新增大窗口播放视频按键，窗口大小根据解码视频分辨率自动调整，关掉大窗口回到原来位置播放视频

FactoryTestTool/SourceCode/Media/VideoDecoder/FFmpegDecoder.h

@@ -56,9 +56,12 @@ private:
     QWaitCondition   condition;
     QString          filePath;
     QLabel*          videoLabel;
-    QLineEdit*       resolutionEdit;                   
+    QLabel*          videoLabelTemp;  // 临时存储新标签   
+    QLineEdit*       resolutionEdit;
+    bool             videoLabelChanged = false; 
     bool             abort;
     bool             restart;
+    bool             isGotResolution = false;
 
     AVFormatContext* formatContext;
     AVCodecContext*  codecContext;
@@ -66,9 +69,10 @@ private:
     AVPacket*        packet;
     SwsContext*      swsContext;
     int              videoStreamIndex;
+    int              FocusWindowWidth  = 0;
+    int              FocusWindowHeight = 0;
 
     RingBuffer* ringBuffer;
-    //QLabel* singleFrameLabel; // 用于解码单帧的标签
 };
 
 #endif // FFMPEGDECODER_H