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Please seek to e.seekTime and try again",seekTime:s.estimatedStart});var a={mediaSeconds:n},o=function(e,t){if(!t.dateTimeObject)return null;var i=t.videoTimingInfo.transmuxerPrependedSeconds,n=e-(t.videoTimingInfo.transmuxedPresentationStart+i);return new Date(t.dateTimeObject.getTime()+1e3*n)}(n,s.segment);return o&&(a.programDateTime=o.toISOString()),r(null,a)},Cc=function e(t){var i=t.programTime,n=t.playlist,r=t.retryCount,s=void 0===r?2:r,a=t.seekTo,o=t.pauseAfterSeek,u=void 0===o||o,l=t.tech,c=t.callback;if(!c)throw new Error("seekToProgramTime: callback must be provided");if(void 0===i||!n||!a)return c({message:"seekToProgramTime: programTime, seekTo and playlist must be provided"});if(!n.endList&&!l.hasStarted_)return c({message:"player must be playing a live stream to start buffering"});if(!function(e){if(!e.segments||0===e.segments.length)return!1;for(var t=0;tnew Date(o.getTime()+1e3*u)?null:(i>o&&(n=a),{segment:n,estimatedStart:n.videoTimingInfo?n.videoTimingInfo.transmuxedPresentationStart:cc.duration(t,t.mediaSequence+t.segments.indexOf(n)),type:n.videoTimingInfo?"accurate":"estimate"})}(i,n);if(!h)return c({message:i+" was not found in the stream"});var d=h.segment,p=function(e,t){var i=void 0,n=void 0;try{i=new Date(e),n=new Date(t)}catch(e){}var r=i.getTime();return(n.getTime()-r)/1e3}(d.dateTimeObject,i);if("estimate"===h.type)return 0===s?c({message:i+" is not buffered yet. Try again"}):(a(h.estimatedStart+p),void l.one("seeked",(function(){e({programTime:i,playlist:n,retryCount:s-1,seekTo:a,pauseAfterSeek:u,tech:l,callback:c})})));var f=d.start+p;l.one("seeked",(function(){return c(null,l.currentTime())})),u&&l.pause(),a(f)},wc=function(e,t){var i=[],n=void 0;if(e&&e.length)for(n=0;n=t}))},xc=function(e,t){return wc(e,(function(e){return e-1/30>=t}))},Ac=function(e){var t=[];if(!e||!e.length)return"";for(var i=0;i "+e.end(i));return t.join(", ")},Ic=function(e){for(var t=[],i=0;i=e&&i.removeCue(r)},Lc=function(e){return isNaN(e)||Math.abs(e)===1/0?Number.MAX_VALUE:e},Oc=function(e,t,i){var n=K.WebKitDataCue||K.VTTCue;if(t&&t.forEach((function(e){var t=e.stream;this.inbandTextTracks_[t].addCue(new n(e.startTime+this.timestampOffset,e.endTime+this.timestampOffset,e.text))}),e),i){var r=Lc(e.mediaSource_.duration);if(i.forEach((function(e){var t=e.cueTime+this.timestampOffset;!("number"!=typeof t||K.isNaN(t)||t<0)&&t<1/0&&e.frames.forEach((function(e){var i=new n(t,t,e.value||e.url||e.data||"");i.frame=e,i.value=e,function(e){Object.defineProperties(e.frame,{id:{get:function(){return Il.log.warn("cue.frame.id is deprecated. Use cue.value.key instead."),e.value.key}},value:{get:function(){return Il.log.warn("cue.frame.value is deprecated. Use cue.value.data instead."),e.value.data}},privateData:{get:function(){return Il.log.warn("cue.frame.privateData is deprecated. Use cue.value.data instead."),e.value.data}}})}(i),this.metadataTrack_.addCue(i)}),this)}),e),e.metadataTrack_&&e.metadataTrack_.cues&&e.metadataTrack_.cues.length){for(var s=e.metadataTrack_.cues,a=[],o=0;o-1)},this.trigger=function(t){var i,n,r,s;if(i=e[t])if(2===arguments.length)for(r=i.length,n=0;n>>1,e.samplingfrequencyindex<<7|e.channelcount<<3,6,1,2]))},g=function(e){return t(k.hdlr,I[e])},m=function(e){var i=new Uint8Array([0,0,0,0,0,0,0,2,0,0,0,3,0,1,95,144,e.duration>>>24&255,e.duration>>>16&255,e.duration>>>8&255,255&e.duration,85,196,0,0]);return e.samplerate&&(i[12]=e.samplerate>>>24&255,i[13]=e.samplerate>>>16&255,i[14]=e.samplerate>>>8&255,i[15]=255&e.samplerate),t(k.mdhd,i)},f=function(e){return t(k.mdia,m(e),g(e.type),o(e))},a=function(e){return t(k.mfhd,new Uint8Array([0,0,0,0,(4278190080&e)>>24,(16711680&e)>>16,(65280&e)>>8,255&e]))},o=function(e){return t(k.minf,"video"===e.type?t(k.vmhd,P):t(k.smhd,L),n(),y(e))},u=function(e,i){for(var n=[],r=i.length;r--;)n[r]=b(i[r]);return t.apply(null,[k.moof,a(e)].concat(n))},l=function(e){for(var i=e.length,n=[];i--;)n[i]=d(e[i]);return t.apply(null,[k.moov,h(4294967295)].concat(n).concat(c(e)))},c=function(e){for(var i=e.length,n=[];i--;)n[i]=T(e[i]);return t.apply(null,[k.mvex].concat(n))},h=function(e){var i=new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,2,0,1,95,144,(4278190080&e)>>24,(16711680&e)>>16,(65280&e)>>8,255&e,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255]);return t(k.mvhd,i)},v=function(e){var i,n,r=e.samples||[],s=new Uint8Array(4+r.length);for(n=0;n>>8),a.push(255&r[i].byteLength),a=a.concat(Array.prototype.slice.call(r[i]));for(i=0;i>>8),o.push(255&s[i].byteLength),o=o.concat(Array.prototype.slice.call(s[i]));if(n=[k.avc1,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,(65280&e.width)>>8,255&e.width,(65280&e.height)>>8,255&e.height,0,72,0,0,0,72,0,0,0,0,0,0,0,1,19,118,105,100,101,111,106,115,45,99,111,110,116,114,105,98,45,104,108,115,0,0,0,0,0,0,0,0,0,0,0,0,0,24,17,17]),t(k.avcC,new Uint8Array([1,e.profileIdc,e.profileCompatibility,e.levelIdc,255].concat([r.length],a,[s.length],o))),t(k.btrt,new Uint8Array([0,28,156,128,0,45,198,192,0,45,198,192]))],e.sarRatio){var u=e.sarRatio[0],l=e.sarRatio[1];n.push(t(k.pasp,new Uint8Array([(4278190080&u)>>24,(16711680&u)>>16,(65280&u)>>8,255&u,(4278190080&l)>>24,(16711680&l)>>16,(65280&l)>>8,255&l])))}return t.apply(null,n)},B=function(e){return t(k.mp4a,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,(65280&e.channelcount)>>8,255&e.channelcount,(65280&e.samplesize)>>8,255&e.samplesize,0,0,0,0,(65280&e.samplerate)>>8,255&e.samplerate,0,0]),r(e))},p=function(e){var i=new Uint8Array([0,0,0,7,0,0,0,0,0,0,0,0,(4278190080&e.id)>>24,(16711680&e.id)>>16,(65280&e.id)>>8,255&e.id,0,0,0,0,(4278190080&e.duration)>>24,(16711680&e.duration)>>16,(65280&e.duration)>>8,255&e.duration,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,(65280&e.width)>>8,255&e.width,0,0,(65280&e.height)>>8,255&e.height,0,0]);return t(k.tkhd,i)},b=function(e){var i,n,r,s,a,o;return i=t(k.tfhd,new Uint8Array([0,0,0,58,(4278190080&e.id)>>24,(16711680&e.id)>>16,(65280&e.id)>>8,255&e.id,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0])),a=Math.floor(e.baseMediaDecodeTime/(q+1)),o=Math.floor(e.baseMediaDecodeTime%(q+1)),n=t(k.tfdt,new Uint8Array([1,0,0,0,a>>>24&255,a>>>16&255,a>>>8&255,255&a,o>>>24&255,o>>>16&255,o>>>8&255,255&o])),92,"audio"===e.type?(r=S(e,92),t(k.traf,i,n,r)):(s=v(e),r=S(e,s.length+92),t(k.traf,i,n,r,s))},d=function(e){return e.duration=e.duration||4294967295,t(k.trak,p(e),f(e))},T=function(e){var i=new Uint8Array([0,0,0,0,(4278190080&e.id)>>24,(16711680&e.id)>>16,(65280&e.id)>>8,255&e.id,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,1]);return"video"!==e.type&&(i[i.length-1]=0),t(k.trex,i)},H=function(e,t){var i=0,n=0,r=0,s=0;return e.length&&(void 0!==e[0].duration&&(i=1),void 0!==e[0].size&&(n=2),void 0!==e[0].flags&&(r=4),void 0!==e[0].compositionTimeOffset&&(s=8)),[0,0,i|n|r|s,1,(4278190080&e.length)>>>24,(16711680&e.length)>>>16,(65280&e.length)>>>8,255&e.length,(4278190080&t)>>>24,(16711680&t)>>>16,(65280&t)>>>8,255&t]},F=function(e,i){var n,r,s,a;for(i+=20+16*(r=e.samples||[]).length,n=H(r,i),a=0;a>>24,(16711680&s.duration)>>>16,(65280&s.duration)>>>8,255&s.duration,(4278190080&s.size)>>>24,(16711680&s.size)>>>16,(65280&s.size)>>>8,255&s.size,s.flags.isLeading<<2|s.flags.dependsOn,s.flags.isDependedOn<<6|s.flags.hasRedundancy<<4|s.flags.paddingValue<<1|s.flags.isNonSyncSample,61440&s.flags.degradationPriority,15&s.flags.degradationPriority,(4278190080&s.compositionTimeOffset)>>>24,(16711680&s.compositionTimeOffset)>>>16,(65280&s.compositionTimeOffset)>>>8,255&s.compositionTimeOffset]);return t(k.trun,new Uint8Array(n))},j=function(e,i){var n,r,s,a;for(i+=20+8*(r=e.samples||[]).length,n=H(r,i),a=0;a>>24,(16711680&s.duration)>>>16,(65280&s.duration)>>>8,255&s.duration,(4278190080&s.size)>>>24,(16711680&s.size)>>>16,(65280&s.size)>>>8,255&s.size]);return t(k.trun,new Uint8Array(n))},S=function(e,t){return"audio"===e.type?j(e,t):F(e,t)};s=function(){return t(k.ftyp,C,w,C,E)};var W,z,G,$,X,K,Y,Q,J=function(e){return t(k.mdat,e)},Z=u,ee=function(e){var t,i=s(),n=l(e);return(t=new Uint8Array(i.byteLength+n.byteLength)).set(i),t.set(n,i.byteLength),t},te=function(e,t){var i={size:0,flags:{isLeading:0,dependsOn:1,isDependedOn:0,hasRedundancy:0,degradationPriority:0,isNonSyncSample:1}};return i.dataOffset=t,i.compositionTimeOffset=e.pts-e.dts,i.duration=e.duration,i.size=4*e.length,i.size+=e.byteLength,e.keyFrame&&(i.flags.dependsOn=2,i.flags.isNonSyncSample=0),i},ie=function(e){var t,i,n=[],r=[];for(r.byteLength=0,r.nalCount=0,r.duration=0,n.byteLength=0,t=0;t1&&(t=e.shift(),e.byteLength-=t.byteLength,e.nalCount-=t.nalCount,e[0][0].dts=t.dts,e[0][0].pts=t.pts,e[0][0].duration+=t.duration),e},se=function(e,t){var i,n,r,s,a,o=t||0,u=[];for(i=0;ide/2))){for((a=he[e.samplerate])||(a=t[0].data),o=0;o=i?e:(t.minSegmentDts=1/0,e.filter((function(e){return e.dts>=i&&(t.minSegmentDts=Math.min(t.minSegmentDts,e.dts),t.minSegmentPts=t.minSegmentDts,!0)})))},ye=function(e){var t,i,n=[];for(t=0;t>>8,r=255&t,t!==this.PADDING_)if(t===this.RESUME_CAPTION_LOADING_)this.mode_="popOn";else if(t===this.END_OF_CAPTION_)this.mode_="popOn",this.clearFormatting(e.pts),this.flushDisplayed(e.pts),i=this.displayed_,this.displayed_=this.nonDisplayed_,this.nonDisplayed_=i,this.startPts_=e.pts;else if(t===this.ROLL_UP_2_ROWS_)this.rollUpRows_=2,this.setRollUp(e.pts);else if(t===this.ROLL_UP_3_ROWS_)this.rollUpRows_=3,this.setRollUp(e.pts);else if(t===this.ROLL_UP_4_ROWS_)this.rollUpRows_=4,this.setRollUp(e.pts);else if(t===this.CARRIAGE_RETURN_)this.clearFormatting(e.pts),this.flushDisplayed(e.pts),this.shiftRowsUp_(),this.startPts_=e.pts;else if(t===this.BACKSPACE_)"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1);else if(t===this.ERASE_DISPLAYED_MEMORY_)this.flushDisplayed(e.pts),this.displayed_=Oe();else if(t===this.ERASE_NON_DISPLAYED_MEMORY_)this.nonDisplayed_=Oe();else if(t===this.RESUME_DIRECT_CAPTIONING_)"paintOn"!==this.mode_&&(this.flushDisplayed(e.pts),this.displayed_=Oe()),this.mode_="paintOn",this.startPts_=e.pts;else if(this.isSpecialCharacter(n,r))s=Pe((n=(3&n)<<8)|r),this[this.mode_](e.pts,s),this.column_++;else if(this.isExtCharacter(n,r))"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1),s=Pe((n=(3&n)<<8)|r),this[this.mode_](e.pts,s),this.column_++;else if(this.isMidRowCode(n,r))this.clearFormatting(e.pts),this[this.mode_](e.pts," "),this.column_++,14==(14&r)&&this.addFormatting(e.pts,["i"]),1==(1&r)&&this.addFormatting(e.pts,["u"]);else if(this.isOffsetControlCode(n,r))this.column_+=3&r;else if(this.isPAC(n,r)){var a=Le.indexOf(7968&t);"rollUp"===this.mode_&&(a-this.rollUpRows_+1<0&&(a=this.rollUpRows_-1),this.setRollUp(e.pts,a)),a!==this.row_&&(this.clearFormatting(e.pts),this.row_=a),1&r&&-1===this.formatting_.indexOf("u")&&this.addFormatting(e.pts,["u"]),16==(16&t)&&(this.column_=4*((14&t)>>1)),this.isColorPAC(r)&&14==(14&r)&&this.addFormatting(e.pts,["i"])}else this.isNormalChar(n)&&(0===r&&(r=null),s=Pe(n),s+=Pe(r),this[this.mode_](e.pts,s),this.column_+=s.length)}else this.lastControlCode_=null}};De.prototype=new V,De.prototype.flushDisplayed=function(e){var t=this.displayed_.map((function(e){try{return e.trim()}catch(e){return console.error("Skipping malformed 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e===this.EXT_&&t>=48&&t<=63},De.prototype.isExtCharacter=function(e,t){return(e===this.EXT_+1||e===this.EXT_+2)&&t>=32&&t<=63},De.prototype.isMidRowCode=function(e,t){return e===this.EXT_&&t>=32&&t<=47},De.prototype.isOffsetControlCode=function(e,t){return e===this.OFFSET_&&t>=33&&t<=35},De.prototype.isPAC=function(e,t){return e>=this.BASE_&&e=64&&t<=127},De.prototype.isColorPAC=function(e){return e>=64&&e<=79||e>=96&&e<=127},De.prototype.isNormalChar=function(e){return e>=32&&e<=127},De.prototype.setRollUp=function(e,t){if("rollUp"!==this.mode_&&(this.row_=14,this.mode_="rollUp",this.flushDisplayed(e),this.nonDisplayed_=Oe(),this.displayed_=Oe()),void 0!==t&&t!==this.row_)for(var i=0;i"}),"");this[this.mode_](e,i)},De.prototype.clearFormatting=function(e){if(this.formatting_.length){var t=this.formatting_.reverse().reduce((function(e,t){return e+""}),"");this.formatting_=[],this[this.mode_](e,t)}},De.prototype.popOn=function(e,t){var i=this.nonDisplayed_[this.row_];i+=t,this.nonDisplayed_[this.row_]=i},De.prototype.rollUp=function(e,t){var i=this.displayed_[this.row_];i+=t,this.displayed_[this.row_]=i},De.prototype.shiftRowsUp_=function(){var e;for(e=0;et&&(i=-1);Math.abs(t-e)>4294967296;)e+=8589934592*i;return e},Me=function e(t){var i,n;e.prototype.init.call(this),this.type_=t||"shared",this.push=function(e){"shared"!==this.type_&&e.type!==this.type_||(void 0===n&&(n=e.dts),e.dts=Ue(e.dts,n),e.pts=Ue(e.pts,n),i=e.dts,this.trigger("data",e))},this.flush=function(){n=i,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.discontinuity=function(){n=void 0,i=void 0},this.reset=function(){this.discontinuity(),this.trigger("reset")}};Me.prototype=new V;var Be,je=Me,Fe=function(e,t,i){var n,r="";for(n=t;n>>2;h*=4,h+=3&c[7],u.timeStamp=h,void 0===t.pts&&void 0===t.dts&&(t.pts=u.timeStamp,t.dts=u.timeStamp),this.trigger("timestamp",u)}t.frames.push(u),a+=10,a+=o}while(a>>4>1&&(n+=t[n]+1),0===i.pid)i.type="pat",e(t.subarray(n),i),this.trigger("data",i);else if(i.pid===this.pmtPid)for(i.type="pmt",e(t.subarray(n),i),this.trigger("data",i);this.packetsWaitingForPmt.length;)this.processPes_.apply(this,this.packetsWaitingForPmt.shift());else void 0===this.programMapTable?this.packetsWaitingForPmt.push([t,n,i]):this.processPes_(t,n,i)},this.processPes_=function(e,t,i){i.pid===this.programMapTable.video?i.streamType=Re.H264_STREAM_TYPE:i.pid===this.programMapTable.audio?i.streamType=Re.ADTS_STREAM_TYPE:i.streamType=this.programMapTable["timed-metadata"][i.pid],i.type="pes",i.data=e.subarray(t),this.trigger("data",i)}}).prototype=new V,ze.STREAM_TYPES={h264:27,adts:15},(Ge=function(){var e,t=this,i={data:[],size:0},n={data:[],size:0},r={data:[],size:0},s=function(e,i,n){var r,s,a=new Uint8Array(e.size),o={type:i},u=0,l=0;if(e.data.length&&!(e.size<9)){for(o.trackId=e.data[0].pid,u=0;u>>3,h.pts*=4,h.pts+=(6&c[13])>>>1,h.dts=h.pts,64&d&&(h.dts=(14&c[14])<<27|(255&c[15])<<20|(254&c[16])<<12|(255&c[17])<<5|(254&c[18])>>>3,h.dts*=4,h.dts+=(6&c[18])>>>1)),h.data=c.subarray(9+c[8]),r="video"===i||o.packetLength<=e.size,(n||r)&&(e.size=0,e.data.length=0),r&&t.trigger("data",o)}};Ge.prototype.init.call(this),this.push=function(a){({pat:function(){},pes:function(){var e,t;switch(a.streamType){case Re.H264_STREAM_TYPE:case Re.H264_STREAM_TYPE:e=i,t="video";break;case Re.ADTS_STREAM_TYPE:e=n,t="audio";break;case Re.METADATA_STREAM_TYPE:e=r,t="timed-metadata";break;default:return}a.payloadUnitStartIndicator&&s(e,t,!0),e.data.push(a),e.size+=a.data.byteLength},pmt:function(){var i={type:"metadata",tracks:[]};null!==(e=a.programMapTable).video&&i.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+e.video,codec:"avc",type:"video"}),null!==e.audio&&i.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+e.audio,codec:"adts",type:"audio"}),t.trigger("data",i)}})[a.type]()},this.reset=function(){i.size=0,i.data.length=0,n.size=0,n.data.length=0,this.trigger("reset")},this.flushStreams_=function(){s(i,"video"),s(n,"audio"),s(r,"timed-metadata")},this.flush=function(){this.flushStreams_(),this.trigger("done")}}).prototype=new V;var Ke={PAT_PID:0,MP2T_PACKET_LENGTH:188,TransportPacketStream:We,TransportParseStream:ze,ElementaryStream:Ge,TimestampRolloverStream:Xe,CaptionStream:Ne.CaptionStream,Cea608Stream:Ne.Cea608Stream,MetadataStream:$e};for(var Ye in Re)Re.hasOwnProperty(Ye)&&(Ke[Ye]=Re[Ye]);var Qe,Je=Ke,Ze=de,et=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350];(Qe=function(e){var t,i=0;Qe.prototype.init.call(this),this.push=function(n){var r,s,a,o,u,l,c=0;if(e||(i=0),"audio"===n.type)for(t?(o=t,(t=new Uint8Array(o.byteLength+n.data.byteLength)).set(o),t.set(n.data,o.byteLength)):t=n.data;c+5>5,l=(u=1024*(1+(3&t[c+6])))*Ze/et[(60&t[c+2])>>>2],a=c+r,t.byteLength>>6&3),channelcount:(1&t[c+2])<<2|(192&t[c+3])>>>6,samplerate:et[(60&t[c+2])>>>2],samplingfrequencyindex:(60&t[c+2])>>>2,samplesize:16,data:t.subarray(c+7+s,a)}),i++,t.byteLength===a)return void(t=void 0);t=t.subarray(a)}else c++},this.flush=function(){i=0,this.trigger("done")},this.reset=function(){t=void 0,this.trigger("reset")},this.endTimeline=function(){t=void 0,this.trigger("endedtimeline")}}).prototype=new V;var tt,it,nt,rt=Qe,st=function(e){var t=e.byteLength,i=0,n=0;this.length=function(){return 8*t},this.bitsAvailable=function(){return 8*t+n},this.loadWord=function(){var r=e.byteLength-t,s=new Uint8Array(4),a=Math.min(4,t);if(0===a)throw new Error("no bytes available");s.set(e.subarray(r,r+a)),i=new DataView(s.buffer).getUint32(0),n=8*a,t-=a},this.skipBits=function(e){var r;n>e?(i<<=e,n-=e):(e-=n,e-=8*(r=Math.floor(e/8)),t-=r,this.loadWord(),i<<=e,n-=e)},this.readBits=function(e){var r=Math.min(n,e),s=i>>>32-r;return(n-=r)>0?i<<=r:t>0&&this.loadWord(),(r=e-r)>0?s<>>e))return i<<=e,n-=e,e;return this.loadWord(),e+this.skipLeadingZeros()},this.skipUnsignedExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.skipExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.readUnsignedExpGolomb=function(){var e=this.skipLeadingZeros();return this.readBits(e+1)-1},this.readExpGolomb=function(){var e=this.readUnsignedExpGolomb();return 1&e?1+e>>>1:-1*(e>>>1)},this.readBoolean=function(){return 1===this.readBits(1)},this.readUnsignedByte=function(){return this.readBits(8)},this.loadWord()};(it=function(){var e,t,i=0;it.prototype.init.call(this),this.push=function(n){var r;t?((r=new Uint8Array(t.byteLength+n.data.byteLength)).set(t),r.set(n.data,t.byteLength),t=r):t=n.data;for(var s=t.byteLength;i3&&this.trigger("data",t.subarray(i+3)),t=null,i=0,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")}}).prototype=new V,nt={100:!0,110:!0,122:!0,244:!0,44:!0,83:!0,86:!0,118:!0,128:!0,138:!0,139:!0,134:!0},(tt=function(){var e,t,i,n,r,s,a,o=new it;tt.prototype.init.call(this),e=this,this.push=function(e){"video"===e.type&&(t=e.trackId,i=e.pts,n=e.dts,o.push(e))},o.on("data",(function(a){var o={trackId:t,pts:i,dts:n,data:a};switch(31&a[0]){case 5:o.nalUnitType="slice_layer_without_partitioning_rbsp_idr";break;case 6:o.nalUnitType="sei_rbsp",o.escapedRBSP=r(a.subarray(1));break;case 7:o.nalUnitType="seq_parameter_set_rbsp",o.escapedRBSP=r(a.subarray(1)),o.config=s(o.escapedRBSP);break;case 8:o.nalUnitType="pic_parameter_set_rbsp";break;case 9:o.nalUnitType="access_unit_delimiter_rbsp"}e.trigger("data",o)})),o.on("done",(function(){e.trigger("done")})),o.on("partialdone",(function(){e.trigger("partialdone")})),o.on("reset",(function(){e.trigger("reset")})),o.on("endedtimeline",(function(){e.trigger("endedtimeline")})),this.flush=function(){o.flush()},this.partialFlush=function(){o.partialFlush()},this.reset=function(){o.reset()},this.endTimeline=function(){o.endTimeline()},a=function(e,t){var i,n=8,r=8;for(i=0;i>4?i+20:i+10},ct=function(e,t){var i=(224&e[t+5])>>5,n=e[t+4]<<3;return 6144&e[t+3]|n|i};(at=function(){var e=new Uint8Array,t=0;at.prototype.init.call(this),this.setTimestamp=function(e){t=e},this.push=function(i){var n,r,s,a,o=0,u=0;for(e.length?(a=e.length,(e=new Uint8Array(i.byteLength+a)).set(e.subarray(0,a)),e.set(i,a)):e=i;e.length-u>=3;)if(e[u]!=="I".charCodeAt(0)||e[u+1]!=="D".charCodeAt(0)||e[u+2]!=="3".charCodeAt(0))if(255!=(255&e[u])||240!=(240&e[u+1]))u++;else{if(e.length-u<7)break;if(u+(o=ct(e,u))>e.length)break;s={type:"audio",data:e.subarray(u,u+o),pts:t,dts:t},this.trigger("data",s),u+=o}else{if(e.length-u<10)break;if(u+(o=lt(e,u))>e.length)break;r={type:"timed-metadata",data:e.subarray(u,u+o)},this.trigger("data",r),u+=o}n=e.length-u,e=n>0?e.subarray(u):new Uint8Array},this.reset=function(){e=new Uint8Array,this.trigger("reset")},this.endTimeline=function(){e=new Uint8Array,this.trigger("endedtimeline")}}).prototype=new V;var ht,dt,pt,ft,mt=at,gt=ot.H264Stream,vt=ut,yt=de,_t=["audioobjecttype","channelcount","samplerate","samplingfrequencyindex","samplesize"],bt=["width","height","profileIdc","levelIdc","profileCompatibility","sarRatio"],Tt=function(e,t){var i;if(e.length!==t.length)return!1;for(i=0;i=-1e4&&i<=45e3&&(!n||o>i)&&(n=s,o=i));return n?n.gop:null},this.alignGopsAtStart_=function(e){var t,i,n,r,s,o,u,l;for(s=e.byteLength,o=e.nalCount,u=e.duration,t=i=0;tn.pts?t++:(i++,s-=r.byteLength,o-=r.nalCount,u-=r.duration);return 0===i?e:i===e.length?null:((l=e.slice(i)).byteLength=s,l.duration=u,l.nalCount=o,l.pts=l[0].pts,l.dts=l[0].dts,l)},this.alignGopsAtEnd_=function(e){var t,i,n,r,s,o,u;for(t=a.length-1,i=e.length-1,s=null,o=!1;t>=0&&i>=0;){if(n=a[t],r=e[i],n.pts===r.pts){o=!0;break}n.pts>r.pts?t--:(t===a.length-1&&(s=i),i--)}if(!o&&null===s)return null;if(0===(u=o?i:s))return e;var l=e.slice(u),c=l.reduce((function(e,t){return e.byteLength+=t.byteLength,e.duration+=t.duration,e.nalCount+=t.nalCount,e}),{byteLength:0,duration:0,nalCount:0});return l.byteLength=c.byteLength,l.duration=c.duration,l.nalCount=c.nalCount,l.pts=l[0].pts,l.dts=l[0].dts,l},this.alignGopsWith=function(e){a=e}}).prototype=new V,(ft=function(e,t){this.numberOfTracks=0,this.metadataStream=t,void 0!==(e=e||{}).remux?this.remuxTracks=!!e.remux:this.remuxTracks=!0,"boolean"==typeof e.keepOriginalTimestamps?this.keepOriginalTimestamps=e.keepOriginalTimestamps:this.keepOriginalTimestamps=!1,this.pendingTracks=[],this.videoTrack=null,this.pendingBoxes=[],this.pendingCaptions=[],this.pendingMetadata=[],this.pendingBytes=0,this.emittedTracks=0,ft.prototype.init.call(this),this.push=function(e){return e.text?this.pendingCaptions.push(e):e.frames?this.pendingMetadata.push(e):(this.pendingTracks.push(e.track),this.pendingBytes+=e.boxes.byteLength,"video"===e.track.type&&(this.videoTrack=e.track,this.pendingBoxes.push(e.boxes)),void("audio"===e.track.type&&(this.audioTrack=e.track,this.pendingBoxes.unshift(e.boxes))))}}).prototype=new V,ft.prototype.flush=function(e){var t,i,n,r,s=0,a={captions:[],captionStreams:{},metadata:[],info:{}},o=0;if(this.pendingTracks.length=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0))}if(this.videoTrack?(o=this.videoTrack.timelineStartInfo.pts,bt.forEach((function(e){a.info[e]=this.videoTrack[e]}),this)):this.audioTrack&&(o=this.audioTrack.timelineStartInfo.pts,_t.forEach((function(e){a.info[e]=this.audioTrack[e]}),this)),this.videoTrack||this.audioTrack){for(1===this.pendingTracks.length?a.type=this.pendingTracks[0].type:a.type="combined",this.emittedTracks+=this.pendingTracks.length,n=ee(this.pendingTracks),a.initSegment=new Uint8Array(n.byteLength),a.initSegment.set(n),a.data=new Uint8Array(this.pendingBytes),r=0;r=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0)},ft.prototype.setRemux=function(e){this.remuxTracks=e},(pt=function(e){var t,i,n=this,r=!0;pt.prototype.init.call(this),e=e||{},this.baseMediaDecodeTime=e.baseMediaDecodeTime||0,this.transmuxPipeline_={},this.setupAacPipeline=function(){var r={};this.transmuxPipeline_=r,r.type="aac",r.metadataStream=new Je.MetadataStream,r.aacStream=new mt,r.audioTimestampRolloverStream=new Je.TimestampRolloverStream("audio"),r.timedMetadataTimestampRolloverStream=new Je.TimestampRolloverStream("timed-metadata"),r.adtsStream=new rt,r.coalesceStream=new ft(e,r.metadataStream),r.headOfPipeline=r.aacStream,r.aacStream.pipe(r.audioTimestampRolloverStream).pipe(r.adtsStream),r.aacStream.pipe(r.timedMetadataTimestampRolloverStream).pipe(r.metadataStream).pipe(r.coalesceStream),r.metadataStream.on("timestamp",(function(e){r.aacStream.setTimestamp(e.timeStamp)})),r.aacStream.on("data",(function(s){"timed-metadata"!==s.type||r.audioSegmentStream||(i=i||{timelineStartInfo:{baseMediaDecodeTime:n.baseMediaDecodeTime},codec:"adts",type:"audio"},r.coalesceStream.numberOfTracks++,r.audioSegmentStream=new dt(i,e),r.audioSegmentStream.on("timingInfo",n.trigger.bind(n,"audioTimingInfo")),r.adtsStream.pipe(r.audioSegmentStream).pipe(r.coalesceStream)),n.trigger("trackinfo",{hasAudio:!!i,hasVideo:!!t})})),r.coalesceStream.on("data",this.trigger.bind(this,"data")),r.coalesceStream.on("done",this.trigger.bind(this,"done"))},this.setupTsPipeline=function(){var r={};this.transmuxPipeline_=r,r.type="ts",r.metadataStream=new Je.MetadataStream,r.packetStream=new Je.TransportPacketStream,r.parseStream=new Je.TransportParseStream,r.elementaryStream=new Je.ElementaryStream,r.timestampRolloverStream=new Je.TimestampRolloverStream,r.adtsStream=new rt,r.h264Stream=new gt,r.captionStream=new Je.CaptionStream,r.coalesceStream=new ft(e,r.metadataStream),r.headOfPipeline=r.packetStream,r.packetStream.pipe(r.parseStream).pipe(r.elementaryStream).pipe(r.timestampRolloverStream),r.timestampRolloverStream.pipe(r.h264Stream),r.timestampRolloverStream.pipe(r.adtsStream),r.timestampRolloverStream.pipe(r.metadataStream).pipe(r.coalesceStream),r.h264Stream.pipe(r.captionStream).pipe(r.coalesceStream),r.elementaryStream.on("data",(function(s){var a;if("metadata"===s.type){for(a=s.tracks.length;a--;)t||"video"!==s.tracks[a].type?i||"audio"!==s.tracks[a].type||((i=s.tracks[a]).timelineStartInfo.baseMediaDecodeTime=n.baseMediaDecodeTime):(t=s.tracks[a]).timelineStartInfo.baseMediaDecodeTime=n.baseMediaDecodeTime;t&&!r.videoSegmentStream&&(r.coalesceStream.numberOfTracks++,r.videoSegmentStream=new ht(t,e),r.videoSegmentStream.on("timelineStartInfo",(function(e){i&&(i.timelineStartInfo=e,r.audioSegmentStream.setEarliestDts(e.dts))})),r.videoSegmentStream.on("processedGopsInfo",n.trigger.bind(n,"gopInfo")),r.videoSegmentStream.on("segmentTimingInfo",n.trigger.bind(n,"videoSegmentTimingInfo")),r.videoSegmentStream.on("baseMediaDecodeTime",(function(e){i&&r.audioSegmentStream.setVideoBaseMediaDecodeTime(e)})),r.videoSegmentStream.on("timingInfo",n.trigger.bind(n,"videoTimingInfo")),r.h264Stream.pipe(r.videoSegmentStream).pipe(r.coalesceStream)),i&&!r.audioSegmentStream&&(r.coalesceStream.numberOfTracks++,r.audioSegmentStream=new dt(i,e),r.audioSegmentStream.on("timingInfo",n.trigger.bind(n,"audioTimingInfo")),r.adtsStream.pipe(r.audioSegmentStream).pipe(r.coalesceStream)),n.trigger("trackinfo",{hasAudio:!!i,hasVideo:!!t})}})),r.coalesceStream.on("data",this.trigger.bind(this,"data")),r.coalesceStream.on("id3Frame",(function(e){e.dispatchType=r.metadataStream.dispatchType,n.trigger("id3Frame",e)})),r.coalesceStream.on("caption",this.trigger.bind(this,"caption")),r.coalesceStream.on("done",this.trigger.bind(this,"done"))},this.setBaseMediaDecodeTime=function(n){var r=this.transmuxPipeline_;e.keepOriginalTimestamps||(this.baseMediaDecodeTime=n),i&&(i.timelineStartInfo.dts=void 0,i.timelineStartInfo.pts=void 0,Te(i),e.keepOriginalTimestamps||(i.timelineStartInfo.baseMediaDecodeTime=n),r.audioTimestampRolloverStream&&r.audioTimestampRolloverStream.discontinuity()),t&&(r.videoSegmentStream&&(r.videoSegmentStream.gopCache_=[]),t.timelineStartInfo.dts=void 0,t.timelineStartInfo.pts=void 0,Te(t),r.captionStream.reset(),e.keepOriginalTimestamps||(t.timelineStartInfo.baseMediaDecodeTime=n)),r.timestampRolloverStream&&r.timestampRolloverStream.discontinuity()},this.setAudioAppendStart=function(e){i&&this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(e)},this.setRemux=function(t){var i=this.transmuxPipeline_;e.remux=t,i&&i.coalesceStream&&i.coalesceStream.setRemux(t)},this.alignGopsWith=function(e){t&&this.transmuxPipeline_.videoSegmentStream&&this.transmuxPipeline_.videoSegmentStream.alignGopsWith(e)},this.push=function(e){if(r){var t=vt(e);t&&"aac"!==this.transmuxPipeline_.type?this.setupAacPipeline():t||"ts"===this.transmuxPipeline_.type||this.setupTsPipeline(),r=!1}this.transmuxPipeline_.headOfPipeline.push(e)},this.flush=function(){r=!0,this.transmuxPipeline_.headOfPipeline.flush()},this.endTimeline=function(){this.transmuxPipeline_.headOfPipeline.endTimeline()},this.reset=function(){this.transmuxPipeline_.headOfPipeline&&this.transmuxPipeline_.headOfPipeline.reset()},this.resetCaptions=function(){this.transmuxPipeline_.captionStream&&this.transmuxPipeline_.captionStream.reset()}}).prototype=new V;var kt={Transmuxer:pt,VideoSegmentStream:ht,AudioSegmentStream:dt,AUDIO_PROPERTIES:_t,VIDEO_PROPERTIES:bt,generateVideoSegmentTimingInfo:St},Ct=function(){function e(e,t){for(var i=0;i0&&void 0!==arguments[0]?arguments[0]:"",t={codecCount:0},i=void 0;return t.codecCount=e.split(",").length,t.codecCount=t.codecCount||2,(i=/(^|\s|,)+(avc[13])([^ ,]*)/i.exec(e))&&(t.videoCodec=i[2],t.videoObjectTypeIndicator=i[3]),t.audioProfile=/(^|\s|,)+mp4a.[0-9A-Fa-f]+\.([0-9A-Fa-f]+)/i.exec(e),t.audioProfile=t.audioProfile&&t.audioProfile[2],t},$c=function(e,t,i){return e+"/"+t+'; codecs="'+i.filter((function(e){return!!e})).join(", ")+'"'},Xc=function(e,t){var i=function(e){return e.segments&&e.segments.length&&e.segments[0].map?"mp4":"mp2t"}(t),n=function(e){var t=e.attributes||{};return t.CODECS?Gc(t.CODECS):Wc}(t),r=t.attributes||{},s=!0,a=!1;if(!t)return[];if(e.mediaGroups.AUDIO&&r.AUDIO){var o=e.mediaGroups.AUDIO[r.AUDIO];if(o)for(var u in a=!0,s=!1,o)if(!o[u].uri&&!o[u].playlists){s=!0;break}}a&&!n.audioProfile&&(s||(n.audioProfile=function(e,t){if(!e.mediaGroups.AUDIO||!t)return null;var i=e.mediaGroups.AUDIO[t];if(!i)return null;for(var n in i){var r=i[n];if(r.default&&r.playlists)return Gc(r.playlists[0].attributes.CODECS).audioProfile}return null}(e,r.AUDIO)),n.audioProfile||(Il.log.warn("Multiple audio tracks present but no audio codec string is specified. Attempting to use the default audio codec (mp4a.40.2)"),n.audioProfile=Wc.audioProfile));var l={};n.videoCodec&&(l.video=""+n.videoCodec+n.videoObjectTypeIndicator),n.audioProfile&&(l.audio="mp4a.40."+n.audioProfile);var c=$c("audio",i,[l.audio]),h=$c("video",i,[l.video]),d=$c("video",i,[l.video,l.audio]);return a?!s&&l.video?[h,c]:s||l.video?[d,c]:[c,c]:l.video?[d]:[c]},Kc=function(e){var t={type:"",parameters:{}},i=e.trim().split(";");return t.type=i.shift().trim(),i.forEach((function(e){var i=e.trim().split("=");if(i.length>1){var n=i[0].replace(/"/g,"").trim(),r=i[1].replace(/"/g,"").trim();t.parameters[n]=r}})),t},Yc=function(e){return/mp4a\.\d+.\d+/i.test(e)},Qc=function(e){return/avc1\.[\da-f]+/i.test(e)},Jc=function(e,t,i){if(null==t||!e.length)return[];var n=Math.ceil(9e4*(t-i+3)),r=void 0;for(r=0;rn);r++);return e.slice(r)},Zc=function(e){function t(e,i){Nl(this,t);var n=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this,Il.EventTarget));n.timestampOffset_=0,n.pendingBuffers_=[],n.bufferUpdating_=!1,n.mediaSource_=e,n.codecs_=i,n.audioCodec_=null,n.videoCodec_=null,n.audioDisabled_=!1,n.appendAudioInitSegment_=!0,n.gopBuffer_=[],n.timeMapping_=0,n.safeAppend_=Il.browser.IE_VERSION>=11;var r={remux:!1,alignGopsAtEnd:n.safeAppend_};return n.codecs_.forEach((function(e){Yc(e)?n.audioCodec_=e:Qc(e)&&(n.videoCodec_=e)})),n.transmuxer_=new qc,n.transmuxer_.postMessage({action:"init",options:r}),n.transmuxer_.onmessage=function(e){return"data"===e.data.action?n.data_(e):"done"===e.data.action?n.done_(e):"gopInfo"===e.data.action?n.appendGopInfo_(e):"videoSegmentTimingInfo"===e.data.action?n.videoSegmentTimingInfo_(e.data.videoSegmentTimingInfo):void 0},Object.defineProperty(n,"timestampOffset",{get:function(){return this.timestampOffset_},set:function(e){"number"==typeof e&&e>=0&&(this.timestampOffset_=e,this.appendAudioInitSegment_=!0,this.gopBuffer_.length=0,this.timeMapping_=0,this.transmuxer_.postMessage({action:"setTimestampOffset",timestampOffset:e}))}}),Object.defineProperty(n,"appendWindowStart",{get:function(){return(this.videoBuffer_||this.audioBuffer_).appendWindowStart},set:function(e){this.videoBuffer_&&(this.videoBuffer_.appendWindowStart=e),this.audioBuffer_&&(this.audioBuffer_.appendWindowStart=e)}}),Object.defineProperty(n,"updating",{get:function(){return!!(this.bufferUpdating_||!this.audioDisabled_&&this.audioBuffer_&&this.audioBuffer_.updating||this.videoBuffer_&&this.videoBuffer_.updating)}}),Object.defineProperty(n,"buffered",{get:function(){return function(e,t,i){var n=null,r=null,s=0,a=[],o=[];if(!e&&!t)return Il.createTimeRange();if(!e)return t.buffered;if(!t)return e.buffered;if(i)return e.buffered;if(0===e.buffered.length&&0===t.buffered.length)return Il.createTimeRange();for(var u=e.buffered,l=t.buffered,c=u.length;c--;)a.push({time:u.start(c),type:"start"}),a.push({time:u.end(c),type:"end"});for(c=l.length;c--;)a.push({time:l.start(c),type:"start"}),a.push({time:l.end(c),type:"end"});for(a.sort((function(e,t){return e.time-t.time})),c=0;c=n);r++);return e.slice(0,r).concat(t)}(this.gopBuffer_,e.data.gopInfo,this.safeAppend_)}},{key:"remove",value:function(e,t){if(this.videoBuffer_&&(this.videoBuffer_.updating=!0,this.videoBuffer_.remove(e,t),this.gopBuffer_=function(e,t,i,n){for(var r=Math.ceil(9e4*(t-n)),s=Math.ceil(9e4*(i-n)),a=e.slice(),o=e.length;o--&&!(e[o].pts<=s););if(-1===o)return a;for(var u=o+1;u--&&!(e[u].pts<=r););return u=Math.max(u,0),a.splice(u,o-u+1),a}(this.gopBuffer_,e,t,this.timeMapping_)),!this.audioDisabled_&&this.audioBuffer_&&(this.audioBuffer_.updating=!0,this.audioBuffer_.remove(e,t)),Pc(e,t,this.metadataTrack_),this.inbandTextTracks_)for(var i in this.inbandTextTracks_)Pc(e,t,this.inbandTextTracks_[i])}},{key:"processPendingSegments_",value:function(){var e={video:{segments:[],bytes:0},audio:{segments:[],bytes:0},captions:[],metadata:[]};if(!this.pendingBuffers_.length)return this.trigger("updateend"),void(this.bufferUpdating_=!1);e=this.pendingBuffers_.reduce((function(e,t){var i=t.type,n=t.data,r=t.initSegment;return e[i].segments.push(n),e[i].bytes+=n.byteLength,e[i].initSegment=r,t.captions&&(e.captions=e.captions.concat(t.captions)),t.info&&(e[i].info=t.info),t.metadata&&(e.metadata=e.metadata.concat(t.metadata)),e}),e),this.videoBuffer_||this.audioBuffer_||(0===e.video.bytes&&(this.videoCodec_=null),0===e.audio.bytes&&(this.audioCodec_=null),this.createRealSourceBuffers_()),e.audio.info&&this.mediaSource_.trigger({type:"audioinfo",info:e.audio.info}),e.video.info&&this.mediaSource_.trigger({type:"videoinfo",info:e.video.info}),this.appendAudioInitSegment_&&(!this.audioDisabled_&&this.audioBuffer_&&(e.audio.segments.unshift(e.audio.initSegment),e.audio.bytes+=e.audio.initSegment.byteLength),this.appendAudioInitSegment_=!1);var t=!1;this.videoBuffer_&&e.video.bytes?(e.video.segments.unshift(e.video.initSegment),e.video.bytes+=e.video.initSegment.byteLength,this.concatAndAppendSegments_(e.video,this.videoBuffer_)):!this.videoBuffer_||!this.audioDisabled_&&this.audioBuffer_||(t=!0),Oc(this,e.captions,e.metadata),!this.audioDisabled_&&this.audioBuffer_&&this.concatAndAppendSegments_(e.audio,this.audioBuffer_),this.pendingBuffers_.length=0,t&&this.trigger("updateend"),this.bufferUpdating_=!1}},{key:"concatAndAppendSegments_",value:function(e,t){var i=0,n=void 0;if(e.bytes){n=new Uint8Array(e.bytes),e.segments.forEach((function(e){n.set(e,i),i+=e.byteLength}));try{t.updating=!0,t.appendBuffer(n)}catch(e){this.mediaSource_.player_&&this.mediaSource_.player_.error({code:-3,type:"APPEND_BUFFER_ERR",message:e.message,originalError:e})}}}},{key:"abort",value:function(){this.videoBuffer_&&this.videoBuffer_.abort(),!this.audioDisabled_&&this.audioBuffer_&&this.audioBuffer_.abort(),this.transmuxer_&&this.transmuxer_.postMessage({action:"reset"}),this.pendingBuffers_.length=0,this.bufferUpdating_=!1}},{key:"dispose",value:function(){this.transmuxer_&&this.transmuxer_.terminate(),this.trigger("dispose"),this.off()}}]),t}(Il.EventTarget),eh=function(e){function t(){Nl(this,t);var e=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this)),i=void 0;for(i in e.nativeMediaSource_=new K.MediaSource,e.nativeMediaSource_)i in t.prototype||"function"!=typeof e.nativeMediaSource_[i]||(e[i]=e.nativeMediaSource_[i].bind(e.nativeMediaSource_));return e.duration_=NaN,Object.defineProperty(e,"duration",{get:function(){return this.duration_===1/0?this.duration_:this.nativeMediaSource_.duration},set:function(e){this.duration_=e,e===1/0||(this.nativeMediaSource_.duration=e)}}),Object.defineProperty(e,"seekable",{get:function(){return this.duration_===1/0?Il.createTimeRanges([[0,this.nativeMediaSource_.duration]]):this.nativeMediaSource_.seekable}}),Object.defineProperty(e,"readyState",{get:function(){return this.nativeMediaSource_.readyState}}),Object.defineProperty(e,"activeSourceBuffers",{get:function(){return this.activeSourceBuffers_}}),e.sourceBuffers=[],e.activeSourceBuffers_=[],e.updateActiveSourceBuffers_=function(){if(e.activeSourceBuffers_.length=0,1===e.sourceBuffers.length){var t=e.sourceBuffers[0];return t.appendAudioInitSegment_=!0,t.audioDisabled_=!t.audioCodec_,void e.activeSourceBuffers_.push(t)}for(var i=!1,n=!0,r=0;rthis.nativeMediaSource_.duration||isNaN(this.nativeMediaSource_.duration))&&(this.nativeMediaSource_.duration=t)}},{key:"addSourceBuffer",value:function(e){var t=void 0,i=Kc(e);if(/^(video|audio)\/mp2t$/i.test(i.type)){var n=[];i.parameters&&i.parameters.codecs&&(n=i.parameters.codecs.split(","),n=(n=zc(n)).filter((function(e){return Yc(e)||Qc(e)}))),0===n.length&&(n=["avc1.4d400d","mp4a.40.2"]),t=new Zc(this,n),0!==this.sourceBuffers.length&&(this.sourceBuffers[0].createRealSourceBuffers_(),t.createRealSourceBuffers_(),this.sourceBuffers[0].audioDisabled_=!0)}else t=this.nativeMediaSource_.addSourceBuffer(e);return this.sourceBuffers.push(t),t}},{key:"dispose",value:function(){this.trigger("dispose"),this.off(),this.sourceBuffers.forEach((function(e){e.dispose&&e.dispose()})),this.sourceBuffers.length=0}}]),t}(Il.EventTarget),th=0;Il.mediaSources={};var ih=function(e,t){var i=Il.mediaSources[e];if(!i)throw new Error("Media Source not found (Video.js)");i.trigger({type:"sourceopen",swfId:t})},nh=function(){return!!K.MediaSource&&!!K.MediaSource.isTypeSupported&&K.MediaSource.isTypeSupported('video/mp4;codecs="avc1.4d400d,mp4a.40.2"')},rh=function(){if(this.MediaSource={open:ih,supportsNativeMediaSources:nh},nh())return new eh;throw new Error("Cannot use create a virtual MediaSource for this video")};rh.open=ih,rh.supportsNativeMediaSources=nh;var sh={createObjectURL:function(e){var t=void 0;return e instanceof eh?(t=K.URL.createObjectURL(e.nativeMediaSource_),e.url_=t,t):e instanceof eh?(t="blob:vjs-media-source/"+th,th++,Il.mediaSources[t]=e,t):(t=K.URL.createObjectURL(e),e.url_=t,t)}};Il.MediaSource=rh,Il.URL=sh;var ah=Il.EventTarget,oh=Il.mergeOptions,uh=function(e,t){for(var i=void 0,n=oh(e,{duration:t.duration,minimumUpdatePeriod:t.minimumUpdatePeriod}),r=0;r2&&void 0!==arguments[2]?arguments[2]:{},r=arguments[3];Nl(this,t);var s=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this)),a=n.withCredentials,o=void 0!==a&&a,u=n.handleManifestRedirects,l=void 0!==u&&u;if(s.hls_=i,s.withCredentials=o,s.handleManifestRedirects=l,!e)throw new Error("A non-empty playlist URL or playlist is required");return s.on("minimumUpdatePeriod",(function(){s.refreshXml_()})),s.on("mediaupdatetimeout",(function(){s.refreshMedia_(s.media().id)})),s.state="HAVE_NOTHING",s.loadedPlaylists_={},"string"==typeof e?(s.srcUrl=e,s.sidxMapping_={},Ml(s)):(s.setupChildLoader(r,e),s)}return Ul(t,e),Rl(t,[{key:"setupChildLoader",value:function(e,t){this.masterPlaylistLoader_=e,this.childPlaylist_=t}},{key:"dispose",value:function(){this.trigger("dispose"),this.stopRequest(),this.loadedPlaylists_={},K.clearTimeout(this.minimumUpdatePeriodTimeout_),K.clearTimeout(this.mediaRequest_),K.clearTimeout(this.mediaUpdateTimeout),this.off()}},{key:"hasPendingRequest",value:function(){return this.request||this.mediaRequest_}},{key:"stopRequest",value:function(){if(this.request){var e=this.request;this.request=null,e.onreadystatechange=null,e.abort()}}},{key:"sidxRequestFinished_",value:function(e,t,i,n){var r=this;return function(s,a){if(r.request){if(r.request=null,s)return r.error={status:a.status,message:"DASH playlist request error at URL: "+e.uri,response:a.response,code:2},i&&(r.state=i),r.trigger("error"),n(t,null);var o=new Uint8Array(a.response),u=In.parseSidx(o.subarray(8));return n(t,u)}}}},{key:"media",value:function(e){var t=this;if(!e)return this.media_;if("HAVE_NOTHING"===this.state)throw new Error("Cannot switch media playlist from "+this.state);var i=this.state;if("string"==typeof e){if(!this.master.playlists[e])throw new Error("Unknown playlist URI: "+e);e=this.master.playlists[e]}var n=!this.media_||e.id!==this.media_.id;if(n&&this.loadedPlaylists_[e.id]&&this.loadedPlaylists_[e.id].endList)return this.state="HAVE_METADATA",this.media_=e,void(n&&(this.trigger("mediachanging"),this.trigger("mediachange")));if(n)if(this.media_&&this.trigger("mediachanging"),e.sidx){var r=void 0,s=void 0;this.masterPlaylistLoader_?(r=this.masterPlaylistLoader_.master,s=this.masterPlaylistLoader_.sidxMapping_):(r=this.master,s=this.sidxMapping_);var a=lh(e.sidx);s[a]={sidxInfo:e.sidx},this.request=hh(e.sidx,e,this.hls_.xhr,{handleManifestRedirects:this.handleManifestRedirects},this.sidxRequestFinished_(e,r,i,(function(n,r){if(!n||!r)throw new Error("failed to request sidx");s[a].sidx=r,t.haveMetadata({startingState:i,playlist:n.playlists[e.id]})})))}else this.mediaRequest_=K.setTimeout(this.haveMetadata.bind(this,{startingState:i,playlist:e}),0)}},{key:"haveMetadata",value:function(e){var t=e.startingState,i=e.playlist;this.state="HAVE_METADATA",this.loadedPlaylists_[i.id]=i,this.mediaRequest_=null,this.refreshMedia_(i.id),"HAVE_MASTER"===t?this.trigger("loadedmetadata"):this.trigger("mediachange")}},{key:"pause",value:function(){this.stopRequest(),K.clearTimeout(this.mediaUpdateTimeout),K.clearTimeout(this.minimumUpdatePeriodTimeout_),"HAVE_NOTHING"===this.state&&(this.started=!1)}},{key:"load",value:function(e){var t=this;K.clearTimeout(this.mediaUpdateTimeout),K.clearTimeout(this.minimumUpdatePeriodTimeout_);var i=this.media();if(e){var n=i?i.targetDuration/2*1e3:5e3;this.mediaUpdateTimeout=K.setTimeout((function(){return t.load()}),n)}else this.started?i&&!i.endList?this.trigger("mediaupdatetimeout"):this.trigger("loadedplaylist"):this.start()}},{key:"parseMasterXml",value:function(){var e=yn(this.masterXml_,{manifestUri:this.srcUrl,clientOffset:this.clientOffset_,sidxMapping:this.sidxMapping_});e.uri=this.srcUrl;for(var t=0;t"):function(){}};function fh(){}var mh=function(){function e(t,i,n,r){Nl(this,e),this.callbacks_=[],this.pendingCallback_=null,this.timestampOffset_=0,this.mediaSource=t,this.processedAppend_=!1,this.type_=n,this.mimeType_=i,this.logger_=ph("SourceUpdater["+n+"]["+i+"]"),"closed"===t.readyState?t.addEventListener("sourceopen",this.createSourceBuffer_.bind(this,i,r)):this.createSourceBuffer_(i,r)}return Rl(e,[{key:"createSourceBuffer_",value:function(e,t){var i=this;this.sourceBuffer_=this.mediaSource.addSourceBuffer(e),this.logger_("created SourceBuffer"),t&&(t.trigger("sourcebufferadded"),this.mediaSource.sourceBuffers.length<2)?t.on("sourcebufferadded",(function(){i.start_()})):this.start_()}},{key:"start_",value:function(){var e=this;this.started_=!0,this.onUpdateendCallback_=function(){var t=e.pendingCallback_;e.pendingCallback_=null,e.sourceBuffer_.removing=!1,e.logger_("buffered ["+Ac(e.buffered())+"]"),t&&t(),e.runCallback_()},this.sourceBuffer_.addEventListener("updateend",this.onUpdateendCallback_),this.runCallback_()}},{key:"abort",value:function(e){var t=this;this.processedAppend_&&this.queueCallback_((function(){t.sourceBuffer_.abort()}),e)}},{key:"appendBuffer",value:function(e,t){var i=this;this.processedAppend_=!0,this.queueCallback_((function(){e.videoSegmentTimingInfoCallback&&i.sourceBuffer_.addEventListener("videoSegmentTimingInfo",e.videoSegmentTimingInfoCallback),i.sourceBuffer_.appendBuffer(e.bytes)}),(function(){e.videoSegmentTimingInfoCallback&&i.sourceBuffer_.removeEventListener("videoSegmentTimingInfo",e.videoSegmentTimingInfoCallback),t()}))}},{key:"buffered",value:function(){return this.sourceBuffer_?this.sourceBuffer_.buffered:Il.createTimeRanges()}},{key:"remove",value:function(e,t){var i=this,n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:fh;this.processedAppend_&&this.queueCallback_((function(){i.logger_("remove ["+e+" => "+t+"]"),i.sourceBuffer_.removing=!0,i.sourceBuffer_.remove(e,t)}),n)}},{key:"updating",value:function(){return!this.sourceBuffer_||this.sourceBuffer_.updating||!!this.pendingCallback_&&this.pendingCallback_!==fh}},{key:"timestampOffset",value:function(e){var t=this;return void 0!==e&&(this.queueCallback_((function(){t.sourceBuffer_.timestampOffset=e,t.runCallback_()})),this.timestampOffset_=e),this.timestampOffset_}},{key:"queueCallback_",value:function(e,t){this.callbacks_.push([e.bind(this),t]),this.runCallback_()}},{key:"runCallback_",value:function(){var e=void 0;!this.updating()&&this.callbacks_.length&&this.started_&&(e=this.callbacks_.shift(),this.pendingCallback_=e[1],e[0]())}},{key:"dispose",value:function(){var e=this,t=function t(){e.sourceBuffer_&&"open"===e.mediaSource.readyState&&e.sourceBuffer_.abort(),e.sourceBuffer_.removeEventListener("updateend",t)};this.sourceBuffer_.removeEventListener("updateend",this.onUpdateendCallback_),this.sourceBuffer_.removing?this.sourceBuffer_.addEventListener("updateend",t):t()}}]),e}(),gh={GOAL_BUFFER_LENGTH:30,MAX_GOAL_BUFFER_LENGTH:60,GOAL_BUFFER_LENGTH_RATE:1,INITIAL_BANDWIDTH:4194304,BANDWIDTH_VARIANCE:1.2,BUFFER_LOW_WATER_LINE:0,MAX_BUFFER_LOW_WATER_LINE:30,BUFFER_LOW_WATER_LINE_RATE:1},vh=2,yh=-101,_h=-102,bh=function(e){e.forEach((function(e){e.abort()}))},Th=function(e,t){return t.timedout?{status:t.status,message:"HLS request timed-out at URL: "+t.uri,code:yh,xhr:t}:t.aborted?{status:t.status,message:"HLS request aborted at URL: "+t.uri,code:_h,xhr:t}:e?{status:t.status,message:"HLS request errored at URL: "+t.uri,code:vh,xhr:t}:null},Sh=function(e,t,i){var n=0,r=!1;return function(s,a){if(!r)return s?(r=!0,bh(e),i(s,a)):(n+=1)===e.length?(a.endOfAllRequests=Date.now(),a.encryptedBytes?function(e,t,i){e.addEventListener("message",(function n(r){if(r.data.source===t.requestId){e.removeEventListener("message",n);var s=r.data.decrypted;return t.bytes=new Uint8Array(s.bytes,s.byteOffset,s.byteLength),i(null,t)}}));var n=void 0;n=t.key.bytes.slice?t.key.bytes.slice():new Uint32Array(Array.prototype.slice.call(t.key.bytes)),e.postMessage(yc({source:t.requestId,encrypted:t.encryptedBytes,key:n,iv:t.key.iv}),[t.encryptedBytes.buffer,n.buffer])}(t,a,i):i(null,a)):void 0}},kh=function(e,t){return function(i){var n,r,s;return e.stats=Il.mergeOptions(e.stats,(r=(n=i).target,(s={bandwidth:1/0,bytesReceived:0,roundTripTime:Date.now()-r.requestTime||0}).bytesReceived=n.loaded,s.bandwidth=Math.floor(s.bytesReceived/s.roundTripTime*8*1e3),s)),!e.stats.firstBytesReceivedAt&&e.stats.bytesReceived&&(e.stats.firstBytesReceivedAt=Date.now()),t(i,e)}},Ch=function(e,t,i,n,r,s,a){var o=[],u=Sh(o,i,a);if(r.key&&!r.key.bytes){var l=e(Il.mergeOptions(t,{uri:r.key.resolvedUri,responseType:"arraybuffer"}),function(e,t){return function(i,n){var r=n.response,s=Th(i,n);if(s)return t(s,e);if(16!==r.byteLength)return t({status:n.status,message:"Invalid HLS key at URL: "+n.uri,code:vh,xhr:n},e);var a=new DataView(r);return e.key.bytes=new Uint32Array([a.getUint32(0),a.getUint32(4),a.getUint32(8),a.getUint32(12)]),t(null,e)}}(r,u));o.push(l)}if(r.map&&!r.map.bytes){var c=e(Il.mergeOptions(t,{uri:r.map.resolvedUri,responseType:"arraybuffer",headers:fc(r.map)}),function(e,t,i){return function(n,r){var s=r.response,a=Th(n,r);return a?i(a,e):0===s.byteLength?i({status:r.status,message:"Empty HLS segment content at URL: "+r.uri,code:vh,xhr:r},e):(e.map.bytes=new Uint8Array(r.response),t&&!t.isInitialized()&&t.init(),e.map.timescales=On.timescale(e.map.bytes),e.map.videoTrackIds=On.videoTrackIds(e.map.bytes),i(null,e))}}(r,n,u));o.push(c)}var h=e(Il.mergeOptions(t,{uri:r.resolvedUri,responseType:"arraybuffer",headers:fc(r)}),function(e,t,i){return function(n,r){var s=r.response,a=Th(n,r),o=void 0;return a?i(a,e):0===s.byteLength?i({status:r.status,message:"Empty HLS segment content at URL: "+r.uri,code:vh,xhr:r},e):(e.stats=function(e){return{bandwidth:e.bandwidth,bytesReceived:e.bytesReceived||0,roundTripTime:e.roundTripTime||0}}(r),e.key?e.encryptedBytes=new Uint8Array(r.response):e.bytes=new Uint8Array(r.response),t&&e.map&&e.map.bytes&&(t.isInitialized()||t.init(),(o=t.parse(e.bytes,e.map.videoTrackIds,e.map.timescales))&&o.captions&&(e.captionStreams=o.captionStreams,e.fmp4Captions=o.captions)),i(null,e))}}(r,n,u));return h.addEventListener("progress",kh(r,s)),o.push(h),function(){return bh(o)}},wh=function(e,t){var i;return e&&(i=K.getComputedStyle(e))?i[t]:""},Eh=function(e,t){var i=e.slice();e.sort((function(e,n){var r=t(e,n);return 0===r?i.indexOf(e)-i.indexOf(n):r}))},xh=function(e,t){var i=void 0,n=void 0;return e.attributes.BANDWIDTH&&(i=e.attributes.BANDWIDTH),i=i||K.Number.MAX_VALUE,t.attributes.BANDWIDTH&&(n=t.attributes.BANDWIDTH),i-(n=n||K.Number.MAX_VALUE)},Ah=function(e,t,i){if(!e||!t)return!1;var n=i===e.segments.length;return e.endList&&"open"===t.readyState&&n},Ih=function(e){return"number"==typeof e&&isFinite(e)},Ph=function(e){function t(e){Nl(this,t);var i=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this));if(!e)throw new TypeError("Initialization settings are required");if("function"!=typeof e.currentTime)throw new TypeError("No currentTime getter specified");if(!e.mediaSource)throw new TypeError("No MediaSource specified");return i.bandwidth=e.bandwidth,i.throughput={rate:0,count:0},i.roundTrip=NaN,i.resetStats_(),i.mediaIndex=null,i.hasPlayed_=e.hasPlayed,i.currentTime_=e.currentTime,i.seekable_=e.seekable,i.seeking_=e.seeking,i.duration_=e.duration,i.mediaSource_=e.mediaSource,i.hls_=e.hls,i.loaderType_=e.loaderType,i.startingMedia_=void 0,i.segmentMetadataTrack_=e.segmentMetadataTrack,i.goalBufferLength_=e.goalBufferLength,i.sourceType_=e.sourceType,i.inbandTextTracks_=e.inbandTextTracks,i.state_="INIT",i.checkBufferTimeout_=null,i.error_=void 0,i.currentTimeline_=-1,i.pendingSegment_=null,i.mimeType_=null,i.sourceUpdater_=null,i.xhrOptions_=null,i.activeInitSegmentId_=null,i.initSegments_={},i.cacheEncryptionKeys_=e.cacheEncryptionKeys,i.keyCache_={},"main"===i.loaderType_?i.captionParser_=new Yn:i.captionParser_=null,i.decrypter_=e.decrypter,i.syncController_=e.syncController,i.syncPoint_={segmentIndex:0,time:0},i.triggerSyncInfoUpdate_=function(){return i.trigger("syncinfoupdate")},i.syncController_.on("syncinfoupdate",i.triggerSyncInfoUpdate_),i.mediaSource_.addEventListener("sourceopen",(function(){return i.ended_=!1})),i.fetchAtBuffer_=!1,i.logger_=ph("SegmentLoader["+i.loaderType_+"]"),Object.defineProperty(i,"state",{get:function(){return this.state_},set:function(e){e!==this.state_&&(this.logger_(this.state_+" -> "+e),this.state_=e)}}),i}return Ul(t,e),Rl(t,[{key:"resetStats_",value:function(){this.mediaBytesTransferred=0,this.mediaRequests=0,this.mediaRequestsAborted=0,this.mediaRequestsTimedout=0,this.mediaRequestsErrored=0,this.mediaTransferDuration=0,this.mediaSecondsLoaded=0}},{key:"dispose",value:function(){this.trigger("dispose"),this.state="DISPOSED",this.pause(),this.abort_(),this.sourceUpdater_&&this.sourceUpdater_.dispose(),this.resetStats_(),this.captionParser_&&this.captionParser_.reset(),this.checkBufferTimeout_&&K.clearTimeout(this.checkBufferTimeout_),this.syncController_&&this.triggerSyncInfoUpdate_&&this.syncController_.off("syncinfoupdate",this.triggerSyncInfoUpdate_),this.off()}},{key:"abort",value:function(){"WAITING"===this.state?(this.abort_(),this.state="READY",this.paused()||this.monitorBuffer_()):this.pendingSegment_&&(this.pendingSegment_=null)}},{key:"abort_",value:function(){this.pendingSegment_&&this.pendingSegment_.abortRequests(),this.pendingSegment_=null}},{key:"error",value:function(e){return void 0!==e&&(this.error_=e),this.pendingSegment_=null,this.error_}},{key:"endOfStream",value:function(){this.ended_=!0,this.pause(),this.trigger("ended")}},{key:"buffered_",value:function(){return this.sourceUpdater_?this.sourceUpdater_.buffered():Il.createTimeRanges()}},{key:"initSegment",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!e)return null;var i=_c(e),n=this.initSegments_[i];return t&&!n&&e.bytes&&(this.initSegments_[i]=n={resolvedUri:e.resolvedUri,byterange:e.byterange,bytes:e.bytes,timescales:e.timescales,videoTrackIds:e.videoTrackIds}),n||e}},{key:"segmentKey",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!e)return null;var i=bc(e),n=this.keyCache_[i];this.cacheEncryptionKeys_&&t&&!n&&e.bytes&&(this.keyCache_[i]=n={resolvedUri:e.resolvedUri,bytes:e.bytes});var r={resolvedUri:(n||e).resolvedUri};return n&&(r.bytes=n.bytes),r}},{key:"couldBeginLoading_",value:function(){return this.playlist_&&(this.sourceUpdater_||this.mimeType_&&"INIT"===this.state)&&!this.paused()}},{key:"load",value:function(){if(this.monitorBuffer_(),this.playlist_){if(this.syncController_.setDateTimeMapping(this.playlist_),"INIT"===this.state&&this.couldBeginLoading_())return this.init_();!this.couldBeginLoading_()||"READY"!==this.state&&"INIT"!==this.state||(this.state="READY")}}},{key:"init_",value:function(){return this.state="READY",this.sourceUpdater_=new mh(this.mediaSource_,this.mimeType_,this.loaderType_,this.sourceBufferEmitter_),this.resetEverything(),this.monitorBuffer_()}},{key:"playlist",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(e){var i=this.playlist_,n=this.pendingSegment_;this.playlist_=e,this.xhrOptions_=t,"INIT"===this.state&&(e.syncInfo={mediaSequence:e.mediaSequence,time:0});var r=null;if(i&&(i.id?r=i.id:i.uri&&(r=i.uri)),this.logger_("playlist update ["+r+" => "+(e.id||e.uri)+"]"),this.trigger("syncinfoupdate"),"INIT"===this.state&&this.couldBeginLoading_())return this.init_();if(i&&i.uri===e.uri){var s=e.mediaSequence-i.mediaSequence;this.logger_("live window shift ["+s+"]"),null!==this.mediaIndex&&(this.mediaIndex-=s),n&&(n.mediaIndex-=s,n.mediaIndex>=0&&(n.segment=e.segments[n.mediaIndex])),this.syncController_.saveExpiredSegmentInfo(i,e)}else null!==this.mediaIndex&&this.resyncLoader()}}},{key:"pause",value:function(){this.checkBufferTimeout_&&(K.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=null)}},{key:"paused",value:function(){return null===this.checkBufferTimeout_}},{key:"mimeType",value:function(e,t){this.mimeType_||(this.mimeType_=e,this.sourceBufferEmitter_=t,"INIT"===this.state&&this.couldBeginLoading_()&&this.init_())}},{key:"resetEverything",value:function(e){this.ended_=!1,this.resetLoader(),this.remove(0,1/0,e),this.captionParser_&&this.captionParser_.clearAllCaptions(),this.trigger("reseteverything")}},{key:"resetLoader",value:function(){this.fetchAtBuffer_=!1,this.resyncLoader()}},{key:"resyncLoader",value:function(){this.mediaIndex=null,this.syncPoint_=null,this.abort()}},{key:"remove",value:function(e,t,i){if(t===1/0&&(t=this.duration_()),this.sourceUpdater_&&this.sourceUpdater_.remove(e,t,i),Pc(e,t,this.segmentMetadataTrack_),this.inbandTextTracks_)for(var n in this.inbandTextTracks_)Pc(e,t,this.inbandTextTracks_[n])}},{key:"monitorBuffer_",value:function(){this.checkBufferTimeout_&&K.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=K.setTimeout(this.monitorBufferTick_.bind(this),1)}},{key:"monitorBufferTick_",value:function(){"READY"===this.state&&this.fillBuffer_(),this.checkBufferTimeout_&&K.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=K.setTimeout(this.monitorBufferTick_.bind(this),500)}},{key:"fillBuffer_",value:function(){if(!this.sourceUpdater_.updating()){this.syncPoint_||(this.syncPoint_=this.syncController_.getSyncPoint(this.playlist_,this.duration_(),this.currentTimeline_,this.currentTime_()));var e=this.checkBuffer_(this.buffered_(),this.playlist_,this.mediaIndex,this.hasPlayed_(),this.currentTime_(),this.syncPoint_);e&&(this.isEndOfStream_(e.mediaIndex)?this.endOfStream():(e.mediaIndex!==this.playlist_.segments.length-1||"ended"!==this.mediaSource_.readyState||this.seeking_())&&(e.timeline!==this.currentTimeline_&&(this.syncController_.reset(),e.timestampOffset=e.startOfSegment,this.captionParser_&&this.captionParser_.clearAllCaptions()),this.loadSegment_(e)))}}},{key:"isEndOfStream_",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.playlist_;return Ah(t,this.mediaSource_,e)&&!this.sourceUpdater_.updating()}},{key:"checkBuffer_",value:function(e,t,i,n,r,s){var a=0,o=void 0;e.length&&(a=e.end(e.length-1));var u=Math.max(0,a-r);if(!t.segments.length)return null;if(u>=this.goalBufferLength_())return null;if(!n&&u>=1)return null;if(null===s)return i=this.getSyncSegmentCandidate_(t),this.generateSegmentInfo_(t,i,null,!0);if(null!==i){t.segments[i];return o=a,this.generateSegmentInfo_(t,i+1,o,!1)}if(this.fetchAtBuffer_){var l=cc.getMediaInfoForTime(t,a,s.segmentIndex,s.time);i=l.mediaIndex,o=l.startTime}else{var c=cc.getMediaInfoForTime(t,r,s.segmentIndex,s.time);i=c.mediaIndex,o=c.startTime}return this.generateSegmentInfo_(t,i,o,!1)}},{key:"getSyncSegmentCandidate_",value:function(e){var t=this;if(-1===this.currentTimeline_)return 0;var i=e.segments.map((function(e,t){return{timeline:e.timeline,segmentIndex:t}})).filter((function(e){return e.timeline===t.currentTimeline_}));return i.length?i[Math.min(i.length-1,1)].segmentIndex:Math.max(e.segments.length-1,0)}},{key:"generateSegmentInfo_",value:function(e,t,i,n){if(t<0||t>=e.segments.length)return null;var r=e.segments[t];return{requestId:"segment-loader-"+Math.random(),uri:r.resolvedUri,mediaIndex:t,isSyncRequest:n,startOfSegment:i,playlist:e,bytes:null,encryptedBytes:null,timestampOffset:null,timeline:r.timeline,duration:r.duration,segment:r}}},{key:"abortRequestEarly_",value:function(e){if(this.hls_.tech_.paused()||!this.xhrOptions_.timeout||!this.playlist_.attributes.BANDWIDTH)return!1;if(Date.now()-(e.firstBytesReceivedAt||Date.now())<1e3)return!1;var t=this.currentTime_(),i=e.bandwidth,n=this.pendingSegment_.duration,r=cc.estimateSegmentRequestTime(n,i,this.playlist_,e.bytesReceived),s=function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:1,n=e.length?e.end(e.length-1):0;return(n-t)/i}(this.buffered_(),t,this.hls_.tech_.playbackRate())-1;if(r<=s)return!1;var a=function(e){var t=e.master,i=e.currentTime,n=e.bandwidth,r=e.duration,s=e.segmentDuration,a=e.timeUntilRebuffer,o=e.currentTimeline,u=e.syncController,l=t.playlists.filter((function(e){return!cc.isIncompatible(e)})),c=l.filter(cc.isEnabled);c.length||(c=l.filter((function(e){return!cc.isDisabled(e)})));var h=c.filter(cc.hasAttribute.bind(null,"BANDWIDTH")).map((function(e){var t=u.getSyncPoint(e,r,o,i)?1:2;return{playlist:e,rebufferingImpact:cc.estimateSegmentRequestTime(s,n,e)*t-a}})),d=h.filter((function(e){return e.rebufferingImpact<=0}));return Eh(d,(function(e,t){return xh(t.playlist,e.playlist)})),d.length?d[0]:(Eh(h,(function(e,t){return e.rebufferingImpact-t.rebufferingImpact})),h[0]||null)}({master:this.hls_.playlists.master,currentTime:t,bandwidth:i,duration:this.duration_(),segmentDuration:n,timeUntilRebuffer:s,currentTimeline:this.currentTimeline_,syncController:this.syncController_});if(a){var o=r-s-a.rebufferingImpact,u=.5;return s<=1/30&&(u=1),!a.playlist||a.playlist.uri===this.playlist_.uri||o0&&this.remove(0,t)}},{key:"createSimplifiedSegmentObj_",value:function(e){var t=e.segment,i={resolvedUri:t.resolvedUri,byterange:t.byterange,requestId:e.requestId};if(t.key){var n=t.key.iv||new Uint32Array([0,0,0,e.mediaIndex+e.playlist.mediaSequence]);i.key=this.segmentKey(t.key),i.key.iv=n}return t.map&&(i.map=this.initSegment(t.map)),i}},{key:"segmentRequestFinished_",value:function(e,t){if(this.mediaRequests+=1,t.stats&&(this.mediaBytesTransferred+=t.stats.bytesReceived,this.mediaTransferDuration+=t.stats.roundTripTime),this.pendingSegment_){if(t.requestId===this.pendingSegment_.requestId){if(e)return this.pendingSegment_=null,this.state="READY",e.code===_h?void(this.mediaRequestsAborted+=1):(this.pause(),e.code===yh?(this.mediaRequestsTimedout+=1,this.bandwidth=1,this.roundTrip=NaN,void this.trigger("bandwidthupdate")):(this.mediaRequestsErrored+=1,this.error(e),void this.trigger("error")));this.bandwidth=t.stats.bandwidth,this.roundTrip=t.stats.roundTripTime,t.map&&(t.map=this.initSegment(t.map,!0)),t.key&&this.segmentKey(t.key,!0),this.processSegmentResponse_(t)}}else this.mediaRequestsAborted+=1}},{key:"processSegmentResponse_",value:function(e){var t=this.pendingSegment_;t.bytes=e.bytes,e.map&&(t.segment.map.bytes=e.map.bytes),t.endOfAllRequests=e.endOfAllRequests,e.fmp4Captions&&(!function(e,t,i){for(var n in i)if(!e[n]){t.trigger({type:"usage",name:"hls-608"});var r=t.textTracks().getTrackById(n);e[n]=r||t.addRemoteTextTrack({kind:"captions",id:n,label:n},!1).track}}(this.inbandTextTracks_,this.hls_.tech_,e.captionStreams),function(e){var t=e.inbandTextTracks,i=e.captionArray,n=e.timestampOffset;if(i){var r=window.WebKitDataCue||window.VTTCue;i.forEach((function(e){var i=e.stream,s=e.startTime,a=e.endTime;t[i]&&(s+=n,a+=n,t[i].addCue(new r(s,a,e.text)))}))}}({inbandTextTracks:this.inbandTextTracks_,captionArray:e.fmp4Captions,timestampOffset:0}),this.captionParser_&&this.captionParser_.clearParsedCaptions()),this.handleSegment_()}},{key:"handleSegment_",value:function(){var e=this;if(this.pendingSegment_){var t=this.pendingSegment_,i=t.segment,n=this.syncController_.probeSegmentInfo(t);void 0===this.startingMedia_&&n&&(n.containsAudio||n.containsVideo)&&(this.startingMedia_={containsAudio:n.containsAudio,containsVideo:n.containsVideo});var r,s,a,o=(r=this.loaderType_,s=this.startingMedia_,a=n,"main"===r&&s&&a?a.containsAudio||a.containsVideo?s.containsVideo&&!a.containsVideo?"Only audio found in segment when we expected video. We can't switch to audio only from a stream that had video. To get rid of this message, please add codec information to the manifest.":!s.containsVideo&&a.containsVideo?"Video found in segment when we expected only audio. We can't switch to a stream with video from an audio only stream. To get rid of this message, please add codec information to the manifest.":null:"Neither audio nor video found in segment.":null);if(o)return this.error({message:o,blacklistDuration:1/0}),void this.trigger("error");if(t.isSyncRequest)return this.trigger("syncinfoupdate"),this.pendingSegment_=null,void(this.state="READY");if(null!==t.timestampOffset&&t.timestampOffset!==this.sourceUpdater_.timestampOffset()){if(n&&n.segmentTimestampInfo){var u=n.segmentTimestampInfo[0].ptsTime,l=n.segmentTimestampInfo[0].dtsTime;t.timestampOffset-=u-l}this.sourceUpdater_.timestampOffset(t.timestampOffset),this.trigger("timestampoffset")}var c=this.syncController_.mappingForTimeline(t.timeline);if(null!==c&&this.trigger({type:"segmenttimemapping",mapping:c}),this.state="APPENDING",i.map){var h=_c(i.map);if(!this.activeInitSegmentId_||this.activeInitSegmentId_!==h){var d=this.initSegment(i.map);this.sourceUpdater_.appendBuffer({bytes:d.bytes},(function(){e.activeInitSegmentId_=h}))}}t.byteLength=t.bytes.byteLength,"number"==typeof i.start&&"number"==typeof i.end?this.mediaSecondsLoaded+=i.end-i.start:this.mediaSecondsLoaded+=i.duration,this.logger_(function(e){var t=e.segment,i=t.start,n=t.end,r=e.playlist,s=r.mediaSequence,a=r.id,o=r.segments,u=void 0===o?[]:o,l=e.mediaIndex,c=e.timeline;return["appending ["+l+"] of ["+s+", "+(s+u.length)+"] from playlist ["+a+"]","["+i+" => "+n+"] in timeline ["+c+"]"].join(" ")}(t)),this.sourceUpdater_.appendBuffer({bytes:t.bytes,videoSegmentTimingInfoCallback:this.handleVideoSegmentTimingInfo_.bind(this,t.requestId)},this.handleUpdateEnd_.bind(this))}else this.state="READY"}},{key:"handleVideoSegmentTimingInfo_",value:function(e,t){if(this.pendingSegment_&&e===this.pendingSegment_.requestId){var i=this.pendingSegment_.segment;i.videoTimingInfo||(i.videoTimingInfo={}),i.videoTimingInfo.transmuxerPrependedSeconds=t.videoSegmentTimingInfo.prependedContentDuration||0,i.videoTimingInfo.transmuxedPresentationStart=t.videoSegmentTimingInfo.start.presentation,i.videoTimingInfo.transmuxedPresentationEnd=t.videoSegmentTimingInfo.end.presentation,i.videoTimingInfo.baseMediaDecodeTime=t.videoSegmentTimingInfo.baseMediaDecodeTime}}},{key:"handleUpdateEnd_",value:function(){if(!this.pendingSegment_)return this.state="READY",void(this.paused()||this.monitorBuffer_());var e=this.pendingSegment_,t=e.segment,i=null!==this.mediaIndex;this.pendingSegment_=null,this.recordThroughput_(e),this.addSegmentMetadataCue_(e),this.state="READY",this.mediaIndex=e.mediaIndex,this.fetchAtBuffer_=!0,this.currentTimeline_=e.timeline,this.trigger("syncinfoupdate"),t.end&&this.currentTime_()-t.end>3*e.playlist.targetDuration?this.resetEverything():(i&&this.trigger("bandwidthupdate"),this.trigger("progress"),this.isEndOfStream_(e.mediaIndex+1,e.playlist)&&this.endOfStream(),this.paused()||this.monitorBuffer_())}},{key:"recordThroughput_",value:function(e){var t=this.throughput.rate,i=Date.now()-e.endOfAllRequests+1,n=Math.floor(e.byteLength/i*8*1e3);this.throughput.rate+=(n-t)/++this.throughput.count}},{key:"addSegmentMetadataCue_",value:function(e){if(this.segmentMetadataTrack_){var t=e.segment,i=t.start,n=t.end;if(Ih(i)&&Ih(n)){Pc(i,n,this.segmentMetadataTrack_);var r=K.WebKitDataCue||K.VTTCue,s={custom:t.custom,dateTimeObject:t.dateTimeObject,dateTimeString:t.dateTimeString,bandwidth:e.playlist.attributes.BANDWIDTH,resolution:e.playlist.attributes.RESOLUTION,codecs:e.playlist.attributes.CODECS,byteLength:e.byteLength,uri:e.uri,timeline:e.timeline,playlist:e.playlist.id,start:i,end:n},a=new r(i,n,JSON.stringify(s));a.value=s,this.segmentMetadataTrack_.addCue(a)}}}}]),t}(Il.EventTarget),Lh=function(e){return decodeURIComponent(escape(String.fromCharCode.apply(null,e)))},Oh=new Uint8Array("\n\n".split("").map((function(e){return e.charCodeAt(0)}))),Dh=function(e){function t(e){var i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};Nl(this,t);var n=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this,e,i));return n.mediaSource_=null,n.subtitlesTrack_=null,n.featuresNativeTextTracks_=e.featuresNativeTextTracks,n}return Ul(t,e),Rl(t,[{key:"buffered_",value:function(){if(!this.subtitlesTrack_||!this.subtitlesTrack_.cues.length)return Il.createTimeRanges();var e=this.subtitlesTrack_.cues,t=e[0].startTime,i=e[e.length-1].startTime;return Il.createTimeRanges([[t,i]])}},{key:"initSegment",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!e)return null;var i=_c(e),n=this.initSegments_[i];if(t&&!n&&e.bytes){var r=Oh.byteLength+e.bytes.byteLength,s=new Uint8Array(r);s.set(e.bytes),s.set(Oh,e.bytes.byteLength),this.initSegments_[i]=n={resolvedUri:e.resolvedUri,byterange:e.byterange,bytes:s}}return n||e}},{key:"couldBeginLoading_",value:function(){return this.playlist_&&this.subtitlesTrack_&&!this.paused()}},{key:"init_",value:function(){return this.state="READY",this.resetEverything(),this.monitorBuffer_()}},{key:"track",value:function(e){return void 0===e||(this.subtitlesTrack_=e,"INIT"===this.state&&this.couldBeginLoading_()&&this.init_()),this.subtitlesTrack_}},{key:"remove",value:function(e,t){Pc(e,t,this.subtitlesTrack_)}},{key:"fillBuffer_",value:function(){var e=this;this.syncPoint_||(this.syncPoint_=this.syncController_.getSyncPoint(this.playlist_,this.duration_(),this.currentTimeline_,this.currentTime_()));var t=this.checkBuffer_(this.buffered_(),this.playlist_,this.mediaIndex,this.hasPlayed_(),this.currentTime_(),this.syncPoint_);if(t=this.skipEmptySegments_(t)){if(null===this.syncController_.timestampOffsetForTimeline(t.timeline)){return this.syncController_.one("timestampoffset",(function(){e.state="READY",e.paused()||e.monitorBuffer_()})),void(this.state="WAITING_ON_TIMELINE")}this.loadSegment_(t)}}},{key:"skipEmptySegments_",value:function(e){for(;e&&e.segment.empty;)e=this.generateSegmentInfo_(e.playlist,e.mediaIndex+1,e.startOfSegment+e.duration,e.isSyncRequest);return e}},{key:"handleSegment_",value:function(){var e=this;if(this.pendingSegment_&&this.subtitlesTrack_){this.state="APPENDING";var t=this.pendingSegment_,i=t.segment;if("function"!=typeof K.WebVTT&&this.subtitlesTrack_&&this.subtitlesTrack_.tech_){var n=void 0,r=function(){e.subtitlesTrack_.tech_.off("vttjsloaded",n),e.error({message:"Error loading vtt.js"}),e.state="READY",e.pause(),e.trigger("error")};return n=function(){e.subtitlesTrack_.tech_.off("vttjserror",r),e.handleSegment_()},this.state="WAITING_ON_VTTJS",this.subtitlesTrack_.tech_.one("vttjsloaded",n),void this.subtitlesTrack_.tech_.one("vttjserror",r)}i.requested=!0;try{this.parseVTTCues_(t)}catch(e){return this.error({message:e.message}),this.state="READY",this.pause(),this.trigger("error")}if(this.updateTimeMapping_(t,this.syncController_.timelines[t.timeline],this.playlist_),t.isSyncRequest)return this.trigger("syncinfoupdate"),this.pendingSegment_=null,void(this.state="READY");t.byteLength=t.bytes.byteLength,this.mediaSecondsLoaded+=i.duration,t.cues.length&&this.remove(t.cues[0].endTime,t.cues[t.cues.length-1].endTime),t.cues.forEach((function(t){e.subtitlesTrack_.addCue(e.featuresNativeTextTracks_?new K.VTTCue(t.startTime,t.endTime,t.text):t)})),this.handleUpdateEnd_()}else this.state="READY"}},{key:"parseVTTCues_",value:function(e){var t=void 0,i=!1;"function"==typeof K.TextDecoder?t=new K.TextDecoder("utf8"):(t=K.WebVTT.StringDecoder(),i=!0);var n=new K.WebVTT.Parser(K,K.vttjs,t);if(e.cues=[],e.timestampmap={MPEGTS:0,LOCAL:0},n.oncue=e.cues.push.bind(e.cues),n.ontimestampmap=function(t){return e.timestampmap=t},n.onparsingerror=function(e){Il.log.warn("Error encountered when parsing cues: "+e.message)},e.segment.map){var r=e.segment.map.bytes;i&&(r=Lh(r)),n.parse(r)}var s=e.bytes;i&&(s=Lh(s)),n.parse(s),n.flush()}},{key:"updateTimeMapping_",value:function(e,t,i){var n=e.segment;if(t)if(e.cues.length){var r=e.timestampmap,s=r.MPEGTS/9e4-r.LOCAL+t.mapping;if(e.cues.forEach((function(e){e.startTime+=s,e.endTime+=s})),!i.syncInfo){var a=e.cues[0].startTime,o=e.cues[e.cues.length-1].startTime;i.syncInfo={mediaSequence:i.mediaSequence+e.mediaIndex,time:Math.min(a,o-n.duration)}}}else n.empty=!0}}]),t}(Ph),Nh=function(e,t){for(var i=e.cues,n=0;n=r.adStartTime&&t<=r.adEndTime)return r}return null},Rh=Tr,Uh=[{name:"VOD",run:function(e,t,i,n,r){if(i!==1/0){return{time:0,segmentIndex:0}}return null}},{name:"ProgramDateTime",run:function(e,t,i,n,r){if(!e.datetimeToDisplayTime)return null;var s=t.segments||[],a=null,o=null;r=r||0;for(var u=0;u=c)&&(o=c,a={time:l.start,segmentIndex:u})}}return a}},{name:"Discontinuity",run:function(e,t,i,n,r){var s=null;if(r=r||0,t.discontinuityStarts&&t.discontinuityStarts.length)for(var a=null,o=0;o=h)&&(a=h,s={time:c.time,segmentIndex:u})}}return s}},{name:"Playlist",run:function(e,t,i,n,r){return t.syncInfo?{time:t.syncInfo.time,segmentIndex:t.syncInfo.mediaSequence-t.mediaSequence}:null}}],Mh=function(e){function t(){Nl(this,t);var e=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this));return e.inspectCache_=void 0,e.timelines=[],e.discontinuities=[],e.datetimeToDisplayTime=null,e.logger_=ph("SyncController"),e}return Ul(t,e),Rl(t,[{key:"getSyncPoint",value:function(e,t,i,n){var r=this.runStrategies_(e,t,i,n);return r.length?this.selectSyncPoint_(r,{key:"time",value:n}):null}},{key:"getExpiredTime",value:function(e,t){if(!e||!e.segments)return null;var i=this.runStrategies_(e,t,e.discontinuitySequence,0);if(!i.length)return null;var n=this.selectSyncPoint_(i,{key:"segmentIndex",value:0});return n.segmentIndex>0&&(n.time*=-1),Math.abs(n.time+Jl(e,n.segmentIndex,0))}},{key:"runStrategies_",value:function(e,t,i,n){for(var r=[],s=0;s=0;i--){var n=e.segments[i];if(n&&void 0!==n.start){t.syncInfo={mediaSequence:e.mediaSequence+i,time:n.start},this.logger_("playlist refresh sync: [time:"+t.syncInfo.time+", mediaSequence: "+t.syncInfo.mediaSequence+"]"),this.trigger("syncinfoupdate");break}}}},{key:"setDateTimeMapping",value:function(e){if(!this.datetimeToDisplayTime&&e.segments&&e.segments.length&&e.segments[0].dateTimeObject){var t=e.segments[0].dateTimeObject.getTime()/1e3;this.datetimeToDisplayTime=-t}}},{key:"reset",value:function(){this.inspectCache_=void 0}},{key:"probeSegmentInfo",value:function(e){var t=e.segment,i=e.playlist,n=void 0;return(n=t.map?this.probeMp4Segment_(e):this.probeTsSegment_(e))&&this.calculateSegmentTimeMapping_(e,n)&&(this.saveDiscontinuitySyncInfo_(e),i.syncInfo||(i.syncInfo={mediaSequence:i.mediaSequence+e.mediaIndex,time:t.start})),n}},{key:"probeMp4Segment_",value:function(e){var t=e.segment,i=On.timescale(t.map.bytes),n=On.compositionStartTime(i,e.bytes);return null!==e.timestampOffset&&(e.timestampOffset-=n),{start:n,end:n+t.duration}}},{key:"probeTsSegment_",value:function(e){var t=Rh(e.bytes,this.inspectCache_),i=void 0,n=void 0,r=void 0;return t?(t.video&&2===t.video.length?(this.inspectCache_=t.video[1].dts,i=t.video[0].dtsTime,n=t.video[1].dtsTime,r=t.video):t.audio&&2===t.audio.length&&(this.inspectCache_=t.audio[1].dts,i=t.audio[0].dtsTime,n=t.audio[1].dtsTime,r=t.audio),{segmentTimestampInfo:r,start:i,end:n,containsVideo:t.video&&2===t.video.length,containsAudio:t.audio&&2===t.audio.length}):null}},{key:"timestampOffsetForTimeline",value:function(e){return void 0===this.timelines[e]?null:this.timelines[e].time}},{key:"mappingForTimeline",value:function(e){return void 0===this.timelines[e]?null:this.timelines[e].mapping}},{key:"calculateSegmentTimeMapping_",value:function(e,t){var i=e.segment,n=this.timelines[e.timeline];if(null!==e.timestampOffset)n={time:e.startOfSegment,mapping:e.startOfSegment-t.start},this.timelines[e.timeline]=n,this.trigger("timestampoffset"),this.logger_("time mapping for timeline "+e.timeline+": [time: "+n.time+"] [mapping: "+n.mapping+"]"),i.start=e.startOfSegment,i.end=t.end+n.mapping;else{if(!n)return!1;i.start=t.start+n.mapping,i.end=t.end+n.mapping}return!0}},{key:"saveDiscontinuitySyncInfo_",value:function(e){var t=e.playlist,i=e.segment;if(i.discontinuity)this.discontinuities[i.timeline]={time:i.start,accuracy:0};else if(t.discontinuityStarts&&t.discontinuityStarts.length)for(var n=0;no){var u=void 0;u=a<0?i.start-Jl(t,e.mediaIndex,r):i.end+Jl(t,e.mediaIndex+1,r),this.discontinuities[s]={time:u,accuracy:o}}}}},{key:"dispose",value:function(){this.trigger("dispose"),this.off()}}]),t}(Il.EventTarget),Bh=new Bc("./decrypter-worker.worker.js",(function(e,t){var i=this;!function(){var e=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},t=function(){function e(e,t){for(var i=0;i>7))^s]=s;for(a=o=0;!n[a];a^=c||1,o=l[o]||1)for(d=(d=o^o<<1^o<<2^o<<3^o<<4)>>8^255&d^99,n[a]=d,r[d]=a,f=16843009*u[h=u[c=u[a]]]^65537*h^257*c^16843008*a,p=257*u[d]^16843008*d,s=0;s<4;s++)t[s][a]=p=p<<24^p>>>8,i[s][d]=f=f<<24^f>>>8;for(s=0;s<5;s++)t[s]=t[s].slice(0),i[s]=i[s].slice(0);return e}()),this._tables=[[n[0][0].slice(),n[0][1].slice(),n[0][2].slice(),n[0][3].slice(),n[0][4].slice()],[n[1][0].slice(),n[1][1].slice(),n[1][2].slice(),n[1][3].slice(),n[1][4].slice()]];var r=void 0,s=void 0,a=void 0,o=void 0,u=void 0,l=this._tables[0][4],c=this._tables[1],h=i.length,d=1;if(4!==h&&6!==h&&8!==h)throw new Error("Invalid aes key size");for(o=i.slice(0),u=[],this._key=[o,u],r=h;r<4*h+28;r++)a=o[r-1],(r%h==0||8===h&&r%h==4)&&(a=l[a>>>24]<<24^l[a>>16&255]<<16^l[a>>8&255]<<8^l[255&a],r%h==0&&(a=a<<8^a>>>24^d<<24,d=d<<1^283*(d>>7))),o[r]=o[r-h]^a;for(s=0;r;s++,r--)a=o[3&s?r:r-4],u[s]=r<=4||s<4?a:c[0][l[a>>>24]]^c[1][l[a>>16&255]]^c[2][l[a>>8&255]]^c[3][l[255&a]]}return t.prototype.decrypt=function(e,t,i,n,r,s){var a=this._key[1],o=e^a[0],u=n^a[1],l=i^a[2],c=t^a[3],h=void 0,d=void 0,p=void 0,f=a.length/4-2,m=void 0,g=4,v=this._tables[1],y=v[0],_=v[1],b=v[2],T=v[3],S=v[4];for(m=0;m>>24]^_[u>>16&255]^b[l>>8&255]^T[255&c]^a[g],d=y[u>>>24]^_[l>>16&255]^b[c>>8&255]^T[255&o]^a[g+1],p=y[l>>>24]^_[c>>16&255]^b[o>>8&255]^T[255&u]^a[g+2],c=y[c>>>24]^_[o>>16&255]^b[u>>8&255]^T[255&l]^a[g+3],g+=4,o=h,u=d,l=p;for(m=0;m<4;m++)r[(3&-m)+s]=S[o>>>24]<<24^S[u>>16&255]<<16^S[l>>8&255]<<8^S[255&c]^a[g++],h=o,o=u,u=l,l=c,c=h},t}(),s=function(){function t(){e(this,t),this.listeners={}}return t.prototype.on=function(e,t){this.listeners[e]||(this.listeners[e]=[]),this.listeners[e].push(t)},t.prototype.off=function(e,t){if(!this.listeners[e])return!1;var i=this.listeners[e].indexOf(t);return this.listeners[e].splice(i,1),i>-1},t.prototype.trigger=function(e){var t=this.listeners[e];if(t)if(2===arguments.length)for(var i=t.length,n=0;n>8|e>>>24},u=function(){function i(t,n,r,s){e(this,i);var u=i.STEP,l=new Int32Array(t.buffer),c=new Uint8Array(t.byteLength),h=0;for(this.asyncStream_=new a,this.asyncStream_.push(this.decryptChunk_(l.subarray(h,h+u),n,r,c)),h=u;h>2),s=new r(Array.prototype.slice.call(t)),a=new Uint8Array(e.byteLength),u=new Int32Array(a.buffer),l=void 0,c=void 0,h=void 0,d=void 0,p=void 0,f=void 0,m=void 0,g=void 0,v=void 0;for(l=i[0],c=i[1],h=i[2],d=i[3],v=0;v=0&&(t="main-desc"),t},Fh=function(e,t){e.abort(),e.pause(),t&&t.activePlaylistLoader&&(t.activePlaylistLoader.pause(),t.activePlaylistLoader=null)},Hh=function(e,t){t.activePlaylistLoader=e,e.load()},Vh={AUDIO:function(e,t){return function(){var i=t.segmentLoaders[e],n=t.mediaTypes[e],r=t.blacklistCurrentPlaylist;Fh(i,n);var s=n.activeTrack(),a=n.activeGroup(),o=(a.filter((function(e){return e.default}))[0]||a[0]).id,u=n.tracks[o];if(s!==u){for(var l in Il.log.warn("Problem encountered loading the alternate audio track.Switching back to default."),n.tracks)n.tracks[l].enabled=n.tracks[l]===u;n.onTrackChanged()}else r({message:"Problem encountered loading the default audio track."})}},SUBTITLES:function(e,t){return function(){var i=t.segmentLoaders[e],n=t.mediaTypes[e];Il.log.warn("Problem encountered loading the subtitle track.Disabling subtitle track."),Fh(i,n);var r=n.activeTrack();r&&(r.mode="disabled"),n.onTrackChanged()}}},qh={AUDIO:function(e,t,i){if(t){var n=i.tech,r=i.requestOptions,s=i.segmentLoaders[e];t.on("loadedmetadata",(function(){var e=t.media();s.playlist(e,r),(!n.paused()||e.endList&&"none"!==n.preload())&&s.load()})),t.on("loadedplaylist",(function(){s.playlist(t.media(),r),n.paused()||s.load()})),t.on("error",Vh[e](e,i))}},SUBTITLES:function(e,t,i){var n=i.tech,r=i.requestOptions,s=i.segmentLoaders[e],a=i.mediaTypes[e];t.on("loadedmetadata",(function(){var e=t.media();s.playlist(e,r),s.track(a.activeTrack()),(!n.paused()||e.endList&&"none"!==n.preload())&&s.load()})),t.on("loadedplaylist",(function(){s.playlist(t.media(),r),n.paused()||s.load()})),t.on("error",Vh[e](e,i))}},Wh={AUDIO:function(e,t){var i=t.hls,n=t.sourceType,r=t.segmentLoaders[e],s=t.requestOptions,a=t.master.mediaGroups,o=t.mediaTypes[e],u=o.groups,l=o.tracks,c=t.masterPlaylistLoader;for(var h in a[e]&&0!==Object.keys(a[e]).length||(a[e]={main:{default:{default:!0}}}),a[e])for(var d in u[h]||(u[h]=[]),a[e][h]){var p=a[e][h][d],f=void 0;if(f=p.resolvedUri?new Xl(p.resolvedUri,i,s):p.playlists&&"dash"===n?new dh(p.playlists[0],i,s,c):null,p=Il.mergeOptions({id:d,playlistLoader:f},p),qh[e](e,p.playlistLoader,t),u[h].push(p),void 0===l[d]){var m=new Il.AudioTrack({id:d,kind:jh(p),enabled:!1,language:p.language,default:p.default,label:d});l[d]=m}}r.on("error",Vh[e](e,t))},SUBTITLES:function(e,t){var i=t.tech,n=t.hls,r=t.sourceType,s=t.segmentLoaders[e],a=t.requestOptions,o=t.master.mediaGroups,u=t.mediaTypes[e],l=u.groups,c=u.tracks,h=t.masterPlaylistLoader;for(var d in o[e])for(var p in l[d]||(l[d]=[]),o[e][d])if(!o[e][d][p].forced){var f=o[e][d][p],m=void 0;if("hls"===r?m=new Xl(f.resolvedUri,n,a):"dash"===r&&(m=new dh(f.playlists[0],n,a,h)),f=Il.mergeOptions({id:p,playlistLoader:m},f),qh[e](e,f.playlistLoader,t),l[d].push(f),void 0===c[p]){var g=i.addRemoteTextTrack({id:p,kind:"subtitles",default:f.default&&f.autoselect,language:f.language,label:p},!1).track;c[p]=g}}s.on("error",Vh[e](e,t))},"CLOSED-CAPTIONS":function(e,t){var i=t.tech,n=t.master.mediaGroups,r=t.mediaTypes[e],s=r.groups,a=r.tracks;for(var o in n[e])for(var u in s[o]||(s[o]=[]),n[e][o]){var l=n[e][o][u];if(l.instreamId.match(/CC\d/)&&(s[o].push(Il.mergeOptions({id:u},l)),void 0===a[u])){var c=i.addRemoteTextTrack({id:l.instreamId,kind:"captions",default:l.default&&l.autoselect,language:l.language,label:u},!1).track;a[u]=c}}}},zh={AUDIO:function(e,t){return function(){var i=t.mediaTypes[e].tracks;for(var n in i)if(i[n].enabled)return i[n];return null}},SUBTITLES:function(e,t){return function(){var i=t.mediaTypes[e].tracks;for(var n in i)if("showing"===i[n].mode||"hidden"===i[n].mode)return i[n];return null}}},Gh=function(e){["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((function(t){Wh[t](t,e)}));var t=e.mediaTypes,i=e.masterPlaylistLoader,n=e.tech,r=e.hls;["AUDIO","SUBTITLES"].forEach((function(i){t[i].activeGroup=function(e,t){return function(i){var n=t.masterPlaylistLoader,r=t.mediaTypes[e].groups,s=n.media();if(!s)return null;var a=null;return s.attributes[e]&&(a=r[s.attributes[e]]),a=a||r.main,void 0===i?a:null===i?null:a.filter((function(e){return e.id===i.id}))[0]||null}}(i,e),t[i].activeTrack=zh[i](i,e),t[i].onGroupChanged=function(e,t){return function(){var i=t.segmentLoaders,n=i[e],r=i.main,s=t.mediaTypes[e],a=s.activeTrack(),o=s.activeGroup(a),u=s.activePlaylistLoader;Fh(n,s),o&&(o.playlistLoader?(n.resyncLoader(),Hh(o.playlistLoader,s)):u&&r.resetEverything())}}(i,e),t[i].onTrackChanged=function(e,t){return function(){var i=t.segmentLoaders,n=i[e],r=i.main,s=t.mediaTypes[e],a=s.activeTrack(),o=s.activeGroup(a),u=s.activePlaylistLoader;Fh(n,s),o&&(o.playlistLoader?u!==o.playlistLoader?(n.track&&n.track(a),n.resetEverything(),Hh(o.playlistLoader,s)):Hh(o.playlistLoader,s):r.resetEverything())}}(i,e)}));var s=t.AUDIO.activeGroup(),a=(s.filter((function(e){return e.default}))[0]||s[0]).id;t.AUDIO.tracks[a].enabled=!0,t.AUDIO.onTrackChanged(),i.on("mediachange",(function(){["AUDIO","SUBTITLES"].forEach((function(e){return t[e].onGroupChanged()}))}));var o=function(){t.AUDIO.onTrackChanged(),n.trigger({type:"usage",name:"hls-audio-change"})};for(var u in n.audioTracks().addEventListener("change",o),n.remoteTextTracks().addEventListener("change",t.SUBTITLES.onTrackChanged),r.on("dispose",(function(){n.audioTracks().removeEventListener("change",o),n.remoteTextTracks().removeEventListener("change",t.SUBTITLES.onTrackChanged)})),n.clearTracks("audio"),t.AUDIO.tracks)n.audioTracks().addTrack(t.AUDIO.tracks[u])},$h=void 0,Xh=["mediaRequests","mediaRequestsAborted","mediaRequestsTimedout","mediaRequestsErrored","mediaTransferDuration","mediaBytesTransferred"],Kh=function(e){return this.audioSegmentLoader_[e]+this.mainSegmentLoader_[e]},Yh=function(e){function t(e){Nl(this,t);var i,n=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this)),r=e.url,s=e.handleManifestRedirects,a=e.withCredentials,o=e.tech,u=e.bandwidth,l=e.externHls,c=e.useCueTags,h=e.blacklistDuration,d=e.enableLowInitialPlaylist,p=e.cacheEncryptionKeys,f=e.sourceType;if(!r)throw new Error("A non-empty playlist URL is required");$h=l,n.withCredentials=a,n.tech_=o,n.hls_=o.hls,n.sourceType_=f,n.useCueTags_=c,n.blacklistDuration=h,n.enableLowInitialPlaylist=d,n.useCueTags_&&(n.cueTagsTrack_=n.tech_.addTextTrack("metadata","ad-cues"),n.cueTagsTrack_.inBandMetadataTrackDispatchType=""),n.requestOptions_={withCredentials:a,handleManifestRedirects:s,timeout:null},n.mediaTypes_=(i={},["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((function(e){i[e]={groups:{},tracks:{},activePlaylistLoader:null,activeGroup:fh,activeTrack:fh,onGroupChanged:fh,onTrackChanged:fh}})),i),n.mediaSource=new Il.MediaSource,n.mediaSource.addEventListener("sourceopen",n.handleSourceOpen_.bind(n)),n.seekable_=Il.createTimeRanges(),n.hasPlayed_=!1,n.syncController_=new Mh(e),n.segmentMetadataTrack_=o.addRemoteTextTrack({kind:"metadata",label:"segment-metadata"},!1).track,n.decrypter_=new Bh,n.inbandTextTracks_={};var m={hls:n.hls_,mediaSource:n.mediaSource,currentTime:n.tech_.currentTime.bind(n.tech_),seekable:function(){return n.seekable()},seeking:function(){return n.tech_.seeking()},duration:function(){return n.mediaSource.duration},hasPlayed:function(){return n.hasPlayed_},goalBufferLength:function(){return n.goalBufferLength()},bandwidth:u,syncController:n.syncController_,decrypter:n.decrypter_,sourceType:n.sourceType_,inbandTextTracks:n.inbandTextTracks_,cacheEncryptionKeys:p};return n.masterPlaylistLoader_="dash"===n.sourceType_?new dh(r,n.hls_,n.requestOptions_):new Xl(r,n.hls_,n.requestOptions_),n.setupMasterPlaylistLoaderListeners_(),n.mainSegmentLoader_=new Ph(Il.mergeOptions(m,{segmentMetadataTrack:n.segmentMetadataTrack_,loaderType:"main"}),e),n.audioSegmentLoader_=new Ph(Il.mergeOptions(m,{loaderType:"audio"}),e),n.subtitleSegmentLoader_=new Dh(Il.mergeOptions(m,{loaderType:"vtt",featuresNativeTextTracks:n.tech_.featuresNativeTextTracks}),e),n.setupSegmentLoaderListeners_(),Xh.forEach((function(e){n[e+"_"]=Kh.bind(n,e)})),n.logger_=ph("MPC"),n.masterPlaylistLoader_.load(),n}return Ul(t,e),Rl(t,[{key:"setupMasterPlaylistLoaderListeners_",value:function(){var e=this;this.masterPlaylistLoader_.on("loadedmetadata",(function(){var t=e.masterPlaylistLoader_.media(),i=1.5*t.targetDuration*1e3;lc(e.masterPlaylistLoader_.master,e.masterPlaylistLoader_.media())?e.requestOptions_.timeout=0:e.requestOptions_.timeout=i,t.endList&&"none"!==e.tech_.preload()&&(e.mainSegmentLoader_.playlist(t,e.requestOptions_),e.mainSegmentLoader_.load()),Gh({sourceType:e.sourceType_,segmentLoaders:{AUDIO:e.audioSegmentLoader_,SUBTITLES:e.subtitleSegmentLoader_,main:e.mainSegmentLoader_},tech:e.tech_,requestOptions:e.requestOptions_,masterPlaylistLoader:e.masterPlaylistLoader_,hls:e.hls_,master:e.master(),mediaTypes:e.mediaTypes_,blacklistCurrentPlaylist:e.blacklistCurrentPlaylist.bind(e)}),e.triggerPresenceUsage_(e.master(),t);try{e.setupSourceBuffers_()}catch(t){return Il.log.warn("Failed to create SourceBuffers",t),e.mediaSource.endOfStream("decode")}e.setupFirstPlay(),!e.mediaTypes_.AUDIO.activePlaylistLoader||e.mediaTypes_.AUDIO.activePlaylistLoader.media()?e.trigger("selectedinitialmedia"):e.mediaTypes_.AUDIO.activePlaylistLoader.one("loadedmetadata",(function(){e.trigger("selectedinitialmedia")}))})),this.masterPlaylistLoader_.on("loadedplaylist",(function(){var t=e.masterPlaylistLoader_.media();if(!t){e.excludeUnsupportedVariants_();var i=void 0;return e.enableLowInitialPlaylist&&(i=e.selectInitialPlaylist()),i||(i=e.selectPlaylist()),e.initialMedia_=i,void e.masterPlaylistLoader_.media(e.initialMedia_)}if(e.useCueTags_&&e.updateAdCues_(t),e.mainSegmentLoader_.playlist(t,e.requestOptions_),e.updateDuration(),e.tech_.paused()||(e.mainSegmentLoader_.load(),e.audioSegmentLoader_&&e.audioSegmentLoader_.load()),!t.endList){var n=function(){var t=e.seekable();0!==t.length&&e.mediaSource.addSeekableRange_(t.start(0),t.end(0))};if(e.duration()!==1/0){e.tech_.one("durationchange",(function t(){e.duration()===1/0?n():e.tech_.one("durationchange",t)}))}else n()}})),this.masterPlaylistLoader_.on("error",(function(){e.blacklistCurrentPlaylist(e.masterPlaylistLoader_.error)})),this.masterPlaylistLoader_.on("mediachanging",(function(){e.mainSegmentLoader_.abort(),e.mainSegmentLoader_.pause()})),this.masterPlaylistLoader_.on("mediachange",(function(){var t=e.masterPlaylistLoader_.media(),i=1.5*t.targetDuration*1e3;lc(e.masterPlaylistLoader_.master,e.masterPlaylistLoader_.media())?e.requestOptions_.timeout=0:e.requestOptions_.timeout=i,e.mainSegmentLoader_.playlist(t,e.requestOptions_),e.mainSegmentLoader_.load(),e.tech_.trigger({type:"mediachange",bubbles:!0})})),this.masterPlaylistLoader_.on("playlistunchanged",(function(){var t=e.masterPlaylistLoader_.media();e.stuckAtPlaylistEnd_(t)&&(e.blacklistCurrentPlaylist({message:"Playlist no longer updating."}),e.tech_.trigger("playliststuck"))})),this.masterPlaylistLoader_.on("renditiondisabled",(function(){e.tech_.trigger({type:"usage",name:"hls-rendition-disabled"})})),this.masterPlaylistLoader_.on("renditionenabled",(function(){e.tech_.trigger({type:"usage",name:"hls-rendition-enabled"})}))}},{key:"triggerPresenceUsage_",value:function(e,t){var i=e.mediaGroups||{},n=!0,r=Object.keys(i.AUDIO);for(var s in i.AUDIO)for(var a in i.AUDIO[s]){i.AUDIO[s][a].uri||(n=!1)}n&&this.tech_.trigger({type:"usage",name:"hls-demuxed"}),Object.keys(i.SUBTITLES).length&&this.tech_.trigger({type:"usage",name:"hls-webvtt"}),$h.Playlist.isAes(t)&&this.tech_.trigger({type:"usage",name:"hls-aes"}),$h.Playlist.isFmp4(t)&&this.tech_.trigger({type:"usage",name:"hls-fmp4"}),r.length&&Object.keys(i.AUDIO[r[0]]).length>1&&this.tech_.trigger({type:"usage",name:"hls-alternate-audio"}),this.useCueTags_&&this.tech_.trigger({type:"usage",name:"hls-playlist-cue-tags"})}},{key:"setupSegmentLoaderListeners_",value:function(){var e=this;this.mainSegmentLoader_.on("bandwidthupdate",(function(){var t=e.selectPlaylist(),i=e.masterPlaylistLoader_.media(),n=e.tech_.buffered();(function(e){var t=e.currentPlaylist,i=e.nextPlaylist,n=e.forwardBuffer,r=e.bufferLowWaterLine,s=e.duration;e.log;return i?!t.endList||(s=r)):(Il.log.warn("We received no playlist to switch to. Please check your stream."),!1)})({currentPlaylist:i,nextPlaylist:t,forwardBuffer:n.length?n.end(n.length-1)-e.tech_.currentTime():0,bufferLowWaterLine:e.bufferLowWaterLine(),duration:e.duration(),log:e.logger_})&&e.masterPlaylistLoader_.media(t),e.tech_.trigger("bandwidthupdate")})),this.mainSegmentLoader_.on("progress",(function(){e.trigger("progress")})),this.mainSegmentLoader_.on("error",(function(){e.blacklistCurrentPlaylist(e.mainSegmentLoader_.error())})),this.mainSegmentLoader_.on("syncinfoupdate",(function(){e.onSyncInfoUpdate_()})),this.mainSegmentLoader_.on("timestampoffset",(function(){e.tech_.trigger({type:"usage",name:"hls-timestamp-offset"})})),this.audioSegmentLoader_.on("syncinfoupdate",(function(){e.onSyncInfoUpdate_()})),this.mainSegmentLoader_.on("ended",(function(){e.onEndOfStream()})),this.mainSegmentLoader_.on("earlyabort",(function(){e.blacklistCurrentPlaylist({message:"Aborted early because there isn't enough bandwidth to complete the request without rebuffering."},120)})),this.mainSegmentLoader_.on("reseteverything",(function(){e.tech_.trigger("hls-reset")})),this.mainSegmentLoader_.on("segmenttimemapping",(function(t){e.tech_.trigger({type:"hls-segment-time-mapping",mapping:t.mapping})})),this.audioSegmentLoader_.on("ended",(function(){e.onEndOfStream()}))}},{key:"mediaSecondsLoaded_",value:function(){return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded+this.mainSegmentLoader_.mediaSecondsLoaded)}},{key:"load",value:function(){this.mainSegmentLoader_.load(),this.mediaTypes_.AUDIO.activePlaylistLoader&&this.audioSegmentLoader_.load(),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&this.subtitleSegmentLoader_.load()}},{key:"smoothQualityChange_",value:function(){var e=this.selectPlaylist();e!==this.masterPlaylistLoader_.media()&&(this.masterPlaylistLoader_.media(e),this.mainSegmentLoader_.resetLoader())}},{key:"fastQualityChange_",value:function(){var e=this,t=this.selectPlaylist();t!==this.masterPlaylistLoader_.media()&&(this.masterPlaylistLoader_.media(t),this.mainSegmentLoader_.resetEverything((function(){Il.browser.IE_VERSION||Il.browser.IS_EDGE?e.tech_.setCurrentTime(e.tech_.currentTime()+.04):e.tech_.setCurrentTime(e.tech_.currentTime())})))}},{key:"play",value:function(){if(!this.setupFirstPlay()){this.tech_.ended()&&this.tech_.setCurrentTime(0),this.hasPlayed_&&this.load();var e=this.tech_.seekable();return this.tech_.duration()===1/0&&this.tech_.currentTime()0&&void 0!==arguments[0]?arguments[0]:{},t=arguments[1],i=void 0,n=void 0;if(i=e.playlist||this.masterPlaylistLoader_.media(),t=t||e.blacklistDuration||this.blacklistDuration,!i){this.error=e;try{return this.mediaSource.endOfStream("network")}catch(e){return this.trigger("error")}}var r=1===this.masterPlaylistLoader_.master.playlists.filter(oc).length,s=this.masterPlaylistLoader_.master.playlists;return 1===s.length?(Il.log.warn("Problem encountered with the current HLS playlist. Trying again since it is the only playlist."),this.tech_.trigger("retryplaylist"),this.masterPlaylistLoader_.load(r)):(r&&(Il.log.warn("Removing all playlists from the blacklist because the last rendition is about to be blacklisted."),s.forEach((function(e){e.excludeUntil!==1/0&&delete e.excludeUntil})),this.tech_.trigger("retryplaylist")),i.excludeUntil=Date.now()+1e3*t,this.tech_.trigger("blacklistplaylist"),this.tech_.trigger({type:"usage",name:"hls-rendition-blacklisted"}),n=this.selectPlaylist(),Il.log.warn("Problem encountered with the current HLS playlist."+(e.message?" "+e.message:"")+" Switching to another playlist."),this.masterPlaylistLoader_.media(n,r))}},{key:"pauseLoading",value:function(){this.mainSegmentLoader_.pause(),this.mediaTypes_.AUDIO.activePlaylistLoader&&this.audioSegmentLoader_.pause(),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&this.subtitleSegmentLoader_.pause()}},{key:"setCurrentTime",value:function(e){var t=Ec(this.tech_.buffered(),e);return this.masterPlaylistLoader_&&this.masterPlaylistLoader_.media()&&this.masterPlaylistLoader_.media().segments?t&&t.length?e:(this.mainSegmentLoader_.resetEverything(),this.mainSegmentLoader_.abort(),this.mediaTypes_.AUDIO.activePlaylistLoader&&(this.audioSegmentLoader_.resetEverything(),this.audioSegmentLoader_.abort()),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&(this.subtitleSegmentLoader_.resetEverything(),this.subtitleSegmentLoader_.abort()),void this.load()):0}},{key:"duration",value:function(){return this.masterPlaylistLoader_?this.mediaSource?this.mediaSource.duration:$h.Playlist.duration(this.masterPlaylistLoader_.media()):0}},{key:"seekable",value:function(){return this.seekable_}},{key:"onSyncInfoUpdate_",value:function(){var e=void 0;if(this.masterPlaylistLoader_){var t=this.masterPlaylistLoader_.media();if(t){var i=this.syncController_.getExpiredTime(t,this.mediaSource.duration);if(null!==i){var n=this.masterPlaylistLoader_.master.suggestedPresentationDelay,r=$h.Playlist.seekable(t,i,n);if(0!==r.length){if(this.mediaTypes_.AUDIO.activePlaylistLoader){if(t=this.mediaTypes_.AUDIO.activePlaylistLoader.media(),null===(i=this.syncController_.getExpiredTime(t,this.mediaSource.duration)))return;if(0===(e=$h.Playlist.seekable(t,i,n)).length)return}var s=void 0,a=void 0;this.seekable_&&this.seekable_.length&&(s=this.seekable_.end(0),a=this.seekable_.start(0)),e?e.start(0)>r.end(0)||r.start(0)>e.end(0)?this.seekable_=r:this.seekable_=Il.createTimeRanges([[e.start(0)>r.start(0)?e.start(0):r.start(0),e.end(0) "+i);try{e.mediaSource.duration=i}catch(e){Il.log.warn("Failed to set media source duration",e)}e.tech_.trigger("durationchange"),e.mediaSource.removeEventListener("sourceopen",t)};n.length>0&&(i=Math.max(i,n.end(n.length-1))),t!==i&&("open"!==this.mediaSource.readyState?this.mediaSource.addEventListener("sourceopen",r):r())}},{key:"dispose",value:function(){var e=this;this.trigger("dispose"),this.decrypter_&&this.decrypter_.terminate(),this.masterPlaylistLoader_.dispose(),this.mainSegmentLoader_.dispose(),["AUDIO","SUBTITLES"].forEach((function(t){var i=e.mediaTypes_[t].groups;for(var n in i)i[n].forEach((function(e){e.playlistLoader&&e.playlistLoader.dispose()}))})),this.audioSegmentLoader_.dispose(),this.subtitleSegmentLoader_.dispose(),this.off(),this.mediaSource.dispose&&this.mediaSource.dispose()}},{key:"master",value:function(){return this.masterPlaylistLoader_.master}},{key:"media",value:function(){return this.masterPlaylistLoader_.media()||this.initialMedia_}},{key:"setupSourceBuffers_",value:function(){var e,t=this.masterPlaylistLoader_.media();if(t&&"open"===this.mediaSource.readyState){if((e=Xc(this.masterPlaylistLoader_.master,t)).length<1)return this.error="No compatible SourceBuffer configuration for the variant stream:"+t.resolvedUri,this.mediaSource.endOfStream("decode");this.configureLoaderMimeTypes_(e),this.excludeIncompatibleVariants_(t)}}},{key:"configureLoaderMimeTypes_",value:function(e){var t=e.length>1&&-1===e[0].indexOf(",")&&e[0]!==e[1]?new Il.EventTarget:null;this.mainSegmentLoader_.mimeType(e[0],t),e[1]&&this.audioSegmentLoader_.mimeType(e[1],t)}},{key:"excludeUnsupportedVariants_",value:function(){this.master().playlists.forEach((function(e){var t;e.attributes.CODECS&&K.MediaSource&&K.MediaSource.isTypeSupported&&!K.MediaSource.isTypeSupported('video/mp4; codecs="'+(t=e.attributes.CODECS,t.replace(/avc1\.(\d+)\.(\d+)/i,(function(e){return zc([e])[0]}))+'"'))&&(e.excludeUntil=1/0)}))}},{key:"excludeIncompatibleVariants_",value:function(e){var t=2,i=null,n=void 0;e.attributes.CODECS&&(n=Gc(e.attributes.CODECS),i=n.videoCodec,t=n.codecCount),this.master().playlists.forEach((function(e){var n={codecCount:2,videoCodec:null};e.attributes.CODECS&&(n=Gc(e.attributes.CODECS)),n.codecCount!==t&&(e.excludeUntil=1/0),n.videoCodec!==i&&(e.excludeUntil=1/0)}))}},{key:"updateAdCues_",value:function(e){var t=0,i=this.seekable();i.length&&(t=i.start(0)),function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0;if(e.segments)for(var n=i,r=void 0,s=0;s=t.end(t.length-1)))return this.techWaiting_();this.consecutiveUpdates>=5&&e===this.lastRecordedTime?