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docs: plugin filters and the filter registry

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CHANGELOG (Unreleased): LZF, bitshuffle, bzip2 and Blosc read and write
in pure Rust, their features, the ChunkOptions::plugin field (breaking for
struct-literal construction), the filter registry, the named
UnsupportedFilter message, and Blosc2/ZFP still unimplemented.
README: the clawhdf5-format feature table gains lzf (default),
bitshuffle, bzip2, blosc and plugin-filters, with how to write them and
what is not implemented; no speed claims. docs/known-issues.md: the audit's
filter gap is marked fixed 2026-09-26 for LZF/bitshuffle/bzip2/Blosc,
Blosc2 and ZFP still open. CLAUDE.md: the clawhdf5-filters row no longer
says "No Blosc". clawhdf5-format's crate docs list the new features.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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osobh
2026-09-26 00:14:47 -05:00
co-authored by Claude Opus 5.5
parent 056092b082
commit e01160299a
5 changed files with 64 additions and 3 deletions
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CLAUDE.md
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@@ -11,7 +11,7 @@ Cargo workspace with 16 crates under `crates/` (plus `libaec-sys`, an internal F
|-------|------|
| `clawhdf5-format` | HDF5 binary spec parser (superblock, B-tree, heap) — also holds shared type definitions and physical constants |
| `clawhdf5-io` | Read/write implementation |
| `clawhdf5-filters` | Deflate backends (zlib-rs, zlib-ng, Apple Compression); the HDF5 filter pipeline and the other codecs (LZ4, Zstd, SZIP, N-Bit, scale-offset, pcodec) live in `clawhdf5-format`. No Blosc. |
| `clawhdf5-filters` | Deflate backends (zlib-rs, zlib-ng, Apple Compression); the HDF5 filter pipeline, the filter registry (`clawhdf5_format::filter_registry`) and the other codecs (LZ4, Zstd, SZIP, N-Bit, scale-offset, pcodec, and the pure-Rust plugin filters LZF, bitshuffle, bzip2, Blosc 1) live in `clawhdf5-format`. No Blosc2 or ZFP. |
| `clawhdf5-derive` | Proc-macro derive for HDF5-serializable structs |
| `clawhdf5` | Main facade crate |
| `clawhdf5-netcdf4` | NetCDF-4 compatibility layer |