49 lines
1.3 KiB
TypeScript
49 lines
1.3 KiB
TypeScript
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import { IGetToken } from 'strtok3/lib/core';
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/**
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* Opus ID Header interface
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* Ref: https://wiki.xiph.org/OggOpus#ID_Header
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*/
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export interface IIdHeader {
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/**
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* Magic signature: "OpusHead" (64 bits)
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*/
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magicSignature: string;
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/**
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* Version number (8 bits unsigned): 0x01 for this spec
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*/
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version: number;
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/**
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* Channel count 'c' (8 bits unsigned): MUST be > 0
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*/
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channelCount: number;
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/**
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* Pre-skip (16 bits unsigned, little endian)
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*/
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preSkip: number;
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/**
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* Input sample rate (32 bits unsigned, little endian): informational only
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*/
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inputSampleRate: number;
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/**
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* Output gain (16 bits, little endian, signed Q7.8 in dB) to apply when decoding
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*/
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outputGain: number;
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/**
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* Channel mapping family (8 bits unsigned)
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* - 0 = one stream: mono or L,R stereo
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* - 1 = channels in vorbis spec order: mono or L,R stereo or ... or FL,C,FR,RL,RR,LFE, ...
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* - 2..254 = reserved (treat as 255)
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* - 255 = no defined channel meaning
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*/
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channelMapping: number;
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}
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/**
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* Opus ID Header parser
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* Ref: https://wiki.xiph.org/OggOpus#ID_Header
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*/
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export declare class IdHeader implements IGetToken<IIdHeader> {
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len: number;
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constructor(len: number);
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get(buf: any, off: any): IIdHeader;
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}
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