swarmcloud-hls
Version:
Let your viewers become your unlimitedly scalable CDN.
1 lines • 551 kB
JavaScript
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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 Xe(this._audioGroups,e)},t.hasSubtitleGroup=function(e){return Xe(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 Xe(e,t){return!(!t||!e)&&-1!==e.indexOf(t)}var Qe=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 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T=y?y.len/S:0,L=u.loading.first?u.loading.first-u.loading.start:-1,b=u.loaded&&L>-1,R=r.getBwEstimate(),A=a.levels,w=A[g],I=Math.max(u.loaded,Math.round(d*(s.bitrate||w.averageBitrate)/8)),D=b?c-L:c;D<1&&b&&(D=Math.min(c,8*u.loaded/R));var C=b?1e3*u.loaded/D:0,k=E/1e3,M=C?(I-u.loaded)/C:8*I/R+k;if(!(M<=T)){var x,O=C?8*C:R,N=!0===(null==(t=(null==e?void 0:e.details)||r.hls.latestLevelDetails)?void 0:t.live),F=r.hls.config.abrBandWidthUpFactor,B=Number.POSITIVE_INFINITY;for(x=g-1;x>f;x--){var U=A[x].maxBitrate,G=!A[x].details||N;if((B=r.getTimeToLoadFrag(k,O,d*U,G))<Math.min(T,d+k))break}if(!(B>=M||B>10*d)){b?r.bwEstimator.sample(c-Math.min(E,L),u.loaded):r.bwEstimator.sampleTTFB(c);var H=A[x].maxBitrate;r.getBwEstimate()*F>H&&r.resetEstimator(H);var $=r.findBestLevel(H,f,x,0,T,1,1);$>-1&&(x=$),r.warn("Fragment "+s.sn+(n?" part "+n.index:"")+" of level "+g+" is loading too slowly;\n Fragment duration: "+s.duration.toFixed(3)+"\n Time to underbuffer: "+T.toFixed(3)+" s\n Estimated load time for current fragment: "+M.toFixed(3)+" s\n Estimated load time for down switch fragment: "+B.toFixed(3)+" s\n TTFB estimate: "+(0|L)+" ms\n Current BW estimate: "+(_(R)?0|R:"Unknown")+" bps\n New BW estimate: "+(0|r.getBwEstimate())+" bps\n Switching to level "+x+" @ "+(0|H)+" bps"),a.nextLoadLevel=a.nextAutoLevel=x,r.clearTimer();var W=function(){if(r.clearTimer(),r.fragCurrent===s&&r.hls.loadLevel===x&&x>0){var e=r.getStarvationDelay();if(r.warn("Aborting inflight request "+(x>0?"and switching down":"")+"\n Fragment duration: "+s.duration.toFixed(3)+" s\n Time to underbuffer: "+e.toFixed(3)+" s"),s.abortRequests(),r.fragCurrent=r.partCurrent=null,x>f){var t=r.findBestLevel(r.hls.levels[f].bitrate,f,x,0,e,1,1);-1===t&&(t=f),r.hls.nextLoadLevel=r.hls.nextAutoLevel=t,r.resetEstimator(r.hls.levels[t].bitrate)}}};m||M>2*B?W():r.timer=self.setInterval(W,1e3*B),a.trigger(P.FRAG_LOAD_EMERGENCY_ABORTED,{frag:s,part:n,stats:u})}}}}}}}},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 N(e.abrEwmaSlowVoD,e.abrEwmaFastVoD,e.abrEwmaDefaultEstimate)},r.registerListeners=function(){var e=this.hls;e.on(P.MANIFEST_LOADING,this.onManifestLoading,this),e.on(P.FRAG_LOADING,this.onFragLoading,this),e.on(P.FRAG_LOADED,this.onFragLoaded,this),e.on(P.FRAG_BUFFERED,this.onFragBuffered,this),e.on(P.LEVEL_SWITCHING,this.onLevelSwitching,this),e.on(P.LEVEL_LOADED,this.onLevelLoaded,this),e.on(P.LEVELS_UPDATED,this.onLevelsUpdated,this),e.on(P.MAX_AUTO_LEVEL_UPDATED,this.onMaxAutoLevelUpdated,this),e.on(P.ERROR,this.onError,this)},r.unregisterListeners=function(){var e=this.hls;e&&(e.off(P.MANIFEST_LOADING,this.onManifestLoading,this),e.off(P.FRAG_LOADING,this.onFragLoading,this),e.off(P.FRAG_LOADED,this.onFragLoaded,this),e.off(P.FRAG_BUFFERED,this.onFragBuffered,this),e.off(P.LEVEL_SWITCHING,this.onLevelSwitching,this),e.off(P.LEVEL_LOADED,this.onLevelLoaded,this),e.off(P.LEVELS_UPDATED,this.onLevelsUpdated,this),e.off(P.MAX_AUTO_LEVEL_UPDATED,this.onMaxAutoLevelUpdated,this),e.off(P.ERROR,this.onError,this))},r.destroy=function(){this.unregisterListeners(),this.clearTimer(),this.hls=this._abandonRulesCheck=null,this.fragCurrent=this.partCurrent=null},r.onManifestLoading=function(e,t){this.lastLoadedFragLevel=-1,this.firstSelection=-1,this.lastLevelLoadSec=0,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 A.BUFFER_ADD_CODEC_ERROR:case A.BUFFER_APPEND_ERROR:this.lastLoadedFragLevel=-1,this.firstSelection=-1;break;case A.FRAG_LOAD_TIMEOUT:var r=t.frag,i=this.fragCurrent,s=this.partCurrent;if(r&&i&&r.sn===i.sn&&r.level===i.level){var n=performance.now(),a=s?s.stats:r.stats,o=n-a.loading.start,l=a.loading.first?a.loading.first-a.loading.start:-1;if(a.loaded&&l>-1){var h=this.bwEstimator.getEstimateTTFB();this.bwEstimator.sample(o-Math.min(h,l),a.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,s=i.end-i.first;_(s)&&(this.lastLevelLoadSec=s/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,s=i?i.stats:r.stats;if(r.type===k&&this.bwEstimator.sampleTTFB(s.loading.first-s.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,a=this.hls.levels[r.level],o=(a.loaded?a.loaded.bytes:0)+s.loaded,l=(a.loaded?a.loaded.duration:0)+n;a.loaded={bytes:o,duration:l},a.realBitrate=Math.round(8*o/l)}if(r.bitrateTest){var h={stats:s,frag:r,part:i,id:r.type};t