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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, November 14, 2002
*
* Purpose: Create a dataset compressed with the deflate filter.
* This program is used to create the test file `tdeflate.h5' which has
* a dataset compressed with the "deflate" I/O filter. This dataset will
* be used to verify the correct behavior of the library when a filter is
* not available for a dataset which requires it.
*/
#include "hdf5.h"
#define TESTFILE "deflate.h5"
/* 2-D dataset with fixed dimensions */
#define SPACE_RANK 2
#define SPACE_DIM1 100
#define SPACE_DIM2 200
#define CHUNK_DIM1 50
#define CHUNK_DIM2 50
/* Dataset data */
int data[SPACE_DIM1][SPACE_DIM2];
/*-------------------------------------------------------------------------
* Function: main
*
* Purpose:
*
* Return: Success:
*
* Failure:
*
* Programmer: Quincey Koziol
* Thursday, November 14, 2002
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
int
main(void)
{
hid_t file, space, dset, dcpl;
hsize_t dims[SPACE_RANK]={SPACE_DIM1,SPACE_DIM2};
hsize_t chunk_dims[SPACE_RANK]={CHUNK_DIM1,CHUNK_DIM2};
size_t i,j; /* Local index variables */
/* Initialize the data */
/* (Try for something easily compressible) */
for(i=0; i<SPACE_DIM1; i++)
for(j=0; j<SPACE_DIM2; j++)
data[i][j] = (int)(j % 5);
/* Create the file */
file = H5Fcreate(TESTFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
if(file<0)
printf("file<0!\n");
/* Create the dataspace */
space = H5Screate_simple(SPACE_RANK, dims, NULL);
if(space<0)
printf("space<0!\n");
/* Create the dataset creation property list */
dcpl = H5Pcreate(H5P_DATASET_CREATE);
if(dcpl<0)
printf("dcpl<0!\n");
/* Set up for deflated data */
if(H5Pset_chunk(dcpl, 2, chunk_dims)<0)
printf("H5Pset_chunk() failed!\n");
if(H5Pset_deflate(dcpl, 9)<0)
printf("H5Pset_deflate() failed!\n");
/* Create the compressed dataset */
dset = H5Dcreate2(file, "Dataset1", H5T_NATIVE_INT, space, H5P_DEFAULT, dcpl, H5P_DEFAULT);
if(dset<0)
printf("dset<0!\n");
/* Write the data to the dataset */
if(H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data)<0)
printf("H5Dwrite() failed!\n");
/* Close everything */
if(H5Pclose(dcpl)<0)
printf("H5Pclose() failed!\n");
if(H5Dclose(dset)<0)
printf("H5Dclose() failed!\n");
if(H5Sclose(space)<0)
printf("H5Sclose() failed!\n");
if(H5Fclose(file)<0)
printf("H5Fclose() failed!\n");
return 0;
}
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