From 559693c75bcc0f0d411eaf8c3faa7e40f3f07562 Mon Sep 17 00:00:00 2001
From: Tino Reichardt <milky-7zip@mcmilk.de>
Date: Tue, 9 Aug 2016 09:44:05 +0200
Subject: [PATCH] zstd release 0.8.0 - made an extra zstd.mak file - removed
 Format7zZStd - SFXSetup also has zstd now - the big 7z.dll is backward
 compatible to: 0.5 .. 0.7 - the small 7za.dll has only support for zstd 0.8

---
 C/zstd/entropy_common.c                   |   65 +-
 C/zstd/fse_compress.c                     |    2 +-
 C/zstd/huf.h                              |    2 +-
 C/zstd/huf_compress.c                     |   77 +-
 C/zstd/mem.h                              |   26 +-
 C/zstd/zbuff.h                            |   17 +-
 C/zstd/zbuff_compress.c                   |   53 +-
 C/zstd/zbuff_decompress.c                 |   49 +-
 C/zstd/zstd.h                             |  185 +-
 C/zstd/zstd_compress.c                    |  797 ++--
 C/zstd/zstd_decompress.c                  |  554 ++-
 C/zstd/zstd_internal.h                    |   70 +-
 C/zstd/zstd_legacy.h                      |   53 +-
 C/zstd/zstd_opt.h                         |   96 +-
 C/zstd/zstd_v05.c                         |  433 +-
 C/zstd/zstd_v05.h                         |   37 +-
 C/zstd/zstd_v06.c                         |    4 +-
 C/zstd/zstd_v06.h                         |    2 +-
 C/zstd/zstd_v07.c                         | 4936 +++++++++++++++++++++
 C/zstd/zstd_v07.h                         |  196 +
 CPP/7zip/7zip.mak                         |    4 +-
 CPP/7zip/Bundles/Format7z/makefile        |   32 +-
 CPP/7zip/Bundles/Format7zF/makefile       |   19 +-
 CPP/7zip/Bundles/Format7zZStd/StdAfx.cpp  |    3 -
 CPP/7zip/Bundles/Format7zZStd/StdAfx.h    |    8 -
 CPP/7zip/Bundles/Format7zZStd/makefile    |  158 -
 CPP/7zip/Bundles/Format7zZStd/resource.rc |    5 -
 CPP/7zip/Bundles/SFXCon/makefile          |   13 +-
 CPP/7zip/Bundles/SFXSetup/makefile        |    1 +
 CPP/7zip/Bundles/SFXWin/makefile          |   13 +-
 CPP/7zip/Compress/ZstdDecoder.cpp         |  824 ++--
 CPP/7zip/Compress/ZstdDecoder.h           |  220 +-
 CPP/7zip/Compress/ZstdEncoder.cpp         |  382 +-
 CPP/7zip/Compress/ZstdEncoder.h           |  152 +-
 CPP/7zip/Compress/ZstdRegister.cpp        |   36 +-
 CPP/7zip/zstd.mak                         |   14 +
 CPP/build-x32.cmd                         |   35 +-
 CPP/build-x64.cmd                         |   38 +-
 38 files changed, 7010 insertions(+), 2601 deletions(-)
 create mode 100644 C/zstd/zstd_v07.c
 create mode 100644 C/zstd/zstd_v07.h
 delete mode 100644 CPP/7zip/Bundles/Format7zZStd/StdAfx.cpp
 delete mode 100644 CPP/7zip/Bundles/Format7zZStd/StdAfx.h
 delete mode 100644 CPP/7zip/Bundles/Format7zZStd/makefile
 delete mode 100644 CPP/7zip/Bundles/Format7zZStd/resource.rc
 create mode 100644 CPP/7zip/zstd.mak

diff --git a/C/zstd/entropy_common.c b/C/zstd/entropy_common.c
index b42acb4a..acd96699 100644
--- a/C/zstd/entropy_common.c
+++ b/C/zstd/entropy_common.c
@@ -38,10 +38,9 @@
 #include "mem.h"
 #include "error_private.h"       /* ERR_*, ERROR */
 #define FSE_STATIC_LINKING_ONLY  /* FSE_MIN_TABLELOG */
-#include "fse.h"   /* FSE_isError, FSE_getErrorName */
+#include "fse.h"
 #define HUF_STATIC_LINKING_ONLY  /* HUF_TABLELOG_ABSOLUTEMAX */
-#include "huf.h"   /* HUF_isError, HUF_getErrorName */
-
+#include "huf.h"
 
 
 /*-****************************************
@@ -63,7 +62,7 @@ const char* HUF_getErrorName(size_t code) { return ERR_getErrorName(code); }
 /*-**************************************************************
 *  FSE NCount encoding-decoding
 ****************************************************************/
-static short FSE_abs(short a) { return a<0 ? -a : a; }
+static short FSE_abs(short a) { return (short)(a<0 ? -a : a); }
 
 size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr,
                  const void* headerBuffer, size_t hbSize)
@@ -90,22 +89,22 @@ size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* t
     threshold = 1<<nbBits;
     nbBits++;
 
-    while ((remaining>1) && (charnum<=*maxSVPtr)) {
+    while ((remaining>1) & (charnum<=*maxSVPtr)) {
         if (previous0) {
             unsigned n0 = charnum;
             while ((bitStream & 0xFFFF) == 0xFFFF) {
-                n0+=24;
+                n0 += 24;
                 if (ip < iend-5) {
-                    ip+=2;
+                    ip += 2;
                     bitStream = MEM_readLE32(ip) >> bitCount;
                 } else {
                     bitStream >>= 16;
-                    bitCount+=16;
+                    bitCount   += 16;
             }   }
             while ((bitStream & 3) == 3) {
-                n0+=3;
-                bitStream>>=2;
-                bitCount+=2;
+                n0 += 3;
+                bitStream >>= 2;
+                bitCount += 2;
             }
             n0 += bitStream & 3;
             bitCount += 2;
@@ -115,10 +114,9 @@ size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* t
                 ip += bitCount>>3;
                 bitCount &= 7;
                 bitStream = MEM_readLE32(ip) >> bitCount;
-            }
-            else
+            } else {
                 bitStream >>= 2;
-        }
+        }   }
         {   short const max = (short)((2*threshold-1)-remaining);
             short count;
 
@@ -148,12 +146,12 @@ size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* t
                 ip = iend - 4;
             }
             bitStream = MEM_readLE32(ip) >> (bitCount & 31);
-    }   }   /* while ((remaining>1) && (charnum<=*maxSVPtr)) */
-    if (remaining != 1) return ERROR(GENERIC);
+    }   }   /* while ((remaining>1) & (charnum<=*maxSVPtr)) */
+    if (remaining != 1) return ERROR(corruption_detected);
+    if (bitCount > 32) return ERROR(corruption_detected);
     *maxSVPtr = charnum-1;
 
     ip += (bitCount+7)>>3;
-    if ((size_t)(ip-istart) > hbSize) return ERROR(srcSize_wrong);
     return ip-istart;
 }
 
@@ -162,7 +160,7 @@ size_t FSE_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* t
     Read compact Huffman tree, saved by HUF_writeCTable().
     `huffWeight` is destination buffer.
     @return : size read from `src` , or an error Code .
-    Note : Needed by HUF_readCTable() and HUF_readDTableXn() .
+    Note : Needed by HUF_readCTable() and HUF_readDTableX?() .
 */
 size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
                      U32* nbSymbolsPtr, U32* tableLogPtr,
@@ -173,26 +171,19 @@ size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
     size_t iSize = ip[0];
     size_t oSize;
 
-    //memset(huffWeight, 0, hwSize);   /* is not necessary, even though some analyzer complain ... */
+    /* memset(huffWeight, 0, hwSize);   *//* is not necessary, even though some analyzer complain ... */
 
-    if (iSize >= 128)  { /* special header */
-        if (iSize >= (242)) {  /* RLE */
-            static U32 l[14] = { 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 127, 128 };
-            oSize = l[iSize-242];
-            memset(huffWeight, 1, hwSize);
-            iSize = 0;
-        }
-        else {   /* Incompressible */
-            oSize = iSize - 127;
-            iSize = ((oSize+1)/2);
-            if (iSize+1 > srcSize) return ERROR(srcSize_wrong);
-            if (oSize >= hwSize) return ERROR(corruption_detected);
-            ip += 1;
-            {   U32 n;
-                for (n=0; n<oSize; n+=2) {
-                    huffWeight[n]   = ip[n/2] >> 4;
-                    huffWeight[n+1] = ip[n/2] & 15;
-    }   }   }   }
+    if (iSize >= 128) {  /* special header */
+        oSize = iSize - 127;
+        iSize = ((oSize+1)/2);
+        if (iSize+1 > srcSize) return ERROR(srcSize_wrong);
+        if (oSize >= hwSize) return ERROR(corruption_detected);
+        ip += 1;
+        {   U32 n;
+            for (n=0; n<oSize; n+=2) {
+                huffWeight[n]   = ip[n/2] >> 4;
+                huffWeight[n+1] = ip[n/2] & 15;
+    }   }   }
     else  {   /* header compressed with FSE (normal case) */
         if (iSize+1 > srcSize) return ERROR(srcSize_wrong);
         oSize = FSE_decompress(huffWeight, hwSize-1, ip+1, iSize);   /* max (hwSize-1) values decoded, as last one is implied */
diff --git a/C/zstd/fse_compress.c b/C/zstd/fse_compress.c
index 192d5502..386b2c01 100644
--- a/C/zstd/fse_compress.c
+++ b/C/zstd/fse_compress.c
@@ -190,7 +190,7 @@ size_t FSE_NCountWriteBound(unsigned maxSymbolValue, unsigned tableLog)
     return maxSymbolValue ? maxHeaderSize : FSE_NCOUNTBOUND;  /* maxSymbolValue==0 ? use default */
 }
 
-static short FSE_abs(short a) { return a<0 ? -a : a; }
+static short FSE_abs(short a) { return (short)(a<0 ? -a : a); }
 
 static size_t FSE_writeNCount_generic (void* header, size_t headerBufferSize,
                                        const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog,
diff --git a/C/zstd/huf.h b/C/zstd/huf.h
index 3b837f10..29bab4b7 100644
--- a/C/zstd/huf.h
+++ b/C/zstd/huf.h
@@ -100,7 +100,7 @@ size_t HUF_compress2 (void* dst, size_t dstSize, const void* src, size_t srcSize
 /* *** Constants *** */
 #define HUF_TABLELOG_ABSOLUTEMAX  16   /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */
 #define HUF_TABLELOG_MAX  12           /* max configured tableLog (for static allocation); can be modified up to HUF_ABSOLUTEMAX_TABLELOG */
-#define HUF_TABLELOG_DEFAULT  HUF_TABLELOG_MAX   /* tableLog by default, when not specified */
+#define HUF_TABLELOG_DEFAULT  11       /* tableLog by default, when not specified */
 #define HUF_SYMBOLVALUE_MAX 255
 #if (HUF_TABLELOG_MAX > HUF_TABLELOG_ABSOLUTEMAX)
 #  error "HUF_TABLELOG_MAX is too large !"
diff --git a/C/zstd/huf_compress.c b/C/zstd/huf_compress.c
index 301b5f91..86a53c2e 100644
--- a/C/zstd/huf_compress.c
+++ b/C/zstd/huf_compress.c
@@ -105,68 +105,39 @@ size_t HUF_writeCTable (void* dst, size_t maxDstSize,
                         const HUF_CElt* CTable, U32 maxSymbolValue, U32 huffLog)
 {
     BYTE bitsToWeight[HUF_TABLELOG_MAX + 1];
-    BYTE huffWeight[HUF_SYMBOLVALUE_MAX + 1];
-    U32 n;
+    BYTE huffWeight[HUF_SYMBOLVALUE_MAX];
     BYTE* op = (BYTE*)dst;
-    size_t size;
+    U32 n;
 
      /* check conditions */
-    if (maxSymbolValue > HUF_SYMBOLVALUE_MAX + 1)
-        return ERROR(GENERIC);
+    if (maxSymbolValue > HUF_SYMBOLVALUE_MAX) return ERROR(GENERIC);
 
     /* convert to weight */
     bitsToWeight[0] = 0;
-    for (n=1; n<=huffLog; n++)
+    for (n=1; n<huffLog+1; n++)
         bitsToWeight[n] = (BYTE)(huffLog + 1 - n);
     for (n=0; n<maxSymbolValue; n++)
         huffWeight[n] = bitsToWeight[CTable[n].nbBits];
 
-    size = FSE_compress(op+1, maxDstSize-1, huffWeight, maxSymbolValue);   /* don't need last symbol stat : implied */
-    if (HUF_isError(size)) return size;
-    if (size >= 128) return ERROR(GENERIC);   /* should never happen, since maxSymbolValue <= 255 */
-    if ((size <= 1) || (size >= maxSymbolValue/2)) {
-        if (size==1) {  /* RLE */
-            /* only possible case : series of 1 (because there are at least 2) */
-            /* can only be 2^n or (2^n-1), otherwise not an huffman tree */
-            BYTE code;
-            switch(maxSymbolValue)
-            {
-            case 1: code = 0; break;
-            case 2: code = 1; break;
-            case 3: code = 2; break;
-            case 4: code = 3; break;
-            case 7: code = 4; break;
-            case 8: code = 5; break;
-            case 15: code = 6; break;
-            case 16: code = 7; break;
-            case 31: code = 8; break;
-            case 32: code = 9; break;
-            case 63: code = 10; break;
-            case 64: code = 11; break;
-            case 127: code = 12; break;
-            case 128: code = 13; break;
-            default : return ERROR(corruption_detected);
-            }
-            op[0] = (BYTE)(255-13 + code);
-            return 1;
-        }
-         /* Not compressible */
-        if (maxSymbolValue > (241-128)) return ERROR(GENERIC);   /* not implemented (not possible with current format) */
-        if (((maxSymbolValue+1)/2) + 1 > maxDstSize) return ERROR(dstSize_tooSmall);   /* not enough space within dst buffer */
-        op[0] = (BYTE)(128 /*special case*/ + 0 /* Not Compressible */ + (maxSymbolValue-1));
-        huffWeight[maxSymbolValue] = 0;   /* to be sure it doesn't cause issue in final combination */
-        for (n=0; n<maxSymbolValue; n+=2)
-            op[(n/2)+1] = (BYTE)((huffWeight[n] << 4) + huffWeight[n+1]);
-        return ((maxSymbolValue+1)/2) + 1;
-    }
+    {   size_t const size = FSE_compress(op+1, maxDstSize-1, huffWeight, maxSymbolValue);
+        if (FSE_isError(size)) return size;
+        if ((size>1) & (size < maxSymbolValue/2)) {   /* FSE compressed */
+            op[0] = (BYTE)size;
+            return size+1;
+    }   }
+
+    /* raw values */
+    if (maxSymbolValue > (256-128)) return ERROR(GENERIC);   /* should not happen */
+    if (((maxSymbolValue+1)/2) + 1 > maxDstSize) return ERROR(dstSize_tooSmall);   /* not enough space within dst buffer */
+    op[0] = (BYTE)(128 /*special case*/ + (maxSymbolValue-1));
+    huffWeight[maxSymbolValue] = 0;   /* to be sure it doesn't cause issue in final combination */
+    for (n=0; n<maxSymbolValue; n+=2)
+        op[(n/2)+1] = (BYTE)((huffWeight[n] << 4) + huffWeight[n+1]);
+    return ((maxSymbolValue+1)/2) + 1;
 
-    /* normal header case */
-    op[0] = (BYTE)size;
-    return size+1;
 }
 
 
-
 size_t HUF_readCTable (HUF_CElt* CTable, U32 maxSymbolValue, const void* src, size_t srcSize)
 {
     BYTE huffWeight[HUF_SYMBOLVALUE_MAX + 1];
@@ -174,7 +145,7 @@ size_t HUF_readCTable (HUF_CElt* CTable, U32 maxSymbolValue, const void* src, si
     U32 tableLog = 0;
     size_t readSize;
     U32 nbSymbols = 0;
-    //memset(huffWeight, 0, sizeof(huffWeight));   /* is not necessary, even though some analyzer complain ... */
+    /*memset(huffWeight, 0, sizeof(huffWeight));*/   /* is not necessary, even though some analyzer complain ... */
 
     /* get symbol weights */
     readSize = HUF_readStats(huffWeight, HUF_SYMBOLVALUE_MAX+1, rankVal, &nbSymbols, &tableLog, src, srcSize);
@@ -193,10 +164,10 @@ size_t HUF_readCTable (HUF_CElt* CTable, U32 maxSymbolValue, const void* src, si
     }   }
 
     /* fill nbBits */
-    { U32 n; for (n=0; n<nbSymbols; n++) {
-        const U32 w = huffWeight[n];
-        CTable[n].nbBits = (BYTE)(tableLog + 1 - w);
-    }}
+    {   U32 n; for (n=0; n<nbSymbols; n++) {
+            const U32 w = huffWeight[n];
+            CTable[n].nbBits = (BYTE)(tableLog + 1 - w);
+    }   }
 
     /* fill val */
     {   U16 nbPerRank[HUF_TABLELOG_MAX+1] = {0};
diff --git a/C/zstd/mem.h b/C/zstd/mem.h
index 9156bfda..fc7b103e 100644
--- a/C/zstd/mem.h
+++ b/C/zstd/mem.h
@@ -44,19 +44,17 @@ extern "C" {
 ******************************************/
 #include <stddef.h>     /* size_t, ptrdiff_t */
 #include <string.h>     /* memcpy */
-#if defined(_MSC_VER)   /* Visual Studio */
-#   include <stdlib.h>  /* _byteswap_ulong */
-#endif
 
 
 /*-****************************************
 *  Compiler specifics
 ******************************************/
-#if defined(_MSC_VER)
-#   include <intrin.h>   /* _byteswap_ */
+#if defined(_MSC_VER)   /* Visual Studio */
+#   include <stdlib.h>  /* _byteswap_ulong */
+#   include <intrin.h>  /* _byteswap_* */
 #endif
 #if defined(__GNUC__)
-#  define MEM_STATIC static __attribute__((unused))
+#  define MEM_STATIC static __inline __attribute__((unused))
 #elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
 #  define MEM_STATIC static inline
 #elif defined(_MSC_VER)
@@ -65,6 +63,10 @@ extern "C" {
 #  define MEM_STATIC static  /* this version may generate warnings for unused static functions; disable the relevant warning */
 #endif
 
+/* code only tested on 32 and 64 bits systems */
+#define MEM_STATIC_ASSERT(c)   { enum { XXH_static_assert = 1/(int)(!!(c)) }; }
+MEM_STATIC void MEM_check(void) { MEM_STATIC_ASSERT((sizeof(size_t)==4) || (sizeof(size_t)==8)); }
+
 
 /*-**************************************************************
 *  Basic Types
@@ -256,6 +258,17 @@ MEM_STATIC void MEM_writeLE16(void* memPtr, U16 val)
     }
 }
 
+MEM_STATIC U32 MEM_readLE24(const void* memPtr)
+{
+    return MEM_readLE16(memPtr) + (((const BYTE*)memPtr)[2] << 16);
+}
+
+MEM_STATIC void MEM_writeLE24(void* memPtr, U32 val)
+{
+    MEM_writeLE16(memPtr, (U16)val);
+    ((BYTE*)memPtr)[2] = (BYTE)(val>>16);
+}
+
 MEM_STATIC U32 MEM_readLE32(const void* memPtr)
 {
     if (MEM_isLittleEndian())
@@ -374,4 +387,3 @@ MEM_STATIC U32 MEM_readMINMATCH(const void* memPtr, U32 length)
 #endif
 
 #endif /* MEM_H_MODULE */
-
diff --git a/C/zstd/zbuff.h b/C/zstd/zbuff.h
index 7820db26..269dc227 100644
--- a/C/zstd/zbuff.h
+++ b/C/zstd/zbuff.h
@@ -56,6 +56,12 @@ extern "C" {
 /* *************************************
 *  Streaming functions
 ***************************************/
+/* This is the easier "buffered" streaming API,
+*  using an internal buffer to lift all restrictions on user-provided buffers
+*  which can be any size, any place, for both input and output.
+*  ZBUFF and ZSTD are 100% interoperable,
+*  frames created by one can be decoded by the other one */
+
 typedef struct ZBUFF_CCtx_s ZBUFF_CCtx;
 ZSTDLIB_API ZBUFF_CCtx* ZBUFF_createCCtx(void);
 ZSTDLIB_API size_t      ZBUFF_freeCCtx(ZBUFF_CCtx* cctx);
@@ -133,8 +139,9 @@ ZSTDLIB_API size_t ZBUFF_decompressContinue(ZBUFF_DCtx* dctx,
 *  The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr.
 *  Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again.
 *  The content of `dst` will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters, or change `dst`.
-*  @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to help latency),
-*            or 0 when a frame is completely decoded,
+*  @return : 0 when a frame is completely decoded and fully flushed,
+*            1 when there is still some data left within internal buffer to flush,
+*            >1 when more data is expected, with value being a suggested next input size (it's just a hint, which helps latency),
 *            or an error code, which can be tested using ZBUFF_isError().
 *
 *  Hint : recommended buffer sizes (not compulsory) : ZBUFF_recommendedDInSize() and ZBUFF_recommendedDOutSize()
@@ -168,11 +175,11 @@ ZSTDLIB_API size_t ZBUFF_recommendedDOutSize(void);
  * ==================================================================================== */
 
 /*--- Dependency ---*/
-#define ZSTD_STATIC_LINKING_ONLY   /* ZSTD_parameters */
+#define ZSTD_STATIC_LINKING_ONLY   /* ZSTD_parameters, ZSTD_customMem */
 #include "zstd.h"
 
 
-/*--- External memory ---*/
+/*--- Custom memory allocator ---*/
 /*! ZBUFF_createCCtx_advanced() :
  *  Create a ZBUFF compression context using external alloc and free functions */
 ZSTDLIB_API ZBUFF_CCtx* ZBUFF_createCCtx_advanced(ZSTD_customMem customMem);
@@ -182,7 +189,7 @@ ZSTDLIB_API ZBUFF_CCtx* ZBUFF_createCCtx_advanced(ZSTD_customMem customMem);
 ZSTDLIB_API ZBUFF_DCtx* ZBUFF_createDCtx_advanced(ZSTD_customMem customMem);
 
 
-/*--- Advanced Streaming function ---*/
+/*--- Advanced Streaming Initialization ---*/
 ZSTDLIB_API size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* zbc,
                                                const void* dict, size_t dictSize,
                                                ZSTD_parameters params, unsigned long long pledgedSrcSize);
diff --git a/C/zstd/zbuff_compress.c b/C/zstd/zbuff_compress.c
index 837d22cf..5d929185 100644
--- a/C/zstd/zbuff_compress.c
+++ b/C/zstd/zbuff_compress.c
@@ -46,7 +46,7 @@
 static size_t const ZBUFF_endFrameSize = ZSTD_BLOCKHEADERSIZE;
 
 
-/*_**************************************************
+/*-***********************************************************
 *  Streaming compression
 *
 *  A ZBUFF_CCtx object is required to track streaming operation.
@@ -77,7 +77,7 @@ static size_t const ZBUFF_endFrameSize = ZSTD_BLOCKHEADERSIZE;
 *  Hint : recommended buffer sizes (not compulsory)
 *  input : ZSTD_BLOCKSIZE_MAX (128 KB), internal unit size, it improves latency to use this value.
 *  output : ZSTD_compressBound(ZSTD_BLOCKSIZE_MAX) + ZSTD_blockHeaderSize + ZBUFF_endFrameSize : ensures it's always possible to write/flush/end a full block at best speed.
-* **************************************************/
+* ***********************************************************/
 
 typedef enum { ZBUFFcs_init, ZBUFFcs_load, ZBUFFcs_flush, ZBUFFcs_final } ZBUFF_cStage;
 
@@ -95,6 +95,8 @@ struct ZBUFF_CCtx_s {
     size_t outBuffContentSize;
     size_t outBuffFlushedSize;
     ZBUFF_cStage stage;
+    U32    checksum;
+    U32    frameEnded;
     ZSTD_customMem customMem;
 };   /* typedef'd tp ZBUFF_CCtx within "zstd_buffered.h" */
 
@@ -133,7 +135,7 @@ size_t ZBUFF_freeCCtx(ZBUFF_CCtx* zbc)
 }
 
 
-/* *** Initialization *** */
+/* ======   Initialization   ====== */
 
 size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* zbc,
                                    const void* dict, size_t dictSize,
@@ -147,7 +149,7 @@ size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* zbc,
             zbc->inBuff = (char*)zbc->customMem.customAlloc(zbc->customMem.opaque, neededInBuffSize);
             if (zbc->inBuff == NULL) return ERROR(memory_allocation);
         }
-        zbc->blockSize = MIN(ZSTD_BLOCKSIZE_MAX, neededInBuffSize);
+        zbc->blockSize = MIN(ZSTD_BLOCKSIZE_ABSOLUTEMAX, neededInBuffSize);
     }
     if (zbc->outBuffSize < ZSTD_compressBound(zbc->blockSize)+1) {
         zbc->outBuffSize = ZSTD_compressBound(zbc->blockSize)+1;
@@ -164,6 +166,8 @@ size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* zbc,
     zbc->inBuffTarget = zbc->blockSize;
     zbc->outBuffContentSize = zbc->outBuffFlushedSize = 0;
     zbc->stage = ZBUFFcs_load;
+    zbc->checksum = params.fParams.checksumFlag > 0;
+    zbc->frameEnded = 0;
     return 0;   /* ready to go */
 }
 
@@ -189,14 +193,16 @@ MEM_STATIC size_t ZBUFF_limitCopy(void* dst, size_t dstCapacity, const void* src
 }
 
 
-/* *** Compression *** */
+/* ======   Compression   ====== */
+
+typedef enum { zbf_gather, zbf_flush, zbf_end } ZBUFF_flush_e;
 
 static size_t ZBUFF_compressContinue_generic(ZBUFF_CCtx* zbc,
                               void* dst, size_t* dstCapacityPtr,
                         const void* src, size_t* srcSizePtr,
-                              int flush)
+                              ZBUFF_flush_e const flush)
 {
-    U32 notDone = 1;
+    U32 someMoreWork = 1;
     const char* const istart = (const char*)src;
     const char* const iend = istart + *srcSizePtr;
     const char* ip = istart;
@@ -204,7 +210,7 @@ static size_t ZBUFF_compressContinue_generic(ZBUFF_CCtx* zbc,
     char* const oend = ostart + *dstCapacityPtr;
     char* op = ostart;
 
-    while (notDone) {
+    while (someMoreWork) {
         switch(zbc->stage)
         {
         case ZBUFFcs_init: return ERROR(init_missing);   /* call ZBUFF_compressInit() first ! */
@@ -216,7 +222,7 @@ static size_t ZBUFF_compressContinue_generic(ZBUFF_CCtx* zbc,
                 zbc->inBuffPos += loaded;
                 ip += loaded;
                 if ( (zbc->inBuffPos==zbc->inToCompress) || (!flush && (toLoad != loaded)) ) {
-                    notDone = 0; break;  /* not enough input to get a full block : stop there, wait for more */
+                    someMoreWork = 0; break;  /* not enough input to get a full block : stop there, wait for more */
             }   }
             /* compress current block (note : this stage cannot be stopped in the middle) */
             {   void* cDst;
@@ -227,8 +233,11 @@ static size_t ZBUFF_compressContinue_generic(ZBUFF_CCtx* zbc,
                     cDst = op;   /* compress directly into output buffer (avoid flush stage) */
                 else
                     cDst = zbc->outBuff, oSize = zbc->outBuffSize;
-                cSize = ZSTD_compressContinue(zbc->zc, cDst, oSize, zbc->inBuff + zbc->inToCompress, iSize);
+                cSize = (flush == zbf_end) ?
+                        ZSTD_compressEnd(zbc->zc, cDst, oSize, zbc->inBuff + zbc->inToCompress, iSize) :
+                        ZSTD_compressContinue(zbc->zc, cDst, oSize, zbc->inBuff + zbc->inToCompress, iSize);
                 if (ZSTD_isError(cSize)) return cSize;
+                if (flush == zbf_end) zbc->frameEnded = 1;
                 /* prepare next block */
                 zbc->inBuffTarget = zbc->inBuffPos + zbc->blockSize;
                 if (zbc->inBuffTarget > zbc->inBuffSize)
@@ -245,14 +254,14 @@ static size_t ZBUFF_compressContinue_generic(ZBUFF_CCtx* zbc,
                 size_t const flushed = ZBUFF_limitCopy(op, oend-op, zbc->outBuff + zbc->outBuffFlushedSize, toFlush);
                 op += flushed;
                 zbc->outBuffFlushedSize += flushed;
-                if (toFlush!=flushed) { notDone = 0; break; } /* dst too small to store flushed data : stop there */
+                if (toFlush!=flushed) { someMoreWork = 0; break; } /* dst too small to store flushed data : stop there */
                 zbc->outBuffContentSize = zbc->outBuffFlushedSize = 0;
                 zbc->stage = ZBUFFcs_load;
                 break;
             }
 
         case ZBUFFcs_final:
-            notDone = 0;   /* do nothing */
+            someMoreWork = 0;   /* do nothing */
             break;
 
         default:
@@ -262,6 +271,7 @@ static size_t ZBUFF_compressContinue_generic(ZBUFF_CCtx* zbc,
 
     *srcSizePtr = ip - istart;
     *dstCapacityPtr = op - ostart;
+    if (zbc->frameEnded) return 0;
     {   size_t hintInSize = zbc->inBuffTarget - zbc->inBuffPos;
         if (hintInSize==0) hintInSize = zbc->blockSize;
         return hintInSize;
@@ -272,17 +282,17 @@ size_t ZBUFF_compressContinue(ZBUFF_CCtx* zbc,
                               void* dst, size_t* dstCapacityPtr,
                         const void* src, size_t* srcSizePtr)
 {
-    return ZBUFF_compressContinue_generic(zbc, dst, dstCapacityPtr, src, srcSizePtr, 0);
+    return ZBUFF_compressContinue_generic(zbc, dst, dstCapacityPtr, src, srcSizePtr, zbf_gather);
 }
 
 
 
-/* *** Finalize *** */
+/* ======   Finalize   ====== */
 
 size_t ZBUFF_compressFlush(ZBUFF_CCtx* zbc, void* dst, size_t* dstCapacityPtr)
 {
     size_t srcSize = 0;
-    ZBUFF_compressContinue_generic(zbc, dst, dstCapacityPtr, &srcSize, &srcSize, 1);  /* use a valid src address instead of NULL */
+    ZBUFF_compressContinue_generic(zbc, dst, dstCapacityPtr, &srcSize, &srcSize, zbf_flush);  /* use a valid src address instead of NULL */
     return zbc->outBuffContentSize - zbc->outBuffFlushedSize;
 }
 
@@ -296,15 +306,18 @@ size_t ZBUFF_compressEnd(ZBUFF_CCtx* zbc, void* dst, size_t* dstCapacityPtr)
     if (zbc->stage != ZBUFFcs_final) {
         /* flush whatever remains */
         size_t outSize = *dstCapacityPtr;
-        size_t const remainingToFlush = ZBUFF_compressFlush(zbc, dst, &outSize);
+        size_t srcSize = 0;
+        size_t const notEnded = ZBUFF_compressContinue_generic(zbc, dst, &outSize, &srcSize, &srcSize, zbf_end);  /* use a valid address instead of NULL */
+        size_t const remainingToFlush = zbc->outBuffContentSize - zbc->outBuffFlushedSize;
         op += outSize;
         if (remainingToFlush) {
             *dstCapacityPtr = op-ostart;
-            return remainingToFlush + ZBUFF_endFrameSize;
+            return remainingToFlush + ZBUFF_endFrameSize + (zbc->checksum * 4);
         }
         /* create epilogue */
         zbc->stage = ZBUFFcs_final;
-        zbc->outBuffContentSize = ZSTD_compressEnd(zbc->zc, zbc->outBuff, zbc->outBuffSize); /* epilogue into outBuff */
+        zbc->outBuffContentSize = !notEnded ? 0 :
+            ZSTD_compressEnd(zbc->zc, zbc->outBuff, zbc->outBuffSize, NULL, 0);  /* write epilogue into outBuff */
     }
 
     /* flush epilogue */
@@ -323,5 +336,5 @@ size_t ZBUFF_compressEnd(ZBUFF_CCtx* zbc, void* dst, size_t* dstCapacityPtr)
 /* *************************************
 *  Tool functions
 ***************************************/
-size_t ZBUFF_recommendedCInSize(void)  { return ZSTD_BLOCKSIZE_MAX; }
-size_t ZBUFF_recommendedCOutSize(void) { return ZSTD_compressBound(ZSTD_BLOCKSIZE_MAX) + ZSTD_blockHeaderSize + ZBUFF_endFrameSize; }
+size_t ZBUFF_recommendedCInSize(void)  { return ZSTD_BLOCKSIZE_ABSOLUTEMAX; }
+size_t ZBUFF_recommendedCOutSize(void) { return ZSTD_compressBound(ZSTD_BLOCKSIZE_ABSOLUTEMAX) + ZSTD_blockHeaderSize + ZBUFF_endFrameSize; }
diff --git a/C/zstd/zbuff_decompress.c b/C/zstd/zbuff_decompress.c
index e74fb5d1..908120fc 100644
--- a/C/zstd/zbuff_decompress.c
+++ b/C/zstd/zbuff_decompress.c
@@ -158,9 +158,9 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
     char* const ostart = (char*)dst;
     char* const oend = ostart + *dstCapacityPtr;
     char* op = ostart;
-    U32 notDone = 1;
+    U32 someMoreWork = 1;
 
