降低CPU使用率，处置好因降低CPU使用率带来的颜色偏差

SHH.MjpegPlayer/Core/Models/MjpegConfig.cs

@@ -10,11 +10,11 @@ public class MjpegConfig
         = "0.0.0.0";
 
     /// <summary>Mjpeg 服务端口开始</summary>
-    public int SvrMjpegPortBegin
+    public int SvrMjpegPortBegin { get; }
         = 25031;
 
     /// <summary>Mjpeg 服务端口结束</summary>
-    public int SvrMjpegPortEnd
+    public int SvrMjpegPortEnd { get; }
         = 25300;
 
     /// <summary>帧间隔, 单位毫秒 (值为 125, 每秒 8 帧)</summary>
@@ -22,7 +22,7 @@ public class MjpegConfig
         = 125;
 
     /// <summary>Mjpeg Wcf 接收图片接口</summary>
-    public int WcfPushImagePort
+    public int WcfPushImagePort { get; }
         = 25030;
 
     /// <summary>接收图片的服务器名称</summary>