Yann Collet
89b9f026c9
made level 10 a bit faster
...
at the expense of a little bit of compression ratio.
Now speed is intermediate on calgary corpus :
25 - 12 - 8 - 3
2017-06-13 17:25:29 -07:00
Yann Collet
bfc1806605
clarified lz4frame api comment ( #350 )
2017-06-13 12:35:00 -07:00
Yann Collet
139a387d17
updated NEWS
2017-06-12 10:54:59 -07:00
Yann Collet
e60cbb5cac
added test for LZ4F_resetDecompressionContext()
2017-05-10 16:28:36 -07:00
Yann Collet
a902127613
bumped version number to 1.8.0
...
due to addition of prototype
LZ4F_resetDecompressionContext()
2017-05-10 13:27:18 -07:00
Yann Collet
b8575f2d2b
updated Makefile
...
to automatically build manual files with
make all
2017-05-10 13:26:04 -07:00
Yann Collet
fe932c4527
expose LZ4F_resetDecompressionContext()
2017-05-10 12:25:05 -07:00
Yann Collet
1efa48831e
minor readability changes
2017-05-02 12:01:13 -07:00
Yann Collet
a8dd86d93e
changed macro HEAPMODE into LZ4_HEAPMODE
...
This macro is susceptible to be triggered from user side
typically through compiler flag (-DLZ4_HEAPMODE=1).
In which case, it makes sense to prefix the macro
since we want to reduce potential side-effect on namespace.
2017-05-01 22:32:21 -07:00
Alexey Tourbin
6cf1f7d758
lz4hc.c: clamp compression levels > 12
...
I noticed that, while 'lz4 -12' works fine, 'lz4 -13' does not compress
at all.
$ cat </etc/passwd |wc -c
2565
$ lz4 -12 </etc/passwd |wc -c
1456
$ lz4 -13 </etc/passwd |wc -c
2584
Perhaps the best way to fix this is to clamp the compression level
in the LZ4HC_compress_generic routine.
2017-04-29 16:33:15 +03:00
Alexey Tourbin
f3460fc148
liz4hc.h: fix a comment: LZ4HC_MAX_CLEVEL -> LZ4HC_CLEVEL_MAX
2017-04-29 16:06:45 +03:00
Nick Terrell
0b3e807043
[LZ4F] Allow users to disable LZ4F_DEPRECATE
2017-04-26 10:03:23 -07:00
Yann Collet
e2c9b19122
lz4frame : Added negative compression levels
2017-04-09 01:41:36 -07:00
Yann Collet
7eecd32c07
ensure lz4f_cctx internal buffer size remain valid in case of malloc error
2017-04-09 01:11:39 -07:00
Yann Collet
e169edac05
lz4frame : control lz4 context creation success
2017-04-08 18:27:31 -07:00
Yann Collet
e2827775ee
make __packed memory access default for gcc
...
It's always as good or better then memcpy()
but depends on gcc-specific extension.
solves https://github.com/facebook/zstd/issues/620
2017-03-30 12:22:17 -07:00
Yann Collet
6226d52eab
fixed minor Visual warning
2017-03-29 14:18:10 -07:00
Yann Collet
b88df6b1b0
Improved comments on LZ4F_getFrameInfo()
...
and added LZ4F_resetCompressionContext()
2017-03-29 12:51:08 -07:00
Yann Collet
f0a7651fce
Safer LZ4_getFrameInfo()
...
LZ4_getFrameInfo() is now guaranteed to keep dctx state clean,
even in case of failure.
2017-03-28 17:10:01 -07:00
Yann Collet
4567d0def5
Merge pull request #340 from lz4/optlz4opt
...
lz4opt
2017-03-24 17:10:45 -07:00
Yann Collet
38362c1d65
Merge pull request #338 from ldv-alt/dev
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Export deprecated symbols declared in lz4hc.h
2017-03-24 12:03:32 -07:00
Yann Collet
60b6d2907f
improved level 10 speed for degenerated cases
2017-03-24 11:29:35 -07:00
Yann Collet
8f8fc52fcf
Merge branch 'dev' into optlz4opt
2017-03-24 11:00:40 -07:00
Yann Collet
0863931a1c
fixed API comment for LZ4F_createCompressionContext()
...
as reported by @nh2
2017-03-24 10:34:18 -07:00
Dmitry V. Levin
dab3590fce
Export deprecated symbols declared in lz4hc.h
...
Commit 25b2435885
2017-03-24 03:12:48 +00:00
Yann Collet
68044acfec
Merge branch 'optlz4opt' of github.com:Cyan4973/lz4 into optlz4opt
2017-03-20 09:58:00 -07:00
Yann Collet
b8bc70022b
minor refactor
2017-03-20 05:04:12 -07:00
Yann Collet
cea8f60df1
slight btopt speed improvement
...
removing a useless test
2017-03-20 02:33:02 -07:00
Yann Collet
f513020a6d
slight btopt speed improvement
...
removing a useless test
2017-03-17 18:07:53 -07:00
Yann Collet
8bd32a17b1
made SET_PRICE macro more usable
...
previous version would use argument to also change target member.
