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More information: https://www.jsdelivr.com/using-sri-with-dynamic-files\n */\n","// audiobuffer-arraybuffer-serializer Version 0.0.36. Copyright 2018 Taito Suzuki .\n'use strict';\n\nObject.defineProperty(exports, '__esModule', { value: true });\n\nfunction generateAudioBuffer(conf) {\n if (typeof AudioBuffer === 'undefined')\n return new require('audio-buffer')(conf);\n return new AudioBuffer(conf);\n}\n\nfunction isInstanceOfAudioBuffer(v) {\n return (v.constructor.name === 'AudioBuffer');\n}\n\nclass InvalidBufferLengthError extends Error {\n constructor(expected, real) {\n super(`Expected buffer length is '${expected}' but real is '${real}'`);\n }\n}\nclass InvalidAudioBufferLengthError extends Error {\n constructor(expected, real) {\n super(`Expected audio buffer length is '${expected}' but real is '${real}'`);\n }\n}\nclass InvalidSampleRateError extends Error {\n constructor(expected, real) {\n super(`Expected audio buffer sampleRate is '${expected}' but real is '${real}'`);\n }\n}\nclass InvalidNumberOfChannelsError extends Error {\n constructor(expected, real) {\n super(`Expected audio buffer numberOfChannels is '${expected}' but real is '${real}'`);\n }\n}\nclass InvalidDurationError extends Error {}\n\nclass Base {\n constructor(conf) {\n if (conf.littleEndian)\n this.littleEndian = conf.littleEndian;\n else\n this.littleEndian = true;\n }\n generateDestinationBuffer(src) {\n throw new Error(`This method must be implemented: generateDestinationBuffer`);\n }\n validate(src, dst) {\n throw new Error(`This method must be implemented: generateDestinationBuffer`);\n }\n each(src, dst) {\n throw new Error(`This method must be implemented: generateDestinationBuffer`);\n }\n checkArgumentExecute(src, dst) {\n throw new Error(`This method must be implemented: generateDestinationBuffer`);\n }\n execute(src, dst) {\n this.checkSrcExecute(src);\n if (dst === undefined) {\n dst = this.generateDestinationBuffer(src);\n }\n this.checkDstExecute(dst); 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}\n }\n each(src, dst) {\n return encode(src, dst, this.littleEndian);\n }\n validate(src, dst) {\n validateOnEncoder(src, dst);\n }\n /**\n * Serialize AudioBuffer to ArrayBuffer.\n * \n * @param {AudioBuffer} src \n * @param {ArrayBuffer} [dst] If not specified, generate ArrayBuffer object in this method.\n * @return {ArrayBuffer}\n * @throws {InvalidBufferLengthError} If dst.byteLength does not match buffer length to store src.\n */\n execute(src, dst) {\n return super.execute(src, dst);\n }\n}\n\nfunction generateDestinationBufferOnEncoder(src) {\n return new ArrayBuffer(16 + (src.length * src.numberOfChannels * 4));\n}\nfunction validateOnEncoder(src, dst) {\n \n const lengthArrayBuffer =\n 16 /** 4 * 4 **/ +\n (4 * src.length * src.numberOfChannels);\n // console.log(lengthArrayBuffer);\n if (lengthArrayBuffer !== dst.byteLength) { throw new InvalidBufferLengthError(lengthArrayBuffer, dst.byteLength); }\n}\nfunction encode(src, dst, littleEndian) {\n let dv = new DataView(dst);\n dv.setFloat32( 0, src.sampleRate, littleEndian);\n dv.setFloat32( 4, src.duration, littleEndian);\n dv.setUint32 ( 8, src.length, littleEndian);\n dv.setUint32 (12, src.numberOfChannels, littleEndian);\n for (let c = 0; 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}\n if (sampleRate !== dst.sampleRate) { throw new InvalidSampleRateError(sampleRate, dst.sampleRate); }\n if (numberOfChannels !== dst.numberOfChannels) { throw new InvalidNumberOfChannelsError(numberOfChannels, dst.numberOfChannels); }\n // if (duration !== dst.duration) { throw new InvalidDurationError(); }\n}\nfunction decode(src, dst, littleEndian) {\n const dv = new DataView(src);\n for (let c = 0; c < dst.numberOfChannels; c++) {\n let f32 = new Float32Array(dst.length);\n for (let i = 0; i < f32.length; i++) {\n let j = 16 + (c * dst.length * 4) + (i * 4);\n f32[i] = dv.getFloat32(j, littleEndian);\n }\n dst.copyToChannel(f32, c);\n }\n return dst;\n}\n\nclass ObjectKeyNotFoundError extends Error {\n constructor(name, key) {\n super(`'${name}' must have '${key}' property`);\n }\n}\n\n/** Create an instance of ArrayBuffer from AudioBuffer object.\n * @function createArrayBuffer\n * @param {AudioBuffer} audioBuffer\n * @return {ArrayBuffer}\n */\n/** Create an instance of ArrayBuffer from specified configuration.\n * @function createArrayBuffer\n * @param {Object} conf Configuration object for initialization of ArrayBuffer.\n * @param {String} conf.length AudioBuffer.length property. {@link https://developer.mozilla.org/en-US/docs/Web/API/AudioBuffer see}\n * @param {String} conf.numberOfChannels AudioBuffer.numberOfChannels property. {@link https://developer.mozilla.org/en-US/docs/Web/API/AudioBuffer see}\n * @param {String} conf.sampleRate AudioBuffer.sampleRate property. {@link https://developer.mozilla.org/en-US/docs/Web/API/AudioBuffer see}\n * @return {ArrayBuffer}\n */\nfunction createArrayBuffer() {\n if (typeof arguments[0] === 'object') {\n let o = arguments[0];\n if ('length' in o === false) throw new ObjectKeyNotFoundError('object', 'length');\n if ('numberOfChannels' in o === false) throw new ObjectKeyNotFoundError('object', 'numberOfChannels');\n if ('sampleRate' in o === false) throw new ObjectKeyNotFoundError('object', 'sampleRate');\n return generateDestinationBufferOnEncoder(o);\n }\n throw new TypeError(`'arguments[0]' must be object`);\n}\n\nexports.InvalidBufferLengthError = InvalidBufferLengthError;\nexports.InvalidAudioBufferLengthError = InvalidAudioBufferLengthError;\nexports.InvalidSampleRateError = InvalidSampleRateError;\nexports.InvalidNumberOfChannelsError = InvalidNumberOfChannelsError;\nexports.InvalidDurationError = InvalidDurationError;\nexports.Configuration = Configuration;\nexports.Encoder = Encoder;\nexports.Decoder = Decoder;\nexports.ObjectKeyNotFoundError = ObjectKeyNotFoundError;\nexports.createArrayBuffer = createArrayBuffer;\n"]}