Disable screencast when PipeWire is missing

This can cause a panic.

2 files changed, 8 insertions, 2 deletions

diff --git a/src/dbus/mod.rs b/src/dbus/mod.rs
index 75d6da16..6d8b81e6 100644
--- a/src/dbus/mod.rs
+++ b/src/dbus/mod.rs
@@ -67,7 +67,7 @@ impl DBusServers {
             dbus.conn_screen_shot = try_start(screenshot);
 
             #[cfg(feature = "xdp-gnome-screencast")]
-            {
+            if niri.pipewire.is_some() {
                 let (to_niri, from_screen_cast) = calloop::channel::channel();
                 niri.event_loop
                     .insert_source(from_screen_cast, {
@@ -82,6 +82,8 @@ impl DBusServers {
                     .unwrap();
                 let screen_cast = ScreenCast::new(backend.enabled_outputs(), to_niri);
                 dbus.conn_screen_cast = try_start(screen_cast);
+            } else {
+                warn!("disabling screencast support because we couldn't start PipeWire");
             }
         }
 
diff --git a/src/niri.rs b/src/niri.rs
index f63f05a3..b87ce915 100644
--- a/src/niri.rs
+++ b/src/niri.rs
@@ -898,7 +898,11 @@ impl State {
                     }
                 };
 
-                let pw = self.niri.pipewire.as_ref().unwrap();
+                let Some(pw) = &self.niri.pipewire else {
+                    error!("screencasting must be disabled if PipeWire is missing");
+                    return;
+                };
+
                 match pw.start_cast(
                     to_niri.clone(),
                     gbm,