mirror of
https://github.com/Tonejs/Tone.js
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d9a7520eb6
Can pass in `channels` into constructor which runs a separate analysis on each channel and returns the results as a Float32Array[].
57 lines
1.6 KiB
TypeScript
57 lines
1.6 KiB
TypeScript
import { PowerOfTwo } from "../../core/type/Units";
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import { optionsFromArguments } from "../../core/util/Defaults";
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import { MeterBase, MeterBaseOptions } from "./MeterBase";
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export interface WaveformOptions extends MeterBaseOptions {
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/**
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* The size of the Waveform. Value must be a power of two in the range 16 to 16384.
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*/
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size: PowerOfTwo;
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}
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/**
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* Get the current waveform data of the connected audio source.
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* @category Component
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*/
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export class Waveform extends MeterBase<WaveformOptions> {
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readonly name: string = "Waveform";
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/**
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* @param size The size of the Waveform. Value must be a power of two in the range 16 to 16384.
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*/
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constructor(size?: PowerOfTwo);
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constructor(options?: Partial<WaveformOptions>);
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constructor() {
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super(optionsFromArguments(Waveform.getDefaults(), arguments, ["size"]));
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const options = optionsFromArguments(Waveform.getDefaults(), arguments, ["size"]);
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this._analyser.type = "waveform";
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this.size = options.size;
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}
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static getDefaults(): WaveformOptions {
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return Object.assign(MeterBase.getDefaults(), {
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size: 1024,
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});
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}
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/**
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* Return the waveform for the current time as a Float32Array where each value in the array
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* represents a sample in the waveform.
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*/
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getValue(): Float32Array {
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return this._analyser.getValue() as Float32Array;
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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 16 to 16384.
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* Determines the size of the array returned by [[getValue]].
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*/
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get size(): PowerOfTwo {
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return this._analyser.size;
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}
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set size(size) {
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this._analyser.size = size;
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}
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}
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