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/* |
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* Copyright (c) 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 Make buffers of structured wav data. |
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* @see https://github.com/rochars/wavefile |
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*/ |
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import {pack, packTo, packStringTo, packString} from '../vendor/byte-data.js'; |
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import BufferIO from './bufferio.js'; |
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let io = new BufferIO(); |
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/** |
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* Return a .wav file byte buffer with the data from the WaveFile object. |
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* The return value of this method can be written straight to disk. |
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* @return {!Uint8Array} The wav file bytes. |
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* @private |
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*/ |
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export default function writeWavBuffer(wav, uInt32_, uInt16_) { |
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/** @type {!Array<!Array<number>>} */ |
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let fileBody = [ |
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getJunkBytes_(wav, uInt32_, uInt16_), |
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getDs64Bytes_(wav, uInt32_, uInt16_), |
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getBextBytes_(wav, uInt32_, uInt16_), |
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getFmtBytes_(wav, uInt32_, uInt16_), |
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getFactBytes_(wav, uInt32_, uInt16_), |
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packString(wav.data.chunkId), |
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pack(wav.data.samples.length, uInt32_), |
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wav.data.samples, |
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getCueBytes_(wav, uInt32_, uInt16_), |
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getSmplBytes_(wav, uInt32_, uInt16_), |
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getLISTBytes_(wav, uInt32_, uInt16_) |
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]; |
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/** @type {number} */ |
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let fileBodyLength = 0; |
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for (let i=0; i<fileBody.length; i++) { |
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fileBodyLength += fileBody[i].length; |
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} |
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/** @type {!Uint8Array} */ |
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let file = new Uint8Array(fileBodyLength + 12); |
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/** @type {number} */ |
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let index = 0; |
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index = packStringTo(wav.container, file, index); |
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index = packTo(fileBodyLength + 4, uInt32_, file, index); |
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index = packStringTo(wav.format, file, index); |
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for (let i=0; i<fileBody.length; i++) { |
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file.set(fileBody[i], index); |
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index += fileBody[i].length; |
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} |
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return file; |
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} |
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/** |
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* Return the bytes of the 'bext' chunk. |
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* @return {!Array<number>} The 'bext' chunk bytes. |
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* @private |
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*/ |
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function getBextBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let bytes = []; |
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enforceBext_(wav, uInt32_, uInt16_); |
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if (wav.bext.chunkId) { |
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wav.bext.chunkSize = 602 + wav.bext.codingHistory.length; |
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bytes = bytes.concat( |
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packString(wav.bext.chunkId), |
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pack(602 + wav.bext.codingHistory.length, uInt32_), |
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io.writeString_(wav.bext.description, 256), |
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io.writeString_(wav.bext.originator, 32), |
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io.writeString_(wav.bext.originatorReference, 32), |
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io.writeString_(wav.bext.originationDate, 10), |
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io.writeString_(wav.bext.originationTime, 8), |
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pack(wav.bext.timeReference[0], uInt32_), |
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pack(wav.bext.timeReference[1], uInt32_), |
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pack(wav.bext.version, uInt16_), |
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io.writeString_(wav.bext.UMID, 64), |
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pack(wav.bext.loudnessValue, uInt16_), |
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pack(wav.bext.loudnessRange, uInt16_), |
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pack(wav.bext.maxTruePeakLevel, uInt16_), |
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pack(wav.bext.maxMomentaryLoudness, uInt16_), |
