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

added ZSTD_estimateDCtxSize()

Browse Source
This commit is contained in:
Yann Collet 2016-07-11 13:46:25 +02:00
parent 8e0ee681b8
commit d158c35e9f
2 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
lib/common/zstd.h
View File

@ -265,7 +265,7 @@ typedef struct { ZSTD_allocFunction customAlloc; ZSTD_freeFunction customFree; v
/*! ZSTD_estimateCCtxSize() :
* Gives the amount of memory allocated for a ZSTD_CCtx given a set of compression parameters.
* `frameContentSize` is an optional parameter, provide `0` if unknown */
size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams, unsigned long long frameContentSize);
ZSTDLIB_API size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams, unsigned long long frameContentSize);
/*! ZSTD_createCCtx_advanced() :
* Create a ZSTD compression context using external alloc and free functions */
@ -278,7 +278,7 @@ ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictS
/*! ZSTD_sizeofCCtx() :
* Gives the amount of memory used by a given ZSTD_CCtx */
size_t ZSTD_sizeofCCtx(const ZSTD_CCtx* cctx);
ZSTDLIB_API size_t ZSTD_sizeofCCtx(const ZSTD_CCtx* cctx);
ZSTDLIB_API unsigned ZSTD_maxCLevel (void);
@ -312,13 +312,17 @@ ZSTDLIB_API size_t ZSTD_compress_advanced (ZSTD_CCtx* ctx,
/*--- Advanced Decompression functions ---*/
/*! ZSTD_estimateDCtxSize() :
* Gives the potential amount of memory allocated to create a ZSTD_DCtx */
ZSTDLIB_API size_t ZSTD_estimateDCtxSize(void);
/*! ZSTD_createDCtx_advanced() :
* Create a ZSTD decompression context using external alloc and free functions */
ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem);
/*! ZSTD_sizeofCCtx() :
* Gives the amount of memory used by a given ZSTD_CCtx */
size_t ZSTD_sizeofDCtx(const ZSTD_DCtx* dctx);
/*! ZSTD_sizeofDCtx() :
* Gives the amount of memory used by a given ZSTD_DCtx */
ZSTDLIB_API size_t ZSTD_sizeofDCtx(const ZSTD_DCtx* dctx);
/* ****************************************************************

2
lib/decompress/zstd_decompress.c
View File

@ -137,6 +137,8 @@ struct ZSTD_DCtx_s
size_t ZSTD_sizeofDCtx (const ZSTD_DCtx* dctx) { return sizeof(*dctx); }
size_t ZSTD_estimateDCtxSize(void) { return sizeof(ZSTD_DCtx); }
size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx)
{
dctx->expected = ZSTD_frameHeaderSize_min;