diff options
Diffstat (limited to 'src/H5Zpublic.h')
| -rw-r--r-- | src/H5Zpublic.h | 145 |
1 files changed, 91 insertions, 54 deletions
diff --git a/src/H5Zpublic.h b/src/H5Zpublic.h index 4c9b006..90277cf 100644 --- a/src/H5Zpublic.h +++ b/src/H5Zpublic.h @@ -230,16 +230,18 @@ typedef enum H5Z_EDC_t { * Return values for filter callback function */ typedef enum H5Z_cb_return_t { - H5Z_CB_ERROR = -1, - H5Z_CB_FAIL = 0, /**< I/O should fail if filter fails. */ - H5Z_CB_CONT = 1, /**< I/O continues if filter fails. */ - H5Z_CB_NO = 2 + H5Z_CB_ERROR = -1, /**< error value */ + H5Z_CB_FAIL = 0, /**< I/O should fail if filter fails. */ + H5Z_CB_CONT = 1, /**< I/O continues if filter fails. */ + H5Z_CB_NO = 2 /**< sentinel */ } H5Z_cb_return_t; +//! <!-- [H5Z_filter_func_t_snip] --> /** * Filter callback function definition */ typedef H5Z_cb_return_t (*H5Z_filter_func_t)(H5Z_filter_t filter, void *buf, size_t buf_size, void *op_data); +//! <!-- [H5Z_filter_func_t_snip] --> /** * Structure for filter callback property @@ -254,58 +256,93 @@ extern "C" { #endif /** - * \details Before a dataset gets created, the \c can_apply callbacks for any - * filters used in the dataset creation property list are called with - * the dataset's dataset creation property list, the dataset's - * datatype and a dataspace describing a chunk (for chunked dataset - * storage). + * \brief This callback determines if a filter can be applied to the dataset + * with the characteristics provided * - * The \c can_apply callback must determine if the combination of the - * dataset creation property list setting, the datatype and the - * dataspace represent a valid combination to apply this filter to. - * For example, some cases of invalid combinations may involve the - * filter not operating correctly on certain datatypes (or certain - * datatype sizes), or certain sizes of the chunk dataspace. + * \dcpl_id + * \type_id + * \space_id * - * The \c can_apply callback can be the NULL pointer, in which case, - * the library will assume that it can apply to any combination of - * dataset creation property list values, datatypes and dataspaces. + * \return \htri_t * - * The \c can_apply callback returns positive a valid combination, - * zero for an invalid combination and negative for an error. - */ -//! [H5Z_can_apply_func_t_snip] + * \details Before a dataset gets created, the \ref H5Z_can_apply_func_t + * callbacks for any filters used in the dataset creation property list + * are called with the dataset's dataset creation property list, the + * dataset's datatype and a dataspace describing a chunk (for chunked + * dataset storage). + * + * The \ref H5Z_can_apply_func_t callback must determine if the + * combination of the dataset creation property list setting, the + * datatype and the dataspace represent a valid combination to apply + * this filter to. For example, some cases of invalid combinations may + * involve the filter not operating correctly on certain datatypes (or + * certain datatype sizes), or certain sizes of the chunk dataspace. + * + * The \ref H5Z_can_apply_func_t callback can be the NULL pointer, in + * which case, the library will assume that it can apply to any + * combination of dataset creation property list values, datatypes and + * dataspaces. + * + * The \ref H5Z_can_apply_func_t callback returns positive a valid + * combination, zero for an invalid combination and negative for an + * error. + */ +//! <!-- [H5Z_can_apply_func_t_snip] --> typedef htri_t (*H5Z_can_apply_func_t)(hid_t dcpl_id, hid_t type_id, hid_t space_id); -//! [H5Z_can_apply_func_t_snip] -/** - * \details After the "can_apply" callbacks are checked for new datasets, the - * \c set_local callbacks for any filters used in the dataset creation - * property list are called. These callbacks receive the dataset's - * private copy of the dataset creation property list passed in to - * H5Dcreate() (i.e. not the actual property list passed in to - * H5Dcreate()) and the datatype ID passed in to H5Dcreate() (which is - * not copied and should not be modified) and a dataspace describing - * the chunk (for chunked dataset storage) (which should also not be - * modified). - * - * The \c set_local callback must set any parameters that are specific - * to this dataset, based on the combination of the dataset creation - * property list values, the datatype and the dataspace. For example, - * some filters perform different actions based on different datatypes - * (or datatype sizes) or different number of dimensions or dataspace - * sizes. +//! <!