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pack(wav.bext.maxShortTermLoudness, uInt16_), |
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io.writeString_(wav.bext.reserved, 180), |
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io.writeString_( |
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wav.bext.codingHistory, wav.bext.codingHistory.length)); |
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} |
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return bytes; |
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} |
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/** |
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* Make sure a 'bext' chunk is created if BWF data was created in a file. |
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* @private |
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*/ |
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function enforceBext_(wav, uInt32_, uInt16_) { |
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for (var prop in wav.bext) { |
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if (wav.bext.hasOwnProperty(prop)) { |
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if (wav.bext[prop] && prop != 'timeReference') { |
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wav.bext.chunkId = 'bext'; |
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break; |
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} |
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} |
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} |
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if (wav.bext.timeReference[0] || wav.bext.timeReference[1]) { |
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wav.bext.chunkId = 'bext'; |
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} |
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} |
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/** |
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* Return the bytes of the 'ds64' chunk. |
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* @return {!Array<number>} The 'ds64' chunk bytes. |
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* @private |
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*/ |
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function getDs64Bytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let bytes = []; |
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if (wav.ds64.chunkId) { |
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bytes = bytes.concat( |
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packString(wav.ds64.chunkId), |
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pack(wav.ds64.chunkSize, uInt32_), |
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pack(wav.ds64.riffSizeHigh, uInt32_), |
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pack(wav.ds64.riffSizeLow, uInt32_), |
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pack(wav.ds64.dataSizeHigh, uInt32_), |
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pack(wav.ds64.dataSizeLow, uInt32_), |
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pack(wav.ds64.originationTime, uInt32_), |
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pack(wav.ds64.sampleCountHigh, uInt32_), |
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pack(wav.ds64.sampleCountLow, uInt32_)); |
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} |
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//if (this.ds64.tableLength) { |
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// ds64Bytes = ds64Bytes.concat( |
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// pack(this.ds64.tableLength, this.uInt32_), |
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// this.ds64.table); |
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//} |
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return bytes; |
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} |
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/** |
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* Return the bytes of the 'cue ' chunk. |
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* @return {!Array<number>} The 'cue ' chunk bytes. |
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* @private |
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*/ |
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function getCueBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let bytes = []; |
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if (wav.cue.chunkId) { |
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/** @type {!Array<number>} */ |
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let cuePointsBytes = getCuePointsBytes_(wav, uInt32_, uInt16_); |
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bytes = bytes.concat( |
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packString(wav.cue.chunkId), |
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pack(cuePointsBytes.length + 4, uInt32_), |
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pack(wav.cue.dwCuePoints, uInt32_), |
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cuePointsBytes); |
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} |
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return bytes; |
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} |
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/** |
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* Return the bytes of the 'cue ' points. |
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* @return {!Array<number>} The 'cue ' points as an array of bytes. |
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* @private |
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*/ |
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function getCuePointsBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let points = []; |
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for (let i=0; i<wav.cue.dwCuePoints; i++) { |
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points = points.concat( |
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pack(wav.cue.points[i].dwName, uInt32_), |
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pack(wav.cue.points[i].dwPosition, uInt32_), |
