define min max for instead of minmax.h for linux

 #include "AVTranscoder.h"
 #include "tools.h"
-#include <minmax.h>
+
+#ifndef max
+#define max(a,b)            (((a) > (b)) ? (a) : (b))
+#endif  /* max */
+
+#ifndef min
+#define min(a,b)            (((a) < (b)) ? (a) : (b))
+#endif  /* min */
 
 extern "C" {
 #include <libswscale/swscale.h>