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re: https://github.com/Unidata/netcdf-c/issues/1836 Revert the internal filter code to simplify it. From the user's point of view, the only visible changes should be: 1. The functions that convert text to filter specs have had their signature reverted and have been moved to netcdf_aux.h 2. Some filter API functions now return NC_ENOFILTER when inquiry is made about some filter. Internally,the dispatch table has been modified to get rid of the filter_actions entry and associated complex structures. It has been replaced with inq_var_filter_ids and inq_var_filter_info entries and the dispatch table version has been bumped to 3. Corresponding NOOP and NOTNC4 functions were added to libdispatch/dnotnc4.c. Also, the filter_action entries in dispatch tables were replaced for all dispatch code bases (HDF5, DAP2, etc). This should only impact UDF users. In the process, it became clear that the form of the filters field in NC_VAR_INFO_T was format dependent, so I converted it to be of type void* and pushed its management into the various dispatch code bases. Specifically libhdf5 and libnczarr now manage the filters field in their own way. The auxilliary functions for parsing textual filter specifications were moved to netcdf_aux.h and were renamed to the following: * ncaux_h5filterspec_parse * ncaux_h5filterspec_parselist * ncaux_h5filterspec_free * ncaux_h5filter_fix8 Misc. Other Changes: 1. Document NUG/filters.md updated to reflect the changes above. 2. All the old data types (structs and enums) used by filter_actions actions were deleted. The exception is the NC_H5_Filterspec because it is needed by ncaux_h5filterspec_parselist. 3. Clientside filters were removed -- another enhancement for which no-one ever asked. 4. The ability to remove filters was itself removed. 5. Some functionality needed by nczarr was moved from libhdf5 to libsrc4 e.g. nc4_find_default_chunksizes 6. All the filterx code was removed 7. ncfilter.h and nc4filter.c no longer used Misc. Unrelated Changes: 1. The nczarr_test makefile clean was leaving some directories; so add clean-local to take care of them.
38 lines
1002 B
C
38 lines
1002 B
C
#ifndef H5MISC_H
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#define H5MISC_H
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#ifdef _MSC_VER
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#ifdef DLL_EXPORT /* define when building the library */
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#define DECLSPEC __declspec(dllexport)
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#else
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#define DECLSPEC __declspec(dllimport)
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#endif
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#else
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#define DECLSPEC extern
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#endif
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/* use an integer greater than 256 to be id of the registered filter. */
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#define H5Z_FILTER_TEST 32768
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/* Define the test cases */
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typedef enum H5testcase {
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TC_NONE = 0,
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TC_ENDIAN = 1,
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TC_ODDSIZE = 2,
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} H5testcase;
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/* declare the hdf5 interface */
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DECLSPEC H5PL_type_t H5PLget_plugin_type(void);
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DECLSPEC const void* H5PLget_plugin_info(void);
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DECLSPEC const H5Z_class2_t H5Z_TEST[1];
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/* Declare filter specific functions */
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DECLSPEC htri_t H5Z_test_can_apply(hid_t dcpl_id, hid_t type_id, hid_t space_id);
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DECLSPEC size_t H5Z_filter_test(unsigned flags,size_t cd_nelmts,const unsigned cd_values[],
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size_t nbytes,size_t *buf_size,void**buf);
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DECLSPEC void NC_h5filterspec_fix8(void* mem0, int decode);
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#endif /*H5MISC_H*/
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