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  • Bijective BWT (7 Comments)

    David Scott has written a bijective BWT transform, which brings all the advantages of bijectiveness to BWT based compressors. Among other things, making BWT more suitable for compression-before-encryption and also give (slightly) better compression.

  • Asymmetric Binary System (113 Comments)

    Jarek Duda’s “Asymmetric Binary System” promises to be an alternate to arithmetic coding, having all the advantages, but being much simpler. Matt has coded a PAQ based compressor using ABS for back-end encoding. Update: Andrew Polar has written an alternate implementation of ABS.

  • Precomp: More Compression for your Compressed Files (3 Comments)

    So many of today’s files are already compressed (using old, outdated algorithms) that newer algorithms don’t even get a chance to touch them. Christian Schneider’s Precomp comes to rescue by undoing the harm.

  • On2 Technologies is Hiring

    There aren’t too many companies working on cutting edge codecs, and of those few this one is hiring. Best of luck.

  • China’s AVS Specifications Available (2 Comments)

    Its old news that China has developed their own Advanced Video Standard to avoid high licensing fees. English translation of the standard is now available, along with the IPR policy. Finally something technical that you can get your hands on to feed your appetite.

Zlib question in comp.compression

Posted by Mark Nelson on 22nd June 2005 | Permanent Link

A poster in comp.compression wondered “where can I find C++ wrappers for Zlib?” A reasonable question, (although not very hard to answer!) Zlib maven Mark Adler answered with a pointer to the contributed software section of the zlib distribution, available on the zlib distribution site. I might also point out that I had an article called zlib - Looking the Gift Code in the Mouth back in the day that has a reasonably good wrapper class.

This definitely comes under the category of a FAQ. Fortunately, zlib is is simplicity personified, so it’s easy to create a good wrapper. So easy that everyone does it!

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This entry was posted on Wednesday, June 22nd, 2005 at 5:03 am by Mark Nelson. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.