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-rw-r--r--Makefile9
-rw-r--r--NEWS5
-rw-r--r--contrib/cmake_unofficial/.gitignore2
-rw-r--r--lib/Makefile29
-rw-r--r--lib/lz4frame.c29
-rw-r--r--lib/lz4frame.h23
-rw-r--r--lib/lz4hc.c4
-rw-r--r--lib/lz4hc.h8
-rw-r--r--programs/bench.c6
-rw-r--r--programs/lz4cli.c2
-rw-r--r--tests/frametest.c7
11 files changed, 76 insertions, 48 deletions
diff --git a/Makefile b/Makefile
index 48e6752..1432e6b 100644
--- a/Makefile
+++ b/Makefile
@@ -52,7 +52,10 @@ endif
.PHONY: default all lib lz4 clean test versionsTest examples
-default: lib lz4-release
+default:
+ @$(MAKE) -C $(LZ4DIR)
+ @$(MAKE) -C $(PRGDIR)
+ @cp $(PRGDIR)/lz4$(EXT) .
all:
@$(MAKE) -C $(LZ4DIR) $@
@@ -96,10 +99,10 @@ uninstall:
@$(MAKE) -C $(PRGDIR) $@
travis-install:
- $(MAKE) install PREFIX=~/install_test_dir
+ $(MAKE) -j1 install PREFIX=~/install_test_dir
test:
- $(MAKE) -C $(TESTDIR) test
+ $(MAKE) -C $(TESTDIR) $@
clangtest: clean
clang -v
diff --git a/NEWS b/NEWS
index 292cd27..bb77e04 100644
--- a/NEWS
+++ b/NEWS
@@ -1,7 +1,10 @@
v1.7.5
-cli : fix minor notification when using -r recursive mode
+lz4hc : new high compression mode : levels 10-12 compress more and slower, by @inikep.
lz4cat : fix : works with relative path (#284) and stdin (#285) (reported by @beiDei8z)
+cli : fix minor notification when using -r recursive mode
+API : lz4frame : LZ4F_frameBound(0) gives upper bound of *flush() and *End() operations (#290, #280)
doc : markdown version of man page, by Takayuki Matsuoka (#279)
+build : Makefile : fix make lib+exe concurrency (#277)
v1.7.4.2
fix : Makefile : release build compatible with PIE and customized compilation directives provided through environment variables (#274, reported by Antoine Martin)
diff --git a/contrib/cmake_unofficial/.gitignore b/contrib/cmake_unofficial/.gitignore
index 0f81929..d39505d 100644
--- a/contrib/cmake_unofficial/.gitignore
+++ b/contrib/cmake_unofficial/.gitignore
@@ -5,3 +5,5 @@ CMakeFiles
*.cmake
Makefile
liblz4.pc
+lz4c
+install_manifest.txt
diff --git a/lib/Makefile b/lib/Makefile
index 2b47fb0..701dc07 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -71,6 +71,8 @@ else
SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
endif
+LIBLZ4 = liblz4.$(SHARED_EXT_VER)
+
default: lib-release
lib-release: liblz4.a liblz4
@@ -90,20 +92,23 @@ ifeq ($(BUILD_STATIC),yes)
@$(AR) rcs $@ *.o
endif
-liblz4: *.c
+$(LIBLZ4): *.c
@echo compiling dynamic library $(LIBVER)
ifneq (,$(filter Windows%,$(OS)))
@$(CC) $(FLAGS) -DLZ4_DLL_EXPORT=1 -shared $^ -o dll\$@.dll
dlltool -D dll\liblz4.dll -d dll\liblz4.def -l dll\liblz4.lib
else
- @$(CC) $(FLAGS) -shared $^ -fPIC $(SONAME_FLAGS) -o $@.$(SHARED_EXT_VER)
+ @$(CC) $(FLAGS) -shared $^ -fPIC $(SONAME_FLAGS) -o $@
@echo creating versioned links
- @ln -sf $@.$(SHARED_EXT_VER) $@.$(SHARED_EXT_MAJOR)
