utils class for input device monitoring

src/back/utils.ts

@@ -0,0 +1,49 @@
+import cp from 'child_process'
+
+import Settings from './settings'
+
+export async function isCameraActive(): Promise<boolean> {
+  if (process.platform === 'darwin') {
+    return new Promise((resolve) => {
+      // Check number of processes using the camera
+      cp.exec(`lsof -n | grep "AppleCamera"`, (_, out) => {
+        const processesUsingCamera = out.trim().split('\n').length
+        resolve(processesUsingCamera > 1) // One is the apple daemon that is always active
+      })
+    })
+  }
+  return false
+}
+
+export async function isMicrophoneActive(): Promise<boolean> {
+  if (process.platform === 'darwin') {
+    return new Promise((resolve) => {
+      cp.exec(`ioreg -c AppleHDAEngineInput | grep IOAudioEngineState`, (_, out) => {
+        const parsed = parseInt(out.trim().replace(/[^\d]/gim, ''))
+        resolve(parsed > 0)
+      })
+    })
+  }
+  return false
+}
+
+export class InputDevicesStatus {
+  static status = {
+    mic: false,
+    camera: false,
+  }
+
+  static init() {
+    setInterval(() => {
+      isMicrophoneActive().then((result) => (this.status.mic = result))
+      isCameraActive().then((result) => (this.status.camera = result))
+    }, 2000)
+  }
+
+  static areCameraOrMicrophoneActive(): boolean {
+    if (Settings.load('skipOnCameraOrMic')) {
+      return this.status.mic || this.status.camera
+    }
+    return false
+  }
+}