hdf5/tools/h5repack/h5repack.h

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */


#ifndef H5REPACK_H__
#define H5REPACK_H__

#include "hdf5.h"
#include "h5trav.h"

#if 1
#define H5_REPACK_DEBUG
#endif


#define PFORMAT  "%-7s %-7s %-7s\n" /*chunk info, compression info, name*/
#define PFORMAT1 "%-7s %-7s %-7s"     /*chunk info, compression info, name*/

#define MAX_NC_NAME 256 /* max length of a name */
#define MAX_VAR_DIMS 32 /* max per variable dimensions */


/*-------------------------------------------------------------------------
 * data structures for command line options
 *-------------------------------------------------------------------------
 */

/* a list of names */
typedef struct {
 char obj[MAX_NC_NAME]; 
} obj_list_t;

/* 
 the type of filter and additional parameter 
 type can be one of the filters
 H5Z_FILTER_NONE       0,  uncompress if compressed
 H5Z_FILTER_DEFLATE	   1 , deflation like gzip	   
 H5Z_FILTER_SHUFFLE    2 , shuffle the data
 H5Z_FILTER_FLETCHER32 3 , letcher32 checksum of EDC
 H5Z_FILTER_SZIP       4 , szip compression 
*/

#define CDVALUES 2

typedef struct {
 H5Z_filter_t filtn;               /* filter identification number */
 int          cd_values[CDVALUES]; /* filter client data values */
} filter_info_t;

/* chunk lengths along each dimension and rank */
typedef struct {
 hsize_t chunk_lengths[MAX_VAR_DIMS]; 
 int     rank;
} chunk_info_t;

/* we currently define a maximum value for the filters array,
   that corresponds to the current library filters */
#define H5_REPACK_MAX_NFILTERS 4

/* information for one object, contains PATH, CHUNK info and FILTER info */
typedef struct {
 char          path[MAX_NC_NAME];               /* name of object */
 filter_info_t filter[H5_REPACK_MAX_NFILTERS];  /* filter array */
 int           nfilters;                        /* current number of filters */
 H5D_layout_t  layout;                          /* layout information */
 chunk_info_t  chunk;                           /* chunk information */
 hid_t         refobj_id;                       /* object ID, references */
} pack_info_t;

/* store a table of all objects */
typedef struct {
 int         size;
 int         nelems;
 pack_info_t *objs;
} pack_opttbl_t;


/*-------------------------------------------------------------------------
 * command line options
 *-------------------------------------------------------------------------
 */

/* all the above, ready to go to the hrepack call */
typedef struct {
 pack_opttbl_t   *op_tbl;     /*table with all -c and -f options */
 int             all_layout;  /*apply the layout to all objects */
 int             all_filter;  /*apply the filter to all objects */
 filter_info_t   filter_g;    /*global filter INFO for the ALL case */
 chunk_info_t    chunk_g;     /*global chunk INFO for the ALL case */
 H5D_layout_t    layout_g;    /*global layout information for the ALL case */
 int verbose;                 /*verbose mode */
	int threshold;               /*minimum size to compress, in bytes */
} pack_opt_t;



/*-------------------------------------------------------------------------
 * public functions
 *-------------------------------------------------------------------------
 */

#ifdef __cplusplus
extern "C" {
#endif

int h5repack           (const char* infile, const char* outfile, pack_opt_t *options);
int h5repack_addfilter (const char* str, pack_opt_t *options);
int h5repack_addlayout (const char* str, pack_opt_t *options);
int h5repack_init      (pack_opt_t *options, int verbose);
int h5repack_end       (pack_opt_t *options);
int h5repack_verify    (const char *fname,pack_opt_t *options);
int h5repack_cmpdcpl   (const char *fname1,
                        const char *fname2);


#ifdef __cplusplus
}
#endif



/*-------------------------------------------------------------------------
 * private functions
 *-------------------------------------------------------------------------
 */


int check_objects(const char* fname, 
                  pack_opt_t *options);

int copy_objects(const char* fnamein, 
                 const char* fnameout,
                 pack_opt_t *options);

void print_objlist(const char *filename, 
                   int nobjects, 
                   trav_info_t *travi );

int do_copy_objects(hid_t fidin, 
                    hid_t fidout, 
                    trav_table_t *travt,
                    pack_opt_t *options);

int copy_attr(hid_t loc_in, 
              hid_t loc_out, 
              pack_opt_t *options
              );

const char* MapIdToName(hid_t refobj_id, 
                        trav_table_t *travt);

int do_copy_refobjs(hid_t fidin, 
                    hid_t fidout, 
                    trav_table_t *travt,
                    pack_opt_t *options); /* repack options */

int do_copy_refobjs_inattr(hid_t loc_in, 
              hid_t loc_out, 
              pack_opt_t *options,
              trav_table_t *travt,
              hid_t fidout         /* for saving references */
              );

void read_info(const char *filename,pack_opt_t *options);
void close_obj(H5G_obj_t obj_type, hid_t obj_id);

void init_packobject(pack_info_t *obj);
int print_filters(hid_t dcpl_id);