- @ln -sf $@.$(SHARED_EXT_VER) $@.$(SHARED_EXT)
+ @ln -sf $@ liblz4.$(SHARED_EXT_MAJOR)
+ @ln -sf $@ liblz4.$(SHARED_EXT)
endif
+liblz4: $(LIBLZ4)
+
clean:
- @$(RM) core *.o *.a *.$(SHARED_EXT) liblz4.pc dll/liblz4.dll dll/liblz4.lib
+ @$(RM) core *.o liblz4.pc dll/liblz4.dll dll/liblz4.lib
+ @$(RM) *.a *.$(SHARED_EXT) *.$(SHARED_EXT_MAJOR) *.$(SHARED_EXT_VER)
@echo Cleaning library completed
@@ -123,21 +128,21 @@ liblz4.pc: liblz4.pc.in Makefile
install: lib liblz4.pc
@install -d -m 755 $(DESTDIR)$(LIBDIR)/pkgconfig/ $(DESTDIR)$(INCLUDEDIR)/
@install -m 755 liblz4.$(SHARED_EXT_VER) $(DESTDIR)$(LIBDIR)
- @ln -sf liblz4.$(SHARED_EXT_VER) $(DESTDIR)$(LIBDIR)/liblz4.$(SHARED_EXT_MAJOR)
- @ln -sf liblz4.$(SHARED_EXT_VER) $(DESTDIR)$(LIBDIR)/liblz4.$(SHARED_EXT)
+ @install -m 755 liblz4.$(SHARED_EXT_MAJOR) $(DESTDIR)$(LIBDIR)
+ @install -m 755 liblz4.$(SHARED_EXT) $(DESTDIR)$(LIBDIR)
@install -m 644 liblz4.pc $(DESTDIR)$(LIBDIR)/pkgconfig/
ifeq ($(BUILD_STATIC),yes)
- @install -m 644 liblz4.a $(DESTDIR)$(LIBDIR)/liblz4.a
+ @install -m 644 liblz4.a $(DESTDIR)$(LIBDIR)
endif
- @install -m 644 lz4.h $(DESTDIR)$(INCLUDEDIR)/lz4.h
- @install -m 644 lz4hc.h $(DESTDIR)$(INCLUDEDIR)/lz4hc.h
- @install -m 644 lz4frame.h $(DESTDIR)$(INCLUDEDIR)/lz4frame.h
+ @install -m 644 lz4.h $(DESTDIR)$(INCLUDEDIR)
+ @install -m 644 lz4hc.h $(DESTDIR)$(INCLUDEDIR)
+ @install -m 644 lz4frame.h $(DESTDIR)$(INCLUDEDIR)
@echo lz4 static and shared libraries installed
uninstall:
+ @$(RM) $(DESTDIR)$(LIBDIR)/pkgconfig/liblz4.pc
@$(RM) $(DESTDIR)$(LIBDIR)/liblz4.$(SHARED_EXT)
@$(RM) $(DESTDIR)$(LIBDIR)/liblz4.$(SHARED_EXT_MAJOR)
- @$(RM) $(DESTDIR)$(LIBDIR)/pkgconfig/liblz4.pc
@$(RM) $(DESTDIR)$(LIBDIR)/liblz4.$(SHARED_EXT_VER)
@$(RM) $(DESTDIR)$(LIBDIR)/liblz4.a
@$(RM) $(DESTDIR)$(INCLUDEDIR)/lz4.h
diff --git a/lib/lz4frame.c b/lib/lz4frame.c
index 3c2b788..a0a625b 100644
--- a/lib/lz4frame.c
+++ b/lib/lz4frame.c
@@ -158,7 +158,7 @@ static void LZ4F_writeLE64 (void* dst, U64 value64)
#define LZ4F_BLOCKSIZEID_DEFAULT LZ4F_max64KB
static const size_t minFHSize = 7;
-static const size_t maxFHSize = 15; /* max Frame Header Size */
+static const size_t maxFHSize = LZ4F_HEADER_SIZE_MAX; /* 15 */
static const size_t BHSize = 4;
@@ -254,20 +254,27 @@ static LZ4F_blockSizeID_t LZ4F_optimalBSID(const LZ4F_blockSizeID_t requestedBSI
return requestedBSID;
}
+/* LZ4F_compressBound() :
+ * Provides dstCapacity given a srcSize to guarantee operation success in worst case situations.
+ * prefsPtr is optional : you can provide NULL as argument, preferences will be set to cover worst case scenario.
+ * Result is always the same for a srcSize and prefsPtr, so it can be trusted to size reusable buffers.
+ * When srcSize==0, LZ4F_compressBound() provides an upper bound for LZ4F_flush() and LZ4F_compressEnd() operations.