-    while (notDone) {
+    while (someMoreWork) {
         switch(zbd->stage)
         {
         case ZBUFFds_init :
@@ -168,9 +168,9 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
 
         case ZBUFFds_loadHeader :
             {   size_t const hSize = ZSTD_getFrameParams(&(zbd->fParams), zbd->headerBuffer, zbd->lhSize);
-                if (hSize != 0) {
+                if (ZSTD_isError(hSize)) return hSize;
+                if (hSize != 0) {   /* need more input */
                     size_t const toLoad = hSize - zbd->lhSize;   /* if hSize!=0, hSize > zbd->lhSize */
-                    if (ZSTD_isError(hSize)) return hSize;
                     if (toLoad > (size_t)(iend-ip)) {   /* not enough input to load full header */
                         memcpy(zbd->headerBuffer + zbd->lhSize, ip, iend-ip);
                         zbd->lhSize += iend-ip;
@@ -184,7 +184,7 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
             /* Consume header */
             {   size_t const h1Size = ZSTD_nextSrcSizeToDecompress(zbd->zd);  /* == ZSTD_frameHeaderSize_min */
                 size_t const h1Result = ZSTD_decompressContinue(zbd->zd, NULL, 0, zbd->headerBuffer, h1Size);
-                if (ZSTD_isError(h1Result)) return h1Result;
+                if (ZSTD_isError(h1Result)) return h1Result;   /* should not happen : already checked */
                 if (h1Size < zbd->lhSize) {   /* long header */
                     size_t const h2Size = ZSTD_nextSrcSizeToDecompress(zbd->zd);
                     size_t const h2Result = ZSTD_decompressContinue(zbd->zd, NULL, 0, zbd->headerBuffer+h1Size, h2Size);
@@ -194,7 +194,8 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
             zbd->fParams.windowSize = MAX(zbd->fParams.windowSize, 1U << ZSTD_WINDOWLOG_ABSOLUTEMIN);
 
             /* Frame header instruct buffer sizes */
-            {   size_t const blockSize = MIN(zbd->fParams.windowSize, ZSTD_BLOCKSIZE_MAX);
+            {   size_t const blockSize = MIN(zbd->fParams.windowSize, ZSTD_BLOCKSIZE_ABSOLUTEMAX);
+                size_t const neededOutSize = zbd->fParams.windowSize + blockSize;
                 zbd->blockSize = blockSize;
                 if (zbd->inBuffSize < blockSize) {
                     zbd->customMem.customFree(zbd->customMem.opaque, zbd->inBuff);
@@ -202,20 +203,20 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
                     zbd->inBuff = (char*)zbd->customMem.customAlloc(zbd->customMem.opaque, blockSize);
                     if (zbd->inBuff == NULL) return ERROR(memory_allocation);
                 }
-                {   size_t const neededOutSize = zbd->fParams.windowSize + blockSize;
-                    if (zbd->outBuffSize < neededOutSize) {
-                        zbd->customMem.customFree(zbd->customMem.opaque, zbd->outBuff);
-                        zbd->outBuffSize = neededOutSize;
-                        zbd->outBuff = (char*)zbd->customMem.customAlloc(zbd->customMem.opaque, neededOutSize);
-                        if (zbd->outBuff == NULL) return ERROR(memory_allocation);
-            }   }   }
+                if (zbd->outBuffSize < neededOutSize) {
+                    zbd->customMem.customFree(zbd->customMem.opaque, zbd->outBuff);
+                    zbd->outBuffSize = neededOutSize;
+                    zbd->outBuff = (char*)zbd->customMem.customAlloc(zbd->customMem.opaque, neededOutSize);
+                    if (zbd->outBuff == NULL) return ERROR(memory_allocation);
+            }   }
             zbd->stage = ZBUFFds_read;
+            /* pass-through */
 
         case ZBUFFds_read:
             {   size_t const neededInSize = ZSTD_nextSrcSizeToDecompress(zbd->zd);
                 if (neededInSize==0) {  /* end of frame */
                     zbd->stage = ZBUFFds_init;
-                    notDone = 0;
+                    someMoreWork = 0;
                     break;
                 }
                 if ((size_t)(iend-ip) >= neededInSize) {  /* decode directly from src */
@@ -230,8 +231,9 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
                     zbd->stage = ZBUFFds_flush;
                     break;
                 }
-                if (ip==iend) { notDone = 0; break; }   /* no more input */
+                if (ip==iend) { someMoreWork = 0; break; }   /* no more input */
                 zbd->stage = ZBUFFds_load;
+                /* pass-through */
             }
 
         case ZBUFFds_load:
@@ -242,7 +244,7 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
                 loadedSize = ZBUFF_limitCopy(zbd->inBuff + zbd->inPos, toLoad, ip, iend-ip);
                 ip += loadedSize;
                 zbd->inPos += loadedSize;
-                if (loadedSize < toLoad) { notDone = 0; break; }   /* not enough input, wait for more */
+                if (loadedSize < toLoad) { someMoreWork = 0; break; }   /* not enough input, wait for more */
 
                 /* decode loaded input */
                 {  const int isSkipFrame = ZSTD_isSkipFrame(zbd->zd);
@@ -254,7 +256,7 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
                     if (!decodedSize && !isSkipFrame) { zbd->stage = ZBUFFds_read; break; }   /* this was just a header */
                     zbd->outEnd = zbd->outStart +  decodedSize;
                     zbd->stage = ZBUFFds_flush;
-                    // break; /* ZBUFFds_flush follows */
+                    /* pass-through */
             }   }
 
         case ZBUFFds_flush:
@@ -262,14 +264,14 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
                 size_t const flushedSize = ZBUFF_limitCopy(op, oend-op, zbd->outBuff + zbd->outStart, toFlushSize);
                 op += flushedSize;
                 zbd->outStart += flushedSize;
-                if (flushedSize == toFlushSize) {
+                if (flushedSize == toFlushSize) {  /* flush completed */
                     zbd->stage = ZBUFFds_read;
                     if (zbd->outStart + zbd->blockSize > zbd->outBuffSize)
                         zbd->outStart = zbd->outEnd = 0;
                     break;
                 }
                 /* cannot flush everything */
-                notDone = 0;
+                someMoreWork = 0;
                 break;
             }
         default: return ERROR(GENERIC);   /* impossible */
@@ -279,16 +281,17 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
     *srcSizePtr = ip-istart;
     *dstCapacityPtr = op-ostart;
     {   size_t nextSrcSizeHint = ZSTD_nextSrcSizeToDecompress(zbd->zd);
-//        if (nextSrcSizeHint > ZSTD_blockHeaderSize) nextSrcSizeHint+= ZSTD_blockHeaderSize;   /* get following block header too */
+        if (!nextSrcSizeHint) return (zbd->outEnd != zbd->outStart);   /* return 0 only if fully flushed too */
+        nextSrcSizeHint += ZSTD_blockHeaderSize * (ZSTD_nextInputType(zbd->zd) == ZSTDnit_block);
+        if (zbd->inPos > nextSrcSizeHint) return ERROR(GENERIC);   /* should never happen */
         nextSrcSizeHint -= zbd->inPos;   /* already loaded*/
         return nextSrcSizeHint;
     }
 }
 
 
-
 /* *************************************
 *  Tool functions
 ***************************************/
-size_t ZBUFF_recommendedDInSize(void)  { return ZSTD_BLOCKSIZE_MAX + ZSTD_blockHeaderSize /* block header size*/ ; }
-size_t ZBUFF_recommendedDOutSize(void) { return ZSTD_BLOCKSIZE_MAX; }
+size_t ZBUFF_recommendedDInSize(void)  { return ZSTD_BLOCKSIZE_ABSOLUTEMAX + ZSTD_blockHeaderSize /* block header size*/ ; }
+size_t ZBUFF_recommendedDOutSize(void) { return ZSTD_BLOCKSIZE_ABSOLUTEMAX; }
diff --git a/C/zstd/zstd.h b/C/zstd/zstd.h
index f30e76cc..cb33b558 100644
--- a/C/zstd/zstd.h
+++ b/C/zstd/zstd.h
@@ -36,15 +36,11 @@
 extern "C" {
 #endif
 
-/*-*************************************
-*  Dependencies
-***************************************/
+/*======  Dependency  ======*/
 #include <stddef.h>   /* size_t */
 
 
-/*-***************************************************************
-*  Export parameters
-*****************************************************************/
+/*======  Export for Windows  ======*/
 /*!
 *  ZSTD_DLL_EXPORT :
 *  Enable exporting of functions when building a Windows DLL
@@ -56,12 +52,10 @@ extern "C" {
 #endif
 
 
-/* *************************************
-*  Version
-***************************************/
+/*======  Version  ======*/
 #define ZSTD_VERSION_MAJOR    0
-#define ZSTD_VERSION_MINOR    7
-#define ZSTD_VERSION_RELEASE  4
+#define ZSTD_VERSION_MINOR    8
+#define ZSTD_VERSION_RELEASE  0
 
 #define ZSTD_LIB_VERSION ZSTD_VERSION_MAJOR.ZSTD_VERSION_MINOR.ZSTD_VERSION_RELEASE
 #define ZSTD_QUOTE(str) #str
@@ -73,61 +67,72 @@ ZSTDLIB_API unsigned ZSTD_versionNumber (void);
 
 
 /* *************************************
-*  Simple functions
+*  Simple API
 ***************************************/
 /*! ZSTD_compress() :
-    Compresses `srcSize` bytes from buffer `src` into buffer `dst` of size `dstCapacity`.
-    Destination buffer must be already allocated.
-    Compression runs faster if `dstCapacity` >=  `ZSTD_compressBound(srcSize)`.
-    @return : the number of bytes written into `dst`,
+    Compresses `src` buffer into already allocated `dst`.
+    Hint : compression runs faster if `dstCapacity` >=  `ZSTD_compressBound(srcSize)`.
+    @return : the number of bytes written into `dst` (<= `dstCapacity),
               or an error code if it fails (which can be tested using ZSTD_isError()) */
-ZSTDLIB_API size_t ZSTD_compress(   void* dst, size_t dstCapacity,
-                              const void* src, size_t srcSize,
-                                     int  compressionLevel);
+ZSTDLIB_API size_t ZSTD_compress( void* dst, size_t dstCapacity,
+                            const void* src, size_t srcSize,
+                                  int compressionLevel);
 
-/** ZSTD_getDecompressedSize() :
-*   @return : decompressed size if known, 0 otherwise.
-        note : to know precise reason why result is `0`, follow up with ZSTD_getFrameParams() */
+/*! ZSTD_getDecompressedSize() :
+*   @return : decompressed size as a 64-bits value _if known_, 0 otherwise.
+*    note 1 : decompressed size can be very large (64-bits value),
+*             potentially larger than what local system can handle as a single memory segment.
+*             In which case, it's necessary to use streaming mode to decompress data.
+*    note 2 : decompressed size is an optional field, that may not be present.
+*             When `return==0`, consider data to decompress could have any size.
+*             In which case, it's necessary to use streaming mode to decompress data,
+*             or rely on application's implied limits.
+*             (For example, it may know that its own data is necessarily cut into blocks <= 16 KB).
+*    note 3 : decompressed size could be wrong or intentionally modified !
+*             Always ensure result fits within application's authorized limits !
+*             Each application can have its own set of conditions.
+*             If the intention is to decompress public data compressed by zstd command line utility,
+*             it is recommended to support at least 8 MB for extended compatibility.
+*    note 4 : when `return==0`, if precise failure cause is needed, use ZSTD_getFrameParams() to know more. */
 unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
 
 /*! ZSTD_decompress() :
-    `compressedSize` : is the _exact_ size of compressed input, otherwise decompression will fail.
-    `dstCapacity` must be equal or larger than originalSize.
+    `compressedSize` : must be the _exact_ size of compressed input, otherwise decompression will fail.
+    `dstCapacity` must be equal or larger than originalSize (see ZSTD_getDecompressedSize() ).
+    If originalSize is unknown, and if there is no implied application-specific limitations,
+    it's necessary to use streaming mode to decompress data.
     @return : the number of bytes decompressed into `dst` (<= `dstCapacity`),
               or an errorCode if it fails (which can be tested using ZSTD_isError()) */
 ZSTDLIB_API size_t ZSTD_decompress( void* dst, size_t dstCapacity,
                               const void* src, size_t compressedSize);
 
 
-/* *************************************
-*  Helper functions
-***************************************/
-ZSTDLIB_API size_t      ZSTD_compressBound(size_t srcSize); /*!< maximum compressed size (worst case scenario) */
-
-/* Error Management */
+/*======  Helper functions  ======*/
+ZSTDLIB_API int         ZSTD_maxCLevel(void);               /*!< maximum compression level available */
+ZSTDLIB_API size_t      ZSTD_compressBound(size_t srcSize); /*!< maximum compressed size in worst case scenario */
 ZSTDLIB_API unsigned    ZSTD_isError(size_t code);          /*!< tells if a `size_t` function result is an error code */
-ZSTDLIB_API const char* ZSTD_getErrorName(size_t code);     /*!< provides readable string for an error code */
+ZSTDLIB_API const char* ZSTD_getErrorName(size_t code);     /*!< provides readable string from an error code */
 
 
-/* *************************************
+/*-*************************************
 *  Explicit memory management
 ***************************************/
 /** Compression context */
 typedef struct ZSTD_CCtx_s ZSTD_CCtx;                       /*< incomplete type */
 ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx(void);
-ZSTDLIB_API size_t     ZSTD_freeCCtx(ZSTD_CCtx* cctx);      /*!< @return : errorCode */
+ZSTDLIB_API size_t     ZSTD_freeCCtx(ZSTD_CCtx* cctx);
 
 /** ZSTD_compressCCtx() :
-    Same as ZSTD_compress(), but requires an already allocated ZSTD_CCtx (see ZSTD_createCCtx()) */
+    Same as ZSTD_compress(), requires an allocated ZSTD_CCtx (see ZSTD_createCCtx()) */
 ZSTDLIB_API size_t ZSTD_compressCCtx(ZSTD_CCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize, int compressionLevel);
 
 /** Decompression context */
-typedef struct ZSTD_DCtx_s ZSTD_DCtx;
+typedef struct ZSTD_DCtx_s ZSTD_DCtx;                       /*< incomplete type */
 ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx(void);
-ZSTDLIB_API size_t     ZSTD_freeDCtx(ZSTD_DCtx* dctx);      /*!< @return : errorCode */
+ZSTDLIB_API size_t     ZSTD_freeDCtx(ZSTD_DCtx* dctx);
 
 /** ZSTD_decompressDCtx() :
-*   Same as ZSTD_decompress(), but requires an already allocated ZSTD_DCtx (see ZSTD_createDCtx()) */
+*   Same as ZSTD_decompress(), requires an allocated ZSTD_DCtx (see ZSTD_createDCtx()) */
 ZSTDLIB_API size_t ZSTD_decompressDCtx(ZSTD_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
 
 
@@ -135,10 +140,8 @@ ZSTDLIB_API size_t ZSTD_decompressDCtx(ZSTD_DCtx* ctx, void* dst, size_t dstCapa
 *  Simple dictionary API
 ***************************/
 /*! ZSTD_compress_usingDict() :
-*   Compression using a pre-defined Dictionary content (see dictBuilder).
-*   Note 1 : This function load the dictionary, resulting in a significant startup time.
-*   Note 2 : `dict` must remain accessible and unmodified during compression operation.
-*   Note 3 : `dict` can be `NULL`, in which case, it's equivalent to ZSTD_compressCCtx() */
+*   Compression using a predefined Dictionary (see dictBuilder/zdict.h).
+*   Note : This function load the dictionary, resulting in a significant startup time. */
 ZSTDLIB_API size_t ZSTD_compress_usingDict(ZSTD_CCtx* ctx,
                                            void* dst, size_t dstCapacity,
                                      const void* src, size_t srcSize,
@@ -146,11 +149,9 @@ ZSTDLIB_API size_t ZSTD_compress_usingDict(ZSTD_CCtx* ctx,
                                            int compressionLevel);
 
 /*! ZSTD_decompress_usingDict() :
-*   Decompression using a pre-defined Dictionary content (see dictBuilder).
+*   Decompression using a predefined Dictionary (see dictBuilder/zdict.h).
 *   Dictionary must be identical to the one used during compression.
-*   Note 1 : This function load the dictionary, resulting in a significant startup time
-*   Note 2 : `dict` must remain accessible and unmodified during compression operation.
-*   Note 3 : `dict` can be `NULL`, in which case, it's equivalent to ZSTD_decompressDCtx() */
+*   Note : This function load the dictionary, resulting in a significant startup time */
 ZSTDLIB_API size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx,
                                              void* dst, size_t dstCapacity,
                                        const void* src, size_t srcSize,
@@ -158,7 +159,7 @@ ZSTDLIB_API size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx,
 
 
 /*-**************************
-*  Advanced Dictionary API
+*  Fast Dictionary API
 ****************************/
 /*! ZSTD_createCDict() :
 *   Create a digested dictionary, ready to start compression operation without startup delay.
@@ -168,8 +169,8 @@ ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict(const void* dict, size_t dictSize, int
 ZSTDLIB_API size_t      ZSTD_freeCDict(ZSTD_CDict* CDict);
 
 /*! ZSTD_compress_usingCDict() :
-*   Compression using a pre-digested Dictionary.
-*   Much faster than ZSTD_compress_usingDict() when same dictionary is used multiple times.
+*   Compression using a digested Dictionary.
+*   Faster startup than ZSTD_compress_usingDict(), recommended when same dictionary is used multiple times.
 *   Note that compression level is decided during dictionary creation */
 ZSTDLIB_API size_t ZSTD_compress_usingCDict(ZSTD_CCtx* cctx,
                                             void* dst, size_t dstCapacity,
@@ -184,15 +185,14 @@ ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict(const void* dict, size_t dictSize);
 ZSTDLIB_API size_t      ZSTD_freeDDict(ZSTD_DDict* ddict);
 
 /*! ZSTD_decompress_usingDDict() :
-*   Decompression using a pre-digested Dictionary
-*   Much faster than ZSTD_decompress_usingDict() when same dictionary is used multiple times. */
+*   Decompression using a digested Dictionary
+*   Faster startup than ZSTD_decompress_usingDict(), recommended when same dictionary is used multiple times. */
 ZSTDLIB_API size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
                                               void* dst, size_t dstCapacity,
                                         const void* src, size_t srcSize,
                                         const ZSTD_DDict* ddict);
 
 
-
 #ifdef ZSTD_STATIC_LINKING_ONLY
 
 /* ====================================================================================
@@ -203,7 +203,7 @@ ZSTDLIB_API size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
  * ==================================================================================== */
 
 /*--- Constants ---*/
-#define ZSTD_MAGICNUMBER            0xFD2FB527   /* v0.7 */
+#define ZSTD_MAGICNUMBER            0xFD2FB528   /* v0.8 */
 #define ZSTD_MAGIC_SKIPPABLE_START  0x184D2A50U
 
 #define ZSTD_WINDOWLOG_MAX_32  25
@@ -215,7 +215,6 @@ ZSTDLIB_API size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
 #define ZSTD_HASHLOG_MAX       ZSTD_WINDOWLOG_MAX
 #define ZSTD_HASHLOG_MIN       12
 #define ZSTD_HASHLOG3_MAX      17
-#define ZSTD_HASHLOG3_MIN      15
 #define ZSTD_SEARCHLOG_MAX    (ZSTD_WINDOWLOG_MAX-1)
 #define ZSTD_SEARCHLOG_MIN      1
 #define ZSTD_SEARCHLENGTH_MAX   7
@@ -265,7 +264,7 @@ typedef struct { ZSTD_allocFunction customAlloc; ZSTD_freeFunction customFree; v
 /*! ZSTD_estimateCCtxSize() :
  *  Gives the amount of memory allocated for a ZSTD_CCtx given a set of compression parameters.
  *  `frameContentSize` is an optional parameter, provide `0` if unknown */
-ZSTDLIB_API size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams, unsigned long long frameContentSize);
+ZSTDLIB_API size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams);
 
 /*! ZSTD_createCCtx_advanced() :
  *  Create a ZSTD compression context using external alloc and free functions */
@@ -280,8 +279,6 @@ ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictS
  *  Gives the amount of memory used by a given ZSTD_CCtx */
 ZSTDLIB_API size_t ZSTD_sizeofCCtx(const ZSTD_CCtx* cctx);
 
-ZSTDLIB_API unsigned ZSTD_maxCLevel (void);
-
 /*! ZSTD_getParams() :
 *   same as ZSTD_getCParams(), but @return a full `ZSTD_parameters` object instead of a `ZSTD_compressionParameters`.
 *   All fields of `ZSTD_frameParameters` are set to default (0) */
@@ -326,15 +323,20 @@ ZSTDLIB_API size_t ZSTD_sizeofDCtx(const ZSTD_DCtx* dctx);
 
 
 /* ******************************************************************
-*  Streaming functions (direct mode - synchronous and buffer-less)
+*  Buffer-less streaming functions (synchronous mode)
 ********************************************************************/
+/* This is an advanced API, giving full control over buffer management, for users which need direct control over memory.
+*  But it's also a complex one, with a lot of restrictions (documented below).
+*  For an easier streaming API, look into common/zbuff.h
+*  which removes all restrictions by allocating and managing its own internal buffer */
+
 ZSTDLIB_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel);
 ZSTDLIB_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel);
 ZSTDLIB_API size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_parameters params, unsigned long long pledgedSrcSize);
 ZSTDLIB_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx);
 
 ZSTDLIB_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
-ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity);
+ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
 
 /*
   A ZSTD_CCtx object is required to track streaming operations.
@@ -349,7 +351,7 @@ ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapaci
   Then, consume your input using ZSTD_compressContinue().
   There are some important considerations to keep in mind when using this advanced function :
   - ZSTD_compressContinue() has no internal buffer. It uses externally provided buffer only.
-  - Interface is synchronous : input is consumed entirely and produce 1 (or more) compressed blocks.
+  - Interface is synchronous : input is consumed entirely and produce 1+ (or more) compressed blocks.
   - Caller must ensure there is enough space in `dst` to store compressed data under worst case scenario.
     Worst case evaluation is provided by ZSTD_compressBound().
     ZSTD_compressContinue() doesn't guarantee recover after a failed compression.
@@ -358,9 +360,9 @@ ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapaci
   - ZSTD_compressContinue() detects that prior input has been overwritten when `src` buffer overlaps.
     In which case, it will "discard" the relevant memory section from its history.
 
-
-  Finish a frame with ZSTD_compressEnd(), which will write the epilogue.
-  Without epilogue, frames will be considered unfinished (broken) by decoders.
+  Finish a frame with ZSTD_compressEnd(), which will write the last block(s) and optional checksum.
+  It's possible to use a NULL,0 src content, in which case, it will write a final empty block to end the frame,
+  Without last block mark, frames will be considered unfinished (broken) by decoders.
 
   You can then reuse `ZSTD_CCtx` (ZSTD_compressBegin()) to compress some new frame.
 */
@@ -372,7 +374,7 @@ typedef struct {
     unsigned checksumFlag;
 } ZSTD_frameParams;
 
-ZSTDLIB_API size_t ZSTD_getFrameParams(ZSTD_frameParams* fparamsPtr, const void* src, size_t srcSize);   /**< doesn't consume input */
+ZSTDLIB_API size_t ZSTD_getFrameParams(ZSTD_frameParams* fparamsPtr, const void* src, size_t srcSize);   /**< doesn't consume input, see details below */
 
 ZSTDLIB_API size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx);
 ZSTDLIB_API size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
@@ -381,49 +383,58 @@ ZSTDLIB_API void   ZSTD_copyDCtx(ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx)
 ZSTDLIB_API size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx);
 ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
 
+typedef enum { ZSTDnit_frameHeader, ZSTDnit_blockHeader, ZSTDnit_block, ZSTDnit_lastBlock, ZSTDnit_checksum, ZSTDnit_skippableFrame } ZSTD_nextInputType_e;
+ZSTDLIB_API ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx);
+
 /*
-  Streaming decompression, direct mode (bufferless)
+  Buffer-less streaming decompression (synchronous mode)
 
   A ZSTD_DCtx object is required to track streaming operations.
   Use ZSTD_createDCtx() / ZSTD_freeDCtx() to manage it.
   A ZSTD_DCtx object can be re-used multiple times.
 
-  First optional operation is to retrieve frame parameters, using ZSTD_getFrameParams(), which doesn't consume the input.
-  It can provide the minimum size of rolling buffer required to properly decompress data (`windowSize`),
-  and optionally the final size of uncompressed content.
-  (Note : content size is an optional info that may not be present. 0 means : content size unknown)
-  Frame parameters are extracted from the beginning of compressed frame.
-  The amount of data to read is variable, from ZSTD_frameHeaderSize_min to ZSTD_frameHeaderSize_max (so if `srcSize` >= ZSTD_frameHeaderSize_max, it will always work)
-  If `srcSize` is too small for operation to succeed, function will return the minimum size it requires to produce a result.
-  Result : 0 when successful, it means the ZSTD_frameParams structure has been filled.
-          >0 : means there is not enough data into `src`. Provides the expected size to successfully decode header.
-           errorCode, which can be tested using ZSTD_isError()
+  First typical operation is to retrieve frame parameters, using ZSTD_getFrameParams().
+  It fills a ZSTD_frameParams structure which provide important information to correctly decode the frame,
+  such as the minimum rolling buffer size to allocate to decompress data (`windowSize`),
+  and the dictionary ID used.
+  (Note : content size is optional, it may not be present. 0 means : content size unknown).
+  Note that these values could be wrong, either because of data malformation, or because an attacker is spoofing deliberate false information.
+  As a consequence, check that values remain within valid application range, especially `windowSize`, before allocation.
+  Each application can set its own limit, depending on local restrictions. For extended interoperability, it is recommended to support at least 8 MB.
+  Frame parameters are extracted from the beginning of the compressed frame.
+  Data fragment must be large enough to ensure successful decoding, typically `ZSTD_frameHeaderSize_max` bytes.
+  @result : 0 : successful decoding, the `ZSTD_frameParams` structure is correctly filled.
+           >0 : `srcSize` is too small, please provide at least @result bytes on next attempt.
+           errorCode, which can be tested using ZSTD_isError().
 
   Start decompression, with ZSTD_decompressBegin() or ZSTD_decompressBegin_usingDict().
   Alternatively, you can copy a prepared context, using ZSTD_copyDCtx().
 
   Then use ZSTD_nextSrcSizeToDecompress() and ZSTD_decompressContinue() alternatively.
-  ZSTD_nextSrcSizeToDecompress() tells how much bytes to provide as 'srcSize' to ZSTD_decompressContinue().
-  ZSTD_decompressContinue() requires this exact amount of bytes, or it will fail.
+  ZSTD_nextSrcSizeToDecompress() tells how many bytes to provide as 'srcSize' to ZSTD_decompressContinue().
+  ZSTD_decompressContinue() requires this _exact_ amount of bytes, or it will fail.
 
   @result of ZSTD_decompressContinue() is the number of bytes regenerated within 'dst' (necessarily <= dstCapacity).
-  It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some header.
+  It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some metadata item.
+  It can also be an error code, which can be tested with ZSTD_isError().
 
   ZSTD_decompressContinue() needs previous data blocks during decompression, up to `windowSize`.
   They should preferably be located contiguously, prior to current block.
   Alternatively, a round buffer of sufficient size is also possible. Sufficient size is determined by frame parameters.
   ZSTD_decompressContinue() is very sensitive to contiguity,
   if 2 blocks don't follow each other, make sure that either the compressor breaks contiguity at the same place,
-    or that previous contiguous segment is large enough to properly handle maximum back-reference.
+  or that previous contiguous segment is large enough to properly handle maximum back-reference.
 
   A frame is fully decoded when ZSTD_nextSrcSizeToDecompress() returns zero.
   Context can then be reset to start a new decompression.
 
+  Note : it's possible to know if next input to present is a header or a block, using ZSTD_nextInputType().
+  This information is not required to properly decode a frame.
 
   == Special case : skippable frames ==
 
-  Skippable frames allow the integration of user-defined data into a flow of concatenated frames.
-  Skippable frames will be ignored (skipped) by a decompressor. The format of skippable frame is following:
+  Skippable frames allow integration of user-defined data into a flow of concatenated frames.
+  Skippable frames will be ignored (skipped) by a decompressor. The format of skippable frames is as follows :
   a) Skippable frame ID - 4 Bytes, Little endian format, any value from 0x184D2A50 to 0x184D2A5F
   b) Frame Size - 4 Bytes, Little endian format, unsigned 32-bits
   c) Frame Content - any content (User Data) of length equal to Frame Size
@@ -437,13 +448,10 @@ ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t ds
 *  Block functions
 ****************************************/
 /*! Block functions produce and decode raw zstd blocks, without frame metadata.
-    Frame metadata cost is typically ~18 bytes, which is non-negligible on very small blocks.
+    Frame metadata cost is typically ~18 bytes, which can be non-negligible for very small blocks (< 100 bytes).
     User will have to take in charge required information to regenerate data, such as compressed and content sizes.
 
