mirror of
https://github.com/Tonejs/Tone.js
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408 lines
12 KiB
JavaScript
408 lines
12 KiB
JavaScript
define(["Tone/core/Tone", "Tone/source/Source", "Tone/source/Oscillator", "Tone/source/PulseOscillator", "Tone/source/PWMOscillator",
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"Tone/source/FMOscillator", "Tone/source/AMOscillator", "Tone/source/FatOscillator"], function(Tone){
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"use strict";
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/**
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* @class Tone.OmniOscillator aggregates Tone.Oscillator, Tone.PulseOscillator,
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* Tone.PWMOscillator, Tone.FMOscillator, Tone.AMOscillator, and Tone.FatOscillator
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* into one class. The oscillator class can be changed by setting the `type`.
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* `omniOsc.type = "pwm"` will set it to the Tone.PWMOscillator. Prefixing
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* any of the basic types ("sine", "square4", etc.) with "fm", "am", or "fat"
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* will use the FMOscillator, AMOscillator or FatOscillator respectively.
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* For example: `omniOsc.type = "fatsawtooth"` will create set the oscillator
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* to a FatOscillator of type "sawtooth".
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*
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* @extends {Tone.Source}
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* @constructor
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* @param {Frequency} frequency The initial frequency of the oscillator.
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* @param {String} type The type of the oscillator.
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* @example
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* var omniOsc = new Tone.OmniOscillator("C#4", "pwm");
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*/
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Tone.OmniOscillator = function(){
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var options = Tone.defaults(arguments, ["frequency", "type"], Tone.OmniOscillator);
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Tone.Source.call(this, options);
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/**
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* The frequency control.
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* @type {Frequency}
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* @signal
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*/
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this.frequency = new Tone.Signal(options.frequency, Tone.Type.Frequency);
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/**
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* The detune control
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* @type {Cents}
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* @signal
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*/
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this.detune = new Tone.Signal(options.detune, Tone.Type.Cents);
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/**
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* the type of the oscillator source
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* @type {String}
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* @private
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*/
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this._sourceType = undefined;
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/**
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* the oscillator
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* @type {Tone.Oscillator}
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* @private
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*/
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this._oscillator = null;
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//set the oscillator
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this.type = options.type;
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this._readOnly(["frequency", "detune"]);
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//set the options
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this.set(options);
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};
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Tone.extend(Tone.OmniOscillator, Tone.Source);
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/**
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* default values
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* @static
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* @type {Object}
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* @const
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*/
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Tone.OmniOscillator.defaults = {
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"frequency" : 440,
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"detune" : 0,
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"type" : "sine",
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"phase" : 0,
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};
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/**
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* @enum {String}
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* @private
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*/
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var OmniOscType = {
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Pulse : "PulseOscillator",
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PWM : "PWMOscillator",
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Osc : "Oscillator",
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FM : "FMOscillator",
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AM : "AMOscillator",
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Fat : "FatOscillator"
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};
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/**
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* start the oscillator
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* @param {Time} [time=now] the time to start the oscillator
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* @private
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*/
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Tone.OmniOscillator.prototype._start = function(time){
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this._oscillator.start(time);
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};
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/**
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* start the oscillator
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* @param {Time} [time=now] the time to start the oscillator
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* @private
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*/
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Tone.OmniOscillator.prototype._stop = function(time){
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this._oscillator.stop(time);
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};
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Tone.OmniOscillator.prototype.restart = function(time){
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this._oscillator.restart(time);
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};
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/**
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* The type of the oscillator. Can be any of the basic types: sine, square, triangle, sawtooth. Or
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* prefix the basic types with "fm", "am", or "fat" to use the FMOscillator, AMOscillator or FatOscillator
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* types. The oscillator could also be set to "pwm" or "pulse". All of the parameters of the
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* oscillator's class are accessible when the oscillator is set to that type, but throws an error
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* when it's not.
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*
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* @memberOf Tone.OmniOscillator#
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* @type {String}
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* @name type
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* @example
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* omniOsc.type = "pwm";
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* //modulationFrequency is parameter which is available
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* //only when the type is "pwm".
