dashjs/dist/dash.offline.min.js

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

/*! For license information please see dash.offline.min.js.LICENSE.txt */
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this._cursor.offset+=e>>3,t},o.prototype._readUint=function(e){var t,r,n=null,o=this._cursor.offset-this._raw.byteOffset;switch(e){case 8:n=this._raw.getUint8(o);break;case 16:n=this._raw.getUint16(o);break;case 24:n=((t=this._raw.getUint16(o))<<8)+(r=this._raw.getUint8(o+2));break;case 32:n=this._raw.getUint32(o);break;case 64:t=this._raw.getUint32(o),r=this._raw.getUint32(o+4),n=t*Math.pow(2,32)+r}return this._cursor.offset+=e>>3,n},o.prototype._readString=function(e){for(var t="",r=0;r<e;r++){var n=this._readUint(8);t+=String.fromCharCode(n)}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 r=new Uint8Array(this._raw.buffer,this._cursor.offset,t);return this._cursor.offset+=t,r}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?r.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){r.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 r=this._cursor.offset-this._rawo.byteOffset;switch(e){case 8:this._rawo.setInt8(r,t);break;case 16:this._rawo.setInt16(r,t);break;case 32:this._rawo.setInt32(r,t);break;case 64:var n=Math.floor(t/Math.pow(2,32)),o=t-n*Math.pow(2,32);this._rawo.setUint32(r,n),this._rawo.setUint32(r+4,o)}this._cursor.offset+=e>>3}else this.size+=e>>3},o.prototype._writeUint=function(e,t){if(this._rawo){var r,n,o=this._cursor.offset-this._rawo.byteOffset;switch(e){case 8:this._rawo.setUint8(o,t);break;case 16:this._rawo.setUint16(o,t);break;case 24:r=(16776960&t)>>8,n=255&t,this._rawo.setUint16(o,r),this._rawo.setUint8(o+2,n);break;case 32:this._rawo.setUint32(o,t);break;case 64:n=t-(r=Math.floor(t/Math.pow(2,32)))*Math.pow(2,32),this._rawo.setUint32(o,r),this._rawo.setUint32(o+4,n)}this._cursor.offset+=e>>3}else this.size+=e>>3},o.prototype._writeString=function(e,t){for(var r=0;r<e;r++)this._writeUint(8,t.charCodeAt(r))},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 r=Math.floor(t),n=(t-r)*Math.pow(2,e/2);this._writeUint(e/2,r),this._writeUint(e/2,n)},o.prototype._writeData=function(e){if(e)if(this._rawo){if(e instanceof Array){for(var t=this._cursor.offset-this._rawo.byteOffset,r=0;r<e.length;r++)this._rawo.setInt8(t+r,e[r]);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=r.Utils.utf8ToByteArray(e);if(this._rawo)for(var n=new DataView(this._rawo.buffer,this._cursor.offset,t.length),o=0;o<t.length;o++)n.setUint8(o,t[o]);else this.size+=t.length},o.prototype._writeField=function(e,t,r){switch(e){case"uint":this._writeUint(t,r);break;case"int":this._writeInt(t,r);break;case"template":this._writeTemplate(t,r);break;case"string":-1==t?this._writeTerminatedString(r):this._writeString(t,r);break;case"data":this._writeData(r);break;case"utf8":this._writeUTF8String(r)}},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.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.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.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.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",32),this._procEntries("entries",this.entry_count,(function(e){this._procEntryField(e,"sample_delta","uint",32),this._procEntryField(e,"subsample_count","uint",16),this._procSubEntries(e,"subsamples",e.subsample_count,(function(e){this._procEntryField(e,"subsample_size","uint",1===this.version?32:16),this._procEntryField(e,"subsample_priority","uint",8),this._procEntryField(e,"discardable","uint",8),this._procEntryField(e,"codec_specific_parameters","uint",32)}))}))},o.prototype._boxProcessors.tenc=function(){this._procFullBox(),this._procField("default_IsEncrypted","uint",24),this._procField("default_IV_size","uint",8),this._procFieldArray("default_KID",16,"uint",8)},o.prototype._boxProcessors.tfdt=function(){this._procFullBox(),this._procField("baseMediaDecodeTime","uint",1==this.version?64:32)},o.prototype._boxProcessors.tfhd=function(){this._procFullBox(),this._procField("track_ID","uint",32),1&this.flags&&this._procField("base_data_offset","uint",64),2&this.flags&&this._procField("sample_description_offset","uint",32),8&this.flags&&this._procField("default_sample_duration","uint",32),16&this.flags&&this._procField("default_sample_size","uint",32),32&this.flags&&this._procField("default_sample_flags","uint",32)},o.prototype._boxProcessors.tfra=function(){this._procFullBox(),this._procField("track_ID","uint",32),this._parsing||(this.reserved=0,this.reserved|=(48&this.length_size_of_traf_num)<<4,this.reserved|=(12&this.length_size_of_trun_num)<<2,this.reserved|=3&this.length_size_of_sample_num),this._procField("reserved","uint",32),this._parsing&&(this.length_size_of_traf_num=(48&this.reserved)>>4,this.length_size_of_trun_num=(12&this.reserved)>>2,this.length_size_of_sample_num=3&this.reserved),this._procField("number_of_entry","uint",32),this._procEntries("entries",this.number_of_entry,(function(e){this._procEntryField(e,"time","uint",1===this.version?64:32),this._procEntryField(e,"moof_offset","uint",1===this.version?64:32),this._procEntryField(e,"traf_number","uint",8*(this.length_size_of_traf_num+1)),this._procEntryField(e,"trun_number","uint",8*(this.length_size_of_trun_num+1)),this._procEntryField(e,"sample_number","uint",8*(this.length_size_of_sample_num+1))}))},o.prototype._boxProcessors.tkhd=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("track_ID","uint",32),this._procField("reserved1","uint",32),this._procField("duration","uint",1==this.version?64:32),this._procFieldArray("reserved2",2,"uint",32),this._procField("layer","uint",16),this._procField("alternate_group","uint",16),this._procField("volume","template",16),this._procField("reserved3","uint",16),this._procFieldArray("matrix",9,"template",32),this._procField("width","template",32),this._procField("height","template",32)},o.prototype._boxProcessors.trex=function(){this._procFullBox(),this._procField("track_ID","uint",32),this._procField("default_sample_description_index","uint",32),this._procField("default_sample_duration","uint",32),this._procField("default_sample_size","uint",32),this._procField("default_sample_flags","uint",32)},o.prototype._boxProcessors.trun=function(){this._procFullBox(),this._procField("sample_count","uint",32),1&this.flags&&this._procField("data_offset","int",32),4&this.flags&&this._procField("first_sample_flags","uint",32),this._procEntries("samples",this.sample_count,(function(e){256&this.flags&&this._procEntryField(e,"sample_duration","uint",32),512&this.flags&&this._procEntryField(e,"sample_size","uint",32),1024&this.flags&&this._procEntryField(e,"sample_flags","uint",32),2048&this.flags&&this._procEntryField(e,"sample_composition_time_offset",1===this.version?"int":"uint",32)}))},o.prototype._boxProcessors["url 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