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lz4.h File Reference
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Classes

struct  LZ4_stream_t
 
struct  LZ4_streamDecode_t
 

Macros

#define LZ4_VERSION_MAJOR   1 /* for breaking interface changes */
 
#define LZ4_VERSION_MINOR   7 /* for new (non-breaking) interface capabilities */
 
#define LZ4_VERSION_RELEASE   1 /* for tweaks, bug-fixes, or development */
 
#define LZ4_VERSION_NUMBER   (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)
 
#define LZ4_MEMORY_USAGE   14
 
#define LZ4_MAX_INPUT_SIZE   0x7E000000 /* 2 113 929 216 bytes */
 
#define LZ4_COMPRESSBOUND(isize)   ((unsigned)(isize) > (unsigned)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)
 
#define LZ4_STREAMSIZE_U64   ((1 << (LZ4_MEMORY_USAGE-3)) + 4)
 
#define LZ4_STREAMSIZE   (LZ4_STREAMSIZE_U64 * sizeof(long long))
 
#define LZ4_STREAMDECODESIZE_U64   4
 
#define LZ4_STREAMDECODESIZE   (LZ4_STREAMDECODESIZE_U64 * sizeof(unsigned long long))
 
#define LZ4_DEPRECATE_WARNING_DEFBLOCK
 
#define LZ4_GCC_VERSION   (__GNUC__ * 100 + __GNUC_MINOR__)
 
#define LZ4_DEPRECATED(message)
 

Functions

int LZ4_versionNumber (void)
 
int LZ4_compress_default (const char *source, char *dest, int sourceSize, int maxDestSize)
 
int LZ4_decompress_safe (const char *source, char *dest, int compressedSize, int maxDecompressedSize)
 
int LZ4_compressBound (int inputSize)
 
int LZ4_compress_fast (const char *source, char *dest, int sourceSize, int maxDestSize, int acceleration)
 
int LZ4_sizeofState (void)
 
int LZ4_compress_fast_extState (void *state, const char *source, char *dest, int inputSize, int maxDestSize, int acceleration)
 
int LZ4_compress_destSize (const char *source, char *dest, int *sourceSizePtr, int targetDestSize)
 
int LZ4_decompress_fast (const char *source, char *dest, int originalSize)
 
int LZ4_decompress_safe_partial (const char *source, char *dest, int compressedSize, int targetOutputSize, int maxDecompressedSize)
 
void LZ4_resetStream (LZ4_stream_t *streamPtr)
 
LZ4_stream_t * LZ4_createStream (void)
 
int LZ4_freeStream (LZ4_stream_t *streamPtr)
 
int LZ4_loadDict (LZ4_stream_t *streamPtr, const char *dictionary, int dictSize)
 
int LZ4_compress_fast_continue (LZ4_stream_t *streamPtr, const char *src, char *dst, int srcSize, int maxDstSize, int acceleration)
 
int LZ4_saveDict (LZ4_stream_t *streamPtr, char *safeBuffer, int dictSize)
 
LZ4_streamDecode_t * LZ4_createStreamDecode (void)
 
int LZ4_freeStreamDecode (LZ4_streamDecode_t *LZ4_stream)
 
int LZ4_setStreamDecode (LZ4_streamDecode_t *LZ4_streamDecode, const char *dictionary, int dictSize)
 
int LZ4_decompress_safe_continue (LZ4_streamDecode_t *LZ4_streamDecode, const char *source, char *dest, int compressedSize, int maxDecompressedSize)
 
int LZ4_decompress_fast_continue (LZ4_streamDecode_t *LZ4_streamDecode, const char *source, char *dest, int originalSize)
 
int LZ4_decompress_safe_usingDict (const char *source, char *dest, int compressedSize, int maxDecompressedSize, const char *dictStart, int dictSize)
 
int LZ4_decompress_fast_usingDict (const char *source, char *dest, int originalSize, const char *dictStart, int dictSize)
 
int LZ4_compress (const char *source, char *dest, int sourceSize)
 
