bigsnarfdude/index.html

## index.html
<!DOCTYPE html>
<html>
<head>

    <meta charset="utf-8">
    <meta name="description" content="WebRTC code samples">
    <meta name="viewport" content="width=device-width, user-scalable=yes, initial-scale=1, maximum-scale=1">
    <meta itemprop="description" content="Client-side WebRTC code samples">
    <meta itemprop="image" content="../../../images/webrtc-icon-192x192.png">
    <meta itemprop="name" content="WebRTC code samples">
    <meta name="mobile-web-app-capable" content="yes">
    <meta id="theme-color" name="theme-color" content="#ffffff">

    <base target="_blank">

    <title>Select audio and video sources</title>

    <link rel="icon" sizes="192x192" href="../../../images/webrtc-icon-192x192.png">
    <link href="//fonts.googleapis.com/css?family=Roboto:300,400,500,700" rel="stylesheet" type="text/css">
    <link rel="stylesheet" href="../../../css/main.css">

    <style>
        div.select {
            display: inline-block;
            margin: 0 0 1em 0;
        }

        p.small {
            font-size: 0.7em;
        }

        label {
            width: 12em;
            display: inline-block;
        }
    </style>

</head>

<body>
<div id="container">

    <div class="select">
        <label for="videoSource"> Choose webcam here: </label><select id="videoSource"></select>
    </div>

    <video id="video" playsinline autoplay></video>

    <p>

    <div class="" hidden>
        <label for="">  </label> <select id="audioSource"></select>
    </div>

    <div class="" hidden>
        <label for="">  </label><select id="audioOutput"></select>
    </div>

</div>

<script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>
<script src="js/main.js" async></script>

<script src="../../../js/lib/ga.js"></script>
</body>
</html>

## main.js
'use strict';

const videoElement = document.querySelector('video');
const audioInputSelect = document.querySelector('select#audioSource');
const audioOutputSelect = document.querySelector('select#audioOutput');
const videoSelect = document.querySelector('select#videoSource');
const selectors = [videoSelect];

audioOutputSelect.disabled = !('sinkId' in HTMLMediaElement.prototype);

function gotDevices(deviceInfos) {
  // Handles being called several times to update labels. Preserve values.
  const values = selectors.map(select => select.value);
  selectors.forEach(select => {
    while (select.firstChild) {
      select.removeChild(select.firstChild);
    }
  });
  for (let i = 0; i !== deviceInfos.length; ++i) {
    const deviceInfo = deviceInfos[i];
    const option = document.createElement('option');
    option.value = deviceInfo.deviceId;
    if (deviceInfo.kind === 'audioinput') {
      option.text = deviceInfo.label || `microphone ${audioInputSelect.length + 1}`;
      //audioInputSelect.appendChild(option);
    } else if (deviceInfo.kind === 'audiooutput') {
      option.text = deviceInfo.label || `speaker ${audioOutputSelect.length + 1}`;
      //audioOutputSelect.appendChild(option);
    } else if (deviceInfo.kind === 'videoinput') {
      option.text = deviceInfo.label || `camera ${videoSelect.length + 1}`;
      videoSelect.appendChild(option);
    } else {
      console.log('Some other kind of source/device: ', deviceInfo);
    }
  }
  selectors.forEach((select, selectorIndex) => {
    if (Array.prototype.slice.call(select.childNodes).some(n => n.value === values[selectorIndex])) {
      select.value = values[selectorIndex];
    }
  });
}

navigator.mediaDevices.enumerateDevices().then(gotDevices).catch(handleError);

// Attach audio output device to video element using device/sink ID.
function attachSinkId(element, sinkId) {
  if (typeof element.sinkId !== 'undefined') {
    element.setSinkId(sinkId)
      .then(() => {
        console.log(`Success, audio output device attached: ${sinkId}`);
      })
      .catch(error => {
        let errorMessage = error;
        if (error.name === 'SecurityError') {
          errorMessage = `You need to use HTTPS for selecting audio output device: ${error}`;
        }
        console.error(errorMessage);
        // Jump back to first output device in the list as it's the default.
        audioOutputSelect.selectedIndex = 0;
      });
  } else {
    console.warn('Browser does not support output device selection.');
  }
}


function gotStream(stream) {
  window.stream = stream; // make stream available to console
  videoElement.srcObject = stream;
  // Refresh button list in case labels have become available
  return navigator.mediaDevices.enumerateDevices();
}

function handleError(error) {
  console.log('navigator.MediaDevices.getUserMedia error: ', error.message, error.name);
}

function start() {
  if (window.stream) {
    window.stream.getTracks().forEach(track => {
      track.stop();
    });
  }
  //const audioSource = audioInputSelect.value;
  const videoSource = videoSelect.value;
  const constraints = {
    video: {deviceId: videoSource ? {exact: videoSource} : undefined}
  };
  navigator.mediaDevices.getUserMedia(constraints).then(gotStream).then(gotDevices).catch(handleError);
}

audioInputSelect.onchange = start;
//audioOutputSelect.onchange = changeAudioDestination;

videoSelect.onchange = start;

start();
	<!DOCTYPE html>
	<html>
	<head>

	<meta charset="utf-8">
	<meta name="description" content="WebRTC code samples">
	<meta name="viewport" content="width=device-width, user-scalable=yes, initial-scale=1, maximum-scale=1">
	<meta itemprop="description" content="Client-side WebRTC code samples">
	<meta itemprop="image" content="../../../images/webrtc-icon-192x192.png">
	<meta itemprop="name" content="WebRTC code samples">
	<meta name="mobile-web-app-capable" content="yes">
	<meta id="theme-color" name="theme-color" content="#ffffff">

