Yann Collet
0ff4df1b94
changed strategy : opt[] path is complete after each match
...
previous strategy would leave a few "bad choices"
on the ground they would be fixed later,
but that requires passing through each position to make the fix
and cannot give the end position of the last useful match.
2017-11-02 13:44:57 -07:00
Yann Collet
16a4337473
added hash chain with conditional length
...
not a success yet
2017-10-25 07:07:08 +02:00
Yann Collet
a12cdf00c3
lz4opt: added hash chain search
2017-10-20 17:04:29 -07:00
Yann Collet
a4314829db
fused getLongerMatch and getWiderMatch
2017-10-09 01:50:28 -07:00
Yann Collet
97c18f5f0e
re-inserted last byte test in widerMatch
2017-10-09 01:44:05 -07:00
Yann Collet
bdca63ed69
early out is not better
2017-10-09 00:36:47 -07:00
Yann Collet
1ee17e4eb8
optional fuse
2017-10-09 00:31:12 -07:00
Yann Collet
b9459faeb2
improved search of rep-1 patterns
2017-10-08 23:55:42 -07:00
Yann Collet
f1fa91d6fc
insertAndFindBestMatch defers to insertAndGetWiderMatch
2017-10-08 23:40:21 -07:00
tcpan
f423d016cf
FIX: added prefix to FORCE_INLINE to prevent redefinition error during compilation when used with other libraries that define FORCE_INLINE
2017-08-24 10:14:20 -04:00
Yann Collet
d8aafe2c52
dictionary compression correctly uses compression level
...
Not obvious : copying the state was copying cdict's compression level
2017-08-10 00:48:19 -07:00
Yann Collet
31f2cdf4d2
implemented dictionary compression in lz4frame
...
note : only compression API is implemented and tested
still to do : decompression API
2017-08-09 16:51:19 -07:00
Chocobo1
a4ec7fa7b7
Fix gcc7 Wimplicit-fallthrough warnings
...
For the default Wimplicit-fallthrough=3 level,
the comment should start with "fall*"
2017-06-19 13:57:35 +08:00
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
1efa48831e
minor readability changes
2017-05-02 12:01:13 -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
Yann Collet
60b6d2907f
improved level 10 speed for degenerated cases
2017-03-24 11:29:35 -07:00
Yann Collet
b8bc70022b
minor refactor
2017-03-20 05:04:12 -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
430b7d32b3
created LZ4_HC_STATIC_LINKING_ONLY section
...
where are exposed new prototypes *_destSize()
2017-03-16 02:16:24 -07:00
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
Przemyslaw Skibinski
312d88249f
removed nextToUpdateBT
2016-12-28 15:38:59 +01:00
Przemyslaw Skibinski
3d5bb38977
clean logging
2016-12-28 15:37:12 +01:00
Przemyslaw Skibinski
1c80b9af4e
LZ4HC_getSearchNum
2016-12-28 15:18:19 +01:00
Przemyslaw Skibinski
12aae846b3
fixed table update in LZ4_loadDictHC
2016-12-28 13:19:11 +01:00
Przemyslaw Skibinski
c8b31263cc
added FUZ_CLEVEL_DEFAULT
2016-12-28 13:08:38 +01:00
Yann Collet
52cac9a973
updated a few macros names
2016-12-22 11:41:05 +01:00
Przemyslaw Skibinski
4f050b68d8
tree update dependent from compression level
2016-12-09 18:17:46 +01:00
Przemyslaw Skibinski
838ed341f9
fullUpdate as a parameter
2016-12-09 17:16:35 +01:00
Przemyslaw Skibinski
a22e71d4a9
full binary tree update
2016-12-09 12:37:17 +01:00
Przemyslaw Skibinski
1833be1cf0
fixed gcc warnings
2016-12-07 12:59:05 +01:00
Przemyslaw Skibinski
77b051ed7b
improve code formatting
2016-12-07 12:17:24 +01:00
Przemyslaw Skibinski
e3fee94742
LZ4HC_MAX_CLEVEL = 12
2016-12-07 12:16:33 +01:00
Przemyslaw Skibinski
757ef1d5fc
removed LZ4HC_GetAllMatches
2016-12-07 11:44:17 +01:00
Przemyslaw Skibinski
2113ead176
17-bit LZ4HC_MAXD
2016-12-06 19:11:53 +01:00
Przemyslaw Skibinski
c1ef7a177f
introduced LZ4HC_compress_hashChain
2016-12-06 15:21:28 +01:00
Yann Collet
8b233b228d
added a few dates
2016-11-21 15:51:39 -08:00
Yann Collet
84b97f90b8
fuzzer code refactoring
...