(this.consecutiveUpdates++,this.waiting_()):e===this.lastRecordedTime?this.consecutiveUpdates++:(this.consecutiveUpdates=0,this.lastRecordedTime=e)}}},{key:"cancelTimer_",value:function(){this.consecutiveUpdates=0,this.timer_&&(this.logger_("cancelTimer_"),clearTimeout(this.timer_)),this.timer_=null}},{key:"fixesBadSeeks_",value:function(){if(!this.tech_.seeking())return!1;var e=this.seekable(),t=this.tech_.currentTime(),i=void 0;this.afterSeekableWindow_(e,t,this.media(),this.allowSeeksWithinUnsafeLiveWindow)&&(i=e.end(e.length-1));this.beforeSeekableWindow_(e,t)&&(i=e.start(0)+.1);return void 0!==i&&(this.logger_("Trying to seek outside of seekable at time "+t+" with seekable range "+Ac(e)+". Seeking to "+i+"."),this.tech_.setCurrentTime(i),!0)}},{key:"waiting_",value:function(){if(!this.techWaiting_()){var e=this.tech_.currentTime(),t=this.tech_.buffered(),i=Ec(t,e);return i.length&&e+3<=i.end(0)?(this.cancelTimer_(),this.tech_.setCurrentTime(e),this.logger_("Stopped at "+e+" while inside a buffered region ["+i.start(0)+" -> "+i.end(0)+"]. Attempting to resume playback by seeking to the current time."),void this.tech_.trigger({type:"usage",name:"hls-unknown-waiting"})):void 0}}},{key:"techWaiting_",value:function(){var e=this.seekable(),t=this.tech_.currentTime();if(this.tech_.seeking()&&this.fixesBadSeeks_())return!0;if(this.tech_.seeking()||null!==this.timer_)return!0;if(this.beforeSeekableWindow_(e,t)){var i=e.end(e.length-1);return this.logger_("Fell out of live window at time "+t+". Seeking to live point (seekable end) "+i),this.cancelTimer_(),this.tech_.setCurrentTime(i),this.tech_.trigger({type:"usage",name:"hls-live-resync"}),!0}var n=this.tech_.buffered(),r=xc(n,t);if(this.videoUnderflow_(r,n,t))return this.cancelTimer_(),this.tech_.setCurrentTime(t),this.tech_.trigger({type:"usage",name:"hls-video-underflow"}),!0;if(r.length>0){var s=r.start(0)-t;return this.logger_("Stopped at "+t+", setting timer for "+s+", seeking to "+r.start(0)),this.timer_=setTimeout(this.skipTheGap_.bind(this),1e3*s,t),!0}return!1}},{key:"afterSeekableWindow_",value:function(e,t,i){var n=arguments.length>3&&void 0!==arguments[3]&&arguments[3];if(!e.length)return!1;var r=e.end(e.length-1)+.1,s=!i.endList;return s&&n&&(r=e.end(e.length-1)+3*i.targetDuration),t>r}},{key:"beforeSeekableWindow_",value:function(e,t){return!!(e.length&&e.start(0)>0&&t2)return{start:r,end:s}}return null}}]),e}(),ed={errorInterval:30,getSource:function(e){return e(this.tech({IWillNotUseThisInPlugins:!0}).currentSource_)}},td=function(e){!function e(t,i){var n=0,r=0,s=Il.mergeOptions(ed,i);t.ready((function(){t.trigger({type:"usage",name:"hls-error-reload-initialized"})}));var a=function(){r&&t.currentTime(r)},o=function(e){null!=e&&(r=t.duration()!==1/0&&t.currentTime()||0,t.one("loadedmetadata",a),t.src(e),t.trigger({type:"usage",name:"hls-error-reload"}),t.play())},u=function(){if(Date.now()-n<1e3*s.errorInterval)t.trigger({type:"usage",name:"hls-error-reload-canceled"});else{if(s.getSource&&"function"==typeof s.getSource)return n=Date.now(),s.getSource.call(t,o);Il.log.error("ERROR: reloadSourceOnError - The option getSource must be a function!")}},l=function e(){t.off("loadedmetadata",a),t.off("error",u),t.off("dispose",e)};t.on("error",u),t.on("dispose",l),t.reloadSourceOnError=function(i){l(),e(t,i)}}(this,e)},id={PlaylistLoader:Xl,Playlist:cc,Decrypter:Pr,AsyncStream:xr,decrypt:Ir,utils:Sc,STANDARD_PLAYLIST_SELECTOR:function(){var e=this.useDevicePixelRatio&&K.devicePixelRatio||1;return function(e,t,i,n,r){var s=e.playlists.map((function(e){var t,i;return t=e.attributes.RESOLUTION&&e.attributes.RESOLUTION.width,i=e.attributes.RESOLUTION&&e.attributes.RESOLUTION.height,{bandwidth:e.attributes.BANDWIDTH||K.Number.MAX_VALUE,width:t,height:i,playlist:e}}));Eh(s,(function(e,t){return e.bandwidth-t.bandwidth}));var a=(s=s.filter((function(e){return!cc.isIncompatible(e.playlist)}))).filter((function(e){return cc.isEnabled(e.playlist)}));a.length||(a=s.filter((function(e){return!cc.isDisabled(e.playlist)})));var o=a.filter((function(e){return e.bandwidth*gh.BANDWIDTH_VARIANCEi||e.height>n}))).filter((function(e){return e.width===f[0].width&&e.height===f[0].height})),u=m[m.length-1],g=m.filter((function(e){return e.bandwidth===u.bandwidth}))[0]);var v=g||p||l||a[0]||s[0];return v?v.playlist:null}(this.playlists.master,this.systemBandwidth,parseInt(wh(this.tech_.el(),"width"),10)*e,parseInt(wh(this.tech_.el(),"height"),10)*e,this.limitRenditionByPlayerDimensions)},INITIAL_PLAYLIST_SELECTOR:function(){var e=this.playlists.master.playlists.filter(cc.isEnabled);return Eh(e,(function(e,t){return xh(e,t)})),e.filter((function(e){return Gc(e.attributes.CODECS).videoCodec}))[0]||null},comparePlaylistBandwidth:xh,comparePlaylistResolution:function(e,t){var i=void 0,n=void 0;return e.attributes.RESOLUTION&&e.attributes.RESOLUTION.width&&(i=e.attributes.RESOLUTION.width),i=i||K.Number.MAX_VALUE,t.attributes.RESOLUTION&&t.attributes.RESOLUTION.width&&(n=t.attributes.RESOLUTION.width),i===(n=n||K.Number.MAX_VALUE)&&e.attributes.BANDWIDTH&&t.attributes.BANDWIDTH?e.attributes.BANDWIDTH-t.attributes.BANDWIDTH:i-n},xhr:pc()};["GOAL_BUFFER_LENGTH","MAX_GOAL_BUFFER_LENGTH","GOAL_BUFFER_LENGTH_RATE","BUFFER_LOW_WATER_LINE","MAX_BUFFER_LOW_WATER_LINE","BUFFER_LOW_WATER_LINE_RATE","BANDWIDTH_VARIANCE"].forEach((function(e){Object.defineProperty(id,e,{get:function(){return Il.log.warn("using Hls."+e+" is UNSAFE be sure you know what you are doing"),gh[e]},set:function(t){Il.log.warn("using Hls."+e+" is UNSAFE be sure you know what you are doing"),"number"!=typeof t||t<0?Il.log.warn("value of Hls."+e+" must be greater than or equal to 0"):gh[e]=t}})}));var nd=function(e){if(/^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i.test(e))return"hls";return/^application\/dash\+xml/i.test(e)?"dash":null},rd=function(e,t){for(var i=t.media(),n=-1,r=0;r0?1/this.throughput:0,Math.floor(1/(e+t))},set:function(){Il.log.error('The "systemBandwidth" property is read-only')}}}),this.options_.bandwidth&&(this.bandwidth=this.options_.bandwidth),this.options_.throughput&&(this.throughput=this.options_.throughput),Object.defineProperties(this.stats,{bandwidth:{get:function(){return i.bandwidth||0},enumerable:!0},mediaRequests:{get:function(){return i.masterPlaylistController_.mediaRequests_()||0},enumerable:!0},mediaRequestsAborted:{get:function(){return i.masterPlaylistController_.mediaRequestsAborted_()||0},enumerable:!0},mediaRequestsTimedout:{get:function(){return i.masterPlaylistController_.mediaRequestsTimedout_()||0},enumerable:!0},mediaRequestsErrored:{get:function(){return i.masterPlaylistController_.mediaRequestsErrored_()||0},enumerable:!0},mediaTransferDuration:{get:function(){return i.masterPlaylistController_.mediaTransferDuration_()||0},enumerable:!0},mediaBytesTransferred:{get:function(){return i.masterPlaylistController_.mediaBytesTransferred_()||0},enumerable:!0},mediaSecondsLoaded:{get:function(){return i.masterPlaylistController_.mediaSecondsLoaded_()||0},enumerable:!0},buffered:{get:function(){return Ic(i.tech_.buffered())},enumerable:!0},currentTime:{get:function(){return i.tech_.currentTime()},enumerable:!0},currentSource:{get:function(){return i.tech_.currentSource_},enumerable:!0},currentTech:{get:function(){return i.tech_.name_},enumerable:!0},duration:{get:function(){return i.tech_.duration()},enumerable:!0},master:{get:function(){return i.playlists.master},enumerable:!0},playerDimensions:{get:function(){return i.tech_.currentDimensions()},enumerable:!0},seekable:{get:function(){return Ic(i.tech_.seekable())},enumerable:!0},timestamp:{get:function(){return Date.now()},enumerable:!0},videoPlaybackQuality:{get:function(){return i.tech_.getVideoPlaybackQuality()},enumerable:!0}}),this.tech_.one("canplay",this.masterPlaylistController_.setupFirstPlay.bind(this.masterPlaylistController_)),this.tech_.on("bandwidthupdate",(function(){i.options_.useBandwidthFromLocalStorage&&function(e){if(!window.localStorage)return!1;var t=ad();t=t?Il.mergeOptions(t,e):e;try{window.localStorage.setItem("videojs-vhs",JSON.stringify(t))}catch(e){return!1}}({bandwidth:i.bandwidth,throughput:Math.round(i.throughput)})})),this.masterPlaylistController_.on("selectedinitialmedia",(function(){var e,t;t=(e=i).playlists,e.representations=function(){return t&&t.master&&t.master.playlists?t.master.playlists.filter((function(e){return!ac(e)})).map((function(t,i){return new Qh(e,t,t.id)})):[]},sd(i)})),this.on(this.masterPlaylistController_,"progress",(function(){this.tech_.trigger("progress")})),this.on(this.masterPlaylistController_,"firstplay",(function(){this.ignoreNextSeekingEvent_=!0})),this.setupQualityLevels_(),this.tech_.el()&&this.tech_.src(Il.URL.createObjectURL(this.masterPlaylistController_.mediaSource)))}},{key:"setupQualityLevels_",value:function(){var e=this,t=Il.players[this.tech_.options_.playerId];t&&t.qualityLevels&&!this.qualityLevels_&&(this.qualityLevels_=t.qualityLevels(),this.masterPlaylistController_.on("selectedinitialmedia",(function(){var t,i;t=e.qualityLevels_,(i=e).representations().forEach((function(e){t.addQualityLevel(e)})),rd(t,i.playlists)})),this.playlists.on("mediachange",(function(){rd(e.qualityLevels_,e.playlists)})))}},{key:"play",value:function(){this.masterPlaylistController_.play()}},{key:"setCurrentTime",value:function(e){this.masterPlaylistController_.setCurrentTime(e)}},{key:"duration",value:function(){return this.masterPlaylistController_.duration()}},{key:"seekable",value:function(){return this.masterPlaylistController_.seekable()}},{key:"dispose",value:function(){this.playbackWatcher_&&this.playbackWatcher_.dispose(),this.masterPlaylistController_&&this.masterPlaylistController_.dispose(),this.qualityLevels_&&this.qualityLevels_.dispose(),this.player_&&(delete this.player_.vhs,delete this.player_.dash,delete this.player_.hls),this.tech_&&this.tech_.hls&&delete this.tech_.hls,function e(t,i,n){null===t&&(t=Function.prototype);var r=Object.getOwnPropertyDescriptor(t,i);if(void 0===r){var s=Object.getPrototypeOf(t);return null===s?void 0:e(s,i,n)}if("value"in r)return r.value;var a=r.get;return void 0!==a?a.call(n):void 0}(t.prototype.__proto__||Object.getPrototypeOf(t.prototype),"dispose",this).call(this)}},{key:"convertToProgramTime",value:function(e,t){return kc({playlist:this.masterPlaylistController_.media(),time:e,callback:t})}},{key:"seekToProgramTime",value:function(e,t){var i=!(arguments.length>2&&void 0!==arguments[2])||arguments[2],n=arguments.length>3&&void 0!==arguments[3]?arguments[3]:2;return Cc({programTime:e,playlist:this.masterPlaylistController_.media(),retryCount:n,pauseAfterSeek:i,seekTo:this.options_.seekTo,tech:this.options_.tech,callback:t})}}]),t}(Il.getComponent("Component")),ud={name:"videojs-http-streaming",VERSION:"1.13.2",canHandleSource:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},i=Il.mergeOptions(Il.options,t);return ud.canPlayType(e.type,i)},handleSource:function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},n=Il.mergeOptions(Il.options,i);return t.hls=new od(e,t,n),t.hls.xhr=pc(),t.hls.src(e.src,e.type),t.hls},canPlayType:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},i=Il.mergeOptions(Il.options,t),n=i.hls.overrideNative,r=nd(e),s=r&&(!id.supportsTypeNatively(r)||n);return s?"maybe":""}};function ld(t){let 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Use cue.value.key instead."),e.value.key}},value:{get:function(){return Il.log.warn("cue.frame.value is deprecated. Use cue.value.data instead."),e.value.data}},privateData:{get:function(){return Il.log.warn("cue.frame.privateData is deprecated. Use cue.value.data instead."),e.value.data}}})}(i),this.metadataTrack_.addCue(i)}),this)}),e),e.metadataTrack_&&e.metadataTrack_.cues&&e.metadataTrack_.cues.length){for(var s=e.metadataTrack_.cues,a=[],o=0;o-1)},this.trigger=function(t){var i,n,r,s;if(i=e[t])if(2===arguments.length)for(r=i.length,n=0;n>>1,e.samplingfrequencyindex<<7|e.channelcount<<3,6,1,2]))},g=function(e){return t(k.hdlr,I[e])},m=function(e){var i=new Uint8Array([0,0,0,0,0,0,0,2,0,0,0,3,0,1,95,144,e.duration>>>24&255,e.duration>>>16&255,e.duration>>>8&255,255&e.duration,85,196,0,0]);return e.samplerate&&(i[12]=e.samplerate>>>24&255,i[13]=e.samplerate>>>16&255,i[14]=e.samplerate>>>8&255,i[15]=255&e.samplerate),t(k.mdhd,i)},f=function(e){return t(k.mdia,m(e),g(e.type),o(e))},a=function(e){return t(k.mfhd,new Uint8Array([0,0,0,0,(4278190080&e)>>24,(16711680&e)>>16,(65280&e)>>8,255&e]))},o=function(e){return t(k.minf,"video"===e.type?t(k.vmhd,P):t(k.smhd,L),n(),y(e))},u=function(e,i){for(var n=[],r=i.length;r--;)n[r]=b(i[r]);return t.apply(null,[k.moof,a(e)].concat(n))},l=function(e){for(var i=e.length,n=[];i--;)n[i]=d(e[i]);return t.apply(null,[k.moov,h(4294967295)].concat(n).concat(c(e)))},c=function(e){for(var i=e.length,n=[];i--;)n[i]=T(e[i]);return t.apply(null,[k.mvex].concat(n))},h=function(e){var i=new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,2,0,1,95,144,(4278190080&e)>>24,(16711680&e)>>16,(65280&e)>>8,255&e,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255]);return t(k.mvhd,i)},v=function(e){var i,n,r=e.samples||[],s=new Uint8Array(4+r.length);for(n=0;n>>8),a.push(255&r[i].byteLength),a=a.concat(Array.prototype.slice.call(r[i]));for(i=0;i>>8),o.push(255&s[i].byteLength),o=o.concat(Array.prototype.slice.call(s[i]));if(n=[k.avc1,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,(65280&e.width)>>8,255&e.width,(65280&e.height)>>8,255&e.height,0,72,0,0,0,72,0,0,0,0,0,0,0,1,19,118,105,100,101,111,106,115,45,99,111,110,116,114,105,98,45,104,108,115,0,0,0,0,0,0,0,0,0,0,0,0,0,24,17,17]),t(k.avcC,new Uint8Array([1,e.profileIdc,e.profileCompatibility,e.levelIdc,255].concat([r.length],a,[s.length],o))),t(k.btrt,new Uint8Array([0,28,156,128,0,45,198,192,0,45,198,192]))],e.sarRatio){var u=e.sarRatio[0],l=e.sarRatio[1];n.push(t(k.pasp,new Uint8Array([(4278190080&u)>>24,(16711680&u)>>16,(65280&u)>>8,255&u,(4278190080&l)>>24,(16711680&l)>>16,(65280&l)>>8,255&l])))}return t.apply(null,n)},B=function(e){return t(k.mp4a,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,(65280&e.channelcount)>>8,255&e.channelcount,(65280&e.samplesize)>>8,255&e.samplesize,0,0,0,0,(65280&e.samplerate)>>8,255&e.samplerate,0,0]),r(e))},p=function(e){var i=new Uint8Array([0,0,0,7,0,0,0,0,0,0,0,0,(4278190080&e.id)>>24,(16711680&e.id)>>16,(65280&e.id)>>8,255&e.id,0,0,0,0,(4278190080&e.duration)>>24,(16711680&e.duration)>>16,(65280&e.duration)>>8,255&e.duration,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,(65280&e.width)>>8,255&e.width,0,0,(65280&e.height)>>8,255&e.height,0,0]);return t(k.tkhd,i)},b=function(e){var i,n,r,s,a,o;return i=t(k.tfhd,new Uint8Array([0,0,0,58,(4278190080&e.id)>>24,(16711680&e.id)>>16,(65280&e.id)>>8,255&e.id,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0])),a=Math.floor(e.baseMediaDecodeTime/(q+1)),o=Math.floor(e.baseMediaDecodeTime%(q+1)),n=t(k.tfdt,new Uint8Array([1,0,0,0,a>>>24&255,a>>>16&255,a>>>8&255,255&a,o>>>24&255,o>>>16&255,o>>>8&255,255&o])),92,"audio"===e.type?(r=S(e,92),t(k.traf,i,n,r)):(s=v(e),r=S(e,s.length+92),t(k.traf,i,n,r,s))},d=function(e){return e.duration=e.duration||4294967295,t(k.trak,p(e),f(e))},T=function(e){var i=new Uint8Array([0,0,0,0,(4278190080&e.id)>>24,(16711680&e.id)>>16,(65280&e.id)>>8,255&e.id,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,1]);return"video"!==e.type&&(i[i.length-1]=0),t(k.trex,i)},H=function(e,t){var i=0,n=0,r=0,s=0;return e.length&&(void 0!==e[0].duration&&(i=1),void 0!==e[0].size&&(n=2),void 0!==e[0].flags&&(r=4),void 0!==e[0].compositionTimeOffset&&(s=8)),[0,0,i|n|r|s,1,(4278190080&e.length)>>>24,(16711680&e.length)>>>16,(65280&e.length)>>>8,255&e.length,(4278190080&t)>>>24,(16711680&t)>>>16,(65280&t)>>>8,255&t]},F=function(e,i){var n,r,s,a;for(i+=20+16*(r=e.samples||[]).length,n=H(r,i),a=0;a>>24,(16711680&s.duration)>>>16,(65280&s.duration)>>>8,255&s.duration,(4278190080&s.size)>>>24,(16711680&s.size)>>>16,(65280&s.size)>>>8,255&s.size,s.flags.isLeading<<2|s.flags.dependsOn,s.flags.isDependedOn<<6|s.flags.hasRedundancy<<4|s.flags.paddingValue<<1|s.flags.isNonSyncSample,61440&s.flags.degradationPriority,15&s.flags.degradationPriority,(4278190080&s.compositionTimeOffset)>>>24,(16711680&s.compositionTimeOffset)>>>16,(65280&s.compositionTimeOffset)>>>8,255&s.compositionTimeOffset]);return t(k.trun,new Uint8Array(n))},j=function(e,i){var n,r,s,a;for(i+=20+8*(r=e.samples||[]).length,n=H(r,i),a=0;a>>24,(16711680&s.duration)>>>16,(65280&s.duration)>>>8,255&s.duration,(4278190080&s.size)>>>24,(16711680&s.size)>>>16,(65280&s.size)>>>8,255&s.size]);return t(k.trun,new Uint8Array(n))},S=function(e,t){return"audio"===e.type?j(e,t):F(e,t)};s=function(){return t(k.ftyp,C,w,C,E)};var W,z,G,$,X,K,Y,Q,J=function(e){return t(k.mdat,e)},Z=u,ee=function(e){var t,i=s(),n=l(e);return(t=new Uint8Array(i.byteLength+n.byteLength)).set(i),t.set(n,i.byteLength),t},te=function(e,t){var i={size:0,flags:{isLeading:0,dependsOn:1,isDependedOn:0,hasRedundancy:0,degradationPriority:0,isNonSyncSample:1}};return i.dataOffset=t,i.compositionTimeOffset=e.pts-e.dts,i.duration=e.duration,i.size=4*e.length,i.size+=e.byteLength,e.keyFrame&&(i.flags.dependsOn=2,i.flags.isNonSyncSample=0),i},ie=function(e){var t,i,n=[],r=[];for(r.byteLength=0,r.nalCount=0,r.duration=0,n.byteLength=0,t=0;t1&&(t=e.shift(),e.byteLength-=t.byteLength,e.nalCount-=t.nalCount,e[0][0].dts=t.dts,e[0][0].pts=t.pts,e[0][0].duration+=t.duration),e},se=function(e,t){var i,n,r,s,a,o=t||0,u=[];for(i=0;ide/2))){for((a=he[e.samplerate])||(a=t[0].data),o=0;o=i?e:(t.minSegmentDts=1/0,e.filter((function(e){return e.dts>=i&&(t.minSegmentDts=Math.min(t.minSegmentDts,e.dts),t.minSegmentPts=t.minSegmentDts,!0)})))},ye=function(e){var t,i,n=[];for(t=0;t>>8,r=255&t,t!==this.PADDING_)if(t===this.RESUME_CAPTION_LOADING_)this.mode_="popOn";else if(t===this.END_OF_CAPTION_)this.mode_="popOn",this.clearFormatting(e.pts),this.flushDisplayed(e.pts),i=this.displayed_,this.displayed_=this.nonDisplayed_,this.nonDisplayed_=i,this.startPts_=e.pts;else if(t===this.ROLL_UP_2_ROWS_)this.rollUpRows_=2,this.setRollUp(e.pts);else if(t===this.ROLL_UP_3_ROWS_)this.rollUpRows_=3,this.setRollUp(e.pts);else if(t===this.ROLL_UP_4_ROWS_)this.rollUpRows_=4,this.setRollUp(e.pts);else if(t===this.CARRIAGE_RETURN_)this.clearFormatting(e.pts),this.flushDisplayed(e.pts),this.shiftRowsUp_(),this.startPts_=e.pts;else if(t===this.BACKSPACE_)"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1);else if(t===this.ERASE_DISPLAYED_MEMORY_)this.flushDisplayed(e.pts),this.displayed_=Oe();else if(t===this.ERASE_NON_DISPLAYED_MEMORY_)this.nonDisplayed_=Oe();else if(t===this.RESUME_DIRECT_CAPTIONING_)"paintOn"!==this.mode_&&(this.flushDisplayed(e.pts),this.displayed_=Oe()),this.mode_="paintOn",this.startPts_=e.pts;else if(this.isSpecialCharacter(n,r))s=Pe((n=(3&n)<<8)|r),this[this.mode_](e.pts,s),this.column_++;else if(this.isExtCharacter(n,r))"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1),s=Pe((n=(3&n)<<8)|r),this[this.mode_](e.pts,s),this.column_++;else if(this.isMidRowCode(n,r))this.clearFormatting(e.pts),this[this.mode_](e.pts," "),this.column_++,14==(14&r)&&this.addFormatting(e.pts,["i"]),1==(1&r)&&this.addFormatting(e.pts,["u"]);else if(this.isOffsetControlCode(n,r))this.column_+=3&r;else if(this.isPAC(n,r)){var a=Le.indexOf(7968&t);"rollUp"===this.mode_&&(a-this.rollUpRows_+1<0&&(a=this.rollUpRows_-1),this.setRollUp(e.pts,a)),a!==this.row_&&(this.clearFormatting(e.pts),this.row_=a),1&r&&-1===this.formatting_.indexOf("u")&&this.addFormatting(e.pts,["u"]),16==(16&t)&&(this.column_=4*((14&t)>>1)),this.isColorPAC(r)&&14==(14&r)&&this.addFormatting(e.pts,["i"])}else this.isNormalChar(n)&&(0===r&&(r=null),s=Pe(n),s+=Pe(r),this[this.mode_](e.pts,s),this.column_+=s.length)}else this.lastControlCode_=null}};De.prototype=new V,De.prototype.flushDisplayed=function(e){var t=this.displayed_.map((function(e){try{return e.trim()}catch(e){return console.error("Skipping malformed caption."),""}})).join("\n").replace(/^\n+|\n+$/g,"");t.length&&this.trigger("data",{startPts:this.startPts_,endPts:e,text:t,stream:this.name_})},De.prototype.reset=function(){this.mode_="popOn",this.topRow_=0,this.startPts_=0,this.displayed_=Oe(),this.nonDisplayed_=Oe(),this.lastControlCode_=null,this.column_=0,this.row_=14,this.rollUpRows_=2,this.formatting_=[]},De.prototype.setConstants=function(){0===this.dataChannel_?(this.BASE_=16,this.EXT_=17,this.CONTROL_=(20|this.field_)<<8,this.OFFSET_=23):1===this.dataChannel_&&(this.BASE_=24,this.EXT_=25,this.CONTROL_=(28|this.field_)<<8,this.OFFSET_=31),this.PADDING_=0,this.RESUME_CAPTION_LOADING_=32|this.CONTROL_,this.END_OF_CAPTION_=47|this.CONTROL_,this.ROLL_UP_2_ROWS_=37|this.CONTROL_,this.ROLL_UP_3_ROWS_=38|this.CONTROL_,this.ROLL_UP_4_ROWS_=39|this.CONTROL_,this.CARRIAGE_RETURN_=45|this.CONTROL_,this.RESUME_DIRECT_CAPTIONING_=41|this.CONTROL_,this.BACKSPACE_=33|this.CONTROL_,this.ERASE_DISPLAYED_MEMORY_=44|this.CONTROL_,this.ERASE_NON_DISPLAYED_MEMORY_=46|this.CONTROL_},De.prototype.isSpecialCharacter=function(e,t){return e===this.EXT_&&t>=48&&t<=63},De.prototype.isExtCharacter=function(e,t){return(e===this.EXT_+1||e===this.EXT_+2)&&t>=32&&t<=63},De.prototype.isMidRowCode=function(e,t){return e===this.EXT_&&t>=32&&t<=47},De.prototype.isOffsetControlCode=function(e,t){return e===this.OFFSET_&&t>=33&&t<=35},De.prototype.isPAC=function(e,t){return e>=this.BASE_&&e=64&&t<=127},De.prototype.isColorPAC=function(e){return e>=64&&e<=79||e>=96&&e<=127},De.prototype.isNormalChar=function(e){return e>=32&&e<=127},De.prototype.setRollUp=function(e,t){if("rollUp"!==this.mode_&&(this.row_=14,this.mode_="rollUp",this.flushDisplayed(e),this.nonDisplayed_=Oe(),this.displayed_=Oe()),void 0!==t&&t!==this.row_)for(var i=0;i"}),"");this[this.mode_](e,i)},De.prototype.clearFormatting=function(e){if(this.formatting_.length){var t=this.formatting_.reverse().reduce((function(e,t){return e+""}),"");this.formatting_=[],this[this.mode_](e,t)}},De.prototype.popOn=function(e,t){var i=this.nonDisplayed_[this.row_];i+=t,this.nonDisplayed_[this.row_]=i},De.prototype.rollUp=function(e,t){var i=this.displayed_[this.row_];i+=t,this.displayed_[this.row_]=i},De.prototype.shiftRowsUp_=function(){var e;for(e=0;et&&(i=-1);Math.abs(t-e)>4294967296;)e+=8589934592*i;return e},Me=function e(t){var i,n;e.prototype.init.call(this),this.type_=t||"shared",this.push=function(e){"shared"!==this.type_&&e.type!==this.type_||(void 0===n&&(n=e.dts),e.dts=Ue(e.dts,n),e.pts=Ue(e.pts,n),i=e.dts,this.trigger("data",e))},this.flush=function(){n=i,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.discontinuity=function(){n=void 0,i=void 0},this.reset=function(){this.discontinuity(),this.trigger("reset")}};Me.prototype=new V;var Be,je=Me,Fe=function(e,t,i){var n,r="";for(n=t;n>>2;h*=4,h+=3&c[7],u.timeStamp=h,void 0===t.pts&&void 0===t.dts&&(t.pts=u.timeStamp,t.dts=u.timeStamp),this.trigger("timestamp",u)}t.frames.push(u),a+=10,a+=o}while(a>>4>1&&(n+=t[n]+1),0===i.pid)i.type="pat",e(t.subarray(n),i),this.trigger("data",i);else if(i.pid===this.pmtPid)for(i.type="pmt",e(t.subarray(n),i),this.trigger("data",i);this.packetsWaitingForPmt.length;)this.processPes_.apply(this,this.packetsWaitingForPmt.shift());else void 0===this.programMapTable?this.packetsWaitingForPmt.push([t,n,i]):this.processPes_(t,n,i)},this.processPes_=function(e,t,i){i.pid===this.programMapTable.video?i.streamType=Re.H264_STREAM_TYPE:i.pid===this.programMapTable.audio?i.streamType=Re.ADTS_STREAM_TYPE:i.streamType=this.programMapTable["timed-metadata"][i.pid],i.type="pes",i.data=e.subarray(t),this.trigger("data",i)}}).prototype=new V,ze.STREAM_TYPES={h264:27,adts:15},(Ge=function(){var e,t=this,i={data:[],size:0},n={data:[],size:0},r={data:[],size:0},s=function(e,i,n){var r,s,a=new Uint8Array(e.size),o={type:i},u=0,l=0;if(e.data.length&&!(e.size<9)){for(o.trackId=e.data[0].pid,u=0;u>>3,h.pts*=4,h.pts+=(6&c[13])>>>1,h.dts=h.pts,64&d&&(h.dts=(14&c[14])<<27|(255&c[15])<<20|(254&c[16])<<12|(255&c[17])<<5|(254&c[18])>>>3,h.dts*=4,h.dts+=(6&c[18])>>>1)),h.data=c.subarray(9+c[8]),r="video"===i||o.packetLength<=e.size,(n||r)&&(e.size=0,e.data.length=0),r&&t.trigger("data",o)}};Ge.prototype.init.call(this),this.push=function(a){({pat:function(){},pes:function(){var e,t;switch(a.streamType){case Re.H264_STREAM_TYPE:case Re.H264_STREAM_TYPE:e=i,t="video";break;case Re.ADTS_STREAM_TYPE:e=n,t="audio";break;case Re.METADATA_STREAM_TYPE:e=r,t="timed-metadata";break;default:return}a.payloadUnitStartIndicator&&s(e,t,!0),e.data.push(a),e.size+=a.data.byteLength},pmt:function(){var i={type:"metadata",tracks:[]};null!==(e=a.programMapTable).video&&i.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+e.video,codec:"avc",type:"video"}),null!==e.audio&&i.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+e.audio,codec:"adts",type:"audio"}),t.trigger("data",i)}})[a.type]()},this.reset=function(){i.size=0,i.data.length=0,n.size=0,n.data.length=0,this.trigger("reset")},this.flushStreams_=function(){s(i,"video"),s(n,"audio"),s(r,"timed-metadata")},this.flush=function(){this.flushStreams_(),this.trigger("done")}}).prototype=new V;var Ke={PAT_PID:0,MP2T_PACKET_LENGTH:188,TransportPacketStream:We,TransportParseStream:ze,ElementaryStream:Ge,TimestampRolloverStream:Xe,CaptionStream:Ne.CaptionStream,Cea608Stream:Ne.Cea608Stream,MetadataStream:$e};for(var Ye in Re)Re.hasOwnProperty(Ye)&&(Ke[Ye]=Re[Ye]);var Qe,Je=Ke,Ze=de,et=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350];(Qe=function(e){var t,i=0;Qe.prototype.init.call(this),this.push=function(n){var r,s,a,o,u,l,c=0;if(e||(i=0),"audio"===n.type)for(t?(o=t,(t=new Uint8Array(o.byteLength+n.data.byteLength)).set(o),t.set(n.data,o.byteLength)):t=n.data;c+5>5,l=(u=1024*(1+(3&t[c+6])))*Ze/et[(60&t[c+2])>>>2],a=c+r,t.byteLength>>6&3),channelcount:(1&t[c+2])<<2|(192&t[c+3])>>>6,samplerate:et[(60&t[c+2])>>>2],samplingfrequencyindex:(60&t[c+2])>>>2,samplesize:16,data:t.subarray(c+7+s,a)}),i++,t.byteLength===a)return void(t=void 0);t=t.subarray(a)}else c++},this.flush=function(){i=0,this.trigger("done")},this.reset=function(){t=void 0,this.trigger("reset")},this.endTimeline=function(){t=void 0,this.trigger("endedtimeline")}}).prototype=new V;var tt,it,nt,rt=Qe,st=function(e){var t=e.byteLength,i=0,n=0;this.length=function(){return 8*t},this.bitsAvailable=function(){return 8*t+n},this.loadWord=function(){var r=e.byteLength-t,s=new Uint8Array(4),a=Math.min(4,t);if(0===a)throw new Error("no bytes available");s.set(e.subarray(r,r+a)),i=new DataView(s.buffer).getUint32(0),n=8*a,t-=a},this.skipBits=function(e){var r;n>e?(i<<=e,n-=e):(e-=n,e-=8*(r=Math.floor(e/8)),t-=r,this.loadWord(),i<<=e,n-=e)},this.readBits=function(e){var r=Math.min(n,e),s=i>>>32-r;return(n-=r)>0?i<<=r:t>0&&this.loadWord(),(r=e-r)>0?s<>>e))return i<<=e,n-=e,e;return this.loadWord(),e+this.skipLeadingZeros()},this.skipUnsignedExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.skipExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.readUnsignedExpGolomb=function(){var e=this.skipLeadingZeros();return this.readBits(e+1)-1},this.readExpGolomb=function(){var e=this.readUnsignedExpGolomb();return 1&e?1+e>>>1:-1*(e>>>1)},this.readBoolean=function(){return 1===this.readBits(1)},this.readUnsignedByte=function(){return this.readBits(8)},this.loadWord()};(it=function(){var e,t,i=0;it.prototype.init.call(this),this.push=function(n){var r;t?((r=new Uint8Array(t.byteLength+n.data.byteLength)).set(t),r.set(n.data,t.byteLength),t=r):t=n.data;for(var s=t.byteLength;i3&&this.trigger("data",t.subarray(i+3)),t=null,i=0,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")}}).prototype=new V,nt={100:!0,110:!0,122:!0,244:!0,44:!0,83:!0,86:!0,118:!0,128:!0,138:!0,139:!0,134:!0},(tt=function(){var e,t,i,n,r,s,a,o=new it;tt.prototype.init.call(this),e=this,this.push=function(e){"video"===e.type&&(t=e.trackId,i=e.pts,n=e.dts,o.push(e))},o.on("data",(function(a){var o={trackId:t,pts:i,dts:n,data:a};switch(31&a[0]){case 5:o.nalUnitType="slice_layer_without_partitioning_rbsp_idr";break;case 6:o.nalUnitType="sei_rbsp",o.escapedRBSP=r(a.subarray(1));break;case 7:o.nalUnitType="seq_parameter_set_rbsp",o.escapedRBSP=r(a.subarray(1)),o.config=s(o.escapedRBSP);break;case 8:o.nalUnitType="pic_parameter_set_rbsp";break;case 9:o.nalUnitType="access_unit_delimiter_rbsp"}e.trigger("data",o)})),o.on("done",(function(){e.trigger("done")})),o.on("partialdone",(function(){e.trigger("partialdone")})),o.on("reset",(function(){e.trigger("reset")})),o.on("endedtimeline",(function(){e.trigger("endedtimeline")})),this.flush=function(){o.flush()},this.partialFlush=function(){o.partialFlush()},this.reset=function(){o.reset()},this.endTimeline=function(){o.endTimeline()},a=function(e,t){var i,n=8,r=8;for(i=0;i>4?i+20:i+10},ct=function(e,t){var i=(224&e[t+5])>>5,n=e[t+4]<<3;return 6144&e[t+3]|n|i};(at=function(){var e=new Uint8Array,t=0;at.prototype.init.call(this),this.setTimestamp=function(e){t=e},this.push=function(i){var n,r,s,a,o=0,u=0;for(e.length?(a=e.length,(e=new Uint8Array(i.byteLength+a)).set(e.subarray(0,a)),e.set(i,a)):e=i;e.length-u>=3;)if(e[u]!=="I".charCodeAt(0)||e[u+1]!=="D".charCodeAt(0)||e[u+2]!=="3".charCodeAt(0))if(255!=(255&e[u])||240!=(240&e[u+1]))u++;else{if(e.length-u<7)break;if(u+(o=ct(e,u))>e.length)break;s={type:"audio",data:e.subarray(u,u+o),pts:t,dts:t},this.trigger("data",s),u+=o}else{if(e.length-u<10)break;if(u+(o=lt(e,u))>e.length)break;r={type:"timed-metadata",data:e.subarray(u,u+o)},this.trigger("data",r),u+=o}n=e.length-u,e=n>0?e.subarray(u):new Uint8Array},this.reset=function(){e=new Uint8Array,this.trigger("reset")},this.endTimeline=function(){e=new Uint8Array,this.trigger("endedtimeline")}}).prototype=new V;var ht,dt,pt,ft,mt=at,gt=ot.H264Stream,vt=ut,yt=de,_t=["audioobjecttype","channelcount","samplerate","samplingfrequencyindex","samplesize"],bt=["width","height","profileIdc","levelIdc","profileCompatibility","sarRatio"],Tt=function(e,t){var i;if(e.length!==t.length)return!1;for(i=0;i=-1e4&&i<=45e3&&(!n||o>i)&&(n=s,o=i));return n?n.gop:null},this.alignGopsAtStart_=function(e){var t,i,n,r,s,o,u,l;for(s=e.byteLength,o=e.nalCount,u=e.duration,t=i=0;tn.pts?t++:(i++,s-=r.byteLength,o-=r.nalCount,u-=r.duration);return 0===i?e:i===e.length?null:((l=e.slice(i)).byteLength=s,l.duration=u,l.nalCount=o,l.pts=l[0].pts,l.dts=l[0].dts,l)},this.alignGopsAtEnd_=function(e){var t,i,n,r,s,o,u;for(t=a.length-1,i=e.length-1,s=null,o=!1;t>=0&&i>=0;){if(n=a[t],r=e[i],n.pts===r.pts){o=!0;break}n.pts>r.pts?t--:(t===a.length-1&&(s=i),i--)}if(!o&&null===s)return null;if(0===(u=o?i:s))return e;var l=e.slice(u),c=l.reduce((function(e,t){return e.byteLength+=t.byteLength,e.duration+=t.duration,e.nalCount+=t.nalCount,e}),{byteLength:0,duration:0,nalCount:0});return l.byteLength=c.byteLength,l.duration=c.duration,l.nalCount=c.nalCount,l.pts=l[0].pts,l.dts=l[0].dts,l},this.alignGopsWith=function(e){a=e}}).prototype=new V,(ft=function(e,t){this.numberOfTracks=0,this.metadataStream=t,void 0!==(e=e||{}).remux?this.remuxTracks=!!e.remux:this.remuxTracks=!0,"boolean"==typeof e.keepOriginalTimestamps?this.keepOriginalTimestamps=e.keepOriginalTimestamps:this.keepOriginalTimestamps=!1,this.pendingTracks=[],this.videoTrack=null,this.pendingBoxes=[],this.pendingCaptions=[],this.pendingMetadata=[],this.pendingBytes=0,this.emittedTracks=0,ft.prototype.init.call(this),this.push=function(e){return e.text?this.pendingCaptions.push(e):e.frames?this.pendingMetadata.push(e):(this.pendingTracks.push(e.track),this.pendingBytes+=e.boxes.byteLength,"video"===e.track.type&&(this.videoTrack=e.track,this.pendingBoxes.push(e.boxes)),void("audio"===e.track.type&&(this.audioTrack=e.track,this.pendingBoxes.unshift(e.boxes))))}}).prototype=new V,ft.prototype.flush=function(e){var t,i,n,r,s=0,a={captions:[],captionStreams:{},metadata:[],info:{}},o=0;if(this.pendingTracks.length=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0))}if(this.videoTrack?(o=this.videoTrack.timelineStartInfo.pts,bt.forEach((function(e){a.info[e]=this.videoTrack[e]}),this)):this.audioTrack&&(o=this.audioTrack.timelineStartInfo.pts,_t.forEach((function(e){a.info[e]=this.audioTrack[e]}),this)),this.videoTrack||this.audioTrack){for(1===this.pendingTracks.length?a.type=this.pendingTracks[0].type:a.type="combined",this.emittedTracks+=this.pendingTracks.length,n=ee(this.pendingTracks),a.initSegment=new Uint8Array(n.byteLength),a.initSegment.set(n),a.data=new Uint8Array(this.pendingBytes),r=0;r=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0)},ft.prototype.setRemux=function(e){this.remuxTracks=e},(pt=function(e){var t,i,n=this,r=!0;pt.prototype.init.call(this),e=e||{},this.baseMediaDecodeTime=e.baseMediaDecodeTime||0,this.transmuxPipeline_={},this.setupAacPipeline=function(){var r={};this.transmuxPipeline_=r,r.type="aac",r.metadataStream=new Je.MetadataStream,r.aacStream=new mt,r.audioTimestampRolloverStream=new Je.TimestampRolloverStream("audio"),r.timedMetadataTimestampRolloverStream=new Je.TimestampRolloverStream("timed-metadata"),r.adtsStream=new rt,r.coalesceStream=new ft(e,r.metadataStream),r.headOfPipeline=r.aacStream,r.aacStream.pipe(r.audioTimestampRolloverStream).pipe(r.adtsStream),r.aacStream.pipe(r.timedMetadataTimestampRolloverStream).pipe(r.metadataStream).pipe(r.coalesceStream),r.metadataStream.on("timestamp",(function(e){r.aacStream.setTimestamp(e.timeStamp)})),r.aacStream.on("data",(function(s){"timed-metadata"!==s.type||r.audioSegmentStream||(i=i||{timelineStartInfo:{baseMediaDecodeTime:n.baseMediaDecodeTime},codec:"adts",type:"audio"},r.coalesceStream.numberOfTracks++,r.audioSegmentStream=new dt(i,e),r.audioSegmentStream.on("timingInfo",n.trigger.bind(n,"audioTimingInfo")),r.adtsStream.pipe(r.audioSegmentStream).pipe(r.coalesceStream)),n.trigger("trackinfo",{hasAudio:!!i,hasVideo:!!t})})),r.coalesceStream.on("data",this.trigger.bind(this,"data")),r.coalesceStream.on("done",this.trigger.bind(this,"done"))},this.setupTsPipeline=function(){var r={};this.transmuxPipeline_=r,r.type="ts",r.metadataStream=new Je.MetadataStream,r.packetStream=new Je.TransportPacketStream,r.parseStream=new Je.TransportParseStream,r.elementaryStream=new Je.ElementaryStream,r.timestampRolloverStream=new Je.TimestampRolloverStream,r.adtsStream=new rt,r.h264Stream=new gt,r.captionStream=new Je.CaptionStream,r.coalesceStream=new ft(e,r.metadataStream),r.headOfPipeline=r.packetStream,r.packetStream.pipe(r.parseStream).pipe(r.elementaryStream).pipe(r.timestampRolloverStream),r.timestampRolloverStream.pipe(r.h264Stream),r.timestampRolloverStream.pipe(r.adtsStream),r.timestampRolloverStream.pipe(r.metadataStream).pipe(r.coalesceStream),r.h264Stream.pipe(r.captionStream).pipe(r.coalesceStream),r.elementaryStream.on("data",(function(s){var a;if("metadata"===s.type){for(a=s.tracks.length;a--;)t||"video"!==s.tracks[a].type?i||"audio"!==s.tracks[a].type||((i=s.tracks[a]).timelineStartInfo.baseMediaDecodeTime=n.baseMediaDecodeTime):(t=s.tracks[a]).timelineStartInfo.baseMediaDecodeTime=n.baseMediaDecodeTime;t&&!r.videoSegmentStream&&(r.coalesceStream.numberOfTracks++,r.videoSegmentStream=new ht(t,e),r.videoSegmentStream.on("timelineStartInfo",(function(e){i&&(i.timelineStartInfo=e,r.audioSegmentStream.setEarliestDts(e.dts))})),r.videoSegmentStream.on("processedGopsInfo",n.trigger.bind(n,"gopInfo")),r.videoSegmentStream.on("segmentTimingInfo",n.trigger.bind(n,"videoSegmentTimingInfo")),r.videoSegmentStream.on("baseMediaDecodeTime",(function(e){i&&r.audioSegmentStream.setVideoBaseMediaDecodeTime(e)})),r.videoSegmentStream.on("timingInfo",n.trigger.bind(n,"videoTimingInfo")),r.h264Stream.pipe(r.videoSegmentStream).pipe(r.coalesceStream)),i&&!r.audioSegmentStream&&(r.coalesceStream.numberOfTracks++,r.audioSegmentStream=new dt(i,e),r.audioSegmentStream.on("timingInfo",n.trigger.bind(n,"audioTimingInfo")),r.adtsStream.pipe(r.audioSegmentStream).pipe(r.coalesceStream)),n.trigger("trackinfo",{hasAudio:!!i,hasVideo:!!t})}})),r.coalesceStream.on("data",this.trigger.bind(this,"data")),r.coalesceStream.on("id3Frame",(function(e){e.dispatchType=r.metadataStream.dispatchType,n.trigger("id3Frame",e)})),r.coalesceStream.on("caption",this.trigger.bind(this,"caption")),r.coalesceStream.on("done",this.trigger.bind(this,"done"))},this.setBaseMediaDecodeTime=function(n){var r=this.transmuxPipeline_;e.keepOriginalTimestamps||(this.baseMediaDecodeTime=n),i&&(i.timelineStartInfo.dts=void 0,i.timelineStartInfo.pts=void 0,Te(i),e.keepOriginalTimestamps||(i.timelineStartInfo.baseMediaDecodeTime=n),r.audioTimestampRolloverStream&&r.audioTimestampRolloverStream.discontinuity()),t&&(r.videoSegmentStream&&(r.videoSegmentStream.gopCache_=[]),t.timelineStartInfo.dts=void 0,t.timelineStartInfo.pts=void 0,Te(t),r.captionStream.reset(),e.keepOriginalTimestamps||(t.timelineStartInfo.baseMediaDecodeTime=n)),r.timestampRolloverStream&&r.timestampRolloverStream.discontinuity()},this.setAudioAppendStart=function(e){i&&this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(e)},this.setRemux=function(t){var i=this.transmuxPipeline_;e.remux=t,i&&i.coalesceStream&&i.coalesceStream.setRemux(t)},this.alignGopsWith=function(e){t&&this.transmuxPipeline_.videoSegmentStream&&this.transmuxPipeline_.videoSegmentStream.alignGopsWith(e)},this.push=function(e){if(r){var t=vt(e);t&&"aac"!==this.transmuxPipeline_.type?this.setupAacPipeline():t||"ts"===this.transmuxPipeline_.type||this.setupTsPipeline(),r=!1}this.transmuxPipeline_.headOfPipeline.push(e)},this.flush=function(){r=!0,this.transmuxPipeline_.headOfPipeline.flush()},this.endTimeline=function(){this.transmuxPipeline_.headOfPipeline.endTimeline()},this.reset=function(){this.transmuxPipeline_.headOfPipeline&&this.transmuxPipeline_.headOfPipeline.reset()},this.resetCaptions=function(){this.transmuxPipeline_.captionStream&&this.transmuxPipeline_.captionStream.reset()}}).prototype=new V;var kt={Transmuxer:pt,VideoSegmentStream:ht,AudioSegmentStream:dt,AUDIO_PROPERTIES:_t,VIDEO_PROPERTIES:bt,generateVideoSegmentTimingInfo:St},Ct=function(){function e(e,t){for(var i=0;i0&&void 0!==arguments[0]?arguments[0]:"",t={codecCount:0},i=void 0;return t.codecCount=e.split(",").length,t.codecCount=t.codecCount||2,(i=/(^|\s|,)+(avc[13])([^ ,]*)/i.exec(e))&&(t.videoCodec=i[2],t.videoObjectTypeIndicator=i[3]),t.audioProfile=/(^|\s|,)+mp4a.[0-9A-Fa-f]+\.([0-9A-Fa-f]+)/i.exec(e),t.audioProfile=t.audioProfile&&t.audioProfile[2],t},$c=function(e,t,i){return e+"/"+t+'; codecs="'+i.filter((function(e){return!!e})).join(", ")+'"'},Xc=function(e,t){var i=function(e){return e.segments&&e.segments.length&&e.segments[0].map?"mp4":"mp2t"}(t),n=function(e){var t=e.attributes||{};return t.CODECS?Gc(t.CODECS):Wc}(t),r=t.attributes||{},s=!0,a=!1;if(!t)return[];if(e.mediaGroups.AUDIO&&r.AUDIO){var o=e.mediaGroups.AUDIO[r.AUDIO];if(o)for(var u in a=!0,s=!1,o)if(!o[u].uri&&!o[u].playlists){s=!0;break}}a&&!n.audioProfile&&(s||(n.audioProfile=function(e,t){if(!e.mediaGroups.AUDIO||!t)return null;var i=e.mediaGroups.AUDIO[t];if(!i)return null;for(var n in i){var r=i[n];if(r.default&&r.playlists)return Gc(r.playlists[0].attributes.CODECS).audioProfile}return null}(e,r.AUDIO)),n.audioProfile||(Il.log.warn("Multiple audio tracks present but no audio codec string is specified. Attempting to use the default audio codec (mp4a.40.2)"),n.audioProfile=Wc.audioProfile));var l={};n.videoCodec&&(l.video=""+n.videoCodec+n.videoObjectTypeIndicator),n.audioProfile&&(l.audio="mp4a.40."+n.audioProfile);var c=$c("audio",i,[l.audio]),h=$c("video",i,[l.video]),d=$c("video",i,[l.video,l.audio]);return a?!s&&l.video?[h,c]:s||l.video?[d,c]:[c,c]:l.video?[d]:[c]},Kc=function(e){var t={type:"",parameters:{}},i=e.trim().split(";");return t.type=i.shift().trim(),i.forEach((function(e){var i=e.trim().split("=");if(i.length>1){var n=i[0].replace(/"/g,"").trim(),r=i[1].replace(/"/g,"").trim();t.parameters[n]=r}})),t},Yc=function(e){return/mp4a\.\d+.\d+/i.test(e)},Qc=function(e){return/avc1\.[\da-f]+/i.test(e)},Jc=function(e,t,i){if(null==t||!e.length)return[];var n=Math.ceil(9e4*(t-i+3)),r=void 0;for(r=0;rn);r++);return e.slice(r)},Zc=function(e){function t(e,i){Nl(this,t);var n=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this,Il.EventTarget));n.timestampOffset_=0,n.pendingBuffers_=[],n.bufferUpdating_=!1,n.mediaSource_=e,n.codecs_=i,n.audioCodec_=null,n.videoCodec_=null,n.audioDisabled_=!1,n.appendAudioInitSegment_=!0,n.gopBuffer_=[],n.timeMapping_=0,n.safeAppend_=Il.browser.IE_VERSION>=11;var r={remux:!1,alignGopsAtEnd:n.safeAppend_};return n.codecs_.forEach((function(e){Yc(e)?n.audioCodec_=e:Qc(e)&&(n.videoCodec_=e)})),n.transmuxer_=new qc,n.transmuxer_.postMessage({action:"init",options:r}),n.transmuxer_.onmessage=function(e){return"data"===e.data.action?n.data_(e):"done"===e.data.action?n.done_(e):"gopInfo"===e.data.action?n.appendGopInfo_(e):"videoSegmentTimingInfo"===e.data.action?n.videoSegmentTimingInfo_(e.data.videoSegmentTimingInfo):void 0},Object.defineProperty(n,"timestampOffset",{get:function(){return this.timestampOffset_},set:function(e){"number"==typeof e&&e>=0&&(this.timestampOffset_=e,this.appendAudioInitSegment_=!0,this.gopBuffer_.length=0,this.timeMapping_=0,this.transmuxer_.postMessage({action:"setTimestampOffset",timestampOffset:e}))}}),Object.defineProperty(n,"appendWindowStart",{get:function(){return(this.videoBuffer_||this.audioBuffer_).appendWindowStart},set:function(e){this.videoBuffer_&&(this.videoBuffer_.appendWindowStart=e),this.audioBuffer_&&(this.audioBuffer_.appendWindowStart=e)}}),Object.defineProperty(n,"updating",{get:function(){return!!(this.bufferUpdating_||!this.audioDisabled_&&this.audioBuffer_&&this.audioBuffer_.updating||this.videoBuffer_&&this.videoBuffer_.updating)}}),Object.defineProperty(n,"buffered",{get:function(){return function(e,t,i){var n=null,r=null,s=0,a=[],o=[];if(!e&&!t)return Il.createTimeRange();if(!e)return t.buffered;if(!t)return e.buffered;if(i)return e.buffered;if(0===e.buffered.length&&0===t.buffered.length)return Il.createTimeRange();for(var u=e.buffered,l=t.buffered,c=u.length;c--;)a.push({time:u.start(c),type:"start"}),a.push({time:u.end(c),type:"end"});for(c=l.length;c--;)a.push({time:l.start(c),type:"start"}),a.push({time:l.end(c),type:"end"});for(a.sort((function(e,t){return e.time-t.time})),c=0;c=n);r++);return e.slice(0,r).concat(t)}(this.gopBuffer_,e.data.gopInfo,this.safeAppend_)}},{key:"remove",value:function(e,t){if(this.videoBuffer_&&(this.videoBuffer_.updating=!0,this.videoBuffer_.remove(e,t),this.gopBuffer_=function(e,t,i,n){for(var r=Math.ceil(9e4*(t-n)),s=Math.ceil(9e4*(i-n)),a=e.slice(),o=e.length;o--&&!(e[o].pts<=s););if(-1===o)return a;for(var u=o+1;u--&&!(e[u].pts<=r););return u=Math.max(u,0),a.splice(u,o-u+1),a}(this.gopBuffer_,e,t,this.timeMapping_)),!this.audioDisabled_&&this.audioBuffer_&&(this.audioBuffer_.updating=!0,this.audioBuffer_.remove(e,t)),Pc(e,t,this.metadataTrack_),this.inbandTextTracks_)for(var i in this.inbandTextTracks_)Pc(e,t,this.inbandTextTracks_[i])}},{key:"processPendingSegments_",value:function(){var e={video:{segments:[],bytes:0},audio:{segments:[],bytes:0},captions:[],metadata:[]};if(!this.pendingBuffers_.length)return this.trigger("updateend"),void(this.bufferUpdating_=!1);e=this.pendingBuffers_.reduce((function(e,t){var i=t.type,n=t.data,r=t.initSegment;return e[i].segments.push(n),e[i].bytes+=n.byteLength,e[i].initSegment=r,t.captions&&(e.captions=e.captions.concat(t.captions)),t.info&&(e[i].info=t.info),t.metadata&&(e.metadata=e.metadata.concat(t.metadata)),e}),e),this.videoBuffer_||this.audioBuffer_||(0===e.video.bytes&&(this.videoCodec_=null),0===e.audio.bytes&&(this.audioCodec_=null),this.createRealSourceBuffers_()),e.audio.info&&this.mediaSource_.trigger({type:"audioinfo",info:e.audio.info}),e.video.info&&this.mediaSource_.trigger({type:"videoinfo",info:e.video.info}),this.appendAudioInitSegment_&&(!this.audioDisabled_&&this.audioBuffer_&&(e.audio.segments.unshift(e.audio.initSegment),e.audio.bytes+=e.audio.initSegment.byteLength),this.appendAudioInitSegment_=!1);var t=!1;this.videoBuffer_&&e.video.bytes?(e.video.segments.unshift(e.video.initSegment),e.video.bytes+=e.video.initSegment.byteLength,this.concatAndAppendSegments_(e.video,this.videoBuffer_)):!this.videoBuffer_||!this.audioDisabled_&&this.audioBuffer_||(t=!0),Oc(this,e.captions,e.metadata),!this.audioDisabled_&&this.audioBuffer_&&this.concatAndAppendSegments_(e.audio,this.audioBuffer_),this.pendingBuffers_.length=0,t&&this.trigger("updateend"),this.bufferUpdating_=!1}},{key:"concatAndAppendSegments_",value:function(e,t){var i=0,n=void 0;if(e.bytes){n=new Uint8Array(e.bytes),e.segments.forEach((function(e){n.set(e,i),i+=e.byteLength}));try{t.updating=!0,t.appendBuffer(n)}catch(e){this.mediaSource_.player_&&this.mediaSource_.player_.error({code:-3,type:"APPEND_BUFFER_ERR",message:e.message,originalError:e})}}}},{key:"abort",value:function(){this.videoBuffer_&&this.videoBuffer_.abort(),!this.audioDisabled_&&this.audioBuffer_&&this.audioBuffer_.abort(),this.transmuxer_&&this.transmuxer_.postMessage({action:"reset"}),this.pendingBuffers_.length=0,this.bufferUpdating_=!1}},{key:"dispose",value:function(){this.transmuxer_&&this.transmuxer_.terminate(),this.trigger("dispose"),this.off()}}]),t}(Il.EventTarget),eh=function(e){function t(){Nl(this,t);var e=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this)),i=void 0;for(i in e.nativeMediaSource_=new K.MediaSource,e.nativeMediaSource_)i in t.prototype||"function"!=typeof e.nativeMediaSource_[i]||(e[i]=e.nativeMediaSource_[i].bind(e.nativeMediaSource_));return e.duration_=NaN,Object.defineProperty(e,"duration",{get:function(){return this.duration_===1/0?this.duration_:this.nativeMediaSource_.duration},set:function(e){this.duration_=e,e===1/0||(this.nativeMediaSource_.duration=e)}}),Object.defineProperty(e,"seekable",{get:function(){return this.duration_===1/0?Il.createTimeRanges([[0,this.nativeMediaSource_.duration]]):this.nativeMediaSource_.seekable}}),Object.defineProperty(e,"readyState",{get:function(){return this.nativeMediaSource_.readyState}}),Object.defineProperty(e,"activeSourceBuffers",{get:function(){return this.activeSourceBuffers_}}),e.sourceBuffers=[],e.activeSourceBuffers_=[],e.updateActiveSourceBuffers_=function(){if(e.activeSourceBuffers_.length=0,1===e.sourceBuffers.length){var t=e.sourceBuffers[0];return t.appendAudioInitSegment_=!0,t.audioDisabled_=!t.audioCodec_,void e.activeSourceBuffers_.push(t)}for(var i=!1,n=!0,r=0;rthis.nativeMediaSource_.duration||isNaN(this.nativeMediaSource_.duration))&&(this.nativeMediaSource_.duration=t)}},{key:"addSourceBuffer",value:function(e){var t=void 0,i=Kc(e);if(/^(video|audio)\/mp2t$/i.test(i.type)){var n=[];i.parameters&&i.parameters.codecs&&(n=i.parameters.codecs.split(","),n=(n=zc(n)).filter((function(e){return Yc(e)||Qc(e)}))),0===n.length&&(n=["avc1.4d400d","mp4a.40.2"]),t=new Zc(this,n),0!==this.sourceBuffers.length&&(this.sourceBuffers[0].createRealSourceBuffers_(),t.createRealSourceBuffers_(),this.sourceBuffers[0].audioDisabled_=!0)}else t=this.nativeMediaSource_.addSourceBuffer(e);return this.sourceBuffers.push(t),t}},{key:"dispose",value:function(){this.trigger("dispose"),this.off(),this.sourceBuffers.forEach((function(e){e.dispose&&e.dispose()})),this.sourceBuffers.length=0}}]),t}(Il.EventTarget),th=0;Il.mediaSources={};var ih=function(e,t){var i=Il.mediaSources[e];if(!i)throw new Error("Media Source not found (Video.js)");i.trigger({type:"sourceopen",swfId:t})},nh=function(){return!!K.MediaSource&&!!K.MediaSource.isTypeSupported&&K.MediaSource.isTypeSupported('video/mp4;codecs="avc1.4d400d,mp4a.40.2"')},rh=function(){if(this.MediaSource={open:ih,supportsNativeMediaSources:nh},nh())return new eh;throw new Error("Cannot use create a virtual MediaSource for this video")};rh.open=ih,rh.supportsNativeMediaSources=nh;var sh={createObjectURL:function(e){var t=void 0;return e instanceof eh?(t=K.URL.createObjectURL(e.nativeMediaSource_),e.url_=t,t):e instanceof eh?(t="blob:vjs-media-source/"+th,th++,Il.mediaSources[t]=e,t):(t=K.URL.createObjectURL(e),e.url_=t,t)}};Il.MediaSource=rh,Il.URL=sh;var ah=Il.EventTarget,oh=Il.mergeOptions,uh=function(e,t){for(var i=void 0,n=oh(e,{duration:t.duration,minimumUpdatePeriod:t.minimumUpdatePeriod}),r=0;r2&&void 0!==arguments[2]?arguments[2]:{},r=arguments[3];Nl(this,t);var s=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this)),a=n.withCredentials,o=void 0!==a&&a,u=n.handleManifestRedirects,l=void 0!==u&&u;if(s.hls_=i,s.withCredentials=o,s.handleManifestRedirects=l,!e)throw new Error("A non-empty playlist URL or playlist is required");return s.on("minimumUpdatePeriod",(function(){s.refreshXml_()})),s.on("mediaupdatetimeout",(function(){s.refreshMedia_(s.media().id)})),s.state="HAVE_NOTHING",s.loadedPlaylists_={},"string"==typeof e?(s.srcUrl=e,s.sidxMapping_={},Ml(s)):(s.setupChildLoader(r,e),s)}return Ul(t,e),Rl(t,[{key:"setupChildLoader",value:function(e,t){this.masterPlaylistLoader_=e,this.childPlaylist_=t}},{key:"dispose",value:function(){this.trigger("dispose"),this.stopRequest(),this.loadedPlaylists_={},K.clearTimeout(this.minimumUpdatePeriodTimeout_),K.clearTimeout(this.mediaRequest_),K.clearTimeout(this.mediaUpdateTimeout),this.off()}},{key:"hasPendingRequest",value:function(){return this.request||this.mediaRequest_}},{key:"stopRequest",value:function(){if(this.request){var e=this.request;this.request=null,e.onreadystatechange=null,e.abort()}}},{key:"sidxRequestFinished_",value:function(e,t,i,n){var r=this;return function(s,a){if(r.request){if(r.request=null,s)return r.error={status:a.status,message:"DASH playlist request error at URL: "+e.uri,response:a.response,code:2},i&&(r.state=i),r.trigger("error"),n(t,null);var o=new Uint8Array(a.response),u=In.parseSidx(o.subarray(8));return n(t,u)}}}},{key:"media",value:function(e){var t=this;if(!e)return this.media_;if("HAVE_NOTHING"===this.state)throw new Error("Cannot switch media playlist from "+this.state);var i=this.state;if("string"==typeof e){if(!this.master.playlists[e])throw new Error("Unknown playlist URI: "+e);e=this.master.playlists[e]}var n=!this.media_||e.id!==this.media_.id;if(n&&this.loadedPlaylists_[e.id]&&this.loadedPlaylists_[e.id].endList)return this.state="HAVE_METADATA",this.media_=e,void(n&&(this.trigger("mediachanging"),this.trigger("mediachange")));if(n)if(this.media_&&this.trigger("mediachanging"),e.sidx){var r=void 0,s=void 0;this.masterPlaylistLoader_?(r=this.masterPlaylistLoader_.master,s=this.masterPlaylistLoader_.sidxMapping_):(r=this.master,s=this.sidxMapping_);var a=lh(e.sidx);s[a]={sidxInfo:e.sidx},this.request=hh(e.sidx,e,this.hls_.xhr,{handleManifestRedirects:this.handleManifestRedirects},this.sidxRequestFinished_(e,r,i,(function(n,r){if(!n||!r)throw new Error("failed to request sidx");s[a].sidx=r,t.haveMetadata({startingState:i,playlist:n.playlists[e.id]})})))}else this.mediaRequest_=K.setTimeout(this.haveMetadata.bind(this,{startingState:i,playlist:e}),0)}},{key:"haveMetadata",value:function(e){var t=e.startingState,i=e.playlist;this.state="HAVE_METADATA",this.loadedPlaylists_[i.id]=i,this.mediaRequest_=null,this.refreshMedia_(i.id),"HAVE_MASTER"===t?this.trigger("loadedmetadata"):this.trigger("mediachange")}},{key:"pause",value:function(){this.stopRequest(),K.clearTimeout(this.mediaUpdateTimeout),K.clearTimeout(this.minimumUpdatePeriodTimeout_),"HAVE_NOTHING"===this.state&&(this.started=!1)}},{key:"load",value:function(e){var t=this;K.clearTimeout(this.mediaUpdateTimeout),K.clearTimeout(this.minimumUpdatePeriodTimeout_);var i=this.media();if(e){var n=i?i.targetDuration/2*1e3:5e3;this.mediaUpdateTimeout=K.setTimeout((function(){return t.load()}),n)}else this.started?i&&!i.endList?this.trigger("mediaupdatetimeout"):this.trigger("loadedplaylist"):this.start()}},{key:"parseMasterXml",value:function(){var e=yn(this.masterXml_,{manifestUri:this.srcUrl,clientOffset:this.clientOffset_,sidxMapping:this.sidxMapping_});e.uri=this.srcUrl;for(var t=0;t"):function(){}};function fh(){}var mh=function(){function e(t,i,n,r){Nl(this,e),this.callbacks_=[],this.pendingCallback_=null,this.timestampOffset_=0,this.mediaSource=t,this.processedAppend_=!1,this.type_=n,this.mimeType_=i,this.logger_=ph("SourceUpdater["+n+"]["+i+"]"),"closed"===t.readyState?t.addEventListener("sourceopen",this.createSourceBuffer_.bind(this,i,r)):this.createSourceBuffer_(i,r)}return Rl(e,[{key:"createSourceBuffer_",value:function(e,t){var i=this;this.sourceBuffer_=this.mediaSource.addSourceBuffer(e),this.logger_("created SourceBuffer"),t&&(t.trigger("sourcebufferadded"),this.mediaSource.sourceBuffers.length<2)?t.on("sourcebufferadded",(function(){i.start_()})):this.start_()}},{key:"start_",value:function(){var e=this;this.started_=!0,this.onUpdateendCallback_=function(){var t=e.pendingCallback_;e.pendingCallback_=null,e.sourceBuffer_.removing=!1,e.logger_("buffered ["+Ac(e.buffered())+"]"),t&&t(),e.runCallback_()},this.sourceBuffer_.addEventListener("updateend",this.onUpdateendCallback_),this.runCallback_()}},{key:"abort",value:function(e){var t=this;this.processedAppend_&&this.queueCallback_((function(){t.sourceBuffer_.abort()}),e)}},{key:"appendBuffer",value:function(e,t){var i=this;this.processedAppend_=!0,this.queueCallback_((function(){e.videoSegmentTimingInfoCallback&&i.sourceBuffer_.addEventListener("videoSegmentTimingInfo",e.videoSegmentTimingInfoCallback),i.sourceBuffer_.appendBuffer(e.bytes)}),(function(){e.videoSegmentTimingInfoCallback&&i.sourceBuffer_.removeEventListener("videoSegmentTimingInfo",e.videoSegmentTimingInfoCallback),t()}))}},{key:"buffered",value:function(){return this.sourceBuffer_?this.sourceBuffer_.buffered:Il.createTimeRanges()}},{key:"remove",value:function(e,t){var i=this,n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:fh;this.processedAppend_&&this.queueCallback_((function(){i.logger_("remove ["+e+" => "+t+"]"),i.sourceBuffer_.removing=!0,i.sourceBuffer_.remove(e,t)}),n)}},{key:"updating",value:function(){return!this.sourceBuffer_||this.sourceBuffer_.updating||!!this.pendingCallback_&&this.pendingCallback_!==fh}},{key:"timestampOffset",value:function(e){var t=this;return void 0!==e&&(this.queueCallback_((function(){t.sourceBuffer_.timestampOffset=e,t.runCallback_()})),this.timestampOffset_=e),this.timestampOffset_}},{key:"queueCallback_",value:function(e,t){this.callbacks_.push([e.bind(this),t]),this.runCallback_()}},{key:"runCallback_",value:function(){var e=void 0;!this.updating()&&this.callbacks_.length&&this.started_&&(e=this.callbacks_.shift(),this.pendingCallback_=e[1],e[0]())}},{key:"dispose",value:function(){var e=this,t=function t(){e.sourceBuffer_&&"open"===e.mediaSource.readyState&&e.sourceBuffer_.abort(),e.sourceBuffer_.removeEventListener("updateend",t)};this.sourceBuffer_.removeEventListener("updateend",this.onUpdateendCallback_),this.sourceBuffer_.removing?this.sourceBuffer_.addEventListener("updateend",t):t()}}]),e}(),gh={GOAL_BUFFER_LENGTH:30,MAX_GOAL_BUFFER_LENGTH:60,GOAL_BUFFER_LENGTH_RATE:1,INITIAL_BANDWIDTH:4194304,BANDWIDTH_VARIANCE:1.2,BUFFER_LOW_WATER_LINE:0,MAX_BUFFER_LOW_WATER_LINE:30,BUFFER_LOW_WATER_LINE_RATE:1},vh=2,yh=-101,_h=-102,bh=function(e){e.forEach((function(e){e.abort()}))},Th=function(e,t){return t.timedout?{status:t.status,message:"HLS request timed-out at URL: "+t.uri,code:yh,xhr:t}:t.aborted?{status:t.status,message:"HLS request aborted at URL: "+t.uri,code:_h,xhr:t}:e?{status:t.status,message:"HLS request errored at URL: "+t.uri,code:vh,xhr:t}:null},Sh=function(e,t,i){var n=0,r=!1;return function(s,a){if(!r)return s?(r=!0,bh(e),i(s,a)):(n+=1)===e.length?(a.endOfAllRequests=Date.now(),a.encryptedBytes?function(e,t,i){e.addEventListener("message",(function n(r){if(r.data.source===t.requestId){e.removeEventListener("message",n);var s=r.data.decrypted;return t.bytes=new Uint8Array(s.bytes,s.byteOffset,s.byteLength),i(null,t)}}));var n=void 0;n=t.key.bytes.slice?t.key.bytes.slice():new Uint32Array(Array.prototype.slice.call(t.key.bytes)),e.postMessage(yc({source:t.requestId,encrypted:t.encryptedBytes,key:n,iv:t.key.iv}),[t.encryptedBytes.buffer,n.buffer])}(t,a,i):i(null,a)):void 0}},kh=function(e,t){return function(i){var n,r,s;return e.stats=Il.mergeOptions(e.stats,(r=(n=i).target,(s={bandwidth:1/0,bytesReceived:0,roundTripTime:Date.now()-r.requestTime||0}).bytesReceived=n.loaded,s.bandwidth=Math.floor(s.bytesReceived/s.roundTripTime*8*1e3),s)),!e.stats.firstBytesReceivedAt&&e.stats.bytesReceived&&(e.stats.firstBytesReceivedAt=Date.now()),t(i,e)}},Ch=function(e,t,i,n,r,s,a){var o=[],u=Sh(o,i,a);if(r.key&&!r.key.bytes){var l=e(Il.mergeOptions(t,{uri:r.key.resolvedUri,responseType:"arraybuffer"}),function(e,t){return function(i,n){var r=n.response,s=Th(i,n);if(s)return t(s,e);if(16!==r.byteLength)return t({status:n.status,message:"Invalid HLS key at URL: "+n.uri,code:vh,xhr:n},e);var a=new DataView(r);return e.key.bytes=new Uint32Array([a.getUint32(0),a.getUint32(4),a.getUint32(8),a.getUint32(12)]),t(null,e)}}(r,u));o.push(l)}if(r.map&&!r.map.bytes){var c=e(Il.mergeOptions(t,{uri:r.map.resolvedUri,responseType:"arraybuffer",headers:fc(r.map)}),function(e,t,i){return function(n,r){var s=r.response,a=Th(n,r);return a?i(a,e):0===s.byteLength?i({status:r.status,message:"Empty HLS segment content at URL: "+r.uri,code:vh,xhr:r},e):(e.map.bytes=new Uint8Array(r.response),t&&!t.isInitialized()&&t.init(),e.map.timescales=On.timescale(e.map.bytes),e.map.videoTrackIds=On.videoTrackIds(e.map.bytes),i(null,e))}}(r,n,u));o.push(c)}var h=e(Il.mergeOptions(t,{uri:r.resolvedUri,responseType:"arraybuffer",headers:fc(r)}),function(e,t,i){return function(n,r){var s=r.response,a=Th(n,r),o=void 0;return a?i(a,e):0===s.byteLength?i({status:r.status,message:"Empty HLS segment content at URL: "+r.uri,code:vh,xhr:r},e):(e.stats=function(e){return{bandwidth:e.bandwidth,bytesReceived:e.bytesReceived||0,roundTripTime:e.roundTripTime||0}}(r),e.key?e.encryptedBytes=new Uint8Array(r.response):e.bytes=new Uint8Array(r.response),t&&e.map&&e.map.bytes&&(t.isInitialized()||t.init(),(o=t.parse(e.bytes,e.map.videoTrackIds,e.map.timescales))&&o.captions&&(e.captionStreams=o.captionStreams,e.fmp4Captions=o.captions)),i(null,e))}}(r,n,u));return h.addEventListener("progress",kh(r,s)),o.push(h),function(){return bh(o)}},wh=function(e,t){var i;return e&&(i=K.getComputedStyle(e))?i[t]:""},Eh=function(e,t){var i=e.slice();e.sort((function(e,n){var r=t(e,n);return 0===r?i.indexOf(e)-i.indexOf(n):r}))},xh=function(e,t){var i=void 0,n=void 0;return e.attributes.BANDWIDTH&&(i=e.attributes.BANDWIDTH),i=i||K.Number.MAX_VALUE,t.attributes.BANDWIDTH&&(n=t.attributes.BANDWIDTH),i-(n=n||K.Number.MAX_VALUE)},Ah=function(e,t,i){if(!e||!t)return!1;var n=i===e.segments.length;return e.endList&&"open"===t.readyState&&n},Ih=function(e){return"number"==typeof e&&isFinite(e)},Ph=function(e){function t(e){Nl(this,t);var i=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this));if(!e)throw new TypeError("Initialization settings are required");if("function"!=typeof e.currentTime)throw new TypeError("No currentTime getter specified");if(!e.mediaSource)throw new TypeError("No MediaSource specified");return i.bandwidth=e.bandwidth,i.throughput={rate:0,count:0},i.roundTrip=NaN,i.resetStats_(),i.mediaIndex=null,i.hasPlayed_=e.hasPlayed,i.currentTime_=e.currentTime,i.seekable_=e.seekable,i.seeking_=e.seeking,i.duration_=e.duration,i.mediaSource_=e.mediaSource,i.hls_=e.hls,i.loaderType_=e.loaderType,i.startingMedia_=void 0,i.segmentMetadataTrack_=e.segmentMetadataTrack,i.goalBufferLength_=e.goalBufferLength,i.sourceType_=e.sourceType,i.inbandTextTracks_=e.inbandTextTracks,i.state_="INIT",i.checkBufferTimeout_=null,i.error_=void 0,i.currentTimeline_=-1,i.pendingSegment_=null,i.mimeType_=null,i.sourceUpdater_=null,i.xhrOptions_=null,i.activeInitSegmentId_=null,i.initSegments_={},i.cacheEncryptionKeys_=e.cacheEncryptionKeys,i.keyCache_={},"main"===i.loaderType_?i.captionParser_=new Yn:i.captionParser_=null,i.decrypter_=e.decrypter,i.syncController_=e.syncController,i.syncPoint_={segmentIndex:0,time:0},i.triggerSyncInfoUpdate_=function(){return i.trigger("syncinfoupdate")},i.syncController_.on("syncinfoupdate",i.triggerSyncInfoUpdate_),i.mediaSource_.addEventListener("sourceopen",(function(){return i.ended_=!1})),i.fetchAtBuffer_=!1,i.logger_=ph("SegmentLoader["+i.loaderType_+"]"),Object.defineProperty(i,"state",{get:function(){return this.state_},set:function(e){e!==this.state_&&(this.logger_(this.state_+" -> "+e),this.state_=e)}}),i}return Ul(t,e),Rl(t,[{key:"resetStats_",value:function(){this.mediaBytesTransferred=0,this.mediaRequests=0,this.mediaRequestsAborted=0,this.mediaRequestsTimedout=0,this.mediaRequestsErrored=0,this.mediaTransferDuration=0,this.mediaSecondsLoaded=0}},{key:"dispose",value:function(){this.trigger("dispose"),this.state="DISPOSED",this.pause(),this.abort_(),this.sourceUpdater_&&this.sourceUpdater_.dispose(),this.resetStats_(),this.captionParser_&&this.captionParser_.reset(),this.checkBufferTimeout_&&K.clearTimeout(this.checkBufferTimeout_),this.syncController_&&this.triggerSyncInfoUpdate_&&this.syncController_.off("syncinfoupdate",this.triggerSyncInfoUpdate_),this.off()}},{key:"abort",value:function(){"WAITING"===this.state?(this.abort_(),this.state="READY",this.paused()||this.monitorBuffer_()):this.pendingSegment_&&(this.pendingSegment_=null)}},{key:"abort_",value:function(){this.pendingSegment_&&this.pendingSegment_.abortRequests(),this.pendingSegment_=null}},{key:"error",value:function(e){return void 0!==e&&(this.error_=e),this.pendingSegment_=null,this.error_}},{key:"endOfStream",value:function(){this.ended_=!0,this.pause(),this.trigger("ended")}},{key:"buffered_",value:function(){return this.sourceUpdater_?this.sourceUpdater_.buffered():Il.createTimeRanges()}},{key:"initSegment",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!e)return null;var i=_c(e),n=this.initSegments_[i];return t&&!n&&e.bytes&&(this.initSegments_[i]=n={resolvedUri:e.resolvedUri,byterange:e.byterange,bytes:e.bytes,timescales:e.timescales,videoTrackIds:e.videoTrackIds}),n||e}},{key:"segmentKey",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!e)return null;var i=bc(e),n=this.keyCache_[i];this.cacheEncryptionKeys_&&t&&!n&&e.bytes&&(this.keyCache_[i]=n={resolvedUri:e.resolvedUri,bytes:e.bytes});var r={resolvedUri:(n||e).resolvedUri};return n&&(r.bytes=n.bytes),r}},{key:"couldBeginLoading_",value:function(){return this.playlist_&&(this.sourceUpdater_||this.mimeType_&&"INIT"===this.state)&&!this.paused()}},{key:"load",value:function(){if(this.monitorBuffer_(),this.playlist_){if(this.syncController_.setDateTimeMapping(this.playlist_),"INIT"===this.state&&this.couldBeginLoading_())return this.init_();!this.couldBeginLoading_()||"READY"!==this.state&&"INIT"!==this.state||(this.state="READY")}}},{key:"init_",value:function(){return this.state="READY",this.sourceUpdater_=new mh(this.mediaSource_,this.mimeType_,this.loaderType_,this.sourceBufferEmitter_),this.resetEverything(),this.monitorBuffer_()}},{key:"playlist",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(e){var i=this.playlist_,n=this.pendingSegment_;this.playlist_=e,this.xhrOptions_=t,"INIT"===this.state&&(e.syncInfo={mediaSequence:e.mediaSequence,time:0});var r=null;if(i&&(i.id?r=i.id:i.uri&&(r=i.uri)),this.logger_("playlist update ["+r+" => "+(e.id||e.uri)+"]"),this.trigger("syncinfoupdate"),"INIT"===this.state&&this.couldBeginLoading_())return this.init_();if(i&&i.uri===e.uri){var s=e.mediaSequence-i.mediaSequence;this.logger_("live window shift ["+s+"]"),null!==this.mediaIndex&&(this.mediaIndex-=s),n&&(n.mediaIndex-=s,n.mediaIndex>=0&&(n.segment=e.segments[n.mediaIndex])),this.syncController_.saveExpiredSegmentInfo(i,e)}else null!==this.mediaIndex&&this.resyncLoader()}}},{key:"pause",value:function(){this.checkBufferTimeout_&&(K.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=null)}},{key:"paused",value:function(){return null===this.checkBufferTimeout_}},{key:"mimeType",value:function(e,t){this.mimeType_||(this.mimeType_=e,this.sourceBufferEmitter_=t,"INIT"===this.state&&this.couldBeginLoading_()&&this.init_())}},{key:"resetEverything",value:function(e){this.ended_=!1,this.resetLoader(),this.remove(0,1/0,e),this.captionParser_&&this.captionParser_.clearAllCaptions(),this.trigger("reseteverything")}},{key:"resetLoader",value:function(){this.fetchAtBuffer_=!1,this.resyncLoader()}},{key:"resyncLoader",value:function(){this.mediaIndex=null,this.syncPoint_=null,this.abort()}},{key:"remove",value:function(e,t,i){if(t===1/0&&(t=this.duration_()),this.sourceUpdater_&&this.sourceUpdater_.remove(e,t,i),Pc(e,t,this.segmentMetadataTrack_),this.inbandTextTracks_)for(var n in this.inbandTextTracks_)Pc(e,t,this.inbandTextTracks_[n])}},{key:"monitorBuffer_",value:function(){this.checkBufferTimeout_&&K.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=K.setTimeout(this.monitorBufferTick_.bind(this),1)}},{key:"monitorBufferTick_",value:function(){"READY"===this.state&&this.fillBuffer_(),this.checkBufferTimeout_&&K.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=K.setTimeout(this.monitorBufferTick_.bind(this),500)}},{key:"fillBuffer_",value:function(){if(!this.sourceUpdater_.updating()){this.syncPoint_||(this.syncPoint_=this.syncController_.getSyncPoint(this.playlist_,this.duration_(),this.currentTimeline_,this.currentTime_()));var e=this.checkBuffer_(this.buffered_(),this.playlist_,this.mediaIndex,this.hasPlayed_(),this.currentTime_(),this.syncPoint_);e&&(this.isEndOfStream_(e.mediaIndex)?this.endOfStream():(e.mediaIndex!==this.playlist_.segments.length-1||"ended"!==this.mediaSource_.readyState||this.seeking_())&&(e.timeline!==this.currentTimeline_&&(this.syncController_.reset(),e.timestampOffset=e.startOfSegment,this.captionParser_&&this.captionParser_.clearAllCaptions()),this.loadSegment_(e)))}}},{key:"isEndOfStream_",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.playlist_;return Ah(t,this.mediaSource_,e)&&!this.sourceUpdater_.updating()}},{key:"checkBuffer_",value:function(e,t,i,n,r,s){var a=0,o=void 0;e.length&&(a=e.end(e.length-1));var u=Math.max(0,a-r);if(!t.segments.length)return null;if(u>=this.goalBufferLength_())return null;if(!n&&u>=1)return null;if(null===s)return i=this.getSyncSegmentCandidate_(t),this.generateSegmentInfo_(t,i,null,!0);if(null!==i){t.segments[i];return o=a,this.generateSegmentInfo_(t,i+1,o,!1)}if(this.fetchAtBuffer_){var l=cc.getMediaInfoForTime(t,a,s.segmentIndex,s.time);i=l.mediaIndex,o=l.startTime}else{var c=cc.getMediaInfoForTime(t,r,s.segmentIndex,s.time);i=c.mediaIndex,o=c.startTime}return this.generateSegmentInfo_(t,i,o,!1)}},{key:"getSyncSegmentCandidate_",value:function(e){var t=this;if(-1===this.currentTimeline_)return 0;var i=e.segments.map((function(e,t){return{timeline:e.timeline,segmentIndex:t}})).filter((function(e){return e.timeline===t.currentTimeline_}));return i.length?i[Math.min(i.length-1,1)].segmentIndex:Math.max(e.segments.length-1,0)}},{key:"generateSegmentInfo_",value:function(e,t,i,n){if(t<0||t>=e.segments.length)return null;var r=e.segments[t];return{requestId:"segment-loader-"+Math.random(),uri:r.resolvedUri,mediaIndex:t,isSyncRequest:n,startOfSegment:i,playlist:e,bytes:null,encryptedBytes:null,timestampOffset:null,timeline:r.timeline,duration:r.duration,segment:r}}},{key:"abortRequestEarly_",value:function(e){if(this.hls_.tech_.paused()||!this.xhrOptions_.timeout||!this.playlist_.attributes.BANDWIDTH)return!1;if(Date.now()-(e.firstBytesReceivedAt||Date.now())<1e3)return!1;var t=this.currentTime_(),i=e.bandwidth,n=this.pendingSegment_.duration,r=cc.estimateSegmentRequestTime(n,i,this.playlist_,e.bytesReceived),s=function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:1,n=e.length?e.end(e.length-1):0;return(n-t)/i}(this.buffered_(),t,this.hls_.tech_.playbackRate())-1;if(r<=s)return!1;var a=function(e){var t=e.master,i=e.currentTime,n=e.bandwidth,r=e.duration,s=e.segmentDuration,a=e.timeUntilRebuffer,o=e.currentTimeline,u=e.syncController,l=t.playlists.filter((function(e){return!cc.isIncompatible(e)})),c=l.filter(cc.isEnabled);c.length||(c=l.filter((function(e){return!cc.isDisabled(e)})));var h=c.filter(cc.hasAttribute.bind(null,"BANDWIDTH")).map((function(e){var t=u.getSyncPoint(e,r,o,i)?1:2;return{playlist:e,rebufferingImpact:cc.estimateSegmentRequestTime(s,n,e)*t-a}})),d=h.filter((function(e){return e.rebufferingImpact<=0}));return Eh(d,(function(e,t){return xh(t.playlist,e.playlist)})),d.length?d[0]:(Eh(h,(function(e,t){return e.rebufferingImpact-t.rebufferingImpact})),h[0]||null)}({master:this.hls_.playlists.master,currentTime:t,bandwidth:i,duration:this.duration_(),segmentDuration:n,timeUntilRebuffer:s,currentTimeline:this.currentTimeline_,syncController:this.syncController_});if(a){var o=r-s-a.rebufferingImpact,u=.5;return s<=1/30&&(u=1),!a.playlist||a.playlist.uri===this.playlist_.uri||o0&&this.remove(0,t)}},{key:"createSimplifiedSegmentObj_",value:function(e){var t=e.segment,i={resolvedUri:t.resolvedUri,byterange:t.byterange,requestId:e.requestId};if(t.key){var n=t.key.iv||new Uint32Array([0,0,0,e.mediaIndex+e.playlist.mediaSequence]);i.key=this.segmentKey(t.key),i.key.iv=n}return t.map&&(i.map=this.initSegment(t.map)),i}},{key:"segmentRequestFinished_",value:function(e,t){if(this.mediaRequests+=1,t.stats&&(this.mediaBytesTransferred+=t.stats.bytesReceived,this.mediaTransferDuration+=t.stats.roundTripTime),this.pendingSegment_){if(t.requestId===this.pendingSegment_.requestId){if(e)return this.pendingSegment_=null,this.state="READY",e.code===_h?void(this.mediaRequestsAborted+=1):(this.pause(),e.code===yh?(this.mediaRequestsTimedout+=1,this.bandwidth=1,this.roundTrip=NaN,void this.trigger("bandwidthupdate")):(this.mediaRequestsErrored+=1,this.error(e),void this.trigger("error")));this.bandwidth=t.stats.bandwidth,this.roundTrip=t.stats.roundTripTime,t.map&&(t.map=this.initSegment(t.map,!0)),t.key&&this.segmentKey(t.key,!0),this.processSegmentResponse_(t)}}else this.mediaRequestsAborted+=1}},{key:"processSegmentResponse_",value:function(e){var t=this.pendingSegment_;t.bytes=e.bytes,e.map&&(t.segment.map.bytes=e.map.bytes),t.endOfAllRequests=e.endOfAllRequests,e.fmp4Captions&&(!function(e,t,i){for(var n in i)if(!e[n]){t.trigger({type:"usage",name:"hls-608"});var r=t.textTracks().getTrackById(n);e[n]=r||t.addRemoteTextTrack({kind:"captions",id:n,label:n},!1).track}}(this.inbandTextTracks_,this.hls_.tech_,e.captionStreams),function(e){var t=e.inbandTextTracks,i=e.captionArray,n=e.timestampOffset;if(i){var r=window.WebKitDataCue||window.VTTCue;i.forEach((function(e){var i=e.stream,s=e.startTime,a=e.endTime;t[i]&&(s+=n,a+=n,t[i].addCue(new r(s,a,e.text)))}))}}({inbandTextTracks:this.inbandTextTracks_,captionArray:e.fmp4Captions,timestampOffset:0}),this.captionParser_&&this.captionParser_.clearParsedCaptions()),this.handleSegment_()}},{key:"handleSegment_",value:function(){var e=this;if(this.pendingSegment_){var t=this.pendingSegment_,i=t.segment,n=this.syncController_.probeSegmentInfo(t);void 0===this.startingMedia_&&n&&(n.containsAudio||n.containsVideo)&&(this.startingMedia_={containsAudio:n.containsAudio,containsVideo:n.containsVideo});var r,s,a,o=(r=this.loaderType_,s=this.startingMedia_,a=n,"main"===r&&s&&a?a.containsAudio||a.containsVideo?s.containsVideo&&!a.containsVideo?"Only audio found in segment when we expected video. We can't switch to audio only from a stream that had video. To get rid of this message, please add codec information to the manifest.":!s.containsVideo&&a.containsVideo?"Video found in segment when we expected only audio. We can't switch to a stream with video from an audio only stream. To get rid of this message, please add codec information to the manifest.":null:"Neither audio nor video found in segment.":null);if(o)return this.error({message:o,blacklistDuration:1/0}),void this.trigger("error");if(t.isSyncRequest)return this.trigger("syncinfoupdate"),this.pendingSegment_=null,void(this.state="READY");if(null!==t.timestampOffset&&t.timestampOffset!==this.sourceUpdater_.timestampOffset()){if(n&&n.segmentTimestampInfo){var u=n.segmentTimestampInfo[0].ptsTime,l=n.segmentTimestampInfo[0].dtsTime;t.timestampOffset-=u-l}this.sourceUpdater_.timestampOffset(t.timestampOffset),this.trigger("timestampoffset")}var c=this.syncController_.mappingForTimeline(t.timeline);if(null!==c&&this.trigger({type:"segmenttimemapping",mapping:c}),this.state="APPENDING",i.map){var h=_c(i.map);if(!this.activeInitSegmentId_||this.activeInitSegmentId_!==h){var d=this.initSegment(i.map);this.sourceUpdater_.appendBuffer({bytes:d.bytes},(function(){e.activeInitSegmentId_=h}))}}t.byteLength=t.bytes.byteLength,"number"==typeof i.start&&"number"==typeof i.end?this.mediaSecondsLoaded+=i.end-i.start:this.mediaSecondsLoaded+=i.duration,this.logger_(function(e){var t=e.segment,i=t.start,n=t.end,r=e.playlist,s=r.mediaSequence,a=r.id,o=r.segments,u=void 0===o?[]:o,l=e.mediaIndex,c=e.timeline;return["appending ["+l+"] of ["+s+", "+(s+u.length)+"] from playlist ["+a+"]","["+i+" => "+n+"] in timeline ["+c+"]"].join(" ")}(t)),this.sourceUpdater_.appendBuffer({bytes:t.bytes,videoSegmentTimingInfoCallback:this.handleVideoSegmentTimingInfo_.bind(this,t.requestId)},this.handleUpdateEnd_.bind(this))}else this.state="READY"}},{key:"handleVideoSegmentTimingInfo_",value:function(e,t){if(this.pendingSegment_&&e===this.pendingSegment_.requestId){var i=this.pendingSegment_.segment;i.videoTimingInfo||(i.videoTimingInfo={}),i.videoTimingInfo.transmuxerPrependedSeconds=t.videoSegmentTimingInfo.prependedContentDuration||0,i.videoTimingInfo.transmuxedPresentationStart=t.videoSegmentTimingInfo.start.presentation,i.videoTimingInfo.transmuxedPresentationEnd=t.videoSegmentTimingInfo.end.presentation,i.videoTimingInfo.baseMediaDecodeTime=t.videoSegmentTimingInfo.baseMediaDecodeTime}}},{key:"handleUpdateEnd_",value:function(){if(!this.pendingSegment_)return this.state="READY",void(this.paused()||this.monitorBuffer_());var e=this.pendingSegment_,t=e.segment,i=null!==this.mediaIndex;this.pendingSegment_=null,this.recordThroughput_(e),this.addSegmentMetadataCue_(e),this.state="READY",this.mediaIndex=e.mediaIndex,this.fetchAtBuffer_=!0,this.currentTimeline_=e.timeline,this.trigger("syncinfoupdate"),t.end&&this.currentTime_()-t.end>3*e.playlist.targetDuration?this.resetEverything():(i&&this.trigger("bandwidthupdate"),this.trigger("progress"),this.isEndOfStream_(e.mediaIndex+1,e.playlist)&&this.endOfStream(),this.paused()||this.monitorBuffer_())}},{key:"recordThroughput_",value:function(e){var t=this.throughput.rate,i=Date.now()-e.endOfAllRequests+1,n=Math.floor(e.byteLength/i*8*1e3);this.throughput.rate+=(n-t)/++this.throughput.count}},{key:"addSegmentMetadataCue_",value:function(e){if(this.segmentMetadataTrack_){var t=e.segment,i=t.start,n=t.end;if(Ih(i)&&Ih(n)){Pc(i,n,this.segmentMetadataTrack_);var r=K.WebKitDataCue||K.VTTCue,s={custom:t.custom,dateTimeObject:t.dateTimeObject,dateTimeString:t.dateTimeString,bandwidth:e.playlist.attributes.BANDWIDTH,resolution:e.playlist.attributes.RESOLUTION,codecs:e.playlist.attributes.CODECS,byteLength:e.byteLength,uri:e.uri,timeline:e.timeline,playlist:e.playlist.id,start:i,end:n},a=new r(i,n,JSON.stringify(s));a.value=s,this.segmentMetadataTrack_.addCue(a)}}}}]),t}(Il.EventTarget),Lh=function(e){return decodeURIComponent(escape(String.fromCharCode.apply(null,e)))},Oh=new Uint8Array("\n\n".split("").map((function(e){return e.charCodeAt(0)}))),Dh=function(e){function t(e){var i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};Nl(this,t);var n=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this,e,i));return n.mediaSource_=null,n.subtitlesTrack_=null,n.featuresNativeTextTracks_=e.featuresNativeTextTracks,n}return Ul(t,e),Rl(t,[{key:"buffered_",value:function(){if(!this.subtitlesTrack_||!this.subtitlesTrack_.cues.length)return Il.createTimeRanges();var e=this.subtitlesTrack_.cues,t=e[0].startTime,i=e[e.length-1].startTime;return Il.createTimeRanges([[t,i]])}},{key:"initSegment",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!e)return null;var i=_c(e),n=this.initSegments_[i];if(t&&!n&&e.bytes){var r=Oh.byteLength+e.bytes.byteLength,s=new Uint8Array(r);s.set(e.bytes),s.set(Oh,e.bytes.byteLength),this.initSegments_[i]=n={resolvedUri:e.resolvedUri,byterange:e.byterange,bytes:s}}return n||e}},{key:"couldBeginLoading_",value:function(){return this.playlist_&&this.subtitlesTrack_&&!this.paused()}},{key:"init_",value:function(){return this.state="READY",this.resetEverything(),this.monitorBuffer_()}},{key:"track",value:function(e){return void 0===e||(this.subtitlesTrack_=e,"INIT"===this.state&&this.couldBeginLoading_()&&this.init_()),this.subtitlesTrack_}},{key:"remove",value:function(e,t){Pc(e,t,this.subtitlesTrack_)}},{key:"fillBuffer_",value:function(){var e=this;this.syncPoint_||(this.syncPoint_=this.syncController_.getSyncPoint(this.playlist_,this.duration_(),this.currentTimeline_,this.currentTime_()));var t=this.checkBuffer_(this.buffered_(),this.playlist_,this.mediaIndex,this.hasPlayed_(),this.currentTime_(),this.syncPoint_);if(t=this.skipEmptySegments_(t)){if(null===this.syncController_.timestampOffsetForTimeline(t.timeline)){return this.syncController_.one("timestampoffset",(function(){e.state="READY",e.paused()||e.monitorBuffer_()})),void(this.state="WAITING_ON_TIMELINE")}this.loadSegment_(t)}}},{key:"skipEmptySegments_",value:function(e){for(;e&&e.segment.empty;)e=this.generateSegmentInfo_(e.playlist,e.mediaIndex+1,e.startOfSegment+e.duration,e.isSyncRequest);return e}},{key:"handleSegment_",value:function(){var e=this;if(this.pendingSegment_&&this.subtitlesTrack_){this.state="APPENDING";var t=this.pendingSegment_,i=t.segment;if("function"!=typeof K.WebVTT&&this.subtitlesTrack_&&this.subtitlesTrack_.tech_){var n=void 0,r=function(){e.subtitlesTrack_.tech_.off("vttjsloaded",n),e.error({message:"Error loading vtt.js"}),e.state="READY",e.pause(),e.trigger("error")};return n=function(){e.subtitlesTrack_.tech_.off("vttjserror",r),e.handleSegment_()},this.state="WAITING_ON_VTTJS",this.subtitlesTrack_.tech_.one("vttjsloaded",n),void this.subtitlesTrack_.tech_.one("vttjserror",r)}i.requested=!0;try{this.parseVTTCues_(t)}catch(e){return this.error({message:e.message}),this.state="READY",this.pause(),this.trigger("error")}if(this.updateTimeMapping_(t,this.syncController_.timelines[t.timeline],this.playlist_),t.isSyncRequest)return this.trigger("syncinfoupdate"),this.pendingSegment_=null,void(this.state="READY");t.byteLength=t.bytes.byteLength,this.mediaSecondsLoaded+=i.duration,t.cues.length&&this.remove(t.cues[0].endTime,t.cues[t.cues.length-1].endTime),t.cues.forEach((function(t){e.subtitlesTrack_.addCue(e.featuresNativeTextTracks_?new K.VTTCue(t.startTime,t.endTime,t.text):t)})),this.handleUpdateEnd_()}else this.state="READY"}},{key:"parseVTTCues_",value:function(e){var t=void 0,i=!1;"function"==typeof K.TextDecoder?t=new K.TextDecoder("utf8"):(t=K.WebVTT.StringDecoder(),i=!0);var n=new K.WebVTT.Parser(K,K.vttjs,t);if(e.cues=[],e.timestampmap={MPEGTS:0,LOCAL:0},n.oncue=e.cues.push.bind(e.cues),n.ontimestampmap=function(t){return e.timestampmap=t},n.onparsingerror=function(e){Il.log.warn("Error encountered when parsing cues: "+e.message)},e.segment.map){var r=e.segment.map.bytes;i&&(r=Lh(r)),n.parse(r)}var s=e.bytes;i&&(s=Lh(s)),n.parse(s),n.flush()}},{key:"updateTimeMapping_",value:function(e,t,i){var n=e.segment;if(t)if(e.cues.length){var r=e.timestampmap,s=r.MPEGTS/9e4-r.LOCAL+t.mapping;if(e.cues.forEach((function(e){e.startTime+=s,e.endTime+=s})),!i.syncInfo){var a=e.cues[0].startTime,o=e.cues[e.cues.length-1].startTime;i.syncInfo={mediaSequence:i.mediaSequence+e.mediaIndex,time:Math.min(a,o-n.duration)}}}else n.empty=!0}}]),t}(Ph),Nh=function(e,t){for(var i=e.cues,n=0;n=r.adStartTime&&t<=r.adEndTime)return r}return null},Rh=Tr,Uh=[{name:"VOD",run:function(e,t,i,n,r){if(i!==1/0){return{time:0,segmentIndex:0}}return null}},{name:"ProgramDateTime",run:function(e,t,i,n,r){if(!e.datetimeToDisplayTime)return null;var s=t.segments||[],a=null,o=null;r=r||0;for(var u=0;u=c)&&(o=c,a={time:l.start,segmentIndex:u})}}return a}},{name:"Discontinuity",run:function(e,t,i,n,r){var s=null;if(r=r||0,t.discontinuityStarts&&t.discontinuityStarts.length)for(var a=null,o=0;o=h)&&(a=h,s={time:c.time,segmentIndex:u})}}return s}},{name:"Playlist",run:function(e,t,i,n,r){return t.syncInfo?{time:t.syncInfo.time,segmentIndex:t.syncInfo.mediaSequence-t.mediaSequence}:null}}],Mh=function(e){function t(){Nl(this,t);var e=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this));return e.inspectCache_=void 0,e.timelines=[],e.discontinuities=[],e.datetimeToDisplayTime=null,e.logger_=ph("SyncController"),e}return Ul(t,e),Rl(t,[{key:"getSyncPoint",value:function(e,t,i,n){var r=this.runStrategies_(e,t,i,n);return r.length?this.selectSyncPoint_(r,{key:"time",value:n}):null}},{key:"getExpiredTime",value:function(e,t){if(!e||!e.segments)return null;var i=this.runStrategies_(e,t,e.discontinuitySequence,0);if(!i.length)return null;var n=this.selectSyncPoint_(i,{key:"segmentIndex",value:0});return n.segmentIndex>0&&(n.time*=-1),Math.abs(n.time+Jl(e,n.segmentIndex,0))}},{key:"runStrategies_",value:function(e,t,i,n){for(var r=[],s=0;s=0;i--){var n=e.segments[i];if(n&&void 0!==n.start){t.syncInfo={mediaSequence:e.mediaSequence+i,time:n.start},this.logger_("playlist refresh sync: [time:"+t.syncInfo.time+", mediaSequence: "+t.syncInfo.mediaSequence+"]"),this.trigger("syncinfoupdate");break}}}},{key:"setDateTimeMapping",value:function(e){if(!this.datetimeToDisplayTime&&e.segments&&e.segments.length&&e.segments[0].dateTimeObject){var t=e.segments[0].dateTimeObject.getTime()/1e3;this.datetimeToDisplayTime=-t}}},{key:"reset",value:function(){this.inspectCache_=void 0}},{key:"probeSegmentInfo",value:function(e){var t=e.segment,i=e.playlist,n=void 0;return(n=t.map?this.probeMp4Segment_(e):this.probeTsSegment_(e))&&this.calculateSegmentTimeMapping_(e,n)&&(this.saveDiscontinuitySyncInfo_(e),i.syncInfo||(i.syncInfo={mediaSequence:i.mediaSequence+e.mediaIndex,time:t.start})),n}},{key:"probeMp4Segment_",value:function(e){var t=e.segment,i=On.timescale(t.map.bytes),n=On.compositionStartTime(i,e.bytes);return null!==e.timestampOffset&&(e.timestampOffset-=n),{start:n,end:n+t.duration}}},{key:"probeTsSegment_",value:function(e){var t=Rh(e.bytes,this.inspectCache_),i=void 0,n=void 0,r=void 0;return t?(t.video&&2===t.video.length?(this.inspectCache_=t.video[1].dts,i=t.video[0].dtsTime,n=t.video[1].dtsTime,r=t.video):t.audio&&2===t.audio.length&&(this.inspectCache_=t.audio[1].dts,i=t.audio[0].dtsTime,n=t.audio[1].dtsTime,r=t.audio),{segmentTimestampInfo:r,start:i,end:n,containsVideo:t.video&&2===t.video.length,containsAudio:t.audio&&2===t.audio.length}):null}},{key:"timestampOffsetForTimeline",value:function(e){return void 0===this.timelines[e]?null:this.timelines[e].time}},{key:"mappingForTimeline",value:function(e){return void 0===this.timelines[e]?null:this.timelines[e].mapping}},{key:"calculateSegmentTimeMapping_",value:function(e,t){var i=e.segment,n=this.timelines[e.timeline];if(null!==e.timestampOffset)n={time:e.startOfSegment,mapping:e.startOfSegment-t.start},this.timelines[e.timeline]=n,this.trigger("timestampoffset"),this.logger_("time mapping for timeline "+e.timeline+": [time: "+n.time+"] [mapping: "+n.mapping+"]"),i.start=e.startOfSegment,i.end=t.end+n.mapping;else{if(!n)return!1;i.start=t.start+n.mapping,i.end=t.end+n.mapping}return!0}},{key:"saveDiscontinuitySyncInfo_",value:function(e){var t=e.playlist,i=e.segment;if(i.discontinuity)this.discontinuities[i.timeline]={time:i.start,accuracy:0};else if(t.discontinuityStarts&&t.discontinuityStarts.length)for(var n=0;no){var u=void 0;u=a<0?i.start-Jl(t,e.mediaIndex,r):i.end+Jl(t,e.mediaIndex+1,r),this.discontinuities[s]={time:u,accuracy:o}}}}},{key:"dispose",value:function(){this.trigger("dispose"),this.off()}}]),t}(Il.EventTarget),Bh=new Bc("./decrypter-worker.worker.js",(function(e,t){var i=this;!function(){var e=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},t=function(){function e(e,t){for(var i=0;i>7))^s]=s;for(a=o=0;!n[a];a^=c||1,o=l[o]||1)for(d=(d=o^o<<1^o<<2^o<<3^o<<4)>>8^255&d^99,n[a]=d,r[d]=a,f=16843009*u[h=u[c=u[a]]]^65537*h^257*c^16843008*a,p=257*u[d]^16843008*d,s=0;s<4;s++)t[s][a]=p=p<<24^p>>>8,i[s][d]=f=f<<24^f>>>8;for(s=0;s<5;s++)t[s]=t[s].slice(0),i[s]=i[s].slice(0);return e}()),this._tables=[[n[0][0].slice(),n[0][1].slice(),n[0][2].slice(),n[0][3].slice(),n[0][4].slice()],[n[1][0].slice(),n[1][1].slice(),n[1][2].slice(),n[1][3].slice(),n[1][4].slice()]];var r=void 0,s=void 0,a=void 0,o=void 0,u=void 0,l=this._tables[0][4],c=this._tables[1],h=i.length,d=1;if(4!==h&&6!==h&&8!==h)throw new Error("Invalid aes key size");for(o=i.slice(0),u=[],this._key=[o,u],r=h;r<4*h+28;r++)a=o[r-1],(r%h==0||8===h&&r%h==4)&&(a=l[a>>>24]<<24^l[a>>16&255]<<16^l[a>>8&255]<<8^l[255&a],r%h==0&&(a=a<<8^a>>>24^d<<24,d=d<<1^283*(d>>7))),o[r]=o[r-h]^a;for(s=0;r;s++,r--)a=o[3&s?r:r-4],u[s]=r<=4||s<4?a:c[0][l[a>>>24]]^c[1][l[a>>16&255]]^c[2][l[a>>8&255]]^c[3][l[255&a]]}return t.prototype.decrypt=function(e,t,i,n,r,s){var a=this._key[1],o=e^a[0],u=n^a[1],l=i^a[2],c=t^a[3],h=void 0,d=void 0,p=void 0,f=a.length/4-2,m=void 0,g=4,v=this._tables[1],y=v[0],_=v[1],b=v[2],T=v[3],S=v[4];for(m=0;m>>24]^_[u>>16&255]^b[l>>8&255]^T[255&c]^a[g],d=y[u>>>24]^_[l>>16&255]^b[c>>8&255]^T[255&o]^a[g+1],p=y[l>>>24]^_[c>>16&255]^b[o>>8&255]^T[255&u]^a[g+2],c=y[c>>>24]^_[o>>16&255]^b[u>>8&255]^T[255&l]^a[g+3],g+=4,o=h,u=d,l=p;for(m=0;m<4;m++)r[(3&-m)+s]=S[o>>>24]<<24^S[u>>16&255]<<16^S[l>>8&255]<<8^S[255&c]^a[g++],h=o,o=u,u=l,l=c,c=h},t}(),s=function(){function t(){e(this,t),this.listeners={}}return t.prototype.on=function(e,t){this.listeners[e]||(this.listeners[e]=[]),this.listeners[e].push(t)},t.prototype.off=function(e,t){if(!this.listeners[e])return!1;var i=this.listeners[e].indexOf(t);return this.listeners[e].splice(i,1),i>-1},t.prototype.trigger=function(e){var t=this.listeners[e];if(t)if(2===arguments.length)for(var i=t.length,n=0;n>8|e>>>24},u=function(){function i(t,n,r,s){e(this,i);var u=i.STEP,l=new Int32Array(t.buffer),c=new Uint8Array(t.byteLength),h=0;for(this.asyncStream_=new a,this.asyncStream_.push(this.decryptChunk_(l.subarray(h,h+u),n,r,c)),h=u;h>2),s=new r(Array.prototype.slice.call(t)),a=new Uint8Array(e.byteLength),u=new Int32Array(a.buffer),l=void 0,c=void 0,h=void 0,d=void 0,p=void 0,f=void 0,m=void 0,g=void 0,v=void 0;for(l=i[0],c=i[1],h=i[2],d=i[3],v=0;v=0&&(t="main-desc"),t},Fh=function(e,t){e.abort(),e.pause(),t&&t.activePlaylistLoader&&(t.activePlaylistLoader.pause(),t.activePlaylistLoader=null)},Hh=function(e,t){t.activePlaylistLoader=e,e.load()},Vh={AUDIO:function(e,t){return function(){var i=t.segmentLoaders[e],n=t.mediaTypes[e],r=t.blacklistCurrentPlaylist;Fh(i,n);var s=n.activeTrack(),a=n.activeGroup(),o=(a.filter((function(e){return e.default}))[0]||a[0]).id,u=n.tracks[o];if(s!==u){for(var l in Il.log.warn("Problem encountered loading the alternate audio track.Switching back to default."),n.tracks)n.tracks[l].enabled=n.tracks[l]===u;n.onTrackChanged()}else r({message:"Problem encountered loading the default audio track."})}},SUBTITLES:function(e,t){return function(){var i=t.segmentLoaders[e],n=t.mediaTypes[e];Il.log.warn("Problem encountered loading the subtitle track.Disabling subtitle track."),Fh(i,n);var r=n.activeTrack();r&&(r.mode="disabled"),n.onTrackChanged()}}},qh={AUDIO:function(e,t,i){if(t){var n=i.tech,r=i.requestOptions,s=i.segmentLoaders[e];t.on("loadedmetadata",(function(){var e=t.media();s.playlist(e,r),(!n.paused()||e.endList&&"none"!==n.preload())&&s.load()})),t.on("loadedplaylist",(function(){s.playlist(t.media(),r),n.paused()||s.load()})),t.on("error",Vh[e](e,i))}},SUBTITLES:function(e,t,i){var n=i.tech,r=i.requestOptions,s=i.segmentLoaders[e],a=i.mediaTypes[e];t.on("loadedmetadata",(function(){var e=t.media();s.playlist(e,r),s.track(a.activeTrack()),(!n.paused()||e.endList&&"none"!==n.preload())&&s.load()})),t.on("loadedplaylist",(function(){s.playlist(t.media(),r),n.paused()||s.load()})),t.on("error",Vh[e](e,i))}},Wh={AUDIO:function(e,t){var i=t.hls,n=t.sourceType,r=t.segmentLoaders[e],s=t.requestOptions,a=t.master.mediaGroups,o=t.mediaTypes[e],u=o.groups,l=o.tracks,c=t.masterPlaylistLoader;for(var h in a[e]&&0!==Object.keys(a[e]).length||(a[e]={main:{default:{default:!0}}}),a[e])for(var d in u[h]||(u[h]=[]),a[e][h]){var p=a[e][h][d],f=void 0;if(f=p.resolvedUri?new Xl(p.resolvedUri,i,s):p.playlists&&"dash"===n?new dh(p.playlists[0],i,s,c):null,p=Il.mergeOptions({id:d,playlistLoader:f},p),qh[e](e,p.playlistLoader,t),u[h].push(p),void 0===l[d]){var m=new Il.AudioTrack({id:d,kind:jh(p),enabled:!1,language:p.language,default:p.default,label:d});l[d]=m}}r.on("error",Vh[e](e,t))},SUBTITLES:function(e,t){var i=t.tech,n=t.hls,r=t.sourceType,s=t.segmentLoaders[e],a=t.requestOptions,o=t.master.mediaGroups,u=t.mediaTypes[e],l=u.groups,c=u.tracks,h=t.masterPlaylistLoader;for(var d in o[e])for(var p in l[d]||(l[d]=[]),o[e][d])if(!o[e][d][p].forced){var f=o[e][d][p],m=void 0;if("hls"===r?m=new Xl(f.resolvedUri,n,a):"dash"===r&&(m=new dh(f.playlists[0],n,a,h)),f=Il.mergeOptions({id:p,playlistLoader:m},f),qh[e](e,f.playlistLoader,t),l[d].push(f),void 0===c[p]){var g=i.addRemoteTextTrack({id:p,kind:"subtitles",default:f.default&&f.autoselect,language:f.language,label:p},!1).track;c[p]=g}}s.on("error",Vh[e](e,t))},"CLOSED-CAPTIONS":function(e,t){var i=t.tech,n=t.master.mediaGroups,r=t.mediaTypes[e],s=r.groups,a=r.tracks;for(var o in n[e])for(var u in s[o]||(s[o]=[]),n[e][o]){var l=n[e][o][u];if(l.instreamId.match(/CC\d/)&&(s[o].push(Il.mergeOptions({id:u},l)),void 0===a[u])){var c=i.addRemoteTextTrack({id:l.instreamId,kind:"captions",default:l.default&&l.autoselect,language:l.language,label:u},!1).track;a[u]=c}}}},zh={AUDIO:function(e,t){return function(){var i=t.mediaTypes[e].tracks;for(var n in i)if(i[n].enabled)return i[n];return null}},SUBTITLES:function(e,t){return function(){var i=t.mediaTypes[e].tracks;for(var n in i)if("showing"===i[n].mode||"hidden"===i[n].mode)return i[n];return null}}},Gh=function(e){["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((function(t){Wh[t](t,e)}));var t=e.mediaTypes,i=e.masterPlaylistLoader,n=e.tech,r=e.hls;["AUDIO","SUBTITLES"].forEach((function(i){t[i].activeGroup=function(e,t){return function(i){var n=t.masterPlaylistLoader,r=t.mediaTypes[e].groups,s=n.media();if(!s)return null;var a=null;return s.attributes[e]&&(a=r[s.attributes[e]]),a=a||r.main,void 0===i?a:null===i?null:a.filter((function(e){return e.id===i.id}))[0]||null}}(i,e),t[i].activeTrack=zh[i](i,e),t[i].onGroupChanged=function(e,t){return function(){var i=t.segmentLoaders,n=i[e],r=i.main,s=t.mediaTypes[e],a=s.activeTrack(),o=s.activeGroup(a),u=s.activePlaylistLoader;Fh(n,s),o&&(o.playlistLoader?(n.resyncLoader(),Hh(o.playlistLoader,s)):u&&r.resetEverything())}}(i,e),t[i].onTrackChanged=function(e,t){return function(){var i=t.segmentLoaders,n=i[e],r=i.main,s=t.mediaTypes[e],a=s.activeTrack(),o=s.activeGroup(a),u=s.activePlaylistLoader;Fh(n,s),o&&(o.playlistLoader?u!==o.playlistLoader?(n.track&&n.track(a),n.resetEverything(),Hh(o.playlistLoader,s)):Hh(o.playlistLoader,s):r.resetEverything())}}(i,e)}));var s=t.AUDIO.activeGroup(),a=(s.filter((function(e){return e.default}))[0]||s[0]).id;t.AUDIO.tracks[a].enabled=!0,t.AUDIO.onTrackChanged(),i.on("mediachange",(function(){["AUDIO","SUBTITLES"].forEach((function(e){return t[e].onGroupChanged()}))}));var o=function(){t.AUDIO.onTrackChanged(),n.trigger({type:"usage",name:"hls-audio-change"})};for(var u in n.audioTracks().addEventListener("change",o),n.remoteTextTracks().addEventListener("change",t.SUBTITLES.onTrackChanged),r.on("dispose",(function(){n.audioTracks().removeEventListener("change",o),n.remoteTextTracks().removeEventListener("change",t.SUBTITLES.onTrackChanged)})),n.clearTracks("audio"),t.AUDIO.tracks)n.audioTracks().addTrack(t.AUDIO.tracks[u])},$h=void 0,Xh=["mediaRequests","mediaRequestsAborted","mediaRequestsTimedout","mediaRequestsErrored","mediaTransferDuration","mediaBytesTransferred"],Kh=function(e){return this.audioSegmentLoader_[e]+this.mainSegmentLoader_[e]},Yh=function(e){function t(e){Nl(this,t);var i,n=Ml(this,(t.__proto__||Object.getPrototypeOf(t)).call(this)),r=e.url,s=e.handleManifestRedirects,a=e.withCredentials,o=e.tech,u=e.bandwidth,l=e.externHls,c=e.useCueTags,h=e.blacklistDuration,d=e.enableLowInitialPlaylist,p=e.cacheEncryptionKeys,f=e.sourceType;if(!r)throw new Error("A non-empty playlist URL is required");$h=l,n.withCredentials=a,n.tech_=o,n.hls_=o.hls,n.sourceType_=f,n.useCueTags_=c,n.blacklistDuration=h,n.enableLowInitialPlaylist=d,n.useCueTags_&&(n.cueTagsTrack_=n.tech_.addTextTrack("metadata","ad-cues"),n.cueTagsTrack_.inBandMetadataTrackDispatchType=""),n.requestOptions_={withCredentials:a,handleManifestRedirects:s,timeout:null},n.mediaTypes_=(i={},["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((function(e){i[e]={groups:{},tracks:{},activePlaylistLoader:null,activeGroup:fh,activeTrack:fh,onGroupChanged:fh,onTrackChanged:fh}})),i),n.mediaSource=new Il.MediaSource,n.mediaSource.addEventListener("sourceopen",n.handleSourceOpen_.bind(n)),n.seekable_=Il.createTimeRanges(),n.hasPlayed_=!1,n.syncController_=new Mh(e),n.segmentMetadataTrack_=o.addRemoteTextTrack({kind:"metadata",label:"segment-metadata"},!1).track,n.decrypter_=new Bh,n.inbandTextTracks_={};var m={hls:n.hls_,mediaSource:n.mediaSource,currentTime:n.tech_.currentTime.bind(n.tech_),seekable:function(){return n.seekable()},seeking:function(){return n.tech_.seeking()},duration:function(){return n.mediaSource.duration},hasPlayed:function(){return n.hasPlayed_},goalBufferLength:function(){return n.goalBufferLength()},bandwidth:u,syncController:n.syncController_,decrypter:n.decrypter_,sourceType:n.sourceType_,inbandTextTracks:n.inbandTextTracks_,cacheEncryptionKeys:p};return n.masterPlaylistLoader_="dash"===n.sourceType_?new dh(r,n.hls_,n.requestOptions_):new Xl(r,n.hls_,n.requestOptions_),n.setupMasterPlaylistLoaderListeners_(),n.mainSegmentLoader_=new Ph(Il.mergeOptions(m,{segmentMetadataTrack:n.segmentMetadataTrack_,loaderType:"main"}),e),n.audioSegmentLoader_=new Ph(Il.mergeOptions(m,{loaderType:"audio"}),e),n.subtitleSegmentLoader_=new Dh(Il.mergeOptions(m,{loaderType:"vtt",featuresNativeTextTracks:n.tech_.featuresNativeTextTracks}),e),n.setupSegmentLoaderListeners_(),Xh.forEach((function(e){n[e+"_"]=Kh.bind(n,e)})),n.logger_=ph("MPC"),n.masterPlaylistLoader_.load(),n}return Ul(t,e),Rl(t,[{key:"setupMasterPlaylistLoaderListeners_",value:function(){var e=this;this.masterPlaylistLoader_.on("loadedmetadata",(function(){var t=e.masterPlaylistLoader_.media(),i=1.5*t.targetDuration*1e3;lc(e.masterPlaylistLoader_.master,e.masterPlaylistLoader_.media())?e.requestOptions_.timeout=0:e.requestOptions_.timeout=i,t.endList&&"none"!==e.tech_.preload()&&(e.mainSegmentLoader_.playlist(t,e.requestOptions_),e.mainSegmentLoader_.load()),Gh({sourceType:e.sourceType_,segmentLoaders:{AUDIO:e.audioSegmentLoader_,SUBTITLES:e.subtitleSegmentLoader_,main:e.mainSegmentLoader_},tech:e.tech_,requestOptions:e.requestOptions_,masterPlaylistLoader:e.masterPlaylistLoader_,hls:e.hls_,master:e.master(),mediaTypes:e.mediaTypes_,blacklistCurrentPlaylist:e.blacklistCurrentPlaylist.bind(e)}),e.triggerPresenceUsage_(e.master(),t);try{e.setupSourceBuffers_()}catch(t){return Il.log.warn("Failed to create SourceBuffers",t),e.mediaSource.endOfStream("decode")}e.setupFirstPlay(),!e.mediaTypes_.AUDIO.activePlaylistLoader||e.mediaTypes_.AUDIO.activePlaylistLoader.media()?e.trigger("selectedinitialmedia"):e.mediaTypes_.AUDIO.activePlaylistLoader.one("loadedmetadata",(function(){e.trigger("selectedinitialmedia")}))})),this.masterPlaylistLoader_.on("loadedplaylist",(function(){var t=e.masterPlaylistLoader_.media();if(!t){e.excludeUnsupportedVariants_();var i=void 0;return e.enableLowInitialPlaylist&&(i=e.selectInitialPlaylist()),i||(i=e.selectPlaylist()),e.initialMedia_=i,void e.masterPlaylistLoader_.media(e.initialMedia_)}if(e.useCueTags_&&e.updateAdCues_(t),e.mainSegmentLoader_.playlist(t,e.requestOptions_),e.updateDuration(),e.tech_.paused()||(e.mainSegmentLoader_.load(),e.audioSegmentLoader_&&e.audioSegmentLoader_.load()),!t.endList){var n=function(){var t=e.seekable();0!==t.length&&e.mediaSource.addSeekableRange_(t.start(0),t.end(0))};if(e.duration()!==1/0){e.tech_.one("durationchange",(function t(){e.duration()===1/0?n():e.tech_.one("durationchange",t)}))}else n()}})),this.masterPlaylistLoader_.on("error",(function(){e.blacklistCurrentPlaylist(e.masterPlaylistLoader_.error)})),this.masterPlaylistLoader_.on("mediachanging",(function(){e.mainSegmentLoader_.abort(),e.mainSegmentLoader_.pause()})),this.masterPlaylistLoader_.on("mediachange",(function(){var t=e.masterPlaylistLoader_.media(),i=1.5*t.targetDuration*1e3;lc(e.masterPlaylistLoader_.master,e.masterPlaylistLoader_.media())?e.requestOptions_.timeout=0:e.requestOptions_.timeout=i,e.mainSegmentLoader_.playlist(t,e.requestOptions_),e.mainSegmentLoader_.load(),e.tech_.trigger({type:"mediachange",bubbles:!0})})),this.masterPlaylistLoader_.on("playlistunchanged",(function(){var t=e.masterPlaylistLoader_.media();e.stuckAtPlaylistEnd_(t)&&(e.blacklistCurrentPlaylist({message:"Playlist no longer updating."