     A few rules to respect :
-    - Uncompressed block size must be <= ZSTD_BLOCKSIZE_MAX (128 KB)
-      + If you need to compress more, cut data into multiple blocks
-      + Consider using the regular ZSTD_compress() instead, as frame metadata costs become negligible when source size is large.
     - Compressing and decompressing require a context structure
       + Use ZSTD_createCCtx() and ZSTD_createDCtx()
     - It is necessary to init context before starting
@@ -451,19 +459,22 @@ ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t ds
       + decompression : ZSTD_decompressBegin()
       + variants _usingDict() are also allowed
       + copyCCtx() and copyDCtx() work too
+    - Block size is limited, it must be <= ZSTD_getBlockSizeMax()
+      + If you need to compress more, cut data into multiple blocks
+      + Consider using the regular ZSTD_compress() instead, as frame metadata costs become negligible when source size is large.
     - When a block is considered not compressible enough, ZSTD_compressBlock() result will be zero.
       In which case, nothing is produced into `dst`.
       + User must test for such outcome and deal directly with uncompressed data
       + ZSTD_decompressBlock() doesn't accept uncompressed data as input !!!
       + In case of multiple successive blocks, decoder must be informed of uncompressed block existence to follow proper history.
         Use ZSTD_insertBlock() in such a case.
-        Insert block once it's copied into its final position.
 */
 
-#define ZSTD_BLOCKSIZE_MAX (128 * 1024)   /* define, for static allocation */
+#define ZSTD_BLOCKSIZE_ABSOLUTEMAX (128 * 1024)   /* define, for static allocation */
+ZSTDLIB_API size_t ZSTD_getBlockSizeMax(ZSTD_CCtx* cctx);
 ZSTDLIB_API size_t ZSTD_compressBlock  (ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
 ZSTDLIB_API size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
-ZSTDLIB_API size_t ZSTD_insertBlock(ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize);  /**< insert block into `dctx` history. Useful to track uncompressed blocks */
+ZSTDLIB_API size_t ZSTD_insertBlock(ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize);  /**< insert block into `dctx` history. Useful for uncompressed blocks */
 
 
 #endif   /* ZSTD_STATIC_LINKING_ONLY */
diff --git a/C/zstd/zstd_compress.c b/C/zstd/zstd_compress.c
index 15a79d70..56c63601 100644
--- a/C/zstd/zstd_compress.c
+++ b/C/zstd/zstd_compress.c
@@ -66,6 +66,8 @@
 *  Constants
 ***************************************/
 static const U32 g_searchStrength = 8;   /* control skip over incompressible data */
+#define HASH_READ_SIZE 8
+typedef enum { ZSTDcs_created=0, ZSTDcs_init, ZSTDcs_ongoing, ZSTDcs_ending } ZSTD_compressionStage_e;
 
 
 /*-*************************************
@@ -73,37 +75,14 @@ static const U32 g_searchStrength = 8;   /* control skip over incompressible dat
 ***************************************/
 size_t ZSTD_compressBound(size_t srcSize) { return FSE_compressBound(srcSize) + 12; }
 
-static U32 ZSTD_highbit32(U32 val)
-{
-#   if defined(_MSC_VER)   /* Visual */
-    unsigned long r=0;
-    _BitScanReverse(&r, val);
-    return (unsigned)r;
-#   elif defined(__GNUC__) && (__GNUC__ >= 3)   /* GCC Intrinsic */
-    return 31 - __builtin_clz(val);
-#   else   /* Software version */
-    static const int DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 };
-    U32 v = val;
-    int r;
-    v |= v >> 1;
-    v |= v >> 2;
-    v |= v >> 4;
-    v |= v >> 8;
-    v |= v >> 16;
-    r = DeBruijnClz[(U32)(v * 0x07C4ACDDU) >> 27];
-    return r;
-#   endif
-}
 
 /*-*************************************
 *  Sequence storage
 ***************************************/
 static void ZSTD_resetSeqStore(seqStore_t* ssPtr)
 {
-    ssPtr->offset = ssPtr->offsetStart;
     ssPtr->lit = ssPtr->litStart;
-    ssPtr->litLength = ssPtr->litLengthStart;
-    ssPtr->matchLength = ssPtr->matchLengthStart;
+    ssPtr->sequences = ssPtr->sequencesStart;
     ssPtr->longLengthID = 0;
 }
 
@@ -122,7 +101,7 @@ struct ZSTD_CCtx_s
     U32   nextToUpdate3;    /* index from which to continue dictionary update */
     U32   hashLog3;         /* dispatch table : larger == faster, more memory */
     U32   loadedDictEnd;
-    U32   stage;            /* 0: created; 1: init,dictLoad; 2:started */
+    ZSTD_compressionStage_e stage;
     U32   rep[ZSTD_REP_NUM];
     U32   savedRep[ZSTD_REP_NUM];
     U32   dictID;
@@ -140,9 +119,9 @@ struct ZSTD_CCtx_s
     U32* chainTable;
     HUF_CElt* hufTable;
     U32 flagStaticTables;
-    FSE_CTable offcodeCTable   [FSE_CTABLE_SIZE_U32(OffFSELog, MaxOff)];
-    FSE_CTable matchlengthCTable [FSE_CTABLE_SIZE_U32(MLFSELog, MaxML)];
-    FSE_CTable litlengthCTable   [FSE_CTABLE_SIZE_U32(LLFSELog, MaxLL)];
+    FSE_CTable offcodeCTable  [FSE_CTABLE_SIZE_U32(OffFSELog, MaxOff)];
+    FSE_CTable matchlengthCTable[FSE_CTABLE_SIZE_U32(MLFSELog, MaxML)];
+    FSE_CTable litlengthCTable  [FSE_CTABLE_SIZE_U32(LLFSELog, MaxLL)];
 };
 
 ZSTD_CCtx* ZSTD_createCCtx(void)
@@ -152,7 +131,7 @@ ZSTD_CCtx* ZSTD_createCCtx(void)
 
 ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem)
 {
-    ZSTD_CCtx* ctx;
+    ZSTD_CCtx* cctx;
 
     if (!customMem.customAlloc && !customMem.customFree)
         customMem = defaultCustomMem;
@@ -160,11 +139,11 @@ ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem)
     if (!customMem.customAlloc || !customMem.customFree)
         return NULL;
 
-    ctx = (ZSTD_CCtx*) customMem.customAlloc(customMem.opaque, sizeof(ZSTD_CCtx));
-    if (!ctx) return NULL;
-    memset(ctx, 0, sizeof(ZSTD_CCtx));
-    memcpy(&ctx->customMem, &customMem, sizeof(ZSTD_customMem));
-    return ctx;
+    cctx = (ZSTD_CCtx*) customMem.customAlloc(customMem.opaque, sizeof(ZSTD_CCtx));
+    if (!cctx) return NULL;
+    memset(cctx, 0, sizeof(ZSTD_CCtx));
+    memcpy(&(cctx->customMem), &customMem, sizeof(ZSTD_customMem));
+    return cctx;
 }
 
 size_t ZSTD_freeCCtx(ZSTD_CCtx* cctx)
@@ -249,20 +228,18 @@ ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, u
 }
 
 
-size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams, unsigned long long frameContentSize)
+size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams)
 {
-    const size_t blockSize = MIN(ZSTD_BLOCKSIZE_MAX, (size_t)1 << cParams.windowLog);
-    const U32    divider = (cParams.searchLength==3) ? 3 : 4;
-    const size_t maxNbSeq = blockSize / divider;
-    const size_t tokenSpace = blockSize + 11*maxNbSeq;
+    size_t const blockSize = MIN(ZSTD_BLOCKSIZE_ABSOLUTEMAX, (size_t)1 << cParams.windowLog);
+    U32    const divider = (cParams.searchLength==3) ? 3 : 4;
+    size_t const maxNbSeq = blockSize / divider;
+    size_t const tokenSpace = blockSize + 11*maxNbSeq;
 
-    const size_t chainSize = (cParams.strategy == ZSTD_fast) ? 0 : (1 << cParams.chainLog);
-    const size_t hSize = ((size_t)1) << cParams.hashLog;
-    const U32 hashLog3 = (cParams.searchLength>3) ? 0 :
-                        ( (!frameContentSize || frameContentSize >= 8192) ? ZSTD_HASHLOG3_MAX :
-                          ((frameContentSize >= 2048) ? ZSTD_HASHLOG3_MIN + 1 : ZSTD_HASHLOG3_MIN) );
-    const size_t h3Size = ((size_t)1) << hashLog3;
-    const size_t tableSpace = (chainSize + hSize + h3Size) * sizeof(U32);
+    size_t const chainSize = (cParams.strategy == ZSTD_fast) ? 0 : (1 << cParams.chainLog);
+    size_t const hSize = ((size_t)1) << cParams.hashLog;
+    U32    const hashLog3 = (cParams.searchLength>3) ? 0 : MIN(ZSTD_HASHLOG3_MAX, cParams.windowLog);
+    size_t const h3Size = ((size_t)1) << hashLog3;
+    size_t const tableSpace = (chainSize + hSize + h3Size) * sizeof(U32);
 
     size_t const optSpace = ((MaxML+1) + (MaxLL+1) + (MaxOff+1) + (1<<Litbits))*sizeof(U32)
                           + (ZSTD_OPT_NUM+1)*(sizeof(ZSTD_match_t) + sizeof(ZSTD_optimal_t));
@@ -275,19 +252,19 @@ size_t ZSTD_estimateCCtxSize(ZSTD_compressionParameters cParams, unsigned long l
 /*! ZSTD_resetCCtx_advanced() :
     note : 'params' is expected to be validated */
 static size_t ZSTD_resetCCtx_advanced (ZSTD_CCtx* zc,
-                                       ZSTD_parameters params, U64 frameContentSize, U32 reset)
+                                       ZSTD_parameters params, U64 frameContentSize,
+                                       U32 reset)
 {   /* note : params considered validated here */
-    const size_t blockSize = MIN(ZSTD_BLOCKSIZE_MAX, (size_t)1 << params.cParams.windowLog);
-    const U32    divider = (params.cParams.searchLength==3) ? 3 : 4;
-    const size_t maxNbSeq = blockSize / divider;
-    const size_t tokenSpace = blockSize + 11*maxNbSeq;
-    const size_t chainSize = (params.cParams.strategy == ZSTD_fast) ? 0 : (1 << params.cParams.chainLog);
-    const size_t hSize = ((size_t)1) << params.cParams.hashLog;
-    const U32 hashLog3 = (params.cParams.searchLength>3) ? 0 :
-                        ( (!frameContentSize || frameContentSize >= 8192) ? ZSTD_HASHLOG3_MAX :
-                          ((frameContentSize >= 2048) ? ZSTD_HASHLOG3_MIN + 1 : ZSTD_HASHLOG3_MIN) );
-    const size_t h3Size = ((size_t)1) << hashLog3;
-    const size_t tableSpace = (chainSize + hSize + h3Size) * sizeof(U32);
+    size_t const blockSize = MIN(ZSTD_BLOCKSIZE_ABSOLUTEMAX, (size_t)1 << params.cParams.windowLog);
+    U32    const divider = (params.cParams.searchLength==3) ? 3 : 4;
+    size_t const maxNbSeq = blockSize / divider;
+    size_t const tokenSpace = blockSize + 11*maxNbSeq;
+    size_t const chainSize = (params.cParams.strategy == ZSTD_fast) ? 0 : (1 << params.cParams.chainLog);
+    size_t const hSize = ((size_t)1) << params.cParams.hashLog;
+    U32    const hashLog3 = (params.cParams.searchLength>3) ? 0 : MIN(ZSTD_HASHLOG3_MAX, params.cParams.windowLog);
+    size_t const h3Size = ((size_t)1) << hashLog3;
+    size_t const tableSpace = (chainSize + hSize + h3Size) * sizeof(U32);
+    void* ptr;
 
     /* Check if workSpace is large enough, alloc a new one if needed */
     {   size_t const optSpace = ((MaxML+1) + (MaxLL+1) + (MaxOff+1) + (1<<Litbits))*sizeof(U32)
@@ -307,10 +284,10 @@ static size_t ZSTD_resetCCtx_advanced (ZSTD_CCtx* zc,
     zc->hashTable = (U32*)(zc->workSpace);
     zc->chainTable = zc->hashTable + hSize;
     zc->hashTable3 = zc->chainTable + chainSize;
-    zc->seqStore.buffer = zc->hashTable3 + h3Size;
-    zc->hufTable = (HUF_CElt*)zc->seqStore.buffer;
+    ptr = zc->hashTable3 + h3Size;
+    zc->hufTable = (HUF_CElt*)ptr;
     zc->flagStaticTables = 0;
-    zc->seqStore.buffer = ((U32*)(zc->seqStore.buffer)) + 256;  /* note : HUF_CElt* is incomplete type, size is simulated using U32 */
+    ptr = ((U32*)ptr) + 256;  /* note : HUF_CElt* is incomplete type, size is simulated using U32 */
 
     zc->nextToUpdate = 1;
     zc->nextSrc = NULL;
@@ -324,27 +301,25 @@ static size_t ZSTD_resetCCtx_advanced (ZSTD_CCtx* zc,
     { int i; for (i=0; i<ZSTD_REP_NUM; i++) zc->rep[i] = repStartValue[i]; }
 
     if (params.cParams.strategy == ZSTD_btopt) {
-        zc->seqStore.litFreq = (U32*)(zc->seqStore.buffer);
+        zc->seqStore.litFreq = (U32*)ptr;
         zc->seqStore.litLengthFreq = zc->seqStore.litFreq + (1<<Litbits);
         zc->seqStore.matchLengthFreq = zc->seqStore.litLengthFreq + (MaxLL+1);
         zc->seqStore.offCodeFreq = zc->seqStore.matchLengthFreq + (MaxML+1);
-        zc->seqStore.buffer = zc->seqStore.offCodeFreq + (MaxOff+1);
-        zc->seqStore.matchTable = (ZSTD_match_t*)zc->seqStore.buffer;
-        zc->seqStore.buffer = zc->seqStore.matchTable + ZSTD_OPT_NUM+1;
-        zc->seqStore.priceTable = (ZSTD_optimal_t*)zc->seqStore.buffer;
-        zc->seqStore.buffer = zc->seqStore.priceTable + ZSTD_OPT_NUM+1;
+        ptr = zc->seqStore.offCodeFreq + (MaxOff+1);
+        zc->seqStore.matchTable = (ZSTD_match_t*)ptr;
+        ptr = zc->seqStore.matchTable + ZSTD_OPT_NUM+1;
+        zc->seqStore.priceTable = (ZSTD_optimal_t*)ptr;
+        ptr = zc->seqStore.priceTable + ZSTD_OPT_NUM+1;
         zc->seqStore.litLengthSum = 0;
     }
-    zc->seqStore.offsetStart = (U32*)(zc->seqStore.buffer);
-    zc->seqStore.buffer = zc->seqStore.offsetStart + maxNbSeq;
-    zc->seqStore.litLengthStart = (U16*)zc->seqStore.buffer;
-    zc->seqStore.matchLengthStart = zc->seqStore.litLengthStart + maxNbSeq;
-    zc->seqStore.llCodeStart = (BYTE*) (zc->seqStore.matchLengthStart + maxNbSeq);
-    zc->seqStore.mlCodeStart = zc->seqStore.llCodeStart + maxNbSeq;
-    zc->seqStore.offCodeStart = zc->seqStore.mlCodeStart + maxNbSeq;
-    zc->seqStore.litStart = zc->seqStore.offCodeStart + maxNbSeq;
+    zc->seqStore.sequencesStart = (seqDef*)ptr;
+    ptr = zc->seqStore.sequencesStart + maxNbSeq;
+    zc->seqStore.llCode = (BYTE*) ptr;
+    zc->seqStore.mlCode = zc->seqStore.llCode + maxNbSeq;
+    zc->seqStore.ofCode = zc->seqStore.mlCode + maxNbSeq;
+    zc->seqStore.litStart = zc->seqStore.ofCode + maxNbSeq;
 
-    zc->stage = 1;
+    zc->stage = ZSTDcs_init;
     zc->dictID = 0;
     zc->loadedDictEnd = 0;
 
@@ -354,21 +329,21 @@ static size_t ZSTD_resetCCtx_advanced (ZSTD_CCtx* zc,
 
 /*! ZSTD_copyCCtx() :
 *   Duplicate an existing context `srcCCtx` into another one `dstCCtx`.
-*   Only works during stage 1 (i.e. after creation, but before first call to ZSTD_compressContinue()).
+*   Only works during stage ZSTDcs_init (i.e. after creation, but before first call to ZSTD_compressContinue()).
 *   @return : 0, or an error code */
 size_t ZSTD_copyCCtx(ZSTD_CCtx* dstCCtx, const ZSTD_CCtx* srcCCtx)
 {
-    if (srcCCtx->stage!=1) return ERROR(stage_wrong);
+    if (srcCCtx->stage!=ZSTDcs_init) return ERROR(stage_wrong);
 
     memcpy(&dstCCtx->customMem, &srcCCtx->customMem, sizeof(ZSTD_customMem));
     ZSTD_resetCCtx_advanced(dstCCtx, srcCCtx->params, srcCCtx->frameContentSize, 0);
     dstCCtx->params.fParams.contentSizeFlag = 0;   /* content size different from the one set during srcCCtx init */
 
     /* copy tables */
-    {   const size_t chainSize = (srcCCtx->params.cParams.strategy == ZSTD_fast) ? 0 : (1 << srcCCtx->params.cParams.chainLog);
-        const size_t hSize = ((size_t)1) << srcCCtx->params.cParams.hashLog;
-        const size_t h3Size = (size_t)1 << srcCCtx->hashLog3;
-        const size_t tableSpace = (chainSize + hSize + h3Size) * sizeof(U32);
+    {   size_t const chainSize = (srcCCtx->params.cParams.strategy == ZSTD_fast) ? 0 : (1 << srcCCtx->params.cParams.chainLog);
+        size_t const hSize = ((size_t)1) << srcCCtx->params.cParams.hashLog;
+        size_t const h3Size = (size_t)1 << srcCCtx->hashLog3;
+        size_t const tableSpace = (chainSize + hSize + h3Size) * sizeof(U32);
         memcpy(dstCCtx->workSpace, srcCCtx->workSpace, tableSpace);
     }
 
@@ -411,13 +386,13 @@ static void ZSTD_reduceTable (U32* const table, U32 const size, U32 const reduce
 *   rescale all indexes to avoid future overflow (indexes are U32) */
 static void ZSTD_reduceIndex (ZSTD_CCtx* zc, const U32 reducerValue)
 {
-    { const U32 hSize = 1 << zc->params.cParams.hashLog;
+    { U32 const hSize = 1 << zc->params.cParams.hashLog;
       ZSTD_reduceTable(zc->hashTable, hSize, reducerValue); }
 
-    { const U32 chainSize = (zc->params.cParams.strategy == ZSTD_fast) ? 0 : (1 << zc->params.cParams.chainLog);
+    { U32 const chainSize = (zc->params.cParams.strategy == ZSTD_fast) ? 0 : (1 << zc->params.cParams.chainLog);
       ZSTD_reduceTable(zc->chainTable, chainSize, reducerValue); }
 
-    { const U32 h3Size = (zc->hashLog3) ? 1 << zc->hashLog3 : 0;
+    { U32 const h3Size = (zc->hashLog3) ? 1 << zc->hashLog3 : 0;
       ZSTD_reduceTable(zc->hashTable3, h3Size, reducerValue); }
 }
 
@@ -426,149 +401,13 @@ static void ZSTD_reduceIndex (ZSTD_CCtx* zc, const U32 reducerValue)
 *  Block entropic compression
 *********************************************************/
 
-/* Frame format description
-   Frame Header -  [ Block Header - Block ] - Frame End
-   1) Frame Header
-      - 4 bytes : Magic Number : ZSTD_MAGICNUMBER (defined within zstd_static.h)
-      - 1 byte  : Frame Header Descriptor
-      - 1-13 bytes : Optional fields
-   2) Block Header
-      - 3 bytes, starting with a 2-bits descriptor
-                 Uncompressed, Compressed, Frame End, unused
-   3) Block
-      See Block Format Description
-   4) Frame End
-      - 3 bytes, compatible with Block Header
-*/
-
-
-/* Frame header :
-
-   1 byte - FrameHeaderDescription :
-   bit 0-1 : dictID (0, 1, 2 or 4 bytes)
-   bit 2-4 : reserved (must be zero)
-   bit 5   : SkippedWindowLog (if 1, WindowLog byte is not present)
-   bit 6-7 : FrameContentFieldsize (0, 2, 4, or 8)
-             if (SkippedWindowLog && !FrameContentFieldsize) FrameContentFieldsize=1;
-
-   Optional : WindowLog (0 or 1 byte)
-   bit 0-2 : octal Fractional (1/8th)
-   bit 3-7 : Power of 2, with 0 = 1 KB (up to 2 TB)
-
-   Optional : content size (0, 1, 2, 4 or 8 bytes)
-   0 : unknown
-   1 : 0-255 bytes
-   2 : 256 - 65535+256
-   8 : up to 16 exa
-
-   Optional : dictID (0, 1, 2 or 4 bytes)
-   Automatic adaptation
-   0 : no dictID
-   1 : 1 - 255
-   2 : 256 - 65535
-   4 : all other values
-*/
-
-
-/* Block format description
-
-   Block = Literals Section - Sequences Section
-   Prerequisite : size of (compressed) block, maximum size of regenerated data
-
-   1) Literal Section
-
-   1.1) Header : 1-5 bytes
-        flags: 2 bits
-            00 compressed by Huff0
-            01 repeat
-            10 is Raw (uncompressed)
-            11 is Rle
-            Note : using 01 => Huff0 with precomputed table ?
-            Note : delta map ? => compressed ?
-
-   1.1.1) Huff0-compressed literal block : 3-5 bytes
-            srcSize < 1 KB => 3 bytes (2-2-10-10) => single stream
-            srcSize < 1 KB => 3 bytes (2-2-10-10)
-            srcSize < 16KB => 4 bytes (2-2-14-14)
-            else           => 5 bytes (2-2-18-18)
-            big endian convention
-
-   1.1.2) Raw (uncompressed) literal block header : 1-3 bytes
-        size :  5 bits: (IS_RAW<<6) + (0<<4) + size
-               12 bits: (IS_RAW<<6) + (2<<4) + (size>>8)
-                        size&255
-               20 bits: (IS_RAW<<6) + (3<<4) + (size>>16)
-                        size>>8&255
-                        size&255
-
-   1.1.3) Rle (repeated single byte) literal block header : 1-3 bytes
-        size :  5 bits: (IS_RLE<<6) + (0<<4) + size
-               12 bits: (IS_RLE<<6) + (2<<4) + (size>>8)
-                        size&255
-               20 bits: (IS_RLE<<6) + (3<<4) + (size>>16)
-                        size>>8&255
-                        size&255
-
-   1.1.4) Huff0-compressed literal block, using precomputed CTables : 3-5 bytes
-            srcSize < 1 KB => 3 bytes (2-2-10-10) => single stream
-            srcSize < 1 KB => 3 bytes (2-2-10-10)
-            srcSize < 16KB => 4 bytes (2-2-14-14)
-            else           => 5 bytes (2-2-18-18)
-            big endian convention
-
-        1- CTable available (stored into workspace)
-        2- Small input (fast heuristic ? Full comparison ? depend on clevel ?)
-
-
-   1.2) Literal block content
-
-   1.2.1) Huff0 block, using sizes from header
-        See Huff0 format
-
-   1.2.2) Huff0 block, using prepared table
-
-   1.2.3) Raw content
-
-   1.2.4) single byte
-
-
-   2) Sequences section
-
-      - Nb Sequences : 2 bytes, little endian
-      - Control Token : 1 byte (see below)
-      - Dumps Length : 1 or 2 bytes (depending on control token)
-      - Dumps : as stated by dumps length
-      - Literal Lengths FSE table (as needed depending on encoding method)
-      - Offset Codes FSE table (as needed depending on encoding method)
-      - Match Lengths FSE table (as needed depending on encoding method)
-
-    2.1) Control Token
-      8 bits, divided as :
-      0-1 : dumpsLength
-      2-3 : MatchLength, FSE encoding method
-      4-5 : Offset Codes, FSE encoding method
-      6-7 : Literal Lengths, FSE encoding method
-
-      FSE encoding method :
-      FSE_ENCODING_RAW : uncompressed; no header
-      FSE_ENCODING_RLE : single repeated value; header 1 byte
-      FSE_ENCODING_STATIC : use prepared table; no header
-      FSE_ENCODING_DYNAMIC : read NCount
-*/
+/* See zstd_compression_format.md for detailed format description */
 
 size_t ZSTD_noCompressBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize)
 {
-    BYTE* const ostart = (BYTE* const)dst;
-
     if (srcSize + ZSTD_blockHeaderSize > dstCapacity) return ERROR(dstSize_tooSmall);
-    memcpy(ostart + ZSTD_blockHeaderSize, src, srcSize);
-
-    /* Build header */
-    ostart[0]  = (BYTE)(srcSize>>16);
-    ostart[1]  = (BYTE)(srcSize>>8);
-    ostart[2]  = (BYTE) srcSize;
-    ostart[0] += (BYTE)(bt_raw<<6);   /* is a raw (uncompressed) block */
-
+    memcpy((BYTE*)dst + ZSTD_blockHeaderSize, src, srcSize);
+    MEM_writeLE24(dst, (U32)(srcSize << 2) + (U32)bt_raw);
     return ZSTD_blockHeaderSize+srcSize;
 }
 
@@ -576,24 +415,21 @@ size_t ZSTD_noCompressBlock (void* dst, size_t dstCapacity, const void* src, siz
 static size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize)
 {
     BYTE* const ostart = (BYTE* const)dst;
-    U32 const flSize = 1 + (srcSize>31) + (srcSize>4095);
+    U32   const flSize = 1 + (srcSize>31) + (srcSize>4095);
 
     if (srcSize + flSize > dstCapacity) return ERROR(dstSize_tooSmall);
 
     switch(flSize)
     {
         case 1: /* 2 - 1 - 5 */
-            ostart[0] = (BYTE)((lbt_raw<<6) + (0<<5) + srcSize);
+            ostart[0] = (BYTE)((U32)set_basic + (srcSize<<3));
             break;
         case 2: /* 2 - 2 - 12 */
-            ostart[0] = (BYTE)((lbt_raw<<6) + (2<<4) + (srcSize >> 8));
-            ostart[1] = (BYTE)srcSize;
+            MEM_writeLE16(ostart, (U16)((U32)set_basic + (1<<2) + (srcSize<<4)));
             break;
         default:   /*note : should not be necessary : flSize is within {1,2,3} */
         case 3: /* 2 - 2 - 20 */
-            ostart[0] = (BYTE)((lbt_raw<<6) + (3<<4) + (srcSize >> 16));
-            ostart[1] = (BYTE)(srcSize>>8);
-            ostart[2] = (BYTE)srcSize;
+            MEM_writeLE32(ostart, (U32)((U32)set_basic + (3<<2) + (srcSize<<4)));
             break;
     }
 
@@ -604,24 +440,21 @@ static size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void
 static size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize)
 {
     BYTE* const ostart = (BYTE* const)dst;
-    U32 const flSize = 1 + (srcSize>31) + (srcSize>4095);
+    U32   const flSize = 1 + (srcSize>31) + (srcSize>4095);
 
-    (void)dstCapacity;  /* dstCapacity guaranteed to be >=4, hence large enough */
+    (void)dstCapacity;  /* dstCapacity already guaranteed to be >=4, hence large enough */
 
     switch(flSize)
     {
         case 1: /* 2 - 1 - 5 */
-            ostart[0] = (BYTE)((lbt_rle<<6) + (0<<5) + srcSize);
+            ostart[0] = (BYTE)((U32)set_rle + (srcSize<<3));
             break;
         case 2: /* 2 - 2 - 12 */
-            ostart[0] = (BYTE)((lbt_rle<<6) + (2<<4) + (srcSize >> 8));
-            ostart[1] = (BYTE)srcSize;
+            MEM_writeLE16(ostart, (U16)((U32)set_rle + (1<<2) + (srcSize<<4)));
             break;
         default:   /*note : should not be necessary : flSize is necessarily within {1,2,3} */
         case 3: /* 2 - 2 - 20 */
-            ostart[0] = (BYTE)((lbt_rle<<6) + (3<<4) + (srcSize >> 16));
-            ostart[1] = (BYTE)(srcSize>>8);
-            ostart[2] = (BYTE)srcSize;
+            MEM_writeLE32(ostart, (U32)((U32)set_rle + (3<<2) + (srcSize<<4)));
             break;
     }
 
@@ -638,9 +471,9 @@ static size_t ZSTD_compressLiterals (ZSTD_CCtx* zc,
 {
     size_t const minGain = ZSTD_minGain(srcSize);
     size_t const lhSize = 3 + (srcSize >= 1 KB) + (srcSize >= 16 KB);
-    BYTE* const ostart = (BYTE*)dst;
+    BYTE*  const ostart = (BYTE*)dst;
     U32 singleStream = srcSize < 256;
-    litBlockType_t hType = lbt_huffman;
+    symbolEncodingType_e hType = set_compressed;
     size_t cLitSize;
 
 
@@ -652,15 +485,15 @@ static size_t ZSTD_compressLiterals (ZSTD_CCtx* zc,
 
     if (dstCapacity < lhSize+1) return ERROR(dstSize_tooSmall);   /* not enough space for compression */
     if (zc->flagStaticTables && (lhSize==3)) {
-        hType = lbt_repeat;
+        hType = set_repeat;
         singleStream = 1;
         cLitSize = HUF_compress1X_usingCTable(ostart+lhSize, dstCapacity-lhSize, src, srcSize, zc->hufTable);
     } else {
-        cLitSize = singleStream ? HUF_compress1X(ostart+lhSize, dstCapacity-lhSize, src, srcSize, 255, 12)
-                                : HUF_compress2 (ostart+lhSize, dstCapacity-lhSize, src, srcSize, 255, 12);
+        cLitSize = singleStream ? HUF_compress1X(ostart+lhSize, dstCapacity-lhSize, src, srcSize, 255, 11)
+                                : HUF_compress2 (ostart+lhSize, dstCapacity-lhSize, src, srcSize, 255, 11);
     }
 
-    if ((cLitSize==0) || (cLitSize >= srcSize - minGain))
+    if ((cLitSize==0) | (cLitSize >= srcSize - minGain))
         return ZSTD_noCompressLiterals(dst, dstCapacity, src, srcSize);
     if (cLitSize==1)
         return ZSTD_compressRleLiteralsBlock(dst, dstCapacity, src, srcSize);
@@ -669,79 +502,66 @@ static size_t ZSTD_compressLiterals (ZSTD_CCtx* zc,
     switch(lhSize)
     {
     case 3: /* 2 - 2 - 10 - 10 */
-        ostart[0] = (BYTE)((srcSize>>6) + (singleStream << 4) + (hType<<6));
-        ostart[1] = (BYTE)((srcSize<<2) + (cLitSize>>8));
-        ostart[2] = (BYTE)(cLitSize);
-        break;
+        {   U32 const lhc = hType + ((!singleStream) << 2) + ((U32)srcSize<<4) + ((U32)cLitSize<<14);
+            MEM_writeLE24(ostart, lhc);
+            break;
+        }
     case 4: /* 2 - 2 - 14 - 14 */
-        ostart[0] = (BYTE)((srcSize>>10) + (2<<4) +  (hType<<6));
-        ostart[1] = (BYTE)(srcSize>> 2);
-        ostart[2] = (BYTE)((srcSize<<6) + (cLitSize>>8));
-        ostart[3] = (BYTE)(cLitSize);
-        break;
+        {   U32 const lhc = hType + (2 << 2) + ((U32)srcSize<<4) + ((U32)cLitSize<<18);
+            MEM_writeLE32(ostart, lhc);
+            break;
+        }
     default:   /* should not be necessary, lhSize is only {3,4,5} */
     case 5: /* 2 - 2 - 18 - 18 */
-        ostart[0] = (BYTE)((srcSize>>14) + (3<<4) +  (hType<<6));
-        ostart[1] = (BYTE)(srcSize>>6);
-        ostart[2] = (BYTE)((srcSize<<2) + (cLitSize>>16));
-        ostart[3] = (BYTE)(cLitSize>>8);
-        ostart[4] = (BYTE)(cLitSize);
-        break;
+        {   U32 const lhc = hType + (3 << 2) + ((U32)srcSize<<4) + ((U32)cLitSize<<22);
+            MEM_writeLE32(ostart, lhc);
+            ostart[4] = (BYTE)(cLitSize >> 10);
+            break;
+        }
     }
     return lhSize+cLitSize;
 }
 
+static const BYTE LL_Code[64] = {  0,  1,  2,  3,  4,  5,  6,  7,
+                                   8,  9, 10, 11, 12, 13, 14, 15,
+                                  16, 16, 17, 17, 18, 18, 19, 19,
+                                  20, 20, 20, 20, 21, 21, 21, 21,
+                                  22, 22, 22, 22, 22, 22, 22, 22,
+                                  23, 23, 23, 23, 23, 23, 23, 23,
+                                  24, 24, 24, 24, 24, 24, 24, 24,
+                                  24, 24, 24, 24, 24, 24, 24, 24 };
 
-void ZSTD_seqToCodes(const seqStore_t* seqStorePtr, size_t const nbSeq)
+static const BYTE ML_Code[128] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+                                  16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+                                  32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37,
+                                  38, 38, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 39, 39,
+                                  40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
+                                  41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41,
+                                  42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
+                                  42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42 };
+
+
+void ZSTD_seqToCodes(const seqStore_t* seqStorePtr)
 {
-    /* LL codes */
-    {   static const BYTE LL_Code[64] = {  0,  1,  2,  3,  4,  5,  6,  7,
-                                           8,  9, 10, 11, 12, 13, 14, 15,
-                                          16, 16, 17, 17, 18, 18, 19, 19,
-                                          20, 20, 20, 20, 21, 21, 21, 21,
-                                          22, 22, 22, 22, 22, 22, 22, 22,
-                                          23, 23, 23, 23, 23, 23, 23, 23,
-                                          24, 24, 24, 24, 24, 24, 24, 24,
-                                          24, 24, 24, 24, 24, 24, 24, 24 };
-        const BYTE LL_deltaCode = 19;
-        const U16* const llTable = seqStorePtr->litLengthStart;
-        BYTE* const llCodeTable = seqStorePtr->llCodeStart;
-        size_t u;
-        for (u=0; u<nbSeq; u++) {
-            U32 const  ll = llTable[u];
-            llCodeTable[u] = (ll>63) ? (BYTE)ZSTD_highbit32(ll) + LL_deltaCode : LL_Code[ll];
-        }
-        if (seqStorePtr->longLengthID==1)
-            llCodeTable[seqStorePtr->longLengthPos] = MaxLL;
-    }
-
-    /* Offset codes */
-    {   const U32* const offsetTable = seqStorePtr->offsetStart;
-        BYTE* const ofCodeTable = seqStorePtr->offCodeStart;
-        size_t u;
-        for (u=0; u<nbSeq; u++) ofCodeTable[u] = (BYTE)ZSTD_highbit32(offsetTable[u]);
-    }
-
-    /* ML codes */
-    {   static const BYTE ML_Code[128] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
-                                          16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
-                                          32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37,
-                                          38, 38, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 39, 39,
-                                          40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-                                          41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41,
-                                          42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
-                                          42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42 };
-        const BYTE ML_deltaCode = 36;
-        const U16* const mlTable = seqStorePtr->matchLengthStart;
-        BYTE* const mlCodeTable = seqStorePtr->mlCodeStart;
-        size_t u;
-        for (u=0; u<nbSeq; u++) {
-            U32 const ml = mlTable[u];
-            mlCodeTable[u] = (ml>127) ? (BYTE)ZSTD_highbit32(ml) + ML_deltaCode : ML_Code[ml];
-        }
-        if (seqStorePtr->longLengthID==2)
-            mlCodeTable[seqStorePtr->longLengthPos] = MaxML;
+    BYTE const LL_deltaCode = 19;
+    BYTE const ML_deltaCode = 36;
+    const seqDef* const sequences = seqStorePtr->sequencesStart;
+    BYTE* const llCodeTable = seqStorePtr->llCode;
+    BYTE* const ofCodeTable = seqStorePtr->ofCode;
+    BYTE* const mlCodeTable = seqStorePtr->mlCode;
+    U32 const nbSeq = (U32)(seqStorePtr->sequences - seqStorePtr->sequencesStart);
+    U32 u;
+    for (u=0; u<nbSeq; u++) {
+        U32 const llv = sequences[u].litLength;
+        U32 const mlv = sequences[u].matchLength;
+        llCodeTable[u] = (llv> 63) ? (BYTE)ZSTD_highbit32(llv) + LL_deltaCode : LL_Code[llv];
+        ofCodeTable[u] = (BYTE)ZSTD_highbit32(sequences[u].offset);
+        mlCodeTable[u] = (mlv>127) ? (BYTE)ZSTD_highbit32(mlv) + ML_deltaCode : ML_Code[mlv];
     }
+    if (seqStorePtr->longLengthID==1)
+        llCodeTable[seqStorePtr->longLengthPos] = MaxLL;
+    if (seqStorePtr->longLengthID==2)
+        mlCodeTable[seqStorePtr->longLengthPos] = MaxML;
 }
 
