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/* |
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* Copyright (c) 2017-2018 Rafael da Silva Rocha. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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/** |
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* @fileoverview The WavBuffer class. |
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* @see https://github.com/rochars/wavefile |
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*/ |
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/** |
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* A class representing the data in a wav buffer. |
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*/ |
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export default class WavBuffer { |
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/** |
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* @throws {Error} If no 'RIFF' chunk is found. |
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* @throws {Error} If no 'fmt ' chunk is found. |
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* @throws {Error} If no 'data' chunk is found. |
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*/ |
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constructor() { |
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/** |
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* The container identifier. |
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* 'RIFF', 'RIFX' and 'RF64' are supported. |
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* @type {string} |
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*/ |
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this.container = ''; |
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/** |
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* @type {number} |
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*/ |
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this.chunkSize = 0; |
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/** |
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* The format. |
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* Always 'WAVE'. |
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* @type {string} |
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*/ |
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this.format = ''; |
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/** |
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* The data of the 'fmt' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.fmt = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {number} */ |
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audioFormat: 0, |
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/** @type {number} */ |
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numChannels: 0, |
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/** @type {number} */ |
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sampleRate: 0, |
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/** @type {number} */ |
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byteRate: 0, |
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/** @type {number} */ |
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blockAlign: 0, |
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/** @type {number} */ |
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bitsPerSample: 0, |
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/** @type {number} */ |
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cbSize: 0, |
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/** @type {number} */ |
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validBitsPerSample: 0, |
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/** @type {number} */ |
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dwChannelMask: 0, |
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/** |
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* 4 32-bit values representing a 128-bit ID |
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* @type {!Array<number>} |
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*/ |
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subformat: [] |
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}; |
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/** |
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* The data of the 'fact' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.fact = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {number} */ |
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dwSampleLength: 0 |
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}; |
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/** |
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* The data of the 'cue ' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.cue = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {number} */ |
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dwCuePoints: 0, |
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/** @type {!Array<!Object>} */ |
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points: [], |
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}; |
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/** |
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* The data of the 'smpl' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.smpl = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {number} */ |
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dwManufacturer: 0, |
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/** @type {number} */ |
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dwProduct: 0, |
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/** @type {number} */ |
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dwSamplePeriod: 0, |
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/** @type {number} */ |
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dwMIDIUnityNote: 0, |
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/** @type {number} */ |
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dwMIDIPitchFraction: 0, |
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/** @type {number} */ |
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dwSMPTEFormat: 0, |
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/** @type {number} */ |
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dwSMPTEOffset: 0, |
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/** @type {number} */ |
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dwNumSampleLoops: 0, |
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/** @type {number} */ |
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dwSamplerData: 0, |
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/** @type {!Array<!Object>} */ |
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loops: [] |
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}; |
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/** |
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* The data of the 'bext' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.bext = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {string} */ |
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description: '', //256 |
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/** @type {string} */ |
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originator: '', //32 |
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/** @type {string} */ |
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originatorReference: '', //32 |
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/** @type {string} */ |
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originationDate: '', //10 |
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/** @type {string} */ |
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originationTime: '', //8 |
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/** |
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* 2 32-bit values, timeReference high and low |
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* @type {!Array<number>} |
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*/ |
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timeReference: [0, 0], |
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/** @type {number} */ |
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version: 0, //WORD |
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/** @type {string} */ |
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UMID: '', // 64 chars |
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/** @type {number} */ |
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loudnessValue: 0, //WORD |
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/** @type {number} */ |
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loudnessRange: 0, //WORD |
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/** @type {number} */ |
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maxTruePeakLevel: 0, //WORD |
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/** @type {number} */ |
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maxMomentaryLoudness: 0, //WORD |
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/** @type {number} */ |
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maxShortTermLoudness: 0, //WORD |
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/** @type {string} */ |
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reserved: '', //180 |
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/** @type {string} */ |
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codingHistory: '' // string, unlimited |
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}; |
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/** |
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* The data of the 'ds64' chunk. |
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* Used only with RF64 files. |
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* @type {!Object<string, *>} |
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*/ |
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this.ds64 = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {number} */ |
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riffSizeHigh: 0, // DWORD |
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/** @type {number} */ |
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riffSizeLow: 0, // DWORD |
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/** @type {number} */ |
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dataSizeHigh: 0, // DWORD |
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/** @type {number} */ |
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dataSizeLow: 0, // DWORD |
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/** @type {number} */ |
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originationTime: 0, // DWORD |
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/** @type {number} */ |
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sampleCountHigh: 0, // DWORD |
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/** @type {number} */ |
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sampleCountLow: 0 // DWORD |
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/** @type {number} */ |
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//'tableLength': 0, // DWORD |
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/** @type {!Array<number>} */ |
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//'table': [] |
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}; |
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/** |
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* The data of the 'data' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.data = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {!Uint8Array} */ |
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samples: new Uint8Array(0) |
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}; |
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/** |
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* The data of the 'LIST' chunks. |
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* Each item in this list look like this: |
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* { |
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* chunkId: '', |
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* chunkSize: 0, |
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* format: '', |
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* subChunks: [] |
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* } |
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* @type {!Array<!Object>} |
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*/ |
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this.LIST = []; |
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/** |
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* The data of the 'junk' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.junk = { |
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/** @type {string} */ |
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chunkId: '', |
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/** @type {number} */ |
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chunkSize: 0, |
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/** @type {!Array<number>} */ |
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chunkData: [] |
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}; |
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} |
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} |
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rochars /
wavefile
