virtual-audio-graph/src/nodeFactories.ts

Library for declaratively manipulating the Web Audio API

import { Output } from "./types";
import StandardVirtualAudioNode from "./VirtualAudioNodes/StandardVirtualAudioNode";

const createNodeConstructor =
  (nodeName: string) =>
  (output?: Output, ...rest: any[]): StandardVirtualAudioNode => {
    if (nodeName === "mediaStreamDestination") {
      return new StandardVirtualAudioNode(nodeName);
    }
    if (output == null) {
      throw new Error(`Output not specified for ${nodeName}`);
    }
    return new StandardVirtualAudioNode(nodeName, output, ...rest);
  };

export const analyser = createNodeConstructor("analyser");
export const biquadFilter = createNodeConstructor("biquadFilter");
export const bufferSource = createNodeConstructor("bufferSource");
export const channelMerger = createNodeConstructor("channelMerger");
export const channelSplitter = createNodeConstructor("channelSplitter");
export const convolver = createNodeConstructor("convolver");
export const delay = createNodeConstructor("delay");
export const dynamicsCompressor = createNodeConstructor("dynamicsCompressor");
export const gain = createNodeConstructor("gain");
export const mediaElementSource = createNodeConstructor("mediaElementSource");
export const mediaStreamDestination = createNodeConstructor(
  "mediaStreamDestination",
);
export const mediaStreamSource = createNodeConstructor("mediaStreamSource");
export const oscillator = createNodeConstructor("oscillator");
export const panner = createNodeConstructor("panner");
export const stereoPanner = createNodeConstructor("stereoPanner");
export const waveShaper = createNodeConstructor("waveShaper");