 
@@ -756,17 +576,14 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
     FSE_CTable* CTable_OffsetBits = zc->offcodeCTable;
     FSE_CTable* CTable_MatchLength = zc->matchlengthCTable;
     U32 LLtype, Offtype, MLtype;   /* compressed, raw or rle */
-    U16*  const llTable = seqStorePtr->litLengthStart;
-    U16*  const mlTable = seqStorePtr->matchLengthStart;
-    const U32*  const offsetTable = seqStorePtr->offsetStart;
-    const U32*  const offsetTableEnd = seqStorePtr->offset;
-    BYTE* const ofCodeTable = seqStorePtr->offCodeStart;
-    BYTE* const llCodeTable = seqStorePtr->llCodeStart;
-    BYTE* const mlCodeTable = seqStorePtr->mlCodeStart;
+    const seqDef* const sequences = seqStorePtr->sequencesStart;
+    const BYTE* const ofCodeTable = seqStorePtr->ofCode;
+    const BYTE* const llCodeTable = seqStorePtr->llCode;
+    const BYTE* const mlCodeTable = seqStorePtr->mlCode;
     BYTE* const ostart = (BYTE*)dst;
     BYTE* const oend = ostart + dstCapacity;
     BYTE* op = ostart;
-    size_t const nbSeq = offsetTableEnd - offsetTable;
+    size_t const nbSeq = seqStorePtr->sequences - seqStorePtr->sequencesStart;
     BYTE* seqHead;
 
     /* Compress literals */
@@ -791,7 +608,7 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
 #define MAX_SEQ_FOR_STATIC_FSE  1000
 
     /* convert length/distances into codes */
-    ZSTD_seqToCodes(seqStorePtr, nbSeq);
+    ZSTD_seqToCodes(seqStorePtr);
 
     /* CTable for Literal Lengths */
     {   U32 max = MaxLL;
@@ -799,12 +616,12 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
         if ((mostFrequent == nbSeq) && (nbSeq > 2)) {
             *op++ = llCodeTable[0];
             FSE_buildCTable_rle(CTable_LitLength, (BYTE)max);
-            LLtype = FSE_ENCODING_RLE;
+            LLtype = set_rle;
         } else if ((zc->flagStaticTables) && (nbSeq < MAX_SEQ_FOR_STATIC_FSE)) {
-            LLtype = FSE_ENCODING_STATIC;
+            LLtype = set_repeat;
         } else if ((nbSeq < MIN_SEQ_FOR_DYNAMIC_FSE) || (mostFrequent < (nbSeq >> (LL_defaultNormLog-1)))) {
             FSE_buildCTable(CTable_LitLength, LL_defaultNorm, MaxLL, LL_defaultNormLog);
-            LLtype = FSE_ENCODING_RAW;
+            LLtype = set_basic;
         } else {
             size_t nbSeq_1 = nbSeq;
             const U32 tableLog = FSE_optimalTableLog(LLFSELog, nbSeq, max);
@@ -814,7 +631,7 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
               if (FSE_isError(NCountSize)) return ERROR(GENERIC);
               op += NCountSize; }
             FSE_buildCTable(CTable_LitLength, norm, max, tableLog);
-            LLtype = FSE_ENCODING_DYNAMIC;
+            LLtype = set_compressed;
     }   }
 
     /* CTable for Offsets */
@@ -823,12 +640,12 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
         if ((mostFrequent == nbSeq) && (nbSeq > 2)) {
             *op++ = ofCodeTable[0];
             FSE_buildCTable_rle(CTable_OffsetBits, (BYTE)max);
-            Offtype = FSE_ENCODING_RLE;
+            Offtype = set_rle;
         } else if ((zc->flagStaticTables) && (nbSeq < MAX_SEQ_FOR_STATIC_FSE)) {
-            Offtype = FSE_ENCODING_STATIC;
+            Offtype = set_repeat;
         } else if ((nbSeq < MIN_SEQ_FOR_DYNAMIC_FSE) || (mostFrequent < (nbSeq >> (OF_defaultNormLog-1)))) {
             FSE_buildCTable(CTable_OffsetBits, OF_defaultNorm, MaxOff, OF_defaultNormLog);
-            Offtype = FSE_ENCODING_RAW;
+            Offtype = set_basic;
         } else {
             size_t nbSeq_1 = nbSeq;
             const U32 tableLog = FSE_optimalTableLog(OffFSELog, nbSeq, max);
@@ -838,7 +655,7 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
               if (FSE_isError(NCountSize)) return ERROR(GENERIC);
               op += NCountSize; }
             FSE_buildCTable(CTable_OffsetBits, norm, max, tableLog);
-            Offtype = FSE_ENCODING_DYNAMIC;
+            Offtype = set_compressed;
     }   }
 
     /* CTable for MatchLengths */
@@ -847,12 +664,12 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
         if ((mostFrequent == nbSeq) && (nbSeq > 2)) {
             *op++ = *mlCodeTable;
             FSE_buildCTable_rle(CTable_MatchLength, (BYTE)max);
-            MLtype = FSE_ENCODING_RLE;
+            MLtype = set_rle;
         } else if ((zc->flagStaticTables) && (nbSeq < MAX_SEQ_FOR_STATIC_FSE)) {
-            MLtype = FSE_ENCODING_STATIC;
+            MLtype = set_repeat;
         } else if ((nbSeq < MIN_SEQ_FOR_DYNAMIC_FSE) || (mostFrequent < (nbSeq >> (ML_defaultNormLog-1)))) {
             FSE_buildCTable(CTable_MatchLength, ML_defaultNorm, MaxML, ML_defaultNormLog);
-            MLtype = FSE_ENCODING_RAW;
+            MLtype = set_basic;
         } else {
             size_t nbSeq_1 = nbSeq;
             const U32 tableLog = FSE_optimalTableLog(MLFSELog, nbSeq, max);
@@ -862,7 +679,7 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
               if (FSE_isError(NCountSize)) return ERROR(GENERIC);
               op += NCountSize; }
             FSE_buildCTable(CTable_MatchLength, norm, max, tableLog);
-            MLtype = FSE_ENCODING_DYNAMIC;
+            MLtype = set_compressed;
     }   }
 
     *seqHead = (BYTE)((LLtype<<6) + (Offtype<<4) + (MLtype<<2));
@@ -881,21 +698,21 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
         FSE_initCState2(&stateMatchLength, CTable_MatchLength, mlCodeTable[nbSeq-1]);
         FSE_initCState2(&stateOffsetBits,  CTable_OffsetBits,  ofCodeTable[nbSeq-1]);
         FSE_initCState2(&stateLitLength,   CTable_LitLength,   llCodeTable[nbSeq-1]);
-        BIT_addBits(&blockStream, llTable[nbSeq-1], LL_bits[llCodeTable[nbSeq-1]]);
+        BIT_addBits(&blockStream, sequences[nbSeq-1].litLength, LL_bits[llCodeTable[nbSeq-1]]);
         if (MEM_32bits()) BIT_flushBits(&blockStream);
-        BIT_addBits(&blockStream, mlTable[nbSeq-1], ML_bits[mlCodeTable[nbSeq-1]]);
+        BIT_addBits(&blockStream, sequences[nbSeq-1].matchLength, ML_bits[mlCodeTable[nbSeq-1]]);
         if (MEM_32bits()) BIT_flushBits(&blockStream);
-        BIT_addBits(&blockStream, offsetTable[nbSeq-1], ofCodeTable[nbSeq-1]);
+        BIT_addBits(&blockStream, sequences[nbSeq-1].offset, ofCodeTable[nbSeq-1]);
         BIT_flushBits(&blockStream);
 
         {   size_t n;
             for (n=nbSeq-2 ; n<nbSeq ; n--) {      /* intentional underflow */
-                const BYTE ofCode = ofCodeTable[n];
-                const BYTE mlCode = mlCodeTable[n];
-                const BYTE llCode = llCodeTable[n];
-                const U32  llBits = LL_bits[llCode];
-                const U32  mlBits = ML_bits[mlCode];
-                const U32  ofBits = ofCode;                                     /* 32b*/  /* 64b*/
+                BYTE const llCode = llCodeTable[n];
+                BYTE const ofCode = ofCodeTable[n];
+                BYTE const mlCode = mlCodeTable[n];
+                U32  const llBits = LL_bits[llCode];
+                U32  const ofBits = ofCode;                                     /* 32b*/  /* 64b*/
+                U32  const mlBits = ML_bits[mlCode];
                                                                                 /* (7)*/  /* (7)*/
                 FSE_encodeSymbol(&blockStream, &stateOffsetBits, ofCode);       /* 15 */  /* 15 */
                 FSE_encodeSymbol(&blockStream, &stateMatchLength, mlCode);      /* 24 */  /* 24 */
@@ -903,11 +720,11 @@ size_t ZSTD_compressSequences(ZSTD_CCtx* zc,
                 FSE_encodeSymbol(&blockStream, &stateLitLength, llCode);        /* 16 */  /* 33 */
                 if (MEM_32bits() || (ofBits+mlBits+llBits >= 64-7-(LLFSELog+MLFSELog+OffFSELog)))
                     BIT_flushBits(&blockStream);                                /* (7)*/
-                BIT_addBits(&blockStream, llTable[n], llBits);
+                BIT_addBits(&blockStream, sequences[n].litLength, llBits);
                 if (MEM_32bits() && ((llBits+mlBits)>24)) BIT_flushBits(&blockStream);
-                BIT_addBits(&blockStream, mlTable[n], mlBits);
+                BIT_addBits(&blockStream, sequences[n].matchLength, mlBits);
                 if (MEM_32bits()) BIT_flushBits(&blockStream);                  /* (7)*/
-                BIT_addBits(&blockStream, offsetTable[n], ofBits);              /* 31 */
+                BIT_addBits(&blockStream, sequences[n].offset, ofBits);         /* 31 */
                 BIT_flushBits(&blockStream);                                    /* (7)*/
         }   }
 
@@ -955,15 +772,17 @@ MEM_STATIC void ZSTD_storeSeq(seqStore_t* seqStorePtr, size_t litLength, const v
     seqStorePtr->lit += litLength;
 
     /* literal Length */
-    if (litLength>0xFFFF) { seqStorePtr->longLengthID = 1; seqStorePtr->longLengthPos = (U32)(seqStorePtr->litLength - seqStorePtr->litLengthStart); }
-    *seqStorePtr->litLength++ = (U16)litLength;
+    if (litLength>0xFFFF) { seqStorePtr->longLengthID = 1; seqStorePtr->longLengthPos = (U32)(seqStorePtr->sequences - seqStorePtr->sequencesStart); }
+    seqStorePtr->sequences[0].litLength = (U16)litLength;
 
     /* match offset */
-    *(seqStorePtr->offset++) = offsetCode + 1;
+    seqStorePtr->sequences[0].offset = offsetCode + 1;
 
     /* match Length */
-    if (matchCode>0xFFFF) { seqStorePtr->longLengthID = 2; seqStorePtr->longLengthPos = (U32)(seqStorePtr->matchLength - seqStorePtr->matchLengthStart); }
-    *seqStorePtr->matchLength++ = (U16)matchCode;
+    if (matchCode>0xFFFF) { seqStorePtr->longLengthID = 2; seqStorePtr->longLengthPos = (U32)(seqStorePtr->sequences - seqStorePtr->sequencesStart); }
+    seqStorePtr->sequences[0].matchLength = (U16)matchCode;
+
+    seqStorePtr->sequences++;
 }
 
 
@@ -1053,10 +872,9 @@ static size_t ZSTD_count(const BYTE* pIn, const BYTE* pMatch, const BYTE* const
 static size_t ZSTD_count_2segments(const BYTE* ip, const BYTE* match, const BYTE* iEnd, const BYTE* mEnd, const BYTE* iStart)
 {
     const BYTE* const vEnd = MIN( ip + (mEnd - match), iEnd);
-    size_t matchLength = ZSTD_count(ip, match, vEnd);
-    if (match + matchLength == mEnd)
-        matchLength += ZSTD_count(ip+matchLength, iStart, iEnd);
-    return matchLength;
+    size_t const matchLength = ZSTD_count(ip, match, vEnd);
+    if (match + matchLength != mEnd) return matchLength;
+    return matchLength + ZSTD_count(ip+matchLength, iStart, iEnd);
 }
 
 
@@ -1083,7 +901,6 @@ static const U64 prime7bytes = 58295818150454627ULL;
 static size_t ZSTD_hash7(U64 u, U32 h) { return (size_t)(((u  << (64-56)) * prime7bytes) >> (64-h)) ; }
 static size_t ZSTD_hash7Ptr(const void* p, U32 h) { return ZSTD_hash7(MEM_readLE64(p), h); }
 
-//static const U64 prime8bytes = 58295818150454627ULL;
 static const U64 prime8bytes = 0xCF1BBCDCB7A56463ULL;
 static size_t ZSTD_hash8(U64 u, U32 h) { return (size_t)(((u) * prime8bytes) >> (64-h)) ; }
 static size_t ZSTD_hash8Ptr(const void* p, U32 h) { return ZSTD_hash8(MEM_readLE64(p), h); }
@@ -1108,10 +925,10 @@ static size_t ZSTD_hashPtr(const void* p, U32 hBits, U32 mls)
 static void ZSTD_fillHashTable (ZSTD_CCtx* zc, const void* end, const U32 mls)
 {
     U32* const hashTable = zc->hashTable;
-    const U32 hBits = zc->params.cParams.hashLog;
+    U32  const hBits = zc->params.cParams.hashLog;
     const BYTE* const base = zc->base;
     const BYTE* ip = base + zc->nextToUpdate;
-    const BYTE* const iend = ((const BYTE*)end) - 8;
+    const BYTE* const iend = ((const BYTE*)end) - HASH_READ_SIZE;
     const size_t fastHashFillStep = 3;
 
     while(ip <= iend) {
@@ -1127,16 +944,16 @@ void ZSTD_compressBlock_fast_generic(ZSTD_CCtx* cctx,
                                  const U32 mls)
 {
     U32* const hashTable = cctx->hashTable;
-    const U32 hBits = cctx->params.cParams.hashLog;
+    U32  const hBits = cctx->params.cParams.hashLog;
     seqStore_t* seqStorePtr = &(cctx->seqStore);
     const BYTE* const base = cctx->base;
     const BYTE* const istart = (const BYTE*)src;
     const BYTE* ip = istart;
     const BYTE* anchor = istart;
-    const U32 lowestIndex = cctx->dictLimit;
+    const U32   lowestIndex = cctx->dictLimit;
     const BYTE* const lowest = base + lowestIndex;
     const BYTE* const iend = istart + srcSize;
-    const BYTE* const ilimit = iend - 8;
+    const BYTE* const ilimit = iend - HASH_READ_SIZE;
     U32 offset_1=cctx->rep[0], offset_2=cctx->rep[1];
     U32 offsetSaved = 0;
 
@@ -1326,7 +1143,7 @@ static void ZSTD_compressBlock_fast_extDict_generic(ZSTD_CCtx* ctx,
 static void ZSTD_compressBlock_fast_extDict(ZSTD_CCtx* ctx,
                          const void* src, size_t srcSize)
 {
-    const U32 mls = ctx->params.cParams.searchLength;
+    U32 const mls = ctx->params.cParams.searchLength;
     switch(mls)
     {
     default:
@@ -1348,12 +1165,12 @@ static void ZSTD_compressBlock_fast_extDict(ZSTD_CCtx* ctx,
 static void ZSTD_fillDoubleHashTable (ZSTD_CCtx* cctx, const void* end, const U32 mls)
 {
     U32* const hashLarge = cctx->hashTable;
-    const U32 hBitsL = cctx->params.cParams.hashLog;
+    U32  const hBitsL = cctx->params.cParams.hashLog;
     U32* const hashSmall = cctx->chainTable;
-    const U32 hBitsS = cctx->params.cParams.chainLog;
+    U32  const hBitsS = cctx->params.cParams.chainLog;
     const BYTE* const base = cctx->base;
     const BYTE* ip = base + cctx->nextToUpdate;
-    const BYTE* const iend = ((const BYTE*)end) - 8;
+    const BYTE* const iend = ((const BYTE*)end) - HASH_READ_SIZE;
     const size_t fastHashFillStep = 3;
 
     while(ip <= iend) {
@@ -1381,7 +1198,7 @@ void ZSTD_compressBlock_doubleFast_generic(ZSTD_CCtx* cctx,
     const U32 lowestIndex = cctx->dictLimit;
     const BYTE* const lowest = base + lowestIndex;
     const BYTE* const iend = istart + srcSize;
-    const BYTE* const ilimit = iend - 8;
+    const BYTE* const ilimit = iend - HASH_READ_SIZE;
     U32 offset_1=cctx->rep[0], offset_2=cctx->rep[1];
     U32 offsetSaved = 0;
 
@@ -1490,9 +1307,9 @@ static void ZSTD_compressBlock_doubleFast_extDict_generic(ZSTD_CCtx* ctx,
                                  const U32 mls)
 {
     U32* const hashLong = ctx->hashTable;
-    const U32 hBitsL = ctx->params.cParams.hashLog;
+    U32  const hBitsL = ctx->params.cParams.hashLog;
     U32* const hashSmall = ctx->chainTable;
-    const U32 hBitsS = ctx->params.cParams.chainLog;
+    U32  const hBitsS = ctx->params.cParams.chainLog;
     seqStore_t* seqStorePtr = &(ctx->seqStore);
     const BYTE* const base = ctx->base;
     const BYTE* const dictBase = ctx->dictBase;
@@ -1603,7 +1420,7 @@ static void ZSTD_compressBlock_doubleFast_extDict_generic(ZSTD_CCtx* ctx,
 static void ZSTD_compressBlock_doubleFast_extDict(ZSTD_CCtx* ctx,
                          const void* src, size_t srcSize)
 {
-    const U32 mls = ctx->params.cParams.searchLength;
+    U32 const mls = ctx->params.cParams.searchLength;
     switch(mls)
     {
     default:
@@ -1628,13 +1445,13 @@ static void ZSTD_compressBlock_doubleFast_extDict(ZSTD_CCtx* ctx,
 static U32 ZSTD_insertBt1(ZSTD_CCtx* zc, const BYTE* const ip, const U32 mls, const BYTE* const iend, U32 nbCompares,
                           U32 extDict)
 {
-    U32* const hashTable = zc->hashTable;
-    const U32 hashLog = zc->params.cParams.hashLog;
-    const size_t h  = ZSTD_hashPtr(ip, hashLog, mls);
-    U32* const bt   = zc->chainTable;
-    const U32 btLog = zc->params.cParams.chainLog - 1;
-    const U32 btMask= (1 << btLog) - 1;
-    U32 matchIndex  = hashTable[h];
+    U32*   const hashTable = zc->hashTable;
+    U32    const hashLog = zc->params.cParams.hashLog;
+    size_t const h  = ZSTD_hashPtr(ip, hashLog, mls);
+    U32*   const bt = zc->chainTable;
+    U32    const btLog  = zc->params.cParams.chainLog - 1;
+    U32    const btMask = (1 << btLog) - 1;
+    U32 matchIndex = hashTable[h];
     size_t commonLengthSmaller=0, commonLengthLarger=0;
     const BYTE* const base = zc->base;
     const BYTE* const dictBase = zc->dictBase;
@@ -1647,7 +1464,7 @@ static U32 ZSTD_insertBt1(ZSTD_CCtx* zc, const BYTE* const ip, const U32 mls, co
     U32* smallerPtr = bt + 2*(current&btMask);
     U32* largerPtr  = smallerPtr + 1;
     U32 dummy32;   /* to be nullified at the end */
-    const U32 windowLow = zc->lowLimit;
+    U32 const windowLow = zc->lowLimit;
     U32 matchEndIdx = current+8;
     size_t bestLength = 8;
 #ifdef ZSTD_C_PREDICT
@@ -1732,12 +1549,12 @@ static size_t ZSTD_insertBtAndFindBestMatch (
                         U32 nbCompares, const U32 mls,
                         U32 extDict)
 {
-    U32* const hashTable = zc->hashTable;
-    const U32 hashLog = zc->params.cParams.hashLog;
-    const size_t h  = ZSTD_hashPtr(ip, hashLog, mls);
-    U32* const bt   = zc->chainTable;
-    const U32 btLog = zc->params.cParams.chainLog - 1;
-    const U32 btMask= (1 << btLog) - 1;
+    U32*   const hashTable = zc->hashTable;
+    U32    const hashLog = zc->params.cParams.hashLog;
+    size_t const h  = ZSTD_hashPtr(ip, hashLog, mls);
+    U32*   const bt = zc->chainTable;
+    U32    const btLog  = zc->params.cParams.chainLog - 1;
+    U32    const btMask = (1 << btLog) - 1;
     U32 matchIndex  = hashTable[h];
     size_t commonLengthSmaller=0, commonLengthLarger=0;
     const BYTE* const base = zc->base;
@@ -1883,13 +1700,11 @@ static size_t ZSTD_BtFindBestMatch_selectMLS_extDict (
 
 
 
-/* ***********************
+/* *********************************
 *  Hash Chain
-*************************/
-
+***********************************/
 #define NEXT_IN_CHAIN(d, mask)   chainTable[(d) & mask]
 
-
 /* Update chains up to ip (excluded)
    Assumption : always within prefix (ie. not within extDict) */
 FORCE_INLINE
@@ -2397,18 +2212,24 @@ static size_t ZSTD_compressBlock_internal(ZSTD_CCtx* zc, void* dst, size_t dstCa
 }
 
 
-
-
+/*! ZSTD_compress_generic() :
+*   Compress a chunk of data into one or multiple blocks.
+*   All blocks will be terminated, all input will be consumed.
+*   Function will issue an error if there is not enough `dstCapacity` to hold the compressed content.
+*   Frame is supposed already started (header already produced)
+*   @return : compressed size, or an error code
+*/
 static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
                                      void* dst, size_t dstCapacity,
-                               const void* src, size_t srcSize)
+                               const void* src, size_t srcSize,
+                                     U32 lastFrameChunk)
 {
     size_t blockSize = cctx->blockSize;
     size_t remaining = srcSize;
     const BYTE* ip = (const BYTE*)src;
     BYTE* const ostart = (BYTE*)dst;
     BYTE* op = ostart;
-    const U32 maxDist = 1 << cctx->params.cParams.windowLog;
+    U32 const maxDist = 1 << cctx->params.cParams.windowLog;
     ZSTD_stats_t* stats = &cctx->seqStore.stats;
     ZSTD_statsInit(stats);   /* debug only */
 
@@ -2416,6 +2237,7 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
         XXH64_update(&cctx->xxhState, src, srcSize);
 
     while (remaining) {
+        U32 const lastBlock = lastFrameChunk & (blockSize >= remaining);
         size_t cSize;
         ZSTD_statsResetFreqs(stats);   /* debug only */
 
@@ -2433,14 +2255,15 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
         if (ZSTD_isError(cSize)) return cSize;
 
         if (cSize == 0) {  /* block is not compressible */
-            cSize = ZSTD_noCompressBlock(op, dstCapacity, ip, blockSize);
-            if (ZSTD_isError(cSize)) return cSize;
+            U32 const cBlockHeader24 = lastBlock + (((U32)bt_raw)<<1) + (U32)(blockSize << 3);
+            if (blockSize + ZSTD_blockHeaderSize > dstCapacity) return ERROR(dstSize_tooSmall);
+            MEM_writeLE32(op, cBlockHeader24);   /* no pb, 4th byte will be overwritten */
+            memcpy(op + ZSTD_blockHeaderSize, ip, blockSize);
+            cSize = ZSTD_blockHeaderSize+blockSize;
         } else {
-            op[0] = (BYTE)(cSize>>16);
-            op[1] = (BYTE)(cSize>>8);
-            op[2] = (BYTE)cSize;
-            op[0] += (BYTE)(bt_compressed << 6); /* is a compressed block */
-            cSize += 3;
+            U32 const cBlockHeader24 = lastBlock + (((U32)bt_compressed)<<1) + (U32)(cSize << 3);
+            MEM_writeLE24(op, cBlockHeader24);
+            cSize += ZSTD_blockHeaderSize;
         }
 
         remaining -= blockSize;
@@ -2449,7 +2272,8 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
         op += cSize;
     }
 
-    ZSTD_statsPrint(stats, cctx->params.cParams.searchLength);
+    if (lastFrameChunk && (op>ostart)) cctx->stage = ZSTDcs_ending;
+    ZSTD_statsPrint(stats, cctx->params.cParams.searchLength);   /* debug only */
     return op-ostart;
 }
 
@@ -2457,34 +2281,34 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
 static size_t ZSTD_writeFrameHeader(void* dst, size_t dstCapacity,
                                     ZSTD_parameters params, U64 pledgedSrcSize, U32 dictID)
 {   BYTE* const op = (BYTE*)dst;
-    U32 const dictIDSizeCode = (dictID>0) + (dictID>=256) + (dictID>=65536);   /* 0-3 */
-    U32 const checksumFlag = params.fParams.checksumFlag>0;
-    U32 const windowSize = 1U << params.cParams.windowLog;
-    U32 const directModeFlag = params.fParams.contentSizeFlag && (windowSize > (pledgedSrcSize-1));
-    BYTE const windowLogByte = (BYTE)((params.cParams.windowLog - ZSTD_WINDOWLOG_ABSOLUTEMIN) << 3);
-    U32 const fcsCode = params.fParams.contentSizeFlag ?
+    U32   const dictIDSizeCode = (dictID>0) + (dictID>=256) + (dictID>=65536);   /* 0-3 */
+    U32   const checksumFlag = params.fParams.checksumFlag>0;
+    U32   const windowSize = 1U << params.cParams.windowLog;
+    U32   const singleSegment = params.fParams.contentSizeFlag && (windowSize > (pledgedSrcSize-1));
+    BYTE  const windowLogByte = (BYTE)((params.cParams.windowLog - ZSTD_WINDOWLOG_ABSOLUTEMIN) << 3);
+    U32   const fcsCode = params.fParams.contentSizeFlag ?
                      (pledgedSrcSize>=256) + (pledgedSrcSize>=65536+256) + (pledgedSrcSize>=0xFFFFFFFFU) :   /* 0-3 */
                       0;
-    BYTE const frameHeaderDecriptionByte = (BYTE)(dictIDSizeCode + (checksumFlag<<2) + (directModeFlag<<5) + (fcsCode<<6) );
+    BYTE  const frameHeaderDecriptionByte = (BYTE)(dictIDSizeCode + (checksumFlag<<2) + (singleSegment<<5) + (fcsCode<<6) );
     size_t pos;
 
     if (dstCapacity < ZSTD_frameHeaderSize_max) return ERROR(dstSize_tooSmall);
 
     MEM_writeLE32(dst, ZSTD_MAGICNUMBER);
     op[4] = frameHeaderDecriptionByte; pos=5;
-    if (!directModeFlag) op[pos++] = windowLogByte;
+    if (!singleSegment) op[pos++] = windowLogByte;
     switch(dictIDSizeCode)
     {
         default:   /* impossible */
         case 0 : break;
         case 1 : op[pos] = (BYTE)(dictID); pos++; break;
-        case 2 : MEM_writeLE16(op+pos, (U16)(dictID)); pos+=2; break;
+        case 2 : MEM_writeLE16(op+pos, (U16)dictID); pos+=2; break;
         case 3 : MEM_writeLE32(op+pos, dictID); pos+=4; break;
     }
     switch(fcsCode)
     {
         default:   /* impossible */
-        case 0 : if (directModeFlag) op[pos++] = (BYTE)(pledgedSrcSize); break;
+        case 0 : if (singleSegment) op[pos++] = (BYTE)(pledgedSrcSize); break;
         case 1 : MEM_writeLE16(op+pos, (U16)(pledgedSrcSize-256)); pos+=2; break;
         case 2 : MEM_writeLE32(op+pos, (U32)(pledgedSrcSize)); pos+=4; break;
         case 3 : MEM_writeLE64(op+pos, (U64)(pledgedSrcSize)); pos+=8; break;
@@ -2496,30 +2320,31 @@ static size_t ZSTD_writeFrameHeader(void* dst, size_t dstCapacity,
 static size_t ZSTD_compressContinue_internal (ZSTD_CCtx* zc,
                               void* dst, size_t dstCapacity,
                         const void* src, size_t srcSize,
-                               U32 frame)
+                               U32 frame, U32 lastFrameChunk)
 {
     const BYTE* const ip = (const BYTE*) src;
     size_t fhSize = 0;
 
-    if (zc->stage==0) return ERROR(stage_wrong);
-    if (frame && (zc->stage==1)) {   /* copy saved header */
+    if (zc->stage==ZSTDcs_created) return ERROR(stage_wrong);   /* missing init (ZSTD_compressBegin) */
+
+    if (frame && (zc->stage==ZSTDcs_init)) {
         fhSize = ZSTD_writeFrameHeader(dst, dstCapacity, zc->params, zc->frameContentSize, zc->dictID);
         if (ZSTD_isError(fhSize)) return fhSize;
         dstCapacity -= fhSize;
         dst = (char*)dst + fhSize;
-        zc->stage = 2;
+        zc->stage = ZSTDcs_ongoing;
     }
 
     /* Check if blocks follow each other */
     if (src != zc->nextSrc) {
         /* not contiguous */
-        size_t const delta = zc->nextSrc - ip;
+        ptrdiff_t const delta = zc->nextSrc - ip;
         zc->lowLimit = zc->dictLimit;
         zc->dictLimit = (U32)(zc->nextSrc - zc->base);
         zc->dictBase = zc->base;
         zc->base -= delta;
         zc->nextToUpdate = zc->dictLimit;
-        if (zc->dictLimit - zc->lowLimit < 8) zc->lowLimit = zc->dictLimit;   /* too small extDict */
+        if (zc->dictLimit - zc->lowLimit < HASH_READ_SIZE) zc->lowLimit = zc->dictLimit;   /* too small extDict */
     }
 
     /* preemptive overflow correction */
@@ -2545,7 +2370,7 @@ static size_t ZSTD_compressContinue_internal (ZSTD_CCtx* zc,
 
     zc->nextSrc = ip + srcSize;
     {   size_t const cSize = frame ?
-                             ZSTD_compress_generic (zc, dst, dstCapacity, src, srcSize) :
+                             ZSTD_compress_generic (zc, dst, dstCapacity, src, srcSize, lastFrameChunk) :
                              ZSTD_compressBlock_internal (zc, dst, dstCapacity, src, srcSize);
         if (ZSTD_isError(cSize)) return cSize;
         return cSize + fhSize;
@@ -2553,19 +2378,25 @@ static size_t ZSTD_compressContinue_internal (ZSTD_CCtx* zc,
 }
 
 
-size_t ZSTD_compressContinue (ZSTD_CCtx* zc,
+size_t ZSTD_compressContinue (ZSTD_CCtx* cctx,
                               void* dst, size_t dstCapacity,
                         const void* src, size_t srcSize)
 {
-    return ZSTD_compressContinue_internal(zc, dst, dstCapacity, src, srcSize, 1);
+    return ZSTD_compressContinue_internal(cctx, dst, dstCapacity, src, srcSize, 1, 0);
 }
 
 
-size_t ZSTD_compressBlock(ZSTD_CCtx* zc, void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+size_t ZSTD_getBlockSizeMax(ZSTD_CCtx* cctx)
 {
-    if (srcSize > ZSTD_BLOCKSIZE_MAX) return ERROR(srcSize_wrong);
-    ZSTD_LOG_BLOCK("%p: ZSTD_compressBlock searchLength=%d\n", zc->base, zc->params.cParams.searchLength);
-    return ZSTD_compressContinue_internal(zc, dst, dstCapacity, src, srcSize, 0);
+    return MIN (ZSTD_BLOCKSIZE_ABSOLUTEMAX, 1 << cctx->params.cParams.windowLog);
+}
+
+size_t ZSTD_compressBlock(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+{
+    size_t const blockSizeMax = ZSTD_getBlockSizeMax(cctx);
+    if (srcSize > blockSizeMax) return ERROR(srcSize_wrong);
+    ZSTD_LOG_BLOCK("%p: ZSTD_compressBlock searchLength=%d\n", cctx->base, cctx->params.cParams.searchLength);
+    return ZSTD_compressContinue_internal(cctx, dst, dstCapacity, src, srcSize, 0, 0);
 }
 
 
@@ -2583,7 +2414,7 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_CCtx* zc, const void* src, size_t
     zc->loadedDictEnd = (U32)(iend - zc->base);
 
     zc->nextSrc = iend;
-    if (srcSize <= 8) return 0;
+    if (srcSize <= HASH_READ_SIZE) return 0;
 
     switch(zc->params.cParams.strategy)
     {
@@ -2598,12 +2429,12 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_CCtx* zc, const void* src, size_t
     case ZSTD_greedy:
     case ZSTD_lazy:
     case ZSTD_lazy2:
-        ZSTD_insertAndFindFirstIndex (zc, iend-8, zc->params.cParams.searchLength);
+        ZSTD_insertAndFindFirstIndex (zc, iend-HASH_READ_SIZE, zc->params.cParams.searchLength);
         break;
 
     case ZSTD_btlazy2:
     case ZSTD_btopt:
-        ZSTD_updateTree(zc, iend-8, iend, 1 << zc->params.cParams.searchLog, zc->params.cParams.searchLength);
+        ZSTD_updateTree(zc, iend-HASH_READ_SIZE, iend, 1 << zc->params.cParams.searchLog, zc->params.cParams.searchLength);
         break;
 
     default:
@@ -2618,8 +2449,8 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_CCtx* zc, const void* src, size_t
 /* Dictionary format :
      Magic == ZSTD_DICT_MAGIC (4 bytes)
      HUF_writeCTable(256)
-     FSE_writeNCount(ml)
      FSE_writeNCount(off)
+     FSE_writeNCount(ml)
      FSE_writeNCount(ll)
      RepOffsets
      Dictionary content
@@ -2734,38 +2565,57 @@ size_t ZSTD_compressBegin(ZSTD_CCtx* zc, int compressionLevel)
 }
 