+ */
static size_t LZ4F_compressBound_internal(size_t srcSize, const LZ4F_preferences_t* preferencesPtr, size_t alreadyBuffered)
{
LZ4F_preferences_t prefsNull;
memset(&prefsNull, 0, sizeof(prefsNull));
prefsNull.frameInfo.contentChecksumFlag = LZ4F_contentChecksumEnabled; /* worst case */
{ const LZ4F_preferences_t* const prefsPtr = (preferencesPtr==NULL) ? &prefsNull : preferencesPtr;
+ U32 const flush = prefsPtr->autoFlush | (srcSize==0);
LZ4F_blockSizeID_t const bid = prefsPtr->frameInfo.blockSizeID;
size_t const blockSize = LZ4F_getBlockSize(bid);
size_t const maxBuffered = blockSize - 1;
size_t const bufferedSize = MIN(alreadyBuffered, maxBuffered);
size_t const maxSrcSize = srcSize + bufferedSize;
unsigned const nbFullBlocks = (unsigned)(maxSrcSize / blockSize);
- size_t const partialBlockSize = srcSize & (blockSize-1);
- size_t const lastBlockSize = prefsPtr->autoFlush ? partialBlockSize : 0;
+ size_t const partialBlockSize = (srcSize - (srcSize==0)) & (blockSize-1); /* 0 => -1 == MAX => blockSize-1 */
+ size_t const lastBlockSize = flush ? partialBlockSize : 0;
unsigned const nbBlocks = nbFullBlocks + (lastBlockSize>0);
size_t const blockHeaderSize = 4; /* default, without block CRC option (which cannot be generated with current API) */
@@ -322,7 +329,7 @@ size_t LZ4F_compressFrame(void* dstBuffer, size_t dstCapacity, const void* srcBu
if (prefs.frameInfo.contentSize != 0)
prefs.frameInfo.contentSize = (U64)srcSize; /* auto-correct content size if selected (!=0) */
- if (prefs.compressionLevel < LZ4HC_MIN_CLEVEL) {
+ if (prefs.compressionLevel < LZ4HC_CLEVEL_MIN) {
cctxI.lz4CtxPtr = &lz4ctx;
cctxI.lz4CtxLevel = 1;
}
@@ -349,7 +356,7 @@ size_t LZ4F_compressFrame(void* dstBuffer, size_t dstCapacity, const void* srcBu
if (LZ4F_isError(tailSize)) return tailSize;
dstPtr += tailSize; }
- if (prefs.compressionLevel >= LZ4HC_MIN_CLEVEL) /* no allocation done with lz4 fast */
+ if (prefs.compressionLevel >= LZ4HC_CLEVEL_MIN) /* no allocation done with lz4 fast */
FREEMEM(cctxI.lz4CtxPtr);
return (dstPtr - dstStart);
@@ -398,7 +405,7 @@ LZ4F_errorCode_t LZ4F_freeCompressionContext(LZ4F_compressionContext_t LZ4F_comp
/*! LZ4F_compressBegin() :
* will write the frame header into dstBuffer.
- * dstBuffer must be large enough to accommodate a header (dstCapacity). Maximum header size is LZ4F_MAXHEADERFRAME_SIZE bytes.
+ * dstBuffer must be large enough to accommodate a header (dstCapacity). Maximum header size is LZ4F_HEADER_SIZE_MAX bytes.
