Blosc filter for HDF5

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This is an example of filter for HDF5 that uses the Blosc compressor.

You need to be a bit careful before using this filter because you should not activate the shuffle right in HDF5, but rather from Blosc itself. This is because Blosc uses an SIMD shuffle internally which is much faster.

Using the Blosc filter from HDF5

In order to register Blosc into your HDF5 application, you only need to call a function in blosc_filter.h, with the following signature:

int register_blosc(char **version, char **date)

Calling this will register the filter with the HDF5 library and will return info about the Blosc release in **version and **date char pointers.

A non-negative return value indicates success. If the registration fails, an error is pushed onto the current error stack and a negative value is returned.

An example C program ('src/example.c') is included which demonstrates the proper use of the filter.

This filter has been tested against HDF5 versions 1.6.5 through 1.8.10. It is released under the MIT license (see LICENSE.txt for details).

Compiling

The filter consists of a single 'src/blosc_filter.c' source file and 'src/blosc_filter.h' header, which will need the Blosc library installed to work.

As an HDF5 plugin

Also, you can use blosc as an HDF5 plugin; see 'src/blosc_pluing.c' for details.

Acknowledgments

See THANKS.rst.

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Enjoy data!