2003-04-01 01:59:04 +08:00
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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2002-11-20 21:27:30 +08:00
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/*
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* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
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* Thursday, November 14, 2002
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*
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* Purpose: Create a dataset compressed with the deflate filter.
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* This program is used to create the test file `tdeflate.h5' which has
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* a dataset compressed with the "deflate" I/O filter. This dataset will
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* be used to verify the correct behavior of the library when a filter is
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* not available for a dataset which requires it.
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*/
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#include "hdf5.h"
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#define TESTFILE "deflate.h5"
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/* 2-D dataset with fixed dimensions */
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#define SPACE_RANK 2
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#define SPACE_DIM1 100
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#define SPACE_DIM2 200
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#define CHUNK_DIM1 50
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#define CHUNK_DIM2 50
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/* Dataset data */
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int data[SPACE_DIM1][SPACE_DIM2];
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/*-------------------------------------------------------------------------
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* Function: main
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*
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* Purpose:
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*
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* Return: Success:
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*
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* Failure:
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*
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* Programmer: Quincey Koziol
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* Thursday, November 14, 2002
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*
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* Modifications:
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*
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*-------------------------------------------------------------------------
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*/
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int
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main(void)
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{
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hid_t file, space, dset, dcpl;
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hsize_t dims[SPACE_RANK]={SPACE_DIM1,SPACE_DIM2};
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hsize_t chunk_dims[SPACE_RANK]={CHUNK_DIM1,CHUNK_DIM2};
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size_t i,j; /* Local index variables */
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/* Initialize the data */
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/* (Try for something easily compressible) */
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for(i=0; i<SPACE_DIM1; i++)
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for(j=0; j<SPACE_DIM2; j++)
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data[i][j]=j%5;
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/* Create the file */
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file = H5Fcreate(TESTFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
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if(file<0)
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printf("file<0!\n");
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/* Create the dataspace */
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space = H5Screate_simple(SPACE_RANK, dims, NULL);
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if(space<0)
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printf("space<0!\n");
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/* Create the dataset creation property list */
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dcpl = H5Pcreate(H5P_DATASET_CREATE);
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if(dcpl<0)
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printf("dcpl<0!\n");
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/* Set up for deflated data */
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if(H5Pset_chunk(dcpl, 2, chunk_dims)<0)
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printf("H5Pset_chunk() failed!\n");
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if(H5Pset_deflate(dcpl, 9)<0)
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printf("H5Pset_deflate() failed!\n");
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/* Create the compressed dataset */
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dset = H5Dcreate(file, "Dataset1", H5T_NATIVE_INT, space, dcpl);
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if(dset<0)
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printf("dset<0!\n");
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/* Write the data to the dataset */
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if(H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data)<0)
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printf("H5Dwrite() failed!\n");
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/* Close everything */
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if(H5Pclose(dcpl)<0)
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printf("H5Pclose() failed!\n");
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if(H5Dclose(dset)<0)
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printf("H5Dclose() failed!\n");
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if(H5Sclose(space)<0)
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printf("H5Sclose() failed!\n");
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if(H5Fclose(file)<0)
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printf("H5Fclose() failed!\n");
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return 0;
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}
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