* @return : number of bytes written into dstBuffer for the header
* or an error code (can be tested using LZ4F_isError())
*/
@@ -417,10 +424,10 @@ size_t LZ4F_compressBegin(LZ4F_cctx* cctxPtr, void* dstBuffer, size_t dstCapacit
cctxPtr->prefs = *preferencesPtr;
/* ctx Management */
- { U32 const tableID = (cctxPtr->prefs.compressionLevel < LZ4HC_MIN_CLEVEL) ? 1 : 2; /* 0:nothing ; 1:LZ4 table ; 2:HC tables */
+ { U32 const tableID = (cctxPtr->prefs.compressionLevel < LZ4HC_CLEVEL_MIN) ? 1 : 2; /* 0:nothing ; 1:LZ4 table ; 2:HC tables */
if (cctxPtr->lz4CtxLevel < tableID) {
FREEMEM(cctxPtr->lz4CtxPtr);
- if (cctxPtr->prefs.compressionLevel < LZ4HC_MIN_CLEVEL)
+ if (cctxPtr->prefs.compressionLevel < LZ4HC_CLEVEL_MIN)
cctxPtr->lz4CtxPtr = (void*)LZ4_createStream();
else
cctxPtr->lz4CtxPtr = (void*)LZ4_createStreamHC();
@@ -445,7 +452,7 @@ size_t LZ4F_compressBegin(LZ4F_cctx* cctxPtr, void* dstBuffer, size_t dstCapacit
cctxPtr->tmpIn = cctxPtr->tmpBuff;
cctxPtr->tmpInSize = 0;
XXH32_reset(&(cctxPtr->xxh), 0);
- if (cctxPtr->prefs.compressionLevel < LZ4HC_MIN_CLEVEL)
+ if (cctxPtr->prefs.compressionLevel < LZ4HC_CLEVEL_MIN)
LZ4_resetStream((LZ4_stream_t*)(cctxPtr->lz4CtxPtr));
else
LZ4_resetStreamHC((LZ4_streamHC_t*)(cctxPtr->lz4CtxPtr), cctxPtr->prefs.compressionLevel);
@@ -526,7 +533,7 @@ static int LZ4F_localLZ4_compressHC_limitedOutput_continue(void* ctx, const char
static compressFunc_t LZ4F_selectCompression(LZ4F_blockMode_t blockMode, int level)
{
- if (level < LZ4HC_MIN_CLEVEL) {
+ if (level < LZ4HC_CLEVEL_MIN) {
if (blockMode == LZ4F_blockIndependent) return LZ4F_localLZ4_compress_limitedOutput_withState;
return LZ4F_localLZ4_compress_limitedOutput_continue;
}
@@ -536,7 +543,7 @@ static compressFunc_t LZ4F_selectCompression(LZ4F_blockMode_t blockMode, int lev
static int LZ4F_localSaveDict(LZ4F_cctx_t* cctxPtr)
{
- if (cctxPtr->prefs.compressionLevel < LZ4HC_MIN_CLEVEL)
+ if (cctxPtr->prefs.compressionLevel < LZ4HC_CLEVEL_MIN)
return LZ4_saveDict ((LZ4_stream_t*)(cctxPtr->lz4CtxPtr), (char*)(cctxPtr->tmpBuff), 64 KB);
return LZ4_saveDictHC ((LZ4_streamHC_t*)(cctxPtr->lz4CtxPtr), (char*)(cctxPtr->tmpBuff), 64 KB);
}
diff --git a/lib/lz4frame.h b/lib/lz4frame.h
index 3104d2e..a4a4ce6 100644
--- a/lib/lz4frame.h
+++ b/lib/lz4frame.h
@@ -206,10 +206,11 @@ LZ4FLIB_API LZ4F_errorCode_t LZ4F_freeCompressionContext(LZ4F_cctx* cctx);
/* Compression */
+#define LZ4F_HEADER_SIZE_MAX 15
LZ4FLIB_API size_t LZ4F_compressBegin(LZ4F_cctx* cctx, void* dstBuffer, size_t dstCapacity, const LZ4F_preferences_t* prefsPtr);
/* LZ4F_compressBegin() :
* will write the frame header into dstBuffer.
- * dstBuffer must be large enough to accommodate a header. Maximum header size is 15 bytes.
+ * dstCapacity must be large enough to store the header. Maximum header size is LZ4F_HEADER_SIZE_MAX bytes.
* `prefsPtr` is optional : you can provide NULL as argument, all preferences will then be set to default.
* @return : number of bytes written into dstBuffer for the header
* or an error code (which can be tested using LZ4F_isError())
@@ -217,20 +218,20 @@ LZ4FLIB_API size_t LZ4F_compressBegin(LZ4F_cctx* cctx, void* dstBuffer, size_t d
LZ4FLIB_API size_t LZ4F_compressBound(size_t srcSize, const LZ4F_preferences_t* prefsPtr);
/* LZ4F_compressBound() :
- * Provides the minimum size of Dst buffer given srcSize to handle worst case situations.
- * Different preferences can produce different results.
- * prefsPtr is optional : you can provide NULL as argument, all preferences will then be set to cover worst case.
- * This function includes frame termination cost (4 bytes, or 8 if frame checksum is enabled)
+ * Provides dstCapacity given a srcSize to guarantee operation success in worst case situations.
+ * prefsPtr is optional : you can provide NULL as argument, preferences will be set to cover worst case scenario.
