build 9, attempt to fix #32

Test implementation.

Explicitly select the device that you want to playback (not the auto "default device" selection). Check if device will continue to stick to your selected device, even in circumstances such as EQ / virtual device.

App device selection menu may glitch out showing 2 checkmarks on app restart, but that is expected, cosmetic behaviour.

Quality.xcodeproj/project.pbxproj

@@ -338,7 +338,7 @@
 				CODE_SIGN_ENTITLEMENTS = Quality/Quality.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 8;
+				CURRENT_PROJECT_VERSION = 9;
 				DEVELOPMENT_ASSET_PATHS = "\"Quality/Preview Content\"";
 				DEVELOPMENT_TEAM = 3X69W4AQD6;
 				ENABLE_HARDENED_RUNTIME = YES;
@@ -372,7 +372,7 @@
 				CODE_SIGN_ENTITLEMENTS = Quality/Quality.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 8;
+				CURRENT_PROJECT_VERSION = 9;
 				DEVELOPMENT_ASSET_PATHS = "\"Quality/Preview Content\"";
 				DEVELOPMENT_TEAM = 3X69W4AQD6;
 				ENABLE_HARDENED_RUNTIME = YES;

Quality/AppDelegate.swift

@@ -116,10 +116,16 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 
         var idx = 0
         for device in outputDevices.outputDevices {
+            let uid = device.uid
             let name = device.name
             let item = DeviceMenuItem(title: name, action: #selector(deviceSelection(_:)), keyEquivalent: "", device: device)
             item.tag = idx
-            item.state = .off
+            if let uid, uid == Defaults.shared.selectedDeviceUID {
+                item.state = .on
+            }
+            else {
+                item.state = .off
+            }
             idx += 1
             self.devicesMenu.addItem(item)
         }
@@ -129,6 +135,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         self.devicesMenu.items.forEach({$0.state = .off})
         sender.state = .on
         outputDevices.selectedOutputDevice = sender.device
+        Defaults.shared.selectedDeviceUID = sender.device?.uid
     }
 
     func statusItemDisplay() {

Quality/Defaults.swift

@@ -10,6 +10,7 @@ import Foundation
 class Defaults {
     static let shared = Defaults()
     private let kUserPreferIconStatusBarItem = "com.vincent-neo.LosslessSwitcher-Key-UserPreferIconStatusBarItem"
+    private let kSelectedDeviceUID = "com.vincent-neo.LosslessSwitcher-Key-SelectedDeviceUID"
 
     private init() {
         UserDefaults.standard.register(defaults: [kUserPreferIconStatusBarItem : true])
@@ -24,6 +25,15 @@ class Defaults {
         }
     }
 
+    var selectedDeviceUID: String? {
+        get {
+            return UserDefaults.standard.string(forKey: kSelectedDeviceUID)
+        }
+        set {
+            UserDefaults.standard.set(newValue, forKey: kSelectedDeviceUID)
+        }
+    }
+
     var statusBarItemTitle: String {
         let title = self.userPreferIconStatusBarItem ? "Show Sample Rate" : "Show Icon"
         return title