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author | Gerd Heber <gheber@hdfgroup.org> | 2021-09-01 21:09:27 (GMT) |
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committer | GitHub <noreply@github.com> | 2021-09-01 21:09:27 (GMT) |
commit | cf25524474a4012a70cc2bdb6eaddc402b5ea136 (patch) | |
tree | cf7e30d16a602e5146500158696d429a146cb2c2 /src/H5Zmodule.h | |
parent | 01fe2549a36d7635b2cbe6f6a57cbcce29c1335b (diff) | |
download | hdf5-cf25524474a4012a70cc2bdb6eaddc402b5ea136.zip hdf5-cf25524474a4012a70cc2bdb6eaddc402b5ea136.tar.gz hdf5-cf25524474a4012a70cc2bdb6eaddc402b5ea136.tar.bz2 |
A batch of life-cycle examples for different modules (#654)
* Create a tag file for permalinks.
* Added DOXYGEN_TAG_FILE.
* Added Doxygen life-cycle examples for different modules.
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Diffstat (limited to 'src/H5Zmodule.h')
-rw-r--r-- | src/H5Zmodule.h | 109 |
1 files changed, 66 insertions, 43 deletions
diff --git a/src/H5Zmodule.h b/src/H5Zmodule.h index 76a2380..9312b72 100644 --- a/src/H5Zmodule.h +++ b/src/H5Zmodule.h @@ -29,57 +29,80 @@ #define H5_MY_PKG_ERR H5E_PLINE #define H5_MY_PKG_INIT YES -/** - * \defgroup H5Z H5Z +/**\defgroup H5Z H5Z * + * Use the functions in this module to manage HDF5 filters. * - * \brief Filter and Compression Interface + * User-defined filters are created by registering a filter descriptor of + * type #H5Z_class_t with the library. * - * \details The functions in this module let you configure filters that process - * data during I/O operation. + * Available filters can be read or examined at runtime. * - * HDF5 supports a filter pipeline that provides the capability for - * standard and customized raw data processing during I/O operations. - * HDF5 is distributed with a small set of standard filters such as - * compression (gzip, SZIP, and a shuffling algorithm) and error - * checking (Fletcher32 checksum). For further flexibility, the - * library allows a user application to extend the pipeline through - * the creation and registration of customized filters. + * It is conceivable that filters are stateful and that that state be + * updated at runtime. * - * The flexibility of the filter pipeline implementation enables the - * definition of additional filters by a user application. A filter - * \li is associated with a dataset when the dataset is created, - * \li can be used only with chunked data (i.e., datasets stored in - * the #H5D_CHUNKED storage layout), and - * \li is applied independently to each chunk of the dataset. + * Filters are deleted by unregistering. * - * The HDF5 library does not support filters for contiguous datasets - * because of the difficulty of implementing random access for partial - * I/O. Compact dataset filters are not supported because it would not - * produce significant results. + * <table> + * <tr><th>Create</th><th>Read</th></tr> + * <tr valign="top"> + * <td> + * \snippet{lineno} H5Z_examples.c filter + * \snippet{lineno} H5Z_examples.c create + * </td> + * <td> + * \snippet{lineno} H5Z_examples.c read + * </td> + * </tr> + * <tr><th>Update</th><th>Delete</th></tr> + * <tr valign="top"> + * <td> + * \snippet{lineno} H5Z_examples.c update + * </td> + * <td> + * \snippet{lineno} H5Z_examples.c delete + * </tr> + * </table> * - * Filter identifiers for the filters distributed with the HDF5 - * Library are as follows: - * <table> - * <tr><td>#H5Z_FILTER_DEFLATE</td><td>The gzip compression, or - * deflation, filter</td></tr> - * <tr><td>#H5Z_FILTER_SZIP</td><td>The SZIP compression - * filter</td></tr> - * <tr><td>#H5Z_FILTER_NBIT</td><td>The N-bit compression - * filter</td></tr> - * <tr><td>#H5Z_FILTER_SCALEOFFSET</td><td>The scale-offset - * compression filter</td></tr> - * <tr><td>#H5Z_FILTER_SHUFFLE</td><td>The shuffle algorithm - * filter</td></tr> - * <tr><td>#H5Z_FILTER_FLETCHER32</td><td>The Fletcher32 checksum, - * or error checking, filter</td></tr> - * </table> - * Custom filters that have been registered with the library will have - * additional unique identifiers. + * HDF5 supports a filter pipeline that provides the capability for standard and + * customized raw data processing during I/O operations. HDF5 is distributed + * with a small set of standard filters such as compression (gzip, SZIP, and a + * shuffling algorithm) and error checking (Fletcher32 checksum). For further + * flexibility, the library allows a user application to extend the pipeline + * through the creation and registration of customized filters. * - * See \ref_dld_filters for more information on how an HDF5 - * application can apply a filter that is not registered with the HDF5 - * library. + * The flexibility of the filter pipeline implementation enables the definition + * of additional filters by a user application. A filter + * \li is associated with a dataset when the dataset is created, + * \li can be used only with chunked data (i.e., datasets stored in the + * #H5D_CHUNKED storage layout), and + * \li is applied independently to each chunk of the dataset. + * + * The HDF5 library does not support filters for contiguous datasets because of + * the difficulty of implementing random access for partial I/O. Compact dataset + * filters are not supported because it would not produce significant results. + * + * Filter identifiers for the filters distributed with the HDF5 + * Library are as follows: + * <table> + * <tr><td>#H5Z_FILTER_DEFLATE</td><td>The gzip compression, or + * deflation, filter</td></tr> + * <tr><td>#H5Z_FILTER_SZIP</td><td>The SZIP compression + * filter</td></tr> + * <tr><td>#H5Z_FILTER_NBIT</td><td>The N-bit compression + * filter</td></tr> + * <tr><td>#H5Z_FILTER_SCALEOFFSET</td><td>The scale-offset + * compression filter</td></tr> + * <tr><td>#H5Z_FILTER_SHUFFLE</td><td>The shuffle algorithm + * filter</td></tr> + * <tr><td>#H5Z_FILTER_FLETCHER32</td><td>The Fletcher32 checksum, + * or error checking, filter</td></tr> + * </table> + * Custom filters that have been registered with the library will have + * additional unique identifiers. + * + * See \ref_dld_filters for more information on how an HDF5 application can + * apply a filter that is not registered with the HDF5 library. * * \defgroup H5ZPRE Predefined Filters * \ingroup H5Z |