#include <stdlib.h>
#include <string.h>
#include "lz4frame_static.h"
#include "lz4.h"
#include "lz4hc.h"
#include "xxhash.h"

Include dependency graph for lz4frame.c:

Go to the source code of this file.

Data Structures
struct	LZ4F_cctx_s

struct	LZ4F_dctx_s

Macros
#define	ALLOCATOR(s) calloc(1,s)

#define	FREEMEM free

#define	MEM_INIT memset

#define	KB *(1<<10)

#define	MB *(1<<20)

#define	GB *(1<<30)

#define	_1BIT 0x01

#define	_2BITS 0x03

#define	_3BITS 0x07

#define	_4BITS 0x0F

#define	_8BITS 0xFF

#define	LZ4F_MAGIC_SKIPPABLE_START 0x184D2A50U

#define	LZ4F_MAGICNUMBER 0x184D2204U

#define	LZ4F_BLOCKUNCOMPRESSED_FLAG 0x80000000U

#define	LZ4F_BLOCKSIZEID_DEFAULT LZ4F_max64KB

#define	LZ4F_GENERATE_STRING(STRING) #STRING,

Typedefs
typedef unsigned char	BYTE

typedef unsigned short	U16

typedef unsigned int	U32

typedef signed int	S32

typedef unsigned long long	U64

typedef struct LZ4F_cctx_s	LZ4F_cctx_t

typedef struct LZ4F_dctx_s	LZ4F_dctx_t

typedef int(*	compressFunc_t) (void ctx, const char src, char *dst, int srcSize, int dstSize, int level)

Enumerations
enum	LZ4F_lastBlockStatus { notDone , fromTmpBuffer , fromSrcBuffer }

enum	dStage_t { dstage_getHeader =0 , dstage_storeHeader , dstage_getCBlockSize , dstage_storeCBlockSize , dstage_copyDirect , dstage_getCBlock , dstage_storeCBlock , dstage_decodeCBlock , dstage_decodeCBlock_intoDst , dstage_decodeCBlock_intoTmp , dstage_flushOut , dstage_getSuffix , dstage_storeSuffix , dstage_getSFrameSize , dstage_storeSFrameSize , dstage_skipSkippable }

Functions
unsigned	LZ4F_isError (LZ4F_errorCode_t code)

const char *	LZ4F_getErrorName (LZ4F_errorCode_t code)

static size_t	LZ4F_getBlockSize (unsigned blockSizeID)

static U32	LZ4F_readLE32 (const BYTE *srcPtr)

static void	LZ4F_writeLE32 (BYTE *dstPtr, U32 value32)

static U64	LZ4F_readLE64 (const BYTE *srcPtr)

static void	LZ4F_writeLE64 (BYTE *dstPtr, U64 value64)

static BYTE	LZ4F_headerChecksum (const void *header, size_t length)

static LZ4F_blockSizeID_t	LZ4F_optimalBSID (const LZ4F_blockSizeID_t requestedBSID, const size_t srcSize)

size_t	LZ4F_compressFrameBound (size_t srcSize, const LZ4F_preferences_t *preferencesPtr)

size_t	LZ4F_compressFrame (void dstBuffer, size_t dstMaxSize, const void srcBuffer, size_t srcSize, const LZ4F_preferences_t *preferencesPtr)

LZ4F_errorCode_t	LZ4F_createCompressionContext (LZ4F_compressionContext_t *LZ4F_compressionContextPtr, unsigned version)

LZ4F_errorCode_t	LZ4F_freeCompressionContext (LZ4F_compressionContext_t LZ4F_compressionContext)

size_t	LZ4F_compressBegin (LZ4F_compressionContext_t compressionContext, void dstBuffer, size_t dstMaxSize, const LZ4F_preferences_t preferencesPtr)

size_t	LZ4F_compressBound (size_t srcSize, const LZ4F_preferences_t *preferencesPtr)

static size_t	LZ4F_compressBlock (void dst, const void src, size_t srcSize, compressFunc_t compress, void *lz4ctx, int level)

static int	LZ4F_localLZ4_compress_limitedOutput_withState (void ctx, const char src, char *dst, int srcSize, int dstSize, int level)

static int	LZ4F_localLZ4_compress_limitedOutput_continue (void ctx, const char src, char *dst, int srcSize, int dstSize, int level)

