//--------------------------------------------------------------------------
// Function: DSetCreatPropList::getFilterById
///\brief Returns information about a filter in a pipeline given the
/// filter id
///\param filter_id - IN: Filter to get
///\param flags - OUT: General properties of the filter
///\param cd_nelmts - IN/OUT: Number of elements in \a cd_values /Number
/// of values defined by the filter
///\param cd_values - OUT: Array to hold the data; allocated by the user
///\param namelen - IN: Length of \a name
///\param name - OUT: Name of the filter
///\param filter_config - OUT: Flags indicating whether filter can encode/decode
///\exception H5::PropListIException
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void DSetCreatPropList::getFilterById(H5Z_filter_t filter_id,
unsigned int &flags, size_t &cd_nelmts, unsigned int* cd_values,
size_t namelen, char name[], unsigned int &filter_config) const
{
herr_t ret_value = H5Pget_filter_by_id2(id, filter_id, &flags, &cd_nelmts,
cd_values, namelen, name, &filter_config);
if (ret_value < 0)
throw PropListIException("DSetCreatPropList::getFilterById",
"H5Pget_filter_by_id2 failed");
}
/*-------------------------------------------------------------------------
* test_compress
*
* Ensures that a FL packet table can be compressed.
* This test creates a file named TEST_COMPRESS_FILE
*
*-------------------------------------------------------------------------
*/
static int
test_compress(void)
{
hid_t fid1 = -1;
herr_t err;
hid_t table = -1;
hid_t part_t = -1;
hid_t dset_id = -1;
hid_t plist_id = -1;
size_t c;
size_t num_elems = 1;
unsigned filter_vals[1];
particle_t readPart[1];
hsize_t count;
TESTING("packet table compression");
/* Create a file. */
if((fid1 = H5Fcreate(TEST_COMPRESS_FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
/* Create a datatype for the particle struct */
part_t = make_particle_type();
HDassert(part_t != -1);
/* Create a new table with compression level 8 */
table = H5PTcreate_fl(fid1, "Compressed Test Dataset", part_t, (hsize_t)80, 8);
if( H5PTis_valid(table) < 0) TEST_ERROR;
/* We can now use this table exactly the same way we use a normal uncompressed
* packet table, and it should pass the same tests. */
/* Add many particles */
for(c = 0; c < BIG_TABLE_SIZE ; c+=8)
{
/* Append eight particles at once*/
err = H5PTappend(table, (size_t)8, &(testPart[0]));
if( err < 0) TEST_ERROR;
}
/* Count the number of packets in the table */
err = H5PTget_num_packets(table, &count);
if( err < 0) TEST_ERROR;
if( count != BIG_TABLE_SIZE ) TEST_ERROR;
/* Read particles to ensure that all of them were written correctly */
HDmemset(readPart, 0, sizeof(readPart));
for(c = 0; c < BIG_TABLE_SIZE; c++)
{
err = H5PTget_next(table, 1, readPart);
if(err < 0) TEST_ERROR;
/* Ensure that particles were read correctly */
if( cmp_par(c % 8, 0, testPart, readPart) != 0) TEST_ERROR;
}
/* Close the table */
err = H5PTclose(table);
if( err < 0) TEST_ERROR;
/* Open the packet table as a regular dataset and make sure that the
* compression filter is set.
*/
dset_id = H5Dopen2(fid1, "Compressed Test Dataset", H5P_DEFAULT);
if( dset_id < 0) TEST_ERROR;
plist_id = H5Dget_create_plist(dset_id);
if( plist_id < 0) TEST_ERROR;
err = H5Pget_filter_by_id2(plist_id, H5Z_FILTER_DEFLATE, NULL, &num_elems,
filter_vals, 0, NULL, NULL);
if( err < 0) TEST_ERROR;
/* The compression level should be 8, the value we passed in */
if(filter_vals[0] != 8) TEST_ERROR;
/* Clean up */
err = H5Pclose(plist_id);
if( err < 0) TEST_ERROR;
err = H5Dclose(dset_id);
if( err < 0) TEST_ERROR;
/* Create a new table without compression. */
table = H5PTcreate_fl(fid1, "Uncompressed Dataset", part_t, (hsize_t)80, -1);
if(table < 0) TEST_ERROR;
/* Close the packet table */
err = H5PTclose(table);
if( err < 0) TEST_ERROR;
/* Open the packet table as a regular dataset and make sure that the
* compression filter is not set.
*/
dset_id = H5Dopen2(fid1, "Uncompressed Dataset", H5P_DEFAULT);
if( dset_id < 0) TEST_ERROR;
plist_id = H5Dget_create_plist(dset_id);
if( plist_id < 0) TEST_ERROR;
H5E_BEGIN_TRY {
err = H5Pget_filter_by_id2(plist_id, H5Z_FILTER_DEFLATE, NULL, &num_elems,
filter_vals, 0, NULL, NULL);
if( err >= 0) TEST_ERROR;
} H5E_END_TRY
/* Clean up */
err = H5Pclose(plist_id);
if( err < 0) TEST_ERROR;
err = H5Dclose(dset_id);
if( err < 0) TEST_ERROR;
/* Close the datatype and the file */
err = H5Tclose(part_t);
if( err < 0) TEST_ERROR;
err = H5Fclose(fid1);
if( err < 0) TEST_ERROR;
PASSED();
return 0;
error:
H5E_BEGIN_TRY {
H5Pclose(plist_id);
H5Dclose(dset_id);
H5Tclose(part_t);
H5PTclose(table);
H5Fclose(fid1);
} H5E_END_TRY
H5_FAILED();
return -1;
}
