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brotli
mirror of https://github.com/google/brotli
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331 Commits

Author SHA1 Message Date
szabadka 463ceda563 Merge pull request #108 from szabadka/master 
Use the same hasher for text and font mode.
 2015-05-11 14:12:24 +02:00
Zoltan Szabadka 6622355a9a Use the same hasher for text and font mode. 
We use 4-byte hashing in both and look for length 3
matches separately.
 2015-05-11 14:11:07 +02:00
szabadka 6bb4316280 Merge pull request #107 from szabadka/master 
Fix broken quality 0, make it same as quality 1.
 2015-05-11 13:52:54 +02:00
Zoltan Szabadka cc8d64dfec Fix broken quality 0, make it same as quality 1. 2015-05-11 13:51:47 +02:00
szabadka cc211b92f1 Merge pull request #105 from anthrotype/newparams 
[python] expose new encoder parameters as kwargs of brotli.compress
 2015-05-11 13:36:43 +02:00
Cosimo Lupo c93c0dab92 [bro.py] use brotli.MODE_GENERIC as default compression mode; 
remove additional low-level parameters
 2015-05-11 11:10:48 +01:00
Cosimo Lupo aa6f7d8f0c [brotlimodule] add MODE_GENERIC constant 2015-05-11 11:09:36 +01:00
Cosimo Lupo b7e8291788 [bro.py] remove debug print 2015-05-11 10:39:29 +01:00
Cosimo Lupo 4106a406d0 [bro.py] use new optional encoder parameters when compressing; 
modified the help string to include the new parameters.
 2015-05-11 10:39:28 +01:00
Cosimo Lupo 32c44ec87d [bro.py] use argparse instead of getopt 2015-05-11 10:39:26 +01:00
Cosimo Lupo 3351bb08e3 [brotlimodule] apply uniform docstring style 2015-05-11 10:39:24 +01:00
Cosimo Lupo 6d935db75c [brotlimodule] add quality, lgwin and lgblock parameters 2015-05-11 10:39:23 +01:00
Cosimo Lupo dbcb32614a [brotlimodule] add enable_context_modeling parameter (defaults to True) 2015-05-11 10:39:21 +01:00
Cosimo Lupo 4c1d06931e [brotlimodule] add new keyword params docstring of brotli.compress 2015-05-11 10:39:20 +01:00
Cosimo Lupo 6264bea2e4 [brotlimodule] add greedy_block_split parameter (defaults to False); 
renamed variables: transform -> enable_transforms, dictionary -> enable_dictionary
 2015-05-11 10:39:18 +01:00
Cosimo Lupo b2eba122c8 [brotlimodule] add enable_dictionary parameter (defautls to True) 2015-05-11 10:39:17 +01:00
Cosimo Lupo 89c74d6859 [brotlimodule] use keyword arguments for mode and enable_transforms; 
update brotli.compress docstring accordingly
 2015-05-11 10:39:15 +01:00
szabadka 621cd0cf04 Merge pull request #106 from szabadka/master 
Add a MODE_GENERIC compression mode to the interface.
 2015-05-11 11:34:39 +02:00
Zoltan Szabadka aa853f3cbc Add a MODE_GENERIC compression mode to the interface. 
With this the users can distinguish between not knowing
what the input is (ddefault) and knowing that it is text,
and thus can be relied on to force some UTF-8 specific settings.
 2015-05-11 11:33:19 +02:00
szabadka 288f70d7ea Merge pull request #104 from anthrotype/py3split 
[python] fix compatibility_test.py with Python 3
 2015-05-08 11:11:22 +02:00
Cosimo Lupo e6913b2e78 [python] use built-in split instead of 'string' module for py23 
In python3, the 'string' module no longer has a 'split' function.
 2015-05-08 10:06:18 +01:00
szabadka 4e94277e9d Merge pull request #103 from szabadka/master 
Handle multiple compressed files per original in the test.
 2015-05-07 20:46:40 +02:00
Zoltan Szabadka 10a2f3745a Handle multiple compressed files per original in the test. 
Add some more test cases that decompress to the empty
file or a one byte long file. These test cases have
examples for the updated stream header and meta-block
header formats.
 2015-05-07 20:43:01 +02:00
szabadka 7ee6449b83 Merge pull request #102 from szabadka/master 
Restrict the ARM optimizations to little endian architectures.
 2015-05-07 20:37:22 +02:00
Zoltan Szabadka bef6938af7 Restrict the ARM optimizations to little endian architectures. 2015-05-07 20:36:35 +02:00
szabadka 14c571ca0b Merge pull request #101 from szabadka/master 
Add an Acknowledgements section to the spec.
 2015-05-07 20:11:15 +02:00
Zoltan Szabadka 78350a9135 Add an Acknowledgements section to the spec. 2015-05-07 20:10:22 +02:00
szabadka f0500266c8 Merge pull request #100 from szabadka/master 
Fix 32bit build.
 2015-05-07 19:47:14 +02:00
Zoltan Szabadka f3e71e441e Fix 32bit build. 2015-05-07 19:45:21 +02:00
szabadka 7c277c3ef7 Merge pull request #99 from szabadka/master 
Support window bits 10 - 15 in the decoder.
 2015-05-07 17:45:18 +02:00
Zoltan Szabadka 54f69c9ef7 Support window bits 10 - 15 in the decoder. 
The previous window bit value 17 is used to
extend the range, since it has not been used
in any previous encoders.
 2015-05-07 17:44:33 +02:00
szabadka 7bbfd5df95 Merge pull request #98 from szabadka/master 
Align distance code meaning in the brotli encoder.
 2015-05-07 17:41:11 +02:00
Zoltan Szabadka 12eb9bfd70 Align distance code meaning in the brotli encoder. 
Two different definitions (offset by 1) were used in
command.h and hash.h. Now they have been made the same,
also consistent with the spec (e.g. 0 means use previous dist, etc...)
 2015-05-07 17:40:00 +02:00
szabadka fa2c6df4f5 Merge pull request #97 from szabadka/master 
Faster encoding for low quality settings.
 2015-05-07 17:36:37 +02:00
Zoltan Szabadka 7cde616c9e Faster encoding for low quality settings. 
With this commit, the encoder will skip some
compression optimization steps for quality <= 4,
which results in faster compression but higher
compressed sizes.
 2015-05-07 17:30:10 +02:00
szabadka e4a309ac07 Merge pull request #96 from szabadka/master 
Use a static context map with two buckets for UTF8 data.
 2015-05-07 17:24:12 +02:00
Zoltan Szabadka 945b0d025f Use a static context map with two buckets for UTF8 data. 
Enabled for quality >= 4, and if there are no obvious
UTF8 violations detected.
For each block, we gather two separate histograms, one
for continuation bytes and one for ASCII or lead bytes.
 2015-05-07 17:23:07 +02:00
szabadka 762f9ba5a0 Merge pull request #95 from szabadka/master 
Decoder optimizations for ARM architecture.
 2015-05-07 17:13:06 +02:00
Zoltan Szabadka 5f39d607ef Decoder optimizations for ARM architecture. 2015-05-07 17:10:27 +02:00
szabadka 500c85acae Merge pull request #94 from szabadka/master 
Speed and memory usage improvements for the decoder.
 2015-05-07 17:00:58 +02:00
Zoltan Szabadka 83aa24dc86 Speed and memory usage improvements for the decoder. 
* Change order of members of bit reader state structure.