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packString(wav.cue.points[i].fccChunk), |
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pack(wav.cue.points[i].dwChunkStart, uInt32_), |
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pack(wav.cue.points[i].dwBlockStart, uInt32_), |
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pack(wav.cue.points[i].dwSampleOffset, uInt32_)); |
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} |
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return points; |
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} |
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/** |
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* Return the bytes of the 'smpl' chunk. |
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* @return {!Array<number>} The 'smpl' chunk bytes. |
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* @private |
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*/ |
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function getSmplBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let bytes = []; |
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if (wav.smpl.chunkId) { |
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/** @type {!Array<number>} */ |
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let smplLoopsBytes = getSmplLoopsBytes_(wav, uInt32_, uInt16_); |
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bytes = bytes.concat( |
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packString(wav.smpl.chunkId), |
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pack(smplLoopsBytes.length + 36, uInt32_), |
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pack(wav.smpl.dwManufacturer, uInt32_), |
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pack(wav.smpl.dwProduct, uInt32_), |
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pack(wav.smpl.dwSamplePeriod, uInt32_), |
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pack(wav.smpl.dwMIDIUnityNote, uInt32_), |
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pack(wav.smpl.dwMIDIPitchFraction, uInt32_), |
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pack(wav.smpl.dwSMPTEFormat, uInt32_), |
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pack(wav.smpl.dwSMPTEOffset, uInt32_), |
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pack(wav.smpl.dwNumSampleLoops, uInt32_), |
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pack(wav.smpl.dwSamplerData, uInt32_), |
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smplLoopsBytes); |
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} |
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return bytes; |
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} |
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/** |
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* Return the bytes of the 'smpl' loops. |
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* @return {!Array<number>} The 'smpl' loops as an array of bytes. |
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* @private |
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*/ |
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function getSmplLoopsBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let loops = []; |
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for (let i=0; i<wav.smpl.dwNumSampleLoops; i++) { |
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loops = loops.concat( |
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pack(wav.smpl.loops[i].dwName, uInt32_), |
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pack(wav.smpl.loops[i].dwType, uInt32_), |
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pack(wav.smpl.loops[i].dwStart, uInt32_), |
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pack(wav.smpl.loops[i].dwEnd, uInt32_), |
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pack(wav.smpl.loops[i].dwFraction, uInt32_), |
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pack(wav.smpl.loops[i].dwPlayCount, uInt32_)); |
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} |
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return loops; |
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} |
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/** |
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* Return the bytes of the 'fact' chunk. |
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* @return {!Array<number>} The 'fact' chunk bytes. |
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* @private |
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*/ |
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function getFactBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let bytes = []; |
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if (wav.fact.chunkId) { |
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bytes = bytes.concat( |
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packString(wav.fact.chunkId), |
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pack(wav.fact.chunkSize, uInt32_), |
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pack(wav.fact.dwSampleLength, uInt32_)); |
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} |
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return bytes; |
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} |
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/** |
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* Return the bytes of the 'fmt ' chunk. |
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* @return {!Array<number>} The 'fmt' chunk bytes. |
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* @throws {Error} if no 'fmt ' chunk is present. |
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* @private |
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*/ |
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function getFmtBytes_(wav, uInt32_, uInt16_) { |
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/** @type {!Array<number>} */ |
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let fmtBytes = []; |
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if (wav.fmt.chunkId) { |
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return fmtBytes.concat( |
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packString(wav.fmt.chunkId), |
