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/* |
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* Copyright (c) 2017-2019 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 WaveFileReader class. |
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* @see https://github.com/rochars/wavefile |
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*/ |
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import { RIFFFile } from "./riff-file"; |
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import { unpackString, unpack } from "./parsers/binary"; |
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/** |
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* A class to read wav files. |
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* @extends RIFFFile |
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*/ |
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export class WaveFileReader extends RIFFFile { |
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constructor() { |
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super(); |
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// Include 'RF64' as a supported container format |
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this.supported_containers.push("RF64"); |
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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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* MPEG additional format information |
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* when audioFormat == 80 |
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* https://tech.ebu.ch/docs/tech/tech3285s1.pdf |
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*/ |
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/** @type {number} */ |
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headLayer: 0, |
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/** @type {number} */ |
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headBitRate: 0, |
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/** @type {number} */ |
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headMode: 0, |
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/** @type {number} */ |
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headModeExt: 0, |
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/** @type {number} */ |
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headEmphasis: 0, |
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/** @type {number} */ |
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headFlags: 0, |
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/** @type {number} */ |
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ptsLow: 0, |
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/** @type {number} */ |
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ptsHigh: 0 |
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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 'mext' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.mext = { |
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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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soundInformation: 0, |
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/** @type {number} */ |
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frameSize: 0, |
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/** @type {number} */ |
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ancillaryDataLength: 0, |
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/** @type {number} */ |
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ancillaryDataDef: 0, //4 |
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/** @type {string} */ |
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reserved: "" |
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}; |
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/** |
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* The cart of the cart chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.cart = { |