	<base target="_blank">

	<title>Select audio and video sources</title>

	<link rel="icon" sizes="192x192" href="../../../images/webrtc-icon-192x192.png">
	<link href="//fonts.googleapis.com/css?family=Roboto:300,400,500,700" rel="stylesheet" type="text/css">
	<link rel="stylesheet" href="../../../css/main.css">

	<style>
	div.select {
	display: inline-block;
	margin: 0 0 1em 0;
	}

	p.small {
	font-size: 0.7em;
	}

	label {
	width: 12em;
	display: inline-block;
	}
	</style>

	</head>

	<body>
	<div id="container">

	<div class="select">
	<label for="videoSource"> Choose webcam here: </label><select id="videoSource"></select>
	</div>

	<video id="video" playsinline autoplay></video>

	<p>

	<div class="" hidden>
	<label for=""> </label> <select id="audioSource"></select>
	</div>

	<div class="" hidden>
	<label for=""> </label><select id="audioOutput"></select>
	</div>

	</div>

	<script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>
	<script src="js/main.js" async></script>

	<script src="../../../js/lib/ga.js"></script>
	</body>
	</html>
	'use strict';

	const videoElement = document.querySelector('video');
	const audioInputSelect = document.querySelector('select#audioSource');
	const audioOutputSelect = document.querySelector('select#audioOutput');
	const videoSelect = document.querySelector('select#videoSource');
	const selectors = [videoSelect];

	audioOutputSelect.disabled = !('sinkId' in HTMLMediaElement.prototype);

	function gotDevices(deviceInfos) {
	// Handles being called several times to update labels. Preserve values.
	const values = selectors.map(select => select.value);
	selectors.forEach(select => {
	while (select.firstChild) {
	select.removeChild(select.firstChild);
	}
	});
	for (let i = 0; i !== deviceInfos.length; ++i) {
	const deviceInfo = deviceInfos[i];
	const option = document.createElement('option');
	option.value = deviceInfo.deviceId;
	if (deviceInfo.kind === 'audioinput') {
	option.text = deviceInfo.label \|\| `microphone ${audioInputSelect.length + 1}`;
	//audioInputSelect.appendChild(option);
	} else if (deviceInfo.kind === 'audiooutput') {
	option.text = deviceInfo.label \|\| `speaker ${audioOutputSelect.length + 1}`;
	//audioOutputSelect.appendChild(option);
	} else if (deviceInfo.kind === 'videoinput') {
	option.text = deviceInfo.label \|\| `camera ${videoSelect.length + 1}`;
	videoSelect.appendChild(option);
	} else {
	console.log('Some other kind of source/device: ', deviceInfo);
	}
	}
	selectors.forEach((select, selectorIndex) => {
	if (Array.prototype.slice.call(select.childNodes).some(n => n.value === values[selectorIndex])) {
	select.value = values[selectorIndex];
	}
	});
	}

	navigator.mediaDevices.enumerateDevices().then(gotDevices).catch(handleError);

	// Attach audio output device to video element using device/sink ID.
	function attachSinkId(element, sinkId) {
	if (typeof element.sinkId !== 'undefined') {
	element.setSinkId(sinkId)
	.then(() => {
	console.log(`Success, audio output device attached: ${sinkId}`);
	})
	.catch(error => {
	let errorMessage = error;
	if (error.name === 'SecurityError') {
	errorMessage = `You need to use HTTPS for selecting audio output device: ${error}`;
	}
	console.error(errorMessage);
	// Jump back to first output device in the list as it's the default.
	audioOutputSelect.selectedIndex = 0;
	});
	} else {
	console.warn('Browser does not support output device selection.');
	}
	}


	function gotStream(stream) {
	window.stream = stream; // make stream available to console
	videoElement.srcObject = stream;
	// Refresh button list in case labels have become available
	return navigator.mediaDevices.enumerateDevices();
	}

	function handleError(error) {
	console.log('navigator.MediaDevices.getUserMedia error: ', error.message, error.name);
	}

	function start() {
	if (window.stream) {
	window.stream.getTracks().forEach(track => {
	track.stop();
	});
	}
	//const audioSource = audioInputSelect.value;
	const videoSource = videoSelect.value;
	const constraints = {
	video: {deviceId: videoSource ? {exact: videoSource} : undefined}
	};
	navigator.mediaDevices.getUserMedia(constraints).then(gotStream).then(gotDevices).catch(handleError);
	}

	audioInputSelect.onchange = start;
	//audioOutputSelect.onchange = changeAudioDestination;

	videoSelect.onchange = start;

	start();