style(host/windows): rustfmt the Windows backends

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/punktfunk-host/src/audio.rs

@@ -39,7 +39,8 @@ pub fn open_audio_capture(channels: u32) -> Result<Box<dyn AudioCapturer>> {
 
 #[cfg(target_os = "windows")]
 pub fn open_audio_capture(channels: u32) -> Result<Box<dyn AudioCapturer>> {
-    wasapi_cap::WasapiLoopbackCapturer::open(channels).map(|c| Box::new(c) as Box<dyn AudioCapturer>)
+    wasapi_cap::WasapiLoopbackCapturer::open(channels)
+        .map(|c| Box::new(c) as Box<dyn AudioCapturer>)
 }
 
 #[cfg(not(any(target_os = "linux", target_os = "windows")))]

crates/punktfunk-host/src/audio/wasapi_cap.rs

@@ -46,7 +46,9 @@ impl WasapiLoopbackCapturer {
             .context("spawn wasapi audio thread")?;
         match ready_rx.recv_timeout(Duration::from_secs(3)) {
             Ok(Ok(())) => {
-                tracing::info!("WASAPI loopback capture: 48 kHz stereo f32 (default render endpoint)");
+                tracing::info!(
+                    "WASAPI loopback capture: 48 kHz stereo f32 (default render endpoint)"
+                );
                 Ok(WasapiLoopbackCapturer {
                     chunks: rx,
                     channels,
@@ -93,7 +95,10 @@ fn capture_thread(
     ready: SyncSender<Result<()>>,
 ) -> Result<()> {
     // COM must be initialized on THIS thread (MTA), before any device call.
-    if let Err(e) = wasapi::initialize_mta().ok().context("CoInitializeEx (MTA)") {
+    if let Err(e) = wasapi::initialize_mta()
+        .ok()
+        .context("CoInitializeEx (MTA)")
+    {
         let _ = ready.send(Err(e));
         return Ok(());
     }
@@ -122,7 +127,9 @@ fn capture_thread(
         let capture_client = audio_client
             .get_audiocaptureclient()
             .context("IAudioCaptureClient")?;
-        audio_client.start_stream().context("start loopback stream")?;
+        audio_client
+            .start_stream()
+            .context("start loopback stream")?;
         let _ = ready.send(Ok(()));
 
         let mut bytes: VecDeque<u8> = VecDeque::new();
@@ -182,7 +189,10 @@ mod tests {
         };
         assert_eq!(cap.channels(), 2);
         match cap.next_chunk() {
-            Ok(samples) => assert!(samples.len() % 2 == 0, "interleaved stereo => even sample count"),
+            Ok(samples) => assert!(
+                samples.len() % 2 == 0,
+                "interleaved stereo => even sample count"
+            ),
             Err(e) => eprintln!("no audio within timeout (silent system?): {e:#}"),
         }
     }

crates/punktfunk-host/src/capture.rs

@@ -257,7 +257,9 @@ pub fn capture_virtual_output(vout: crate::vdisplay::VirtualOutput) -> Result<Bo
 #[cfg(target_os = "windows")]
 pub fn capture_virtual_output(vout: crate::vdisplay::VirtualOutput) -> Result<Box<dyn Capturer>> {
     let target = vout.win_capture.clone().ok_or_else(|| {
-        anyhow::anyhow!("SudoVDA target not yet an active display (needs a WDDM GPU to activate it)")
+        anyhow::anyhow!(
+            "SudoVDA target not yet an active display (needs a WDDM GPU to activate it)"
+        )
     })?;
     dxgi::DuplCapturer::open(target, vout.preferred_mode, vout.keepalive)
         .map(|c| Box::new(c) as Box<dyn Capturer>)
@@ -268,7 +270,7 @@ pub fn capture_virtual_output(_vout: crate::vdisplay::VirtualOutput) -> Result<B
     anyhow::bail!("virtual-output capture requires Linux or Windows")
 }
 