int LZ4_compress_limitedOutput (const char *source, char *dest, int sourceSize, int maxOutputSize)
 
int LZ4_compress_withState (void *state, const char *source, char *dest, int inputSize)
 
int LZ4_compress_limitedOutput_withState (void *state, const char *source, char *dest, int inputSize, int maxOutputSize)
 
int LZ4_compress_continue (LZ4_stream_t *LZ4_streamPtr, const char *source, char *dest, int inputSize)
 
int LZ4_compress_limitedOutput_continue (LZ4_stream_t *LZ4_streamPtr, const char *source, char *dest, int inputSize, int maxOutputSize)
 
void * LZ4_create (char *inputBuffer)
 
int LZ4_sizeofStreamState (void)
 
int LZ4_resetStreamState (void *state, char *inputBuffer)
 
char * LZ4_slideInputBuffer (void *state)
 
int LZ4_decompress_safe_withPrefix64k (const char *src, char *dst, int compressedSize, int maxDstSize)
 
int LZ4_decompress_fast_withPrefix64k (const char *src, char *dst, int originalSize)
 

Macro Definition Documentation

◆ LZ4_COMPRESSBOUND

#define LZ4_COMPRESSBOUND (   isize)    ((unsigned)(isize) > (unsigned)LZ4_MAX_INPUT_SIZE ? 0 : (isize) + ((isize)/255) + 16)

Definition at line 109 of file lz4.h.

◆ LZ4_DEPRECATE_WARNING_DEFBLOCK

#define LZ4_DEPRECATE_WARNING_DEFBLOCK

Definition at line 317 of file lz4.h.

◆ LZ4_DEPRECATED

#define LZ4_DEPRECATED (   message)

Definition at line 327 of file lz4.h.

◆ LZ4_GCC_VERSION

#define LZ4_GCC_VERSION   (__GNUC__ * 100 + __GNUC_MINOR__)

Definition at line 318 of file lz4.h.

◆ LZ4_MAX_INPUT_SIZE

#define LZ4_MAX_INPUT_SIZE   0x7E000000 /* 2 113 929 216 bytes */

Definition at line 108 of file lz4.h.

◆ LZ4_MEMORY_USAGE

#define LZ4_MEMORY_USAGE   14

Definition at line 69 of file lz4.h.

◆ LZ4_STREAMDECODESIZE

#define LZ4_STREAMDECODESIZE   (LZ4_STREAMDECODESIZE_U64 * sizeof(unsigned long long))

Definition at line 251 of file lz4.h.

◆ LZ4_STREAMDECODESIZE_U64

#define LZ4_STREAMDECODESIZE_U64   4

Definition at line 250 of file lz4.h.

◆ LZ4_STREAMSIZE

#define LZ4_STREAMSIZE   (LZ4_STREAMSIZE_U64 * sizeof(long long))

Definition at line 191 of file lz4.h.

◆ LZ4_STREAMSIZE_U64

#define LZ4_STREAMSIZE_U64   ((1 << (LZ4_MEMORY_USAGE-3)) + 4)

Definition at line 190 of file lz4.h.

◆ LZ4_VERSION_MAJOR

#define LZ4_VERSION_MAJOR   1 /* for breaking interface changes */

Definition at line 53 of file lz4.h.

◆ LZ4_VERSION_MINOR

#define LZ4_VERSION_MINOR   7 /* for new (non-breaking) interface capabilities */

Definition at line 54 of file lz4.h.

◆ LZ4_VERSION_NUMBER

#define LZ4_VERSION_NUMBER   (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)

Definition at line 56 of file lz4.h.

◆ LZ4_VERSION_RELEASE

#define LZ4_VERSION_RELEASE   1 /* for tweaks, bug-fixes, or development */

Definition at line 55 of file lz4.h.

Function Documentation

◆ LZ4_compress()

int LZ4_compress ( const char *  source,
char *  dest,
int  sourceSize 
)

Definition at line 1456 of file lz4.c.