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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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version: "", |
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/** @type {string} */ |
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title: "", |
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/** @type {string} */ |
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artist: "", |
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/** @type {string} */ |
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cutId: "", |
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/** @type {string} */ |
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clientId: "", |
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/** @type {string} */ |
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category: "", |
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/** @type {string} */ |
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classification: "", |
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/** @type {string} */ |
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outCue: "", |
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/** @type {string} */ |
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startDate: "", |
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/** @type {string} */ |
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startTime: "", |
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/** @type {string} */ |
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endDate: "", |
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/** @type {string} */ |
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endTime: "", |
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/** @type {string} */ |
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producerAppId: "", |
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/** @type {string} */ |
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producerAppVersion: "", |
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/** @type {string} */ |
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userDef: "", |
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/** @type {number} */ |
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levelReference: 0, |
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/** @type {!Array<!Object>} */ |
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postTimer: [], |
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/** @type {string} */ |
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reserved: "", |
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/** @type {string} */ |
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url: "", |
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/** @type {string} */ |
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tagText: "" |
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}; |
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/** |
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* The data of the 'iXML' chunk. |
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* @type {!Object<string, *>} |
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*/ |
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this.iXML = { |
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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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value: "" |
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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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315
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/** @type {!Uint8Array} */ |
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samples: new Uint8Array(0) |
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}; |
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318
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/** |
