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json-to-web-audio.js
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json-to-web-audio.js
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/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId])
/******/ return installedModules[moduleId].exports;
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ exports: {},
/******/ id: moduleId,
/******/ loaded: false
/******/ };
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/ // Flag the module as loaded
/******/ module.loaded = true;
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/ // Load entry module and return exports
/******/ return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {
module.exports = __webpack_require__(1);
/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _Oscillator = __webpack_require__(2);
var _Filter = __webpack_require__(3);
var Voice = function Voice(audioContext, voiceConfig) {
return Object.assign({}, (0, _Oscillator.Oscillator)(audioContext, voiceConfig), (0, _Filter.Filter)(audioContext, voiceConfig));
};
exports.Voice = Voice;
/***/ },
/* 2 */
/***/ function(module, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var Oscillator = function Oscillator(audioContext, voiceConfig) {
var oscillators = [];
var masterVca = audioContext.createGain();
masterVca.gain.value = voiceConfig.gain / 100;
var me = {
getOscillatorConfig: function getOscillatorConfig(oscNumber) {
return voiceConfig.oscillators[oscNumber];
},
createOscillatorById: function createOscillatorById(oscNumber) {
var oscConfig = me.getOscillatorConfig(oscNumber);
me.createOscillator(oscConfig);
},
applyTuning: function applyTuning(vco, tuning) {
if (tuning !== 0) {
vco.detune.value = tuning;
}
return vco;
},
setPipeLengthOnOscillator: function setPipeLengthOnOscillator(vco, pipeLength) {
if (pipeLength !== 0) {
vco.pipeLength = pipeLength;
}
return vco;
},
createOscillator: function createOscillator(oscConfig) {
var vco = audioContext.createOscillator();
vco.type = oscConfig.type;
vco = me.applyTuning(vco, oscConfig.tuning);
vco = me.setPipeLengthOnOscillator(vco, oscConfig.pipeLength);
me.connectInputToVca(me.addOscillatorGain(vco, oscConfig.gain));
return vco;
},
connectInputToVca: function connectInputToVca(node) {
node.connect(masterVca);
},
connectVcaToOutput: function connectVcaToOutput(node) {
masterVca.connect(node);
},
addOscillatorGain: function addOscillatorGain(vco, vcoGain) {
var vcoGainControl = audioContext.createGain();
vcoGainControl.gain.value = vcoGain / 100;
vco.connect(vcoGainControl);
return vcoGainControl;
},
play: function play() {
oscillators.forEach(function (osc) {
me.start(osc, 0, 3, 440);
});
},
start: function start(vco, time, noteLength, frequency) {
vco.frequency.value = me.applyPipeLength(frequency, vco.pipeLength);
vco.start(time);
vco.stop(time + noteLength);
},
applyPipeLength: function applyPipeLength(frequency, pipeLength) {
return frequency / (parseInt(pipeLength, 10) / 8);
},
setupOscillators: function setupOscillators() {
voiceConfig.oscillators.forEach(function (osc) {
oscillators.push(me.createOscillator(osc));
});
//me.connectVcaToOutput(output);
return masterVca;
}
};
return me;
};
exports.Oscillator = Oscillator;
/***/ },
/* 3 */
/***/ function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : { "default": obj };
}
var _tunajs = __webpack_require__(4);
var _tunajs2 = _interopRequireDefault(_tunajs);
var Filter = function Filter(audioContext, voiceConfig) {
var filters = [];
var me = {
setUpFilters: function setUpFilters(filterConfigs, input, output) {
var filter;
var previousFilter = undefined;
filterConfigs.forEach(function (filterConfig, key) {
if (filterConfig.tunaType !== undefined) {
filter = me.createTunaFilter(filterConfig);
} else {
filter = me.createFilter(filterConfig);
}
filters.push(filter);
});
input.connect(filters[0]);
filters.forEach(function (filter) {
if (typeof previousFilter !== "undefined") {
previousFilter.connect(filter);
}