+ * Result is always the same for a srcSize and prefsPtr, so it can be trusted to size reusable buffers.
+ * When srcSize==0, LZ4F_compressBound() provides an upper bound for LZ4F_flush() and LZ4F_compressEnd() operations.
*/
LZ4FLIB_API size_t LZ4F_compressUpdate(LZ4F_cctx* cctx, void* dstBuffer, size_t dstCapacity, const void* srcBuffer, size_t srcSize, const LZ4F_compressOptions_t* cOptPtr);
/* LZ4F_compressUpdate() :
* LZ4F_compressUpdate() can be called repetitively to compress as much data as necessary.
- * An important rule is that dstBuffer MUST be large enough (dstCapacity) to ensure compression completion even in worst case.
- * This value is provided by using LZ4F_compressBound().
+ * An important rule is that dstCapacity MUST be large enough to ensure operation success even in worst case situations.
+ * This value is provided by LZ4F_compressBound().
* If this condition is not respected, LZ4F_compress() will fail (result is an errorCode).
* LZ4F_compressUpdate() doesn't guarantee error recovery. When an error occurs, compression context must be freed or resized.
- * `cOptPtr` is optional : it's possible to provide NULL, all options will be set to default.
+ * `cOptPtr` is optional : NULL can be provided, in which case all options are set to default.
* @return : number of bytes written into `dstBuffer` (it can be zero, meaning input data was just buffered).
* or an error code if it fails (which can be tested using LZ4F_isError())
*/
@@ -245,12 +246,12 @@ LZ4FLIB_API size_t LZ4F_flush(LZ4F_cctx* cctx, void* dstBuffer, size_t dstCapaci
* or an error code if it fails (which can be tested using LZ4F_isError())
*/
-LZ4FLIB_API size_t LZ4F_compressEnd(LZ4F_cctx* cctx, void* dstBuffer, size_t dstMaxSize, const LZ4F_compressOptions_t* cOptPtr);
+LZ4FLIB_API size_t LZ4F_compressEnd(LZ4F_cctx* cctx, void* dstBuffer, size_t dstCapacity, const LZ4F_compressOptions_t* cOptPtr);
/* LZ4F_compressEnd() :
- * To properly finish the compressed frame, invoke LZ4F_compressEnd().
+ * To properly finish an LZ4 frame, invoke LZ4F_compressEnd().
* It will flush whatever data remained within `cctx` (like LZ4_flush())
* and properly finalize the frame, with an endMark and a checksum.
- * `cOptPtr` is optional : it's possible to provide NULL, all options will be set to default.
+ * `cOptPtr` is optional : NULL can be provided, in which case all options will be set to default.
* @return : number of bytes written into dstBuffer (necessarily >= 4 (endMark), or 8 if optional frame checksum is enabled)
* or an error code if it fails (which can be tested using LZ4F_isError())
* A successful call to LZ4F_compressEnd() makes `cctx` available again for another compression task.
diff --git a/lib/lz4hc.c b/lib/lz4hc.c
index 44a1340..ae245b5 100644
--- a/lib/lz4hc.c
+++ b/lib/lz4hc.c
@@ -497,7 +497,7 @@ static int LZ4HC_compress_generic (
limitedOutput_directive limit
)
{
- if (compressionLevel < 1) compressionLevel = LZ4HC_DEFAULT_CLEVEL;
+ if (compressionLevel < 1) compressionLevel = LZ4HC_CLEVEL_DEFAULT;
if (compressionLevel > 9) {
switch (compressionLevel) {
case 10: return LZ4HC_compress_hashChain(ctx, source, dest, inputSize, maxOutputSize, 1 << (16-1), limit);
@@ -574,7 +574,7 @@ int LZ4_loadDictHC (LZ4_streamHC_t* LZ4_streamHCPtr, const char* dictionary, int
