2 cli : changed : Multithreading enabled by default (use target zstd-nomt or HAVE_THREAD=0 to disable)
3 cli : new : command -T0 means "detect and use nb of cores", by Sean Purcell
4 cli : new : zstdmt symlink hardwired to `zstd -T0`
5 cli : new : command --threads=# (#671)
6 cli : changed : cover dictionary builder by default, for improved quality, by Nick Terrell
7 cli : new : commands --train-cover and --train-legacy, to select dictionary algorithm and parameters
8 cli : experimental targets `zstd4` and `xzstd4`, with support for lz4 format, by Sean Purcell
9 cli : fix : does not output compressed data on console
10 cli : fix : ignore symbolic links unless --force specified,
11 API : breaking change : ZSTD_createCDict_advanced(), only use compressionParameters as argument
12 API : added : prototypes ZSTD_*_usingCDict_advanced(), for direct control over frameParameters.
13 API : improved: ZSTDMT_compressCCtx() reduced memory usage
14 API : fix : ZSTDMT_compressCCtx() now provides srcSize in header (#634)
15 API : fix : src size stored in frame header is controlled at end of frame
16 API : fix : enforced consistent rules for pledgedSrcSize==0 (#641)
17 API : fix : error code "GENERIC" replaced by "dstSizeTooSmall" when appropriate
18 build: improved cmake script, by @Majlen
19 build: enabled Multi-threading support for *BSD, by Baptiste Daroussin
20 tools: updated Paramgrill. Command -O# provides best parameters for sample and speed target.
21 new : contrib/linux-kernel version, by Nick Terrell
24 cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski
25 cli : new : advanced benchmark command --priority=rt
26 cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77
27 cli : fix : --rm remains silent when input is stdin
28 cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski
29 speed : improved decompression speed in streaming mode for single shot scenarios (+5%)
30 memory: DDict (decompression dictionary) memory usage down from 150 KB to 20 KB
31 arch: 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell
32 API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize()
33 API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value)
34 build : new: meson build system in contrib/meson, by Dima Krasner
35 build : improved cmake script, by @Majlen
36 build : added -Wformat-security flag, as recommended by Padraig Brady
37 doc : new : educational decoder, by Sean Purcell
40 cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`)
41 cli : new : experimental target `make zstdmt`, with multi-threading support
42 cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano.
43 cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski
44 cli : fix zstdless on Mac OS-X, by Andrew Janke
45 cli : fix #232 "compress non-files"
46 dictBuilder : improved dictionary generation quality, thanks to Nick Terrell
47 API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental)
48 API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul
49 API : new : ZDICT_finalizeDictionary()
50 API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511)
51 API : fix : all symbols properly exposed in libzstd, by Nick Terrell
52 build : support for Solaris target, by Przemyslaw Skibinski
53 doc : clarified specification, by Sean Purcell
56 API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init
57 API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize()
58 API : zbuff : changed : prototypes now generate deprecation warnings
59 lib : improved : faster decompression speed at ultra compression settings and 32-bits mode
60 lib : changed : only public ZSTD_ symbols are now exposed
61 lib : changed : reduced usage of stack memory
62 lib : fixed : several corner case bugs, by Nick Terrell
63 cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski
64 cli : new : preserve file attributes
65 cli : new : added zstdless and zstdgrep tools
66 cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd)
68 zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski
69 install : better compatibility with FreeBSD, by Dimitry Andric
70 source tree : changed : zbuff source files moved to lib/deprecated
73 New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption
74 New : doc/zstd_manual.html, by Przemyslaw Skibinski
75 Improved : slightly better compression ratio at --ultra levels (>= 20)
76 Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report
77 Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section)
78 Added : example/multiple_streaming_compression.c
79 Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h)
81 Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets
84 New : contrib/pzstd, parallel version of zstd, by Nick Terrell
85 added : NetBSD install target (#338)
86 Improved : speed for batches of small files
87 Improved : speed of zlib wrapper, by Przemyslaw Skibinski
88 Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier
89 Fixed : CLI -d output to stdout by default when input is stdin (#322)
90 Fixed : CLI correctly detects console on Mac OS-X
91 Fixed : CLI supports recursive mode `-r` on Mac OS-X
92 Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski
93 Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319)
94 Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365)
95 Fixed : zstd-pgo, reported by octoploid (#329)
98 Change Licensing, all project is now BSD, Copyright Facebook
99 Small decompression speed improvement
100 API : Streaming API supports legacy format
101 API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParamter()
102 CLI supports legacy formats v0.4+
103 Fixed : compression fails on certain huge files, reported by Jesse McGrew
104 Enhanced documentation, by Przemyslaw Skibinski
108 Changed : --ultra now enables levels beyond 19
109 Changed : -i# now selects benchmark time in second
110 Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell
111 Fixed : speed regression on specific patterns (#272)
112 Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291)
