User Media Plug in needs to support camera FLASH, or TORCH

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  • The User Media Plug in needs to support Camera FLASHLIGHT, or TORCH functions.

    There are many situations where poor lighting requires a camera FLASH to take a

    decent picture.

    TORCH ON

    TORCH OFF

    TORCH FLASH

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  • The following code works to turn ON the camera FLASHLIGHT, if this helps.

    ==================================================================================

    	<html>
		<body>
//Test browser support
const SUPPORTS_MEDIA_DEVICES = 'mediaDevices' in navigator;

if (SUPPORTS_MEDIA_DEVICES) {
 //Get the environment camera (usually the second one)
 navigator.mediaDevices.enumerateDevices().then(devices => {
 
 const cameras = devices.filter((device) => device.kind === 'videoinput');

 if (cameras.length === 0) {
 throw 'No camera found on this device.';
 }
 const camera = cameras[cameras.length - 1];

 // Create stream and get video track
 navigator.mediaDevices.getUserMedia({
 video: {
 deviceId: camera.deviceId,
 facingMode: ['user', 'environment'],
 height: {ideal: 1080},
 width: {ideal: 1920}
 }
 }).then(stream => {
 const track = stream.getVideoTracks()[0];

 //Create image capture object and get camera capabilities
 const imageCapture = new ImageCapture(track)
 const photoCapabilities = imageCapture.getPhotoCapabilities().then(() => {

 //todo: check if camera has a torch

 //let there be light!
 const btn = document.querySelector('.switch');
 btn.addEventListener('click', function(){
 track.applyConstraints({
 advanced: [{torch: true}]
 });
 });
 });
 });
 });
 
 //The light will be on as long the track exists
 
 
}
<button class="switch">On / Off</button>
		</body>
	</html>
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