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make it possible to specify LDM parameters in any order

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This commit is contained in:
Yann Collet
2018-03-19 11:07:04 -07:00
parent cbc71e40f6
commit 9618c0c804
4 changed files with 33 additions and 40 deletions
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lib/compress/zstd_compress.c
+4 -8
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@@ -478,17 +478,15 @@ size_t ZSTD_CCtxParam_setParameter(
return ZSTD_ldm_initializeParameters(&CCtxParams->ldmParams, value);
case ZSTD_p_ldmHashLog :
if (value) { /* 0 : does not change current ldmHashLog */
if (value>0) /* 0 ==> auto */
CLAMPCHECK(value, ZSTD_HASHLOG_MIN, ZSTD_HASHLOG_MAX);
CCtxParams->ldmParams.hashLog = value;
}
CCtxParams->ldmParams.hashLog = value;
return CCtxParams->ldmParams.hashLog;
case ZSTD_p_ldmMinMatch :
if (value) { /* 0 : does not change current ldmMinMatch */
if (value>0) /* 0 ==> default */
CLAMPCHECK(value, ZSTD_LDM_MINMATCH_MIN, ZSTD_LDM_MINMATCH_MAX);
CCtxParams->ldmParams.minMatchLength = value;
}
CCtxParams->ldmParams.minMatchLength = value;
return CCtxParams->ldmParams.minMatchLength;
case ZSTD_p_ldmBucketSizeLog :
@@ -988,8 +986,6 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
zbuff, pledgedSrcSize)) {
DEBUGLOG(4, "ZSTD_equivalentParams()==1 -> continue mode (wLog1=%u, blockSize1=%u)",
zc->appliedParams.cParams.windowLog, (U32)zc->blockSize);
assert(!(params.ldmParams.enableLdm &&
params.ldmParams.hashEveryLog == ZSTD_LDM_HASHEVERYLOG_NOTSET));
return ZSTD_continueCCtx(zc, params, pledgedSrcSize);
} }
DEBUGLOG(4, "ZSTD_equivalentParams()==0 -> reset CCtx");