dashjs/dist/legacy/umd/dash.all.min.js

A reference client implementation for the playback of MPEG DASH via Javascript and compliant browsers.

/*! For license information please see dash.all.min.js.LICENSE.txt */
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r=e.charCodeAt(n);r<128?t.push(r):r<2048?(t.push(192|r>>6),t.push(128|63&r)):r<65536?(t.push(224|r>>12),t.push(128|63&r>>6),t.push(128|63&r)):(t.push(240|r>>18),t.push(128|63&r>>12),t.push(128|63&r>>6),t.push(128|63&r))}return t},i.Utils.appendBox=function(e,t,n){if(t._offset=e._cursor.offset,t._root=e._root?e._root:e,t._raw=e._raw,t._parent=e,-1!==n)if(null!=n){var i,a=-1;if("number"==typeof n)a=n;else{if("string"==typeof n)i=n;else{if("object"!==r(n)||!n.type)return void e.boxes.push(t);i=n.type}for(var o=0;o<e.boxes.length;o++)if(i===e.boxes[o].type){a=o+1;break}}e.boxes.splice(a,0,t)}else e.boxes.push(t)},t.parseBuffer=i.parseBuffer,t.addBoxProcessor=i.addBoxProcessor,t.createFile=i.createFile,t.createBox=i.createBox,t.createFullBox=i.createFullBox,t.Utils=i.Utils,i.Cursor=function(e){this.offset=void 0===e?0:e};var a=function(e){this._cursor=new i.Cursor,this.boxes=[],e&&(this._raw=new DataView(e))};a.prototype.fetch=function(e){var t=this.fetchAll(e,!0);return t.length?t[0]:null},a.prototype.fetchAll=function(e,t){var n=[];return a._sweep.call(this,e,n,t),n},a.prototype.parse=function(){for(this._cursor.offset=0,this.boxes=[];this._cursor.offset<this._raw.byteLength;){var e=o.parse(this);if(void 0===e.type)break;this.boxes.push(e)}return this},a._sweep=function(e,t,n){for(var r in this.type&&this.type==e&&t.push(this),this.boxes){if(t.length&&n)return;a._sweep.call(this.boxes[r],e,t,n)}},a.prototype.write=function(){var e,t=0;for(e=0;e<this.boxes.length;e++)t+=this.boxes[e].getLength(!1);var n=new Uint8Array(t);for(this._rawo=new DataView(n.buffer),this.bytes=n,this._cursor.offset=0,e=0;e<this.boxes.length;e++)this.boxes[e].write();return n.buffer},a.prototype.append=function(e,t){i.Utils.appendBox(this,e,t)};var o=function(){this._cursor=new i.Cursor};o.parse=function(e){var t=new o;return t._offset=e._cursor.offset,t._root=e._root?e._root:e,t._raw=e._raw,t._parent=e,t._parseBox(),e._cursor.offset=t._raw.byteOffset+t._raw.byteLength,t},o.create=function(e){var t=new o;return t.type=e,t.boxes=[],t},o.prototype._boxContainers=["dinf","edts","mdia","meco","mfra","minf","moof","moov","mvex","stbl","strk","traf","trak","tref","udta","vttc","sinf","schi","encv","enca","meta","grpl","prsl"],o.prototype._boxProcessors={},o.prototype._procField=function(e,t,n){this._parsing?this[e]=this._readField(t,n):this._writeField(t,n,this[e])},o.prototype._procFieldArray=function(e,t,n,r){var i;if(this._parsing)for(this[e]=[],i=0;i<t;i++)this[e][i]=this._readField(n,r);else for(i=0;i<this[e].length;i++)this._writeField(n,r,this[e][i])},o.prototype._procFullBox=function(){this._procField("version","uint",8),this._procField("flags","uint",24)},o.prototype._procEntries=function(e,t,n){var r;if(this._parsing)for(this[e]=[],r=0;r<t;r++)this[e].push({}),n.call(this,this[e][r]);else for(r=0;r<t;r++)n.call(this,this[e][r])},o.prototype._procSubEntries=function(e,t,n,r){var i;if(this._parsing)for(e[t]=[],i=0;i<n;i++)e[t].push({}),r.call(this,e[t][i]);else for(i=0;i<n;i++)r.call(this,e[t][i])},o.prototype._procEntryField=function(e,t,n,r){this._parsing?e[t]=this._readField(n,r):this._writeField(n,r,e[t])},o.prototype._procSubBoxes=function(e,t){var