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319
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* The data of the 'LIST' chunks. |
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320
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* Each item in this list look like this: |
|
321
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* { |
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322
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* chunkId: '', |
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323
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* chunkSize: 0, |
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324
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* format: '', |
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325
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* subChunks: [] |
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326
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* } |
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327
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* @type {!Array<!Object>} |
|
328
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*/ |
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329
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this.LIST = []; |
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330
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/** |
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331
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* The data of the 'junk' chunk. |
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332
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* @type {!Object<string, *>} |
|
333
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*/ |
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334
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this.junk = { |
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335
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/** @type {string} */ |
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336
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|
|
chunkId: "", |
|
337
|
|
|
/** @type {number} */ |
|
338
|
|
|
chunkSize: 0, |
|
339
|
|
|
/** @type {!Array<number>} */ |
|
340
|
|
|
chunkData: [] |
|
341
|
|
|
}; |
|
342
|
|
|
/** |
|
343
|
|
|
* The data of the '_PMX' chunk. |
|
344
|
|
|
* @type {!Object<string, *>} |
|
345
|
|
|
*/ |
|
346
|
|
|
this._PMX = { |
|
347
|
|
|
/** @type {string} */ |
|
348
|
|
|
chunkId: "", |
|
349
|
|
|
/** @type {number} */ |
|
350
|
|
|
chunkSize: 0, |
|
351
|
|
|
/** @type {string} */ |
|
352
|
|
|
value: "" |
|
353
|
|
|
}; |
|
354
|
|
|
/** |
|
355
|
|
|
* @type {{be: boolean, bits: number, fp: boolean, signed: boolean}} |
|
356
|
|
|
* @protected |
|
357
|
|
|
*/ |
|
358
|
|
|
this.uInt16 = { bits: 16, be: false, signed: false, fp: false }; |
|
359
|
|
|
} |
|
360
|
|
|
|
|
361
|
|
|
/** |
|
362
|
|
|
* Set up the WaveFileReader object from a wav byte buffer. |
|
363
|
|
|
* @param {!Uint8Array} wavBuffer The buffer. |
|
364
|
|
|
* @param {boolean=} [samples=true] True if the samples should be loaded. |
|
365
|
|
|
* @throws {Error} If container is not RIFF, RIFX or RF64. |
|
366
|
|
|
* @throws {Error} If format is not WAVE. |
|
367
|
|
|
* @throws {Error} If no 'fmt ' chunk is found. |
|
368
|
|
|
* @throws {Error} If no 'data' chunk is found. |
|
369
|
|
|
*/ |
|
370
|
|
|
fromBuffer(wavBuffer, samples = true) { |
|
371
|
|
|
// Always should reset the chunks when reading from a buffer |
|
372
|
|
|
this.clearHeaders(); |
|
373
|
|
|
this.setSignature(wavBuffer); |
|
374
|
|
|
this.uInt16.be = this.uInt32.be; |
|
375
|
|
|
if (this.format != "WAVE") { |
|
376
|
|
|
throw Error('Could not find the "WAVE" format identifier'); |
|
377
|
|
|
} |
|
378
|
|
|
this.readDs64Chunk_(wavBuffer); |
|
379
|
|
|
this.readFmtChunk_(wavBuffer); |
|
380
|
|
|
this.readFactChunk_(wavBuffer); |
|
381
|
|
|
this.readBextChunk_(wavBuffer); |
|
382
|
|
|
this.readMextChunk_(wavBuffer); |
|
383
|
|
|
this.readCartChunk_(wavBuffer); |
|
384
|
|
|