References LZ4_compress_default(), and LZ4_compressBound().

◆ LZ4_compress_continue()

int LZ4_compress_continue ( LZ4_stream_t *  LZ4_streamPtr,
const char *  source,
char *  dest,
int  inputSize 
)

Definition at line 1460 of file lz4.c.

References LZ4_compress_fast_continue(), and LZ4_compressBound().

◆ LZ4_compress_default()

int LZ4_compress_default ( const char *  source,
char *  dest,
int  sourceSize,
int  maxDestSize 
)

Definition at line 697 of file lz4.c.

References LZ4_compress_fast().

Referenced by LZ4_compress(), and LZ4_compress_limitedOutput().

◆ LZ4_compress_destSize()

int LZ4_compress_destSize ( const char *  source,
char *  dest,
int *  sourceSizePtr,
int  targetDestSize 
)

Definition at line 912 of file lz4.c.

References ALLOCATOR, FREEMEM, LZ4_compress_destSize_extState(), and result.

◆ LZ4_compress_fast()

int LZ4_compress_fast ( const char *  source,
char *  dest,
int  sourceSize,
int  maxDestSize,
int  acceleration 
)

Definition at line 679 of file lz4.c.

References ALLOCATOR, FREEMEM, LZ4_compress_fast_extState(), and result.

Referenced by LZ4_compress_default().

◆ LZ4_compress_fast_continue()

int LZ4_compress_fast_continue ( LZ4_stream_t *  streamPtr,
const char *  src,
char *  dst,
int  srcSize,
int  maxDstSize,
int  acceleration 
)

Definition at line 1011 of file lz4.c.

References ACCELERATION_DEFAULT, byU32, LZ4_stream_t_internal::currentOffset, LZ4_stream_t_internal::dictionary, LZ4_stream_t_internal::dictSize, dictSmall, LZ4_stream_t_internal::initCheck, KB, limitedOutput, LZ4_compress_generic(), LZ4_renormDictT(), noDictIssue, result, usingExtDict, and withPrefix64k.

Referenced by LZ4_compress_continue(), and LZ4_compress_limitedOutput_continue().

◆ LZ4_compress_fast_extState()

int LZ4_compress_fast_extState ( void *  state,
const char *  source,
char *  dest,
int  inputSize,
int  maxDestSize,
int  acceleration 
)

Definition at line 657 of file lz4.c.

References ACCELERATION_DEFAULT, byPtr, byU16, byU32, limitedOutput, LZ4_64bits(), LZ4_64Klimit, LZ4_compress_generic(), LZ4_compressBound(), LZ4_resetStream(), noDict, noDictIssue, and notLimited.

Referenced by LZ4_compress_destSize_extState(), LZ4_compress_fast(), LZ4_compress_limitedOutput_withState(), and LZ4_compress_withState().

◆ LZ4_compress_limitedOutput()

int LZ4_compress_limitedOutput ( const char *  source,
char *  dest,
int  sourceSize,
int  maxOutputSize 
)

Definition at line 1455 of file lz4.c.

References LZ4_compress_default().

◆ LZ4_compress_limitedOutput_continue()

int LZ4_compress_limitedOutput_continue ( LZ4_stream_t *  LZ4_streamPtr,
const char *  source,
char *  dest,
int  inputSize,
int  maxOutputSize 
)

Definition at line 1459 of file lz4.c.

References LZ4_compress_fast_continue().

◆ LZ4_compress_limitedOutput_withState()

int LZ4_compress_limitedOutput_withState ( void *  state,
const char *  source,
char *  dest,
int  inputSize,
int  maxOutputSize 
)

Definition at line 1457 of file lz4.c.

References LZ4_compress_fast_extState().

◆ LZ4_compress_withState()

int LZ4_compress_withState ( void *  state,
const char *  source,
char *  dest,
int  inputSize 
)

Definition at line 1458 of file lz4.c.

References LZ4_compress_fast_extState(), and LZ4_compressBound().