-#[cfg(target_os = "linux")]
-mod linux;
 #[cfg(target_os = "windows")]
 pub mod dxgi;
+#[cfg(target_os = "linux")]
+mod linux;

crates/punktfunk-host/src/capture/dxgi.rs

@@ -139,8 +139,8 @@ impl DuplCapturer {
                 }
                 j += 1;
             }
-            let output = out1
-                .with_context(|| format!("adapter has no output named {}", target.gdi_name))?;
+            let output =
+                out1.with_context(|| format!("adapter has no output named {}", target.gdi_name))?;
             // 4) duplicate the output.
             let dupl = output
                 .DuplicateOutput(&device)
@@ -171,7 +171,11 @@ impl DuplCapturer {
                 height,
                 refresh_hz,
                 target.gdi_name,
-                if gpu_mode { "D3D11 zero-copy" } else { "CPU staging" }
+                if gpu_mode {
+                    "D3D11 zero-copy"
+                } else {
+                    "CPU staging"
+                }
             );
             Ok(Self {
                 device,
@@ -268,7 +272,10 @@ impl DuplCapturer {
         }
         let mut info = DXGI_OUTDUPL_FRAME_INFO::default();
         let mut res: Option<IDXGIResource> = None;
-        match self.dupl.AcquireNextFrame(self.timeout_ms, &mut info, &mut res) {
+        match self
+            .dupl
+            .AcquireNextFrame(self.timeout_ms, &mut info, &mut res)
+        {
             Ok(()) => {}
             Err(e) if e.code() == DXGI_ERROR_WAIT_TIMEOUT => return Ok(None),
             Err(e) if e.code() == DXGI_ERROR_ACCESS_LOST => {

crates/punktfunk-host/src/encode.rs

@@ -185,8 +185,13 @@ pub fn open_video(
         );
         // Software H.264 realistically caps far below the negotiated hardware rates.
         const SW_BITRATE_CEIL: u64 = 100_000_000;
-        let enc =
-            sw::OpenH264Encoder::open(format, width, height, fps, bitrate_bps.min(SW_BITRATE_CEIL))?;
+        let enc = sw::OpenH264Encoder::open(
+            format,
+            width,
+            height,
+            fps,
+            bitrate_bps.min(SW_BITRATE_CEIL),
+        )?;
         Ok(Box::new(enc) as Box<dyn Encoder>)
     }
     #[cfg(not(any(target_os = "linux", target_os = "windows")))]
@@ -198,10 +203,10 @@ pub fn open_video(
 
 #[cfg(target_os = "linux")]
 mod linux;
-#[cfg(target_os = "windows")]
-mod sw;
 #[cfg(all(target_os = "windows", feature = "nvenc"))]
 mod nvenc;
+#[cfg(target_os = "windows")]
+mod sw;
 
 #[cfg(test)]
 mod tests {

crates/punktfunk-host/src/encode/nvenc.rs

@@ -18,8 +18,8 @@ use std::ffi::c_void;
 use std::ptr;
 use windows::core::Interface;
 use windows::Win32::Graphics::Direct3D11::{
-    ID3D11Device, ID3D11DeviceContext, ID3D11Texture2D, D3D11_BIND_RENDER_TARGET, D3D11_TEXTURE2D_DESC,
-    D3D11_USAGE_DEFAULT,
+    ID3D11Device, ID3D11DeviceContext, ID3D11Texture2D, D3D11_BIND_RENDER_TARGET,
+    D3D11_TEXTURE2D_DESC, D3D11_USAGE_DEFAULT,
 };
 use windows::Win32::Graphics::Dxgi::Common::{DXGI_FORMAT_B8G8R8A8_UNORM, DXGI_SAMPLE_DESC};
 