this.readiXMLChunk_(wavBuffer); |
|
385
|
|
|
this.readCueChunk_(wavBuffer); |
|
386
|
|
|
this.readSmplChunk_(wavBuffer); |
|
387
|
|
|
this.readDataChunk_(wavBuffer, samples); |
|
388
|
|
|
this.readJunkChunk_(wavBuffer); |
|
389
|
|
|
this.readLISTChunk_(wavBuffer); |
|
390
|
|
|
this.read_PMXChunk_(wavBuffer); |
|
391
|
|
|
} |
|
392
|
|
|
|
|
393
|
|
|
/** |
|
394
|
|
|
* Reset the chunks of the WaveFileReader instance. |
|
395
|
|
|
* @protected |
|
396
|
|
|
* @ignore |
|
397
|
|
|
*/ |
|
398
|
|
|
clearHeaders() { |
|
399
|
|
|
/** @type {!Object} */ |
|
400
|
|
|
let tmpWav = new WaveFileReader(); |
|
401
|
|
|
Object.assign(this.fmt, tmpWav.fmt); |
|
402
|
|
|
Object.assign(this.fact, tmpWav.fact); |
|
403
|
|
|
Object.assign(this.cue, tmpWav.cue); |
|
404
|
|
|
Object.assign(this.smpl, tmpWav.smpl); |
|
405
|
|
|
Object.assign(this.bext, tmpWav.bext); |
|
406
|
|
|
Object.assign(this.mext, tmpWav.mext); |
|
407
|
|
|
Object.assign(this.cart, tmpWav.cart); |
|
408
|
|
|
Object.assign(this.iXML, tmpWav.iXML); |
|
409
|
|
|
Object.assign(this.ds64, tmpWav.ds64); |
|
410
|
|
|
Object.assign(this.data, tmpWav.data); |
|
411
|
|
|
this.LIST = []; |
|
412
|
|
|
Object.assign(this.junk, tmpWav.junk); |
|
413
|
|
|
Object.assign(this._PMX, tmpWav._PMX); |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
|
|
/** |
|
417
|
|
|
* Read the 'fmt ' chunk of a wave file. |
|
418
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
419
|
|
|
* @throws {Error} If no 'fmt ' chunk is found. |
|
420
|
|
|
* @private |
|
421
|
|
|
*/ |
|
422
|
|
|
readFmtChunk_(buffer) { |
|
423
|
|
|
/** @type {?Object} */ |
|
424
|
|
|
let chunk = this.findChunk("fmt "); |
|
425
|
|
|
if (chunk) { |
|
426
|
|
|
this.head = chunk.chunkData.start; |
|
427
|
|
|
this.fmt.chunkId = chunk.chunkId; |
|
428
|
|
|
this.fmt.chunkSize = chunk.chunkSize; |
|
429
|
|
|
this.fmt.audioFormat = this.readUInt16_(buffer); |
|
430
|
|
|
this.fmt.numChannels = this.readUInt16_(buffer); |
|
431
|
|
|
this.fmt.sampleRate = this.readUInt32(buffer); |
|
432
|
|
|
this.fmt.byteRate = this.readUInt32(buffer); |
|
433
|
|
|
this.fmt.blockAlign = this.readUInt16_(buffer); |
|
434
|
|
|
this.fmt.bitsPerSample = this.readUInt16_(buffer); |
|
435
|
|
|
this.readFmtExtension_(buffer); |
|
436
|
|
|
} else { |
|
437
|
|
|
throw Error('Could not find the "fmt " chunk'); |
|
438
|
|
|
} |
|
439
|
|
|
} |
|
440
|
|
|
|
|
441
|
|
|
/** |
|
442
|
|
|
* Read the 'fmt ' chunk extension. |
|
443
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
444
|
|
|
* @private |
|
445
|
|
|
*/ |
|
446
|
|
|
readFmtExtension_(buffer) { |
|
447
|
|
|
if (this.fmt.chunkSize > 16) { |
|
448
|
|
|
this.fmt.cbSize = this.readUInt16_(buffer); |
|
449
|
|
|
if (this.fmt.audioFormat == 80 && this.fmt.chunkSize == 40) { |
|
450
|
|
|
this.fmt.headLayer = this.readUInt16_(buffer); |
|
451
|
|
|
this.fmt.headBitRate = this.readUInt32(buffer); |
|
452
|
|
|
this.fmt.headMode = this.readUInt16_(buffer); |
|
453
|
|
|
this.fmt.headModeExt = this.readUInt16_(buffer); |
|
454
|
|
|
this.fmt.headEmphasis = this.readUInt16_(buffer); |
|
455
|
|
|
this.fmt.headFlags = this.readUInt16_(buffer); |
|
456
|
|
|
this.fmt.ptsLow = this.readUInt32(buffer); |
|
457
|
|
|
this.fmt.ptsHigh = this.readUInt32(buffer); |
|
458
|
|
|
} else if (this.fmt.chunkSize > 18) { |
|
459
|
|
|
this.fmt.validBitsPerSample = this.readUInt16_(buffer); |
|
460
|
|
|
if (this.fmt.chunkSize > 20) { |
|
461
|
|
|
this.fmt.dwChannelMask = this.readUInt32(buffer); |
|
462
|
|
|
this.fmt.subformat = [ |
|
463
|
|
|
this.readUInt32(buffer), |
|
464
|
|
|
this.readUInt32(buffer), |
|
465
|
|
|
this.readUInt32(buffer), |
|
466
|
|
|
this.readUInt32(buffer) |
|
467
|
|
|
]; |
|
468
|
|
|
} |
|
469
|
|
|
} |
|
470
|
|
|
} |
|
471
|
|
|
} |
|
472
|
|
|
|
|
473
|
|
|
/** |
|
474
|
|
|
* Read the 'fact' chunk of a wav file. |
|
475
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
476
|
|
|
* @private |
|
477
|
|
|
*/ |
|
478
|
|
|
readFactChunk_(buffer) { |
|
479
|
|
|
/** @type {?Object} */ |
|
480
|
|
|
let chunk = this.findChunk("fact"); |
|
481
|
|
|