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* omniOsc.modulationFrequency.value = 0.5;
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* @example
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* //an square wave frequency modulated by a sawtooth
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* omniOsc.type = "fmsquare";
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* omniOsc.modulationType = "sawtooth";
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "type", {
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get : function(){
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var prefix = "";
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if (this._sourceType === OmniOscType.FM){
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prefix = "fm";
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} else if (this._sourceType === OmniOscType.AM){
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prefix = "am";
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} else if (this._sourceType === OmniOscType.Fat){
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prefix = "fat";
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}
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return prefix + this._oscillator.type;
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},
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set : function(type){
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if (type.substr(0, 2) === "fm"){
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this._createNewOscillator(OmniOscType.FM);
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this._oscillator.type = type.substr(2);
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} else if (type.substr(0, 2) === "am"){
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this._createNewOscillator(OmniOscType.AM);
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this._oscillator.type = type.substr(2);
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} else if (type.substr(0, 3) === "fat"){
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this._createNewOscillator(OmniOscType.Fat);
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this._oscillator.type = type.substr(3);
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} else if (type === "pwm"){
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this._createNewOscillator(OmniOscType.PWM);
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} else if (type === "pulse"){
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this._createNewOscillator(OmniOscType.Pulse);
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} else {
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this._createNewOscillator(OmniOscType.Osc);
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this._oscillator.type = type;
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}
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}
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});
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/**
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* The partials of the waveform. A partial represents
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* the amplitude at a harmonic. The first harmonic is the
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* fundamental frequency, the second is the octave and so on
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* following the harmonic series.
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* Setting this value will automatically set the type to "custom".
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* The value is an empty array when the type is not "custom".
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* This is not available on "pwm" and "pulse" oscillator types.
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* @memberOf Tone.OmniOscillator#
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* @type {Array}
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* @name partials
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* @example
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* osc.partials = [1, 0.2, 0.01];
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "partials", {
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get : function(){
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return this._oscillator.partials;
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},
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set : function(partials){
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this._oscillator.partials = partials;
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}
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});
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/**
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* Set a member/attribute of the oscillator.
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* @param {Object|String} params
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* @param {number=} value
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* @param {Time=} rampTime
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* @returns {Tone.OmniOscillator} this
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*/
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Tone.OmniOscillator.prototype.set = function(params, value){
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//make sure the type is set first
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if (params === "type"){
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this.type = value;
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} else if (Tone.isObject(params) && params.hasOwnProperty("type")){
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this.type = params.type;
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}
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//then set the rest
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Tone.prototype.set.apply(this, arguments);
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return this;
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};
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/**
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* connect the oscillator to the frequency and detune signals
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* @private
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*/
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Tone.OmniOscillator.prototype._createNewOscillator = function(oscType){
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if (oscType !== this._sourceType){
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this._sourceType = oscType;
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var OscillatorConstructor = Tone[oscType];
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//short delay to avoid clicks on the change
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var now = this.now();
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if (this._oscillator !== null){
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var oldOsc = this._oscillator;
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oldOsc.stop(now);
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//dispose the old one
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this.context.setTimeout(function(){
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oldOsc.dispose();
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oldOsc = null;
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}, this.blockTime);
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}
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this._oscillator = new OscillatorConstructor();
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this.frequency.connect(this._oscillator.frequency);
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this.detune.connect(this._oscillator.detune);
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this._oscillator.connect(this.output);
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if (this.state === Tone.State.Started){
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this._oscillator.start(now);
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}
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}
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};
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/**
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* The phase of the oscillator in degrees.
