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removed mem.h dependency from zstd.h (experimental section)

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This commit is contained in:
Yann Collet
2016-07-07 11:53:18 +02:00
parent f246cf5423
commit 52c04fe58f
3 changed files with 22 additions and 24 deletions
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lib/common/zstd.h
+17 -20
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@@ -197,9 +197,6 @@ ZSTDLIB_API size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
* Use them only in association with static linking.
* ==================================================================================== */
/*--- Dependency ---*/
#include "mem.h" /* U32 */
/*--- Constants ---*/
#define ZSTD_MAGICNUMBER 0xFD2FB527 /* v0.7 */
#define ZSTD_MAGIC_SKIPPABLE_START 0x184D2A50U
@@ -229,19 +226,19 @@ static const size_t ZSTD_skippableHeaderSize = 8; /* magic number + skippable f
typedef enum { ZSTD_fast, ZSTD_greedy, ZSTD_lazy, ZSTD_lazy2, ZSTD_btlazy2, ZSTD_btopt } ZSTD_strategy; /*< from faster to stronger */
typedef struct {
U32 windowLog; /*< largest match distance : larger == more compression, more memory needed during decompression */
U32 chainLog; /*< fully searched segment : larger == more compression, slower, more memory (useless for fast) */
U32 hashLog; /*< dispatch table : larger == faster, more memory */
U32 searchLog; /*< nb of searches : larger == more compression, slower */
U32 searchLength; /*< match length searched : larger == faster decompression, sometimes less compression */
U32 targetLength; /*< acceptable match size for optimal parser (only) : larger == more compression, slower */
unsigned windowLog; /*< largest match distance : larger == more compression, more memory needed during decompression */
unsigned chainLog; /*< fully searched segment : larger == more compression, slower, more memory (useless for fast) */
unsigned hashLog; /*< dispatch table : larger == faster, more memory */
unsigned searchLog; /*< nb of searches : larger == more compression, slower */
unsigned searchLength; /*< match length searched : larger == faster decompression, sometimes less compression */
unsigned targetLength; /*< acceptable match size for optimal parser (only) : larger == more compression, slower */
ZSTD_strategy strategy;
} ZSTD_compressionParameters;
typedef struct {
U32 contentSizeFlag; /*< 1: content size will be in frame header (if known). */
U32 checksumFlag; /*< 1: will generate a 22-bits checksum at end of frame, to be used for error detection by decompressor */
U32 noDictIDFlag; /*< 1: no dict ID will be saved into frame header (if dictionary compression) */
unsigned contentSizeFlag; /*< 1: content size will be in frame header (if known). */
unsigned checksumFlag; /*< 1: will generate a 22-bits checksum at end of frame, to be used for error detection by decompressor */
unsigned noDictIDFlag; /*< 1: no dict ID will be saved into frame header (if dictionary compression) */
} ZSTD_frameParameters;
typedef struct {
@@ -272,12 +269,12 @@ ZSTDLIB_API unsigned ZSTD_maxCLevel (void);
/*! ZSTD_getParams() :
* same as ZSTD_getCParams(), but @return a full `ZSTD_parameters` object instead of a `ZSTD_compressionParameters`.
* All fields of `ZSTD_frameParameters` are set to default (0) */
ZSTD_parameters ZSTD_getParams(int compressionLevel, U64 srcSize, size_t dictSize);
ZSTD_parameters ZSTD_getParams(int compressionLevel, unsigned long long srcSize, size_t dictSize);
/*! ZSTD_getCParams() :
* @return ZSTD_compressionParameters structure for a selected compression level and srcSize.
* `srcSize` value is optional, select 0 if not known */
ZSTDLIB_API ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel, U64 srcSize, size_t dictSize);
ZSTDLIB_API ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel, unsigned long long srcSize, size_t dictSize);
/*! ZSTD_checkCParams() :
* Ensure param values remain within authorized range */
@@ -286,7 +283,7 @@ ZSTDLIB_API size_t ZSTD_checkCParams(ZSTD_compressionParameters params);
/*! ZSTD_adjustCParams() :
* optimize params for a given `srcSize` and `dictSize`.
* both values are optional, select `0` if unknown. */
ZSTDLIB_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, U64 srcSize, size_t dictSize);
ZSTDLIB_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, unsigned long long srcSize, size_t dictSize);
/*! ZSTD_compress_advanced() :
* Same as ZSTD_compress_usingDict(), with fine-tune control of each compression parameter */
@@ -309,7 +306,7 @@ ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem);
******************************************************************/
ZSTDLIB_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel);
ZSTDLIB_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel);
ZSTDLIB_API size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_parameters params, U64 pledgedSrcSize);
ZSTDLIB_API size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_parameters params, unsigned long long pledgedSrcSize);
ZSTDLIB_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx);
ZSTDLIB_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
@@ -345,10 +342,10 @@ ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapaci
*/
typedef struct {
U64 frameContentSize;
U32 windowSize;
U32 dictID;
U32 checksumFlag;
unsigned long long frameContentSize;
unsigned windowSize;
unsigned dictID;
unsigned checksumFlag;
} ZSTD_frameParams;
ZSTDLIB_API size_t ZSTD_getFrameParams(ZSTD_frameParams* fparamsPtr, const void* src, size_t srcSize); /**< doesn't consume input */