Fix: Add AVX2 runtime check and optional x264 compilation

client/ScreenCapture.h

@@ -191,6 +191,7 @@ public:
         m_pScrollDetector(nullptr), m_bEnableScrollDetect(false), m_bServerSupportsScroll(false),
         m_bLastFrameWasScroll(false), m_nScrollDetectInterval(1)
     {
+        SetAlgorithm(algo);
         m_BitmapInfor_Send = nullptr;
         m_BmpZoomBuffer = nullptr;
         m_BmpZoomFirst = nullptr;
@@ -985,7 +986,7 @@ public:
     virtual BYTE SetAlgorithm(int algo)
     {
         BYTE oldAlgo = m_bAlgorithm;
-        m_bAlgorithm = algo;
+        m_bAlgorithm = (DISABLE_X264_FOR_TEST && algo == ALGORITHM_H264) ? ALGORITHM_RGB565 : algo;
         return oldAlgo;
     }