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v1.5.0
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288 Commits
Author SHA1 Message Date
Ulrich Kunitz c7942caff0 Clarify special case of offset history update 
If the current sequence has literal length of zero then an offset value
of three is handled in a special manner. While I implemented a golang
decoder I had to consult the educational decoder for clarification on
the update of the offset history in that case. This commit provides the
clarification that the offset value Repeated_Offset1-1 is handled as a
new offset is added to the offset history accordingly.
 2018-10-22 23:46:43 +02:00
Yann Collet 1e6208e75e bumped version number to v1.3.7 
updated documentation
 2018-10-11 14:40:12 -07:00
Yann Collet 68bec4c5bb added graph for ZSTD_compress_usingCDict() in v1.3.6 2018-10-04 14:39:11 -07:00
Yann ColletandGitHub 8883af6a1e Merge pull request #1327 from facebook/adapt 
Adaptive compression
 2018-09-26 14:39:08 -07:00
Yann Collet 72a3adf826 updated format documentation 
to match last edits of RFC8478.
 2018-09-25 16:34:26 -07:00
Yann Collet 04f47bbdd2 Merge branch 'dev' into adapt 2018-09-24 16:56:45 -07:00
Yann Collet a54c86cfc6 defined a minimum negative level 
which can be probed using new function ZSTD_minCLevel().

Also : redefined ZSTD_TARGETLENGTH_MIN/MAX for consistency

used the opportunity to bump version number to v1.3.6
 2018-09-20 16:52:03 -07:00
Yann Collet 2f78228f65 Merge branch 'dev' into adapt 2018-09-19 12:43:42 -07:00
Yann Collet 005f000aed updated documentation of *refPrefix() 
indicating the equivalence with `diff` operation.
 2018-09-18 13:07:08 -07:00
Yann Collet 7269fe6cd3 minor code comment update 2018-09-14 16:06:35 -07:00
Yann ColletandGitHub 0403148315 Merge pull request #1295 from felixhandte/hdr-intro-comment-negative-lvls 
Proposed Update to Zstd.h Introduction Comment
 2018-09-14 15:29:19 -07:00
Yann Collet 674dd21bd0 final parameter tuning 2018-09-12 17:25:34 -07:00
Yann Collet 55a8f84a2c spec clarification 
following #1305 comments from @ulikunitz
 2018-09-05 12:31:33 -07:00
W. Felix Handte 8e944ccade Regenerate Documentation 2018-08-22 17:07:34 -07:00
Yann Collet 33f7709c71 fileio: changed parameter type from ptr to plain structure 
safer : this parameter is read-only,
we don't want original structure to be modified
 2018-08-13 13:02:03 -07:00
Nick Terrell c1a7defee1 Small fixes to zstd specification 
Update to keep in sync with the RFC.
 2018-07-10 15:07:36 -07:00
Yann Collet a55ffbb31b removed unused imaged 2018-06-27 16:03:46 -07:00
Yann Collet c0007893b4 added graph for cdict speed v1.3.5 improvements 2018-06-27 15:58:34 -07:00
Yann Collet 4489daec09 slightly adjusted default-distribution threshold 
depending on strategy.
fast favors faster compression and decompression speeds.
 2018-06-26 20:10:45 -07:00
Yann ColletandGitHub d70c4a5074 Merge pull request #1201 from facebook/rfcUpdate 
updated Zstandard frame format
 2018-06-22 11:53:50 -07:00
Yann Collet c1e6347717 fixed minor typos, detected by @terrelln 2018-06-21 18:08:11 -07:00
Yann Collet 7639db939f updated Zstandard frame format 
adding clarifications from IETF RFC DISCUSS.
 2018-06-21 17:55:55 -07:00
Yann Collet 2d76defbfe grouped all histogram functions into hist.c 
renamed functions with HIST_* prefix
 2018-06-13 19:49:31 -04:00
Yann Collet a57b4df85f removed literalCompression directive 
in this version, literal compression is always disabled for ZSTD_fast strategy.