@@ -94,7 +94,11 @@ impl NvencD3d11Encoder {
     /// Lazily create the session on the first frame's D3D11 device (so capture + encode share it).
     fn init_session(&mut self, device: &ID3D11Device) -> Result<()> {
         unsafe {
-            self.ctx = Some(device.GetImmediateContext().context("D3D11 immediate context")?);
+            self.ctx = Some(
+                device
+                    .GetImmediateContext()
+                    .context("D3D11 immediate context")?,
+            );
 
             // 1. open the session bound to the D3D11 device.
             let mut params = nv::NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS {

crates/punktfunk-host/src/encode/sw.rs

@@ -132,10 +132,12 @@ impl Encoder for OpenH264Encoder {
         );
 
         match self.src_format {
-            PixelFormat::Rgb => self.yuv.read_rgb(RgbSliceU8::new(&bytes[..w * h * 3], (w, h))),
-            PixelFormat::Bgra | PixelFormat::Bgrx => {
-                self.yuv.read_rgb(BgraSliceU8::new(&bytes[..w * h * 4], (w, h)))
-            }
+            PixelFormat::Rgb => self
+                .yuv
+                .read_rgb(RgbSliceU8::new(&bytes[..w * h * 3], (w, h))),
+            PixelFormat::Bgra | PixelFormat::Bgrx => self
+                .yuv
+                .read_rgb(BgraSliceU8::new(&bytes[..w * h * 4], (w, h))),
             PixelFormat::Rgba | PixelFormat::Rgbx => {
                 self.normalize_to_bgra(bytes, 4, true);
                 self.yuv.read_rgb(BgraSliceU8::new(&self.scratch, (w, h)));

crates/punktfunk-host/src/inject.rs

@@ -317,7 +317,7 @@ pub mod gamepad {
 }
 #[cfg(target_os = "linux")]
 mod libei;
-#[cfg(target_os = "linux")]
-mod wlr;
 #[cfg(target_os = "windows")]
 mod sendinput;
+#[cfg(target_os = "linux")]
+mod wlr;

