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fasterDecSpeed can be triggered from cli with --favor-decSpeed

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This commit is contained in:
Yann Collet 2018-04-26 15:49:32 -07:00
parent 3792d00168
commit 5c7d3812d9
5 changed files with 18 additions and 3 deletions
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2
lib/lz4frame.c
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@ -613,7 +613,7 @@ size_t LZ4F_compressBegin_usingCDict(LZ4F_cctx* cctxPtr,
LZ4F_applyCDict(cctxPtr->lz4CtxPtr, cdict, cctxPtr->prefs.compressionLevel);
}
if (preferencesPtr->compressionLevel >= LZ4HC_CLEVEL_MIN) {
LZ4_favorDecompressionSpeed(cctxPtr->lz4CtxPtr, preferencesPtr->favorDecSpeed);
LZ4_favorDecompressionSpeed(cctxPtr->lz4CtxPtr, (int)preferencesPtr->favorDecSpeed);
}
/* Magic Number */

2
lib/lz4hc.c
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@ -718,7 +718,7 @@ LZ4_FORCE_INLINE int LZ4HC_compress_generic_internal (
cParam.nbSearches, cParam.targetLength, limit,
cLevel == LZ4HC_CLEVEL_MAX, /* ultra mode */
dict,
favorDecompressionSpeed);
ctx->favorDecSpeed);
}
}

2
programs/lz4cli.c
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@ -140,6 +140,7 @@ static int usage_advanced(const char* exeName)
DISPLAY( "--no-frame-crc : disable stream checksum (default:enabled) \n");
DISPLAY( "--content-size : compressed frame includes original size (default:not present)\n");
DISPLAY( "--[no-]sparse : sparse mode (default:enabled on file, disabled on stdout)\n");
DISPLAY( "--favor-decSpeed: compressed files decompress faster, but are less compressed \n");
DISPLAY( "Benchmark arguments : \n");
DISPLAY( " -b# : benchmark file(s), using # compression level (default : 1) \n");
DISPLAY( " -e# : test all compression levels from -bX to # (default : 1)\n");
@ -355,6 +356,7 @@ int main(int argc, const char** argv)
if (!strcmp(argument, "--no-content-size")) { LZ4IO_setContentSize(0); continue; }
if (!strcmp(argument, "--sparse")) { LZ4IO_setSparseFile(2); continue; }
if (!strcmp(argument, "--no-sparse")) { LZ4IO_setSparseFile(0); continue; }
if (!strcmp(argument, "--favor-decSpeed")) { LZ4IO_favorDecSpeed(1); continue; }
if (!strcmp(argument, "--verbose")) { displayLevel++; continue; }
if (!strcmp(argument, "--quiet")) { if (displayLevel) displayLevel--; continue; }
if (!strcmp(argument, "--version")) { DISPLAY(WELCOME_MESSAGE); return 0; }

8
programs/lz4io.c
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@ -116,6 +116,7 @@ static int g_blockIndependence = 1;
static int g_sparseFileSupport = 1;
static int g_contentSizeFlag = 0;
static int g_useDictionary = 0;
static unsigned g_favorDecSpeed = 0;
static const char* g_dictionaryFilename = NULL;
@ -221,6 +222,12 @@ int LZ4IO_setContentSize(int enable)
return g_contentSizeFlag;
}
/* Default setting : 0 (disabled) */
void LZ4IO_favorDecSpeed(int favor)
{
g_favorDecSpeed = (favor!=0);
}
static U32 g_removeSrcFile = 0;
void LZ4IO_setRemoveSrcFile(unsigned flag) { g_removeSrcFile = (flag>0); }
@ -548,6 +555,7 @@ static int LZ4IO_compressFilename_extRess(cRess_t ress, const char* srcFileName,
prefs.frameInfo.blockSizeID = (LZ4F_blockSizeID_t)g_blockSizeId;
prefs.frameInfo.blockChecksumFlag = (LZ4F_blockChecksum_t)g_blockChecksum;
prefs.frameInfo.contentChecksumFlag = (LZ4F_contentChecksum_t)g_streamChecksum;
prefs.favorDecSpeed = g_favorDecSpeed;
if (g_contentSizeFlag) {
U64 const fileSize = UTIL_getFileSize(srcFileName);
prefs.frameInfo.contentSize = fileSize; /* == 0 if input == stdin */

7
programs/lz4io.h
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@ -94,10 +94,15 @@ int LZ4IO_setNotificationLevel(int level);
/* Default setting : 0 (disabled) */
int LZ4IO_setSparseFile(int enable);
/* Default setting : 0 (disabled) */
/* Default setting : 0 == no content size present in frame header */
int LZ4IO_setContentSize(int enable);
/* Default setting : 0 == src file preserved */
void LZ4IO_setRemoveSrcFile(unsigned flag);
/* Default setting : 0 == favor compression ratio
* Note : 1 only works for high compression levels (10+) */
void LZ4IO_favorDecSpeed(int favor);
#endif /* LZ4IO_H_237902873 */