1/*
2 * LZ4 - Fast LZ compression algorithm
3 * Header File
4 * Copyright (C) 2011-2016, Yann Collet.
5
6 BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
7
8 Redistribution and use in source and binary forms, with or without
9 modification, are permitted provided that the following conditions are
10 met:
11
12 * Redistributions of source code must retain the above copyright
13 notice, this list of conditions and the following disclaimer.
14 * Redistributions in binary form must reproduce the above
15 copyright notice, this list of conditions and the following disclaimer
16 in the documentation and/or other materials provided with the
17 distribution.
18
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31 You can contact the author at :
32 - LZ4 homepage : http://www.lz4.org
33 - LZ4 source repository : https://github.com/lz4/lz4
34*/
35#ifndef LZ4_H_2983827168210
36#define LZ4_H_2983827168210
37
38#if defined (__cplusplus)
39extern "C" {
40#endif
41
42/* --- Dependency --- */
43#include <stddef.h> /* size_t */
44
45
46/**
47 Introduction
48
49 LZ4 is lossless compression algorithm, providing compression speed at 400 MB/s per core,
50 scalable with multi-cores CPU. It features an extremely fast decoder, with speed in
51 multiple GB/s per core, typically reaching RAM speed limits on multi-core systems.
52
53 The LZ4 compression library provides in-memory compression and decompression functions.
54 Compression can be done in:
55 - a single step (described as Simple Functions)
56 - a single step, reusing a context (described in Advanced Functions)
57 - unbounded multiple steps (described as Streaming compression)
58
59 lz4.h provides block compression functions. It gives full buffer control to user.
60 Decompressing an lz4-compressed block also requires metadata (such as compressed size).
61 Each application is free to encode such metadata in whichever way it wants.
62
63 An additional format, called LZ4 frame specification (doc/lz4_Frame_format.md),
64 take care of encoding standard metadata alongside LZ4-compressed blocks.
65 If your application requires interoperability, it's recommended to use it.
66 A library is provided to take care of it, see lz4frame.h.
67*/
68
69/*^***************************************************************
70* Export parameters
71*****************************************************************/
72/*
73* LZ4_DLL_EXPORT :
74* Enable exporting of functions when building a Windows DLL
75*/
76#if defined(LZ4_DLL_EXPORT) && (LZ4_DLL_EXPORT==1)
77# define LZ4LIB_API __declspec(dllexport)
78#elif defined(LZ4_DLL_IMPORT) && (LZ4_DLL_IMPORT==1)
79# define LZ4LIB_API __declspec(dllimport) /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/
80#else
81# define LZ4LIB_API
82#endif
83
84
85/*========== Version =========== */
86#define LZ4_VERSION_MAJOR 1 /* for breaking interface changes */
87#define LZ4_VERSION_MINOR 7 /* for new (non-breaking) interface capabilities */
88#define LZ4_VERSION_RELEASE 5 /* for tweaks, bug-fixes, or development */
89
90#define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)
91
92#define LZ4_LIB_VERSION LZ4_VERSION_MAJOR.LZ4_VERSION_MINOR.LZ4_VERSION_RELEASE
93#define LZ4_QUOTE(str) #str
94#define LZ4_EXPAND_AND_QUOTE(str) LZ4_QUOTE(str)
95#define LZ4_VERSION_STRING LZ4_EXPAND_AND_QUOTE(LZ4_LIB_VERSION)
96
97LZ4LIB_API int LZ4_versionNumber (void);
98LZ4LIB_API const char* LZ4_versionString (void);
99
100
101/*-************************************
102* Tuning parameter
103**************************************/
104/*!
105 * LZ4_MEMORY_USAGE :
106 * Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
107 * Increasing memory usage improves compression ratio
108 * Reduced memory usage can improve speed, due to cache effect
109 * Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
110 */
111#define LZ4_MEMORY_USAGE 14
112
113
114/*-************************************
115* Simple Functions
116**************************************/
117/*! LZ4_compress_default() :
118 Compresses 'sourceSize' bytes from buffer 'source'
119 into already allocated 'dest' buffer of size 'maxDestSize'.
120 Compression is guaranteed to succeed if 'maxDestSize' >= LZ4_compressBound(sourceSize).
121 It also runs faster, so it's a recommended setting.
122 If the function cannot compress 'source' into a more limited 'dest' budget,
123 compression stops *immediately*, and the function result is zero.
