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Data Structures
struct	NCPluginList

Macros
#define	H5_SZIP_ALL_MASKS (H5_SZIP_CHIP_OPTION_MASK\|H5_SZIP_EC_OPTION_MASK\|H5_SZIP_NN_OPTION_MASK)
#define	H5_SZIP_ALLOW_K13_OPTION_MASK 1
#define	H5_SZIP_CHIP_OPTION_MASK 2
#define	H5_SZIP_EC_OPTION_MASK 4
#define	H5_SZIP_LSB_OPTION_MASK 8
#define	H5_SZIP_MAX_PIXELS_PER_BLOCK 32
#define	H5_SZIP_MSB_OPTION_MASK 16
#define	H5_SZIP_NN_OPTION_MASK 32
#define	H5_SZIP_RAW_OPTION_MASK 128
#define	H5Z_FILTER_BLOSC 32001
#define	H5Z_FILTER_BZIP2 307
#define	H5Z_FILTER_DEFLATE 1
#define	H5Z_FILTER_FLETCHER32 3
#define	H5Z_FILTER_SHUFFLE 2
#define	H5Z_FILTER_SZIP 4
#define	H5Z_FILTER_ZSTD 32015
#define	NC_MAX_PIXELS_PER_BLOCK 32
	The maximum allowed setting for pixels_per_block when calling nc_def_var_szip().
#define	NC_SZIP_EC 4
	Selects entropy coding method for szip.
#define	NC_SZIP_NN 32
	Selects nearest neighbor coding method for szip.

Typedefs
typedef struct NCPluginList	NCPluginList

Enumerations
enum	BLOSC_SHUFFLE { BLOSC_NOSHUFFLE =0 , BLOSC_SHUFFLE =1 , BLOSC_BITSHUFFLE =2 }
enum	BLOSC_SUBCOMPRESSORS { BLOSC_LZ =0 , BLOSC_LZ4 =1 , BLOSC_LZ4HC =2 , BLOSC_SNAPPY =3 , BLOSC_ZLIB =4 , BLOSC_ZSTD =5 }

Functions
EXTERNL int	nc_def_var_blosc (int ncid, int varid, unsigned subcompressor, unsigned level, unsigned blocksize, unsigned addshuffle)
	Turn on blosc for a variable.
EXTERNL int	nc_def_var_bzip2 (int ncid, int varid, int level)
	Turn on bzip2 compression for a variable.
EXTERNL int	nc_def_var_filter (int ncid, int varid, unsigned int id, size_t nparams, const unsigned int *params)
	Define a new variable filter Assumes HDF5 format using unsigned ints.
EXTERNL int	nc_def_var_zstandard (int ncid, int varid, int level)
	Turn on Zstandard compression for a variable.
EXTERNL int	nc_filter_path_query (int id)
EXTERNL int	nc_inq_filter_avail (int ncid, unsigned id)
	Test if filter is available.
EXTERNL int	nc_inq_var_blosc (int ncid, int varid, int hasfilterp, unsigned subcompressorp, unsigned levelp, unsigned blocksizep, unsigned *addshufflep)
	Learn whether Blosc compression is on for a variable, and, if so, the settings.
EXTERNL int	nc_inq_var_bzip2 (int ncid, int varid, int hasfilterp, int levelp)
	Learn whether bzip2 compression is on for a variable, and, if so, the level setting.
EXTERNL int	nc_inq_var_filter (int ncid, int varid, unsigned int idp, size_t nparams, unsigned int *params)
	Find the first filter (if any) associated with a variable.
EXTERNL int	nc_inq_var_filter_ids (int ncid, int varid, size_t nfilters, unsigned int filterids)
	Find the set of filters (if any) associated with a variable.
EXTERNL int	nc_inq_var_filter_info (int ncid, int varid, unsigned int id, size_t nparams, unsigned int params)
	Find the param info about filter (if any) associated with a variable and with specified id.
EXTERNL int	nc_inq_var_zstandard (int ncid, int varid, int hasfilterp, int levelp)
	Learn whether Zstandard compression is on for a variable, and, if so, the level setting.
EXTERNL int	nc_plugin_path_get (NCPluginList *dirs)
	Return the current sequence of directories in the internal global plugin path list.
EXTERNL int	nc_plugin_path_ndirs (size_t *ndirsp)
	Return the length of the current sequence of directories in the internal global plugin path list.
EXTERNL int	nc_plugin_path_set (NCPluginList *dirs)
	Empty the current internal path sequence and replace with the sequence of directories argument.

