extern void EncodeUnicode (unsigned char* dest, const unsigned char* src, int len);
extern void DecodeUnicode (unsigned char* dest, const unsigned char* src, int len);
extern void EncodeUTF8 (unsigned char* dest, const unsigned char* src, int len);
extern void EncodeUnicode (unsigned char* dest, const unsigned char* src, int len);
extern void DecodeUnicode (unsigned char* dest, const unsigned char* src, int len);
extern void EncodeUTF8 (unsigned char* dest, const unsigned char* src, int len);