124 As a consequence, 'dest' content is not valid.
125 This function never writes outside 'dest' buffer, nor read outside 'source' buffer.
126 sourceSize : Max supported value is LZ4_MAX_INPUT_VALUE
127 maxDestSize : full or partial size of buffer 'dest' (which must be already allocated)
128 return : the number of bytes written into buffer 'dest' (necessarily <= maxOutputSize)
129 or 0 if compression fails */
130LZ4LIB_API int LZ4_compress_default(const char* source, char* dest, int sourceSize, int maxDestSize);
131
132/*! LZ4_decompress_safe() :
133 compressedSize : is the precise full size of the compressed block.
134 maxDecompressedSize : is the size of destination buffer, which must be already allocated.
135 return : the number of bytes decompressed into destination buffer (necessarily <= maxDecompressedSize)
136 If destination buffer is not large enough, decoding will stop and output an error code (<0).
137 If the source stream is detected malformed, the function will stop decoding and return a negative result.
138 This function is protected against buffer overflow exploits, including malicious data packets.
139 It never writes outside output buffer, nor reads outside input buffer.
140*/
141LZ4LIB_API int LZ4_decompress_safe (const char* source, char* dest, int compressedSize, int maxDecompressedSize);
142
143
144/*-************************************
145* Advanced Functions
146**************************************/
147#define LZ4_MAX_INPUT_SIZE 0x7E000000 /* 2 113 929 216 bytes */
148#define LZ4_COMPRESSBOUND(isize) ((unsigned)(isize) > (unsigned)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)
149
150/*!
151LZ4_compressBound() :
152 Provides the maximum size that LZ4 compression may output in a "worst case" scenario (input data not compressible)
153 This function is primarily useful for memory allocation purposes (destination buffer size).
154 Macro LZ4_COMPRESSBOUND() is also provided for compilation-time evaluation (stack memory allocation for example).
155 Note that LZ4_compress_default() compress faster when dest buffer size is >= LZ4_compressBound(srcSize)
156 inputSize : max supported value is LZ4_MAX_INPUT_SIZE
157 return : maximum output size in a "worst case" scenario
158 or 0, if input size is too large ( > LZ4_MAX_INPUT_SIZE)
159*/
160LZ4LIB_API int LZ4_compressBound(int inputSize);
161
162/*!
163LZ4_compress_fast() :
164 Same as LZ4_compress_default(), but allows to select an "acceleration" factor.
165 The larger the acceleration value, the faster the algorithm, but also the lesser the compression.
166 It's a trade-off. It can be fine tuned, with each successive value providing roughly +~3% to speed.
167 An acceleration value of "1" is the same as regular LZ4_compress_default()
168 Values <= 0 will be replaced by ACCELERATION_DEFAULT (see lz4.c), which is 1.
169*/
170LZ4LIB_API int LZ4_compress_fast (const char* source, char* dest, int sourceSize, int maxDestSize, int acceleration);
171
172
173/*!
174LZ4_compress_fast_extState() :
175 Same compression function, just using an externally allocated memory space to store compression state.
176 Use LZ4_sizeofState() to know how much memory must be allocated,
177 and allocate it on 8-bytes boundaries (using malloc() typically).
178 Then, provide it as 'void* state' to compression function.
179*/
180LZ4LIB_API int LZ4_sizeofState(void);
181LZ4LIB_API int LZ4_compress_fast_extState (void* state, const char* source, char* dest, int inputSize, int maxDestSize, int acceleration);
182
183
184/*!
185LZ4_compress_destSize() :
186 Reverse the logic, by compressing as much data as possible from 'source' buffer
187 into already allocated buffer 'dest' of size 'targetDestSize'.
188 This function either compresses the entire 'source' content into 'dest' if it's large enough,
189 or fill 'dest' buffer completely with as much data as possible from 'source'.
190 *sourceSizePtr : will be modified to indicate how many bytes where read from 'source' to fill 'dest'.
191 New value is necessarily <= old value.
192 return : Nb bytes written into 'dest' (necessarily <= targetDestSize)
193 or 0 if compression fails
194*/
195LZ4LIB_API int LZ4_compress_destSize (const char* source, char* dest, int* sourceSizePtr, int targetDestSize);
196
197
198/*!
199LZ4_decompress_fast() :
200 originalSize : is the original and therefore uncompressed size
201 return : the number of bytes read from the source buffer (in other words, the compressed size)
202 If the source stream is detected malformed, the function will stop decoding and return a negative result.
203 Destination buffer must be already allocated. Its size must be a minimum of 'originalSize' bytes.
204 note : This function fully respect memory boundaries for properly formed compressed data.
205 It is a bit faster than LZ4_decompress_safe().
206 However, it does not provide any protection against intentionally modified data stream (malicious input).
207 Use this function in trusted environment only (data to decode comes from a trusted source).
208*/
209LZ4LIB_API int LZ4_decompress_fast (const char* source, char* dest, int originalSize);
210
211/*!
