2 cli : new : `--list` command, by Paul Cruz
3 cli : changed : xz/lzma support enabled by default
4 cli : changed : `-t *` continue processing list after a decompression error
5 API : added : ZSTD_versionString()
6 API : promoted to stable status : ZSTD_getFrameContentSize(), by Sean Purcell
7 API exp : new advanced API : ZSTD_compress_generic(), ZSTD_CCtx_setParameter()
8 API exp : new : API for static or external allocation : ZSTD_initStatic?Ctx()
9 API exp : added : ZSTD_decompressBegin_usingDDict(), requested by Guy Riddle (#700)
10 API exp : clarified memory estimation / measurement functions.
11 API exp : changed : strongest strategy renamed ZSTD_btultra, fastest strategy ZSTD_fast set to 1
12 tools : decodecorpus can generate random dictionary-compressed samples, by Paul Cruz
13 new : contrib/seekable_format, demo and API, by Sean Purcell
14 changed : contrib/linux-kernel, updated version and license, by Nick Terrell
17 cli : changed : Multithreading enabled by default (use target zstd-nomt or HAVE_THREAD=0 to disable)
18 cli : new : command -T0 means "detect and use nb of cores", by Sean Purcell
19 cli : new : zstdmt symlink hardwired to `zstd -T0`
20 cli : new : command --threads=# (#671)
21 cli : changed : cover dictionary builder by default, for improved quality, by Nick Terrell
22 cli : new : commands --train-cover and --train-legacy, to select dictionary algorithm and parameters
23 cli : experimental targets `zstd4` and `xzstd4`, with support for lz4 format, by Sean Purcell
24 cli : fix : does not output compressed data on console
25 cli : fix : ignore symbolic links unless --force specified,
26 API : breaking change : ZSTD_createCDict_advanced(), only use compressionParameters as argument
27 API : added : prototypes ZSTD_*_usingCDict_advanced(), for direct control over frameParameters.
28 API : improved: ZSTDMT_compressCCtx() reduced memory usage
29 API : fix : ZSTDMT_compressCCtx() now provides srcSize in header (#634)
30 API : fix : src size stored in frame header is controlled at end of frame
31 API : fix : enforced consistent rules for pledgedSrcSize==0 (#641)
32 API : fix : error code "GENERIC" replaced by "dstSizeTooSmall" when appropriate
33 build: improved cmake script, by @Majlen
34 build: enabled Multi-threading support for *BSD, by Baptiste Daroussin
35 tools: updated Paramgrill. Command -O# provides best parameters for sample and speed target.
36 new : contrib/linux-kernel version, by Nick Terrell
39 cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski
40 cli : new : advanced benchmark command --priority=rt
41 cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77
42 cli : fix : --rm remains silent when input is stdin
43 cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski
44 speed : improved decompression speed in streaming mode for single shot scenarios (+5%)
45 memory: DDict (decompression dictionary) memory usage down from 150 KB to 20 KB
46 arch: 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell
47 API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize()
48 API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value)
49 build : new: meson build system in contrib/meson, by Dima Krasner
50 build : improved cmake script, by @Majlen
51 build : added -Wformat-security flag, as recommended by Padraig Brady
52 doc : new : educational decoder, by Sean Purcell
55 cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`)
56 cli : new : experimental target `make zstdmt`, with multi-threading support
57 cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano.
58 cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski
59 cli : fix zstdless on Mac OS-X, by Andrew Janke
60 cli : fix #232 "compress non-files"
61 dictBuilder : improved dictionary generation quality, thanks to Nick Terrell
62 API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental)
63 API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul
64 API : new : ZDICT_finalizeDictionary()
65 API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511)
66 API : fix : all symbols properly exposed in libzstd, by Nick Terrell
67 build : support for Solaris target, by Przemyslaw Skibinski
68 doc : clarified specification, by Sean Purcell
71 API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init
72 API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize()
73 API : zbuff : changed : prototypes now generate deprecation warnings
74 lib : improved : faster decompression speed at ultra compression settings and 32-bits mode
75 lib : changed : only public ZSTD_ symbols are now exposed
76 lib : changed : reduced usage of stack memory
77 lib : fixed : several corner case bugs, by Nick Terrell
78 cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski
79 cli : new : preserve file attributes
80 cli : new : added zstdless and zstdgrep tools
81 cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd)
83 zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski
84 install : better compatibility with FreeBSD, by Dimitry Andric
85 source tree : changed : zbuff source files moved to lib/deprecated
88 New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption
89 New : doc/zstd_manual.html, by Przemyslaw Skibinski
90 Improved : slightly better compression ratio at --ultra levels (>= 20)
91 Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report
92 Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section)
93 Added : example/multiple_streaming_compression.c
94 Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h)
96 Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets
99 New : contrib/pzstd, parallel version of zstd, by Nick Terrell
100 added : NetBSD install target (#338)
101 Improved : speed for batches of small files
102 Improved : speed of zlib wrapper, by Przemyslaw Skibinski
103 Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier
104 Fixed : CLI -d output to stdout by default when input is stdin (#322)
105 Fixed : CLI correctly detects console on Mac OS-X
106 Fixed : CLI supports recursive mode `-r` on Mac OS-X
107 Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski
108 Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319)
109 Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365)
110 Fixed : zstd-pgo, reported by octoploid (#329)
113 Change Licensing, all project is now BSD, Copyright Facebook
114 Small decompression speed improvement
115 API : Streaming API supports legacy format
116 API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParamter()
117 CLI supports legacy formats v0.4+
118 Fixed : compression fails on certain huge files, reported by Jesse McGrew
119 Enhanced documentation, by Przemyslaw Skibinski
123 Changed : --ultra now enables levels beyond 19
124 Changed : -i# now selects benchmark time in second
125 Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell
126 Fixed : speed regression on specific patterns (#272)
127 Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291)
128 Fixed : ICC compilation, by Przemyslaw Skibinski
131 Improved : better speed on clang and gcc -O2, thanks to Eric Biggers
132 New : Build on FreeBSD and DragonFly, thanks to JrMarino
133 Changed : modified API : ZSTD_compressEnd()
134 Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist
135 Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers
136 Fixed : large dictionaries (> 384 KB), reported by Ilona Papava
137 Fixed : checksum correctly checked in single-pass mode
138 Fixed : combined --test amd --rm, reported by Andreas M. Nilsson
139 Modified : minor compression level adaptations
140 Updated : compression format specification to v0.2.0
141 changed : zstd.h moved to /lib directory
144 Transition version, supporting decoding of v0.8.x
147 Added : homebrew for Mac, by Daniel Cade
148 Added : more examples
149 Fixed : segfault when using small dictionaries, reported by Felix Handte
150 Modified : default compression level for CLI is now 3
151 Updated : specification, to v0.1.1
154 New : compression format specification
155 New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner.
156 New : `ZSTD_getDecompressedSize()`
157 New : OpenBSD target, by Juan Francisco Cantero Hurtado
158 New : `examples` directory
159 fixed : dictBuilder using HC levels, reported by Bartosz Taudul
160 fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte
161 fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski
162 modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section)
163 modified : legacy functions no longer need magic number
166 fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski.
167 fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner.
168 fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner.
171 fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier
172 fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв
173 fixed : corruption issue, reported by cj
174 modified : checksum enabled by default in command line mode
177 New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski
178 New : Command `--rm`, to remove source file after successful de/compression
179 New : Visual build scripts, by Christophe Chevalier
180 New : Support for Sparse File-systems (do not use space for zero-filled sectors)
181 New : Frame checksum support
182 New : Support pass-through mode (when using `-df`)
183 API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()`
184 API : create dictionary files from custom content, by Giuseppe Ottaviano
185 API : support for custom malloc/free functions
186 New : controllable Dictionary ID
187 New : Support for skippable frames
190 New : zlib wrapper API, thanks to Przemyslaw Skibinski
191 New : Ability to compile compressor / decompressor separately
192 Changed : new lib directory structure
193 Fixed : Legacy codec v0.5 compatible with dictionary decompression
194 Fixed : Decoder corruption error (#173)
195 Fixed : null-string roundtrip (#176)
196 New : benchmark mode can select directory as input
197 Experimental : midipix support, VMS support
200 Stronger high compression modes, thanks to Przemyslaw Skibinski
201 API : ZSTD_getFrameParams() provides size of decompressed content
202 New : highest compression modes require `--ultra` command to fully unleash their capacity
203 Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner
206 New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski
207 Changed : Dictionary builder integrated into libzstd and zstd cli
208 Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`.
209 Fix : high compression modes for big-endian platforms
210 New : zstd cli : `-t` | `--test` command
213 New : dictionary builder utility
214 Changed : streaming & dictionary API
215 Improved : better compression of small data
218 Improved : small compression speed improvement in HC mode
219 Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default
223 fix : fast compression mode on Windows
224 New : cmake configuration file, thanks to Artyom Dymchenko
225 Improved : high compression mode on repetitive data
226 New : block-level API
227 New : ZSTD_duplicateCCtx()
230 new : -m/--multiple : compress/decompress multiple files
233 Fixed : high compression modes for Windows 32 bits
234 new : external dictionary API extended to buffered mode and accessible through command line
235 new : windows DLL project, thanks to Christophe Chevalier
238 new : external dictionary API
242 Generic minor improvements for small blocks
243 Fixed : big-endian compatibility, by Peter Harris (#85)
246 Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben)
250 Command line utility compatible with high compression levels
251 Removed zstdhc => merged into zstd
252 Added : ZBUFF API (see zstd_buffered.h)
253 Rolling buffer support
259 minor generic compression improvements
265 Small compression ratio improvement
271 Small compression ratio improvement
274 HC mode : compression levels 2-26
277 Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier
280 Fix : Read errors, advanced fuzzer tests, by Hanno Böck
283 **Breaking format change**
284 Faster decompression speed
285 Can still decode v0.1 format
288 fix uninitialization warning, reported by Evan Nemerson
291 frame concatenation support
295 detects write-flush errors