previousFilter = filter;
});
filters[filterConfigs.length - 1].connect(output);
},
createFilter: function createFilter(filterConfig) {
var filter = audioContext.createBiquadFilter();
filter.type = filterConfig.props.type;
filter.frequency.value = filterConfig.props.value;
return filter;
},
createTunaFilter: function createTunaFilter(filterConfig) {
var tuna = new _tunajs2["default"](audioContext);
return new tuna[filterConfig.tunaType](filterConfig.props);
}
};
return me;
};
exports.Filter = Filter;
/***/ },
/* 4 */
/***/ function(module, exports, __webpack_require__) {
/*
Copyright (c) 2012 DinahMoe AB & Oskar Eriksson
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*global module*/
(function() {
var userContext,
userInstance,
pipe = function(param, val) {
param.value = val;
},
Super = Object.create(null, {
activate: {
writable: true,
value: function(doActivate) {
if (doActivate) {
this.input.disconnect();
this.input.connect(this.activateNode);
if (this.activateCallback) {
this.activateCallback(doActivate);
}
} else {
this.input.disconnect();
this.input.connect(this.output);
}
}
},
bypass: {
get: function() {
return this._bypass;
},
set: function(value) {
if (this._lastBypassValue === value) {
return;
}
this._bypass = value;
this.activate(!value);
this._lastBypassValue = value;
}
},
connect: {
value: function(target) {
this.output.connect(target);
}
},
disconnect: {
value: function(target) {
this.output.disconnect(target);
}
},
connectInOrder: {
value: function(nodeArray) {
var i = nodeArray.length - 1;
while (i--) {
if (!nodeArray[i].connect) {
return console.error("AudioNode.connectInOrder: TypeError: Not an AudioNode.", nodeArray[i]);
}
if (nodeArray[i + 1].input) {
nodeArray[i].connect(nodeArray[i + 1].input);
} else {
nodeArray[i].connect(nodeArray[i + 1]);
}
}
}
},
getDefaults: {
value: function() {
var result = {};
for (var key in this.defaults) {
result[key] = this.defaults[key].value;
}
return result;
}
},
automate: {
value: function(property, value, duration, startTime) {
var start = startTime ? ~~(startTime / 1000) : userContext.currentTime,
dur = duration ? ~~(duration / 1000) : 0,
_is = this.defaults[property],
param = this[property],
method;
if (param) {
if (_is.automatable) {
if (!duration) {
method = "setValueAtTime";
} else {
method = "linearRampToValueAtTime";
param.cancelScheduledValues(start);
param.setValueAtTime(param.value, start);
}
param[method](value, dur + start);
} else {
param = value;
}
} else {
console.error("Invalid Property for " + this.name);
}
}
}
}),
FLOAT = "float",
BOOLEAN = "boolean",
STRING = "string",
INT = "int";
if (typeof module !== "undefined" && module.exports) {
module.exports = Tuna;
} else if (true) {
window.define("Tuna", definition);
} else {
window.Tuna = Tuna;
}
function definition() {
return Tuna;
}
function Tuna(context) {
if (!(this instanceof Tuna)) {
return new Tuna(context);
}
var _window = typeof window === 'undefined' ? {} : window;
if (!_window.AudioContext) {
_window.AudioContext = _window.webkitAudioContext;
}
if (!context) {
console.log("tuna.js: Missing audio context! Creating a new context for you.");
context = _window.AudioContext && (new _window.AudioContext());
}
if (!context) {
throw new Error("Tuna cannot initialize because this environment does not support web audio.");
}
connectify(context);
userContext = context;
userInstance = this;
}
function connectify(context) {
if (context.__connectified__ === true) return;
var gain = context.createGain(),
proto = Object.getPrototypeOf(Object.getPrototypeOf(gain)),
oconnect = proto.connect;
proto.connect = shimConnect;
context.__connectified__ = true; // Prevent overriding connect more than once
function shimConnect() {
var node = arguments[0];
arguments[0] = Super.isPrototypeOf ? (Super.isPrototypeOf(node) ? node.input : node) : (node.input || node);
oconnect.apply(this, arguments);
return node;
}
}
function dbToWAVolume(db) {
return Math.max(0, Math.round(100 * Math.pow(2, db / 6)) / 100);
}
