feat: 深入适配 RK628D CSI 采集卡的设备识别、参数读取、自恢复和音频采集

src/web/audio_ws.rs

@@ -78,15 +78,13 @@ async fn handle_audio_socket(socket: WebSocket, state: Arc<AppState>) {
     loop {
         tokio::select! {
             // Receive Opus frames and send to client
-            opus_result = opus_rx.changed() => {
-                if opus_result.is_err() {
-                    info!("Audio stream closed");
-                    break;
-                }
-
-                let frame = match opus_rx.borrow().clone() {
-                    Some(frame) => frame,
-                    None => continue,
+            opus_result = opus_rx.recv() => {
+                let frame = match opus_result {
+                    Some(f) => f,
+                    None => {
+                        info!("Audio stream closed");
+                        break;
+                    }
                 };
 
                 let binary = encode_audio_packet(&frame, stream_start);

src/web/handlers/mod.rs

@@ -988,6 +988,7 @@ pub struct VideoDevice {
     pub driver: String,
     pub formats: Vec<VideoFormat>,
     pub usb_bus: Option<String>,
+    pub has_signal: bool,
 }
 
 #[derive(Serialize)]
@@ -1083,10 +1084,14 @@ pub async fn list_devices(State(state): State<Arc<AppState>>) -> Json<DeviceList
                         })
                         .collect(),
                     usb_bus,
+                    has_signal: d.has_signal,
                 }
             })
             .collect(),
-        Err(_) => vec![],
+        Err(e) => {
+            warn!(error = %e, "Video device enumeration failed; returning empty video list for /api/devices");
+            vec![]
+        }
     };
 
     // Detect serial devices (common USB/ACM ports) - single directory read