212LZ4_decompress_safe_partial() :
213 This function decompress a compressed block of size 'compressedSize' at position 'source'
214 into destination buffer 'dest' of size 'maxDecompressedSize'.
215 The function tries to stop decompressing operation as soon as 'targetOutputSize' has been reached,
216 reducing decompression time.
217 return : the number of bytes decoded in the destination buffer (necessarily <= maxDecompressedSize)
218 Note : this number can be < 'targetOutputSize' should the compressed block to decode be smaller.
219 Always control how many bytes were decoded.
220 If the source stream is detected malformed, the function will stop decoding and return a negative result.
221 This function never writes outside of output buffer, and never reads outside of input buffer. It is therefore protected against malicious data packets
222*/
223LZ4LIB_API int LZ4_decompress_safe_partial (const char* source, char* dest, int compressedSize, int targetOutputSize, int maxDecompressedSize);
224
225
226/*-*********************************************
227* Streaming Compression Functions
228***********************************************/
229typedef union LZ4_stream_u LZ4_stream_t; /* incomplete type (defined later) */
230
231/*! LZ4_createStream() and LZ4_freeStream() :
232 * LZ4_createStream() will allocate and initialize an `LZ4_stream_t` structure.
233 * LZ4_freeStream() releases its memory.
234 */
235LZ4LIB_API LZ4_stream_t* LZ4_createStream(void);
236LZ4LIB_API int LZ4_freeStream (LZ4_stream_t* streamPtr);
237
238/*! LZ4_resetStream() :
239 * An LZ4_stream_t structure can be allocated once and re-used multiple times.
240 * Use this function to init an allocated `LZ4_stream_t` structure and start a new compression.
241 */
242LZ4LIB_API void LZ4_resetStream (LZ4_stream_t* streamPtr);
243
244/*! LZ4_loadDict() :
245 * Use this function to load a static dictionary into LZ4_stream.
246 * Any previous data will be forgotten, only 'dictionary' will remain in memory.
247 * Loading a size of 0 is allowed.
248 * Return : dictionary size, in bytes (necessarily <= 64 KB)
249 */
250LZ4LIB_API int LZ4_loadDict (LZ4_stream_t* streamPtr, const char* dictionary, int dictSize);
251
252/*! LZ4_compress_fast_continue() :
253 * Compress buffer content 'src', using data from previously compressed blocks as dictionary to improve compression ratio.
254 * Important : Previous data blocks are assumed to still be present and unmodified !
255 * 'dst' buffer must be already allocated.
256 * If maxDstSize >= LZ4_compressBound(srcSize), compression is guaranteed to succeed, and runs faster.
257 * If not, and if compressed data cannot fit into 'dst' buffer size, compression stops, and function returns a zero.
258 */
259LZ4LIB_API int LZ4_compress_fast_continue (LZ4_stream_t* streamPtr, const char* src, char* dst, int srcSize, int maxDstSize, int acceleration);
260
261/*! LZ4_saveDict() :
262 * If previously compressed data block is not guaranteed to remain available at its memory location,
263 * save it into a safer place (char* safeBuffer).
264 * Note : you don't need to call LZ4_loadDict() afterwards,
265 * dictionary is immediately usable, you can therefore call LZ4_compress_fast_continue().
266 * Return : saved dictionary size in bytes (necessarily <= dictSize), or 0 if error.
267 */
268LZ4LIB_API int LZ4_saveDict (LZ4_stream_t* streamPtr, char* safeBuffer, int dictSize);
269
270
271/*-**********************************************
272* Streaming Decompression Functions
273* Bufferless synchronous API
274************************************************/
275typedef union LZ4_streamDecode_u LZ4_streamDecode_t; /* incomplete type (defined later) */
276
277/* creation / destruction of streaming decompression tracking structure */
278LZ4LIB_API LZ4_streamDecode_t* LZ4_createStreamDecode(void);
279LZ4LIB_API int LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream);
280
281/*! LZ4_setStreamDecode() :
282 * Use this function to instruct where to find the dictionary.
283 * Setting a size of 0 is allowed (same effect as reset).
284 * @return : 1 if OK, 0 if error
285 */
286LZ4LIB_API int LZ4_setStreamDecode (LZ4_streamDecode_t* LZ4_streamDecode, const char* dictionary, int dictSize);
287
288/*!
