[gameprogrammer] Re: Lossless data compression
- From: "Kevin Jenkins" <gameprogrammer@xxxxxxxxxx>
- To: <gameprogrammer@xxxxxxxxxxxxx>
- Date: Fri, 9 Jul 2004 18:19:53 -0700
I was looking at this range coder
http://www.arturocampos.com/ac_range.html
It's supposedly as good as arithmetic coding but twice as fast.
I can use zlib but can it run in real time without slowing the engine down?
I'm currently using huffman which is pretty fast to decode.
Either way I'm going to give zlib a shot for my game. In my game you
download files from the server if you don't have them and certain big files
need to be compressed.
----- Original Message -----
From: "Robbert de Groot" <zekaric@xxxxxxxx>
To: <gameprogrammer@xxxxxxxxxxxxx>
Sent: Friday, July 09, 2004 6:02 PM
Subject: [gameprogrammer] Re: Lossless data compression
> > I'm currently using the huffman encoding algorithm for compression in my
> > networking engine. However, I'd like something that compresses a bit
> > better. I read about a lossless compression algorithm that used
floating
> > point that was supposed to be even better but can't remember.
> >
> > Anyone knows what this is?
>
> As someone else mention, arithmetic coding or Markov chains. You won't
get
> better results from it over Huffman.
>
> Your best bet would be to have a look at zlib.org which has a supremely
> liberal license and you really can't get much better compression.
Although
> LZW is now free from patent/copyright/whatever you could use that as well
> and it isn't all that difficult to code up but one more thing to mess
about
> with.
>
>
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