+void pi_copyrect(unsigned char *dst, unsigned char *src, unsigned short src_pitch, unsigned short dst_pitch, unsigned short w, unsigned short h);
+void pi_copyrect_ex(unsigned char *dst, unsigned char *src, unsigned short src_pitch, unsigned short dst_pitch, unsigned short src_x, unsigned short src_y, unsigned short dst_x, unsigned short dst_y, unsigned short w, unsigned short h);