sono/src/utils/microphone.js

A simple yet powerful JavaScript library for working with Web Audio

import sono from '../core/sono';

function microphone(connected, denied, error) {
    navigator.getUserMedia =
        navigator.mediaDevices.getUserMedia ||
        navigator.getUserMedia ||
        navigator.webkitGetUserMedia ||
        navigator.mozGetUserMedia ||
        navigator.msGetUserMedia;

    error = error || function(err) {
        console.error(err);
    };

    const isSupported = !!navigator.getUserMedia;
    const api = {};
    let stream = null;

    function onConnect(micStream) {
        stream = micStream;
        connected(stream);
    }

    function onError(e) {
        if (denied && e.name === 'PermissionDeniedError' || e === 'PERMISSION_DENIED') {
            denied();
        } else {
            error(e.message || e);
        }
    }

    function connect() {
        if (!isSupported) {
            return api;
        }

        if (navigator.mediaDevices.getUserMedia) {
            navigator.mediaDevices.getUserMedia({
                audio: true
            }).then(onConnect).catch(onError);
        } else {
            navigator.getUserMedia({
                audio: true
            }, onConnect, onError);
        }
        return api;
    }

    function disconnect() {
        if (stream.stop) {
            stream.stop();
        } else {
            stream.getAudioTracks()[0].stop();
        }
        stream = null;
        return api;
    }

    return Object.assign(api, {
        connect,
        disconnect,
        isSupported,
        get stream() {
            return stream;
        }
    });
}

export default sono.register('microphone', microphone, sono.utils);