-void bs_restore(char *dst, char *c, unsigned long int k, unsigned long int len);
+void bs_restore(char *dst, char *c, Uint32 k, Uint32 len);
+
+int bs_readblock(FILE *fp, char *data, Uint32 pagesize, int usar_dic);
+
+char *bs_finalblock(char *data, Uint32 len, Uint32 *new_size);