4 lines
138 KiB
JavaScript
4 lines
138 KiB
JavaScript
|
/*! mp4box 27-05-2019 */
|
||
|
|
|
||
|
|
var Log=function(){var i=new Date,r=4;return{setLogLevel:function(t){r=t==this.debug?1:t==this.info?2:t==this.warn?3:(this.error,4)},debug:function(t,e){void 0===console.debug&&(console.debug=console.log),r<=1&&console.debug("["+Log.getDurationString(new Date-i,1e3)+"]","["+t+"]",e)},log:function(t,e){this.debug(t.msg)},info:function(t,e){r<=2&&console.info("["+Log.getDurationString(new Date-i,1e3)+"]","["+t+"]",e)},warn:function(t,e){r<=3&&console.warn("["+Log.getDurationString(new Date-i,1e3)+"]","["+t+"]",e)},error:function(t,e){r<=4&&console.error("["+Log.getDurationString(new Date-i,1e3)+"]","["+t+"]",e)}}}();Log.getDurationString=function(t,e){var i;function r(t,e){for(var i=(""+t).split(".");i[0].length<e;)i[0]="0"+i[0];return i.join(".")}t<0?(i=!0,t=-t):i=!1;var s=t/(e||1),a=Math.floor(s/3600);s-=3600*a;var n=Math.floor(s/60),o=1e3*(s-=60*n);return o-=1e3*(s=Math.floor(s)),o=Math.floor(o),(i?"-":"")+a+":"+r(n,2)+":"+r(s,2)+"."+r(o,3)},Log.printRanges=function(t){var e=t.length;if(0<e){for(var i="",r=0;r<e;r++)0<r&&(i+=","),i+="["+Log.getDurationString(t.start(r))+","+Log.getDurationString(t.end(r))+"]";return i}return"(empty)"},"undefined"!=typeof exports&&(exports.Log=Log);var MP4BoxStream=function(t){if(!(t instanceof ArrayBuffer))throw"Needs an array buffer";this.buffer=t,this.dataview=new DataView(t),this.position=0};MP4BoxStream.prototype.getPosition=function(){return this.position},MP4BoxStream.prototype.getEndPosition=function(){return this.buffer.byteLength},MP4BoxStream.prototype.getLength=function(){return this.buffer.byteLength},MP4BoxStream.prototype.seek=function(t){var e=Math.max(0,Math.min(this.buffer.byteLength,t));return this.position=isNaN(e)||!isFinite(e)?0:e,!0},MP4BoxStream.prototype.isEos=function(){return this.getPosition()>=this.getEndPosition()},MP4BoxStream.prototype.readAnyInt=function(t,e){var i=0;if(this.position+t<=this.buffer.byteLength){switch(t){case 1:i=e?this.dataview.getInt8(this.position):this.dataview.getUint8(this.position);break;case 2:i=e?this.dataview.getInt16(this.position):this.dataview.getUint16(this.position);break;case 3:if(e)throw"No method for reading signed 24 bits values";i=this.dataview.getUint8(this.position)<<16,i|=this.dataview.getUint8(this.position)<<8,i|=this.dataview.getUint8(this.position);break;case 4:i=e?this.dataview.getInt32(this.position):this.dataview.getUint32(this.position);break;case 8:if(e)throw"No method for reading signed 64 bits values";i=this.dataview.getUint32(this.position)<<32,i|=this.dataview.getUint32(this.position);break;default:throw"readInt method not implemented for size: "+t}return this.position+=t,i}throw"Not enough bytes in buffer"},MP4BoxStream.prototype.readUint8=function(){return this.readAnyInt(1,!1)},MP4BoxStream.prototype.readUint16=function(){return this.readAnyInt(2,!1)},MP4BoxStream.prototype.readUint24=function(){return this.readAnyInt(3,!1)},MP4BoxStream.prototype.readUint32=function(){return this.readAnyInt(4,!1)},MP4BoxStream.prototype.readUint64=function(){return this.readAnyInt(8,!1)},MP4BoxStream.prototype.readString=function(t){if(this.position+t<=this.buffer.byteLength){for(var e="",i=0;i<t;i++)e+=String.fromCharCode(this.readUint8());return e}throw"Not enough bytes in buffer"},MP4BoxStream.prototype.readCString=function(){for(var t=[];;){var e=this.readUint8();if(0===e)break;t.push(e)}return String.fromCharCode.apply(null,t)},MP4BoxStream.prototype.readInt8=function(){return this.readAnyInt(1,!0)},MP4BoxStream.prototype.readInt16=function(){return this.readAnyInt(2,!0)},MP4BoxStream.prototype.readInt32=function(){return this.readAnyInt(4,!0)},MP4BoxStream.prototype.readInt64=function(){return this.readAnyInt(8,!1)},MP4BoxStream.prototype.readUint8Array=function(t){for(var e=new Uint8Array(t),i=0;i<t;i++)e[i]=this.readUint8();return e},MP4BoxStream.prototype.readInt16Array=function(t){for(var e=new Int16Array(t),i=0;i<t;i++)e[i]=this.readInt16();return e},MP4BoxStream.prototype.readUint16Array=function(t){for(var e=new Int16Array(t),i=0;i<t;i++)e[i]=this.readUint16();return e},MP4BoxStream.prototype.readUint32
|
||
|
|
//# sourceMappingURL=mp4box.all.min.js.map
|