mirror of
https://github.com/Tonejs/Tone.js
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70 lines
1.6 KiB
JavaScript
70 lines
1.6 KiB
JavaScript
import Tone from "../core/Tone";
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import "../component/Analyser";
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import "../core/AudioNode";
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/**
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* @class Get the current waveform data of the connected audio source.
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* @extends {Tone.AudioNode}
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* @param {Number=} size The size of the FFT. Value must be a power of
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* two in the range 32 to 32768.
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*/
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Tone.Waveform = function(){
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var options = Tone.defaults(arguments, ["size"], Tone.Waveform);
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options.type = Tone.Analyser.Type.Waveform;
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Tone.AudioNode.call(this);
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/**
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* The analyser node.
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* @private
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* @type {Tone.Analyser}
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*/
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this._analyser = this.input = this.output = new Tone.Analyser(options);
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};
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Tone.extend(Tone.Waveform, Tone.AudioNode);
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/**
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* The default values.
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* @type {Object}
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* @const
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*/
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Tone.Waveform.defaults = {
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"size" : 1024
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};
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/**
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* Gets the waveform of the audio source. Returns the waveform data
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* of length [size](#size) as a Float32Array with values between -1 and 1.
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* @returns {TypedArray}
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*/
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Tone.Waveform.prototype.getValue = function(){
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return this._analyser.getValue();
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};
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/**
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* The size of analysis. This must be a power of two in the range 32 to 32768.
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* @memberOf Tone.Waveform#
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* @type {Number}
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* @name size
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*/
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Object.defineProperty(Tone.Waveform.prototype, "size", {
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get : function(){
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return this._analyser.size;
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},
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set : function(size){
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this._analyser.size = size;
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}
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});
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/**
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* Clean up.
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* @return {Tone.Waveform} this
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*/
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Tone.Waveform.prototype.dispose = function(){
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Tone.AudioNode.prototype.dispose.call(this);
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this._analyser.dispose();
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this._analyser = null;
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};
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export default Tone.Waveform;
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