mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-11-27 02:10:55 +08:00
1a5197918c
Purpose:
new features
Description:
1. add an option to convert HDF4 file without HDF4 specified attributes such as
HDF4_OBJECT_TYPE, HDF4_REF_NUM etc.
it can be done by inputting "h4toh5 -na input.hdf"
The default converter will still keep HDF4 specfied attributes.
2. Add compression features (gzip) for image too. Now the compressed HDF4 image
can be supported by using HDF5 gzip. Not sure whether tools can read it. Need to be tested.
3. Change SPACEPAD to NULLTERM for HDF4 dimensional name list. We can use variable length HDF5 string to represent these names, however currently H5dump and H5view cannot support variable length HDF5 string. converter will wait for other tools' update.
Solution:
Platforms tested:
eirene(Red Hat 6.2) and arabica(solaris 2.7)
240 lines
7.7 KiB
C
240 lines
7.7 KiB
C
/*-------------------------------------------------------------------------
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*
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* Copyright (C) 2000 National Center for Supercomputing Applications.
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* All rights reserved.
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*
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*-------------------------------------------------------------------------
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*/
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/******************************************************************************
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Description:
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1. converter
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See HDF4 to HDF5 mapping specification at
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(http://hdf.ncsa.uiuc.edu/HDF5/papers/h4toh5) for the default mapping
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from HDF4 object to HDF5 object.
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The whole converter includes 10 files, h4toh5util.h, h4toh5main.h, h4toh5util.c, h4toh5main.c, h4toh5sds.c, h4toh5image.c,h4toh5vdata.c,h4toh5vgroup.c,h4toh5pal.c and h4toh5anno.c.
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2. this file
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Including declarations of global variables,global hashtables,constant
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and utility subroutines of h4toh5util.c
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Author: Kent Yang(ymuqun@ncsa.uiuc.edu)
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*****************************************************************************/
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#ifndef UTILITY_H
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#define UTILITY_H
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#include "hdf5.h"
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#include "hdf.h"
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/**********************************************/
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/*************** section I *******************/
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/*This section of the file describes reserved
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name and global parameters used in h4-h5
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converter.*/
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/*********************************************/
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/* 0. if "/" is found in hdf4 object name, we will use another
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character "_" to replace it, since "/" is a reserved symbol for hdf5. */
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#define ORI_SLASH '/'
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#define CHA_SLASH '_'
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/* 1. character string used for default attribute name. */
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#define ATTR "ATTR"
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/* 2. Predefined HDF5 Attribute name for HDF4 file */
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#define HDF4_OBJECT_NAME "HDF4_OBJECT_NAME"
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#define HDF4_OBJECT_TYPE "HDF4_OBJECT_TYPE"
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#define HDF4_REF_NUM "HDF4_REF_NUM"
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#define HDF4_VGROUP_CLASS "HDF4_VGROUP_CLASS"
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#define HDF4_IMAGE_CLASS "CLASS"
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#define HDF4_IMAGE_SUBCLASS "IMAGE_SUBCLASS"
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#define HDF4_PALETTE_CLASS "CLASS"
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#define HDF4_PALETTE_TYPE "PAL_TYPE"
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#define PAL_TYPE "STANDARD8"
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#define PAL_COLORMODEL "PAL_COLORMODEL"
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#define HDF5_RGB "RGB"
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/* 3. reserved name for HDF5 object name when meeting with name clashing. */
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#define HDF4_VGROUP "HDF4_VGROUP"
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#define HDF4_PALETTE "HDF4_PALETTE"
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#define HDF4_SDS "HDF4_SDS"
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#define HDF4_VDATA "HDF4_VDATA"
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#define HDF4_IMAGE "HDF4_IMAGE"
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#define HDF4_DIMSCALE "HDF4_DIMSCALE"
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/* 4. global palette and dimension_list name. */
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#define HDF4_IMAGE_PALETTE "HDF4_IMAGE_PALETTE"
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#define HDF4_DIMENSION_LIST "HDF4_DIMENSION_LIST"
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#define PALETTE "PALETTE"
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#define DIMSCALE "DIMSCALE"
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/* 5. define affix GLO for sds and image file attributes. these file attributes
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will be put under root group. */
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#define GLOSDS "GLOSDS"
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#define GLOIMAGE "GLOIMAGE"
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/* 6. define HDF object label.*/
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#define SDSLABEL "SDS"
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#define VDATALABEL "Vdata"
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#define VDATTRLAB "Vdata attribute"
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#define VGROUPLABEL "Vgroup"
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#define GRLABEL "GR"
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#define RAST8LABEL "raster8"
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#define RAST24LABEL "raster24"
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#define PALABEL "palette"
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#define LABEL_LENG 20
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/* 7. define "IMAGE" CLASS required by image spec. */
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#define IM_CLASS "IMAGE"
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/* 8. reserved group name for HDF4 dimensional scale and palette. */
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#define HDF4_DIMG "/HDF4_DIMGROUP"
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#define HDF4_PALG "/HDF4_PALGROUP"
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/* 9. reserved name for hdf4 file label,file description, object label,
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object description. */
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#define HDF4_FILE_LABEL "HDF4_FILE_LABEL"
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#define HDF4_FILE_DESC "HDF4_FILE_DESCRIPTION"
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#define HDF4_OBJECT_LABEL "HDF4_OBJECT_LABEL"
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#define HDF4_OBJECT_DESC "HDF4_OBJECT_DESCRIPTION"
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#define HDF4_SDS_LABEL "HDF4_SDS_LABEL"
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#define HDF4_SDS_DESC "HDF4_SDS_DESC"
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#define HDF4_IMAGE_LABEL "HDF4_IMAGE_LABEL"
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#define HDF4_IMAGE_DESC "HDF4_IMAGE_DESC"
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#define HDF4_VDATA_LABEL "HDF4_VDATA_LABEL"
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#define HDF4_VDATA_DESC "HDF4_VDATA_DESC"
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#define HDF4_VGROUP_LABEL "HDF4_VGROUP_LABEL"
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#define HDF4_VGROUP_DESC "HDF4_VGROUP_DESC"
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#define HDF4_PAL_LABEL "HDF4_PAL_LABEL"
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#define HDF4_PAL_DESC "HDF4_PAL_DESC"
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#define HDF4_IMAGE_INDEXED "HDF4_IMAGE_INDEXED"
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/*10. palette and dimensional scale hash size and the
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maximum length of object reference number in string format.