if (chunk) { |
|
482
|
|
|
this.head = chunk.chunkData.start; |
|
483
|
|
|
this.fact.chunkId = chunk.chunkId; |
|
484
|
|
|
this.fact.chunkSize = chunk.chunkSize; |
|
485
|
|
|
this.fact.dwSampleLength = this.readUInt32(buffer); |
|
486
|
|
|
} |
|
487
|
|
|
} |
|
488
|
|
|
|
|
489
|
|
|
/** |
|
490
|
|
|
* Read the 'cue ' chunk of a wave file. |
|
491
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
492
|
|
|
* @private |
|
493
|
|
|
*/ |
|
494
|
|
|
readCueChunk_(buffer) { |
|
495
|
|
|
/** @type {?Object} */ |
|
496
|
|
|
let chunk = this.findChunk("cue "); |
|
497
|
|
|
if (chunk) { |
|
498
|
|
|
this.head = chunk.chunkData.start; |
|
499
|
|
|
this.cue.chunkId = chunk.chunkId; |
|
500
|
|
|
this.cue.chunkSize = chunk.chunkSize; |
|
501
|
|
|
this.cue.dwCuePoints = this.readUInt32(buffer); |
|
502
|
|
|
for (let i = 0; i < this.cue.dwCuePoints; i++) { |
|
503
|
|
|
this.cue.points.push({ |
|
504
|
|
|
dwName: this.readUInt32(buffer), |
|
505
|
|
|
dwPosition: this.readUInt32(buffer), |
|
506
|
|
|
fccChunk: this.readString(buffer, 4), |
|
507
|
|
|
dwChunkStart: this.readUInt32(buffer), |
|
508
|
|
|
dwBlockStart: this.readUInt32(buffer), |
|
509
|
|
|
dwSampleOffset: this.readUInt32(buffer) |
|
510
|
|
|
}); |
|
511
|
|
|
} |
|
512
|
|
|
} |
|
513
|
|
|
} |
|
514
|
|
|
|
|
515
|
|
|
/** |
|
516
|
|
|
* Read the 'smpl' chunk of a wave file. |
|
517
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
518
|
|
|
* @private |
|
519
|
|
|
*/ |
|
520
|
|
|
readSmplChunk_(buffer) { |
|
521
|
|
|
/** @type {?Object} */ |
|
522
|
|
|
let chunk = this.findChunk("smpl"); |
|
523
|
|
|
if (chunk) { |
|
524
|
|
|
this.head = chunk.chunkData.start; |
|
525
|
|
|
this.smpl.chunkId = chunk.chunkId; |
|
526
|
|
|
this.smpl.chunkSize = chunk.chunkSize; |
|
527
|
|
|
this.smpl.dwManufacturer = this.readUInt32(buffer); |
|
528
|
|
|
this.smpl.dwProduct = this.readUInt32(buffer); |
|
529
|
|
|
this.smpl.dwSamplePeriod = this.readUInt32(buffer); |
|
530
|
|
|
this.smpl.dwMIDIUnityNote = this.readUInt32(buffer); |
|
531
|
|
|
this.smpl.dwMIDIPitchFraction = this.readUInt32(buffer); |
|
532
|
|
|
this.smpl.dwSMPTEFormat = this.readUInt32(buffer); |
|
533
|
|
|
this.smpl.dwSMPTEOffset = this.readUInt32(buffer); |
|
534
|
|
|
this.smpl.dwNumSampleLoops = this.readUInt32(buffer); |
|
535
|
|
|
this.smpl.dwSamplerData = this.readUInt32(buffer); |
|
536
|
|
|
for (let i = 0; i < this.smpl.dwNumSampleLoops; i++) { |
|
537
|
|
|
this.smpl.loops.push({ |
|
538
|
|
|
dwName: this.readUInt32(buffer), |
|
539
|
|
|
dwType: this.readUInt32(buffer), |
|
540
|
|
|
dwStart: this.readUInt32(buffer), |
|
541
|
|
|
dwEnd: this.readUInt32(buffer), |
|
542
|
|
|
dwFraction: this.readUInt32(buffer), |
|
543
|
|
|
dwPlayCount: this.readUInt32(buffer) |
|
544
|
|
|
}); |
|
545
|
|
|
} |
|
546
|
|
|
} |
|
547
|
|
|
} |
|
548
|
|
|
|
|
549
|
|
|
/** |
|
550
|
|
|
* Read the 'data' chunk of a wave file. |
|
551
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
552
|
|
|
* @param {boolean} samples True if the samples should be loaded. |
|
553
|
|
|
* @throws {Error} If no 'data' chunk is found. |
|
554
|
|
|
* @private |
|
555
|
|
|
*/ |
|
556
|
|
|
readDataChunk_(buffer, samples) { |
|
557
|
|
|
/** @type {?Object} */ |
|
558
|
|
|
let chunk = this.findChunk("data"); |
|
559
|
|
|
if (chunk) { |
|
560
|
|
|
this.data.chunkId = "data"; |
|
561
|
|
|
this.data.chunkSize = chunk.chunkSize; |
|
562
|
|
|
if (samples) { |
|
563
|
|
|
this.data.samples = buffer.slice( |
|
564
|
|
|
chunk.chunkData.start, |
|
565
|
|
|
chunk.chunkData.end |
|
566
|
|
|
); |
|
567
|
|
|
} |
|
568
|
|
|
} else { |
|
569
|
|
|
throw Error('Could not find the "data" chunk'); |
|
570
|
|
|
} |
|
571
|
|
|
} |
|
572
|
|
|
|
|
573
|
|
|
/** |
|
574
|
|
|
* Read the 'bext' chunk of a wav file. |
|
575
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
576
|
|
|
* @private |
|
577
|
|
|
*/ |
|
578
|
|
|
readBextChunk_(buffer) { |
|
579
|
|
|
/** @type {?Object} */ |
|
580
|
|
|
let chunk = this.findChunk("bext"); |
|
581
|
|
|
if (chunk) { |
|
582
|
|
|
this.head = chunk.chunkData.start; |
|