-- [H5Z_can_apply_func_t_snip] --> +/** + * \brief The filter operation callback function, defining a filter's operation + * on data * - * The \c set_local callback can be the NULL pointer, in which case, - * the library will assume that there are no dataset-specific settings - * for this filter. + * \dcpl_id + * \type_id + * \space_id * - * The \c set_local callback must return non-negative on success and - * negative for an error. - */ -//! [H5Z_set_local_func_t_snip] + * \return \herr_t + * + * \details After the \ref H5Z_can_apply_func_t callbacks are checked for new + * datasets, the \ref H5Z_set_local_func_t callbacks for any filters + * used in the dataset creation property list are called. These + * callbacks receive the dataset's private copy of the dataset creation + * property list passed in to H5Dcreate() (i.e. not the actual property + * list passed in to H5Dcreate()) and the datatype ID passed in to + * H5Dcreate() (which is not copied and should not be modified) and a + * dataspace describing the chunk (for chunked dataset storage) (which + * should also not be modified). + * + * The \ref H5Z_set_local_func_t callback must set any parameters that + * are specific to this dataset, based on the combination of the + * dataset creation property list values, the datatype and the + * dataspace. For example, some filters perform different actions based + * on different datatypes (or datatype sizes) or different number of + * dimensions or dataspace sizes. + * + * The \ref H5Z_set_local_func_t callback can be the NULL pointer, in + * which case, the library will assume that there are no + * dataset-specific settings for this filter. + * + * The \ref H5Z_set_local_func_t callback must return non-negative on + * success and negative for an error. + */ +//! <!-- [H5Z_set_local_func_t_snip] --> typedef herr_t (*H5Z_set_local_func_t)(hid_t dcpl_id, hid_t type_id, hid_t space_id); -//! [H5Z_set_local_func_t_snip] +//! <!-- [H5Z_set_local_func_t_snip] --> + /** + * \brief The filter operation callback function, defining a filter's operation + * on data + * + * \param[in] flags Bit vector specifying certain general properties of the filter + * \param[in] cd_nelmts Number of elements in \p cd_values + * \param[in] cd_values Auxiliary data for the filter + * \param[in] nbytes The number of valid bytes in \p buf to be filtered + * \param[in,out] buf_size The size of \p buf + * \param[in,out] buf The filter buffer + * + * \return Returns the number of valid bytes of data contained in \p buf. In the + * case of failure, the return value is 0 (zero) and all pointer + * arguments are left unchanged. + * * \details A filter gets definition flags and invocation flags (defined * above), the client data array and size defined when the filter was * added to the pipeline, the size in bytes of the data on which to @@ -321,15 +358,15 @@ typedef herr_t (*H5Z_set_local_func_t)(hid_t dcpl_id, hid_t type_id, hid_t space * output buffer. If an error occurs then the function should return * zero and leave all pointer arguments unchanged. */ -//! [H5Z_func_t_snip] +//! <!-- [H5Z_func_t_snip] --> typedef size_t (*H5Z_func_t)(unsigned int flags, size_t cd_nelmts, const unsigned int cd_values[], size_t nbytes, size_t *buf_size, void **buf); -//! [H5Z_func_t_snip] +//! <!-- [H5Z_func_t_snip] --> /** * The filter table maps filter identification numbers to structs that * contain a pointers to the filter function and timing statistics. */ -//! [H5Z_class2_t_snip] +//! <!-- [H5Z_class2_t_snip] --> typedef struct H5Z_class2_t { int version; /**< Version number of the H5Z_class_t struct */ H5Z_filter_t id; /**< Filter ID number */ @@ -340,7 +377,7 @@ typedef struct H5Z_class2_t { H5Z_set_local_func_t set_local; /**< The "set local" callback for a filter */ H5Z_func_t filter; /**< The actual filter function */ } H5Z_class2_t; -//! [H5Z_class2_t_snip] +//! <!-- [H5Z_class2_t_snip] --> /** * \ingroup H5Z @@ -635,7 +672,7 @@ H5_DLL herr_t H5Zget_filter_info(H5Z_filter_t filter, unsigned int *filter_confi * The filter table maps filter identification numbers to structs that * contain a pointers to the filter function and timing statistics. */ -//! [H5Z_class1_t_snip] +//! <!-- [H5Z_class1_t_snip] --> typedef struct H5Z_class1_t { H5Z_filter_t id; /**< Filter ID number */ const char * name; /**< Comment for debugging */ @@ -643,7 +680,7 @@ typedef struct H5Z_class1_t { H5Z_set_local_func_t set_local; /**< The "set local" callback for a filter */ H5Z_func_t filter; /**< The actual filter function */ } H5Z_class1_t; -//! [H5Z_class1_t_snip] +//! <!-- [H5Z_class1_t_snip] --> #endif /* H5_NO_DEPRECATED_SYMBOLS */ |