function fmod(x, y) {
// http://kevin.vanzonneveld.net
// * example 1: fmod(5.7, 1.3);
// * returns 1: 0.5
var tmp, tmp2, p = 0,
pY = 0,
l = 0.0,
l2 = 0.0;
tmp = x.toExponential().match(/^.\.?(.*)e(.+)$/);
p = parseInt(tmp[2], 10) - (tmp[1] + "").length;
tmp = y.toExponential().match(/^.\.?(.*)e(.+)$/);
pY = parseInt(tmp[2], 10) - (tmp[1] + "").length;
if (pY > p) {
p = pY;
}
tmp2 = (x % y);
if (p < -100 || p > 20) {
// toFixed will give an out of bound error so we fix it like this:
l = Math.round(Math.log(tmp2) / Math.log(10));
l2 = Math.pow(10, l);
return (tmp2 / l2).toFixed(l - p) * l2;
} else {
return parseFloat(tmp2.toFixed(-p));
}
}
function sign(x) {
if (x === 0) {
return 1;
} else {
return Math.abs(x) / x;
}
}
function tanh(n) {
return (Math.exp(n) - Math.exp(-n)) / (Math.exp(n) + Math.exp(-n));
}
function initValue(userVal, defaultVal) {
return userVal === undefined ? defaultVal : userVal;
}
Tuna.prototype.Bitcrusher = function(properties) {
if (!properties) {
properties = this.getDefaults();
}
this.bufferSize = properties.bufferSize || this.defaults.bufferSize.value;
this.input = userContext.createGain();
this.activateNode = userContext.createGain();
this.processor = userContext.createScriptProcessor(this.bufferSize, 1, 1);
this.output = userContext.createGain();
this.activateNode.connect(this.processor);
this.processor.connect(this.output);
var phaser = 0,
last = 0,
input, output, step, i, length;
this.processor.onaudioprocess = function(e) {
input = e.inputBuffer.getChannelData(0),
output = e.outputBuffer.getChannelData(0),
step = Math.pow(1 / 2, this.bits);
length = input.length;
for (i = 0; i < length; i++) {
phaser += this.normfreq;
if (phaser >= 1.0) {
phaser -= 1.0;
last = step * Math.floor(input[i] / step + 0.5);
}
output[i] = last;
}
};
this.bits = properties.bits || this.defaults.bits.value;
this.normfreq = initValue(properties.normfreq, this.defaults.normfreq.value);
this.bypass = properties.bypass || false;
};
Tuna.prototype.Bitcrusher.prototype = Object.create(Super, {
name: {
value: "Bitcrusher"
},
defaults: {
writable: true,
value: {
bits: {
value: 4,
min: 1,
max: 16,
automatable: false,
type: INT
},
bufferSize: {
value: 4096,
min: 256,
max: 16384,
automatable: false,
type: INT
},
bypass: {
value: false,
automatable: false,
type: BOOLEAN
},
normfreq: {
value: 0.1,
min: 0.0001,
max: 1.0,
automatable: false,
type: FLOAT
}
}
},
bits: {
enumerable: true,
get: function() {
return this.processor.bits;
},
set: function(value) {
this.processor.bits = value;
}
},
normfreq: {
enumerable: true,
get: function() {
return this.processor.normfreq;
},
set: function(value) {
this.processor.normfreq = value;
}
}
});
Tuna.prototype.Cabinet = function(properties) {
if (!properties) {
properties = this.getDefaults();
}
this.input = userContext.createGain();
this.activateNode = userContext.createGain();
this.convolver = this.newConvolver(properties.impulsePath || "../impulses/impulse_guitar.wav");
this.makeupNode = userContext.createGain();
this.output = userContext.createGain();
this.activateNode.connect(this.convolver.input);
this.convolver.output.connect(this.makeupNode);
this.makeupNode.connect(this.output);
this.makeupGain = initValue(properties.makeupGain, this.defaults.makeupGain);
this.bypass = properties.bypass || false;
};
Tuna.prototype.Cabinet.prototype = Object.create(Super, {
name: {
value: "Cabinet"
},
defaults: {
writable: true,
value: {
makeupGain: {
value: 1,
min: 0,
max: 20,
automatable: true,
type: FLOAT
},
bypass: {
value: false,
automatable: false,
type: BOOLEAN
}
}
},
makeupGain: {
enumerable: true,
get: function() {
return this.makeupNode.gain;
},
set: function(value) {
this.makeupNode.gain.value = value;
}
},
newConvolver: {
value: function(impulsePath) {
return new userInstance.Convolver({
impulse: impulsePath,
dryLevel: 0,
wetLevel: 1
});
}
}
});
Tuna.prototype.Chorus = function(properties) {
if (!properties) {
properties = this.getDefaults();
}
this.input = userContext.createGain();
