/****************************************************************************
 * NCSA HDF                                                                 *
 * Software Development Group                                               *
 * National Center for Supercomputing Applications                          *
 * University of Illinois at Urbana-Champaign                               *
 * 605 E. Springfield, Champaign IL 61820                                   *
 *                                                                          *
 * For conditions of distribution and use, see the accompanying             *
 * hdf/COPYING file.                                                        *
 *                                                                          *
 ****************************************************************************/

/*
 * This file contains public declarations for the H5S module.
 */
#ifndef _H5Rpublic_H
#define _H5Rpublic_H

/* Public headers needed by this file */
#include <H5public.h>
#include <H5Ipublic.h>

/*
 * Reference types allowed.
 */
typedef enum {
    H5R_BADTYPE     =   (-1),   /*invalid Reference Type                     */
    H5R_OBJECT,                 /*Object reference                           */
    H5R_DATASET_REGION,         /*Dataset Region Reference                   */
    H5R_INTERNAL,               /*Internal Reference                         */
    H5R_MAXTYPE                 /*highest type (Invalid as true type)	     */
} H5R_type_t;

#ifdef LATER
/* Generic reference structure for user's code */
typedef struct {
    unsigned long oid[2];       /* OID of object referenced */
    unsigned long region[2];    /* heap ID of region in object */
    unsigned long file[2];      /* heap ID of external filename */
} href_t;
#endif /* LATER */

/* Object reference structure for user's code */
typedef struct {
    unsigned long oid[2];       /* OID of object referenced */
} hobj_ref_t;

/* Dataset Region reference structure for user's code */
typedef struct {
    unsigned long oid[2];       /* OID of object referenced */
    unsigned long region[2];    /* heap ID of region in object */
    unsigned long bsize;        /* Memory buffer size */
    unsigned char *buf;         /* Serialized selection information */
} hdset_reg_ref_t;

/* Publicly visible datastructures */

#ifdef __cplusplus
extern "C" {
#endif

/* Functions in H5R.c */
herr_t H5Rcreate(void *ref, hid_t loc_id, const char *name,
		 H5R_type_t ref_type, hid_t space_id);
hid_t H5Rdereference(hid_t dataset, H5R_type_t ref_type, void *ref);
hid_t H5Rget_region(hid_t dataset, H5R_type_t ref_type, void *ref);

#ifdef __cplusplus
}
#endif

#endif  /* _H5Rpublic_H */