}),e.tech_.trigger("playliststuck"))})),this.masterPlaylistLoader_.on("renditiondisabled",(function(){e.tech_.trigger({type:"usage",name:"hls-rendition-disabled"})})),this.masterPlaylistLoader_.on("renditionenabled",(function(){e.tech_.trigger({type:"usage",name:"hls-rendition-enabled"})}))}},{key:"triggerPresenceUsage_",value:function(e,t){var i=e.mediaGroups||{},n=!0,r=Object.keys(i.AUDIO);for(var s in i.AUDIO)for(var a in i.AUDIO[s]){i.AUDIO[s][a].uri||(n=!1)}n&&this.tech_.trigger({type:"usage",name:"hls-demuxed"}),Object.keys(i.SUBTITLES).length&&this.tech_.trigger({type:"usage",name:"hls-webvtt"}),$h.Playlist.isAes(t)&&this.tech_.trigger({type:"usage",name:"hls-aes"}),$h.Playlist.isFmp4(t)&&this.tech_.trigger({type:"usage",name:"hls-fmp4"}),r.length&&Object.keys(i.AUDIO[r[0]]).length>1&&this.tech_.trigger({type:"usage",name:"hls-alternate-audio"}),this.useCueTags_&&this.tech_.trigger({type:"usage",name:"hls-playlist-cue-tags"})}},{key:"setupSegmentLoaderListeners_",value:function(){var e=this;this.mainSegmentLoader_.on("bandwidthupdate",(function(){var t=e.selectPlaylist(),i=e.masterPlaylistLoader_.media(),n=e.tech_.buffered();(function(e){var t=e.currentPlaylist,i=e.nextPlaylist,n=e.forwardBuffer,r=e.bufferLowWaterLine,s=e.duration;e.log;return i?!t.endList||(s=r)):(Il.log.warn("We received no playlist to switch to. Please check your stream."),!1)})({currentPlaylist:i,nextPlaylist:t,forwardBuffer:n.length?n.end(n.length-1)-e.tech_.currentTime():0,bufferLowWaterLine:e.bufferLowWaterLine(),duration:e.duration(),log:e.logger_})&&e.masterPlaylistLoader_.media(t),e.tech_.trigger("bandwidthupdate")})),this.mainSegmentLoader_.on("progress",(function(){e.trigger("progress")})),this.mainSegmentLoader_.on("error",(function(){e.blacklistCurrentPlaylist(e.mainSegmentLoader_.error())})),this.mainSegmentLoader_.on("syncinfoupdate",(function(){e.onSyncInfoUpdate_()})),this.mainSegmentLoader_.on("timestampoffset",(function(){e.tech_.trigger({type:"usage",name:"hls-timestamp-offset"})})),this.audioSegmentLoader_.on("syncinfoupdate",(function(){e.onSyncInfoUpdate_()})),this.mainSegmentLoader_.on("ended",(function(){e.onEndOfStream()})),this.mainSegmentLoader_.on("earlyabort",(function(){e.blacklistCurrentPlaylist({message:"Aborted early because there isn't enough bandwidth to complete the request without rebuffering."},120)})),this.mainSegmentLoader_.on("reseteverything",(function(){e.tech_.trigger("hls-reset")})),this.mainSegmentLoader_.on("segmenttimemapping",(function(t){e.tech_.trigger({type:"hls-segment-time-mapping",mapping:t.mapping})})),this.audioSegmentLoader_.on("ended",(function(){e.onEndOfStream()}))}},{key:"mediaSecondsLoaded_",value:function(){return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded+this.mainSegmentLoader_.mediaSecondsLoaded)}},{key:"load",value:function(){this.mainSegmentLoader_.load(),this.mediaTypes_.AUDIO.activePlaylistLoader&&this.audioSegmentLoader_.load(),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&this.subtitleSegmentLoader_.load()}},{key:"smoothQualityChange_",value:function(){var e=this.selectPlaylist();e!==this.masterPlaylistLoader_.media()&&(this.masterPlaylistLoader_.media(e),this.mainSegmentLoader_.resetLoader())}},{key:"fastQualityChange_",value:function(){var e=this,t=this.selectPlaylist();t!==this.masterPlaylistLoader_.media()&&(this.masterPlaylistLoader_.media(t),this.mainSegmentLoader_.resetEverything((function(){Il.browser.IE_VERSION||Il.browser.IS_EDGE?e.tech_.setCurrentTime(e.tech_.currentTime()+.04):e.tech_.setCurrentTime(e.tech_.currentTime())})))}},{key:"play",value:function(){if(!this.setupFirstPlay()){this.tech_.ended()&&this.tech_.setCurrentTime(0),this.hasPlayed_&&this.load();var e=this.tech_.seekable();return this.tech_.duration()===1/0&&this.tech_.currentTime()0&&void 0!==arguments[0]?arguments[0]:{},t=arguments[1],i=void 0,n=void 0;if(i=e.playlist||this.masterPlaylistLoader_.media(),t=t||e.blacklistDuration||this.blacklistDuration,!i){this.error=e;try{return this.mediaSource.endOfStream("network")}catch(e){return this.trigger("error")}}var r=1===this.masterPlaylistLoader_.master.playlists.filter(oc).length,s=this.masterPlaylistLoader_.master.playlists;return 1===s.length?(Il.log.warn("Problem encountered with the current HLS playlist. Trying again since it is the only playlist."),this.tech_.trigger("retryplaylist"),this.masterPlaylistLoader_.load(r)):(r&&(Il.log.warn("Removing all playlists from the blacklist because the last rendition is about to be blacklisted."),s.forEach((function(e){e.excludeUntil!==1/0&&delete e.excludeUntil})),this.tech_.trigger("retryplaylist")),i.excludeUntil=Date.now()+1e3*t,this.tech_.trigger("blacklistplaylist"),this.tech_.trigger({type:"usage",name:"hls-rendition-blacklisted"}),n=this.selectPlaylist(),Il.log.warn("Problem encountered with the current HLS playlist."+(e.message?" "+e.message:"")+" Switching to another playlist."),this.masterPlaylistLoader_.media(n,r))}},{key:"pauseLoading",value:function(){this.mainSegmentLoader_.pause(),this.mediaTypes_.AUDIO.activePlaylistLoader&&this.audioSegmentLoader_.pause(),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&this.subtitleSegmentLoader_.pause()}},{key:"setCurrentTime",value:function(e){var t=Ec(this.tech_.buffered(),e);return this.masterPlaylistLoader_&&this.masterPlaylistLoader_.media()&&this.masterPlaylistLoader_.media().segments?t&&t.length?e:(this.mainSegmentLoader_.resetEverything(),this.mainSegmentLoader_.abort(),this.mediaTypes_.AUDIO.activePlaylistLoader&&(this.audioSegmentLoader_.resetEverything(),this.audioSegmentLoader_.abort()),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&(this.subtitleSegmentLoader_.resetEverything(),this.subtitleSegmentLoader_.abort()),void this.load()):0}},{key:"duration",value:function(){return this.masterPlaylistLoader_?this.mediaSource?this.mediaSource.duration:$h.Playlist.duration(this.masterPlaylistLoader_.media()):0}},{key:"seekable",value:function(){return this.seekable_}},{key:"onSyncInfoUpdate_",value:function(){var e=void 0;if(this.masterPlaylistLoader_){var t=this.masterPlaylistLoader_.media();if(t){var i=this.syncController_.getExpiredTime(t,this.mediaSource.duration);if(null!==i){var n=this.masterPlaylistLoader_.master.suggestedPresentationDelay,r=$h.Playlist.seekable(t,i,n);if(0!==r.length){if(this.mediaTypes_.AUDIO.activePlaylistLoader){if(t=this.mediaTypes_.AUDIO.activePlaylistLoader.media(),null===(i=this.syncController_.getExpiredTime(t,this.mediaSource.duration)))return;if(0===(e=$h.Playlist.seekable(t,i,n)).length)return}var s=void 0,a=void 0;this.seekable_&&this.seekable_.length&&(s=this.seekable_.end(0),a=this.seekable_.start(0)),e?e.start(0)>r.end(0)||r.start(0)>e.end(0)?this.seekable_=r:this.seekable_=Il.createTimeRanges([[e.start(0)>r.start(0)?e.start(0):r.start(0),e.end(0) "+i);try{e.mediaSource.duration=i}catch(e){Il.log.warn("Failed to set media source duration",e)}e.tech_.trigger("durationchange"),e.mediaSource.removeEventListener("sourceopen",t)};n.length>0&&(i=Math.max(i,n.end(n.length-1))),t!==i&&("open"!==this.mediaSource.readyState?this.mediaSource.addEventListener("sourceopen",r):r())}},{key:"dispose",value:function(){var e=this;this.trigger("dispose"),this.decrypter_&&this.decrypter_.terminate(),this.masterPlaylistLoader_.dispose(),this.mainSegmentLoader_.dispose(),["AUDIO","SUBTITLES"].forEach((function(t){var i=e.mediaTypes_[t].groups;for(var n in i)i[n].forEach((function(e){e.playlistLoader&&e.playlistLoader.dispose()}))})),this.audioSegmentLoader_.dispose(),this.subtitleSegmentLoader_.dispose(),this.off(),this.mediaSource.dispose&&this.mediaSource.dispose()}},{key:"master",value:function(){return this.masterPlaylistLoader_.master}},{key:"media",value:function(){return this.masterPlaylistLoader_.media()||this.initialMedia_}},{key:"setupSourceBuffers_",value:function(){var e,t=this.masterPlaylistLoader_.media();if(t&&"open"===this.mediaSource.readyState){if((e=Xc(this.masterPlaylistLoader_.master,t)).length<1)return this.error="No compatible SourceBuffer configuration for the variant stream:"+t.resolvedUri,this.mediaSource.endOfStream("decode");this.configureLoaderMimeTypes_(e),this.excludeIncompatibleVariants_(t)}}},{key:"configureLoaderMimeTypes_",value:function(e){var t=e.length>1&&-1===e[0].indexOf(",")&&e[0]!==e[1]?new Il.EventTarget:null;this.mainSegmentLoader_.mimeType(e[0],t),e[1]&&this.audioSegmentLoader_.mimeType(e[1],t)}},{key:"excludeUnsupportedVariants_",value:function(){this.master().playlists.forEach((function(e){var t;e.attributes.CODECS&&K.MediaSource&&K.MediaSource.isTypeSupported&&!K.MediaSource.isTypeSupported('video/mp4; codecs="'+(t=e.attributes.CODECS,t.replace(/avc1\.(\d+)\.(\d+)/i,(function(e){return zc([e])[0]}))+'"'))&&(e.excludeUntil=1/0)}))}},{key:"excludeIncompatibleVariants_",value:function(e){var t=2,i=null,n=void 0;e.attributes.CODECS&&(n=Gc(e.attributes.CODECS),i=n.videoCodec,t=n.codecCount),this.master().playlists.forEach((function(e){var n={codecCount:2,videoCodec:null};e.attributes.CODECS&&(n=Gc(e.attributes.CODECS)),n.codecCount!==t&&(e.excludeUntil=1/0),n.videoCodec!==i&&(e.excludeUntil=1/0)}))}},{key:"updateAdCues_",value:function(e){var t=0,i=this.seekable();i.length&&(t=i.start(0)),function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0;if(e.segments)for(var n=i,r=void 0,s=0;s=t.end(t.length-1)))return this.techWaiting_();this.consecutiveUpdates>=5&&e===this.lastRecordedTime?(this.consecutiveUpdates++,this.waiting_()):e===this.lastRecordedTime?this.consecutiveUpdates++:(this.consecutiveUpdates=0,this.lastRecordedTime=e)}}},{key:"cancelTimer_",value:function(){this.consecutiveUpdates=0,this.timer_&&(this.logger_("cancelTimer_"),clearTimeout(this.timer_)),this.timer_=null}},{key:"fixesBadSeeks_",value:function(){if(!this.tech_.seeking())return!1;var e=this.seekable(),t=this.tech_.currentTime(),i=void 0;this.afterSeekableWindow_(e,t,this.media(),this.allowSeeksWithinUnsafeLiveWindow)&&(i=e.end(e.length-1));this.beforeSeekableWindow_(e,t)&&(i=e.start(0)+.1);return void 0!==i&&(this.logger_("Trying to seek outside of seekable at time "+t+" with seekable range "+Ac(e)+". Seeking to "+i+"."),this.tech_.setCurrentTime(i),!0)}},{key:"waiting_",value:function(){if(!this.techWaiting_()){var e=this.tech_.currentTime(),t=this.tech_.buffered(),i=Ec(t,e);return i.length&&e+3<=i.end(0)?(this.cancelTimer_(),this.tech_.setCurrentTime(e),this.logger_("Stopped at "+e+" while inside a buffered region ["+i.start(0)+" -> "+i.end(0)+"]. Attempting to resume playback by seeking to the current time."),void this.tech_.trigger({type:"usage",name:"hls-unknown-waiting"})):void 0}}},{key:"techWaiting_",value:function(){var e=this.seekable(),t=this.tech_.currentTime();if(this.tech_.seeking()&&this.fixesBadSeeks_())return!0;if(this.tech_.seeking()||null!==this.timer_)return!0;if(this.beforeSeekableWindow_(e,t)){var i=e.end(e.length-1);return this.logger_("Fell out of live window at time "+t+". Seeking to live point (seekable end) "+i),this.cancelTimer_(),this.tech_.setCurrentTime(i),this.tech_.trigger({type:"usage",name:"hls-live-resync"}),!0}var n=this.tech_.buffered(),r=xc(n,t);if(this.videoUnderflow_(r,n,t))return this.cancelTimer_(),this.tech_.setCurrentTime(t),this.tech_.trigger({type:"usage",name:"hls-video-underflow"}),!0;if(r.length>0){var s=r.start(0)-t;return this.logger_("Stopped at "+t+", setting timer for "+s+", seeking to "+r.start(0)),this.timer_=setTimeout(this.skipTheGap_.bind(this),1e3*s,t),!0}return!1}},{key:"afterSeekableWindow_",value:function(e,t,i){var n=arguments.length>3&&void 0!==arguments[3]&&arguments[3];if(!e.length)return!1;var r=e.end(e.length-1)+.1,s=!i.endList;return s&&n&&(r=e.end(e.length-1)+3*i.targetDuration),t>r}},{key:"beforeSeekableWindow_",value:function(e,t){return!!(e.length&&e.start(0)>0&&t2)return{start:r,end:s}}return null}}]),e}(),ed={errorInterval:30,getSource:function(e){return e(this.tech({IWillNotUseThisInPlugins:!0}).currentSource_)}},td=function(e){!function e(t,i){var n=0,r=0,s=Il.mergeOptions(ed,i);t.ready((function(){t.trigger({type:"usage",name:"hls-error-reload-initialized"})}));var a=function(){r&&t.currentTime(r)},o=function(e){null!=e&&(r=t.duration()!==1/0&&t.currentTime()||0,t.one("loadedmetadata",a),t.src(e),t.trigger({type:"usage",name:"hls-error-reload"}),t.play())},u=function(){if(Date.now()-n<1e3*s.errorInterval)t.trigger({type:"usage",name:"hls-error-reload-canceled"});else{if(s.getSource&&"function"==typeof s.getSource)return n=Date.now(),s.getSource.call(t,o);Il.log.error("ERROR: reloadSourceOnError - The option getSource must be a function!")}},l=function e(){t.off("loadedmetadata",a),t.off("error",u),t.off("dispose",e)};t.on("error",u),t.on("dispose",l),t.reloadSourceOnError=function(i){l(),e(t,i)}}(this,e)},id={PlaylistLoader:Xl,Playlist:cc,Decrypter:Pr,AsyncStream:xr,decrypt:Ir,utils:Sc,STANDARD_PLAYLIST_SELECTOR:function(){var e=this.useDevicePixelRatio&&K.devicePixelRatio||1;return function(e,t,i,n,r){var s=e.playlists.map((function(e){var t,i;return t=e.attributes.RESOLUTION&&e.attributes.RESOLUTION.width,i=e.attributes.RESOLUTION&&e.attributes.RESOLUTION.height,{bandwidth:e.attributes.BANDWIDTH||K.Number.MAX_VALUE,width:t,height:i,playlist:e}}));Eh(s,(function(e,t){return e.bandwidth-t.bandwidth}));var a=(s=s.filter((function(e){return!cc.isIncompatible(e.playlist)}))).filter((function(e){return cc.isEnabled(e.playlist)}));a.length||(a=s.filter((function(e){return!cc.isDisabled(e.playlist)})));var o=a.filter((function(e){return e.bandwidth*gh.BANDWIDTH_VARIANCEi||e.height>n}))).filter((function(e){return e.width===f[0].width&&e.height===f[0].height})),u=m[m.length-1],g=m.filter((function(e){return e.bandwidth===u.bandwidth}))[0]);var v=g||p||l||a[0]||s[0];return v?v.playlist:null}(this.playlists.master,this.systemBandwidth,parseInt(wh(this.tech_.el(),"width"),10)*e,parseInt(wh(this.tech_.el(),"height"),10)*e,this.limitRenditionByPlayerDimensions)},INITIAL_PLAYLIST_SELECTOR:function(){var e=this.playlists.master.playlists.filter(cc.isEnabled);return Eh(e,(function(e,t){return xh(e,t)})),e.filter((function(e){return Gc(e.attributes.CODECS).videoCodec}))[0]||null},comparePlaylistBandwidth:xh,comparePlaylistResolution:function(e,t){var i=void 0,n=void 0;return e.attributes.RESOLUTION&&e.attributes.RESOLUTION.width&&(i=e.attributes.RESOLUTION.width),i=i||K.Number.MAX_VALUE,t.attributes.RESOLUTION&&t.attributes.RESOLUTION.width&&(n=t.attributes.RESOLUTION.width),i===(n=n||K.Number.MAX_VALUE)&&e.attributes.BANDWIDTH&&t.attributes.BANDWIDTH?e.attributes.BANDWIDTH-t.attributes.BANDWIDTH:i-n},xhr:pc()};["GOAL_BUFFER_LENGTH","MAX_GOAL_BUFFER_LENGTH","GOAL_BUFFER_LENGTH_RATE","BUFFER_LOW_WATER_LINE","MAX_BUFFER_LOW_WATER_LINE","BUFFER_LOW_WATER_LINE_RATE","BANDWIDTH_VARIANCE"].forEach((function(e){Object.defineProperty(id,e,{get:function(){return Il.log.warn("using Hls."+e+" is UNSAFE be sure you know what you are doing"),gh[e]},set:function(t){Il.log.warn("using Hls."+e+" is UNSAFE be sure you know what you are doing"),"number"!=typeof t||t<0?Il.log.warn("value of Hls."+e+" must be greater than or equal to 0"):gh[e]=t}})}));var nd=function(e){if(/^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i.test(e))return"hls";return/^application\/dash\+xml/i.test(e)?"dash":null},rd=function(e,t){for(var i=t.media(),n=-1,r=0;r0?1/this.throughput:0,Math.floor(1/(e+t))},set:function(){Il.log.error('The "systemBandwidth" property is read-only')}}}),this.options_.bandwidth&&(this.bandwidth=this.options_.bandwidth),this.options_.throughput&&(this.throughput=this.options_.throughput),Object.defineProperties(this.stats,{bandwidth:{get:function(){return i.bandwidth||0},enumerable:!0},mediaRequests:{get:function(){return i.masterPlaylistController_.mediaRequests_()||0},enumerable:!0},mediaRequestsAborted:{get:function(){return i.masterPlaylistController_.mediaRequestsAborted_()||0},enumerable:!0},mediaRequestsTimedout:{get:function(){return i.masterPlaylistController_.mediaRequestsTimedout_()||0},enumerable:!0},mediaRequestsErrored:{get:function(){return i.masterPlaylistController_.mediaRequestsErrored_()||0},enumerable:!0},mediaTransferDuration:{get:function(){return i.masterPlaylistController_.mediaTransferDuration_()||0},enumerable:!0},mediaBytesTransferred:{get:function(){return i.masterPlaylistController_.mediaBytesTransferred_()||0},enumerable:!0},mediaSecondsLoaded:{get:function(){return i.masterPlaylistController_.mediaSecondsLoaded_()||0},enumerable:!0},buffered:{get:function(){return Ic(i.tech_.buffered())},enumerable:!0},currentTime:{get:function(){return i.tech_.currentTime()},enumerable:!0},currentSource:{get:function(){return i.tech_.currentSource_},enumerable:!0},currentTech:{get:function(){return i.tech_.name_},enumerable:!0},duration:{get:function(){return i.tech_.duration()},enumerable:!0},master:{get:function(){return i.playlists.master},enumerable:!0},playerDimensions:{get:function(){return i.tech_.currentDimensions()},enumerable:!0},seekable:{get:function(){return Ic(i.tech_.seekable())},enumerable:!0},timestamp:{get:function(){return Date.now()},enumerable:!0},videoPlaybackQuality:{get:function(){return i.tech_.getVideoPlaybackQuality()},enumerable:!0}}),this.tech_.one("canplay",this.masterPlaylistController_.setupFirstPlay.bind(this.masterPlaylistController_)),this.tech_.on("bandwidthupdate",(function(){i.options_.useBandwidthFromLocalStorage&&function(e){if(!window.localStorage)return!1;var t=ad();t=t?Il.mergeOptions(t,e):e;try{window.localStorage.setItem("videojs-vhs",JSON.stringify(t))}catch(e){return!1}}({bandwidth:i.bandwidth,throughput:Math.round(i.throughput)})})),this.masterPlaylistController_.on("selectedinitialmedia",(function(){var e,t;t=(e=i).playlists,e.representations=function(){return t&&t.master&&t.master.playlists?t.master.playlists.filter((function(e){return!ac(e)})).map((function(t,i){return new Qh(e,t,t.id)})):[]},sd(i)})),this.on(this.masterPlaylistController_,"progress",(function(){this.tech_.trigger("progress")})),this.on(this.masterPlaylistController_,"firstplay",(function(){this.ignoreNextSeekingEvent_=!0})),this.setupQualityLevels_(),this.tech_.el()&&this.tech_.src(Il.URL.createObjectURL(this.masterPlaylistController_.mediaSource)))}},{key:"setupQualityLevels_",value:function(){var e=this,t=Il.players[this.tech_.options_.playerId];t&&t.qualityLevels&&!this.qualityLevels_&&(this.qualityLevels_=t.qualityLevels(),this.masterPlaylistController_.on("selectedinitialmedia",(function(){var t,i;t=e.qualityLevels_,(i=e).representations().forEach((function(e){t.addQualityLevel(e)})),rd(t,i.playlists)})),this.playlists.on("mediachange",(function(){rd(e.qualityLevels_,e.playlists)})))}},{key:"play",value:function(){this.masterPlaylistController_.play()}},{key:"setCurrentTime",value:function(e){this.masterPlaylistController_.setCurrentTime(e)}},{key:"duration",value:function(){return this.masterPlaylistController_.duration()}},{key:"seekable",value:function(){return this.masterPlaylistController_.seekable()}},{key:"dispose",value:function(){this.playbackWatcher_&&this.playbackWatcher_.dispose(),this.masterPlaylistController_&&this.masterPlaylistController_.dispose(),this.qualityLevels_&&this.qualityLevels_.dispose(),this.player_&&(delete this.player_.vhs,delete this.player_.dash,delete this.player_.hls),this.tech_&&this.tech_.hls&&delete this.tech_.hls,function e(t,i,n){null===t&&(t=Function.prototype);var r=Object.getOwnPropertyDescriptor(t,i);if(void 0===r){var s=Object.getPrototypeOf(t);return null===s?void 0:e(s,i,n)}if("value"in r)return r.value;var a=r.get;return void 0!==a?a.call(n):void 0}(t.prototype.__proto__||Object.getPrototypeOf(t.prototype),"dispose",this).call(this)}},{key:"convertToProgramTime",value:function(e,t){return kc({playlist:this.masterPlaylistController_.media(),time:e,callback:t})}},{key:"seekToProgramTime",value:function(e,t){var i=!(arguments.length>2&&void 0!==arguments[2])||arguments[2],n=arguments.length>3&&void 0!==arguments[3]?arguments[3]:2;return Cc({programTime:e,playlist:this.masterPlaylistController_.media(),retryCount:n,pauseAfterSeek:i,seekTo:this.options_.seekTo,tech:this.options_.tech,callback:t})}}]),t}(Il.getComponent("Component")),ud={name:"videojs-http-streaming",VERSION:"1.13.2",canHandleSource:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},i=Il.mergeOptions(Il.options,t);return ud.canPlayType(e.type,i)},handleSource:function(e,t){var i=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},n=Il.mergeOptions(Il.options,i);return t.hls=new od(e,t,n),t.hls.xhr=pc(),t.hls.src(e.src,e.type),t.hls},canPlayType:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},i=Il.mergeOptions(Il.options,t),n=i.hls.overrideNative,r=nd(e),s=r&&(!id.supportsTypeNatively(r)||n);return s?"maybe":""}};function ld(t){let i,n,r,s,a,g,v,y,_,b,T,S,k,C,w;return{c(){i=c("div"),n=c("div"),r=c("div"),s=c("div"),a=d(),g=c("div"),v=h(t[1]),y=d(),_=c("video"),b=c("source"),f(s,"class","overlay"),f(g,"class","title"),b.src!==(T=t[0])&&f(b,"src",T),f(b,"type","application/x-mpegURL"),f(_,"id",t[2]),f(_,"class","video-js vjs-16-9"),_.autoplay=!0,_.muted=!0,f(_,"preload","auto"),f(_,"data-setup",S=JSON.stringify(t[4])),f(r,"class",k="stream live "+t[3]),f(n,"class","wrapper"),f(i,"class","quarter")},m(e,l){u(e,i,l),o(i,n),o(n,r),o(r,s),o(r,a),o(r,g),o(g,v),o(r,y),o(r,_),o(_,b),C||(w=p(i,"click",t[5]),C=!0)},p(e,[t]){2&t&&m(v,e[1]),1&t&&b.src!==(T=e[0])&&f(b,"src",T),4&t&&f(_,"id",e[2]),8&t&&k!==(k="stream live "+e[3])&&f(r,"class",k)},i:e,o:e,d(e){e&&l(i),C=!1,w()}}}function cd(e,t,i){let{id:n}=t,{src:r}=t,{title:s}=t,a="",o="";let u;return y(()=>{try{u=Il(a)}catch(e){console.log(e)}F.subscribe(e=>{i(3,o=""!==a&&e===a?"active":""),u&&(console.log(a+" - mute"),u.muted(!0),o&&(console.log(a+" - unmute"),u.muted(!1)))}),console.log(`mounted ${a} player`)}),e.$set=e=>{"id"in e&&i(6,n=e.id),"src"in e&&i(0,r=e.src),"title"in e&&i(1,s=e.title)},e.$$.update=()=>{64&e.$$.dirty&&i(2,a=n+"-live")},[r,s,a,o,{youtube:{ytControls:0}},function(){H.setPlaying(a)},n]}void 0!==Il.MediaSource&&void 0!==Il.URL||(Il.MediaSource=rh,Il.URL=sh),rh.supportsNativeMediaSources()&&Il.getTech("Html5").registerSourceHandler(ud,0),Il.HlsHandler=od,Il.HlsSourceHandler=ud,Il.Hls=id,Il.use||Il.registerComponent("Hls",id),Il.options.hls=Il.options.hls||{},Il.registerPlugin?Il.registerPlugin("reloadSourceOnError",td):Il.plugin("reloadSourceOnError",td);class hd extends B{constructor(e){super(),M(this,e,cd,ld,s,{id:6,src:0,title:1})}}function dd(t){let i,n,r,s,a,g,v,y,_,b;return{c(){i=c("div"),n=c("div"),r=c("div"),s=c("div"),a=d(),g=c("div"),v=h(t[0]),f(s,"class","overlay"),f(g,"class","title"),f(r,"class",y="stream live twitch 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t,i,n,r,s,a,p,g,v,y,_;const b=new W({props:{title:"Sky News",id:"skynews",src:"https://www.youtube.com/embed/9Auq9mYxFEE?enablejsapi=1&autoplay=1&mute=1&controls=0&fs=0&modestbranding=1&cc_load_policy=1"}}),T=new hd({props:{title:"BBC News",id:"bbc",src:"https://a.files.bbci.co.uk/media/live/manifesto/audio_video/simulcast/hls/uk/abr_hdtv/ak/bbc_news24.m3u8"}}),S=new W({props:{title:"EuroNews",id:"euronews",src:"https://www.youtube.com/embed/6xrJy-1_qS4?enablejsapi=1&autoplay=1&mute=1&controls=0&fs=0&modestbranding=1&cc_load_policy=1"}}),k=new fd({props:{title:"twitch.tv/rukpolitics",id:"rukpolitics",channel:"rukpolitics"}}),C=new fd({props:{title:"twitch.tv/ukcommons",id:"ukcommons",channel:"ukcommons"}}),w=new fd({props:{title:"twitch.tv/democracylive",id:"democracylive",channel:"democracylive"}});return{c(){t=c("div"),i=h("Playing:"),n=h(e[0]),r=d(),s=c("div"),D(b.$$.fragment),a=d(),D(T.$$.fragment),p=d(),D(S.$$.fragment),g=d(),D(k.$$.fragment),v=d(),D(C.$$.fragment),y=d(),D(w.$$.fragment),f(s,"id","container")},m(e,l){u(e,t,l),o(t,i),o(t,n),u(e,r,l),u(e,s,l),N(b,s,null),o(s,a),N(T,s,null),o(s,p),N(S,s,null),o(s,g),N(k,s,null),o(s,v),N(C,s,null),o(s,y),N(w,s,null),_=!0},p(e,[t]){(!_||1&t)&&m(n,e[0])},i(e){_||(L(b.$$.fragment,e),L(T.$$.fragment,e),L(S.$$.fragment,e),L(k.$$.fragment,e),L(C.$$.fragment,e),L(w.$$.fragment,e),_=!0)},o(e){O(b.$$.fragment,e),O(T.$$.fragment,e),O(S.$$.fragment,e),O(k.$$.fragment,e),O(C.$$.fragment,e),O(w.$$.fragment,e),_=!1},d(e){e&&l(t),e&&l(r),e&&l(s),R(b),R(T),R(S),R(k),R(C),R(w)}}}function gd(e,t,i){let n;return a(e,F,e=>i(0,n=e)),[n]}const vd=new class extends B{constructor(e){super(),M(this,e,gd,md,s,{})}}({target:document.body,props:{}});return"serviceWorker"in navigator&&(navigator.serviceWorker.ready.then((function(e){console.warn("Ready??",e)})),window.addEventListener("load",(function(){navigator.serviceWorker.register("./service-worker.js").then(e=>{console.warn("Service Worker Registered",e.scope)}).catch(e=>{console.error("Registration failed with "+e)})}))),vd}(); diff --git a/public/build/bundle.js.map b/public/build/bundle.js.map index 5c2114e..4f3bd58 100644 --- a/public/build/bundle.js.map +++ b/public/build/bundle.js.map @@ -1 +1 @@ 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subscribe(store, ...callbacks) {\n if (store == null) {\n return noop;\n }\n const unsub = store.subscribe(...callbacks);\n return unsub.unsubscribe ? 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'' : value;\n}\nfunction set_input_type(input, type) {\n try {\n input.type = type;\n }\n catch (e) {\n // do nothing\n }\n}\nfunction set_style(node, key, value, important) {\n node.style.setProperty(key, value, important ? 'important' : '');\n}\nfunction select_option(select, value) {\n for (let i = 0; i < select.options.length; i += 1) {\n const option = select.options[i];\n if (option.__value === value) {\n option.selected = true;\n return;\n }\n }\n}\nfunction select_options(select, value) {\n for (let i = 0; i < select.options.length; i += 1) {\n const option = select.options[i];\n option.selected = ~value.indexOf(option.__value);\n }\n}\nfunction select_value(select) {\n const selected_option = select.querySelector(':checked') || select.options[0];\n return selected_option && selected_option.__value;\n}\nfunction select_multiple_value(select) {\n return [].map.call(select.querySelectorAll(':checked'), option => option.__value);\n}\n// unfortunately this can't be a constant as that wouldn't be tree-shakeable\n// so we cache the result instead\nlet crossorigin;\nfunction is_crossorigin() {\n if (crossorigin === undefined) {\n crossorigin = false;\n try {\n if (typeof window !== 'undefined' && window.parent) {\n void window.parent.document;\n }\n }\n catch (error) {\n crossorigin = true;\n }\n }\n return crossorigin;\n}\nfunction add_resize_listener(node, fn) {\n const computed_style = getComputedStyle(node);\n const z_index = (parseInt(computed_style.zIndex) || 0) - 1;\n if (computed_style.position === 'static') {\n node.style.position = 'relative';\n }\n const iframe = element('iframe');\n iframe.setAttribute('style', `display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; ` +\n `overflow: hidden; border: 0; opacity: 0; pointer-events: none; z-index: ${z_index};`);\n iframe.setAttribute('aria-hidden', 'true');\n iframe.tabIndex = -1;\n const crossorigin = is_crossorigin();\n let unsubscribe;\n if (crossorigin) {\n iframe.src = `data:text/html,`;\n unsubscribe = listen(window, 'message', (event) => {\n if (event.source === iframe.contentWindow)\n fn();\n });\n }\n else {\n iframe.src = 'about:blank';\n iframe.onload = () => {\n unsubscribe = listen(iframe.contentWindow, 'resize', fn);\n };\n }\n append(node, iframe);\n return () => {\n if (crossorigin) {\n unsubscribe();\n }\n else if (unsubscribe && iframe.contentWindow) {\n unsubscribe();\n }\n detach(iframe);\n };\n}\nfunction toggle_class(element, name, toggle) {\n element.classList[toggle ? 'add' : 'remove'](name);\n}\nfunction custom_event(type, detail) {\n const e = document.createEvent('CustomEvent');\n e.initCustomEvent(type, false, false, detail);\n return e;\n}\nfunction query_selector_all(selector, parent = document.body) {\n return Array.from(parent.querySelectorAll(selector));\n}\nclass HtmlTag {\n constructor(anchor = null) {\n this.a = anchor;\n this.e = this.n = null;\n }\n m(html, target, anchor = null) {\n if (!this.e) {\n this.e = element(target.nodeName);\n this.t = target;\n this.h(html);\n }\n this.i(anchor);\n }\n h(html) {\n this.e.innerHTML = html;\n this.n = Array.from(this.e.childNodes);\n }\n i(anchor) {\n for (let i = 0; i < this.n.length; i += 1) {\n insert(this.t, this.n[i], anchor);\n }\n }\n p(html) {\n this.d();\n this.h(html);\n this.i(this.a);\n }\n d() {\n this.n.forEach(detach);\n }\n}\n\nconst active_docs = new Set();\nlet active = 0;\n// https://github.com/darkskyapp/string-hash/blob/master/index.js\nfunction hash(str) {\n let hash = 5381;\n let i = str.length;\n while (i--)\n hash = ((hash << 5) - hash) ^ str.charCodeAt(i);\n return hash >>> 0;\n}\nfunction create_rule(node, a, b, duration, delay, ease, fn, uid = 0) {\n const step = 16.666 / duration;\n let keyframes = '{\\n';\n for (let p = 0; p <= 1; p += step) {\n const t = a + (b - a) * ease(p);\n keyframes += p * 100 + `%{${fn(t, 1 - t)}}\\n`;\n }\n const rule = keyframes + `100% {${fn(b, 1 - b)}}\\n}`;\n const name = `__svelte_${hash(rule)}_${uid}`;\n const doc = node.ownerDocument;\n active_docs.add(doc);\n const stylesheet = doc.__svelte_stylesheet || (doc.__svelte_stylesheet = doc.head.appendChild(element('style')).sheet);\n const current_rules = doc.__svelte_rules || (doc.__svelte_rules = {});\n if (!current_rules[name]) {\n current_rules[name] = true;\n stylesheet.insertRule(`@keyframes ${name} ${rule}`, stylesheet.cssRules.length);\n }\n const animation = node.style.animation || '';\n node.style.animation = `${animation ? `${animation}, ` : ``}${name} ${duration}ms linear ${delay}ms 1 both`;\n active += 1;\n return name;\n}\nfunction delete_rule(node, name) {\n const previous = (node.style.animation || '').split(', ');\n const next = previous.filter(name\n ? anim => anim.indexOf(name) < 0 // remove specific animation\n : anim => anim.indexOf('__svelte') === -1 // remove all Svelte animations\n );\n const deleted = previous.length - next.length;\n if (deleted) {\n node.style.animation = next.join(', ');\n active -= deleted;\n if (!active)\n clear_rules();\n }\n}\nfunction clear_rules() {\n raf(() => {\n if (active)\n return;\n active_docs.forEach(doc => {\n const stylesheet = doc.__svelte_stylesheet;\n let i = stylesheet.cssRules.length;\n while (i--)\n stylesheet.deleteRule(i);\n doc.__svelte_rules = {};\n });\n active_docs.clear();\n });\n}\n\nfunction create_animation(node, from, fn, params) {\n if (!from)\n return noop;\n const to = node.getBoundingClientRect();\n if (from.left === to.left && from.right === to.right && from.top === to.top && from.bottom === to.bottom)\n return noop;\n const { delay = 0, duration = 300, easing = identity, \n // @ts-ignore todo: should this be separated from destructuring? Or start/end added to public api and documentation?\n start: start_time = now() + delay, \n // @ts-ignore todo:\n end = start_time + duration, tick = noop, css } = fn(node, { from, to }, params);\n let running = true;\n let started = false;\n let name;\n function start() {\n if (css) {\n name = create_rule(node, 0, 1, duration, delay, easing, css);\n }\n if (!delay) {\n started = true;\n }\n }\n function stop() {\n if (css)\n delete_rule(node, name);\n running = false;\n }\n loop(now => {\n if (!started && now >= start_time) {\n started = true;\n }\n if (started && now >= end) {\n tick(1, 0);\n stop();\n }\n if (!running) {\n return false;\n }\n if (started) {\n const p = now - start_time;\n const t = 0 + 1 * easing(p / duration);\n tick(t, 1 - t);\n }\n return true;\n });\n start();\n tick(0, 1);\n return stop;\n}\nfunction fix_position(node) {\n const style = getComputedStyle(node);\n if (style.position !== 'absolute' && style.position !== 'fixed') {\n const { width, height } = style;\n const a = node.getBoundingClientRect();\n node.style.position = 'absolute';\n node.style.width = width;\n node.style.height = height;\n add_transform(node, a);\n }\n}\nfunction add_transform(node, a) {\n const b = node.getBoundingClientRect();\n if (a.left !== b.left || a.top !== b.top) {\n const style = getComputedStyle(node);\n const transform = style.transform === 'none' ? '' : style.transform;\n node.style.transform = `${transform} translate(${a.left - b.left}px, ${a.top - b.top}px)`;\n }\n}\n\nlet current_component;\nfunction set_current_component(component) {\n current_component = component;\n}\nfunction get_current_component() {\n if (!current_component)\n throw new Error(`Function called outside component initialization`);\n return current_component;\n}\nfunction beforeUpdate(fn) {\n get_current_component().$$.before_update.push(fn);\n}\nfunction onMount(fn) {\n get_current_component().$$.on_mount.push(fn);\n}\nfunction afterUpdate(fn) {\n get_current_component().$$.after_update.push(fn);\n}\nfunction onDestroy(fn) {\n get_current_component().$$.on_destroy.push(fn);\n}\nfunction createEventDispatcher() {\n const component = get_current_component();\n return (type, detail) => {\n const callbacks = component.$$.callbacks[type];\n if (callbacks) {\n // TODO are there situations where events could be dispatched\n // in a server (non-DOM) environment?\n const event = custom_event(type, detail);\n callbacks.slice().forEach(fn => {\n fn.call(component, event);\n });\n }\n };\n}\nfunction setContext(key, context) {\n get_current_component().$$.context.set(key, context);\n}\nfunction getContext(key) {\n return get_current_component().$$.context.get(key);\n}\n// TODO figure out if we still want to support\n// shorthand events, or if we want to implement\n// a real bubbling mechanism\nfunction bubble(component, event) {\n const callbacks = component.$$.callbacks[event.type];\n if (callbacks) {\n callbacks.slice().forEach(fn => fn(event));\n }\n}\n\nconst dirty_components = [];\nconst intros = { enabled: false };\nconst binding_callbacks = [];\nconst render_callbacks = [];\nconst flush_callbacks = [];\nconst resolved_promise = Promise.resolve();\nlet update_scheduled = false;\nfunction schedule_update() {\n if (!update_scheduled) {\n update_scheduled = true;\n resolved_promise.then(flush);\n }\n}\nfunction tick() {\n schedule_update();\n return resolved_promise;\n}\nfunction add_render_callback(fn) {\n render_callbacks.push(fn);\n}\nfunction add_flush_callback(fn) {\n flush_callbacks.push(fn);\n}\nlet flushing = false;\nconst seen_callbacks = new Set();\nfunction flush() {\n if (flushing)\n return;\n flushing = true;\n do {\n // first, call beforeUpdate functions\n // and update components\n for (let i = 0; i < dirty_components.length; i += 1) {\n const component = dirty_components[i];\n set_current_component(component);\n update(component.$$);\n }\n dirty_components.length = 0;\n while (binding_callbacks.length)\n binding_callbacks.pop()();\n // then, once components are updated, call\n // afterUpdate functions. This may cause\n // subsequent updates...\n for (let i = 0; i < render_callbacks.length; i += 1) {\n const callback = render_callbacks[i];\n if (!seen_callbacks.has(callback)) {\n // ...so guard against infinite loops\n seen_callbacks.add(callback);\n callback();\n }\n }\n render_callbacks.length = 0;\n } while (dirty_components.length);\n while (flush_callbacks.length) {\n flush_callbacks.pop()();\n }\n update_scheduled = false;\n flushing = false;\n seen_callbacks.clear();\n}\nfunction update($$) {\n if ($$.fragment !== null) {\n $$.update();\n run_all($$.before_update);\n const dirty = $$.dirty;\n $$.dirty = [-1];\n $$.fragment && $$.fragment.p($$.ctx, dirty);\n $$.after_update.forEach(add_render_callback);\n }\n}\n\nlet promise;\nfunction wait() {\n if (!promise) {\n promise = Promise.resolve();\n promise.then(() => {\n promise = null;\n });\n }\n return promise;\n}\nfunction dispatch(node, direction, kind) {\n node.dispatchEvent(custom_event(`${direction ? 'intro' : 'outro'}${kind}`));\n}\nconst outroing = new Set();\nlet outros;\nfunction group_outros() {\n outros = {\n r: 0,\n c: [],\n p: outros // parent group\n };\n}\nfunction check_outros() {\n if (!outros.r) {\n run_all(outros.c);\n }\n outros = outros.p;\n}\nfunction transition_in(block, local) {\n if (block && block.i) {\n outroing.delete(block);\n block.i(local);\n }\n}\nfunction transition_out(block, local, detach, callback) {\n if (block && block.o) {\n if (outroing.has(block))\n return;\n outroing.add(block);\n outros.c.push(() => {\n outroing.delete(block);\n if (callback) {\n if (detach)\n block.d(1);\n callback();\n }\n });\n block.o(local);\n }\n}\nconst null_transition = { duration: 0 };\nfunction create_in_transition(node, fn, params) {\n let config = fn(node, params);\n let running = false;\n let animation_name;\n let task;\n let uid = 0;\n function cleanup() {\n if (animation_name)\n delete_rule(node, animation_name);\n }\n function go() {\n const { delay = 0, duration = 300, easing = identity, tick = noop, css } = config || null_transition;\n if (css)\n animation_name = create_rule(node, 0, 1, duration, delay, easing, css, uid++);\n tick(0, 1);\n const start_time = now() + delay;\n const end_time = start_time + duration;\n if (task)\n task.abort();\n running = true;\n add_render_callback(() => dispatch(node, true, 'start'));\n task = loop(now => {\n if (running) {\n if (now >= end_time) {\n tick(1, 0);\n dispatch(node, true, 'end');\n cleanup();\n return running = false;\n }\n if (now >= start_time) {\n const t = easing((now - start_time) / duration);\n tick(t, 1 - t);\n }\n }\n return running;\n });\n }\n let started = false;\n return {\n start() {\n if (started)\n return;\n delete_rule(node);\n if (is_function(config)) {\n config = config();\n wait().then(go);\n }\n else {\n go();\n }\n },\n invalidate() {\n started = false;\n },\n end() {\n if (running) {\n cleanup();\n running = false;\n }\n }\n };\n}\nfunction create_out_transition(node, fn, params) {\n let config = fn(node, params);\n let running = true;\n let animation_name;\n const group = outros;\n group.r += 1;\n function go() {\n const { delay = 0, duration = 300, easing = identity, tick = noop, css } = config || null_transition;\n if (css)\n animation_name = create_rule(node, 1, 0, duration, delay, easing, css);\n const start_time = now() + delay;\n const end_time = start_time + duration;\n add_render_callback(() => dispatch(node, false, 'start'));\n loop(now => {\n if (running) {\n if (now >= end_time) {\n tick(0, 1);\n dispatch(node, false, 'end');\n if (!--group.r) {\n // this will result in `end()` being called,\n // so we don't need to clean up here\n run_all(group.c);\n }\n return false;\n }\n if (now >= start_time) {\n const t = easing((now - start_time) / duration);\n tick(1 - t, t);\n }\n }\n return running;\n });\n }\n if (is_function(config)) {\n wait().then(() => {\n // @ts-ignore\n config = config();\n go();\n });\n }\n else {\n go();\n }\n return {\n end(reset) {\n if (reset && config.tick) {\n config.tick(1, 0);\n }\n if (running) {\n if (animation_name)\n delete_rule(node, animation_name);\n running = false;\n }\n }\n };\n}\nfunction create_bidirectional_transition(node, fn, params, intro) {\n let config = fn(node, params);\n let t = intro ? 0 : 1;\n let running_program = null;\n let pending_program = null;\n let animation_name = null;\n function clear_animation() {\n if (animation_name)\n delete_rule(node, animation_name);\n }\n function init(program, duration) {\n const d = program.b - t;\n duration *= Math.abs(d);\n return {\n a: t,\n b: program.b,\n d,\n duration,\n start: program.start,\n end: program.start + duration,\n group: program.group\n };\n }\n function go(b) {\n const { delay = 0, duration = 300, easing = identity, tick = noop, css } = config || null_transition;\n const program = {\n start: now() + delay,\n b\n };\n if (!b) {\n // @ts-ignore todo: improve typings\n program.group = outros;\n outros.r += 1;\n }\n if (running_program) {\n pending_program = program;\n }\n else {\n // if this is an intro, and there's a delay, we need to do\n // an initial tick and/or apply CSS animation immediately\n if (css) {\n clear_animation();\n animation_name = create_rule(node, t, b, duration, delay, easing, css);\n }\n if (b)\n tick(0, 1);\n running_program = init(program, duration);\n add_render_callback(() => dispatch(node, b, 'start'));\n loop(now => {\n if (pending_program && now > pending_program.start) {\n running_program = init(pending_program, duration);\n pending_program = null;\n dispatch(node, running_program.b, 'start');\n if (css) {\n clear_animation();\n animation_name = create_rule(node, t, running_program.b, running_program.duration, 0, easing, config.css);\n }\n }\n if (running_program) {\n if (now >= running_program.end) {\n tick(t = running_program.b, 1 - t);\n dispatch(node, running_program.b, 'end');\n if (!pending_program) {\n // we're done\n if (running_program.b) {\n // intro — we can tidy up immediately\n clear_animation();\n }\n else {\n // outro — needs to be coordinated\n if (!--running_program.group.r)\n run_all(running_program.group.c);\n }\n }\n running_program = null;\n }\n else if (now >= running_program.start) {\n const p = now - running_program.start;\n t = running_program.a + running_program.d * easing(p / running_program.duration);\n tick(t, 1 - t);\n }\n }\n return !!(running_program || pending_program);\n });\n }\n }\n return {\n run(b) {\n if (is_function(config)) {\n wait().then(() => {\n // @ts-ignore\n config = config();\n go(b);\n });\n }\n else {\n go(b);\n }\n },\n end() {\n clear_animation();\n running_program = pending_program = null;\n }\n };\n}\n\nfunction handle_promise(promise, info) {\n const token = info.token = {};\n function update(type, index, key, value) {\n if (info.token !== token)\n return;\n info.resolved = value;\n let child_ctx = info.ctx;\n if (key !== undefined) {\n child_ctx = child_ctx.slice();\n child_ctx[key] = value;\n }\n const block = type && (info.current = type)(child_ctx);\n let needs_flush = false;\n if (info.block) {\n if (info.blocks) {\n info.blocks.forEach((block, i) => {\n if (i !== index && block) {\n group_outros();\n transition_out(block, 1, 1, () => {\n info.blocks[i] = null;\n });\n check_outros();\n }\n });\n }\n else {\n info.block.d(1);\n }\n block.c();\n transition_in(block, 1);\n block.m(info.mount(), info.anchor);\n needs_flush = true;\n }\n info.block = block;\n if (info.blocks)\n info.blocks[index] = block;\n if (needs_flush) {\n flush();\n }\n }\n if (is_promise(promise)) {\n const current_component = get_current_component();\n promise.then(value => {\n set_current_component(current_component);\n update(info.then, 1, info.value, value);\n set_current_component(null);\n }, error => {\n set_current_component(current_component);\n update(info.catch, 2, info.error, error);\n set_current_component(null);\n });\n // if we previously had a then/catch block, destroy it\n if (info.current !== info.pending) {\n update(info.pending, 0);\n return true;\n }\n }\n else {\n if (info.current !== info.then) {\n update(info.then, 1, info.value, promise);\n return true;\n }\n info.resolved = promise;\n }\n}\n\nconst globals = (typeof window !== 'undefined'\n ? window\n : typeof globalThis !== 'undefined'\n ? globalThis\n : global);\n\nfunction destroy_block(block, lookup) {\n block.d(1);\n lookup.delete(block.key);\n}\nfunction outro_and_destroy_block(block, lookup) {\n transition_out(block, 1, 1, () => {\n lookup.delete(block.key);\n });\n}\nfunction fix_and_destroy_block(block, lookup) {\n block.f();\n destroy_block(block, lookup);\n}\nfunction fix_and_outro_and_destroy_block(block, lookup) {\n block.f();\n outro_and_destroy_block(block, lookup);\n}\nfunction update_keyed_each(old_blocks, dirty, get_key, dynamic, ctx, list, lookup, node, destroy, create_each_block, next, get_context) {\n let o = old_blocks.length;\n let n = list.length;\n let i = o;\n const old_indexes = {};\n while (i--)\n old_indexes[old_blocks[i].key] = i;\n const new_blocks = [];\n const new_lookup = new Map();\n const deltas = new Map();\n i = n;\n while (i--) {\n const child_ctx = get_context(ctx, list, i);\n const key = get_key(child_ctx);\n let block = lookup.get(key);\n if (!block) {\n block = create_each_block(key, child_ctx);\n block.c();\n }\n else if (dynamic) {\n block.p(child_ctx, dirty);\n }\n new_lookup.set(key, new_blocks[i] = block);\n if (key in old_indexes)\n deltas.set(key, Math.abs(i - old_indexes[key]));\n }\n const will_move = new Set();\n const did_move = new Set();\n function insert(block) {\n transition_in(block, 1);\n block.m(node, next);\n lookup.set(block.key, block);\n next = block.first;\n n--;\n }\n while (o && n) {\n const new_block = new_blocks[n - 1];\n const old_block = old_blocks[o - 1];\n const new_key = new_block.key;\n const old_key = old_block.key;\n if (new_block === old_block) {\n // do nothing\n next = new_block.first;\n o--;\n n--;\n }\n else if (!new_lookup.has(old_key)) {\n // remove old block\n destroy(old_block, lookup);\n o--;\n }\n else if (!lookup.has(new_key) || will_move.has(new_key)) {\n insert(new_block);\n }\n else if (did_move.has(old_key)) {\n o--;\n }\n else if (deltas.get(new_key) > deltas.get(old_key)) {\n did_move.add(new_key);\n insert(new_block);\n }\n else {\n will_move.add(old_key);\n o--;\n }\n }\n while (o--) {\n const old_block = old_blocks[o];\n if (!new_lookup.has(old_block.key))\n destroy(old_block, lookup);\n }\n while (n)\n insert(new_blocks[n - 1]);\n return new_blocks;\n}\nfunction validate_each_keys(ctx, list, get_context, get_key) {\n const keys = new Set();\n for (let i = 0; i < list.length; i++) {\n const key = get_key(get_context(ctx, list, i));\n if (keys.has(key)) {\n throw new Error(`Cannot have duplicate keys in a keyed each`);\n }\n keys.add(key);\n }\n}\n\nfunction get_spread_update(levels, updates) {\n const update = {};\n const to_null_out = {};\n const accounted_for = { $$scope: 1 };\n let i = levels.length;\n while (i--) {\n const o = levels[i];\n const n = updates[i];\n if (n) {\n for (const key in o) {\n if (!(key in n))\n to_null_out[key] = 1;\n }\n for (const key in n) {\n if (!accounted_for[key]) {\n update[key] = n[key];\n accounted_for[key] = 1;\n }\n }\n levels[i] = n;\n }\n else {\n for (const key in o) {\n accounted_for[key] = 1;\n }\n }\n }\n for (const key in to_null_out) {\n if (!(key in update))\n update[key] = undefined;\n }\n return update;\n}\nfunction get_spread_object(spread_props) {\n return typeof spread_props === 'object' && spread_props !== null ? spread_props : {};\n}\n\n// source: https://html.spec.whatwg.org/multipage/indices.html\nconst boolean_attributes = new Set([\n 'allowfullscreen',\n 'allowpaymentrequest',\n 'async',\n 'autofocus',\n 'autoplay',\n 'checked',\n 'controls',\n 'default',\n 'defer',\n 'disabled',\n 'formnovalidate',\n 'hidden',\n 'ismap',\n 'loop',\n 'multiple',\n 'muted',\n 'nomodule',\n 'novalidate',\n 'open',\n 'playsinline',\n 'readonly',\n 'required',\n 'reversed',\n 'selected'\n]);\n\nconst invalid_attribute_name_character = /[\\s'\">/=\\u{FDD0}-\\u{FDEF}\\u{FFFE}\\u{FFFF}\\u{1FFFE}\\u{1FFFF}\\u{2FFFE}\\u{2FFFF}\\u{3FFFE}\\u{3FFFF}\\u{4FFFE}\\u{4FFFF}\\u{5FFFE}\\u{5FFFF}\\u{6FFFE}\\u{6FFFF}\\u{7FFFE}\\u{7FFFF}\\u{8FFFE}\\u{8FFFF}\\u{9FFFE}\\u{9FFFF}\\u{AFFFE}\\u{AFFFF}\\u{BFFFE}\\u{BFFFF}\\u{CFFFE}\\u{CFFFF}\\u{DFFFE}\\u{DFFFF}\\u{EFFFE}\\u{EFFFF}\\u{FFFFE}\\u{FFFFF}\\u{10FFFE}\\u{10FFFF}]/u;\n// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n// https://infra.spec.whatwg.org/#noncharacter\nfunction spread(args, classes_to_add) {\n const attributes = Object.assign({}, ...args);\n if (classes_to_add) {\n if (attributes.class == null) {\n attributes.class = classes_to_add;\n }\n else {\n attributes.class += ' ' + classes_to_add;\n }\n }\n let str = '';\n Object.keys(attributes).forEach(name => {\n if (invalid_attribute_name_character.test(name))\n return;\n const value = attributes[name];\n if (value === true)\n str += \" \" + name;\n else if (boolean_attributes.has(name.toLowerCase())) {\n if (value)\n str += \" \" + name;\n }\n else if (value != null) {\n str += ` ${name}=\"${String(value).replace(/\"/g, '"').replace(/'/g, ''')}\"`;\n }\n });\n return str;\n}\nconst escaped = {\n '\"': '"',\n \"'\": ''',\n '&': '&',\n '<': '<',\n '>': '>'\n};\nfunction escape(html) {\n return String(html).replace(/[\"'&<>]/g, match => escaped[match]);\n}\nfunction each(items, fn) {\n let str = '';\n for (let i = 0; i < items.length; i += 1) {\n str += fn(items[i], i);\n }\n return str;\n}\nconst missing_component = {\n $$render: () => ''\n};\nfunction validate_component(component, name) {\n if (!component || !component.$$render) {\n if (name === 'svelte:component')\n name += ' this={...}';\n throw new Error(`<${name}> is not a valid SSR component. You may need to review your build config to ensure that dependencies are compiled, rather than imported as pre-compiled modules`);\n }\n return component;\n}\nfunction debug(file, line, column, values) {\n console.log(`{@debug} ${file ? file + ' ' : ''}(${line}:${column})`); // eslint-disable-line no-console\n console.log(values); // eslint-disable-line no-console\n return '';\n}\nlet on_destroy;\nfunction create_ssr_component(fn) {\n function $$render(result, props, bindings, slots) {\n const parent_component = current_component;\n const $$ = {\n on_destroy,\n context: new Map(parent_component ? parent_component.$$.context : []),\n // these will be immediately discarded\n on_mount: [],\n before_update: [],\n after_update: [],\n callbacks: blank_object()\n };\n set_current_component({ $$ });\n const html = fn(result, props, bindings, slots);\n set_current_component(parent_component);\n return html;\n }\n return {\n render: (props = {}, options = {}) => {\n on_destroy = [];\n const result = { title: '', head: '', css: new Set() };\n const html = $$render(result, props, {}, options);\n run_all(on_destroy);\n return {\n html,\n css: {\n code: Array.from(result.css).map(css => css.code).join('\\n'),\n map: null // TODO\n },\n head: result.title + result.head\n };\n },\n $$render\n };\n}\nfunction add_attribute(name, value, boolean) {\n if (value == null || (boolean && !value))\n return '';\n return ` ${name}${value === true ? '' : `=${typeof value === 'string' ? JSON.stringify(escape(value)) : `\"${value}\"`}`}`;\n}\nfunction add_classes(classes) {\n return classes ? ` class=\"${classes}\"` : ``;\n}\n\nfunction bind(component, name, callback) {\n const index = component.$$.props[name];\n if (index !== undefined) {\n component.$$.bound[index] = callback;\n callback(component.$$.ctx[index]);\n }\n}\nfunction create_component(block) {\n block && block.c();\n}\nfunction claim_component(block, parent_nodes) {\n block && block.l(parent_nodes);\n}\nfunction mount_component(component, target, anchor) {\n const { fragment, on_mount, on_destroy, after_update } = component.$$;\n fragment && fragment.m(target, anchor);\n // onMount happens before the initial afterUpdate\n add_render_callback(() => {\n const new_on_destroy = on_mount.map(run).filter(is_function);\n if (on_destroy) {\n on_destroy.push(...new_on_destroy);\n }\n else {\n // Edge case - component was destroyed immediately,\n // most likely as a result of a binding initialising\n run_all(new_on_destroy);\n }\n component.$$.on_mount = [];\n });\n after_update.forEach(add_render_callback);\n}\nfunction destroy_component(component, detaching) {\n const $$ = component.$$;\n if ($$.fragment !== null) {\n run_all($$.on_destroy);\n $$.fragment && $$.fragment.d(detaching);\n // TODO null out other refs, including component.$$ (but need to\n // preserve final state?)\n $$.on_destroy = $$.fragment = null;\n $$.ctx = [];\n }\n}\nfunction make_dirty(component, i) {\n if (component.$$.dirty[0] === -1) {\n dirty_components.push(component);\n schedule_update();\n component.$$.dirty.fill(0);\n }\n component.$$.dirty[(i / 31) | 0] |= (1 << (i % 31));\n}\nfunction init(component, options, instance, create_fragment, not_equal, props, dirty = [-1]) {\n const parent_component = current_component;\n set_current_component(component);\n const prop_values = options.props || {};\n const $$ = component.$$ = {\n fragment: null,\n ctx: null,\n // state\n props,\n update: noop,\n not_equal,\n bound: blank_object(),\n // lifecycle\n on_mount: [],\n on_destroy: [],\n before_update: [],\n after_update: [],\n context: new Map(parent_component ? parent_component.$$.context : []),\n // everything else\n callbacks: blank_object(),\n dirty\n };\n let ready = false;\n $$.ctx = instance\n ? instance(component, prop_values, (i, ret, ...rest) => {\n const value = rest.length ? rest[0] : ret;\n if ($$.ctx && not_equal($$.ctx[i], $$.ctx[i] = value)) {\n if ($$.bound[i])\n $$.bound[i](value);\n if (ready)\n make_dirty(component, i);\n }\n return ret;\n })\n : [];\n $$.update();\n ready = true;\n run_all($$.before_update);\n // `false` as a special case of no DOM component\n $$.fragment = create_fragment ? create_fragment($$.ctx) : false;\n if (options.target) {\n if (options.hydrate) {\n const nodes = children(options.target);\n // eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n $$.fragment && $$.fragment.l(nodes);\n nodes.forEach(detach);\n }\n else {\n // eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n $$.fragment && $$.fragment.c();\n }\n if (options.intro)\n transition_in(component.$$.fragment);\n mount_component(component, options.target, options.anchor);\n flush();\n }\n set_current_component(parent_component);\n}\nlet SvelteElement;\nif (typeof HTMLElement === 'function') {\n SvelteElement = class extends HTMLElement {\n constructor() {\n super();\n this.attachShadow({ mode: 'open' });\n }\n connectedCallback() {\n // @ts-ignore todo: improve typings\n for (const key in this.$$.slotted) {\n // @ts-ignore todo: improve typings\n this.appendChild(this.$$.slotted[key]);\n }\n }\n attributeChangedCallback(attr, _oldValue, newValue) {\n this[attr] = newValue;\n }\n $destroy() {\n destroy_component(this, 1);\n this.$destroy = noop;\n }\n $on(type, callback) {\n // TODO should this delegate to addEventListener?\n const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));\n callbacks.push(callback);\n return () => {\n const index = callbacks.indexOf(callback);\n if (index !== -1)\n callbacks.splice(index, 1);\n };\n }\n $set() {\n // overridden by instance, if it has props\n }\n };\n}\nclass SvelteComponent {\n $destroy() {\n destroy_component(this, 1);\n this.$destroy = noop;\n }\n $on(type, callback) {\n const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));\n callbacks.push(callback);\n return () => {\n const index = callbacks.indexOf(callback);\n if (index !== -1)\n callbacks.splice(index, 1);\n };\n }\n $set() {\n // overridden by instance, if it has props\n }\n}\n\nfunction dispatch_dev(type, detail) {\n document.dispatchEvent(custom_event(type, Object.assign({ version: '3.23.0' }, detail)));\n}\nfunction append_dev(target, node) {\n dispatch_dev(\"SvelteDOMInsert\", { target, node });\n append(target, node);\n}\nfunction insert_dev(target, node, anchor) {\n dispatch_dev(\"SvelteDOMInsert\", { target, node, anchor });\n insert(target, node, anchor);\n}\nfunction detach_dev(node) {\n dispatch_dev(\"SvelteDOMRemove\", { node });\n detach(node);\n}\nfunction detach_between_dev(before, after) {\n while (before.nextSibling && before.nextSibling !== after) {\n detach_dev(before.nextSibling);\n }\n}\nfunction detach_before_dev(after) {\n while (after.previousSibling) {\n detach_dev(after.previousSibling);\n }\n}\nfunction detach_after_dev(before) {\n while (before.nextSibling) {\n detach_dev(before.nextSibling);\n }\n}\nfunction listen_dev(node, event, handler, options, has_prevent_default, has_stop_propagation) {\n const modifiers = options === true ? [\"capture\"] : options ? Array.from(Object.keys(options)) : [];\n if (has_prevent_default)\n modifiers.push('preventDefault');\n if (has_stop_propagation)\n modifiers.push('stopPropagation');\n dispatch_dev(\"SvelteDOMAddEventListener\", { node, event, handler, modifiers });\n const dispose = listen(node, event, handler, options);\n return () => {\n dispatch_dev(\"SvelteDOMRemoveEventListener\", { node, event, handler, modifiers });\n dispose();\n };\n}\nfunction attr_dev(node, attribute, value) {\n attr(node, attribute, value);\n if (value == null)\n dispatch_dev(\"SvelteDOMRemoveAttribute\", { node, attribute });\n else\n dispatch_dev(\"SvelteDOMSetAttribute\", { node, attribute, value });\n}\nfunction prop_dev(node, property, value) {\n node[property] = value;\n dispatch_dev(\"SvelteDOMSetProperty\", { node, property, value });\n}\nfunction dataset_dev(node, property, value) {\n node.dataset[property] = value;\n dispatch_dev(\"SvelteDOMSetDataset\", { node, property, value });\n}\nfunction set_data_dev(text, data) {\n data = '' + data;\n if (text.data === data)\n return;\n dispatch_dev(\"SvelteDOMSetData\", { node: text, data });\n text.data = data;\n}\nfunction validate_each_argument(arg) {\n if (typeof arg !== 'string' && !(arg && typeof arg === 'object' && 'length' in arg)) {\n let msg = '{#each} only iterates over array-like objects.';\n if (typeof Symbol === 'function' && arg && Symbol.iterator in arg) {\n msg += ' You can use a spread to convert this iterable into an array.';\n }\n throw new Error(msg);\n }\n}\nfunction validate_slots(name, slot, keys) {\n for (const slot_key of Object.keys(slot)) {\n if (!~keys.indexOf(slot_key)) {\n console.warn(`<${name}> received an unexpected slot \"${slot_key}\".`);\n }\n }\n}\nclass SvelteComponentDev extends SvelteComponent {\n constructor(options) {\n if (!options || (!options.target && !options.$$inline)) {\n throw new Error(`'target' is a required option`);\n }\n super();\n }\n $destroy() {\n super.$destroy();\n this.$destroy = () => {\n console.warn(`Component was already destroyed`); // eslint-disable-line no-console\n };\n }\n $capture_state() { }\n $inject_state() { }\n}\nfunction loop_guard(timeout) {\n const start = Date.now();\n return () => {\n if (Date.now() - start > timeout) {\n throw new Error(`Infinite loop detected`);\n }\n };\n}\n\nexport { HtmlTag, SvelteComponent, SvelteComponentDev, SvelteElement, action_destroyer, add_attribute, add_classes, add_flush_callback, add_location, add_render_callback, add_resize_listener, add_transform, afterUpdate, append, append_dev, assign, attr, attr_dev, beforeUpdate, bind, binding_callbacks, blank_object, bubble, check_outros, children, claim_component, claim_element, claim_space, claim_text, clear_loops, component_subscribe, compute_rest_props, createEventDispatcher, create_animation, create_bidirectional_transition, create_component, create_in_transition, create_out_transition, create_slot, create_ssr_component, current_component, custom_event, dataset_dev, debug, destroy_block, destroy_component, destroy_each, detach, detach_after_dev, detach_before_dev, detach_between_dev, detach_dev, dirty_components, dispatch_dev, each, element, element_is, empty, escape, escaped, exclude_internal_props, fix_and_destroy_block, fix_and_outro_and_destroy_block, fix_position, flush, getContext, get_binding_group_value, get_current_component, get_slot_changes, get_slot_context, get_spread_object, get_spread_update, get_store_value, globals, group_outros, handle_promise, has_prop, identity, init, insert, insert_dev, intros, invalid_attribute_name_character, is_client, is_crossorigin, is_function, is_promise, listen, listen_dev, loop, loop_guard, missing_component, mount_component, noop, not_equal, now, null_to_empty, object_without_properties, onDestroy, onMount, once, outro_and_destroy_block, prevent_default, prop_dev, query_selector_all, raf, run, run_all, safe_not_equal, schedule_update, select_multiple_value, select_option, select_options, select_value, self, setContext, set_attributes, set_current_component, set_custom_element_data, set_data, set_data_dev, set_input_type, set_input_value, set_now, set_raf, set_store_value, set_style, set_svg_attributes, space, spread, stop_propagation, subscribe, svg_element, text, tick, time_ranges_to_array, to_number, toggle_class, transition_in, transition_out, update_keyed_each, update_slot, validate_component, validate_each_argument, validate_each_keys, validate_slots, validate_store, xlink_attr };\n","import { noop, safe_not_equal, subscribe, run_all, is_function } from '../internal';\nexport { get_store_value as get } from '../internal';\n\nconst subscriber_queue = [];\n/**\n * Creates a `Readable` store that allows reading by subscription.\n * @param value initial value\n * @param {StartStopNotifier}start start and stop notifications for subscriptions\n */\nfunction readable(value, start) {\n return {\n subscribe: writable(value, start).subscribe,\n };\n}\n/**\n * Create a `Writable` store that allows both updating and reading by subscription.\n * @param {*=}value initial value\n * @param {StartStopNotifier=}start start and stop notifications for subscriptions\n */\nfunction writable(value, start = noop) {\n let stop;\n const subscribers = [];\n function set(new_value) {\n if (safe_not_equal(value, new_value)) {\n value = new_value;\n if (stop) { // store is ready\n const run_queue = !subscriber_queue.length;\n for (let i = 0; i < subscribers.length; i += 1) {\n const s = subscribers[i];\n s[1]();\n subscriber_queue.push(s, value);\n }\n if (run_queue) {\n for (let i = 0; i < subscriber_queue.length; i += 2) {\n subscriber_queue[i][0](subscriber_queue[i + 1]);\n }\n subscriber_queue.length = 0;\n }\n }\n }\n }\n function update(fn) {\n set(fn(value));\n }\n function subscribe(run, invalidate = noop) {\n const subscriber = [run, invalidate];\n subscribers.push(subscriber);\n if (subscribers.length === 1) {\n stop = start(set) || noop;\n }\n run(value);\n return () => {\n const index = subscribers.indexOf(subscriber);\n if (index !== -1) {\n subscribers.splice(index, 1);\n }\n if (subscribers.length === 0) {\n stop();\n stop = null;\n }\n };\n }\n return { set, update, subscribe };\n}\nfunction derived(stores, fn, initial_value) {\n const single = !Array.isArray(stores);\n const stores_array = single\n ? [stores]\n : stores;\n const auto = fn.length < 2;\n return readable(initial_value, (set) => {\n let inited = false;\n const values = [];\n let pending = 0;\n let cleanup = noop;\n const sync = () => {\n if (pending) {\n return;\n }\n cleanup();\n const result = fn(single ? values[0] : values, set);\n if (auto) {\n set(result);\n }\n else {\n cleanup = is_function(result) ? result : noop;\n }\n };\n const unsubscribers = stores_array.map((store, i) => subscribe(store, (value) => {\n values[i] = value;\n pending &= ~(1 << i);\n if (inited) {\n sync();\n }\n }, () => {\n pending |= (1 << i);\n }));\n inited = true;\n sync();\n return function stop() {\n run_all(unsubscribers);\n cleanup();\n };\n });\n}\n\nexport { derived, readable, writable };\n","/**\n * Created by WebStorm.\n * User: martin\n * Date: 27/05/2020\n * Time: 10:04\n\n */\n\nimport { writable } from 'svelte/store';\n\nconst Playing = writable('');\n\nconst actions = {\n setPlaying(id) {\n console.log('>> setPlaying', id);\n\n Playing.update((v) => {\n return (v === id) ? '' : id;\n });\n }\n\n};\n\nexport { Playing, actions };\n","\n\n\n\n
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Object.getPrototypeOf : function _getPrototypeOf(o) {\n return o.__proto__ || Object.getPrototypeOf(o);\n };\n return _getPrototypeOf(o);\n}\n\nmodule.exports = _getPrototypeOf;","function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n subClass.__proto__ = superClass;\n}\n\nmodule.exports = _inheritsLoose;","module.exports = SafeParseTuple\n\nfunction SafeParseTuple(obj, reviver) {\n var json\n var error = null\n\n try {\n json = JSON.parse(obj, reviver)\n } catch (err) {\n error = err\n }\n\n return [error, json]\n}\n","// Source: http://jsfiddle.net/vWx8V/\n// http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n/**\n * Conenience method returns corresponding value for given keyName or keyCode.\n *\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Mixed}\n * @api public\n */\n\nfunction keyCode(searchInput) {\n // Keyboard Events\n if (searchInput && 'object' === typeof searchInput) {\n var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode\n if (hasKeyCode) searchInput = hasKeyCode\n }\n\n // Numbers\n if ('number' === typeof searchInput) return names[searchInput]\n\n // Everything else (cast to string)\n var search = String(searchInput)\n\n // check codes\n var foundNamedKey = codes[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // check aliases\n var foundNamedKey = aliases[search.toLowerCase()]\n if (foundNamedKey) return foundNamedKey\n\n // weird character?\n if (search.length === 1) return search.charCodeAt(0)\n\n return undefined\n}\n\n/**\n * Compares a keyboard event with a given keyCode or keyName.\n *\n * @param {Event} event Keyboard event that should be tested\n * @param {Mixed} keyCode {Number} or keyName {String}\n * @return {Boolean}\n * @api public\n */\nkeyCode.isEventKey = function isEventKey(event, nameOrCode) {\n if (event && 'object' === typeof event) {\n var keyCode = event.which || event.keyCode || event.charCode\n if (keyCode === null || keyCode === undefined) { return false; }\n if (typeof nameOrCode === 'string') {\n // check codes\n var foundNamedKey = codes[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n \n // check aliases\n var foundNamedKey = aliases[nameOrCode.toLowerCase()]\n if (foundNamedKey) { return foundNamedKey === keyCode; }\n } else if (typeof nameOrCode === 'number') {\n return nameOrCode === keyCode;\n }\n return false;\n }\n}\n\nexports = module.exports = keyCode;\n\n/**\n * Get by name\n *\n * exports.code['enter'] // => 13\n */\n\nvar codes = exports.code = exports.codes = {\n 'backspace': 8,\n 'tab': 9,\n 'enter': 13,\n 'shift': 16,\n 'ctrl': 17,\n 'alt': 18,\n 'pause/break': 19,\n 'caps lock': 20,\n 'esc': 27,\n 'space': 32,\n 'page up': 33,\n 'page down': 34,\n 'end': 35,\n 'home': 36,\n 'left': 37,\n 'up': 38,\n 'right': 39,\n 'down': 40,\n 'insert': 45,\n 'delete': 46,\n 'command': 91,\n 'left command': 91,\n 'right command': 93,\n 'numpad *': 106,\n 'numpad +': 107,\n 'numpad -': 109,\n 'numpad .': 110,\n 'numpad /': 111,\n 'num lock': 144,\n 'scroll lock': 145,\n 'my computer': 182,\n 'my calculator': 183,\n ';': 186,\n '=': 187,\n ',': 188,\n '-': 189,\n '.': 190,\n '/': 191,\n '`': 192,\n '[': 219,\n '\\\\': 220,\n ']': 221,\n \"'\": 222\n}\n\n// Helper aliases\n\nvar aliases = exports.aliases = {\n 'windows': 91,\n '⇧': 16,\n '⌥': 18,\n '⌃': 17,\n '⌘': 91,\n 'ctl': 17,\n 'control': 17,\n 'option': 18,\n 'pause': 19,\n 'break': 19,\n 'caps': 20,\n 'return': 13,\n 'escape': 27,\n 'spc': 32,\n 'spacebar': 32,\n 'pgup': 33,\n 'pgdn': 34,\n 'ins': 45,\n 'del': 46,\n 'cmd': 91\n}\n\n/*!\n * Programatically add the following\n */\n\n// lower case chars\nfor (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32\n\n// numbers\nfor (var i = 48; i < 58; i++) codes[i - 48] = i\n\n// function keys\nfor (i = 1; i < 13; i++) codes['f'+i] = i + 111\n\n// numpad keys\nfor (i = 0; i < 10; i++) codes['numpad '+i] = i + 96\n\n/**\n * Get by code\n *\n * exports.name[13] // => 'Enter'\n */\n\nvar names = exports.names = exports.title = {} // title for backward compat\n\n// Create reverse mapping\nfor (i in codes) names[codes[i]] = i\n\n// Add aliases\nfor (var alias in aliases) {\n codes[alias] = aliases[alias]\n}\n","var win;\n\nif (typeof window !== \"undefined\") {\n win = window;\n} else if (typeof global !== \"undefined\") {\n win = global;\n} else if (typeof self !== \"undefined\"){\n win = self;\n} else {\n win = {};\n}\n\nmodule.exports = win;\n","module.exports = isFunction\n\nvar toString = Object.prototype.toString\n\nfunction isFunction (fn) {\n if (!fn) {\n return false\n }\n var string = toString.call(fn)\n return string === '[object Function]' ||\n (typeof fn === 'function' && string !== '[object RegExp]') ||\n (typeof window !== 'undefined' &&\n // IE8 and below\n (fn === window.setTimeout ||\n fn === window.alert ||\n fn === window.confirm ||\n fn === window.prompt))\n};\n","\"use strict\";\nvar window = require(\"global/window\")\nvar _extends = require(\"@babel/runtime/helpers/extends\");\nvar isFunction = require('is-function');\n\n/**\n * @license\n * slighly modified parse-headers 2.0.2 \n * Copyright (c) 2014 David Björklund\n * Available under the MIT license\n * \n */\n\nvar parseHeaders = function(headers) {\n var result = {};\n\n if (!headers) {\n return result;\n }\n\n headers.trim().split('\\n').forEach(function(row) {\n var index = row.indexOf(':');\n var key = row.slice(0, index).trim().toLowerCase();\n var value = row.slice(index + 1).trim();\n\n if (typeof(result[key]) === 'undefined') {\n result[key] = value\n } else if (Array.isArray(result[key])) {\n result[key].push(value)\n } else {\n result[key] = [ result[key], value ]\n }\n });\n\n return result;\n};\n\nmodule.exports = createXHR\n// Allow use of default import syntax in TypeScript\nmodule.exports.default = createXHR;\ncreateXHR.XMLHttpRequest = window.XMLHttpRequest || noop\ncreateXHR.XDomainRequest = \"withCredentials\" in (new createXHR.XMLHttpRequest()) ? createXHR.XMLHttpRequest : window.XDomainRequest\n\nforEachArray([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function(method) {\n createXHR[method === \"delete\" ? \"del\" : method] = function(uri, options, callback) {\n options = initParams(uri, options, callback)\n options.method = method.toUpperCase()\n return _createXHR(options)\n }\n})\n\nfunction forEachArray(array, iterator) {\n for (var i = 0; i < array.length; i++) {\n iterator(array[i])\n }\n}\n\nfunction isEmpty(obj){\n for(var i in obj){\n if(obj.hasOwnProperty(i)) return false\n }\n return true\n}\n\nfunction initParams(uri, options, callback) {\n var params = uri\n\n if (isFunction(options)) {\n callback = options\n if (typeof uri === \"string\") {\n params = {uri:uri}\n }\n } else {\n params = _extends({}, options, {uri: uri})\n }\n\n params.callback = callback\n return params\n}\n\nfunction createXHR(uri, options, callback) {\n options = initParams(uri, options, callback)\n return _createXHR(options)\n}\n\nfunction _createXHR(options) {\n if(typeof options.callback === \"undefined\"){\n throw new Error(\"callback argument missing\")\n }\n\n var called = false\n var callback = function cbOnce(err, response, body){\n if(!called){\n called = true\n options.callback(err, response, body)\n }\n }\n\n function readystatechange() {\n if (xhr.readyState === 4) {\n setTimeout(loadFunc, 0)\n }\n }\n\n function getBody() {\n // Chrome with requestType=blob throws errors arround when even testing access to responseText\n var body = undefined\n\n if (xhr.response) {\n body = xhr.response\n } else {\n body = xhr.responseText || getXml(xhr)\n }\n\n if (isJson) {\n try {\n body = JSON.parse(body)\n } catch (e) {}\n }\n\n return body\n }\n\n function errorFunc(evt) {\n clearTimeout(timeoutTimer)\n if(!(evt instanceof Error)){\n evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\") )\n }\n evt.statusCode = 0\n return callback(evt, failureResponse)\n }\n\n // will load the data & process the response in a special response object\n function loadFunc() {\n if (aborted) return\n var status\n clearTimeout(timeoutTimer)\n if(options.useXDR && xhr.status===undefined) {\n //IE8 CORS GET successful response doesn't have a status field, but body is fine\n status = 200\n } else {\n status = (xhr.status === 1223 ? 204 : xhr.status)\n }\n var response = failureResponse\n var err = null\n\n if (status !== 0){\n response = {\n body: getBody(),\n statusCode: status,\n method: method,\n headers: {},\n url: uri,\n rawRequest: xhr\n }\n if(xhr.getAllResponseHeaders){ //remember xhr can in fact be XDR for CORS in IE\n response.headers = parseHeaders(xhr.getAllResponseHeaders())\n }\n } else {\n err = new Error(\"Internal XMLHttpRequest Error\")\n }\n return callback(err, response, response.body)\n }\n\n var xhr = options.xhr || null\n\n if (!xhr) {\n if (options.cors || options.useXDR) {\n xhr = new createXHR.XDomainRequest()\n }else{\n xhr = new createXHR.XMLHttpRequest()\n }\n }\n\n var key\n var aborted\n var uri = xhr.url = options.uri || options.url\n var method = xhr.method = options.method || \"GET\"\n var body = options.body || options.data\n var headers = xhr.headers = options.headers || {}\n var sync = !!options.sync\n var isJson = false\n var timeoutTimer\n var failureResponse = {\n body: undefined,\n headers: {},\n statusCode: 0,\n method: method,\n url: uri,\n rawRequest: xhr\n }\n\n if (\"json\" in options && options.json !== false) {\n isJson = true\n headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\") //Don't override existing accept header declared by user\n if (method !== \"GET\" && method !== \"HEAD\") {\n headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\") //Don't override existing accept header declared by user\n body = JSON.stringify(options.json === true ? body : options.json)\n }\n }\n\n xhr.onreadystatechange = readystatechange\n xhr.onload = loadFunc\n xhr.onerror = errorFunc\n // IE9 must have onprogress be set to a unique function.\n xhr.onprogress = function () {\n // IE must die\n }\n xhr.onabort = function(){\n aborted = true;\n }\n xhr.ontimeout = errorFunc\n xhr.open(method, uri, !sync, options.username, options.password)\n //has to be after open\n if(!sync) {\n xhr.withCredentials = !!options.withCredentials\n }\n // Cannot set timeout with sync request\n // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n if (!sync && options.timeout > 0 ) {\n timeoutTimer = setTimeout(function(){\n if (aborted) return\n aborted = true//IE9 may still call readystatechange\n xhr.abort(\"timeout\")\n var e = new Error(\"XMLHttpRequest timeout\")\n e.code = \"ETIMEDOUT\"\n errorFunc(e)\n }, options.timeout )\n }\n\n if (xhr.setRequestHeader) {\n for(key in headers){\n if(headers.hasOwnProperty(key)){\n xhr.setRequestHeader(key, headers[key])\n }\n }\n } else if (options.headers && !isEmpty(options.headers)) {\n throw new Error(\"Headers cannot be set on an XDomainRequest object\")\n }\n\n if (\"responseType\" in options) {\n xhr.responseType = options.responseType\n }\n\n if (\"beforeSend\" in options &&\n typeof options.beforeSend === \"function\"\n ) {\n options.beforeSend(xhr)\n }\n\n // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n // XMLHttpRequest spec says to pass null as body to indicate no body\n // See https://github.com/naugtur/xhr/issues/100.\n xhr.send(body || null)\n\n return xhr\n\n\n}\n\nfunction getXml(xhr) {\n // xhr.responseXML will throw Exception \"InvalidStateError\" or \"DOMException\"\n // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.\n try {\n if (xhr.responseType === \"document\") {\n return xhr.responseXML\n }\n var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === \"parsererror\"\n if (xhr.responseType === \"\" && !firefoxBugTakenEffect) {\n return xhr.responseXML\n }\n } catch (e) {}\n\n return null\n}\n\nfunction noop() {}\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\nvar document = require('global/document');\n\nvar _objCreate = Object.create || (function() {\n function F() {}\n return function(o) {\n if (arguments.length !== 1) {\n throw new Error('Object.create shim only accepts one parameter.');\n }\n F.prototype = o;\n return new F();\n };\n})();\n\n// Creates a new ParserError object from an errorData object. The errorData\n// object should have default code and message properties. The default message\n// property can be overriden by passing in a message parameter.\n// See ParsingError.Errors below for acceptable errors.\nfunction ParsingError(errorData, message) {\n this.name = \"ParsingError\";\n this.code = errorData.code;\n this.message = message || errorData.message;\n}\nParsingError.prototype = _objCreate(Error.prototype);\nParsingError.prototype.constructor = ParsingError;\n\n// ParsingError metadata for acceptable ParsingErrors.\nParsingError.Errors = {\n BadSignature: {\n code: 0,\n message: \"Malformed WebVTT signature.\"\n },\n BadTimeStamp: {\n code: 1,\n message: \"Malformed time stamp.\"\n }\n};\n\n// Try to parse input as a time stamp.\nfunction parseTimeStamp(input) {\n\n function computeSeconds(h, m, s, f) {\n return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n }\n\n var m = input.match(/^(\\d+):(\\d{1,2})(:\\d{1,2})?\\.(\\d{3})/);\n if (!m) {\n return null;\n }\n\n if (m[3]) {\n // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n } else if (m[1] > 59) {\n // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n // First position is hours as it's over 59.\n return computeSeconds(m[1], m[2], 0, m[4]);\n } else {\n // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n return computeSeconds(0, m[1], m[2], m[4]);\n }\n}\n\n// A settings object holds key/value pairs and will ignore anything but the first\n// assignment to a specific key.\nfunction Settings() {\n this.values = _objCreate(null);\n}\n\nSettings.prototype = {\n // Only accept the first assignment to any key.\n set: function(k, v) {\n if (!this.get(k) && v !== \"\") {\n this.values[k] = v;\n }\n },\n // Return the value for a key, or a default value.\n // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n // a number of possible default values as properties where 'defaultKey' is\n // the key of the property that will be chosen; otherwise it's assumed to be\n // a single value.\n get: function(k, dflt, defaultKey) {\n if (defaultKey) {\n return this.has(k) ? this.values[k] : dflt[defaultKey];\n }\n return this.has(k) ? this.values[k] : dflt;\n },\n // Check whether we have a value for a key.\n has: function(k) {\n return k in this.values;\n },\n // Accept a setting if its one of the given alternatives.\n alt: function(k, v, a) {\n for (var n = 0; n < a.length; ++n) {\n if (v === a[n]) {\n this.set(k, v);\n break;\n }\n }\n },\n // Accept a setting if its a valid (signed) integer.\n integer: function(k, v) {\n if (/^-?\\d+$/.test(v)) { // integer\n this.set(k, parseInt(v, 10));\n }\n },\n // Accept a setting if its a valid percentage.\n percent: function(k, v) {\n var m;\n if ((m = v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/))) {\n v = parseFloat(v);\n if (v >= 0 && v <= 100) {\n this.set(k, v);\n return true;\n }\n }\n return false;\n }\n};\n\n// Helper function to parse input into groups separated by 'groupDelim', and\n// interprete each group as a key/value pair separated by 'keyValueDelim'.\nfunction parseOptions(input, callback, keyValueDelim, groupDelim) {\n var groups = groupDelim ? input.split(groupDelim) : [input];\n for (var i in groups) {\n if (typeof groups[i] !== \"string\") {\n continue;\n }\n var kv = groups[i].split(keyValueDelim);\n if (kv.length !== 2) {\n continue;\n }\n var k = kv[0];\n var v = kv[1];\n callback(k, v);\n }\n}\n\nfunction parseCue(input, cue, regionList) {\n // Remember the original input if we need to throw an error.\n var oInput = input;\n // 4.1 WebVTT timestamp\n function consumeTimeStamp() {\n var ts = parseTimeStamp(input);\n if (ts === null) {\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed timestamp: \" + oInput);\n }\n // Remove time stamp from input.\n input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n return ts;\n }\n\n // 4.4.2 WebVTT cue settings\n function consumeCueSettings(input, cue) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"region\":\n // Find the last region we parsed with the same region id.\n for (var i = regionList.length - 1; i >= 0; i--) {\n if (regionList[i].id === v) {\n settings.set(k, regionList[i].region);\n break;\n }\n }\n break;\n case \"vertical\":\n settings.alt(k, v, [\"rl\", \"lr\"]);\n break;\n case \"line\":\n var vals = v.split(\",\"),\n vals0 = vals[0];\n settings.integer(k, vals0);\n settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n settings.alt(k, vals0, [\"auto\"]);\n if (vals.length === 2) {\n settings.alt(\"lineAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"position\":\n vals = v.split(\",\");\n settings.percent(k, vals[0]);\n if (vals.length === 2) {\n settings.alt(\"positionAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n }\n break;\n case \"size\":\n settings.percent(k, v);\n break;\n case \"align\":\n settings.alt(k, v, [\"start\", \"center\", \"end\", \"left\", \"right\"]);\n break;\n }\n }, /:/, /\\s/);\n\n // Apply default values for any missing fields.\n cue.region = settings.get(\"region\", null);\n cue.vertical = settings.get(\"vertical\", \"\");\n try {\n cue.line = settings.get(\"line\", \"auto\");\n } catch (e) {}\n cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n cue.snapToLines = settings.get(\"snapToLines\", true);\n cue.size = settings.get(\"size\", 100);\n // Safari still uses the old middle value and won't accept center\n try {\n cue.align = settings.get(\"align\", \"center\");\n } catch (e) {\n cue.align = settings.get(\"align\", \"middle\");\n }\n try {\n cue.position = settings.get(\"position\", \"auto\");\n } catch (e) {\n cue.position = settings.get(\"position\", {\n start: 0,\n left: 0,\n center: 50,\n middle: 50,\n end: 100,\n right: 100\n }, cue.align);\n }\n\n\n cue.positionAlign = settings.get(\"positionAlign\", {\n start: \"start\",\n left: \"start\",\n center: \"center\",\n middle: \"center\",\n end: \"end\",\n right: \"end\"\n }, cue.align);\n }\n\n function skipWhitespace() {\n input = input.replace(/^\\s+/, \"\");\n }\n\n // 4.1 WebVTT cue timings.\n skipWhitespace();\n cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n skipWhitespace();\n if (input.substr(0, 3) !== \"-->\") { // (3) next characters must match \"-->\"\n throw new ParsingError(ParsingError.Errors.BadTimeStamp,\n \"Malformed time stamp (time stamps must be separated by '-->'): \" +\n oInput);\n }\n input = input.substr(3);\n skipWhitespace();\n cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n\n // 4.1 WebVTT cue settings list.\n skipWhitespace();\n consumeCueSettings(input, cue);\n}\n\nvar TEXTAREA_ELEMENT = document.createElement(\"textarea\");\n\nvar TAG_NAME = {\n c: \"span\",\n i: \"i\",\n b: \"b\",\n u: \"u\",\n ruby: \"ruby\",\n rt: \"rt\",\n v: \"span\",\n lang: \"span\"\n};\n\n// 5.1 default text color\n// 5.2 default text background color is equivalent to text color with bg_ prefix\nvar DEFAULT_COLOR_CLASS = {\n white: 'rgba(255,255,255,1)',\n lime: 'rgba(0,255,0,1)',\n cyan: 'rgba(0,255,255,1)',\n red: 'rgba(255,0,0,1)',\n yellow: 'rgba(255,255,0,1)',\n magenta: 'rgba(255,0,255,1)',\n blue: 'rgba(0,0,255,1)',\n black: 'rgba(0,0,0,1)'\n};\n\nvar TAG_ANNOTATION = {\n v: \"title\",\n lang: \"lang\"\n};\n\nvar NEEDS_PARENT = {\n rt: \"ruby\"\n};\n\n// Parse content into a document fragment.\nfunction parseContent(window, input) {\n function nextToken() {\n // Check for end-of-string.\n if (!input) {\n return null;\n }\n\n // Consume 'n' characters from the input.\n function consume(result) {\n input = input.substr(result.length);\n return result;\n }\n\n var m = input.match(/^([^<]*)(<[^>]*>?)?/);\n // If there is some text before the next tag, return it, otherwise return\n // the tag.\n return consume(m[1] ? m[1] : m[2]);\n }\n\n function unescape(s) {\n TEXTAREA_ELEMENT.innerHTML = s;\n s = TEXTAREA_ELEMENT.textContent;\n TEXTAREA_ELEMENT.textContent = \"\";\n return s;\n }\n\n function shouldAdd(current, element) {\n return !NEEDS_PARENT[element.localName] ||\n NEEDS_PARENT[element.localName] === current.localName;\n }\n\n // Create an element for this tag.\n function createElement(type, annotation) {\n var tagName = TAG_NAME[type];\n if (!tagName) {\n return null;\n }\n var element = window.document.createElement(tagName);\n var name = TAG_ANNOTATION[type];\n if (name && annotation) {\n element[name] = annotation.trim();\n }\n return element;\n }\n\n var rootDiv = window.document.createElement(\"div\"),\n current = rootDiv,\n t,\n tagStack = [];\n\n while ((t = nextToken()) !== null) {\n if (t[0] === '<') {\n if (t[1] === \"/\") {\n // If the closing tag matches, move back up to the parent node.\n if (tagStack.length &&\n tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n tagStack.pop();\n current = current.parentNode;\n }\n // Otherwise just ignore the end tag.\n continue;\n }\n var ts = parseTimeStamp(t.substr(1, t.length - 2));\n var node;\n if (ts) {\n // Timestamps are lead nodes as well.\n node = window.document.createProcessingInstruction(\"timestamp\", ts);\n current.appendChild(node);\n continue;\n }\n var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/);\n // If we can't parse the tag, skip to the next tag.\n if (!m) {\n continue;\n }\n // Try to construct an element, and ignore the tag if we couldn't.\n node = createElement(m[1], m[3]);\n if (!node) {\n continue;\n }\n // Determine if the tag should be added based on the context of where it\n // is placed in the cuetext.\n if (!shouldAdd(current, node)) {\n continue;\n }\n // Set the class list (as a list of classes, separated by space).\n if (m[2]) {\n var classes = m[2].split('.');\n\n classes.forEach(function(cl) {\n var bgColor = /^bg_/.test(cl);\n // slice out `bg_` if it's a background color\n var colorName = bgColor ? cl.slice(3) : cl;\n\n if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {\n var propName = bgColor ? 'background-color' : 'color';\n var propValue = DEFAULT_COLOR_CLASS[colorName];\n\n node.style[propName] = propValue;\n }\n });\n\n node.className = classes.join(' ');\n }\n // Append the node to the current node, and enter the scope of the new\n // node.\n tagStack.push(m[1]);\n current.appendChild(node);\n current = node;\n continue;\n }\n\n // Text nodes are leaf nodes.\n current.appendChild(window.document.createTextNode(unescape(t)));\n }\n\n return rootDiv;\n}\n\n// This is a list of all the Unicode characters that have a strong\n// right-to-left category. What this means is that these characters are\n// written right-to-left for sure. It was generated by pulling all the strong\n// right-to-left characters out of the Unicode data table. That table can\n// found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\nvar strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6],\n [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d],\n [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6],\n [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5],\n [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815],\n [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858],\n [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f],\n [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c],\n [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1],\n [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc],\n [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808],\n [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855],\n [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f],\n [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13],\n [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58],\n [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72],\n [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f],\n [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32],\n [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42],\n [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f],\n [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59],\n [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62],\n [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77],\n [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b],\n [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n\nfunction isStrongRTLChar(charCode) {\n for (var i = 0; i < strongRTLRanges.length; i++) {\n var currentRange = strongRTLRanges[i];\n if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction determineBidi(cueDiv) {\n var nodeStack = [],\n text = \"\",\n charCode;\n\n if (!cueDiv || !cueDiv.childNodes) {\n return \"ltr\";\n }\n\n function pushNodes(nodeStack, node) {\n for (var i = node.childNodes.length - 1; i >= 0; i--) {\n nodeStack.push(node.childNodes[i]);\n }\n }\n\n function nextTextNode(nodeStack) {\n if (!nodeStack || !nodeStack.length) {\n return null;\n }\n\n var node = nodeStack.pop(),\n text = node.textContent || node.innerText;\n if (text) {\n // TODO: This should match all unicode type B characters (paragraph\n // separator characters). See issue #115.\n var m = text.match(/^.*(\\n|\\r)/);\n if (m) {\n nodeStack.length = 0;\n return m[0];\n }\n return text;\n }\n if (node.tagName === \"ruby\") {\n return nextTextNode(nodeStack);\n }\n if (node.childNodes) {\n pushNodes(nodeStack, node);\n return nextTextNode(nodeStack);\n }\n }\n\n pushNodes(nodeStack, cueDiv);\n while ((text = nextTextNode(nodeStack))) {\n for (var i = 0; i < text.length; i++) {\n charCode = text.charCodeAt(i);\n if (isStrongRTLChar(charCode)) {\n return \"rtl\";\n }\n }\n }\n return \"ltr\";\n}\n\nfunction computeLinePos(cue) {\n if (typeof cue.line === \"number\" &&\n (cue.snapToLines || (cue.line >= 0 && cue.line <= 100))) {\n return cue.line;\n }\n if (!cue.track || !cue.track.textTrackList ||\n !cue.track.textTrackList.mediaElement) {\n return -1;\n }\n var track = cue.track,\n trackList = track.textTrackList,\n count = 0;\n for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n if (trackList[i].mode === \"showing\") {\n count++;\n }\n }\n return ++count * -1;\n}\n\nfunction StyleBox() {\n}\n\n// Apply styles to a div. If there is no div passed then it defaults to the\n// div on 'this'.\nStyleBox.prototype.applyStyles = function(styles, div) {\n div = div || this.div;\n for (var prop in styles) {\n if (styles.hasOwnProperty(prop)) {\n div.style[prop] = styles[prop];\n }\n }\n};\n\nStyleBox.prototype.formatStyle = function(val, unit) {\n return val === 0 ? 0 : val + unit;\n};\n\n// Constructs the computed display state of the cue (a div). Places the div\n// into the overlay which should be a block level element (usually a div).\nfunction CueStyleBox(window, cue, styleOptions) {\n StyleBox.call(this);\n this.cue = cue;\n\n // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n // have inline positioning and will function as the cue background box.\n this.cueDiv = parseContent(window, cue.text);\n var styles = {\n color: \"rgba(255, 255, 255, 1)\",\n backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n position: \"relative\",\n left: 0,\n right: 0,\n top: 0,\n bottom: 0,\n display: \"inline\",\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\"\n };\n\n this.applyStyles(styles, this.cueDiv);\n\n // Create an absolutely positioned div that will be used to position the cue\n // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n // mirrors of them except middle instead of center on Safari.\n this.div = window.document.createElement(\"div\");\n styles = {\n direction: determineBidi(this.cueDiv),\n writingMode: cue.vertical === \"\" ? \"horizontal-tb\"\n : cue.vertical === \"lr\" ? \"vertical-lr\"\n : \"vertical-rl\",\n unicodeBidi: \"plaintext\",\n textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n font: styleOptions.font,\n whiteSpace: \"pre-line\",\n position: \"absolute\"\n };\n\n this.applyStyles(styles);\n this.div.appendChild(this.cueDiv);\n\n // Calculate the distance from the reference edge of the viewport to the text\n // position of the cue box. The reference edge will be resolved later when\n // the box orientation styles are applied.\n var textPos = 0;\n switch (cue.positionAlign) {\n case \"start\":\n textPos = cue.position;\n break;\n case \"center\":\n textPos = cue.position - (cue.size / 2);\n break;\n case \"end\":\n textPos = cue.position - cue.size;\n break;\n }\n\n // Horizontal box orientation; textPos is the distance from the left edge of the\n // area to the left edge of the box and cue.size is the distance extending to\n // the right from there.\n if (cue.vertical === \"\") {\n this.applyStyles({\n left: this.formatStyle(textPos, \"%\"),\n width: this.formatStyle(cue.size, \"%\")\n });\n // Vertical box orientation; textPos is the distance from the top edge of the\n // area to the top edge of the box and cue.size is the height extending\n // downwards from there.\n } else {\n this.applyStyles({\n top: this.formatStyle(textPos, \"%\"),\n height: this.formatStyle(cue.size, \"%\")\n });\n }\n\n this.move = function(box) {\n this.applyStyles({\n top: this.formatStyle(box.top, \"px\"),\n bottom: this.formatStyle(box.bottom, \"px\"),\n left: this.formatStyle(box.left, \"px\"),\n right: this.formatStyle(box.right, \"px\"),\n height: this.formatStyle(box.height, \"px\"),\n width: this.formatStyle(box.width, \"px\")\n });\n };\n}\nCueStyleBox.prototype = _objCreate(StyleBox.prototype);\nCueStyleBox.prototype.constructor = CueStyleBox;\n\n// Represents the co-ordinates of an Element in a way that we can easily\n// compute things with such as if it overlaps or intersects with another Element.\n// Can initialize it with either a StyleBox or another BoxPosition.\nfunction BoxPosition(obj) {\n // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n // was passed in and we need to copy the results of 'getBoundingClientRect'\n // as the object returned is readonly. All co-ordinate values are in reference\n // to the viewport origin (top left).\n var lh, height, width, top;\n if (obj.div) {\n height = obj.div.offsetHeight;\n width = obj.div.offsetWidth;\n top = obj.div.offsetTop;\n\n var rects = (rects = obj.div.childNodes) && (rects = rects[0]) &&\n rects.getClientRects && rects.getClientRects();\n obj = obj.div.getBoundingClientRect();\n // In certain cases the outter div will be slightly larger then the sum of\n // the inner div's lines. This could be due to bold text, etc, on some platforms.\n // In this case we should get the average line height and use that. This will\n // result in the desired behaviour.\n lh = rects ? Math.max((rects[0] && rects[0].height) || 0, obj.height / rects.length)\n : 0;\n\n }\n this.left = obj.left;\n this.right = obj.right;\n this.top = obj.top || top;\n this.height = obj.height || height;\n this.bottom = obj.bottom || (top + (obj.height || height));\n this.width = obj.width || width;\n this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n}\n\n// Move the box along a particular axis. Optionally pass in an amount to move\n// the box. If no amount is passed then the default is the line height of the\n// box.\nBoxPosition.prototype.move = function(axis, toMove) {\n toMove = toMove !== undefined ? toMove : this.lineHeight;\n switch (axis) {\n case \"+x\":\n this.left += toMove;\n this.right += toMove;\n break;\n case \"-x\":\n this.left -= toMove;\n this.right -= toMove;\n break;\n case \"+y\":\n this.top += toMove;\n this.bottom += toMove;\n break;\n case \"-y\":\n this.top -= toMove;\n this.bottom -= toMove;\n break;\n }\n};\n\n// Check if this box overlaps another box, b2.\nBoxPosition.prototype.overlaps = function(b2) {\n return this.left < b2.right &&\n this.right > b2.left &&\n this.top < b2.bottom &&\n this.bottom > b2.top;\n};\n\n// Check if this box overlaps any other boxes in boxes.\nBoxPosition.prototype.overlapsAny = function(boxes) {\n for (var i = 0; i < boxes.length; i++) {\n if (this.overlaps(boxes[i])) {\n return true;\n }\n }\n return false;\n};\n\n// Check if this box is within another box.\nBoxPosition.prototype.within = function(container) {\n return this.top >= container.top &&\n this.bottom <= container.bottom &&\n this.left >= container.left &&\n this.right <= container.right;\n};\n\n// Check if this box is entirely within the container or it is overlapping\n// on the edge opposite of the axis direction passed. For example, if \"+x\" is\n// passed and the box is overlapping on the left edge of the container, then\n// return true.\nBoxPosition.prototype.overlapsOppositeAxis = function(container, axis) {\n switch (axis) {\n case \"+x\":\n return this.left < container.left;\n case \"-x\":\n return this.right > container.right;\n case \"+y\":\n return this.top < container.top;\n case \"-y\":\n return this.bottom > container.bottom;\n }\n};\n\n// Find the percentage of the area that this box is overlapping with another\n// box.