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  • Bijective BWT (6 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    So many of today’s files are already compressed (using old, outdated algorithms) that newer algorithms don’t even get a chance to touch them.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.

Yet Another Windows Class Supporting Zip

Posted by Mark Nelson on 28th February 2006 | Permanent Link

Fernando A. Gómez F. decided that the world needed one more class library for zipping and unzipping files:

Compressing and decompressing files are nowadays necessary, in order to improve several tasks, such as transferring files between servers. There are many APIs out there that allows add zip/unzip functionallity to programs. Recently, I needed a component that could be used in both C++ and VBS, so I started to look some zip APIs. I found an excellent one in Lucian Wischik’s article. However, it was an API written in C/C++, not usable in VBS. So, I decided to do a wrapper around such API and created an ATL-based COM component.

The result was this post to the CodeProject web site.

The article is pretty long on code listings and a bit shorter on explanation, but the class looks easy enough to deal with. If you’re using VB, I guess this is a decent option.

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This entry was posted on Tuesday, February 28th, 2006 at 4:13 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.