this.attenuator = this.activateNode = userContext.createGain();
this.splitter = userContext.createChannelSplitter(2);
this.delayL = userContext.createDelay();
this.delayR = userContext.createDelay();
this.feedbackGainNodeLR = userContext.createGain();
this.feedbackGainNodeRL = userContext.createGain();
this.merger = userContext.createChannelMerger(2);
this.output = userContext.createGain();
this.lfoL = new userInstance.LFO({
target: this.delayL.delayTime,
callback: pipe
});
this.lfoR = new userInstance.LFO({
target: this.delayR.delayTime,
callback: pipe
});
this.input.connect(this.attenuator);
this.attenuator.connect(this.output);
this.attenuator.connect(this.splitter);
this.splitter.connect(this.delayL, 0);
this.splitter.connect(this.delayR, 1);
this.delayL.connect(this.feedbackGainNodeLR);
this.delayR.connect(this.feedbackGainNodeRL);
this.feedbackGainNodeLR.connect(this.delayR);
this.feedbackGainNodeRL.connect(this.delayL);
this.delayL.connect(this.merger, 0, 0);
this.delayR.connect(this.merger, 0, 1);
this.merger.connect(this.output);
this.feedback = initValue(properties.feedback, this.defaults.feedback.value);
this.rate = initValue(properties.rate, this.defaults.rate.value);
this.delay = initValue(properties.delay, this.defaults.delay.value);
this.depth = initValue(properties.depth, this.defaults.depth.value);
this.lfoR.phase = Math.PI / 2;
this.attenuator.gain.value = 0.6934; // 1 / (10 ^ (((20 * log10(3)) / 3) / 20))
this.lfoL.activate(true);
this.lfoR.activate(true);
this.bypass = properties.bypass || false;
};
Tuna.prototype.Chorus.prototype = Object.create(Super, {
name: {
value: "Chorus"
},
defaults: {
writable: true,
value: {
feedback: {
value: 0.4,
min: 0,
max: 0.95,
automatable: false,
type: FLOAT
},
delay: {
value: 0.0045,
min: 0,
max: 1,
automatable: false,
type: FLOAT
},
depth: {
value: 0.7,
min: 0,
max: 1,
automatable: false,
type: FLOAT
},
rate: {
value: 1.5,
min: 0,
max: 8,
automatable: false,
type: FLOAT
},
bypass: {
value: false,
automatable: false,
type: BOOLEAN
}
}
},
delay: {
enumerable: true,
get: function() {
return this._delay;
},
set: function(value) {
this._delay = 0.0002 * (Math.pow(10, value) * 2);
this.lfoL.offset = this._delay;
this.lfoR.offset = this._delay;
this._depth = this._depth;
}
},
depth: {
enumerable: true,
get: function() {
return this._depth;
},
set: function(value) {
this._depth = value;
this.lfoL.oscillation = this._depth * this._delay;
this.lfoR.oscillation = this._depth * this._delay;
}
},
feedback: {
enumerable: true,
get: function() {
return this._feedback;
},
set: function(value) {
this._feedback = value;
this.feedbackGainNodeLR.gain.value = this._feedback;
this.feedbackGainNodeRL.gain.value = this._feedback;
}
},
rate: {
enumerable: true,
get: function() {
return this._rate;
},
set: function(value) {
this._rate = value;
this.lfoL.frequency = this._rate;
this.lfoR.frequency = this._rate;
}
}
});
Tuna.prototype.Compressor = function(properties) {
if (!properties) {
properties = this.getDefaults();
}
this.input = userContext.createGain();
this.compNode = this.activateNode = userContext.createDynamicsCompressor();
this.makeupNode = userContext.createGain();
this.output = userContext.createGain();
this.compNode.connect(this.makeupNode);
this.makeupNode.connect(this.output);
this.automakeup = initValue(properties.automakeup, this.defaults.automakeup.value);
this.makeupGain = initValue(properties.makeupGain, this.defaults.makeupGain.value);
this.threshold = initValue(properties.threshold, this.defaults.threshold.value);
this.release = initValue(properties.release, this.defaults.release.value);
this.attack = initValue(properties.attack, this.defaults.attack.value);
this.ratio = properties.ratio || this.defaults.ratio.value;
this.knee = initValue(properties.knee, this.defaults.knee.value);
this.bypass = properties.bypass || false;
};
Tuna.prototype.Compressor.prototype = Object.create(Super, {
name: {
value: "Compressor"
},
defaults: {
writable: true,
value: {
threshold: {
value: -20,
