Compression - Re: lzrw and lzp contexts ...

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Re: lzrw and lzp contexts ...

aslanski2002@yahoo.com

2005-10-23, 7:55 am

Jim Leonard yazdi:
> Ignorant wrote:
>
> I'm not sure I understand you, as they have incompatible token
> concepts. LZRW/LZ77/LZSS/etc. outputs match length and match offset.
> The beauty of LZP is that it outputs *only* match length -- the offset
> is inferred through the previous 3-byte context. The offsets are
> maintain in a table at runtime; they are never part of the compression
> output.

So lzp needs match lengths above 4 while for the others a match length
of 3 is enough which lzp has to encode literally.

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