n;if(this._parsing)for(this[e]=[],n=0;n<t;n++)this[e].push(o.parse(this));else for(n=0;n<t;n++)this._rawo?this[e][n].write():this.size+=this[e][n].getLength()},o.prototype._readField=function(e,t){switch(e){case"uint":return this._readUint(t);case"int":return this._readInt(t);case"template":return this._readTemplate(t);case"string":return-1===t?this._readTerminatedString():this._readString(t);case"data":return this._readData(t);case"utf8":return this._readUTF8String();case"utf8string":return this._readUTF8TerminatedString();default:return-1}},o.prototype._readInt=function(e){var t=null,n=this._cursor.offset-this._raw.byteOffset;switch(e){case 8:t=this._raw.getInt8(n);break;case 16:t=this._raw.getInt16(n);break;case 32:t=this._raw.getInt32(n);break;case 64:var r=this._raw.getInt32(n),i=this._raw.getInt32(n+4);t=r*Math.pow(2,32)+i}return this._cursor.offset+=e>>3,t},o.prototype._readUint=function(e){var t,n,r=null,i=this._cursor.offset-this._raw.byteOffset;switch(e){case 8:r=this._raw.getUint8(i);break;case 16:r=this._raw.getUint16(i);break;case 24:r=((t=this._raw.getUint16(i))<<8)+(n=this._raw.getUint8(i+2));break;case 32:r=this._raw.getUint32(i);break;case 64:t=this._raw.getUint32(i),n=this._raw.getUint32(i+4),r=t*Math.pow(2,32)+n}return this._cursor.offset+=e>>3,r},o.prototype._readString=function(e){for(var t="",n=0;n<e;n++){var r=this._readUint(8);t+=String.fromCharCode(r)}return t},o.prototype._readTemplate=function(e){return this._readUint(e/2)+this._readUint(e/2)/Math.pow(2,e/2)},o.prototype._readTerminatedString=function(){for(var e="";this._cursor.offset-this._offset<this._raw.byteLength;){var t=this._readUint(8);if(0===t)break;e+=String.fromCharCode(t)}return e},o.prototype._readData=function(e){var t=e>0?e:this._raw.byteLength-(this._cursor.offset-this._offset);if(t>0){var n=new Uint8Array(this._raw.buffer,this._cursor.offset,t);return this._cursor.offset+=t,n}return null},o.prototype._readUTF8String=function(){var e=this._raw.byteLength-(this._cursor.offset-this._offset),t=null;return e>0&&(t=new DataView(this._raw.buffer,this._cursor.offset,e),this._cursor.offset+=e),t?i.Utils.dataViewToString(t):t},o.prototype._readUTF8TerminatedString=function(){var e=this._raw.byteLength-(this._cursor.offset-this._offset),t=null;if(e>0){var n;for(t=new DataView(this._raw.buffer,this._cursor.offset,e),n=0;n<e&&0!==t.getUint8(n);n++);t=new DataView(this._raw.buffer,this._cursor.offset,n),this._cursor.offset+=Math.min(n+1,e)}return t?i.Utils.dataViewToString(t):t},o.prototype._parseBox=function(){if(this._parsing=!0,this._cursor.offset=this._offset,this._offset+8>this._raw.buffer.byteLength)this._root._incomplete=!0;else{switch(this._procField("size","uint",32),this._procField("type","string",4),1===this.size&&this._procField("largesize","uint",64),"uuid"===this.type&&this._procFieldArray("usertype",16,"uint",8),this.size){case 0:this._raw=new DataView(this._raw.buffer,this._offset);break;case 1:this._offset+this.size>this._raw.buffer.byteLength?(this._incomplete=!0,this._root._incomplete=!0):this._raw=new DataView(this._raw.buffer,this._offset,this.largesize);break;default:this._offset+this.size>this._raw.buffer.byteLength?(this._incomplete=!0,this._root._incomplete=!0):this._raw=new DataView(this._raw.buffer,this._offset,this.size)}this._incomplete||(this._boxProcessors[this.type]&&this._boxProcessors[this.type].call(this),-1!