min: -60,
max: 0,
automatable: true,
type: FLOAT
},
release: {
value: 250,
min: 10,
max: 2000,
automatable: true,
type: FLOAT
},
makeupGain: {
value: 1,
min: 1,
max: 100,
automatable: true,
type: FLOAT
},
attack: {
value: 1,
min: 0,
max: 1000,
automatable: true,
type: FLOAT
},
ratio: {
value: 4,
min: 1,
max: 50,
automatable: true,
type: FLOAT
},
knee: {
value: 5,
min: 0,
max: 40,
automatable: true,
type: FLOAT
},
automakeup: {
value: false,
automatable: false,
type: BOOLEAN
},
bypass: {
value: false,
automatable: false,
type: BOOLEAN
}
}
},
computeMakeup: {
value: function() {
var magicCoefficient = 4, // raise me if the output is too hot
c = this.compNode;
return -(c.threshold.value - c.threshold.value / c.ratio.value) / magicCoefficient;
}
},
automakeup: {
enumerable: true,
get: function() {
return this._automakeup;
},
set: function(value) {
this._automakeup = value;
if (this._automakeup) this.makeupGain = this.computeMakeup();
}
},
threshold: {
enumerable: true,
get: function() {
return this.compNode.threshold;
},
set: function(value) {
this.compNode.threshold.value = value;
if (this._automakeup) this.makeupGain = this.computeMakeup();
}
},
ratio: {
enumerable: true,
get: function() {
return this.compNode.ratio;
},
set: function(value) {
this.compNode.ratio.value = value;
if (this._automakeup) this.makeupGain = this.computeMakeup();
}
},
knee: {
enumerable: true,
get: function() {
return this.compNode.knee;
},
set: function(value) {
this.compNode.knee.value = value;
if (this._automakeup) this.makeupGain = this.computeMakeup();
}
},
attack: {
enumerable: true,
get: function() {
return this.compNode.attack;
},
set: function(value) {
this.compNode.attack.value = value / 1000;
}
},
release: {
enumerable: true,
get: function() {
return this.compNode.release;
},
set: function(value) {
this.compNode.release.value = value / 1000;
}
},
makeupGain: {
enumerable: true,
get: function() {
return this.makeupNode.gain;
},
set: function(value) {
this.makeupNode.gain.value = dbToWAVolume(value);
}
}
});
Tuna.prototype.Convolver = function(properties) {
if (!properties) {
properties = this.getDefaults();
}
this.input = userContext.createGain();
this.activateNode = userContext.createGain();
this.convolver = userContext.createConvolver();
this.dry = userContext.createGain();
this.filterLow = userContext.createBiquadFilter();
this.filterHigh = userContext.createBiquadFilter();
this.wet = userContext.createGain();
this.output = userContext.createGain();
this.activateNode.connect(this.filterLow);
this.activateNode.connect(this.dry);
this.filterLow.connect(this.filterHigh);
this.filterHigh.connect(this.convolver);
this.convolver.connect(this.wet);
this.wet.connect(this.output);
this.dry.connect(this.output);
this.dryLevel = initValue(properties.dryLevel, this.defaults.dryLevel.value);
this.wetLevel = initValue(properties.wetLevel, this.defaults.wetLevel.value);
this.highCut = properties.highCut || this.defaults.highCut.value;
this.buffer = properties.impulse || "../impulses/ir_rev_short.wav";
this.lowCut = properties.lowCut || this.defaults.lowCut.value;
this.level = initValue(properties.level, this.defaults.level.value);
this.filterHigh.type = "lowpass";
this.filterLow.type = "highpass";
this.bypass = properties.bypass || false;
};
Tuna.prototype.Convolver.prototype = Object.create(Super, {
name: {
value: "Convolver"
},
defaults: {
writable: true,
value: {
highCut: {
value: 22050,
min: 20,
max: 22050,
automatable: true,
type: FLOAT
},
lowCut: {
value: 20,
min: 20,
max: 22050,
automatable: true,
type: FLOAT
},
dryLevel: {
value: 1,
min: 0,
max: 1,
automatable: true,
type: FLOAT
},
wetLevel: {
value: 1,
min: 0,
max: 1,
automatable: true,
type: FLOAT
},
level: {
value: 1,
min: 0,
max: 1,
automatable: true,
type: FLOAT
}
}
},
lowCut: {
get: function() {
return this.filterLow.frequency;
},
set: function(value) {
this.filterLow.frequency.value = value;
}
},
highCut: {
get: function() {
return this.filterHigh.frequency;
},
set: function(value) {