On Mon, 17 Aug 2009, Thomas Gstädtner wrote:
On Sat, Aug 1, 2009 at 20:15, Vincent Torri<[email protected]> wrote:
On Sun, 2 Aug 2009, David Seikel wrote:
On Sat, 1 Aug 2009 08:40:32 +0200 (CEST) Vincent Torri
<[email protected]> wrote:
while looking at the doc of UPX, i've found that lossless
(de)compression library:
http://www.oberhumer.com/opensource/lzo/
which says to compress better and to be faster decompression than
zlib.
There is no comparison numbers, but maybe it is worth trying to
compare zlib and that lib to see if it would be better to use it in
eet.
There are other contenders, generally more modern compression schemes
that are generally ignored coz things like zip, gz, and bz2 are
too firmly embedded in our conciousness. Too much historical inertia
is not good.
So, if this is to be done, a more thorough roundup of them all would be
the way to go.
Maybe it's not so good for us: that library is GPL. If I'm not mistaken,
that would mean that eet must be GPL too, right ?
Vincent
Yes, this is under a GPLv2+ license with additional commercial
licensing, so I don't see any chance to use it in any non-GPL or
non-commercial application - except calling the binary directly
without including any sourcecode itself.
But there are alternatives: The best one is most likely XZ (the
successor of lzma) which usually compresses at a 2-digit percentage
better compared to gzip at the cost of slightly more computing time to
decompress and a lot more to compress (still better than bzip2 in any
case).
It's available under LGPL so, there should be no problems with the license.
http://tukaani.org/xz/
gzip also consumes few memory when decompressing, which is good for
embedded devices. So comparison must be made on speed and memory
consumption.
Vincent
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