fixed Driver device event when sampling rates changes

Author: nodeful

native/app/Source/Application.swift

@@ -110,9 +110,9 @@ class Application {
   private static func installDriver (_ completion: @escaping() -> Void) {
     if !Driver.isInstalled || Driver.isOutdated {
       Alert.confirm(
-      title: "Audio Driver Installation",
-      message: "eqMac needs to install an Audio Driver. \nIn order to do that we will ask for your System Password. \nPlease close any apps playing audio (Spotify, YouTube etc.) otherwise installation might fail.",
-      cancelText: "Quit eqMac"
+        title: "Audio Driver Installation",
+        message: "eqMac needs to install an Audio Driver. \nIn order to do that we will ask for your System Password. \nPlease close any apps playing audio (Spotify, YouTube etc.) otherwise installation might fail.",
+        cancelText: "Quit eqMac"
       ) { install in
         if install {
           Driver.install(started: {
@@ -201,33 +201,14 @@ class Application {
   }
 
   static var ignoreNextVolumeEvent = false
-
+  
   private static func setupDeviceEvents () {
     AudioDeviceEvents.on(.outputChanged) { device in
       if device.isHardware {
         Console.log("outputChanged: ", device, " starting PlayThrough")
         startPassthrough()
       }
     }
-    AudioDeviceEvents.on(.volumeChanged, onDevice: Driver.device!) {
-      if ignoreNextVolumeEvent {
-        ignoreNextVolumeEvent = false
-        return
-      }
-      if (overrideNextVolumeEvent) {
-        overrideNextVolumeEvent = false
-        ignoreNextVolumeEvent = true
-        Driver.device!.setVirtualMasterVolume(1, direction: .playback)
-        return
-      }
-      let gain = Double(Driver.device!.virtualMasterVolume(direction: .playback)!)
-      if (gain <= 1 && gain != Application.store.state.effects.volume.gain) {
-        Application.dispatchAction(VolumeAction.setGain(gain, false))
-      }
-    }
-    AudioDeviceEvents.on(.muteChanged, onDevice: Driver.device!) {
-      Application.dispatchAction(VolumeAction.setMuted(Driver.device!.mute))
-    }
 
     AudioDeviceEvents.onDeviceListChanged { list in
       Console.log("listChanged", list)
@@ -252,6 +233,30 @@ class Application {
         selectOutput(device: device)
       }
     }
+    
+    setupDriverDeviceEvents()
+  }
+  
+  private static func setupDriverDeviceEvents () {
+    AudioDeviceEvents.on(.volumeChanged, onDevice: Driver.device!) {
+      if ignoreNextVolumeEvent {
+        ignoreNextVolumeEvent = false
+        return
+      }
+      if (overrideNextVolumeEvent) {
+        overrideNextVolumeEvent = false
+        ignoreNextVolumeEvent = true
+        Driver.device!.setVirtualMasterVolume(1, direction: .playback)
+        return
+      }
+      let gain = Double(Driver.device!.virtualMasterVolume(direction: .playback)!)
+      if (gain <= 1 && gain != Application.store.state.effects.volume.gain) {
+        Application.dispatchAction(VolumeAction.setGain(gain, false))
+      }
+    }
+    AudioDeviceEvents.on(.muteChanged, onDevice: Driver.device!) {
+      Application.dispatchAction(VolumeAction.setMuted(Driver.device!.mute))
+    }
   }
 
   static func selectOutput (device: AudioDevice) {
@@ -331,10 +336,11 @@ class Application {
       ) {
         //        selectOutput(device: selectedDevice)
         Utilities.delay(100) {
-            // need a delay, because emitter should finish it's work at first
-            try! AudioDeviceEvents.recreateEventEmitters([.isAliveChanged, .volumeChanged, .nominalSampleRateChanged])
-            stopEngines()
-            createAudioPipeline()
+          // need a delay, because emitter should finish it's work at first
+          try! AudioDeviceEvents.recreateEventEmitters([.isAliveChanged, .volumeChanged, .nominalSampleRateChanged])
+          self.setupDriverDeviceEvents()
+          stopEngines()
+          createAudioPipeline()
         }
       }
 
@@ -405,7 +411,7 @@ class Application {
       Application.dispatchAction(VolumeAction.setGain(newGain, false))
     }
   }
-    
+  
   private static func killEngine () {
     engine = nil
   }