We are pleased to announce the release of version 1.1.0 of the Community
Codec Repository (CCR) C/Fortran libraries. Get the new release here:
https://github.com/ccr/ccr/releases/download/v1_1_0/ccr-1.1.0.tar.gz. For
full documentation of the CCR see https://ccr.github.io/ccr/.
The CCR C and Fortran libraries provide additional compression and other
processing for netCDF data files (for netCDF/HDF5 files only).
The CCR uses the HDF5 filter mechanism to add additional compression and
other filters to the netCDF library. This allows netCDF users to read and
write files with compression libraries which may be faster, better, or in
some other way more suitable than the built in netCDF compression methods
(zlib and optionally szip).
Some CCR filters use additional third-party libraries which must be
installed before CCR is built. See the Installation Instructions for more
information.
This release of the CCR supports the following filters:
FilterPurposeThird-Party Library
bzip2 bzip2 compression/decompression https://www.sourceware.org/bzip2/
BitGroom Bit Grooming none
Zstandard Zstandard compression/decompression
https://facebook.github.io/zstd/New This Release
- Added BitGroom filter. (See #53 <https://github.com/ccr/ccr/issues/53>
).
- Added Zstandard compression/decompression filter. (See #29
<https://github.com/ccr/ccr/issues/29>).
- Documentation improvements. (See #34
<https://github.com/ccr/ccr/issues/34>, #35
<https://github.com/ccr/ccr/issues/35>).
- Add GitHub workflow testing for continuous integration. (See #24
<https://github.com/ccr/ccr/issues/24>, #36
<https://github.com/ccr/ccr/issues/36>).
- Better handling in build system for user options like --disable-bzip2.
(See #38 <https://github.com/ccr/ccr/issues/38>).
- Removed the LZ4 filter, which was not performing correctly. (See #20
<https://github.com/ccr/ccr/issues/20>).
For a full set of issues resolved in this release, see
https://github.com/ccr/ccr/projects/1.