* Remove unused includes for assert. Add BROTLI_DCHECK
  macros and use it instead of assert.

* Do not calculate nbits in common case of ReadSymbol.

* Introduce and use PREDICT_TRUE / PREDICT_FALSE macros.

* Allocate less memory in the brotli decoder if it knows
  the result size beforehand. Before this, the decoder
  would always allocate 16MB if the encoder annotated the
  window size as 22 bit (which is the default), even if the
  file is only a few KB uncompressed. Now, it'll only
  allocate a ringbuffer as large as needed for the result file.
  But only if it can know the filesize, it's not possible
  to know that if there are multiple metablocks or too large
  uncompressed metablock.
 2015-05-07 16:53:43 +02:00
szabadka 47ea761869 Merge pull request #93 from szabadka/master 
Don't do any block splitting for quality 1.
 2015-04-28 10:14:55 +02:00
Zoltan Szabadka 0f726df1f1 Don't do any block splitting for quality 1. 2015-04-28 10:12:47 +02:00
szabadka 344ea8edb3 Merge pull request #92 from szabadka/master 
Fix an error propagation bug in the decoder.
 2015-04-28 10:08:52 +02:00
Zoltan Szabadka fe14d7b32a Fix an error propagation bug in the decoder. 2015-04-28 10:07:12 +02:00
szabadka 4f902dccf4 Merge pull request #91 from szabadka/master 
Fix the year on the copyright message.
 2015-04-27 18:27:00 +02:00
Zoltan Szabadka 94bc27d87a Fix the year on the copyright message. 2015-04-27 18:25:59 +02:00
szabadka 5a1cf14116 Merge pull request #90 from szabadka/master 
Change the expiration date and title of the -03 draft.
 2015-04-27 18:12:55 +02:00
Zoltan Szabadka fd4a048171 Change the expiration date and title of the -03 draft. 2015-04-27 18:12:09 +02:00
szabadka 29a72665c3 Merge pull request #89 from szabadka/master 
Create -03 version of the internet draft.
 2015-04-27 18:04:12 +02:00