Module fixed_array 

Fixed Array (FA) chunk index structures for HDF5.

Implements the on-disk format for the fixed array used to index chunked datasets where no dimension is unlimited (all dimensions are fixed-size).

Structures:

• Header (FAHD): metadata about the fixed array
• Data Block (FADB): holds chunk addresses (or filtered chunk entries)

Structs

FixedArrayChunkElement

A single element in a fixed array for unfiltered chunks. Each element is simply a chunk address (sizeof_addr bytes).

FixedArrayDataBlock

Fixed array data block.

FixedArrayFilteredChunkElement

A single element in a fixed array for filtered chunks.

FixedArrayHeader

Fixed array header.

FixedArrayPagedPrefix

Parsed prefix of a paged fixed array data block.

Constants

FADB_SIGNATURE

Signature for the fixed array data block.

FAHD_SIGNATURE

Signature for the fixed array header.

FA_CLIENT_CHUNK

Client ID for unfiltered chunks.

FA_CLIENT_FILT_CHUNK

Client ID for filtered chunks.

FA_MAX_DBLK_PAGE_NELMTS_BITS

Default log2(max elements per data block page).

FA_VERSION

Fixed array version.

Functions

decode_filtered_page

Decode the filtered chunk entries contained in a single data block page.

decode_unfiltered_page

Decode the unfiltered chunk addresses contained in a single data block page.

encode_filtered_page

Encode a single filtered data block page.

encode_unfiltered_page

Encode a single unfiltered data block page.