\nBoxPosition.prototype.intersectPercentage = function(b2) {\n var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n intersectArea = x * y;\n return intersectArea / (this.height * this.width);\n};\n\n// Convert the positions from this box to CSS compatible positions using\n// the reference container's positions. This has to be done because this\n// box's positions are in reference to the viewport origin, whereas, CSS\n// values are in referecne to their respective edges.\nBoxPosition.prototype.toCSSCompatValues = function(reference) {\n return {\n top: this.top - reference.top,\n bottom: reference.bottom - this.bottom,\n left: this.left - reference.left,\n right: reference.right - this.right,\n height: this.height,\n width: this.width\n };\n};\n\n// Get an object that represents the box's position without anything extra.\n// Can pass a StyleBox, HTMLElement, or another BoxPositon.\nBoxPosition.getSimpleBoxPosition = function(obj) {\n var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n\n obj = obj.div ? obj.div.getBoundingClientRect() :\n obj.tagName ? obj.getBoundingClientRect() : obj;\n var ret = {\n left: obj.left,\n right: obj.right,\n top: obj.top || top,\n height: obj.height || height,\n bottom: obj.bottom || (top + (obj.height || height)),\n width: obj.width || width\n };\n return ret;\n};\n\n// Move a StyleBox to its specified, or next best, position. The containerBox\n// is the box that contains the StyleBox, such as a div. boxPositions are\n// a list of other boxes that the styleBox can't overlap with.\nfunction moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n\n // Find the best position for a cue box, b, on the video. The axis parameter\n // is a list of axis, the order of which, it will move the box along. For example:\n // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n // direction. If it doesn't find a good position for it there it will then move\n // it along the x axis in the negative direction.\n function findBestPosition(b, axis) {\n var bestPosition,\n specifiedPosition = new BoxPosition(b),\n percentage = 1; // Highest possible so the first thing we get is better.\n\n for (var i = 0; i < axis.length; i++) {\n while (b.overlapsOppositeAxis(containerBox, axis[i]) ||\n (b.within(containerBox) && b.overlapsAny(boxPositions))) {\n b.move(axis[i]);\n }\n // We found a spot where we aren't overlapping anything. This is our\n // best position.\n if (b.within(containerBox)) {\n return b;\n }\n var p = b.intersectPercentage(containerBox);\n // If we're outside the container box less then we were on our last try\n // then remember this position as the best position.\n if (percentage > p) {\n bestPosition = new BoxPosition(b);\n percentage = p;\n }\n // Reset the box position to the specified position.\n b = new BoxPosition(specifiedPosition);\n }\n return bestPosition || specifiedPosition;\n }\n\n var boxPosition = new BoxPosition(styleBox),\n cue = styleBox.cue,\n linePos = computeLinePos(cue),\n axis = [];\n\n // If we have a line number to align the cue to.\n if (cue.snapToLines) {\n var size;\n switch (cue.vertical) {\n case \"\":\n axis = [ \"+y\", \"-y\" ];\n size = \"height\";\n break;\n case \"rl\":\n axis = [ \"+x\", \"-x\" ];\n size = \"width\";\n break;\n case \"lr\":\n axis = [ \"-x\", \"+x\" ];\n size = \"width\";\n break;\n }\n\n var step = boxPosition.lineHeight,\n position = step * Math.round(linePos),\n maxPosition = containerBox[size] + step,\n initialAxis = axis[0];\n\n // If the specified intial position is greater then the max position then\n // clamp the box to the amount of steps it would take for the box to\n // reach the max position.\n if (Math.abs(position) > maxPosition) {\n position = position < 0 ? -1 : 1;\n position *= Math.ceil(maxPosition / step) * step;\n }\n\n // If computed line position returns negative then line numbers are\n // relative to the bottom of the video instead of the top. Therefore, we\n // need to increase our initial position by the length or width of the\n // video, depending on the writing direction, and reverse our axis directions.\n if (linePos < 0) {\n position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n axis = axis.reverse();\n }\n\n // Move the box to the specified position. This may not be its best\n // position.\n boxPosition.move(initialAxis, position);\n\n } else {\n // If we have a percentage line value for the cue.\n var calculatedPercentage = (boxPosition.lineHeight / containerBox.height) * 100;\n\n switch (cue.lineAlign) {\n case \"center\":\n linePos -= (calculatedPercentage / 2);\n break;\n case \"end\":\n linePos -= calculatedPercentage;\n break;\n }\n\n // Apply initial line position to the cue box.\n switch (cue.vertical) {\n case \"\":\n styleBox.applyStyles({\n top: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"rl\":\n styleBox.applyStyles({\n left: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n case \"lr\":\n styleBox.applyStyles({\n right: styleBox.formatStyle(linePos, \"%\")\n });\n break;\n }\n\n axis = [ \"+y\", \"-x\", \"+x\", \"-y\" ];\n\n // Get the box position again after we've applied the specified positioning\n // to it.\n boxPosition = new BoxPosition(styleBox);\n }\n\n var bestPosition = findBestPosition(boxPosition, axis);\n styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n}\n\nfunction WebVTT() {\n // Nothing\n}\n\n// Helper to allow strings to be decoded instead of the default binary utf8 data.\nWebVTT.StringDecoder = function() {\n return {\n decode: function(data) {\n if (!data) {\n return \"\";\n }\n if (typeof data !== \"string\") {\n throw new Error(\"Error - expected string data.\");\n }\n return decodeURIComponent(encodeURIComponent(data));\n }\n };\n};\n\nWebVTT.convertCueToDOMTree = function(window, cuetext) {\n if (!window || !cuetext) {\n return null;\n }\n return parseContent(window, cuetext);\n};\n\nvar FONT_SIZE_PERCENT = 0.05;\nvar FONT_STYLE = \"sans-serif\";\nvar CUE_BACKGROUND_PADDING = \"1.5%\";\n\n// Runs the processing model over the cues and regions passed to it.\n// @param overlay A block level element (usually a div) that the computed cues\n// and regions will be placed into.\nWebVTT.processCues = function(window, cues, overlay) {\n if (!window || !cues || !overlay) {\n return null;\n }\n\n // Remove all previous children.\n while (overlay.firstChild) {\n overlay.removeChild(overlay.firstChild);\n }\n\n var paddedOverlay = window.document.createElement(\"div\");\n paddedOverlay.style.position = \"absolute\";\n paddedOverlay.style.left = \"0\";\n paddedOverlay.style.right = \"0\";\n paddedOverlay.style.top = \"0\";\n paddedOverlay.style.bottom = \"0\";\n paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n overlay.appendChild(paddedOverlay);\n\n // Determine if we need to compute the display states of the cues. This could\n // be the case if a cue's state has been changed since the last computation or\n // if it has not been computed yet.\n function shouldCompute(cues) {\n for (var i = 0; i < cues.length; i++) {\n if (cues[i].hasBeenReset || !cues[i].displayState) {\n return true;\n }\n }\n return false;\n }\n\n // We don't need to recompute the cues' display states. Just reuse them.\n if (!shouldCompute(cues)) {\n for (var i = 0; i < cues.length; i++) {\n paddedOverlay.appendChild(cues[i].displayState);\n }\n return;\n }\n\n var boxPositions = [],\n containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n var styleOptions = {\n font: fontSize + \"px \" + FONT_STYLE\n };\n\n (function() {\n var styleBox, cue;\n\n for (var i = 0; i < cues.length; i++) {\n cue = cues[i];\n\n // Compute the intial position and styles of the cue div.\n styleBox = new CueStyleBox(window, cue, styleOptions);\n paddedOverlay.appendChild(styleBox.div);\n\n // Move the cue div to it's correct line position.\n moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);\n\n // Remember the computed div so that we don't have to recompute it later\n // if we don't have too.\n cue.displayState = styleBox.div;\n\n boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n }\n })();\n};\n\nWebVTT.Parser = function(window, vttjs, decoder) {\n if (!decoder) {\n decoder = vttjs;\n vttjs = {};\n }\n if (!vttjs) {\n vttjs = {};\n }\n\n this.window = window;\n this.vttjs = vttjs;\n this.state = \"INITIAL\";\n this.buffer = \"\";\n this.decoder = decoder || new TextDecoder(\"utf8\");\n this.regionList = [];\n};\n\nWebVTT.Parser.prototype = {\n // If the error is a ParsingError then report it to the consumer if\n // possible. If it's not a ParsingError then throw it like normal.\n reportOrThrowError: function(e) {\n if (e instanceof ParsingError) {\n this.onparsingerror && this.onparsingerror(e);\n } else {\n throw e;\n }\n },\n parse: function (data) {\n var self = this;\n\n // If there is no data then we won't decode it, but will just try to parse\n // whatever is in buffer already. This may occur in circumstances, for\n // example when flush() is called.\n if (data) {\n // Try to decode the data that we received.\n self.buffer += self.decoder.decode(data, {stream: true});\n }\n\n function collectNextLine() {\n var buffer = self.buffer;\n var pos = 0;\n while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n ++pos;\n }\n var line = buffer.substr(0, pos);\n // Advance the buffer early in case we fail below.\n if (buffer[pos] === '\\r') {\n ++pos;\n }\n if (buffer[pos] === '\\n') {\n ++pos;\n }\n self.buffer = buffer.substr(pos);\n return line;\n }\n\n // 3.4 WebVTT region and WebVTT region settings syntax\n function parseRegion(input) {\n var settings = new Settings();\n\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"id\":\n settings.set(k, v);\n break;\n case \"width\":\n settings.percent(k, v);\n break;\n case \"lines\":\n settings.integer(k, v);\n break;\n case \"regionanchor\":\n case \"viewportanchor\":\n var xy = v.split(',');\n if (xy.length !== 2) {\n break;\n }\n // We have to make sure both x and y parse, so use a temporary\n // settings object here.\n var anchor = new Settings();\n anchor.percent(\"x\", xy[0]);\n anchor.percent(\"y\", xy[1]);\n if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n break;\n }\n settings.set(k + \"X\", anchor.get(\"x\"));\n settings.set(k + \"Y\", anchor.get(\"y\"));\n break;\n case \"scroll\":\n settings.alt(k, v, [\"up\"]);\n break;\n }\n }, /=/, /\\s/);\n\n // Create the region, using default values for any values that were not\n // specified.\n if (settings.has(\"id\")) {\n var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n region.width = settings.get(\"width\", 100);\n region.lines = settings.get(\"lines\", 3);\n region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n region.scroll = settings.get(\"scroll\", \"\");\n // Register the region.\n self.onregion && self.onregion(region);\n // Remember the VTTRegion for later in case we parse any VTTCues that\n // reference it.\n self.regionList.push({\n id: settings.get(\"id\"),\n region: region\n });\n }\n }\n\n // draft-pantos-http-live-streaming-20\n // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n // 3.5 WebVTT\n function parseTimestampMap(input) {\n var settings = new Settings();\n\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"MPEGT\":\n settings.integer(k + 'S', v);\n break;\n case \"LOCA\":\n settings.set(k + 'L', parseTimeStamp(v));\n break;\n }\n }, /[^\\d]:/, /,/);\n\n self.ontimestampmap && self.ontimestampmap({\n \"MPEGTS\": settings.get(\"MPEGTS\"),\n \"LOCAL\": settings.get(\"LOCAL\")\n });\n }\n\n // 3.2 WebVTT metadata header syntax\n function parseHeader(input) {\n if (input.match(/X-TIMESTAMP-MAP/)) {\n // This line contains HLS X-TIMESTAMP-MAP metadata\n parseOptions(input, function(k, v) {\n switch(k) {\n case \"X-TIMESTAMP-MAP\":\n parseTimestampMap(v);\n break;\n }\n }, /=/);\n } else {\n parseOptions(input, function (k, v) {\n switch (k) {\n case \"Region\":\n // 3.3 WebVTT region metadata header syntax\n parseRegion(v);\n break;\n }\n }, /:/);\n }\n\n }\n\n // 5.1 WebVTT file parsing.\n try {\n var line;\n if (self.state === \"INITIAL\") {\n // We can't start parsing until we have the first line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n line = collectNextLine();\n\n var m = line.match(/^WEBVTT([ \\t].*)?$/);\n if (!m || !m[0]) {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n\n self.state = \"HEADER\";\n }\n\n var alreadyCollectedLine = false;\n while (self.buffer) {\n // We can't parse a line until we have the full line.\n if (!/\\r\\n|\\n/.test(self.buffer)) {\n return this;\n }\n\n if (!alreadyCollectedLine) {\n line = collectNextLine();\n } else {\n alreadyCollectedLine = false;\n }\n\n switch (self.state) {\n case \"HEADER\":\n // 13-18 - Allow a header (metadata) under the WEBVTT line.\n if (/:/.test(line)) {\n parseHeader(line);\n } else if (!line) {\n // An empty line terminates the header and starts the body (cues).\n self.state = \"ID\";\n }\n continue;\n case \"NOTE\":\n // Ignore NOTE blocks.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n case \"ID\":\n // Check for the start of NOTE blocks.\n if (/^NOTE($|[ \\t])/.test(line)) {\n self.state = \"NOTE\";\n break;\n }\n // 19-29 - Allow any number of line terminators, then initialize new cue values.\n if (!line) {\n continue;\n }\n self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n // Safari still uses the old middle value and won't accept center\n try {\n self.cue.align = \"center\";\n } catch (e) {\n self.cue.align = \"middle\";\n }\n self.state = \"CUE\";\n // 30-39 - Check if self line contains an optional identifier or timing data.\n if (line.indexOf(\"-->\") === -1) {\n self.cue.id = line;\n continue;\n }\n // Process line as start of a cue.\n /*falls through*/\n case \"CUE\":\n // 40 - Collect cue timings and settings.\n try {\n parseCue(line, self.cue, self.regionList);\n } catch (e) {\n self.reportOrThrowError(e);\n // In case of an error ignore rest of the cue.\n self.cue = null;\n self.state = \"BADCUE\";\n continue;\n }\n self.state = \"CUETEXT\";\n continue;\n case \"CUETEXT\":\n var hasSubstring = line.indexOf(\"-->\") !== -1;\n // 34 - If we have an empty line then report the cue.\n // 35 - If we have the special substring '-->' then report the cue,\n // but do not collect the line as we need to process the current\n // one as a new cue.\n if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n // We are done parsing self cue.\n self.oncue && self.oncue(self.cue);\n self.cue = null;\n self.state = \"ID\";\n continue;\n }\n if (self.cue.text) {\n self.cue.text += \"\\n\";\n }\n self.cue.text += line.replace(/\\u2028/g, '\\n').replace(/u2029/g, '\\n');\n continue;\n case \"BADCUE\": // BADCUE\n // 54-62 - Collect and discard the remaining cue.\n if (!line) {\n self.state = \"ID\";\n }\n continue;\n }\n }\n } catch (e) {\n self.reportOrThrowError(e);\n\n // If we are currently parsing a cue, report what we have.\n if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n self.oncue(self.cue);\n }\n self.cue = null;\n // Enter BADWEBVTT state if header was not parsed correctly otherwise\n // another exception occurred so enter BADCUE state.\n self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n }\n return this;\n },\n flush: function () {\n var self = this;\n try {\n // Finish decoding the stream.\n self.buffer += self.decoder.decode();\n // Synthesize the end of the current cue or region.\n if (self.cue || self.state === \"HEADER\") {\n self.buffer += \"\\n\\n\";\n self.parse();\n }\n // If we've flushed, parsed, and we're still on the INITIAL state then\n // that means we don't have enough of the stream to parse the first\n // line.\n if (self.state === \"INITIAL\") {\n throw new ParsingError(ParsingError.Errors.BadSignature);\n }\n } catch(e) {\n self.reportOrThrowError(e);\n }\n self.onflush && self.onflush();\n return this;\n }\n};\n\nmodule.exports = WebVTT;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar autoKeyword = \"auto\";\nvar directionSetting = {\n \"\": 1,\n \"lr\": 1,\n \"rl\": 1\n};\nvar alignSetting = {\n \"start\": 1,\n \"center\": 1,\n \"end\": 1,\n \"left\": 1,\n \"right\": 1,\n \"auto\": 1,\n \"line-left\": 1,\n \"line-right\": 1\n};\n\nfunction findDirectionSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var dir = directionSetting[value.toLowerCase()];\n return dir ? value.toLowerCase() : false;\n}\n\nfunction findAlignSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var align = alignSetting[value.toLowerCase()];\n return align ? value.toLowerCase() : false;\n}\n\nfunction VTTCue(startTime, endTime, text) {\n /**\n * Shim implementation specific properties. These properties are not in\n * the spec.\n */\n\n // Lets us know when the VTTCue's data has changed in such a way that we need\n // to recompute its display state. This lets us compute its display state\n // lazily.\n this.hasBeenReset = false;\n\n /**\n * VTTCue and TextTrackCue properties\n * http://dev.w3.org/html5/webvtt/#vttcue-interface\n */\n\n var _id = \"\";\n var _pauseOnExit = false;\n var _startTime = startTime;\n var _endTime = endTime;\n var _text = text;\n var _region = null;\n var _vertical = \"\";\n var _snapToLines = true;\n var _line = \"auto\";\n var _lineAlign = \"start\";\n var _position = \"auto\";\n var _positionAlign = \"auto\";\n var _size = 100;\n var _align = \"center\";\n\n Object.defineProperties(this, {\n \"id\": {\n enumerable: true,\n get: function() {\n return _id;\n },\n set: function(value) {\n _id = \"\" + value;\n }\n },\n\n \"pauseOnExit\": {\n enumerable: true,\n get: function() {\n return _pauseOnExit;\n },\n set: function(value) {\n _pauseOnExit = !!value;\n }\n },\n\n \"startTime\": {\n enumerable: true,\n get: function() {\n return _startTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Start time must be set to a number.\");\n }\n _startTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"endTime\": {\n enumerable: true,\n get: function() {\n return _endTime;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"End time must be set to a number.\");\n }\n _endTime = value;\n this.hasBeenReset = true;\n }\n },\n\n \"text\": {\n enumerable: true,\n get: function() {\n return _text;\n },\n set: function(value) {\n _text = \"\" + value;\n this.hasBeenReset = true;\n }\n },\n\n \"region\": {\n enumerable: true,\n get: function() {\n return _region;\n },\n set: function(value) {\n _region = value;\n this.hasBeenReset = true;\n }\n },\n\n \"vertical\": {\n enumerable: true,\n get: function() {\n return _vertical;\n },\n set: function(value) {\n var setting = findDirectionSetting(value);\n // Have to check for false because the setting an be an empty string.\n if (setting === false) {\n throw new SyntaxError(\"Vertical: an invalid or illegal direction string was specified.\");\n }\n _vertical = setting;\n this.hasBeenReset = true;\n }\n },\n\n \"snapToLines\": {\n enumerable: true,\n get: function() {\n return _snapToLines;\n },\n set: function(value) {\n _snapToLines = !!value;\n this.hasBeenReset = true;\n }\n },\n\n \"line\": {\n enumerable: true,\n get: function() {\n return _line;\n },\n set: function(value) {\n if (typeof value !== \"number\" && value !== autoKeyword) {\n throw new SyntaxError(\"Line: an invalid number or illegal string was specified.\");\n }\n _line = value;\n this.hasBeenReset = true;\n }\n },\n\n \"lineAlign\": {\n enumerable: true,\n get: function() {\n return _lineAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"lineAlign: an invalid or illegal string was specified.\");\n } else {\n _lineAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"position\": {\n enumerable: true,\n get: function() {\n return _position;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Position must be between 0 and 100.\");\n }\n _position = value;\n this.hasBeenReset = true;\n }\n },\n\n \"positionAlign\": {\n enumerable: true,\n get: function() {\n return _positionAlign;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n console.warn(\"positionAlign: an invalid or illegal string was specified.\");\n } else {\n _positionAlign = setting;\n this.hasBeenReset = true;\n }\n }\n },\n\n \"size\": {\n enumerable: true,\n get: function() {\n return _size;\n },\n set: function(value) {\n if (value < 0 || value > 100) {\n throw new Error(\"Size must be between 0 and 100.\");\n }\n _size = value;\n this.hasBeenReset = true;\n }\n },\n\n \"align\": {\n enumerable: true,\n get: function() {\n return _align;\n },\n set: function(value) {\n var setting = findAlignSetting(value);\n if (!setting) {\n throw new SyntaxError(\"align: an invalid or illegal alignment string was specified.\");\n }\n _align = setting;\n this.hasBeenReset = true;\n }\n }\n });\n\n /**\n * Other spec defined properties\n */\n\n // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n this.displayState = undefined;\n}\n\n/**\n * VTTCue methods\n */\n\nVTTCue.prototype.getCueAsHTML = function() {\n // Assume WebVTT.convertCueToDOMTree is on the global.\n return WebVTT.convertCueToDOMTree(window, this.text);\n};\n\nmodule.exports = VTTCue;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nvar scrollSetting = {\n \"\": true,\n \"up\": true\n};\n\nfunction findScrollSetting(value) {\n if (typeof value !== \"string\") {\n return false;\n }\n var scroll = scrollSetting[value.toLowerCase()];\n return scroll ? value.toLowerCase() : false;\n}\n\nfunction isValidPercentValue(value) {\n return typeof value === \"number\" && (value >= 0 && value <= 100);\n}\n\n// VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\nfunction VTTRegion() {\n var _width = 100;\n var _lines = 3;\n var _regionAnchorX = 0;\n var _regionAnchorY = 100;\n var _viewportAnchorX = 0;\n var _viewportAnchorY = 100;\n var _scroll = \"\";\n\n Object.defineProperties(this, {\n \"width\": {\n enumerable: true,\n get: function() {\n return _width;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"Width must be between 0 and 100.\");\n }\n _width = value;\n }\n },\n \"lines\": {\n enumerable: true,\n get: function() {\n return _lines;\n },\n set: function(value) {\n if (typeof value !== \"number\") {\n throw new TypeError(\"Lines must be set to a number.\");\n }\n _lines = value;\n }\n },\n \"regionAnchorY\": {\n enumerable: true,\n get: function() {\n return _regionAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n }\n _regionAnchorY = value;\n }\n },\n \"regionAnchorX\": {\n enumerable: true,\n get: function() {\n return _regionAnchorX;\n },\n set: function(value) {\n if(!isValidPercentValue(value)) {\n throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n }\n _regionAnchorX = value;\n }\n },\n \"viewportAnchorY\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorY;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n }\n _viewportAnchorY = value;\n }\n },\n \"viewportAnchorX\": {\n enumerable: true,\n get: function() {\n return _viewportAnchorX;\n },\n set: function(value) {\n if (!isValidPercentValue(value)) {\n throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n }\n _viewportAnchorX = value;\n }\n },\n \"scroll\": {\n enumerable: true,\n get: function() {\n return _scroll;\n },\n set: function(value) {\n var setting = findScrollSetting(value);\n // Have to check for false as an empty string is a legal value.\n if (setting === false) {\n console.warn(\"Scroll: an invalid or illegal string was specified.\");\n } else {\n _scroll = setting;\n }\n }\n }\n });\n}\n\nmodule.exports = VTTRegion;\n","/**\n * Copyright 2013 vtt.js Contributors\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n// Default exports for Node. Export the extended versions of VTTCue and\n// VTTRegion in Node since we likely want the capability to convert back and\n// forth between JSON. If we don't then it's not that big of a deal since we're\n// off browser.\n\nvar window = require('global/window');\n\nvar vttjs = module.exports = {\n WebVTT: require(\"./vtt.js\"),\n VTTCue: require(\"./vttcue.js\"),\n VTTRegion: require(\"./vttregion.js\")\n};\n\nwindow.vttjs = vttjs;\nwindow.WebVTT = vttjs.WebVTT;\n\nvar cueShim = vttjs.VTTCue;\nvar regionShim = vttjs.VTTRegion;\nvar nativeVTTCue = window.VTTCue;\nvar nativeVTTRegion = window.VTTRegion;\n\nvttjs.shim = function() {\n window.VTTCue = cueShim;\n window.VTTRegion = regionShim;\n};\n\nvttjs.restore = function() {\n window.VTTCue = nativeVTTCue;\n window.VTTRegion = nativeVTTRegion;\n};\n\nif (!window.VTTCue) {\n vttjs.shim();\n}\n","function _setPrototypeOf(o, p) {\n module.exports = _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n o.__proto__ = p;\n return o;\n };\n\n return _setPrototypeOf(o, p);\n}\n\nmodule.exports = _setPrototypeOf;","function _isNativeReflectConstruct() {\n if (typeof Reflect === \"undefined\" || !Reflect.construct) return false;\n if (Reflect.construct.sham) return false;\n if (typeof Proxy === \"function\") return true;\n\n try {\n Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));\n return true;\n } catch (e) {\n return false;\n }\n}\n\nmodule.exports = _isNativeReflectConstruct;","var setPrototypeOf = require(\"./setPrototypeOf\");\n\nvar isNativeReflectConstruct = require(\"./isNativeReflectConstruct\");\n\nfunction _construct(Parent, args, Class) {\n if (isNativeReflectConstruct()) {\n module.exports = _construct = Reflect.construct;\n } else {\n module.exports = _construct = function _construct(Parent, args, Class) {\n var a = [null];\n a.push.apply(a, args);\n var Constructor = Function.bind.apply(Parent, a);\n var instance = new Constructor();\n if (Class) setPrototypeOf(instance, Class.prototype);\n return instance;\n };\n }\n\n return _construct.apply(null, arguments);\n}\n\nmodule.exports = _construct;","var setPrototypeOf = require(\"./setPrototypeOf\");\n\nfunction _inherits(subClass, superClass) {\n if (typeof superClass !== \"function\" && superClass !== null) {\n throw new TypeError(\"Super expression must either be null or a function\");\n }\n\n subClass.prototype = Object.create(superClass && superClass.prototype, {\n constructor: {\n value: subClass,\n writable: true,\n configurable: true\n }\n });\n if (superClass) setPrototypeOf(subClass, superClass);\n}\n\nmodule.exports = _inherits;","// see https://tools.ietf.org/html/rfc1808\n\n/* jshint ignore:start */\n(function(root) { \n/* jshint ignore:end */\n\n var URL_REGEX = /^((?:[a-zA-Z0-9+\\-.]+:)?)(\\/\\/[^\\/?#]*)?((?:[^\\/\\?#]*\\/)*.*?)??(;.*?)?(\\?.*?)?(#.*?)?$/;\n var FIRST_SEGMENT_REGEX = /^([^\\/?#]*)(.*)$/;\n var SLASH_DOT_REGEX = /(?:\\/|^)\\.(?=\\/)/g;\n var SLASH_DOT_DOT_REGEX = /(?:\\/|^)\\.\\.\\/(?!\\.\\.\\/).*?(?=\\/)/g;\n\n var URLToolkit = { // jshint ignore:line\n // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //\n // E.g\n // With opts.alwaysNormalize = false (default, spec compliant)\n // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g\n // With opts.alwaysNormalize = true (not spec compliant)\n // http://a.com/b/cd + /e/f/../g => http://a.com/e/g\n buildAbsoluteURL: function(baseURL, relativeURL, opts) {\n opts = opts || {};\n // remove any remaining space and CRLF\n baseURL = baseURL.trim();\n relativeURL = relativeURL.trim();\n if (!relativeURL) {\n // 2a) If the embedded URL is entirely empty, it inherits the\n // entire base URL (i.e., is set equal to the base URL)\n // and we are done.\n if (!opts.alwaysNormalize) {\n return baseURL;\n }\n var basePartsForNormalise = URLToolkit.parseURL(baseURL);\n if (!basePartsForNormalise) {\n throw new Error('Error trying to parse base URL.');\n }\n basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);\n return URLToolkit.buildURLFromParts(basePartsForNormalise);\n }\n var relativeParts = URLToolkit.parseURL(relativeURL);\n if (!relativeParts) {\n throw new Error('Error trying to parse relative URL.');\n }\n if (relativeParts.scheme) {\n // 2b) If the embedded URL starts with a scheme name, it is\n // interpreted as an absolute URL and we are done.\n if (!opts.alwaysNormalize) {\n return relativeURL;\n }\n relativeParts.path = URLToolkit.normalizePath(relativeParts.path);\n return URLToolkit.buildURLFromParts(relativeParts);\n }\n var baseParts = URLToolkit.parseURL(baseURL);\n if (!baseParts) {\n throw new Error('Error trying to parse base URL.');\n }\n if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {\n // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc\n // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'\n var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);\n baseParts.netLoc = pathParts[1];\n baseParts.path = pathParts[2];\n }\n if (baseParts.netLoc && !baseParts.path) {\n baseParts.path = '/';\n }\n var builtParts = {\n // 2c) Otherwise, the embedded URL inherits the scheme of\n // the base URL.\n scheme: baseParts.scheme,\n netLoc: relativeParts.netLoc,\n path: null,\n params: relativeParts.params,\n query: relativeParts.query,\n fragment: relativeParts.fragment\n };\n if (!relativeParts.netLoc) {\n // 3) If the embedded URL's is non-empty, we skip to\n // Step 7. Otherwise, the embedded URL inherits the \n // (if any) of the base URL.\n builtParts.netLoc = baseParts.netLoc;\n // 4) If the embedded URL path is preceded by a slash \"/\", the\n // path is not relative and we skip to Step 7.\n if (relativeParts.path[0] !== '/') {\n if (!relativeParts.path) {\n // 5) If the embedded URL path is empty (and not preceded by a\n // slash), then the embedded URL inherits the base URL path\n builtParts.path = baseParts.path;\n // 5a) if the embedded URL's is non-empty, we skip to\n // step 7; otherwise, it inherits the of the base\n // URL (if any) and\n if (!relativeParts.params) {\n builtParts.params = baseParts.params;\n // 5b) if the embedded URL's is non-empty, we skip to\n // step 7; otherwise, it inherits the of the base\n // URL (if any) and we skip to step 7.\n if (!relativeParts.query) {\n builtParts.query = baseParts.query;\n }\n }\n } else {\n // 6) The last segment of the base URL's path (anything\n // following the rightmost slash \"/\", or the entire path if no\n // slash is present) is removed and the embedded URL's path is\n // appended in its place.\n var baseURLPath = baseParts.path;\n var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;\n builtParts.path = URLToolkit.normalizePath(newPath);\n }\n }\n }\n if (builtParts.path === null) {\n builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;\n }\n return URLToolkit.buildURLFromParts(builtParts);\n },\n parseURL: function(url) {\n var parts = URL_REGEX.exec(url);\n if (!parts) {\n return null;\n }\n return {\n scheme: parts[1] || '',\n netLoc: parts[2] || '',\n path: parts[3] || '',\n params: parts[4] || '',\n query: parts[5] || '',\n fragment: parts[6] || ''\n };\n },\n normalizePath: function(path) {\n // The following operations are\n // then applied, in order, to the new path:\n // 6a) All occurrences of \"./\", where \".\" is a complete path\n // segment, are removed.\n // 6b) If the path ends with \".\" as a complete path segment,\n // that \".\" is removed.\n path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');\n // 6c) All occurrences of \"/../\", where is a\n // complete path segment not equal to \"..\", are removed.\n // Removal of these path segments is performed iteratively,\n // removing the leftmost matching pattern on each iteration,\n // until no matching pattern remains.\n // 6d) If the path ends with \"/..\", where is a\n // complete path segment not equal to \"..\", that\n // \"/..\" is removed.\n while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {} // jshint ignore:line\n return path.split('').reverse().join('');\n },\n buildURLFromParts: function(parts) {\n return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;\n }\n };\n\n/* jshint ignore:start */\n if(typeof exports === 'object' && typeof module === 'object')\n module.exports = URLToolkit;\n else if(typeof define === 'function' && define.amd)\n define([], function() { return URLToolkit; });\n else if(typeof exports === 'object')\n exports[\"URLToolkit\"] = URLToolkit;\n else\n root[\"URLToolkit\"] = URLToolkit;\n})(this);\n/* jshint ignore:end */\n","/*! @name m3u8-parser @version 4.4.0 @license Apache-2.0 */\nimport window from 'global/window';\n\nfunction _extends() {\n _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n };\n\n return _extends.apply(this, arguments);\n}\n\nfunction _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n subClass.__proto__ = superClass;\n}\n\nfunction _assertThisInitialized(self) {\n if (self === void 0) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n\n return self;\n}\n\n/**\n * @file stream.js\n */\n\n/**\n * A lightweight readable stream implementation that handles event dispatching.\n *\n * @class Stream\n */\nvar Stream =\n/*#__PURE__*/\nfunction () {\n function Stream() {\n this.listeners = {};\n }\n /**\n * Add a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n\n var _proto = Stream.prototype;\n\n _proto.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n\n this.listeners[type].push(listener);\n }\n /**\n * Remove a listener for a specified event type.\n *\n * @param {string} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {boolean} if we could turn it off or not\n */\n ;\n\n _proto.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n\n var index = this.listeners[type].indexOf(listener);\n this.listeners[type].splice(index, 1);\n return index > -1;\n }\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {string} type the event name\n */\n ;\n\n _proto.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n var i;\n var length;\n var args;\n\n if (!callbacks) {\n return;\n } // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n\n\n if (arguments.length === 2) {\n length = callbacks.length;\n\n for (i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n args = Array.prototype.slice.call(arguments, 1);\n length = callbacks.length;\n\n for (i = 0; i < length; ++i) {\n callbacks[i].apply(this, args);\n }\n }\n }\n /**\n * Destroys the stream and cleans up.\n */\n ;\n\n _proto.dispose = function dispose() {\n this.listeners = {};\n }\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n ;\n\n _proto.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n\n return Stream;\n}();\n\n/**\n * A stream that buffers string input and generates a `data` event for each\n * line.\n *\n * @class LineStream\n * @extends Stream\n */\n\nvar LineStream =\n/*#__PURE__*/\nfunction (_Stream) {\n _inheritsLoose(LineStream, _Stream);\n\n function LineStream() {\n var _this;\n\n _this = _Stream.call(this) || this;\n _this.buffer = '';\n return _this;\n }\n /**\n * Add new data to be parsed.\n *\n * @param {string} data the text to process\n */\n\n\n var _proto = LineStream.prototype;\n\n _proto.push = function push(data) {\n var nextNewline;\n this.buffer += data;\n nextNewline = this.buffer.indexOf('\\n');\n\n for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n this.trigger('data', this.buffer.substring(0, nextNewline));\n this.buffer = this.buffer.substring(nextNewline + 1);\n }\n };\n\n return LineStream;\n}(Stream);\n\n/**\n * \"forgiving\" attribute list psuedo-grammar:\n * attributes -> keyvalue (',' keyvalue)*\n * keyvalue -> key '=' value\n * key -> [^=]*\n * value -> '\"' [^\"]* '\"' | [^,]*\n */\n\nvar attributeSeparator = function attributeSeparator() {\n var key = '[^=]*';\n var value = '\"[^\"]*\"|[^,]*';\n var keyvalue = '(?:' + key + ')=(?:' + value + ')';\n return new RegExp('(?:^|,)(' + keyvalue + ')');\n};\n/**\n * Parse attributes from a line given the separator\n *\n * @param {string} attributes the attribute line to parse\n */\n\n\nvar parseAttributes = function parseAttributes(attributes) {\n // split the string using attributes as the separator\n var attrs = attributes.split(attributeSeparator());\n var result = {};\n var i = attrs.length;\n var attr;\n\n while (i--) {\n // filter out unmatched portions of the string\n if (attrs[i] === '') {\n continue;\n } // split the key and value\n\n\n attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n result[attr[0]] = attr[1];\n }\n\n return result;\n};\n/**\n * A line-level M3U8 parser event stream. It expects to receive input one\n * line at a time and performs a context-free parse of its contents. A stream\n * interpretation of a manifest can be useful if the manifest is expected to\n * be too large to fit comfortably into memory or the entirety of the input\n * is not immediately available. Otherwise, it's probably much easier to work\n * with a regular `Parser` object.\n *\n * Produces `data` events with an object that captures the parser's\n * interpretation of the input. That object has a property `tag` that is one\n * of `uri`, `comment`, or `tag`. URIs only have a single additional\n * property, `line`, which captures the entirety of the input without\n * interpretation. Comments similarly have a single additional property\n * `text` which is the input without the leading `#`.\n *\n * Tags always have a property `tagType` which is the lower-cased version of\n * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n * tags are given the tag type `unknown` and a single additional property\n * `data` with the remainder of the input.\n *\n * @class ParseStream\n * @extends Stream\n */\n\n\nvar ParseStream =\n/*#__PURE__*/\nfunction (_Stream) {\n _inheritsLoose(ParseStream, _Stream);\n\n function ParseStream() {\n var _this;\n\n _this = _Stream.call(this) || this;\n _this.customParsers = [];\n _this.tagMappers = [];\n return _this;\n }\n /**\n * Parses an additional line of input.\n *\n * @param {string} line a single line of an M3U8 file to parse\n */\n\n\n var _proto = ParseStream.prototype;\n\n _proto.push = function push(line) {\n var _this2 = this;\n\n var match;\n var event; // strip whitespace\n\n line = line.trim();\n\n if (line.length === 0) {\n // ignore empty lines\n return;\n } // URIs\n\n\n if (line[0] !== '#') {\n this.trigger('data', {\n type: 'uri',\n uri: line\n });\n return;\n } // map tags\n\n\n var newLines = this.tagMappers.reduce(function (acc, mapper) {\n var mappedLine = mapper(line); // skip if unchanged\n\n if (mappedLine === line) {\n return acc;\n }\n\n return acc.concat([mappedLine]);\n }, [line]);\n newLines.forEach(function (newLine) {\n for (var i = 0; i < _this2.customParsers.length; i++) {\n if (_this2.customParsers[i].call(_this2, newLine)) {\n return;\n }\n } // Comments\n\n\n if (newLine.indexOf('#EXT') !== 0) {\n _this2.trigger('data', {\n type: 'comment',\n text: newLine.slice(1)\n });\n\n return;\n } // strip off any carriage returns here so the regex matching\n // doesn't have to account for them.\n\n\n newLine = newLine.replace('\\r', ''); // Tags\n\n match = /^#EXTM3U/.exec(newLine);\n\n if (match) {\n _this2.trigger('data', {\n type: 'tag',\n tagType: 'm3u'\n });\n\n return;\n }\n\n match = /^#EXTINF:?([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'inf'\n };\n\n if (match[1]) {\n event.duration = parseFloat(match[1]);\n }\n\n if (match[2]) {\n event.title = match[2];\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'targetduration'\n };\n\n if (match[1]) {\n event.duration = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#ZEN-TOTAL-DURATION:?([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'totalduration'\n };\n\n if (match[1]) {\n event.duration = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'version'\n };\n\n if (match[1]) {\n event.version = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-MEDIA-SEQUENCE:?(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\\-?[0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'discontinuity-sequence'\n };\n\n if (match[1]) {\n event.number = parseInt(match[1], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'playlist-type'\n };\n\n if (match[1]) {\n event.playlistType = match[1];\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-BYTERANGE:?([0-9.]*)?@?([0-9.]*)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'byterange'\n };\n\n if (match[1]) {\n event.length = parseInt(match[1], 10);\n }\n\n if (match[2]) {\n event.offset = parseInt(match[2], 10);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'allow-cache'\n };\n\n if (match[1]) {\n event.allowed = !/NO/.test(match[1]);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-MAP:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'map'\n };\n\n if (match[1]) {\n var attributes = parseAttributes(match[1]);\n\n if (attributes.URI) {\n event.uri = attributes.URI;\n }\n\n if (attributes.BYTERANGE) {\n var _attributes$BYTERANGE = attributes.BYTERANGE.split('@'),\n length = _attributes$BYTERANGE[0],\n offset = _attributes$BYTERANGE[1];\n\n event.byterange = {};\n\n if (length) {\n event.byterange.length = parseInt(length, 10);\n }\n\n if (offset) {\n event.byterange.offset = parseInt(offset, 10);\n }\n }\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'stream-inf'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n\n if (event.attributes.RESOLUTION) {\n var split = event.attributes.RESOLUTION.split('x');\n var resolution = {};\n\n if (split[0]) {\n resolution.width = parseInt(split[0], 10);\n }\n\n if (split[1]) {\n resolution.height = parseInt(split[1], 10);\n }\n\n event.attributes.RESOLUTION = resolution;\n }\n\n if (event.attributes.BANDWIDTH) {\n event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n }\n\n if (event.attributes['PROGRAM-ID']) {\n event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n }\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-MEDIA:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'media'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-ENDLIST/.exec(newLine);\n\n if (match) {\n _this2.trigger('data', {\n type: 'tag',\n tagType: 'endlist'\n });\n\n return;\n }\n\n match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n\n if (match) {\n _this2.trigger('data', {\n type: 'tag',\n tagType: 'discontinuity'\n });\n\n return;\n }\n\n match = /^#EXT-X-PROGRAM-DATE-TIME:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'program-date-time'\n };\n\n if (match[1]) {\n event.dateTimeString = match[1];\n event.dateTimeObject = new Date(match[1]);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-KEY:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'key'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]); // parse the IV string into a Uint32Array\n\n if (event.attributes.IV) {\n if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n event.attributes.IV = event.attributes.IV.substring(2);\n }\n\n event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n event.attributes.IV = new Uint32Array(event.attributes.IV);\n }\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-START:?(.*)$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'start'\n };\n\n if (match[1]) {\n event.attributes = parseAttributes(match[1]);\n event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-CUE-OUT-CONT:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out-cont'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-CUE-OUT:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-out'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n _this2.trigger('data', event);\n\n return;\n }\n\n match = /^#EXT-X-CUE-IN:?(.*)?$/.exec(newLine);\n\n if (match) {\n event = {\n type: 'tag',\n tagType: 'cue-in'\n };\n\n if (match[1]) {\n event.data = match[1];\n } else {\n event.data = '';\n }\n\n _this2.trigger('data', event);\n\n return;\n } // unknown tag type\n\n\n _this2.trigger('data', {\n type: 'tag',\n data: newLine.slice(4)\n });\n });\n }\n /**\n * Add a parser for custom headers\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.customType the custom type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n ;\n\n _proto.addParser = function addParser(_ref) {\n var _this3 = this;\n\n var expression = _ref.expression,\n customType = _ref.customType,\n dataParser = _ref.dataParser,\n segment = _ref.segment;\n\n if (typeof dataParser !== 'function') {\n dataParser = function dataParser(line) {\n return line;\n };\n }\n\n this.customParsers.push(function (line) {\n var match = expression.exec(line);\n\n if (match) {\n _this3.trigger('data', {\n type: 'custom',\n data: dataParser(line),\n customType: customType,\n segment: segment\n });\n\n return true;\n }\n });\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n ;\n\n _proto.addTagMapper = function addTagMapper(_ref2) {\n var expression = _ref2.expression,\n map = _ref2.map;\n\n var mapFn = function mapFn(line) {\n if (expression.test(line)) {\n return map(line);\n }\n\n return line;\n };\n\n this.tagMappers.push(mapFn);\n };\n\n return ParseStream;\n}(Stream);\n\nfunction decodeB64ToUint8Array(b64Text) {\n var decodedString = window.atob(b64Text || '');\n var array = new Uint8Array(decodedString.length);\n\n for (var i = 0; i < decodedString.length; i++) {\n array[i] = decodedString.charCodeAt(i);\n }\n\n return array;\n}\n\n/**\n * A parser for M3U8 files. The current interpretation of the input is\n * exposed as a property `manifest` on parser objects. It's just two lines to\n * create and parse a manifest once you have the contents available as a string:\n *\n * ```js\n * var parser = new m3u8.Parser();\n * parser.push(xhr.responseText);\n * ```\n *\n * New input can later be applied to update the manifest object by calling\n * `push` again.\n *\n * The parser attempts to create a usable manifest object even if the\n * underlying input is somewhat nonsensical. It emits `info` and `warning`\n * events during the parse if it encounters input that seems invalid or\n * requires some property of the manifest object to be defaulted.\n *\n * @class Parser\n * @extends Stream\n */\n\nvar Parser =\n/*#__PURE__*/\nfunction (_Stream) {\n _inheritsLoose(Parser, _Stream);\n\n function Parser() {\n var _this;\n\n _this = _Stream.call(this) || this;\n _this.lineStream = new LineStream();\n _this.parseStream = new ParseStream();\n\n _this.lineStream.pipe(_this.parseStream);\n /* eslint-disable consistent-this */\n\n\n var self = _assertThisInitialized(_this);\n /* eslint-enable consistent-this */\n\n\n var uris = [];\n var currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n var currentMap; // if specified, the active decryption key\n\n var _key;\n\n var noop = function noop() {};\n\n var defaultMediaGroups = {\n 'AUDIO': {},\n 'VIDEO': {},\n 'CLOSED-CAPTIONS': {},\n 'SUBTITLES': {}\n }; // This is the Widevine UUID from DASH IF IOP. The same exact string is\n // used in MPDs with Widevine encrypted streams.\n\n var widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities\n\n var currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n _this.manifest = {\n allowCache: true,\n discontinuityStarts: [],\n segments: []\n }; // update the manifest with the m3u8 entry from the parse stream\n\n _this.parseStream.on('data', function (entry) {\n var mediaGroup;\n var rendition;\n ({\n tag: function tag() {\n // switch based on the tag type\n (({\n 'allow-cache': function allowCache() {\n this.manifest.allowCache = entry.allowed;\n\n if (!('allowed' in entry)) {\n this.trigger('info', {\n message: 'defaulting allowCache to YES'\n });\n this.manifest.allowCache = true;\n }\n },\n byterange: function byterange() {\n var byterange = {};\n\n if ('length' in entry) {\n currentUri.byterange = byterange;\n byterange.length = entry.length;\n\n if (!('offset' in entry)) {\n this.trigger('info', {\n message: 'defaulting offset to zero'\n });\n entry.offset = 0;\n }\n }\n\n if ('offset' in entry) {\n currentUri.byterange = byterange;\n byterange.offset = entry.offset;\n }\n },\n endlist: function endlist() {\n this.manifest.endList = true;\n },\n inf: function inf() {\n if (!('mediaSequence' in this.manifest)) {\n this.manifest.mediaSequence = 0;\n this.trigger('info', {\n message: 'defaulting media sequence to zero'\n });\n }\n\n if (!('discontinuitySequence' in this.manifest)) {\n this.manifest.discontinuitySequence = 0;\n this.trigger('info', {\n message: 'defaulting discontinuity sequence to zero'\n });\n }\n\n if (entry.duration > 0) {\n currentUri.duration = entry.duration;\n }\n\n if (entry.duration === 0) {\n currentUri.duration = 0.01;\n this.trigger('info', {\n message: 'updating zero segment duration to a small value'\n });\n }\n\n this.manifest.segments = uris;\n },\n key: function key() {\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring key declaration without attribute list'\n });\n return;\n } // clear the active encryption key\n\n\n if (entry.attributes.METHOD === 'NONE') {\n _key = null;\n return;\n }\n\n if (!entry.attributes.URI) {\n this.trigger('warn', {\n message: 'ignoring key declaration without URI'\n });\n return;\n } // check if the content is encrypted for Widevine\n // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf\n\n\n if (entry.attributes.KEYFORMAT === widevineUuid) {\n var VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];\n\n if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {\n this.trigger('warn', {\n message: 'invalid key method provided for Widevine'\n });\n return;\n }\n\n if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {\n this.trigger('warn', {\n message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'\n });\n }\n\n if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {\n this.trigger('warn', {\n message: 'invalid key URI provided for Widevine'\n });\n return;\n }\n\n if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {\n this.trigger('warn', {\n message: 'invalid key ID provided for Widevine'\n });\n return;\n } // if Widevine key attributes are valid, store them as `contentProtection`\n // on the manifest to emulate Widevine tag structure in a DASH mpd\n\n\n this.manifest.contentProtection = {\n 'com.widevine.alpha': {\n attributes: {\n schemeIdUri: entry.attributes.KEYFORMAT,\n // remove '0x' from the key id string\n keyId: entry.attributes.KEYID.substring(2)\n },\n // decode the base64-encoded PSSH box\n pssh: decodeB64ToUint8Array(entry.attributes.URI.split(',')[1])\n }\n };\n return;\n }\n\n if (!entry.attributes.METHOD) {\n this.trigger('warn', {\n message: 'defaulting key method to AES-128'\n });\n } // setup an encryption key for upcoming segments\n\n\n _key = {\n method: entry.attributes.METHOD || 'AES-128',\n uri: entry.attributes.URI\n };\n\n if (typeof entry.attributes.IV !== 'undefined') {\n _key.iv = entry.attributes.IV;\n }\n },\n 'media-sequence': function mediaSequence() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid media sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.mediaSequence = entry.number;\n },\n 'discontinuity-sequence': function discontinuitySequence() {\n if (!isFinite(entry.number)) {\n this.trigger('warn', {\n message: 'ignoring invalid discontinuity sequence: ' + entry.number\n });\n return;\n }\n\n this.manifest.discontinuitySequence = entry.number;\n currentTimeline = entry.number;\n },\n 'playlist-type': function playlistType() {\n if (!/VOD|EVENT/.test(entry.playlistType)) {\n this.trigger('warn', {\n message: 'ignoring unknown playlist type: ' + entry.playlist\n });\n return;\n }\n\n this.manifest.playlistType = entry.playlistType;\n },\n map: function map() {\n currentMap = {};\n\n if (entry.uri) {\n currentMap.uri = entry.uri;\n }\n\n if (entry.byterange) {\n currentMap.byterange = entry.byterange;\n }\n },\n 'stream-inf': function streamInf() {\n this.manifest.playlists = uris;\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!entry.attributes) {\n this.trigger('warn', {\n message: 'ignoring empty stream-inf attributes'\n });\n return;\n }\n\n if (!currentUri.attributes) {\n currentUri.attributes = {};\n }\n\n _extends(currentUri.attributes, entry.attributes);\n },\n media: function media() {\n this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n\n if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n this.trigger('warn', {\n message: 'ignoring incomplete or missing media group'\n });\n return;\n } // find the media group, creating defaults as necessary\n\n\n var mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n rendition = {\n default: /yes/i.test(entry.attributes.DEFAULT)\n };\n\n if (rendition.default) {\n rendition.autoselect = true;\n } else {\n rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n }\n\n if (entry.attributes.LANGUAGE) {\n rendition.language = entry.attributes.LANGUAGE;\n }\n\n if (entry.attributes.URI) {\n rendition.uri = entry.attributes.URI;\n }\n\n if (entry.attributes['INSTREAM-ID']) {\n rendition.instreamId = entry.attributes['INSTREAM-ID'];\n }\n\n if (entry.attributes.CHARACTERISTICS) {\n rendition.characteristics = entry.attributes.CHARACTERISTICS;\n }\n\n if (entry.attributes.FORCED) {\n rendition.forced = /yes/i.test(entry.attributes.FORCED);\n } // insert the new rendition\n\n\n mediaGroup[entry.attributes.NAME] = rendition;\n },\n discontinuity: function discontinuity() {\n currentTimeline += 1;\n currentUri.discontinuity = true;\n this.manifest.discontinuityStarts.push(uris.length);\n },\n 'program-date-time': function programDateTime() {\n if (typeof this.manifest.dateTimeString === 'undefined') {\n // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n // to the manifest object\n // TODO: Consider removing this in future major version\n this.manifest.dateTimeString = entry.dateTimeString;\n this.manifest.dateTimeObject = entry.dateTimeObject;\n }\n\n currentUri.dateTimeString = entry.dateTimeString;\n currentUri.dateTimeObject = entry.dateTimeObject;\n },\n targetduration: function targetduration() {\n if (!isFinite(entry.duration) || entry.duration < 0) {\n this.trigger('warn', {\n message: 'ignoring invalid target duration: ' + entry.duration\n });\n return;\n }\n\n this.manifest.targetDuration = entry.duration;\n },\n totalduration: function totalduration() {\n if (!isFinite(entry.duration) || entry.duration < 0) {\n this.trigger('warn', {\n message: 'ignoring invalid total duration: ' + entry.duration\n });\n return;\n }\n\n this.manifest.totalDuration = entry.duration;\n },\n start: function start() {\n if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n this.trigger('warn', {\n message: 'ignoring start declaration without appropriate attribute list'\n });\n return;\n }\n\n this.manifest.start = {\n timeOffset: entry.attributes['TIME-OFFSET'],\n precise: entry.attributes.PRECISE\n };\n },\n 'cue-out': function cueOut() {\n currentUri.cueOut = entry.data;\n },\n 'cue-out-cont': function cueOutCont() {\n currentUri.cueOutCont = entry.data;\n },\n 'cue-in': function cueIn() {\n currentUri.cueIn = entry.data;\n }\n })[entry.tagType] || noop).call(self);\n },\n uri: function uri() {\n currentUri.uri = entry.uri;\n uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n if (this.manifest.targetDuration && !('duration' in currentUri)) {\n this.trigger('warn', {\n message: 'defaulting segment duration to the target duration'\n });\n currentUri.duration = this.manifest.targetDuration;\n } // annotate with encryption information, if necessary\n\n\n if (_key) {\n currentUri.key = _key;\n }\n\n currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n if (currentMap) {\n currentUri.map = currentMap;\n } // prepare for the next URI\n\n\n currentUri = {};\n },\n comment: function comment() {// comments are not important for playback\n },\n custom: function custom() {\n // if this is segment-level data attach the output to the segment\n if (entry.segment) {\n currentUri.custom = currentUri.custom || {};\n currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n } else {\n this.manifest.custom = this.manifest.custom || {};\n this.manifest.custom[entry.customType] = entry.data;\n }\n }\n })[entry.type].call(self);\n });\n\n return _this;\n }\n /**\n * Parse the input string and update the manifest object.\n *\n * @param {string} chunk a potentially incomplete portion of the manifest\n */\n\n\n var _proto = Parser.prototype;\n\n _proto.push = function push(chunk) {\n this.lineStream.push(chunk);\n }\n /**\n * Flush any remaining input. This can be handy if the last line of an M3U8\n * manifest did not contain a trailing newline but the file has been\n * completely received.\n */\n ;\n\n _proto.end = function end() {\n // flush any buffered input\n this.lineStream.push('\\n');\n }\n /**\n * Add an additional parser for non-standard tags\n *\n * @param {Object} options a map of options for the added parser\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {string} options.type the type to register to the output\n * @param {Function} [options.dataParser] function to parse the line into an object\n * @param {boolean} [options.segment] should tag data be attached to the segment object\n */\n ;\n\n _proto.addParser = function addParser(options) {\n this.parseStream.addParser(options);\n }\n /**\n * Add a custom header mapper\n *\n * @param {Object} options\n * @param {RegExp} options.expression a regular expression to match the custom header\n * @param {Function} options.map function to translate tag into a different tag\n */\n ;\n\n _proto.addTagMapper = function addTagMapper(options) {\n this.parseStream.addTagMapper(options);\n };\n\n return Parser;\n}(Stream);\n\nexport { LineStream, ParseStream, Parser };\n","/*! @name @videojs/vhs-utils @version 1.3.0 @license MIT */\n'use strict';\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nvar URLToolkit = _interopDefault(require('url-toolkit'));\nvar window = _interopDefault(require('global/window'));\n\nvar resolveUrl = function resolveUrl(baseUrl, relativeUrl) {\n // return early if we don't need to resolve\n if (/^[a-z]+:/i.test(relativeUrl)) {\n return relativeUrl;\n } // if the base URL is relative then combine with the current location\n\n\n if (!/\\/\\//i.test(baseUrl)) {\n baseUrl = URLToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n }\n\n return URLToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n};\n\nmodule.exports = resolveUrl;\n","/*! @name @videojs/vhs-utils @version 1.3.0 @license MIT */\n'use strict';\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nvar window = _interopDefault(require('global/window'));\n\nvar atob = function atob(s) {\n return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n};\n\nfunction decodeB64ToUint8Array(b64Text) {\n var decodedString = atob(b64Text);\n var array = new Uint8Array(decodedString.length);\n\n for (var i = 0; i < decodedString.length; i++) {\n array[i] = decodedString.charCodeAt(i);\n }\n\n return array;\n}\n\nmodule.exports = decodeB64ToUint8Array;\n","//[4] \tNameStartChar\t ::= \t\":\" | [A-Z] | \"_\" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\r\n//[4a] \tNameChar\t ::= \tNameStartChar | \"-\" | \".\" | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]\r\n//[5] \tName\t ::= \tNameStartChar (NameChar)*\r\nvar nameStartChar = /[A-Z_a-z\\xC0-\\xD6\\xD8-\\xF6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD]///\\u10000-\\uEFFFF\r\nvar nameChar = new RegExp(\"[\\\\-\\\\.0-9\"+nameStartChar.source.slice(1,-1)+\"\\\\u00B7\\\\u0300-\\\\u036F\\\\u203F-\\\\u2040]\");\r\nvar tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\\:'+nameStartChar.source+nameChar.source+'*)?$');\r\n//var tagNamePattern = /^[a-zA-Z_][\\w\\-\\.]*(?:\\:[a-zA-Z_][\\w\\-\\.]*)?$/\r\n//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')\r\n\r\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\r\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\r\nvar S_TAG = 0;//tag name offerring\r\nvar S_ATTR = 1;//attr name offerring \r\nvar S_ATTR_SPACE=2;//attr name end and space offer\r\nvar S_EQ = 3;//=space?\r\nvar S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)\r\nvar S_ATTR_END = 5;//attr value end and no space(quot end)\r\nvar S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)\r\nvar S_TAG_CLOSE = 7;//closed el\r\n\r\nfunction XMLReader(){\r\n\t\r\n}\r\n\r\nXMLReader.prototype = {\r\n\tparse:function(source,defaultNSMap,entityMap){\r\n\t\tvar domBuilder = this.domBuilder;\r\n\t\tdomBuilder.startDocument();\r\n\t\t_copy(defaultNSMap ,defaultNSMap = {})\r\n\t\tparse(source,defaultNSMap,entityMap,\r\n\t\t\t\tdomBuilder,this.errorHandler);\r\n\t\tdomBuilder.endDocument();\r\n\t}\r\n}\r\nfunction parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){\r\n\tfunction fixedFromCharCode(code) {\r\n\t\t// String.prototype.fromCharCode does not supports\r\n\t\t// > 2 bytes unicode chars directly\r\n\t\tif (code > 0xffff) {\r\n\t\t\tcode -= 0x10000;\r\n\t\t\tvar surrogate1 = 0xd800 + (code >> 10)\r\n\t\t\t\t, surrogate2 = 0xdc00 + (code & 0x3ff);\r\n\r\n\t\t\treturn String.fromCharCode(surrogate1, surrogate2);\r\n\t\t} else {\r\n\t\t\treturn String.fromCharCode(code);\r\n\t\t}\r\n\t}\r\n\tfunction entityReplacer(a){\r\n\t\tvar k = a.slice(1,-1);\r\n\t\tif(k in entityMap){\r\n\t\t\treturn entityMap[k]; \r\n\t\t}else if(k.charAt(0) === '#'){\r\n\t\t\treturn fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))\r\n\t\t}else{\r\n\t\t\terrorHandler.error('entity not found:'+a);\r\n\t\t\treturn a;\r\n\t\t}\r\n\t}\r\n\tfunction appendText(end){//has some bugs\r\n\t\tif(end>start){\r\n\t\t\tvar xt = source.substring(start,end).replace(/&#?\\w+;/g,entityReplacer);\r\n\t\t\tlocator&&position(start);\r\n\t\t\tdomBuilder.characters(xt,0,end-start);\r\n\t\t\tstart = end\r\n\t\t}\r\n\t}\r\n\tfunction position(p,m){\r\n\t\twhile(p>=lineEnd && (m = linePattern.exec(source))){\r\n\t\t\tlineStart = m.index;\r\n\t\t\tlineEnd = lineStart + m[0].length;\r\n\t\t\tlocator.lineNumber++;\r\n\t\t\t//console.log('line++:',locator,startPos,endPos)\r\n\t\t}\r\n\t\tlocator.columnNumber = p-lineStart+1;\r\n\t}\r\n\tvar lineStart = 0;\r\n\tvar lineEnd = 0;\r\n\tvar linePattern = /.*(?:\\r\\n?|\\n)|.*$/g\r\n\tvar locator = domBuilder.locator;\r\n\t\r\n\tvar parseStack = [{currentNSMap:defaultNSMapCopy}]\r\n\tvar closeMap = {};\r\n\tvar start = 0;\r\n\twhile(true){\r\n\t\ttry{\r\n\t\t\tvar tagStart = source.indexOf('<',start);\r\n\t\t\tif(tagStart<0){\r\n\t\t\t\tif(!source.substr(start).match(/^\\s*$/)){\r\n\t\t\t\t\tvar doc = domBuilder.doc;\r\n\t \t\t\tvar text = doc.createTextNode(source.substr(start));\r\n\t \t\t\tdoc.appendChild(text);\r\n\t \t\t\tdomBuilder.currentElement = text;\r\n\t\t\t\t}\r\n\t\t\t\treturn;\r\n\t\t\t}\r\n\t\t\tif(tagStart>start){\r\n\t\t\t\tappendText(tagStart);\r\n\t\t\t}\r\n\t\t\tswitch(source.charAt(tagStart+1)){\r\n\t\t\tcase '/':\r\n\t\t\t\tvar end = source.indexOf('>',tagStart+3);\r\n\t\t\t\tvar tagName = source.substring(tagStart+2,end);\r\n\t\t\t\tvar config = parseStack.pop();\r\n\t\t\t\tif(end<0){\r\n\t\t\t\t\t\r\n\t \t\ttagName = source.substring(tagStart+2).replace(/[\\s<].*/,'');\r\n\t \t\t//console.error('#@@@@@@'+tagName)\r\n\t \t\terrorHandler.error(\"end tag name: \"+tagName+' is not complete:'+config.tagName);\r\n\t \t\tend = tagStart+1+tagName.length;\r\n\t \t}else if(tagName.match(/\\s\r\n\t\t\t\tlocator&&position(tagStart);\r\n\t\t\t\tend = parseInstruction(source,tagStart,domBuilder);\r\n\t\t\t\tbreak;\r\n\t\t\tcase '!':// start){\r\n\t\t\tstart = end;\r\n\t\t}else{\r\n\t\t\t//TODO: 这里有可能sax回退，有位置错误风险\r\n\t\t\tappendText(Math.max(tagStart,start)+1);\r\n\t\t}\r\n\t}\r\n}\r\nfunction copyLocator(f,t){\r\n\tt.lineNumber = f.lineNumber;\r\n\tt.columnNumber = f.columnNumber;\r\n\treturn t;\r\n}\r\n\r\n/**\r\n * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);\r\n * @return end of the elementStartPart(end of elementEndPart for selfClosed el)\r\n */\r\nfunction parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){\r\n\tvar attrName;\r\n\tvar value;\r\n\tvar p = ++start;\r\n\tvar s = S_TAG;//status\r\n\twhile(true){\r\n\t\tvar c = source.charAt(p);\r\n\t\tswitch(c){\r\n\t\tcase '=':\r\n\t\t\tif(s === S_ATTR){//attrName\r\n\t\t\t\tattrName = source.slice(start,p);\r\n\t\t\t\ts = S_EQ;\r\n\t\t\t}else if(s === S_ATTR_SPACE){\r\n\t\t\t\ts = S_EQ;\r\n\t\t\t}else{\r\n\t\t\t\t//fatalError: equal must after attrName or space after attrName\r\n\t\t\t\tthrow new Error('attribute equal must after attrName');\r\n\t\t\t}\r\n\t\t\tbreak;\r\n\t\tcase '\\'':\r\n\t\tcase '\"':\r\n\t\t\tif(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE\r\n\t\t\t\t){//equal\r\n\t\t\t\tif(s === S_ATTR){\r\n\t\t\t\t\terrorHandler.warning('attribute value must after \"=\"')\r\n\t\t\t\t\tattrName = source.slice(start,p)\r\n\t\t\t\t}\r\n\t\t\t\tstart = p+1;\r\n\t\t\t\tp = source.indexOf(c,start)\r\n\t\t\t\tif(p>0){\r\n\t\t\t\t\tvalue = source.slice(start,p).replace(/&#?\\w+;/g,entityReplacer);\r\n\t\t\t\t\tel.add(attrName,value,start-1);\r\n\t\t\t\t\ts = S_ATTR_END;\r\n\t\t\t\t}else{\r\n\t\t\t\t\t//fatalError: no end quot match\r\n\t\t\t\t\tthrow new Error('attribute value no end \\''+c+'\\' match');\r\n\t\t\t\t}\r\n\t\t\t}else if(s == S_ATTR_NOQUOT_VALUE){\r\n\t\t\t\tvalue = source.slice(start,p).replace(/&#?\\w+;/g,entityReplacer);\r\n\t\t\t\t//console.log(attrName,value,start,p)\r\n\t\t\t\tel.add(attrName,value,start);\r\n\t\t\t\t//console.dir(el)\r\n\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed start quot('+c+')!!');\r\n\t\t\t\tstart = p+1;\r\n\t\t\t\ts = S_ATTR_END\r\n\t\t\t}else{\r\n\t\t\t\t//fatalError: no equal before\r\n\t\t\t\tthrow new Error('attribute value must after \"=\"');\r\n\t\t\t}\r\n\t\t\tbreak;\r\n\t\tcase '/':\r\n\t\t\tswitch(s){\r\n\t\t\tcase S_TAG:\r\n\t\t\t\tel.setTagName(source.slice(start,p));\r\n\t\t\tcase S_ATTR_END:\r\n\t\t\tcase S_TAG_SPACE:\r\n\t\t\tcase S_TAG_CLOSE:\r\n\t\t\t\ts =S_TAG_CLOSE;\r\n\t\t\t\tel.closed = true;\r\n\t\t\tcase S_ATTR_NOQUOT_VALUE:\r\n\t\t\tcase S_ATTR:\r\n\t\t\tcase S_ATTR_SPACE:\r\n\t\t\t\tbreak;\r\n\t\t\t//case S_EQ:\r\n\t\t\tdefault:\r\n\t\t\t\tthrow new Error(\"attribute invalid close char('/')\")\r\n\t\t\t}\r\n\t\t\tbreak;\r\n\t\tcase ''://end document\r\n\t\t\t//throw new Error('unexpected end of input')\r\n\t\t\terrorHandler.error('unexpected end of input');\r\n\t\t\tif(s == S_TAG){\r\n\t\t\t\tel.setTagName(source.slice(start,p));\r\n\t\t\t}\r\n\t\t\treturn p;\r\n\t\tcase '>':\r\n\t\t\tswitch(s){\r\n\t\t\tcase S_TAG:\r\n\t\t\t\tel.setTagName(source.slice(start,p));\r\n\t\t\tcase S_ATTR_END:\r\n\t\t\tcase S_TAG_SPACE:\r\n\t\t\tcase S_TAG_CLOSE:\r\n\t\t\t\tbreak;//normal\r\n\t\t\tcase S_ATTR_NOQUOT_VALUE://Compatible state\r\n\t\t\tcase S_ATTR:\r\n\t\t\t\tvalue = source.slice(start,p);\r\n\t\t\t\tif(value.slice(-1) === '/'){\r\n\t\t\t\t\tel.closed = true;\r\n\t\t\t\t\tvalue = value.slice(0,-1)\r\n\t\t\t\t}\r\n\t\t\tcase S_ATTR_SPACE:\r\n\t\t\t\tif(s === S_ATTR_SPACE){\r\n\t\t\t\t\tvalue = attrName;\r\n\t\t\t\t}\r\n\t\t\t\tif(s == S_ATTR_NOQUOT_VALUE){\r\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!!');\r\n\t\t\t\t\tel.add(attrName,value.replace(/&#?\\w+;/g,entityReplacer),start)\r\n\t\t\t\t}else{\r\n\t\t\t\t\tif(currentNSMap[''] !== 'http://www.w3.org/1999/xhtml' || !value.match(/^(?:disabled|checked|selected)$/i)){\r\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed value!! \"'+value+'\" instead!!')\r\n\t\t\t\t\t}\r\n\t\t\t\t\tel.add(value,value,start)\r\n\t\t\t\t}\r\n\t\t\t\tbreak;\r\n\t\t\tcase S_EQ:\r\n\t\t\t\tthrow new Error('attribute value missed!!');\r\n\t\t\t}\r\n//\t\t\tconsole.log(tagName,tagNamePattern,tagNamePattern.test(tagName))\r\n\t\t\treturn p;\r\n\t\t/*xml space '\\x20' | #x9 | #xD | #xA; */\r\n\t\tcase '\\u0080':\r\n\t\t\tc = ' ';\r\n\t\tdefault:\r\n\t\t\tif(c<= ' '){//space\r\n\t\t\t\tswitch(s){\r\n\t\t\t\tcase S_TAG:\r\n\t\t\t\t\tel.setTagName(source.slice(start,p));//tagName\r\n\t\t\t\t\ts = S_TAG_SPACE;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\tcase S_ATTR:\r\n\t\t\t\t\tattrName = source.slice(start,p)\r\n\t\t\t\t\ts = S_ATTR_SPACE;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\tcase S_ATTR_NOQUOT_VALUE:\r\n\t\t\t\t\tvar value = source.slice(start,p).replace(/&#?\\w+;/g,entityReplacer);\r\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!!');\r\n\t\t\t\t\tel.add(attrName,value,start)\r\n\t\t\t\tcase S_ATTR_END:\r\n\t\t\t\t\ts = S_TAG_SPACE;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t//case S_TAG_SPACE:\r\n\t\t\t\t//case S_EQ:\r\n\t\t\t\t//case S_ATTR_SPACE:\r\n\t\t\t\t//\tvoid();break;\r\n\t\t\t\t//case S_TAG_CLOSE:\r\n\t\t\t\t\t//ignore warning\r\n\t\t\t\t}\r\n\t\t\t}else{//not space\r\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\r\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\r\n\t\t\t\tswitch(s){\r\n\t\t\t\t//case S_TAG:void();break;\r\n\t\t\t\t//case S_ATTR:void();break;\r\n\t\t\t\t//case S_ATTR_NOQUOT_VALUE:void();break;\r\n\t\t\t\tcase S_ATTR_SPACE:\r\n\t\t\t\t\tvar tagName = el.tagName;\r\n\t\t\t\t\tif(currentNSMap[''] !== 'http://www.w3.org/1999/xhtml' || !attrName.match(/^(?:disabled|checked|selected)$/i)){\r\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed value!! \"'+attrName+'\" instead2!!')\r\n\t\t\t\t\t}\r\n\t\t\t\t\tel.add(attrName,attrName,start);\r\n\t\t\t\t\tstart = p;\r\n\t\t\t\t\ts = S_ATTR;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\tcase S_ATTR_END:\r\n\t\t\t\t\terrorHandler.warning('attribute space is required\"'+attrName+'\"!!')\r\n\t\t\t\tcase S_TAG_SPACE:\r\n\t\t\t\t\ts = S_ATTR;\r\n\t\t\t\t\tstart = p;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\tcase S_EQ:\r\n\t\t\t\t\ts = S_ATTR_NOQUOT_VALUE;\r\n\t\t\t\t\tstart = p;\r\n\t\t\t\t\tbreak;\r\n\t\t\t\tcase S_TAG_CLOSE:\r\n\t\t\t\t\tthrow new Error(\"elements closed character '/' and '>' must be connected to\");\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}//end outer switch\r\n\t\t//console.log('p++',p)\r\n\t\tp++;\r\n\t}\r\n}\r\n/**\r\n * @return true if has new namespace define\r\n */\r\nfunction appendElement(el,domBuilder,currentNSMap){\r\n\tvar tagName = el.tagName;\r\n\tvar localNSMap = null;\r\n\t//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;\r\n\tvar i = el.length;\r\n\twhile(i--){\r\n\t\tvar a = el[i];\r\n\t\tvar qName = a.qName;\r\n\t\tvar value = a.value;\r\n\t\tvar nsp = qName.indexOf(':');\r\n\t\tif(nsp>0){\r\n\t\t\tvar prefix = a.prefix = qName.slice(0,nsp);\r\n\t\t\tvar localName = qName.slice(nsp+1);\r\n\t\t\tvar nsPrefix = prefix === 'xmlns' && localName\r\n\t\t}else{\r\n\t\t\tlocalName = qName;\r\n\t\t\tprefix = null\r\n\t\t\tnsPrefix = qName === 'xmlns' && ''\r\n\t\t}\r\n\t\t//can not set prefix,because prefix !== ''\r\n\t\ta.localName = localName ;\r\n\t\t//prefix == null for no ns prefix attribute \r\n\t\tif(nsPrefix !== false){//hack!!\r\n\t\t\tif(localNSMap == null){\r\n\t\t\t\tlocalNSMap = {}\r\n\t\t\t\t//console.log(currentNSMap,0)\r\n\t\t\t\t_copy(currentNSMap,currentNSMap={})\r\n\t\t\t\t//console.log(currentNSMap,1)\r\n\t\t\t}\r\n\t\t\tcurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\r\n\t\t\ta.uri = 'http://www.w3.org/2000/xmlns/'\r\n\t\t\tdomBuilder.startPrefixMapping(nsPrefix, value) \r\n\t\t}\r\n\t}\r\n\tvar i = el.length;\r\n\twhile(i--){\r\n\t\ta = el[i];\r\n\t\tvar prefix = a.prefix;\r\n\t\tif(prefix){//no prefix attribute has no namespace\r\n\t\t\tif(prefix === 'xml'){\r\n\t\t\t\ta.uri = 'http://www.w3.org/XML/1998/namespace';\r\n\t\t\t}if(prefix !== 'xmlns'){\r\n\t\t\t\ta.uri = currentNSMap[prefix || '']\r\n\t\t\t\t\r\n\t\t\t\t//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n\tvar nsp = tagName.indexOf(':');\r\n\tif(nsp>0){\r\n\t\tprefix = el.prefix = tagName.slice(0,nsp);\r\n\t\tlocalName = el.localName = tagName.slice(nsp+1);\r\n\t}else{\r\n\t\tprefix = null;//important!!\r\n\t\tlocalName = el.localName = tagName;\r\n\t}\r\n\t//no prefix element has default namespace\r\n\tvar ns = el.uri = currentNSMap[prefix || ''];\r\n\tdomBuilder.startElement(ns,localName,tagName,el);\r\n\t//endPrefixMapping and startPrefixMapping have not any help for dom builder\r\n\t//localNSMap = null\r\n\tif(el.closed){\r\n\t\tdomBuilder.endElement(ns,localName,tagName);\r\n\t\tif(localNSMap){\r\n\t\t\tfor(prefix in localNSMap){\r\n\t\t\t\tdomBuilder.endPrefixMapping(prefix) \r\n\t\t\t}\r\n\t\t}\r\n\t}else{\r\n\t\tel.currentNSMap = currentNSMap;\r\n\t\tel.localNSMap = localNSMap;\r\n\t\t//parseStack.push(el);\r\n\t\treturn true;\r\n\t}\r\n}\r\nfunction parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){\r\n\tif(/^(?:script|textarea)$/i.test(tagName)){\r\n\t\tvar elEndStart = source.indexOf('',elStartEnd);\r\n\t\tvar text = source.substring(elStartEnd+1,elEndStart);\r\n\t\tif(/[&<]/.test(text)){\r\n\t\t\tif(/^script$/i.test(tagName)){\r\n\t\t\t\t//if(!/\\]\\]>/.test(text)){\r\n\t\t\t\t\t//lexHandler.startCDATA();\r\n\t\t\t\t\tdomBuilder.characters(text,0,text.length);\r\n\t\t\t\t\t//lexHandler.endCDATA();\r\n\t\t\t\t\treturn elEndStart;\r\n\t\t\t\t//}\r\n\t\t\t}//}else{//text area\r\n\t\t\t\ttext = text.replace(/&#?\\w+;/g,entityReplacer);\r\n\t\t\t\tdomBuilder.characters(text,0,text.length);\r\n\t\t\t\treturn elEndStart;\r\n\t\t\t//}\r\n\t\t\t\r\n\t\t}\r\n\t}\r\n\treturn elStartEnd+1;\r\n}\r\nfunction fixSelfClosed(source,elStartEnd,tagName,closeMap){\r\n\t//if(tagName in closeMap){\r\n\tvar pos = closeMap[tagName];\r\n\tif(pos == null){\r\n\t\t//console.log(tagName)\r\n\t\tpos = source.lastIndexOf('')\r\n\t\tif(pos',start+4);\r\n\t\t\t//append comment source.substring(4,end)//\");\n\tcase DOCUMENT_TYPE_NODE:\n\t\tvar pubid = node.publicId;\n\t\tvar sysid = node.systemId;\n\t\tbuf.push('');\n\t\t}else if(sysid && sysid!='.'){\n\t\t\tbuf.push(' SYSTEM \"',sysid,'\">');\n\t\t}else{\n\t\t\tvar sub = node.internalSubset;\n\t\t\tif(sub){\n\t\t\t\tbuf.push(\" [\",sub,\"]\");\n\t\t\t}\n\t\t\tbuf.push(\">\");\n\t\t}\n\t\treturn;\n\tcase PROCESSING_INSTRUCTION_NODE:\n\t\treturn buf.push( \"\");\n\tcase ENTITY_REFERENCE_NODE:\n\t\treturn buf.push( '&',node.nodeName,';');\n\t//case ENTITY_NODE:\n\t//case NOTATION_NODE:\n\tdefault:\n\t\tbuf.push('??',node.nodeName);\n\t}\n}\nfunction importNode(doc,node,deep){\n\tvar node2;\n\tswitch (node.nodeType) {\n\tcase ELEMENT_NODE:\n\t\tnode2 = node.cloneNode(false);\n\t\tnode2.ownerDocument = doc;\n\t\t//var attrs = node2.attributes;\n\t\t//var len = attrs.length;\n\t\t//for(var i=0;i','amp':'&','quot':'\"','apos':\"'\"}\r\n\tif(locator){\r\n\t\tdomBuilder.setDocumentLocator(locator)\r\n\t}\r\n\t\r\n\tsax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);\r\n\tsax.domBuilder = options.domBuilder || domBuilder;\r\n\tif(/\\/x?html?$/.test(mimeType)){\r\n\t\tentityMap.nbsp = '\\xa0';\r\n\t\tentityMap.copy = '\\xa9';\r\n\t\tdefaultNSMap['']= 'http://www.w3.org/1999/xhtml';\r\n\t}\r\n\tdefaultNSMap.xml = defaultNSMap.xml || 'http://www.w3.org/XML/1998/namespace';\r\n\tif(source){\r\n\t\tsax.parse(source,defaultNSMap,entityMap);\r\n\t}else{\r\n\t\tsax.errorHandler.error(\"invalid doc source\");\r\n\t}\r\n\treturn domBuilder.doc;\r\n}\r\nfunction buildErrorHandler(errorImpl,domBuilder,locator){\r\n\tif(!errorImpl){\r\n\t\tif(domBuilder instanceof DOMHandler){\r\n\t\t\treturn domBuilder;\r\n\t\t}\r\n\t\terrorImpl = domBuilder ;\r\n\t}\r\n\tvar errorHandler = {}\r\n\tvar isCallback = errorImpl instanceof Function;\r\n\tlocator = locator||{}\r\n\tfunction build(key){\r\n\t\tvar fn = errorImpl[key];\r\n\t\tif(!fn && isCallback){\r\n\t\t\tfn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;\r\n\t\t}\r\n\t\terrorHandler[key] = fn && function(msg){\r\n\t\t\tfn('[xmldom '+key+']\\t'+msg+_locator(locator));\r\n\t\t}||function(){};\r\n\t}\r\n\tbuild('warning');\r\n\tbuild('error');\r\n\tbuild('fatalError');\r\n\treturn errorHandler;\r\n}\r\n\r\n//console.log('#\\n\\n\\n\\n\\n\\n\\n####')\r\n/**\r\n * +ContentHandler+ErrorHandler\r\n * +LexicalHandler+EntityResolver2\r\n * -DeclHandler-DTDHandler \r\n * \r\n * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler\r\n * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2\r\n * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html\r\n */\r\nfunction DOMHandler() {\r\n this.cdata = false;\r\n}\r\nfunction position(locator,node){\r\n\tnode.lineNumber = locator.lineNumber;\r\n\tnode.columnNumber = locator.columnNumber;\r\n}\r\n/**\r\n * @see org.xml.sax.ContentHandler#startDocument\r\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html\r\n */ \r\nDOMHandler.prototype = {\r\n\tstartDocument : function() {\r\n \tthis.doc = new DOMImplementation().createDocument(null, null, null);\r\n \tif (this.locator) {\r\n \tthis.doc.documentURI = this.locator.systemId;\r\n \t}\r\n\t},\r\n\tstartElement:function(namespaceURI, localName, qName, attrs) {\r\n\t\tvar doc = this.doc;\r\n\t var el = doc.createElementNS(namespaceURI, qName||localName);\r\n\t var len = attrs.length;\r\n\t appendElement(this, el);\r\n\t this.currentElement = el;\r\n\t \r\n\t\tthis.locator && position(this.locator,el)\r\n\t for (var i = 0 ; i < len; i++) {\r\n\t var namespaceURI = attrs.getURI(i);\r\n\t var value = attrs.getValue(i);\r\n\t var qName = attrs.getQName(i);\r\n\t\t\tvar attr = doc.createAttributeNS(namespaceURI, qName);\r\n\t\t\tthis.locator &&position(attrs.getLocator(i),attr);\r\n\t\t\tattr.value = attr.nodeValue = value;\r\n\t\t\tel.setAttributeNode(attr)\r\n\t }\r\n\t},\r\n\tendElement:function(namespaceURI, localName, qName) {\r\n\t\tvar current = this.currentElement\r\n\t\tvar tagName = current.tagName;\r\n\t\tthis.currentElement = current.parentNode;\r\n\t},\r\n\tstartPrefixMapping:function(prefix, uri) {\r\n\t},\r\n\tendPrefixMapping:function(prefix) {\r\n\t},\r\n\tprocessingInstruction:function(target, data) {\r\n\t var ins = this.doc.createProcessingInstruction(target, data);\r\n\t this.locator && position(this.locator,ins)\r\n\t appendElement(this, ins);\r\n\t},\r\n\tignorableWhitespace:function(ch, start, length) {\r\n\t},\r\n\tcharacters:function(chars, start, length) {\r\n\t\tchars = _toString.apply(this,arguments)\r\n\t\t//console.log(chars)\r\n\t\tif(chars){\r\n\t\t\tif (this.cdata) {\r\n\t\t\t\tvar charNode = this.doc.createCDATASection(chars);\r\n\t\t\t} else {\r\n\t\t\t\tvar charNode = this.doc.createTextNode(chars);\r\n\t\t\t}\r\n\t\t\tif(this.currentElement){\r\n\t\t\t\tthis.currentElement.appendChild(charNode);\r\n\t\t\t}else if(/^\\s*$/.test(chars)){\r\n\t\t\t\tthis.doc.appendChild(charNode);\r\n\t\t\t\t//process xml\r\n\t\t\t}\r\n\t\t\tthis.locator && position(this.locator,charNode)\r\n\t\t}\r\n\t},\r\n\tskippedEntity:function(name) {\r\n\t},\r\n\tendDocument:function() {\r\n\t\tthis.doc.normalize();\r\n\t},\r\n\tsetDocumentLocator:function (locator) {\r\n\t if(this.locator = locator){// && !('lineNumber' in locator)){\r\n\t \tlocator.lineNumber = 0;\r\n\t }\r\n\t},\r\n\t//LexicalHandler\r\n\tcomment:function(chars, start, length) {\r\n\t\tchars = _toString.apply(this,arguments)\r\n\t var comm = this.doc.createComment(chars);\r\n\t this.locator && position(this.locator,comm)\r\n\t appendElement(this, comm);\r\n\t},\r\n\t\r\n\tstartCDATA:function() {\r\n\t //used in characters() methods\r\n\t this.cdata = true;\r\n\t},\r\n\tendCDATA:function() {\r\n\t this.cdata = false;\r\n\t},\r\n\t\r\n\tstartDTD:function(name, publicId, systemId) {\r\n\t\tvar impl = this.doc.implementation;\r\n\t if (impl && impl.createDocumentType) {\r\n\t var dt = impl.createDocumentType(name, publicId, systemId);\r\n\t this.locator && position(this.locator,dt)\r\n\t appendElement(this, dt);\r\n\t }\r\n\t},\r\n\t/**\r\n\t * @see org.xml.sax.ErrorHandler\r\n\t * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html\r\n\t */\r\n\twarning:function(error) {\r\n\t\tconsole.warn('[xmldom warning]\\t'+error,_locator(this.locator));\r\n\t},\r\n\terror:function(error) {\r\n\t\tconsole.error('[xmldom error]\\t'+error,_locator(this.locator));\r\n\t},\r\n\tfatalError:function(error) {\r\n\t\tconsole.error('[xmldom fatalError]\\t'+error,_locator(this.locator));\r\n\t throw error;\r\n\t}\r\n}\r\nfunction _locator(l){\r\n\tif(l){\r\n\t\treturn '\\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'\r\n\t}\r\n}\r\nfunction _toString(chars,start,length){\r\n\tif(typeof chars == 'string'){\r\n\t\treturn chars.substr(start,length)\r\n\t}else{//java sax connect width xmldom on rhino(what about: \"? && !(chars instanceof String)\")\r\n\t\tif(chars.length >= start+length || start){\r\n\t\t\treturn new java.lang.String(chars,start,length)+'';\r\n\t\t}\r\n\t\treturn chars;\r\n\t}\r\n}\r\n\r\n/*\r\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html\r\n * used method of org.xml.sax.ext.LexicalHandler:\r\n * #comment(chars, start, length)\r\n * #startCDATA()\r\n * #endCDATA()\r\n * #startDTD(name, publicId, systemId)\r\n *\r\n *\r\n * IGNORED method of org.xml.sax.ext.LexicalHandler:\r\n * #endDTD()\r\n * #startEntity(name)\r\n * #endEntity(name)\r\n *\r\n *\r\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html\r\n * IGNORED method of org.xml.sax.ext.DeclHandler\r\n * \t#attributeDecl(eName, aName, type, mode, value)\r\n * #elementDecl(name, model)\r\n * #externalEntityDecl(name, publicId, systemId)\r\n * #internalEntityDecl(name, value)\r\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html\r\n * IGNORED method of org.xml.sax.EntityResolver2\r\n * #resolveEntity(String name,String publicId,String baseURI,String systemId)\r\n * #resolveEntity(publicId, systemId)\r\n * #getExternalSubset(name, baseURI)\r\n * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html\r\n * IGNORED method of org.xml.sax.DTDHandler\r\n * #notationDecl(name, publicId, systemId) {};\r\n * #unparsedEntityDecl(name, publicId, systemId, notationName) {};\r\n */\r\n\"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl\".replace(/\\w+/g,function(key){\r\n\tDOMHandler.prototype[key] = function(){return null}\r\n})\r\n\r\n/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */\r\nfunction appendElement (hander,node) {\r\n if (!hander.currentElement) {\r\n hander.doc.appendChild(node);\r\n } else {\r\n hander.currentElement.appendChild(node);\r\n }\r\n}//appendChild and setAttributeNS are preformance key\r\n\r\n//if(typeof require == 'function'){\r\n\tvar XMLReader = require('./sax').XMLReader;\r\n\tvar DOMImplementation = exports.DOMImplementation = require('./dom').DOMImplementation;\r\n\texports.XMLSerializer = require('./dom').XMLSerializer ;\r\n\texports.DOMParser = DOMParser;\r\n//}\r\n","/*! @name mpd-parser @version 0.10.0 @license Apache-2.0 */\nimport resolveUrl from '@videojs/vhs-utils/dist/resolve-url';\nimport window from 'global/window';\nimport decodeB64ToUint8Array from '@videojs/vhs-utils/dist/decode-b64-to-uint8-array';\nimport { DOMParser } from 'xmldom';\n\nvar version = \"0.10.0\";\n\nvar isObject = function isObject(obj) {\n return !!obj && typeof obj === 'object';\n};\n\nvar merge = function merge() {\n for (var _len = arguments.length, objects = new Array(_len), _key = 0; _key < _len; _key++) {\n objects[_key] = arguments[_key];\n }\n\n return objects.reduce(function (result, source) {\n Object.keys(source).forEach(function (key) {\n if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n result[key] = result[key].concat(source[key]);\n } else if (isObject(result[key]) && isObject(source[key])) {\n result[key] = merge(result[key], source[key]);\n } else {\n result[key] = source[key];\n }\n });\n return result;\n }, {});\n};\nvar values = function values(o) {\n return Object.keys(o).map(function (k) {\n return o[k];\n });\n};\n\nvar range = function range(start, end) {\n var result = [];\n\n for (var i = start; i < end; i++) {\n result.push(i);\n }\n\n return result;\n};\nvar flatten = function flatten(lists) {\n return lists.reduce(function (x, y) {\n return x.concat(y);\n }, []);\n};\nvar from = function from(list) {\n if (!list.length) {\n return [];\n }\n\n var result = [];\n\n for (var i = 0; i < list.length; i++) {\n result.push(list[i]);\n }\n\n return result;\n};\nvar findIndexes = function findIndexes(l, key) {\n return l.reduce(function (a, e, i) {\n if (e[key]) {\n a.push(i);\n }\n\n return a;\n }, []);\n};\n\nvar errors = {\n INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n DASH_INVALID_XML: 'DASH_INVALID_XML',\n NO_BASE_URL: 'NO_BASE_URL',\n MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n};\n\n/**\n * @typedef {Object} SingleUri\n * @property {string} uri - relative location of segment\n * @property {string} resolvedUri - resolved location of segment\n * @property {Object} byterange - Object containing information on how to make byte range\n * requests following byte-range-spec per RFC2616.\n * @property {String} byterange.length - length of range request\n * @property {String} byterange.offset - byte offset of range request\n *\n * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n */\n\n/**\n * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n * that conforms to how m3u8-parser is structured\n *\n * @see https://github.com/videojs/m3u8-parser\n *\n * @param {string} baseUrl - baseUrl provided by nodes\n * @param {string} source - source url for segment\n * @param {string} range - optional range used for range calls,\n * follows RFC 2616, Clause 14.35.1\n * @return {SingleUri} full segment information transformed into a format similar\n * to m3u8-parser\n */\n\nvar urlTypeToSegment = function urlTypeToSegment(_ref) {\n var _ref$baseUrl = _ref.baseUrl,\n baseUrl = _ref$baseUrl === void 0 ? '' : _ref$baseUrl,\n _ref$source = _ref.source,\n source = _ref$source === void 0 ? '' : _ref$source,\n _ref$range = _ref.range,\n range = _ref$range === void 0 ? '' : _ref$range,\n _ref$indexRange = _ref.indexRange,\n indexRange = _ref$indexRange === void 0 ? '' : _ref$indexRange;\n var segment = {\n uri: source,\n resolvedUri: resolveUrl(baseUrl || '', source)\n };\n\n if (range || indexRange) {\n var rangeStr = range ? range : indexRange;\n var ranges = rangeStr.split('-');\n var startRange = parseInt(ranges[0], 10);\n var endRange = parseInt(ranges[1], 10); // byterange should be inclusive according to\n // RFC 2616, Clause 14.35.1\n\n segment.byterange = {\n length: endRange - startRange + 1,\n offset: startRange\n };\n }\n\n return segment;\n};\nvar byteRangeToString = function byteRangeToString(byterange) {\n // `endRange` is one less than `offset + length` because the HTTP range\n // header uses inclusive ranges\n var endRange = byterange.offset + byterange.length - 1;\n return byterange.offset + \"-\" + endRange;\n};\n\n/**\n * Functions for calculating the range of available segments in static and dynamic\n * manifests.\n */\n\nvar segmentRange = {\n /**\n * Returns the entire range of available segments for a static MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n static: function _static(attributes) {\n var duration = attributes.duration,\n _attributes$timescale = attributes.timescale,\n timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n sourceDuration = attributes.sourceDuration;\n return {\n start: 0,\n end: Math.ceil(sourceDuration / (duration / timescale))\n };\n },\n\n /**\n * Returns the current live window range of available segments for a dynamic MPD\n *\n * @param {Object} attributes\n * Inheritied MPD attributes\n * @return {{ start: number, end: number }}\n * The start and end numbers for available segments\n */\n dynamic: function dynamic(attributes) {\n var NOW = attributes.NOW,\n clientOffset = attributes.clientOffset,\n availabilityStartTime = attributes.availabilityStartTime,\n _attributes$timescale2 = attributes.timescale,\n timescale = _attributes$timescale2 === void 0 ? 1 : _attributes$timescale2,\n duration = attributes.duration,\n _attributes$start = attributes.start,\n start = _attributes$start === void 0 ? 0 : _attributes$start,\n _attributes$minimumUp = attributes.minimumUpdatePeriod,\n minimumUpdatePeriod = _attributes$minimumUp === void 0 ? 0 : _attributes$minimumUp,\n _attributes$timeShift = attributes.timeShiftBufferDepth,\n timeShiftBufferDepth = _attributes$timeShift === void 0 ? Infinity : _attributes$timeShift;\n var now = (NOW + clientOffset) / 1000;\n var periodStartWC = availabilityStartTime + start;\n var periodEndWC = now + minimumUpdatePeriod;\n var periodDuration = periodEndWC - periodStartWC;\n var segmentCount = Math.ceil(periodDuration * timescale / duration);\n var availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n var availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n return {\n start: Math.max(0, availableStart),\n end: Math.min(segmentCount, availableEnd)\n };\n }\n};\n/**\n * Maps a range of numbers to objects with information needed to build the corresponding\n * segment list\n *\n * @name toSegmentsCallback\n * @function\n * @param {number} number\n * Number of the segment\n * @param {number} index\n * Index of the number in the range list\n * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n * Object with segment timing and duration info\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping a range of numbers to\n * information needed to build the segment list.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {toSegmentsCallback}\n * Callback map function\n */\n\nvar toSegments = function toSegments(attributes) {\n return function (number, index) {\n var duration = attributes.duration,\n _attributes$timescale3 = attributes.timescale,\n timescale = _attributes$timescale3 === void 0 ? 1 : _attributes$timescale3,\n periodIndex = attributes.periodIndex,\n _attributes$startNumb = attributes.startNumber,\n startNumber = _attributes$startNumb === void 0 ? 1 : _attributes$startNumb;\n return {\n number: startNumber + number,\n duration: duration / timescale,\n timeline: periodIndex,\n time: index * duration\n };\n };\n};\n/**\n * Returns a list of objects containing segment timing and duration info used for\n * building the list of segments. This uses the @duration attribute specified\n * in the MPD manifest to derive the range of segments.\n *\n * @param {Object} attributes\n * Inherited MPD attributes\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nvar parseByDuration = function parseByDuration(attributes) {\n var _attributes$type = attributes.type,\n type = _attributes$type === void 0 ? 'static' : _attributes$type,\n duration = attributes.duration,\n _attributes$timescale4 = attributes.timescale,\n timescale = _attributes$timescale4 === void 0 ? 1 : _attributes$timescale4,\n sourceDuration = attributes.sourceDuration;\n\n var _segmentRange$type = segmentRange[type](attributes),\n start = _segmentRange$type.start,\n end = _segmentRange$type.end;\n\n var segments = range(start, end).map(toSegments(attributes));\n\n if (type === 'static') {\n var index = segments.length - 1; // final segment may be less than full segment duration\n\n segments[index].duration = sourceDuration - duration / timescale * index;\n }\n\n return segments;\n};\n\n/**\n * Translates SegmentBase into a set of segments.\n * (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @return {Object.} list of segments\n */\n\nvar segmentsFromBase = function segmentsFromBase(attributes) {\n var baseUrl = attributes.baseUrl,\n _attributes$initializ = attributes.initialization,\n initialization = _attributes$initializ === void 0 ? {} : _attributes$initializ,\n sourceDuration = attributes.sourceDuration,\n _attributes$timescale = attributes.timescale,\n timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n _attributes$indexRang = attributes.indexRange,\n indexRange = _attributes$indexRang === void 0 ? '' : _attributes$indexRang,\n duration = attributes.duration; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n if (!baseUrl) {\n throw new Error(errors.NO_BASE_URL);\n }\n\n var initSegment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n var segment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: baseUrl,\n indexRange: indexRange\n });\n segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n // (since SegmentBase is only for one total segment)\n\n if (duration) {\n var segmentTimeInfo = parseByDuration(attributes);\n\n if (segmentTimeInfo.length) {\n segment.duration = segmentTimeInfo[0].duration;\n segment.timeline = segmentTimeInfo[0].timeline;\n }\n } else if (sourceDuration) {\n segment.duration = sourceDuration / timescale;\n segment.timeline = 0;\n } // This is used for mediaSequence\n\n\n segment.number = 0;\n return [segment];\n};\n/**\n * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist\n * according to the sidx information given.\n *\n * playlist.sidx has metadadata about the sidx where-as the sidx param\n * is the parsed sidx box itself.\n *\n * @param {Object} playlist the playlist to update the sidx information for\n * @param {Object} sidx the parsed sidx box\n * @return {Object} the playlist object with the updated sidx information\n */\n\nvar addSegmentsToPlaylist = function addSegmentsToPlaylist(playlist, sidx, baseUrl) {\n // Retain init segment information\n var initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial master manifest parsing\n\n var sourceDuration = playlist.sidx.duration; // Retain source timeline\n\n var timeline = playlist.timeline || 0;\n var sidxByteRange = playlist.sidx.byterange;\n var sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx\n\n var timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes\n\n var mediaReferences = sidx.references.filter(function (r) {\n return r.referenceType !== 1;\n });\n var segments = []; // firstOffset is the offset from the end of the sidx box\n\n var startIndex = sidxEnd + sidx.firstOffset;\n\n for (var i = 0; i < mediaReferences.length; i++) {\n var reference = sidx.references[i]; // size of the referenced (sub)segment\n\n var size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale\n // this will be converted to seconds when generating segments\n\n var duration = reference.subsegmentDuration; // should be an inclusive range\n\n var endIndex = startIndex + size - 1;\n var indexRange = startIndex + \"-\" + endIndex;\n var attributes = {\n baseUrl: baseUrl,\n timescale: timescale,\n timeline: timeline,\n // this is used in parseByDuration\n periodIndex: timeline,\n duration: duration,\n sourceDuration: sourceDuration,\n indexRange: indexRange\n };\n var segment = segmentsFromBase(attributes)[0];\n\n if (initSegment) {\n segment.map = initSegment;\n }\n\n segments.push(segment);\n startIndex += size;\n }\n\n playlist.segments = segments;\n return playlist;\n};\n\nvar mergeDiscontiguousPlaylists = function mergeDiscontiguousPlaylists(playlists) {\n var mergedPlaylists = values(playlists.reduce(function (acc, playlist) {\n // assuming playlist IDs are the same across periods\n // TODO: handle multiperiod where representation sets are not the same\n // across periods\n var name = playlist.attributes.id + (playlist.attributes.lang || ''); // Periods after first\n\n if (acc[name]) {\n var _acc$name$segments;\n\n // first segment of subsequent periods signal a discontinuity\n if (playlist.segments[0]) {\n playlist.segments[0].discontinuity = true;\n }\n\n (_acc$name$segments = acc[name].segments).push.apply(_acc$name$segments, playlist.segments); // bubble up contentProtection, this assumes all DRM content\n // has the same contentProtection\n\n\n if (playlist.attributes.contentProtection) {\n acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n }\n } else {\n // first Period\n acc[name] = playlist;\n }\n\n return acc;\n }, {}));\n return mergedPlaylists.map(function (playlist) {\n playlist.discontinuityStarts = findIndexes(playlist.segments, 'discontinuity');\n return playlist;\n });\n};\n\nvar addSegmentInfoFromSidx = function addSegmentInfoFromSidx(playlists, sidxMapping) {\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n if (!Object.keys(sidxMapping).length) {\n return playlists;\n }\n\n for (var i in playlists) {\n var playlist = playlists[i];\n\n if (!playlist.sidx) {\n continue;\n }\n\n var sidxKey = playlist.sidx.uri + '-' + byteRangeToString(playlist.sidx.byterange);\n var sidxMatch = sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;\n\n if (playlist.sidx && sidxMatch) {\n addSegmentsToPlaylist(playlist, sidxMatch, playlist.sidx.resolvedUri);\n }\n }\n\n return playlists;\n};\n\nvar formatAudioPlaylist = function formatAudioPlaylist(_ref) {\n var _attributes;\n\n var attributes = _ref.attributes,\n segments = _ref.segments,\n sidx = _ref.sidx;\n var playlist = {\n attributes: (_attributes = {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth,\n CODECS: attributes.codecs\n }, _attributes['PROGRAM-ID'] = 1, _attributes),\n uri: '',\n endList: (attributes.type || 'static') === 'static',\n timeline: attributes.periodIndex,\n resolvedUri: '',\n targetDuration: attributes.duration,\n segments: segments,\n mediaSequence: segments.length ? segments[0].number : 1\n };\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n return playlist;\n};\nvar formatVttPlaylist = function formatVttPlaylist(_ref2) {\n var _attributes2;\n\n var attributes = _ref2.attributes,\n segments = _ref2.segments;\n\n if (typeof segments === 'undefined') {\n // vtt tracks may use single file in BaseURL\n segments = [{\n uri: attributes.baseUrl,\n timeline: attributes.periodIndex,\n resolvedUri: attributes.baseUrl || '',\n duration: attributes.sourceDuration,\n number: 0\n }]; // targetDuration should be the same duration as the only segment\n\n attributes.duration = attributes.sourceDuration;\n }\n\n return {\n attributes: (_attributes2 = {\n NAME: attributes.id,\n BANDWIDTH: attributes.bandwidth\n }, _attributes2['PROGRAM-ID'] = 1, _attributes2),\n uri: '',\n endList: (attributes.type || 'static') === 'static',\n timeline: attributes.periodIndex,\n resolvedUri: attributes.baseUrl || '',\n targetDuration: attributes.duration,\n segments: segments,\n mediaSequence: segments.length ? segments[0].number : 1\n };\n};\nvar organizeAudioPlaylists = function organizeAudioPlaylists(playlists, sidxMapping) {\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n var mainPlaylist;\n var formattedPlaylists = playlists.reduce(function (a, playlist) {\n var role = playlist.attributes.role && playlist.attributes.role.value || '';\n var language = playlist.attributes.lang || '';\n var label = 'main';\n\n if (language) {\n var roleLabel = role ? \" (\" + role + \")\" : '';\n label = \"\" + playlist.attributes.lang + roleLabel;\n } // skip if we already have the highest quality audio for a language\n\n\n if (a[label] && a[label].playlists[0].attributes.BANDWIDTH > playlist.attributes.bandwidth) {\n return a;\n }\n\n a[label] = {\n language: language,\n autoselect: true,\n default: role === 'main',\n playlists: addSegmentInfoFromSidx([formatAudioPlaylist(playlist)], sidxMapping),\n uri: ''\n };\n\n if (typeof mainPlaylist === 'undefined' && role === 'main') {\n mainPlaylist = playlist;\n mainPlaylist.default = true;\n }\n\n return a;\n }, {}); // if no playlists have role \"main\", mark the first as main\n\n if (!mainPlaylist) {\n var firstLabel = Object.keys(formattedPlaylists)[0];\n formattedPlaylists[firstLabel].default = true;\n }\n\n return formattedPlaylists;\n};\nvar organizeVttPlaylists = function organizeVttPlaylists(playlists, sidxMapping) {\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n return playlists.reduce(function (a, playlist) {\n var label = playlist.attributes.lang || 'text'; // skip if we already have subtitles\n\n if (a[label]) {\n return a;\n }\n\n a[label] = {\n language: label,\n default: false,\n autoselect: false,\n playlists: addSegmentInfoFromSidx([formatVttPlaylist(playlist)], sidxMapping),\n uri: ''\n };\n return a;\n }, {});\n};\nvar formatVideoPlaylist = function formatVideoPlaylist(_ref3) {\n var _attributes3;\n\n var attributes = _ref3.attributes,\n segments = _ref3.segments,\n sidx = _ref3.sidx;\n var playlist = {\n attributes: (_attributes3 = {\n NAME: attributes.id,\n AUDIO: 'audio',\n SUBTITLES: 'subs',\n RESOLUTION: {\n width: attributes.width,\n height: attributes.height\n },\n CODECS: attributes.codecs,\n BANDWIDTH: attributes.bandwidth\n }, _attributes3['PROGRAM-ID'] = 1, _attributes3),\n uri: '',\n endList: (attributes.type || 'static') === 'static',\n timeline: attributes.periodIndex,\n resolvedUri: '',\n targetDuration: attributes.duration,\n segments: segments,\n mediaSequence: segments.length ? segments[0].number : 1\n };\n\n if (attributes.contentProtection) {\n playlist.contentProtection = attributes.contentProtection;\n }\n\n if (sidx) {\n playlist.sidx = sidx;\n }\n\n return playlist;\n};\nvar toM3u8 = function toM3u8(dashPlaylists, sidxMapping) {\n var _mediaGroups;\n\n if (sidxMapping === void 0) {\n sidxMapping = {};\n }\n\n if (!dashPlaylists.length) {\n return {};\n } // grab all master attributes\n\n\n var _dashPlaylists$0$attr = dashPlaylists[0].attributes,\n duration = _dashPlaylists$0$attr.sourceDuration,\n _dashPlaylists$0$attr2 = _dashPlaylists$0$attr.type,\n type = _dashPlaylists$0$attr2 === void 0 ? 