==this._boxContainers.indexOf(this.type)?this._parseContainerBox():this._data=this._readData())}},o.prototype._parseFullBox=function(){this.version=this._readUint(8),this.flags=this._readUint(24)},o.prototype._parseContainerBox=function(){for(this.boxes=[];this._cursor.offset-this._raw.byteOffset<this._raw.byteLength;)this.boxes.push(o.parse(this))},o.prototype.append=function(e,t){i.Utils.appendBox(this,e,t)},o.prototype.getLength=function(){if(this._parsing=!1,this._rawo=null,this.size=0,this._procField("size","uint",32),this._procField("type","string",4),1===this.size&&this._procField("largesize","uint",64),"uuid"===this.type&&this._procFieldArray("usertype",16,"uint",8),this._boxProcessors[this.type]&&this._boxProcessors[this.type].call(this),-1!==this._boxContainers.indexOf(this.type))for(var e=0;e<this.boxes.length;e++)this.size+=this.boxes[e].getLength();return this._data&&this._writeData(this._data),this.size},o.prototype.write=function(){switch(this._parsing=!1,this._cursor.offset=this._parent._cursor.offset,this.size){case 0:this._rawo=new DataView(this._parent._rawo.buffer,this._cursor.offset,this.parent._rawo.byteLength-this._cursor.offset);break;case 1:this._rawo=new DataView(this._parent._rawo.buffer,this._cursor.offset,this.largesize);break;default:this._rawo=new DataView(this._parent._rawo.buffer,this._cursor.offset,this.size)}if(this._procField("size","uint",32),this._procField("type","string",4),1===this.size&&this._procField("largesize","uint",64),"uuid"===this.type&&this._procFieldArray("usertype",16,"uint",8),this._boxProcessors[this.type]&&this._boxProcessors[this.type].call(this),-1!==this._boxContainers.indexOf(this.type))for(var e=0;e<this.boxes.length;e++)this.boxes[e].write();return this._data&&this._writeData(this._data),this._parent._cursor.offset+=this.size,this.size},o.prototype._writeInt=function(e,t){if(this._rawo){var n=this._cursor.offset-this._rawo.byteOffset;switch(e){case 8:this._rawo.setInt8(n,t);break;case 16:this._rawo.setInt16(n,t);break;case 32:this._rawo.setInt32(n,t);break;case 64:var r=Math.floor(t/Math.pow(2,32)),i=t-r*Math.pow(2,32);this._rawo.setUint32(n,r),this._rawo.setUint32(n+4,i)}this._cursor.offset+=e>>3}else this.size+=e>>3},o.prototype._writeUint=function(e,t){if(this._rawo){var n,r,i=this._cursor.offset-this._rawo.byteOffset;switch(e){case 8:this._rawo.setUint8(i,t);break;case 16:this._rawo.setUint16(i,t);break;case 24:n=(16776960&t)>>8,r=255&t,this._rawo.setUint16(i,n),this._rawo.setUint8(i+2,r);break;case 32:this._rawo.setUint32(i,t);break;case 64:r=t-(n=Math.floor(t/Math.pow(2,32)))*Math.pow(2,32),this._rawo.setUint32(i,n),this._rawo.setUint32(i+4,r)}this._cursor.offset+=e>>3}else this.size+=e>>3},o.prototype._writeString=function(e,t){for(var n=0;n<e;n++)this._writeUint(8,t.charCodeAt(n))},o.prototype._writeTerminatedString=function(e){if(0!