crates/punktfunk-host/src/inject/sendinput.rs

@@ -13,11 +13,11 @@ use windows::Win32::System::StationsAndDesktops::{
 };
 use windows::Win32::UI::Input::KeyboardAndMouse::{
     MapVirtualKeyExW, SendInput, INPUT, INPUT_0, INPUT_KEYBOARD, INPUT_MOUSE, KEYBDINPUT,
-    KEYEVENTF_EXTENDEDKEY, KEYEVENTF_KEYUP, KEYEVENTF_SCANCODE, MAPVK_VK_TO_VSC_EX, MOUSEEVENTF_ABSOLUTE,
-    MOUSEEVENTF_HWHEEL, MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_LEFTUP, MOUSEEVENTF_MIDDLEDOWN,
-    MOUSEEVENTF_MIDDLEUP, MOUSEEVENTF_MOVE, MOUSEEVENTF_RIGHTDOWN, MOUSEEVENTF_RIGHTUP,
-    MOUSEEVENTF_VIRTUALDESK, MOUSEEVENTF_WHEEL, MOUSEEVENTF_XDOWN, MOUSEEVENTF_XUP, MOUSEINPUT,
-    VIRTUAL_KEY,
+    KEYEVENTF_EXTENDEDKEY, KEYEVENTF_KEYUP, KEYEVENTF_SCANCODE, MAPVK_VK_TO_VSC_EX,
+    MOUSEEVENTF_ABSOLUTE, MOUSEEVENTF_HWHEEL, MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_LEFTUP,
+    MOUSEEVENTF_MIDDLEDOWN, MOUSEEVENTF_MIDDLEUP, MOUSEEVENTF_MOVE, MOUSEEVENTF_RIGHTDOWN,
+    MOUSEEVENTF_RIGHTUP, MOUSEEVENTF_VIRTUALDESK, MOUSEEVENTF_WHEEL, MOUSEEVENTF_XDOWN,
+    MOUSEEVENTF_XUP, MOUSEINPUT, VIRTUAL_KEY,
 };
 use windows::Win32::UI::WindowsAndMessaging::{
     GetSystemMetrics, SM_CXVIRTUALSCREEN, SM_CYVIRTUALSCREEN, SM_XVIRTUALSCREEN, SM_YVIRTUALSCREEN,
@@ -73,7 +73,10 @@ impl SendInputInjector {
         if n as usize != inputs.len() {
             // 0 = blocked (different/secure desktop). Surface as Err so the host service drops +
             // reopens the injector (which reattaches the input desktop).
-            anyhow::bail!("SendInput injected {n}/{} events (blocked desktop?)", inputs.len());
+            anyhow::bail!(
+                "SendInput injected {n}/{} events (blocked desktop?)",
+                inputs.len()
+            );
         }
         Ok(())
     }
@@ -130,11 +133,46 @@ impl InputInjector for SendInputInjector {
             InputKind::MouseButtonDown | InputKind::MouseButtonUp => {
                 let down = event.kind == InputKind::MouseButtonDown;
                 let (flag, data) = match event.code {
-                    1 => (if down { MOUSEEVENTF_LEFTDOWN } else { MOUSEEVENTF_LEFTUP }, 0u32),
-                    2 => (if down { MOUSEEVENTF_MIDDLEDOWN } else { MOUSEEVENTF_MIDDLEUP }, 0),
-                    3 => (if down { MOUSEEVENTF_RIGHTDOWN } else { MOUSEEVENTF_RIGHTUP }, 0),
-                    4 => (if down { MOUSEEVENTF_XDOWN } else { MOUSEEVENTF_XUP }, XBUTTON1),
-                    5 => (if down { MOUSEEVENTF_XDOWN } else { MOUSEEVENTF_XUP }, XBUTTON2),
+                    1 => (
+                        if down {
+                            MOUSEEVENTF_LEFTDOWN
+                        } else {
+                            MOUSEEVENTF_LEFTUP
+                        },
+                        0u32,
+                    ),
+                    2 => (
+                        if down {
+                            MOUSEEVENTF_MIDDLEDOWN
+                        } else {
+                            MOUSEEVENTF_MIDDLEUP
+                        },
+                        0,
+                    ),
+                    3 => (
+                        if down {
+                            MOUSEEVENTF_RIGHTDOWN
+                        } else {
+                            MOUSEEVENTF_RIGHTUP
+                        },
+                        0,
+                    ),
+                    4 => (
+                        if down {
+                            MOUSEEVENTF_XDOWN
+                        } else {
+                            MOUSEEVENTF_XUP
+                        },
+                        XBUTTON1,
+                    ),
+                    5 => (
+                        if down {
+                            MOUSEEVENTF_XDOWN
+                        } else {
+                            MOUSEEVENTF_XUP
+                        },
+                        XBUTTON2,
+                    ),
                     _ => return Ok(()),
                 };
                 let mi = MOUSEINPUT {
@@ -155,7 +193,11 @@ impl InputInjector for SendInputInjector {
                     dx: 0,
                     dy: 0,
                     mouseData: event.x as u32, // signed wheel delta reinterpreted as DWORD
-                    dwFlags: if horizontal { MOUSEEVENTF_HWHEEL } else { MOUSEEVENTF_WHEEL },
+                    dwFlags: if horizontal {
+                        MOUSEEVENTF_HWHEEL
+                    } else {
+                        MOUSEEVENTF_WHEEL
+                    },
                     time: 0,
                     dwExtraInfo: 0,
                 };
@@ -226,5 +268,8 @@ fn virtual_desktop_rect() -> (i32, i32, i32, i32) {
 // RCtrl (0xA3), RAlt (0xA5), Pause (0x90). MAPVK_VK_TO_VSC_EX already encodes E0 for most; this is a
 // thin safety net.
 fn forced_extended(vk: u16) -> bool {
-    matches!(vk, 0x21..=0x28 | 0x2D | 0x2E | 0x5B | 0x5C | 0x5D | 0xA3 | 0xA5 | 0x90)
+    matches!(
+        vk,
+        0x21..=0x28 | 0x2D | 0x2E | 0x5B | 0x5C | 0x5D | 0xA3 | 0xA5 | 0x90
+    )
 }