'static' : _dashPlaylists$0$attr2,\n suggestedPresentationDelay = _dashPlaylists$0$attr.suggestedPresentationDelay,\n _dashPlaylists$0$attr3 = _dashPlaylists$0$attr.minimumUpdatePeriod,\n minimumUpdatePeriod = _dashPlaylists$0$attr3 === void 0 ? 0 : _dashPlaylists$0$attr3;\n\n var videoOnly = function videoOnly(_ref4) {\n var attributes = _ref4.attributes;\n return attributes.mimeType === 'video/mp4' || attributes.contentType === 'video';\n };\n\n var audioOnly = function audioOnly(_ref5) {\n var attributes = _ref5.attributes;\n return attributes.mimeType === 'audio/mp4' || attributes.contentType === 'audio';\n };\n\n var vttOnly = function vttOnly(_ref6) {\n var attributes = _ref6.attributes;\n return attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n };\n\n var videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n var audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n var vttPlaylists = dashPlaylists.filter(vttOnly);\n var master = {\n allowCache: true,\n discontinuityStarts: [],\n segments: [],\n endList: true,\n mediaGroups: (_mediaGroups = {\n AUDIO: {},\n VIDEO: {}\n }, _mediaGroups['CLOSED-CAPTIONS'] = {}, _mediaGroups.SUBTITLES = {}, _mediaGroups),\n uri: '',\n duration: duration,\n playlists: addSegmentInfoFromSidx(videoPlaylists, sidxMapping),\n minimumUpdatePeriod: minimumUpdatePeriod * 1000\n };\n\n if (type === 'dynamic') {\n master.suggestedPresentationDelay = suggestedPresentationDelay;\n }\n\n if (audioPlaylists.length) {\n master.mediaGroups.AUDIO.audio = organizeAudioPlaylists(audioPlaylists, sidxMapping);\n }\n\n if (vttPlaylists.length) {\n master.mediaGroups.SUBTITLES.subs = organizeVttPlaylists(vttPlaylists, sidxMapping);\n }\n\n return master;\n};\n\n/**\n * Calculates the R (repetition) value for a live stream (for the final segment\n * in a manifest where the r value is negative 1)\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {number} time\n * current time (typically the total time up until the final segment)\n * @param {number} duration\n * duration property for the given \n *\n * @return {number}\n * R value to reach the end of the given period\n */\nvar getLiveRValue = function getLiveRValue(attributes, time, duration) {\n var NOW = attributes.NOW,\n clientOffset = attributes.clientOffset,\n availabilityStartTime = attributes.availabilityStartTime,\n _attributes$timescale = attributes.timescale,\n timescale = _attributes$timescale === void 0 ? 1 : _attributes$timescale,\n _attributes$start = attributes.start,\n start = _attributes$start === void 0 ? 0 : _attributes$start,\n _attributes$minimumUp = attributes.minimumUpdatePeriod,\n minimumUpdatePeriod = _attributes$minimumUp === void 0 ? 0 : _attributes$minimumUp;\n var now = (NOW + clientOffset) / 1000;\n var periodStartWC = availabilityStartTime + start;\n var periodEndWC = now + minimumUpdatePeriod;\n var periodDuration = periodEndWC - periodStartWC;\n return Math.ceil((periodDuration * timescale - time) / duration);\n};\n/**\n * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment\n * timing and duration\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n *\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\n\nvar parseByTimeline = function parseByTimeline(attributes, segmentTimeline) {\n var _attributes$type = attributes.type,\n type = _attributes$type === void 0 ? 'static' : _attributes$type,\n _attributes$minimumUp2 = attributes.minimumUpdatePeriod,\n minimumUpdatePeriod = _attributes$minimumUp2 === void 0 ? 0 : _attributes$minimumUp2,\n _attributes$media = attributes.media,\n media = _attributes$media === void 0 ? '' : _attributes$media,\n sourceDuration = attributes.sourceDuration,\n _attributes$timescale2 = attributes.timescale,\n timescale = _attributes$timescale2 === void 0 ? 1 : _attributes$timescale2,\n _attributes$startNumb = attributes.startNumber,\n startNumber = _attributes$startNumb === void 0 ? 1 : _attributes$startNumb,\n timeline = attributes.periodIndex;\n var segments = [];\n var time = -1;\n\n for (var sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {\n var S = segmentTimeline[sIndex];\n var duration = S.d;\n var repeat = S.r || 0;\n var segmentTime = S.t || 0;\n\n if (time < 0) {\n // first segment\n time = segmentTime;\n }\n\n if (segmentTime && segmentTime > time) {\n // discontinuity\n // TODO: How to handle this type of discontinuity\n // timeline++ here would treat it like HLS discontuity and content would\n // get appended without gap\n // E.G.\n // \n // \n // \n // \n // would have $Time$ values of [0, 1, 2, 5]\n // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)\n // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)\n // does the value of sourceDuration consider this when calculating arbitrary\n // negative @r repeat value?\n // E.G. Same elements as above with this added at the end\n // \n // with a sourceDuration of 10\n // Would the 2 gaps be included in the time duration calculations resulting in\n // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments\n // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?\n time = segmentTime;\n }\n\n var count = void 0;\n\n if (repeat < 0) {\n var nextS = sIndex + 1;\n\n if (nextS === segmentTimeline.length) {\n // last segment\n if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {\n count = getLiveRValue(attributes, time, duration);\n } else {\n // TODO: This may be incorrect depending on conclusion of TODO above\n count = (sourceDuration * timescale - time) / duration;\n }\n } else {\n count = (segmentTimeline[nextS].t - time) / duration;\n }\n } else {\n count = repeat + 1;\n }\n\n var end = startNumber + segments.length + count;\n var number = startNumber + segments.length;\n\n while (number < end) {\n segments.push({\n number: number,\n duration: duration / timescale,\n time: time,\n timeline: timeline\n });\n time += duration;\n number++;\n }\n }\n\n return segments;\n};\n\nvar identifierPattern = /\\$([A-z]*)(?:(%0)([0-9]+)d)?\\$/g;\n/**\n * Replaces template identifiers with corresponding values. To be used as the callback\n * for String.prototype.replace\n *\n * @name replaceCallback\n * @function\n * @param {string} match\n * Entire match of identifier\n * @param {string} identifier\n * Name of matched identifier\n * @param {string} format\n * Format tag string. Its presence indicates that padding is expected\n * @param {string} width\n * Desired length of the replaced value. Values less than this width shall be left\n * zero padded\n * @return {string}\n * Replacement for the matched identifier\n */\n\n/**\n * Returns a function to be used as a callback for String.prototype.replace to replace\n * template identifiers\n *\n * @param {Obect} values\n * Object containing values that shall be used to replace known identifiers\n * @param {number} values.RepresentationID\n * Value of the Representation@id attribute\n * @param {number} values.Number\n * Number of the corresponding segment\n * @param {number} values.Bandwidth\n * Value of the Representation@bandwidth attribute.\n * @param {number} values.Time\n * Timestamp value of the corresponding segment\n * @return {replaceCallback}\n * Callback to be used with String.prototype.replace to replace identifiers\n */\n\nvar identifierReplacement = function identifierReplacement(values) {\n return function (match, identifier, format, width) {\n if (match === '$$') {\n // escape sequence\n return '$';\n }\n\n if (typeof values[identifier] === 'undefined') {\n return match;\n }\n\n var value = '' + values[identifier];\n\n if (identifier === 'RepresentationID') {\n // Format tag shall not be present with RepresentationID\n return value;\n }\n\n if (!format) {\n width = 1;\n } else {\n width = parseInt(width, 10);\n }\n\n if (value.length >= width) {\n return value;\n }\n\n return \"\" + new Array(width - value.length + 1).join('0') + value;\n };\n};\n/**\n * Constructs a segment url from a template string\n *\n * @param {string} url\n * Template string to construct url from\n * @param {Obect} values\n * Object containing values that shall be used to replace known identifiers\n * @param {number} values.RepresentationID\n * Value of the Representation@id attribute\n * @param {number} values.Number\n * Number of the corresponding segment\n * @param {number} values.Bandwidth\n * Value of the Representation@bandwidth attribute.\n * @param {number} values.Time\n * Timestamp value of the corresponding segment\n * @return {string}\n * Segment url with identifiers replaced\n */\n\nvar constructTemplateUrl = function constructTemplateUrl(url, values) {\n return url.replace(identifierPattern, identifierReplacement(values));\n};\n/**\n * Generates a list of objects containing timing and duration information about each\n * segment needed to generate segment uris and the complete segment object\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {{number: number, duration: number, time: number, timeline: number}[]}\n * List of Objects with segment timing and duration info\n */\n\nvar parseTemplateInfo = function parseTemplateInfo(attributes, segmentTimeline) {\n if (!attributes.duration && !segmentTimeline) {\n // if neither @duration or SegmentTimeline are present, then there shall be exactly\n // one media segment\n return [{\n number: attributes.startNumber || 1,\n duration: attributes.sourceDuration,\n time: 0,\n timeline: attributes.periodIndex\n }];\n }\n\n if (attributes.duration) {\n return parseByDuration(attributes);\n }\n\n return parseByTimeline(attributes, segmentTimeline);\n};\n/**\n * Generates a list of segments using information provided by the SegmentTemplate element\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object[]}\n * List of segment objects\n */\n\nvar segmentsFromTemplate = function segmentsFromTemplate(attributes, segmentTimeline) {\n var templateValues = {\n RepresentationID: attributes.id,\n Bandwidth: attributes.bandwidth || 0\n };\n var _attributes$initializ = attributes.initialization,\n initialization = _attributes$initializ === void 0 ? {\n sourceURL: '',\n range: ''\n } : _attributes$initializ;\n var mapSegment = urlTypeToSegment({\n baseUrl: attributes.baseUrl,\n source: constructTemplateUrl(initialization.sourceURL, templateValues),\n range: initialization.range\n });\n var segments = parseTemplateInfo(attributes, segmentTimeline);\n return segments.map(function (segment) {\n templateValues.Number = segment.number;\n templateValues.Time = segment.time;\n var uri = constructTemplateUrl(attributes.media || '', templateValues);\n return {\n uri: uri,\n timeline: segment.timeline,\n duration: segment.duration,\n resolvedUri: resolveUrl(attributes.baseUrl || '', uri),\n map: mapSegment,\n number: segment.number\n };\n });\n};\n\n/**\n * Converts a (of type URLType from the DASH spec 5.3.9.2 Table 14)\n * to an object that matches the output of a segment in videojs/mpd-parser\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object} segmentUrl\n * node to translate into a segment object\n * @return {Object} translated segment object\n */\n\nvar SegmentURLToSegmentObject = function SegmentURLToSegmentObject(attributes, segmentUrl) {\n var baseUrl = attributes.baseUrl,\n _attributes$initializ = attributes.initialization,\n initialization = _attributes$initializ === void 0 ? {} : _attributes$initializ;\n var initSegment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: initialization.sourceURL,\n range: initialization.range\n });\n var segment = urlTypeToSegment({\n baseUrl: baseUrl,\n source: segmentUrl.media,\n range: segmentUrl.mediaRange\n });\n segment.map = initSegment;\n return segment;\n};\n/**\n * Generates a list of segments using information provided by the SegmentList element\n * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of nodes. Each\n * node should be translated into segment.\n *\n * @param {Object} attributes\n * Object containing all inherited attributes from parent elements with attribute\n * names as keys\n * @param {Object[]|undefined} segmentTimeline\n * List of objects representing the attributes of each S element contained within\n * the SegmentTimeline element\n * @return {Object.} list of segments\n */\n\n\nvar segmentsFromList = function segmentsFromList(attributes, segmentTimeline) {\n var duration = attributes.duration,\n _attributes$segmentUr = attributes.segmentUrls,\n segmentUrls = _attributes$segmentUr === void 0 ? [] : _attributes$segmentUr; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n if (!duration && !segmentTimeline || duration && segmentTimeline) {\n throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n }\n\n var segmentUrlMap = segmentUrls.map(function (segmentUrlObject) {\n return SegmentURLToSegmentObject(attributes, segmentUrlObject);\n });\n var segmentTimeInfo;\n\n if (duration) {\n segmentTimeInfo = parseByDuration(attributes);\n }\n\n if (segmentTimeline) {\n segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n }\n\n var segments = segmentTimeInfo.map(function (segmentTime, index) {\n if (segmentUrlMap[index]) {\n var segment = segmentUrlMap[index];\n segment.timeline = segmentTime.timeline;\n segment.duration = segmentTime.duration;\n segment.number = segmentTime.number;\n return segment;\n } // Since we're mapping we should get rid of any blank segments (in case\n // the given SegmentTimeline is handling for more elements than we have\n // SegmentURLs for).\n\n }).filter(function (segment) {\n return segment;\n });\n return segments;\n};\n\nvar generateSegments = function generateSegments(_ref) {\n var attributes = _ref.attributes,\n segmentInfo = _ref.segmentInfo;\n var segmentAttributes;\n var segmentsFn;\n\n if (segmentInfo.template) {\n segmentsFn = segmentsFromTemplate;\n segmentAttributes = merge(attributes, segmentInfo.template);\n } else if (segmentInfo.base) {\n segmentsFn = segmentsFromBase;\n segmentAttributes = merge(attributes, segmentInfo.base);\n } else if (segmentInfo.list) {\n segmentsFn = segmentsFromList;\n segmentAttributes = merge(attributes, segmentInfo.list);\n }\n\n var segmentsInfo = {\n attributes: attributes\n };\n\n if (!segmentsFn) {\n return segmentsInfo;\n }\n\n var segments = segmentsFn(segmentAttributes, segmentInfo.timeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n // must be in seconds. Since we've generated the segment list, we no longer need\n // @duration to be in @timescale units, so we can convert it here.\n\n if (segmentAttributes.duration) {\n var _segmentAttributes = segmentAttributes,\n duration = _segmentAttributes.duration,\n _segmentAttributes$ti = _segmentAttributes.timescale,\n timescale = _segmentAttributes$ti === void 0 ? 1 : _segmentAttributes$ti;\n segmentAttributes.duration = duration / timescale;\n } else if (segments.length) {\n // if there is no @duration attribute, use the largest segment duration as\n // as target duration\n segmentAttributes.duration = segments.reduce(function (max, segment) {\n return Math.max(max, Math.ceil(segment.duration));\n }, 0);\n } else {\n segmentAttributes.duration = 0;\n }\n\n segmentsInfo.attributes = segmentAttributes;\n segmentsInfo.segments = segments; // This is a sidx box without actual segment information\n\n if (segmentInfo.base && segmentAttributes.indexRange) {\n segmentsInfo.sidx = segments[0];\n segmentsInfo.segments = [];\n }\n\n return segmentsInfo;\n};\nvar toPlaylists = function toPlaylists(representations) {\n return representations.map(generateSegments);\n};\n\nvar findChildren = function findChildren(element, name) {\n return from(element.childNodes).filter(function (_ref) {\n var tagName = _ref.tagName;\n return tagName === name;\n });\n};\nvar getContent = function getContent(element) {\n return element.textContent.trim();\n};\n\nvar parseDuration = function parseDuration(str) {\n var SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n var SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n var SECONDS_IN_DAY = 24 * 60 * 60;\n var SECONDS_IN_HOUR = 60 * 60;\n var SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n var durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n var match = durationRegex.exec(str);\n\n if (!match) {\n return 0;\n }\n\n var _match$slice = match.slice(1),\n year = _match$slice[0],\n month = _match$slice[1],\n day = _match$slice[2],\n hour = _match$slice[3],\n minute = _match$slice[4],\n second = _match$slice[5];\n\n return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n};\nvar parseDate = function parseDate(str) {\n // Date format without timezone according to ISO 8601\n // YYY-MM-DDThh:mm:ss.ssssss\n var dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n // expressed by ending with 'Z'\n\n if (dateRegex.test(str)) {\n str += 'Z';\n }\n\n return Date.parse(str);\n};\n\nvar parsers = {\n /**\n * Specifies the duration of the entire Media Presentation. Format is a duration string\n * as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n mediaPresentationDuration: function mediaPresentationDuration(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the Segment availability start time for all Segments referred to in this\n * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n * time. Format is a date string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The date as seconds from unix epoch\n */\n availabilityStartTime: function availabilityStartTime(value) {\n return parseDate(value) / 1000;\n },\n\n /**\n * Specifies the smallest period between potential changes to the MPD. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n minimumUpdatePeriod: function minimumUpdatePeriod(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the suggested presentation delay. Format is a\n * duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n suggestedPresentationDelay: function suggestedPresentationDelay(value) {\n return parseDuration(value);\n },\n\n /**\n * specifices the type of mpd. Can be either \"static\" or \"dynamic\"\n *\n * @param {string} value\n * value of attribute as a string\n *\n * @return {string}\n * The type as a string\n */\n type: function type(value) {\n return value;\n },\n\n /**\n * Specifies the duration of the smallest time shifting buffer for any Representation\n * in the MPD. Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n timeShiftBufferDepth: function timeShiftBufferDepth(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n * Format is a duration string as specified in ISO 8601\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The duration in seconds\n */\n start: function start(value) {\n return parseDuration(value);\n },\n\n /**\n * Specifies the width of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed width\n */\n width: function width(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the height of the visual presentation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed height\n */\n height: function height(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the bitrate of the representation\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed bandwidth\n */\n bandwidth: function bandwidth(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the number of the first Media Segment in this Representation in the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n startNumber: function startNumber(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the timescale in units per seconds\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The aprsed timescale\n */\n timescale: function timescale(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the constant approximate Segment duration\n * NOTE: The element also contains an @duration attribute. This duration\n * specifies the duration of the Period. This attribute is currently not\n * supported by the rest of the parser, however we still check for it to prevent\n * errors.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n duration: function duration(value) {\n var parsedValue = parseInt(value, 10);\n\n if (isNaN(parsedValue)) {\n return parseDuration(value);\n }\n\n return parsedValue;\n },\n\n /**\n * Specifies the Segment duration, in units of the value of the @timescale.\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed duration\n */\n d: function d(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the MPD start time, in @timescale units, the first Segment in the series\n * starts relative to the beginning of the Period\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed time\n */\n t: function t(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Specifies the repeat count of the number of following contiguous Segments with the\n * same duration expressed by the value of @d\n *\n * @param {string} value\n * value of attribute as a string\n * @return {number}\n * The parsed number\n */\n r: function r(value) {\n return parseInt(value, 10);\n },\n\n /**\n * Default parser for all other attributes. Acts as a no-op and just returns the value\n * as a string\n *\n * @param {string} value\n * value of attribute as a string\n * @return {string}\n * Unparsed value\n */\n DEFAULT: function DEFAULT(value) {\n return value;\n }\n};\n/**\n * Gets all the attributes and values of the provided node, parses attributes with known\n * types, and returns an object with attribute names mapped to values.\n *\n * @param {Node} el\n * The node to parse attributes from\n * @return {Object}\n * Object with all attributes of el parsed\n */\n\nvar parseAttributes = function parseAttributes(el) {\n if (!(el && el.attributes)) {\n return {};\n }\n\n return from(el.attributes).reduce(function (a, e) {\n var parseFn = parsers[e.name] || parsers.DEFAULT;\n a[e.name] = parseFn(e.value);\n return a;\n }, {});\n};\n\nvar keySystemsMap = {\n 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'\n};\n/**\n * Builds a list of urls that is the product of the reference urls and BaseURL values\n *\n * @param {string[]} referenceUrls\n * List of reference urls to resolve to\n * @param {Node[]} baseUrlElements\n * List of BaseURL nodes from the mpd\n * @return {string[]}\n * List of resolved urls\n */\n\nvar buildBaseUrls = function buildBaseUrls(referenceUrls, baseUrlElements) {\n if (!baseUrlElements.length) {\n return referenceUrls;\n }\n\n return flatten(referenceUrls.map(function (reference) {\n return baseUrlElements.map(function (baseUrlElement) {\n return resolveUrl(reference, getContent(baseUrlElement));\n });\n }));\n};\n/**\n * Contains all Segment information for its containing AdaptationSet\n *\n * @typedef {Object} SegmentInformation\n * @property {Object|undefined} template\n * Contains the attributes for the SegmentTemplate node\n * @property {Object[]|undefined} timeline\n * Contains a list of atrributes for each S node within the SegmentTimeline node\n * @property {Object|undefined} list\n * Contains the attributes for the SegmentList node\n * @property {Object|undefined} base\n * Contains the attributes for the SegmentBase node\n */\n\n/**\n * Returns all available Segment information contained within the AdaptationSet node\n *\n * @param {Node} adaptationSet\n * The AdaptationSet node to get Segment information from\n * @return {SegmentInformation}\n * The Segment information contained within the provided AdaptationSet\n */\n\nvar getSegmentInformation = function getSegmentInformation(adaptationSet) {\n var segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n var segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n var segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(function (s) {\n return merge({\n tag: 'SegmentURL'\n }, parseAttributes(s));\n });\n var segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n var segmentTimelineParentNode = segmentList || segmentTemplate;\n var segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n var segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n var segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n // @initialization and an node. @initialization can be templated,\n // while the node can have a url and range specified. If the has\n // both @initialization and an subelement we opt to override with\n // the node, as this interaction is not defined in the spec.\n\n var template = segmentTemplate && parseAttributes(segmentTemplate);\n\n if (template && segmentInitialization) {\n template.initialization = segmentInitialization && parseAttributes(segmentInitialization);\n } else if (template && template.initialization) {\n // If it is @initialization we convert it to an object since this is the format that\n // later functions will rely on for the initialization segment. This is only valid\n // for \n template.initialization = {\n sourceURL: template.initialization\n };\n }\n\n var segmentInfo = {\n template: template,\n timeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(function (s) {\n return parseAttributes(s);\n }),\n list: segmentList && merge(parseAttributes(segmentList), {\n segmentUrls: segmentUrls,\n initialization: parseAttributes(segmentInitialization)\n }),\n base: segmentBase && merge(parseAttributes(segmentBase), {\n initialization: parseAttributes(segmentInitialization)\n })\n };\n Object.keys(segmentInfo).forEach(function (key) {\n if (!segmentInfo[key]) {\n delete segmentInfo[key];\n }\n });\n return segmentInfo;\n};\n/**\n * Contains Segment information and attributes needed to construct a Playlist object\n * from a Representation\n *\n * @typedef {Object} RepresentationInformation\n * @property {SegmentInformation} segmentInfo\n * Segment information for this Representation\n * @property {Object} attributes\n * Inherited attributes for this Representation\n */\n\n/**\n * Maps a Representation node to an object containing Segment information and attributes\n *\n * @name inheritBaseUrlsCallback\n * @function\n * @param {Node} representation\n * Representation node from the mpd\n * @return {RepresentationInformation}\n * Representation information needed to construct a Playlist object\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Representation nodes to\n * Segment information and attributes using inherited BaseURL nodes.\n *\n * @param {Object} adaptationSetAttributes\n * Contains attributes inherited by the AdaptationSet\n * @param {string[]} adaptationSetBaseUrls\n * Contains list of resolved base urls inherited by the AdaptationSet\n * @param {SegmentInformation} adaptationSetSegmentInfo\n * Contains Segment information for the AdaptationSet\n * @return {inheritBaseUrlsCallback}\n * Callback map function\n */\n\nvar inheritBaseUrls = function inheritBaseUrls(adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) {\n return function (representation) {\n var repBaseUrlElements = findChildren(representation, 'BaseURL');\n var repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n var attributes = merge(adaptationSetAttributes, parseAttributes(representation));\n var representationSegmentInfo = getSegmentInformation(representation);\n return repBaseUrls.map(function (baseUrl) {\n return {\n segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo),\n attributes: merge(attributes, {\n baseUrl: baseUrl\n })\n };\n });\n };\n};\n/**\n * Tranforms a series of content protection nodes to\n * an object containing pssh data by key system\n *\n * @param {Node[]} contentProtectionNodes\n * Content protection nodes\n * @return {Object}\n * Object containing pssh data by key system\n */\n\nvar generateKeySystemInformation = function generateKeySystemInformation(contentProtectionNodes) {\n return contentProtectionNodes.reduce(function (acc, node) {\n var attributes = parseAttributes(node);\n var keySystem = keySystemsMap[attributes.schemeIdUri];\n\n if (keySystem) {\n acc[keySystem] = {\n attributes: attributes\n };\n var psshNode = findChildren(node, 'cenc:pssh')[0];\n\n if (psshNode) {\n var pssh = getContent(psshNode);\n var psshBuffer = pssh && decodeB64ToUint8Array(pssh);\n acc[keySystem].pssh = psshBuffer;\n }\n }\n\n return acc;\n }, {});\n};\n/**\n * Maps an AdaptationSet node to a list of Representation information objects\n *\n * @name toRepresentationsCallback\n * @function\n * @param {Node} adaptationSet\n * AdaptationSet node from the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n * Representation information objects\n *\n * @param {Object} periodAttributes\n * Contains attributes inherited by the Period\n * @param {string[]} periodBaseUrls\n * Contains list of resolved base urls inherited by the Period\n * @param {string[]} periodSegmentInfo\n * Contains Segment Information at the period level\n * @return {toRepresentationsCallback}\n * Callback map function\n */\n\n\nvar toRepresentations = function toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo) {\n return function (adaptationSet) {\n var adaptationSetAttributes = parseAttributes(adaptationSet);\n var adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n var role = findChildren(adaptationSet, 'Role')[0];\n var roleAttributes = {\n role: parseAttributes(role)\n };\n var attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes);\n var contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n\n if (Object.keys(contentProtection).length) {\n attrs = merge(attrs, {\n contentProtection: contentProtection\n });\n }\n\n var segmentInfo = getSegmentInformation(adaptationSet);\n var representations = findChildren(adaptationSet, 'Representation');\n var adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo);\n return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n };\n};\n/**\n * Maps an Period node to a list of Representation inforamtion objects for all\n * AdaptationSet nodes contained within the Period\n *\n * @name toAdaptationSetsCallback\n * @function\n * @param {Node} period\n * Period node from the mpd\n * @param {number} periodIndex\n * Index of the Period within the mpd\n * @return {RepresentationInformation[]}\n * List of objects containing Representaion information\n */\n\n/**\n * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n * Representation information objects\n *\n * @param {Object} mpdAttributes\n * Contains attributes inherited by the mpd\n * @param {string[]} mpdBaseUrls\n * Contains list of resolved base urls inherited by the mpd\n * @return {toAdaptationSetsCallback}\n * Callback map function\n */\n\nvar toAdaptationSets = function toAdaptationSets(mpdAttributes, mpdBaseUrls) {\n return function (period, index) {\n var periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period, 'BaseURL'));\n var periodAtt = parseAttributes(period);\n var parsedPeriodId = parseInt(periodAtt.id, 10); // fallback to mapping index if Period@id is not a number\n\n var periodIndex = window.isNaN(parsedPeriodId) ? index : parsedPeriodId;\n var periodAttributes = merge(mpdAttributes, {\n periodIndex: periodIndex\n });\n var adaptationSets = findChildren(period, 'AdaptationSet');\n var periodSegmentInfo = getSegmentInformation(period);\n return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n };\n};\n/**\n * Traverses the mpd xml tree to generate a list of Representation information objects\n * that have inherited attributes from parent nodes\n *\n * @param {Node} mpd\n * The root node of the mpd\n * @param {Object} options\n * Available options for inheritAttributes\n * @param {string} options.manifestUri\n * The uri source of the mpd\n * @param {number} options.NOW\n * Current time per DASH IOP. Default is current time in ms since epoch\n * @param {number} options.clientOffset\n * Client time difference from NOW (in milliseconds)\n * @return {RepresentationInformation[]}\n * List of objects containing Representation information\n */\n\nvar inheritAttributes = function inheritAttributes(mpd, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n _options$manifestUri = _options.manifestUri,\n manifestUri = _options$manifestUri === void 0 ? '' : _options$manifestUri,\n _options$NOW = _options.NOW,\n NOW = _options$NOW === void 0 ? Date.now() : _options$NOW,\n _options$clientOffset = _options.clientOffset,\n clientOffset = _options$clientOffset === void 0 ? 0 : _options$clientOffset;\n var periods = findChildren(mpd, 'Period');\n\n if (!periods.length) {\n throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n }\n\n var mpdAttributes = parseAttributes(mpd);\n var mpdBaseUrls = buildBaseUrls([manifestUri], findChildren(mpd, 'BaseURL'));\n mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n mpdAttributes.NOW = NOW;\n mpdAttributes.clientOffset = clientOffset;\n return flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls)));\n};\n\nvar stringToMpdXml = function stringToMpdXml(manifestString) {\n if (manifestString === '') {\n throw new Error(errors.DASH_EMPTY_MANIFEST);\n }\n\n var parser = new DOMParser();\n var xml = parser.parseFromString(manifestString, 'application/xml');\n var mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n\n if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n throw new Error(errors.DASH_INVALID_XML);\n }\n\n return mpd;\n};\n\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} mpd\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\nvar parseUTCTimingScheme = function parseUTCTimingScheme(mpd) {\n var UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n\n if (!UTCTimingNode) {\n return null;\n }\n\n var attributes = parseAttributes(UTCTimingNode);\n\n switch (attributes.schemeIdUri) {\n case 'urn:mpeg:dash:utc:http-head:2014':\n case 'urn:mpeg:dash:utc:http-head:2012':\n attributes.method = 'HEAD';\n break;\n\n case 'urn:mpeg:dash:utc:http-xsdate:2014':\n case 'urn:mpeg:dash:utc:http-iso:2014':\n case 'urn:mpeg:dash:utc:http-xsdate:2012':\n case 'urn:mpeg:dash:utc:http-iso:2012':\n attributes.method = 'GET';\n break;\n\n case 'urn:mpeg:dash:utc:direct:2014':\n case 'urn:mpeg:dash:utc:direct:2012':\n attributes.method = 'DIRECT';\n attributes.value = Date.parse(attributes.value);\n break;\n\n case 'urn:mpeg:dash:utc:http-ntp:2014':\n case 'urn:mpeg:dash:utc:ntp:2014':\n case 'urn:mpeg:dash:utc:sntp:2014':\n default:\n throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n }\n\n return attributes;\n};\n\nvar VERSION = version;\n\nvar parse = function parse(manifestString, options) {\n if (options === void 0) {\n options = {};\n }\n\n return toM3u8(toPlaylists(inheritAttributes(stringToMpdXml(manifestString), options)), options.sidxMapping);\n};\n/**\n * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n *\n * @param {string} manifestString\n * XML string of the MPD manifest\n * @return {Object|null}\n * Attributes of UTCTiming node specified in the manifest. Null if none found\n */\n\n\nvar parseUTCTiming = function parseUTCTiming(manifestString) {\n return parseUTCTimingScheme(stringToMpdXml(manifestString));\n};\n\nexport { VERSION, inheritAttributes, parse, parseUTCTiming, stringToMpdXml, toM3u8, toPlaylists };\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\nvar toUnsigned = function(value) {\n return value >>> 0;\n};\n\nvar toHexString = function(value) {\n return ('00' + value.toString(16)).slice(-2);\n};\n\nmodule.exports = {\n toUnsigned: toUnsigned,\n toHexString: toHexString\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Parse the internal MP4 structure into an equivalent javascript\n * object.\n */\n'use strict';\n\nvar\n inspectMp4,\n textifyMp4,\n toUnsigned = require('../utils/bin').toUnsigned,\n parseMp4Date = function(seconds) {\n return new Date(seconds * 1000 - 2082844800000);\n },\n parseSampleFlags = function(flags) {\n return {\n isLeading: (flags[0] & 0x0c) >>> 2,\n dependsOn: flags[0] & 0x03,\n isDependedOn: (flags[1] & 0xc0) >>> 6,\n hasRedundancy: (flags[1] & 0x30) >>> 4,\n paddingValue: (flags[1] & 0x0e) >>> 1,\n isNonSyncSample: flags[1] & 0x01,\n degradationPriority: (flags[2] << 8) | flags[3]\n };\n },\n /**\n * Returns the string representation of an ASCII encoded four byte buffer.\n * @param buffer {Uint8Array} a four-byte buffer to translate\n * @return {string} the corresponding string\n */\n parseType = function(buffer) {\n var result = '';\n result += String.fromCharCode(buffer[0]);\n result += String.fromCharCode(buffer[1]);\n result += String.fromCharCode(buffer[2]);\n result += String.fromCharCode(buffer[3]);\n return result;\n },\n // Find the data for a box specified by its path\n findBox = function(data, path) {\n var results = [],\n i, size, type, end, subresults;\n\n if (!path.length) {\n // short-circuit the search for empty paths\n return null;\n }\n\n for (i = 0; i < data.byteLength;) {\n size = toUnsigned(data[i] << 24 |\n data[i + 1] << 16 |\n data[i + 2] << 8 |\n data[i + 3]);\n\n type = parseType(data.subarray(i + 4, i + 8));\n\n end = size > 1 ? i + size : data.byteLength;\n\n if (type === path[0]) {\n if (path.length === 1) {\n // this is the end of the path and we've found the box we were\n // looking for\n results.push(data.subarray(i + 8, end));\n } else {\n // recursively search for the next box along the path\n subresults = findBox(data.subarray(i + 8, end), path.slice(1));\n if (subresults.length) {\n results = results.concat(subresults);\n }\n }\n }\n i = end;\n }\n\n // we've finished searching all of data\n return results;\n },\n nalParse = function(avcStream) {\n var\n avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n result = [],\n i,\n length;\n for (i = 0; i + 4 < avcStream.length; i += length) {\n length = avcView.getUint32(i);\n i += 4;\n\n // bail if this doesn't appear to be an H264 stream\n if (length <= 0) {\n result.push('MALFORMED DATA');\n continue;\n }\n\n switch (avcStream[i] & 0x1F) {\n case 0x01:\n result.push('slice_layer_without_partitioning_rbsp');\n break;\n case 0x05:\n result.push('slice_layer_without_partitioning_rbsp_idr');\n break;\n case 0x06:\n result.push('sei_rbsp');\n break;\n case 0x07:\n result.push('seq_parameter_set_rbsp');\n break;\n case 0x08:\n result.push('pic_parameter_set_rbsp');\n break;\n case 0x09:\n result.push('access_unit_delimiter_rbsp');\n break;\n default:\n result.push('UNKNOWN NAL - ' + avcStream[i] & 0x1F);\n break;\n }\n }\n return result;\n },\n\n // registry of handlers for individual mp4 box types\n parse = {\n // codingname, not a first-class box type. stsd entries share the\n // same format as real boxes so the parsing infrastructure can be\n // shared\n avc1: function(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n return {\n dataReferenceIndex: view.getUint16(6),\n width: view.getUint16(24),\n height: view.getUint16(26),\n horizresolution: view.getUint16(28) + (view.getUint16(30) / 16),\n vertresolution: view.getUint16(32) + (view.getUint16(34) / 16),\n frameCount: view.getUint16(40),\n depth: view.getUint16(74),\n config: inspectMp4(data.subarray(78, data.byteLength))\n };\n },\n avcC: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n configurationVersion: data[0],\n avcProfileIndication: data[1],\n profileCompatibility: data[2],\n avcLevelIndication: data[3],\n lengthSizeMinusOne: data[4] & 0x03,\n sps: [],\n pps: []\n },\n numOfSequenceParameterSets = data[5] & 0x1f,\n numOfPictureParameterSets,\n nalSize,\n offset,\n i;\n\n // iterate past any SPSs\n offset = 6;\n for (i = 0; i < numOfSequenceParameterSets; i++) {\n nalSize = view.getUint16(offset);\n offset += 2;\n result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));\n offset += nalSize;\n }\n // iterate past any PPSs\n numOfPictureParameterSets = data[offset];\n offset++;\n for (i = 0; i < numOfPictureParameterSets; i++) {\n nalSize = view.getUint16(offset);\n offset += 2;\n result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize)));\n offset += nalSize;\n }\n return result;\n },\n btrt: function(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n return {\n bufferSizeDB: view.getUint32(0),\n maxBitrate: view.getUint32(4),\n avgBitrate: view.getUint32(8)\n };\n },\n esds: function(data) {\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n esId: (data[6] << 8) | data[7],\n streamPriority: data[8] & 0x1f,\n decoderConfig: {\n objectProfileIndication: data[11],\n streamType: (data[12] >>> 2) & 0x3f,\n bufferSize: (data[13] << 16) | (data[14] << 8) | data[15],\n maxBitrate: (data[16] << 24) |\n (data[17] << 16) |\n (data[18] << 8) |\n data[19],\n avgBitrate: (data[20] << 24) |\n (data[21] << 16) |\n (data[22] << 8) |\n data[23],\n decoderConfigDescriptor: {\n tag: data[24],\n length: data[25],\n audioObjectType: (data[26] >>> 3) & 0x1f,\n samplingFrequencyIndex: ((data[26] & 0x07) << 1) |\n ((data[27] >>> 7) & 0x01),\n channelConfiguration: (data[27] >>> 3) & 0x0f\n }\n }\n };\n },\n ftyp: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n majorBrand: parseType(data.subarray(0, 4)),\n minorVersion: view.getUint32(4),\n compatibleBrands: []\n },\n i = 8;\n while (i < data.byteLength) {\n result.compatibleBrands.push(parseType(data.subarray(i, i + 4)));\n i += 4;\n }\n return result;\n },\n dinf: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n dref: function(data) {\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n dataReferences: inspectMp4(data.subarray(8))\n };\n },\n hdlr: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: view.getUint8(0),\n flags: new Uint8Array(data.subarray(1, 4)),\n handlerType: parseType(data.subarray(8, 12)),\n name: ''\n },\n i = 8;\n\n // parse out the name field\n for (i = 24; i < data.byteLength; i++) {\n if (data[i] === 0x00) {\n // the name field is null-terminated\n i++;\n break;\n }\n result.name += String.fromCharCode(data[i]);\n }\n // decode UTF-8 to javascript's internal representation\n // see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html\n result.name = decodeURIComponent(escape(result.name));\n\n return result;\n },\n mdat: function(data) {\n return {\n byteLength: data.byteLength,\n nals: nalParse(data)\n };\n },\n mdhd: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n i = 4,\n language,\n result = {\n version: view.getUint8(0),\n flags: new Uint8Array(data.subarray(1, 4)),\n language: ''\n };\n if (result.version === 1) {\n i += 4;\n result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n i += 8;\n result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n i += 4;\n result.timescale = view.getUint32(i);\n i += 8;\n result.duration = view.getUint32(i); // truncating top 4 bytes\n } else {\n result.creationTime = parseMp4Date(view.getUint32(i));\n i += 4;\n result.modificationTime = parseMp4Date(view.getUint32(i));\n i += 4;\n result.timescale = view.getUint32(i);\n i += 4;\n result.duration = view.getUint32(i);\n }\n i += 4;\n // language is stored as an ISO-639-2/T code in an array of three 5-bit fields\n // each field is the packed difference between its ASCII value and 0x60\n language = view.getUint16(i);\n result.language += String.fromCharCode((language >> 10) + 0x60);\n result.language += String.fromCharCode(((language & 0x03e0) >> 5) + 0x60);\n result.language += String.fromCharCode((language & 0x1f) + 0x60);\n\n return result;\n },\n mdia: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n mfhd: function(data) {\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n sequenceNumber: (data[4] << 24) |\n (data[5] << 16) |\n (data[6] << 8) |\n (data[7])\n };\n },\n minf: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n // codingname, not a first-class box type. stsd entries share the\n // same format as real boxes so the parsing infrastructure can be\n // shared\n mp4a: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n // 6 bytes reserved\n dataReferenceIndex: view.getUint16(6),\n // 4 + 4 bytes reserved\n channelcount: view.getUint16(16),\n samplesize: view.getUint16(18),\n // 2 bytes pre_defined\n // 2 bytes reserved\n samplerate: view.getUint16(24) + (view.getUint16(26) / 65536)\n };\n\n // if there are more bytes to process, assume this is an ISO/IEC\n // 14496-14 MP4AudioSampleEntry and parse the ESDBox\n if (data.byteLength > 28) {\n result.streamDescriptor = inspectMp4(data.subarray(28))[0];\n }\n return result;\n },\n moof: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n moov: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n mvex: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n mvhd: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n i = 4,\n result = {\n version: view.getUint8(0),\n flags: new Uint8Array(data.subarray(1, 4))\n };\n\n if (result.version === 1) {\n i += 4;\n result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n i += 8;\n result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n i += 4;\n result.timescale = view.getUint32(i);\n i += 8;\n result.duration = view.getUint32(i); // truncating top 4 bytes\n } else {\n result.creationTime = parseMp4Date(view.getUint32(i));\n i += 4;\n result.modificationTime = parseMp4Date(view.getUint32(i));\n i += 4;\n result.timescale = view.getUint32(i);\n i += 4;\n result.duration = view.getUint32(i);\n }\n i += 4;\n\n // convert fixed-point, base 16 back to a number\n result.rate = view.getUint16(i) + (view.getUint16(i + 2) / 16);\n i += 4;\n result.volume = view.getUint8(i) + (view.getUint8(i + 1) / 8);\n i += 2;\n i += 2;\n i += 2 * 4;\n result.matrix = new Uint32Array(data.subarray(i, i + (9 * 4)));\n i += 9 * 4;\n i += 6 * 4;\n result.nextTrackId = view.getUint32(i);\n return result;\n },\n pdin: function(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n return {\n version: view.getUint8(0),\n flags: new Uint8Array(data.subarray(1, 4)),\n rate: view.getUint32(4),\n initialDelay: view.getUint32(8)\n };\n },\n sdtp: function(data) {\n var\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n samples: []\n }, i;\n\n for (i = 4; i < data.byteLength; i++) {\n result.samples.push({\n dependsOn: (data[i] & 0x30) >> 4,\n isDependedOn: (data[i] & 0x0c) >> 2,\n hasRedundancy: data[i] & 0x03\n });\n }\n return result;\n },\n sidx: function(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n references: [],\n referenceId: view.getUint32(4),\n timescale: view.getUint32(8),\n earliestPresentationTime: view.getUint32(12),\n firstOffset: view.getUint32(16)\n },\n referenceCount = view.getUint16(22),\n i;\n\n for (i = 24; referenceCount; i += 12, referenceCount--) {\n result.references.push({\n referenceType: (data[i] & 0x80) >>> 7,\n referencedSize: view.getUint32(i) & 0x7FFFFFFF,\n subsegmentDuration: view.getUint32(i + 4),\n startsWithSap: !!(data[i + 8] & 0x80),\n sapType: (data[i + 8] & 0x70) >>> 4,\n sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF\n });\n }\n\n return result;\n },\n smhd: function(data) {\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n balance: data[4] + (data[5] / 256)\n };\n },\n stbl: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n stco: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n chunkOffsets: []\n },\n entryCount = view.getUint32(4),\n i;\n for (i = 8; entryCount; i += 4, entryCount--) {\n result.chunkOffsets.push(view.getUint32(i));\n }\n return result;\n },\n stsc: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n entryCount = view.getUint32(4),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n sampleToChunks: []\n },\n i;\n for (i = 8; entryCount; i += 12, entryCount--) {\n result.sampleToChunks.push({\n firstChunk: view.getUint32(i),\n samplesPerChunk: view.getUint32(i + 4),\n sampleDescriptionIndex: view.getUint32(i + 8)\n });\n }\n return result;\n },\n stsd: function(data) {\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n sampleDescriptions: inspectMp4(data.subarray(8))\n };\n },\n stsz: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n sampleSize: view.getUint32(4),\n entries: []\n },\n i;\n for (i = 12; i < data.byteLength; i += 4) {\n result.entries.push(view.getUint32(i));\n }\n return result;\n },\n stts: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n timeToSamples: []\n },\n entryCount = view.getUint32(4),\n i;\n\n for (i = 8; entryCount; i += 8, entryCount--) {\n result.timeToSamples.push({\n sampleCount: view.getUint32(i),\n sampleDelta: view.getUint32(i + 4)\n });\n }\n return result;\n },\n styp: function(data) {\n return parse.ftyp(data);\n },\n tfdt: function(data) {\n var result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n baseMediaDecodeTime: toUnsigned(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7])\n };\n if (result.version === 1) {\n result.baseMediaDecodeTime *= Math.pow(2, 32);\n result.baseMediaDecodeTime += toUnsigned(data[8] << 24 | data[9] << 16 | data[10] << 8 | data[11]);\n }\n return result;\n },\n tfhd: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n trackId: view.getUint32(4)\n },\n baseDataOffsetPresent = result.flags[2] & 0x01,\n sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n defaultSampleDurationPresent = result.flags[2] & 0x08,\n defaultSampleSizePresent = result.flags[2] & 0x10,\n defaultSampleFlagsPresent = result.flags[2] & 0x20,\n durationIsEmpty = result.flags[0] & 0x010000,\n defaultBaseIsMoof = result.flags[0] & 0x020000,\n i;\n\n i = 8;\n if (baseDataOffsetPresent) {\n i += 4; // truncate top 4 bytes\n // FIXME: should we read the full 64 bits?\n result.baseDataOffset = view.getUint32(12);\n i += 4;\n }\n if (sampleDescriptionIndexPresent) {\n result.sampleDescriptionIndex = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleDurationPresent) {\n result.defaultSampleDuration = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleSizePresent) {\n result.defaultSampleSize = view.getUint32(i);\n i += 4;\n }\n if (defaultSampleFlagsPresent) {\n result.defaultSampleFlags = view.getUint32(i);\n }\n if (durationIsEmpty) {\n result.durationIsEmpty = true;\n }\n if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n result.baseDataOffsetIsMoof = true;\n }\n return result;\n },\n tkhd: function(data) {\n var\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n i = 4,\n result = {\n version: view.getUint8(0),\n flags: new Uint8Array(data.subarray(1, 4))\n };\n if (result.version === 1) {\n i += 4;\n result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n i += 8;\n result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes\n i += 4;\n result.trackId = view.getUint32(i);\n i += 4;\n i += 8;\n result.duration = view.getUint32(i); // truncating top 4 bytes\n } else {\n result.creationTime = parseMp4Date(view.getUint32(i));\n i += 4;\n result.modificationTime = parseMp4Date(view.getUint32(i));\n i += 4;\n result.trackId = view.getUint32(i);\n i += 4;\n i += 4;\n result.duration = view.getUint32(i);\n }\n i += 4;\n i += 2 * 4;\n result.layer = view.getUint16(i);\n i += 2;\n result.alternateGroup = view.getUint16(i);\n i += 2;\n // convert fixed-point, base 16 back to a number\n result.volume = view.getUint8(i) + (view.getUint8(i + 1) / 8);\n i += 2;\n i += 2;\n result.matrix = new Uint32Array(data.subarray(i, i + (9 * 4)));\n i += 9 * 4;\n result.width = view.getUint16(i) + (view.getUint16(i + 2) / 16);\n i += 4;\n result.height = view.getUint16(i) + (view.getUint16(i + 2) / 16);\n return result;\n },\n traf: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n trak: function(data) {\n return {\n boxes: inspectMp4(data)\n };\n },\n trex: function(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n trackId: view.getUint32(4),\n defaultSampleDescriptionIndex: view.getUint32(8),\n defaultSampleDuration: view.getUint32(12),\n defaultSampleSize: view.getUint32(16),\n sampleDependsOn: data[20] & 0x03,\n sampleIsDependedOn: (data[21] & 0xc0) >> 6,\n sampleHasRedundancy: (data[21] & 0x30) >> 4,\n samplePaddingValue: (data[21] & 0x0e) >> 1,\n sampleIsDifferenceSample: !!(data[21] & 0x01),\n sampleDegradationPriority: view.getUint16(22)\n };\n },\n trun: function(data) {\n var\n result = {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n samples: []\n },\n view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n // Flag interpretation\n dataOffsetPresent = result.flags[2] & 0x01, // compare with 2nd byte of 0x1\n firstSampleFlagsPresent = result.flags[2] & 0x04, // compare with 2nd byte of 0x4\n sampleDurationPresent = result.flags[1] & 0x01, // compare with 2nd byte of 0x100\n sampleSizePresent = result.flags[1] & 0x02, // compare with 2nd byte of 0x200\n sampleFlagsPresent = result.flags[1] & 0x04, // compare with 2nd byte of 0x400\n sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08, // compare with 2nd byte of 0x800\n sampleCount = view.getUint32(4),\n offset = 8,\n sample;\n\n if (dataOffsetPresent) {\n // 32 bit signed integer\n result.dataOffset = view.getInt32(offset);\n offset += 4;\n }\n\n // Overrides the flags for the first sample only. The order of\n // optional values will be: duration, size, compositionTimeOffset\n if (firstSampleFlagsPresent && sampleCount) {\n sample = {\n flags: parseSampleFlags(data.subarray(offset, offset + 4))\n };\n offset += 4;\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n if (sampleCompositionTimeOffsetPresent) {\n // Note: this should be a signed int if version is 1\n sample.compositionTimeOffset = view.getUint32(offset);\n offset += 4;\n }\n result.samples.push(sample);\n sampleCount--;\n }\n\n while (sampleCount--) {\n sample = {};\n if (sampleDurationPresent) {\n sample.duration = view.getUint32(offset);\n offset += 4;\n }\n if (sampleSizePresent) {\n sample.size = view.getUint32(offset);\n offset += 4;\n }\n if (sampleFlagsPresent) {\n sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n offset += 4;\n }\n if (sampleCompositionTimeOffsetPresent) {\n // Note: this should be a signed int if version is 1\n sample.compositionTimeOffset = view.getUint32(offset);\n offset += 4;\n }\n result.samples.push(sample);\n }\n return result;\n },\n 'url ': function(data) {\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4))\n };\n },\n vmhd: function(data) {\n var view = new DataView(data.buffer, data.byteOffset, data.byteLength);\n return {\n version: data[0],\n flags: new Uint8Array(data.subarray(1, 4)),\n graphicsmode: view.getUint16(4),\n opcolor: new Uint16Array([view.getUint16(6),\n view.getUint16(8),\n view.getUint16(10)])\n };\n }\n };\n\n\n/**\n * Return a javascript array of box objects parsed from an ISO base\n * media file.\n * @param data {Uint8Array} the binary data of the media to be inspected\n * @return {array} a javascript array of potentially nested box objects\n */\ninspectMp4 = function(data) {\n var\n i = 0,\n result = [],\n view,\n size,\n type,\n end,\n box;\n\n // Convert data from Uint8Array to ArrayBuffer, to follow Dataview API\n var ab = new ArrayBuffer(data.length);\n var v = new Uint8Array(ab);\n for (var z = 0; z < data.length; ++z) {\n v[z] = data[z];\n }\n view = new DataView(ab);\n\n while (i < data.byteLength) {\n // parse box data\n size = view.getUint32(i);\n type = parseType(data.subarray(i + 4, i + 8));\n end = size > 1 ? i + size : data.byteLength;\n\n // parse type-specific data\n box = (parse[type] || function(data) {\n return {\n data: data\n };\n })(data.subarray(i + 8, end));\n box.size = size;\n box.type = type;\n\n // store this box and move to the next\n result.push(box);\n i = end;\n }\n return result;\n};\n\n/**\n * Returns a textual representation of the javascript represtentation\n * of an MP4 file. You can use it as an alternative to\n * JSON.stringify() to compare inspected MP4s.\n * @param inspectedMp4 {array} the parsed array of boxes in an MP4\n * file\n * @param depth {number} (optional) the number of ancestor boxes of\n * the elements of inspectedMp4. Assumed to be zero if unspecified.\n * @return {string} a text representation of the parsed MP4\n */\ntextifyMp4 = function(inspectedMp4, depth) {\n var indent;\n depth = depth || 0;\n indent = new Array(depth * 2 + 1).join(' ');\n\n // iterate over all the boxes\n return inspectedMp4.map(function(box, index) {\n\n // list the box type first at the current indentation level\n return indent + box.type + '\\n' +\n\n // the type is already included and handle child boxes separately\n Object.keys(box).filter(function(key) {\n return key !== 'type' && key !== 'boxes';\n\n // output all the box properties\n }).map(function(key) {\n var prefix = indent + ' ' + key + ': ',\n value = box[key];\n\n // print out raw bytes as hexademical\n if (value instanceof Uint8Array || value instanceof Uint32Array) {\n var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength))\n .map(function(byte) {\n return ' ' + ('00' + byte.toString(16)).slice(-2);\n }).join('').match(/.{1,24}/g);\n if (!bytes) {\n return prefix + '<>';\n }\n if (bytes.length === 1) {\n return prefix + '<' + bytes.join('').slice(1) + '>';\n }\n return prefix + '<\\n' + bytes.map(function(line) {\n return indent + ' ' + line;\n }).join('\\n') + '\\n' + indent + ' >';\n }\n\n // stringify generic objects\n return prefix +\n JSON.stringify(value, null, 2)\n .split('\\n').map(function(line, index) {\n if (index === 0) {\n return line;\n }\n return indent + ' ' + line;\n }).join('\\n');\n }).join('\\n') +\n\n // recursively textify the child boxes\n (box.boxes ? '\\n' + textifyMp4(box.boxes, depth + 1) : '');\n }).join('\\n');\n};\n\nmodule.exports = {\n inspect: inspectMp4,\n textify: textifyMp4,\n parseType: parseType,\n findBox: findBox,\n parseTraf: parse.traf,\n parseTfdt: parse.tfdt,\n parseHdlr: parse.hdlr,\n parseTfhd: parse.tfhd,\n parseTrun: parse.trun,\n parseSidx: parse.sidx\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about MP4s.\n */\n'use strict';\n\nvar toUnsigned = require('../utils/bin').toUnsigned;\nvar toHexString = require('../utils/bin').toHexString;\nvar mp4Inspector = require('../tools/mp4-inspector.js');\nvar timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks;\n\n/**\n * Parses an MP4 initialization segment and extracts the timescale\n * values for any declared tracks. Timescale values indicate the\n * number of clock ticks per second to assume for time-based values\n * elsewhere in the MP4.\n *\n * To determine the start time of an MP4, you need two pieces of\n * information: the timescale unit and the earliest base media decode\n * time. Multiple timescales can be specified within an MP4 but the\n * base media decode time is always expressed in the timescale from\n * the media header box for the track:\n * ```\n * moov > trak > mdia > mdhd.timescale\n * ```\n * @param init {Uint8Array} the bytes of the init segment\n * @return {object} a hash of track ids to timescale values or null if\n * the init segment is malformed.\n */\ntimescale = function(init) {\n var\n result = {},\n traks = mp4Inspector.findBox(init, ['moov', 'trak']);\n\n // mdhd timescale\n return traks.reduce(function(result, trak) {\n var tkhd, version, index, id, mdhd;\n\n tkhd = mp4Inspector.findBox(trak, ['tkhd'])[0];\n if (!tkhd) {\n return null;\n }\n version = tkhd[0];\n index = version === 0 ? 12 : 20;\n id = toUnsigned(tkhd[index] << 24 |\n tkhd[index + 1] << 16 |\n tkhd[index + 2] << 8 |\n tkhd[index + 3]);\n\n mdhd = mp4Inspector.findBox(trak, ['mdia', 'mdhd'])[0];\n if (!mdhd) {\n return null;\n }\n version = mdhd[0];\n index = version === 0 ? 12 : 20;\n result[id] = toUnsigned(mdhd[index] << 24 |\n mdhd[index + 1] << 16 |\n mdhd[index + 2] << 8 |\n mdhd[index + 3]);\n return result;\n }, result);\n};\n\n/**\n * Determine the base media decode start time, in seconds, for an MP4\n * fragment. If multiple fragments are specified, the earliest time is\n * returned.\n *\n * The base media decode time can be parsed from track fragment\n * metadata:\n * ```\n * moof > traf > tfdt.baseMediaDecodeTime\n * ```\n * It requires the timescale value from the mdhd to interpret.\n *\n * @param timescale {object} a hash of track ids to timescale values.\n * @return {number} the earliest base media decode start time for the\n * fragment, in seconds\n */\nstartTime = function(timescale, fragment) {\n var trafs, baseTimes, result;\n\n // we need info from two childrend of each track fragment box\n trafs = mp4Inspector.findBox(fragment, ['moof', 'traf']);\n\n // determine the start times for each track\n baseTimes = [].concat.apply([], trafs.map(function(traf) {\n return mp4Inspector.findBox(traf, ['tfhd']).map(function(tfhd) {\n var id, scale, baseTime;\n\n // get the track id from the tfhd\n id = toUnsigned(tfhd[4] << 24 |\n tfhd[5] << 16 |\n tfhd[6] << 8 |\n tfhd[7]);\n // assume a 90kHz clock if no timescale was specified\n scale = timescale[id] || 90e3;\n\n // get the base media decode time from the tfdt\n baseTime = mp4Inspector.findBox(traf, ['tfdt']).map(function(tfdt) {\n var version, result;\n\n version = tfdt[0];\n result = toUnsigned(tfdt[4] << 24 |\n tfdt[5] << 16 |\n tfdt[6] << 8 |\n tfdt[7]);\n if (version === 1) {\n result *= Math.pow(2, 32);\n result += toUnsigned(tfdt[8] << 24 |\n tfdt[9] << 16 |\n tfdt[10] << 8 |\n tfdt[11]);\n }\n return result;\n })[0];\n baseTime = baseTime || Infinity;\n\n // convert base time to seconds\n return baseTime / scale;\n });\n }));\n\n // return the minimum\n result = Math.min.apply(null, baseTimes);\n return isFinite(result) ? result : 0;\n};\n\n/**\n * Determine the composition start, in seconds, for an MP4\n * fragment.\n *\n * The composition start time of a fragment can be calculated using the base\n * media decode time, composition time offset, and timescale, as follows:\n *\n * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale\n *\n * All of the aforementioned information is contained within a media fragment's\n * `traf` box, except for timescale info, which comes from the initialization\n * segment, so a track id (also contained within a `traf`) is also necessary to\n * associate it with a timescale\n *\n *\n * @param timescales {object} - a hash of track ids to timescale values.\n * @param fragment {Unit8Array} - the bytes of a media segment\n * @return {number} the composition start time for the fragment, in seconds\n **/\ncompositionStartTime = function(timescales, fragment) {\n var trafBoxes = mp4Inspector.findBox(fragment, ['moof', 'traf']);\n var baseMediaDecodeTime = 0;\n var compositionTimeOffset = 0;\n var trackId;\n\n if (trafBoxes && trafBoxes.length) {\n // The spec states that track run samples contained within a `traf` box are contiguous, but\n // it does not explicitly state whether the `traf` boxes themselves are contiguous.\n // We will assume that they are, so we only need the first to calculate start time.\n var parsedTraf = mp4Inspector.parseTraf(trafBoxes[0]);\n\n for (var i = 0; i < parsedTraf.boxes.length; i++) {\n if (parsedTraf.boxes[i].type === 'tfhd') {\n trackId = parsedTraf.boxes[i].trackId;\n } else if (parsedTraf.boxes[i].type === 'tfdt') {\n baseMediaDecodeTime = parsedTraf.boxes[i].baseMediaDecodeTime;\n } else if (parsedTraf.boxes[i].type === 'trun' && parsedTraf.boxes[i].samples.length) {\n compositionTimeOffset = parsedTraf.boxes[i].samples[0].compositionTimeOffset || 0;\n }\n }\n }\n\n // Get timescale for this specific track. Assume a 90kHz clock if no timescale was\n // specified.\n var timescale = timescales[trackId] || 90e3;\n\n // return the composition start time, in seconds\n return (baseMediaDecodeTime + compositionTimeOffset) / timescale;\n};\n\n/**\n * Find the trackIds of the video tracks in this source.\n * Found by parsing the Handler Reference and Track Header Boxes:\n * moov > trak > mdia > hdlr\n * moov > trak > tkhd\n *\n * @param {Uint8Array} init - The bytes of the init segment for this source\n * @return {Number[]} A list of trackIds\n *\n * @see ISO-BMFF-12/2015, Section 8.4.3\n **/\ngetVideoTrackIds = function(init) {\n var traks = mp4Inspector.findBox(init, ['moov', 'trak']);\n var videoTrackIds = [];\n\n traks.forEach(function(trak) {\n var hdlrs = mp4Inspector.findBox(trak, ['mdia', 'hdlr']);\n var tkhds = mp4Inspector.findBox(trak, ['tkhd']);\n\n hdlrs.forEach(function(hdlr, index) {\n var handlerType = mp4Inspector.parseType(hdlr.subarray(8, 12));\n var tkhd = tkhds[index];\n var view;\n var version;\n var trackId;\n\n if (handlerType === 'vide') {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n version = view.getUint8(0);\n trackId = (version === 0) ? view.getUint32(12) : view.getUint32(20);\n\n videoTrackIds.push(trackId);\n }\n });\n });\n\n return videoTrackIds;\n};\n\n/**\n * Get all the video, audio, and hint tracks from a non fragmented\n * mp4 segment\n */\ngetTracks = function(init) {\n var traks = mp4Inspector.findBox(init, ['moov', 'trak']);\n var tracks = [];\n\n traks.forEach(function(trak) {\n var track = {};\n var tkhd = mp4Inspector.findBox(trak, ['tkhd'])[0];\n var view, version;\n\n // id\n if (tkhd) {\n view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n version = view.getUint8(0);\n\n track.id = (version === 0) ? view.getUint32(12) : view.getUint32(20);\n }\n\n var hdlr = mp4Inspector.findBox(trak, ['mdia', 'hdlr'])[0];\n\n // type\n if (hdlr) {\n var type = mp4Inspector.parseType(hdlr.subarray(8, 12));\n\n if (type === 'vide') {\n track.type = 'video';\n } else if (type === 'soun') {\n track.type = 'audio';\n } else {\n track.type = type;\n }\n }\n\n\n // codec\n var stsd = mp4Inspector.findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];\n\n if (stsd) {\n var sampleDescriptions = stsd.subarray(8);\n // gives the codec type string\n track.codec = mp4Inspector.parseType(sampleDescriptions.subarray(4, 8));\n\n var codecBox = mp4Inspector.findBox(sampleDescriptions, [track.codec])[0];\n var codecConfig, codecConfigType;\n\n if (codecBox) {\n // https://tools.ietf.org/html/rfc6381#section-3.3\n if ((/^[a-z]vc[1-9]$/i).test(track.codec)) {\n // we don't need anything but the \"config\" parameter of the\n // avc1 codecBox\n codecConfig = codecBox.subarray(78);\n codecConfigType = mp4Inspector.parseType(codecConfig.subarray(4, 8));\n\n if (codecConfigType === 'avcC' && codecConfig.length > 11) {\n track.codec += '.';\n\n // left padded with zeroes for single digit hex\n // profile idc\n track.codec += toHexString(codecConfig[9]);\n // the byte containing the constraint_set flags\n track.codec += toHexString(codecConfig[10]);\n // level idc\n track.codec += toHexString(codecConfig[11]);\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'avc1.4d400d';\n }\n } else if ((/^mp4[a,v]$/i).test(track.codec)) {\n // we do not need anything but the streamDescriptor of the mp4a codecBox\n codecConfig = codecBox.subarray(28);\n codecConfigType = mp4Inspector.parseType(codecConfig.subarray(4, 8));\n\n if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {\n track.codec += '.' + toHexString(codecConfig[19]);\n // this value is only a single digit\n track.codec += '.' + toHexString((codecConfig[20] >>> 2) & 0x3f).replace(/^0/, '');\n } else {\n // TODO: show a warning that we couldn't parse the codec\n // and are using the default\n track.codec = 'mp4a.40.2';\n }\n } else {\n // TODO: show a warning? for unknown codec type\n }\n }\n }\n\n var mdhd = mp4Inspector.findBox(trak, ['mdia', 'mdhd'])[0];\n\n if (mdhd && tkhd) {\n var index = version === 0 ? 12 : 20;\n\n track.timescale = toUnsigned(mdhd[index] << 24 |\n mdhd[index + 1] << 16 |\n mdhd[index + 2] << 8 |\n mdhd[index + 3]);\n }\n\n tracks.push(track);\n });\n\n return tracks;\n};\n\nmodule.exports = {\n // export mp4 inspector's findBox and parseType for backwards compatibility\n findBox: mp4Inspector.findBox,\n parseType: mp4Inspector.parseType,\n timescale: timescale,\n startTime: startTime,\n compositionStartTime: compositionStartTime,\n videoTrackIds: getVideoTrackIds,\n tracks: getTracks\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Reads in-band caption information from a video elementary\n * stream. Captions must follow the CEA-708 standard for injection\n * into an MPEG-2 transport streams.\n * @see https://en.wikipedia.org/wiki/CEA-708\n * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n */\n\n'use strict';\n\n// Supplemental enhancement information (SEI) NAL units have a\n// payload type field to indicate how they are to be\n// interpreted. CEAS-708 caption content is always transmitted with\n// payload type 0x04.\nvar USER_DATA_REGISTERED_ITU_T_T35 = 4,\n RBSP_TRAILING_BITS = 128;\n\n/**\n * Parse a supplemental enhancement information (SEI) NAL unit.\n * Stops parsing once a message of type ITU T T35 has been found.\n *\n * @param bytes {Uint8Array} the bytes of a SEI NAL unit\n * @return {object} the parsed SEI payload\n * @see Rec. ITU-T H.264, 7.3.2.3.1\n */\nvar parseSei = function(bytes) {\n var\n i = 0,\n result = {\n payloadType: -1,\n payloadSize: 0\n },\n payloadType = 0,\n payloadSize = 0;\n\n // go through the sei_rbsp parsing each each individual sei_message\n while (i < bytes.byteLength) {\n // stop once we have hit the end of the sei_rbsp\n if (bytes[i] === RBSP_TRAILING_BITS) {\n break;\n }\n\n // Parse payload type\n while (bytes[i] === 0xFF) {\n payloadType += 255;\n i++;\n }\n payloadType += bytes[i++];\n\n // Parse payload size\n while (bytes[i] === 0xFF) {\n payloadSize += 255;\n i++;\n }\n payloadSize += bytes[i++];\n\n // this sei_message is a 608/708 caption so save it and break\n // there can only ever be one caption message in a frame's sei\n if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {\n result.payloadType = payloadType;\n result.payloadSize = payloadSize;\n result.payload = bytes.subarray(i, i + payloadSize);\n break;\n }\n\n // skip the payload and parse the next message\n i += payloadSize;\n payloadType = 0;\n payloadSize = 0;\n }\n\n return result;\n};\n\n// see ANSI/SCTE 128-1 (2013), section 8.1\nvar parseUserData = function(sei) {\n // itu_t_t35_contry_code must be 181 (United States) for\n // captions\n if (sei.payload[0] !== 181) {\n return null;\n }\n\n // itu_t_t35_provider_code should be 49 (ATSC) for captions\n if (((sei.payload[1] << 8) | sei.payload[2]) !== 49) {\n return null;\n }\n\n // the user_identifier should be \"GA94\" to indicate ATSC1 data\n if (String.fromCharCode(sei.payload[3],\n sei.payload[4],\n sei.payload[5],\n sei.payload[6]) !== 'GA94') {\n return null;\n }\n\n // finally, user_data_type_code should be 0x03 for caption data\n if (sei.payload[7] !== 0x03) {\n return null;\n }\n\n // return the user_data_type_structure and strip the trailing\n // marker bits\n return sei.payload.subarray(8, sei.payload.length - 1);\n};\n\n// see CEA-708-D, section 4.4\nvar parseCaptionPackets = function(pts, userData) {\n var results = [], i, count, offset, data;\n\n // if this is just filler, return immediately\n if (!(userData[0] & 0x40)) {\n return results;\n }\n\n // parse out the cc_data_1 and cc_data_2 fields\n count = userData[0] & 0x1f;\n for (i = 0; i < count; i++) {\n offset = i * 3;\n data = {\n type: userData[offset + 2] & 0x03,\n pts: pts\n };\n\n // capture cc data when cc_valid is 1\n if (userData[offset + 2] & 0x04) {\n data.ccData = (userData[offset + 3] << 8) | userData[offset + 4];\n results.push(data);\n }\n }\n return results;\n};\n\nvar discardEmulationPreventionBytes = function(data) {\n var\n length = data.byteLength,\n emulationPreventionBytesPositions = [],\n i = 1,\n newLength, newData;\n\n // Find all `Emulation Prevention Bytes`\n while (i < length - 2) {\n if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n emulationPreventionBytesPositions.push(i + 2);\n i += 2;\n } else {\n i++;\n }\n }\n\n // If no Emulation Prevention Bytes were found just return the original\n // array\n if (emulationPreventionBytesPositions.length === 0) {\n return data;\n }\n\n // Create a new array to hold the NAL unit data\n newLength = length - emulationPreventionBytesPositions.length;\n newData = new Uint8Array(newLength);\n var sourceIndex = 0;\n\n for (i = 0; i < newLength; sourceIndex++, i++) {\n if (sourceIndex === emulationPreventionBytesPositions[0]) {\n // Skip this byte\n sourceIndex++;\n // Remove this position index\n emulationPreventionBytesPositions.shift();\n }\n newData[i] = data[sourceIndex];\n }\n\n return newData;\n};\n\n// exports\nmodule.exports = {\n parseSei: parseSei,\n parseUserData: parseUserData,\n parseCaptionPackets: parseCaptionPackets,\n discardEmulationPreventionBytes: discardEmulationPreventionBytes,\n USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * A lightweight readable stream implemention that handles event dispatching.\n * Objects that inherit from streams should call init in their constructors.\n */\n'use strict';\n\nvar Stream = function() {\n this.init = function() {\n var listeners = {};\n /**\n * Add a listener for a specified event type.\n * @param type {string} the event name\n * @param listener {function} the callback to be invoked when an event of\n * the specified type occurs\n */\n this.on = function(type, listener) {\n if (!listeners[type]) {\n listeners[type] = [];\n }\n listeners[type] = listeners[type].concat(listener);\n };\n /**\n * Remove a listener for a specified event type.\n * @param type {string} the event name\n * @param listener {function} a function previously registered for this\n * type of event through `on`\n */\n this.off = function(type, listener) {\n var index;\n if (!listeners[type]) {\n return false;\n }\n index = listeners[type].indexOf(listener);\n listeners[type] = listeners[type].slice();\n listeners[type].splice(index, 1);\n return index > -1;\n };\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n * @param type {string} the event name\n */\n this.trigger = function(type) {\n var callbacks, i, length, args;\n callbacks = listeners[type];\n if (!callbacks) {\n return;\n }\n // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n if (arguments.length === 2) {\n length = callbacks.length;\n for (i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n args = [];\n i = arguments.length;\n for (i = 1; i < arguments.length; ++i) {\n args.push(arguments[i]);\n }\n length = callbacks.length;\n for (i = 0; i < length; ++i) {\n callbacks[i].apply(this, args);\n }\n }\n };\n /**\n * Destroys the stream and cleans up.\n */\n this.dispose = function() {\n listeners = {};\n };\n };\n};\n\n/**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n * @param destination {stream} the stream that will receive all `data` events\n * @param autoFlush {boolean} if false, we will not call `flush` on the destination\n * when the current stream emits a 'done' event\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\nStream.prototype.pipe = function(destination) {\n this.on('data', function(data) {\n destination.push(data);\n });\n\n this.on('done', function(flushSource) {\n destination.flush(flushSource);\n });\n\n this.on('partialdone', function(flushSource) {\n destination.partialFlush(flushSource);\n });\n\n this.on('endedtimeline', function(flushSource) {\n destination.endTimeline(flushSource);\n });\n\n this.on('reset', function(flushSource) {\n destination.reset(flushSource);\n });\n\n return destination;\n};\n\n// Default stream functions that are expected to be overridden to perform\n// actual work. These are provided by the prototype as a sort of no-op\n// implementation so that we don't have to check for their existence in the\n// `pipe` function above.\nStream.prototype.push = function(data) {\n this.trigger('data', data);\n};\n\nStream.prototype.flush = function(flushSource) {\n this.trigger('done', flushSource);\n};\n\nStream.prototype.partialFlush = function(flushSource) {\n this.trigger('partialdone', flushSource);\n};\n\nStream.prototype.endTimeline = function(flushSource) {\n this.trigger('endedtimeline', flushSource);\n};\n\nStream.prototype.reset = function(flushSource) {\n this.trigger('reset', flushSource);\n};\n\nmodule.exports = Stream;\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Reads in-band caption information from a video elementary\n * stream. Captions must follow the CEA-708 standard for injection\n * into an MPEG-2 transport streams.\n * @see https://en.wikipedia.org/wiki/CEA-708\n * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n */\n\n'use strict';\n\n// -----------------\n// Link To Transport\n// -----------------\n\nvar Stream = require('../utils/stream');\nvar cea708Parser = require('../tools/caption-packet-parser');\n\nvar CaptionStream = function() {\n\n CaptionStream.prototype.init.call(this);\n\n this.captionPackets_ = [];\n\n this.ccStreams_ = [\n new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define\n new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define\n new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define\n new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define\n ];\n\n this.reset();\n\n // forward data and done events from CCs to this CaptionStream\n this.ccStreams_.forEach(function(cc) {\n cc.on('data', this.trigger.bind(this, 'data'));\n cc.on('partialdone', this.trigger.bind(this, 'partialdone'));\n cc.on('done', this.trigger.bind(this, 'done'));\n }, this);\n\n};\n\nCaptionStream.prototype = new Stream();\nCaptionStream.prototype.push = function(event) {\n var sei, userData, newCaptionPackets;\n\n // only examine SEI NALs\n if (event.nalUnitType !== 'sei_rbsp') {\n return;\n }\n\n // parse the sei\n sei = cea708Parser.parseSei(event.escapedRBSP);\n\n // ignore everything but user_data_registered_itu_t_t35\n if (sei.payloadType !== cea708Parser.USER_DATA_REGISTERED_ITU_T_T35) {\n return;\n }\n\n // parse out the user data payload\n userData = cea708Parser.parseUserData(sei);\n\n // ignore unrecognized userData\n if (!userData) {\n return;\n }\n\n // Sometimes, the same segment # will be downloaded twice. To stop the\n // caption data from being processed twice, we track the latest dts we've\n // received and ignore everything with a dts before that. However, since\n // data for a specific dts can be split across packets on either side of\n // a segment boundary, we need to make sure we *don't* ignore the packets\n // from the *next* segment that have dts === this.latestDts_. By constantly\n // tracking the number of packets received with dts === this.latestDts_, we\n // know how many should be ignored once we start receiving duplicates.\n if (event.dts < this.latestDts_) {\n // We've started getting older data, so set the flag.\n this.ignoreNextEqualDts_ = true;\n return;\n } else if ((event.dts === this.latestDts_) && (this.ignoreNextEqualDts_)) {\n this.numSameDts_--;\n if (!this.numSameDts_) {\n // We've received the last duplicate packet, time to start processing again\n this.ignoreNextEqualDts_ = false;\n }\n return;\n }\n\n // parse out CC data packets and save them for later\n newCaptionPackets = cea708Parser.parseCaptionPackets(event.pts, userData);\n this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);\n if (this.latestDts_ !== event.dts) {\n this.numSameDts_ = 0;\n }\n this.numSameDts_++;\n this.latestDts_ = event.dts;\n};\n\nCaptionStream.prototype.flushCCStreams = function(flushType) {\n this.ccStreams_.forEach(function(cc) {\n return flushType === 'flush' ? cc.flush() : cc.partialFlush();\n }, this);\n};\n\nCaptionStream.prototype.flushStream = function(flushType) {\n // make sure we actually parsed captions before proceeding\n if (!this.captionPackets_.length) {\n this.flushCCStreams(flushType);\n return;\n }\n\n // In Chrome, the Array#sort function is not stable so add a\n // presortIndex that we can use to ensure we get a stable-sort\n this.captionPackets_.forEach(function(elem, idx) {\n elem.presortIndex = idx;\n });\n\n // sort caption byte-pairs based on their PTS values\n this.captionPackets_.sort(function(a, b) {\n if (a.pts === b.pts) {\n return a.presortIndex - b.presortIndex;\n }\n return a.pts - b.pts;\n });\n\n this.captionPackets_.forEach(function(packet) {\n if (packet.type < 2) {\n // Dispatch packet to the right Cea608Stream\n this.dispatchCea608Packet(packet);\n }\n // this is where an 'else' would go for a dispatching packets\n // to a theoretical Cea708Stream that handles SERVICEn data\n }, this);\n\n this.captionPackets_.length = 0;\n this.flushCCStreams(flushType);\n};\n\nCaptionStream.prototype.flush = function() {\n return this.flushStream('flush');\n};\n\n// Only called if handling partial data\nCaptionStream.prototype.partialFlush = function() {\n return this.flushStream('partialFlush');\n};\n\nCaptionStream.prototype.reset = function() {\n this.latestDts_ = null;\n this.ignoreNextEqualDts_ = false;\n this.numSameDts_ = 0;\n this.activeCea608Channel_ = [null, null];\n this.ccStreams_.forEach(function(ccStream) {\n ccStream.reset();\n });\n};\n\n// From the CEA-608 spec:\n/*\n * When XDS sub-packets are interleaved with other services, the end of each sub-packet shall be followed\n * by a control pair to change to a different service. When any of the control codes from 0x10 to 0x1F is\n * used to begin a control code pair, it indicates the return to captioning or Text data. The control code pair\n * and subsequent data should then be processed according to the FCC rules. It may be necessary for the\n * line 21 data encoder to automatically insert a control code pair (i.e. RCL, RU2, RU3, RU4, RDC, or RTD)\n * to switch to captioning or Text.\n*/\n// With that in mind, we ignore any data between an XDS control code and a\n// subsequent closed-captioning control code.\nCaptionStream.prototype.dispatchCea608Packet = function(packet) {\n // NOTE: packet.type is the CEA608 field\n if (this.setsTextOrXDSActive(packet)) {\n this.activeCea608Channel_[packet.type] = null;\n } else if (this.setsChannel1Active(packet)) {\n this.activeCea608Channel_[packet.type] = 0;\n } else if (this.setsChannel2Active(packet)) {\n this.activeCea608Channel_[packet.type] = 1;\n }\n if (this.activeCea608Channel_[packet.type] === null) {\n // If we haven't received anything to set the active channel, or the\n // packets are Text/XDS data, discard the data; we don't want jumbled\n // captions\n return;\n }\n this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);\n};\n\nCaptionStream.prototype.setsChannel1Active = function(packet) {\n return ((packet.ccData & 0x7800) === 0x1000);\n};\nCaptionStream.prototype.setsChannel2Active = function(packet) {\n return ((packet.ccData & 0x7800) === 0x1800);\n};\nCaptionStream.prototype.setsTextOrXDSActive = function(packet) {\n return ((packet.ccData & 0x7100) === 0x0100) ||\n ((packet.ccData & 0x78fe) === 0x102a) ||\n ((packet.ccData & 0x78fe) === 0x182a);\n};\n\n// ----------------------\n// Session to Application\n// ----------------------\n\n// This hash maps non-ASCII, special, and extended character codes to their\n// proper Unicode equivalent. The first keys that are only a single byte\n// are the non-standard ASCII characters, which simply map the CEA608 byte\n// to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608\n// character codes, but have their MSB bitmasked with 0x03 so that a lookup\n// can be performed regardless of the field and data channel on which the\n// character code was received.\nvar CHARACTER_TRANSLATION = {\n 0x2a: 0xe1, // á\n 0x5c: 0xe9, // é\n 0x5e: 0xed, // í\n 0x5f: 0xf3, // ó\n 0x60: 0xfa, // ú\n 0x7b: 0xe7, // ç\n 0x7c: 0xf7, // ÷\n 0x7d: 0xd1, // Ñ\n 0x7e: 0xf1, // ñ\n 0x7f: 0x2588, // █\n 0x0130: 0xae, // ®\n 0x0131: 0xb0, // °\n 0x0132: 0xbd, // ½\n 0x0133: 0xbf, // ¿\n 0x0134: 0x2122, // ™\n 0x0135: 0xa2, // ¢\n 0x0136: 0xa3, // £\n 0x0137: 0x266a, // ♪\n 0x0138: 0xe0, // à\n 0x0139: 0xa0, //\n 0x013a: 0xe8, // è\n 0x013b: 0xe2, // â\n 0x013c: 0xea, // ê\n 0x013d: 0xee, // î\n 0x013e: 0xf4, // ô\n 0x013f: 0xfb, // û\n 0x0220: 0xc1, // Á\n 0x0221: 0xc9, // É\n 0x0222: 0xd3, // Ó\n 0x0223: 0xda, // Ú\n 0x0224: 0xdc, // Ü\n 0x0225: 0xfc, // ü\n 0x0226: 0x2018, // ‘\n 0x0227: 0xa1, // ¡\n 0x0228: 0x2a, // *\n 0x0229: 0x27, // '\n 0x022a: 0x2014, // —\n 0x022b: 0xa9, // ©\n 0x022c: 0x2120, // ℠\n 0x022d: 0x2022, // •\n 0x022e: 0x201c, // “\n 0x022f: 0x201d, // ”\n 0x0230: 0xc0, // À\n 0x0231: 0xc2, // Â\n 0x0232: 0xc7, // Ç\n 0x0233: 0xc8, // È\n 0x0234: 0xca, // Ê\n 0x0235: 0xcb, // Ë\n 0x0236: 0xeb, // ë\n 0x0237: 0xce, // Î\n 0x0238: 0xcf, // Ï\n 0x0239: 0xef, // ï\n 0x023a: 0xd4, // Ô\n 0x023b: 0xd9, // Ù\n 0x023c: 0xf9, // ù\n 0x023d: 0xdb, // Û\n 0x023e: 0xab, // «\n 0x023f: 0xbb, // »\n 0x0320: 0xc3, // Ã\n 0x0321: 0xe3, // ã\n 0x0322: 0xcd, // Í\n 0x0323: 0xcc, // Ì\n 0x0324: 0xec, // ì\n 0x0325: 0xd2, // Ò\n 0x0326: 0xf2, // ò\n 0x0327: 0xd5, // Õ\n 0x0328: 0xf5, // õ\n 0x0329: 0x7b, // {\n 0x032a: 0x7d, // }\n 0x032b: 0x5c, // \\\n 0x032c: 0x5e, // ^\n 0x032d: 0x5f, // _\n 0x032e: 0x7c, // |\n 0x032f: 0x7e, // ~\n 0x0330: 0xc4, // Ä\n 0x0331: 0xe4, // ä\n 0x0332: 0xd6, // Ö\n 0x0333: 0xf6, // ö\n 0x0334: 0xdf, // ß\n 0x0335: 0xa5, // ¥\n 0x0336: 0xa4, // ¤\n 0x0337: 0x2502, // │\n 0x0338: 0xc5, // Å\n 0x0339: 0xe5, // å\n 0x033a: 0xd8, // Ø\n 0x033b: 0xf8, // ø\n 0x033c: 0x250c, // ┌\n 0x033d: 0x2510, // ┐\n 0x033e: 0x2514, // └\n 0x033f: 0x2518 // ┘\n};\n\nvar getCharFromCode = function(code) {\n if (code === null) {\n return '';\n }\n code = CHARACTER_TRANSLATION[code] || code;\n return String.fromCharCode(code);\n};\n\n// the index of the last row in a CEA-608 display buffer\nvar BOTTOM_ROW = 14;\n\n// This array is used for mapping PACs -> row #, since there's no way of\n// getting it through bit logic.\nvar ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620,\n 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420];\n\n// CEA-608 captions are rendered onto a 34x15 matrix of character\n// cells. The \"bottom\" row is the last element in the outer array.\nvar createDisplayBuffer = function() {\n var result = [], i = BOTTOM_ROW + 1;\n while (i--) {\n result.push('');\n }\n return result;\n};\n\nvar Cea608Stream = function(field, dataChannel) {\n Cea608Stream.prototype.init.call(this);\n\n this.field_ = field || 0;\n this.dataChannel_ = dataChannel || 0;\n\n this.name_ = 'CC' + (((this.field_ << 1) | this.dataChannel_) + 1);\n\n this.setConstants();\n this.reset();\n\n this.push = function(packet) {\n var data, swap, char0, char1, text;\n // remove the parity bits\n data = packet.ccData & 0x7f7f;\n\n // ignore duplicate control codes; the spec demands they're sent twice\n if (data === this.lastControlCode_) {\n this.lastControlCode_ = null;\n return;\n }\n\n // Store control codes\n if ((data & 0xf000) === 0x1000) {\n this.lastControlCode_ = data;\n } else if (data !== this.PADDING_) {\n this.lastControlCode_ = null;\n }\n\n char0 = data >>> 8;\n char1 = data & 0xff;\n\n if (data === this.PADDING_) {\n return;\n\n } else if (data === this.RESUME_CAPTION_LOADING_) {\n this.mode_ = 'popOn';\n\n } else if (data === this.END_OF_CAPTION_) {\n // If an EOC is received while in paint-on mode, the displayed caption\n // text should be swapped to non-displayed memory as if it was a pop-on\n // caption. Because of that, we should explicitly switch back to pop-on\n // mode\n this.mode_ = 'popOn';\n this.clearFormatting(packet.pts);\n // if a caption was being displayed, it's gone now\n this.flushDisplayed(packet.pts);\n\n // flip memory\n swap = this.displayed_;\n this.displayed_ = this.nonDisplayed_;\n this.nonDisplayed_ = swap;\n\n // start measuring the time to display the caption\n this.startPts_ = packet.pts;\n\n } else if (data === this.ROLL_UP_2_ROWS_) {\n this.rollUpRows_ = 2;\n this.setRollUp(packet.pts);\n } else if (data === this.ROLL_UP_3_ROWS_) {\n this.rollUpRows_ = 3;\n this.setRollUp(packet.pts);\n } else if (data === this.ROLL_UP_4_ROWS_) {\n this.rollUpRows_ = 4;\n this.setRollUp(packet.pts);\n } else if (data === this.CARRIAGE_RETURN_) {\n this.clearFormatting(packet.pts);\n this.flushDisplayed(packet.pts);\n this.shiftRowsUp_();\n this.startPts_ = packet.pts;\n\n } else if (data === this.BACKSPACE_) {\n if (this.mode_ === 'popOn') {\n this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n } else {\n this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n }\n } else if (data === this.ERASE_DISPLAYED_MEMORY_) {\n this.flushDisplayed(packet.pts);\n this.displayed_ = createDisplayBuffer();\n } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {\n this.nonDisplayed_ = createDisplayBuffer();\n\n } else if (data === this.RESUME_DIRECT_CAPTIONING_) {\n if (this.mode_ !== 'paintOn') {\n // NOTE: This should be removed when proper caption positioning is\n // implemented\n this.flushDisplayed(packet.pts);\n this.displayed_ = createDisplayBuffer();\n }\n this.mode_ = 'paintOn';\n this.startPts_ = packet.pts;\n\n // Append special characters to caption text\n } else if (this.isSpecialCharacter(char0, char1)) {\n // Bitmask char0 so that we can apply character transformations\n // regardless of field and data channel.\n // Then byte-shift to the left and OR with char1 so we can pass the\n // entire character code to `getCharFromCode`.\n char0 = (char0 & 0x03) << 8;\n text = getCharFromCode(char0 | char1);\n this[this.mode_](packet.pts, text);\n this.column_++;\n\n // Append extended characters to caption text\n } else if (this.isExtCharacter(char0, char1)) {\n // Extended characters always follow their \"non-extended\" equivalents.\n // IE if a \"è\" is desired, you'll always receive \"eè\"; non-compliant\n // decoders are supposed to drop the \"è\", while compliant decoders\n // backspace the \"e\" and insert \"è\".\n\n // Delete the previous character\n if (this.mode_ === 'popOn') {\n this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n } else {\n this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n }\n\n // Bitmask char0 so that we can apply character transformations\n // regardless of field and data channel.\n // Then byte-shift to the left and OR with char1 so we can pass the\n // entire character code to `getCharFromCode`.\n char0 = (char0 & 0x03) << 8;\n text = getCharFromCode(char0 | char1);\n this[this.mode_](packet.pts, text);\n this.column_++;\n\n // Process mid-row codes\n } else if (this.isMidRowCode(char0, char1)) {\n // Attributes are not additive, so clear all formatting\n this.clearFormatting(packet.pts);\n\n // According to the standard, mid-row codes\n // should be replaced with spaces, so add one now\n this[this.mode_](packet.pts, ' ');\n this.column_++;\n\n if ((char1 & 0xe) === 0xe) {\n this.addFormatting(packet.pts, ['i']);\n }\n\n if ((char1 & 0x1) === 0x1) {\n this.addFormatting(packet.pts, ['u']);\n }\n\n // Detect offset control codes and adjust cursor\n } else if (this.isOffsetControlCode(char0, char1)) {\n // Cursor position is set by indent PAC (see below) in 4-column\n // increments, with an additional offset code of 1-3 to reach any\n // of the 32 columns specified by CEA-608. So all we need to do\n // here is increment the column cursor by the given offset.\n this.column_ += (char1 & 0x03);\n\n // Detect PACs (Preamble Address Codes)\n } else if (this.isPAC(char0, char1)) {\n\n // There's no logic for PAC -> row mapping, so we have to just\n // find the row code in an array and use its index :(\n var row = ROWS.indexOf(data & 0x1f20);\n\n // Configure the caption window if we're in roll-up mode\n if (this.mode_ === 'rollUp') {\n // This implies that the base row is incorrectly set.\n // As per the recommendation in CEA-608(Base Row Implementation), defer to the number\n // of roll-up rows set.\n if (row - this.rollUpRows_ + 1 < 0) {\n row = this.rollUpRows_ - 1;\n }\n\n this.setRollUp(packet.pts, row);\n }\n\n if (row !== this.row_) {\n // formatting is only persistent for current row\n this.clearFormatting(packet.pts);\n this.row_ = row;\n }\n // All PACs can apply underline, so detect and apply\n // (All odd-numbered second bytes set underline)\n if ((char1 & 0x1) && (this.formatting_.indexOf('u') === -1)) {\n this.addFormatting(packet.pts, ['u']);\n }\n\n if ((data & 0x10) === 0x10) {\n // We've got an indent level code. Each successive even number\n // increments the column cursor by 4, so we can get the desired\n // column position by bit-shifting to the right (to get n/2)\n // and multiplying by 4.\n this.column_ = ((data & 0xe) >> 1) * 4;\n }\n\n if (this.isColorPAC(char1)) {\n // it's a color code, though we only support white, which\n // can be either normal or italicized. white italics can be\n // either 0x4e or 0x6e depending on the row, so we just\n // bitwise-and with 0xe to see if italics should be turned on\n if ((char1 & 0xe) === 0xe) {\n this.addFormatting(packet.pts, ['i']);\n }\n }\n\n // We have a normal character in char0, and possibly one in char1\n } else if (this.isNormalChar(char0)) {\n if (char1 === 0x00) {\n char1 = null;\n }\n text = getCharFromCode(char0);\n text += getCharFromCode(char1);\n this[this.mode_](packet.pts, text);\n this.column_ += text.length;\n\n } // finish data processing\n\n };\n};\nCea608Stream.prototype = new Stream();\n// Trigger a cue point that captures the current state of the\n// display buffer\nCea608Stream.prototype.flushDisplayed = function(pts) {\n var content = this.displayed_\n // remove spaces from the start and end of the string\n .map(function(row) {\n try {\n return row.trim();\n } catch (e) {\n // Ordinarily, this shouldn't happen. However, caption\n // parsing errors should not throw exceptions and\n // break playback.