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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>
'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();
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