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global variables of vgroup, vdata, sds, image and total number of
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the object, number of global sds attributes and GR attributes.*/
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#define PAL_HASHSIZE 64
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#define DIM_HASHSIZE 64
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#define VG_DEFHASHSIZE 64
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#define VD_DEFHASHSIZE 64
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#define MAXREF_LENGTH 5
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/*considering the string size of HDF4_DIMGROUP. we add this into 276.*/
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#define MAX_DIM_NAME 276
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#define MAX_PAL_NAME 32
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/*11. adding a specified vdata class name to deal with the situation when
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independent vdata is hdf chunking table _HDF_CHK_TBL_CLASS, if it becomes
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public constant for hdf lib, this constant can be released.*/
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#define _HDF_CHK_TBL_CLASS "_HDF_CHK_TBL_"
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/*11. the compression level currently is set to the maximum level.*/
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#define GZIP_COMLEVEL 9
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/*12. fake sds dimension name*/
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#define fakeDim "fakeDim"
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extern int32 estnum_vg;
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extern int32 estnum_vd;
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extern int32 num_sds;
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extern int32 num_images;
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extern int num_objects;
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extern int32 num_glsdsattrs;
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extern int32 num_glgrattrs;
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/**********************************************/
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/*************** section II *******************/
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/*This section describes hash tables and their
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functions used in h4-h5 converter.*/
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/*********************************************/
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/*define two kinds of hashtables.
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1. struct table uses object reference as the key to handle whether this
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object is visited or not.
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2. struct name_table uses object name as the key to handle name clashings and
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dimensional scale dataset.
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*/
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struct table {
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int ref;
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struct table *next;
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char *name;
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};
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struct name_table {
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char *name;
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struct name_table *next;
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};
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extern struct table* sds_hashtab;
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extern struct table* gr_hashtab;
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extern struct table* vg_hashtab;
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extern struct table* vd_hashtab;
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extern struct table* pal_hashtab;
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extern struct name_table* name_hashtab;
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extern struct name_table* dim_hashtab;
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/* routine for zeroing out the memory. */
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void h4toh5_ZeroMemory(void*s,size_t n);
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/* look-up table, object reference is the key.*/
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int lookup(int,int,struct table*);
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/*look-up table, key is name. */
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int hash_fun(char*name,int size);
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int lookup_name(char*, int,struct name_table*);
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/* routines that initialize the tables and name tables.*/
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int init_tab(int,struct table*);
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int init_nametab(int,struct name_table*);
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/* get name and set name for table. */
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char* get_name(int,int,struct table *,int*);
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int set_name(int,int,struct table *,char*);
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/* free table routines. */
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int freetable(int,struct table *);
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int freenametable(int, struct name_table*);
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void freehashmemory(void);
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/**********************************************/
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/*************** section III *******************/
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/*This section describes other common routines and their
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functions used in h4-h5 converter.*/
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/*********************************************/
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/* this routine defines the conversion of data type from h4 to h5. */
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herr_t h4type_to_h5type(const int32 h4type, hid_t* h5memtype,
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size_t* h4memsize, size_t* h4size, hid_t *h5type);
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/* routines for translating predefined hdf4 attributes into hdf5 attributes*/
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int h4_transpredattrs(hid_t ,const char *,char*data);
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int h4_transnumattr(hid_t h5g,const char *,uint16 group_ref);
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int vg_transattrs(int32,hid_t,int);
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/*string and int conversion routines.*/
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hid_t mkstr(int size, H5T_str_t pad);
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herr_t h5string_to_int(const int32, hid_t*,const size_t,hid_t* );
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int conv_int_str(uint16, char*);
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/* these routines were utility functions for other routines at h4toh5util.c */
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char* trans_obj_name(int32,int32);
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char* get_obj_aboname(char*,char*,char*,const char*);
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char* make_objname_no(char*,char*,const char*);
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char* make_objname_yes(char*,char*);
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char* correct_name(char*);
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#endif
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