fix g++ conversion warning
2016-11-12 17:14:57 -08:00
Yann Collet
94542d8458
made lz4hc explicitly dependent on lz4
2016-11-12 15:50:29 -08:00
Yann Collet
874f3e095b
update code comments
2016-11-12 07:29:54 -08:00
Nick Terrell
85aeb0e4bb
Expose internal types to remove strict aliasing
2016-11-11 13:00:02 -08:00
Yann Collet
c7ab95faa5
slightly improved HC compression ratio
2016-11-07 19:32:24 -08:00
Yann Collet
258a5e7fa4
updated comments
2016-11-03 17:14:25 -07:00
Przemyslaw Skibinski
84cedb4632
updated links to LZ4 repository
2016-11-03 15:12:57 +01:00
Yann Collet
64f556e610
lz4cli version number from lz4.h
2016-09-02 19:32:06 -07:00
Yann Collet
5871585b6a
coding style change
2016-09-02 19:06:01 -07:00
inikep
2cf32ef0f1
-b# and -e# options from zstd
2016-09-02 22:59:18 +02:00
Yann Collet
2c80138121
heapmode macro option for lz4hc
2015-10-21 15:00:48 +01:00
Yann Collet
aa1350e139
lz4hc : added one malloc test
2015-06-28 19:51:11 -08:00
Yann Collet
1c3e633c48
Added compilation flag -Wcast-qual
2015-05-06 01:58:24 +01:00
Yann Collet
e05088d0eb
Updated lz4hc API
2015-05-03 20:57:21 +01:00
Yann Collet
2a974d73c3
refactored lz4hc
2015-05-02 15:44:43 +01:00
Yann Collet
d6dc0a410d
streaming API : Improved ring buffer management
2015-04-24 10:15:12 +01:00
Yann Collet
b805d581b9
Removed obsolete functions from lz4 cli
2015-04-21 19:07:31 +01:00
Yann Collet
81fdd9df23
Fixed a few Valgrind warnings
2015-04-12 09:29:52 +01:00
Yann Collet
be9d248851
Update lz4hc API : LZ4_compressHC_safe()
2015-04-11 12:28:09 +01:00
Yann Collet
002ec60f0f
restored lz4hc compression ratio
2015-03-30 15:57:26 +01:00
Yann Collet
a357f434f0
Fixed cast-align warnings on 32-bits
2015-03-25 18:06:40 +01:00
Yann Collet
45a357fd17
Improved sparse file support
2015-03-13 02:24:08 +01:00
Yann Collet
f68eead36c
Added : -pedantic compilation option
2014-12-17 12:32:49 +01:00
Yann Collet
8a9fb8cf32
Fixed : older compiler don't like nameless unions, reported by Cheyi Lin
2014-12-16 22:03:16 +01:00
Yann Collet
95cc6cef64
Fixed : bug within LZ4 HC streaming mode, reported by James Boyle
2014-12-16 02:13:19 +01:00
Yann Collet
c5decf7562
minor refactoring
2014-12-06 17:10:54 +01:00
Yann Collet
b827ecf728
Clarified a few comments
2014-12-03 23:19:11 +01:00
Yann Collet
65ee6b09c4
Fixed : deprecated function LZ4_slideInputBufferHC()
2014-12-03 19:17:10 +01:00
Yann Collet
d008c87151
New directory structure : library source files into /lib directory
2014-11-30 23:32:12 +01:00
