)return e;var i=t.audioGroups,a=e[t.codecSet];a||(e[t.codecSet]=a={minBitrate:1/0,minHeight:1/0,minFramerate:1/0,minIndex:r,maxScore:0,videoRanges:{SDR:0},channels:{2:0},hasDefaultAudio:!i,fragmentError:0}),a.minBitrate=Math.min(a.minBitrate,t.bitrate);var n=Math.min(t.height,t.width);return a.minHeight=Math.min(a.minHeight,n),a.minFramerate=Math.min(a.minFramerate,t.frameRate),a.minIndex=Math.min(a.minIndex,r),a.maxScore=Math.max(a.maxScore,t.score),a.fragmentError+=t.fragmentError,a.videoRanges[t.videoRange]=(a.videoRanges[t.videoRange]||0)+1,e}),{})}(g,0,t,r)),C=function(e,t,r,i,a){for(var n=Object.keys(e),s=null==i?void 0:i.channels,o=null==i?void 0:i.audioCodec,l=null==a?void 0:a.videoCodec,u=s&&2===parseInt(s),d=!1,h=!1,f=1/0,c=1/0,v=1/0,g=1/0,m=0,p=[],y=rt(t,a),E=y.preferHDR,T=y.allowedVideoRanges,S=function(){var t=e[n[R]];d||(d=t.channels[2]>0),f=Math.min(f,t.minHeight),c=Math.min(c,t.minFramerate),v=Math.min(v,t.minBitrate),T.filter((function(e){return t.videoRanges[e]>0})).length>0&&(h=!0)},R=n.length;R--;)S();f=L(f)?f:0,c=L(c)?c:0;var A=Math.max(1080,f),b=Math.max(30,c);v=L(v)?v:r,r=Math.max(v,r),h||(t=void 0);var k=n.length>1;return{codecSet:n.reduce((function(t,i){var a=e[i];if(i===t)return t;if(p=h?T.filter((function(e){return a.videoRanges[e]>0})):[],k){if(a.minBitrate>r)return at(i,"min bitrate of "+a.minBitrate+" > current estimate of "+r),t;if(!a.hasDefaultAudio)return at(i,"no renditions with default or auto-select sound found"),t;if(o&&i.indexOf(o.substring(0,4))%5!=0)return at(i,'audio codec preference "'+o+'" not found'),t;if(s&&!u){if(!a.channels[s])return at(i,"no renditions with "+s+" channel sound found (channels options: "+Object.keys(a.channels)+")"),t}else if((!o||u)&&d&&0===a.channels[2])return at(i,"no renditions with stereo sound found"),t;if(a.minHeight>A)return at(i,"min resolution of "+a.minHeight+" > maximum of "+A),t;if(a.minFramerate>b)return at(i,"min framerate of "+a.minFramerate+" > maximum of "+b),t;if(!p.some((function(e){return a.videoRanges[e]>0})))return at(i,"no variants with VIDEO-RANGE of "+it(p)+" found"),t;if(l&&i.indexOf(l.substring(0,4))%5!=0)return at(i,'video codec preference "'+l+'" not found'),t;if(a.maxScore<m)return at(i,"max score of "+a.maxScore+" < selected max of "+m),t}return t&&(Be(i)>=Be(t)||a.fragmentError>e[t].fragmentError)?t:(g=a.minIndex,m=a.maxScore,i)}),void 0),videoRanges:p,preferHDR:E,minFramerate:c,minBitrate:v,minIndex:g}}(_,A,e,k,D),P=C.codecSet,x=C.videoRanges,w=C.minFramerate,O=C.minBitrate,F=C.minIndex,M=C.preferHDR;I=F,E=P,A=M?x[x.length-1]:x[0],b=w,e=Math.max(e,O),this.log("picked start tier "+it(C))}else E=null==T?void 0:T.codecSet,A=null==T?void 0:T.videoRange;for(var N,B=c?c.duration:f?f.duration:0,U=this.bwEstimator.getEstimateTTFB()/1e3,G=[],V=function(){var t,o=g[H],f=H>h;if(!o)return 0;if((E&&o.codecSet!==E||A&&o.videoRange!==A||f&&b>o.frameRate||!f&&b>0&&b<o.frameRate||null!=(t=o.supportedResult)&&null!=(t=t.decodingInfoResults)&&t.some((function(e){return!1===e.smooth})))&&(!R||H!==I))return G.push(H),0;var v,m=o.details,y=(c?null==m?void 0:m.partTarget:null==m?void 0:m.averagetargetduration)||B;v=f?s*e:n*e;var T=B&&i>=2*B&&0===a?o.averageBitrate:o.maxBitrate,k=l.getTimeToLoadFrag(U,v,T*y,void 0===m);if(v>=T&&(H===d||0===o.loadError&&0===o.fragmentError)&&(k<=U||!L(k)||S&&!l.bitrateTestDelay||k<u)){var D=l.forcedAutoLevel;return H===p||-1!==D&&D===p||(G.length&&l.trace("Skipped level(s) "+G.join(",")+" of "+r+' max with CODECS and VIDEO-RANGE:"'+g[G[0]].codecs+'" '+g[G[0]].videoRange+'; not compatible with "'+E+'" '+A),l.info("switch candidate:"+h+"->"+H+" adjustedbw("+Math.round(v)+")-bitrate="+Math.round(v-T)+" ttfb:"+U.toFixed(1)+" avgDuration:"+y.toFixed(1)+" maxFetchDuration:"+u.toFixed(1)+" fetchDuration:"+k.toFixed(1)+" firstSelection:"+R+" codecSet:"+o.codecSet+" videoRange:"+o.videoRange+" hls.loadLevel:"+p)),R&&(l.firstSelection=H),{v:H}}},H=r;H>=t;H--)if(0!==(N=V())&&N)return N.v;return-1},r.deriveNextAutoLevel=function(e){var t=this.hls,r=t.maxAutoLevel,i=t.minAutoLevel;return Math.min(Math.max(e,i),r)},i(t,[{key:"firstAutoLevel",get:function(){var e=t