static void LZ4HC_setExternalDict(LZ4HC_CCtx_internal* ctxPtr, const BYTE* newBlock)
{
- if (ctxPtr->compressionLevel >= LZ4HC_MIN_CLEVEL_OPT)
+ if (ctxPtr->compressionLevel >= LZ4HC_CLEVEL_OPT_MIN)
LZ4HC_updateBinTree(ctxPtr, ctxPtr->end - MFLIMIT, ctxPtr->end - LASTLITERALS);
else
if (ctxPtr->end >= ctxPtr->base + 4) LZ4HC_Insert (ctxPtr, ctxPtr->end-3); /* Referencing remaining dictionary content */
diff --git a/lib/lz4hc.h b/lib/lz4hc.h
index 7ce5958..ad731d9 100644
--- a/lib/lz4hc.h
+++ b/lib/lz4hc.h
@@ -44,10 +44,10 @@ extern "C" {
/* --- Useful constants --- */
-#define LZ4HC_MIN_CLEVEL 3
-#define LZ4HC_DEFAULT_CLEVEL 9
-#define LZ4HC_MIN_CLEVEL_OPT 11
-#define LZ4HC_MAX_CLEVEL 12
+#define LZ4HC_CLEVEL_MIN 3
+#define LZ4HC_CLEVEL_DEFAULT 9
+#define LZ4HC_CLEVEL_OPT_MIN 11
+#define LZ4HC_CLEVEL_MAX 12
/*-************************************
diff --git a/programs/bench.c b/programs/bench.c
index 01e610c..8311503 100644
--- a/programs/bench.c
+++ b/programs/bench.c
@@ -179,7 +179,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
UTIL_initTimer(&ticksPerSecond);
/* Init */
- if (cLevel < LZ4HC_MIN_CLEVEL) cfunctionId = 0; else cfunctionId = 1;
+ if (cLevel < LZ4HC_CLEVEL_MIN) cfunctionId = 0; else cfunctionId = 1;
switch (cfunctionId)
{
#ifdef COMPRESSOR0
@@ -503,8 +503,8 @@ int BMK_benchFiles(const char** fileNamesTable, unsigned nbFiles,
{
double const compressibility = (double)g_compressibilityDefault / 100;
- if (cLevel > LZ4HC_MAX_CLEVEL) cLevel = LZ4HC_MAX_CLEVEL;
- if (cLevelLast > LZ4HC_MAX_CLEVEL) cLevelLast = LZ4HC_MAX_CLEVEL;
+ if (cLevel > LZ4HC_CLEVEL_MAX) cLevel = LZ4HC_CLEVEL_MAX;
+ if (cLevelLast > LZ4HC_CLEVEL_MAX) cLevelLast = LZ4HC_CLEVEL_MAX;
if (cLevelLast < cLevel) cLevelLast = cLevel;
if (cLevelLast > cLevel) DISPLAYLEVEL(2, "Benchmarking levels from %d to %d\n", cLevel, cLevelLast);
diff --git a/programs/lz4cli.c b/programs/lz4cli.c
index e03aa98..cf91a99 100644
--- a/programs/lz4cli.c
+++ b/programs/lz4cli.c
@@ -188,7 +188,7 @@ static int usage_longhelp(const char* exeName)
DISPLAY( "Compression levels : \n");
DISPLAY( "---------------------\n");
DISPLAY( "-0 ... -2 => Fast compression, all identicals\n");
- DISPLAY( "-3 ... -%d => High compression; higher number == more compression but slower\n", LZ4HC_MAX_CLEVEL);
+ DISPLAY( "-3 ... -%d => High compression; higher number == more compression but slower\n", LZ4HC_CLEVEL_MAX);
DISPLAY( "\n");
DISPLAY( "stdin, stdout and the console : \n");
DISPLAY( "--------------------------------\n");
diff --git a/tests/frametest.c b/tests/frametest.c
index 869be76..e2e0f86 100644
--- a/tests/frametest.c
+++ b/tests/frametest.c
@@ -186,6 +186,13 @@ int basicTests(U32 seed, double compressibility)
FUZ_fillCompressibleNoiseBuffer(CNBuffer, COMPRESSIBLE_NOISE_LENGTH, compressibility, &randState);
crcOrig = XXH64(CNBuffer, COMPRESSIBLE_NOISE_LENGTH, 1);
+ /* LZ4F_compressBound() : special case : srcSize == 0 */
+ DISPLAYLEVEL(3, "LZ4F_compressBound(0) = ");
+ { size_t const cBound = LZ4F_compressBound(0, NULL);
+ if (cBound < 64 KB) goto _output_error;
+ DISPLAYLEVEL(3, " %u \n", (U32)cBound);
+ }
+
/* Special case : null-content frame */
testSize = 0;
DISPLAYLEVEL(3, "LZ4F_compressFrame, compress null content : \n");
generated by cgit v0.12 at 2024-07-09 10:28:41 (GMT)