3 lines
47 KiB
JavaScript
3 lines
47 KiB
JavaScript
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/*! @name mux.js @version 7.1.0 @license Apache-2.0 */
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!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).muxjs=e()}(this,(function(){"use strict";var t;(t=function(e,i){var s,a=0,n=16384,r=function(t,e){var i,s=t.position+e;s<t.bytes.byteLength||((i=new Uint8Array(2*s)).set(t.bytes.subarray(0,t.position),0),t.bytes=i,t.view=new DataView(t.bytes.buffer))},o=t.widthBytes||new Uint8Array("width".length),h=t.heightBytes||new Uint8Array("height".length),p=t.videocodecidBytes||new Uint8Array("videocodecid".length);if(!t.widthBytes){for(s=0;s<"width".length;s++)o[s]="width".charCodeAt(s);for(s=0;s<"height".length;s++)h[s]="height".charCodeAt(s);for(s=0;s<"videocodecid".length;s++)p[s]="videocodecid".charCodeAt(s);t.widthBytes=o,t.heightBytes=h,t.videocodecidBytes=p}switch(this.keyFrame=!1,e){case t.VIDEO_TAG:this.length=16,n*=6;break;case t.AUDIO_TAG:this.length=13,this.keyFrame=!0;break;case t.METADATA_TAG:this.length=29,this.keyFrame=!0;break;default:throw new Error("Unknown FLV tag type")}this.bytes=new Uint8Array(n),this.view=new DataView(this.bytes.buffer),this.bytes[0]=e,this.position=this.length,this.keyFrame=i,this.pts=0,this.dts=0,this.writeBytes=function(t,e,i){var s,a=e||0;s=a+(i=i||t.byteLength),r(this,i),this.bytes.set(t.subarray(a,s),this.position),this.position+=i,this.length=Math.max(this.length,this.position)},this.writeByte=function(t){r(this,1),this.bytes[this.position]=t,this.position++,this.length=Math.max(this.length,this.position)},this.writeShort=function(t){r(this,2),this.view.setUint16(this.position,t),this.position+=2,this.length=Math.max(this.length,this.position)},this.negIndex=function(t){return this.bytes[this.length-t]},this.nalUnitSize=function(){return 0===a?0:this.length-(a+4)},this.startNalUnit=function(){if(a>0)throw new Error("Attempted to create new NAL wihout closing the old one");a=this.length,this.length+=4,this.position=this.length},this.endNalUnit=function(t){var e,i;this.length===a+4?this.length-=4:a>0&&(e=a+4,i=this.length-e,this.position=a,this.view.setUint32(this.position,i),this.position=this.length,t&&t.push(this.bytes.subarray(e,e+i))),a=0},this.writeMetaDataDouble=function(t,e){var i;if(r(this,2+t.length+9),this.view.setUint16(this.position,t.length),this.position+=2,"width"===t)this.bytes.set(o,this.position),this.position+=5;else if("height"===t)this.bytes.set(h,this.position),this.position+=6;else if("videocodecid"===t)this.bytes.set(p,this.position),this.position+=12;else for(i=0;i<t.length;i++)this.bytes[this.position]=t.charCodeAt(i),this.position++;this.position++,this.view.setFloat64(this.position,e),this.position+=8,this.length=Math.max(this.length,this.position),++a},this.writeMetaDataBoolean=function(t,e){var i;for(r(this,2),this.view.setUint16(this.position,t.length),this.position+=2,i=0;i<t.length;i++)r(this,1),this.bytes[this.position]=t.charCodeAt(i),this.position++;r(this,2),this.view.setUint8(this.position,1),this.position++,this.view.setUint8(this.position,e?1:0),this.position++,this.length=Math.max(this.length,this.position),++a},this.finalize=function(){var e,s;switch(this.bytes[0]){case t.VIDEO_TAG:this.bytes[11]=7|(this.keyFrame||i?16:32),this.bytes[12]=i?0:1,e=this.pts-this.dts,this.bytes[13]=(16711680&e)>>>16,this.bytes[14]=(65280&e)>>>8,this.bytes[15]=(255&e)>>>0;break;case t.AUDIO_TAG:this.bytes[11]=175,this.bytes[12]=i?0:1;break;case t.METADATA_TAG:this.position=11,this.view.setUint8(this.position,2),this.position++,this.view.setUint16(this.position,10),this.position+=2,this.bytes.set([111,110,77,101,116,97,68,97,116,97],this.position),this.position+=10,this.bytes[this.position]=8,this.position++,this.view.setUint32(this.position,a),this.position=this.length,this.bytes.set([0,0,9],this.position),this.position+=3,this.length=this.position}return s=this.length-11,this.bytes[1]=(16711680&s)>>>16,this.bytes[2]=(65280&s)>>>8,this.bytes[3]=(255&s)>>>0,this.bytes[4]=(16711680&this.dts)>>>16,this.bytes[5]=(65280&this.dts)>>>8,this.bytes[6]=(255&this.dts)>>>0,this.bytes[7]=(4
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