feat: 修改视频流后端服务，使其适配jpeg格式

server/src/Services/HttpVideoStreamService.cs

@@ -1,8 +1,5 @@
-#define USB_CAMERA
-
 using System.Net;
 using System.Text;
-using System.Threading.Tasks;
 using Peripherals.CameraClient; // 添加摄像头客户端引用
 
 #if USB_CAMERA
@@ -414,7 +411,7 @@ public class HttpVideoStreamService : BackgroundService
                 {
                     _usbCamera = new VideoCapture(1);
                     _usbCamera.Fps = _frameRate;
-                    _usbCamera.FrameWidth = _frameWidth;    
+                    _usbCamera.FrameWidth = _frameWidth;
                     _usbCamera.FrameHeight = _frameHeight;
                     _usbCameraEnable = _usbCamera.IsOpened();
                 }
@@ -1003,38 +1000,6 @@ public class HttpVideoStreamService : BackgroundService
         logger.Info("HTTP 视频流服务已停止");
     }
 
-    /// <summary>
-    /// 释放资源
-    /// </summary>
-    public override void Dispose()
-    {
-        if (_httpListener != null)
-        {
-            if (_httpListener.IsListening)
-            {
-                _httpListener.Stop();
-            }
-            _httpListener.Close();
-        }
-
-        lock (_clientsLock)
-        {
-            foreach (var client in _activeClients)
-            {
-                try { client.Close(); }
-                catch { /* 忽略关闭错误 */ }
-            }
-            _activeClients.Clear();
-        }
-
-        lock (_cameraLock)
-        {
-            _camera = null;
-        }
-
-        base.Dispose();
-    }
-
     /// <summary>
     /// 设置视频流分辨率
     /// </summary>