/*-------------------------------------------------------------------------
 * filters
 *-------------------------------------------------------------------------
 */

int filter_this(const char* name,
                pack_opt_t *options,
                pack_info_t *pack); /* info about object to filter */

int apply_filters(hid_t dcpl_id,
                  size_t size,         /* size of datatype in bytes */
                  pack_opt_t *options, /* repack options */
                  pack_info_t *pack);   /* info about object to filter */

int has_filter(hid_t dcpl_id,
               H5Z_filter_t filtnin);

int check_szip_params( unsigned bits_per_pixel, 
                       unsigned pixels_per_block, 
                       unsigned pixels_per_scanline, 
                       hsize_t image_pixels);

int check_szip(int rank,        /* chunk rank */
               hsize_t *dims,   /* chunk dims */
               size_t size,     /* size of datatype in bytes */
               unsigned szip_options_mask,
               unsigned szip_pixels_per_block);


/*-------------------------------------------------------------------------
 * layout functions
 *-------------------------------------------------------------------------
 */

int has_layout(hid_t dcpl_id,
               pack_info_t *obj);

int layout_this(hid_t dcpl_id,             /* DCPL from input object */
                const char* name,          /* object name from traverse list */
                pack_opt_t *options,       /* repack options */
                pack_info_t *pack /*OUT*/) /* object to apply layout */;

int apply_layout(hid_t dcpl_id,
                 pack_info_t *pack);  /* info about object  */


/*-------------------------------------------------------------------------
 * options table
 *-------------------------------------------------------------------------
 */
int          options_table_init( pack_opttbl_t **tbl );
int          options_table_free( pack_opttbl_t *table );
int          options_add_layout( obj_list_t *obj_list,
                                 int n_objs,
                                 pack_info_t *pack,
                                 pack_opttbl_t *table );
int          options_add_filter ( obj_list_t *obj_list,
                                 int n_objs,
                                 filter_info_t filt,
                                 pack_opttbl_t *table );
pack_info_t* options_get_object( const char *path,
                                 pack_opttbl_t *table);

/*-------------------------------------------------------------------------
 * parse functions
 *-------------------------------------------------------------------------
 */

obj_list_t* parse_filter(const char *str, 
                         int *n_objs, 
                         filter_info_t *filt,
                         pack_opt_t *options);

obj_list_t* parse_layout(const char *str, 
                         int *n_objs, 
                         pack_info_t *pack,    /* info about object */
                         pack_opt_t *options);

const char* get_sfilter (H5Z_filter_t filtn);
int         parse_number(char *str);

/*-------------------------------------------------------------------------
 * tests
 *-------------------------------------------------------------------------
 */

#define FNAME1     "test1.h5"
#define FNAME1OUT  "test1out.h5"
#define FNAME2     "test2.h5"
#define FNAME2OUT  "test2out.h5"
#define FNAME3     "test3.h5"
#define FNAME3OUT  "test3out.h5"
#define FNAME4     "test4.h5"
#define FNAME4OUT  "test4out.h5"

int make_testfiles(void);

int make_attr(hid_t fid);
int write_dset( hid_t loc_id, 
                int rank, 
                hsize_t *dims, 
                const char *dset_name,
                hid_t type_id, 
                void *buf );
int write_attr(hid_t loc_id, 
               int rank, 
               hsize_t *dims, 
               const char *attr_name,
               hid_t type_id, 
               void *buf);
void write_attr_in(hid_t loc_id, 
                   const char* dset_name, /* for saving reference to dataset*/
                   hid_t fid, /* for reference create */
                   int make_diffs /* flag to modify data buffers */);
void write_dset_in(hid_t loc_id, 
                   const char* dset_name, /* for saving reference to dataset*/
                   hid_t file_id,
                   int make_diffs /* flag to modify data buffers */);

int make_deflate(hid_t loc_id);
int make_szip(hid_t loc_id);
int make_nofilters(hid_t loc_id);



/*-------------------------------------------------------------------------
 * check SZIP parameters
 *-------------------------------------------------------------------------
 */

typedef struct 
{
 int compression_mode;
 int options_mask;
 unsigned bits_per_pixel;
 unsigned pixels_per_block;
 unsigned pixels_per_scanline;
 hsize_t pixels;

}szip_comp_t;  

/* for SZIP */
#if !defined (NN_OPTION_MASK)
#define NN_OPTION_MASK				 32
#endif
#if !defined (RAW_OPTION_MASK)
#define RAW_OPTION_MASK				128
#endif
#if !defined (MAX_BLOCKS_PER_SCANLINE)
#define MAX_BLOCKS_PER_SCANLINE		128
#endif
#if !defined (MAX_PIXELS_PER_BLOCK)
#define MAX_PIXELS_PER_BLOCK	 	 32
#endif
#if !defined (MAX_PIXELS_PER_SCANLINE)
#define MAX_PIXELS_PER_SCANLINE     (MAX_BLOCKS_PER_SCANLINE)*(MAX_PIXELS_PER_BLOCK)
#endif
#if !defined (NN_MODE)
#define NN_MODE	1
#endif



#endif  /* H5REPACK_H__ */