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pack(wav.fmt.chunkSize, uInt32_), |
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pack(wav.fmt.audioFormat, uInt16_), |
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pack(wav.fmt.numChannels, uInt16_), |
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pack(wav.fmt.sampleRate, uInt32_), |
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pack(wav.fmt.byteRate, uInt32_), |
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pack(wav.fmt.blockAlign, uInt16_), |
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pack(wav.fmt.bitsPerSample, uInt16_), |
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getFmtExtensionBytes_(wav, uInt32_, uInt16_)); |
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} |
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throw Error('Could not find the "fmt " chunk'); |
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} |
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/** |
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* Return the bytes of the fmt extension fields. |
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287
|
|
|
* @return {!Array<number>} The fmt extension bytes. |
|
288
|
|
|
* @private |
|
289
|
|
|
*/ |
|
290
|
|
|
function getFmtExtensionBytes_(wav, uInt32_, uInt16_) { |
|
291
|
|
|
/** @type {!Array<number>} */ |
|
292
|
|
|
let extension = []; |
|
293
|
|
|
if (wav.fmt.chunkSize > 16) { |
|
294
|
|
|
extension = extension.concat( |
|
295
|
|
|
pack(wav.fmt.cbSize, uInt16_)); |
|
296
|
|
|
} |
|
297
|
|
|
if (wav.fmt.chunkSize > 18) { |
|
298
|
|
|
extension = extension.concat( |
|
299
|
|
|
pack(wav.fmt.validBitsPerSample, uInt16_)); |
|
300
|
|
|
} |
|
301
|
|
|
if (wav.fmt.chunkSize > 20) { |
|
302
|
|
|
extension = extension.concat( |
|
303
|
|
|
pack(wav.fmt.dwChannelMask, uInt32_)); |
|
304
|
|
|
} |
|
305
|
|
|
if (wav.fmt.chunkSize > 24) { |
|
306
|
|
|
extension = extension.concat( |
|
307
|
|
|
pack(wav.fmt.subformat[0], uInt32_), |
|
308
|
|
|
pack(wav.fmt.subformat[1], uInt32_), |
|
309
|
|
|
pack(wav.fmt.subformat[2], uInt32_), |
|
310
|
|
|
pack(wav.fmt.subformat[3], uInt32_)); |
|
311
|
|
|
} |
|
312
|
|
|
return extension; |
|
313
|
|
|
} |
|
314
|
|
|
|
|
315
|
|
|
/** |
|
316
|
|
|
* Return the bytes of the 'LIST' chunk. |
|
317
|
|
|
* @return {!Array<number>} The 'LIST' chunk bytes. |
|
318
|
|
|
*/ |
|
319
|
|
|
function getLISTBytes_(wav, uInt32_, uInt16_) { |
|
320
|
|
|
/** @type {!Array<number>} */ |
|
321
|
|
|
let bytes = []; |
|
322
|
|
|
for (let i=0; i<wav.LIST.length; i++) { |
|
323
|
|
|
/** @type {!Array<number>} */ |
|
324
|
|
|
let subChunksBytes = getLISTSubChunksBytes_( |
|
325
|
|
|
wav.LIST[i].subChunks, wav.LIST[i].format, wav, uInt32_, uInt16_); |
|
326
|
|
|
bytes = bytes.concat( |
|
327
|
|
|
packString(wav.LIST[i].chunkId), |
|
328
|
|
|
pack(subChunksBytes.length + 4, uInt32_), |
|
329
|
|
|
packString(wav.LIST[i].format), |
|
330
|
|
|
subChunksBytes); |
|
331
|
|
|
} |
|
332
|
|
|
return bytes; |
|
333
|
|
|
} |
|
334
|
|
|
|
|
335
|
|
|
/** |
|
336
|
|
|
* Return the bytes of the sub chunks of a 'LIST' chunk. |
|
337
|
|
|
* @param {!Array<!Object>} subChunks The 'LIST' sub chunks. |
|
338
|
|
|
* @param {string} format The format of the 'LIST' chunk. |
|
339
|
|
|
* Currently supported values are 'adtl' or 'INFO'. |
|
340
|
|
|
* @return {!Array<number>} The sub chunk bytes. |
|
341
|
|
|
* @private |
|
342
|
|
|
*/ |
|
343
|
|
|
function getLISTSubChunksBytes_(subChunks, format, wav, uInt32_, uInt16_) { |
|
344
|
|
|
/** @type {!Array<number>} */ |
|
345
|
|
|
let bytes = []; |
|
346
|
|
|
for (let i=0; i<subChunks.length; i++) { |
|
347
|
|
|
if (format == 'INFO') { |
|
348
|
|
|
bytes = bytes.concat( |
|
349
|
|
|
packString(subChunks[i].chunkId), |
|
350
|
|
|
pack(subChunks[i].value.length + 1, uInt32_), |
|
351
|
|
|
io.writeString_( |
|
352
|
|
|
subChunks[i].value, subChunks[i].value.length)); |
|
353
|
|
|
bytes.push(0); |
|
354
|
|
|
} else if (format == 'adtl') { |
|
355
|
|
|
if (['labl', 'note'].indexOf(subChunks[i].chunkId) > -1) { |
|
356
|
|
|
bytes = bytes.concat( |
|
357
|
|
|
packString(subChunks[i].chunkId), |
|
358
|
|
|
pack( |
|
359
|
|
|
subChunks[i].value.length + 4 + 1, uInt32_), |
|
360
|
|
|
pack(subChunks[i].dwName, uInt32_), |
|
361
|
|
|
io.writeString_( |
|
362
|
|
|
subChunks[i].value, |
|
363
|
|
|
subChunks[i].value.length)); |
|
364
|
|
|
bytes.push(0); |
|
365
|
|
|
} else if (subChunks[i].chunkId == 'ltxt') { |
|
366
|
|
|
bytes = bytes.concat( |
|
367
|
|
|
getLtxtChunkBytes_(subChunks[i], wav, uInt32_, uInt16_)); |
|
368
|
|
|
} |
|
369
|
|
|
} |
|
370
|
|
|
if (bytes.length % 2) { |
|
371
|
|
|
bytes.push(0); |
|
372
|
|
|
} |
|
373
|
|
|
} |
|
374
|
|
|
return bytes; |
|
375
|
|
|
} |
|
376
|
|
|
|
|
377
|
|
|
/** |
|
378
|
|
|
* Return the bytes of a 'ltxt' chunk. |
|
379
|
|
|
* @param {!Object} ltxt the 'ltxt' chunk. |
|
380
|
|
|
* @return {!Array<number>} The 'ltxt' chunk bytes. |
|
381
|
|
|
* @private |
|
382
|
|
|
*/ |
|
383
|
|
|
function getLtxtChunkBytes_(ltxt, wav, uInt32_, uInt16_) { |
|
384
|
|
|
return [].concat( |
|
385
|
|
|
packString(ltxt.chunkId), |
|
386
|
|
|
pack(ltxt.value.length + 20, uInt32_), |
|
387
|
|
|
pack(ltxt.dwName, uInt32_), |
|
388
|
|
|
pack(ltxt.dwSampleLength, uInt32_), |
|
389
|
|
|
pack(ltxt.dwPurposeID, uInt32_), |
|
390
|
|
|
pack(ltxt.dwCountry, uInt16_), |
|
391
|
|
|
pack(ltxt.dwLanguage, uInt16_), |
|
392
|
|
|
pack(ltxt.dwDialect, uInt16_), |
|
393
|
|
|
pack(ltxt.dwCodePage, uInt16_), |
|
394
|
|
|
io.writeString_(ltxt.value, ltxt.value.length)); |
|
395
|
|
|
} |
|
396
|
|
|
|
|
397
|
|
|
/** |
|
398
|
|
|
* Return the bytes of the 'junk' chunk. |
|
399
|
|
|
* @return {!Array<number>} The 'junk' chunk bytes. |
|
400
|
|
|
* @private |
|
401
|
|
|
*/ |
|
402
|
|
|
function getJunkBytes_(wav, uInt32_, uInt16_) { |
|
|
|
|
|
|
403
|
|
|
/** @type {!Array<number>} */ |
|
404
|
|
|
let bytes = []; |
|
405
|
|
|
if (wav.junk.chunkId) { |
|
406
|
|
|
return bytes.concat( |
|
407
|
|
|
packString(wav.junk.chunkId), |
|
408
|
|
|
pack(wav.junk.chunkData.length, uInt32_), |
|
409
|
|
|
wav.junk.chunkData); |
|
410
|
|
|
} |
|
411
|
|
|
return bytes; |
|
412
|
|
|
} |
|
413
|
|
|
|
rochars /
wavefile
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This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.