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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "hdf5.h"
#include "h5test.h"
#include "h5repack.h"
#define DIM1 40
#define DIM2 20
#define CDIM1 DIM1/2
#define CDIM2 DIM2/2
#define RANK 2
/*-------------------------------------------------------------------------
* Function: make_deflate
*
* Purpose: make a dataset using DEFLATE (GZIP) compression in LOC_ID
*
*-------------------------------------------------------------------------
*/
int make_deflate(hid_t loc_id)
{
hid_t dcpl; /* dataset creation property list */
hid_t dsid; /* dataset ID */
hid_t sid; /* dataspace ID */
hsize_t dims[RANK]={DIM1,DIM2};
hsize_t chunk_dims[RANK]={CDIM1,CDIM2};
int buf[40][20];
int i, j, n=0;
for (i=0; i<DIM1; i++){
for (j=0; j<DIM2; j++){
buf[i][j]=n++;
}
}
/* create a space */
if((sid = H5Screate_simple(RANK, dims, NULL))<0)
return -1;
/* create the dataset creation property list */
if ((dcpl = H5Pcreate(H5P_DATASET_CREATE))<0)
goto out;
/* set up for deflated data */
if(H5Pset_chunk(dcpl, RANK, chunk_dims)<0)
goto out;
if(H5Pset_deflate(dcpl, 9)<0)
goto out;
/* create the dataset */
if((dsid = H5Dcreate (loc_id, "dset_gzip", H5T_NATIVE_INT, sid, dcpl))<0)
goto out;
/* write the data to the dataset */
if(H5Dwrite(dsid, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf)<0)
goto out;
/* close */
if(H5Dclose(dsid)<0)
goto out;
/*-------------------------------------------------------------------------
* close
*-------------------------------------------------------------------------
*/
if(H5Sclose(sid)<0)
goto out;
if(H5Pclose(dcpl)<0)
goto out;
return 0;
out:
H5E_BEGIN_TRY {
H5Dclose(dsid);
H5Pclose(dcpl);
H5Sclose(sid);
} H5E_END_TRY;
return -1;
}
/*-------------------------------------------------------------------------
* Function: make_szip
*
* Purpose: make a dataset using SZIP compression in LOC_ID
*
*-------------------------------------------------------------------------
*/
int make_szip(hid_t loc_id)
{
hid_t dcpl; /* dataset creation property list */
hid_t dsid; /* dataset ID */
hid_t sid; /* dataspace ID */
unsigned szip_options_mask=H5_SZIP_ALLOW_K13_OPTION_MASK|H5_SZIP_NN_OPTION_MASK;
unsigned szip_pixels_per_block;
hsize_t dims[RANK]={DIM1,DIM2};
hsize_t chunk_dims[RANK]={CDIM1,CDIM2};
int buf[40][20];
int i, j, n=0;
for (i=0; i<DIM1; i++){
for (j=0; j<DIM2; j++){
buf[i][j]=n++;
}
}
memset(buf,0,sizeof buf);
/*
pixels_per_block must be an even number, and <= pixels_per_scanline
and <= MAX_PIXELS_PER_BLOCK
*/
szip_pixels_per_block=16;
/* create a space */
if((sid = H5Screate_simple(RANK, dims, NULL))<0)
return -1;
/* create the dataset creation property list */
if ((dcpl = H5Pcreate(H5P_DATASET_CREATE))<0)
goto out;
/* set up for sziped data */
if(H5Pset_chunk(dcpl, RANK, chunk_dims)<0)
goto out;
if(H5Pset_szip (dcpl, szip_options_mask, szip_pixels_per_block)<0)
goto out;
/* create the dataset */
if((dsid = H5Dcreate (loc_id, "dset_szip", H5T_NATIVE_INT, sid, dcpl))<0)
goto out;
/* write the data to the dataset */
if(H5Dwrite(dsid, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf)<0)
goto out;
/* close */
if(H5Dclose(dsid)<0)
goto out;
if(H5Pclose(dcpl)<0)
goto out;
if(H5Sclose(sid)<0)
goto out;
return 0;
out:
H5E_BEGIN_TRY {
H5Dclose(dsid);
H5Pclose(dcpl);
H5Sclose(sid);
} H5E_END_TRY;
return -1;
}
/*-------------------------------------------------------------------------
* Function: make_nofilters
*
* Purpose: make several dataset with no filters
*
*-------------------------------------------------------------------------
*/
int make_nofilters(hid_t loc_id)
{
char name[5];
hsize_t dims[RANK]={DIM1,DIM2};
int buf[40][20];
int i, j, n=0;
for (i=0; i<DIM1; i++){
for (j=0; j<DIM2; j++){
buf[i][j]=n++;
}
}
for (i=0; i<4; i++)
{
sprintf(name,"dset%d",i+1);
if (write_dset(loc_id,RANK,dims,name,H5T_NATIVE_INT,buf)<0)
return -1;
}
return 0;
}
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