Macro Definition Documentation

◆ H5_SZIP_ALL_MASKS

#define H5_SZIP_ALL_MASKS (H5_SZIP_CHIP_OPTION_MASK|H5_SZIP_EC_OPTION_MASK|H5_SZIP_NN_OPTION_MASK)

Definition at line 40 of file netcdf_filter.h.

◆ H5_SZIP_ALLOW_K13_OPTION_MASK

#define H5_SZIP_ALLOW_K13_OPTION_MASK 1

Definition at line 27 of file netcdf_filter.h.

◆ H5_SZIP_CHIP_OPTION_MASK

#define H5_SZIP_CHIP_OPTION_MASK 2

Definition at line 28 of file netcdf_filter.h.

◆ H5_SZIP_EC_OPTION_MASK

#define H5_SZIP_EC_OPTION_MASK 4

Definition at line 29 of file netcdf_filter.h.

◆ H5_SZIP_LSB_OPTION_MASK

#define H5_SZIP_LSB_OPTION_MASK 8

Definition at line 30 of file netcdf_filter.h.

◆ H5_SZIP_MAX_PIXELS_PER_BLOCK

#define H5_SZIP_MAX_PIXELS_PER_BLOCK 32

Definition at line 33 of file netcdf_filter.h.

◆ H5_SZIP_MSB_OPTION_MASK

#define H5_SZIP_MSB_OPTION_MASK 16

Definition at line 31 of file netcdf_filter.h.

◆ H5_SZIP_NN_OPTION_MASK

#define H5_SZIP_NN_OPTION_MASK 32

Definition at line 32 of file netcdf_filter.h.

◆ H5_SZIP_RAW_OPTION_MASK

#define H5_SZIP_RAW_OPTION_MASK 128

Definition at line 34 of file netcdf_filter.h.

◆ H5Z_FILTER_BLOSC

#define H5Z_FILTER_BLOSC 32001

Definition at line 53 of file netcdf_filter.h.

◆ H5Z_FILTER_BZIP2

#define H5Z_FILTER_BZIP2 307

Definition at line 50 of file netcdf_filter.h.

◆ H5Z_FILTER_DEFLATE

#define H5Z_FILTER_DEFLATE 1

Definition at line 20 of file netcdf_filter.h.

◆ H5Z_FILTER_FLETCHER32

#define H5Z_FILTER_FLETCHER32 3

Definition at line 22 of file netcdf_filter.h.

◆ H5Z_FILTER_SHUFFLE

#define H5Z_FILTER_SHUFFLE 2

Definition at line 21 of file netcdf_filter.h.

◆ H5Z_FILTER_SZIP

#define H5Z_FILTER_SZIP 4

Definition at line 26 of file netcdf_filter.h.

◆ H5Z_FILTER_ZSTD

#define H5Z_FILTER_ZSTD 32015

Definition at line 47 of file netcdf_filter.h.

◆ NC_MAX_PIXELS_PER_BLOCK

#define NC_MAX_PIXELS_PER_BLOCK 32

The maximum allowed setting for pixels_per_block when calling nc_def_var_szip().

Definition at line 43 of file netcdf_filter.h.

◆ NC_SZIP_EC

#define NC_SZIP_EC 4

Selects entropy coding method for szip.

Definition at line 36 of file netcdf_filter.h.

◆ NC_SZIP_NN

#define NC_SZIP_NN 32

Selects nearest neighbor coding method for szip.

Definition at line 37 of file netcdf_filter.h.

Enumeration Type Documentation

◆ BLOSC_SHUFFLE

enum BLOSC_SHUFFLE

Definition at line 56 of file netcdf_filter.h.