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* @memberOf Tone.OmniOscillator#
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* @type {Degrees}
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* @name phase
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "phase", {
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get : function(){
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return this._oscillator.phase;
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},
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set : function(phase){
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this._oscillator.phase = phase;
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}
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});
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/**
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* The width of the oscillator (only if the oscillator is set to "pulse")
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* @memberOf Tone.OmniOscillator#
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* @type {NormalRange}
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* @signal
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* @name width
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* @example
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* var omniOsc = new Tone.OmniOscillator(440, "pulse");
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* //can access the width attribute only if type === "pulse"
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* omniOsc.width.value = 0.2;
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "width", {
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get : function(){
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if (this._sourceType === OmniOscType.Pulse){
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return this._oscillator.width;
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}
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}
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});
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/**
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* The number of detuned oscillators
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* @memberOf Tone.OmniOscillator#
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* @type {Number}
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* @name count
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "count", {
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get : function(){
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if (this._sourceType === OmniOscType.Fat){
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return this._oscillator.count;
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}
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},
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set : function(count){
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if (this._sourceType === OmniOscType.Fat){
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this._oscillator.count = count;
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}
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}
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});
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/**
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* The detune spread between the oscillators. If "count" is
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* set to 3 oscillators and the "spread" is set to 40,
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* the three oscillators would be detuned like this: [-20, 0, 20]
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* for a total detune spread of 40 cents. See Tone.FatOscillator
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* for more info.
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* @memberOf Tone.OmniOscillator#
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* @type {Cents}
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* @name spread
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "spread", {
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get : function(){
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if (this._sourceType === OmniOscType.Fat){
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return this._oscillator.spread;
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}
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},
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set : function(spread){
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if (this._sourceType === OmniOscType.Fat){
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this._oscillator.spread = spread;
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}
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}
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});
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/**
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* The type of the modulator oscillator. Only if the oscillator
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* is set to "am" or "fm" types. see. Tone.AMOscillator or Tone.FMOscillator
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* for more info.
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* @memberOf Tone.OmniOscillator#
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* @type {String}
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* @name modulationType
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "modulationType", {
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get : function(){
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if (this._sourceType === OmniOscType.FM || this._sourceType === OmniOscType.AM){
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return this._oscillator.modulationType;
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}
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},
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set : function(mType){
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if (this._sourceType === OmniOscType.FM || this._sourceType === OmniOscType.AM){
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this._oscillator.modulationType = mType;
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}
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}
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});
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/**
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* The modulation index which is in essence the depth or amount of the modulation. In other terms it is the
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* ratio of the frequency of the modulating signal (mf) to the amplitude of the
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* modulating signal (ma) -- as in ma/mf.
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* See Tone.FMOscillator for more info.
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* @type {Positive}
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* @signal
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* @name modulationIndex
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "modulationIndex", {
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get : function(){
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if (this._sourceType === OmniOscType.FM){
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return this._oscillator.modulationIndex;
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}
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}
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});
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/**
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* Harmonicity is the frequency ratio between the carrier and the modulator oscillators.
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* A harmonicity of 1 gives both oscillators the same frequency.
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* Harmonicity = 2 means a change of an octave. See Tone.AMOscillator or Tone.FMOscillator
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* for more info.
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* @memberOf Tone.OmniOscillator#
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* @signal
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* @type {Positive}
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* @name harmonicity
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "harmonicity", {
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get : function(){
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if (this._sourceType === OmniOscType.FM || this._sourceType === OmniOscType.AM){
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return this._oscillator.harmonicity;
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}
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}
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});
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/**
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* The modulationFrequency Signal of the oscillator
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* (only if the oscillator type is set to pwm). See
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* Tone.PWMOscillator for more info.
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* @memberOf Tone.OmniOscillator#
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* @type {Frequency}
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* @signal
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* @name modulationFrequency
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* @example
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* var omniOsc = new Tone.OmniOscillator(440, "pwm");
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* //can access the modulationFrequency attribute only if type === "pwm"
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* omniOsc.modulationFrequency.value = 0.2;
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*/
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Object.defineProperty(Tone.OmniOscillator.prototype, "modulationFrequency", {
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get : function(){
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if (this._sourceType === OmniOscType.PWM){
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return this._oscillator.modulationFrequency;
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}
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}
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});
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/**
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* Clean up.
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* @return {Tone.OmniOscillator} this
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*/
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Tone.OmniOscillator.prototype.dispose = function(){
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Tone.Source.prototype.dispose.call(this);
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this._writable(["frequency", "detune"]);
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this.detune.dispose();
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this.detune = null;
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this.frequency.dispose();
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this.frequency = null;
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this._oscillator.dispose();
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this._oscillator = null;
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this._sourceType = null;
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return this;
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};
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return Tone.OmniOscillator;
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});
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