Compression - non-GPL, LZO-alike data compression libraries?

Author

non-GPL, LZO-alike data compression libraries?

He Shiming

2005-04-21, 3:55 am

Hi,

I'm working on a project that requires data compression and lightning speed
de-compression. So I looked at a few solutions. BZip, is apparently the best
to get a higher compression ratio. ZLib is good, but it's not fast enough.
LZO fits my requirement, but it's GPL. My project wasn't GPL, and I can't
afford its commercial license.

Is there any similar non-GPL data-compression libraries that does similar to
LZO in terms of decompression speed?

Thanks in advance,
--
He Shiming

Michel Bardiaux

2005-04-21, 3:55 pm

He Shiming wrote:
> Hi,
>
> I'm working on a project that requires data compression and lightning speed
> de-compression. So I looked at a few solutions. BZip, is apparently the best
> to get a higher compression ratio. ZLib is good, but it's not fast enough.
> LZO fits my requirement, but it's GPL. My project wasn't GPL, and I can't
> afford its commercial license.
>
> Is there any similar non-GPL data-compression libraries that does similar to
> LZO in terms of decompression speed?
>
> Thanks in advance,

Have you tried changing the compression level and the strategy in zlib?

--
Michel Bardiaux
Peaktime Belgium S.A. Bd. du Souverain, 191 B-1160 Bruxelles
Tel : +32 2 790.29.41

John Reiser

2005-04-21, 3:55 pm

> Is there any similar non-GPL data-compression libraries that does similar to
> LZO in terms of decompression speed?

There are various speed improvements to zlib, frequently depending on
processor, environment and usage. One of them is:
http://BitWagon.com/zlib_arm/zlib_arm.html

Also, it is quite easy to write from scratch a _de_compressor for LZO.
(It is so fast that there cannot be much to do!) The file format
is documented, and the code for the _com_pressor may be consulted
without creating a derived work.

--

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