style: Add macros to enable/disable client building features

client/VideoManager.h

@@ -13,6 +13,10 @@
 #include "CaptureVideo.h"
 #include "VideoCodec.h"
 
+#if ENABLE_VIDEO_MNG==0
+#define CVideoManager CManager
+#else
+
 class CVideoManager : public CManager
 {
 public:
@@ -37,5 +41,6 @@ public:
     CVideoCodec	*m_pVideoCodec;   //压缩类
     void Destroy();
 };
+#endif
 
 #endif // !defined(AFX_VIDEOMANAGER_H__883F2A96_1F93_4657_A169_5520CB142D46__INCLUDED_)