static int	LZ4F_localLZ4_compressHC_limitedOutput_continue (void ctx, const char src, char *dst, int srcSize, int dstSize, int level)

static compressFunc_t	LZ4F_selectCompression (LZ4F_blockMode_t blockMode, int level)

static int	LZ4F_localSaveDict (LZ4F_cctx_t *cctxPtr)

size_t	LZ4F_compressUpdate (LZ4F_compressionContext_t compressionContext, void dstBuffer, size_t dstMaxSize, const void srcBuffer, size_t srcSize, const LZ4F_compressOptions_t *compressOptionsPtr)

size_t	LZ4F_flush (LZ4F_compressionContext_t compressionContext, void dstBuffer, size_t dstMaxSize, const LZ4F_compressOptions_t compressOptionsPtr)

size_t	LZ4F_compressEnd (LZ4F_compressionContext_t compressionContext, void dstBuffer, size_t dstMaxSize, const LZ4F_compressOptions_t compressOptionsPtr)

LZ4F_errorCode_t	LZ4F_createDecompressionContext (LZ4F_decompressionContext_t *LZ4F_decompressionContextPtr, unsigned versionNumber)

LZ4F_errorCode_t	LZ4F_freeDecompressionContext (LZ4F_decompressionContext_t LZ4F_decompressionContext)

static size_t	LZ4F_decodeHeader (LZ4F_dctx_t dctxPtr, const void srcVoidPtr, size_t srcSize)

LZ4F_errorCode_t	LZ4F_getFrameInfo (LZ4F_decompressionContext_t dCtx, LZ4F_frameInfo_t frameInfoPtr, const void srcBuffer, size_t *srcSizePtr)

static int	LZ4F_decompress_safe (const char source, char dest, int compressedSize, int maxDecompressedSize, const char *dictStart, int dictSize)

static void	LZ4F_updateDict (LZ4F_dctx_t dctxPtr, const BYTE dstPtr, size_t dstSize, const BYTE *dstPtr0, unsigned withinTmp)

size_t	LZ4F_decompress (LZ4F_decompressionContext_t decompressionContext, void dstBuffer, size_t dstSizePtr, const void srcBuffer, size_t srcSizePtr, const LZ4F_decompressOptions_t *decompressOptionsPtr)

Variables
static const size_t	minFHSize = 7

static const size_t	maxFHSize = 15

static const size_t	BHSize = 4

static const int	minHClevel = 3

static const char *	LZ4F_errorStrings [] = { LZ4F_LIST_ERRORS(LZ4F_GENERATE_STRING) }

Macro Definition Documentation

◆ _1BIT

#define _1BIT 0x01

Definition at line 94 of file lz4frame.c.

◆ _2BITS

#define _2BITS 0x03

Definition at line 95 of file lz4frame.c.

◆ _3BITS

#define _3BITS 0x07

Definition at line 96 of file lz4frame.c.

◆ _4BITS

#define _4BITS 0x0F

Definition at line 97 of file lz4frame.c.

◆ _8BITS

#define _8BITS 0xFF

Definition at line 98 of file lz4frame.c.

◆ ALLOCATOR

#define ALLOCATOR ( s ) calloc(1,s)

Definition at line 53 of file lz4frame.c.

◆ FREEMEM

#define FREEMEM free

Definition at line 54 of file lz4frame.c.

◆ GB

#define GB *(1<<30)

Definition at line 92 of file lz4frame.c.

◆ KB

#define KB *(1<<10)

Definition at line 90 of file lz4frame.c.

◆ LZ4F_BLOCKSIZEID_DEFAULT

#define LZ4F_BLOCKSIZEID_DEFAULT LZ4F_max64KB

Definition at line 103 of file lz4frame.c.

◆ LZ4F_BLOCKUNCOMPRESSED_FLAG

#define LZ4F_BLOCKUNCOMPRESSED_FLAG 0x80000000U

Definition at line 102 of file lz4frame.c.

◆ LZ4F_GENERATE_STRING

#define LZ4F_GENERATE_STRING ( STRING ) #STRING,

Definition at line 156 of file lz4frame.c.

◆ LZ4F_MAGIC_SKIPPABLE_START

#define LZ4F_MAGIC_SKIPPABLE_START 0x184D2A50U

Definition at line 100 of file lz4frame.c.

◆ LZ4F_MAGICNUMBER

#define LZ4F_MAGICNUMBER 0x184D2204U

Definition at line 101 of file lz4frame.c.