\n // eslint-disable-next-line no-console\n console.error('Skipping malformed caption.');\n return '';\n }\n })\n // combine all text rows to display in one cue\n .join('\\n')\n // and remove blank rows from the start and end, but not the middle\n .replace(/^\\n+|\\n+$/g, '');\n\n if (content.length) {\n this.trigger('data', {\n startPts: this.startPts_,\n endPts: pts,\n text: content,\n stream: this.name_\n });\n }\n};\n\n/**\n * Zero out the data, used for startup and on seek\n */\nCea608Stream.prototype.reset = function() {\n this.mode_ = 'popOn';\n // When in roll-up mode, the index of the last row that will\n // actually display captions. If a caption is shifted to a row\n // with a lower index than this, it is cleared from the display\n // buffer\n this.topRow_ = 0;\n this.startPts_ = 0;\n this.displayed_ = createDisplayBuffer();\n this.nonDisplayed_ = createDisplayBuffer();\n this.lastControlCode_ = null;\n\n // Track row and column for proper line-breaking and spacing\n this.column_ = 0;\n this.row_ = BOTTOM_ROW;\n this.rollUpRows_ = 2;\n\n // This variable holds currently-applied formatting\n this.formatting_ = [];\n};\n\n/**\n * Sets up control code and related constants for this instance\n */\nCea608Stream.prototype.setConstants = function() {\n // The following attributes have these uses:\n // ext_ : char0 for mid-row codes, and the base for extended\n // chars (ext_+0, ext_+1, and ext_+2 are char0s for\n // extended codes)\n // control_: char0 for control codes, except byte-shifted to the\n // left so that we can do this.control_ | CONTROL_CODE\n // offset_: char0 for tab offset codes\n //\n // It's also worth noting that control codes, and _only_ control codes,\n // differ between field 1 and field2. Field 2 control codes are always\n // their field 1 value plus 1. That's why there's the \"| field\" on the\n // control value.\n if (this.dataChannel_ === 0) {\n this.BASE_ = 0x10;\n this.EXT_ = 0x11;\n this.CONTROL_ = (0x14 | this.field_) << 8;\n this.OFFSET_ = 0x17;\n } else if (this.dataChannel_ === 1) {\n this.BASE_ = 0x18;\n this.EXT_ = 0x19;\n this.CONTROL_ = (0x1c | this.field_) << 8;\n this.OFFSET_ = 0x1f;\n }\n\n // Constants for the LSByte command codes recognized by Cea608Stream. This\n // list is not exhaustive. For a more comprehensive listing and semantics see\n // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf\n // Padding\n this.PADDING_ = 0x0000;\n // Pop-on Mode\n this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;\n this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f;\n // Roll-up Mode\n this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;\n this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;\n this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;\n this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d;\n // paint-on mode\n this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29;\n // Erasure\n this.BACKSPACE_ = this.CONTROL_ | 0x21;\n this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;\n this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;\n};\n\n/**\n * Detects if the 2-byte packet data is a special character\n *\n * Special characters have a second byte in the range 0x30 to 0x3f,\n * with the first byte being 0x11 (for data channel 1) or 0x19 (for\n * data channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are an special character\n */\nCea608Stream.prototype.isSpecialCharacter = function(char0, char1) {\n return (char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f);\n};\n\n/**\n * Detects if the 2-byte packet data is an extended character\n *\n * Extended characters have a second byte in the range 0x20 to 0x3f,\n * with the first byte being 0x12 or 0x13 (for data channel 1) or\n * 0x1a or 0x1b (for data channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are an extended character\n */\nCea608Stream.prototype.isExtCharacter = function(char0, char1) {\n return ((char0 === (this.EXT_ + 1) || char0 === (this.EXT_ + 2)) &&\n (char1 >= 0x20 && char1 <= 0x3f));\n};\n\n/**\n * Detects if the 2-byte packet is a mid-row code\n *\n * Mid-row codes have a second byte in the range 0x20 to 0x2f, with\n * the first byte being 0x11 (for data channel 1) or 0x19 (for data\n * channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are a mid-row code\n */\nCea608Stream.prototype.isMidRowCode = function(char0, char1) {\n return (char0 === this.EXT_ && (char1 >= 0x20 && char1 <= 0x2f));\n};\n\n/**\n * Detects if the 2-byte packet is an offset control code\n *\n * Offset control codes have a second byte in the range 0x21 to 0x23,\n * with the first byte being 0x17 (for data channel 1) or 0x1f (for\n * data channel 2).\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are an offset control code\n */\nCea608Stream.prototype.isOffsetControlCode = function(char0, char1) {\n return (char0 === this.OFFSET_ && (char1 >= 0x21 && char1 <= 0x23));\n};\n\n/**\n * Detects if the 2-byte packet is a Preamble Address Code\n *\n * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)\n * or 0x18 to 0x1f (for data channel 2), with the second byte in the\n * range 0x40 to 0x7f.\n *\n * @param {Integer} char0 The first byte\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the 2 bytes are a PAC\n */\nCea608Stream.prototype.isPAC = function(char0, char1) {\n return (char0 >= this.BASE_ && char0 < (this.BASE_ + 8) &&\n (char1 >= 0x40 && char1 <= 0x7f));\n};\n\n/**\n * Detects if a packet's second byte is in the range of a PAC color code\n *\n * PAC color codes have the second byte be in the range 0x40 to 0x4f, or\n * 0x60 to 0x6f.\n *\n * @param {Integer} char1 The second byte\n * @return {Boolean} Whether the byte is a color PAC\n */\nCea608Stream.prototype.isColorPAC = function(char1) {\n return ((char1 >= 0x40 && char1 <= 0x4f) || (char1 >= 0x60 && char1 <= 0x7f));\n};\n\n/**\n * Detects if a single byte is in the range of a normal character\n *\n * Normal text bytes are in the range 0x20 to 0x7f.\n *\n * @param {Integer} char The byte\n * @return {Boolean} Whether the byte is a normal character\n */\nCea608Stream.prototype.isNormalChar = function(char) {\n return (char >= 0x20 && char <= 0x7f);\n};\n\n/**\n * Configures roll-up\n *\n * @param {Integer} pts Current PTS\n * @param {Integer} newBaseRow Used by PACs to slide the current window to\n * a new position\n */\nCea608Stream.prototype.setRollUp = function(pts, newBaseRow) {\n // Reset the base row to the bottom row when switching modes\n if (this.mode_ !== 'rollUp') {\n this.row_ = BOTTOM_ROW;\n this.mode_ = 'rollUp';\n // Spec says to wipe memories when switching to roll-up\n this.flushDisplayed(pts);\n this.nonDisplayed_ = createDisplayBuffer();\n this.displayed_ = createDisplayBuffer();\n }\n\n if (newBaseRow !== undefined && newBaseRow !== this.row_) {\n // move currently displayed captions (up or down) to the new base row\n for (var i = 0; i < this.rollUpRows_; i++) {\n this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];\n this.displayed_[this.row_ - i] = '';\n }\n }\n\n if (newBaseRow === undefined) {\n newBaseRow = this.row_;\n }\n\n this.topRow_ = newBaseRow - this.rollUpRows_ + 1;\n};\n\n// Adds the opening HTML tag for the passed character to the caption text,\n// and keeps track of it for later closing\nCea608Stream.prototype.addFormatting = function(pts, format) {\n this.formatting_ = this.formatting_.concat(format);\n var text = format.reduce(function(text, format) {\n return text + '<' + format + '>';\n }, '');\n this[this.mode_](pts, text);\n};\n\n// Adds HTML closing tags for current formatting to caption text and\n// clears remembered formatting\nCea608Stream.prototype.clearFormatting = function(pts) {\n if (!this.formatting_.length) {\n return;\n }\n var text = this.formatting_.reverse().reduce(function(text, format) {\n return text + '';\n }, '');\n this.formatting_ = [];\n this[this.mode_](pts, text);\n};\n\n// Mode Implementations\nCea608Stream.prototype.popOn = function(pts, text) {\n var baseRow = this.nonDisplayed_[this.row_];\n\n // buffer characters\n baseRow += text;\n this.nonDisplayed_[this.row_] = baseRow;\n};\n\nCea608Stream.prototype.rollUp = function(pts, text) {\n var baseRow = this.displayed_[this.row_];\n\n baseRow += text;\n this.displayed_[this.row_] = baseRow;\n\n};\n\nCea608Stream.prototype.shiftRowsUp_ = function() {\n var i;\n // clear out inactive rows\n for (i = 0; i < this.topRow_; i++) {\n this.displayed_[i] = '';\n }\n for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {\n this.displayed_[i] = '';\n }\n // shift displayed rows up\n for (i = this.topRow_; i < this.row_; i++) {\n this.displayed_[i] = this.displayed_[i + 1];\n }\n // clear out the bottom row\n this.displayed_[this.row_] = '';\n};\n\nCea608Stream.prototype.paintOn = function(pts, text) {\n var baseRow = this.displayed_[this.row_];\n\n baseRow += text;\n this.displayed_[this.row_] = baseRow;\n};\n\n// exports\nmodule.exports = {\n CaptionStream: CaptionStream,\n Cea608Stream: Cea608Stream\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Reads in-band CEA-708 captions out of FMP4 segments.\n * @see https://en.wikipedia.org/wiki/CEA-708\n */\n'use strict';\n\nvar discardEmulationPreventionBytes = require('../tools/caption-packet-parser').discardEmulationPreventionBytes;\nvar CaptionStream = require('../m2ts/caption-stream').CaptionStream;\nvar probe = require('./probe');\nvar inspect = require('../tools/mp4-inspector');\n\n/**\n * Maps an offset in the mdat to a sample based on the the size of the samples.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Number} offset - The offset into the mdat\n * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n * @return {?Object} The matching sample, or null if no match was found.\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\nvar mapToSample = function(offset, samples) {\n var approximateOffset = offset;\n\n for (var i = 0; i < samples.length; i++) {\n var sample = samples[i];\n\n if (approximateOffset < sample.size) {\n return sample;\n }\n\n approximateOffset -= sample.size;\n }\n\n return null;\n};\n\n/**\n * Finds SEI nal units contained in a Media Data Box.\n * Assumes that `parseSamples` has been called first.\n *\n * @param {Uint8Array} avcStream - The bytes of the mdat\n * @param {Object[]} samples - The samples parsed out by `parseSamples`\n * @param {Number} trackId - The trackId of this video track\n * @return {Object[]} seiNals - the parsed SEI NALUs found.\n * The contents of the seiNal should match what is expected by\n * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n *\n * @see ISO-BMFF-12/2015, Section 8.1.1\n * @see Rec. ITU-T H.264, 7.3.2.3.1\n **/\nvar findSeiNals = function(avcStream, samples, trackId) {\n var\n avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n result = [],\n seiNal,\n i,\n length,\n lastMatchedSample;\n\n for (i = 0; i + 4 < avcStream.length; i += length) {\n length = avcView.getUint32(i);\n i += 4;\n\n // Bail if this doesn't appear to be an H264 stream\n if (length <= 0) {\n continue;\n }\n\n switch (avcStream[i] & 0x1F) {\n case 0x06:\n var data = avcStream.subarray(i + 1, i + 1 + length);\n var matchingSample = mapToSample(i, samples);\n\n seiNal = {\n nalUnitType: 'sei_rbsp',\n size: length,\n data: data,\n escapedRBSP: discardEmulationPreventionBytes(data),\n trackId: trackId\n };\n\n if (matchingSample) {\n seiNal.pts = matchingSample.pts;\n seiNal.dts = matchingSample.dts;\n lastMatchedSample = matchingSample;\n } else {\n // If a matching sample cannot be found, use the last\n // sample's values as they should be as close as possible\n seiNal.pts = lastMatchedSample.pts;\n seiNal.dts = lastMatchedSample.dts;\n }\n\n result.push(seiNal);\n break;\n default:\n break;\n }\n }\n\n return result;\n};\n\n/**\n * Parses sample information out of Track Run Boxes and calculates\n * the absolute presentation and decode timestamps of each sample.\n *\n * @param {Array} truns - The Trun Run boxes to be parsed\n * @param {Number} baseMediaDecodeTime - base media decode time from tfdt\n @see ISO-BMFF-12/2015, Section 8.8.12\n * @param {Object} tfhd - The parsed Track Fragment Header\n * @see inspect.parseTfhd\n * @return {Object[]} the parsed samples\n *\n * @see ISO-BMFF-12/2015, Section 8.8.8\n **/\nvar parseSamples = function(truns, baseMediaDecodeTime, tfhd) {\n var currentDts = baseMediaDecodeTime;\n var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n var defaultSampleSize = tfhd.defaultSampleSize || 0;\n var trackId = tfhd.trackId;\n var allSamples = [];\n\n truns.forEach(function(trun) {\n // Note: We currently do not parse the sample table as well\n // as the trun. It's possible some sources will require this.\n // moov > trak > mdia > minf > stbl\n var trackRun = inspect.parseTrun(trun);\n var samples = trackRun.samples;\n\n samples.forEach(function(sample) {\n if (sample.duration === undefined) {\n sample.duration = defaultSampleDuration;\n }\n if (sample.size === undefined) {\n sample.size = defaultSampleSize;\n }\n sample.trackId = trackId;\n sample.dts = currentDts;\n if (sample.compositionTimeOffset === undefined) {\n sample.compositionTimeOffset = 0;\n }\n sample.pts = currentDts + sample.compositionTimeOffset;\n\n currentDts += sample.duration;\n });\n\n allSamples = allSamples.concat(samples);\n });\n\n return allSamples;\n};\n\n/**\n * Parses out caption nals from an FMP4 segment's video tracks.\n *\n * @param {Uint8Array} segment - The bytes of a single segment\n * @param {Number} videoTrackId - The trackId of a video track in the segment\n * @return {Object.} A mapping of video trackId to\n * a list of seiNals found in that track\n **/\nvar parseCaptionNals = function(segment, videoTrackId) {\n // To get the samples\n var trafs = probe.findBox(segment, ['moof', 'traf']);\n // To get SEI NAL units\n var mdats = probe.findBox(segment, ['mdat']);\n var captionNals = {};\n var mdatTrafPairs = [];\n\n // Pair up each traf with a mdat as moofs and mdats are in pairs\n mdats.forEach(function(mdat, index) {\n var matchingTraf = trafs[index];\n mdatTrafPairs.push({\n mdat: mdat,\n traf: matchingTraf\n });\n });\n\n mdatTrafPairs.forEach(function(pair) {\n var mdat = pair.mdat;\n var traf = pair.traf;\n var tfhd = probe.findBox(traf, ['tfhd']);\n // Exactly 1 tfhd per traf\n var headerInfo = inspect.parseTfhd(tfhd[0]);\n var trackId = headerInfo.trackId;\n var tfdt = probe.findBox(traf, ['tfdt']);\n // Either 0 or 1 tfdt per traf\n var baseMediaDecodeTime = (tfdt.length > 0) ? inspect.parseTfdt(tfdt[0]).baseMediaDecodeTime : 0;\n var truns = probe.findBox(traf, ['trun']);\n var samples;\n var seiNals;\n\n // Only parse video data for the chosen video track\n if (videoTrackId === trackId && truns.length > 0) {\n samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n\n seiNals = findSeiNals(mdat, samples, trackId);\n\n if (!captionNals[trackId]) {\n captionNals[trackId] = [];\n }\n\n captionNals[trackId] = captionNals[trackId].concat(seiNals);\n }\n });\n\n return captionNals;\n};\n\n/**\n * Parses out inband captions from an MP4 container and returns\n * caption objects that can be used by WebVTT and the TextTrack API.\n * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number} trackId - The id of the video track to parse\n * @param {Number} timescale - The timescale for the video track from the init segment\n *\n * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n * @return {String} parsedCaptions[].text - The visible content of the caption\n **/\nvar parseEmbeddedCaptions = function(segment, trackId, timescale) {\n var seiNals;\n\n // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n if (trackId === null) {\n return null;\n }\n\n seiNals = parseCaptionNals(segment, trackId);\n\n return {\n seiNals: seiNals[trackId],\n timescale: timescale\n };\n};\n\n/**\n * Converts SEI NALUs into captions that can be used by video.js\n **/\nvar CaptionParser = function() {\n var isInitialized = false;\n var captionStream;\n\n // Stores segments seen before trackId and timescale are set\n var segmentCache;\n // Stores video track ID of the track being parsed\n var trackId;\n // Stores the timescale of the track being parsed\n var timescale;\n // Stores captions parsed so far\n var parsedCaptions;\n // Stores whether we are receiving partial data or not\n var parsingPartial;\n\n /**\n * A method to indicate whether a CaptionParser has been initalized\n * @returns {Boolean}\n **/\n this.isInitialized = function() {\n return isInitialized;\n };\n\n /**\n * Initializes the underlying CaptionStream, SEI NAL parsing\n * and management, and caption collection\n **/\n this.init = function(options) {\n captionStream = new CaptionStream();\n isInitialized = true;\n parsingPartial = options ? options.isPartial : false;\n\n // Collect dispatched captions\n captionStream.on('data', function(event) {\n // Convert to seconds in the source's timescale\n event.startTime = event.startPts / timescale;\n event.endTime = event.endPts / timescale;\n\n parsedCaptions.captions.push(event);\n parsedCaptions.captionStreams[event.stream] = true;\n });\n };\n\n /**\n * Determines if a new video track will be selected\n * or if the timescale changed\n * @return {Boolean}\n **/\n this.isNewInit = function(videoTrackIds, timescales) {\n if ((videoTrackIds && videoTrackIds.length === 0) ||\n (timescales && typeof timescales === 'object' &&\n Object.keys(timescales).length === 0)) {\n return false;\n }\n\n return trackId !== videoTrackIds[0] ||\n timescale !== timescales[trackId];\n };\n\n /**\n * Parses out SEI captions and interacts with underlying\n * CaptionStream to return dispatched captions\n *\n * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n * @param {Object.} timescales - The timescales found in the init segment\n * @see parseEmbeddedCaptions\n * @see m2ts/caption-stream.js\n **/\n this.parse = function(segment, videoTrackIds, timescales) {\n var parsedData;\n\n if (!this.isInitialized()) {\n return null;\n\n // This is not likely to be a video segment\n } else if (!videoTrackIds || !timescales) {\n return null;\n\n } else if (this.isNewInit(videoTrackIds, timescales)) {\n // Use the first video track only as there is no\n // mechanism to switch to other video tracks\n trackId = videoTrackIds[0];\n timescale = timescales[trackId];\n\n // If an init segment has not been seen yet, hold onto segment\n // data until we have one.\n // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n } else if (trackId === null || !timescale) {\n segmentCache.push(segment);\n return null;\n }\n\n // Now that a timescale and trackId is set, parse cached segments\n while (segmentCache.length > 0) {\n var cachedSegment = segmentCache.shift();\n\n this.parse(cachedSegment, videoTrackIds, timescales);\n }\n\n parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n\n if (parsedData === null || !parsedData.seiNals) {\n return null;\n }\n\n this.pushNals(parsedData.seiNals);\n // Force the parsed captions to be dispatched\n this.flushStream();\n\n return parsedCaptions;\n };\n\n /**\n * Pushes SEI NALUs onto CaptionStream\n * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n * Assumes that `parseCaptionNals` has been called first\n * @see m2ts/caption-stream.js\n **/\n this.pushNals = function(nals) {\n if (!this.isInitialized() || !nals || nals.length === 0) {\n return null;\n }\n\n nals.forEach(function(nal) {\n captionStream.push(nal);\n });\n };\n\n /**\n * Flushes underlying CaptionStream to dispatch processed, displayable captions\n * @see m2ts/caption-stream.js\n **/\n this.flushStream = function() {\n if (!this.isInitialized()) {\n return null;\n }\n\n if (!parsingPartial) {\n captionStream.flush();\n } else {\n captionStream.partialFlush();\n }\n };\n\n /**\n * Reset caption buckets for new data\n **/\n this.clearParsedCaptions = function() {\n parsedCaptions.captions = [];\n parsedCaptions.captionStreams = {};\n };\n\n /**\n * Resets underlying CaptionStream\n * @see m2ts/caption-stream.js\n **/\n this.resetCaptionStream = function() {\n if (!this.isInitialized()) {\n return null;\n }\n\n captionStream.reset();\n };\n\n /**\n * Convenience method to clear all captions flushed from the\n * CaptionStream and still being parsed\n * @see m2ts/caption-stream.js\n **/\n this.clearAllCaptions = function() {\n this.clearParsedCaptions();\n this.resetCaptionStream();\n };\n\n /**\n * Reset caption parser\n **/\n this.reset = function() {\n segmentCache = [];\n trackId = null;\n timescale = null;\n\n if (!parsedCaptions) {\n parsedCaptions = {\n captions: [],\n // CC1, CC2, CC3, CC4\n captionStreams: {}\n };\n } else {\n this.clearParsedCaptions();\n }\n\n this.resetCaptionStream();\n };\n\n this.reset();\n};\n\nmodule.exports = CaptionParser;\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\n'use strict';\n\nmodule.exports = {\n H264_STREAM_TYPE: 0x1B,\n ADTS_STREAM_TYPE: 0x0F,\n METADATA_STREAM_TYPE: 0x15\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Accepts program elementary stream (PES) data events and corrects\n * decode and presentation time stamps to account for a rollover\n * of the 33 bit value.\n */\n\n'use strict';\n\nvar Stream = require('../utils/stream');\n\nvar MAX_TS = 8589934592;\n\nvar RO_THRESH = 4294967296;\n\nvar TYPE_SHARED = 'shared';\n\nvar handleRollover = function(value, reference) {\n var direction = 1;\n\n if (value > reference) {\n // If the current timestamp value is greater than our reference timestamp and we detect a\n // timestamp rollover, this means the roll over is happening in the opposite direction.\n // Example scenario: Enter a long stream/video just after a rollover occurred. The reference\n // point will be set to a small number, e.g. 1. The user then seeks backwards over the\n // rollover point. In loading this segment, the timestamp values will be very large,\n // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust\n // the time stamp to be `value - 2^33`.\n direction = -1;\n }\n\n // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will\n // cause an incorrect adjustment.\n while (Math.abs(reference - value) > RO_THRESH) {\n value += (direction * MAX_TS);\n }\n\n return value;\n};\n\nvar TimestampRolloverStream = function(type) {\n var lastDTS, referenceDTS;\n\n TimestampRolloverStream.prototype.init.call(this);\n\n // The \"shared\" type is used in cases where a stream will contain muxed\n // video and audio. We could use `undefined` here, but having a string\n // makes debugging a little clearer.\n this.type_ = type || TYPE_SHARED;\n\n this.push = function(data) {\n\n // Any \"shared\" rollover streams will accept _all_ data. Otherwise,\n // streams will only accept data that matches their type.\n if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {\n return;\n }\n\n if (referenceDTS === undefined) {\n referenceDTS = data.dts;\n }\n\n data.dts = handleRollover(data.dts, referenceDTS);\n data.pts = handleRollover(data.pts, referenceDTS);\n\n lastDTS = data.dts;\n\n this.trigger('data', data);\n };\n\n this.flush = function() {\n referenceDTS = lastDTS;\n this.trigger('done');\n };\n\n this.endTimeline = function() {\n this.flush();\n this.trigger('endedtimeline');\n };\n\n this.discontinuity = function() {\n referenceDTS = void 0;\n lastDTS = void 0;\n };\n\n this.reset = function() {\n this.discontinuity();\n this.trigger('reset');\n };\n};\n\nTimestampRolloverStream.prototype = new Stream();\n\nmodule.exports = {\n TimestampRolloverStream: TimestampRolloverStream,\n handleRollover: handleRollover\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about TS Segments.\n */\n'use strict';\n\nvar StreamTypes = require('./stream-types.js');\n\nvar parsePid = function(packet) {\n var pid = packet[1] & 0x1f;\n pid <<= 8;\n pid |= packet[2];\n return pid;\n};\n\nvar parsePayloadUnitStartIndicator = function(packet) {\n return !!(packet[1] & 0x40);\n};\n\nvar parseAdaptionField = function(packet) {\n var offset = 0;\n // if an adaption field is present, its length is specified by the\n // fifth byte of the TS packet header. The adaptation field is\n // used to add stuffing to PES packets that don't fill a complete\n // TS packet, and to specify some forms of timing and control data\n // that we do not currently use.\n if (((packet[3] & 0x30) >>> 4) > 0x01) {\n offset += packet[4] + 1;\n }\n return offset;\n};\n\nvar parseType = function(packet, pmtPid) {\n var pid = parsePid(packet);\n if (pid === 0) {\n return 'pat';\n } else if (pid === pmtPid) {\n return 'pmt';\n } else if (pmtPid) {\n return 'pes';\n }\n return null;\n};\n\nvar parsePat = function(packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n var offset = 4 + parseAdaptionField(packet);\n\n if (pusi) {\n offset += packet[offset] + 1;\n }\n\n return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n};\n\nvar parsePmt = function(packet) {\n var programMapTable = {};\n var pusi = parsePayloadUnitStartIndicator(packet);\n var payloadOffset = 4 + parseAdaptionField(packet);\n\n if (pusi) {\n payloadOffset += packet[payloadOffset] + 1;\n }\n\n // PMTs can be sent ahead of the time when they should actually\n // take effect. We don't believe this should ever be the case\n // for HLS but we'll ignore \"forward\" PMT declarations if we see\n // them. Future PMT declarations have the current_next_indicator\n // set to zero.\n if (!(packet[payloadOffset + 5] & 0x01)) {\n return;\n }\n\n var sectionLength, tableEnd, programInfoLength;\n // the mapping table ends at the end of the current section\n sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n tableEnd = 3 + sectionLength - 4;\n\n // to determine where the table is, we have to figure out how\n // long the program info descriptors are\n programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11];\n\n // advance the offset to the first entry in the mapping table\n var offset = 12 + programInfoLength;\n while (offset < tableEnd) {\n var i = payloadOffset + offset;\n // add an entry that maps the elementary_pid to the stream_type\n programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i];\n\n // move to the next table entry\n // skip past the elementary stream descriptors, if present\n offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n }\n return programMapTable;\n};\n\nvar parsePesType = function(packet, programMapTable) {\n var pid = parsePid(packet);\n var type = programMapTable[pid];\n switch (type) {\n case StreamTypes.H264_STREAM_TYPE:\n return 'video';\n case StreamTypes.ADTS_STREAM_TYPE:\n return 'audio';\n case StreamTypes.METADATA_STREAM_TYPE:\n return 'timed-metadata';\n default:\n return null;\n }\n};\n\nvar parsePesTime = function(packet) {\n var pusi = parsePayloadUnitStartIndicator(packet);\n if (!pusi) {\n return null;\n }\n\n var offset = 4 + parseAdaptionField(packet);\n\n if (offset >= packet.byteLength) {\n // From the H 222.0 MPEG-TS spec\n // \"For transport stream packets carrying PES packets, stuffing is needed when there\n // is insufficient PES packet data to completely fill the transport stream packet\n // payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n // the sum of the lengths of the data elements in it, so that the payload bytes\n // remaining after the adaptation field exactly accommodates the available PES packet\n // data.\"\n //\n // If the offset is >= the length of the packet, then the packet contains no data\n // and instead is just adaption field stuffing bytes\n return null;\n }\n\n var pes = null;\n var ptsDtsFlags;\n\n // PES packets may be annotated with a PTS value, or a PTS value\n // and a DTS value. Determine what combination of values is\n // available to work with.\n ptsDtsFlags = packet[offset + 7];\n\n // PTS and DTS are normally stored as a 33-bit number. Javascript\n // performs all bitwise operations on 32-bit integers but javascript\n // supports a much greater range (52-bits) of integer using standard\n // mathematical operations.\n // We construct a 31-bit value using bitwise operators over the 31\n // most significant bits and then multiply by 4 (equal to a left-shift\n // of 2) before we add the final 2 least significant bits of the\n // timestamp (equal to an OR.)\n if (ptsDtsFlags & 0xC0) {\n pes = {};\n // the PTS and DTS are not written out directly. For information\n // on how they are encoded, see\n // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n pes.pts = (packet[offset + 9] & 0x0E) << 27 |\n (packet[offset + 10] & 0xFF) << 20 |\n (packet[offset + 11] & 0xFE) << 12 |\n (packet[offset + 12] & 0xFF) << 5 |\n (packet[offset + 13] & 0xFE) >>> 3;\n pes.pts *= 4; // Left shift by 2\n pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n pes.dts = pes.pts;\n if (ptsDtsFlags & 0x40) {\n pes.dts = (packet[offset + 14] & 0x0E) << 27 |\n (packet[offset + 15] & 0xFF) << 20 |\n (packet[offset + 16] & 0xFE) << 12 |\n (packet[offset + 17] & 0xFF) << 5 |\n (packet[offset + 18] & 0xFE) >>> 3;\n pes.dts *= 4; // Left shift by 2\n pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n }\n }\n return pes;\n};\n\nvar parseNalUnitType = function(type) {\n switch (type) {\n case 0x05:\n return 'slice_layer_without_partitioning_rbsp_idr';\n case 0x06:\n return 'sei_rbsp';\n case 0x07:\n return 'seq_parameter_set_rbsp';\n case 0x08:\n return 'pic_parameter_set_rbsp';\n case 0x09:\n return 'access_unit_delimiter_rbsp';\n default:\n return null;\n }\n};\n\nvar videoPacketContainsKeyFrame = function(packet) {\n var offset = 4 + parseAdaptionField(packet);\n var frameBuffer = packet.subarray(offset);\n var frameI = 0;\n var frameSyncPoint = 0;\n var foundKeyFrame = false;\n var nalType;\n\n // advance the sync point to a NAL start, if necessary\n for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n if (frameBuffer[frameSyncPoint + 2] === 1) {\n // the sync point is properly aligned\n frameI = frameSyncPoint + 5;\n break;\n }\n }\n\n while (frameI < frameBuffer.byteLength) {\n // look at the current byte to determine if we've hit the end of\n // a NAL unit boundary\n switch (frameBuffer[frameI]) {\n case 0:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0) {\n frameI += 2;\n break;\n } else if (frameBuffer[frameI - 2] !== 0) {\n frameI++;\n break;\n }\n\n if (frameSyncPoint + 3 !== frameI - 2) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n }\n\n // drop trailing zeroes\n do {\n frameI++;\n } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n case 1:\n // skip past non-sync sequences\n if (frameBuffer[frameI - 1] !== 0 ||\n frameBuffer[frameI - 2] !== 0) {\n frameI += 3;\n break;\n }\n\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n frameSyncPoint = frameI - 2;\n frameI += 3;\n break;\n default:\n // the current byte isn't a one or zero, so it cannot be part\n // of a sync sequence\n frameI += 3;\n break;\n }\n }\n frameBuffer = frameBuffer.subarray(frameSyncPoint);\n frameI -= frameSyncPoint;\n frameSyncPoint = 0;\n // parse the final nal\n if (frameBuffer && frameBuffer.byteLength > 3) {\n nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n foundKeyFrame = true;\n }\n }\n\n return foundKeyFrame;\n};\n\n\nmodule.exports = {\n parseType: parseType,\n parsePat: parsePat,\n parsePmt: parsePmt,\n parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n parsePesType: parsePesType,\n parsePesTime: parsePesTime,\n videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Utilities to detect basic properties and metadata about Aac data.\n */\n'use strict';\n\nvar ADTS_SAMPLING_FREQUENCIES = [\n 96000,\n 88200,\n 64000,\n 48000,\n 44100,\n 32000,\n 24000,\n 22050,\n 16000,\n 12000,\n 11025,\n 8000,\n 7350\n];\n\nvar isLikelyAacData = function(data) {\n if ((data[0] === 'I'.charCodeAt(0)) &&\n (data[1] === 'D'.charCodeAt(0)) &&\n (data[2] === '3'.charCodeAt(0))) {\n return true;\n }\n return false;\n};\n\nvar parseSyncSafeInteger = function(data) {\n return (data[0] << 21) |\n (data[1] << 14) |\n (data[2] << 7) |\n (data[3]);\n};\n\n// return a percent-encoded representation of the specified byte range\n// @see http://en.wikipedia.org/wiki/Percent-encoding\nvar percentEncode = function(bytes, start, end) {\n var i, result = '';\n for (i = start; i < end; i++) {\n result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n }\n return result;\n};\n\n// return the string representation of the specified byte range,\n// interpreted as ISO-8859-1.\nvar parseIso88591 = function(bytes, start, end) {\n return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n};\n\nvar parseId3TagSize = function(header, byteIndex) {\n var\n returnSize = (header[byteIndex + 6] << 21) |\n (header[byteIndex + 7] << 14) |\n (header[byteIndex + 8] << 7) |\n (header[byteIndex + 9]),\n flags = header[byteIndex + 5],\n footerPresent = (flags & 16) >> 4;\n\n if (footerPresent) {\n return returnSize + 20;\n }\n return returnSize + 10;\n};\n\nvar parseAdtsSize = function(header, byteIndex) {\n var\n lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n middle = header[byteIndex + 4] << 3,\n highTwo = header[byteIndex + 3] & 0x3 << 11;\n\n return (highTwo | middle) | lowThree;\n};\n\nvar parseType = function(header, byteIndex) {\n if ((header[byteIndex] === 'I'.charCodeAt(0)) &&\n (header[byteIndex + 1] === 'D'.charCodeAt(0)) &&\n (header[byteIndex + 2] === '3'.charCodeAt(0))) {\n return 'timed-metadata';\n } else if ((header[byteIndex] & 0xff === 0xff) &&\n ((header[byteIndex + 1] & 0xf0) === 0xf0)) {\n return 'audio';\n }\n return null;\n};\n\nvar parseSampleRate = function(packet) {\n var i = 0;\n\n while (i + 5 < packet.length) {\n if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n // If a valid header was not found, jump one forward and attempt to\n // find a valid ADTS header starting at the next byte\n i++;\n continue;\n }\n return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];\n }\n\n return null;\n};\n\nvar parseAacTimestamp = function(packet) {\n var frameStart, frameSize, frame, frameHeader;\n\n // find the start of the first frame and the end of the tag\n frameStart = 10;\n if (packet[5] & 0x40) {\n // advance the frame start past the extended header\n frameStart += 4; // header size field\n frameStart += parseSyncSafeInteger(packet.subarray(10, 14));\n }\n\n // parse one or more ID3 frames\n // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n do {\n // determine the number of bytes in this frame\n frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));\n if (frameSize < 1) {\n return null;\n }\n frameHeader = String.fromCharCode(packet[frameStart],\n packet[frameStart + 1],\n packet[frameStart + 2],\n packet[frameStart + 3]);\n\n if (frameHeader === 'PRIV') {\n frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n\n for (var i = 0; i < frame.byteLength; i++) {\n if (frame[i] === 0) {\n var owner = parseIso88591(frame, 0, i);\n if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n var d = frame.subarray(i + 1);\n var size = ((d[3] & 0x01) << 30) |\n (d[4] << 22) |\n (d[5] << 14) |\n (d[6] << 6) |\n (d[7] >>> 2);\n size *= 4;\n size += d[7] & 0x03;\n\n return size;\n }\n break;\n }\n }\n }\n\n frameStart += 10; // advance past the frame header\n frameStart += frameSize; // advance past the frame body\n } while (frameStart < packet.byteLength);\n return null;\n};\n\nmodule.exports = {\n isLikelyAacData: isLikelyAacData,\n parseId3TagSize: parseId3TagSize,\n parseAdtsSize: parseAdtsSize,\n parseType: parseType,\n parseSampleRate: parseSampleRate,\n parseAacTimestamp: parseAacTimestamp\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n */\nvar\n ONE_SECOND_IN_TS = 90000, // 90kHz clock\n secondsToVideoTs,\n secondsToAudioTs,\n videoTsToSeconds,\n audioTsToSeconds,\n audioTsToVideoTs,\n videoTsToAudioTs,\n metadataTsToSeconds;\n\nsecondsToVideoTs = function(seconds) {\n return seconds * ONE_SECOND_IN_TS;\n};\n\nsecondsToAudioTs = function(seconds, sampleRate) {\n return seconds * sampleRate;\n};\n\nvideoTsToSeconds = function(timestamp) {\n return timestamp / ONE_SECOND_IN_TS;\n};\n\naudioTsToSeconds = function(timestamp, sampleRate) {\n return timestamp / sampleRate;\n};\n\naudioTsToVideoTs = function(timestamp, sampleRate) {\n return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n};\n\nvideoTsToAudioTs = function(timestamp, sampleRate) {\n return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n};\n\n/**\n * Adjust ID3 tag or caption timing information by the timeline pts values\n * (if keepOriginalTimestamps is false) and convert to seconds\n */\nmetadataTsToSeconds = function(timestamp, timelineStartPts, keepOriginalTimestamps) {\n return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);\n};\n\nmodule.exports = {\n ONE_SECOND_IN_TS: ONE_SECOND_IN_TS,\n secondsToVideoTs: secondsToVideoTs,\n secondsToAudioTs: secondsToAudioTs,\n videoTsToSeconds: videoTsToSeconds,\n audioTsToSeconds: audioTsToSeconds,\n audioTsToVideoTs: audioTsToVideoTs,\n videoTsToAudioTs: videoTsToAudioTs,\n metadataTsToSeconds: metadataTsToSeconds\n};\n","/**\n * mux.js\n *\n * Copyright (c) Brightcove\n * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n *\n * Parse mpeg2 transport stream packets to extract basic timing information\n */\n'use strict';\n\nvar StreamTypes = require('../m2ts/stream-types.js');\nvar handleRollover = require('../m2ts/timestamp-rollover-stream.js').handleRollover;\nvar probe = {};\nprobe.ts = require('../m2ts/probe.js');\nprobe.aac = require('../aac/utils.js');\nvar ONE_SECOND_IN_TS = require('../utils/clock').ONE_SECOND_IN_TS;\n\nvar\n MP2T_PACKET_LENGTH = 188, // bytes\n SYNC_BYTE = 0x47;\n\n/**\n * walks through segment data looking for pat and pmt packets to parse out\n * program map table information\n */\nvar parsePsi_ = function(bytes, pmt) {\n var\n startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet, type;\n\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pat':\n if (!pmt.pid) {\n pmt.pid = probe.ts.parsePat(packet);\n }\n break;\n case 'pmt':\n if (!pmt.table) {\n pmt.table = probe.ts.parsePmt(packet);\n }\n break;\n default:\n break;\n }\n\n // Found the pat and pmt, we can stop walking the segment\n if (pmt.pid && pmt.table) {\n return;\n }\n\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n }\n\n // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n startIndex++;\n endIndex++;\n }\n};\n\n/**\n * walks through the segment data from the start and end to get timing information\n * for the first and last audio pes packets\n */\nvar parseAudioPes_ = function(bytes, pmt, result) {\n var\n startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet, type, pesType, pusi, parsed;\n\n var endLoop = false;\n\n // Start walking from start of segment to get first audio packet\n while (endIndex <= bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE &&\n (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n break;\n default:\n break;\n }\n\n if (endLoop) {\n break;\n }\n\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n }\n\n // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n startIndex++;\n endIndex++;\n }\n\n // Start walking from end of segment to get last audio packet\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE &&\n (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'audio' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'audio';\n result.audio.push(parsed);\n endLoop = true;\n }\n }\n break;\n default:\n break;\n }\n\n if (endLoop) {\n break;\n }\n\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n }\n\n // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n startIndex--;\n endIndex--;\n }\n};\n\n/**\n * walks through the segment data from the start and end to get timing information\n * for the first and last video pes packets as well as timing information for the first\n * key frame.\n */\nvar parseVideoPes_ = function(bytes, pmt, result) {\n var\n startIndex = 0,\n endIndex = MP2T_PACKET_LENGTH,\n packet, type, pesType, pusi, parsed, frame, i, pes;\n\n var endLoop = false;\n\n var currentFrame = {\n data: [],\n size: 0\n };\n\n // Start walking from start of segment to get first video packet\n while (endIndex < bytes.byteLength) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'video') {\n if (pusi && !endLoop) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n if (!result.firstKeyFrame) {\n if (pusi) {\n if (currentFrame.size !== 0) {\n frame = new Uint8Array(currentFrame.size);\n i = 0;\n while (currentFrame.data.length) {\n pes = currentFrame.data.shift();\n frame.set(pes, i);\n i += pes.byteLength;\n }\n if (probe.ts.videoPacketContainsKeyFrame(frame)) {\n var firstKeyFrame = probe.ts.parsePesTime(frame);\n\n // PTS/DTS may not be available. Simply *not* setting\n // the keyframe seems to work fine with HLS playback\n // and definitely preferable to a crash with TypeError...\n if (firstKeyFrame) {\n result.firstKeyFrame = firstKeyFrame;\n result.firstKeyFrame.type = 'video';\n } else {\n // eslint-disable-next-line\n console.warn(\n 'Failed to extract PTS/DTS from PES at first keyframe. ' +\n 'This could be an unusual TS segment, or else mux.js did not ' +\n 'parse your TS segment correctly. If you know your TS ' +\n 'segments do contain PTS/DTS on keyframes please file a bug ' +\n 'report! You can try ffprobe to double check for yourself.'\n );\n }\n }\n currentFrame.size = 0;\n }\n }\n currentFrame.data.push(packet);\n currentFrame.size += packet.byteLength;\n }\n }\n break;\n default:\n break;\n }\n\n if (endLoop && result.firstKeyFrame) {\n break;\n }\n\n startIndex += MP2T_PACKET_LENGTH;\n endIndex += MP2T_PACKET_LENGTH;\n continue;\n }\n\n // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n startIndex++;\n endIndex++;\n }\n\n // Start walking from end of segment to get last video packet\n endIndex = bytes.byteLength;\n startIndex = endIndex - MP2T_PACKET_LENGTH;\n endLoop = false;\n while (startIndex >= 0) {\n // Look for a pair of start and end sync bytes in the data..\n if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n // We found a packet\n packet = bytes.subarray(startIndex, endIndex);\n type = probe.ts.parseType(packet, pmt.pid);\n\n switch (type) {\n case 'pes':\n pesType = probe.ts.parsePesType(packet, pmt.table);\n pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n if (pesType === 'video' && pusi) {\n parsed = probe.ts.parsePesTime(packet);\n if (parsed) {\n parsed.type = 'video';\n result.video.push(parsed);\n endLoop = true;\n }\n }\n break;\n default:\n break;\n }\n\n if (endLoop) {\n break;\n }\n\n startIndex -= MP2T_PACKET_LENGTH;\n endIndex -= MP2T_PACKET_LENGTH;\n continue;\n }\n\n // If we get here, we have somehow become de-synchronized and we need to step\n // forward one byte at a time until we find a pair of sync bytes that denote\n // a packet\n startIndex--;\n endIndex--;\n }\n};\n\n/**\n * Adjusts the timestamp information for the segment to account for\n * rollover and convert to seconds based on pes packet timescale (90khz clock)\n */\nvar adjustTimestamp_ = function(segmentInfo, baseTimestamp) {\n if (segmentInfo.audio && segmentInfo.audio.length) {\n var audioBaseTimestamp = baseTimestamp;\n if (typeof audioBaseTimestamp === 'undefined') {\n audioBaseTimestamp = segmentInfo.audio[0].dts;\n }\n segmentInfo.audio.forEach(function(info) {\n info.dts = handleRollover(info.dts, audioBaseTimestamp);\n info.pts = handleRollover(info.pts, audioBaseTimestamp);\n // time in seconds\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n }\n\n if (segmentInfo.video && segmentInfo.video.length) {\n var videoBaseTimestamp = baseTimestamp;\n if (typeof videoBaseTimestamp === 'undefined') {\n videoBaseTimestamp = segmentInfo.video[0].dts;\n }\n segmentInfo.video.forEach(function(info) {\n info.dts = handleRollover(info.dts, videoBaseTimestamp);\n info.pts = handleRollover(info.pts, videoBaseTimestamp);\n // time in seconds\n info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n });\n if (segmentInfo.firstKeyFrame) {\n var frame = segmentInfo.firstKeyFrame;\n frame.dts = handleRollover(frame.dts, videoBaseTimestamp);\n frame.pts = handleRollover(frame.pts, videoBaseTimestamp);\n // time in seconds\n frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;\n frame.ptsTime = frame.dts / ONE_SECOND_IN_TS;\n }\n }\n};\n\n/**\n * inspects the aac data stream for start and end time information\n */\nvar inspectAac_ = function(bytes) {\n var\n endLoop = false,\n audioCount = 0,\n sampleRate = null,\n timestamp = null,\n frameSize = 0,\n byteIndex = 0,\n packet;\n\n while (bytes.length - byteIndex >= 3) {\n var type = probe.aac.parseType(bytes, byteIndex);\n switch (type) {\n case 'timed-metadata':\n // Exit early because we don't have enough to parse\n // the ID3 tag header\n if (bytes.length - byteIndex < 10) {\n endLoop = true;\n break;\n }\n\n frameSize = probe.aac.parseId3TagSize(bytes, byteIndex);\n\n // Exit early if we don't have enough in the buffer\n // to emit a full packet\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n if (timestamp === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n timestamp = probe.aac.parseAacTimestamp(packet);\n }\n byteIndex += frameSize;\n break;\n case 'audio':\n // Exit early because we don't have enough to parse\n // the ADTS frame header\n if (bytes.length - byteIndex < 7) {\n endLoop = true;\n break;\n }\n\n frameSize = probe.aac.parseAdtsSize(bytes, byteIndex);\n\n // Exit early if we don't have enough in the buffer\n // to emit a full packet\n if (frameSize > bytes.length) {\n endLoop = true;\n break;\n }\n if (sampleRate === null) {\n packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n sampleRate = probe.aac.parseSampleRate(packet);\n }\n audioCount++;\n byteIndex += frameSize;\n break;\n default:\n byteIndex++;\n break;\n }\n if (endLoop) {\n return null;\n }\n }\n if (sampleRate === null || timestamp === null) {\n return null;\n }\n\n var audioTimescale = ONE_SECOND_IN_TS / sampleRate;\n\n var result = {\n audio: [\n {\n type: 'audio',\n dts: timestamp,\n pts: timestamp\n },\n {\n type: 'audio',\n dts: timestamp + (audioCount * 1024 * audioTimescale),\n pts: timestamp + (audioCount * 1024 * audioTimescale)\n }\n ]\n };\n\n return result;\n};\n\n/**\n * inspects the transport stream segment data for start and end time information\n * of the audio and video tracks (when present) as well as the first key frame's\n * start time.\n */\nvar inspectTs_ = function(bytes) {\n var pmt = {\n pid: null,\n table: null\n };\n\n var result = {};\n\n parsePsi_(bytes, pmt);\n\n for (var pid in pmt.table) {\n if (pmt.table.hasOwnProperty(pid)) {\n var type = pmt.table[pid];\n switch (type) {\n case StreamTypes.H264_STREAM_TYPE:\n result.video = [];\n parseVideoPes_(bytes, pmt, result);\n if (result.video.length === 0) {\n delete result.video;\n }\n break;\n case StreamTypes.ADTS_STREAM_TYPE:\n result.audio = [];\n parseAudioPes_(bytes, pmt, result);\n if (result.audio.length === 0) {\n delete result.audio;\n }\n break;\n default:\n break;\n }\n }\n }\n return result;\n};\n\n/**\n * Inspects segment byte data and returns an object with start and end timing information\n *\n * @param {Uint8Array} bytes The segment byte data\n * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n * timestamps for rollover. This value must be in 90khz clock.\n * @return {Object} Object containing start and end frame timing info of segment.\n */\nvar inspect = function(bytes, baseTimestamp) {\n var isAacData = probe.aac.isLikelyAacData(bytes);\n\n var result;\n\n if (isAacData) {\n result = inspectAac_(bytes);\n } else {\n result = inspectTs_(bytes);\n }\n\n if (!result || (!result.audio && !result.video)) {\n return null;\n }\n\n adjustTimestamp_(result, baseTimestamp);\n\n return result;\n};\n\nmodule.exports = {\n inspect: inspect,\n parseAudioPes_: parseAudioPes_\n};\n","/*\n * pkcs7.pad\n * https://github.com/brightcove/pkcs7\n *\n * Copyright (c) 2014 Brightcove\n * Licensed under the apache2 license.\n */\n\nvar PADDING = void 0;\n\n/**\n * Returns a new Uint8Array that is padded with PKCS#7 padding.\n * @param plaintext {Uint8Array} the input bytes before encryption\n * @return {Uint8Array} the padded bytes\n * @see http://tools.ietf.org/html/rfc5652\n */\nfunction pad(plaintext) {\n var padding = PADDING[plaintext.byteLength % 16 || 0];\n var result = new Uint8Array(plaintext.byteLength + padding.length);\n\n result.set(plaintext);\n result.set(padding, plaintext.byteLength);\n\n return result;\n}\n\n// pre-define the padding values\nPADDING = [[16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16], [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15], [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14], [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13], [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12], [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11], [10, 10, 10, 10, 10, 10, 10, 10, 10, 10], [9, 9, 9, 9, 9, 9, 9, 9, 9], [8, 8, 8, 8, 8, 8, 8, 8], [7, 7, 7, 7, 7, 7, 7], [6, 6, 6, 6, 6, 6], [5, 5, 5, 5, 5], [4, 4, 4, 4], [3, 3, 3], [2, 2], [1]];\n\n/**\n * Returns the subarray of a Uint8Array without PKCS#7 padding.\n * @param padded {Uint8Array} unencrypted bytes that have been padded\n * @return {Uint8Array} the unpadded bytes\n * @see http://tools.ietf.org/html/rfc5652\n */\nfunction unpad(padded) {\n return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n}\n\nvar version = \"1.0.2\";\n\nexport { pad, unpad, version as VERSION };\n","import { unpad } from 'pkcs7';\n\nvar classCallCheck = function (instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n};\n\nvar createClass = function () {\n function defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n return function (Constructor, protoProps, staticProps) {\n if (protoProps) defineProperties(Constructor.prototype, protoProps);\n if (staticProps) defineProperties(Constructor, staticProps);\n return Constructor;\n };\n}();\n\n\n\n\n\n\n\n\n\nvar inherits = function (subClass, superClass) {\n if (typeof superClass !== \"function\" && superClass !== null) {\n throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n }\n\n subClass.prototype = Object.create(superClass && superClass.prototype, {\n constructor: {\n value: subClass,\n enumerable: false,\n writable: true,\n configurable: true\n }\n });\n if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n};\n\n\n\n\n\n\n\n\n\n\n\nvar possibleConstructorReturn = function (self, call) {\n if (!self) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n\n return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n};\n\n/**\n * @file aes.js\n *\n * This file contains an adaptation of the AES decryption algorithm\n * from the Standford Javascript Cryptography Library. That work is\n * covered by the following copyright and permissions notice:\n *\n * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n * All rights reserved.\n *\n * Redistribution and use in source and binary forms, with or without\n * modification, are permitted provided that the following conditions are\n * met:\n *\n * 1. Redistributions of source code must retain the above copyright\n * notice, this list of conditions and the following disclaimer.\n *\n * 2. Redistributions in binary form must reproduce the above\n * copyright notice, this list of conditions and the following\n * disclaimer in the documentation and/or other materials provided\n * with the distribution.\n *\n * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL OR CONTRIBUTORS BE\n * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *\n * The views and conclusions contained in the software and documentation\n * are those of the authors and should not be interpreted as representing\n * official policies, either expressed or implied, of the authors.\n */\n\n/**\n * Expand the S-box tables.\n *\n * @private\n */\nvar precompute = function precompute() {\n var tables = [[[], [], [], [], []], [[], [], [], [], []]];\n var encTable = tables[0];\n var decTable = tables[1];\n var sbox = encTable[4];\n var sboxInv = decTable[4];\n var i = void 0;\n var x = void 0;\n var xInv = void 0;\n var d = [];\n var th = [];\n var x2 = void 0;\n var x4 = void 0;\n var x8 = void 0;\n var s = void 0;\n var tEnc = void 0;\n var tDec = void 0;\n\n // Compute double and third tables\n for (i = 0; i < 256; i++) {\n th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n }\n\n for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n // Compute sbox\n s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n s = s >> 8 ^ s & 255 ^ 99;\n sbox[x] = s;\n sboxInv[s] = x;\n\n // Compute MixColumns\n x8 = d[x4 = d[x2 = d[x]]];\n tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n tEnc = d[s] * 0x101 ^ s * 0x1010100;\n\n for (i = 0; i < 4; i++) {\n encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n }\n }\n\n // Compactify. Considerable speedup on Firefox.\n for (i = 0; i < 5; i++) {\n encTable[i] = encTable[i].slice(0);\n decTable[i] = decTable[i].slice(0);\n }\n return tables;\n};\nvar aesTables = null;\n\n/**\n * Schedule out an AES key for both encryption and decryption. This\n * is a low-level class. Use a cipher mode to do bulk encryption.\n *\n * @class AES\n * @param key {Array} The key as an array of 4, 6 or 8 words.\n */\n\nvar AES = function () {\n function AES(key) {\n classCallCheck(this, AES);\n\n /**\n * The expanded S-box and inverse S-box tables. These will be computed\n * on the client so that we don't have to send them down the wire.\n *\n * There are two tables, _tables[0] is for encryption and\n * _tables[1] is for decryption.\n *\n * The first 4 sub-tables are the expanded S-box with MixColumns. The\n * last (_tables[01][4]) is the S-box itself.\n *\n * @private\n */\n // if we have yet to precompute the S-box tables\n // do so now\n if (!aesTables) {\n aesTables = precompute();\n }\n // then make a copy of that object for use\n this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n var i = void 0;\n var j = void 0;\n var tmp = void 0;\n var encKey = void 0;\n var decKey = void 0;\n var sbox = this._tables[0][4];\n var decTable = this._tables[1];\n var keyLen = key.length;\n var rcon = 1;\n\n if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n throw new Error('Invalid aes key size');\n }\n\n encKey = key.slice(0);\n decKey = [];\n this._key = [encKey, decKey];\n\n // schedule encryption keys\n for (i = keyLen; i < 4 * keyLen + 28; i++) {\n tmp = encKey[i - 1];\n\n // apply sbox\n if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255];\n\n // shift rows and add rcon\n if (i % keyLen === 0) {\n tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n rcon = rcon << 1 ^ (rcon >> 7) * 283;\n }\n }\n\n encKey[i] = encKey[i - keyLen] ^ tmp;\n }\n\n // schedule decryption keys\n for (j = 0; i; j++, i--) {\n tmp = encKey[j & 3 ? i : i - 4];\n if (i <= 4 || j < 4) {\n decKey[j] = tmp;\n } else {\n decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n }\n }\n }\n\n /**\n * Decrypt 16 bytes, specified as four 32-bit words.\n *\n * @param {Number} encrypted0 the first word to decrypt\n * @param {Number} encrypted1 the second word to decrypt\n * @param {Number} encrypted2 the third word to decrypt\n * @param {Number} encrypted3 the fourth word to decrypt\n * @param {Int32Array} out the array to write the decrypted words\n * into\n * @param {Number} offset the offset into the output array to start\n * writing results\n * @return {Array} The plaintext.\n */\n\n\n AES.prototype.decrypt = function decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n var key = this._key[1];\n // state variables a,b,c,d are loaded with pre-whitened data\n var a = encrypted0 ^ key[0];\n var b = encrypted3 ^ key[1];\n var c = encrypted2 ^ key[2];\n var d = encrypted1 ^ key[3];\n var a2 = void 0;\n var b2 = void 0;\n var c2 = void 0;\n\n // key.length === 2 ?\n var nInnerRounds = key.length / 4 - 2;\n var i = void 0;\n var kIndex = 4;\n var table = this._tables[1];\n\n // load up the tables\n var table0 = table[0];\n var table1 = table[1];\n var table2 = table[2];\n var table3 = table[3];\n var sbox = table[4];\n\n // Inner rounds. Cribbed from OpenSSL.\n for (i = 0; i < nInnerRounds; i++) {\n a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n kIndex += 4;\n a = a2;b = b2;c = c2;\n }\n\n // Last round.\n for (i = 0; i < 4; i++) {\n out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n a2 = a;a = b;b = c;c = d;d = a2;\n }\n };\n\n return AES;\n}();\n\n/**\n * @file stream.js\n */\n/**\n * A lightweight readable stream implemention that handles event dispatching.\n *\n * @class Stream\n */\nvar Stream = function () {\n function Stream() {\n classCallCheck(this, Stream);\n\n this.listeners = {};\n }\n\n /**\n * Add a listener for a specified event type.\n *\n * @param {String} type the event name\n * @param {Function} listener the callback to be invoked when an event of\n * the specified type occurs\n */\n\n\n Stream.prototype.on = function on(type, listener) {\n if (!this.listeners[type]) {\n this.listeners[type] = [];\n }\n this.listeners[type].push(listener);\n };\n\n /**\n * Remove a listener for a specified event type.\n *\n * @param {String} type the event name\n * @param {Function} listener a function previously registered for this\n * type of event through `on`\n * @return {Boolean} if we could turn it off or not\n */\n\n\n Stream.prototype.off = function off(type, listener) {\n if (!this.listeners[type]) {\n return false;\n }\n\n var index = this.listeners[type].indexOf(listener);\n\n this.listeners[type].splice(index, 1);\n return index > -1;\n };\n\n /**\n * Trigger an event of the specified type on this stream. Any additional\n * arguments to this function are passed as parameters to event listeners.\n *\n * @param {String} type the event name\n */\n\n\n Stream.prototype.trigger = function trigger(type) {\n var callbacks = this.listeners[type];\n\n if (!callbacks) {\n return;\n }\n\n // Slicing the arguments on every invocation of this method\n // can add a significant amount of overhead. Avoid the\n // intermediate object creation for the common case of a\n // single callback argument\n if (arguments.length === 2) {\n var length = callbacks.length;\n\n for (var i = 0; i < length; ++i) {\n callbacks[i].call(this, arguments[1]);\n }\n } else {\n var args = Array.prototype.slice.call(arguments, 1);\n var _length = callbacks.length;\n\n for (var _i = 0; _i < _length; ++_i) {\n callbacks[_i].apply(this, args);\n }\n }\n };\n\n /**\n * Destroys the stream and cleans up.\n */\n\n\n Stream.prototype.dispose = function dispose() {\n this.listeners = {};\n };\n /**\n * Forwards all `data` events on this stream to the destination stream. The\n * destination stream should provide a method `push` to receive the data\n * events as they arrive.\n *\n * @param {Stream} destination the stream that will receive all `data` events\n * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n */\n\n\n Stream.prototype.pipe = function pipe(destination) {\n this.on('data', function (data) {\n destination.push(data);\n });\n };\n\n return Stream;\n}();\n\n/**\n * @file async-stream.js\n */\n/**\n * A wrapper around the Stream class to use setTiemout\n * and run stream \"jobs\" Asynchronously\n *\n * @class AsyncStream\n * @extends Stream\n */\n\nvar AsyncStream = function (_Stream) {\n inherits(AsyncStream, _Stream);\n\n function AsyncStream() {\n classCallCheck(this, AsyncStream);\n\n var _this = possibleConstructorReturn(this, _Stream.call(this, Stream));\n\n _this.jobs = [];\n _this.delay = 1;\n _this.timeout_ = null;\n return _this;\n }\n\n /**\n * process an async job\n *\n * @private\n */\n\n\n AsyncStream.prototype.processJob_ = function processJob_() {\n this.jobs.shift()();\n if (this.jobs.length) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n } else {\n this.timeout_ = null;\n }\n };\n\n /**\n * push a job into the stream\n *\n * @param {Function} job the job to push into the stream\n */\n\n\n AsyncStream.prototype.push = function push(job) {\n this.jobs.push(job);\n if (!this.timeout_) {\n this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n }\n };\n\n return AsyncStream;\n}(Stream);\n\n/**\n * @file decrypter.js\n *\n * An asynchronous implementation of AES-128 CBC decryption with\n * PKCS#7 padding.\n */\n\n/**\n * Convert network-order (big-endian) bytes into their little-endian\n * representation.\n */\nvar ntoh = function ntoh(word) {\n return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n};\n\n/**\n * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * use for the first round of CBC.\n * @return {Uint8Array} the decrypted bytes\n *\n * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n * @see https://tools.ietf.org/html/rfc2315\n */\nvar decrypt = function decrypt(encrypted, key, initVector) {\n // word-level access to the encrypted bytes\n var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n\n var decipher = new AES(Array.prototype.slice.call(key));\n\n // byte and word-level access for the decrypted output\n var decrypted = new Uint8Array(encrypted.byteLength);\n var decrypted32 = new Int32Array(decrypted.buffer);\n\n // temporary variables for working with the IV, encrypted, and\n // decrypted data\n var init0 = void 0;\n var init1 = void 0;\n var init2 = void 0;\n var init3 = void 0;\n var encrypted0 = void 0;\n var encrypted1 = void 0;\n var encrypted2 = void 0;\n var encrypted3 = void 0;\n\n // iteration variable\n var wordIx = void 0;\n\n // pull out the words of the IV to ensure we don't modify the\n // passed-in reference and easier access\n init0 = initVector[0];\n init1 = initVector[1];\n init2 = initVector[2];\n init3 = initVector[3];\n\n // decrypt four word sequences, applying cipher-block chaining (CBC)\n // to each decrypted block\n for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n // convert big-endian (network order) words into little-endian\n // (javascript order)\n encrypted0 = ntoh(encrypted32[wordIx]);\n encrypted1 = ntoh(encrypted32[wordIx + 1]);\n encrypted2 = ntoh(encrypted32[wordIx + 2]);\n encrypted3 = ntoh(encrypted32[wordIx + 3]);\n\n // decrypt the block\n decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx);\n\n // XOR with the IV, and restore network byte-order to obtain the\n // plaintext\n decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3);\n\n // setup the IV for the next round\n init0 = encrypted0;\n init1 = encrypted1;\n init2 = encrypted2;\n init3 = encrypted3;\n }\n\n return decrypted;\n};\n\n/**\n * The `Decrypter` class that manages decryption of AES\n * data through `AsyncStream` objects and the `decrypt`\n * function\n *\n * @param {Uint8Array} encrypted the encrypted bytes\n * @param {Uint32Array} key the bytes of the decryption key\n * @param {Uint32Array} initVector the initialization vector (IV) to\n * @param {Function} done the function to run when done\n * @class Decrypter\n */\n\nvar Decrypter = function () {\n function Decrypter(encrypted, key, initVector, done) {\n classCallCheck(this, Decrypter);\n\n var step = Decrypter.STEP;\n var encrypted32 = new Int32Array(encrypted.buffer);\n var decrypted = new Uint8Array(encrypted.byteLength);\n var i = 0;\n\n this.asyncStream_ = new AsyncStream();\n\n // split up the encryption job and do the individual chunks asynchronously\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n for (i = step; i < encrypted32.length; i += step) {\n initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n }\n // invoke the done() callback when everything is finished\n this.asyncStream_.push(function () {\n // remove pkcs#7 padding from the decrypted bytes\n done(null, unpad(decrypted));\n });\n }\n\n /**\n * a getter for step the maximum number of bytes to process at one time\n *\n * @return {Number} the value of step 32000\n */\n\n\n /**\n * @private\n */\n Decrypter.prototype.decryptChunk_ = function decryptChunk_(encrypted, key, initVector, decrypted) {\n return function () {\n var bytes = decrypt(encrypted, key, initVector);\n\n decrypted.set(bytes, encrypted.byteOffset);\n };\n };\n\n createClass(Decrypter, null, [{\n key: 'STEP',\n get: function get$$1() {\n // 4 * 8000;\n return 32000;\n }\n }]);\n return Decrypter;\n}();\n\n/**\n * @file index.js\n *\n * Index module to easily import the primary components of AES-128\n * decryption. Like this:\n *\n * ```js\n * import {Decrypter, decrypt, AsyncStream} from 'aes-decrypter';\n * ```\n */\n\nexport { decrypt, Decrypter, AsyncStream };\n","/**\n * @license\n * Video.js 7.8.2 \n * Copyright Brightcove, Inc. \n * Available under Apache License Version 2.0\n * \n *\n * Includes vtt.js \n * Available under Apache License Version 2.0\n * \n */\n\nimport window$1 from 'global/window';\nimport document from 'global/document';\nimport _extends from '@babel/runtime/helpers/extends';\nimport _assertThisInitialized from '@babel/runtime/helpers/assertThisInitialized';\nimport '@babel/runtime/helpers/possibleConstructorReturn';\nimport '@babel/runtime/helpers/getPrototypeOf';\nimport _inheritsLoose from '@babel/runtime/helpers/inheritsLoose';\nimport safeParseTuple from 'safe-json-parse/tuple';\nimport keycode from 'keycode';\nimport XHR from '@videojs/xhr';\nimport vtt from 'videojs-vtt.js';\nimport _construct from '@babel/runtime/helpers/construct';\nimport _inherits from '@babel/runtime/helpers/inherits';\nimport URLToolkit from 'url-toolkit';\nimport { Parser } from 'm3u8-parser';\nimport { parse, parseUTCTiming } from 'mpd-parser';\nimport mp4Inspector from 'mux.js/lib/tools/mp4-inspector';\nimport mp4probe from 'mux.js/lib/mp4/probe';\nimport CaptionParser from 'mux.js/lib/mp4/caption-parser';\nimport tsInspector from 'mux.js/lib/tools/ts-inspector.js';\nimport { Decrypter, AsyncStream, decrypt } from 'aes-decrypter';\n\nvar version = \"7.8.2\";\n\n/**\n * @file create-logger.js\n * @module create-logger\n */\n\nvar history = [];\n/**\n * Log messages to the console and history based on the type of message\n *\n * @private\n * @param {string} type\n * The name of the console method to use.\n *\n * @param {Array} args\n * The arguments to be passed to the matching console method.\n */\n\nvar LogByTypeFactory = function LogByTypeFactory(name, log) {\n return function (type, level, args) {\n var lvl = log.levels[level];\n var lvlRegExp = new RegExp(\"^(\" + lvl + \")$\");\n\n if (type !== 'log') {\n // Add the type to the front of the message when it's not \"log\".\n args.unshift(type.toUpperCase() + ':');\n } // Add console prefix after adding to history.\n\n\n args.unshift(name + ':'); // Add a clone of the args at this point to history.\n\n if (history) {\n history.push([].concat(args)); // only store 1000 history entries\n\n var splice = history.length - 1000;\n history.splice(0, splice > 0 ? splice : 0);\n } // If there's no console then don't try to output messages, but they will\n // still be stored in history.\n\n\n if (!window$1.console) {\n return;\n } // Was setting these once outside of this function, but containing them\n // in the function makes it easier to test cases where console doesn't exist\n // when the module is executed.\n\n\n var fn = window$1.console[type];\n\n if (!fn && type === 'debug') {\n // Certain browsers don't have support for console.debug. For those, we\n // should default to the closest comparable log.\n fn = window$1.console.info || window$1.console.log;\n } // Bail out if there's no console or if this type is not allowed by the\n // current logging level.\n\n\n if (!fn || !lvl || !lvlRegExp.test(type)) {\n return;\n }\n\n fn[Array.isArray(args) ? 'apply' : 'call'](window$1.console, args);\n };\n};\n\nfunction createLogger(name) {\n // This is the private tracking variable for logging level.\n var level = 'info'; // the curried logByType bound to the specific log and history\n\n var logByType;\n /**\n * Logs plain debug messages. Similar to `console.log`.\n *\n * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n * of our JSDoc template, we cannot properly document this as both a function\n * and a namespace, so its function signature is documented here.\n *\n * #### Arguments\n * ##### *args\n * Mixed[]\n *\n * Any combination of values that could be passed to `console.log()`.\n *\n * #### Return Value\n *\n * `undefined`\n *\n * @namespace\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged.\n */\n\n var log = function log() {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n logByType('log', level, args);\n }; // This is the logByType helper that the logging methods below use\n\n\n logByType = LogByTypeFactory(name, log);\n /**\n * Create a new sublogger which chains the old name to the new name.\n *\n * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:\n * ```js\n * mylogger('foo');\n * // > VIDEOJS: player: foo\n * ```\n *\n * @param {string} name\n * The name to add call the new logger\n * @return {Object}\n */\n\n log.createLogger = function (subname) {\n return createLogger(name + ': ' + subname);\n };\n /**\n * Enumeration of available logging levels, where the keys are the level names\n * and the values are `|`-separated strings containing logging methods allowed\n * in that logging level. These strings are used to create a regular expression\n * matching the function name being called.\n *\n * Levels provided by Video.js are:\n *\n * - `off`: Matches no calls. Any value that can be cast to `false` will have\n * this effect. The most restrictive.\n * - `all`: Matches only Video.js-provided functions (`debug`, `log`,\n * `log.warn`, and `log.error`).\n * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.\n * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.\n * - `warn`: Matches `log.warn` and `log.error` calls.\n * - `error`: Matches only `log.error` calls.\n *\n * @type {Object}\n */\n\n\n log.levels = {\n all: 'debug|log|warn|error',\n off: '',\n debug: 'debug|log|warn|error',\n info: 'log|warn|error',\n warn: 'warn|error',\n error: 'error',\n DEFAULT: level\n };\n /**\n * Get or set the current logging level.\n *\n * If a string matching a key from {@link module:log.levels} is provided, acts\n * as a setter.\n *\n * @param {string} [lvl]\n * Pass a valid level to set a new logging level.\n *\n * @return {string}\n * The current logging level.\n */\n\n log.level = function (lvl) {\n if (typeof lvl === 'string') {\n if (!log.levels.hasOwnProperty(lvl)) {\n throw new Error(\"\\\"\" + lvl + \"\\\" in not a valid log level\");\n }\n\n level = lvl;\n }\n\n return level;\n };\n /**\n * Returns an array containing everything that has been logged to the history.\n *\n * This array is a shallow clone of the internal history record. However, its\n * contents are _not_ cloned; so, mutating objects inside this array will\n * mutate them in history.\n *\n * @return {Array}\n */\n\n\n log.history = function () {\n return history ? [].concat(history) : [];\n };\n /**\n * Allows you to filter the history by the given logger name\n *\n * @param {string} fname\n * The name to filter by\n *\n * @return {Array}\n * The filtered list to return\n */\n\n\n log.history.filter = function (fname) {\n return (history || []).filter(function (historyItem) {\n // if the first item in each historyItem includes `fname`, then it's a match\n return new RegExp(\".*\" + fname + \".*\").test(historyItem[0]);\n });\n };\n /**\n * Clears the internal history tracking, but does not prevent further history\n * tracking.\n */\n\n\n log.history.clear = function () {\n if (history) {\n history.length = 0;\n }\n };\n /**\n * Disable history tracking if it is currently enabled.\n */\n\n\n log.history.disable = function () {\n if (history !== null) {\n history.length = 0;\n history = null;\n }\n };\n /**\n * Enable history tracking if it is currently disabled.\n */\n\n\n log.history.enable = function () {\n if (history === null) {\n history = [];\n }\n };\n /**\n * Logs error messages. Similar to `console.error`.\n *\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged as an error\n */\n\n\n log.error = function () {\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n return logByType('error', level, args);\n };\n /**\n * Logs warning messages. Similar to `console.warn`.\n *\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged as a warning.\n */\n\n\n log.warn = function () {\n for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n args[_key3] = arguments[_key3];\n }\n\n return logByType('warn', level, args);\n };\n /**\n * Logs debug messages. Similar to `console.debug`, but may also act as a comparable\n * log if `console.debug` is not available\n *\n * @param {Mixed[]} args\n * One or more messages or objects that should be logged as debug.\n */\n\n\n log.debug = function () {\n for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n args[_key4] = arguments[_key4];\n }\n\n return logByType('debug', level, args);\n };\n\n return log;\n}\n\n/**\n * @file log.js\n * @module log\n */\nvar log = createLogger('VIDEOJS');\nvar createLogger$1 = log.createLogger;\n\n/**\n * @file obj.js\n * @module obj\n */\n\n/**\n * @callback obj:EachCallback\n *\n * @param {Mixed} value\n * The current key for the object that is being iterated over.\n *\n * @param {string} key\n * The current key-value for object that is being iterated over\n */\n\n/**\n * @callback obj:ReduceCallback\n *\n * @param {Mixed} accum\n * The value that is accumulating over the reduce loop.\n *\n * @param {Mixed} value\n * The current key for the object that is being iterated over.\n *\n * @param {string} key\n * The current key-value for object that is being iterated over\n *\n * @return {Mixed}\n * The new accumulated value.\n */\nvar toString = Object.prototype.toString;\n/**\n * Get the keys of an Object\n *\n * @param {Object}\n * The Object to get the keys from\n *\n * @return {string[]}\n * An array of the keys from the object. Returns an empty array if the\n * object passed in was invalid or had no keys.\n *\n * @private\n */\n\nvar keys = function keys(object) {\n return isObject(object) ? Object.keys(object) : [];\n};\n/**\n * Array-like iteration for objects.\n *\n * @param {Object} object\n * The object to iterate over\n *\n * @param {obj:EachCallback} fn\n * The callback function which is called for each key in the object.\n */\n\n\nfunction each(object, fn) {\n keys(object).forEach(function (key) {\n return fn(object[key], key);\n });\n}\n/**\n * Array-like reduce for objects.\n *\n * @param {Object} object\n * The Object that you want to reduce.\n *\n * @param {Function} fn\n * A callback function which is called for each key in the object. It\n * receives the accumulated value and the per-iteration value and key\n * as arguments.\n *\n * @param {Mixed} [initial = 0]\n * Starting value\n *\n * @return {Mixed}\n * The final accumulated value.\n */\n\nfunction reduce(object, fn, initial) {\n if (initial === void 0) {\n initial = 0;\n }\n\n return keys(object).reduce(function (accum, key) {\n return fn(accum, object[key], key);\n }, initial);\n}\n/**\n * Object.assign-style object shallow merge/extend.\n *\n * @param {Object} target\n * @param {Object} ...sources\n * @return {Object}\n */\n\nfunction assign(target) {\n for (var _len = arguments.length, sources = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n sources[_key - 1] = arguments[_key];\n }\n\n if (Object.assign) {\n return _extends.apply(void 0, [target].concat(sources));\n }\n\n sources.forEach(function (source) {\n if (!source) {\n return;\n }\n\n each(source, function (value, key) {\n target[key] = value;\n });\n });\n return target;\n}\n/**\n * Returns whether a value is an object of any kind - including DOM nodes,\n * arrays, regular expressions, etc. Not functions, though.\n *\n * This avoids the gotcha where using `typeof` on a `null` value\n * results in `'object'`.\n *\n * @param {Object} value\n * @return {boolean}\n */\n\nfunction isObject(value) {\n return !!value && typeof value === 'object';\n}\n/**\n * Returns whether an object appears to be a \"plain\" object - that is, a\n * direct instance of `Object`.\n *\n * @param {Object} value\n * @return {boolean}\n */\n\nfunction isPlain(value) {\n return isObject(value) && toString.call(value) === '[object Object]' && value.constructor === Object;\n}\n\n/**\n * @file computed-style.js\n * @module computed-style\n */\n/**\n * A safe getComputedStyle.\n *\n * This is needed because in Firefox, if the player is loaded in an iframe with\n * `display:none`, then `getComputedStyle` returns `null`, so, we do a\n * null-check to make sure that the player doesn't break in these cases.\n *\n * @function\n * @param {Element} el\n * The element you want the computed style of\n *\n * @param {string} prop\n * The property name you want\n *\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n */\n\nfunction computedStyle(el, prop) {\n if (!el || !prop) {\n return '';\n }\n\n if (typeof window$1.getComputedStyle === 'function') {\n var computedStyleValue = window$1.getComputedStyle(el);\n return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';\n }\n\n return '';\n}\n\n/**\n * @file dom.js\n * @module dom\n */\n/**\n * Detect if a value is a string with any non-whitespace characters.\n *\n * @private\n * @param {string} str\n * The string to check\n *\n * @return {boolean}\n * Will be `true` if the string is non-blank, `false` otherwise.\n *\n */\n\nfunction isNonBlankString(str) {\n // we use str.trim as it will trim any whitespace characters\n // from the front or back of non-whitespace characters. aka\n // Any string that contains non-whitespace characters will\n // still contain them after `trim` but whitespace only strings\n // will have a length of 0, failing this check.\n return typeof str === 'string' && Boolean(str.trim());\n}\n/**\n * Throws an error if the passed string has whitespace. This is used by\n * class methods to be relatively consistent with the classList API.\n *\n * @private\n * @param {string} str\n * The string to check for whitespace.\n *\n * @throws {Error}\n * Throws an error if there is whitespace in the string.\n */\n\n\nfunction throwIfWhitespace(str) {\n // str.indexOf instead of regex because str.indexOf is faster performance wise.\n if (str.indexOf(' ') >= 0) {\n throw new Error('class has illegal whitespace characters');\n }\n}\n/**\n * Produce a regular expression for matching a className within an elements className.\n *\n * @private\n * @param {string} className\n * The className to generate the RegExp for.\n *\n * @return {RegExp}\n * The RegExp that will check for a specific `className` in an elements\n * className.\n */\n\n\nfunction classRegExp(className) {\n return new RegExp('(^|\\\\s)' + className + '($|\\\\s)');\n}\n/**\n * Whether the current DOM interface appears to be real (i.e. not simulated).\n *\n * @return {boolean}\n * Will be `true` if the DOM appears to be real, `false` otherwise.\n */\n\n\nfunction isReal() {\n // Both document and window will never be undefined thanks to `global`.\n return document === window$1.document;\n}\n/**\n * Determines, via duck typing, whether or not a value is a DOM element.\n *\n * @param {Mixed} value\n * The value to check.\n *\n * @return {boolean}\n * Will be `true` if the value is a DOM element, `false` otherwise.\n */\n\nfunction isEl(value) {\n return isObject(value) && value.nodeType === 1;\n}\n/**\n * Determines if the current DOM is embedded in an iframe.\n *\n * @return {boolean}\n * Will be `true` if the DOM is embedded in an iframe, `false`\n * otherwise.\n */\n\nfunction isInFrame() {\n // We need a try/catch here because Safari will throw errors when attempting\n // to get either `parent` or `self`\n try {\n return window$1.parent !== window$1.self;\n } catch (x) {\n return true;\n }\n}\n/**\n * Creates functions to query the DOM using a given method.\n *\n * @private\n * @param {string} method\n * The method to create the query with.\n *\n * @return {Function}\n * The query method\n */\n\nfunction createQuerier(method) {\n return function (selector, context) {\n if (!isNonBlankString(selector)) {\n return document[method](null);\n }\n\n if (isNonBlankString(context)) {\n context = document.querySelector(context);\n }\n\n var ctx = isEl(context) ? context : document;\n return ctx[method] && ctx[method](selector);\n };\n}\n/**\n * Creates an element and applies properties, attributes, and inserts content.\n *\n * @param {string} [tagName='div']\n * Name of tag to be created.\n *\n * @param {Object} [properties={}]\n * Element properties to be applied.\n *\n * @param {Object} [attributes={}]\n * Element attributes to be applied.\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor object.\n *\n * @return {Element}\n * The element that was created.\n */\n\n\nfunction createEl(tagName, properties, attributes, content) {\n if (tagName === void 0) {\n tagName = 'div';\n }\n\n if (properties === void 0) {\n properties = {};\n }\n\n if (attributes === void 0) {\n attributes = {};\n }\n\n var el = document.createElement(tagName);\n Object.getOwnPropertyNames(properties).forEach(function (propName) {\n var val = properties[propName]; // See #2176\n // We originally were accepting both properties and attributes in the\n // same object, but that doesn't work so well.\n\n if (propName.indexOf('aria-') !== -1 || propName === 'role' || propName === 'type') {\n log.warn('Setting attributes in the second argument of createEl()\\n' + 'has been deprecated. Use the third argument instead.\\n' + (\"createEl(type, properties, attributes). Attempting to set \" + propName + \" to \" + val + \".\"));\n el.setAttribute(propName, val); // Handle textContent since it's not supported everywhere and we have a\n // method for it.\n } else if (propName === 'textContent') {\n textContent(el, val);\n } else if (el[propName] !== val) {\n el[propName] = val;\n }\n });\n Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n el.setAttribute(attrName, attributes[attrName]);\n });\n\n if (content) {\n appendContent(el, content);\n }\n\n return el;\n}\n/**\n * Injects text into an element, replacing any existing contents entirely.\n *\n * @param {Element} el\n * The element to add text content into\n *\n * @param {string} text\n * The text content to add.\n *\n * @return {Element}\n * The element with added text content.\n */\n\nfunction textContent(el, text) {\n if (typeof el.textContent === 'undefined') {\n el.innerText = text;\n } else {\n el.textContent = text;\n }\n\n return el;\n}\n/**\n * Insert an element as the first child node of another\n *\n * @param {Element} child\n * Element to insert\n *\n * @param {Element} parent\n * Element to insert child into\n */\n\nfunction prependTo(child, parent) {\n if (parent.firstChild) {\n parent.insertBefore(child, parent.firstChild);\n } else {\n parent.appendChild(child);\n }\n}\n/**\n * Check if an element has a class name.\n *\n * @param {Element} element\n * Element to check\n *\n * @param {string} classToCheck\n * Class name to check for\n *\n * @return {boolean}\n * Will be `true` if the element has a class, `false` otherwise.\n *\n * @throws {Error}\n * Throws an error if `classToCheck` has white space.\n */\n\nfunction hasClass(element, classToCheck) {\n throwIfWhitespace(classToCheck);\n\n if (element.classList) {\n return element.classList.contains(classToCheck);\n }\n\n return classRegExp(classToCheck).test(element.className);\n}\n/**\n * Add a class name to an element.\n *\n * @param {Element} element\n * Element to add class name to.\n *\n * @param {string} classToAdd\n * Class name to add.\n *\n * @return {Element}\n * The DOM element with the added class name.\n */\n\nfunction addClass(element, classToAdd) {\n if (element.classList) {\n element.classList.add(classToAdd); // Don't need to `throwIfWhitespace` here because `hasElClass` will do it\n // in the case of classList not being supported.\n } else if (!hasClass(element, classToAdd)) {\n element.className = (element.className + ' ' + classToAdd).trim();\n }\n\n return element;\n}\n/**\n * Remove a class name from an element.\n *\n * @param {Element} element\n * Element to remove a class name from.\n *\n * @param {string} classToRemove\n * Class name to remove\n *\n * @return {Element}\n * The DOM element with class name removed.\n */\n\nfunction removeClass(element, classToRemove) {\n if (element.classList) {\n element.classList.remove(classToRemove);\n } else {\n throwIfWhitespace(classToRemove);\n element.className = element.className.split(/\\s+/).filter(function (c) {\n return c !== classToRemove;\n }).join(' ');\n }\n\n return element;\n}\n/**\n * The callback definition for toggleClass.\n *\n * @callback module:dom~PredicateCallback\n * @param {Element} element\n * The DOM element of the Component.\n *\n * @param {string} classToToggle\n * The `className` that wants to be toggled\n *\n * @return {boolean|undefined}\n * If `true` is returned, the `classToToggle` will be added to the\n * `element`. If `false`, the `classToToggle` will be removed from\n * the `element`. If `undefined`, the callback will be ignored.\n */\n\n/**\n * Adds or removes a class name to/from an element depending on an optional\n * condition or the presence/absence of the class name.\n *\n * @param {Element} element\n * The element to toggle a class name on.\n *\n * @param {string} classToToggle\n * The class that should be toggled.\n *\n * @param {boolean|module:dom~PredicateCallback} [predicate]\n * See the return value for {@link module:dom~PredicateCallback}\n *\n * @return {Element}\n * The element with a class that has been toggled.\n */\n\nfunction toggleClass(element, classToToggle, predicate) {\n // This CANNOT use `classList` internally because IE11 does not support the\n // second parameter to the `classList.toggle()` method! Which is fine because\n // `classList` will be used by the add/remove functions.\n var has = hasClass(element, classToToggle);\n\n if (typeof predicate === 'function') {\n predicate = predicate(element, classToToggle);\n }\n\n if (typeof predicate !== 'boolean') {\n predicate = !has;\n } // If the necessary class operation matches the current state of the\n // element, no action is required.\n\n\n if (predicate === has) {\n return;\n }\n\n if (predicate) {\n addClass(element, classToToggle);\n } else {\n removeClass(element, classToToggle);\n }\n\n return element;\n}\n/**\n * Apply attributes to an HTML element.\n *\n * @param {Element} el\n * Element to add attributes to.\n *\n * @param {Object} [attributes]\n * Attributes to be applied.\n */\n\nfunction setAttributes(el, attributes) {\n Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n var attrValue = attributes[attrName];\n\n if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {\n el.removeAttribute(attrName);\n } else {\n el.setAttribute(attrName, attrValue === true ? '' : attrValue);\n }\n });\n}\n/**\n * Get an element's attribute values, as defined on the HTML tag.\n *\n * Attributes are not the same as properties. They're defined on the tag\n * or with setAttribute.\n *\n * @param {Element} tag\n * Element from which to get tag attributes.\n *\n * @return {Object}\n * All attributes of the element. Boolean attributes will be `true` or\n * `false`, others will be strings.\n */\n\nfunction getAttributes(tag) {\n var obj = {}; // known boolean attributes\n // we can check for matching boolean properties, but not all browsers\n // and not all tags know about these attributes, so, we still want to check them manually\n\n var knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ',';\n\n if (tag && tag.attributes && tag.attributes.length > 0) {\n var attrs = tag.attributes;\n\n for (var i = attrs.length - 1; i >= 0; i--) {\n var attrName = attrs[i].name;\n var attrVal = attrs[i].value; // check for known booleans\n // the matching element property will return a value for typeof\n\n if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) {\n // the value of an included boolean attribute is typically an empty\n // string ('') which would equal false if we just check for a false value.\n // we also don't want support bad code like autoplay='false'\n attrVal = attrVal !== null ? true : false;\n }\n\n obj[attrName] = attrVal;\n }\n }\n\n return obj;\n}\n/**\n * Get the value of an element's attribute.\n *\n * @param {Element} el\n * A DOM element.\n *\n * @param {string} attribute\n * Attribute to get the value of.\n *\n * @return {string}\n * The value of the attribute.\n */\n\nfunction getAttribute(el, attribute) {\n return el.getAttribute(attribute);\n}\n/**\n * Set the value of an element's attribute.\n *\n * @param {Element} el\n * A DOM element.\n *\n * @param {string} attribute\n * Attribute to set.\n *\n * @param {string} value\n * Value to set the attribute to.\n */\n\nfunction setAttribute(el, attribute, value) {\n el.setAttribute(attribute, value);\n}\n/**\n * Remove an element's attribute.\n *\n * @param {Element} el\n * A DOM element.\n *\n * @param {string} attribute\n * Attribute to remove.\n */\n\nfunction removeAttribute(el, attribute) {\n el.removeAttribute(attribute);\n}\n/**\n * Attempt to block the ability to select text.\n */\n\nfunction blockTextSelection() {\n document.body.focus();\n\n document.onselectstart = function () {\n return false;\n };\n}\n/**\n * Turn off text selection blocking.\n */\n\nfunction unblockTextSelection() {\n document.onselectstart = function () {\n return true;\n };\n}\n/**\n * Identical to the native `getBoundingClientRect` function, but ensures that\n * the method is supported at all (it is in all browsers we claim to support)\n * and that the element is in the DOM before continuing.\n *\n * This wrapper function also shims properties which are not provided by some\n * older browsers (namely, IE8).\n *\n * Additionally, some browsers do not support adding properties to a\n * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard\n * properties (except `x` and `y` which are not widely supported). This helps\n * avoid implementations where keys are non-enumerable.\n *\n * @param {Element} el\n * Element whose `ClientRect` we want to calculate.\n *\n * @return {Object|undefined}\n * Always returns a plain object - or `undefined` if it cannot.\n */\n\nfunction getBoundingClientRect(el) {\n if (el && el.getBoundingClientRect && el.parentNode) {\n var rect = el.getBoundingClientRect();\n var result = {};\n ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(function (k) {\n if (rect[k] !== undefined) {\n result[k] = rect[k];\n }\n });\n\n if (!result.height) {\n result.height = parseFloat(computedStyle(el, 'height'));\n }\n\n if (!result.width) {\n result.width = parseFloat(computedStyle(el, 'width'));\n }\n\n return result;\n }\n}\n/**\n * Represents the position of a DOM element on the page.\n *\n * @typedef {Object} module:dom~Position\n *\n * @property {number} left\n * Pixels to the left.\n *\n * @property {number} top\n * Pixels from the top.\n */\n\n/**\n * Get the position of an element in the DOM.\n *\n * Uses `getBoundingClientRect` technique from John Resig.\n *\n * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/\n *\n * @param {Element} el\n * Element from which to get offset.\n *\n * @return {module:dom~Position}\n * The position of the element that was passed in.\n */\n\nfunction findPosition(el) {\n var box;\n\n if (el.getBoundingClientRect && el.parentNode) {\n box = el.getBoundingClientRect();\n }\n\n if (!box) {\n return {\n left: 0,\n top: 0\n };\n }\n\n var docEl = document.documentElement;\n var body = document.body;\n var clientLeft = docEl.clientLeft || body.clientLeft || 0;\n var scrollLeft = window$1.pageXOffset || body.scrollLeft;\n var left = box.left + scrollLeft - clientLeft;\n var clientTop = docEl.clientTop || body.clientTop || 0;\n var scrollTop = window$1.pageYOffset || body.scrollTop;\n var top = box.top + scrollTop - clientTop; // Android sometimes returns slightly off decimal values, so need to round\n\n return {\n left: Math.round(left),\n top: Math.round(top)\n };\n}\n/**\n * Represents x and y coordinates for a DOM element or mouse pointer.\n *\n * @typedef {Object} module:dom~Coordinates\n *\n * @property {number} x\n * x coordinate in pixels\n *\n * @property {number} y\n * y coordinate in pixels\n */\n\n/**\n * Get the pointer position within an element.\n *\n * The base on the coordinates are the bottom left of the element.\n *\n * @param {Element} el\n * Element on which to get the pointer position on.\n *\n * @param {EventTarget~Event} event\n * Event object.\n *\n * @return {module:dom~Coordinates}\n * A coordinates object corresponding to the mouse position.\n *\n */\n\nfunction getPointerPosition(el, event) {\n var position = {};\n var box = findPosition(el);\n var boxW = el.offsetWidth;\n var boxH = el.offsetHeight;\n var boxY = box.top;\n var boxX = box.left;\n var pageY = event.pageY;\n var pageX = event.pageX;\n\n if (event.changedTouches) {\n pageX = event.changedTouches[0].pageX;\n pageY = event.changedTouches[0].pageY;\n }\n\n position.y = Math.max(0, Math.min(1, (boxY - pageY + boxH) / boxH));\n position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW));\n return position;\n}\n/**\n * Determines, via duck typing, whether or not a value is a text node.\n *\n * @param {Mixed} value\n * Check if this value is a text node.\n *\n * @return {boolean}\n * Will be `true` if the value is a text node, `false` otherwise.\n */\n\nfunction isTextNode(value) {\n return isObject(value) && value.nodeType === 3;\n}\n/**\n * Empties the contents of an element.\n *\n * @param {Element} el\n * The element to empty children from\n *\n * @return {Element}\n * The element with no children\n */\n\nfunction emptyEl(el) {\n while (el.firstChild) {\n el.removeChild(el.firstChild);\n }\n\n return el;\n}\n/**\n * This is a mixed value that describes content to be injected into the DOM\n * via some method. It can be of the following types:\n *\n * Type | Description\n * -----------|-------------\n * `string` | The value will be normalized into a text node.\n * `Element` | The value will be accepted as-is.\n * `TextNode` | The value will be accepted as-is.\n * `Array` | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).\n * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.\n *\n * @typedef {string|Element|TextNode|Array|Function} module:dom~ContentDescriptor\n */\n\n/**\n * Normalizes content for eventual insertion into the DOM.\n *\n * This allows a wide range of content definition methods, but helps protect\n * from falling into the trap of simply writing to `innerHTML`, which could\n * be an XSS concern.\n *\n * The content for an element can be passed in multiple types and\n * combinations, whose behavior is as follows:\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor value.\n *\n * @return {Array}\n * All of the content that was passed in, normalized to an array of\n * elements or text nodes.\n */\n\nfunction normalizeContent(content) {\n // First, invoke content if it is a function. If it produces an array,\n // that needs to happen before normalization.\n if (typeof content === 'function') {\n content = content();\n } // Next up, normalize to an array, so one or many items can be normalized,\n // filtered, and returned.\n\n\n return (Array.isArray(content) ? content : [content]).map(function (value) {\n // First, invoke value if it is a function to produce a new value,\n // which will be subsequently normalized to a Node of some kind.\n if (typeof value === 'function') {\n value = value();\n }\n\n if (isEl(value) || isTextNode(value)) {\n return value;\n }\n\n if (typeof value === 'string' && /\\S/.test(value)) {\n return document.createTextNode(value);\n }\n }).filter(function (value) {\n return value;\n });\n}\n/**\n * Normalizes and appends content to an element.\n *\n * @param {Element} el\n * Element to append normalized content to.\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor value.\n *\n * @return {Element}\n * The element with appended normalized content.\n */\n\nfunction appendContent(el, content) {\n normalizeContent(content).forEach(function (node) {\n return el.appendChild(node);\n });\n return el;\n}\n/**\n * Normalizes and inserts content into an element; this is identical to\n * `appendContent()`, except it empties the element first.\n *\n * @param {Element} el\n * Element to insert normalized content into.\n *\n * @param {module:dom~ContentDescriptor} content\n * A content descriptor value.\n *\n * @return {Element}\n * The element with inserted normalized content.\n */\n\nfunction insertContent(el, content) {\n return appendContent(emptyEl(el), content);\n}\n/**\n * Check if an event was a single left click.\n *\n * @param {EventTarget~Event} event\n * Event object.\n *\n * @return {boolean}\n * Will be `true` if a single left click, `false` otherwise.\n */\n\nfunction isSingleLeftClick(event) {\n // Note: if you create something draggable, be sure to\n // call it on both `mousedown` and `mousemove` event,\n // otherwise `mousedown` should be enough for a button\n if (event.button === undefined && event.buttons === undefined) {\n // Why do we need `buttons` ?\n // Because, middle mouse sometimes have this:\n // e.button === 0 and e.buttons === 4\n // Furthermore, we want to prevent combination click, something like\n // HOLD middlemouse then left click, that would be\n // e.button === 0, e.buttons === 5\n // just `button` is not gonna work\n // Alright, then what this block does ?