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added ZSTD_initCStream_usingCDict_advanced()

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This commit is contained in:
Yann Collet
2017-04-27 11:43:04 -07:00
parent f4bd857d81
commit 77bf59ef50
3 changed files with 15 additions and 5 deletions
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lib/compress/zstd_compress.c
+12 -4
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@@ -3211,17 +3211,25 @@ static size_t ZSTD_initCStream_stage2(ZSTD_CStream* zcs,
return ZSTD_resetCStream_internal(zcs, pledgedSrcSize);
}
/* note : cdict must outlive compression session */
size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict)
/* ZSTD_initCStream_usingCDict_advanced() :
* same as ZSTD_initCStream_usingCDict(), with control over frame parameters */
size_t ZSTD_initCStream_usingCDict_advanced(ZSTD_CStream* zcs, const ZSTD_CDict* cdict, unsigned long long pledgedSrcSize, ZSTD_frameParameters fParams)
{
if (!cdict) return ERROR(GENERIC); /* cannot handle NULL cdict (does not know what to do) */
{ ZSTD_parameters params = ZSTD_getParamsFromCDict(cdict);
params.fParams.contentSizeFlag = 0;
params.fParams = fParams;
zcs->cdict = cdict;
return ZSTD_initCStream_stage2(zcs, params, 0);
return ZSTD_initCStream_stage2(zcs, params, pledgedSrcSize);
}
}
/* note : cdict must outlive compression session */
size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict)
{
ZSTD_frameParameters const fParams = { 0 /* content */, 0 /* checksum */, 0 /* noDictID */ };
return ZSTD_initCStream_usingCDict_advanced(zcs, cdict, 0, fParams);
}
static size_t ZSTD_initCStream_internal(ZSTD_CStream* zcs,
const void* dict, size_t dictSize,
ZSTD_parameters params, unsigned long long pledgedSrcSize)