Added video feed support for Linux clients

src/video_stream.rs

@@ -26,11 +26,77 @@ pub fn start_stream(
 ) -> &'static str {
     #[cfg(target_os = "linux")]
     {
-        _ = ctx.callback_null(
-            "VIDEO ERROR",
-            "Screen capture is only supported on Windows",
-        );
-        return "screen capture unsupported";
+        let (stop_tx, stop_rx): (Sender<()>, Receiver<()>) = mpsc::channel();
+        let (status_tx, status_rx): (Sender<Result<(), String>>, Receiver<Result<(), String>>) = mpsc::channel();
+
+        let rtsp_url = if username.is_empty() || password.is_empty() {
+            format!("rtsp://{}:{}/{}", address, port, stream_path)
+        } else {
+            format!(
+                "rtsp://{}:{}@{}:{}/{}",
+                username, password, address, port, stream_path
+            )
+        };
+
+        let rtsp_url_clone = rtsp_url.clone();
+
+        thread::spawn(move || {
+            let mut cmd = Command::new("ffmpeg");
+            cmd.args(&[
+                "-f",
+                "gdigrab",
+                "-i",
+                "desktop",
+                "-f",
+                "rtsp",
+                "-rtsp_transport",
+                "tcp",
+                &rtsp_url_clone,
+            ]);
+
+            // Try to spawn ffmpeg process
+            let child_result = cmd.spawn();
+
+            match child_result {
+                Ok(mut child) => {
+                    let _ = status_tx.send(Ok(()));
+                    if stop_rx.recv().is_err() {}
+                    let _ = child.kill();
+                }
+                Err(e) => {
+                    let _ = status_tx.send(Err(format!("Failed to start FFmpeg: {}", e)));
+                }
+            }
+        });
+
+        // Save the stop channel
+        match STREAM_CTRL.lock() {
+            Ok(mut lock) => *lock = Some(stop_tx),
+            Err(e) => {
+                let _ = ctx.callback_data(
+                    "VIDEO ERROR",
+                    "Failed to acquire lock for stream control",
+                    e.to_string(),
+                );
+                return "stream control lock error";
+            }
+        }
+
+        // Wait up to 2 seconds to see if ffmpeg started correctly
+        match status_rx.recv_timeout(Duration::from_secs(2)) {
+            Ok(Ok(())) => {
+                let _ = ctx.callback_null("VIDEO", "FFmpeg started successfully");
+                "starting video stream"
+            }
+            Ok(Err(e)) => {
+                let _ = ctx.callback_data("VIDEO ERROR", "FFmpeg failed to start", e);
+                "ffmpeg failed to start"
+            }
+            Err(_) => {
+                let _ = ctx.callback_null("VIDEO ERROR", "FFmpeg did not respond in time");
+                "ffmpeg did not respond"
+            }
+        }
     }
 
     #[cfg(target_os = "windows")]