Now, only values are transferred
2017-03-17 17:42:47 -07:00
Yann Collet
118b47f3d1
improved lz4opt speed (~4%)
2017-03-17 16:53:35 -07:00
Yann Collet
eff6166eb8
minor price function optimization
2017-03-17 15:51:21 -07:00
Yann Collet
0d073d4d28
added extern C for lz4.h static section
...
should make the file more compatible with C++ compiler, such as Visual or g++
2017-03-17 15:11:09 -07:00
Yann Collet
aae447fffd
LZ4_compress_HC_continue_destSize() works as intended up to level 10
...
It's incompatible with btopt though,
so cLevel >= 11 feature much reduced performance (degraded mode)
2017-03-16 15:41:30 -07:00
Yann Collet
cd35f0d98c
LZ4_compress_HC_destSize() uses LZ4HC_compress_generic() code path
...
Limits compression level to 10,
to remain compatible with Hash Chain.
2017-03-16 15:10:38 -07:00
Yann Collet
6b2a1b3606
updated lz4 version number
2017-03-16 02:24:46 -07:00
Yann Collet
430b7d32b3
created LZ4_HC_STATIC_LINKING_ONLY section
...
where are exposed new prototypes *_destSize()
2017-03-16 02:16:24 -07:00
Yann Collet
e945a27f9c
fix #333 : expose obsolete decoding functions
...
with deprecation warning.
notified by Chen Yufei
2017-03-14 21:21:54 -07:00
Yann Collet
b9132bedcd
Merge pull request #331 from ldv-alt/dev
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Export only those symbols that are part of public API
2017-03-12 03:16:23 -07:00
Dmitry V. Levin
883ebdcee0
Export only those symbols that are part of public API
...
Specify -fvisibility=hidden parameter when linking the shared library
using -fPIC, assuming that gcc >= 4 is used.
This change results to unexporting of the following 42 functions:
LZ4F_getErrorCode
LZ4_XXH32
LZ4_XXH32_canonicalFromHash
LZ4_XXH32_copyState
LZ4_XXH32_createState
LZ4_XXH32_digest
LZ4_XXH32_freeState
LZ4_XXH32_hashFromCanonical
LZ4_XXH32_reset
LZ4_XXH32_update
LZ4_XXH64
LZ4_XXH64_canonicalFromHash
LZ4_XXH64_copyState
LZ4_XXH64_createState
LZ4_XXH64_digest
LZ4_XXH64_freeState
LZ4_XXH64_hashFromCanonical
LZ4_XXH64_reset
LZ4_XXH64_update
LZ4_XXH_versionNumber
LZ4_compressHC
LZ4_compressHC2
LZ4_compressHC2_continue
LZ4_compressHC2_limitedOutput
LZ4_compressHC2_limitedOutput_continue
LZ4_compressHC2_limitedOutput_withStateHC
LZ4_compressHC2_withStateHC
LZ4_compressHC_continue
LZ4_compressHC_limitedOutput
LZ4_compressHC_limitedOutput_continue
LZ4_compressHC_limitedOutput_withStateHC
LZ4_compressHC_withStateHC
LZ4_compress_fast_force
LZ4_compress_forceExtDict
LZ4_createHC
LZ4_decompress_safe_forceExtDict
LZ4_freeHC
LZ4_resetStreamStateHC
LZ4_sizeofStreamStateHC
LZ4_slideInputBufferHC
LZ4_uncompress
LZ4_uncompress_unknownOutputSize
2017-03-10 23:35:30 +00:00
Dmitry V. Levin
25b2435885
Export deprecated symbols
...
Deprecated symbols are still a part of ABI and have to be exported,
so mark them with LZ4LIB_API attribute.
2017-03-10 23:35:30 +00:00
Dmitry V. Levin
7aeecbff71
Explicitly set visibility of public API functions when gcc is used
...
Windows builds already limit exporting of functions to those marked
with LZ4LIB_API tag. The same behaviour could be achieved on other
platforms when a relatively fresh gcc is used.
This change assigns public visibility to all symbols marked with
LZ4LIB_API tag. When the library is built in -fvisibility=hidden
mode, only these marked symbols will be exported.
2017-03-10 23:35:30 +00:00
remittor
36842ebb19
lz4hc: Fix LZ4HC_compress_hashChain for backward compatibility
2017-03-09 12:19:24 +03:00
remittor
baa155088b
lz4hc: Fix LZ4HC_compress_hashChain for full support destSize variant
2017-03-08 18:49:55 +03:00
remittor
f007153e3f
lz4hc: Add LZ4_compressHC_destSize and LZ4_compress_HC_continue_destSize
2017-03-08 11:11:15 +03:00
remittor
45b592b7ec
lz4hc: Cleanup function LZ4HC_encodeSequence
2017-03-08 00:30:54 +03:00
remittor
534f8fa5d6
lz4hc: Cleanup function LZ4HC_compress_hashChain
2017-03-07 17:11:48 +03:00
Eric Siegerman
eb51b2b8d9
Explicitly create $(DESTDIR)$(LIBDIR)/ at install time
...
This is needed on systems where it isn't the parent of
$(PKGCONFIGDIR), and so doesn't get created implicitly.
2017-02-14 22:12:26 -05:00
Yann Collet
04ec092696
updated comments on block sizes
2017-02-08 11:02:32 -08:00
Przemyslaw Skibinski
8e1fd97d16
lz4frame.h: added Introduction
2017-01-23 17:46:32 +01:00