113 Fixed : ICC compilation, by Przemyslaw Skibinski
116 Improved : better speed on clang and gcc -O2, thanks to Eric Biggers
117 New : Build on FreeBSD and DragonFly, thanks to JrMarino
118 Changed : modified API : ZSTD_compressEnd()
119 Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist
120 Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers
121 Fixed : large dictionaries (> 384 KB), reported by Ilona Papava
122 Fixed : checksum correctly checked in single-pass mode
123 Fixed : combined --test amd --rm, reported by Andreas M. Nilsson
124 Modified : minor compression level adaptations
125 Updated : compression format specification to v0.2.0
126 changed : zstd.h moved to /lib directory
129 Transition version, supporting decoding of v0.8.x
132 Added : homebrew for Mac, by Daniel Cade
133 Added : more examples
134 Fixed : segfault when using small dictionaries, reported by Felix Handte
135 Modified : default compression level for CLI is now 3
136 Updated : specification, to v0.1.1
139 New : compression format specification
140 New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner.
141 New : `ZSTD_getDecompressedSize()`
142 New : OpenBSD target, by Juan Francisco Cantero Hurtado
143 New : `examples` directory
144 fixed : dictBuilder using HC levels, reported by Bartosz Taudul
145 fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte
146 fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski
147 modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section)
148 modified : legacy functions no longer need magic number
151 fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski.
152 fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner.
153 fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner.
156 fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier
157 fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв
158 fixed : corruption issue, reported by cj
159 modified : checksum enabled by default in command line mode
162 New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski
163 New : Command `--rm`, to remove source file after successful de/compression
164 New : Visual build scripts, by Christophe Chevalier
165 New : Support for Sparse File-systems (do not use space for zero-filled sectors)
166 New : Frame checksum support
167 New : Support pass-through mode (when using `-df`)
168 API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()`
169 API : create dictionary files from custom content, by Giuseppe Ottaviano
170 API : support for custom malloc/free functions
171 New : controllable Dictionary ID
172 New : Support for skippable frames
175 New : zlib wrapper API, thanks to Przemyslaw Skibinski
176 New : Ability to compile compressor / decompressor separately
177 Changed : new lib directory structure
178 Fixed : Legacy codec v0.5 compatible with dictionary decompression
179 Fixed : Decoder corruption error (#173)
180 Fixed : null-string roundtrip (#176)
181 New : benchmark mode can select directory as input
182 Experimental : midipix support, VMS support
185 Stronger high compression modes, thanks to Przemyslaw Skibinski
186 API : ZSTD_getFrameParams() provides size of decompressed content
187 New : highest compression modes require `--ultra` command to fully unleash their capacity
188 Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner
191 New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski
192 Changed : Dictionary builder integrated into libzstd and zstd cli
193 Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`.
194 Fix : high compression modes for big-endian platforms
195 New : zstd cli : `-t` | `--test` command
198 New : dictionary builder utility
199 Changed : streaming & dictionary API
200 Improved : better compression of small data
203 Improved : small compression speed improvement in HC mode
204 Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default
208 fix : fast compression mode on Windows
209 New : cmake configuration file, thanks to Artyom Dymchenko
210 Improved : high compression mode on repetitive data
211 New : block-level API
212 New : ZSTD_duplicateCCtx()
215 new : -m/--multiple : compress/decompress multiple files
218 Fixed : high compression modes for Windows 32 bits
219 new : external dictionary API extended to buffered mode and accessible through command line
220 new : windows DLL project, thanks to Christophe Chevalier
223 new : external dictionary API
227 Generic minor improvements for small blocks
228 Fixed : big-endian compatibility, by Peter Harris (#85)
231 Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben)
235 Command line utility compatible with high compression levels
236 Removed zstdhc => merged into zstd
237 Added : ZBUFF API (see zstd_buffered.h)
238 Rolling buffer support
244 minor generic compression improvements
250 Small compression ratio improvement
256 Small compression ratio improvement
259 HC mode : compression levels 2-26
262 Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier
265 Fix : Read errors, advanced fuzzer tests, by Hanno Böck
268 **Breaking format change**
269 Faster decompression speed
270 Can still decode v0.1 format
273 fix uninitialization warning, reported by Evan Nemerson
276 frame concatenation support
280 detects write-flush errors