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fhpack
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Update README.md

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Andy McFadden 2015-08-02 19:09:17 -07:00
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@ -268,3 +268,10 @@ Note: test/nomatch is not compressible by LZ4 encoding. fhpack was able
to compress it because it zeroed out the "screen holes". When processed
in hole-preservation mode, test/nomatch expands to 8292 bytes.
LZSS, which was used by HardPressed to get reasonable compression with
fast decode speeds, reduces the corpus to 243991 bytes (36.7%), making it
a viable alternative. It's generally inferior to LZ4 as the maximum
match length and offset are much shorter, but that's not too significant
for hi-res images. Literals are identified with individual flag bits,
rather than as runs of bytes, which reduces performance for long strings
of literals.