add: 添加自动对焦逻辑（还没写完）

server/src/Controllers/VideoStreamController.cs

@@ -365,4 +365,86 @@ public class VideoStreamController : ControllerBase
             return TypedResults.InternalServerError($"获取支持的分辨率列表失败: {ex.Message}");
         }
     }
+
+    /// <summary>
+    /// 初始化摄像头自动对焦功能
+    /// </summary>
+    /// <returns>初始化结果</returns>
+    [HttpPost("InitAutoFocus")]
+    public async Task<IResult> InitAutoFocus()
+    {
+        try
+        {
+            logger.Info("收到初始化自动对焦请求");
+
+            var result = await _videoStreamService.InitAutoFocusAsync();
+            
+            if (result)
+            {
+                logger.Info("自动对焦初始化成功");
+                return TypedResults.Ok(new
+                {
+                    success = true,
+                    message = "自动对焦初始化成功",
+                    timestamp = DateTime.Now
+                });
+            }
+            else
+            {
+                logger.Warn("自动对焦初始化失败");
+                return TypedResults.BadRequest(new
+                {
+                    success = false,
+                    message = "自动对焦初始化失败",
+                    timestamp = DateTime.Now
+                });
+            }
+        }
+        catch (Exception ex)
+        {
+            logger.Error(ex, "初始化自动对焦时发生异常");
+            return TypedResults.InternalServerError($"初始化自动对焦失败: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 执行自动对焦
+    /// </summary>
+    /// <returns>对焦结果</returns>
+    [HttpPost("AutoFocus")]
+    public async Task<IResult> AutoFocus()
+    {
+        try
+        {
+            logger.Info("收到执行自动对焦请求");
+
+            var result = await _videoStreamService.PerformAutoFocusAsync();
+            
+            if (result)
+            {
+                logger.Info("自动对焦执行成功");
+                return TypedResults.Ok(new
+                {
+                    success = true,
+                    message = "自动对焦执行成功",
+                    timestamp = DateTime.Now
+                });
+            }
+            else
+            {
+                logger.Warn("自动对焦执行失败");
+                return TypedResults.BadRequest(new
+                {
+                    success = false,
+                    message = "自动对焦执行失败",
+                    timestamp = DateTime.Now
+                });
+            }
+        }
+        catch (Exception ex)
+        {
+            logger.Error(ex, "执行自动对焦时发生异常");
+            return TypedResults.InternalServerError($"执行自动对焦失败: {ex.Message}");
+        }
+    }
 }