==e.length){for(var t=0;t<e.length;t++)this._writeUint(8,e.charCodeAt(t));this._writeUint(8,0)}},o.prototype._writeTemplate=function(e,t){var n=Math.floor(t),r=(t-n)*Math.pow(2,e/2);this._writeUint(e/2,n),this._writeUint(e/2,r)},o.prototype._writeData=function(e){if(e)if(this._rawo){if(e instanceof Array){for(var t=this._cursor.offset-this._rawo.byteOffset,n=0;n<e.length;n++)this._rawo.setInt8(t+n,e[n]);this._cursor.offset+=e.length}e instanceof Uint8Array&&(this._root.bytes.set(e,this._cursor.offset),this._cursor.offset+=e.length)}else this.size+=e.length},o.prototype._writeUTF8String=function(e){var t=i.Utils.utf8ToByteArray(e);if(this._rawo)for(var n=new DataView(this._rawo.buffer,this._cursor.offset,t.length),r=0;r<t.length;r++)n.setUint8(r,t[r]);else this.size+=t.length},o.prototype._writeField=function(e,t,n){switch(e){case"uint":this._writeUint(t,n);break;case"int":this._writeInt(t,n);break;case"template":this._writeTemplate(t,n);break;case"string":-1==t?this._writeTerminatedString(n):this._writeString(t,n);break;case"data":this._writeData(n);break;case"utf8":this._writeUTF8String(n)}},o.prototype._boxProcessors.ardi=function(){this._procFullBox(),this._procField("audio_rendering_indication","uint",8)},o.prototype._boxProcessors.avc1=o.prototype._boxProcessors.avc2=o.prototype._boxProcessors.avc3=o.prototype._boxProcessors.avc4=o.prototype._boxProcessors.hvc1=o.prototype._boxProcessors.hev1=o.prototype._boxProcessors.encv=function(){this._procFieldArray("reserved1",6,"uint",8),this._procField("data_reference_index","uint",16),this._procField("pre_defined1","uint",16),this._procField("reserved2","uint",16),this._procFieldArray("pre_defined2",3,"uint",32),this._procField("width","uint",16),this._procField("height","uint",16),this._procField("horizresolution","template",32),this._procField("vertresolution","template",32),this._procField("reserved3","uint",32),this._procField("frame_count","uint",16),this._procFieldArray("compressorname",32,"uint",8),this._procField("depth","uint",16),this._procField("pre_defined3","int",16),this._procField("config","data",-1)},o.prototype._boxProcessors.ctts=function(){this._procFullBox(),this._procField("entry_count","uint",32),this._procEntries("entries",this.entry_count,(function(e){this._procEntryField(e,"sample_count","uint",32),this._procEntryField(e,"sample_offset",1===this.version?"int":"uint",32)}))},o.prototype._boxProcessors.dref=function(){this._procFullBox(),this._procField("entry_count","uint",32),this._procSubBoxes("entries",this.entry_count)},o.prototype._boxProcessors.elng=function(){this._procFullBox(),this._procField("extended_language","utf8string")},o.prototype._boxProcessors.elst=function(){this._procFullBox(),this._procField("entry_count","uint",32),this._procEntries("entries",this.entry_count,(function(e){this._procEntryField(e,"segment_duration","uint",1===this.version?64:32),this._procEntryField(e,"media_time","int",1===this.version?64:32),this._procEntryField(e,"media_rate_integer","int",16),this._procEntryField(e,"media_rate_fraction","int",16)}))},o.prototype._boxProcessors.emsg=function(){this._procFullBox(),1==this.version?(this._procField("timescale","uint",32),this._procField("presentation_time","uint",64),this._procField("event_duration","uint",32),this._procField("id","uint",32),this._procField("scheme_id_uri","string",-1),this._procField("value","string",-1)):(this._procField("scheme_id_uri","string",-1),this._procField("value","string",-1),this._procField("timescale","uint",32),this._procField("presentation_time_delta","uint",32),this._procField("event_duration","uint",32),this._procField("id","uint",32)),this._procField("message_data","data",-1)},o.prototype._boxProcessors.free=o.prototype._boxProcessors.skip=function(){this._procField("data","data",-1)},o.prototype._boxProcessors.frma=function(){this._procField("data_format","uint",32)},o.prototype._boxProcessors.ftyp=o.prototype._boxProcessors.styp=function(){this._procField("major_brand","string",4),this._procField("minor_version","uint",32);var