583
|
|
|
this.bext.chunkId = chunk.chunkId; |
|
584
|
|
|
this.bext.chunkSize = chunk.chunkSize; |
|
585
|
|
|
this.bext.description = this.readString(buffer, 256); |
|
586
|
|
|
this.bext.originator = this.readString(buffer, 32); |
|
587
|
|
|
this.bext.originatorReference = this.readString(buffer, 32); |
|
588
|
|
|
this.bext.originationDate = this.readString(buffer, 10); |
|
589
|
|
|
this.bext.originationTime = this.readString(buffer, 8); |
|
590
|
|
|
this.bext.timeReference = [ |
|
591
|
|
|
this.readUInt32(buffer), |
|
592
|
|
|
this.readUInt32(buffer) |
|
593
|
|
|
]; |
|
594
|
|
|
this.bext.version = this.readUInt16_(buffer); |
|
595
|
|
|
this.bext.UMID = this.readString(buffer, 64); |
|
596
|
|
|
this.bext.loudnessValue = this.readUInt16_(buffer); |
|
597
|
|
|
this.bext.loudnessRange = this.readUInt16_(buffer); |
|
598
|
|
|
this.bext.maxTruePeakLevel = this.readUInt16_(buffer); |
|
599
|
|
|
this.bext.maxMomentaryLoudness = this.readUInt16_(buffer); |
|
600
|
|
|
this.bext.maxShortTermLoudness = this.readUInt16_(buffer); |
|
601
|
|
|
this.bext.reserved = this.readString(buffer, 180); |
|
602
|
|
|
this.bext.codingHistory = this.readString( |
|
603
|
|
|
buffer, |
|
604
|
|
|
this.bext.chunkSize - 602 |
|
605
|
|
|
); |
|
606
|
|
|
} |
|
607
|
|
|
} |
|
608
|
|
|
|
|
609
|
|
|
/** |
|
610
|
|
|
* Read the 'mext' chunk of a wav file. |
|
611
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
612
|
|
|
* @private |
|
613
|
|
|
*/ |
|
614
|
|
|
readMextChunk_(buffer) { |
|
615
|
|
|
/** @type {?Object} */ |
|
616
|
|
|
let chunk = this.findChunk("mext"); |
|
617
|
|
|
if (chunk) { |
|
618
|
|
|
this.head = chunk.chunkData.start; |
|
619
|
|
|
this.mext.chunkId = chunk.chunkId; |
|
620
|
|
|
this.mext.chunkSize = chunk.chunkSize; |
|
621
|
|
|
this.mext.soundInformation = this.readUInt16_(buffer); |
|
622
|
|
|
this.mext.frameSize = this.readUInt16_(buffer); |
|
623
|
|
|
this.mext.ancillaryDataLength = this.readUInt16_(buffer); |
|
624
|
|
|
this.mext.ancillaryDataDef = this.readUInt16_(buffer); |
|
625
|
|
|
this.mext.reserved = this.readString(buffer, 4); |
|
626
|
|
|
} |
|
627
|
|
|
} |
|
628
|
|
|
|
|
629
|
|
|
/** |
|
630
|
|
|
* Read the 'cart' chunk of a wav file. |
|
631
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
632
|
|
|
* @private |
|
633
|
|
|
*/ |
|
634
|
|
|
readCartChunk_(buffer) { |
|
635
|
|
|
/** @type {?Object} */ |
|
636
|
|
|
let chunk = this.findChunk("cart"); |
|
637
|
|
|
if (chunk) { |
|
638
|
|
|
this.head = chunk.chunkData.start; |
|
639
|
|
|
this.cart.chunkId = chunk.chunkId; |
|
640
|
|
|
this.cart.chunkSize = chunk.chunkSize; |
|
641
|
|
|
this.cart.version = this.readString(buffer, 4); |
|
642
|
|
|
this.cart.title = this.readString(buffer, 64); |
|
643
|
|
|
this.cart.artist = this.readString(buffer, 64); |
|
644
|
|
|
this.cart.cutId = this.readString(buffer, 64); |
|
645
|
|
|
this.cart.clientId = this.readString(buffer, 64); |
|
646
|
|
|
this.cart.category = this.readString(buffer, 64); |
|
647
|
|
|
this.cart.classification = this.readString(buffer, 64); |
|
648
|
|
|
this.cart.outCue = this.readString(buffer, 64); |
|
649
|
|
|
this.cart.startDate = this.readString(buffer, 10); |
|
650
|
|
|
this.cart.startTime = this.readString(buffer, 8); |
|
651
|
|
|
this.cart.endDate = this.readString(buffer, 10); |
|
652
|
|
|
this.cart.endTime = this.readString(buffer, 8); |
|
653
|
|
|
this.cart.producerAppId = this.readString(buffer, 64); |
|
654
|
|
|
this.cart.producerAppVersion = this.readString(buffer, 64); |
|
655
|
|
|
this.cart.userDef = this.readString(buffer, 64); |
|
656
|
|
|
this.cart.levelReference = this.readUInt32(buffer); |
|
657
|
|
|
this.cart.postTimer = []; |
|
658
|
|
|
for (let i = 0; i < 8; i++) { |
|
659
|
|
|
this.cart.postTimer.push({ |
|
660
|
|
|
usage: this.readString(buffer, 4), |
|
661
|
|
|
value: this.readUInt32(buffer) |
|
662
|
|
|
}); |
|
663
|
|
|
} |
|
664
|
|
|
this.cart.reserved = this.readString(buffer, 276); |
|
665
|
|
|
this.cart.url = this.readString(buffer, 1024); |
|
666
|
|
|
this.cart.tagText = this.readString(buffer, chunk.chunkSize - 2048); |