\n // this is for chrome `simulate mobile devices`\n // I want to support this as well\n return true;\n }\n\n if (event.button === 0 && event.buttons === undefined) {\n // Touch screen, sometimes on some specific device, `buttons`\n // doesn't have anything (safari on ios, blackberry...)\n return true;\n } // `mouseup` event on a single left click has\n // `button` and `buttons` equal to 0\n\n\n if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {\n return true;\n }\n\n if (event.button !== 0 || event.buttons !== 1) {\n // This is the reason we have those if else block above\n // if any special case we can catch and let it slide\n // we do it above, when get to here, this definitely\n // is-not-left-click\n return false;\n }\n\n return true;\n}\n/**\n * Finds a single DOM element matching `selector` within the optional\n * `context` of another DOM element (defaulting to `document`).\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelector`.\n *\n * @param {Element|String} [context=document]\n * A DOM element within which to query. Can also be a selector\n * string in which case the first matching element will be used\n * as context. If missing (or no element matches selector), falls\n * back to `document`.\n *\n * @return {Element|null}\n * The element that was found or null.\n */\n\nvar $ = createQuerier('querySelector');\n/**\n * Finds a all DOM elements matching `selector` within the optional\n * `context` of another DOM element (defaulting to `document`).\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelectorAll`.\n *\n * @param {Element|String} [context=document]\n * A DOM element within which to query. Can also be a selector\n * string in which case the first matching element will be used\n * as context. If missing (or no element matches selector), falls\n * back to `document`.\n *\n * @return {NodeList}\n * A element list of elements that were found. Will be empty if none\n * were found.\n *\n */\n\nvar $$ = createQuerier('querySelectorAll');\n\nvar Dom = /*#__PURE__*/Object.freeze({\n __proto__: null,\n isReal: isReal,\n isEl: isEl,\n isInFrame: isInFrame,\n createEl: createEl,\n textContent: textContent,\n prependTo: prependTo,\n hasClass: hasClass,\n addClass: addClass,\n removeClass: removeClass,\n toggleClass: toggleClass,\n setAttributes: setAttributes,\n getAttributes: getAttributes,\n getAttribute: getAttribute,\n setAttribute: setAttribute,\n removeAttribute: removeAttribute,\n blockTextSelection: blockTextSelection,\n unblockTextSelection: unblockTextSelection,\n getBoundingClientRect: getBoundingClientRect,\n findPosition: findPosition,\n getPointerPosition: getPointerPosition,\n isTextNode: isTextNode,\n emptyEl: emptyEl,\n normalizeContent: normalizeContent,\n appendContent: appendContent,\n insertContent: insertContent,\n isSingleLeftClick: isSingleLeftClick,\n $: $,\n $$: $$\n});\n\n/**\n * @file setup.js - Functions for setting up a player without\n * user interaction based on the data-setup `attribute` of the video tag.\n *\n * @module setup\n */\nvar _windowLoaded = false;\nvar videojs;\n/**\n * Set up any tags that have a data-setup `attribute` when the player is started.\n */\n\nvar autoSetup = function autoSetup() {\n // Protect against breakage in non-browser environments and check global autoSetup option.\n if (!isReal() || videojs.options.autoSetup === false) {\n return;\n }\n\n var vids = Array.prototype.slice.call(document.getElementsByTagName('video'));\n var audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));\n var divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));\n var mediaEls = vids.concat(audios, divs); // Check if any media elements exist\n\n if (mediaEls && mediaEls.length > 0) {\n for (var i = 0, e = mediaEls.length; i < e; i++) {\n var mediaEl = mediaEls[i]; // Check if element exists, has getAttribute func.\n\n if (mediaEl && mediaEl.getAttribute) {\n // Make sure this player hasn't already been set up.\n if (mediaEl.player === undefined) {\n var options = mediaEl.getAttribute('data-setup'); // Check if data-setup attr exists.\n // We only auto-setup if they've added the data-setup attr.\n\n if (options !== null) {\n // Create new video.js instance.\n videojs(mediaEl);\n }\n } // If getAttribute isn't defined, we need to wait for the DOM.\n\n } else {\n autoSetupTimeout(1);\n break;\n }\n } // No videos were found, so keep looping unless page is finished loading.\n\n } else if (!_windowLoaded) {\n autoSetupTimeout(1);\n }\n};\n/**\n * Wait until the page is loaded before running autoSetup. This will be called in\n * autoSetup if `hasLoaded` returns false.\n *\n * @param {number} wait\n * How long to wait in ms\n *\n * @param {module:videojs} [vjs]\n * The videojs library function\n */\n\n\nfunction autoSetupTimeout(wait, vjs) {\n if (vjs) {\n videojs = vjs;\n }\n\n window$1.setTimeout(autoSetup, wait);\n}\n/**\n * Used to set the internal tracking of window loaded state to true.\n *\n * @private\n */\n\n\nfunction setWindowLoaded() {\n _windowLoaded = true;\n window$1.removeEventListener('load', setWindowLoaded);\n}\n\nif (isReal()) {\n if (document.readyState === 'complete') {\n setWindowLoaded();\n } else {\n /**\n * Listen for the load event on window, and set _windowLoaded to true.\n *\n * We use a standard event listener here to avoid incrementing the GUID\n * before any players are created.\n *\n * @listens load\n */\n window$1.addEventListener('load', setWindowLoaded);\n }\n}\n\n/**\n * @file stylesheet.js\n * @module stylesheet\n */\n/**\n * Create a DOM syle element given a className for it.\n *\n * @param {string} className\n * The className to add to the created style element.\n *\n * @return {Element}\n * The element that was created.\n */\n\nvar createStyleElement = function createStyleElement(className) {\n var style = document.createElement('style');\n style.className = className;\n return style;\n};\n/**\n * Add text to a DOM element.\n *\n * @param {Element} el\n * The Element to add text content to.\n *\n * @param {string} content\n * The text to add to the element.\n */\n\nvar setTextContent = function setTextContent(el, content) {\n if (el.styleSheet) {\n el.styleSheet.cssText = content;\n } else {\n el.textContent = content;\n }\n};\n\n/**\n * @file guid.js\n * @module guid\n */\n// Default value for GUIDs. This allows us to reset the GUID counter in tests.\n//\n// The initial GUID is 3 because some users have come to rely on the first\n// default player ID ending up as `vjs_video_3`.\n//\n// See: https://github.com/videojs/video.js/pull/6216\nvar _initialGuid = 3;\n/**\n * Unique ID for an element or function\n *\n * @type {Number}\n */\n\nvar _guid = _initialGuid;\n/**\n * Get a unique auto-incrementing ID by number that has not been returned before.\n *\n * @return {number}\n * A new unique ID.\n */\n\nfunction newGUID() {\n return _guid++;\n}\n\n/**\n * @file dom-data.js\n * @module dom-data\n */\nvar FakeWeakMap;\n\nif (!window$1.WeakMap) {\n FakeWeakMap = /*#__PURE__*/function () {\n function FakeWeakMap() {\n this.vdata = 'vdata' + Math.floor(window$1.performance && window$1.performance.now() || Date.now());\n this.data = {};\n }\n\n var _proto = FakeWeakMap.prototype;\n\n _proto.set = function set(key, value) {\n var access = key[this.vdata] || newGUID();\n\n if (!key[this.vdata]) {\n key[this.vdata] = access;\n }\n\n this.data[access] = value;\n return this;\n };\n\n _proto.get = function get(key) {\n var access = key[this.vdata]; // we have data, return it\n\n if (access) {\n return this.data[access];\n } // we don't have data, return nothing.\n // return undefined explicitly as that's the contract for this method\n\n\n log('We have no data for this element', key);\n return undefined;\n };\n\n _proto.has = function has(key) {\n var access = key[this.vdata];\n return access in this.data;\n };\n\n _proto[\"delete\"] = function _delete(key) {\n var access = key[this.vdata];\n\n if (access) {\n delete this.data[access];\n delete key[this.vdata];\n }\n };\n\n return FakeWeakMap;\n }();\n}\n/**\n * Element Data Store.\n *\n * Allows for binding data to an element without putting it directly on the\n * element. Ex. Event listeners are stored here.\n * (also from jsninja.com, slightly modified and updated for closure compiler)\n *\n * @type {Object}\n * @private\n */\n\n\nvar DomData = window$1.WeakMap ? new WeakMap() : new FakeWeakMap();\n\n/**\n * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)\n * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)\n * This should work very similarly to jQuery's events, however it's based off the book version which isn't as\n * robust as jquery's, so there's probably some differences.\n *\n * @file events.js\n * @module events\n */\n/**\n * Clean up the listener cache and dispatchers\n *\n * @param {Element|Object} elem\n * Element to clean up\n *\n * @param {string} type\n * Type of event to clean up\n */\n\nfunction _cleanUpEvents(elem, type) {\n if (!DomData.has(elem)) {\n return;\n }\n\n var data = DomData.get(elem); // Remove the events of a particular type if there are none left\n\n if (data.handlers[type].length === 0) {\n delete data.handlers[type]; // data.handlers[type] = null;\n // Setting to null was causing an error with data.handlers\n // Remove the meta-handler from the element\n\n if (elem.removeEventListener) {\n elem.removeEventListener(type, data.dispatcher, false);\n } else if (elem.detachEvent) {\n elem.detachEvent('on' + type, data.dispatcher);\n }\n } // Remove the events object if there are no types left\n\n\n if (Object.getOwnPropertyNames(data.handlers).length <= 0) {\n delete data.handlers;\n delete data.dispatcher;\n delete data.disabled;\n } // Finally remove the element data if there is no data left\n\n\n if (Object.getOwnPropertyNames(data).length === 0) {\n DomData[\"delete\"](elem);\n }\n}\n/**\n * Loops through an array of event types and calls the requested method for each type.\n *\n * @param {Function} fn\n * The event method we want to use.\n *\n * @param {Element|Object} elem\n * Element or object to bind listeners to\n *\n * @param {string} type\n * Type of event to bind to.\n *\n * @param {EventTarget~EventListener} callback\n * Event listener.\n */\n\n\nfunction _handleMultipleEvents(fn, elem, types, callback) {\n types.forEach(function (type) {\n // Call the event method for each one of the types\n fn(elem, type, callback);\n });\n}\n/**\n * Fix a native event to have standard property values\n *\n * @param {Object} event\n * Event object to fix.\n *\n * @return {Object}\n * Fixed event object.\n */\n\n\nfunction fixEvent(event) {\n if (event.fixed_) {\n return event;\n }\n\n function returnTrue() {\n return true;\n }\n\n function returnFalse() {\n return false;\n } // Test if fixing up is needed\n // Used to check if !event.stopPropagation instead of isPropagationStopped\n // But native events return true for stopPropagation, but don't have\n // other expected methods like isPropagationStopped. Seems to be a problem\n // with the Javascript Ninja code. So we're just overriding all events now.\n\n\n if (!event || !event.isPropagationStopped) {\n var old = event || window$1.event;\n event = {}; // Clone the old object so that we can modify the values event = {};\n // IE8 Doesn't like when you mess with native event properties\n // Firefox returns false for event.hasOwnProperty('type') and other props\n // which makes copying more difficult.\n // TODO: Probably best to create a whitelist of event props\n\n for (var key in old) {\n // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y\n // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation\n // and webkitMovementX/Y\n if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY') {\n // Chrome 32+ warns if you try to copy deprecated returnValue, but\n // we still want to if preventDefault isn't supported (IE8).\n if (!(key === 'returnValue' && old.preventDefault)) {\n event[key] = old[key];\n }\n }\n } // The event occurred on this element\n\n\n if (!event.target) {\n event.target = event.srcElement || document;\n } // Handle which other element the event is related to\n\n\n if (!event.relatedTarget) {\n event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;\n } // Stop the default browser action\n\n\n event.preventDefault = function () {\n if (old.preventDefault) {\n old.preventDefault();\n }\n\n event.returnValue = false;\n old.returnValue = false;\n event.defaultPrevented = true;\n };\n\n event.defaultPrevented = false; // Stop the event from bubbling\n\n event.stopPropagation = function () {\n if (old.stopPropagation) {\n old.stopPropagation();\n }\n\n event.cancelBubble = true;\n old.cancelBubble = true;\n event.isPropagationStopped = returnTrue;\n };\n\n event.isPropagationStopped = returnFalse; // Stop the event from bubbling and executing other handlers\n\n event.stopImmediatePropagation = function () {\n if (old.stopImmediatePropagation) {\n old.stopImmediatePropagation();\n }\n\n event.isImmediatePropagationStopped = returnTrue;\n event.stopPropagation();\n };\n\n event.isImmediatePropagationStopped = returnFalse; // Handle mouse position\n\n if (event.clientX !== null && event.clientX !== undefined) {\n var doc = document.documentElement;\n var body = document.body;\n event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);\n event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);\n } // Handle key presses\n\n\n event.which = event.charCode || event.keyCode; // Fix button for mouse clicks:\n // 0 == left; 1 == middle; 2 == right\n\n if (event.button !== null && event.button !== undefined) {\n // The following is disabled because it does not pass videojs-standard\n // and... yikes.\n\n /* eslint-disable */\n event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;\n /* eslint-enable */\n }\n }\n\n event.fixed_ = true; // Returns fixed-up instance\n\n return event;\n}\n/**\n * Whether passive event listeners are supported\n */\n\nvar _supportsPassive;\n\nvar supportsPassive = function supportsPassive() {\n if (typeof _supportsPassive !== 'boolean') {\n _supportsPassive = false;\n\n try {\n var opts = Object.defineProperty({}, 'passive', {\n get: function get() {\n _supportsPassive = true;\n }\n });\n window$1.addEventListener('test', null, opts);\n window$1.removeEventListener('test', null, opts);\n } catch (e) {// disregard\n }\n }\n\n return _supportsPassive;\n};\n/**\n * Touch events Chrome expects to be passive\n */\n\n\nvar passiveEvents = ['touchstart', 'touchmove'];\n/**\n * Add an event listener to element\n * It stores the handler function in a separate cache object\n * and adds a generic handler to the element's event,\n * along with a unique id (guid) to the element.\n *\n * @param {Element|Object} elem\n * Element or object to bind listeners to\n *\n * @param {string|string[]} type\n * Type of event to bind to.\n *\n * @param {EventTarget~EventListener} fn\n * Event listener.\n */\n\nfunction on(elem, type, fn) {\n if (Array.isArray(type)) {\n return _handleMultipleEvents(on, elem, type, fn);\n }\n\n if (!DomData.has(elem)) {\n DomData.set(elem, {});\n }\n\n var data = DomData.get(elem); // We need a place to store all our handler data\n\n if (!data.handlers) {\n data.handlers = {};\n }\n\n if (!data.handlers[type]) {\n data.handlers[type] = [];\n }\n\n if (!fn.guid) {\n fn.guid = newGUID();\n }\n\n data.handlers[type].push(fn);\n\n if (!data.dispatcher) {\n data.disabled = false;\n\n data.dispatcher = function (event, hash) {\n if (data.disabled) {\n return;\n }\n\n event = fixEvent(event);\n var handlers = data.handlers[event.type];\n\n if (handlers) {\n // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.\n var handlersCopy = handlers.slice(0);\n\n for (var m = 0, n = handlersCopy.length; m < n; m++) {\n if (event.isImmediatePropagationStopped()) {\n break;\n } else {\n try {\n handlersCopy[m].call(elem, event, hash);\n } catch (e) {\n log.error(e);\n }\n }\n }\n }\n };\n }\n\n if (data.handlers[type].length === 1) {\n if (elem.addEventListener) {\n var options = false;\n\n if (supportsPassive() && passiveEvents.indexOf(type) > -1) {\n options = {\n passive: true\n };\n }\n\n elem.addEventListener(type, data.dispatcher, options);\n } else if (elem.attachEvent) {\n elem.attachEvent('on' + type, data.dispatcher);\n }\n }\n}\n/**\n * Removes event listeners from an element\n *\n * @param {Element|Object} elem\n * Object to remove listeners from.\n *\n * @param {string|string[]} [type]\n * Type of listener to remove. Don't include to remove all events from element.\n *\n * @param {EventTarget~EventListener} [fn]\n * Specific listener to remove. Don't include to remove listeners for an event\n * type.\n */\n\nfunction off(elem, type, fn) {\n // Don't want to add a cache object through getElData if not needed\n if (!DomData.has(elem)) {\n return;\n }\n\n var data = DomData.get(elem); // If no events exist, nothing to unbind\n\n if (!data.handlers) {\n return;\n }\n\n if (Array.isArray(type)) {\n return _handleMultipleEvents(off, elem, type, fn);\n } // Utility function\n\n\n var removeType = function removeType(el, t) {\n data.handlers[t] = [];\n\n _cleanUpEvents(el, t);\n }; // Are we removing all bound events?\n\n\n if (type === undefined) {\n for (var t in data.handlers) {\n if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {\n removeType(elem, t);\n }\n }\n\n return;\n }\n\n var handlers = data.handlers[type]; // If no handlers exist, nothing to unbind\n\n if (!handlers) {\n return;\n } // If no listener was provided, remove all listeners for type\n\n\n if (!fn) {\n removeType(elem, type);\n return;\n } // We're only removing a single handler\n\n\n if (fn.guid) {\n for (var n = 0; n < handlers.length; n++) {\n if (handlers[n].guid === fn.guid) {\n handlers.splice(n--, 1);\n }\n }\n }\n\n _cleanUpEvents(elem, type);\n}\n/**\n * Trigger an event for an element\n *\n * @param {Element|Object} elem\n * Element to trigger an event on\n *\n * @param {EventTarget~Event|string} event\n * A string (the type) or an event object with a type attribute\n *\n * @param {Object} [hash]\n * data hash to pass along with the event\n *\n * @return {boolean|undefined}\n * Returns the opposite of `defaultPrevented` if default was\n * prevented. Otherwise, returns `undefined`\n */\n\nfunction trigger(elem, event, hash) {\n // Fetches element data and a reference to the parent (for bubbling).\n // Don't want to add a data object to cache for every parent,\n // so checking hasElData first.\n var elemData = DomData.has(elem) ? DomData.get(elem) : {};\n var parent = elem.parentNode || elem.ownerDocument; // type = event.type || event,\n // handler;\n // If an event name was passed as a string, creates an event out of it\n\n if (typeof event === 'string') {\n event = {\n type: event,\n target: elem\n };\n } else if (!event.target) {\n event.target = elem;\n } // Normalizes the event properties.\n\n\n event = fixEvent(event); // If the passed element has a dispatcher, executes the established handlers.\n\n if (elemData.dispatcher) {\n elemData.dispatcher.call(elem, event, hash);\n } // Unless explicitly stopped or the event does not bubble (e.g. media events)\n // recursively calls this function to bubble the event up the DOM.\n\n\n if (parent && !event.isPropagationStopped() && event.bubbles === true) {\n trigger.call(null, parent, event, hash); // If at the top of the DOM, triggers the default action unless disabled.\n } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {\n if (!DomData.has(event.target)) {\n DomData.set(event.target, {});\n }\n\n var targetData = DomData.get(event.target); // Checks if the target has a default action for this event.\n\n if (event.target[event.type]) {\n // Temporarily disables event dispatching on the target as we have already executed the handler.\n targetData.disabled = true; // Executes the default action.\n\n if (typeof event.target[event.type] === 'function') {\n event.target[event.type]();\n } // Re-enables event dispatching.\n\n\n targetData.disabled = false;\n }\n } // Inform the triggerer if the default was prevented by returning false\n\n\n return !event.defaultPrevented;\n}\n/**\n * Trigger a listener only once for an event.\n *\n * @param {Element|Object} elem\n * Element or object to bind to.\n *\n * @param {string|string[]} type\n * Name/type of event\n *\n * @param {Event~EventListener} fn\n * Event listener function\n */\n\nfunction one(elem, type, fn) {\n if (Array.isArray(type)) {\n return _handleMultipleEvents(one, elem, type, fn);\n }\n\n var func = function func() {\n off(elem, type, func);\n fn.apply(this, arguments);\n }; // copy the guid to the new function so it can removed using the original function's ID\n\n\n func.guid = fn.guid = fn.guid || newGUID();\n on(elem, type, func);\n}\n/**\n * Trigger a listener only once and then turn if off for all\n * configured events\n *\n * @param {Element|Object} elem\n * Element or object to bind to.\n *\n * @param {string|string[]} type\n * Name/type of event\n *\n * @param {Event~EventListener} fn\n * Event listener function\n */\n\nfunction any(elem, type, fn) {\n var func = function func() {\n off(elem, type, func);\n fn.apply(this, arguments);\n }; // copy the guid to the new function so it can removed using the original function's ID\n\n\n func.guid = fn.guid = fn.guid || newGUID(); // multiple ons, but one off for everything\n\n on(elem, type, func);\n}\n\nvar Events = /*#__PURE__*/Object.freeze({\n __proto__: null,\n fixEvent: fixEvent,\n on: on,\n off: off,\n trigger: trigger,\n one: one,\n any: any\n});\n\n/**\n * @file fn.js\n * @module fn\n */\nvar UPDATE_REFRESH_INTERVAL = 30;\n/**\n * Bind (a.k.a proxy or context). A simple method for changing the context of\n * a function.\n *\n * It also stores a unique id on the function so it can be easily removed from\n * events.\n *\n * @function\n * @param {Mixed} context\n * The object to bind as scope.\n *\n * @param {Function} fn\n * The function to be bound to a scope.\n *\n * @param {number} [uid]\n * An optional unique ID for the function to be set\n *\n * @return {Function}\n * The new function that will be bound into the context given\n */\n\nvar bind = function bind(context, fn, uid) {\n // Make sure the function has a unique ID\n if (!fn.guid) {\n fn.guid = newGUID();\n } // Create the new function that changes the context\n\n\n var bound = fn.bind(context); // Allow for the ability to individualize this function\n // Needed in the case where multiple objects might share the same prototype\n // IF both items add an event listener with the same function, then you try to remove just one\n // it will remove both because they both have the same guid.\n // when using this, you need to use the bind method when you remove the listener as well.\n // currently used in text tracks\n\n bound.guid = uid ? uid + '_' + fn.guid : fn.guid;\n return bound;\n};\n/**\n * Wraps the given function, `fn`, with a new function that only invokes `fn`\n * at most once per every `wait` milliseconds.\n *\n * @function\n * @param {Function} fn\n * The function to be throttled.\n *\n * @param {number} wait\n * The number of milliseconds by which to throttle.\n *\n * @return {Function}\n */\n\nvar throttle = function throttle(fn, wait) {\n var last = window$1.performance.now();\n\n var throttled = function throttled() {\n var now = window$1.performance.now();\n\n if (now - last >= wait) {\n fn.apply(void 0, arguments);\n last = now;\n }\n };\n\n return throttled;\n};\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked.\n *\n * Inspired by lodash and underscore implementations.\n *\n * @function\n * @param {Function} func\n * The function to wrap with debounce behavior.\n *\n * @param {number} wait\n * The number of milliseconds to wait after the last invocation.\n *\n * @param {boolean} [immediate]\n * Whether or not to invoke the function immediately upon creation.\n *\n * @param {Object} [context=window]\n * The \"context\" in which the debounced function should debounce. For\n * example, if this function should be tied to a Video.js player,\n * the player can be passed here. Alternatively, defaults to the\n * global `window` object.\n *\n * @return {Function}\n * A debounced function.\n */\n\nvar debounce = function debounce(func, wait, immediate, context) {\n if (context === void 0) {\n context = window$1;\n }\n\n var timeout;\n\n var cancel = function cancel() {\n context.clearTimeout(timeout);\n timeout = null;\n };\n /* eslint-disable consistent-this */\n\n\n var debounced = function debounced() {\n var self = this;\n var args = arguments;\n\n var _later = function later() {\n timeout = null;\n _later = null;\n\n if (!immediate) {\n func.apply(self, args);\n }\n };\n\n if (!timeout && immediate) {\n func.apply(self, args);\n }\n\n context.clearTimeout(timeout);\n timeout = context.setTimeout(_later, wait);\n };\n /* eslint-enable consistent-this */\n\n\n debounced.cancel = cancel;\n return debounced;\n};\n\n/**\n * @file src/js/event-target.js\n */\n/**\n * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It\n * adds shorthand functions that wrap around lengthy functions. For example:\n * the `on` function is a wrapper around `addEventListener`.\n *\n * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}\n * @class EventTarget\n */\n\nvar EventTarget = function EventTarget() {};\n/**\n * A Custom DOM event.\n *\n * @typedef {Object} EventTarget~Event\n * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}\n */\n\n/**\n * All event listeners should follow the following format.\n *\n * @callback EventTarget~EventListener\n * @this {EventTarget}\n *\n * @param {EventTarget~Event} event\n * the event that triggered this function\n *\n * @param {Object} [hash]\n * hash of data sent during the event\n */\n\n/**\n * An object containing event names as keys and booleans as values.\n *\n * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}\n * will have extra functionality. See that function for more information.\n *\n * @property EventTarget.prototype.allowedEvents_\n * @private\n */\n\n\nEventTarget.prototype.allowedEvents_ = {};\n/**\n * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n * function that will get called when an event with a certain name gets triggered.\n *\n * @param {string|string[]} type\n * An event name or an array of event names.\n *\n * @param {EventTarget~EventListener} fn\n * The function to call with `EventTarget`s\n */\n\nEventTarget.prototype.on = function (type, fn) {\n // Remove the addEventListener alias before calling Events.on\n // so we don't get into an infinite type loop\n var ael = this.addEventListener;\n\n this.addEventListener = function () {};\n\n on(this, type, fn);\n this.addEventListener = ael;\n};\n/**\n * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic\n * the standard DOM API.\n *\n * @function\n * @see {@link EventTarget#on}\n */\n\n\nEventTarget.prototype.addEventListener = EventTarget.prototype.on;\n/**\n * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n * This makes it so that the `event listener` will no longer get called when the\n * named event happens.\n *\n * @param {string|string[]} type\n * An event name or an array of event names.\n *\n * @param {EventTarget~EventListener} fn\n * The function to remove.\n */\n\nEventTarget.prototype.off = function (type, fn) {\n off(this, type, fn);\n};\n/**\n * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic\n * the standard DOM API.\n *\n * @function\n * @see {@link EventTarget#off}\n */\n\n\nEventTarget.prototype.removeEventListener = EventTarget.prototype.off;\n/**\n * This function will add an `event listener` that gets triggered only once. After the\n * first trigger it will get removed. This is like adding an `event listener`\n * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n *\n * @param {string|string[]} type\n * An event name or an array of event names.\n *\n * @param {EventTarget~EventListener} fn\n * The function to be called once for each event name.\n */\n\nEventTarget.prototype.one = function (type, fn) {\n // Remove the addEventListener aliasing Events.on\n // so we don't get into an infinite type loop\n var ael = this.addEventListener;\n\n this.addEventListener = function () {};\n\n one(this, type, fn);\n this.addEventListener = ael;\n};\n\nEventTarget.prototype.any = function (type, fn) {\n // Remove the addEventListener aliasing Events.on\n // so we don't get into an infinite type loop\n var ael = this.addEventListener;\n\n this.addEventListener = function () {};\n\n any(this, type, fn);\n this.addEventListener = ael;\n};\n/**\n * This function causes an event to happen. This will then cause any `event listeners`\n * that are waiting for that event, to get called. If there are no `event listeners`\n * for an event then nothing will happen.\n *\n * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n * Trigger will also call the `on` + `uppercaseEventName` function.\n *\n * Example:\n * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n * `onClick` if it exists.\n *\n * @param {string|EventTarget~Event|Object} event\n * The name of the event, an `Event`, or an object with a key of type set to\n * an event name.\n */\n\n\nEventTarget.prototype.trigger = function (event) {\n var type = event.type || event; // deprecation\n // In a future version we should default target to `this`\n // similar to how we default the target to `elem` in\n // `Events.trigger`. Right now the default `target` will be\n // `document` due to the `Event.fixEvent` call.\n\n if (typeof event === 'string') {\n event = {\n type: type\n };\n }\n\n event = fixEvent(event);\n\n if (this.allowedEvents_[type] && this['on' + type]) {\n this['on' + type](event);\n }\n\n trigger(this, event);\n};\n/**\n * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic\n * the standard DOM API.\n *\n * @function\n * @see {@link EventTarget#trigger}\n */\n\n\nEventTarget.prototype.dispatchEvent = EventTarget.prototype.trigger;\nvar EVENT_MAP;\n\nEventTarget.prototype.queueTrigger = function (event) {\n var _this = this;\n\n // only set up EVENT_MAP if it'll be used\n if (!EVENT_MAP) {\n EVENT_MAP = new Map();\n }\n\n var type = event.type || event;\n var map = EVENT_MAP.get(this);\n\n if (!map) {\n map = new Map();\n EVENT_MAP.set(this, map);\n }\n\n var oldTimeout = map.get(type);\n map[\"delete\"](type);\n window$1.clearTimeout(oldTimeout);\n var timeout = window$1.setTimeout(function () {\n // if we cleared out all timeouts for the current target, delete its map\n if (map.size === 0) {\n map = null;\n EVENT_MAP[\"delete\"](_this);\n }\n\n _this.trigger(event);\n }, 0);\n map.set(type, timeout);\n};\n\n/**\n * @file mixins/evented.js\n * @module evented\n */\n/**\n * Returns whether or not an object has had the evented mixin applied.\n *\n * @param {Object} object\n * An object to test.\n *\n * @return {boolean}\n * Whether or not the object appears to be evented.\n */\n\nvar isEvented = function isEvented(object) {\n return object instanceof EventTarget || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(function (k) {\n return typeof object[k] === 'function';\n });\n};\n/**\n * Adds a callback to run after the evented mixin applied.\n *\n * @param {Object} object\n * An object to Add\n * @param {Function} callback\n * The callback to run.\n */\n\n\nvar addEventedCallback = function addEventedCallback(target, callback) {\n if (isEvented(target)) {\n callback();\n } else {\n if (!target.eventedCallbacks) {\n target.eventedCallbacks = [];\n }\n\n target.eventedCallbacks.push(callback);\n }\n};\n/**\n * Whether a value is a valid event type - non-empty string or array.\n *\n * @private\n * @param {string|Array} type\n * The type value to test.\n *\n * @return {boolean}\n * Whether or not the type is a valid event type.\n */\n\n\nvar isValidEventType = function isValidEventType(type) {\n return (// The regex here verifies that the `type` contains at least one non-\n // whitespace character.\n typeof type === 'string' && /\\S/.test(type) || Array.isArray(type) && !!type.length\n );\n};\n/**\n * Validates a value to determine if it is a valid event target. Throws if not.\n *\n * @private\n * @throws {Error}\n * If the target does not appear to be a valid event target.\n *\n * @param {Object} target\n * The object to test.\n */\n\n\nvar validateTarget = function validateTarget(target) {\n if (!target.nodeName && !isEvented(target)) {\n throw new Error('Invalid target; must be a DOM node or evented object.');\n }\n};\n/**\n * Validates a value to determine if it is a valid event target. Throws if not.\n *\n * @private\n * @throws {Error}\n * If the type does not appear to be a valid event type.\n *\n * @param {string|Array} type\n * The type to test.\n */\n\n\nvar validateEventType = function validateEventType(type) {\n if (!isValidEventType(type)) {\n throw new Error('Invalid event type; must be a non-empty string or array.');\n }\n};\n/**\n * Validates a value to determine if it is a valid listener. Throws if not.\n *\n * @private\n * @throws {Error}\n * If the listener is not a function.\n *\n * @param {Function} listener\n * The listener to test.\n */\n\n\nvar validateListener = function validateListener(listener) {\n if (typeof listener !== 'function') {\n throw new Error('Invalid listener; must be a function.');\n }\n};\n/**\n * Takes an array of arguments given to `on()` or `one()`, validates them, and\n * normalizes them into an object.\n *\n * @private\n * @param {Object} self\n * The evented object on which `on()` or `one()` was called. This\n * object will be bound as the `this` value for the listener.\n *\n * @param {Array} args\n * An array of arguments passed to `on()` or `one()`.\n *\n * @return {Object}\n * An object containing useful values for `on()` or `one()` calls.\n */\n\n\nvar normalizeListenArgs = function normalizeListenArgs(self, args) {\n // If the number of arguments is less than 3, the target is always the\n // evented object itself.\n var isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;\n var target;\n var type;\n var listener;\n\n if (isTargetingSelf) {\n target = self.eventBusEl_; // Deal with cases where we got 3 arguments, but we are still listening to\n // the evented object itself.\n\n if (args.length >= 3) {\n args.shift();\n }\n\n type = args[0];\n listener = args[1];\n } else {\n target = args[0];\n type = args[1];\n listener = args[2];\n }\n\n validateTarget(target);\n validateEventType(type);\n validateListener(listener);\n listener = bind(self, listener);\n return {\n isTargetingSelf: isTargetingSelf,\n target: target,\n type: type,\n listener: listener\n };\n};\n/**\n * Adds the listener to the event type(s) on the target, normalizing for\n * the type of target.\n *\n * @private\n * @param {Element|Object} target\n * A DOM node or evented object.\n *\n * @param {string} method\n * The event binding method to use (\"on\" or \"one\").\n *\n * @param {string|Array} type\n * One or more event type(s).\n *\n * @param {Function} listener\n * A listener function.\n */\n\n\nvar listen = function listen(target, method, type, listener) {\n validateTarget(target);\n\n if (target.nodeName) {\n Events[method](target, type, listener);\n } else {\n target[method](type, listener);\n }\n};\n/**\n * Contains methods that provide event capabilities to an object which is passed\n * to {@link module:evented|evented}.\n *\n * @mixin EventedMixin\n */\n\n\nvar EventedMixin = {\n /**\n * Add a listener to an event (or events) on this object or another evented\n * object.\n *\n * @param {string|Array|Element|Object} targetOrType\n * If this is a string or array, it represents the event type(s)\n * that will trigger the listener.\n *\n * Another evented object can be passed here instead, which will\n * cause the listener to listen for events on _that_ object.\n *\n * In either case, the listener's `this` value will be bound to\n * this object.\n *\n * @param {string|Array|Function} typeOrListener\n * If the first argument was a string or array, this should be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function.\n */\n on: function on() {\n var _this = this;\n\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n var _normalizeListenArgs = normalizeListenArgs(this, args),\n isTargetingSelf = _normalizeListenArgs.isTargetingSelf,\n target = _normalizeListenArgs.target,\n type = _normalizeListenArgs.type,\n listener = _normalizeListenArgs.listener;\n\n listen(target, 'on', type, listener); // If this object is listening to another evented object.\n\n if (!isTargetingSelf) {\n // If this object is disposed, remove the listener.\n var removeListenerOnDispose = function removeListenerOnDispose() {\n return _this.off(target, type, listener);\n }; // Use the same function ID as the listener so we can remove it later it\n // using the ID of the original listener.\n\n\n removeListenerOnDispose.guid = listener.guid; // Add a listener to the target's dispose event as well. This ensures\n // that if the target is disposed BEFORE this object, we remove the\n // removal listener that was just added. Otherwise, we create a memory leak.\n\n var removeRemoverOnTargetDispose = function removeRemoverOnTargetDispose() {\n return _this.off('dispose', removeListenerOnDispose);\n }; // Use the same function ID as the listener so we can remove it later\n // it using the ID of the original listener.\n\n\n removeRemoverOnTargetDispose.guid = listener.guid;\n listen(this, 'on', 'dispose', removeListenerOnDispose);\n listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);\n }\n },\n\n /**\n * Add a listener to an event (or events) on this object or another evented\n * object. The listener will be called once per event and then removed.\n *\n * @param {string|Array|Element|Object} targetOrType\n * If this is a string or array, it represents the event type(s)\n * that will trigger the listener.\n *\n * Another evented object can be passed here instead, which will\n * cause the listener to listen for events on _that_ object.\n *\n * In either case, the listener's `this` value will be bound to\n * this object.\n *\n * @param {string|Array|Function} typeOrListener\n * If the first argument was a string or array, this should be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function.\n */\n one: function one() {\n var _this2 = this;\n\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n var _normalizeListenArgs2 = normalizeListenArgs(this, args),\n isTargetingSelf = _normalizeListenArgs2.isTargetingSelf,\n target = _normalizeListenArgs2.target,\n type = _normalizeListenArgs2.type,\n listener = _normalizeListenArgs2.listener; // Targeting this evented object.\n\n\n if (isTargetingSelf) {\n listen(target, 'one', type, listener); // Targeting another evented object.\n } else {\n // TODO: This wrapper is incorrect! It should only\n // remove the wrapper for the event type that called it.\n // Instead all listners are removed on the first trigger!\n // see https://github.com/videojs/video.js/issues/5962\n var wrapper = function wrapper() {\n _this2.off(target, type, wrapper);\n\n for (var _len3 = arguments.length, largs = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n largs[_key3] = arguments[_key3];\n }\n\n listener.apply(null, largs);\n }; // Use the same function ID as the listener so we can remove it later\n // it using the ID of the original listener.\n\n\n wrapper.guid = listener.guid;\n listen(target, 'one', type, wrapper);\n }\n },\n\n /**\n * Add a listener to an event (or events) on this object or another evented\n * object. The listener will only be called once for the first event that is triggered\n * then removed.\n *\n * @param {string|Array|Element|Object} targetOrType\n * If this is a string or array, it represents the event type(s)\n * that will trigger the listener.\n *\n * Another evented object can be passed here instead, which will\n * cause the listener to listen for events on _that_ object.\n *\n * In either case, the listener's `this` value will be bound to\n * this object.\n *\n * @param {string|Array|Function} typeOrListener\n * If the first argument was a string or array, this should be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function.\n */\n any: function any() {\n var _this3 = this;\n\n for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {\n args[_key4] = arguments[_key4];\n }\n\n var _normalizeListenArgs3 = normalizeListenArgs(this, args),\n isTargetingSelf = _normalizeListenArgs3.isTargetingSelf,\n target = _normalizeListenArgs3.target,\n type = _normalizeListenArgs3.type,\n listener = _normalizeListenArgs3.listener; // Targeting this evented object.\n\n\n if (isTargetingSelf) {\n listen(target, 'any', type, listener); // Targeting another evented object.\n } else {\n var wrapper = function wrapper() {\n _this3.off(target, type, wrapper);\n\n for (var _len5 = arguments.length, largs = new Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {\n largs[_key5] = arguments[_key5];\n }\n\n listener.apply(null, largs);\n }; // Use the same function ID as the listener so we can remove it later\n // it using the ID of the original listener.\n\n\n wrapper.guid = listener.guid;\n listen(target, 'any', type, wrapper);\n }\n },\n\n /**\n * Removes listener(s) from event(s) on an evented object.\n *\n * @param {string|Array|Element|Object} [targetOrType]\n * If this is a string or array, it represents the event type(s).\n *\n * Another evented object can be passed here instead, in which case\n * ALL 3 arguments are _required_.\n *\n * @param {string|Array|Function} [typeOrListener]\n * If the first argument was a string or array, this may be the\n * listener function. Otherwise, this is a string or array of event\n * type(s).\n *\n * @param {Function} [listener]\n * If the first argument was another evented object, this will be\n * the listener function; otherwise, _all_ listeners bound to the\n * event type(s) will be removed.\n */\n off: function off$1(targetOrType, typeOrListener, listener) {\n // Targeting this evented object.\n if (!targetOrType || isValidEventType(targetOrType)) {\n off(this.eventBusEl_, targetOrType, typeOrListener); // Targeting another evented object.\n } else {\n var target = targetOrType;\n var type = typeOrListener; // Fail fast and in a meaningful way!\n\n validateTarget(target);\n validateEventType(type);\n validateListener(listener); // Ensure there's at least a guid, even if the function hasn't been used\n\n listener = bind(this, listener); // Remove the dispose listener on this evented object, which was given\n // the same guid as the event listener in on().\n\n this.off('dispose', listener);\n\n if (target.nodeName) {\n off(target, type, listener);\n off(target, 'dispose', listener);\n } else if (isEvented(target)) {\n target.off(type, listener);\n target.off('dispose', listener);\n }\n }\n },\n\n /**\n * Fire an event on this evented object, causing its listeners to be called.\n *\n * @param {string|Object} event\n * An event type or an object with a type property.\n *\n * @param {Object} [hash]\n * An additional object to pass along to listeners.\n *\n * @return {boolean}\n * Whether or not the default behavior was prevented.\n */\n trigger: function trigger$1(event, hash) {\n return trigger(this.eventBusEl_, event, hash);\n }\n};\n/**\n * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.\n *\n * @param {Object} target\n * The object to which to add event methods.\n *\n * @param {Object} [options={}]\n * Options for customizing the mixin behavior.\n *\n * @param {string} [options.eventBusKey]\n * By default, adds a `eventBusEl_` DOM element to the target object,\n * which is used as an event bus. If the target object already has a\n * DOM element that should be used, pass its key here.\n *\n * @return {Object}\n * The target object.\n */\n\nfunction evented(target, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n eventBusKey = _options.eventBusKey; // Set or create the eventBusEl_.\n\n if (eventBusKey) {\n if (!target[eventBusKey].nodeName) {\n throw new Error(\"The eventBusKey \\\"\" + eventBusKey + \"\\\" does not refer to an element.\");\n }\n\n target.eventBusEl_ = target[eventBusKey];\n } else {\n target.eventBusEl_ = createEl('span', {\n className: 'vjs-event-bus'\n });\n }\n\n assign(target, EventedMixin);\n\n if (target.eventedCallbacks) {\n target.eventedCallbacks.forEach(function (callback) {\n callback();\n });\n } // When any evented object is disposed, it removes all its listeners.\n\n\n target.on('dispose', function () {\n target.off();\n window$1.setTimeout(function () {\n target.eventBusEl_ = null;\n }, 0);\n });\n return target;\n}\n\n/**\n * @file mixins/stateful.js\n * @module stateful\n */\n/**\n * Contains methods that provide statefulness to an object which is passed\n * to {@link module:stateful}.\n *\n * @mixin StatefulMixin\n */\n\nvar StatefulMixin = {\n /**\n * A hash containing arbitrary keys and values representing the state of\n * the object.\n *\n * @type {Object}\n */\n state: {},\n\n /**\n * Set the state of an object by mutating its\n * {@link module:stateful~StatefulMixin.state|state} object in place.\n *\n * @fires module:stateful~StatefulMixin#statechanged\n * @param {Object|Function} stateUpdates\n * A new set of properties to shallow-merge into the plugin state.\n * Can be a plain object or a function returning a plain object.\n *\n * @return {Object|undefined}\n * An object containing changes that occurred. If no changes\n * occurred, returns `undefined`.\n */\n setState: function setState(stateUpdates) {\n var _this = this;\n\n // Support providing the `stateUpdates` state as a function.\n if (typeof stateUpdates === 'function') {\n stateUpdates = stateUpdates();\n }\n\n var changes;\n each(stateUpdates, function (value, key) {\n // Record the change if the value is different from what's in the\n // current state.\n if (_this.state[key] !== value) {\n changes = changes || {};\n changes[key] = {\n from: _this.state[key],\n to: value\n };\n }\n\n _this.state[key] = value;\n }); // Only trigger \"statechange\" if there were changes AND we have a trigger\n // function. This allows us to not require that the target object be an\n // evented object.\n\n if (changes && isEvented(this)) {\n /**\n * An event triggered on an object that is both\n * {@link module:stateful|stateful} and {@link module:evented|evented}\n * indicating that its state has changed.\n *\n * @event module:stateful~StatefulMixin#statechanged\n * @type {Object}\n * @property {Object} changes\n * A hash containing the properties that were changed and\n * the values they were changed `from` and `to`.\n */\n this.trigger({\n changes: changes,\n type: 'statechanged'\n });\n }\n\n return changes;\n }\n};\n/**\n * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target\n * object.\n *\n * If the target object is {@link module:evented|evented} and has a\n * `handleStateChanged` method, that method will be automatically bound to the\n * `statechanged` event on itself.\n *\n * @param {Object} target\n * The object to be made stateful.\n *\n * @param {Object} [defaultState]\n * A default set of properties to populate the newly-stateful object's\n * `state` property.\n *\n * @return {Object}\n * Returns the `target`.\n */\n\nfunction stateful(target, defaultState) {\n assign(target, StatefulMixin); // This happens after the mixing-in because we need to replace the `state`\n // added in that step.\n\n target.state = assign({}, target.state, defaultState); // Auto-bind the `handleStateChanged` method of the target object if it exists.\n\n if (typeof target.handleStateChanged === 'function' && isEvented(target)) {\n target.on('statechanged', target.handleStateChanged);\n }\n\n return target;\n}\n\n/**\n * @file string-cases.js\n * @module to-lower-case\n */\n\n/**\n * Lowercase the first letter of a string.\n *\n * @param {string} string\n * String to be lowercased\n *\n * @return {string}\n * The string with a lowercased first letter\n */\nvar toLowerCase = function toLowerCase(string) {\n if (typeof string !== 'string') {\n return string;\n }\n\n return string.replace(/./, function (w) {\n return w.toLowerCase();\n });\n};\n/**\n * Uppercase the first letter of a string.\n *\n * @param {string} string\n * String to be uppercased\n *\n * @return {string}\n * The string with an uppercased first letter\n */\n\nvar toTitleCase = function toTitleCase(string) {\n if (typeof string !== 'string') {\n return string;\n }\n\n return string.replace(/./, function (w) {\n return w.toUpperCase();\n });\n};\n/**\n * Compares the TitleCase versions of the two strings for equality.\n *\n * @param {string} str1\n * The first string to compare\n *\n * @param {string} str2\n * The second string to compare\n *\n * @return {boolean}\n * Whether the TitleCase versions of the strings are equal\n */\n\nvar titleCaseEquals = function titleCaseEquals(str1, str2) {\n return toTitleCase(str1) === toTitleCase(str2);\n};\n\n/**\n * @file merge-options.js\n * @module merge-options\n */\n/**\n * Merge two objects recursively.\n *\n * Performs a deep merge like\n * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges\n * plain objects (not arrays, elements, or anything else).\n *\n * Non-plain object values will be copied directly from the right-most\n * argument.\n *\n * @static\n * @param {Object[]} sources\n * One or more objects to merge into a new object.\n *\n * @return {Object}\n * A new object that is the merged result of all sources.\n */\n\nfunction mergeOptions() {\n var result = {};\n\n for (var _len = arguments.length, sources = new Array(_len), _key = 0; _key < _len; _key++) {\n sources[_key] = arguments[_key];\n }\n\n sources.forEach(function (source) {\n if (!source) {\n return;\n }\n\n each(source, function (value, key) {\n if (!isPlain(value)) {\n result[key] = value;\n return;\n }\n\n if (!isPlain(result[key])) {\n result[key] = {};\n }\n\n result[key] = mergeOptions(result[key], value);\n });\n });\n return result;\n}\n\n/**\n * Player Component - Base class for all UI objects\n *\n * @file component.js\n */\n/**\n * Base class for all UI Components.\n * Components are UI objects which represent both a javascript object and an element\n * in the DOM. They can be children of other components, and can have\n * children themselves.\n *\n * Components can also use methods from {@link EventTarget}\n */\n\nvar Component = /*#__PURE__*/function () {\n /**\n * A callback that is called when a component is ready. Does not have any\n * paramters and any callback value will be ignored.\n *\n * @callback Component~ReadyCallback\n * @this Component\n */\n\n /**\n * Creates an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Object[]} [options.children]\n * An array of children objects to intialize this component with. Children objects have\n * a name property that will be used if more than one component of the same type needs to be\n * added.\n *\n * @param {Component~ReadyCallback} [ready]\n * Function that gets called when the `Component` is ready.\n */\n function Component(player, options, ready) {\n // The component might be the player itself and we can't pass `this` to super\n if (!player && this.play) {\n this.player_ = player = this; // eslint-disable-line\n } else {\n this.player_ = player;\n }\n\n this.isDisposed_ = false; // Hold the reference to the parent component via `addChild` method\n\n this.parentComponent_ = null; // Make a copy of prototype.options_ to protect against overriding defaults\n\n this.options_ = mergeOptions({}, this.options_); // Updated options with supplied options\n\n options = this.options_ = mergeOptions(this.options_, options); // Get ID from options or options element if one is supplied\n\n this.id_ = options.id || options.el && options.el.id; // If there was no ID from the options, generate one\n\n if (!this.id_) {\n // Don't require the player ID function in the case of mock players\n var id = player && player.id && player.id() || 'no_player';\n this.id_ = id + \"_component_\" + newGUID();\n }\n\n this.name_ = options.name || null; // Create element if one wasn't provided in options\n\n if (options.el) {\n this.el_ = options.el;\n } else if (options.createEl !== false) {\n this.el_ = this.createEl();\n } // if evented is anything except false, we want to mixin in evented\n\n\n if (options.evented !== false) {\n // Make this an evented object and use `el_`, if available, as its event bus\n evented(this, {\n eventBusKey: this.el_ ? 'el_' : null\n });\n }\n\n stateful(this, this.constructor.defaultState);\n this.children_ = [];\n this.childIndex_ = {};\n this.childNameIndex_ = {};\n var SetSham;\n\n if (!window$1.Set) {\n SetSham = /*#__PURE__*/function () {\n function SetSham() {\n this.set_ = {};\n }\n\n var _proto2 = SetSham.prototype;\n\n _proto2.has = function has(key) {\n return key in this.set_;\n };\n\n _proto2[\"delete\"] = function _delete(key) {\n var has = this.has(key);\n delete this.set_[key];\n return has;\n };\n\n _proto2.add = function add(key) {\n this.set_[key] = 1;\n return this;\n };\n\n _proto2.forEach = function forEach(callback, thisArg) {\n for (var key in this.set_) {\n callback.call(thisArg, key, key, this);\n }\n };\n\n return SetSham;\n }();\n }\n\n this.setTimeoutIds_ = window$1.Set ? new Set() : new SetSham();\n this.setIntervalIds_ = window$1.Set ? new Set() : new SetSham();\n this.rafIds_ = window$1.Set ? new Set() : new SetSham();\n this.clearingTimersOnDispose_ = false; // Add any child components in options\n\n if (options.initChildren !== false) {\n this.initChildren();\n }\n\n this.ready(ready); // Don't want to trigger ready here or it will before init is actually\n // finished for all children that run this constructor\n\n if (options.reportTouchActivity !== false) {\n this.enableTouchActivity();\n }\n }\n /**\n * Dispose of the `Component` and all child components.\n *\n * @fires Component#dispose\n */\n\n\n var _proto = Component.prototype;\n\n _proto.dispose = function dispose() {\n // Bail out if the component has already been disposed.\n if (this.isDisposed_) {\n return;\n }\n /**\n * Triggered when a `Component` is disposed.\n *\n * @event Component#dispose\n * @type {EventTarget~Event}\n *\n * @property {boolean} [bubbles=false]\n * set to false so that the dispose event does not\n * bubble up\n */\n\n\n this.trigger({\n type: 'dispose',\n bubbles: false\n });\n this.isDisposed_ = true; // Dispose all children.\n\n if (this.children_) {\n for (var i = this.children_.length - 1; i >= 0; i--) {\n if (this.children_[i].dispose) {\n this.children_[i].dispose();\n }\n }\n } // Delete child references\n\n\n this.children_ = null;\n this.childIndex_ = null;\n this.childNameIndex_ = null;\n this.parentComponent_ = null;\n\n if (this.el_) {\n // Remove element from DOM\n if (this.el_.parentNode) {\n this.el_.parentNode.removeChild(this.el_);\n }\n\n if (DomData.has(this.el_)) {\n DomData[\"delete\"](this.el_);\n }\n\n this.el_ = null;\n } // remove reference to the player after disposing of the element\n\n\n this.player_ = null;\n }\n /**\n * Determine whether or not this component has been disposed.\n *\n * @return {boolean}\n * If the component has been disposed, will be `true`. Otherwise, `false`.\n */\n ;\n\n _proto.isDisposed = function isDisposed() {\n return Boolean(this.isDisposed_);\n }\n /**\n * Return the {@link Player} that the `Component` has attached to.\n *\n * @return {Player}\n * The player that this `Component` has attached to.\n */\n ;\n\n _proto.player = function player() {\n return this.player_;\n }\n /**\n * Deep merge of options objects with new options.\n * > Note: When both `obj` and `options` contain properties whose values are objects.\n * The two properties get merged using {@link module:mergeOptions}\n *\n * @param {Object} obj\n * The object that contains new options.\n *\n * @return {Object}\n * A new object of `this.options_` and `obj` merged together.\n */\n ;\n\n _proto.options = function options(obj) {\n if (!obj) {\n return this.options_;\n }\n\n this.options_ = mergeOptions(this.options_, obj);\n return this.options_;\n }\n /**\n * Get the `Component`s DOM element\n *\n * @return {Element}\n * The DOM element for this `Component`.\n */\n ;\n\n _proto.el = function el() {\n return this.el_;\n }\n /**\n * Create the `Component`s DOM element.\n *\n * @param {string} [tagName]\n * Element's DOM node type. e.g. 'div'\n *\n * @param {Object} [properties]\n * An object of properties that should be set.\n *\n * @param {Object} [attributes]\n * An object of attributes that should be set.\n *\n * @return {Element}\n * The element that gets created.\n */\n ;\n\n _proto.createEl = function createEl$1(tagName, properties, attributes) {\n return createEl(tagName, properties, attributes);\n }\n /**\n * Localize a string given the string in english.\n *\n * If tokens are provided, it'll try and run a simple token replacement on the provided string.\n * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.\n *\n * If a `defaultValue` is provided, it'll use that over `string`,\n * if a value isn't found in provided language files.\n * This is useful if you want to have a descriptive key for token replacement\n * but have a succinct localized string and not require `en.json` to be included.\n *\n * Currently, it is used for the progress bar timing.\n * ```js\n * {\n * \"progress bar timing: currentTime={1} duration={2}\": \"{1} of {2}\"\n * }\n * ```\n * It is then used like so:\n * ```js\n * this.localize('progress bar timing: currentTime={1} duration{2}',\n * [this.player_.currentTime(), this.player_.duration()],\n * '{1} of {2}');\n * ```\n *\n * Which outputs something like: `01:23 of 24:56`.\n *\n *\n * @param {string} string\n * The string to localize and the key to lookup in the language files.\n * @param {string[]} [tokens]\n * If the current item has token replacements, provide the tokens here.\n * @param {string} [defaultValue]\n * Defaults to `string`. Can be a default value to use for token replacement\n * if the lookup key is needed to be separate.\n *\n * @return {string}\n * The localized string or if no localization exists the english string.\n */\n ;\n\n _proto.localize = function localize(string, tokens, defaultValue) {\n if (defaultValue === void 0) {\n defaultValue = string;\n }\n\n var code = this.player_.language && this.player_.language();\n var languages = this.player_.languages && this.player_.languages();\n var language = languages && languages[code];\n var primaryCode = code && code.split('-')[0];\n var primaryLang = languages && languages[primaryCode];\n var localizedString = defaultValue;\n\n if (language && language[string]) {\n localizedString = language[string];\n } else if (primaryLang && primaryLang[string]) {\n localizedString = primaryLang[string];\n }\n\n if (tokens) {\n localizedString = localizedString.replace(/\\{(\\d+)\\}/g, function (match, index) {\n var value = tokens[index - 1];\n var ret = value;\n\n if (typeof value === 'undefined') {\n ret = match;\n }\n\n return ret;\n });\n }\n\n return localizedString;\n }\n /**\n * Return the `Component`s DOM element. This is where children get inserted.\n * This will usually be the the same as the element returned in {@link Component#el}.\n *\n * @return {Element}\n * The content element for this `Component`.\n */\n ;\n\n _proto.contentEl = function contentEl() {\n return this.contentEl_ || this.el_;\n }\n /**\n * Get this `Component`s ID\n *\n * @return {string}\n * The id of this `Component`\n */\n ;\n\n _proto.id = function id() {\n return this.id_;\n }\n /**\n * Get the `Component`s name. The name gets used to reference the `Component`\n * and is set during registration.\n *\n * @return {string}\n * The name of this `Component`.\n */\n ;\n\n _proto.name = function name() {\n return this.name_;\n }\n /**\n * Get an array of all child components\n *\n * @return {Array}\n * The children\n */\n ;\n\n _proto.children = function children() {\n return this.children_;\n }\n /**\n * Returns the child `Component` with the given `id`.\n *\n * @param {string} id\n * The id of the child `Component` to get.\n *\n * @return {Component|undefined}\n * The child `Component` with the given `id` or undefined.\n */\n ;\n\n _proto.getChildById = function getChildById(id) {\n return this.childIndex_[id];\n }\n /**\n * Returns the child `Component` with the given `name`.\n *\n * @param {string} name\n * The name of the child `Component` to get.\n *\n * @return {Component|undefined}\n * The child `Component` with the given `name` or undefined.\n */\n ;\n\n _proto.getChild = function getChild(name) {\n if (!name) {\n return;\n }\n\n return this.childNameIndex_[name];\n }\n /**\n * Returns the descendant `Component` following the givent\n * descendant `names`. For instance ['foo', 'bar', 'baz'] would\n * try to get 'foo' on the current component, 'bar' on the 'foo'\n * component and 'baz' on the 'bar' component and return undefined\n * if any of those don't exist.\n *\n * @param {...string[]|...string} names\n * The name of the child `Component` to get.\n *\n * @return {Component|undefined}\n * The descendant `Component` following the given descendant\n * `names` or undefined.\n */\n ;\n\n _proto.getDescendant = function getDescendant() {\n for (var _len = arguments.length, names = new Array(_len), _key = 0; _key < _len; _key++) {\n names[_key] = arguments[_key];\n }\n\n // flatten array argument into the main array\n names = names.reduce(function (acc, n) {\n return acc.concat(n);\n }, []);\n var currentChild = this;\n\n for (var i = 0; i < names.length; i++) {\n currentChild = currentChild.getChild(names[i]);\n\n if (!currentChild || !currentChild.getChild) {\n return;\n }\n }\n\n return currentChild;\n }\n /**\n * Add a child `Component` inside the current `Component`.\n *\n *\n * @param {string|Component} child\n * The name or instance of a child to add.\n *\n * @param {Object} [options={}]\n * The key/value store of options that will get passed to children of\n * the child.\n *\n * @param {number} [index=this.children_.length]\n * The index to attempt to add a child into.\n *\n * @return {Component}\n * The `Component` that gets added as a child. When using a string the\n * `Component` will get created by this process.\n */\n ;\n\n _proto.addChild = function addChild(child, options, index) {\n if (options === void 0) {\n options = {};\n }\n\n if (index === void 0) {\n index = this.children_.length;\n }\n\n var component;\n var componentName; // If child is a string, create component with options\n\n if (typeof child === 'string') {\n componentName = toTitleCase(child);\n var componentClassName = options.componentClass || componentName; // Set name through options\n\n options.name = componentName; // Create a new object & element for this controls set\n // If there's no .player_, this is a player\n\n var ComponentClass = Component.getComponent(componentClassName);\n\n if (!ComponentClass) {\n throw new Error(\"Component \" + componentClassName + \" does not exist\");\n } // data stored directly on the videojs object may be\n // misidentified as a component to retain\n // backwards-compatibility with 4.x. check to make sure the\n // component class can be instantiated.\n\n\n if (typeof ComponentClass !== 'function') {\n return null;\n }\n\n component = new ComponentClass(this.player_ || this, options); // child is a component instance\n } else {\n component = child;\n }\n\n if (component.parentComponent_) {\n component.parentComponent_.removeChild(component);\n }\n\n this.children_.splice(index, 0, component);\n component.parentComponent_ = this;\n\n if (typeof component.id === 'function') {\n this.childIndex_[component.id()] = component;\n } // If a name wasn't used to create the component, check if we can use the\n // name function of the component\n\n\n componentName = componentName || component.name && toTitleCase(component.name());\n\n if (componentName) {\n this.childNameIndex_[componentName] = component;\n this.childNameIndex_[toLowerCase(componentName)] = component;\n } // Add the UI object's element to the container div (box)\n // Having an element is not required\n\n\n if (typeof component.el === 'function' && component.el()) {\n // If inserting before a component, insert before that component's element\n var refNode = null;\n\n if (this.children_[index + 1]) {\n // Most children are components, but the video tech is an HTML element\n if (this.children_[index + 1].el_) {\n refNode = this.children_[index + 1].el_;\n } else if (isEl(this.children_[index + 1])) {\n refNode = this.children_[index + 1];\n }\n }\n\n this.contentEl().insertBefore(component.el(), refNode);\n } // Return so it can stored on parent object if desired.\n\n\n return component;\n }\n /**\n * Remove a child `Component` from this `Component`s list of children. Also removes\n * the child `Component`s element from this `Component`s element.\n *\n * @param {Component} component\n * The child `Component` to remove.\n */\n ;\n\n _proto.removeChild = function removeChild(component) {\n if (typeof component === 'string') {\n component = this.getChild(component);\n }\n\n if (!component || !this.children_) {\n return;\n }\n\n var childFound = false;\n\n for (var i = this.children_.length - 1; i >= 0; i--) {\n if (this.children_[i] === component) {\n childFound = true;\n this.children_.splice(i, 1);\n break;\n }\n }\n\n if (!childFound) {\n return;\n }\n\n component.parentComponent_ = null;\n this.childIndex_[component.id()] = null;\n this.childNameIndex_[toTitleCase(component.name())] = null;\n this.childNameIndex_[toLowerCase(component.name())] = null;\n var compEl = component.el();\n\n if (compEl && compEl.parentNode === this.contentEl()) {\n this.contentEl().removeChild(component.el());\n }\n }\n /**\n * Add and initialize default child `Component`s based upon options.\n */\n ;\n\n _proto.initChildren = function initChildren() {\n var _this = this;\n\n var children = this.options_.children;\n\n if (children) {\n // `this` is `parent`\n var parentOptions = this.options_;\n\n var handleAdd = function handleAdd(child) {\n var name = child.name;\n var opts = child.opts; // Allow options for children to be set at the parent options\n // e.g. videojs(id, { controlBar: false });\n // instead of videojs(id, { children: { controlBar: false });\n\n if (parentOptions[name] !== undefined) {\n opts = parentOptions[name];\n } // Allow for disabling default components\n // e.g. options['children']['posterImage'] = false\n\n\n if (opts === false) {\n return;\n } // Allow options to be passed as a simple boolean if no configuration\n // is necessary.\n\n\n if (opts === true) {\n opts = {};\n } // We also want to pass the original player options\n // to each component as well so they don't need to\n // reach back into the player for options later.\n\n\n opts.playerOptions = _this.options_.playerOptions; // Create and add the child component.\n // Add a direct reference to the child by name on the parent instance.\n // If two of the same component are used, different names should be supplied\n // for each\n\n var newChild = _this.addChild(name, opts);\n\n if (newChild) {\n _this[name] = newChild;\n }\n }; // Allow for an array of children details to passed in the options\n\n\n var workingChildren;\n var Tech = Component.getComponent('Tech');\n\n if (Array.isArray(children)) {\n workingChildren = children;\n } else {\n workingChildren = Object.keys(children);\n }\n\n workingChildren // children that are in this.options_ but also in workingChildren would\n // give us extra children we do not want. So, we want to filter them out.\n .concat(Object.keys(this.options_).filter(function (child) {\n return !workingChildren.some(function (wchild) {\n if (typeof wchild === 'string') {\n return child === wchild;\n }\n\n return child === wchild.name;\n });\n })).map(function (child) {\n var name;\n var opts;\n\n if (typeof child === 'string') {\n name = child;\n opts = children[name] || _this.options_[name] || {};\n } else {\n name = child.name;\n opts = child;\n }\n\n return {\n name: name,\n opts: opts\n };\n }).filter(function (child) {\n // we have to make sure that child.name isn't in the techOrder since\n // techs are registerd as Components but can't aren't compatible\n // See https://github.com/videojs/video.js/issues/2772\n var c = Component.getComponent(child.opts.componentClass || toTitleCase(child.name));\n return c && !Tech.isTech(c);\n }).forEach(handleAdd);\n }\n }\n /**\n * Builds the default DOM class name. Should be overriden by sub-components.\n *\n * @return {string}\n * The DOM class name for this object.\n *\n * @abstract\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n // Child classes can include a function that does:\n // return 'CLASS NAME' + this._super();\n return '';\n }\n /**\n * Bind a listener to the component's ready state.\n * Different from event listeners in that if the ready event has already happened\n * it will trigger the function immediately.\n *\n * @return {Component}\n * Returns itself; method can be chained.\n */\n ;\n\n _proto.ready = function ready(fn, sync) {\n if (sync === void 0) {\n sync = false;\n }\n\n if (!fn) {\n return;\n }\n\n if (!this.isReady_) {\n this.readyQueue_ = this.readyQueue_ || [];\n this.readyQueue_.push(fn);\n return;\n }\n\n if (sync) {\n fn.call(this);\n } else {\n // Call the function asynchronously by default for consistency\n this.setTimeout(fn, 1);\n }\n }\n /**\n * Trigger all the ready listeners for this `Component`.\n *\n * @fires Component#ready\n */\n ;\n\n _proto.triggerReady = function triggerReady() {\n this.isReady_ = true; // Ensure ready is triggered asynchronously\n\n this.setTimeout(function () {\n var readyQueue = this.readyQueue_; // Reset Ready Queue\n\n this.readyQueue_ = [];\n\n if (readyQueue && readyQueue.length > 0) {\n readyQueue.forEach(function (fn) {\n fn.call(this);\n }, this);\n } // Allow for using event listeners also\n\n /**\n * Triggered when a `Component` is ready.\n *\n * @event Component#ready\n * @type {EventTarget~Event}\n */\n\n\n this.trigger('ready');\n }, 1);\n }\n /**\n * Find a single DOM element matching a `selector`. This can be within the `Component`s\n * `contentEl()` or another custom context.\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelector`.\n *\n * @param {Element|string} [context=this.contentEl()]\n * A DOM element within which to query. Can also be a selector string in\n * which case the first matching element will get used as context. If\n * missing `this.contentEl()` gets used. If `this.contentEl()` returns\n * nothing it falls back to `document`.\n *\n * @return {Element|null}\n * the dom element that was found, or null\n *\n * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n */\n ;\n\n _proto.$ = function $$1(selector, context) {\n return $(selector, context || this.contentEl());\n }\n /**\n * Finds all DOM element matching a `selector`. This can be within the `Component`s\n * `contentEl()` or another custom context.\n *\n * @param {string} selector\n * A valid CSS selector, which will be passed to `querySelectorAll`.\n *\n * @param {Element|string} [context=this.contentEl()]\n * A DOM element within which to query. Can also be a selector string in\n * which case the first matching element will get used as context. If\n * missing `this.contentEl()` gets used. If `this.contentEl()` returns\n * nothing it falls back to `document`.\n *\n * @return {NodeList}\n * a list of dom elements that were found\n *\n * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n */\n ;\n\n _proto.$$ = function $$$1(selector, context) {\n return $$(selector, context || this.contentEl());\n }\n /**\n * Check if a component's element has a CSS class name.\n *\n * @param {string} classToCheck\n * CSS class name to check.\n *\n * @return {boolean}\n * - True if the `Component` has the class.\n * - False if the `Component` does not have the class`\n */\n ;\n\n _proto.hasClass = function hasClass$1(classToCheck) {\n return hasClass(this.el_, classToCheck);\n }\n /**\n * Add a CSS class name to the `Component`s element.\n *\n * @param {string} classToAdd\n * CSS class name to add\n */\n ;\n\n _proto.addClass = function addClass$1(classToAdd) {\n addClass(this.el_, classToAdd);\n }\n /**\n * Remove a CSS class name from the `Component`s element.\n *\n * @param {string} classToRemove\n * CSS class name to remove\n */\n ;\n\n _proto.removeClass = function removeClass$1(classToRemove) {\n removeClass(this.el_, classToRemove);\n }\n /**\n * Add or remove a CSS class name from the component's element.\n * - `classToToggle` gets added when {@link Component#hasClass} would return false.\n * - `classToToggle` gets removed when {@link Component#hasClass} would return true.\n *\n * @param {string} classToToggle\n * The class to add or remove based on (@link Component#hasClass}\n *\n * @param {boolean|Dom~predicate} [predicate]\n * An {@link Dom~predicate} function or a boolean\n */\n ;\n\n _proto.toggleClass = function toggleClass$1(classToToggle, predicate) {\n toggleClass(this.el_, classToToggle, predicate);\n }\n /**\n * Show the `Component`s element if it is hidden by removing the\n * 'vjs-hidden' class name from it.\n */\n ;\n\n _proto.show = function show() {\n this.removeClass('vjs-hidden');\n }\n /**\n * Hide the `Component`s element if it is currently showing by adding the\n * 'vjs-hidden` class name to it.\n */\n ;\n\n _proto.hide = function hide() {\n this.addClass('vjs-hidden');\n }\n /**\n * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'\n * class name to it. Used during fadeIn/fadeOut.\n *\n * @private\n */\n ;\n\n _proto.lockShowing = function lockShowing() {\n this.addClass('vjs-lock-showing');\n }\n /**\n * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'\n * class name from it. Used during fadeIn/fadeOut.\n *\n * @private\n */\n ;\n\n _proto.unlockShowing = function unlockShowing() {\n this.removeClass('vjs-lock-showing');\n }\n /**\n * Get the value of an attribute on the `Component`s element.\n *\n * @param {string} attribute\n * Name of the attribute to get the value from.\n *\n * @return {string|null}\n * - The value of the attribute that was asked for.\n * - Can be an empty string on some browsers if the attribute does not exist\n * or has no value\n * - Most browsers will return null if the attibute does not exist or has\n * no value.\n *\n * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}\n */\n ;\n\n _proto.getAttribute = function getAttribute$1(attribute) {\n return getAttribute(this.el_, attribute);\n }\n /**\n * Set the value of an attribute on the `Component`'s element\n *\n * @param {string} attribute\n * Name of the attribute to set.\n *\n * @param {string} value\n * Value to set the attribute to.\n *\n * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}\n */\n ;\n\n _proto.setAttribute = function setAttribute$1(attribute, value) {\n setAttribute(this.el_, attribute, value);\n }\n /**\n * Remove an attribute from the `Component`s element.\n *\n * @param {string} attribute\n * Name of the attribute to remove.\n *\n * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}\n */\n ;\n\n _proto.removeAttribute = function removeAttribute$1(attribute) {\n removeAttribute(this.el_, attribute);\n }\n /**\n * Get or set the width of the component based upon the CSS styles.\n * See {@link Component#dimension} for more detailed information.\n *\n * @param {number|string} [num]\n * The width that you want to set postfixed with '%', 'px' or nothing.\n *\n * @param {boolean} [skipListeners]\n * Skip the componentresize event trigger\n *\n * @return {number|string}\n * The width when getting, zero if there is no width. Can be a string\n * postpixed with '%' or 'px'.\n */\n ;\n\n _proto.width = function width(num, skipListeners) {\n return this.dimension('width', num, skipListeners);\n }\n /**\n * Get or set the height of the component based upon the CSS styles.\n * See {@link Component#dimension} for more detailed information.\n *\n * @param {number|string} [num]\n * The height that you want to set postfixed with '%', 'px' or nothing.\n *\n * @param {boolean} [skipListeners]\n * Skip the componentresize event trigger\n *\n * @return {number|string}\n * The width when getting, zero if there is no width. Can be a string\n * postpixed with '%' or 'px'.\n */\n ;\n\n _proto.height = function height(num, skipListeners) {\n return this.dimension('height', num, skipListeners);\n }\n /**\n * Set both the width and height of the `Component` element at the same time.\n *\n * @param {number|string} width\n * Width to set the `Component`s element to.\n *\n * @param {number|string} height\n * Height to set the `Component`s element to.\n */\n ;\n\n _proto.dimensions = function dimensions(width, height) {\n // Skip componentresize listeners on width for optimization\n this.width(width, true);\n this.height(height);\n }\n /**\n * Get or set width or height of the `Component` element. This is the shared code\n * for the {@link Component#width} and {@link Component#height}.\n *\n * Things to know:\n * - If the width or height in an number this will return the number postfixed with 'px'.\n * - If the width/height is a percent this will return the percent postfixed with '%'\n * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function\n * defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.\n * See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}\n * for more information\n * - If you want the computed style of the component, use {@link Component#currentWidth}\n * and {@link {Component#currentHeight}\n *\n * @fires Component#componentresize\n *\n * @param {string} widthOrHeight\n 8 'width' or 'height'\n *\n * @param {number|string} [num]\n 8 New dimension\n *\n * @param {boolean} [skipListeners]\n * Skip componentresize event trigger\n *\n * @return {number}\n * The dimension when getting or 0 if unset\n */\n ;\n\n _proto.dimension = function dimension(widthOrHeight, num, skipListeners) {\n if (num !== undefined) {\n // Set to zero if null or literally NaN (NaN !== NaN)\n if (num === null || num !== num) {\n num = 0;\n } // Check if using css width/height (% or px) and adjust\n\n\n if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {\n this.el_.style[widthOrHeight] = num;\n } else if (num === 'auto') {\n this.el_.style[widthOrHeight] = '';\n } else {\n this.el_.style[widthOrHeight] = num + 'px';\n } // skipListeners allows us to avoid triggering the resize event when setting both width and height\n\n\n if (!skipListeners) {\n /**\n * Triggered when a component is resized.\n *\n * @event Component#componentresize\n * @type {EventTarget~Event}\n */\n this.trigger('componentresize');\n }\n\n return;\n } // Not setting a value, so getting it\n // Make sure element exists\n\n\n if (!this.el_) {\n return 0;\n } // Get dimension value from style\n\n\n var val = this.el_.style[widthOrHeight];\n var pxIndex = val.indexOf('px');\n\n if (pxIndex !== -1) {\n // Return the pixel value with no 'px'\n return parseInt(val.slice(0, pxIndex), 10);\n } // No px so using % or no style was set, so falling back to offsetWidth/height\n // If component has display:none, offset will return 0\n // TODO: handle display:none and no dimension style using px\n\n\n return parseInt(this.el_['offset' + toTitleCase(widthOrHeight)], 10);\n }\n /**\n * Get the computed width or the height of the component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @param {string} widthOrHeight\n * A string containing 'width' or 'height'. Whichever one you want to get.\n *\n * @return {number}\n * The dimension that gets asked for or 0 if nothing was set\n * for that dimension.\n */\n ;\n\n _proto.currentDimension = function currentDimension(widthOrHeight) {\n var computedWidthOrHeight = 0;\n\n if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {\n throw new Error('currentDimension only accepts width or height value');\n }\n\n computedWidthOrHeight = computedStyle(this.el_, widthOrHeight); // remove 'px' from variable and parse as integer\n\n computedWidthOrHeight = parseFloat(computedWidthOrHeight); // if the computed value is still 0, it's possible that the browser is lying\n // and we want to check the offset values.\n // This code also runs wherever getComputedStyle doesn't exist.\n\n if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) {\n var rule = \"offset\" + toTitleCase(widthOrHeight);\n computedWidthOrHeight = this.el_[rule];\n }\n\n return computedWidthOrHeight;\n }\n /**\n * An object that contains width and height values of the `Component`s\n * computed style. Uses `window.getComputedStyle`.\n *\n * @typedef {Object} Component~DimensionObject\n *\n * @property {number} width\n * The width of the `Component`s computed style.\n *\n * @property {number} height\n * The height of the `Component`s computed style.\n */\n\n /**\n * Get an object that contains computed width and height values of the\n * component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @return {Component~DimensionObject}\n * The computed dimensions of the component's element.\n */\n ;\n\n _proto.currentDimensions = function currentDimensions() {\n return {\n width: this.currentDimension('width'),\n height: this.currentDimension('height')\n };\n }\n /**\n * Get the computed width of the component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @return {number}\n * The computed width of the component's element.\n */\n ;\n\n _proto.currentWidth = function currentWidth() {\n return this.currentDimension('width');\n }\n /**\n * Get the computed height of the component's element.\n *\n * Uses `window.getComputedStyle`.\n *\n * @return {number}\n * The computed height of the component's element.\n */\n ;\n\n _proto.currentHeight = function currentHeight() {\n return this.currentDimension('height');\n }\n /**\n * Set the focus to this component\n */\n ;\n\n _proto.focus = function focus() {\n this.el_.focus();\n }\n /**\n * Remove the focus from this component\n */\n ;\n\n _proto.blur = function blur() {\n this.el_.blur();\n }\n /**\n * When this Component receives a `keydown` event which it does not process,\n * it passes the event to the Player for handling.\n *\n * @param {EventTarget~Event} event\n * The `keydown` event that caused this function to be called.\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n if (this.player_) {\n // We only stop propagation here because we want unhandled events to fall\n // back to the browser.\n event.stopPropagation();\n this.player_.handleKeyDown(event);\n }\n }\n /**\n * Many components used to have a `handleKeyPress` method, which was poorly\n * named because it listened to a `keydown` event. This method name now\n * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`\n * will not see their method calls stop working.\n *\n * @param {EventTarget~Event} event\n * The event that caused this function to be called.\n */\n ;\n\n _proto.handleKeyPress = function handleKeyPress(event) {\n this.handleKeyDown(event);\n }\n /**\n * Emit a 'tap' events when touch event support gets detected. This gets used to\n * support toggling the controls through a tap on the video. They get enabled\n * because every sub-component would have extra overhead otherwise.\n *\n * @private\n * @fires Component#tap\n * @listens Component#touchstart\n * @listens Component#touchmove\n * @listens Component#touchleave\n * @listens Component#touchcancel\n * @listens Component#touchend\n */\n ;\n\n _proto.emitTapEvents = function emitTapEvents() {\n // Track the start time so we can determine how long the touch lasted\n var touchStart = 0;\n var firstTouch = null; // Maximum movement allowed during a touch event to still be considered a tap\n // Other popular libs use anywhere from 2 (hammer.js) to 15,\n // so 10 seems like a nice, round number.\n\n var tapMovementThreshold = 10; // The maximum length a touch can be while still being considered a tap\n\n var touchTimeThreshold = 200;\n var couldBeTap;\n this.on('touchstart', function (event) {\n // If more than one finger, don't consider treating this as a click\n if (event.touches.length === 1) {\n // Copy pageX/pageY from the object\n firstTouch = {\n pageX: event.touches[0].pageX,\n pageY: event.touches[0].pageY\n }; // Record start time so we can detect a tap vs. \"touch and hold\"\n\n touchStart = window$1.performance.now(); // Reset couldBeTap tracking\n\n couldBeTap = true;\n }\n });\n this.on('touchmove', function (event) {\n // If more than one finger, don't consider treating this as a click\n if (event.touches.length > 1) {\n couldBeTap = false;\n } else if (firstTouch) {\n // Some devices will throw touchmoves for all but the slightest of taps.\n // So, if we moved only a small distance, this could still be a tap\n var xdiff = event.touches[0].pageX - firstTouch.pageX;\n var ydiff = event.touches[0].pageY - firstTouch.pageY;\n var touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);\n\n if (touchDistance > tapMovementThreshold) {\n couldBeTap = false;\n }\n }\n });\n\n var noTap = function noTap() {\n couldBeTap = false;\n }; // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s\n\n\n this.on('touchleave', noTap);\n this.on('touchcancel', noTap); // When the touch ends, measure how long it took and trigger the appropriate\n // event\n\n this.on('touchend', function (event) {\n firstTouch = null; // Proceed only if the touchmove/leave/cancel event didn't happen\n\n if (couldBeTap === true) {\n // Measure how long the touch lasted\n var touchTime = window$1.performance.now() - touchStart; // Make sure the touch was less than the threshold to be considered a tap\n\n if (touchTime < touchTimeThreshold) {\n // Don't let browser turn this into a click\n event.preventDefault();\n /**\n * Triggered when a `Component` is tapped.\n *\n * @event Component#tap\n * @type {EventTarget~Event}\n */\n\n this.trigger('tap'); // It may be good to copy the touchend event object and change the\n // type to tap, if the other event properties aren't exact after\n // Events.fixEvent runs (e.g. event.target)\n }\n }\n });\n }\n /**\n * This function reports user activity whenever touch events happen. This can get\n * turned off by any sub-components that wants touch events to act another way.\n *\n * Report user touch activity when touch events occur. User activity gets used to\n * determine when controls should show/hide. It is simple when it comes to mouse\n * events, because any mouse event should show the controls. So we capture mouse\n * events that bubble up to the player and report activity when that happens.\n * With touch events it isn't as easy as `touchstart` and `touchend` toggle player\n * controls. So touch events can't help us at the player level either.\n *\n * User activity gets checked asynchronously. So what could happen is a tap event\n * on the video turns the controls off. Then the `touchend` event bubbles up to\n * the player. Which, if it reported user activity, would turn the controls right\n * back on. We also don't want to completely block touch events from bubbling up.\n * Furthermore a `touchmove` event and anything other than a tap, should not turn\n * controls back on.\n *\n * @listens Component#touchstart\n * @listens Component#touchmove\n * @listens Component#touchend\n * @listens Component#touchcancel\n */\n ;\n\n _proto.enableTouchActivity = function enableTouchActivity() {\n // Don't continue if the root player doesn't support reporting user activity\n if (!this.player() || !this.player().reportUserActivity) {\n return;\n } // listener for reporting that the user is active\n\n\n var report = bind(this.player(), this.player().reportUserActivity);\n var touchHolding;\n this.on('touchstart', function () {\n report(); // For as long as the they are touching the device or have their mouse down,\n // we consider them active even if they're not moving their finger or mouse.\n // So we want to continue to update that they are active\n\n this.clearInterval(touchHolding); // report at the same interval as activityCheck\n\n touchHolding = this.setInterval(report, 250);\n });\n\n var touchEnd = function touchEnd(event) {\n report(); // stop the interval that maintains activity if the touch is holding\n\n this.clearInterval(touchHolding);\n };\n\n this.on('touchmove', report);\n this.on('touchend', touchEnd);\n this.on('touchcancel', touchEnd);\n }\n /**\n * A callback that has no parameters and is bound into `Component`s context.\n *\n * @callback Component~GenericCallback\n * @this Component\n */\n\n /**\n * Creates a function that runs after an `x` millisecond timeout. This function is a\n * wrapper around `window.setTimeout`. There are a few reasons to use this one\n * instead though:\n * 1. It gets cleared via {@link Component#clearTimeout} when\n * {@link Component#dispose} gets called.\n * 2. The function callback will gets turned into a {@link Component~GenericCallback}\n *\n * > Note: You can't use `window.clearTimeout` on the id returned by this function. This\n * will cause its dispose listener not to get cleaned up! Please use\n * {@link Component#clearTimeout} or {@link Component#dispose} instead.\n *\n * @param {Component~GenericCallback} fn\n * The function that will be run after `timeout`.\n *\n * @param {number} timeout\n * Timeout in milliseconds to delay before executing the specified function.\n *\n * @return {number}\n * Returns a timeout ID that gets used to identify the timeout. It can also\n * get used in {@link Component#clearTimeout} to clear the timeout that\n * was set.\n *\n * @listens Component#dispose\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}\n */\n ;\n\n _proto.setTimeout = function setTimeout(fn, timeout) {\n var _this2 = this;\n\n // declare as variables so they are properly available in timeout function\n // eslint-disable-next-line\n var timeoutId;\n fn = bind(this, fn);\n this.clearTimersOnDispose_();\n timeoutId = window$1.setTimeout(function () {\n if (_this2.setTimeoutIds_.has(timeoutId)) {\n _this2.setTimeoutIds_[\"delete\"](timeoutId);\n }\n\n fn();\n }, timeout);\n this.setTimeoutIds_.add(timeoutId);\n return timeoutId;\n }\n /**\n * Clears a timeout that gets created via `window.setTimeout` or\n * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}\n * use this function instead of `window.clearTimout`. If you don't your dispose\n * listener will not get cleaned up until {@link Component#dispose}!\n *\n * @param {number} timeoutId\n * The id of the timeout to clear. The return value of\n * {@link Component#setTimeout} or `window.setTimeout`.\n *\n * @return {number}\n * Returns the timeout id that was cleared.\n *\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}\n */\n ;\n\n _proto.clearTimeout = function clearTimeout(timeoutId) {\n if (this.setTimeoutIds_.has(timeoutId)) {\n this.setTimeoutIds_[\"delete\"](timeoutId);\n window$1.clearTimeout(timeoutId);\n }\n\n return timeoutId;\n }\n /**\n * Creates a function that gets run every `x` milliseconds. This function is a wrapper\n * around `window.setInterval`. There are a few reasons to use this one instead though.\n * 1. It gets cleared via {@link Component#clearInterval} when\n * {@link Component#dispose} gets called.\n * 2. The function callback will be a {@link Component~GenericCallback}\n *\n * @param {Component~GenericCallback} fn\n * The function to run every `x` seconds.\n *\n * @param {number} interval\n * Execute the specified function every `x` milliseconds.\n *\n * @return {number}\n * Returns an id that can be used to identify the interval. It can also be be used in\n * {@link Component#clearInterval} to clear the interval.\n *\n * @listens Component#dispose\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}\n */\n ;\n\n _proto.setInterval = function setInterval(fn, interval) {\n fn = bind(this, fn);\n this.clearTimersOnDispose_();\n var intervalId = window$1.setInterval(fn, interval);\n this.setIntervalIds_.add(intervalId);\n return intervalId;\n }\n /**\n * Clears an interval that gets created via `window.setInterval` or\n * {@link Component#setInterval}. If you set an inteval via {@link Component#setInterval}\n * use this function instead of `window.clearInterval`. If you don't your dispose\n * listener will not get cleaned up until {@link Component#dispose}!\n *\n * @param {number} intervalId\n * The id of the interval to clear. The return value of\n * {@link Component#setInterval} or `window.setInterval`.\n *\n * @return {number}\n * Returns the interval id that was cleared.\n *\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}\n */\n ;\n\n _proto.clearInterval = function clearInterval(intervalId) {\n if (this.setIntervalIds_.has(intervalId)) {\n this.setIntervalIds_[\"delete\"](intervalId);\n window$1.clearInterval(intervalId);\n }\n\n return intervalId;\n }\n /**\n * Queues up a callback to be passed to requestAnimationFrame (rAF), but\n * with a few extra bonuses:\n *\n * - Supports browsers that do not support rAF by falling back to\n * {@link Component#setTimeout}.\n *\n * - The callback is turned into a {@link Component~GenericCallback} (i.e.\n * bound to the component).\n *\n * - Automatic cancellation of the rAF callback is handled if the component\n * is disposed before it is called.\n *\n * @param {Component~GenericCallback} fn\n * A function that will be bound to this component and executed just\n * before the browser's next repaint.\n *\n * @return {number}\n * Returns an rAF ID that gets used to identify the timeout. It can\n * also be used in {@link Component#cancelAnimationFrame} to cancel\n * the animation frame callback.\n *\n * @listens Component#dispose\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}\n */\n ;\n\n _proto.requestAnimationFrame = function requestAnimationFrame(fn) {\n var _this3 = this;\n\n // Fall back to using a timer.\n if (!this.supportsRaf_) {\n return this.setTimeout(fn, 1000 / 60);\n }\n\n this.clearTimersOnDispose_(); // declare as variables so they are properly available in rAF function\n // eslint-disable-next-line\n\n var id;\n fn = bind(this, fn);\n id = window$1.requestAnimationFrame(function () {\n if (_this3.rafIds_.has(id)) {\n _this3.rafIds_[\"delete\"](id);\n }\n\n fn();\n });\n this.rafIds_.add(id);\n return id;\n }\n /**\n * Cancels a queued callback passed to {@link Component#requestAnimationFrame}\n * (rAF).\n *\n * If you queue an rAF callback via {@link Component#requestAnimationFrame},\n * use this function instead of `window.cancelAnimationFrame`. If you don't,\n * your dispose listener will not get cleaned up until {@link Component#dispose}!\n *\n * @param {number} id\n * The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.\n *\n * @return {number}\n * Returns the rAF ID that was cleared.\n *\n * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}\n */\n ;\n\n _proto.cancelAnimationFrame = function cancelAnimationFrame(id) {\n // Fall back to using a timer.\n if (!this.supportsRaf_) {\n return this.clearTimeout(id);\n }\n\n if (this.rafIds_.has(id)) {\n this.rafIds_[\"delete\"](id);\n window$1.cancelAnimationFrame(id);\n }\n\n return id;\n }\n /**\n * A function to setup `requestAnimationFrame`, `setTimeout`,\n * and `setInterval`, clearing on dispose.\n *\n * > Previously each timer added and removed dispose listeners on it's own.\n * For better performance it was decided to batch them all, and use `Set`s\n * to track outstanding timer ids.\n *\n * @private\n */\n ;\n\n _proto.clearTimersOnDispose_ = function clearTimersOnDispose_() {\n var _this4 = this;\n\n if (this.clearingTimersOnDispose_) {\n return;\n }\n\n this.clearingTimersOnDispose_ = true;\n this.one('dispose', function () {\n [['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(function (_ref) {\n var idName = _ref[0],\n cancelName = _ref[1];\n\n _this4[idName].forEach(_this4[cancelName], _this4);\n });\n _this4.clearingTimersOnDispose_ = false;\n });\n }\n /**\n * Register a `Component` with `videojs` given the name and the component.\n *\n * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s\n * should be registered using {@link Tech.registerTech} or\n * {@link videojs:videojs.registerTech}.\n *\n * > NOTE: This function can also be seen on videojs as\n * {@link videojs:videojs.registerComponent}.\n *\n * @param {string} name\n * The name of the `Component` to register.\n *\n * @param {Component} ComponentToRegister\n * The `Component` class to register.\n *\n * @return {Component}\n * The `Component` that was registered.\n */\n ;\n\n Component.registerComponent = function registerComponent(name, ComponentToRegister) {\n if (typeof name !== 'string' || !name) {\n throw new Error(\"Illegal component name, \\\"\" + name + \"\\\"; must be a non-empty string.\");\n }\n\n var Tech = Component.getComponent('Tech'); // We need to make sure this check is only done if Tech has been registered.