Borewit
41 lines
1.6 KiB
TypeScript
41 lines
1.6 KiB
TypeScript
import { IGetToken } from 'strtok3/lib/core.js';
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import * as Token from 'token-types';
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export interface IBroadcastAudioExtensionChunk {
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description: string;
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originator: string;
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originatorReference: string;
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originationDate: string;
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originationTime: string;
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timeReferenceLow: number,
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timeReferenceHigh: number,
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version: number,
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umid: Uint8Array,
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}
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/**
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* Broadcast Audio Extension Chunk
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* Ref: https://tech.ebu.ch/docs/tech/tech3285.pdf
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*/
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export const BroadcastAudioExtensionChunk: IGetToken<IBroadcastAudioExtensionChunk> = {
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len: 420,
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get: (uint8array, off) => {
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return {
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description: new Token.StringType(256, 'ascii').get(uint8array, off).trim(),
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originator: new Token.StringType(32, 'ascii').get(uint8array, off + 256).trim(),
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originatorReference: new Token.StringType(32, 'ascii').get(uint8array, off + 288).trim(),
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originationDate: new Token.StringType(10, 'ascii').get(uint8array, off + 320).trim(),
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originationTime: new Token.StringType(8, 'ascii').get(uint8array, off + 330).trim(),
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timeReferenceLow: Token.UINT32_LE.get(uint8array, off + 338),
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timeReferenceHigh: Token.UINT32_LE.get(uint8array, off + 342),
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version: Token.UINT16_LE.get(uint8array, off + 346),
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umid: new Token.Uint8ArrayType(64).get(uint8array, off + 348),
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loudnessValue: Token.UINT16_LE.get(uint8array, off + 412),
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maxTruePeakLevel: Token.UINT16_LE.get(uint8array, off + 414),
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maxMomentaryLoudness: Token.UINT16_LE.get(uint8array, off + 416),
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maxShortTermLoudness: Token.UINT16_LE.get(uint8array, off + 418)
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};
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}
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};
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