How to check web-camera and microphone existence?

[tagaism]

Hello every one.
I created a WebRTC application where users can have privet video chat.

But, if one of the user doesn't have a web-camera, then getUserMedia doesn't allow him to get connection.

I want make a user, who haven't a cam could make at least a voice chat. 

So, I suppose that I need to make checking of camera existence before getUserMedia occur.

Please, can anyone guide me? Any help will extremely appreciated.  

[Christoffer Jansson]

Hi,

You could do enumerateDevices and check if there are any devices of kind "videoinput" and then do getUserMedia with the appropriate device types.

Checkout this demo: https://github.com/webrtc/samples/blob/gh-pages/src/content/devices/input-output/js/main.js#L17

/Chris

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[tagaism]

Thanks @Chrisoffer Jannson.

Your answer guided me to the solution.

navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;

if (navigator.getUserMedia) {

navigator.getUserMedia({video: true, audio: true}, function(){

// Success

// check if mic is provided

navigator.mediaDevices.enumerateDevices().then(function(devices) {

devices.forEach(function(device) {

//if mic is plugged in

if (((device.kind === 'audioinput') && (device.kind === 'videoinput')) || device.kind === 'audioinput') {

//check if mic has permission

//works only in Chrome

if ((device.label).length > 0) {

//go to chat room

};

};

});

}).catch(function(err) {

console.log(err.name + ": " + error.message);

});

},

function(){

// Failure

});

};

[Christoffer Jansson]

Glad I was able to help ;)

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/Chris