e=-1;this._parsing&&(e=(this._raw.byteLength-(this._cursor.offset-this._raw.byteOffset))/4),this._procFieldArray("compatible_brands",e,"string",4)},o.prototype._boxProcessors.hdlr=function(){this._procFullBox(),this._procField("pre_defined","uint",32),this._procField("handler_type","string",4),this._procFieldArray("reserved",3,"uint",32),this._procField("name","string",-1)},o.prototype._boxProcessors.imda=function(){this._procField("imda_identifier","uint",32),this._procField("data","data",-1)},o.prototype._boxProcessors.kind=function(){this._procFullBox(),this._procField("schemeURI","utf8string"),this._procField("value","utf8string")},o.prototype._boxProcessors.labl=function(){this._procFullBox(),this.is_group_label=!!(1&this.flags),this._procField("label_id","uint",16),this._procField("language","utf8string"),this._procField("label","utf8string")},o.prototype._boxProcessors.mdat=function(){this._procField("data","data",-1)},o.prototype._boxProcessors.mdhd=function(){this._procFullBox(),this._procField("creation_time","uint",1==this.version?64:32),this._procField("modification_time","uint",1==this.version?64:32),this._procField("timescale","uint",32),this._procField("duration","uint",1==this.version?64:32),this._parsing||"string"!=typeof this.language||(this.language=this.language.charCodeAt(0)-96<<10|this.language.charCodeAt(1)-96<<5|this.language.charCodeAt(2)-96),this._procField("language","uint",16),this._parsing&&(this.language=String.fromCharCode(96+(this.language>>10&31),96+(this.language>>5&31),96+(31&this.language))),this._procField("pre_defined","uint",16)},o.prototype._boxProcessors.mehd=function(){this._procFullBox(),this._procField("fragment_duration","uint",1==this.version?64:32)},o.prototype._boxProcessors.meta=function(){this._procFullBox()},o.prototype._boxProcessors.mfhd=function(){this._procFullBox(),this._procField("sequence_number","uint",32)},o.prototype._boxProcessors.mfro=function(){this._procFullBox(),this._procField("mfra_size","uint",32)},o.prototype._boxProcessors.mp4a=o.prototype._boxProcessors.enca=function(){this._procFieldArray("reserved1",6,"uint",8),this._procField("data_reference_index","uint",16),this._procFieldArray("reserved2",2,"uint",32),this._procField("channelcount","uint",16),this._procField("samplesize","uint",16),this._procField("pre_defined","uint",16),this._procField("reserved3","uint",16),this._procField("samplerate","template",32),this._procField("esds","data",-1)},o.prototype._boxProcessors.mvhd=function(){this._procFullBox(),this._procField("creation_time","uint",1==this.version?64:32),this._procField("modification_time","uint",1==this.version?64:32),this._procField("timescale","uint",32),this._procField("duration","uint",1==this.version?64:32),this._procField("rate","template",32),this._procField("volume","template",16),this._procField("reserved1","uint",16),this._procFieldArray("reserved2",2,"uint",32),this._procFieldArray("matrix",9,"template",32),this._procFieldArray("pre_defined",6,"uint",32),this._procField("next_track_ID","uint",32)},o.prototype._boxProcessors.payl=function(){this._procField("cue_text","utf8")},o.prototype._boxProcessors.prft=function(){this._procFullBox(),this._procField("reference_track_ID","uint",32),this._procField("ntp_timestamp_sec","uint",32),this._procField("ntp_timestamp_frac","uint",32),this._procField("media_time","uint",1==this.version?64:32)},o.prototype._boxProcessors.prsl=function(){this._procFullBox(),this._procField("group_id","uint",32),this._procField("num_entities_in_group","uint",32),this._procEntries("entities",this.num_entities_in_group,(function(e){this._procEntryField(e,"entity_id","uint",32)})),4096&this.flags&&this._procField("preselection_tag","utf8string"),8192&this.flags&&this._procField("selection_priority","uint",8),16384&this.flags&&this._procField("interleaving_tag","utf8string")},o.prototype._boxProcessors.pssh=function(){this._procFullBox(),this._procFieldArray("SystemID",16,"uint",8),this._procField("DataSize","uint",32),this._procFieldArray("Data",this.DataSize,"uint",8)},o.prototype._boxProcessors.schm=function(){this._procFullBox(),this._procField("scheme_type","uint",32),this._procField("scheme_version","uint",32),1&this.flags&&this._procField("scheme_uri","string",-1)},o.prototype._boxProcessors.sdtp=function(){this._procFullBox();var e=-1;this._parsing&&(e=this._raw.byteLength-(this._cursor.offset-this._raw.byteOffset)),this._procFieldArray("sample_dependency_table",e,"uint",8)},o.prototype._boxProcessors.sidx=function(){this._procFullBox(),this._procField("reference_ID","uint",32),this._procField("timescale","uint",32),this._procField("earliest_presentation_time","uint",1==this.version?64:32),this._procField("first_offset","uint",1==this.version?64:32),this._procField("reserved","uint",16),this._procField("reference_count","uint",16),this._procEntries("references",this.reference_count,(function(e){this._parsing||(e.reference=(1&e.reference_type)<<31,e.reference|=2147483647&e.referenced_size,e.sap=(1&e.starts_with_SAP)<<31,e.sap|=(3&e.SAP_type)<<28,e.sap|=268435455&e.SAP_delta_time),this._procEntryField(e,"reference","uint",32),this._procEntryField(e,"subsegment_duration","uint",32),this._procEntryField(e,"sap","uint",32),this._parsing&&(e.reference_type=e.reference>>31&1,e.referenced_size=2147483647&e.reference,e.starts_with_SAP=e.sap>>31&1,e.SAP_type=e.sap>>28&7,e.SAP_delta_time=268435455&e.sap)}))},o.prototype._boxProcessors.smhd=function(){this._procFullBox(),this._procField("balance","uint",16),this._procField("reserved","uint",16)},o.prototype._boxProcessors.ssix=function(){this._procFullBox(),this._procField("subsegment_count","uint",32),this._procEntries("subsegments",this.subsegment_count,(function(e){this._procEntryField(e,"ranges_count","uint",32),this._procSubEntries(e,"ranges",e.ranges_count,(function(e){this._procEntryField(e,"level","uint",8),this._procEntryField(e,"range_size","uint",24)}))}))},o.prototype._boxProcessors.stsd=function(){this._procFullBox(),this._procField("entry_count","uint",32),this._procSubBoxes("entries",this.entry_count)},o.prototype._boxProcessors.sttg=function(){this._procField("settings","utf8")},o.prototype._boxProcessors.stts=function(){this._procFullBox(),this._procField("entry_count","uint",32),this._procEntries("entries",this.entry_count,(function(e){this._procEntryField(e,"sample_count","uint",32),this._procEntryField(e,"sample_delta","uint",32)}))},o.prototype._boxProcessors.subs=function(){this._procFullBox(),this._procField("entry_count","uint