|
667
|
|
|
} |
|
668
|
|
|
} |
|
669
|
|
|
|
|
670
|
|
|
/** |
|
671
|
|
|
* Read the 'iXML' chunk of a wav file. |
|
672
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
673
|
|
|
* @private |
|
674
|
|
|
*/ |
|
675
|
|
|
readiXMLChunk_(buffer) { |
|
676
|
|
|
/** @type {?Object} */ |
|
677
|
|
|
let chunk = this.findChunk("iXML"); |
|
678
|
|
|
if (chunk) { |
|
679
|
|
|
this.head = chunk.chunkData.start; |
|
680
|
|
|
this.iXML.chunkId = chunk.chunkId; |
|
681
|
|
|
this.iXML.chunkSize = chunk.chunkSize; |
|
682
|
|
|
this.iXML.value = unpackString( |
|
683
|
|
|
buffer, |
|
684
|
|
|
this.head, |
|
685
|
|
|
this.head + this.iXML.chunkSize |
|
686
|
|
|
); |
|
687
|
|
|
} |
|
688
|
|
|
} |
|
689
|
|
|
|
|
690
|
|
|
/** |
|
691
|
|
|
* Read the 'ds64' chunk of a wave file. |
|
692
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
693
|
|
|
* @throws {Error} If no 'ds64' chunk is found and the file is RF64. |
|
694
|
|
|
* @private |
|
695
|
|
|
*/ |
|
696
|
|
|
readDs64Chunk_(buffer) { |
|
697
|
|
|
/** @type {?Object} */ |
|
698
|
|
|
let chunk = this.findChunk("ds64"); |
|
699
|
|
|
if (chunk) { |
|
700
|
|
|
this.head = chunk.chunkData.start; |
|
701
|
|
|
this.ds64.chunkId = chunk.chunkId; |
|
702
|
|
|
this.ds64.chunkSize = chunk.chunkSize; |
|
703
|
|
|
this.ds64.riffSizeHigh = this.readUInt32(buffer); |
|
704
|
|
|
this.ds64.riffSizeLow = this.readUInt32(buffer); |
|
705
|
|
|
this.ds64.dataSizeHigh = this.readUInt32(buffer); |
|
706
|
|
|
this.ds64.dataSizeLow = this.readUInt32(buffer); |
|
707
|
|
|
this.ds64.originationTime = this.readUInt32(buffer); |
|
708
|
|
|
this.ds64.sampleCountHigh = this.readUInt32(buffer); |
|
709
|
|
|
this.ds64.sampleCountLow = this.readUInt32(buffer); |
|
710
|
|
|
//if (wav.ds64.chunkSize > 28) { |
|
711
|
|
|
// wav.ds64.tableLength = unpack( |
|
712
|
|
|
// chunkData.slice(28, 32), uInt32_); |
|
713
|
|
|
// wav.ds64.table = chunkData.slice( |
|
714
|
|
|
// 32, 32 + wav.ds64.tableLength); |
|
715
|
|
|
//} |
|
716
|
|
|
} else { |
|
717
|
|
|
if (this.container == "RF64") { |
|
718
|
|
|
throw Error('Could not find the "ds64" chunk'); |
|
719
|
|
|
} |
|
720
|
|
|
} |
|
721
|
|
|
} |
|
722
|
|
|
|
|
723
|
|
|
/** |
|
724
|
|
|
* Read the 'LIST' chunks of a wave file. |
|
725
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
726
|
|
|
* @private |
|
727
|
|
|
*/ |
|
728
|
|
|
readLISTChunk_(buffer) { |
|
729
|
|
|
/** @type {?Object} */ |
|
730
|
|
|
let listChunks = this.findChunk("LIST", true); |
|
731
|
|
|
if (listChunks !== null) { |
|
732
|
|
|
for (let j = 0; j < listChunks.length; j++) { |
|
733
|
|
|
/** @type {!Object} */ |
|
734
|
|
|
let subChunk = listChunks[j]; |
|
735
|
|
|
this.LIST.push({ |
|
736
|
|
|
chunkId: subChunk.chunkId, |
|
737
|
|
|
chunkSize: subChunk.chunkSize, |
|
738
|
|
|
format: subChunk.format, |
|
739
|
|
|
subChunks: [] |
|
740
|
|
|
}); |
|
741
|
|
|
for (let x = 0; x < subChunk.subChunks.length; x++) { |
|
742
|
|
|
this.readLISTSubChunks_( |
|
743
|
|
|
subChunk.subChunks[x], |
|
744
|
|
|
subChunk.format, |
|
745
|
|
|
buffer |
|
746
|
|
|
); |
|
747
|
|
|
} |
|
748
|
|
|
} |
|
749
|
|
|
} |
|
750
|
|
|
} |
|
751
|
|
|
|
|
752
|
|
|
/** |
|
753
|
|
|
* Read the sub chunks of a 'LIST' chunk. |
|
754
|
|
|
* @param {!Object} subChunk The 'LIST' subchunks. |
|
755
|
|
|
* @param {string} format The 'LIST' format, 'adtl' or 'INFO'. |
|
756
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
757
|
|
|
* @private |
|
758
|
|
|
*/ |
|
759
|
|
|
readLISTSubChunks_(subChunk, format, buffer) { |
|
760
|
|
|
if (format == "adtl") { |
|
761
|
|
|
if (["labl", "note", "ltxt"].indexOf(subChunk.chunkId) > -1) { |
|
762
|
|
|
this.readLISTadtlSubChunks_(buffer, subChunk); |
|
763
|
|
|
} |
|
764
|
|
|
// RIFF INFO tags like ICRD, ISFT, ICMT |
|
765
|
|
|
} else if (format == "INFO") { |
|
766
|
|
|
this.readLISTINFOSubChunks_(buffer, subChunk); |
|
767
|
|
|
} |
|
768
|
|
|
} |
|
769
|
|
|
|
|
770
|
|
|
/** |
|
771
|
|
|
* Read the sub chunks of a 'LIST' chunk of type 'adtl'. |
|
772
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
