neuecc
Detect webcam connect/disconnect
Hello, I am trying to get started with UniRx. My use case is trying to detect a webcam being connected/disconnected from my PC.
For the moment, I am looking at the number of devices connected in WebCamTexture.devices.
ReactiveCollection<WebCamTexture> myCollection;
myCollection = new ReactiveCollection<WebCamTexture>();
WebCamTexture.devices.ToReactiveCollection();
myCollection.ObserveCountChanged().Subscribe(_ => Debug.Log("count changed"));
which doesn't seem to trigger at all. Any pointers on how to do that would be much appreciated. thank you
ToReactiveCollection() makes a copy of the data, it is not continually updating that list of devices. There's no hook between the devices and your collection to signal any update is needed.
I don't see any kind of event that Unity fires when that value changes so I'd probably check it on an interval.
// Checks the devices every 5 seconds
var currentCount = WebCamTexture.devices.Length;
Observable.Interval(TimeSpan.FromSeconds(5))
.Select(_ => WebCamTexture.devices)
.Where(devices => devices.Length != currentCount)
.Subscribe(devices => {
currentCount = devices.Length;
Debug.Log("count changed");
});
