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-rw-r--r--programs/lz4cli.c2
-rw-r--r--programs/lz4io.c8
-rw-r--r--programs/lz4io.h7
3 files changed, 16 insertions, 1 deletions
diff --git a/programs/lz4cli.c b/programs/lz4cli.c
index 42392eb..ba519b4 100644
--- a/programs/lz4cli.c
+++ b/programs/lz4cli.c
@@ -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; }
diff --git a/programs/lz4io.c b/programs/lz4io.c
index ccf4fa1..b52c1f3 100644
--- a/programs/lz4io.c
+++ b/programs/lz4io.c
@@ -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 */
diff --git a/programs/lz4io.h b/programs/lz4io.h
index b21b8b6..22c5e3e 100644
--- a/programs/lz4io.h
+++ b/programs/lz4io.h
@@ -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 */