 
-/*! ZSTD_compressEnd() :
-*   Write frame epilogue.
+/*! ZSTD_writeEpilogue() :
+*   Ends a frame.
 *   @return : nb of bytes written into dst (or an error code) */
-size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity)
+static size_t ZSTD_writeEpilogue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity)
 {
-    BYTE* op = (BYTE*)dst;
+    BYTE* const ostart = (BYTE*)dst;
+    BYTE* op = ostart;
     size_t fhSize = 0;
 
-    /* not even init ! */
-    if (cctx->stage==0) return ERROR(stage_wrong);
+    if (cctx->stage == ZSTDcs_created) return ERROR(stage_wrong);  /*< not even init ! */
 
     /* special case : empty frame */
-    if (cctx->stage==1) {
+    if (cctx->stage == ZSTDcs_init) {
         fhSize = ZSTD_writeFrameHeader(dst, dstCapacity, cctx->params, 0, 0);
         if (ZSTD_isError(fhSize)) return fhSize;
         dstCapacity -= fhSize;
         op += fhSize;
-        cctx->stage = 2;
+        cctx->stage = ZSTDcs_ongoing;
     }
 
-    /* frame epilogue */
-    if (dstCapacity < 3) return ERROR(dstSize_tooSmall);
-    {   U32 const checksum = cctx->params.fParams.checksumFlag ?
-                             (U32)((XXH64_digest(&cctx->xxhState) >> 11) & ((1<<22)-1)) :
-                             0;
-        op[0] = (BYTE)((bt_end<<6) + (checksum>>16));
-        op[1] = (BYTE)(checksum>>8);
-        op[2] = (BYTE)checksum;
+    if (cctx->stage != ZSTDcs_ending) {
+        /* write one last empty block, make it the "last" block */
+        U32 const cBlockHeader24 = 1 /* last block */ + (((U32)bt_raw)<<1) + 0;
+        if (dstCapacity<4) return ERROR(dstSize_tooSmall);
+        MEM_writeLE32(op, cBlockHeader24);
+        op += ZSTD_blockHeaderSize;
+        dstCapacity -= ZSTD_blockHeaderSize;
     }
 
-    cctx->stage = 0;  /* return to "created but not init" status */
-    return 3+fhSize;
+    if (cctx->params.fParams.checksumFlag) {
+        U32 const checksum = (U32) XXH64_digest(&cctx->xxhState);
+        if (dstCapacity<4) return ERROR(dstSize_tooSmall);
+        MEM_writeLE32(op, checksum);
+        op += 4;
+    }
+
+    cctx->stage = ZSTDcs_created;  /* return to "created but no init" status */
+    return op-ostart;
+}
+
+
+size_t ZSTD_compressEnd (ZSTD_CCtx* cctx,
+                         void* dst, size_t dstCapacity,
+                   const void* src, size_t srcSize)
+{
+    size_t endResult;
+    size_t const cSize = ZSTD_compressContinue_internal(cctx, dst, dstCapacity, src, srcSize, 1, 1);
+    if (ZSTD_isError(cSize)) return cSize;
+    endResult = ZSTD_writeEpilogue(cctx, (char*)dst + cSize, dstCapacity-cSize);
+    if (ZSTD_isError(endResult)) return endResult;
+    return cSize + endResult;
 }
 
 
@@ -2778,44 +2628,23 @@ static size_t ZSTD_compress_usingPreparedCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx*
                                        void* dst, size_t dstCapacity,
                                  const void* src, size_t srcSize)
 {
-    {   size_t const errorCode = ZSTD_copyCCtx(cctx, preparedCCtx);
-        if (ZSTD_isError(errorCode)) return errorCode;
-    }
-    {   size_t const cSize = ZSTD_compressContinue(cctx, dst, dstCapacity, src, srcSize);
-        if (ZSTD_isError(cSize)) return cSize;
+    size_t const errorCode = ZSTD_copyCCtx(cctx, preparedCCtx);
+    if (ZSTD_isError(errorCode)) return errorCode;
 
-        {   size_t const endSize = ZSTD_compressEnd(cctx, (char*)dst+cSize, dstCapacity-cSize);
-            if (ZSTD_isError(endSize)) return endSize;
-            return cSize + endSize;
-    }   }
+    return ZSTD_compressEnd(cctx, dst, dstCapacity, src, srcSize);
 }
 
 
-static size_t ZSTD_compress_internal (ZSTD_CCtx* ctx,
+static size_t ZSTD_compress_internal (ZSTD_CCtx* cctx,
                                void* dst, size_t dstCapacity,
                          const void* src, size_t srcSize,
                          const void* dict,size_t dictSize,
                                ZSTD_parameters params)
 {
-    BYTE* const ostart = (BYTE*)dst;
-    BYTE* op = ostart;
+    size_t const errorCode = ZSTD_compressBegin_internal(cctx, dict, dictSize, params, srcSize);
+    if(ZSTD_isError(errorCode)) return errorCode;
 
-    /* Init */
-    { size_t const errorCode = ZSTD_compressBegin_internal(ctx, dict, dictSize, params, srcSize);
-      if(ZSTD_isError(errorCode)) return errorCode; }
-
-    /* body (compression) */
-    { size_t const oSize = ZSTD_compressContinue (ctx, op,  dstCapacity, src, srcSize);
-      if(ZSTD_isError(oSize)) return oSize;
-      op += oSize;
-      dstCapacity -= oSize; }
-
-    /* Close frame */
-    { size_t const oSize = ZSTD_compressEnd(ctx, op, dstCapacity);
-      if(ZSTD_isError(oSize)) return oSize;
-      op += oSize; }
-
-    return (op - ostart);
+    return ZSTD_compressEnd(cctx, dst,  dstCapacity, src, srcSize);
 }
 
 size_t ZSTD_compress_advanced (ZSTD_CCtx* ctx,
@@ -2934,7 +2763,7 @@ ZSTDLIB_API size_t ZSTD_compress_usingCDict(ZSTD_CCtx* cctx,
 
 #define ZSTD_DEFAULT_CLEVEL 1
 #define ZSTD_MAX_CLEVEL     22
-unsigned ZSTD_maxCLevel(void) { return ZSTD_MAX_CLEVEL; }
+int ZSTD_maxCLevel(void) { return ZSTD_MAX_CLEVEL; }
 
 static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = {
 {   /* "default" */
@@ -2991,20 +2820,20 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
 },
 {   /* for srcSize <= 128 KB */
     /* W,  C,  H,  S,  L,  T, strat */
-    { 17, 12, 12,  1,  7,  4, ZSTD_fast    },  /* level  0 - not used */
-    { 17, 12, 13,  1,  6,  4, ZSTD_fast    },  /* level  1 */
-    { 17, 13, 16,  1,  5,  4, ZSTD_fast    },  /* level  2 */
-    { 17, 13, 14,  2,  5,  4, ZSTD_greedy  },  /* level  3 */
-    { 17, 13, 15,  3,  4,  4, ZSTD_greedy  },  /* level  4 */
-    { 17, 15, 17,  4,  4,  4, ZSTD_greedy  },  /* level  5 */
-    { 17, 16, 17,  3,  4,  4, ZSTD_lazy    },  /* level  6 */
-    { 17, 15, 17,  4,  4,  4, ZSTD_lazy2   },  /* level  7 */
-    { 17, 17, 17,  4,  4,  4, ZSTD_lazy2   },  /* level  8 */
-    { 17, 17, 17,  5,  4,  4, ZSTD_lazy2   },  /* level  9 */
-    { 17, 17, 17,  6,  4,  4, ZSTD_lazy2   },  /* level 10 */
-    { 17, 17, 17,  7,  4,  4, ZSTD_lazy2   },  /* level 11 */
-    { 17, 17, 17,  8,  4,  4, ZSTD_lazy2   },  /* level 12 */
-    { 17, 18, 17,  6,  4,  4, ZSTD_btlazy2 },  /* level 13.*/
+    { 17, 12, 12,  1,  7,  8, ZSTD_fast    },  /* level  0 - not used */
+    { 17, 12, 13,  1,  6,  8, ZSTD_fast    },  /* level  1 */
+    { 17, 13, 16,  1,  5,  8, ZSTD_fast    },  /* level  2 */
+    { 17, 16, 16,  2,  5,  8, ZSTD_dfast   },  /* level  3 */
+    { 17, 13, 15,  3,  4,  8, ZSTD_greedy  },  /* level  4 */
+    { 17, 15, 17,  4,  4,  8, ZSTD_greedy  },  /* level  5 */
+    { 17, 16, 17,  3,  4,  8, ZSTD_lazy    },  /* level  6 */
+    { 17, 15, 17,  4,  4,  8, ZSTD_lazy2   },  /* level  7 */
+    { 17, 17, 17,  4,  4,  8, ZSTD_lazy2   },  /* level  8 */
+    { 17, 17, 17,  5,  4,  8, ZSTD_lazy2   },  /* level  9 */
+    { 17, 17, 17,  6,  4,  8, ZSTD_lazy2   },  /* level 10 */
+    { 17, 17, 17,  7,  4,  8, ZSTD_lazy2   },  /* level 11 */
+    { 17, 17, 17,  8,  4,  8, ZSTD_lazy2   },  /* level 12 */
+    { 17, 18, 17,  6,  4,  8, ZSTD_btlazy2 },  /* level 13.*/
     { 17, 17, 17,  7,  3,  8, ZSTD_btopt   },  /* level 14.*/
     { 17, 17, 17,  7,  3, 16, ZSTD_btopt   },  /* level 15.*/
     { 17, 18, 17,  7,  3, 32, ZSTD_btopt   },  /* level 16.*/
@@ -3013,12 +2842,12 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
     { 17, 18, 17,  8,  3,256, ZSTD_btopt   },  /* level 19.*/
     { 17, 18, 17,  9,  3,256, ZSTD_btopt   },  /* level 20.*/
     { 17, 18, 17, 10,  3,256, ZSTD_btopt   },  /* level 21.*/
-    { 17, 18, 17, 11,  3,256, ZSTD_btopt   },  /* level 22.*/
+    { 17, 18, 17, 11,  3,512, ZSTD_btopt   },  /* level 22.*/
 },
 {   /* for srcSize <= 16 KB */
     /* W,  C,  H,  S,  L,  T, strat */
     { 14, 12, 12,  1,  7,  6, ZSTD_fast    },  /* level  0 - not used */
-    { 14, 14, 14,  1,  7,  6, ZSTD_fast    },  /* level  1 */
+    { 14, 14, 14,  1,  6,  6, ZSTD_fast    },  /* level  1 */
     { 14, 14, 14,  1,  4,  6, ZSTD_fast    },  /* level  2 */
     { 14, 14, 14,  1,  4,  6, ZSTD_dfast   },  /* level  3.*/
     { 14, 14, 14,  4,  4,  6, ZSTD_greedy  },  /* level  4.*/
diff --git a/C/zstd/zstd_decompress.c b/C/zstd/zstd_decompress.c
index a48c9abd..958d6369 100644
--- a/C/zstd/zstd_decompress.c
+++ b/C/zstd/zstd_decompress.c
@@ -105,6 +105,7 @@ static void ZSTD_copy4(void* dst, const void* src) { memcpy(dst, src, 4); }
 ***************************************************************/
 typedef enum { ZSTDds_getFrameHeaderSize, ZSTDds_decodeFrameHeader,
                ZSTDds_decodeBlockHeader, ZSTDds_decompressBlock,
+               ZSTDds_decompressLastBlock, ZSTDds_checkChecksum,
                ZSTDds_decodeSkippableHeader, ZSTDds_skipFrame } ZSTD_dStage;
 
 struct ZSTD_DCtx_s
@@ -118,9 +119,9 @@ struct ZSTD_DCtx_s
     const void* vBase;
     const void* dictEnd;
     size_t expected;
-    U32 rep[3];
+    U32 rep[ZSTD_REP_NUM];
     ZSTD_frameParams fParams;
-    blockType_t bType;   /* used in ZSTD_decompressContinue(), to transfer blockType between header decoding and block decoding stages */
+    blockType_e bType;   /* used in ZSTD_decompressContinue(), to transfer blockType between header decoding and block decoding stages */
     ZSTD_dStage stage;
     U32 litEntropy;
     U32 fseEntropy;
@@ -131,7 +132,8 @@ struct ZSTD_DCtx_s
     ZSTD_customMem customMem;
     size_t litBufSize;
     size_t litSize;
-    BYTE litBuffer[ZSTD_BLOCKSIZE_MAX + WILDCOPY_OVERLENGTH];
+    size_t rleSize;
+    BYTE litBuffer[ZSTD_BLOCKSIZE_ABSOLUTEMAX + WILDCOPY_OVERLENGTH];
     BYTE headerBuffer[ZSTD_FRAMEHEADERSIZE_MAX];
 };  /* typedef'd to ZSTD_DCtx within "zstd_static.h" */
 
@@ -186,7 +188,7 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx)
 void ZSTD_copyDCtx(ZSTD_DCtx* dstDCtx, const ZSTD_DCtx* srcDCtx)
 {
     memcpy(dstDCtx, srcDCtx,
-           sizeof(ZSTD_DCtx) - (ZSTD_BLOCKSIZE_MAX+WILDCOPY_OVERLENGTH + ZSTD_frameHeaderSize_max));  /* no need to copy workspace */
+           sizeof(ZSTD_DCtx) - (ZSTD_BLOCKSIZE_ABSOLUTEMAX+WILDCOPY_OVERLENGTH + ZSTD_frameHeaderSize_max));  /* no need to copy workspace */
 }
 
 
@@ -194,117 +196,7 @@ void ZSTD_copyDCtx(ZSTD_DCtx* dstDCtx, const ZSTD_DCtx* srcDCtx)
 *   Decompression section
 ***************************************************************/
 
-/* Frame format description
-   Frame Header -  [ Block Header - Block ] - Frame End
-   1) Frame Header
-      - 4 bytes - Magic Number : ZSTD_MAGICNUMBER (defined within zstd.h)
-      - 1 byte  - Frame Descriptor
-   2) Block Header
-      - 3 bytes, starting with a 2-bits descriptor
-                 Uncompressed, Compressed, Frame End, unused
-   3) Block
-      See Block Format Description
-   4) Frame End
-      - 3 bytes, compatible with Block Header
-*/
-
-
-/* Frame Header :
-
-   1 byte - FrameHeaderDescription :
-   bit 0-1 : dictID (0, 1, 2 or 4 bytes)
-   bit 2   : checksumFlag
-   bit 3   : reserved (must be zero)
-   bit 4   : reserved (unused, can be any value)
-   bit 5   : Single Segment (if 1, WindowLog byte is not present)
-   bit 6-7 : FrameContentFieldSize (0, 2, 4, or 8)
-             if (SkippedWindowLog && !FrameContentFieldsize) FrameContentFieldsize=1;
-
-   Optional : WindowLog (0 or 1 byte)
-   bit 0-2 : octal Fractional (1/8th)
-   bit 3-7 : Power of 2, with 0 = 1 KB (up to 2 TB)
-
-   Optional : dictID (0, 1, 2 or 4 bytes)
-   Automatic adaptation
-   0 : no dictID
-   1 : 1 - 255
-   2 : 256 - 65535
-   4 : all other values
-
-   Optional : content size (0, 1, 2, 4 or 8 bytes)
-   0 : unknown          (fcfs==0 and swl==0)
-   1 : 0-255 bytes      (fcfs==0 and swl==1)
-   2 : 256 - 65535+256  (fcfs==1)
-   4 : 0 - 4GB-1        (fcfs==2)
-   8 : 0 - 16EB-1       (fcfs==3)
-*/
-
-
-/* Compressed Block, format description
-
-   Block = Literal Section - Sequences Section
-   Prerequisite : size of (compressed) block, maximum size of regenerated data
-
-   1) Literal Section
-
-   1.1) Header : 1-5 bytes
-        flags: 2 bits
-            00 compressed by Huff0
-            01 unused
-            10 is Raw (uncompressed)
-            11 is Rle
-            Note : using 01 => Huff0 with precomputed table ?
-            Note : delta map ? => compressed ?
-
-   1.1.1) Huff0-compressed literal block : 3-5 bytes
-            srcSize < 1 KB => 3 bytes (2-2-10-10) => single stream
-            srcSize < 1 KB => 3 bytes (2-2-10-10)
-            srcSize < 16KB => 4 bytes (2-2-14-14)
-            else           => 5 bytes (2-2-18-18)
-            big endian convention
-
-   1.1.2) Raw (uncompressed) literal block header : 1-3 bytes
-        size :  5 bits: (IS_RAW<<6) + (0<<4) + size
-               12 bits: (IS_RAW<<6) + (2<<4) + (size>>8)
-                        size&255
-               20 bits: (IS_RAW<<6) + (3<<4) + (size>>16)
-                        size>>8&255
-                        size&255
-
-   1.1.3) Rle (repeated single byte) literal block header : 1-3 bytes
-        size :  5 bits: (IS_RLE<<6) + (0<<4) + size
-               12 bits: (IS_RLE<<6) + (2<<4) + (size>>8)
-                        size&255
-               20 bits: (IS_RLE<<6) + (3<<4) + (size>>16)
-                        size>>8&255
-                        size&255
-
-   1.1.4) Huff0-compressed literal block, using precomputed CTables : 3-5 bytes
-            srcSize < 1 KB => 3 bytes (2-2-10-10) => single stream
-            srcSize < 1 KB => 3 bytes (2-2-10-10)
-            srcSize < 16KB => 4 bytes (2-2-14-14)
-            else           => 5 bytes (2-2-18-18)
-            big endian convention
-
-        1- CTable available (stored into workspace ?)
-        2- Small input (fast heuristic ? Full comparison ? depend on clevel ?)
-
-
-   1.2) Literal block content
-
-   1.2.1) Huff0 block, using sizes from header
-        See Huff0 format
-
-   1.2.2) Huff0 block, using prepared table
-
-   1.2.3) Raw content
-
-   1.2.4) single byte
-
-
-   2) Sequences section
-      TO DO
-*/
+/* See compression format details in : zstd_compression_format.md */
 
 /** ZSTD_frameHeaderSize() :
 *   srcSize must be >= ZSTD_frameHeaderSize_min.
@@ -314,10 +206,10 @@ static size_t ZSTD_frameHeaderSize(const void* src, size_t srcSize)
     if (srcSize < ZSTD_frameHeaderSize_min) return ERROR(srcSize_wrong);
     {   BYTE const fhd = ((const BYTE*)src)[4];
         U32 const dictID= fhd & 3;
-        U32 const directMode = (fhd >> 5) & 1;
+        U32 const singleSegment = (fhd >> 5) & 1;
         U32 const fcsId = fhd >> 6;
-        return ZSTD_frameHeaderSize_min + !directMode + ZSTD_did_fieldSize[dictID] + ZSTD_fcs_fieldSize[fcsId]
-                + (directMode && !ZSTD_fcs_fieldSize[fcsId]);
+        return ZSTD_frameHeaderSize_min + !singleSegment + ZSTD_did_fieldSize[dictID] + ZSTD_fcs_fieldSize[fcsId]
+                + (singleSegment && !ZSTD_fcs_fieldSize[fcsId]);
     }
 }
 
@@ -351,14 +243,14 @@ size_t ZSTD_getFrameParams(ZSTD_frameParams* fparamsPtr, const void* src, size_t
         size_t pos = 5;
         U32 const dictIDSizeCode = fhdByte&3;
         U32 const checksumFlag = (fhdByte>>2)&1;
-        U32 const directMode = (fhdByte>>5)&1;
+        U32 const singleSegment = (fhdByte>>5)&1;
         U32 const fcsID = fhdByte>>6;
         U32 const windowSizeMax = 1U << ZSTD_WINDOWLOG_MAX;
         U32 windowSize = 0;
         U32 dictID = 0;
         U64 frameContentSize = 0;
         if ((fhdByte & 0x08) != 0) return ERROR(frameParameter_unsupported);   /* reserved bits, which must be zero */
-        if (!directMode) {
+        if (!singleSegment) {
             BYTE const wlByte = ip[pos++];
             U32 const windowLog = (wlByte >> 3) + ZSTD_WINDOWLOG_ABSOLUTEMIN;
             if (windowLog > ZSTD_WINDOWLOG_MAX) return ERROR(frameParameter_unsupported);
@@ -377,7 +269,7 @@ size_t ZSTD_getFrameParams(ZSTD_frameParams* fparamsPtr, const void* src, size_t
         switch(fcsID)
         {
             default:   /* impossible */
-            case 0 : if (directMode) frameContentSize = ip[pos]; break;
+            case 0 : if (singleSegment) frameContentSize = ip[pos]; break;
             case 1 : frameContentSize = MEM_readLE16(ip+pos)+256; break;
             case 2 : frameContentSize = MEM_readLE32(ip+pos); break;
             case 3 : frameContentSize = MEM_readLE64(ip+pos); break;
@@ -397,9 +289,9 @@ size_t ZSTD_getFrameParams(ZSTD_frameParams* fparamsPtr, const void* src, size_t
 *   compatible with legacy mode
 *   @return : decompressed size if known, 0 otherwise
               note : 0 can mean any of the following :
-                   - decompressed size is not provided within frame header
+                   - decompressed size is not present within frame header
                    - frame header unknown / not supported
-                   - frame header not completely provided (`srcSize` too small) */
+                   - frame header not complete (`srcSize` too small) */
 unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize)
 {
 #if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT==1)
@@ -427,7 +319,8 @@ static size_t ZSTD_decodeFrameHeader(ZSTD_DCtx* dctx, const void* src, size_t sr
 
 typedef struct
 {
-    blockType_t blockType;
+    blockType_e blockType;
+    U32 lastBlock;
     U32 origSize;
 } blockProperties_t;
 
@@ -435,18 +328,16 @@ typedef struct
 *   Provides the size of compressed block from block header `src` */
 size_t ZSTD_getcBlockSize(const void* src, size_t srcSize, blockProperties_t* bpPtr)
 {
-    const BYTE* const in = (const BYTE* const)src;
-    U32 cSize;
-
     if (srcSize < ZSTD_blockHeaderSize) return ERROR(srcSize_wrong);
-
-    bpPtr->blockType = (blockType_t)((*in) >> 6);
-    cSize = in[2] + (in[1]<<8) + ((in[0] & 7)<<16);
-    bpPtr->origSize = (bpPtr->blockType == bt_rle) ? cSize : 0;
-
-    if (bpPtr->blockType == bt_end) return 0;
-    if (bpPtr->blockType == bt_rle) return 1;
-    return cSize;
+    {   U32 const cBlockHeader = MEM_readLE24(src);
+        U32 const cSize = cBlockHeader >> 3;
+        bpPtr->lastBlock = cBlockHeader & 1;
+        bpPtr->blockType = (blockType_e)((cBlockHeader >> 1) & 3);
+        bpPtr->origSize = cSize;   /* only useful for RLE */
+        if (bpPtr->blockType == bt_rle) return 1;
+        if (bpPtr->blockType == bt_reserved) return ERROR(corruption_detected);
+        return cSize;
+    }
 }
 
 
@@ -458,136 +349,143 @@ static size_t ZSTD_copyRawBlock(void* dst, size_t dstCapacity, const void* src,
 }
 
 
+static size_t ZSTD_setRleBlock(void* dst, size_t dstCapacity, const void* src, size_t srcSize, size_t regenSize)
+{
+    if (srcSize != 1) return ERROR(srcSize_wrong);
+    if (regenSize > dstCapacity) return ERROR(dstSize_tooSmall);
+    memset(dst, *(const BYTE*)src, regenSize);
+    return regenSize;
+}
+
 /*! ZSTD_decodeLiteralsBlock() :
     @return : nb of bytes read from src (< srcSize ) */
 size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
                           const void* src, size_t srcSize)   /* note : srcSize < BLOCKSIZE */
 {
-    const BYTE* const istart = (const BYTE*) src;
-
     if (srcSize < MIN_CBLOCK_SIZE) return ERROR(corruption_detected);
 
-    switch((litBlockType_t)(istart[0]>> 6))
-    {
-    case lbt_huffman:
-        {   size_t litSize, litCSize, singleStream=0;
-            U32 lhSize = (istart[0] >> 4) & 3;
-            if (srcSize < 5) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for lhSize, + cSize (+nbSeq) */
-            switch(lhSize)
-            {
-            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */
-                /* 2 - 2 - 10 - 10 */
-                lhSize=3;
-                singleStream = istart[0] & 16;
-                litSize  = ((istart[0] & 15) << 6) + (istart[1] >> 2);
-                litCSize = ((istart[1] &  3) << 8) + istart[2];
-                break;
-            case 2:
-                /* 2 - 2 - 14 - 14 */
-                lhSize=4;
-                litSize  = ((istart[0] & 15) << 10) + (istart[1] << 2) + (istart[2] >> 6);
-                litCSize = ((istart[2] & 63) <<  8) + istart[3];
-                break;
-            case 3:
-                /* 2 - 2 - 18 - 18 */
-                lhSize=5;
-                litSize  = ((istart[0] & 15) << 14) + (istart[1] << 6) + (istart[2] >> 2);
-                litCSize = ((istart[2] &  3) << 16) + (istart[3] << 8) + istart[4];
-                break;
-            }
-            if (litSize > ZSTD_BLOCKSIZE_MAX) return ERROR(corruption_detected);
-            if (litCSize + lhSize > srcSize) return ERROR(corruption_detected);
+    {   const BYTE* const istart = (const BYTE*) src;
+        symbolEncodingType_e const litEncType = (symbolEncodingType_e)(istart[0] & 3);
 
-            if (HUF_isError(singleStream ?
-                            HUF_decompress1X2_DCtx(dctx->hufTable, dctx->litBuffer, litSize, istart+lhSize, litCSize) :
-                            HUF_decompress4X_hufOnly (dctx->hufTable, dctx->litBuffer, litSize, istart+lhSize, litCSize) ))
-                return ERROR(corruption_detected);
+        switch(litEncType)
+        {
+        case set_repeat:
+            if (dctx->litEntropy==0) return ERROR(dictionary_corrupted);
+            /* fall-through */
+        case set_compressed:
+            if (srcSize < 5) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for case 3 */
+            {   size_t lhSize, litSize, litCSize;
+                U32 singleStream=0;
+                U32 const lhlCode = (istart[0] >> 2) & 3;
+                U32 const lhc = MEM_readLE32(istart);
+                switch(lhlCode)
+                {
+                case 0: case 1: default:   /* note : default is impossible, since lhlCode into [0..3] */
+                    /* 2 - 2 - 10 - 10 */
+                    {   singleStream = !lhlCode;
+                        lhSize = 3;
+                        litSize  = (lhc >> 4) & 0x3FF;
+                        litCSize = (lhc >> 14) & 0x3FF;
+                        break;
+                    }
+                case 2:
+                    /* 2 - 2 - 14 - 14 */
+                    {   lhSize = 4;
+                        litSize  = (lhc >> 4) & 0x3FFF;
+                        litCSize = lhc >> 18;
+                        break;
+                    }
+                case 3:
+                    /* 2 - 2 - 18 - 18 */
+                    {   lhSize = 5;
+                        litSize  = (lhc >> 4) & 0x3FFFF;
+                        litCSize = (lhc >> 22) + (istart[4] << 10);
+                        break;
+                    }
+                }
+                if (litSize > ZSTD_BLOCKSIZE_ABSOLUTEMAX) return ERROR(corruption_detected);
+                if (litCSize + lhSize > srcSize) return ERROR(corruption_detected);
 
-            dctx->litPtr = dctx->litBuffer;
-            dctx->litBufSize = ZSTD_BLOCKSIZE_MAX+8;
-            dctx->litSize = litSize;
-            dctx->litEntropy = 1;
-            return litCSize + lhSize;
-        }
-    case lbt_repeat:
-        {   size_t litSize, litCSize;
-            U32 lhSize = ((istart[0]) >> 4) & 3;
-            if (lhSize != 1)  /* only case supported for now : small litSize, single stream */
-                return ERROR(corruption_detected);
-            if (dctx->litEntropy==0)
-                return ERROR(dictionary_corrupted);
+                if (HUF_isError((litEncType==set_repeat) ?
+                                    ( singleStream ?
+                                        HUF_decompress1X_usingDTable(dctx->litBuffer, litSize, istart+lhSize, litCSize, dctx->hufTable) :
+                                        HUF_decompress4X_usingDTable(dctx->litBuffer, litSize, istart+lhSize, litCSize, dctx->hufTable) ) :
+                                    ( singleStream ?
+                                        HUF_decompress1X2_DCtx(dctx->hufTable, dctx->litBuffer, litSize, istart+lhSize, litCSize) :
+                                        HUF_decompress4X_hufOnly (dctx->hufTable, dctx->litBuffer, litSize, istart+lhSize, litCSize)) ))
+                    return ERROR(corruption_detected);
 
-            /* 2 - 2 - 10 - 10 */
-            lhSize=3;
-            litSize  = ((istart[0] & 15) << 6) + (istart[1] >> 2);
-            litCSize = ((istart[1] &  3) << 8) + istart[2];
-            if (litCSize + lhSize > srcSize) return ERROR(corruption_detected);
-
-            {   size_t const errorCode = HUF_decompress1X4_usingDTable(dctx->litBuffer, litSize, istart+lhSize, litCSize, dctx->hufTable);
-                if (HUF_isError(errorCode)) return ERROR(corruption_detected);
-            }
-            dctx->litPtr = dctx->litBuffer;
-            dctx->litBufSize = ZSTD_BLOCKSIZE_MAX+WILDCOPY_OVERLENGTH;
-            dctx->litSize = litSize;
-            return litCSize + lhSize;
-        }
-    case lbt_raw:
-        {   size_t litSize;
-            U32 lhSize = ((istart[0]) >> 4) & 3;
-            switch(lhSize)
-            {
-            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */
-                lhSize=1;
-                litSize = istart[0] & 31;
-                break;
-            case 2:
-                litSize = ((istart[0] & 15) << 8) + istart[1];
-                break;
-            case 3:
-                litSize = ((istart[0] & 15) << 16) + (istart[1] << 8) + istart[2];
-                break;
-            }
-
-            if (lhSize+litSize+WILDCOPY_OVERLENGTH > srcSize) {  /* risk reading beyond src buffer with wildcopy */
-                if (litSize+lhSize > srcSize) return ERROR(corruption_detected);
-                memcpy(dctx->litBuffer, istart+lhSize, litSize);
                 dctx->litPtr = dctx->litBuffer;
-                dctx->litBufSize = ZSTD_BLOCKSIZE_MAX+8;
+                dctx->litBufSize = ZSTD_BLOCKSIZE_ABSOLUTEMAX+WILDCOPY_OVERLENGTH;
+                dctx->litSize = litSize;
+                dctx->litEntropy = 1;
+                return litCSize + lhSize;
+            }
+
+        case set_basic:
+            {   size_t litSize, lhSize;
+                U32 const lhlCode = ((istart[0]) >> 2) & 3;
+                switch(lhlCode)
+                {
+                case 0: case 2: default:   /* note : default is impossible, since lhlCode into [0..3] */
+                    lhSize = 1;
+                    litSize = istart[0] >> 3;
+                    break;
+                case 1:
+                    lhSize = 2;
+                    litSize = MEM_readLE16(istart) >> 4;
+                    break;
+                case 3:
+                    lhSize = 3;
+                    litSize = MEM_readLE24(istart) >> 4;
+                    break;
+                }
+
+                if (lhSize+litSize+WILDCOPY_OVERLENGTH > srcSize) {  /* risk reading beyond src buffer with wildcopy */
+                    if (litSize+lhSize > srcSize) return ERROR(corruption_detected);
+                    memcpy(dctx->litBuffer, istart+lhSize, litSize);
+                    dctx->litPtr = dctx->litBuffer;
+                    dctx->litBufSize = ZSTD_BLOCKSIZE_ABSOLUTEMAX+8;
+                    dctx->litSize = litSize;
+                    return lhSize+litSize;
+                }
+                /* direct reference into compressed stream */
+                dctx->litPtr = istart+lhSize;
+                dctx->litBufSize = srcSize-lhSize;
                 dctx->litSize = litSize;
                 return lhSize+litSize;
             }
-            /* direct reference into compressed stream */
-            dctx->litPtr = istart+lhSize;
-            dctx->litBufSize = srcSize-lhSize;
-            dctx->litSize = litSize;
-            return lhSize+litSize;
-        }
-    case lbt_rle:
-        {   size_t litSize;
-            U32 lhSize = ((istart[0]) >> 4) & 3;
-            switch(lhSize)
-            {
-            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */
-                lhSize = 1;
-                litSize = istart[0] & 31;
-                break;
-            case 2:
-                litSize = ((istart[0] & 15) << 8) + istart[1];
-                break;
-            case 3:
-                litSize = ((istart[0] & 15) << 16) + (istart[1] << 8) + istart[2];
-                if (srcSize<4) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need lhSize+1 = 4 */
-                break;
+
+        case set_rle:
+            {   U32 const lhlCode = ((istart[0]) >> 2) & 3;
+                size_t litSize, lhSize;
+                switch(lhlCode)
+                {
+                case 0: case 2: default:   /* note : default is impossible, since lhlCode into [0..3] */
+                    lhSize = 1;
+                    litSize = istart[0] >> 3;
+                    break;
+                case 1:
+                    lhSize = 2;
+                    litSize = MEM_readLE16(istart) >> 4;
+                    break;
+                case 3:
+                    lhSize = 3;
+                    litSize = MEM_readLE24(istart) >> 4;
+                    if (srcSize<4) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need lhSize+1 = 4 */
+                    break;
+                }
+                if (litSize > ZSTD_BLOCKSIZE_ABSOLUTEMAX) return ERROR(corruption_detected);
+                memset(dctx->litBuffer, istart[lhSize], litSize);
+                dctx->litPtr = dctx->litBuffer;
+                dctx->litBufSize = ZSTD_BLOCKSIZE_ABSOLUTEMAX+WILDCOPY_OVERLENGTH;
+                dctx->litSize = litSize;
+                return lhSize+1;
             }
-            if (litSize > ZSTD_BLOCKSIZE_MAX) return ERROR(corruption_detected);
-            memset(dctx->litBuffer, istart[lhSize], litSize);
-            dctx->litPtr = dctx->litBuffer;
-            dctx->litBufSize = ZSTD_BLOCKSIZE_MAX+WILDCOPY_OVERLENGTH;
-            dctx->litSize = litSize;
-            return lhSize+1;
+        default:
+            return ERROR(corruption_detected);   /* impossible */
         }
-    default:
-        return ERROR(corruption_detected);   /* impossible */
+
     }
 }
 
