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Brotli compression format
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Zoltan Szabadka b3d3723f62 Add "zopfli"-style backward reference search to brotli. 
This commit adopts the backward reference search algorithm
from the zopfli project (see https://github.com/google/zopfli)
to brotli.

This slower backward reference search is run only in quality 11
and it runs two iterations of entropy cost modeling and
shortest path search.

As a result, the original backward reference search function can
be simplified a bit, since we can remove some heuristics that were
replaced with the zopfli-style search.
2015-06-12 16:25:41 +02:00
dec Brotli custom LZ77 dictionary support. 2015-06-12 15:43:54 +02:00
docs Change the expiration date and title of the -04 draft. 2015-05-11 17:04:13 +02:00
enc Add "zopfli"-style backward reference search to brotli. 2015-06-12 16:25:41 +02:00
python [roundtrip_test.py] repeat test at different quality (1, 6, 9, 11) 2015-05-11 14:12:37 +01:00
tests Expose the quality parameter to the bro.cc tool. 2015-05-11 14:14:05 +02:00
tools Expose the quality parameter to the bro.cc tool. 2015-05-11 14:14:05 +02:00
.gitignore Speed and memory usage improvements for the decoder. 2015-05-07 16:53:43 +02:00
LICENSE Add brotli decompressor 2013-10-11 10:26:07 +02:00
README.md Update README.md 2015-06-12 14:31:47 +02:00
setup.py Speed and memory usage improvements for the decoder. 2015-05-07 16:53:43 +02:00
shared.mk Makefile fixes and cleanups 2015-03-14 14:31:44 +03:00

README.md

brotli

Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.

The specification of the Brotli Compressed Data Format is defined in the following internet draft: http://www.ietf.org/id/draft-alakuijala-brotli

Brotli is open-sourced under the Apache License, Version 2.0, see the LICENSE file.

Brotli mailing list: https://groups.google.com/forum/#!forum/brotli