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53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
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/* Copyright 2018-2018 University Corporation for Atmospheric
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Research/Unidata. */
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/**
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* @file This header file containsfilter related macros, types, and prototypes for
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* the filter code in libnczarr. This header should not be included in
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* code outside libnczarr.
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*
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* @author Dennis Heimbigner
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*/
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#ifndef ZFILTER_H
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#define ZFILTER_H
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/* zfilter.c */
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/* Dispatch functions are also in zfilter.c */
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/* Filterlist management */
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/*Mnemonic*/
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#define ENCODING 1
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/* list of environment variables to check for plugin roots */
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#define plugin_env "HDF5_PLUGIN_PATH"
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#define plugin_dir_unix "/usr/local/hdf5/plugin"
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#define plugin_dir_win "%s/hdf5/lib/plugin"
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#define win32_root_env "ALLUSERSPROFILE"
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/*
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Return a NULL terminated vector of pointers to instances of ''NCZ_codec_t''.
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The value returned is actually of type ''NCZ_codec_t**'',
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but is of type ''void*'' to allow for extensions.
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The list of returned items are used to try to provide defaults
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for any HDF5 filters that have no corresponding Codec.
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This is for internal use only.
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*/
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typedef void* (*NCZ_codec_info_defaults_proto)(void);
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/* Opaque */
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struct NCZ_Filter;
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int NCZ_filter_initialize(void);
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int NCZ_filter_finalize(void);
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int NCZ_addfilter(NC_FILE_INFO_T*, NC_VAR_INFO_T* var, unsigned int id, size_t nparams, const unsigned int* params);
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int NCZ_filter_setup(NC_VAR_INFO_T* var);
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int NCZ_filter_freelist(NC_VAR_INFO_T* var);
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int NCZ_codec_freelist(NCZ_VAR_INFO_T* zvar);
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int NCZ_applyfilterchain(const NC_FILE_INFO_T*, NC_VAR_INFO_T*, NClist* chain, size_t insize, void* indata, size_t* outlen, void** outdata, int encode);
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int NCZ_filter_jsonize(const NC_FILE_INFO_T*, const NC_VAR_INFO_T*, struct NCZ_Filter* filter, struct NCjson**);
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int NCZ_filter_build(const NC_FILE_INFO_T*, NC_VAR_INFO_T* var, const NCjson* jfilter);
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int NCZ_codec_attr(const NC_VAR_INFO_T* var, size_t* lenp, void* data);
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#endif /*ZFILTER_H*/
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