@@ -596,25 +494,25 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
     @return : nb bytes read from src,
               or an error code if it fails, testable with ZSTD_isError()
 */
-FORCE_INLINE size_t ZSTD_buildSeqTable(FSE_DTable* DTable, U32 type, U32 max, U32 maxLog,
+FORCE_INLINE size_t ZSTD_buildSeqTable(FSE_DTable* DTable, symbolEncodingType_e type, U32 max, U32 maxLog,
                                  const void* src, size_t srcSize,
                                  const S16* defaultNorm, U32 defaultLog, U32 flagRepeatTable)
 {
     switch(type)
     {
-    case FSE_ENCODING_RLE :
+    case set_rle :
         if (!srcSize) return ERROR(srcSize_wrong);
         if ( (*(const BYTE*)src) > max) return ERROR(corruption_detected);
         FSE_buildDTable_rle(DTable, *(const BYTE*)src);   /* if *src > max, data is corrupted */
         return 1;
-    case FSE_ENCODING_RAW :
+    case set_basic :
         FSE_buildDTable(DTable, defaultNorm, max, defaultLog);
         return 0;
-    case FSE_ENCODING_STATIC:
+    case set_repeat:
         if (!flagRepeatTable) return ERROR(corruption_detected);
         return 0;
     default :   /* impossible */
-    case FSE_ENCODING_DYNAMIC :
+    case set_compressed :
         {   U32 tableLog;
             S16 norm[MaxSeq+1];
             size_t const headerSize = FSE_readNCount(norm, &max, &tableLog, src, srcSize);
@@ -650,14 +548,12 @@ size_t ZSTD_decodeSeqHeaders(int* nbSeqPtr,
     }
 
     /* FSE table descriptors */
-    {   U32 const LLtype  = *ip >> 6;
-        U32 const OFtype = (*ip >> 4) & 3;
-        U32 const MLtype  = (*ip >> 2) & 3;
+    if (ip+4 > iend) return ERROR(srcSize_wrong); /* minimum possible size */
+    {   symbolEncodingType_e const LLtype = (symbolEncodingType_e)(*ip >> 6);
+        symbolEncodingType_e const OFtype = (symbolEncodingType_e)((*ip >> 4) & 3);
+        symbolEncodingType_e const MLtype = (symbolEncodingType_e)((*ip >> 2) & 3);
         ip++;
 
-        /* check */
-        if (ip > iend-3) return ERROR(srcSize_wrong); /* min : all 3 are "raw", hence no header, but at least xxLog bits per type */
-
         /* Build DTables */
         {   size_t const llhSize = ZSTD_buildSeqTable(DTableLL, LLtype, MaxLL, LLFSELog, ip, iend-ip, LL_defaultNorm, LL_defaultNormLog, flagRepeatTable);
             if (ZSTD_isError(llhSize)) return ERROR(corruption_detected);
@@ -687,7 +583,7 @@ typedef struct {
     FSE_DState_t stateLL;
     FSE_DState_t stateOffb;
     FSE_DState_t stateML;
-    size_t prevOffset[ZSTD_REP_INIT];
+    size_t prevOffset[ZSTD_REP_NUM];
 } seqState_t;
 
 
@@ -731,9 +627,9 @@ static seq_t ZSTD_decodeSequence(seqState_t* seqState)
         }
 
         if (ofCode <= 1) {
-            if ((llCode == 0) & (offset <= 1)) offset = 1-offset;
+            offset += (llCode==0);
             if (offset) {
-                size_t const temp = seqState->prevOffset[offset];
+                size_t const temp = (offset==3) ? seqState->prevOffset[0] - 1 : seqState->prevOffset[offset];
                 if (offset != 1) seqState->prevOffset[2] = seqState->prevOffset[1];
                 seqState->prevOffset[1] = seqState->prevOffset[0];
                 seqState->prevOffset[0] = offset = temp;
@@ -774,7 +670,7 @@ size_t ZSTD_execSequence(BYTE* op,
     BYTE* const oLitEnd = op + sequence.litLength;
     size_t const sequenceLength = sequence.litLength + sequence.matchLength;
     BYTE* const oMatchEnd = op + sequenceLength;   /* risk : address space overflow (32-bits) */
-    BYTE* const oend_w = oend-WILDCOPY_OVERLENGTH;
+    BYTE* const oend_w = oend - WILDCOPY_OVERLENGTH;
     const BYTE* const iLitEnd = *litPtr + sequence.litLength;
     const BYTE* match = oLitEnd - sequence.offset;
 
@@ -867,7 +763,7 @@ static size_t ZSTD_decompressSequences(
     if (nbSeq) {
         seqState_t seqState;
         dctx->fseEntropy = 1;
-        { U32 i; for (i=0; i<ZSTD_REP_INIT; i++) seqState.prevOffset[i] = dctx->rep[i]; }
+        { U32 i; for (i=0; i<ZSTD_REP_NUM; i++) seqState.prevOffset[i] = dctx->rep[i]; }
         { size_t const errorCode = BIT_initDStream(&(seqState.DStream), ip, iend-ip);
           if (ERR_isError(errorCode)) return ERROR(corruption_detected); }
         FSE_initDState(&(seqState.stateLL), &(seqState.DStream), DTableLL);
@@ -885,12 +781,11 @@ static size_t ZSTD_decompressSequences(
         /* check if reached exact end */
         if (nbSeq) return ERROR(corruption_detected);
         /* save reps for next block */
-        { U32 i; for (i=0; i<ZSTD_REP_INIT; i++) dctx->rep[i] = (U32)(seqState.prevOffset[i]); }
+        { U32 i; for (i=0; i<ZSTD_REP_NUM; i++) dctx->rep[i] = (U32)(seqState.prevOffset[i]); }
     }
 
     /* last literal segment */
     {   size_t const lastLLSize = litEnd - litPtr;
-        //if (litPtr > litEnd) return ERROR(corruption_detected);   /* too many literals already used */
         if (lastLLSize > (size_t)(oend-op)) return ERROR(dstSize_tooSmall);
         memcpy(op, litPtr, lastLLSize);
         op += lastLLSize;
@@ -917,7 +812,7 @@ static size_t ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx,
 {   /* blockType == blockCompressed */
     const BYTE* ip = (const BYTE*)src;
 
-    if (srcSize >= ZSTD_BLOCKSIZE_MAX) return ERROR(srcSize_wrong);
+    if (srcSize >= ZSTD_BLOCKSIZE_ABSOLUTEMAX) return ERROR(srcSize_wrong);
 
     /* Decode literals sub-block */
     {   size_t const litCSize = ZSTD_decodeLiteralsBlock(dctx, src, srcSize);
@@ -966,7 +861,6 @@ static size_t ZSTD_decompressFrame(ZSTD_DCtx* dctx,
                                  const void* src, size_t srcSize)
 {
     const BYTE* ip = (const BYTE*)src;
-    const BYTE* const iend = ip + srcSize;
     BYTE* const ostart = (BYTE* const)dst;
     BYTE* const oend = ostart + dstCapacity;
     BYTE* op = ostart;
@@ -977,9 +871,11 @@ static size_t ZSTD_decompressFrame(ZSTD_DCtx* dctx,
 
     /* Frame Header */
     {   size_t const frameHeaderSize = ZSTD_frameHeaderSize(src, ZSTD_frameHeaderSize_min);
+        size_t result;
         if (ZSTD_isError(frameHeaderSize)) return frameHeaderSize;
         if (srcSize < frameHeaderSize+ZSTD_blockHeaderSize) return ERROR(srcSize_wrong);
-        if (ZSTD_decodeFrameHeader(dctx, src, frameHeaderSize)) return ERROR(corruption_detected);
+        result = ZSTD_decodeFrameHeader(dctx, src, frameHeaderSize);
+        if (ZSTD_isError(result)) return result;
         ip += frameHeaderSize; remainingSize -= frameHeaderSize;
     }
 
@@ -987,7 +883,7 @@ static size_t ZSTD_decompressFrame(ZSTD_DCtx* dctx,
     while (1) {
         size_t decodedSize;
         blockProperties_t blockProperties;
-        size_t const cBlockSize = ZSTD_getcBlockSize(ip, iend-ip, &blockProperties);
+        size_t const cBlockSize = ZSTD_getcBlockSize(ip, remainingSize, &blockProperties);
         if (ZSTD_isError(cBlockSize)) return cBlockSize;
 
         ip += ZSTD_blockHeaderSize;
@@ -1005,23 +901,29 @@ static size_t ZSTD_decompressFrame(ZSTD_DCtx* dctx,
         case bt_rle :
             decodedSize = ZSTD_generateNxBytes(op, oend-op, *ip, blockProperties.origSize);
             break;
-        case bt_end :
-            /* end of frame */
-            if (remainingSize) return ERROR(srcSize_wrong);
-            decodedSize = 0;
-            break;
+        case bt_reserved :
         default:
-            return ERROR(GENERIC);   /* impossible */
+            return ERROR(corruption_detected);
         }
-        if (cBlockSize == 0) break;   /* bt_end */
 
         if (ZSTD_isError(decodedSize)) return decodedSize;
         if (dctx->fParams.checksumFlag) XXH64_update(&dctx->xxhState, op, decodedSize);
         op += decodedSize;
         ip += cBlockSize;
         remainingSize -= cBlockSize;
+        if (blockProperties.lastBlock) break;
     }
 
+    if (dctx->fParams.checksumFlag) {   /* Frame content checksum verification */
+        U32 const checkCalc = (U32)XXH64_digest(&dctx->xxhState);
+        U32 checkRead;
+        if (remainingSize<4) return ERROR(checksum_wrong);
+        checkRead = MEM_readLE32(ip);
+        if (checkRead != checkCalc) return ERROR(checksum_wrong);
+        remainingSize -= 4;
+    }
+
+    if (remainingSize) return ERROR(srcSize_wrong);
     return op-ostart;
 }
 
@@ -1077,18 +979,33 @@ size_t ZSTD_decompress(void* dst, size_t dstCapacity, const void* src, size_t sr
 }
 
 
-/*_******************************
-*  Streaming Decompression API
-********************************/
-size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx)
-{
-    return dctx->expected;
+/*-**********************************
+*   Streaming Decompression API
+************************************/
+size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx) { return dctx->expected; }
+
+ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx) {
+    switch(dctx->stage)
+    {
+    default:   /* should not happen */
+    case ZSTDds_getFrameHeaderSize:
+    case ZSTDds_decodeFrameHeader:
+        return ZSTDnit_frameHeader;
+    case ZSTDds_decodeBlockHeader:
+        return ZSTDnit_blockHeader;
+    case ZSTDds_decompressBlock:
+        return ZSTDnit_block;
+    case ZSTDds_decompressLastBlock:
+        return ZSTDnit_lastBlock;
+    case ZSTDds_checkChecksum:
+        return ZSTDnit_checksum;
+    case ZSTDds_decodeSkippableHeader:
+    case ZSTDds_skipFrame:
+        return ZSTDnit_skippableFrame;
+    }
 }
 
-int ZSTD_isSkipFrame(ZSTD_DCtx* dctx)
-{
-    return dctx->stage == ZSTDds_skipFrame;
-}
+int ZSTD_isSkipFrame(ZSTD_DCtx* dctx) { return dctx->stage == ZSTDds_skipFrame; }   /* for zbuff */
 
 /** ZSTD_decompressContinue() :
 *   @return : nb of bytes generated into `dst` (necessarily <= `dstCapacity)
@@ -1132,23 +1049,29 @@ size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, c
         {   blockProperties_t bp;
             size_t const cBlockSize = ZSTD_getcBlockSize(src, ZSTD_blockHeaderSize, &bp);
             if (ZSTD_isError(cBlockSize)) return cBlockSize;
-            if (bp.blockType == bt_end) {
+            dctx->expected = cBlockSize;
+            dctx->bType = bp.blockType;
+            dctx->rleSize = bp.origSize;
+            if (cBlockSize) {
+                dctx->stage = bp.lastBlock ? ZSTDds_decompressLastBlock : ZSTDds_decompressBlock;
+                return 0;
+            }
+            /* empty block */
+            if (bp.lastBlock) {
                 if (dctx->fParams.checksumFlag) {
-                    U64 const h64 = XXH64_digest(&dctx->xxhState);
-                    U32 const h32 = (U32)(h64>>11) & ((1<<22)-1);
-                    const BYTE* const ip = (const BYTE*)src;
-                    U32 const check32 = ip[2] + (ip[1] << 8) + ((ip[0] & 0x3F) << 16);
-                    if (check32 != h32) return ERROR(checksum_wrong);
+                    dctx->expected = 4;
+                    dctx->stage = ZSTDds_checkChecksum;
+                } else {
+                    dctx->expected = 0; /* end of frame */
+                    dctx->stage = ZSTDds_getFrameHeaderSize;
                 }
-                dctx->expected = 0;
-                dctx->stage = ZSTDds_getFrameHeaderSize;
             } else {
-                dctx->expected = cBlockSize;
-                dctx->bType = bp.blockType;
-                dctx->stage = ZSTDds_decompressBlock;
+                dctx->expected = 3;  /* go directly to next header */
+                dctx->stage = ZSTDds_decodeBlockHeader;
             }
             return 0;
         }
+    case ZSTDds_decompressLastBlock:
     case ZSTDds_decompressBlock:
         {   size_t rSize;
             switch(dctx->bType)
@@ -1160,21 +1083,38 @@ size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, c
                 rSize = ZSTD_copyRawBlock(dst, dstCapacity, src, srcSize);
                 break;
             case bt_rle :
-                return ERROR(GENERIC);   /* not yet handled */
-                break;
-            case bt_end :   /* should never happen (filtered at phase 1) */
-                rSize = 0;
+                rSize = ZSTD_setRleBlock(dst, dstCapacity, src, srcSize, dctx->rleSize);
                 break;
+            case bt_reserved :   /* should never happen */
             default:
-                return ERROR(GENERIC);   /* impossible */
+                return ERROR(corruption_detected);
             }
-            dctx->stage = ZSTDds_decodeBlockHeader;
-            dctx->expected = ZSTD_blockHeaderSize;
-            dctx->previousDstEnd = (char*)dst + rSize;
             if (ZSTD_isError(rSize)) return rSize;
             if (dctx->fParams.checksumFlag) XXH64_update(&dctx->xxhState, dst, rSize);
+
+            if (dctx->stage == ZSTDds_decompressLastBlock) {   /* end of frame */
+                if (dctx->fParams.checksumFlag) {  /* another round for frame checksum */
+                    dctx->expected = 4;
+                    dctx->stage = ZSTDds_checkChecksum;
+                } else {
+                    dctx->expected = 0;   /* ends here */
+                    dctx->stage = ZSTDds_getFrameHeaderSize;
+                }
+            } else {
+                dctx->stage = ZSTDds_decodeBlockHeader;
+                dctx->expected = ZSTD_blockHeaderSize;
+                dctx->previousDstEnd = (char*)dst + rSize;
+            }
             return rSize;
         }
+    case ZSTDds_checkChecksum:
+        {   U32 const h32 = (U32)XXH64_digest(&dctx->xxhState);
+            U32 const check32 = MEM_readLE32(src);   /* srcSize == 4, guaranteed by dctx->expected */
+            if (check32 != h32) return ERROR(checksum_wrong);
+            dctx->expected = 0;
+            dctx->stage = ZSTDds_getFrameHeaderSize;
+            return 0;
+        }
     case ZSTDds_decodeSkippableHeader:
         {   memcpy(dctx->headerBuffer + ZSTD_frameHeaderSize_min, src, dctx->expected);
             dctx->expected = MEM_readLE32(dctx->headerBuffer + 4);
diff --git a/C/zstd/zstd_internal.h b/C/zstd/zstd_internal.h
index 43cbc9a3..0a1935a9 100644
--- a/C/zstd/zstd_internal.h
+++ b/C/zstd/zstd_internal.h
@@ -52,8 +52,9 @@
 *  Common constants
 ***************************************/
 #define ZSTD_OPT_DEBUG 0     /* 3 = compression stats;  5 = check encoded sequences;  9 = full logs */
-#include <stdio.h>
 #if defined(ZSTD_OPT_DEBUG) && ZSTD_OPT_DEBUG>=9
+    #include <stdio.h>
+    #include <stdlib.h>
     #define ZSTD_LOG_PARSER(...) printf(__VA_ARGS__)
     #define ZSTD_LOG_ENCODE(...) printf(__VA_ARGS__)
     #define ZSTD_LOG_BLOCK(...) printf(__VA_ARGS__)
@@ -64,10 +65,10 @@
 #endif
 
 #define ZSTD_OPT_NUM    (1<<12)
-#define ZSTD_DICT_MAGIC  0xEC30A437   /* v0.7 */
+#define ZSTD_DICT_MAGIC  0xEC30A437   /* v0.7+ */
 
-#define ZSTD_REP_NUM    3
-#define ZSTD_REP_INIT   ZSTD_REP_NUM
+#define ZSTD_REP_NUM    3                 /* number of repcodes */
+#define ZSTD_REP_CHECK  (ZSTD_REP_NUM-0)  /* number of repcodes to check by the optimal parser */
 #define ZSTD_REP_MOVE   (ZSTD_REP_NUM-1)
 static const U32 repStartValue[ZSTD_REP_NUM] = { 1, 4, 8 };
 
@@ -88,13 +89,13 @@ static const size_t ZSTD_did_fieldSize[4] = { 0, 1, 2, 4 };
 
 #define ZSTD_BLOCKHEADERSIZE 3   /* C standard doesn't allow `static const` variable to be init using another `static const` variable */
 static const size_t ZSTD_blockHeaderSize = ZSTD_BLOCKHEADERSIZE;
-typedef enum { bt_compressed, bt_raw, bt_rle, bt_end } blockType_t;
+typedef enum { bt_raw, bt_rle, bt_compressed, bt_reserved } blockType_e;
 
 #define MIN_SEQUENCES_SIZE 1 /* nbSeq==0 */
 #define MIN_CBLOCK_SIZE (1 /*litCSize*/ + 1 /* RLE or RAW */ + MIN_SEQUENCES_SIZE /* nbSeq==0 */)   /* for a non-null block */
 
 #define HufLog 12
-typedef enum { lbt_huffman, lbt_repeat, lbt_raw, lbt_rle } litBlockType_t;
+typedef enum { set_basic, set_rle, set_compressed, set_repeat } symbolEncodingType_e;
 
 #define LONGNBSEQ 0x7F00
 
@@ -111,11 +112,6 @@ typedef enum { lbt_huffman, lbt_repeat, lbt_raw, lbt_rle } litBlockType_t;
 #define LLFSELog    9
 #define OffFSELog   8
 
-#define FSE_ENCODING_RAW     0
-#define FSE_ENCODING_RLE     1
-#define FSE_ENCODING_STATIC  2
-#define FSE_ENCODING_DYNAMIC 3
-
 static const U32 LL_bits[MaxLL+1] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                                       1, 1, 1, 1, 2, 2, 3, 3, 4, 6, 7, 8, 9,10,11,12,
                                      13,14,15,16 };
@@ -174,7 +170,7 @@ typedef struct {
     U32 off;
     U32 mlen;
     U32 litlen;
-    U32 rep[ZSTD_REP_INIT];
+    U32 rep[ZSTD_REP_NUM];
 } ZSTD_optimal_t;
 
 #if ZSTD_OPT_DEBUG == 3
@@ -187,19 +183,22 @@ typedef struct {
     MEM_STATIC void ZSTD_statsUpdatePrices(ZSTD_stats_t* stats, size_t litLength, const BYTE* literals, size_t offset, size_t matchLength) { (void)stats; (void)litLength; (void)literals; (void)offset; (void)matchLength; }
 #endif   /* #if ZSTD_OPT_DEBUG == 3 */
 
+
+typedef struct seqDef_s {
+    U32 offset;
+    U16 litLength;
+    U16 matchLength;
+} seqDef;
+
+
 typedef struct {
-    void* buffer;
-    U32*  offsetStart;
-    U32*  offset;
-    BYTE* offCodeStart;
+    seqDef* sequencesStart;
+    seqDef* sequences;
     BYTE* litStart;
     BYTE* lit;
-    U16*  litLengthStart;
-    U16*  litLength;
-    BYTE* llCodeStart;
-    U16*  matchLengthStart;
-    U16*  matchLength;
-    BYTE* mlCodeStart;
+    BYTE* llCode;
+    BYTE* mlCode;
+    BYTE* ofCode;
     U32   longLengthID;   /* 0 == no longLength; 1 == Lit.longLength; 2 == Match.longLength; */
     U32   longLengthPos;
     /* opt */
@@ -227,7 +226,7 @@ typedef struct {
 } seqStore_t;
 
 const seqStore_t* ZSTD_getSeqStore(const ZSTD_CCtx* ctx);
-void ZSTD_seqToCodes(const seqStore_t* seqStorePtr, size_t const nbSeq);
+void ZSTD_seqToCodes(const seqStore_t* seqStorePtr);
 int ZSTD_isSkipFrame(ZSTD_DCtx* dctx);
 
 /* custom memory allocation functions */
@@ -235,4 +234,29 @@ void* ZSTD_defaultAllocFunction(void* opaque, size_t size);
 void ZSTD_defaultFreeFunction(void* opaque, void* address);
 static const ZSTD_customMem defaultCustomMem = { ZSTD_defaultAllocFunction, ZSTD_defaultFreeFunction, NULL };
 
+/*======  common function  ======*/
+
+MEM_STATIC U32 ZSTD_highbit32(U32 val)
+{
+#   if defined(_MSC_VER)   /* Visual */
+    unsigned long r=0;
+    _BitScanReverse(&r, val);
+    return (unsigned)r;
+#   elif defined(__GNUC__) && (__GNUC__ >= 3)   /* GCC Intrinsic */
+    return 31 - __builtin_clz(val);
+#   else   /* Software version */
+    static const int DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 };
+    U32 v = val;
+    int r;
+    v |= v >> 1;
+    v |= v >> 2;
+    v |= v >> 4;
+    v |= v >> 8;
+    v |= v >> 16;
+    r = DeBruijnClz[(U32)(v * 0x07C4ACDDU) >> 27];
+    return r;
+#   endif
+}
+
+
 #endif   /* ZSTD_CCOMMON_H_MODULE */
diff --git a/C/zstd/zstd_legacy.h b/C/zstd/zstd_legacy.h
index ab07cbd6..9fb946c6 100644
--- a/C/zstd/zstd_legacy.h
+++ b/C/zstd/zstd_legacy.h
@@ -44,32 +44,65 @@ extern "C" {
 #include "error_private.h"  /* ERROR */
 #include "zstd_v05.h"
 #include "zstd_v06.h"
+#include "zstd_v07.h"
 
 
 /** ZSTD_isLegacy() :
     @return : > 0 if supported by legacy decoder. 0 otherwise.
               return value is the version.
 */
-MEM_STATIC unsigned ZSTD_isLegacy (U32 magicNumberLE)
+MEM_STATIC unsigned ZSTD_isLegacy(const void* src, size_t srcSize)
 {
+    U32 magicNumberLE;
+    if (srcSize<4) return 0;
+    magicNumberLE = MEM_readLE32(src);
     switch(magicNumberLE)
     {
         case ZSTDv05_MAGICNUMBER : return 5;
         case ZSTDv06_MAGICNUMBER : return 6;
+        case ZSTDv07_MAGICNUMBER : return 7;
         default : return 0;
     }
 }
 
 
+MEM_STATIC unsigned long long ZSTD_getDecompressedSize_legacy(const void* src, size_t srcSize)
+{
+    if (srcSize < 4) return 0;
+
+    {   U32 const version = ZSTD_isLegacy(src, srcSize);
+        if (version < 5) return 0;  /* no decompressed size in frame header, or not a legacy format */
+        if (version==5) {
+            ZSTDv05_parameters fParams;
+            size_t const frResult = ZSTDv05_getFrameParams(&fParams, src, srcSize);
+            if (frResult != 0) return 0;
+            return fParams.srcSize;
+        }
+        if (version==6) {
+            ZSTDv06_frameParams fParams;
+            size_t const frResult = ZSTDv06_getFrameParams(&fParams, src, srcSize);
+            if (frResult != 0) return 0;
+            return fParams.frameContentSize;
+        }
+        if (version==7) {
+            ZSTDv07_frameParams fParams;
+            size_t const frResult = ZSTDv07_getFrameParams(&fParams, src, srcSize);
+            if (frResult != 0) return 0;
+            return fParams.frameContentSize;
+        }
+        return 0;   /* should not be possible */
+    }
+}
+
 MEM_STATIC size_t ZSTD_decompressLegacy(
                      void* dst, size_t dstCapacity,
                const void* src, size_t compressedSize,
-               const void* dict,size_t dictSize,
-                     U32 magicNumberLE)
+               const void* dict,size_t dictSize)
 {
-    switch(magicNumberLE)
+    U32 const version = ZSTD_isLegacy(src, compressedSize);
+    switch(version)
     {
-        case ZSTDv05_MAGICNUMBER :
+        case 5 :
             {   size_t result;
                 ZSTDv05_DCtx* const zd = ZSTDv05_createDCtx();
                 if (zd==NULL) return ERROR(memory_allocation);
@@ -77,7 +110,7 @@ MEM_STATIC size_t ZSTD_decompressLegacy(
                 ZSTDv05_freeDCtx(zd);
                 return result;
             }
-        case ZSTDv06_MAGICNUMBER :
+        case 6 :
             {   size_t result;
                 ZSTDv06_DCtx* const zd = ZSTDv06_createDCtx();
                 if (zd==NULL) return ERROR(memory_allocation);
@@ -85,6 +118,14 @@ MEM_STATIC size_t ZSTD_decompressLegacy(
                 ZSTDv06_freeDCtx(zd);
                 return result;
             }
+        case 7 :
+            {   size_t result;
+                ZSTDv07_DCtx* const zd = ZSTDv07_createDCtx();
+                if (zd==NULL) return ERROR(memory_allocation);
+                result = ZSTDv07_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
+                ZSTDv07_freeDCtx(zd);
+                return result;
+            }
         default :
             return ERROR(prefix_unknown);
     }
diff --git a/C/zstd/zstd_opt.h b/C/zstd/zstd_opt.h
index ef394f19..3a1e9e19 100644
--- a/C/zstd/zstd_opt.h
+++ b/C/zstd/zstd_opt.h
@@ -134,15 +134,7 @@ FORCE_INLINE U32 ZSTD_getLiteralPrice(seqStore_t* ssPtr, U32 litLength, const BY
     }
 
     /* literal Length */
-    {   static const BYTE LL_Code[64] = {  0,  1,  2,  3,  4,  5,  6,  7,
-                                           8,  9, 10, 11, 12, 13, 14, 15,
-                                          16, 16, 17, 17, 18, 18, 19, 19,
-                                          20, 20, 20, 20, 21, 21, 21, 21,
-                                          22, 22, 22, 22, 22, 22, 22, 22,
-                                          23, 23, 23, 23, 23, 23, 23, 23,
-                                          24, 24, 24, 24, 24, 24, 24, 24,
-                                          24, 24, 24, 24, 24, 24, 24, 24 };
-        const BYTE LL_deltaCode = 19;
+    {   const BYTE LL_deltaCode = 19;
         const BYTE llCode = (litLength>63) ? (BYTE)ZSTD_highbit32(litLength) + LL_deltaCode : LL_Code[litLength];
         price += LL_bits[llCode] + ssPtr->log2litLengthSum - ZSTD_highbit32(ssPtr->litLengthFreq[llCode]+1);
     }
@@ -158,15 +150,7 @@ FORCE_INLINE U32 ZSTD_getPrice(seqStore_t* seqStorePtr, U32 litLength, const BYT
     U32 price = offCode + seqStorePtr->log2offCodeSum - ZSTD_highbit32(seqStorePtr->offCodeFreq[offCode]+1);
 
     /* match Length */
-    {   static const BYTE ML_Code[128] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
-                                          16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
-                                          32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37,
-                                          38, 38, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 39, 39,
-                                          40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-                                          41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41,
-                                          42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
-                                          42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42 };
-        const BYTE ML_deltaCode = 36;
+    {   const BYTE ML_deltaCode = 36;
         const BYTE mlCode = (matchLength>127) ? (BYTE)ZSTD_highbit32(matchLength) + ML_deltaCode : ML_Code[matchLength];
         price += ML_bits[mlCode] + seqStorePtr->log2matchLengthSum - ZSTD_highbit32(seqStorePtr->matchLengthFreq[mlCode]+1);
     }
@@ -185,15 +169,7 @@ MEM_STATIC void ZSTD_updatePrice(seqStore_t* seqStorePtr, U32 litLength, const B
         seqStorePtr->litFreq[literals[u]]++;
 
     /* literal Length */
-    {   static const BYTE LL_Code[64] = {  0,  1,  2,  3,  4,  5,  6,  7,
-                                           8,  9, 10, 11, 12, 13, 14, 15,
-                                          16, 16, 17, 17, 18, 18, 19, 19,
-                                          20, 20, 20, 20, 21, 21, 21, 21,
-                                          22, 22, 22, 22, 22, 22, 22, 22,
-                                          23, 23, 23, 23, 23, 23, 23, 23,
-                                          24, 24, 24, 24, 24, 24, 24, 24,
-                                          24, 24, 24, 24, 24, 24, 24, 24 };
-        const BYTE LL_deltaCode = 19;
+    {   const BYTE LL_deltaCode = 19;
         const BYTE llCode = (litLength>63) ? (BYTE)ZSTD_highbit32(litLength) + LL_deltaCode : LL_Code[litLength];
         seqStorePtr->litLengthFreq[llCode]++;
         seqStorePtr->litLengthSum++;
@@ -206,15 +182,7 @@ MEM_STATIC void ZSTD_updatePrice(seqStore_t* seqStorePtr, U32 litLength, const B
 	}
 
     /* match Length */
-    {   static const BYTE ML_Code[128] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
-                                          16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
-                                          32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37,
-                                          38, 38, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 39, 39,
-                                          40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
-                                          41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41,
-                                          42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
-                                          42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42 };
-        const BYTE ML_deltaCode = 36;
+    {   const BYTE ML_deltaCode = 36;
         const BYTE mlCode = (matchLength>127) ? (BYTE)ZSTD_highbit32(matchLength) + ML_deltaCode : ML_Code[matchLength];
         seqStorePtr->matchLengthFreq[mlCode]++;
         seqStorePtr->matchLengthSum++;
@@ -464,13 +432,14 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
     ZSTD_optimal_t* opt = seqStorePtr->priceTable;
     ZSTD_match_t* matches = seqStorePtr->matchTable;
     const BYTE* inr;
-    U32 offset, rep[ZSTD_REP_INIT];
+    U32 offset, rep[ZSTD_REP_NUM];
 
     /* init */
     ctx->nextToUpdate3 = ctx->nextToUpdate;
     ZSTD_rescaleFreqs(seqStorePtr);
     ip += (ip==prefixStart);
-    { U32 i; for (i=0; i<ZSTD_REP_INIT; i++) rep[i]=ctx->rep[i]; }
+    { U32 i; for (i=0; i<ZSTD_REP_NUM; i++) rep[i]=ctx->rep[i]; }
+    inr = ip;
 
     ZSTD_LOG_BLOCK("%d: COMPBLOCK_OPT_GENERIC srcSz=%d maxSrch=%d mls=%d sufLen=%d\n", (int)(ip-base), (int)srcSize, maxSearches, mls, sufficient_len);
 