Performance parity between ZSTD_compress_advanced() and ZSTD_compress_generic()
 2018-06-07 15:24:12 -07:00
Yann Collet 24319975b6 bumped version number to v1.3.5 2018-06-06 15:51:55 -07:00
Yann Collet 830fd4468f better make -j all behavior 
avoid concurrent compilation of libzstd
 2018-06-06 12:47:16 -07:00
Yann Collet a4c9c4defe update Zstandard format specification 
answering a few questions from IETF RFC Discuss stage.
 2018-05-31 10:47:44 -07:00
Nick Terrell 73f4c890cd Clarify what happens when Number_of_Sequences == 0 2018-05-22 16:12:33 -07:00
Yann Collet 82ad249645 Clarifications of Zstandard format specification 
from IETF RFC review
 2018-04-30 12:36:55 -07:00
Yann Collet 12f60b8c98 clarified documentation related to refPrefix() 2018-04-25 10:17:06 -07:00
Yann Collet ace856a835 updated documentation of streaming compression api 2018-04-24 14:44:27 -07:00
Nick Terrell 6bb6e6178a Add zstdmt long range mode graphs 2018-03-23 14:06:05 -07:00
Yann Collet d6c6b62958 updated graph for dictionary compression 2018-03-22 18:44:56 -07:00
Yann Collet 184e1c8b8c updated benchmark figures 2018-03-22 18:22:10 -07:00
Yann Collet b7b80e1569 fixed paramgrill 2018-03-21 16:09:15 -07:00
Yann Collet a99c4a3621 Merge branch 'dev' into advancedDecompress 2018-03-21 06:08:28 -07:00
Yann Collet 6873fec658 changed dictMore for dictContentType 
which seems clearer to describe what the variable/argument is about.
 2018-03-20 15:13:14 -07:00
Yann Collet 31b54b6eea updated ZSTD_initStaticDDict() prototype 
can also specify dictContentType.
 2018-03-20 14:52:02 -07:00
Yann Collet 353117c5d7 implemented ZSTD_DCtx_loadDictionary*() 
this required updating ZSTD_createDDict_advanced()
to accept a dictContentType parameter (raw, full, auto).
 2018-03-20 13:40:29 -07:00
Yann Collet c8b3d389fd updated CCtxParams API 
to respect naming convention :
ZSTD_CCtxParams_*()
 2018-03-19 15:07:26 -07:00
Yann Collet 97816400ca added /contrib projects to make all 2018-03-15 16:40:14 -07:00
Yann Collet 2291b85a1e changed ZSTD_p_literalCompression into ZSTD_p_compressLiterals 
prefer verb+object construction
 2018-03-12 11:44:10 -07:00
Yann Collet a57d43d4d4 updated documentation of targetLength 2018-03-12 11:35:01 -07:00
Yann Collet 564cb1b640 update doc/README.md on provided tools to test 3rd party implementations 2018-02-27 17:37:05 -08:00
Yann Collet 9945e60ac4 Merge branch 'dev' into flexibleLevel 2018-02-10 11:54:49 -08:00
Yann Collet 209df52ba2 Changed nbThreads for nbWorkers 
This makes it easier to explain that nbWorkers=0 --> single-threaded mode,
while nbWorkers=1 --> asynchronous mode (one mode thread on top of the "main" caller thread).
No need for an additional asynchronous mode flag.
nbWorkers>=2 works the same as nbThreads>=2 previously.
 2018-02-01 19:29:30 -08:00
Yann ColletandGitHub 823a28a1f4 Merge pull request #1000 from facebook/progressiveFlush 
Progressive flush
 2018-01-30 22:49:47 -08:00
Yann Collet b173b8d8da updated zstd api manual 2018-01-30 15:05:12 -08:00
Yann Collet 2cb0740b6b zstdmt: changed naming convention 
to avoid confusion with blocks.

also:
- jobs are cut into chunks of 512KB now, to reduce nb of mutex calls.
- fix function declaration ZSTD_getBlockSizeMax()
- fix outdated comment
 2018-01-30 14:43:36 -08:00
Yann Collet 9f8ed23b5b bumped version number to v1.3.4 
also added a paragraph on using compression level with training mode
as this is a recurrent question (see for example #1004)
 2018-01-27 22:23:26 -08:00