crates/punktfunk-host/src/m3.rs

@@ -1528,52 +1528,52 @@ fn resolve_compositor(pref: CompositorPref) -> Result<crate::vdisplay::Composito
     }
     #[cfg(not(target_os = "windows"))]
     {
-    // Explicit operator override (legacy / CI / forcing a backend for a test) wins and is assumed
-    // to come with a hand-set env — don't retarget the process env in that case.
-    let overridden = std::env::var_os("PUNKTFUNK_COMPOSITOR").is_some();
-    let detected = if overridden {
-        crate::vdisplay::detect().ok()
-    } else {
-        // Auto: detect the LIVE session (Gaming vs Desktop) and retarget the process env at it so
-        // every backend (video capture + input) this connect opens against the active session —
-        // this is the state machine that lets one host follow a Bazzite box across Gaming↔Desktop.
-        let active = crate::vdisplay::detect_active_session();
-        crate::vdisplay::apply_session_env(&active);
-        tracing::info!(
-            active = ?active.kind,
-            wayland = active.env.wayland_display.as_deref().unwrap_or("-"),
-            "detected active graphical session"
-        );
-        crate::vdisplay::compositor_for_kind(active.kind)
-    };
-    let available = crate::vdisplay::available();
-    let chosen = pick_compositor(pref, &available, detected).ok_or_else(|| {
+        // Explicit operator override (legacy / CI / forcing a backend for a test) wins and is assumed
+        // to come with a hand-set env — don't retarget the process env in that case.
+        let overridden = std::env::var_os("PUNKTFUNK_COMPOSITOR").is_some();
+        let detected = if overridden {
+            crate::vdisplay::detect().ok()
+        } else {
+            // Auto: detect the LIVE session (Gaming vs Desktop) and retarget the process env at it so
+            // every backend (video capture + input) this connect opens against the active session —
+            // this is the state machine that lets one host follow a Bazzite box across Gaming↔Desktop.
+            let active = crate::vdisplay::detect_active_session();
+            crate::vdisplay::apply_session_env(&active);
+            tracing::info!(
+                active = ?active.kind,
+                wayland = active.env.wayland_display.as_deref().unwrap_or("-"),
+                "detected active graphical session"
+            );
+            crate::vdisplay::compositor_for_kind(active.kind)
+        };
+        let available = crate::vdisplay::available();
+        let chosen = pick_compositor(pref, &available, detected).ok_or_else(|| {
         anyhow!("no usable compositor (no live graphical session for this uid; set PUNKTFUNK_COMPOSITOR or start a desktop/gaming session)")
     })?;
-    if !overridden {
-        // Point input at the same backend and select gamescope ATTACH (no churny managed restart).
-        crate::vdisplay::apply_input_env(chosen);
-    }
-    let avail_ids: Vec<&str> = available.iter().map(|c| c.id()).collect();
-    match Compositor::from_pref(pref) {
-        Some(want) if want == chosen => {
-            tracing::info!(
-                compositor = chosen.id(),
-                "honoring client compositor request"
-            )
+        if !overridden {
+            // Point input at the same backend and select gamescope ATTACH (no churny managed restart).
+            crate::vdisplay::apply_input_env(chosen);
         }
-        Some(want) => tracing::warn!(
-            requested = want.id(),
-            chosen = chosen.id(),
-            available = ?avail_ids,
-            "client-requested compositor unavailable — falling back to auto-detect"
-        ),
-        None => tracing::info!(
-            compositor = chosen.id(),
-            "auto-detected compositor (client: auto)"
-        ),
-    }
-    Ok(chosen)
+        let avail_ids: Vec<&str> = available.iter().map(|c| c.id()).collect();
+        match Compositor::from_pref(pref) {
+            Some(want) if want == chosen => {
+                tracing::info!(
+                    compositor = chosen.id(),
+                    "honoring client compositor request"
+                )
+            }
+            Some(want) => tracing::warn!(
+                requested = want.id(),
+                chosen = chosen.id(),
+                available = ?avail_ids,
+                "client-requested compositor unavailable — falling back to auto-detect"
+            ),
+            None => tracing::info!(
+                compositor = chosen.id(),
+                "auto-detected compositor (client: auto)"
+            ),
+        }
+        Ok(chosen)
     }
 }
 