289LZ4_decompress_*_continue() :
290 These decoding functions allow decompression of multiple blocks in "streaming" mode.
291 Previously decoded blocks *must* remain available at the memory position where they were decoded (up to 64 KB)
292 In the case of a ring buffers, decoding buffer must be either :
293 - Exactly same size as encoding buffer, with same update rule (block boundaries at same positions)
294 In which case, the decoding & encoding ring buffer can have any size, including very small ones ( < 64 KB).
295 - Larger than encoding buffer, by a minimum of maxBlockSize more bytes.
296 maxBlockSize is implementation dependent. It's the maximum size you intend to compress into a single block.
297 In which case, encoding and decoding buffers do not need to be synchronized,
298 and encoding ring buffer can have any size, including small ones ( < 64 KB).
299 - _At least_ 64 KB + 8 bytes + maxBlockSize.
300 In which case, encoding and decoding buffers do not need to be synchronized,
301 and encoding ring buffer can have any size, including larger than decoding buffer.
302 Whenever these conditions are not possible, save the last 64KB of decoded data into a safe buffer,
303 and indicate where it is saved using LZ4_setStreamDecode()
304*/
305LZ4LIB_API int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int compressedSize, int maxDecompressedSize);
306LZ4LIB_API int LZ4_decompress_fast_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int originalSize);
307
308
309/*! LZ4_decompress_*_usingDict() :
310 * These decoding functions work the same as
311 * a combination of LZ4_setStreamDecode() followed by LZ4_decompress_*_continue()
312 * They are stand-alone, and don't need an LZ4_streamDecode_t structure.
313 */
314LZ4LIB_API int LZ4_decompress_safe_usingDict (const char* source, char* dest, int compressedSize, int maxDecompressedSize, const char* dictStart, int dictSize);
315LZ4LIB_API int LZ4_decompress_fast_usingDict (const char* source, char* dest, int originalSize, const char* dictStart, int dictSize);
316
317
318/*^**********************************************
319 * !!!!!! STATIC LINKING ONLY !!!!!!
320 ***********************************************/
321/*-************************************
322 * Private definitions
323 **************************************
324 * Do not use these definitions.
325 * They are exposed to allow static allocation of `LZ4_stream_t` and `LZ4_streamDecode_t`.
326 * Using these definitions will expose code to API and/or ABI break in future versions of the library.
327 **************************************/
328#define LZ4_HASHLOG (LZ4_MEMORY_USAGE-2)
329#define LZ4_HASHTABLESIZE (1 << LZ4_MEMORY_USAGE)
330#define LZ4_HASH_SIZE_U32 (1 << LZ4_HASHLOG) /* required as macro for static allocation */
331
332#if defined(__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
333#include <stdint.h>
334
335typedef struct {
336 uint32_t hashTable[LZ4_HASH_SIZE_U32];
337 uint32_t currentOffset;
338 uint32_t initCheck;
339 const uint8_t* dictionary;
340 uint8_t* bufferStart; /* obsolete, used for slideInputBuffer */
341 uint32_t dictSize;
342} LZ4_stream_t_internal;
343
344typedef struct {
345 const uint8_t* externalDict;
346 size_t extDictSize;
347 const uint8_t* prefixEnd;
348 size_t prefixSize;
349} LZ4_streamDecode_t_internal;
350
351#else
352
353typedef struct {
354 unsigned int hashTable[LZ4_HASH_SIZE_U32];
355 unsigned int currentOffset;
356 unsigned int initCheck;
357 const unsigned char* dictionary;
358 unsigned char* bufferStart; /* obsolete, used for slideInputBuffer */
359 unsigned int dictSize;
360} LZ4_stream_t_internal;
361
362typedef struct {
363 const unsigned char* externalDict;
364 size_t extDictSize;
365 const unsigned char* prefixEnd;
366 size_t prefixSize;
367} LZ4_streamDecode_t_internal;
368
369#endif
370
371/*!
372 * LZ4_stream_t :
373 * information structure to track an LZ4 stream.
374 * init this structure before first use.
375 * note : only use in association with static linking !
376 * this definition is not API/ABI safe,
377 * and may change in a future version !
378 */
379#define LZ4_STREAMSIZE_U64 ((1 << (LZ4_MEMORY_USAGE-3)) + 4)
380#define LZ4_STREAMSIZE (LZ4_STREAMSIZE_U64 * sizeof(unsigned long long))
381union LZ4_stream_u {
382 unsigned long long table[LZ4_STREAMSIZE_U64];
383 LZ4_stream_t_internal internal_donotuse;
384} ; /* previously typedef'd to LZ4_stream_t */
385
386
387/*!
388 * LZ4_streamDecode_t :
389 * information structure to track an LZ4 stream during decompression.
390 * init this structure using LZ4_setStreamDecode (or memset()) before first use
391 * note : only use in association with static linking !
