Added : LZ4 Streaming Format specification (v1.3)

Added : LZ4c command-line utility, supporting the new streaming format
Added : xxhash library
Removed : lz4demo is now replaced by lz4.c
Removed : a few level 4 warnings (issue 64)
Updated : makefiles

git-svn-id: https://lz4.googlecode.com/svn/trunk@92 650e7d94-2a16-8b24-b05c-7c0b3f6821cd

1 files changed, 8 insertions, 6 deletions

diff --git a/lz4hc.c b/lz4hc.c
index 7324492..e3b73d8 100644
--- a/lz4hc.c
+++ b/lz4hc.c
@@ -1,6 +1,6 @@
 /*

    LZ4 HC - High Compression Mode of LZ4

-   Copyright (C) 2011-2012, Yann Collet.

+   Copyright (C) 2011-2013, Yann Collet.

    BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)

 

    Redistribution and use in source and binary forms, with or without

@@ -93,6 +93,8 @@
 #    pragma intrinsic(_BitScanForward)   // For Visual 2005

 #    pragma intrinsic(_BitScanReverse)   // For Visual 2005

 #  endif

+#  pragma warning(disable : 4127)        // disable: C4127: conditional expression is constant

+#  pragma warning(disable : 4701)        // disable: C4701: potentially uninitialized local variable used

 #else 

 #  ifdef __GNUC__

 #    define forceinline inline __attribute__((always_inline))

@@ -346,7 +348,7 @@ forceinline static void LZ4HC_Insert (LZ4HC_Data_Structure* hc4, const BYTE* ip)
         size_t delta = (p) - HASH_POINTER(p); 

         if (delta>MAX_DISTANCE) delta = MAX_DISTANCE; 

         DELTANEXT(p) = (U16)delta; 

-        HashTable[HASH_VALUE(p)] = (p) - base;

+        HashTable[HASH_VALUE(p)] = (HTYPE)((p) - base);

         hc4->nextToUpdate++;

     }

 }

@@ -427,7 +429,7 @@ forceinline static int LZ4HC_InsertAndFindBestMatch (LZ4HC_Data_Structure* hc4,
         do

         {

             DELTANEXT(ptr) = delta;    

-            HashTable[HASH_VALUE(ptr)] = (ptr) - base;     // Head of chain

+            HashTable[HASH_VALUE(ptr)] = (HTYPE)((ptr) - base);     // Head of chain

             ptr++;

         } while(ptr < end);

         hc4->nextToUpdate = end;

@@ -506,7 +508,7 @@ forceinline static int LZ4_encodeSequence(const BYTE** ip, BYTE** op, const BYTE
     length = (int)(*ip - *anchor);

     token = (*op)++;

     if (length>=(int)RUN_MASK) { *token=(RUN_MASK<<ML_BITS); len = length-RUN_MASK; for(; len > 254 ; len-=255) *(*op)++ = 255;  *(*op)++ = (BYTE)len; } 

-    else *token = (length<<ML_BITS);

+    else *token = (BYTE)(length<<ML_BITS);

 

     // Copy Literals

     LZ4_BLINDCOPY(*anchor, *op, length);

@@ -517,7 +519,7 @@ forceinline static int LZ4_encodeSequence(const BYTE** ip, BYTE** op, const BYTE
     // Encode MatchLength

     len = (int)(ml-MINMATCH);

     if (len>=(int)ML_MASK) { *token+=ML_MASK; len-=ML_MASK; for(; len > 509 ; len-=510) { *(*op)++ = 255; *(*op)++ = 255; } if (len > 254) { len-=255; *(*op)++ = 255; } *(*op)++ = (BYTE)len; } 

-    else *token += len;	

+    else *token += (BYTE)len;	

 

     // Prepare next loop

     *ip += ml;

@@ -706,7 +708,7 @@ _Search3:
     {

         int lastRun = (int)(iend - anchor);

         if (lastRun>=(int)RUN_MASK) { *op++=(RUN_MASK<<ML_BITS); lastRun-=RUN_MASK; for(; lastRun > 254 ; lastRun-=255) *op++ = 255; *op++ = (BYTE) lastRun; } 

-        else *op++ = (lastRun<<ML_BITS);

+        else *op++ = (BYTE)(lastRun<<ML_BITS);

         memcpy(op, anchor, iend - anchor);

         op += iend-anchor;

     }