A Tuesday 07 September 2010 15:00:10 Kim Hansen escrigué: > Hi pytables-users, > > The lzo algorithm site > > http://www.oberhumer.com/opensource/lzo/ > > does not maintain any lzo binaries for download on Windows > > However, thanks to Francesc Alted, such binaries are available indirectly > as a compression library for use with the pytables filters. > > http://www.pytables.org/moin/FAQ#A.5BWindows.5DCan.27tfindLZObinariesforWin > dows > > I have the need for LZO decompressing bytestrings or streams on a Windows > OS decoupled from HDF5 files. > > I cannot figure out how to make something like Python-LZO 1.08 (last > release in 2002!) work on a windows system as a standalone module (It > would be a very large personal barrier to C compile anything on that OS), > and I was therefore wondering if I could use some kind of internal hook, a > convenience or utility method in a pytables module to do a > > "decompressed_byte_str = lzo.decompress(lzocompressed_byte_str, opts)"?? > > I have spend some time looking around in the pytables Python code, e.g., > the filters module, but did not manage to find anything usefull.
PyTables uses HDF5 machinery for hooking LZO calls, so I had no need to wrap it for Python. But, by using Cython [1], wrapping the next call (the one that I'm using in PyTables, see the complete sources in src/H5Zlzo.c)): status = lzo1x_decompress_safe(*buf, nbytes, outbuf, &out_len, NULL); and linking against the above binary libraries would be pretty simple. [1] http://www.cython.org/ Hope this helps, -- Francesc Alted ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
