65 lines
1.6 KiB
TypeScript
65 lines
1.6 KiB
TypeScript
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/// <reference types="node" />
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import { IGetToken } from 'strtok3/lib/core';
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import { IChunkHeader } from '../iff';
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/**
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* Ref: https://msdn.microsoft.com/en-us/library/windows/desktop/dd317599(v=vs.85).aspx
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*/
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export declare enum WaveFormat {
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PCM = 1,
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ADPCM = 2,
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IEEE_FLOAT = 3,
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MPEG_ADTS_AAC = 5632,
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MPEG_LOAS = 5634,
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RAW_AAC1 = 255,
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DOLBY_AC3_SPDIF = 146,
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DVM = 8192,
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RAW_SPORT = 576,
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ESST_AC3 = 577,
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DRM = 9,
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DTS2 = 8193,
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MPEG = 80
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}
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/**
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* "fmt" sub-chunk describes the sound data's format
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* Ref: http://soundfile.sapp.org/doc/WaveFormat
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*/
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export interface IWaveFormat {
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/**
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* PCM = 1 (i.e. Linear quantization). Values other than 1 indicate some form of compression.
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*/
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wFormatTag: WaveFormat;
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/**
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* Mono = 1, Stereo = 2, etc.
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*/
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nChannels: number;
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/**
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* 8000, 44100, etc.
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*/
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nSamplesPerSec: number;
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nAvgBytesPerSec: number;
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nBlockAlign: number;
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wBitsPerSample: number;
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}
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/**
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* format chunk; chunk-id is "fmt "
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* http://soundfile.sapp.org/doc/WaveFormat/
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*/
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export declare class Format implements IGetToken<IWaveFormat> {
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len: number;
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constructor(header: IChunkHeader);
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get(buf: Buffer, off: number): IWaveFormat;
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}
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export interface IFactChunk {
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dwSampleLength: number;
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}
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/**
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* Fact chunk; chunk-id is "fact"
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* http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html
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* http://www.recordingblogs.com/wiki/fact-chunk-of-a-wave-file
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*/
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export declare class FactChunk implements IGetToken<IFactChunk> {
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len: number;
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constructor(header: IChunkHeader);
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get(buf: Buffer, off: number): IFactChunk;
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}
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