◆ MB

#define MB *(1<<20)

Definition at line 91 of file lz4frame.c.

◆ MEM_INIT

#define MEM_INIT memset

Definition at line 56 of file lz4frame.c.

Typedef Documentation

◆ BYTE

typedef unsigned char BYTE

Definition at line 79 of file lz4frame.c.

◆ compressFunc_t

typedef int(* compressFunc_t) (void *ctx, const char *src, char *dst, int srcSize, int dstSize, int level)

Definition at line 496 of file lz4frame.c.

◆ LZ4F_cctx_t

typedef struct LZ4F_cctx_s LZ4F_cctx_t

◆ LZ4F_dctx_t

typedef struct LZ4F_dctx_s LZ4F_dctx_t

◆ S32

typedef signed int S32

Definition at line 82 of file lz4frame.c.

◆ U16

typedef unsigned short U16

Definition at line 80 of file lz4frame.c.

◆ U32

typedef unsigned int U32

Definition at line 81 of file lz4frame.c.

◆ U64

typedef unsigned long long U64

Definition at line 83 of file lz4frame.c.

Enumeration Type Documentation

◆ dStage_t

enum dStage_t

Enumerator
dstage_getHeader
dstage_storeHeader
dstage_getCBlockSize
dstage_storeCBlockSize
dstage_copyDirect
dstage_getCBlock
dstage_storeCBlock
dstage_decodeCBlock
dstage_decodeCBlock_intoDst
dstage_decodeCBlock_intoTmp
dstage_flushOut
dstage_getSuffix
dstage_storeSuffix
dstage_getSFrameSize
dstage_storeSFrameSize
dstage_skipSkippable

Definition at line 791 of file lz4frame.c.

◆ LZ4F_lastBlockStatus

enum LZ4F_lastBlockStatus

Enumerator
notDone
fromTmpBuffer
fromSrcBuffer

Definition at line 551 of file lz4frame.c.

Function Documentation

◆ LZ4F_compressBegin()

size_t LZ4F_compressBegin	(	LZ4F_compressionContext_t	compressionContext,
		void *	dstBuffer,
		size_t	dstMaxSize,
		const LZ4F_preferences_t *	preferencesPtr
	)

Definition at line 392 of file lz4frame.c.

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◆ LZ4F_compressBlock()

static size_t LZ4F_compressBlock	(	void *	dst,
		const void *	src,
		size_t	srcSize,
		compressFunc_t	compress,
		void *	lz4ctx,
		int	level
	)

static

Definition at line 498 of file lz4frame.c.

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◆ LZ4F_compressBound()

size_t LZ4F_compressBound	(	size_t	srcSize,
		const LZ4F_preferences_t *	preferencesPtr
	)

Definition at line 477 of file lz4frame.c.

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◆ LZ4F_compressEnd()

size_t LZ4F_compressEnd	(	LZ4F_compressionContext_t	compressionContext,
		void *	dstBuffer,
		size_t	dstMaxSize,
		const LZ4F_compressOptions_t *	compressOptionsPtr
	)

Definition at line 714 of file lz4frame.c.

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◆ LZ4F_compressFrame()

size_t LZ4F_compressFrame	(	void *	dstBuffer,
		size_t	dstMaxSize,
		const void *	srcBuffer,
		size_t	srcSize,
		const LZ4F_preferences_t *	preferencesPtr
	)

Definition at line 284 of file lz4frame.c.

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◆ LZ4F_compressFrameBound()

size_t LZ4F_compressFrameBound	(	size_t	srcSize,
		const LZ4F_preferences_t *	preferencesPtr
	)

Definition at line 256 of file lz4frame.c.

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◆ LZ4F_compressUpdate()

size_t LZ4F_compressUpdate	(	LZ4F_compressionContext_t	compressionContext,
		void *	dstBuffer,
		size_t	dstMaxSize,
		const void *	srcBuffer,
		size_t	srcSize,
		const LZ4F_compressOptions_t *	compressOptionsPtr
	)

Definition at line 562 of file lz4frame.c.

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◆ LZ4F_createCompressionContext()

LZ4F_errorCode_t LZ4F_createCompressionContext	(	LZ4F_compressionContext_t *	LZ4F_compressionContextPtr,
		unsigned	version
	)

Definition at line 355 of file lz4frame.c.

