AuroraMiddleware/zstd
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[dictBuilder] Set default compression level to 3

Browse Source
This commit is contained in:
Nick Terrell 2017-08-24 14:45:06 -07:00
parent e9ce1208a1
commit 376f435914
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/dictBuilder/zdict.c
View File

@ -60,7 +60,7 @@
#define NOISELENGTH 32
static const int g_compressionLevel_default = 6;
static const int g_compressionLevel_default = 3;
static const U32 g_selectivity_default = 9;
@ -703,7 +703,7 @@ static size_t ZDICT_analyzeEntropy(void* dstBuffer, size_t maxDstSize,
memset(repOffset, 0, sizeof(repOffset));
repOffset[1] = repOffset[4] = repOffset[8] = 1;
memset(bestRepOffset, 0, sizeof(bestRepOffset));
if (compressionLevel==0) compressionLevel = g_compressionLevel_default;
if (compressionLevel<=0) compressionLevel = g_compressionLevel_default;
params = ZSTD_getParams(compressionLevel, averageSampleSize, dictBufferSize);
{ size_t const beginResult = ZSTD_compressBegin_advanced(esr.ref, dictBuffer, dictBufferSize, params, 0);
if (ZSTD_isError(beginResult)) {
@ -1056,6 +1056,8 @@ size_t ZDICT_trainFromBuffer(void* dictBuffer, size_t dictBufferCapacity,
memset(&params, 0, sizeof(params));
params.d = 8;
params.steps = 4;
/* Default to level 6 since no compression level information is avaialble */
params.zParams.compressionLevel = 6;
return ZDICT_optimizeTrainFromBuffer_cover(dictBuffer, dictBufferCapacity,
samplesBuffer, samplesSizes,
nbSamples, &params);