refresh video inputs if no device id

basst314 · Nov 30, 2020 · ca16297 · ca16297
1 parent 94ef5a7
commit ca16297
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/app/modules/webcam/util/webcam.util.ts b/src/app/modules/webcam/util/webcam.util.ts
@@ -2,6 +2,11 @@ export class WebcamUtil {
 
   private static availableVideoInputs: MediaDeviceInfo[] = [];
 
+  static hasVideoInputs() {
+    const inputs = WebcamUtil.availableVideoInputs;
+    return !!inputs.find(input => !!input.deviceId);
+  }
+
   /**
    * Lists available videoInput devices
    * @returns a list of media device info.
@@ -11,7 +16,7 @@ export class WebcamUtil {
       throw new Error('enumerateDevices() not supported.');
     }
 
-    if (!WebcamUtil.availableVideoInputs.length) {
+    if (!this.hasVideoInputs()) {
       const devices = await navigator.mediaDevices.enumerateDevices();
       WebcamUtil.availableVideoInputs = devices.filter((device: MediaDeviceInfo) => device.kind === 'videoinput');
     }