392 * this definition is not API/ABI safe,
393 * and may change in a future version !
394 */
395#define LZ4_STREAMDECODESIZE_U64 4
396#define LZ4_STREAMDECODESIZE (LZ4_STREAMDECODESIZE_U64 * sizeof(unsigned long long))
397union LZ4_streamDecode_u {
398 unsigned long long table[LZ4_STREAMDECODESIZE_U64];
399 LZ4_streamDecode_t_internal internal_donotuse;
400} ; /* previously typedef'd to LZ4_streamDecode_t */
401
402
403/*=************************************
404* Obsolete Functions
405**************************************/
406/* Deprecation warnings */
407/* Should these warnings be a problem,
408 it is generally possible to disable them,
409 typically with -Wno-deprecated-declarations for gcc
410 or _CRT_SECURE_NO_WARNINGS in Visual.
411 Otherwise, it's also possible to define LZ4_DISABLE_DEPRECATE_WARNINGS */
412#ifdef LZ4_DISABLE_DEPRECATE_WARNINGS
413# define LZ4_DEPRECATED(message) /* disable deprecation warnings */
414#else
415# define LZ4_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
416# if defined (__cplusplus) && (__cplusplus >= 201402) /* C++14 or greater */
417# define LZ4_DEPRECATED(message) [[deprecated(message)]]
418# elif (LZ4_GCC_VERSION >= 405) || defined(__clang__)
419# define LZ4_DEPRECATED(message) __attribute__((deprecated(message)))
420# elif (LZ4_GCC_VERSION >= 301)
421# define LZ4_DEPRECATED(message) __attribute__((deprecated))
422# elif defined(_MSC_VER)
423# define LZ4_DEPRECATED(message) __declspec(deprecated(message))
424# else
425# pragma message("WARNING: You need to implement LZ4_DEPRECATED for this compiler")
426# define LZ4_DEPRECATED(message)
427# endif
428#endif /* LZ4_DISABLE_DEPRECATE_WARNINGS */
429
430/* Obsolete compression functions */
431LZ4_DEPRECATED("use LZ4_compress_default() instead") int LZ4_compress (const char* source, char* dest, int sourceSize);
432LZ4_DEPRECATED("use LZ4_compress_default() instead") int LZ4_compress_limitedOutput (const char* source, char* dest, int sourceSize, int maxOutputSize);
433LZ4_DEPRECATED("use LZ4_compress_fast_extState() instead") int LZ4_compress_withState (void* state, const char* source, char* dest, int inputSize);
434LZ4_DEPRECATED("use LZ4_compress_fast_extState() instead") int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize);
435LZ4_DEPRECATED("use LZ4_compress_fast_continue() instead") int LZ4_compress_continue (LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize);
436LZ4_DEPRECATED("use LZ4_compress_fast_continue() instead") int LZ4_compress_limitedOutput_continue (LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize, int maxOutputSize);
437
438/* Obsolete decompression functions */
439/* These function names are completely deprecated and must no longer be used.
440 They are only provided in lz4.c for compatibility with older programs.
441 - LZ4_uncompress is the same as LZ4_decompress_fast
442 - LZ4_uncompress_unknownOutputSize is the same as LZ4_decompress_safe
443 These function prototypes are now disabled; uncomment them only if you really need them.
444 It is highly recommended to stop using these prototypes and migrate to maintained ones */
445/* int LZ4_uncompress (const char* source, char* dest, int outputSize); */
446/* int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize); */
447
448/* Obsolete streaming functions; use new streaming interface whenever possible */
449LZ4_DEPRECATED("use LZ4_createStream() instead") void* LZ4_create (char* inputBuffer);
450LZ4_DEPRECATED("use LZ4_createStream() instead") int LZ4_sizeofStreamState(void);
451LZ4_DEPRECATED("use LZ4_resetStream() instead") int LZ4_resetStreamState(void* state, char* inputBuffer);
452LZ4_DEPRECATED("use LZ4_saveDict() instead") char* LZ4_slideInputBuffer (void* state);
453
454/* Obsolete streaming decoding functions */
455LZ4_DEPRECATED("use LZ4_decompress_safe_usingDict() instead") int LZ4_decompress_safe_withPrefix64k (const char* src, char* dst, int compressedSize, int maxDstSize);
456LZ4_DEPRECATED("use LZ4_decompress_fast_usingDict() instead") int LZ4_decompress_fast_withPrefix64k (const char* src, char* dst, int originalSize);
457
458
459#if defined (__cplusplus)
460}
461#endif
462
463#endif /* LZ4_H_2983827168210 */
464