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Rename and add short ldm parameters in cli

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This commit is contained in:
Stella Lau
2017-09-05 21:11:18 -07:00
parent 98b85426f1
commit c706de5395
5 changed files with 27 additions and 30 deletions
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lib/compress/zstd_compress.c
+5 -8
View File
@@ -342,7 +342,7 @@ size_t ZSTDMT_initializeCCtxParameters(ZSTD_CCtx_params* params, unsigned nbThre
static size_t ZSTD_ldm_initializeParameters(ldmParams_t* params, U32 enableLdm)
{
assert(LDM_BUCKET_SIZE_LOG <= ZSTD_LDM_BUCKETSIZELOG_MAX);
ZSTD_STATIC_ASSERT(LDM_BUCKET_SIZE_LOG <= ZSTD_LDM_BUCKETSIZELOG_MAX);
params->enableLdm = enableLdm>0;
params->hashLog = LDM_HASH_LOG;
params->bucketSizeLog = LDM_BUCKET_SIZE_LOG;
@@ -3568,8 +3568,6 @@ size_t ZSTD_compressBlock_ldm_generic(ZSTD_CCtx* cctx,
}
ip += rLength;
anchor = ip;
continue; /* faster when present ... (?) */
}
}
@@ -3836,12 +3834,11 @@ static size_t ZSTD_compressBlock_internal(ZSTD_CCtx* zc, void* dst, size_t dstCa
const U32 current = (U32)(istart-base);
size_t lastLLSize;
const BYTE* anchor;
U32 const extDict = zc->lowLimit < zc->dictLimit;
const ZSTD_blockCompressor blockCompressor =
zc->appliedParams.ldmParams.enableLdm ?
(zc->lowLimit < zc->dictLimit ? ZSTD_compressBlock_ldm_extDict :
ZSTD_compressBlock_ldm) :
ZSTD_selectBlockCompressor(zc->appliedParams.cParams.strategy,
zc->lowLimit < zc->dictLimit);
zc->appliedParams.ldmParams.enableLdm
? (extDict ? ZSTD_compressBlock_ldm_extDict : ZSTD_compressBlock_ldm)
: ZSTD_selectBlockCompressor(zc->appliedParams.cParams.strategy, extDict);
if (srcSize < MIN_CBLOCK_SIZE+ZSTD_blockHeaderSize+1) return 0; /* don't even attempt compression below a certain srcSize */
ZSTD_resetSeqStore(&(zc->seqStore));
lib/zstd.h
+1 -1
View File
@@ -979,7 +979,7 @@ typedef enum {
/* advanced parameters - may not remain available after API update */
ZSTD_p_forceMaxWindow=1100, /* Force back-reference distances to remain < windowSize,
* even when referencing into Dictionary content (default:0) */
ZSTD_p_enableLongDistanceMatching, /* Enable long distance matching.
ZSTD_p_enableLongDistanceMatching=1200, /* Enable long distance matching.
* This parameter is designed to improve the compression
* ratio for large inputs with long distance matches.
* This increases the memory usage as well as window size.