react-native-audio-api/lib/module/core/WaveShaperNode.js

react-native-audio-api provides system for controlling audio in React Native environment compatible with Web Audio API specification

"use strict";

import AudioNode from "./AudioNode.js";
import { InvalidStateError } from "../errors/index.js";
export default class WaveShaperNode extends AudioNode {
  isCurveSet = false;
  _curve = null;
  constructor(context, options) {
    const node = context.context.createWaveShaper(options || {});
    super(context, node);
    if (options?.curve) {
      this._curve = options.curve;
      this.isCurveSet = true;
    }
  }
  get curve() {
    return this._curve;
  }
  get oversample() {
    return this.node.oversample;
  }
  set curve(curve) {
    if (curve !== null) {
      if (this.isCurveSet) {
        throw new InvalidStateError('The curve can only be set once and cannot be changed afterwards.');
      }
      if (curve.length < 2) {
        throw new InvalidStateError('The curve must have at least two values if not null.');
      }
      this.isCurveSet = true;
    }
    this.node.setCurve(curve);
  }
  set oversample(value) {
    this.node.oversample = value;
  }
}
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