No more once_cell

Fix system audio check that didn't work because the API returns ()

src/device_notification_client.rs

@@ -11,12 +11,6 @@ pub(crate) struct DeviceNotificationClient {
     pub(crate) callback: Box<dyn Fn(&windows::core::PCWSTR)>
 }
 
-impl Drop for DeviceNotificationClient {
-    fn drop(&mut self) {
-        println!("DNC drop");
-    }
-}
-
 impl IMMNotificationClient_Impl for DeviceNotificationClient {
     fn OnDeviceStateChanged(
         &self,
@@ -32,8 +26,6 @@ impl IMMNotificationClient_Impl for DeviceNotificationClient {
     }
 
     fn OnDeviceRemoved(&self, _pwstrdeviceid: &windows::core::PCWSTR) -> windows::core::Result<()> {
-        println!("OnDeviceRemoved");
-        // TODO: Remove device and all its sessions
         Ok(())
     }
 

src/main.rs

@@ -12,7 +12,11 @@ use std::{
     io::{BufRead, BufReader},
     path::Path,
     ptr::null_mut,
-    sync::{Arc, Mutex, mpsc::{self, Sender, Receiver}}, thread,
+    sync::{
+        mpsc::{self, Receiver, Sender},
+        Arc, Mutex,
+    },
+    thread,
 };
 
 use sm_session_notifier::SMSessionNotifier;
@@ -51,11 +55,6 @@ impl SessionMuter {
         self: &mut SessionMuter,
         session: IAudioSessionControl2,
     ) -> Result<(), Box<dyn Error>> {
-        unsafe {
-            if session.IsSystemSoundsSession().is_ok() {
-                return Ok(());
-            }
-        }
         match self.session_to_filename(&session) {
             Ok(file_name) => {
                 let fn_str = file_name.to_string_lossy().to_string();
@@ -68,9 +67,7 @@ impl SessionMuter {
                     self.sessions.push(session);
                 }
             }
-            Err(err) => {
-                println!("Unable to get filename for session {:?}", err);
-            }
+            Err(_) => {}
         }
         Ok(())
     }
@@ -136,7 +133,7 @@ fn main() {
         .boot_devices()
         .expect("failed to get initial audio devices and sessions");
 
-    let (tx, rx) : (Sender<String>, Receiver<String>) = mpsc::channel();
+    let (tx, rx): (Sender<String>, Receiver<String>) = mpsc::channel();
     *WIN_CHANGE_CHANNEL_TX.lock().unwrap().borrow_mut() = Some(tx);
 
     thread::spawn(move || {
@@ -147,5 +144,4 @@ fn main() {
         let path = rx.recv().unwrap();
         muter.lock().unwrap().notify_window_changed(&path);
     }
-
 }

src/session_notification.rs

@@ -23,9 +23,3 @@ impl IAudioSessionNotification_Impl for SessionNotification {
         Ok(())
     }
 }
-
-impl Drop for SessionNotification {
-    fn drop(&mut self) {
-        println!("SN drop");
-    }
-}

src/window_change.rs

@@ -1,9 +1,9 @@
 use std::{
     cell::RefCell,
-    sync::{mpsc::Sender, Arc, Mutex},
+    sync::{mpsc::Sender, Mutex},
 };
 
-use once_cell::sync::Lazy;
+
 use windows::Win32::{
     Foundation::{HINSTANCE, HWND},
     UI::{
@@ -18,8 +18,7 @@ use windows::Win32::{
 
 use crate::pid_to_exe::pid_to_exe_path;
 
-pub static WIN_CHANGE_CHANNEL_TX: Lazy<Arc<Mutex<RefCell<Option<Sender<String>>>>>> =
-    Lazy::new(|| Arc::new(Mutex::new(RefCell::new(None))));
+pub static WIN_CHANGE_CHANNEL_TX: Mutex<RefCell<Option<Sender<String>>>> = Mutex::new(RefCell::new(None));
 
 unsafe extern "system" fn win_event_proc(
     _hook: HWINEVENTHOOK,