!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).ID3Writer=t()}(this,function(){"use strict";function a(e){return String(e).split("").map(function(e){return e.charCodeAt(0)})}function o(e){return new Uint8Array(a(e))}function u(e){var t=new Uint8Array(2*e.length);return new Uint16Array(t.buffer).set(a(e)),t}return function(){var e=t.prototype;function t(e){if(!(e&&"object"==typeof e&&"byteLength"in e))throw new Error("First argument should be an instance of ArrayBuffer or Buffer");this.arrayBuffer=e,this.padding=4096,this.frames=[],this.url=""}return e._setIntegerFrame=function(e,t){var a=parseInt(t,10);this.frames.push({name:e,value:a,size:11+a.toString().length})},e._setStringFrame=function(e,t){var a=t.toString();this.frames.push({name:e,value:a,size:13+2*a.length})},e._setPictureFrame=function(e,t,a,r){var n,s,i,c=function(e){if(!e||!e.length)return null;if(255===e[0]&&216===e[1]&&255===e[2])return"image/jpeg";if(137===e[0]&&80===e[1]&&78===e[2]&&71===e[3])return"image/png";if(71===e[0]&&73===e[1]&&70===e[2])return"image/gif";if(87===e[8]&&69===e[9]&&66===e[10]&&80===e[11])return"image/webp";var t=73===e[0]&&73===e[1]&&42===e[2]&&0===e[3],a=77===e[0]&&77===e[1]&&0===e[2]&&42===e[3];return t||a?"image/tiff":66===e[0]&&77===e[1]?"image/bmp":0===e[0]&&0===e[1]&&1===e[2]&&0===e[3]?"image/x-icon":null}(new Uint8Array(t)),o=a.toString();if(!c)throw new Error("Unknown picture MIME type");a||(r=!1),this.frames.push({name:"APIC",value:t,pictureType:e,mimeType:c,useUnicodeEncoding:r,description:o,size:(n=t.byteLength,s=c.length,i=o.length,11+s+1+1+(r?2+2*(i+1):i+1)+n)})},e._setLyricsFrame=function(e,t,a){var r,n,s=e.split("").map(function(e){return e.charCodeAt(0)}),i=t.toString(),c=a.toString();this.frames.push({name:"USLT",value:c,language:s,description:i,size:(r=i.length,n=c.length,16+2*r+2+2+2*n)})},e._setCommentFrame=function(e,t,a){var r,n,s=e.split("").map(function(e){return e.charCodeAt(0)}),i=t.toString(),c=a.toString();this.frames.push({name:"COMM",value:c,language:s,description:i,size:(r=i.length,n=c.length,16+2*r+2+2+2*n)})},e._setPrivateFrame=function(e,t){var a,r,n=e.toString();this.frames.push({name:"PRIV",value:t,id:n,size:(a=n.length,r=t.byteLength,10+a+1+r)})},e._setUserStringFrame=function(e,t){var a,r,n=e.toString(),s=t.toString();this.frames.push({name:"TXXX",description:n,value:s,size:(a=n.length,r=s.length,13+2*a+2+2+2*r)})},e._setUrlLinkFrame=function(e,t){var a=t.toString();this.frames.push({name:e,value:a,size:10+a.length})},e.setFrame=function(e,t){switch(e){case"TPE1":case"TCOM":case"TCON":if(!Array.isArray(t))throw new Error(e+" frame value should be an array of strings");var a="TCON"===e?";":"/",r=t.join(a);this._setStringFrame(e,r);break;case"TLAN":case"TIT1":case"TIT2":case"TIT3":case"TALB":case"TPE2":case"TPE3":case"TPE4":case"TRCK":case"TPOS":case"TMED":case"TPUB":case"TCOP":case"TKEY":case"TEXT":case"TSRC":this._setStringFrame(e,t);break;case"TBPM":case"TLEN":case"TDAT":case"TYER":this._setIntegerFrame(e,t);break;case"USLT":if(t.language=t.language||"eng",!("object"==typeof t&&"description"in t&&"lyrics"in t))throw new Error("USLT frame value should be an object with keys description and lyrics");if(t.language&&!t.language.match(/[a-z]{3}/i))throw new Error("Language must be coded following the ISO 639-2 standards");this._setLyricsFrame(t.language,t.description,t.lyrics);break;case"APIC":if(!("object"==typeof t&&"type"in t&&"data"in t&&"description"in t))throw new Error("APIC frame value should be an object with keys type, data and description");if(t.type<0||20<t.type)throw new Error("Incorrect APIC frame picture 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frame "+e)}return this},e.removeTag=function(){if(!(this.arrayBuffer.byteLength<10)){var e,t,a=new Uint8Array(this.arrayBuffer),r=a[3],n=((e=[a[6],a[7],a[8],a[9]])[0]<<21)+(e[1]<<14)+(e[2]<<7)+e[3]+10;if(!(73!==(t=a)[0]||68!==t[1]||51!==t[2]||r<2||4<r))this.arrayBuffer=new Uint8Array(a.subarray(n)).buffer}},e.addTag=function(){this.removeTag();var e,t,r=[255,254],a=10+this.frames.reduce(function(e,t){return e+t.size},0)+this.padding,n=new ArrayBuffer(this.arrayBuffer.byteLength+a),s=new Uint8Array(n),i=0,c=[];return c=[73,68,51,3],s.set(c,i),i+=c.length,i++,i++,c=[(e=a-10)>>>21&(t=127),e>>>14&t,e>>>7&t,e&t],s.set(c,i),i+=c.length,this.frames.forEach(function(e){var t,a;switch(c=o(e.name),s.set(c,i),i+=c.length,t=e.size-10,c=[t>>>24&(a=255),t>>>16&a,t>>>8&a,t&a],s.set(c,i),i+=c.length,i+=2,e.name){case"WCOM":case"WCOP":case"WOAF":case"WOAR":case"WOAS":case"WORS":case"WPAY":case"WPUB":c=o(e.value),s.set(c,i),i+=c.length;break;case"TPE1":case"TCOM":case"TCON":case"TLAN":case"TIT1":case"TIT2":case"TIT3":case"TALB":case"TPE2":case"TPE3":case"TPE4":case"TRCK":case"TPOS":case"TKEY":case"TMED":case"TPUB":case"TCOP":case"TEXT":case"TSRC":c=[1].concat(r),s.set(c,i),i+=c.length,c=u(e.value),s.set(c,i),i+=c.length;break;case"TXXX":case"USLT":case"COMM":c=[1],"USLT"!==e.name&&"COMM"!==e.name||(c=c.concat(e.language)),c=c.concat(r),s.set(c,i),i+=c.length,c=u(e.description),s.set(c,i),i+=c.length,c=[0,0].concat(r),s.set(c,i),i+=c.length,c=u(e.value),s.set(c,i),i+=c.length;break;case"TBPM":case"TLEN":case"TDAT":case"TYER":i++,c=o(e.value),s.set(c,i),i+=c.length;break;case"PRIV":c=o(e.id),s.set(c,i),i+=c.length,i++,s.set(new 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