◆ LZ4F_createDecompressionContext()

LZ4F_errorCode_t LZ4F_createDecompressionContext	(	LZ4F_decompressionContext_t *	LZ4F_decompressionContextPtr,
		unsigned	versionNumber
	)

Definition at line 760 of file lz4frame.c.

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◆ LZ4F_decodeHeader()

static size_t LZ4F_decodeHeader	(	LZ4F_dctx_t *	dctxPtr,
		const void *	srcVoidPtr,
		size_t	srcSize
	)

static

Definition at line 810 of file lz4frame.c.

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◆ LZ4F_decompress()

size_t LZ4F_decompress	(	LZ4F_decompressionContext_t	decompressionContext,
		void *	dstBuffer,
		size_t *	dstSizePtr,
		const void *	srcBuffer,
		size_t *	srcSizePtr,
		const LZ4F_decompressOptions_t *	decompressOptionsPtr
	)

Definition at line 1044 of file lz4frame.c.

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◆ LZ4F_decompress_safe()

static int LZ4F_decompress_safe	(	const char *	source,
		char *	dest,
		int	compressedSize,
		int	maxDecompressedSize,
		const char *	dictStart,
		int	dictSize
	)

static

Definition at line 954 of file lz4frame.c.

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◆ LZ4F_flush()

size_t LZ4F_flush	(	LZ4F_compressionContext_t	compressionContext,
		void *	dstBuffer,
		size_t	dstMaxSize,
		const LZ4F_compressOptions_t *	compressOptionsPtr
	)

Definition at line 673 of file lz4frame.c.

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◆ LZ4F_freeCompressionContext()

LZ4F_errorCode_t LZ4F_freeCompressionContext ( LZ4F_compressionContext_t LZ4F_compressionContext )

Definition at line 371 of file lz4frame.c.

◆ LZ4F_freeDecompressionContext()

LZ4F_errorCode_t LZ4F_freeDecompressionContext ( LZ4F_decompressionContext_t LZ4F_decompressionContext )

Definition at line 772 of file lz4frame.c.

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◆ LZ4F_getBlockSize()

static size_t LZ4F_getBlockSize ( unsigned blockSizeID )

static

Definition at line 176 of file lz4frame.c.

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◆ LZ4F_getErrorName()

const char* LZ4F_getErrorName ( LZ4F_errorCode_t code )

Definition at line 165 of file lz4frame.c.

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◆ LZ4F_getFrameInfo()

LZ4F_errorCode_t LZ4F_getFrameInfo	(	LZ4F_decompressionContext_t	dCtx,
		LZ4F_frameInfo_t *	frameInfoPtr,
		const void *	srcBuffer,
		size_t *	srcSizePtr
	)

Definition at line 928 of file lz4frame.c.

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◆ LZ4F_headerChecksum()

static BYTE LZ4F_headerChecksum	(	const void *	header,
		size_t	length
	)

static

Definition at line 231 of file lz4frame.c.

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◆ LZ4F_isError()

unsigned LZ4F_isError ( LZ4F_errorCode_t code )

Definition at line 160 of file lz4frame.c.

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◆ LZ4F_localLZ4_compress_limitedOutput_continue()

static int LZ4F_localLZ4_compress_limitedOutput_continue	(	void *	ctx,
		const char *	src,
		char *	dst,
		int	srcSize,
		int	dstSize,
		int	level
	)

static

Definition at line 521 of file lz4frame.c.

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◆ LZ4F_localLZ4_compress_limitedOutput_withState()

static int LZ4F_localLZ4_compress_limitedOutput_withState	(	void *	ctx,
		const char *	src,
		char *	dst,
		int	srcSize,
		int	dstSize,
		int	level
	)

static

Definition at line 515 of file lz4frame.c.

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◆ LZ4F_localLZ4_compressHC_limitedOutput_continue()

static int LZ4F_localLZ4_compressHC_limitedOutput_continue	(	void *	ctx,
		const char *	src,
		char *	dst,
		int	srcSize,
		int	dstSize,
		int	level
	)

static

Definition at line 527 of file lz4frame.c.

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◆ LZ4F_localSaveDict()

static int LZ4F_localSaveDict ( LZ4F_cctx_t * cctxPtr )

static

Definition at line 544 of file lz4frame.c.

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◆ LZ4F_optimalBSID()

static LZ4F_blockSizeID_t LZ4F_optimalBSID	(	const LZ4F_blockSizeID_t	requestedBSID,
		const size_t	srcSize
	)

static

Definition at line 241 of file lz4frame.c.

