#include "../common/mem.h"
#include "../common/zstd_internal.h"

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Classes
struct	ZSTD_seqSymbol_header

struct	ZSTD_seqSymbol

struct	ZSTD_entropyDTables_t

struct	ZSTD_DDictHashSet

struct	ZSTD_DCtx_s

Macros
#define	SEQSYMBOL_TABLE_SIZE(log) (1 + (1 << (log)))

#define	ZSTD_BUILD_FSE_TABLE_WKSP_SIZE (sizeof(S16) * (MaxSeq + 1) + (1u << MaxFSELog) + sizeof(U64))

#define	ZSTD_BUILD_FSE_TABLE_WKSP_SIZE_U32 ((ZSTD_BUILD_FSE_TABLE_WKSP_SIZE + sizeof(U32) - 1) / sizeof(U32))

#define	ZSTD_HUFFDTABLE_CAPACITY_LOG 12

#define	ZSTD_DECODER_INTERNAL_BUFFER (1 << 16)

#define	ZSTD_LBMIN 64

#define	ZSTD_LBMAX (128 << 10)

#define	ZSTD_LITBUFFEREXTRASIZE BOUNDED(ZSTD_LBMIN, ZSTD_DECODER_INTERNAL_BUFFER, ZSTD_LBMAX)

Enumerations
enum	ZSTD_dStage { ZSTDds_getFrameHeaderSize , ZSTDds_decodeFrameHeader , ZSTDds_decodeBlockHeader , ZSTDds_decompressBlock , ZSTDds_decompressLastBlock , ZSTDds_checkChecksum , ZSTDds_decodeSkippableHeader , ZSTDds_skipFrame }

enum	ZSTD_dStreamStage { zdss_init =0 , zdss_loadHeader , zdss_read , zdss_load , zdss_flush }

enum	ZSTD_dictUses_e { ZSTD_use_indefinitely = -1 , ZSTD_dont_use = 0 , ZSTD_use_once = 1 }

enum	ZSTD_litLocation_e { ZSTD_not_in_dst = 0 , ZSTD_in_dst = 1 , ZSTD_split = 2 }

Functions
MEM_STATIC int	ZSTD_DCtx_get_bmi2 (const struct ZSTD_DCtx_s *dctx)

size_t	ZSTD_loadDEntropy (ZSTD_entropyDTables_t entropy, const void const dict, size_t const dictSize)

void	ZSTD_checkContinuity (ZSTD_DCtx dctx, const void dst, size_t dstSize)

Macro Definition Documentation

◆ SEQSYMBOL_TABLE_SIZE

#define SEQSYMBOL_TABLE_SIZE ( log ) (1 + (1 << (log)))

Definition at line 74 of file zstd_decompress_internal.h.

◆ ZSTD_BUILD_FSE_TABLE_WKSP_SIZE

#define ZSTD_BUILD_FSE_TABLE_WKSP_SIZE (sizeof(S16) * (MaxSeq + 1) + (1u << MaxFSELog) + sizeof(U64))

Definition at line 76 of file zstd_decompress_internal.h.

◆ ZSTD_BUILD_FSE_TABLE_WKSP_SIZE_U32

#define ZSTD_BUILD_FSE_TABLE_WKSP_SIZE_U32 ((ZSTD_BUILD_FSE_TABLE_WKSP_SIZE + sizeof(U32) - 1) / sizeof(U32))

Definition at line 77 of file zstd_decompress_internal.h.

◆ ZSTD_DECODER_INTERNAL_BUFFER

#define ZSTD_DECODER_INTERNAL_BUFFER (1 << 16)

Definition at line 111 of file zstd_decompress_internal.h.

◆ ZSTD_HUFFDTABLE_CAPACITY_LOG

#define ZSTD_HUFFDTABLE_CAPACITY_LOG 12

Definition at line 78 of file zstd_decompress_internal.h.

◆ ZSTD_LBMAX

#define ZSTD_LBMAX (128 << 10)

Definition at line 115 of file zstd_decompress_internal.h.

◆ ZSTD_LBMIN

#define ZSTD_LBMIN 64

Definition at line 114 of file zstd_decompress_internal.h.

◆ ZSTD_LITBUFFEREXTRASIZE

#define ZSTD_LITBUFFEREXTRASIZE BOUNDED(ZSTD_LBMIN, ZSTD_DECODER_INTERNAL_BUFFER, ZSTD_LBMAX)

Definition at line 118 of file zstd_decompress_internal.h.

Enumeration Type Documentation

◆ ZSTD_dictUses_e

enum ZSTD_dictUses_e

Enumerator
ZSTD_use_indefinitely
ZSTD_dont_use
ZSTD_use_once

Definition at line 97 of file zstd_decompress_internal.h.

◆ ZSTD_dStage

enum ZSTD_dStage

Enumerator
ZSTDds_getFrameHeaderSize
ZSTDds_decodeFrameHeader
ZSTDds_decodeBlockHeader
ZSTDds_decompressBlock
ZSTDds_decompressLastBlock
ZSTDds_checkChecksum
ZSTDds_decodeSkippableHeader
ZSTDds_skipFrame

Definition at line 89 of file zstd_decompress_internal.h.

◆ ZSTD_dStreamStage

enum ZSTD_dStreamStage

Enumerator
zdss_init
zdss_loadHeader
zdss_read
zdss_load
zdss_flush

Definition at line 94 of file zstd_decompress_internal.h.

◆ ZSTD_litLocation_e

enum ZSTD_litLocation_e

Enumerator
ZSTD_not_in_dst
ZSTD_in_dst
ZSTD_split

Definition at line 120 of file zstd_decompress_internal.h.

Function Documentation

◆ ZSTD_checkContinuity()

void ZSTD_checkContinuity	(	ZSTD_DCtx *	dctx,
		const void *	dst,
		size_t	dstSize
	)

ZSTD_checkContinuity() : check if next dst follows previous position, where decompression ended. If yes, do nothing (continue on current segment). If not, classify previous segment as "external dictionary", and start a new segment. This function cannot fail.

Definition at line 2184 of file zstd_decompress_block.c.

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◆ ZSTD_DCtx_get_bmi2()

MEM_STATIC int ZSTD_DCtx_get_bmi2 ( const struct ZSTD_DCtx_s * dctx )

Definition at line 213 of file zstd_decompress_internal.h.

◆ ZSTD_loadDEntropy()

size_t ZSTD_loadDEntropy	(	ZSTD_entropyDTables_t *	entropy,
		const void *const	dict,
		size_t const	dictSize
	)

ZSTD_loadDEntropy() : dict : must point at beginning of a valid zstd dictionary.

Returns: : size of dictionary header (size of magic number + dict ID + entropy tables)