◆ LZ4_compressBound()

int LZ4_compressBound ( int  inputSize)

Definition at line 372 of file lz4.c.

References LZ4_COMPRESSBOUND.

Referenced by LZ4_compress(), LZ4_compress_continue(), LZ4_compress_destSize_extState(), LZ4_compress_fast_extState(), LZ4_compress_HC_continue(), LZ4_compress_HC_extStateHC(), LZ4_compress_withState(), LZ4_compressHC(), LZ4_compressHC2(), LZ4_compressHC2_withStateHC(), LZ4_compressHC_continue(), and LZ4_compressHC_withStateHC().

◆ LZ4_create()

void* LZ4_create ( char *  inputBuffer)

Definition at line 1489 of file lz4.c.

References ALLOCATOR, LZ4_init(), and LZ4_STREAMSIZE_U64.

◆ LZ4_createStream()

LZ4_stream_t* LZ4_createStream ( void  )

Definition at line 935 of file lz4.c.

References ALLOCATOR, LZ4_resetStream(), LZ4_STATIC_ASSERT, LZ4_STREAMSIZE, and LZ4_STREAMSIZE_U64.

◆ LZ4_createStreamDecode()

LZ4_streamDecode_t* LZ4_createStreamDecode ( void  )

Definition at line 1319 of file lz4.c.

References ALLOCATOR.

◆ LZ4_decompress_fast()

int LZ4_decompress_fast ( const char *  source,
char *  dest,
int  originalSize 
)

Definition at line 1298 of file lz4.c.

References endOnOutputSize, full, KB, LZ4_decompress_generic(), NULL, and withPrefix64k.

Referenced by LZ4_uncompress().

◆ LZ4_decompress_fast_continue()

int LZ4_decompress_fast_continue ( LZ4_streamDecode_t *  LZ4_streamDecode,
const char *  source,
char *  dest,
int  originalSize 
)

Definition at line 1384 of file lz4.c.

References endOnOutputSize, LZ4_streamDecode_t_internal::extDictSize, LZ4_streamDecode_t_internal::externalDict, full, LZ4_decompress_generic(), LZ4_streamDecode_t_internal::prefixEnd, LZ4_streamDecode_t_internal::prefixSize, result, and usingExtDict.

◆ LZ4_decompress_fast_usingDict()

int LZ4_decompress_fast_usingDict ( const char *  source,
char *  dest,
int  originalSize,
const char *  dictStart,
int  dictSize 
)

Definition at line 1439 of file lz4.c.

References LZ4_decompress_usingDict_generic().

◆ LZ4_decompress_fast_withPrefix64k()

int LZ4_decompress_fast_withPrefix64k ( const char *  src,
char *  dst,
int  originalSize 
)

Definition at line 1510 of file lz4.c.

References endOnOutputSize, full, KB, LZ4_decompress_generic(), NULL, and withPrefix64k.

◆ LZ4_decompress_safe()

int LZ4_decompress_safe ( const char *  source,
char *  dest,
int  compressedSize,
int  maxDecompressedSize 
)

Definition at line 1288 of file lz4.c.

References endOnInputSize, full, LZ4_decompress_generic(), noDict, and NULL.

Referenced by LZ4_uncompress_unknownOutputSize().

◆ LZ4_decompress_safe_continue()

int LZ4_decompress_safe_continue ( LZ4_streamDecode_t *  LZ4_streamDecode,
const char *  source,
char *  dest,
int  compressedSize,
int  maxDecompressedSize 
)

Definition at line 1355 of file lz4.c.

References endOnInputSize, LZ4_streamDecode_t_internal::extDictSize, LZ4_streamDecode_t_internal::externalDict, full, LZ4_decompress_generic(), LZ4_streamDecode_t_internal::prefixEnd, LZ4_streamDecode_t_internal::prefixSize, result, and usingExtDict.

◆ LZ4_decompress_safe_partial()

int LZ4_decompress_safe_partial ( const char *  source,
char *  dest,
int  compressedSize,
int  targetOutputSize,
int  maxDecompressedSize 
)

Definition at line 1293 of file lz4.c.