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◆ LZ4F_readLE32()

static U32 LZ4F_readLE32 ( const BYTE * srcPtr )

static

Definition at line 188 of file lz4frame.c.

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◆ LZ4F_readLE64()

static U64 LZ4F_readLE64 ( const BYTE * srcPtr )

static

Definition at line 205 of file lz4frame.c.

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◆ LZ4F_selectCompression()

static compressFunc_t LZ4F_selectCompression	(	LZ4F_blockMode_t	blockMode,
		int	level
	)

static

Definition at line 533 of file lz4frame.c.

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◆ LZ4F_updateDict()

static void LZ4F_updateDict	(	LZ4F_dctx_t *	dctxPtr,
		const BYTE *	dstPtr,
		size_t	dstSize,
		const BYTE *	dstPtr0,
		unsigned	withinTmp
	)

static

Definition at line 961 of file lz4frame.c.

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◆ LZ4F_writeLE32()

static void LZ4F_writeLE32	(	BYTE *	dstPtr,
		U32	value32
	)

static

Definition at line 197 of file lz4frame.c.

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◆ LZ4F_writeLE64()

static void LZ4F_writeLE64	(	BYTE *	dstPtr,
		U64	value64
	)

static

Definition at line 218 of file lz4frame.c.

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Variable Documentation

◆ BHSize

const size_t BHSize = 4

static

Definition at line 107 of file lz4frame.c.

◆ LZ4F_errorStrings

const char* LZ4F_errorStrings[] = { LZ4F_LIST_ERRORS(LZ4F_GENERATE_STRING) }

static

Definition at line 157 of file lz4frame.c.

◆ maxFHSize

const size_t maxFHSize = 15

static

Definition at line 106 of file lz4frame.c.

◆ minFHSize

const size_t minFHSize = 7

static

Definition at line 105 of file lz4frame.c.

◆ minHClevel

const int minHClevel = 3

static

Definition at line 108 of file lz4frame.c.

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ _1BIT

◆ _2BITS

◆ _3BITS

◆ _4BITS

◆ _8BITS

◆ ALLOCATOR

◆ FREEMEM

◆ GB

◆ KB

◆ LZ4F_BLOCKSIZEID_DEFAULT

◆ LZ4F_BLOCKUNCOMPRESSED_FLAG

◆ LZ4F_GENERATE_STRING

◆ LZ4F_MAGIC_SKIPPABLE_START

◆ LZ4F_MAGICNUMBER

◆ MB

◆ MEM_INIT

Typedef Documentation

◆ BYTE

◆ compressFunc_t

◆ LZ4F_cctx_t

◆ LZ4F_dctx_t

◆ S32

◆ U16

◆ U32

◆ U64

Enumeration Type Documentation

◆ dStage_t

◆ LZ4F_lastBlockStatus

Function Documentation

◆ LZ4F_compressBegin()

◆ LZ4F_compressBlock()

◆ LZ4F_compressBound()

◆ LZ4F_compressEnd()

◆ LZ4F_compressFrame()

◆ LZ4F_compressFrameBound()

◆ LZ4F_compressUpdate()

◆ LZ4F_createCompressionContext()

◆ LZ4F_createDecompressionContext()

◆ LZ4F_decodeHeader()

◆ LZ4F_decompress()

◆ LZ4F_decompress_safe()

◆ LZ4F_flush()

◆ LZ4F_freeCompressionContext()

◆ LZ4F_freeDecompressionContext()

◆ LZ4F_getBlockSize()

◆ LZ4F_getErrorName()

◆ LZ4F_getFrameInfo()

◆ LZ4F_headerChecksum()

◆ LZ4F_isError()

◆ LZ4F_localLZ4_compress_limitedOutput_continue()

◆ LZ4F_localLZ4_compress_limitedOutput_withState()

◆ LZ4F_localLZ4_compressHC_limitedOutput_continue()

◆ LZ4F_localSaveDict()

◆ LZ4F_optimalBSID()

◆ LZ4F_readLE32()

◆ LZ4F_readLE64()

◆ LZ4F_selectCompression()

◆ LZ4F_updateDict()

◆ LZ4F_writeLE32()

◆ LZ4F_writeLE64()

Variable Documentation

◆ BHSize

◆ LZ4F_errorStrings

◆ maxFHSize

◆ minFHSize

◆ minHClevel