Commit Graph

30 Commits

Author SHA1 Message Date
George Lu
c9b4d20f02 Added new --zstd= format 2018-06-01 12:39:39 -07:00
George Lu
cec205c842 copy paste 2018-05-31 17:39:36 -07:00
Yann Collet
2c392952f9 paramgrill: use NB_LEVELS_TRACKED in loop
make it easier to generate/track more levels
than ZSTD_maxClevel()
2018-05-13 17:25:53 -07:00
Yann Collet
3f89cd1081 minor : factor out errorOut() 2018-05-12 14:09:32 -07:00
Yann Collet
50993901b2 paramgrill: subtle change in level spacing
distance between levels is slightly increased
to compensate for level 1 speed improvements
and the will to have stronger level 19
extending the range of speed to cover.
2018-05-12 09:40:04 -07:00
Yann Collet
a3f2e84a37 added programmable constraints 2018-05-11 19:43:08 -07:00
Yann Collet
17c19fbbb5 generalized use of readU32FromChar()
and check input overflow
2018-05-11 17:32:26 -07:00
Yann Collet
b7b80e1569 fixed paramgrill 2018-03-21 16:09:15 -07:00
Nick Terrell
dab8cfa3c7 Combine definitions of SEC_TO_MICRO 2017-11-30 19:40:53 -08:00
Nick Terrell
9a2f6f477b Use util.h for timing 2017-11-30 14:57:25 -08:00
Yann Collet
42c1e64270 slightly improved ratio at -22
merging of repcode search into btsearch introduced a small compression ratio regressio at max level :
1.3.2 : 52728769
after repMerge patch : 52760789 (+32020)

A few minor changes have produced this difference.
They can be hard to spot.

This patch buys back about half of the difference,
by no longer inserting position at hc3 when a long match is found there.
It feels strangely counter-intuitive, but works :
after this patch : 52742555 (-18234)
2017-11-19 14:00:55 -08:00
Yann Collet
99435dbbab minor : search early-out on sufficient_len for hc3 and rep
very very small speed and ratio increases
2017-11-19 12:58:04 -08:00
Yann Collet
18b795374a UTIL_getFileSize() returns UTIL_FILESIZE_UNKNOWN on failure
UTIL_getFileSize() used to return zero on failure.
This made it impossible to distinguish a failure from a genuine empty file.
Both cases where coalesced.

Adding UTIL_FILESIZE_UNKNOWN constant has many consequences on user code,
since in many places, the `0` was assumed to mean "error".
This is no longer the case, and the error code must be actively checked.
2017-10-17 16:14:25 -07:00
Yann Collet
96f0cde31a minor function rename
ZSTD_estimateCStreamSize_advanced_usingCParams -> ZSTD_estimateCStreamSize_usingCParams
_usingX is clear.
_advanced feels redundant
2017-09-24 16:47:02 -07:00
Yann Collet
3128e03be6 updated license header
to clarify dual-license meaning as "or"
2017-09-08 00:09:23 -07:00
Yann Collet
d7ad99b2ab Merge branch 'longRangeMatcher' into dev 2017-08-31 18:08:37 -07:00
Stella Lau
b5b9275e67 Rename estimateCCtxSize_advanced() and estimateCStreamSize_advanced() 2017-08-29 10:49:29 -07:00
Yann Collet
32fb407c9d updated a bunch of headers
for the new license
2017-08-18 16:52:05 -07:00
Yann Collet
31af8290d1 ZSTD_estimateCCtx_advanced()
ZSTD_estimateCCtx() is now a "simple" function,
taking int compressionLevel as single argument.

ZSTD_estimateCCtx_advanced() takes a CParams argument,
which is both more complete and more complex to generate.
2017-06-26 15:52:39 -07:00
Yann Collet
83d0c764dc added several compilation flags 2017-05-15 17:15:46 -07:00
Nick Terrell
5f2c7213c7 Merge remote-tracking branch 'upstream/dev' into btopt
* upstream/dev: (305 commits)
  added test for ZSTD_estimateCStreamSize()
  changed variable name, for clarity
  fixed ZSTD_estimateCStreamSize()
  shortened ZSTD_createCStream_Advanced()
  fixed symbols test
  added ZSTD_estimateDStreamSize()
  changed name frameParams into frameHeader
  regroup memory usage function declarations
  separated ZSTD_estimateCStreamSize() from ZSTD_estimateCCtxSize()
  bumped version number
  added ZSTD_estimateCDictSize() and ZSTD_estimateDDictSize()
  Updated ZSTD_freeCCtx()
  updated ZSTD_estimateCCtxSize()
  Updated ZSTD_sizeof_CCtx()
  merged CCtx and CStream as a single same object
  cli : -d and -t do not stop after a failed decompression
  added dev branch CircleCI badge
  added dev branch Appveyor badge
  keep dev branch status only
  creates a binary archive without the `programs` directory
  ...
2017-05-10 16:49:58 -07:00
Yann Collet
4f818182b8 clarified frame parameters for ZSTD_compress*_usingCDict()
created ZSTD_compressBegin_usingCDict_internal(),
which gives direct control to frame Parameters.
ZSTD_resetCStream_internal() now points into it.
2017-04-17 18:29:06 -07:00
Yann Collet
9631e603ae paramgrill : results from optimizer use cli format
Best found configuration is displayed
using documented cli advanced parameter syntax.
2017-04-04 16:54:33 -07:00
Yann Collet
89b32f3db0 fix paramgrill -O#
ensure proposed config does not require more memory than necessary
2017-04-04 16:41:11 -07:00
Yann Collet
2724f25567 fixed paramgrill -O#
find optimal settings for a minimum speed
2017-04-04 16:31:17 -07:00
Yann Collet
c2007388a5 fixed bench.c : optional advanced parameters applied
before creating cdict
2017-04-04 15:35:06 -07:00
Nick Terrell
eeb31eed39 s/ZSTD_btopt2/ZSTD_btultra/g 2017-03-09 11:44:25 -08:00
Przemyslaw Skibinski
5c5f01f3da added ZSTD_btopt2 strategy 2016-10-25 12:25:07 +02:00
Yann Collet
4ded9e591c added boilerplate 2016-08-30 11:06:28 -07:00
inikep
2868d565e4 test-related files moved to tests/ 2016-08-18 13:18:11 +02:00