References endOnInputSize, LZ4_decompress_generic(), noDict, NULL, and partial.

◆ LZ4_decompress_safe_usingDict()

int LZ4_decompress_safe_usingDict ( const char *  source,
char *  dest,
int  compressedSize,
int  maxDecompressedSize,
const char *  dictStart,
int  dictSize 
)

Definition at line 1434 of file lz4.c.

References LZ4_decompress_usingDict_generic().

◆ LZ4_decompress_safe_withPrefix64k()

int LZ4_decompress_safe_withPrefix64k ( const char *  src,
char *  dst,
int  compressedSize,
int  maxDstSize 
)

Definition at line 1505 of file lz4.c.

References endOnInputSize, full, KB, LZ4_decompress_generic(), NULL, and withPrefix64k.

◆ LZ4_freeStream()

int LZ4_freeStream ( LZ4_stream_t *  streamPtr)

Definition at line 948 of file lz4.c.

References FREEMEM.

◆ LZ4_freeStreamDecode()

int LZ4_freeStreamDecode ( LZ4_streamDecode_t *  LZ4_stream)

Definition at line 1325 of file lz4.c.

References FREEMEM.

◆ LZ4_loadDict()

int LZ4_loadDict ( LZ4_stream_t *  streamPtr,
const char *  dictionary,
int  dictSize 
)

Definition at line 956 of file lz4.c.

References byU32, LZ4_stream_t_internal::currentOffset, LZ4_stream_t_internal::dictionary, LZ4_stream_t_internal::dictSize, GB, HASH_UNIT, LZ4_stream_t_internal::hashTable, LZ4_stream_t_internal::initCheck, KB, LZ4_putPosition(), LZ4_resetStream(), and NULL.

◆ LZ4_resetStream()

void LZ4_resetStream ( LZ4_stream_t *  streamPtr)

Definition at line 943 of file lz4.c.

References MEM_INIT.

Referenced by LZ4_compress_destSize_extState(), LZ4_compress_fast_extState(), LZ4_compress_fast_force(), LZ4_createStream(), and LZ4_loadDict().

◆ LZ4_resetStreamState()

int LZ4_resetStreamState ( void *  state,
char *  inputBuffer 
)

Definition at line 1482 of file lz4.c.

References LZ4_init().

◆ LZ4_saveDict()

int LZ4_saveDict ( LZ4_stream_t *  streamPtr,
char *  safeBuffer,
int  dictSize 
)

Definition at line 1083 of file lz4.c.

References LZ4_stream_t_internal::dictionary, LZ4_stream_t_internal::dictSize, and KB.

Referenced by LZ4_slideInputBuffer().

◆ LZ4_setStreamDecode()

int LZ4_setStreamDecode ( LZ4_streamDecode_t *  LZ4_streamDecode,
const char *  dictionary,
int  dictSize 
)

Definition at line 1338 of file lz4.c.

References LZ4_streamDecode_t_internal::extDictSize, LZ4_streamDecode_t_internal::externalDict, NULL, LZ4_streamDecode_t_internal::prefixEnd, and LZ4_streamDecode_t_internal::prefixSize.

◆ LZ4_sizeofState()

int LZ4_sizeofState ( void  )

Definition at line 373 of file lz4.c.

References LZ4_STREAMSIZE.

◆ LZ4_sizeofStreamState()

int LZ4_sizeofStreamState ( void  )

Definition at line 1474 of file lz4.c.

References LZ4_STREAMSIZE.

◆ LZ4_slideInputBuffer()

char* LZ4_slideInputBuffer ( void *  state)

Definition at line 1496 of file lz4.c.

References LZ4_stream_t_internal::bufferStart, KB, and LZ4_saveDict().

◆ LZ4_versionNumber()

int LZ4_versionNumber ( void  )

Definition at line 371 of file lz4.c.

References LZ4_VERSION_NUMBER.