◆ BLOSC_SUBCOMPRESSORS

enum BLOSC_SUBCOMPRESSORS

Definition at line 65 of file netcdf_filter.h.

Function Documentation

◆ nc_def_var_filter()

EXTERNL int nc_def_var_filter	(	int	ncid,
		int	varid,
		unsigned int	id,
		size_t	nparams,
		const unsigned int *	params )

Define a new variable filter Assumes HDF5 format using unsigned ints.

Only variables with chunked storage can use filters.

Parameters

ncid	File and group ID.
varid	Variable ID.
id	Filter ID.
nparams	Number of filter parameters.
params	Filter parameters.

Returns: NC_NOERR No error.; NC_EINVAL Variable must be chunked.; NC_EBADID Bad ID.

Author: Dennis Heimbigner

Definition at line 129 of file dfilter.c.

◆ nc_inq_filter_avail()

EXTERNL int nc_inq_filter_avail	(	int	ncid,
		unsigned	id )

Test if filter is available.

Would prefer returning a list of all available filters, but HDF5 does not support that capability.

Parameters

ncid	ID of file for which filter list is desired
id	filter id of interest

Returns: NC_NOERR if the filter is available; NC_EBADID if ncid is invalid; NC_ENOFILTER if filter is not available.

Author: Dennis Heimbigner

Definition at line 212 of file dfilter.c.

◆ nc_plugin_path_get()

EXTERNL int nc_plugin_path_get ( NCPluginList * dirs )

Return the current sequence of directories in the internal global plugin path list.

Since this function does not modify the plugin path, it can be called at any time.

Parameters

dirs	pointer to an NCPluginList object

Returns: NC_NOERR | NC_EXXX

Author: Dennis Heimbigner

WARNING: if dirs->dirs is NULL, then space for the directory vector will be allocated. If not NULL, then the specified space will be overwritten with the vector.

Author: : Dennis Heimbigner

◆ nc_plugin_path_ndirs()

EXTERNL int nc_plugin_path_ndirs ( size_t * ndirsp )

Return the length of the current sequence of directories in the internal global plugin path list.

Parameters

ndirsp length is returned here

Returns: NC_NOERR | NC_EXXX

Author: Dennis Heimbigner

◆ nc_plugin_path_set()

EXTERNL int nc_plugin_path_set ( NCPluginList * dirs )

Empty the current internal path sequence and replace with the sequence of directories argument.

Using a paths argument of NULL or npaths argument of 0 will clear the set of plugin paths.

Parameters

dirs	pointer to an NCPluginList object containing the number and vector of directory paths

Returns: NC_NOERR | NC_EXXX

Author: Dennis Heimbigner

Data Structures

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

◆ H5_SZIP_ALL_MASKS

◆ H5_SZIP_ALLOW_K13_OPTION_MASK

◆ H5_SZIP_CHIP_OPTION_MASK

◆ H5_SZIP_EC_OPTION_MASK

◆ H5_SZIP_LSB_OPTION_MASK

◆ H5_SZIP_MAX_PIXELS_PER_BLOCK

◆ H5_SZIP_MSB_OPTION_MASK

◆ H5_SZIP_NN_OPTION_MASK

◆ H5_SZIP_RAW_OPTION_MASK

◆ H5Z_FILTER_BLOSC

◆ H5Z_FILTER_BZIP2

◆ H5Z_FILTER_DEFLATE

◆ H5Z_FILTER_FLETCHER32

◆ H5Z_FILTER_SHUFFLE

◆ H5Z_FILTER_SZIP

◆ H5Z_FILTER_ZSTD

◆ NC_MAX_PIXELS_PER_BLOCK

◆ NC_SZIP_EC

◆ NC_SZIP_NN

Enumeration Type Documentation

◆ BLOSC_SHUFFLE

◆ BLOSC_SUBCOMPRESSORS

Function Documentation

◆ nc_def_var_filter()

◆ nc_inq_filter_avail()

◆ nc_plugin_path_get()

◆ nc_plugin_path_ndirs()

◆ nc_plugin_path_set()