773
|
|
|
* @param {!Object} subChunk The 'LIST' subchunks. |
|
774
|
|
|
* @private |
|
775
|
|
|
*/ |
|
776
|
|
|
readLISTadtlSubChunks_(buffer, subChunk) { |
|
777
|
|
|
this.head = subChunk.chunkData.start; |
|
778
|
|
|
/** @type {!Object<string, string|number>} */ |
|
779
|
|
|
let item = { |
|
780
|
|
|
chunkId: subChunk.chunkId, |
|
781
|
|
|
chunkSize: subChunk.chunkSize, |
|
782
|
|
|
dwName: this.readUInt32(buffer) |
|
783
|
|
|
}; |
|
784
|
|
|
if (subChunk.chunkId == "ltxt") { |
|
785
|
|
|
item.dwSampleLength = this.readUInt32(buffer); |
|
786
|
|
|
item.dwPurposeID = this.readUInt32(buffer); |
|
787
|
|
|
item.dwCountry = this.readUInt16_(buffer); |
|
788
|
|
|
item.dwLanguage = this.readUInt16_(buffer); |
|
789
|
|
|
item.dwDialect = this.readUInt16_(buffer); |
|
790
|
|
|
item.dwCodePage = this.readUInt16_(buffer); |
|
791
|
|
|
item.value = ""; // kept for compatibility |
|
792
|
|
|
} else { |
|
793
|
|
|
item.value = this.readZSTR_(buffer, this.head); |
|
794
|
|
|
} |
|
795
|
|
|
this.LIST[this.LIST.length - 1].subChunks.push(item); |
|
796
|
|
|
} |
|
797
|
|
|
|
|
798
|
|
|
/** |
|
799
|
|
|
* Read the sub chunks of a 'LIST' chunk of type 'INFO'. |
|
800
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
801
|
|
|
* @param {!Object} subChunk The 'LIST' subchunks. |
|
802
|
|
|
* @private |
|
803
|
|
|
*/ |
|
804
|
|
|
readLISTINFOSubChunks_(buffer, subChunk) { |
|
805
|
|
|
this.head = subChunk.chunkData.start; |
|
806
|
|
|
this.LIST[this.LIST.length - 1].subChunks.push({ |
|
807
|
|
|
chunkId: subChunk.chunkId, |
|
808
|
|
|
chunkSize: subChunk.chunkSize, |
|
809
|
|
|
value: this.readZSTR_(buffer, this.head) |
|
810
|
|
|
}); |
|
811
|
|
|
} |
|
812
|
|
|
|
|
813
|
|
|
/** |
|
814
|
|
|
* Read the 'junk' chunk of a wave file. |
|
815
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
816
|
|
|
* @private |
|
817
|
|
|
*/ |
|
818
|
|
|
readJunkChunk_(buffer) { |
|
819
|
|
|
/** @type {?Object} */ |
|
820
|
|
|
let chunk = this.findChunk("junk"); |
|
821
|
|
|
if (chunk) { |
|
822
|
|
|
this.junk = { |
|
823
|
|
|
chunkId: chunk.chunkId, |
|
824
|
|
|
chunkSize: chunk.chunkSize, |
|
825
|
|
|
chunkData: [].slice.call( |
|
826
|
|
|
buffer.slice(chunk.chunkData.start, chunk.chunkData.end) |
|
827
|
|
|
) |
|
828
|
|
|
}; |
|
829
|
|
|
} |
|
830
|
|
|
} |
|
831
|
|
|
|
|
832
|
|
|
/** |
|
833
|
|
|
* Read the '_PMX' chunk of a wav file. |
|
834
|
|
|
* @param {!Uint8Array} buffer The wav file buffer. |
|
835
|
|
|
* @private |
|
836
|
|
|
*/ |
|
837
|
|
|
read_PMXChunk_(buffer) { |
|
838
|
|
|
/** @type {?Object} */ |
|
839
|
|
|
let chunk = this.findChunk("_PMX"); |
|
840
|
|
|
if (chunk) { |
|
841
|
|
|
this.head = chunk.chunkData.start; |
|
842
|
|
|
this._PMX.chunkId = chunk.chunkId; |
|
843
|
|
|
this._PMX.chunkSize = chunk.chunkSize; |
|
844
|
|
|
this._PMX.value = unpackString( |
|
845
|
|
|
buffer, |
|
846
|
|
|
this.head, |
|
847
|
|
|
this.head + this._PMX.chunkSize |
|
848
|
|
|
); |
|
849
|
|
|
} |
|
850
|
|
|
} |
|
851
|
|
|
|
|
852
|
|
|
/** |
|
853
|
|
|
* Read bytes as a ZSTR string. |
|
854
|
|
|
* @param {!Uint8Array} bytes The bytes. |
|
855
|
|
|
* @param {number=} [index=0] the index to start reading. |
|
856
|
|
|
* @return {string} The string. |
|
857
|
|
|
* @private |
|
858
|
|
|
*/ |
|
859
|
|
|
readZSTR_(bytes, index = 0) { |
|
860
|
|
|
for (let i = index; i < bytes.length; i++) { |
|
861
|
|
|
this.head++; |
|
862
|
|
|
if (bytes[i] === 0) { |
|
863
|
|
|
break; |
|
864
|
|
|
} |
|
865
|
|
|
} |
|
866
|
|
|
return unpackString(bytes, index, this.head - 1); |
|
867
|
|
|
} |
|
868
|
|
|
|
|
869
|
|
|
/** |
|
870
|
|
|
* Read a number from a chunk. |
|
871
|
|
|
* @param {!Uint8Array} bytes The chunk bytes. |
|
872
|
|
|
* @return {number} The number. |
|
873
|
|
|
* @private |
|
874
|
|
|
*/ |
|
875
|
|
|
readUInt16_(bytes) { |
|
876
|
|
|
/** @type {number} */ |
|
877
|
|
|
let value = unpack(bytes, this.uInt16, this.head); |
|
878
|
|
|
this.head += 2; |
|
879
|
|
|
return value; |
|
880
|
|
|
} |
|
881
|
|
|
} |
|
882
|
|
|
|
rochars /
wavefile