@@ -484,7 +453,7 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
 
         /* check repCode */
         {   U32 i;
-            for (i=0; i<ZSTD_REP_NUM; i++) {
+            for (i=(ip == anchor); i<ZSTD_REP_CHECK; i++) {
                 if ((rep[i]<(U32)(ip-prefixStart))
                     && (MEM_readMINMATCH(ip, minMatch) == MEM_readMINMATCH(ip - rep[i], minMatch))) {
                     mlen = (U32)ZSTD_count(ip+minMatch, ip+minMatch-rep[i], iend) + minMatch;
@@ -493,7 +462,7 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
                         best_mlen = mlen; best_off = i; cur = 0; last_pos = 1;
                         goto _storeSequence;
                     }
-                    best_off = (i<=1 && ip == anchor) ? 1-i : i;
+                    best_off = i - (ip == anchor);
                     do {
                         price = ZSTD_getPrice(seqStorePtr, litlen, anchor, best_off, mlen - MINMATCH);
                         if (mlen > last_pos || price < opt[mlen].price)
@@ -531,7 +500,7 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
         if (last_pos < minMatch) { ip++; continue; }
 
         /* initialize opt[0] */
-        { U32 i ; for (i=0; i<ZSTD_REP_INIT; i++) opt[0].rep[i] = rep[i]; }
+        { U32 i ; for (i=0; i<ZSTD_REP_NUM; i++) opt[0].rep[i] = rep[i]; }
         opt[0].mlen = 1;
         opt[0].litlen = litlen;
 
@@ -575,19 +544,21 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
 
            best_mlen = minMatch;
            {   U32 i;
-               for (i=0; i<ZSTD_REP_NUM; i++) {
+               for (i=(opt[cur].mlen != 1); i<ZSTD_REP_CHECK; i++) {  /* check rep */
                    if ((opt[cur].rep[i]<(U32)(inr-prefixStart))
-                       && (MEM_readMINMATCH(inr, minMatch) == MEM_readMINMATCH(inr - opt[cur].rep[i], minMatch))) {  /* check rep */
+                       && (MEM_readMINMATCH(inr, minMatch) == MEM_readMINMATCH(inr - opt[cur].rep[i], minMatch))) {
                        mlen = (U32)ZSTD_count(inr+minMatch, inr+minMatch - opt[cur].rep[i], iend) + minMatch;
                        ZSTD_LOG_PARSER("%d: Found REP %d/%d mlen=%d off=%d rep=%d opt[%d].off=%d\n", (int)(inr-base), i, ZSTD_REP_NUM, mlen, i, opt[cur].rep[i], cur, opt[cur].off);
 
                        if (mlen > sufficient_len || cur + mlen >= ZSTD_OPT_NUM) {
-                            ZSTD_LOG_PARSER("%d: REP sufficient_len=%d best_mlen=%d best_off=%d last_pos=%d\n", (int)(inr-base), sufficient_len, best_mlen, best_off, last_pos);
                             best_mlen = mlen; best_off = i; last_pos = cur + 1;
+                            ZSTD_LOG_PARSER("%d: REP sufficient_len=%d best_mlen=%d best_off=%d last_pos=%d\n", (int)(inr-base), sufficient_len, best_mlen, best_off, last_pos);
                             goto _storeSequence;
                        }
 
-                       best_off = (i<=1 && opt[cur].mlen != 1) ? 1-i : i;
+                       //best_off = ((i<=1) & (opt[cur].mlen != 1)) ? 1-i : i;
+                       best_off = i - (opt[cur].mlen != 1);
+
                        if (opt[cur].mlen == 1) {
                             litlen = opt[cur].litlen;
                             if (cur > litlen) {
@@ -692,7 +663,8 @@ _storeSequence:   /* cur, last_pos, best_mlen, best_off have to be set */
                     rep[1] = rep[0];
                     rep[0] = best_off;
                 }
-                if (litLength == 0 && offset<=1) offset = 1-offset;
+                if ((litLength == 0) & (offset==0)) offset = rep[1];  /* protection, but should never happen */
+                if ((litLength == 0) & (offset<=2)) offset--;
             }
 
             ZSTD_LOG_ENCODE("%d/%d: ENCODE literals=%d mlen=%d off=%d rep[0]=%d rep[1]=%d\n", (int)(ip-base), (int)(iend-base), (int)(litLength), (int)mlen, (int)(offset), (int)rep[0], (int)rep[1]);
@@ -755,12 +727,13 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
     const BYTE* inr;
 
     /* init */
-    U32 offset, rep[ZSTD_REP_INIT];
-    { U32 i; for (i=0; i<ZSTD_REP_INIT; i++) rep[i]=ctx->rep[i]; }
+    U32 offset, rep[ZSTD_REP_NUM];
+    { U32 i; for (i=0; i<ZSTD_REP_NUM; i++) rep[i]=ctx->rep[i]; }
 
     ctx->nextToUpdate3 = ctx->nextToUpdate;
     ZSTD_rescaleFreqs(seqStorePtr);
     ip += (ip==prefixStart);
+    inr = ip;
 
     ZSTD_LOG_BLOCK("%d: COMPBLOCK_OPT_EXTDICT srcSz=%d maxSrch=%d mls=%d sufLen=%d\n", (int)(ip-base), (int)srcSize, maxSearches, mls, sufficient_len);
 
@@ -776,11 +749,12 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
 
         /* check repCode */
         {   U32 i;
-            for (i=0; i<ZSTD_REP_NUM; i++) {
+            for (i = (ip==anchor); i<ZSTD_REP_CHECK; i++) {
                 const U32 repIndex = (U32)(current - rep[i]);
                 const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
                 const BYTE* const repMatch = repBase + repIndex;
-                if ( (((U32)((dictLimit-1) - repIndex) >= 3) & (repIndex>lowestIndex))  /* intentional overflow */
+                if ( (rep[i] <= current)
+                   && (((U32)((dictLimit-1) - repIndex) >= 3) & (repIndex>lowestIndex))  /* intentional overflow */
                    && (MEM_readMINMATCH(ip, minMatch) == MEM_readMINMATCH(repMatch, minMatch)) ) {
                     /* repcode detected we should take it */
                     const BYTE* const repEnd = repIndex < dictLimit ? dictEnd : iend;
@@ -792,7 +766,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
                         goto _storeSequence;
                     }
 
-                    best_off = (i<=1 && ip == anchor) ? 1-i : i;
+                    best_off = i - (ip==anchor);
                     litlen = opt[0].litlen;
                     do {
                         price = ZSTD_getPrice(seqStorePtr, litlen, anchor, best_off, mlen - MINMATCH);
@@ -807,7 +781,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
         ZSTD_LOG_PARSER("%d: match_num=%d last_pos=%d\n", (int)(ip-base), match_num, last_pos);
         if (!last_pos && !match_num) { ip++; continue; }
 
-        { U32 i; for (i=0; i<ZSTD_REP_INIT; i++) opt[0].rep[i] = rep[i]; }
+        { U32 i; for (i=0; i<ZSTD_REP_NUM; i++) opt[0].rep[i] = rep[i]; }
         opt[0].mlen = 1;
 
         if (match_num && (matches[match_num-1].len > sufficient_len || matches[match_num-1].len >= ZSTD_OPT_NUM)) {
@@ -878,11 +852,12 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
             best_mlen = 0;
 
             {   U32 i;
-                for (i=0; i<ZSTD_REP_NUM; i++) {
+                for (i = (opt[cur].mlen != 1); i<ZSTD_REP_CHECK; i++) {
                     const U32 repIndex = (U32)(current+cur - opt[cur].rep[i]);
                     const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
                     const BYTE* const repMatch = repBase + repIndex;
-                    if ( (((U32)((dictLimit-1) - repIndex) >= 3) & (repIndex>lowestIndex))  /* intentional overflow */
+                    if ( (opt[cur].rep[i] <= current+cur)
+                      && (((U32)((dictLimit-1) - repIndex) >= 3) & (repIndex>lowestIndex))  /* intentional overflow */
                       && (MEM_readMINMATCH(inr, minMatch) == MEM_readMINMATCH(repMatch, minMatch)) ) {
                         /* repcode detected */
                         const BYTE* const repEnd = repIndex < dictLimit ? dictEnd : iend;
@@ -890,12 +865,12 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
                         ZSTD_LOG_PARSER("%d: Found REP %d/%d mlen=%d off=%d rep=%d opt[%d].off=%d\n", (int)(inr-base), i, ZSTD_REP_NUM, mlen, i, opt[cur].rep[i], cur, opt[cur].off);
 
                         if (mlen > sufficient_len || cur + mlen >= ZSTD_OPT_NUM) {
-                            ZSTD_LOG_PARSER("%d: REP sufficient_len=%d best_mlen=%d best_off=%d last_pos=%d\n", (int)(inr-base), sufficient_len, best_mlen, best_off, last_pos);
                             best_mlen = mlen; best_off = i; last_pos = cur + 1;
+                            ZSTD_LOG_PARSER("%d: REP sufficient_len=%d best_mlen=%d best_off=%d last_pos=%d\n", (int)(inr-base), sufficient_len, best_mlen, best_off, last_pos);
                             goto _storeSequence;
                         }
 
-                        best_off = (i<=1 && opt[cur].mlen != 1) ? 1-i : i;
+                        best_off = i - (opt[cur].mlen != 1);
                         if (opt[cur].mlen == 1) {
                             litlen = opt[cur].litlen;
                             if (cur > litlen) {
@@ -1001,8 +976,9 @@ _storeSequence:   /* cur, last_pos, best_mlen, best_off have to be set */
                     if (offset != 1) rep[2] = rep[1];
                     rep[1] = rep[0];
                     rep[0] = best_off;
-                 }
-                 if (litLength == 0 && offset<=1) offset = 1-offset;
+                }
+                if ((litLength==0) & (offset==0)) offset = rep[1];  /* protection, but should never happen */
+                if ((litLength==0) & (offset<=2)) offset --;
             }
 
             ZSTD_LOG_ENCODE("%d/%d: ENCODE literals=%d mlen=%d off=%d rep[0]=%d rep[1]=%d\n", (int)(ip-base), (int)(iend-base), (int)(litLength), (int)mlen, (int)(offset), (int)rep[0], (int)rep[1]);
@@ -1016,7 +992,7 @@ _storeSequence:   /* cur, last_pos, best_mlen, best_off have to be set */
                     ml2 = ZSTD_count_2segments(ip, match, iend, dictEnd, prefixStart);
                     ZSTD_LOG_PARSER("%d: ZSTD_count_2segments=%d offset=%d dictBase=%p dictEnd=%p prefixStart=%p ip=%p match=%p\n", (int)current, (int)ml2, (int)best_off, dictBase, dictEnd, prefixStart, ip, match);
                 }
-                else ml2 = (U32)ZSTD_count(ip, ip-offset, iend);
+                else ml2 = (U32)ZSTD_count(ip, ip-best_off, iend);
             }
             else ml2 = (U32)ZSTD_count(ip, ip-rep[0], iend);
             if ((offset >= 8) && (ml2 < mlen || ml2 < minMatch)) {
@@ -1033,7 +1009,7 @@ _storeSequence:   /* cur, last_pos, best_mlen, best_off have to be set */
     }    }   /* for (cur=0; cur < last_pos; ) */
 
     /* Save reps for next block */
-    ctx->savedRep[0] = rep[0]; ctx->savedRep[1] = rep[1]; ctx->savedRep[2] = rep[2];
+    { int i; for (i=0; i<ZSTD_REP_NUM; i++) ctx->savedRep[i] = rep[i]; }
 
     /* Last Literals */
     {   size_t lastLLSize = iend - anchor;
diff --git a/C/zstd/zstd_v05.c b/C/zstd/zstd_v05.c
index d5072479..f3c720fd 100644
--- a/C/zstd/zstd_v05.c
+++ b/C/zstd/zstd_v05.c
@@ -436,21 +436,6 @@ extern "C" {
 ***************************************/
 #define ZSTDv05_WINDOWLOG_ABSOLUTEMIN 11
 
-/* from faster to stronger */
-typedef enum { ZSTDv05_fast, ZSTDv05_greedy, ZSTDv05_lazy, ZSTDv05_lazy2, ZSTDv05_btlazy2, ZSTDv05_opt, ZSTDv05_btopt } ZSTDv05_strategy;
-
-typedef struct
-{
-    U64 srcSize;       /* optional : tells how much bytes are present in the frame. Use 0 if not known. */
-    U32 windowLog;     /* largest match distance : larger == more compression, more memory needed during decompression */
-    U32 contentLog;    /* full search segment : larger == more compression, slower, more memory (useless for fast) */
-    U32 hashLog;       /* dispatch table : larger == faster, more memory */
-    U32 searchLog;     /* nb of searches : larger == more compression, slower */
-    U32 searchLength;  /* match length searched : larger == faster decompression, sometimes less compression */
-    U32 targetLength;  /* acceptable match size for optimal parser (only) : larger == more compression, slower */
-    ZSTDv05_strategy strategy;
-} ZSTDv05_parameters;
-
 
 /*-*************************************
 *  Advanced functions
@@ -2023,7 +2008,6 @@ extern "C" {
 ******************************************/
 size_t HUFv05_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* single-symbol decoder */
 size_t HUFv05_decompress4X4 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* double-symbols decoder */
-size_t HUFv05_decompress4X6 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* quad-symbols decoder */
 
 
 /* ****************************************
@@ -2037,22 +2021,18 @@ HUFv05_decompress() does the following:
 */
 size_t HUFv05_readDTableX2 (unsigned short* DTable, const void* src, size_t srcSize);
 size_t HUFv05_readDTableX4 (unsigned* DTable, const void* src, size_t srcSize);
-size_t HUFv05_readDTableX6 (unsigned* DTable, const void* src, size_t srcSize);
 
 size_t HUFv05_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const unsigned short* DTable);
 size_t HUFv05_decompress4X4_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const unsigned* DTable);
-size_t HUFv05_decompress4X6_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const unsigned* DTable);
 
 
 /* single stream variants */
 
 size_t HUFv05_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* single-symbol decoder */
 size_t HUFv05_decompress1X4 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* double-symbol decoder */
-size_t HUFv05_decompress1X6 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* quad-symbol decoder */
 
 size_t HUFv05_decompress1X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const unsigned short* DTable);
 size_t HUFv05_decompress1X4_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const unsigned* DTable);
-size_t HUFv05_decompress1X6_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const unsigned* DTable);
 
 
 
@@ -2372,9 +2352,6 @@ size_t HUFv05_decompress4X2_usingDTable(
     const U32 dtLog = DTable[0];
     size_t errorCode;
 
-    /* Check */
-    if (cSrcSize < 10) return ERROR(corruption_detected);   /* strict minimum : jump table + 1 byte per stream */
-
     /* Init */
     BITv05_DStream_t bitD1;
     BITv05_DStream_t bitD2;
@@ -2398,6 +2375,9 @@ size_t HUFv05_decompress4X2_usingDTable(
     BYTE* op4 = opStart4;
     U32 endSignal;
 
+    /* Check */
+    if (cSrcSize < 10) return ERROR(corruption_detected);   /* strict minimum : jump table + 1 byte per stream */
+
     length4 = cSrcSize - (length1 + length2 + length3 + 6);
     if (length4 > cSrcSize) return ERROR(corruption_detected);   /* overflow */
     errorCode = BITv05_initDStream(&bitD1, istart1, length1);
@@ -2850,376 +2830,6 @@ size_t HUFv05_decompress4X4 (void* dst, size_t dstSize, const void* cSrc, size_t
 }
 
 
-/* ********************************/
-/* quad-symbol decoding           */
-/* ********************************/
-typedef struct { BYTE nbBits; BYTE nbBytes; } HUFv05_DDescX6;
-typedef union { BYTE byte[4]; U32 sequence; } HUFv05_DSeqX6;
-
-/* recursive, up to level 3; may benefit from <template>-like strategy to nest each level inline */
-static void HUFv05_fillDTableX6LevelN(HUFv05_DDescX6* DDescription, HUFv05_DSeqX6* DSequence, int sizeLog,
-                           const rankVal_t rankValOrigin, const U32 consumed, const int minWeight, const U32 maxWeight,
-                           const sortedSymbol_t* sortedSymbols, const U32 sortedListSize, const U32* rankStart,
-                           const U32 nbBitsBaseline, HUFv05_DSeqX6 baseSeq, HUFv05_DDescX6 DDesc)
-{
-    const int scaleLog = nbBitsBaseline - sizeLog;   /* note : targetLog >= (nbBitsBaseline-1), hence scaleLog <= 1 */
-    const int minBits  = nbBitsBaseline - maxWeight;
-    const U32 level = DDesc.nbBytes;
-    U32 rankVal[HUFv05_ABSOLUTEMAX_TABLELOG + 1];
-    U32 symbolStartPos, s;
-
-    /* local rankVal, will be modified */
-    memcpy(rankVal, rankValOrigin[consumed], sizeof(rankVal));
-
-    /* fill skipped values */
-    if (minWeight>1) {
-        U32 i;
-        const U32 skipSize = rankVal[minWeight];
-        for (i = 0; i < skipSize; i++) {
-            DSequence[i] = baseSeq;
-            DDescription[i] = DDesc;
-    }   }
-
-    /* fill DTable */
-    DDesc.nbBytes++;
-    symbolStartPos = rankStart[minWeight];
-    for (s=symbolStartPos; s<sortedListSize; s++) {
-        const BYTE symbol = sortedSymbols[s].symbol;
-        const U32  weight = sortedSymbols[s].weight;   /* >= 1 (sorted) */
-        const int  nbBits = nbBitsBaseline - weight;   /* >= 1 (by construction) */
-        const int  totalBits = consumed+nbBits;
-        const U32  start  = rankVal[weight];
-        const U32  length = 1 << (sizeLog-nbBits);
-        baseSeq.byte[level] = symbol;
-        DDesc.nbBits = (BYTE)totalBits;
-
-        if ((level<3) && (sizeLog-totalBits >= minBits)) {  /* enough room for another symbol */
-            int nextMinWeight = totalBits + scaleLog;
-            if (nextMinWeight < 1) nextMinWeight = 1;
-            HUFv05_fillDTableX6LevelN(DDescription+start, DSequence+start, sizeLog-nbBits,
-                           rankValOrigin, totalBits, nextMinWeight, maxWeight,
-                           sortedSymbols, sortedListSize, rankStart,
-                           nbBitsBaseline, baseSeq, DDesc);   /* recursive (max : level 3) */
-        } else {
-            U32 i;
-            const U32 end = start + length;
-            for (i = start; i < end; i++) {
-                DDescription[i] = DDesc;
-                DSequence[i] = baseSeq;
-        }   }
-        rankVal[weight] += length;
-    }
-}
-
-
-/* note : same preparation as X4 */
-size_t HUFv05_readDTableX6 (U32* DTable, const void* src, size_t srcSize)
-{
-    BYTE weightList[HUFv05_MAX_SYMBOL_VALUE + 1];
-    sortedSymbol_t sortedSymbol[HUFv05_MAX_SYMBOL_VALUE + 1];
-    U32 rankStats[HUFv05_ABSOLUTEMAX_TABLELOG + 1] = { 0 };
-    U32 rankStart0[HUFv05_ABSOLUTEMAX_TABLELOG + 2] = { 0 };
-    U32* const rankStart = rankStart0+1;
-    U32 tableLog, maxW, sizeOfSort, nbSymbols;
-    rankVal_t rankVal;
-    const U32 memLog = DTable[0];
-    size_t iSize;
-
-    if (memLog > HUFv05_ABSOLUTEMAX_TABLELOG) return ERROR(tableLog_tooLarge);
-    //memset(weightList, 0, sizeof(weightList));   /* is not necessary, even though some analyzer complain ... */
-
-    iSize = HUFv05_readStats(weightList, HUFv05_MAX_SYMBOL_VALUE + 1, rankStats, &nbSymbols, &tableLog, src, srcSize);
-    if (HUFv05_isError(iSize)) return iSize;
-
-    /* check result */
-    if (tableLog > memLog) return ERROR(tableLog_tooLarge);   /* DTable is too small */
-
-    /* find maxWeight */
-    for (maxW = tableLog; rankStats[maxW]==0; maxW--) {}  /* necessarily finds a solution before 0 */
-
-    /* Get start index of each weight */
-    {
-        U32 w, nextRankStart = 0;
-        for (w=1; w<=maxW; w++) {
-            U32 current = nextRankStart;
-            nextRankStart += rankStats[w];
-            rankStart[w] = current;
-        }
-        rankStart[0] = nextRankStart;   /* put all 0w symbols at the end of sorted list*/
-        sizeOfSort = nextRankStart;
-    }
-
-    /* sort symbols by weight */
-    {
-        U32 s;
-        for (s=0; s<nbSymbols; s++) {
-            U32 w = weightList[s];
-            U32 r = rankStart[w]++;
-            sortedSymbol[r].symbol = (BYTE)s;
-            sortedSymbol[r].weight = (BYTE)w;
-        }
-        rankStart[0] = 0;   /* forget 0w symbols; this is beginning of weight(1) */
-    }
-
-    /* Build rankVal */
-    {
-        const U32 minBits = tableLog+1 - maxW;
-        U32 nextRankVal = 0;
-        U32 w, consumed;
-        const int rescale = (memLog-tableLog) - 1;   /* tableLog <= memLog */
-        U32* rankVal0 = rankVal[0];
-        for (w=1; w<=maxW; w++) {
-            U32 current = nextRankVal;
-            nextRankVal += rankStats[w] << (w+rescale);
-            rankVal0[w] = current;
-        }
-        for (consumed = minBits; consumed <= memLog - minBits; consumed++) {
-            U32* rankValPtr = rankVal[consumed];
-            for (w = 1; w <= maxW; w++) {
-                rankValPtr[w] = rankVal0[w] >> consumed;
-    }   }   }
-
-    /* fill tables */
-    {
-        void* ddPtr = DTable+1;
-        HUFv05_DDescX6* DDescription = (HUFv05_DDescX6*)ddPtr;
-        void* dsPtr = DTable + 1 + ((size_t)1<<(memLog-1));
-        HUFv05_DSeqX6* DSequence = (HUFv05_DSeqX6*)dsPtr;
-        HUFv05_DSeqX6 DSeq;
-        HUFv05_DDescX6 DDesc;
-        DSeq.sequence = 0;
-        DDesc.nbBits = 0;
-        DDesc.nbBytes = 0;
-        HUFv05_fillDTableX6LevelN(DDescription, DSequence, memLog,
-                       (const U32 (*)[HUFv05_ABSOLUTEMAX_TABLELOG + 1])rankVal, 0, 1, maxW,
-                       sortedSymbol, sizeOfSort, rankStart0,
-                       tableLog+1, DSeq, DDesc);
-    }
-
-    return iSize;
-}
-
-
-static U32 HUFv05_decodeSymbolX6(void* op, BITv05_DStream_t* DStream, const HUFv05_DDescX6* dd, const HUFv05_DSeqX6* ds, const U32 dtLog)
-{
-    const size_t val = BITv05_lookBitsFast(DStream, dtLog);   /* note : dtLog >= 1 */
-    memcpy(op, ds+val, sizeof(HUFv05_DSeqX6));
-    BITv05_skipBits(DStream, dd[val].nbBits);
-    return dd[val].nbBytes;
-}
-
-static U32 HUFv05_decodeLastSymbolsX6(void* op, const U32 maxL, BITv05_DStream_t* DStream,
-                                  const HUFv05_DDescX6* dd, const HUFv05_DSeqX6* ds, const U32 dtLog)
-{
-    const size_t val = BITv05_lookBitsFast(DStream, dtLog);   /* note : dtLog >= 1 */
-    U32 length = dd[val].nbBytes;
-    if (length <= maxL) {
-        memcpy(op, ds+val, length);
-        BITv05_skipBits(DStream, dd[val].nbBits);
-        return length;
-    }
-    memcpy(op, ds+val, maxL);
-    if (DStream->bitsConsumed < (sizeof(DStream->bitContainer)*8)) {
-        BITv05_skipBits(DStream, dd[val].nbBits);
-        if (DStream->bitsConsumed > (sizeof(DStream->bitContainer)*8))
-            DStream->bitsConsumed = (sizeof(DStream->bitContainer)*8);   /* ugly hack; works only because it's the last symbol. Note : can't easily extract nbBits from just this symbol */
-    }
-    return maxL;
-}
-
-
-#define HUFv05_DECODE_SYMBOLX6_0(ptr, DStreamPtr) \
-    ptr += HUFv05_decodeSymbolX6(ptr, DStreamPtr, dd, ds, dtLog)
-
-#define HUFv05_DECODE_SYMBOLX6_1(ptr, DStreamPtr) \
-    if (MEM_64bits() || (HUFv05_MAX_TABLELOG<=12)) \
-        HUFv05_DECODE_SYMBOLX6_0(ptr, DStreamPtr)
-
-#define HUFv05_DECODE_SYMBOLX6_2(ptr, DStreamPtr) \
-    if (MEM_64bits()) \
-        HUFv05_DECODE_SYMBOLX6_0(ptr, DStreamPtr)
-
-static inline size_t HUFv05_decodeStreamX6(BYTE* p, BITv05_DStream_t* bitDPtr, BYTE* const pEnd, const U32* DTable, const U32 dtLog)
-{
-    const void* const ddPtr = DTable+1;
-    const HUFv05_DDescX6* dd = (const HUFv05_DDescX6*)ddPtr;
-    const void* const dsPtr = DTable + 1 + ((size_t)1<<(dtLog-1));
-    const HUFv05_DSeqX6* ds = (const HUFv05_DSeqX6*)dsPtr;
-    BYTE* const pStart = p;
-
-    /* up to 16 symbols at a time */
-    while ((BITv05_reloadDStream(bitDPtr) == BITv05_DStream_unfinished) && (p <= pEnd-16)) {
-        HUFv05_DECODE_SYMBOLX6_2(p, bitDPtr);
-        HUFv05_DECODE_SYMBOLX6_1(p, bitDPtr);
-        HUFv05_DECODE_SYMBOLX6_2(p, bitDPtr);
-        HUFv05_DECODE_SYMBOLX6_0(p, bitDPtr);
-    }
-
-    /* closer to the end, up to 4 symbols at a time */
-    while ((BITv05_reloadDStream(bitDPtr) == BITv05_DStream_unfinished) && (p <= pEnd-4))
-        HUFv05_DECODE_SYMBOLX6_0(p, bitDPtr);
-
-    while ((BITv05_reloadDStream(bitDPtr) <= BITv05_DStream_endOfBuffer) && (p < pEnd))
-        p += HUFv05_decodeLastSymbolsX6(p, (U32)(pEnd-p), bitDPtr, dd, ds, dtLog);
-
-    return p-pStart;
-}
-
-
-size_t HUFv05_decompress1X6_usingDTable(
-          void* dst,  size_t dstSize,
-    const void* cSrc, size_t cSrcSize,
-    const U32* DTable)
-{
-    const BYTE* const istart = (const BYTE*) cSrc;
-    BYTE* const ostart = (BYTE*) dst;
-    BYTE* const oend = ostart + dstSize;
-
-    const U32 dtLog = DTable[0];
-    size_t errorCode;
-
-    /* Init */
-    BITv05_DStream_t bitD;
-    errorCode = BITv05_initDStream(&bitD, istart, cSrcSize);
-    if (HUFv05_isError(errorCode)) return errorCode;
-
-    /* finish bitStreams one by one */
-    HUFv05_decodeStreamX6(ostart, &bitD, oend, DTable, dtLog);
-
-    /* check */
-    if (!BITv05_endOfDStream(&bitD)) return ERROR(corruption_detected);
-
-    /* decoded size */
-    return dstSize;
-}
-
-size_t HUFv05_decompress1X6 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
-{
-    HUFv05_CREATE_STATIC_DTABLEX6(DTable, HUFv05_MAX_TABLELOG);
-    const BYTE* ip = (const BYTE*) cSrc;
-
-    size_t hSize = HUFv05_readDTableX6 (DTable, cSrc, cSrcSize);
-    if (HUFv05_isError(hSize)) return hSize;
-    if (hSize >= cSrcSize) return ERROR(srcSize_wrong);
-    ip += hSize;
-    cSrcSize -= hSize;
-
-    return HUFv05_decompress1X6_usingDTable (dst, dstSize, ip, cSrcSize, DTable);
-}
-
-
-size_t HUFv05_decompress4X6_usingDTable(
-          void* dst,  size_t dstSize,
-    const void* cSrc, size_t cSrcSize,
-    const U32* DTable)
-{
-    const BYTE* const istart = (const BYTE*) cSrc;
-    BYTE* const ostart = (BYTE*) dst;
-    BYTE* const oend = ostart + dstSize;
-
-    const U32 dtLog = DTable[0];
-    const void* const ddPtr = DTable+1;
-    const HUFv05_DDescX6* dd = (const HUFv05_DDescX6*)ddPtr;
-    const void* const dsPtr = DTable + 1 + ((size_t)1<<(dtLog-1));
-    const HUFv05_DSeqX6* ds = (const HUFv05_DSeqX6*)dsPtr;
-    size_t errorCode;
-
-    /* Check */
-    if (cSrcSize < 10) return ERROR(corruption_detected);   /* strict minimum : jump table + 1 byte per stream */
-
-    /* Init */
-    BITv05_DStream_t bitD1;
-    BITv05_DStream_t bitD2;
-    BITv05_DStream_t bitD3;
-    BITv05_DStream_t bitD4;
-    const size_t length1 = MEM_readLE16(istart);
-    const size_t length2 = MEM_readLE16(istart+2);
-    const size_t length3 = MEM_readLE16(istart+4);
-    size_t length4;
-    const BYTE* const istart1 = istart + 6;  /* jumpTable */
-    const BYTE* const istart2 = istart1 + length1;
-    const BYTE* const istart3 = istart2 + length2;
-    const BYTE* const istart4 = istart3 + length3;
-    const size_t segmentSize = (dstSize+3) / 4;
-    BYTE* const opStart2 = ostart + segmentSize;
-    BYTE* const opStart3 = opStart2 + segmentSize;
-    BYTE* const opStart4 = opStart3 + segmentSize;
-    BYTE* op1 = ostart;
-    BYTE* op2 = opStart2;
-    BYTE* op3 = opStart3;
-    BYTE* op4 = opStart4;
-    U32 endSignal;
-
-    length4 = cSrcSize - (length1 + length2 + length3 + 6);
-    if (length4 > cSrcSize) return ERROR(corruption_detected);   /* overflow */
-    errorCode = BITv05_initDStream(&bitD1, istart1, length1);
-    if (HUFv05_isError(errorCode)) return errorCode;
-    errorCode = BITv05_initDStream(&bitD2, istart2, length2);
-    if (HUFv05_isError(errorCode)) return errorCode;
-    errorCode = BITv05_initDStream(&bitD3, istart3, length3);
-    if (HUFv05_isError(errorCode)) return errorCode;
-    errorCode = BITv05_initDStream(&bitD4, istart4, length4);
-    if (HUFv05_isError(errorCode)) return errorCode;
-
-    /* 16-64 symbols per loop (4-16 symbols per stream) */
-    endSignal = BITv05_reloadDStream(&bitD1) | BITv05_reloadDStream(&bitD2) | BITv05_reloadDStream(&bitD3) | BITv05_reloadDStream(&bitD4);
-    for ( ; (op3 <= opStart4) && (endSignal==BITv05_DStream_unfinished) && (op4<=(oend-16)) ; ) {
-        HUFv05_DECODE_SYMBOLX6_2(op1, &bitD1);
-        HUFv05_DECODE_SYMBOLX6_2(op2, &bitD2);
-        HUFv05_DECODE_SYMBOLX6_2(op3, &bitD3);
-        HUFv05_DECODE_SYMBOLX6_2(op4, &bitD4);
-        HUFv05_DECODE_SYMBOLX6_1(op1, &bitD1);
-        HUFv05_DECODE_SYMBOLX6_1(op2, &bitD2);
-        HUFv05_DECODE_SYMBOLX6_1(op3, &bitD3);
-        HUFv05_DECODE_SYMBOLX6_1(op4, &bitD4);
-        HUFv05_DECODE_SYMBOLX6_2(op1, &bitD1);
-        HUFv05_DECODE_SYMBOLX6_2(op2, &bitD2);
-        HUFv05_DECODE_SYMBOLX6_2(op3, &bitD3);
-        HUFv05_DECODE_SYMBOLX6_2(op4, &bitD4);
-        HUFv05_DECODE_SYMBOLX6_0(op1, &bitD1);
-        HUFv05_DECODE_SYMBOLX6_0(op2, &bitD2);
-        HUFv05_DECODE_SYMBOLX6_0(op3, &bitD3);
-        HUFv05_DECODE_SYMBOLX6_0(op4, &bitD4);
-
-        endSignal = BITv05_reloadDStream(&bitD1) | BITv05_reloadDStream(&bitD2) | BITv05_reloadDStream(&bitD3) | BITv05_reloadDStream(&bitD4);
-    }
-
-    /* check corruption */
-    if (op1 > opStart2) return ERROR(corruption_detected);
-    if (op2 > opStart3) return ERROR(corruption_detected);
-    if (op3 > opStart4) return ERROR(corruption_detected);
-    /* note : op4 supposed already verified within main loop */
-
-    /* finish bitStreams one by one */
-    HUFv05_decodeStreamX6(op1, &bitD1, opStart2, DTable, dtLog);
-    HUFv05_decodeStreamX6(op2, &bitD2, opStart3, DTable, dtLog);
-    HUFv05_decodeStreamX6(op3, &bitD3, opStart4, DTable, dtLog);
-    HUFv05_decodeStreamX6(op4, &bitD4, oend,     DTable, dtLog);
-
-    /* check */
-    endSignal = BITv05_endOfDStream(&bitD1) & BITv05_endOfDStream(&bitD2) & BITv05_endOfDStream(&bitD3) & BITv05_endOfDStream(&bitD4);
-    if (!endSignal) return ERROR(corruption_detected);
-
-    /* decoded size */
-    return dstSize;
-}
-
-
-size_t HUFv05_decompress4X6 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
-{
-    HUFv05_CREATE_STATIC_DTABLEX6(DTable, HUFv05_MAX_TABLELOG);
-    const BYTE* ip = (const BYTE*) cSrc;
-
-    size_t hSize = HUFv05_readDTableX6 (DTable, cSrc, cSrcSize);
-    if (HUFv05_isError(hSize)) return hSize;
-    if (hSize >= cSrcSize) return ERROR(srcSize_wrong);
-    ip += hSize;
-    cSrcSize -= hSize;
-
-    return HUFv05_decompress4X6_usingDTable (dst, dstSize, ip, cSrcSize, DTable);
-}
-
-
 /* ********************************/
 /* Generic decompression selector */
 /* ********************************/
@@ -3250,7 +2860,7 @@ typedef size_t (*decompressionAlgo)(void* dst, size_t dstSize, const void* cSrc,
 
 size_t HUFv05_decompress (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
 {
-    static const decompressionAlgo decompress[3] = { HUFv05_decompress4X2, HUFv05_decompress4X4, HUFv05_decompress4X6 };
+    static const decompressionAlgo decompress[3] = { HUFv05_decompress4X2, HUFv05_decompress4X4, NULL };
     /* estimate decompression time */
     U32 Q;
     const U32 D256 = (U32)(dstSize >> 8);
@@ -3260,8 +2870,7 @@ size_t HUFv05_decompress (void* dst, size_t dstSize, const void* cSrc, size_t cS
 
