const MultiStreamsMixer = require('multistreamsmixer');
import MultiStreamsMixer from 'multistreamsmixer';

const audioMixer = new MultiStreamsMixer([microphone1, microphone2]);

// record using MediaRecorder API
const recorder = new MediaRecorder(audioMixer.getMixedStream());

// or share using WebRTC
rtcPeerConnection.addStream(audioMixer.getMixedStream());

screenStream.fullcanvas = true;
screenStream.width = screen.width; // or 3840
screenStream.height = screen.height; // or 2160 

cameraStream.width = parseInt((20 / 100) * screenStream.width);
cameraStream.height = parseInt((20 / 100) * screenStream.height);
cameraStream.top = screenStream.height - cameraStream.height;
cameraStream.left = screenStream.width - cameraStream.width;

const mixer = new MultiStreamsMixer([screenStream, cameraStream]);

rtcPeerConnection.addStream(mixer.getMixedStream());

mixer.frameInterval = 1;
mixer.startDrawingFrames();

btnStopStreams.onclick = function() {
    mixer.releaseStreams();
};

btnAppendNewStreams.onclick = function() {
    mixer.appendStreams([anotherStream]);
};

btnStopScreenSharing.onclick = function() {
    // replace all old streams with this one
    // it will replace only video tracks
    mixer.resetVideoStreams([cameraStreamOnly]);
};

const mixer = new MultiStreamsMixer([camera1, camera2]);

rtcPeerConnection.addStream(mixer.getMixedStream());

mixer.frameInterval = 1;
mixer.startDrawingFrames();

import { MultiStreamsMixer } from 'yourPath/MultiStreamsMixer';
let mixer = new MultiStreamsMixer([stream1,stream2]);
mixer.appendStreams(stream3);
let mixed = mixer.getMixedStream();

var canvas = document.querySelector('canvas.multi-streams-mixer');
var videos = document.querySelectorAll('video.multi-streams-mixer');

canvas.style.opacity = .1;

// default elementClass is "multi-streams-mixer"
var instance = new MultiStreamsMixer(arrayOfMediaStreams, elementClass);

MultiStreamsMixer.prototype = {
	// get readonly MediaStream
	getMixedStream: function() {},

	// add more streams
	appendStreams: function(arrayOfMediaStreams) {},

	// replace with set of your own streams
	resetVideoStreams: function(arrayOfMediaStreams) {},

	// clear all the data
	clearRecordedData: function() {}
};