\n\n var isTech = Tech && Tech.isTech(ComponentToRegister);\n var isComp = Component === ComponentToRegister || Component.prototype.isPrototypeOf(ComponentToRegister.prototype);\n\n if (isTech || !isComp) {\n var reason;\n\n if (isTech) {\n reason = 'techs must be registered using Tech.registerTech()';\n } else {\n reason = 'must be a Component subclass';\n }\n\n throw new Error(\"Illegal component, \\\"\" + name + \"\\\"; \" + reason + \".\");\n }\n\n name = toTitleCase(name);\n\n if (!Component.components_) {\n Component.components_ = {};\n }\n\n var Player = Component.getComponent('Player');\n\n if (name === 'Player' && Player && Player.players) {\n var players = Player.players;\n var playerNames = Object.keys(players); // If we have players that were disposed, then their name will still be\n // in Players.players. So, we must loop through and verify that the value\n // for each item is not null. This allows registration of the Player component\n // after all players have been disposed or before any were created.\n\n if (players && playerNames.length > 0 && playerNames.map(function (pname) {\n return players[pname];\n }).every(Boolean)) {\n throw new Error('Can not register Player component after player has been created.');\n }\n }\n\n Component.components_[name] = ComponentToRegister;\n Component.components_[toLowerCase(name)] = ComponentToRegister;\n return ComponentToRegister;\n }\n /**\n * Get a `Component` based on the name it was registered with.\n *\n * @param {string} name\n * The Name of the component to get.\n *\n * @return {Component}\n * The `Component` that got registered under the given name.\n *\n * @deprecated In `videojs` 6 this will not return `Component`s that were not\n * registered using {@link Component.registerComponent}. Currently we\n * check the global `videojs` object for a `Component` name and\n * return that if it exists.\n */\n ;\n\n Component.getComponent = function getComponent(name) {\n if (!name || !Component.components_) {\n return;\n }\n\n return Component.components_[name];\n };\n\n return Component;\n}();\n/**\n * Whether or not this component supports `requestAnimationFrame`.\n *\n * This is exposed primarily for testing purposes.\n *\n * @private\n * @type {Boolean}\n */\n\n\nComponent.prototype.supportsRaf_ = typeof window$1.requestAnimationFrame === 'function' && typeof window$1.cancelAnimationFrame === 'function';\nComponent.registerComponent('Component', Component);\n\n/**\n * @file browser.js\n * @module browser\n */\nvar USER_AGENT = window$1.navigator && window$1.navigator.userAgent || '';\nvar webkitVersionMap = /AppleWebKit\\/([\\d.]+)/i.exec(USER_AGENT);\nvar appleWebkitVersion = webkitVersionMap ? parseFloat(webkitVersionMap.pop()) : null;\n/**\n * Whether or not this device is an iPod.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_IPOD = /iPod/i.test(USER_AGENT);\n/**\n * The detected iOS version - or `null`.\n *\n * @static\n * @const\n * @type {string|null}\n */\n\nvar IOS_VERSION = function () {\n var match = USER_AGENT.match(/OS (\\d+)_/i);\n\n if (match && match[1]) {\n return match[1];\n }\n\n return null;\n}();\n/**\n * Whether or not this is an Android device.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_ANDROID = /Android/i.test(USER_AGENT);\n/**\n * The detected Android version - or `null`.\n *\n * @static\n * @const\n * @type {number|string|null}\n */\n\nvar ANDROID_VERSION = function () {\n // This matches Android Major.Minor.Patch versions\n // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned\n var match = USER_AGENT.match(/Android (\\d+)(?:\\.(\\d+))?(?:\\.(\\d+))*/i);\n\n if (!match) {\n return null;\n }\n\n var major = match[1] && parseFloat(match[1]);\n var minor = match[2] && parseFloat(match[2]);\n\n if (major && minor) {\n return parseFloat(match[1] + '.' + match[2]);\n } else if (major) {\n return major;\n }\n\n return null;\n}();\n/**\n * Whether or not this is a native Android browser.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_NATIVE_ANDROID = IS_ANDROID && ANDROID_VERSION < 5 && appleWebkitVersion < 537;\n/**\n * Whether or not this is Mozilla Firefox.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_FIREFOX = /Firefox/i.test(USER_AGENT);\n/**\n * Whether or not this is Microsoft Edge.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_EDGE = /Edg/i.test(USER_AGENT);\n/**\n * Whether or not this is Google Chrome.\n *\n * This will also be `true` for Chrome on iOS, which will have different support\n * as it is actually Safari under the hood.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_CHROME = !IS_EDGE && (/Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT));\n/**\n * The detected Google Chrome version - or `null`.\n *\n * @static\n * @const\n * @type {number|null}\n */\n\nvar CHROME_VERSION = function () {\n var match = USER_AGENT.match(/(Chrome|CriOS)\\/(\\d+)/);\n\n if (match && match[2]) {\n return parseFloat(match[2]);\n }\n\n return null;\n}();\n/**\n * The detected Internet Explorer version - or `null`.\n *\n * @static\n * @const\n * @type {number|null}\n */\n\nvar IE_VERSION = function () {\n var result = /MSIE\\s(\\d+)\\.\\d/.exec(USER_AGENT);\n var version = result && parseFloat(result[1]);\n\n if (!version && /Trident\\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {\n // IE 11 has a different user agent string than other IE versions\n version = 11.0;\n }\n\n return version;\n}();\n/**\n * Whether or not this is desktop Safari.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE;\n/**\n * Whether or not this is a Windows machine.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_WINDOWS = /Windows/i.test(USER_AGENT);\n/**\n * Whether or not this device is touch-enabled.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar TOUCH_ENABLED = isReal() && ('ontouchstart' in window$1 || window$1.navigator.maxTouchPoints || window$1.DocumentTouch && window$1.document instanceof window$1.DocumentTouch);\n/**\n * Whether or not this device is an iPad.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);\n/**\n * Whether or not this device is an iPhone.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n// The Facebook app's UIWebView identifies as both an iPhone and iPad, so\n// to identify iPhones, we need to exclude iPads.\n// http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/\n\nvar IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;\n/**\n * Whether or not this is an iOS device.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;\n/**\n * Whether or not this is any flavor of Safari - including iOS.\n *\n * @static\n * @const\n * @type {Boolean}\n */\n\nvar IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;\n\nvar browser = /*#__PURE__*/Object.freeze({\n __proto__: null,\n IS_IPOD: IS_IPOD,\n IOS_VERSION: IOS_VERSION,\n IS_ANDROID: IS_ANDROID,\n ANDROID_VERSION: ANDROID_VERSION,\n IS_NATIVE_ANDROID: IS_NATIVE_ANDROID,\n IS_FIREFOX: IS_FIREFOX,\n IS_EDGE: IS_EDGE,\n IS_CHROME: IS_CHROME,\n CHROME_VERSION: CHROME_VERSION,\n IE_VERSION: IE_VERSION,\n IS_SAFARI: IS_SAFARI,\n IS_WINDOWS: IS_WINDOWS,\n TOUCH_ENABLED: TOUCH_ENABLED,\n IS_IPAD: IS_IPAD,\n IS_IPHONE: IS_IPHONE,\n IS_IOS: IS_IOS,\n IS_ANY_SAFARI: IS_ANY_SAFARI\n});\n\n/**\n * @file time-ranges.js\n * @module time-ranges\n */\n\n/**\n * Returns the time for the specified index at the start or end\n * of a TimeRange object.\n *\n * @typedef {Function} TimeRangeIndex\n *\n * @param {number} [index=0]\n * The range number to return the time for.\n *\n * @return {number}\n * The time offset at the specified index.\n *\n * @deprecated The index argument must be provided.\n * In the future, leaving it out will throw an error.\n */\n\n/**\n * An object that contains ranges of time.\n *\n * @typedef {Object} TimeRange\n *\n * @property {number} length\n * The number of time ranges represented by this object.\n *\n * @property {module:time-ranges~TimeRangeIndex} start\n * Returns the time offset at which a specified time range begins.\n *\n * @property {module:time-ranges~TimeRangeIndex} end\n * Returns the time offset at which a specified time range ends.\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges\n */\n\n/**\n * Check if any of the time ranges are over the maximum index.\n *\n * @private\n * @param {string} fnName\n * The function name to use for logging\n *\n * @param {number} index\n * The index to check\n *\n * @param {number} maxIndex\n * The maximum possible index\n *\n * @throws {Error} if the timeRanges provided are over the maxIndex\n */\nfunction rangeCheck(fnName, index, maxIndex) {\n if (typeof index !== 'number' || index < 0 || index > maxIndex) {\n throw new Error(\"Failed to execute '\" + fnName + \"' on 'TimeRanges': The index provided (\" + index + \") is non-numeric or out of bounds (0-\" + maxIndex + \").\");\n }\n}\n/**\n * Get the time for the specified index at the start or end\n * of a TimeRange object.\n *\n * @private\n * @param {string} fnName\n * The function name to use for logging\n *\n * @param {string} valueIndex\n * The property that should be used to get the time. should be\n * 'start' or 'end'\n *\n * @param {Array} ranges\n * An array of time ranges\n *\n * @param {Array} [rangeIndex=0]\n * The index to start the search at\n *\n * @return {number}\n * The time that offset at the specified index.\n *\n * @deprecated rangeIndex must be set to a value, in the future this will throw an error.\n * @throws {Error} if rangeIndex is more than the length of ranges\n */\n\n\nfunction getRange(fnName, valueIndex, ranges, rangeIndex) {\n rangeCheck(fnName, rangeIndex, ranges.length - 1);\n return ranges[rangeIndex][valueIndex];\n}\n/**\n * Create a time range object given ranges of time.\n *\n * @private\n * @param {Array} [ranges]\n * An array of time ranges.\n */\n\n\nfunction createTimeRangesObj(ranges) {\n if (ranges === undefined || ranges.length === 0) {\n return {\n length: 0,\n start: function start() {\n throw new Error('This TimeRanges object is empty');\n },\n end: function end() {\n throw new Error('This TimeRanges object is empty');\n }\n };\n }\n\n return {\n length: ranges.length,\n start: getRange.bind(null, 'start', 0, ranges),\n end: getRange.bind(null, 'end', 1, ranges)\n };\n}\n/**\n * Create a `TimeRange` object which mimics an\n * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.\n *\n * @param {number|Array[]} start\n * The start of a single range (a number) or an array of ranges (an\n * array of arrays of two numbers each).\n *\n * @param {number} end\n * The end of a single range. Cannot be used with the array form of\n * the `start` argument.\n */\n\n\nfunction createTimeRanges(start, end) {\n if (Array.isArray(start)) {\n return createTimeRangesObj(start);\n } else if (start === undefined || end === undefined) {\n return createTimeRangesObj();\n }\n\n return createTimeRangesObj([[start, end]]);\n}\n\n/**\n * @file buffer.js\n * @module buffer\n */\n/**\n * Compute the percentage of the media that has been buffered.\n *\n * @param {TimeRange} buffered\n * The current `TimeRange` object representing buffered time ranges\n *\n * @param {number} duration\n * Total duration of the media\n *\n * @return {number}\n * Percent buffered of the total duration in decimal form.\n */\n\nfunction bufferedPercent(buffered, duration) {\n var bufferedDuration = 0;\n var start;\n var end;\n\n if (!duration) {\n return 0;\n }\n\n if (!buffered || !buffered.length) {\n buffered = createTimeRanges(0, 0);\n }\n\n for (var i = 0; i < buffered.length; i++) {\n start = buffered.start(i);\n end = buffered.end(i); // buffered end can be bigger than duration by a very small fraction\n\n if (end > duration) {\n end = duration;\n }\n\n bufferedDuration += end - start;\n }\n\n return bufferedDuration / duration;\n}\n\n/**\n * @file fullscreen-api.js\n * @module fullscreen-api\n * @private\n */\n/**\n * Store the browser-specific methods for the fullscreen API.\n *\n * @type {Object}\n * @see [Specification]{@link https://fullscreen.spec.whatwg.org}\n * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}\n */\n\nvar FullscreenApi = {\n prefixed: true\n}; // browser API methods\n\nvar apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'], // WebKit\n['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen'], // Mozilla\n['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror', '-moz-full-screen'], // Microsoft\n['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError', '-ms-fullscreen']];\nvar specApi = apiMap[0];\nvar browserApi; // determine the supported set of functions\n\nfor (var i = 0; i < apiMap.length; i++) {\n // check for exitFullscreen function\n if (apiMap[i][1] in document) {\n browserApi = apiMap[i];\n break;\n }\n} // map the browser API names to the spec API names\n\n\nif (browserApi) {\n for (var _i = 0; _i < browserApi.length; _i++) {\n FullscreenApi[specApi[_i]] = browserApi[_i];\n }\n\n FullscreenApi.prefixed = browserApi[0] !== specApi[0];\n}\n\n/**\n * @file media-error.js\n */\n/**\n * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.\n *\n * @param {number|string|Object|MediaError} value\n * This can be of multiple types:\n * - number: should be a standard error code\n * - string: an error message (the code will be 0)\n * - Object: arbitrary properties\n * - `MediaError` (native): used to populate a video.js `MediaError` object\n * - `MediaError` (video.js): will return itself if it's already a\n * video.js `MediaError` object.\n *\n * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}\n * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}\n *\n * @class MediaError\n */\n\nfunction MediaError(value) {\n // Allow redundant calls to this constructor to avoid having `instanceof`\n // checks peppered around the code.\n if (value instanceof MediaError) {\n return value;\n }\n\n if (typeof value === 'number') {\n this.code = value;\n } else if (typeof value === 'string') {\n // default code is zero, so this is a custom error\n this.message = value;\n } else if (isObject(value)) {\n // We assign the `code` property manually because native `MediaError` objects\n // do not expose it as an own/enumerable property of the object.\n if (typeof value.code === 'number') {\n this.code = value.code;\n }\n\n assign(this, value);\n }\n\n if (!this.message) {\n this.message = MediaError.defaultMessages[this.code] || '';\n }\n}\n/**\n * The error code that refers two one of the defined `MediaError` types\n *\n * @type {Number}\n */\n\n\nMediaError.prototype.code = 0;\n/**\n * An optional message that to show with the error. Message is not part of the HTML5\n * video spec but allows for more informative custom errors.\n *\n * @type {String}\n */\n\nMediaError.prototype.message = '';\n/**\n * An optional status code that can be set by plugins to allow even more detail about\n * the error. For example a plugin might provide a specific HTTP status code and an\n * error message for that code. Then when the plugin gets that error this class will\n * know how to display an error message for it. This allows a custom message to show\n * up on the `Player` error overlay.\n *\n * @type {Array}\n */\n\nMediaError.prototype.status = null;\n/**\n * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the\n * specification listed under {@link MediaError} for more information.\n *\n * @enum {array}\n * @readonly\n * @property {string} 0 - MEDIA_ERR_CUSTOM\n * @property {string} 1 - MEDIA_ERR_ABORTED\n * @property {string} 2 - MEDIA_ERR_NETWORK\n * @property {string} 3 - MEDIA_ERR_DECODE\n * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED\n * @property {string} 5 - MEDIA_ERR_ENCRYPTED\n */\n\nMediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];\n/**\n * The default `MediaError` messages based on the {@link MediaError.errorTypes}.\n *\n * @type {Array}\n * @constant\n */\n\nMediaError.defaultMessages = {\n 1: 'You aborted the media playback',\n 2: 'A network error caused the media download to fail part-way.',\n 3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',\n 4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',\n 5: 'The media is encrypted and we do not have the keys to decrypt it.'\n}; // Add types as properties on MediaError\n// e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;\n\nfor (var errNum = 0; errNum < MediaError.errorTypes.length; errNum++) {\n MediaError[MediaError.errorTypes[errNum]] = errNum; // values should be accessible on both the class and instance\n\n MediaError.prototype[MediaError.errorTypes[errNum]] = errNum;\n} // jsdocs for instance/static members added above\n\n/**\n * Returns whether an object is `Promise`-like (i.e. has a `then` method).\n *\n * @param {Object} value\n * An object that may or may not be `Promise`-like.\n *\n * @return {boolean}\n * Whether or not the object is `Promise`-like.\n */\nfunction isPromise(value) {\n return value !== undefined && value !== null && typeof value.then === 'function';\n}\n/**\n * Silence a Promise-like object.\n *\n * This is useful for avoiding non-harmful, but potentially confusing \"uncaught\n * play promise\" rejection error messages.\n *\n * @param {Object} value\n * An object that may or may not be `Promise`-like.\n */\n\nfunction silencePromise(value) {\n if (isPromise(value)) {\n value.then(null, function (e) {});\n }\n}\n\n/**\n * @file text-track-list-converter.js Utilities for capturing text track state and\n * re-creating tracks based on a capture.\n *\n * @module text-track-list-converter\n */\n\n/**\n * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that\n * represents the {@link TextTrack}'s state.\n *\n * @param {TextTrack} track\n * The text track to query.\n *\n * @return {Object}\n * A serializable javascript representation of the TextTrack.\n * @private\n */\nvar trackToJson_ = function trackToJson_(track) {\n var ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce(function (acc, prop, i) {\n if (track[prop]) {\n acc[prop] = track[prop];\n }\n\n return acc;\n }, {\n cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {\n return {\n startTime: cue.startTime,\n endTime: cue.endTime,\n text: cue.text,\n id: cue.id\n };\n })\n });\n return ret;\n};\n/**\n * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the\n * state of all {@link TextTrack}s currently configured. The return array is compatible with\n * {@link text-track-list-converter:jsonToTextTracks}.\n *\n * @param {Tech} tech\n * The tech object to query\n *\n * @return {Array}\n * A serializable javascript representation of the {@link Tech}s\n * {@link TextTrackList}.\n */\n\n\nvar textTracksToJson = function textTracksToJson(tech) {\n var trackEls = tech.$$('track');\n var trackObjs = Array.prototype.map.call(trackEls, function (t) {\n return t.track;\n });\n var tracks = Array.prototype.map.call(trackEls, function (trackEl) {\n var json = trackToJson_(trackEl.track);\n\n if (trackEl.src) {\n json.src = trackEl.src;\n }\n\n return json;\n });\n return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {\n return trackObjs.indexOf(track) === -1;\n }).map(trackToJson_));\n};\n/**\n * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript\n * object {@link TextTrack} representations.\n *\n * @param {Array} json\n * An array of `TextTrack` representation objects, like those that would be\n * produced by `textTracksToJson`.\n *\n * @param {Tech} tech\n * The `Tech` to create the `TextTrack`s on.\n */\n\n\nvar jsonToTextTracks = function jsonToTextTracks(json, tech) {\n json.forEach(function (track) {\n var addedTrack = tech.addRemoteTextTrack(track).track;\n\n if (!track.src && track.cues) {\n track.cues.forEach(function (cue) {\n return addedTrack.addCue(cue);\n });\n }\n });\n return tech.textTracks();\n};\n\nvar textTrackConverter = {\n textTracksToJson: textTracksToJson,\n jsonToTextTracks: jsonToTextTracks,\n trackToJson_: trackToJson_\n};\n\nvar MODAL_CLASS_NAME = 'vjs-modal-dialog';\n/**\n * The `ModalDialog` displays over the video and its controls, which blocks\n * interaction with the player until it is closed.\n *\n * Modal dialogs include a \"Close\" button and will close when that button\n * is activated - or when ESC is pressed anywhere.\n *\n * @extends Component\n */\n\nvar ModalDialog = /*#__PURE__*/function (_Component) {\n _inheritsLoose(ModalDialog, _Component);\n\n /**\n * Create an instance of this class.\n *\n * @param {Player} player\n * The `Player` that this class should be attached to.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Mixed} [options.content=undefined]\n * Provide customized content for this modal.\n *\n * @param {string} [options.description]\n * A text description for the modal, primarily for accessibility.\n *\n * @param {boolean} [options.fillAlways=false]\n * Normally, modals are automatically filled only the first time\n * they open. This tells the modal to refresh its content\n * every time it opens.\n *\n * @param {string} [options.label]\n * A text label for the modal, primarily for accessibility.\n *\n * @param {boolean} [options.pauseOnOpen=true]\n * If `true`, playback will will be paused if playing when\n * the modal opens, and resumed when it closes.\n *\n * @param {boolean} [options.temporary=true]\n * If `true`, the modal can only be opened once; it will be\n * disposed as soon as it's closed.\n *\n * @param {boolean} [options.uncloseable=false]\n * If `true`, the user will not be able to close the modal\n * through the UI in the normal ways. Programmatic closing is\n * still possible.\n */\n function ModalDialog(player, options) {\n var _this;\n\n _this = _Component.call(this, player, options) || this;\n _this.opened_ = _this.hasBeenOpened_ = _this.hasBeenFilled_ = false;\n\n _this.closeable(!_this.options_.uncloseable);\n\n _this.content(_this.options_.content); // Make sure the contentEl is defined AFTER any children are initialized\n // because we only want the contents of the modal in the contentEl\n // (not the UI elements like the close button).\n\n\n _this.contentEl_ = createEl('div', {\n className: MODAL_CLASS_NAME + \"-content\"\n }, {\n role: 'document'\n });\n _this.descEl_ = createEl('p', {\n className: MODAL_CLASS_NAME + \"-description vjs-control-text\",\n id: _this.el().getAttribute('aria-describedby')\n });\n textContent(_this.descEl_, _this.description());\n\n _this.el_.appendChild(_this.descEl_);\n\n _this.el_.appendChild(_this.contentEl_);\n\n return _this;\n }\n /**\n * Create the `ModalDialog`'s DOM element\n *\n * @return {Element}\n * The DOM element that gets created.\n */\n\n\n var _proto = ModalDialog.prototype;\n\n _proto.createEl = function createEl() {\n return _Component.prototype.createEl.call(this, 'div', {\n className: this.buildCSSClass(),\n tabIndex: -1\n }, {\n 'aria-describedby': this.id() + \"_description\",\n 'aria-hidden': 'true',\n 'aria-label': this.label(),\n 'role': 'dialog'\n });\n };\n\n _proto.dispose = function dispose() {\n this.contentEl_ = null;\n this.descEl_ = null;\n this.previouslyActiveEl_ = null;\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Builds the default DOM `className`.\n *\n * @return {string}\n * The DOM `className` for this object.\n */\n ;\n\n _proto.buildCSSClass = function buildCSSClass() {\n return MODAL_CLASS_NAME + \" vjs-hidden \" + _Component.prototype.buildCSSClass.call(this);\n }\n /**\n * Returns the label string for this modal. Primarily used for accessibility.\n *\n * @return {string}\n * the localized or raw label of this modal.\n */\n ;\n\n _proto.label = function label() {\n return this.localize(this.options_.label || 'Modal Window');\n }\n /**\n * Returns the description string for this modal. Primarily used for\n * accessibility.\n *\n * @return {string}\n * The localized or raw description of this modal.\n */\n ;\n\n _proto.description = function description() {\n var desc = this.options_.description || this.localize('This is a modal window.'); // Append a universal closeability message if the modal is closeable.\n\n if (this.closeable()) {\n desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');\n }\n\n return desc;\n }\n /**\n * Opens the modal.\n *\n * @fires ModalDialog#beforemodalopen\n * @fires ModalDialog#modalopen\n */\n ;\n\n _proto.open = function open() {\n if (!this.opened_) {\n var player = this.player();\n /**\n * Fired just before a `ModalDialog` is opened.\n *\n * @event ModalDialog#beforemodalopen\n * @type {EventTarget~Event}\n */\n\n this.trigger('beforemodalopen');\n this.opened_ = true; // Fill content if the modal has never opened before and\n // never been filled.\n\n if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {\n this.fill();\n } // If the player was playing, pause it and take note of its previously\n // playing state.\n\n\n this.wasPlaying_ = !player.paused();\n\n if (this.options_.pauseOnOpen && this.wasPlaying_) {\n player.pause();\n }\n\n this.on('keydown', this.handleKeyDown); // Hide controls and note if they were enabled.\n\n this.hadControls_ = player.controls();\n player.controls(false);\n this.show();\n this.conditionalFocus_();\n this.el().setAttribute('aria-hidden', 'false');\n /**\n * Fired just after a `ModalDialog` is opened.\n *\n * @event ModalDialog#modalopen\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalopen');\n this.hasBeenOpened_ = true;\n }\n }\n /**\n * If the `ModalDialog` is currently open or closed.\n *\n * @param {boolean} [value]\n * If given, it will open (`true`) or close (`false`) the modal.\n *\n * @return {boolean}\n * the current open state of the modaldialog\n */\n ;\n\n _proto.opened = function opened(value) {\n if (typeof value === 'boolean') {\n this[value ? 'open' : 'close']();\n }\n\n return this.opened_;\n }\n /**\n * Closes the modal, does nothing if the `ModalDialog` is\n * not open.\n *\n * @fires ModalDialog#beforemodalclose\n * @fires ModalDialog#modalclose\n */\n ;\n\n _proto.close = function close() {\n if (!this.opened_) {\n return;\n }\n\n var player = this.player();\n /**\n * Fired just before a `ModalDialog` is closed.\n *\n * @event ModalDialog#beforemodalclose\n * @type {EventTarget~Event}\n */\n\n this.trigger('beforemodalclose');\n this.opened_ = false;\n\n if (this.wasPlaying_ && this.options_.pauseOnOpen) {\n player.play();\n }\n\n this.off('keydown', this.handleKeyDown);\n\n if (this.hadControls_) {\n player.controls(true);\n }\n\n this.hide();\n this.el().setAttribute('aria-hidden', 'true');\n /**\n * Fired just after a `ModalDialog` is closed.\n *\n * @event ModalDialog#modalclose\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalclose');\n this.conditionalBlur_();\n\n if (this.options_.temporary) {\n this.dispose();\n }\n }\n /**\n * Check to see if the `ModalDialog` is closeable via the UI.\n *\n * @param {boolean} [value]\n * If given as a boolean, it will set the `closeable` option.\n *\n * @return {boolean}\n * Returns the final value of the closable option.\n */\n ;\n\n _proto.closeable = function closeable(value) {\n if (typeof value === 'boolean') {\n var closeable = this.closeable_ = !!value;\n var close = this.getChild('closeButton'); // If this is being made closeable and has no close button, add one.\n\n if (closeable && !close) {\n // The close button should be a child of the modal - not its\n // content element, so temporarily change the content element.\n var temp = this.contentEl_;\n this.contentEl_ = this.el_;\n close = this.addChild('closeButton', {\n controlText: 'Close Modal Dialog'\n });\n this.contentEl_ = temp;\n this.on(close, 'close', this.close);\n } // If this is being made uncloseable and has a close button, remove it.\n\n\n if (!closeable && close) {\n this.off(close, 'close', this.close);\n this.removeChild(close);\n close.dispose();\n }\n }\n\n return this.closeable_;\n }\n /**\n * Fill the modal's content element with the modal's \"content\" option.\n * The content element will be emptied before this change takes place.\n */\n ;\n\n _proto.fill = function fill() {\n this.fillWith(this.content());\n }\n /**\n * Fill the modal's content element with arbitrary content.\n * The content element will be emptied before this change takes place.\n *\n * @fires ModalDialog#beforemodalfill\n * @fires ModalDialog#modalfill\n *\n * @param {Mixed} [content]\n * The same rules apply to this as apply to the `content` option.\n */\n ;\n\n _proto.fillWith = function fillWith(content) {\n var contentEl = this.contentEl();\n var parentEl = contentEl.parentNode;\n var nextSiblingEl = contentEl.nextSibling;\n /**\n * Fired just before a `ModalDialog` is filled with content.\n *\n * @event ModalDialog#beforemodalfill\n * @type {EventTarget~Event}\n */\n\n this.trigger('beforemodalfill');\n this.hasBeenFilled_ = true; // Detach the content element from the DOM before performing\n // manipulation to avoid modifying the live DOM multiple times.\n\n parentEl.removeChild(contentEl);\n this.empty();\n insertContent(contentEl, content);\n /**\n * Fired just after a `ModalDialog` is filled with content.\n *\n * @event ModalDialog#modalfill\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalfill'); // Re-inject the re-filled content element.\n\n if (nextSiblingEl) {\n parentEl.insertBefore(contentEl, nextSiblingEl);\n } else {\n parentEl.appendChild(contentEl);\n } // make sure that the close button is last in the dialog DOM\n\n\n var closeButton = this.getChild('closeButton');\n\n if (closeButton) {\n parentEl.appendChild(closeButton.el_);\n }\n }\n /**\n * Empties the content element. This happens anytime the modal is filled.\n *\n * @fires ModalDialog#beforemodalempty\n * @fires ModalDialog#modalempty\n */\n ;\n\n _proto.empty = function empty() {\n /**\n * Fired just before a `ModalDialog` is emptied.\n *\n * @event ModalDialog#beforemodalempty\n * @type {EventTarget~Event}\n */\n this.trigger('beforemodalempty');\n emptyEl(this.contentEl());\n /**\n * Fired just after a `ModalDialog` is emptied.\n *\n * @event ModalDialog#modalempty\n * @type {EventTarget~Event}\n */\n\n this.trigger('modalempty');\n }\n /**\n * Gets or sets the modal content, which gets normalized before being\n * rendered into the DOM.\n *\n * This does not update the DOM or fill the modal, but it is called during\n * that process.\n *\n * @param {Mixed} [value]\n * If defined, sets the internal content value to be used on the\n * next call(s) to `fill`. This value is normalized before being\n * inserted. To \"clear\" the internal content value, pass `null`.\n *\n * @return {Mixed}\n * The current content of the modal dialog\n */\n ;\n\n _proto.content = function content(value) {\n if (typeof value !== 'undefined') {\n this.content_ = value;\n }\n\n return this.content_;\n }\n /**\n * conditionally focus the modal dialog if focus was previously on the player.\n *\n * @private\n */\n ;\n\n _proto.conditionalFocus_ = function conditionalFocus_() {\n var activeEl = document.activeElement;\n var playerEl = this.player_.el_;\n this.previouslyActiveEl_ = null;\n\n if (playerEl.contains(activeEl) || playerEl === activeEl) {\n this.previouslyActiveEl_ = activeEl;\n this.focus();\n }\n }\n /**\n * conditionally blur the element and refocus the last focused element\n *\n * @private\n */\n ;\n\n _proto.conditionalBlur_ = function conditionalBlur_() {\n if (this.previouslyActiveEl_) {\n this.previouslyActiveEl_.focus();\n this.previouslyActiveEl_ = null;\n }\n }\n /**\n * Keydown handler. Attached when modal is focused.\n *\n * @listens keydown\n */\n ;\n\n _proto.handleKeyDown = function handleKeyDown(event) {\n // Do not allow keydowns to reach out of the modal dialog.\n event.stopPropagation();\n\n if (keycode.isEventKey(event, 'Escape') && this.closeable()) {\n event.preventDefault();\n this.close();\n return;\n } // exit early if it isn't a tab key\n\n\n if (!keycode.isEventKey(event, 'Tab')) {\n return;\n }\n\n var focusableEls = this.focusableEls_();\n var activeEl = this.el_.querySelector(':focus');\n var focusIndex;\n\n for (var i = 0; i < focusableEls.length; i++) {\n if (activeEl === focusableEls[i]) {\n focusIndex = i;\n break;\n }\n }\n\n if (document.activeElement === this.el_) {\n focusIndex = 0;\n }\n\n if (event.shiftKey && focusIndex === 0) {\n focusableEls[focusableEls.length - 1].focus();\n event.preventDefault();\n } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {\n focusableEls[0].focus();\n event.preventDefault();\n }\n }\n /**\n * get all focusable elements\n *\n * @private\n */\n ;\n\n _proto.focusableEls_ = function focusableEls_() {\n var allChildren = this.el_.querySelectorAll('*');\n return Array.prototype.filter.call(allChildren, function (child) {\n return (child instanceof window$1.HTMLAnchorElement || child instanceof window$1.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window$1.HTMLInputElement || child instanceof window$1.HTMLSelectElement || child instanceof window$1.HTMLTextAreaElement || child instanceof window$1.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window$1.HTMLIFrameElement || child instanceof window$1.HTMLObjectElement || child instanceof window$1.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');\n });\n };\n\n return ModalDialog;\n}(Component);\n/**\n * Default options for `ModalDialog` default options.\n *\n * @type {Object}\n * @private\n */\n\n\nModalDialog.prototype.options_ = {\n pauseOnOpen: true,\n temporary: true\n};\nComponent.registerComponent('ModalDialog', ModalDialog);\n\n/**\n * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and\n * {@link VideoTrackList}\n *\n * @extends EventTarget\n */\n\nvar TrackList = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(TrackList, _EventTarget);\n\n /**\n * Create an instance of this class\n *\n * @param {Track[]} tracks\n * A list of tracks to initialize the list with.\n *\n * @abstract\n */\n function TrackList(tracks) {\n var _this;\n\n if (tracks === void 0) {\n tracks = [];\n }\n\n _this = _EventTarget.call(this) || this;\n _this.tracks_ = [];\n /**\n * @memberof TrackList\n * @member {number} length\n * The current number of `Track`s in the this Trackist.\n * @instance\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'length', {\n get: function get() {\n return this.tracks_.length;\n }\n });\n\n for (var i = 0; i < tracks.length; i++) {\n _this.addTrack(tracks[i]);\n }\n\n return _this;\n }\n /**\n * Add a {@link Track} to the `TrackList`\n *\n * @param {Track} track\n * The audio, video, or text track to add to the list.\n *\n * @fires TrackList#addtrack\n */\n\n\n var _proto = TrackList.prototype;\n\n _proto.addTrack = function addTrack(track) {\n var index = this.tracks_.length;\n\n if (!('' + index in this)) {\n Object.defineProperty(this, index, {\n get: function get() {\n return this.tracks_[index];\n }\n });\n } // Do not add duplicate tracks\n\n\n if (this.tracks_.indexOf(track) === -1) {\n this.tracks_.push(track);\n /**\n * Triggered when a track is added to a track list.\n *\n * @event TrackList#addtrack\n * @type {EventTarget~Event}\n * @property {Track} track\n * A reference to track that was added.\n */\n\n this.trigger({\n track: track,\n type: 'addtrack',\n target: this\n });\n }\n }\n /**\n * Remove a {@link Track} from the `TrackList`\n *\n * @param {Track} rtrack\n * The audio, video, or text track to remove from the list.\n *\n * @fires TrackList#removetrack\n */\n ;\n\n _proto.removeTrack = function removeTrack(rtrack) {\n var track;\n\n for (var i = 0, l = this.length; i < l; i++) {\n if (this[i] === rtrack) {\n track = this[i];\n\n if (track.off) {\n track.off();\n }\n\n this.tracks_.splice(i, 1);\n break;\n }\n }\n\n if (!track) {\n return;\n }\n /**\n * Triggered when a track is removed from track list.\n *\n * @event TrackList#removetrack\n * @type {EventTarget~Event}\n * @property {Track} track\n * A reference to track that was removed.\n */\n\n\n this.trigger({\n track: track,\n type: 'removetrack',\n target: this\n });\n }\n /**\n * Get a Track from the TrackList by a tracks id\n *\n * @param {string} id - the id of the track to get\n * @method getTrackById\n * @return {Track}\n * @private\n */\n ;\n\n _proto.getTrackById = function getTrackById(id) {\n var result = null;\n\n for (var i = 0, l = this.length; i < l; i++) {\n var track = this[i];\n\n if (track.id === id) {\n result = track;\n break;\n }\n }\n\n return result;\n };\n\n return TrackList;\n}(EventTarget);\n/**\n * Triggered when a different track is selected/enabled.\n *\n * @event TrackList#change\n * @type {EventTarget~Event}\n */\n\n/**\n * Events that can be called with on + eventName. See {@link EventHandler}.\n *\n * @property {Object} TrackList#allowedEvents_\n * @private\n */\n\n\nTrackList.prototype.allowedEvents_ = {\n change: 'change',\n addtrack: 'addtrack',\n removetrack: 'removetrack'\n}; // emulate attribute EventHandler support to allow for feature detection\n\nfor (var event in TrackList.prototype.allowedEvents_) {\n TrackList.prototype['on' + event] = null;\n}\n\n/**\n * Anywhere we call this function we diverge from the spec\n * as we only support one enabled audiotrack at a time\n *\n * @param {AudioTrackList} list\n * list to work on\n *\n * @param {AudioTrack} track\n * The track to skip\n *\n * @private\n */\n\nvar disableOthers = function disableOthers(list, track) {\n for (var i = 0; i < list.length; i++) {\n if (!Object.keys(list[i]).length || track.id === list[i].id) {\n continue;\n } // another audio track is enabled, disable it\n\n\n list[i].enabled = false;\n }\n};\n/**\n * The current list of {@link AudioTrack} for a media file.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}\n * @extends TrackList\n */\n\n\nvar AudioTrackList = /*#__PURE__*/function (_TrackList) {\n _inheritsLoose(AudioTrackList, _TrackList);\n\n /**\n * Create an instance of this class.\n *\n * @param {AudioTrack[]} [tracks=[]]\n * A list of `AudioTrack` to instantiate the list with.\n */\n function AudioTrackList(tracks) {\n var _this;\n\n if (tracks === void 0) {\n tracks = [];\n }\n\n // make sure only 1 track is enabled\n // sorted from last index to first index\n for (var i = tracks.length - 1; i >= 0; i--) {\n if (tracks[i].enabled) {\n disableOthers(tracks, tracks[i]);\n break;\n }\n }\n\n _this = _TrackList.call(this, tracks) || this;\n _this.changing_ = false;\n return _this;\n }\n /**\n * Add an {@link AudioTrack} to the `AudioTrackList`.\n *\n * @param {AudioTrack} track\n * The AudioTrack to add to the list\n *\n * @fires TrackList#addtrack\n */\n\n\n var _proto = AudioTrackList.prototype;\n\n _proto.addTrack = function addTrack(track) {\n var _this2 = this;\n\n if (track.enabled) {\n disableOthers(this, track);\n }\n\n _TrackList.prototype.addTrack.call(this, track); // native tracks don't have this\n\n\n if (!track.addEventListener) {\n return;\n }\n\n track.enabledChange_ = function () {\n // when we are disabling other tracks (since we don't support\n // more than one track at a time) we will set changing_\n // to true so that we don't trigger additional change events\n if (_this2.changing_) {\n return;\n }\n\n _this2.changing_ = true;\n disableOthers(_this2, track);\n _this2.changing_ = false;\n\n _this2.trigger('change');\n };\n /**\n * @listens AudioTrack#enabledchange\n * @fires TrackList#change\n */\n\n\n track.addEventListener('enabledchange', track.enabledChange_);\n };\n\n _proto.removeTrack = function removeTrack(rtrack) {\n _TrackList.prototype.removeTrack.call(this, rtrack);\n\n if (rtrack.removeEventListener && rtrack.enabledChange_) {\n rtrack.removeEventListener('enabledchange', rtrack.enabledChange_);\n rtrack.enabledChange_ = null;\n }\n };\n\n return AudioTrackList;\n}(TrackList);\n\n/**\n * Un-select all other {@link VideoTrack}s that are selected.\n *\n * @param {VideoTrackList} list\n * list to work on\n *\n * @param {VideoTrack} track\n * The track to skip\n *\n * @private\n */\n\nvar disableOthers$1 = function disableOthers(list, track) {\n for (var i = 0; i < list.length; i++) {\n if (!Object.keys(list[i]).length || track.id === list[i].id) {\n continue;\n } // another video track is enabled, disable it\n\n\n list[i].selected = false;\n }\n};\n/**\n * The current list of {@link VideoTrack} for a video.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}\n * @extends TrackList\n */\n\n\nvar VideoTrackList = /*#__PURE__*/function (_TrackList) {\n _inheritsLoose(VideoTrackList, _TrackList);\n\n /**\n * Create an instance of this class.\n *\n * @param {VideoTrack[]} [tracks=[]]\n * A list of `VideoTrack` to instantiate the list with.\n */\n function VideoTrackList(tracks) {\n var _this;\n\n if (tracks === void 0) {\n tracks = [];\n }\n\n // make sure only 1 track is enabled\n // sorted from last index to first index\n for (var i = tracks.length - 1; i >= 0; i--) {\n if (tracks[i].selected) {\n disableOthers$1(tracks, tracks[i]);\n break;\n }\n }\n\n _this = _TrackList.call(this, tracks) || this;\n _this.changing_ = false;\n /**\n * @member {number} VideoTrackList#selectedIndex\n * The current index of the selected {@link VideoTrack`}.\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'selectedIndex', {\n get: function get() {\n for (var _i = 0; _i < this.length; _i++) {\n if (this[_i].selected) {\n return _i;\n }\n }\n\n return -1;\n },\n set: function set() {}\n });\n return _this;\n }\n /**\n * Add a {@link VideoTrack} to the `VideoTrackList`.\n *\n * @param {VideoTrack} track\n * The VideoTrack to add to the list\n *\n * @fires TrackList#addtrack\n */\n\n\n var _proto = VideoTrackList.prototype;\n\n _proto.addTrack = function addTrack(track) {\n var _this2 = this;\n\n if (track.selected) {\n disableOthers$1(this, track);\n }\n\n _TrackList.prototype.addTrack.call(this, track); // native tracks don't have this\n\n\n if (!track.addEventListener) {\n return;\n }\n\n track.selectedChange_ = function () {\n if (_this2.changing_) {\n return;\n }\n\n _this2.changing_ = true;\n disableOthers$1(_this2, track);\n _this2.changing_ = false;\n\n _this2.trigger('change');\n };\n /**\n * @listens VideoTrack#selectedchange\n * @fires TrackList#change\n */\n\n\n track.addEventListener('selectedchange', track.selectedChange_);\n };\n\n _proto.removeTrack = function removeTrack(rtrack) {\n _TrackList.prototype.removeTrack.call(this, rtrack);\n\n if (rtrack.removeEventListener && rtrack.selectedChange_) {\n rtrack.removeEventListener('selectedchange', rtrack.selectedChange_);\n rtrack.selectedChange_ = null;\n }\n };\n\n return VideoTrackList;\n}(TrackList);\n\n/**\n * The current list of {@link TextTrack} for a media file.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}\n * @extends TrackList\n */\n\nvar TextTrackList = /*#__PURE__*/function (_TrackList) {\n _inheritsLoose(TextTrackList, _TrackList);\n\n function TextTrackList() {\n return _TrackList.apply(this, arguments) || this;\n }\n\n var _proto = TextTrackList.prototype;\n\n /**\n * Add a {@link TextTrack} to the `TextTrackList`\n *\n * @param {TextTrack} track\n * The text track to add to the list.\n *\n * @fires TrackList#addtrack\n */\n _proto.addTrack = function addTrack(track) {\n var _this = this;\n\n _TrackList.prototype.addTrack.call(this, track);\n\n if (!this.queueChange_) {\n this.queueChange_ = function () {\n return _this.queueTrigger('change');\n };\n }\n\n if (!this.triggerSelectedlanguagechange) {\n this.triggerSelectedlanguagechange_ = function () {\n return _this.trigger('selectedlanguagechange');\n };\n }\n /**\n * @listens TextTrack#modechange\n * @fires TrackList#change\n */\n\n\n track.addEventListener('modechange', this.queueChange_);\n var nonLanguageTextTrackKind = ['metadata', 'chapters'];\n\n if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {\n track.addEventListener('modechange', this.triggerSelectedlanguagechange_);\n }\n };\n\n _proto.removeTrack = function removeTrack(rtrack) {\n _TrackList.prototype.removeTrack.call(this, rtrack); // manually remove the event handlers we added\n\n\n if (rtrack.removeEventListener) {\n if (this.queueChange_) {\n rtrack.removeEventListener('modechange', this.queueChange_);\n }\n\n if (this.selectedlanguagechange_) {\n rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_);\n }\n }\n };\n\n return TextTrackList;\n}(TrackList);\n\n/**\n * @file html-track-element-list.js\n */\n\n/**\n * The current list of {@link HtmlTrackElement}s.\n */\nvar HtmlTrackElementList = /*#__PURE__*/function () {\n /**\n * Create an instance of this class.\n *\n * @param {HtmlTrackElement[]} [tracks=[]]\n * A list of `HtmlTrackElement` to instantiate the list with.\n */\n function HtmlTrackElementList(trackElements) {\n if (trackElements === void 0) {\n trackElements = [];\n }\n\n this.trackElements_ = [];\n /**\n * @memberof HtmlTrackElementList\n * @member {number} length\n * The current number of `Track`s in the this Trackist.\n * @instance\n */\n\n Object.defineProperty(this, 'length', {\n get: function get() {\n return this.trackElements_.length;\n }\n });\n\n for (var i = 0, length = trackElements.length; i < length; i++) {\n this.addTrackElement_(trackElements[i]);\n }\n }\n /**\n * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`\n *\n * @param {HtmlTrackElement} trackElement\n * The track element to add to the list.\n *\n * @private\n */\n\n\n var _proto = HtmlTrackElementList.prototype;\n\n _proto.addTrackElement_ = function addTrackElement_(trackElement) {\n var index = this.trackElements_.length;\n\n if (!('' + index in this)) {\n Object.defineProperty(this, index, {\n get: function get() {\n return this.trackElements_[index];\n }\n });\n } // Do not add duplicate elements\n\n\n if (this.trackElements_.indexOf(trackElement) === -1) {\n this.trackElements_.push(trackElement);\n }\n }\n /**\n * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an\n * {@link TextTrack}.\n *\n * @param {TextTrack} track\n * The track associated with a track element.\n *\n * @return {HtmlTrackElement|undefined}\n * The track element that was found or undefined.\n *\n * @private\n */\n ;\n\n _proto.getTrackElementByTrack_ = function getTrackElementByTrack_(track) {\n var trackElement_;\n\n for (var i = 0, length = this.trackElements_.length; i < length; i++) {\n if (track === this.trackElements_[i].track) {\n trackElement_ = this.trackElements_[i];\n break;\n }\n }\n\n return trackElement_;\n }\n /**\n * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`\n *\n * @param {HtmlTrackElement} trackElement\n * The track element to remove from the list.\n *\n * @private\n */\n ;\n\n _proto.removeTrackElement_ = function removeTrackElement_(trackElement) {\n for (var i = 0, length = this.trackElements_.length; i < length; i++) {\n if (trackElement === this.trackElements_[i]) {\n if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') {\n this.trackElements_[i].track.off();\n }\n\n if (typeof this.trackElements_[i].off === 'function') {\n this.trackElements_[i].off();\n }\n\n this.trackElements_.splice(i, 1);\n break;\n }\n }\n };\n\n return HtmlTrackElementList;\n}();\n\n/**\n * @file text-track-cue-list.js\n */\n\n/**\n * @typedef {Object} TextTrackCueList~TextTrackCue\n *\n * @property {string} id\n * The unique id for this text track cue\n *\n * @property {number} startTime\n * The start time for this text track cue\n *\n * @property {number} endTime\n * The end time for this text track cue\n *\n * @property {boolean} pauseOnExit\n * Pause when the end time is reached if true.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}\n */\n\n/**\n * A List of TextTrackCues.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}\n */\nvar TextTrackCueList = /*#__PURE__*/function () {\n /**\n * Create an instance of this class..\n *\n * @param {Array} cues\n * A list of cues to be initialized with\n */\n function TextTrackCueList(cues) {\n TextTrackCueList.prototype.setCues_.call(this, cues);\n /**\n * @memberof TextTrackCueList\n * @member {number} length\n * The current number of `TextTrackCue`s in the TextTrackCueList.\n * @instance\n */\n\n Object.defineProperty(this, 'length', {\n get: function get() {\n return this.length_;\n }\n });\n }\n /**\n * A setter for cues in this list. Creates getters\n * an an index for the cues.\n *\n * @param {Array} cues\n * An array of cues to set\n *\n * @private\n */\n\n\n var _proto = TextTrackCueList.prototype;\n\n _proto.setCues_ = function setCues_(cues) {\n var oldLength = this.length || 0;\n var i = 0;\n var l = cues.length;\n this.cues_ = cues;\n this.length_ = cues.length;\n\n var defineProp = function defineProp(index) {\n if (!('' + index in this)) {\n Object.defineProperty(this, '' + index, {\n get: function get() {\n return this.cues_[index];\n }\n });\n }\n };\n\n if (oldLength < l) {\n i = oldLength;\n\n for (; i < l; i++) {\n defineProp.call(this, i);\n }\n }\n }\n /**\n * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.\n *\n * @param {string} id\n * The id of the cue that should be searched for.\n *\n * @return {TextTrackCueList~TextTrackCue|null}\n * A single cue or null if none was found.\n */\n ;\n\n _proto.getCueById = function getCueById(id) {\n var result = null;\n\n for (var i = 0, l = this.length; i < l; i++) {\n var cue = this[i];\n\n if (cue.id === id) {\n result = cue;\n break;\n }\n }\n\n return result;\n };\n\n return TextTrackCueList;\n}();\n\n/**\n * @file track-kinds.js\n */\n\n/**\n * All possible `VideoTrackKind`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind\n * @typedef VideoTrack~Kind\n * @enum\n */\nvar VideoTrackKind = {\n alternative: 'alternative',\n captions: 'captions',\n main: 'main',\n sign: 'sign',\n subtitles: 'subtitles',\n commentary: 'commentary'\n};\n/**\n * All possible `AudioTrackKind`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind\n * @typedef AudioTrack~Kind\n * @enum\n */\n\nvar AudioTrackKind = {\n 'alternative': 'alternative',\n 'descriptions': 'descriptions',\n 'main': 'main',\n 'main-desc': 'main-desc',\n 'translation': 'translation',\n 'commentary': 'commentary'\n};\n/**\n * All possible `TextTrackKind`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind\n * @typedef TextTrack~Kind\n * @enum\n */\n\nvar TextTrackKind = {\n subtitles: 'subtitles',\n captions: 'captions',\n descriptions: 'descriptions',\n chapters: 'chapters',\n metadata: 'metadata'\n};\n/**\n * All possible `TextTrackMode`s\n *\n * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode\n * @typedef TextTrack~Mode\n * @enum\n */\n\nvar TextTrackMode = {\n disabled: 'disabled',\n hidden: 'hidden',\n showing: 'showing'\n};\n\n/**\n * A Track class that contains all of the common functionality for {@link AudioTrack},\n * {@link VideoTrack}, and {@link TextTrack}.\n *\n * > Note: This class should not be used directly\n *\n * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}\n * @extends EventTarget\n * @abstract\n */\n\nvar Track = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(Track, _EventTarget);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} [options={}]\n * Object of option names and values\n *\n * @param {string} [options.kind='']\n * A valid kind for the track type you are creating.\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this AudioTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @abstract\n */\n function Track(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _EventTarget.call(this) || this;\n var trackProps = {\n id: options.id || 'vjs_track_' + newGUID(),\n kind: options.kind || '',\n label: options.label || '',\n language: options.language || ''\n };\n /**\n * @memberof Track\n * @member {string} id\n * The id of this track. Cannot be changed after creation.\n * @instance\n *\n * @readonly\n */\n\n /**\n * @memberof Track\n * @member {string} kind\n * The kind of track that this is. Cannot be changed after creation.\n * @instance\n *\n * @readonly\n */\n\n /**\n * @memberof Track\n * @member {string} label\n * The label of this track. Cannot be changed after creation.\n * @instance\n *\n * @readonly\n */\n\n /**\n * @memberof Track\n * @member {string} language\n * The two letter language code for this track. Cannot be changed after\n * creation.\n * @instance\n *\n * @readonly\n */\n\n var _loop = function _loop(key) {\n Object.defineProperty(_assertThisInitialized(_this), key, {\n get: function get() {\n return trackProps[key];\n },\n set: function set() {}\n });\n };\n\n for (var key in trackProps) {\n _loop(key);\n }\n\n return _this;\n }\n\n return Track;\n}(EventTarget);\n\n/**\n * @file url.js\n * @module url\n */\n/**\n * @typedef {Object} url:URLObject\n *\n * @property {string} protocol\n * The protocol of the url that was parsed.\n *\n * @property {string} hostname\n * The hostname of the url that was parsed.\n *\n * @property {string} port\n * The port of the url that was parsed.\n *\n * @property {string} pathname\n * The pathname of the url that was parsed.\n *\n * @property {string} search\n * The search query of the url that was parsed.\n *\n * @property {string} hash\n * The hash of the url that was parsed.\n *\n * @property {string} host\n * The host of the url that was parsed.\n */\n\n/**\n * Resolve and parse the elements of a URL.\n *\n * @function\n * @param {String} url\n * The url to parse\n *\n * @return {url:URLObject}\n * An object of url details\n */\n\nvar parseUrl = function parseUrl(url) {\n var props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host']; // add the url to an anchor and let the browser parse the URL\n\n var a = document.createElement('a');\n a.href = url; // IE8 (and 9?) Fix\n // ie8 doesn't parse the URL correctly until the anchor is actually\n // added to the body, and an innerHTML is needed to trigger the parsing\n\n var addToBody = a.host === '' && a.protocol !== 'file:';\n var div;\n\n if (addToBody) {\n div = document.createElement('div');\n div.innerHTML = \"\";\n a = div.firstChild; // prevent the div from affecting layout\n\n div.setAttribute('style', 'display:none; position:absolute;');\n document.body.appendChild(div);\n } // Copy the specific URL properties to a new object\n // This is also needed for IE8 because the anchor loses its\n // properties when it's removed from the dom\n\n\n var details = {};\n\n for (var i = 0; i < props.length; i++) {\n details[props[i]] = a[props[i]];\n } // IE9 adds the port to the host property unlike everyone else. If\n // a port identifier is added for standard ports, strip it.\n\n\n if (details.protocol === 'http:') {\n details.host = details.host.replace(/:80$/, '');\n }\n\n if (details.protocol === 'https:') {\n details.host = details.host.replace(/:443$/, '');\n }\n\n if (!details.protocol) {\n details.protocol = window$1.location.protocol;\n }\n\n if (addToBody) {\n document.body.removeChild(div);\n }\n\n return details;\n};\n/**\n * Get absolute version of relative URL. Used to tell Flash the correct URL.\n *\n * @function\n * @param {string} url\n * URL to make absolute\n *\n * @return {string}\n * Absolute URL\n *\n * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue\n */\n\nvar getAbsoluteURL = function getAbsoluteURL(url) {\n // Check if absolute URL\n if (!url.match(/^https?:\\/\\//)) {\n // Convert to absolute URL. Flash hosted off-site needs an absolute URL.\n var div = document.createElement('div');\n div.innerHTML = \"x\";\n url = div.firstChild.href;\n }\n\n return url;\n};\n/**\n * Returns the extension of the passed file name. It will return an empty string\n * if passed an invalid path.\n *\n * @function\n * @param {string} path\n * The fileName path like '/path/to/file.mp4'\n *\n * @return {string}\n * The extension in lower case or an empty string if no\n * extension could be found.\n */\n\nvar getFileExtension = function getFileExtension(path) {\n if (typeof path === 'string') {\n var splitPathRe = /^(\\/?)([\\s\\S]*?)((?:\\.{1,2}|[^\\/]+?)(\\.([^\\.\\/\\?]+)))(?:[\\/]*|[\\?].*)$/;\n var pathParts = splitPathRe.exec(path);\n\n if (pathParts) {\n return pathParts.pop().toLowerCase();\n }\n }\n\n return '';\n};\n/**\n * Returns whether the url passed is a cross domain request or not.\n *\n * @function\n * @param {string} url\n * The url to check.\n *\n * @param {Object} [winLoc]\n * the domain to check the url against, defaults to window.location\n *\n * @param {string} [winLoc.protocol]\n * The window location protocol defaults to window.location.protocol\n *\n * @param {string} [winLoc.host]\n * The window location host defaults to window.location.host\n *\n * @return {boolean}\n * Whether it is a cross domain request or not.\n */\n\nvar isCrossOrigin = function isCrossOrigin(url, winLoc) {\n if (winLoc === void 0) {\n winLoc = window$1.location;\n }\n\n var urlInfo = parseUrl(url); // IE8 protocol relative urls will return ':' for protocol\n\n var srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol; // Check if url is for another domain/origin\n // IE8 doesn't know location.origin, so we won't rely on it here\n\n var crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;\n return crossOrigin;\n};\n\nvar Url = /*#__PURE__*/Object.freeze({\n __proto__: null,\n parseUrl: parseUrl,\n getAbsoluteURL: getAbsoluteURL,\n getFileExtension: getFileExtension,\n isCrossOrigin: isCrossOrigin\n});\n\n/**\n * Takes a webvtt file contents and parses it into cues\n *\n * @param {string} srcContent\n * webVTT file contents\n *\n * @param {TextTrack} track\n * TextTrack to add cues to. Cues come from the srcContent.\n *\n * @private\n */\n\nvar parseCues = function parseCues(srcContent, track) {\n var parser = new window$1.WebVTT.Parser(window$1, window$1.vttjs, window$1.WebVTT.StringDecoder());\n var errors = [];\n\n parser.oncue = function (cue) {\n track.addCue(cue);\n };\n\n parser.onparsingerror = function (error) {\n errors.push(error);\n };\n\n parser.onflush = function () {\n track.trigger({\n type: 'loadeddata',\n target: track\n });\n };\n\n parser.parse(srcContent);\n\n if (errors.length > 0) {\n if (window$1.console && window$1.console.groupCollapsed) {\n window$1.console.groupCollapsed(\"Text Track parsing errors for \" + track.src);\n }\n\n errors.forEach(function (error) {\n return log.error(error);\n });\n\n if (window$1.console && window$1.console.groupEnd) {\n window$1.console.groupEnd();\n }\n }\n\n parser.flush();\n};\n/**\n * Load a `TextTrack` from a specified url.\n *\n * @param {string} src\n * Url to load track from.\n *\n * @param {TextTrack} track\n * Track to add cues to. Comes from the content at the end of `url`.\n *\n * @private\n */\n\n\nvar loadTrack = function loadTrack(src, track) {\n var opts = {\n uri: src\n };\n var crossOrigin = isCrossOrigin(src);\n\n if (crossOrigin) {\n opts.cors = crossOrigin;\n }\n\n XHR(opts, bind(this, function (err, response, responseBody) {\n if (err) {\n return log.error(err, response);\n }\n\n track.loaded_ = true; // Make sure that vttjs has loaded, otherwise, wait till it finished loading\n // NOTE: this is only used for the alt/video.novtt.js build\n\n if (typeof window$1.WebVTT !== 'function') {\n if (track.tech_) {\n // to prevent use before define eslint error, we define loadHandler\n // as a let here\n track.tech_.any(['vttjsloaded', 'vttjserror'], function (event) {\n if (event.type === 'vttjserror') {\n log.error(\"vttjs failed to load, stopping trying to process \" + track.src);\n return;\n }\n\n return parseCues(responseBody, track);\n });\n }\n } else {\n parseCues(responseBody, track);\n }\n }));\n};\n/**\n * A representation of a single `TextTrack`.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}\n * @extends Track\n */\n\n\nvar TextTrack = /*#__PURE__*/function (_Track) {\n _inheritsLoose(TextTrack, _Track);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} options={}\n * Object of option names and values\n *\n * @param {Tech} options.tech\n * A reference to the tech that owns this TextTrack.\n *\n * @param {TextTrack~Kind} [options.kind='subtitles']\n * A valid text track kind.\n *\n * @param {TextTrack~Mode} [options.mode='disabled']\n * A valid text track mode.\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this TextTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {string} [options.srclang='']\n * A valid two character language code. An alternative, but deprioritized\n * version of `options.language`\n *\n * @param {string} [options.src]\n * A url to TextTrack cues.\n *\n * @param {boolean} [options.default]\n * If this track should default to on or off.\n */\n function TextTrack(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n if (!options.tech) {\n throw new Error('A tech was not provided.');\n }\n\n var settings = mergeOptions(options, {\n kind: TextTrackKind[options.kind] || 'subtitles',\n language: options.language || options.srclang || ''\n });\n var mode = TextTrackMode[settings.mode] || 'disabled';\n var default_ = settings[\"default\"];\n\n if (settings.kind === 'metadata' || settings.kind === 'chapters') {\n mode = 'hidden';\n }\n\n _this = _Track.call(this, settings) || this;\n _this.tech_ = settings.tech;\n _this.cues_ = [];\n _this.activeCues_ = [];\n _this.preload_ = _this.tech_.preloadTextTracks !== false;\n var cues = new TextTrackCueList(_this.cues_);\n var activeCues = new TextTrackCueList(_this.activeCues_);\n var changed = false;\n var timeupdateHandler = bind(_assertThisInitialized(_this), function () {\n // Accessing this.activeCues for the side-effects of updating itself\n // due to its nature as a getter function. Do not remove or cues will\n // stop updating!\n // Use the setter to prevent deletion from uglify (pure_getters rule)\n this.activeCues = this.activeCues;\n\n if (changed) {\n this.trigger('cuechange');\n changed = false;\n }\n });\n\n if (mode !== 'disabled') {\n _this.tech_.ready(function () {\n _this.tech_.on('timeupdate', timeupdateHandler);\n }, true);\n }\n\n Object.defineProperties(_assertThisInitialized(_this), {\n /**\n * @memberof TextTrack\n * @member {boolean} default\n * If this track was set to be on or off by default. Cannot be changed after\n * creation.\n * @instance\n *\n * @readonly\n */\n \"default\": {\n get: function get() {\n return default_;\n },\n set: function set() {}\n },\n\n /**\n * @memberof TextTrack\n * @member {string} mode\n * Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will\n * not be set if setting to an invalid mode.\n * @instance\n *\n * @fires TextTrack#modechange\n */\n mode: {\n get: function get() {\n return mode;\n },\n set: function set(newMode) {\n var _this2 = this;\n\n if (!TextTrackMode[newMode]) {\n return;\n }\n\n mode = newMode;\n\n if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {\n // On-demand load.\n loadTrack(this.src, this);\n }\n\n if (mode !== 'disabled') {\n this.tech_.ready(function () {\n _this2.tech_.on('timeupdate', timeupdateHandler);\n }, true);\n } else {\n this.tech_.off('timeupdate', timeupdateHandler);\n }\n /**\n * An event that fires when mode changes on this track. This allows\n * the TextTrackList that holds this track to act accordingly.\n *\n * > Note: This is not part of the spec!\n *\n * @event TextTrack#modechange\n * @type {EventTarget~Event}\n */\n\n\n this.trigger('modechange');\n }\n },\n\n /**\n * @memberof TextTrack\n * @member {TextTrackCueList} cues\n * The text track cue list for this TextTrack.\n * @instance\n */\n cues: {\n get: function get() {\n if (!this.loaded_) {\n return null;\n }\n\n return cues;\n },\n set: function set() {}\n },\n\n /**\n * @memberof TextTrack\n * @member {TextTrackCueList} activeCues\n * The list text track cues that are currently active for this TextTrack.\n * @instance\n */\n activeCues: {\n get: function get() {\n if (!this.loaded_) {\n return null;\n } // nothing to do\n\n\n if (this.cues.length === 0) {\n return activeCues;\n }\n\n var ct = this.tech_.currentTime();\n var active = [];\n\n for (var i = 0, l = this.cues.length; i < l; i++) {\n var cue = this.cues[i];\n\n if (cue.startTime <= ct && cue.endTime >= ct) {\n active.push(cue);\n } else if (cue.startTime === cue.endTime && cue.startTime <= ct && cue.startTime + 0.5 >= ct) {\n active.push(cue);\n }\n }\n\n changed = false;\n\n if (active.length !== this.activeCues_.length) {\n changed = true;\n } else {\n for (var _i = 0; _i < active.length; _i++) {\n if (this.activeCues_.indexOf(active[_i]) === -1) {\n changed = true;\n }\n }\n }\n\n this.activeCues_ = active;\n activeCues.setCues_(this.activeCues_);\n return activeCues;\n },\n // /!\\ Keep this setter empty (see the timeupdate handler above)\n set: function set() {}\n }\n });\n\n if (settings.src) {\n _this.src = settings.src;\n\n if (!_this.preload_) {\n // Tracks will load on-demand.\n // Act like we're loaded for other purposes.\n _this.loaded_ = true;\n }\n\n if (_this.preload_ || default_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {\n loadTrack(_this.src, _assertThisInitialized(_this));\n }\n } else {\n _this.loaded_ = true;\n }\n\n return _this;\n }\n /**\n * Add a cue to the internal list of cues.\n *\n * @param {TextTrack~Cue} cue\n * The cue to add to our internal list\n */\n\n\n var _proto = TextTrack.prototype;\n\n _proto.addCue = function addCue(originalCue) {\n var cue = originalCue;\n\n if (window$1.vttjs && !(originalCue instanceof window$1.vttjs.VTTCue)) {\n cue = new window$1.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);\n\n for (var prop in originalCue) {\n if (!(prop in cue)) {\n cue[prop] = originalCue[prop];\n }\n } // make sure that `id` is copied over\n\n\n cue.id = originalCue.id;\n cue.originalCue_ = originalCue;\n }\n\n var tracks = this.tech_.textTracks();\n\n for (var i = 0; i < tracks.length; i++) {\n if (tracks[i] !== this) {\n tracks[i].removeCue(cue);\n }\n }\n\n this.cues_.push(cue);\n this.cues.setCues_(this.cues_);\n }\n /**\n * Remove a cue from our internal list\n *\n * @param {TextTrack~Cue} removeCue\n * The cue to remove from our internal list\n */\n ;\n\n _proto.removeCue = function removeCue(_removeCue) {\n var i = this.cues_.length;\n\n while (i--) {\n var cue = this.cues_[i];\n\n if (cue === _removeCue || cue.originalCue_ && cue.originalCue_ === _removeCue) {\n this.cues_.splice(i, 1);\n this.cues.setCues_(this.cues_);\n break;\n }\n }\n };\n\n return TextTrack;\n}(Track);\n/**\n * cuechange - One or more cues in the track have become active or stopped being active.\n */\n\n\nTextTrack.prototype.allowedEvents_ = {\n cuechange: 'cuechange'\n};\n\n/**\n * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}\n * only one `AudioTrack` in the list will be enabled at a time.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}\n * @extends Track\n */\n\nvar AudioTrack = /*#__PURE__*/function (_Track) {\n _inheritsLoose(AudioTrack, _Track);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} [options={}]\n * Object of option names and values\n *\n * @param {AudioTrack~Kind} [options.kind='']\n * A valid audio track kind\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this AudioTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {boolean} [options.enabled]\n * If this track is the one that is currently playing. If this track is part of\n * an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.\n */\n function AudioTrack(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n var settings = mergeOptions(options, {\n kind: AudioTrackKind[options.kind] || ''\n });\n _this = _Track.call(this, settings) || this;\n var enabled = false;\n /**\n * @memberof AudioTrack\n * @member {boolean} enabled\n * If this `AudioTrack` is enabled or not. When setting this will\n * fire {@link AudioTrack#enabledchange} if the state of enabled is changed.\n * @instance\n *\n * @fires VideoTrack#selectedchange\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'enabled', {\n get: function get() {\n return enabled;\n },\n set: function set(newEnabled) {\n // an invalid or unchanged value\n if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {\n return;\n }\n\n enabled = newEnabled;\n /**\n * An event that fires when enabled changes on this track. This allows\n * the AudioTrackList that holds this track to act accordingly.\n *\n * > Note: This is not part of the spec! Native tracks will do\n * this internally without an event.\n *\n * @event AudioTrack#enabledchange\n * @type {EventTarget~Event}\n */\n\n this.trigger('enabledchange');\n }\n }); // if the user sets this track to selected then\n // set selected to that true value otherwise\n // we keep it false\n\n if (settings.enabled) {\n _this.enabled = settings.enabled;\n }\n\n _this.loaded_ = true;\n return _this;\n }\n\n return AudioTrack;\n}(Track);\n\n/**\n * A representation of a single `VideoTrack`.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}\n * @extends Track\n */\n\nvar VideoTrack = /*#__PURE__*/function (_Track) {\n _inheritsLoose(VideoTrack, _Track);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} [options={}]\n * Object of option names and values\n *\n * @param {string} [options.kind='']\n * A valid {@link VideoTrack~Kind}\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this AudioTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {boolean} [options.selected]\n * If this track is the one that is currently playing.\n */\n function VideoTrack(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n var settings = mergeOptions(options, {\n kind: VideoTrackKind[options.kind] || ''\n });\n _this = _Track.call(this, settings) || this;\n var selected = false;\n /**\n * @memberof VideoTrack\n * @member {boolean} selected\n * If this `VideoTrack` is selected or not. When setting this will\n * fire {@link VideoTrack#selectedchange} if the state of selected changed.\n * @instance\n *\n * @fires VideoTrack#selectedchange\n */\n\n Object.defineProperty(_assertThisInitialized(_this), 'selected', {\n get: function get() {\n return selected;\n },\n set: function set(newSelected) {\n // an invalid or unchanged value\n if (typeof newSelected !== 'boolean' || newSelected === selected) {\n return;\n }\n\n selected = newSelected;\n /**\n * An event that fires when selected changes on this track. This allows\n * the VideoTrackList that holds this track to act accordingly.\n *\n * > Note: This is not part of the spec! Native tracks will do\n * this internally without an event.\n *\n * @event VideoTrack#selectedchange\n * @type {EventTarget~Event}\n */\n\n this.trigger('selectedchange');\n }\n }); // if the user sets this track to selected then\n // set selected to that true value otherwise\n // we keep it false\n\n if (settings.selected) {\n _this.selected = settings.selected;\n }\n\n return _this;\n }\n\n return VideoTrack;\n}(Track);\n\n/**\n * @memberof HTMLTrackElement\n * @typedef {HTMLTrackElement~ReadyState}\n * @enum {number}\n */\n\nvar NONE = 0;\nvar LOADING = 1;\nvar LOADED = 2;\nvar ERROR = 3;\n/**\n * A single track represented in the DOM.\n *\n * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}\n * @extends EventTarget\n */\n\nvar HTMLTrackElement = /*#__PURE__*/function (_EventTarget) {\n _inheritsLoose(HTMLTrackElement, _EventTarget);\n\n /**\n * Create an instance of this class.\n *\n * @param {Object} options={}\n * Object of option names and values\n *\n * @param {Tech} options.tech\n * A reference to the tech that owns this HTMLTrackElement.\n *\n * @param {TextTrack~Kind} [options.kind='subtitles']\n * A valid text track kind.\n *\n * @param {TextTrack~Mode} [options.mode='disabled']\n * A valid text track mode.\n *\n * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n * A unique id for this TextTrack.\n *\n * @param {string} [options.label='']\n * The menu label for this track.\n *\n * @param {string} [options.language='']\n * A valid two character language code.\n *\n * @param {string} [options.srclang='']\n * A valid two character language code. An alternative, but deprioritized\n * vesion of `options.language`\n *\n * @param {string} [options.src]\n * A url to TextTrack cues.\n *\n * @param {boolean} [options.default]\n * If this track should default to on or off.\n */\n function HTMLTrackElement(options) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n _this = _EventTarget.call(this) || this;\n var readyState;\n var track = new TextTrack(options);\n _this.kind = track.kind;\n _this.src = track.src;\n _this.srclang = track.language;\n _this.label = track.label;\n _this[\"default\"] = track[\"default\"];\n Object.defineProperties(_assertThisInitialized(_this), {\n /**\n * @memberof HTMLTrackElement\n * @member {HTMLTrackElement~ReadyState} readyState\n * The current ready state of the track element.\n * @instance\n */\n readyState: {\n get: function get() {\n return readyState;\n }\n },\n\n /**\n * @memberof HTMLTrackElement\n * @member {TextTrack} track\n * The underlying TextTrack object.\n * @instance\n *\n */\n track: {\n get: function get() {\n return track;\n }\n }\n });\n readyState = NONE;\n /**\n * @listens TextTrack#loadeddata\n * @fires HTMLTrackElement#load\n */\n\n track.addEventListener('loadeddata', function () {\n readyState = LOADED;\n\n _this.trigger({\n type: 'load',\n target: _assertThisInitialized(_this)\n });\n });\n return _this;\n }\n\n return HTMLTrackElement;\n}(EventTarget);\n\nHTMLTrackElement.prototype.allowedEvents_ = {\n load: 'load'\n};\nHTMLTrackElement.NONE = NONE;\nHTMLTrackElement.LOADING = LOADING;\nHTMLTrackElement.LOADED = LOADED;\nHTMLTrackElement.ERROR = ERROR;\n\n/*\n * This file contains all track properties that are used in\n * player.js, tech.js, html5.js and possibly other techs in the future.\n */\n\nvar NORMAL = {\n audio: {\n ListClass: AudioTrackList,\n TrackClass: AudioTrack,\n capitalName: 'Audio'\n },\n video: {\n ListClass: VideoTrackList,\n TrackClass: VideoTrack,\n capitalName: 'Video'\n },\n text: {\n ListClass: TextTrackList,\n TrackClass: TextTrack,\n capitalName: 'Text'\n }\n};\nObject.keys(NORMAL).forEach(function (type) {\n NORMAL[type].getterName = type + \"Tracks\";\n NORMAL[type].privateName = type + \"Tracks_\";\n});\nvar REMOTE = {\n remoteText: {\n ListClass: TextTrackList,\n TrackClass: TextTrack,\n capitalName: 'RemoteText',\n getterName: 'remoteTextTracks',\n privateName: 'remoteTextTracks_'\n },\n remoteTextEl: {\n ListClass: HtmlTrackElementList,\n TrackClass: HTMLTrackElement,\n capitalName: 'RemoteTextTrackEls',\n getterName: 'remoteTextTrackEls',\n privateName: 'remoteTextTrackEls_'\n }\n};\n\nvar ALL = _extends({}, NORMAL, REMOTE);\n\nREMOTE.names = Object.keys(REMOTE);\nNORMAL.names = Object.keys(NORMAL);\nALL.names = [].concat(REMOTE.names).concat(NORMAL.names);\n\n/**\n * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string\n * that just contains the src url alone.\n * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`\n * `var SourceString = 'http://example.com/some-video.mp4';`\n *\n * @typedef {Object|string} Tech~SourceObject\n *\n * @property {string} src\n * The url to the source\n *\n * @property {string} type\n * The mime type of the source\n */\n\n/**\n * A function used by {@link Tech} to create a new {@link TextTrack}.\n *\n * @private\n *\n * @param {Tech} self\n * An instance of the Tech class.\n *\n * @param {string} kind\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n *\n * @param {string} [label]\n * Label to identify the text track\n *\n * @param {string} [language]\n * Two letter language abbreviation\n *\n * @param {Object} [options={}]\n * An object with additional text track options\n *\n * @return {TextTrack}\n * The text track that was created.\n */\n\nfunction createTrackHelper(self, kind, label, language, options) {\n if (options === void 0) {\n options = {};\n }\n\n var tracks = self.textTracks();\n options.kind = kind;\n\n if (label) {\n options.label = label;\n }\n\n if (language) {\n options.language = language;\n }\n\n options.tech = self;\n var track = new ALL.text.TrackClass(options);\n tracks.addTrack(track);\n return track;\n}\n/**\n * This is the base class for media playback technology controllers, such as\n * {@link Flash} and {@link HTML5}\n *\n * @extends Component\n */\n\n\nvar Tech = /*#__PURE__*/function (_Component) {\n _inheritsLoose(Tech, _Component);\n\n /**\n * Create an instance of this Tech.\n *\n * @param {Object} [options]\n * The key/value store of player options.\n *\n * @param {Component~ReadyCallback} ready\n * Callback function to call when the `HTML5` Tech is ready.\n */\n function Tech(options, ready) {\n var _this;\n\n if (options === void 0) {\n options = {};\n }\n\n if (ready === void 0) {\n ready = function ready() {};\n }\n\n // we don't want the tech to report user activity automatically.\n // This is done manually in addControlsListeners\n options.reportTouchActivity = false;\n _this = _Component.call(this, null, options, ready) || this; // keep track of whether the current source has played at all to\n // implement a very limited played()\n\n _this.hasStarted_ = false;\n\n _this.on('playing', function () {\n this.hasStarted_ = true;\n });\n\n _this.on('loadstart', function () {\n this.hasStarted_ = false;\n });\n\n ALL.names.forEach(function (name) {\n var props = ALL[name];\n\n if (options && options[props.getterName]) {\n _this[props.privateName] = options[props.getterName];\n }\n }); // Manually track progress in cases where the browser/flash player doesn't report it.\n\n if (!_this.featuresProgressEvents) {\n _this.manualProgressOn();\n } // Manually track timeupdates in cases where the browser/flash player doesn't report it.\n\n\n if (!_this.featuresTimeupdateEvents) {\n _this.manualTimeUpdatesOn();\n }\n\n ['Text', 'Audio', 'Video'].forEach(function (track) {\n if (options[\"native\" + track + \"Tracks\"] === false) {\n _this[\"featuresNative\" + track + \"Tracks\"] = false;\n }\n });\n\n if (options.nativeCaptions === false || options.nativeTextTracks === false) {\n _this.featuresNativeTextTracks = false;\n } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {\n _this.featuresNativeTextTracks = true;\n }\n\n if (!_this.featuresNativeTextTracks) {\n _this.emulateTextTracks();\n }\n\n _this.preloadTextTracks = options.preloadTextTracks !== false;\n _this.autoRemoteTextTracks_ = new ALL.text.ListClass();\n\n _this.initTrackListeners(); // Turn on component tap events only if not using native controls\n\n\n if (!options.nativeControlsForTouch) {\n _this.emitTapEvents();\n }\n\n if (_this.constructor) {\n _this.name_ = _this.constructor.name || 'Unknown Tech';\n }\n\n return _this;\n }\n /**\n * A special function to trigger source set in a way that will allow player\n * to re-trigger if the player or tech are not ready yet.\n *\n * @fires Tech#sourceset\n * @param {string} src The source string at the time of the source changing.\n */\n\n\n var _proto = Tech.prototype;\n\n _proto.triggerSourceset = function triggerSourceset(src) {\n var _this2 = this;\n\n if (!this.isReady_) {\n // on initial ready we have to trigger source set\n // 1ms after ready so that player can watch for it.\n this.one('ready', function () {\n return _this2.setTimeout(function () {\n return _this2.triggerSourceset(src);\n }, 1);\n });\n }\n /**\n * Fired when the source is set on the tech causing the media element\n * to reload.\n *\n * @see {@link Player#event:sourceset}\n * @event Tech#sourceset\n * @type {EventTarget~Event}\n */\n\n\n this.trigger({\n src: src,\n type: 'sourceset'\n });\n }\n /* Fallbacks for unsupported event types\n ================================================================================ */\n\n /**\n * Polyfill the `progress` event for browsers that don't support it natively.\n *\n * @see {@link Tech#trackProgress}\n */\n ;\n\n _proto.manualProgressOn = function manualProgressOn() {\n this.on('durationchange', this.onDurationChange);\n this.manualProgress = true; // Trigger progress watching when a source begins loading\n\n this.one('ready', this.trackProgress);\n }\n /**\n * Turn off the polyfill for `progress` events that was created in\n * {@link Tech#manualProgressOn}\n */\n ;\n\n _proto.manualProgressOff = function manualProgressOff() {\n this.manualProgress = false;\n this.stopTrackingProgress();\n this.off('durationchange', this.onDurationChange);\n }\n /**\n * This is used to trigger a `progress` event when the buffered percent changes. It\n * sets an interval function that will be called every 500 milliseconds to check if the\n * buffer end percent has changed.\n *\n * > This function is called by {@link Tech#manualProgressOn}\n *\n * @param {EventTarget~Event} event\n * The `ready` event that caused this to run.\n *\n * @listens Tech#ready\n * @fires Tech#progress\n */\n ;\n\n _proto.trackProgress = function trackProgress(event) {\n this.stopTrackingProgress();\n this.progressInterval = this.setInterval(bind(this, function () {\n // Don't trigger unless buffered amount is greater than last time\n var numBufferedPercent = this.bufferedPercent();\n\n if (this.bufferedPercent_ !== numBufferedPercent) {\n /**\n * See {@link Player#progress}\n *\n * @event Tech#progress\n * @type {EventTarget~Event}\n */\n this.trigger('progress');\n }\n\n this.bufferedPercent_ = numBufferedPercent;\n\n if (numBufferedPercent === 1) {\n this.stopTrackingProgress();\n }\n }), 500);\n }\n /**\n * Update our internal duration on a `durationchange` event by calling\n * {@link Tech#duration}.\n *\n * @param {EventTarget~Event} event\n * The `durationchange` event that caused this to run.\n *\n * @listens Tech#durationchange\n */\n ;\n\n _proto.onDurationChange = function onDurationChange(event) {\n this.duration_ = this.duration();\n }\n /**\n * Get and create a `TimeRange` object for buffering.\n *\n * @return {TimeRange}\n * The time range object that was created.\n */\n ;\n\n _proto.buffered = function buffered() {\n return createTimeRanges(0, 0);\n }\n /**\n * Get the percentage of the current video that is currently buffered.\n *\n * @return {number}\n * A number from 0 to 1 that represents the decimal percentage of the\n * video that is buffered.\n *\n */\n ;\n\n _proto.bufferedPercent = function bufferedPercent$1() {\n return bufferedPercent(this.buffered(), this.duration_);\n }\n /**\n * Turn off the polyfill for `progress` events that was created in\n * {@link Tech#manualProgressOn}\n * Stop manually tracking progress events by clearing the interval that was set in\n * {@link Tech#trackProgress}.\n */\n ;\n\n _proto.stopTrackingProgress = function stopTrackingProgress() {\n this.clearInterval(this.progressInterval);\n }\n /**\n * Polyfill the `timeupdate` event for browsers that don't support it.\n *\n * @see {@link Tech#trackCurrentTime}\n */\n ;\n\n _proto.manualTimeUpdatesOn = function manualTimeUpdatesOn() {\n this.manualTimeUpdates = true;\n this.on('play', this.trackCurrentTime);\n this.on('pause', this.stopTrackingCurrentTime);\n }\n /**\n * Turn off the polyfill for `timeupdate` events that was created in\n * {@link Tech#manualTimeUpdatesOn}\n */\n ;\n\n _proto.manualTimeUpdatesOff = function manualTimeUpdatesOff() {\n this.manualTimeUpdates = false;\n this.stopTrackingCurrentTime();\n this.off('play', this.trackCurrentTime);\n this.off('pause', this.stopTrackingCurrentTime);\n }\n /**\n * Sets up an interval function to track current time and trigger `timeupdate` every\n * 250 milliseconds.\n *\n * @listens Tech#play\n * @triggers Tech#timeupdate\n */\n ;\n\n _proto.trackCurrentTime = function trackCurrentTime() {\n if (this.currentTimeInterval) {\n this.stopTrackingCurrentTime();\n }\n\n this.currentTimeInterval = this.setInterval(function () {\n /**\n * Triggered at an interval of 250ms to indicated that time is passing in the video.\n *\n * @event Tech#timeupdate\n * @type {EventTarget~Event}\n */\n this.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n }); // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n }, 250);\n }\n /**\n * Stop the interval function created in {@link Tech#trackCurrentTime} so that the\n * `timeupdate` event is no longer triggered.\n *\n * @listens {Tech#pause}\n */\n ;\n\n _proto.stopTrackingCurrentTime = function stopTrackingCurrentTime() {\n this.clearInterval(this.currentTimeInterval); // #1002 - if the video ends right before the next timeupdate would happen,\n // the progress bar won't make it all the way to the end\n\n this.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n });\n }\n /**\n * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},\n * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.\n *\n * @fires Component#dispose\n */\n ;\n\n _proto.dispose = function dispose() {\n // clear out all tracks because we can't reuse them between techs\n this.clearTracks(NORMAL.names); // Turn off any manual progress or timeupdate tracking\n\n if (this.manualProgress) {\n this.manualProgressOff();\n }\n\n if (this.manualTimeUpdates) {\n this.manualTimeUpdatesOff();\n }\n\n _Component.prototype.dispose.call(this);\n }\n /**\n * Clear out a single `TrackList` or an array of `TrackLists` given their names.\n *\n * > Note: Techs without source handlers should call this between sources for `video`\n * & `audio` tracks. You don't want to use them between tracks!\n *\n * @param {string[]|string} types\n * TrackList names to clear, valid names are `video`, `audio`, and\n * `text`.\n */\n ;\n\n _proto.clearTracks = function clearTracks(types) {\n var _this3 = this;\n\n types = [].concat(types); // clear out all tracks because we can't reuse them between techs\n\n types.forEach(function (type) {\n var list = _this3[type + \"Tracks\"]() || [];\n var i = list.length;\n\n while (i--) {\n var track = list[i];\n\n if (type === 'text') {\n _this3.removeRemoteTextTrack(track);\n }\n\n list.removeTrack(track);\n }\n });\n }\n /**\n * Remove any TextTracks added via addRemoteTextTrack that are\n * flagged for automatic garbage collection\n */\n ;\n\n _proto.cleanupAutoTextTracks = function cleanupAutoTextTracks() {\n var list = this.autoRemoteTextTracks_ || [];\n var i = list.length;\n\n while (i--) {\n var track = list[i];\n this.removeRemoteTextTrack(track);\n }\n }\n /**\n * Reset the tech, which will removes all sources and reset the internal readyState.\n *\n * @abstract\n */\n ;\n\n _proto.reset = function reset() {}\n /**\n * Get or set an error on the Tech.\n *\n * @param {MediaError} [err]\n * Error to set on the Tech\n *\n * @return {MediaError|null}\n * The current error object on the tech, or null if there isn't one.\n */\n ;\n\n _proto.error = function error(err) {\n if (err !== undefined) {\n this.error_ = new MediaError(err);\n this.trigger('error');\n }\n\n return this.error_;\n }\n /**\n * Returns the `TimeRange`s that have been played through for the current source.\n *\n * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.\n * It only checks whether the source has played at all or not.\n *\n * @return {TimeRange}\n * - A single time range if this video has played\n * - An empty set of ranges if not.\n */\n ;\n\n _proto.played = function played() {\n if (this.hasStarted_) {\n return createTimeRanges(0, 0);\n }\n\n return createTimeRanges();\n }\n /**\n * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was\n * previously called.\n *\n * @fires Tech#timeupdate\n */\n ;\n\n _proto.setCurrentTime = function setCurrentTime() {\n // improve the accuracy of manual timeupdates\n if (this.manualTimeUpdates) {\n /**\n * A manual `timeupdate` event.\n *\n * @event Tech#timeupdate\n * @type {EventTarget~Event}\n */\n this.trigger({\n type: 'timeupdate',\n target: this,\n manuallyTriggered: true\n });\n }\n }\n /**\n * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and\n * {@link TextTrackList} events.\n *\n * This adds {@link EventTarget~EventListeners} for `addtrack`, and `removetrack`.\n *\n * @fires Tech#audiotrackchange\n * @fires Tech#videotrackchange\n * @fires Tech#texttrackchange\n */\n ;\n\n _proto.initTrackListeners = function initTrackListeners() {\n var _this4 = this;\n\n /**\n * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}\n *\n * @event Tech#audiotrackchange\n * @type {EventTarget~Event}\n */\n\n /**\n * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}\n *\n * @event Tech#videotrackchange\n * @type {EventTarget~Event}\n */\n\n /**\n * Triggered when tracks are added or removed on the Tech {@link TextTrackList}\n *\n * @event Tech#texttrackchange\n * @type {EventTarget~Event}\n */\n NORMAL.names.forEach(function (name) {\n var props = NORMAL[name];\n\n var trackListChanges = function trackListChanges() {\n _this4.trigger(name + \"trackchange\");\n };\n\n var tracks = _this4[props.getterName]();\n\n tracks.addEventListener('removetrack', trackListChanges);\n tracks.addEventListener('addtrack', trackListChanges);\n\n _this4.on('dispose', function () {\n tracks.removeEventListener('removetrack', trackListChanges);\n tracks.removeEventListener('addtrack', trackListChanges);\n });\n });\n }\n /**\n * Emulate TextTracks using vtt.js if necessary\n *\n * @fires Tech#vttjsloaded\n * @fires Tech#vttjserror\n */\n ;\n\n _proto.addWebVttScript_ = function addWebVttScript_() {\n var _this5 = this;\n\n if (window$1.WebVTT) {\n return;\n } // Initially, Tech.el_ is a child of a dummy-div wait until the Component system\n // signals that the Tech is ready at which point Tech.el_ is part of the DOM\n // before inserting the WebVTT script\n\n\n if (document.body.contains(this.el())) {\n // load via require if available and vtt.js script location was not passed in\n // as an option. novtt builds will turn the above require call into an empty object\n // which will cause this if check to always fail.\n if (!this.options_['vtt.js'] && isPlain(vtt) && Object.keys(vtt).length > 0) {\n this.trigger('vttjsloaded');\n return;\n } // load vtt.js via the script location option or the cdn of no location was\n // passed in\n\n\n var script = document.createElement('script');\n script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';\n\n script.onload = function () {\n /**\n * Fired when vtt.js is loaded.\n *\n * @event Tech#vttjsloaded\n * @type {EventTarget~Event}\n */\n _this5.trigger('vttjsloaded');\n };\n\n script.onerror = function () {\n /**\n * Fired when vtt.js was not loaded due to an error\n *\n * @event Tech#vttjsloaded\n * @type {EventTarget~Event}\n */\n _this5.trigger('vttjserror');\n };\n\n this.on('dispose', function () {\n script.onload = null;\n script.onerror = null;\n }); // but have not loaded yet and we set it to true before the inject so that\n // we don't overwrite the injected window.WebVTT if it loads right away\n\n window$1.WebVTT = true;\n this.el().parentNode.appendChild(script);\n } else {\n this.ready(this.addWebVttScript_);\n }\n }\n /**\n * Emulate texttracks\n *\n */\n ;\n\n _proto.emulateTextTracks = function emulateTextTracks() {\n var _this6 = this;\n\n var tracks = this.textTracks();\n var remoteTracks = this.remoteTextTracks();\n\n var handleAddTrack = function handleAddTrack(e) {\n return tracks.addTrack(e.track);\n };\n\n var handleRemoveTrack = function handleRemoveTrack(e) {\n return tracks.removeTrack(e.track);\n };\n\n remoteTracks.on('addtrack', handleAddTrack);\n remoteTracks.on('removetrack', handleRemoveTrack);\n this.addWebVttScript_();\n\n var updateDisplay = function updateDisplay() {\n return _this6.trigger('texttrackchange');\n };\n\n var textTracksChanges = function textTracksChanges() {\n updateDisplay();\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i];\n track.removeEventListener('cuechange', updateDisplay);\n\n if (track.mode === 'showing') {\n track.addEventListener('cuechange', updateDisplay);\n }\n }\n };\n\n textTracksChanges();\n tracks.addEventListener('change', textTracksChanges);\n tracks.addEventListener('addtrack', textTracksChanges);\n tracks.addEventListener('removetrack', textTracksChanges);\n this.on('dispose', function () {\n remoteTracks.off('addtrack', handleAddTrack);\n remoteTracks.off('removetrack', handleRemoveTrack);\n tracks.removeEventListener('change', textTracksChanges);\n tracks.removeEventListener('addtrack', textTracksChanges);\n tracks.removeEventListener('removetrack', textTracksChanges);\n\n for (var i = 0; i < tracks.length; i++) {\n var track = tracks[i];\n track.removeEventListener('cuechange', updateDisplay);\n }\n });\n }\n /**\n * Create and returns a remote {@link TextTrack} object.\n *\n * @param {string} kind\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n *\n * @param {string} [label]\n * Label to identify the text track\n *\n * @param {string} [language]\n * Two letter language abbreviation\n *\n * @return {TextTrack}\n * The TextTrack that gets created.\n */\n ;\n\n _proto.addTextTrack = function addTextTrack(kind, label, language) {\n if (!kind) {\n throw new Error('TextTrack kind is required but was not provided');\n }\n\n return createTrackHelper(this, kind, label, language);\n }\n /**\n * Create an emulated TextTrack for use by addRemoteTextTrack\n *\n * This is intended to be overridden by classes that inherit from\n * Tech in order to create native or custom TextTracks.\n *\n * @param {Object} options\n * The object should contain the options to initialize the TextTrack with.\n *\n * @param {string} [options.kind]\n * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n *\n * @param {string} [options.label].\n * Label to identify the text track\n *\n * @param {string} [options.language]\n * Two letter language abbreviation.\n *\n * @return {HTMLTrackElement}\n * The track element that gets created.\n */\n ;\n\n _proto.createRemoteTextTrack = function createRemoteTextTrack(options) {\n var track = mergeOptions(options, {\n tech: this\n });\n return new REMOTE.remoteTextEl.TrackClass(track);\n }\n /**\n * Creates a remote text track object and returns an html track element.\n *\n * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.\n *\n * @param {Object} options\n * See {@link Tech#createRemoteTextTrack} for more detailed properties.\n *\n * @param {boolean} [manualCleanup=true]\n * - When false: the TextTrack will be automatically removed from the video\n * element whenever the source changes\n * - When True: The TextTrack will have to be cleaned up manually\n *\n * @return {HTMLTrackElement}\n * An Html Track Element.\n *\n * @deprecated The default functionality for this function will be equivalent\n * to \"manualCleanup=false\" in the future. The manualCleanup parameter will\n * also be removed.\n */\n ;\n\n _proto.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) {\n var _this7 = this;\n\n if (options === void 0) {\n options = {};\n }\n\n var htmlTrackElement = this.createRemoteTextTrack(options);\n\n if (manualCleanup !== true && manualCleanup !== false) {\n // deprecation warning\n log.warn('Calling addRemoteTextTrack without explicitly setting the \"manualCleanup\" parameter to `true` is deprecated and default to `false` in future version of video.js');\n manualCleanup = true;\n } // store HTMLTrackElement and TextTrack to remote list\n\n\n this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);\n this.remoteTextTracks().addTrack(htmlTrackElement.track);\n\n if (manualCleanup !== true) {\n // create the TextTrackList if it doesn't exist\n this.ready(function () {\n return _this7.autoRemoteTextTracks_.addTrack(htmlTrackElement.track);\n });\n }\n\n return htmlTrackElement;\n }\n /**\n * Remove a remote text track from the remote `TextTrackList`.\n *\n * @param {TextTrack} track\n * `TextTrack` to remove from the `TextTrackList`\n */\n ;\n\n _proto.removeRemoteTextTrack = function removeRemoteTextTrack(track) {\n var trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track); // remove HTMLTrackElement and TextTrack from remote list\n\n this.remoteTextTrackEls().removeTrackElement_(trackElement);\n this.remoteTextTracks().removeTrack(track);\n this.autoRemoteTextTracks_.removeTrack(track);\n }\n /**\n * Gets available media playback quality metrics as specified by the W3C's Media\n * Playback Quality API.\n *\n * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n *\n * @return {Object}\n * An object with supported media playback quality metrics\n *\n * @abstract\n */\n ;\n\n _proto.getVideoPlaybackQuality = function getVideoPlaybackQuality() {\n return {};\n }\n /**\n * Attempt to create a floating video window always on top of other windows\n * so that users may continue consuming media while they interact with other\n * content sites, or applications on their device.\n *\n * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n *\n * @return {Promise|undefined}\n * A promise with a Picture-in-Picture window if the browser supports\n * Promises (or one was passed in as an option). It returns undefined\n * otherwise.\n *\n * @abstract\n */\n ;\n\n _proto.requestPictureInPicture = function requestPictureInPicture() {\n var PromiseClass = this.options_.Promise || window$1.Promise;\n\n if (PromiseClass) {\n return PromiseClass.reject();\n }\n }\n /**\n * A method to set a poster from a `Tech`.\n *\n * @abstract\n */\n ;\n\n _proto.setPoster = function setPoster() {}\n /**\n * A method to check for the presence of the 'playsinline'