crates/punktfunk-host/src/vdisplay.rs

@@ -540,10 +540,10 @@ mod gamescope;
 mod kwin;
 #[cfg(target_os = "linux")]
 mod mutter;
-#[cfg(target_os = "linux")]
-mod wlroots;
 #[cfg(target_os = "windows")]
 mod sudovda;
+#[cfg(target_os = "linux")]
+mod wlroots;
 
 #[cfg(test)]
 mod tests {

crates/punktfunk-host/src/vdisplay/sudovda.rs

@@ -229,11 +229,16 @@ impl VirtualDisplay for SudoVdaDisplay {
             device_name,
             serial: [0u8; 14],
         };
-        let add_bytes =
-            unsafe { std::slice::from_raw_parts(&add as *const _ as *const u8, size_of::<AddParams>()) };
+        let add_bytes = unsafe {
+            std::slice::from_raw_parts(&add as *const _ as *const u8, size_of::<AddParams>())
+        };
         let mut out = [0u8; size_of::<AddOut>()];
-        unsafe { ioctl(self.device, IOCTL_ADD, add_bytes, &mut out) }
-            .with_context(|| format!("SudoVDA ADD {}x{}@{}", mode.width, mode.height, mode.refresh_hz))?;
+        unsafe { ioctl(self.device, IOCTL_ADD, add_bytes, &mut out) }.with_context(|| {
+            format!(
+                "SudoVDA ADD {}x{}@{}",
+                mode.width, mode.height, mode.refresh_hz
+            )
+        })?;
         let ao = unsafe { *(out.as_ptr() as *const AddOut) };
         tracing::info!(
             "SudoVDA created {}x{}@{} (target_id={}, adapter_luid={:#x})",
@@ -281,10 +286,12 @@ impl VirtualDisplay for SudoVdaDisplay {
         Ok(VirtualOutput {
             node_id: 0, // unused on Windows; the capture target is the GDI name below
             preferred_mode: Some((mode.width, mode.height, mode.refresh_hz)),
-            win_capture: gdi_name.clone().map(|n| crate::capture::dxgi::WinCaptureTarget {
-                adapter_luid: crate::capture::dxgi::pack_luid(ao.luid),
-                gdi_name: n,
-            }),
+            win_capture: gdi_name
+                .clone()
+                .map(|n| crate::capture::dxgi::WinCaptureTarget {
+                    adapter_luid: crate::capture::dxgi::pack_luid(ao.luid),
+                    gdi_name: n,
+                }),
             keepalive: Box::new(SudoVdaKeepalive {
                 device: device_raw,
                 guid: MONITOR_GUID,
@@ -314,8 +321,9 @@ impl Drop for SudoVdaKeepalive {
             let _ = j.join();
         }
         let rp = RemoveParams { guid: self.guid };
-        let rp_bytes =
-            unsafe { std::slice::from_raw_parts(&rp as *const _ as *const u8, size_of::<RemoveParams>()) };
+        let rp_bytes = unsafe {
+            std::slice::from_raw_parts(&rp as *const _ as *const u8, size_of::<RemoveParams>())
+        };
         let mut none: [u8; 0] = [];
         let h = HANDLE(self.device as *mut c_void);
         if let Err(e) = unsafe { ioctl(h, IOCTL_REMOVE, rp_bytes, &mut none) } {