AuroraMiddleware/zstd
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Adjust ZSTD_createCDict_byReference() function, and check for cdict when using compressStream2

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This commit is contained in:
senhuang42 2020-09-10 13:42:26 -04:00
parent 5118e30cfe
commit 64bd68e44b
1 changed files with 6 additions and 1 deletions
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7
lib/compress/zstd_compress.c
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@ -3469,9 +3469,12 @@ ZSTD_CDict* ZSTD_createCDict(const void* dict, size_t dictSize, int compressionL
ZSTD_CDict* ZSTD_createCDict_byReference(const void* dict, size_t dictSize, int compressionLevel)
{
ZSTD_compressionParameters cParams = ZSTD_getCParams_internal(compressionLevel, ZSTD_CONTENTSIZE_UNKNOWN, dictSize);
return ZSTD_createCDict_advanced(dict, dictSize,
ZSTD_CDict* cdict = ZSTD_createCDict_advanced(dict, dictSize,
ZSTD_dlm_byRef, ZSTD_dct_auto,
cParams, ZSTD_defaultCMem);
if (cdict)
cdict->compressionLevel = compressionLevel == 0 ? ZSTD_CLEVEL_DEFAULT : compressionLevel;
return cdict;
}
size_t ZSTD_freeCDict(ZSTD_CDict* cdict)
@ -3989,6 +3992,8 @@ size_t ZSTD_compressStream2( ZSTD_CCtx* cctx,
FORWARD_IF_ERROR( ZSTD_initLocalDict(cctx) , ""); /* Init the local dict if present. */
ZSTD_memset(&cctx->prefixDict, 0, sizeof(cctx->prefixDict)); /* single usage */
assert(prefixDict.dict==NULL || cctx->cdict==NULL); /* only one can be set */
if (cctx->cdict)
cctx->requestedParams.compressionLevel = cctx->cdict->compressionLevel; /* let cdict take priority in terms of compression level */
DEBUGLOG(4, "ZSTD_compressStream2 : transparent init stage");
if (endOp == ZSTD_e_end) cctx->pledgedSrcSizePlusOne = input->size + 1; /* auto-fix pledgedSrcSize */
params.cParams = ZSTD_getCParamsFromCCtxParams(