2 lines
19 KiB
JavaScript
2 lines
19 KiB
JavaScript
|
"use strict";(self.webpackChunkmontana_messenger=self.webpackChunkmontana_messenger||[]).push([[3272],{53272(e,t,a){a.r(t),a.d(t,{MP4Parser:()=>Q});var s=a(17833),n=a(4017),r=a(74604),i=a(68191),o=a(5031),l=a(63324),c=a(56185);const d=s("music-metadata:parser:MP4:atom");class h extends((0,l.fO)("MP4")){}const m={len:8,get:(e,t)=>{const a=n.UINT32_BE.get(e,t);if(a<0)throw new h("Invalid atom header length");return{length:BigInt(a),name:new n.StringType(4,"latin1").get(e,t+4)}},put:(e,t,a)=>(n.UINT32_BE.put(e,t,Number(a.length)),o.e.put(e,t+4,a.name))},g=n.UINT64_BE,p={len:4,get:(e,t)=>({type:new n.StringType(4,"ascii").get(e,t)})};class u{constructor(e,t,a){if(e<t)throw new h(`Atom ${a} expected to be ${t}, but specifies ${e} bytes long.`);e>t&&d(`Warning: atom ${a} expected to be ${t}, but was actually ${e} bytes long.`),this.len=e}}const f=(e,t)=>{const a=n.UINT32_BE.get(e,t)-2082844800;return new Date(1e3*a)};class T extends u{constructor(e){super(e,24,"mdhd")}get(e,t){return{version:n.UINT8.get(e,t+0),flags:n.UINT24_BE.get(e,t+1),creationTime:f(e,t+4),modificationTime:f(e,t+8),timeScale:n.UINT32_BE.get(e,t+12),duration:n.UINT32_BE.get(e,t+16),language:n.UINT16_BE.get(e,t+20),quality:n.UINT16_BE.get(e,t+22)}}}class k extends u{constructor(e){super(e,100,"mvhd")}get(e,t){return{version:n.UINT8.get(e,t),flags:n.UINT24_BE.get(e,t+1),creationTime:f(e,t+4),modificationTime:f(e,t+8),timeScale:n.UINT32_BE.get(e,t+12),duration:n.UINT32_BE.get(e,t+16),preferredRate:n.UINT32_BE.get(e,t+20),preferredVolume:n.UINT16_BE.get(e,t+24),previewTime:n.UINT32_BE.get(e,t+72),previewDuration:n.UINT32_BE.get(e,t+76),posterTime:n.UINT32_BE.get(e,t+80),selectionTime:n.UINT32_BE.get(e,t+84),selectionDuration:n.UINT32_BE.get(e,t+88),currentTime:n.UINT32_BE.get(e,t+92),nextTrackID:n.UINT32_BE.get(e,t+96)}}}class I{constructor(e){this.len=e}get(e,t){return{type:{set:n.UINT8.get(e,t+0),type:n.UINT24_BE.get(e,t+1)},locale:n.UINT24_BE.get(e,t+4),value:new n.Uint8ArrayType(this.len-8).get(e,t+8)}}}class w{constructor(e){this.len=e}get(e,t){return{version:n.UINT8.get(e,t),flags:n.UINT24_BE.get(e,t+1),name:new n.StringType(this.len-4,"utf-8").get(e,t+4)}}}class N{constructor(e){this.len=e}get(e,t){return{version:n.UINT8.get(e,t),flags:n.UINT24_BE.get(e,t+1),creationTime:f(e,t+4),modificationTime:f(e,t+8),trackId:n.UINT32_BE.get(e,t+12),duration:n.UINT32_BE.get(e,t+20),layer:n.UINT16_BE.get(e,t+24),alternateGroup:n.UINT16_BE.get(e,t+26),volume:n.UINT16_BE.get(e,t+28)}}}class E{constructor(e){this.len=e}get(e,t){const a=this.len-12;return{dataFormat:o.e.get(e,t),dataReferenceIndex:n.UINT16_BE.get(e,t+10),description:a>0?new n.Uint8ArrayType(a).get(e,t+12):void 0}}}class y{constructor(e){this.len=e}get(e,t){const a=((e,t)=>({version:n.UINT8.get(e,t),flags:n.UINT24_BE.get(e,t+1),numberOfEntries:n.UINT32_BE.get(e,t+4)}))(e,t);t+=8;const s=[];for(let r=0;r<a.numberOfEntries;++r){const a=n.UINT32_BE.get(e,t);t+=n.UINT32_BE.len,s.push(new E(a-n.UINT32_BE.len).get(e,t)),t+=a}return{header:a,table:s}}}const B=8,b=(e,t)=>({version:n.INT16_BE.get(e,t),revision:n.INT16_BE.get(e,t+2),vendor:n.INT32_BE.get(e,t+4)}),S=(e,t)=>({numAudioChannels:n.INT16_BE.get(e,t+0),sampleSize:n.INT16_BE.get(e,t+2),compressionId:n.INT16_BE.get(e,t+4),packetSize:n.INT16_BE.get(e,t+6),sampleRate:n.UINT16_BE.get(e,t+8)+n.UINT16_BE.get(e,t+10)/1e4});class _{constructor(e,t){this.len=e,this.token=t}get(e,t){const a=n.INT32_BE.get(e,t+4);return{version:n.INT8.get(e,t+0),flags:n.INT24_BE.get(e,t+1),numberOfEntries:a,entries:D(e,this.token,t+8,this.len-8,a)}}}const U={len:8,get:(e,t)=>({count:n.INT32_BE.get(e,t+0),duration:n.INT32_BE.get(e,t+4)})};class z extends _{constructor(e){super(e,U)}}const P={len:12,get:(e,t)=>({firstChunk:n.INT32_BE.get(e,t),samplesPerChunk:n.INT32_BE.get(e,t+4),sampleDescriptionId:n.INT32_BE.get(e,t+8)})};class v extends _{constructor(e){super(e,P)}}class C{constructor(e){this.len=e}get(e,t){const a=n.INT32_BE.get(e,t+8);return{version:n.INT8.get(e,t),flags:n.INT24_BE.get(e,t+1),sampleSize:n.INT32_BE.get(e,t+4),numberOfEntries:a,entries:D(e,n.INT32_BE,t+12,this.len-1
|
||
|
|
//# sourceMappingURL=3272.4d300c08438e8e082d3f.js.map
|