krak/zstd
krak/zstd
1
0
Fork 0
mirror of https://github.com/facebook/zstd.git synced 2025-03-06 16:56:49 +02:00
Code Issues Releases 1 Activity

minor comments clarifications

Browse Source
This commit is contained in:
Yann Collet 2016-07-19 15:06:55 +02:00
parent 572b817be3
commit d5c5a77990
5 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
NEWS
View File

@ -1,11 +1,12 @@
v0.7.5
Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers
Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist
Modified : minor compression level adaptations
Update : specification, to v0.1.2 : max huffman depth at 11 bits
changed : zstd.h moved to /lib directory
v0.7.4
Added : homebrew for Mac
Added : homebrew for Mac, by Daniel Cade
Added : more examples
Fixed : segfault when using small dictionaries, reported by Felix Handte
Modified : default compression level for CLI is now 3

2
lib/common/entropy_common.c
View File

@ -63,7 +63,7 @@ const char* HUF_getErrorName(size_t code) { return ERR_getErrorName(code); }
/*-**************************************************************
* FSE NCount encoding-decoding
****************************************************************/
static short FSE_abs(short a) { return a<0 ? -a : a; }
static short FSE_abs(short a) { return (short)(a<0 ? -a : a); }
size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr,
const void* headerBuffer, size_t hbSize)

2
lib/compress/fse_compress.c
View File

@ -190,7 +190,7 @@ size_t FSE_NCountWriteBound(unsigned maxSymbolValue, unsigned tableLog)
return maxSymbolValue ? maxHeaderSize : FSE_NCOUNTBOUND; /* maxSymbolValue==0 ? use default */
}
static short FSE_abs(short a) { return a<0 ? -a : a; }
static short FSE_abs(short a) { return (short)(a<0 ? -a : a); }
static size_t FSE_writeNCount_generic (void* header, size_t headerBufferSize,
const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog,

2
lib/legacy/zstd_v02.c
View File

@ -1350,7 +1350,7 @@ static unsigned FSE_isError(size_t code) { return ERR_isError(code); }
****************************************************************/
static short FSE_abs(short a)
{
return a<0 ? -a : a;
return (short)(a<0 ? -a : a);
}
static size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr,

13
lib/zstd.h
View File

@ -72,7 +72,7 @@ ZSTDLIB_API unsigned ZSTD_versionNumber (void);
/*! ZSTD_compress() :
Compresses `src` buffer into already allocated `dst`.
Hint : compression runs faster if `dstCapacity` >= `ZSTD_compressBound(srcSize)`.
@return : the number of bytes written into `dst`,
@return : the number of bytes written into `dst` (<= `dstCapacity),
or an error code if it fails (which can be tested using ZSTD_isError()) */
ZSTDLIB_API size_t ZSTD_compress( void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
@ -80,7 +80,9 @@ ZSTDLIB_API size_t ZSTD_compress( void* dst, size_t dstCapacity,
/*! ZSTD_getDecompressedSize() :
* @return : decompressed size if known, 0 otherwise.
note : if `0`, follow up with ZSTD_getFrameParams() to know precise failure cause */
note 1 : if `0`, follow up with ZSTD_getFrameParams() to know precise failure cause.
note 2 : decompressed size could be wrong or intentionally modified !
always ensure results fit within application's authorized limits */
unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
/*! ZSTD_decompress() :
@ -106,7 +108,7 @@ ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx(void);
ZSTDLIB_API size_t ZSTD_freeCCtx(ZSTD_CCtx* cctx); /*!< @return : errorCode */
/** ZSTD_compressCCtx() :
Same as ZSTD_compress(), but requires an allocated ZSTD_CCtx (see ZSTD_createCCtx()) */
Same as ZSTD_compress(), requires an allocated ZSTD_CCtx (see ZSTD_createCCtx()) */
ZSTDLIB_API size_t ZSTD_compressCCtx(ZSTD_CCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize, int compressionLevel);
/** Decompression context */
@ -115,7 +117,7 @@ ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx(void);
ZSTDLIB_API size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx); /*!< @return : errorCode */
/** ZSTD_decompressDCtx() :
* Same as ZSTD_decompress(), but requires an allocated ZSTD_DCtx (see ZSTD_createDCtx()) */
* Same as ZSTD_decompress(), requires an allocated ZSTD_DCtx (see ZSTD_createDCtx()) */
ZSTDLIB_API size_t ZSTD_decompressDCtx(ZSTD_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
@ -439,14 +441,13 @@ ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t ds
+ ZSTD_decompressBlock() doesn't accept uncompressed data as input !!!
+ In case of multiple successive blocks, decoder must be informed of uncompressed block existence to follow proper history.
Use ZSTD_insertBlock() in such a case.
Insert block once it's copied into its final position.
*/
#define ZSTD_BLOCKSIZE_ABSOLUTEMAX (128 * 1024) /* define, for static allocation */
ZSTDLIB_API size_t ZSTD_getBlockSizeMax(ZSTD_CCtx* cctx);
ZSTDLIB_API size_t ZSTD_compressBlock (ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_API size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_API size_t ZSTD_insertBlock(ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize); /**< insert block into `dctx` history. Useful to track uncompressed blocks */
ZSTDLIB_API size_t ZSTD_insertBlock(ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize); /**< insert block into `dctx` history. Useful for uncompressed blocks */
#endif /* ZSTD_STATIC_LINKING_ONLY */