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Add camera selector. #1677

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merged 2 commits into from
Sep 5, 2024
Merged

Add camera selector. #1677

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c65f778
Add camera selector.
handellm Sep 4, 2024
ae937a2
fix
handellm Sep 4, 2024
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4 changes: 3 additions & 1 deletion src/content/getusermedia/resolution/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -79,7 +79,9 @@ <h1><a href="//webrtc.github.io/samples/" title="WebRTC samples homepage">WebRTC
title="W3C getusermedia specification - constraints section">constraints</a>.</p>

<p>Click a button to call <code>getUserMedia()</code> with appropriate resolution.</p>

<div class="select">
<label for="videoSource">Video source: </label><select id="videoSource"></select>
</div>
<div id="buttons">
<button id="p180">180p (320x180)</button>
<button id="qvga">QVGA (320x240)</button>
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26 changes: 26 additions & 0 deletions src/content/getusermedia/resolution/js/main.js
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Expand Up @@ -31,6 +31,8 @@ const aspectLock = document.querySelector('#aspectlock');
const sizeLock = document.querySelector('#sizelock');
const pauseVideo = document.querySelector('#pausevideo');

const videoSelect = document.querySelector('select#videoSource');

let currentWidth = 0;
let currentHeight = 0;

Expand Down Expand Up @@ -114,6 +116,28 @@ const eightKConstraints = {
video: {width: {exact: 7680}, height: {exact: 4320}}
};

function gotDevices(deviceInfos) {
// Handles being called several times to update labels. Preserve values.
while (videoSelect.firstChild) {
videoSelect.removeChild(videoSelect.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 === 'videoinput') {
option.text = deviceInfo.label || `camera ${videoSelect.length + 1}`;
videoSelect.appendChild(option);
}
}
}

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

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

function gotStream(mediaStream) {
stream = window.stream = mediaStream; // stream available to console
video.srcObject = mediaStream;
Expand Down Expand Up @@ -212,6 +236,8 @@ function getMedia(constraints) {

clearErrorMessage();
videoblock.style.display = 'none';
constraints.video.deviceId = {exact: videoSelect.value};
console.log('getUserMedia constraints: ' + JSON.stringify(constraints));
navigator.mediaDevices.getUserMedia(constraints)
.then(gotStream)
.catch(e => {
Expand Down