     /* validation checks */
     if (dstSize == 0) return ERROR(dstSize_tooSmall);
-    if (cSrcSize > dstSize) return ERROR(corruption_detected);   /* invalid */
-    if (cSrcSize == dstSize) { memcpy(dst, cSrc, dstSize); return dstSize; }   /* not compressed */
+    if (cSrcSize >= dstSize) return ERROR(corruption_detected);   /* invalid, or not compressed, but not compressed already dealt with */
     if (cSrcSize == 1) { memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; }   /* RLE */
 
     /* decoder timing evaluation */
@@ -3272,7 +2881,6 @@ size_t HUFv05_decompress (void* dst, size_t dstSize, const void* cSrc, size_t cS
     Dtime[1] += Dtime[1] >> 4; Dtime[2] += Dtime[2] >> 3; /* advantage to algorithms using less memory, for cache eviction */
 
     if (Dtime[1] < Dtime[0]) algoNb = 1;
-    if (Dtime[2] < Dtime[algoNb]) algoNb = 2;
 
     return decompress[algoNb](dst, dstSize, cSrc, cSrcSize);
 
@@ -4264,25 +3872,17 @@ size_t ZSTDv05_decompressContinue(ZSTDv05_DCtx* dctx, void* dst, size_t maxDstSi
     switch (dctx->stage)
     {
     case ZSTDv05ds_getFrameHeaderSize :
-        {
-            /* get frame header size */
-            if (srcSize != ZSTDv05_frameHeaderSize_min) return ERROR(srcSize_wrong);   /* impossible */
-            dctx->headerSize = ZSTDv05_decodeFrameHeader_Part1(dctx, src, ZSTDv05_frameHeaderSize_min);
-            if (ZSTDv05_isError(dctx->headerSize)) return dctx->headerSize;
-            memcpy(dctx->headerBuffer, src, ZSTDv05_frameHeaderSize_min);
-            if (dctx->headerSize > ZSTDv05_frameHeaderSize_min) {
-                dctx->expected = dctx->headerSize - ZSTDv05_frameHeaderSize_min;
-                dctx->stage = ZSTDv05ds_decodeFrameHeader;
-                return 0;
-            }
-            dctx->expected = 0;   /* not necessary to copy more */
-        }
+        /* get frame header size */
+        if (srcSize != ZSTDv05_frameHeaderSize_min) return ERROR(srcSize_wrong);   /* impossible */
+        dctx->headerSize = ZSTDv05_decodeFrameHeader_Part1(dctx, src, ZSTDv05_frameHeaderSize_min);
+        if (ZSTDv05_isError(dctx->headerSize)) return dctx->headerSize;
+        memcpy(dctx->headerBuffer, src, ZSTDv05_frameHeaderSize_min);
+        if (dctx->headerSize > ZSTDv05_frameHeaderSize_min) return ERROR(GENERIC); /* should never happen */
+        dctx->expected = 0;   /* not necessary to copy more */
+        /* fallthrough */
     case ZSTDv05ds_decodeFrameHeader:
-        {
-            /* get frame header */
-            size_t result;
-            memcpy(dctx->headerBuffer + ZSTDv05_frameHeaderSize_min, src, dctx->expected);
-            result = ZSTDv05_decodeFrameHeader_Part2(dctx, dctx->headerBuffer, dctx->headerSize);
+        /* get frame header */
+        {   size_t const result = ZSTDv05_decodeFrameHeader_Part2(dctx, dctx->headerBuffer, dctx->headerSize);
             if (ZSTDv05_isError(result)) return result;
             dctx->expected = ZSTDv05_blockHeaderSize;
             dctx->stage = ZSTDv05ds_decodeBlockHeader;
@@ -4706,8 +4306,7 @@ size_t ZBUFFv05_decompressContinue(ZBUFFv05_DCtx* zbc, void* dst, size_t* maxDst
     *srcSizePtr = ip-istart;
     *maxDstSizePtr = op-ostart;
 
-    {
-        size_t nextSrcSizeHint = ZSTDv05_nextSrcSizeToDecompress(zbc->zc);
+    {   size_t nextSrcSizeHint = ZSTDv05_nextSrcSizeToDecompress(zbc->zc);
         if (nextSrcSizeHint > ZBUFFv05_blockHeaderSize) nextSrcSizeHint+= ZBUFFv05_blockHeaderSize;   /* get next block header too */
         nextSrcSizeHint -= zbc->inPos;   /* already loaded*/
         return nextSrcSizeHint;
diff --git a/C/zstd/zstd_v05.h b/C/zstd/zstd_v05.h
index d6de3236..6dc17a64 100644
--- a/C/zstd/zstd_v05.h
+++ b/C/zstd/zstd_v05.h
@@ -40,7 +40,7 @@ extern "C" {
 *  Dependencies
 ***************************************/
 #include <stddef.h>   /* size_t */
-
+#include "mem.h"      /* U64, U32 */
 
 
 /* *************************************
@@ -69,7 +69,7 @@ const char* ZSTDv05_getErrorName(size_t code);     /*!< provides readable string
 /** Decompression context */
 typedef struct ZSTDv05_DCtx_s ZSTDv05_DCtx;
 ZSTDv05_DCtx* ZSTDv05_createDCtx(void);
-size_t     ZSTDv05_freeDCtx(ZSTDv05_DCtx* dctx);      /*!< @return : errorCode */
+size_t ZSTDv05_freeDCtx(ZSTDv05_DCtx* dctx);      /*!< @return : errorCode */
 
 /** ZSTDv05_decompressDCtx() :
 *   Same as ZSTDv05_decompress(), but requires an already allocated ZSTDv05_DCtx (see ZSTDv05_createDCtx()) */
@@ -77,25 +77,40 @@ size_t ZSTDv05_decompressDCtx(ZSTDv05_DCtx* ctx, void* dst, size_t dstCapacity,
 
 
 /*-***********************
-*  Dictionary API
+*  Simple Dictionary API
 *************************/
 /*! ZSTDv05_decompress_usingDict() :
 *   Decompression using a pre-defined Dictionary content (see dictBuilder).
 *   Dictionary must be identical to the one used during compression, otherwise regenerated data will be corrupted.
 *   Note : dict can be NULL, in which case, it's equivalent to ZSTDv05_decompressDCtx() */
 size_t ZSTDv05_decompress_usingDict(ZSTDv05_DCtx* dctx,
-                                             void* dst, size_t dstCapacity,
-                                       const void* src, size_t srcSize,
-                                       const void* dict,size_t dictSize);
-
-
-
-
+                                            void* dst, size_t dstCapacity,
+                                      const void* src, size_t srcSize,
+                                      const void* dict,size_t dictSize);
+
+/*-************************
+*  Advanced Streaming API
+***************************/
+typedef enum { ZSTDv05_fast, ZSTDv05_greedy, ZSTDv05_lazy, ZSTDv05_lazy2, ZSTDv05_btlazy2, ZSTDv05_opt, ZSTDv05_btopt } ZSTDv05_strategy;
+typedef struct {
+    U64 srcSize;
+    U32 windowLog;     /* the only useful information to retrieve */
+    U32 contentLog; U32 hashLog; U32 searchLog; U32 searchLength; U32 targetLength; ZSTDv05_strategy strategy;
+} ZSTDv05_parameters;
+size_t ZSTDv05_getFrameParams(ZSTDv05_parameters* params, const void* src, size_t srcSize);
+
+size_t ZSTDv05_decompressBegin_usingDict(ZSTDv05_DCtx* dctx, const void* dict, size_t dictSize);
+void   ZSTDv05_copyDCtx(ZSTDv05_DCtx* dstDCtx, const ZSTDv05_DCtx* srcDCtx);
+size_t ZSTDv05_nextSrcSizeToDecompress(ZSTDv05_DCtx* dctx);
+size_t ZSTDv05_decompressContinue(ZSTDv05_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
 
 
+/*-***********************
+*  ZBUFF API
+*************************/
 typedef struct ZBUFFv05_DCtx_s ZBUFFv05_DCtx;
 ZBUFFv05_DCtx* ZBUFFv05_createDCtx(void);
-size_t      ZBUFFv05_freeDCtx(ZBUFFv05_DCtx* dctx);
+size_t         ZBUFFv05_freeDCtx(ZBUFFv05_DCtx* dctx);
 
 size_t ZBUFFv05_decompressInit(ZBUFFv05_DCtx* dctx);
 size_t ZBUFFv05_decompressInitDictionary(ZBUFFv05_DCtx* dctx, const void* dict, size_t dictSize);
diff --git a/C/zstd/zstd_v06.c b/C/zstd/zstd_v06.c
index 2640c86b..ce6967eb 100644
--- a/C/zstd/zstd_v06.c
+++ b/C/zstd/zstd_v06.c
@@ -36,7 +36,7 @@
 #include "zstd_v06.h"
 #include <stddef.h>    /* size_t, ptrdiff_t */
 #include <string.h>    /* memcpy */
-#include <stdlib.h>    /* malloc, free, qsort */ 
+#include <stdlib.h>    /* malloc, free, qsort */
 
 
 
@@ -535,8 +535,6 @@ ZSTDLIB_API size_t ZSTDv06_decompress_usingPreparedDCtx(
 
 
 
-struct ZSTDv06_frameParams_s { U64 frameContentSize; U32 windowLog; };
-
 #define ZSTDv06_FRAMEHEADERSIZE_MAX 13    /* for static allocation */
 static const size_t ZSTDv06_frameHeaderSize_min = 5;
 static const size_t ZSTDv06_frameHeaderSize_max = ZSTDv06_FRAMEHEADERSIZE_MAX;
diff --git a/C/zstd/zstd_v06.h b/C/zstd/zstd_v06.h
index 55619bef..177f1483 100644
--- a/C/zstd/zstd_v06.h
+++ b/C/zstd/zstd_v06.h
@@ -107,7 +107,7 @@ ZSTDLIB_API size_t ZSTDv06_decompress_usingDict(ZSTDv06_DCtx* dctx,
 /*-************************
 *  Advanced Streaming API
 ***************************/
-
+struct ZSTDv06_frameParams_s { unsigned long long frameContentSize; unsigned windowLog; };
 typedef struct ZSTDv06_frameParams_s ZSTDv06_frameParams;
 
 ZSTDLIB_API size_t ZSTDv06_getFrameParams(ZSTDv06_frameParams* fparamsPtr, const void* src, size_t srcSize);   /**< doesn't consume input */
diff --git a/C/zstd/zstd_v07.c b/C/zstd/zstd_v07.c
new file mode 100644
index 00000000..d95fd438
--- /dev/null
+++ b/C/zstd/zstd_v07.c
@@ -0,0 +1,4936 @@
+/* ******************************************************************
+   zstd_v07.c
+   Decompression module for ZSTD v0.7 legacy format
+   Copyright (C) 2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - Homepage : http://www.zstd.net/
+****************************************************************** */
+
+/*- Dependencies -*/
+#include <stddef.h>     /* size_t, ptrdiff_t */
+#include <string.h>     /* memcpy */
+#include <stdlib.h>     /* malloc, free, qsort */
+
+#define XXH_STATIC_LINKING_ONLY   /* XXH64_state_t */
+#include "xxhash.h"      /* XXH64_* */
+#include "zstd_v07.h"
+
+#define FSEv07_STATIC_LINKING_ONLY  /* FSEv07_MIN_TABLELOG */
+#define HUFv07_STATIC_LINKING_ONLY  /* HUFv07_TABLELOG_ABSOLUTEMAX */
+#define ZSTDv07_STATIC_LINKING_ONLY
+
+
+#ifdef ZSTDv07_STATIC_LINKING_ONLY
+
+/* ====================================================================================
+ * The definitions in this section are considered experimental.
+ * They should never be used with a dynamic library, as they may change in the future.
+ * They are provided for advanced usages.
+ * Use them only in association with static linking.
+ * ==================================================================================== */
+
+/*--- Constants ---*/
+#define ZSTDv07_MAGIC_SKIPPABLE_START  0x184D2A50U
+
+#define ZSTDv07_WINDOWLOG_MAX_32  25
+#define ZSTDv07_WINDOWLOG_MAX_64  27
+#define ZSTDv07_WINDOWLOG_MAX    ((U32)(MEM_32bits() ? ZSTDv07_WINDOWLOG_MAX_32 : ZSTDv07_WINDOWLOG_MAX_64))
+#define ZSTDv07_WINDOWLOG_MIN     18
+#define ZSTDv07_CHAINLOG_MAX     (ZSTDv07_WINDOWLOG_MAX+1)
+#define ZSTDv07_CHAINLOG_MIN       4
+#define ZSTDv07_HASHLOG_MAX       ZSTDv07_WINDOWLOG_MAX
+#define ZSTDv07_HASHLOG_MIN       12
+#define ZSTDv07_HASHLOG3_MAX      17
+#define ZSTDv07_SEARCHLOG_MAX    (ZSTDv07_WINDOWLOG_MAX-1)
+#define ZSTDv07_SEARCHLOG_MIN      1
+#define ZSTDv07_SEARCHLENGTH_MAX   7
+#define ZSTDv07_SEARCHLENGTH_MIN   3
+#define ZSTDv07_TARGETLENGTH_MIN   4
+#define ZSTDv07_TARGETLENGTH_MAX 999
+
+#define ZSTDv07_FRAMEHEADERSIZE_MAX 18    /* for static allocation */
+static const size_t ZSTDv07_frameHeaderSize_min = 5;
+static const size_t ZSTDv07_frameHeaderSize_max = ZSTDv07_FRAMEHEADERSIZE_MAX;
+static const size_t ZSTDv07_skippableHeaderSize = 8;  /* magic number + skippable frame length */
+
+
+/* custom memory allocation functions */
+typedef void* (*ZSTDv07_allocFunction) (void* opaque, size_t size);
+typedef void  (*ZSTDv07_freeFunction) (void* opaque, void* address);
+typedef struct { ZSTDv07_allocFunction customAlloc; ZSTDv07_freeFunction customFree; void* opaque; } ZSTDv07_customMem;
+
+
+/*--- Advanced Decompression functions ---*/
+
+/*! ZSTDv07_estimateDCtxSize() :
+ *  Gives the potential amount of memory allocated to create a ZSTDv07_DCtx */
+ZSTDLIB_API size_t ZSTDv07_estimateDCtxSize(void);
+
+/*! ZSTDv07_createDCtx_advanced() :
+ *  Create a ZSTD decompression context using external alloc and free functions */
+ZSTDLIB_API ZSTDv07_DCtx* ZSTDv07_createDCtx_advanced(ZSTDv07_customMem customMem);
+
+/*! ZSTDv07_sizeofDCtx() :
+ *  Gives the amount of memory used by a given ZSTDv07_DCtx */
+ZSTDLIB_API size_t ZSTDv07_sizeofDCtx(const ZSTDv07_DCtx* dctx);
+
+
+/* ******************************************************************
+*  Buffer-less streaming functions (synchronous mode)
+********************************************************************/
+
+ZSTDLIB_API size_t ZSTDv07_decompressBegin(ZSTDv07_DCtx* dctx);
+ZSTDLIB_API size_t ZSTDv07_decompressBegin_usingDict(ZSTDv07_DCtx* dctx, const void* dict, size_t dictSize);
+ZSTDLIB_API void   ZSTDv07_copyDCtx(ZSTDv07_DCtx* dctx, const ZSTDv07_DCtx* preparedDCtx);
+
+ZSTDLIB_API size_t ZSTDv07_nextSrcSizeToDecompress(ZSTDv07_DCtx* dctx);
+ZSTDLIB_API size_t ZSTDv07_decompressContinue(ZSTDv07_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+
+/*
+  Buffer-less streaming decompression (synchronous mode)
+
+  A ZSTDv07_DCtx object is required to track streaming operations.
+  Use ZSTDv07_createDCtx() / ZSTDv07_freeDCtx() to manage it.
+  A ZSTDv07_DCtx object can be re-used multiple times.
+
+  First optional operation is to retrieve frame parameters, using ZSTDv07_getFrameParams(), which doesn't consume the input.
+  It can provide the minimum size of rolling buffer required to properly decompress data (`windowSize`),
+  and optionally the final size of uncompressed content.
+  (Note : content size is an optional info that may not be present. 0 means : content size unknown)
+  Frame parameters are extracted from the beginning of compressed frame.
+  The amount of data to read is variable, from ZSTDv07_frameHeaderSize_min to ZSTDv07_frameHeaderSize_max (so if `srcSize` >= ZSTDv07_frameHeaderSize_max, it will always work)
+  If `srcSize` is too small for operation to succeed, function will return the minimum size it requires to produce a result.
+  Result : 0 when successful, it means the ZSTDv07_frameParams structure has been filled.
+          >0 : means there is not enough data into `src`. Provides the expected size to successfully decode header.
+           errorCode, which can be tested using ZSTDv07_isError()
+
+  Start decompression, with ZSTDv07_decompressBegin() or ZSTDv07_decompressBegin_usingDict().
+  Alternatively, you can copy a prepared context, using ZSTDv07_copyDCtx().
+
+  Then use ZSTDv07_nextSrcSizeToDecompress() and ZSTDv07_decompressContinue() alternatively.
+  ZSTDv07_nextSrcSizeToDecompress() tells how much bytes to provide as 'srcSize' to ZSTDv07_decompressContinue().
+  ZSTDv07_decompressContinue() requires this exact amount of bytes, or it will fail.
+
+  @result of ZSTDv07_decompressContinue() is the number of bytes regenerated within 'dst' (necessarily <= dstCapacity).
+  It can be zero, which is not an error; it just means ZSTDv07_decompressContinue() has decoded some header.
+
+  ZSTDv07_decompressContinue() needs previous data blocks during decompression, up to `windowSize`.
+  They should preferably be located contiguously, prior to current block.
+  Alternatively, a round buffer of sufficient size is also possible. Sufficient size is determined by frame parameters.
+  ZSTDv07_decompressContinue() is very sensitive to contiguity,
+  if 2 blocks don't follow each other, make sure that either the compressor breaks contiguity at the same place,
+    or that previous contiguous segment is large enough to properly handle maximum back-reference.
+
+  A frame is fully decoded when ZSTDv07_nextSrcSizeToDecompress() returns zero.
+  Context can then be reset to start a new decompression.
+
+
+  == Special case : skippable frames ==
+
+  Skippable frames allow the integration of user-defined data into a flow of concatenated frames.
+  Skippable frames will be ignored (skipped) by a decompressor. The format of skippable frame is following:
+  a) Skippable frame ID - 4 Bytes, Little endian format, any value from 0x184D2A50 to 0x184D2A5F
+  b) Frame Size - 4 Bytes, Little endian format, unsigned 32-bits
+  c) Frame Content - any content (User Data) of length equal to Frame Size
+  For skippable frames ZSTDv07_decompressContinue() always returns 0.
+  For skippable frames ZSTDv07_getFrameParams() returns fparamsPtr->windowLog==0 what means that a frame is skippable.
+  It also returns Frame Size as fparamsPtr->frameContentSize.
+*/
+
+
+/* **************************************
+*  Block functions
+****************************************/
+/*! Block functions produce and decode raw zstd blocks, without frame metadata.
+    Frame metadata cost is typically ~18 bytes, which can be non-negligible for very small blocks (< 100 bytes).
+    User will have to take in charge required information to regenerate data, such as compressed and content sizes.
+
+    A few rules to respect :
+    - Compressing and decompressing require a context structure
+      + Use ZSTDv07_createCCtx() and ZSTDv07_createDCtx()
+    - It is necessary to init context before starting
+      + compression : ZSTDv07_compressBegin()
+      + decompression : ZSTDv07_decompressBegin()
+      + variants _usingDict() are also allowed
+      + copyCCtx() and copyDCtx() work too
+    - Block size is limited, it must be <= ZSTDv07_getBlockSizeMax()
+      + If you need to compress more, cut data into multiple blocks
+      + Consider using the regular ZSTDv07_compress() instead, as frame metadata costs become negligible when source size is large.
+    - When a block is considered not compressible enough, ZSTDv07_compressBlock() result will be zero.
+      In which case, nothing is produced into `dst`.
+      + User must test for such outcome and deal directly with uncompressed data
+      + ZSTDv07_decompressBlock() doesn't accept uncompressed data as input !!!
+      + In case of multiple successive blocks, decoder must be informed of uncompressed block existence to follow proper history.
+        Use ZSTDv07_insertBlock() in such a case.
+*/
+
+#define ZSTDv07_BLOCKSIZE_ABSOLUTEMAX (128 * 1024)   /* define, for static allocation */
+ZSTDLIB_API size_t ZSTDv07_decompressBlock(ZSTDv07_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+ZSTDLIB_API size_t ZSTDv07_insertBlock(ZSTDv07_DCtx* dctx, const void* blockStart, size_t blockSize);  /**< insert block into `dctx` history. Useful for uncompressed blocks */
+
+
+#endif   /* ZSTDv07_STATIC_LINKING_ONLY */
+
+
+/* ******************************************************************
+   mem.h
+   low-level memory access routines
+   Copyright (C) 2013-2015, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - FSE source repository : https://github.com/Cyan4973/FiniteStateEntropy
+    - Public forum : https://groups.google.com/forum/#!forum/lz4c
+****************************************************************** */
+#ifndef MEM_H_MODULE
+#define MEM_H_MODULE
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+/*-****************************************
+*  Compiler specifics
+******************************************/
+#if defined(_MSC_VER)   /* Visual Studio */
+#   include <stdlib.h>  /* _byteswap_ulong */
+#   include <intrin.h>  /* _byteswap_* */
+#endif
+#if defined(__GNUC__)
+#  define MEM_STATIC static __attribute__((unused))
+#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
+#  define MEM_STATIC static inline
+#elif defined(_MSC_VER)
+#  define MEM_STATIC static __inline
+#else
+#  define MEM_STATIC static  /* this version may generate warnings for unused static functions; disable the relevant warning */
+#endif
+
+/* code only tested on 32 and 64 bits systems */
+#define MEM_STATIC_ASSERT(c)   { enum { XXH_static_assert = 1/(int)(!!(c)) }; }
+MEM_STATIC void MEM_check(void) { MEM_STATIC_ASSERT((sizeof(size_t)==4) || (sizeof(size_t)==8)); }
+
+
+/*-**************************************************************
+*  Basic Types
+*****************************************************************/
+#if  !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
+# include <stdint.h>
+  typedef  uint8_t BYTE;
+  typedef uint16_t U16;
+  typedef  int16_t S16;
+  typedef uint32_t U32;
+  typedef  int32_t S32;
+  typedef uint64_t U64;
+  typedef  int64_t S64;
+#else
+  typedef unsigned char       BYTE;
+  typedef unsigned short      U16;
+  typedef   signed short      S16;
+  typedef unsigned int        U32;
+  typedef   signed int        S32;
+  typedef unsigned long long  U64;
+  typedef   signed long long  S64;
+#endif
+
+
+/*-**************************************************************
+*  Memory I/O
+*****************************************************************/
+/* MEM_FORCE_MEMORY_ACCESS :
+ * By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable.
+ * Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal.
+ * The below switch allow to select different access method for improved performance.
+ * Method 0 (default) : use `memcpy()`. Safe and portable.
+ * Method 1 : `__packed` statement. It depends on compiler extension (ie, not portable).
+ *            This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`.
+ * Method 2 : direct access. This method is portable but violate C standard.
+ *            It can generate buggy code on targets depending on alignment.
+ *            In some circumstances, it's the only known way to get the most performance (ie GCC + ARMv6)
+ * See http://fastcompression.blogspot.fr/2015/08/accessing-unaligned-memory.html for details.
+ * Prefer these methods in priority order (0 > 1 > 2)
+ */
+#ifndef MEM_FORCE_MEMORY_ACCESS   /* can be defined externally, on command line for example */
+#  if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
+#    define MEM_FORCE_MEMORY_ACCESS 2
+#  elif defined(__INTEL_COMPILER) || \
+  (defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
+#    define MEM_FORCE_MEMORY_ACCESS 1
+#  endif
+#endif
+
+MEM_STATIC unsigned MEM_32bits(void) { return sizeof(size_t)==4; }
+MEM_STATIC unsigned MEM_64bits(void) { return sizeof(size_t)==8; }
+
+MEM_STATIC unsigned MEM_isLittleEndian(void)
+{
+    const union { U32 u; BYTE c[4]; } one = { 1 };   /* don't use static : performance detrimental  */
+    return one.c[0];
+}
+
+#if defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==2)
+
+/* violates C standard, by lying on structure alignment.
+Only use if no other choice to achieve best performance on target platform */
+MEM_STATIC U16 MEM_read16(const void* memPtr) { return *(const U16*) memPtr; }
+MEM_STATIC U32 MEM_read32(const void* memPtr) { return *(const U32*) memPtr; }
+MEM_STATIC U64 MEM_read64(const void* memPtr) { return *(const U64*) memPtr; }
+MEM_STATIC U64 MEM_readST(const void* memPtr) { return *(const size_t*) memPtr; }
+
+MEM_STATIC void MEM_write16(void* memPtr, U16 value) { *(U16*)memPtr = value; }
+MEM_STATIC void MEM_write32(void* memPtr, U32 value) { *(U32*)memPtr = value; }
+MEM_STATIC void MEM_write64(void* memPtr, U64 value) { *(U64*)memPtr = value; }
+
+#elif defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==1)
+
+/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */
+/* currently only defined for gcc and icc */
+typedef union { U16 u16; U32 u32; U64 u64; size_t st; } __attribute__((packed)) unalign;
+
+MEM_STATIC U16 MEM_read16(const void* ptr) { return ((const unalign*)ptr)->u16; }
+MEM_STATIC U32 MEM_read32(const void* ptr) { return ((const unalign*)ptr)->u32; }
+MEM_STATIC U64 MEM_read64(const void* ptr) { return ((const unalign*)ptr)->u64; }
+MEM_STATIC U64 MEM_readST(const void* ptr) { return ((const unalign*)ptr)->st; }
+
+MEM_STATIC void MEM_write16(void* memPtr, U16 value) { ((unalign*)memPtr)->u16 = value; }
+MEM_STATIC void MEM_write32(void* memPtr, U32 value) { ((unalign*)memPtr)->u32 = value; }
+MEM_STATIC void MEM_write64(void* memPtr, U64 value) { ((unalign*)memPtr)->u64 = value; }
+
+#else
+
+/* default method, safe and standard.
+   can sometimes prove slower */
+
+MEM_STATIC U16 MEM_read16(const void* memPtr)
+{
+    U16 val; memcpy(&val, memPtr, sizeof(val)); return val;
+}
+
+MEM_STATIC U32 MEM_read32(const void* memPtr)
+{
+    U32 val; memcpy(&val, memPtr, sizeof(val)); return val;
+}
+
+MEM_STATIC U64 MEM_read64(const void* memPtr)
+{
+    U64 val; memcpy(&val, memPtr, sizeof(val)); return val;
+}
+
+MEM_STATIC size_t MEM_readST(const void* memPtr)
+{
+    size_t val; memcpy(&val, memPtr, sizeof(val)); return val;
+}
+
+MEM_STATIC void MEM_write16(void* memPtr, U16 value)
+{
+    memcpy(memPtr, &value, sizeof(value));
+}
+
+MEM_STATIC void MEM_write32(void* memPtr, U32 value)
+{
+    memcpy(memPtr, &value, sizeof(value));
+}
+
+MEM_STATIC void MEM_write64(void* memPtr, U64 value)
+{
+    memcpy(memPtr, &value, sizeof(value));
+}
+
+#endif /* MEM_FORCE_MEMORY_ACCESS */
+
+MEM_STATIC U32 MEM_swap32(U32 in)
+{
+#if defined(_MSC_VER)     /* Visual Studio */
+    return _byteswap_ulong(in);
+#elif defined (__GNUC__)
+    return __builtin_bswap32(in);
+#else
+    return  ((in << 24) & 0xff000000 ) |
+            ((in <<  8) & 0x00ff0000 ) |
+            ((in >>  8) & 0x0000ff00 ) |
+            ((in >> 24) & 0x000000ff );
+#endif
+}
+
+MEM_STATIC U64 MEM_swap64(U64 in)
+{
+#if defined(_MSC_VER)     /* Visual Studio */
+    return _byteswap_uint64(in);
+#elif defined (__GNUC__)
+    return __builtin_bswap64(in);
+#else
+    return  ((in << 56) & 0xff00000000000000ULL) |
+            ((in << 40) & 0x00ff000000000000ULL) |
+            ((in << 24) & 0x0000ff0000000000ULL) |
+            ((in << 8)  & 0x000000ff00000000ULL) |
+            ((in >> 8)  & 0x00000000ff000000ULL) |
+            ((in >> 24) & 0x0000000000ff0000ULL) |
+            ((in >> 40) & 0x000000000000ff00ULL) |
+            ((in >> 56) & 0x00000000000000ffULL);
+#endif
+}
+
+MEM_STATIC size_t MEM_swapST(size_t in)
+{
+    if (MEM_32bits())
+        return (size_t)MEM_swap32((U32)in);
+    else
+        return (size_t)MEM_swap64((U64)in);
+}
+
+/*=== Little endian r/w ===*/
+
+MEM_STATIC U16 MEM_readLE16(const void* memPtr)
+{
+    if (MEM_isLittleEndian())
+        return MEM_read16(memPtr);
+    else {
+        const BYTE* p = (const BYTE*)memPtr;
+        return (U16)(p[0] + (p[1]<<8));
+    }
+}
+
+MEM_STATIC void MEM_writeLE16(void* memPtr, U16 val)
+{
+    if (MEM_isLittleEndian()) {
+        MEM_write16(memPtr, val);
+    } else {
+        BYTE* p = (BYTE*)memPtr;
+        p[0] = (BYTE)val;
+        p[1] = (BYTE)(val>>8);
+    }
+}
+
+MEM_STATIC U32 MEM_readLE32(const void* memPtr)
+{
+    if (MEM_isLittleEndian())
+        return MEM_read32(memPtr);
+    else
+        return MEM_swap32(MEM_read32(memPtr));
+}
+
+MEM_STATIC void MEM_writeLE32(void* memPtr, U32 val32)
+{
+    if (MEM_isLittleEndian())
+        MEM_write32(memPtr, val32);
+    else
+        MEM_write32(memPtr, MEM_swap32(val32));
+}
+
+MEM_STATIC U64 MEM_readLE64(const void* memPtr)
+{
+    if (MEM_isLittleEndian())
+        return MEM_read64(memPtr);
+    else
+        return MEM_swap64(MEM_read64(memPtr));
+}
+
+MEM_STATIC void MEM_writeLE64(void* memPtr, U64 val64)
+{
+    if (MEM_isLittleEndian())
+        MEM_write64(memPtr, val64);
+    else
+        MEM_write64(memPtr, MEM_swap64(val64));
+}
+
+MEM_STATIC size_t MEM_readLEST(const void* memPtr)
+{
+    if (MEM_32bits())
+        return (size_t)MEM_readLE32(memPtr);
+    else
+        return (size_t)MEM_readLE64(memPtr);
+}
+
+MEM_STATIC void MEM_writeLEST(void* memPtr, size_t val)
+{
+    if (MEM_32bits())
+        MEM_writeLE32(memPtr, (U32)val);
+    else
+        MEM_writeLE64(memPtr, (U64)val);
+}
+
+/*=== Big endian r/w ===*/
+
+MEM_STATIC U32 MEM_readBE32(const void* memPtr)
+{
+    if (MEM_isLittleEndian())
+        return MEM_swap32(MEM_read32(memPtr));
+    else
+        return MEM_read32(memPtr);
+}
+
+MEM_STATIC void MEM_writeBE32(void* memPtr, U32 val32)
+{
+    if (MEM_isLittleEndian())
+        MEM_write32(memPtr, MEM_swap32(val32));
+    else
+        MEM_write32(memPtr, val32);
+}
+
+MEM_STATIC U64 MEM_readBE64(const void* memPtr)
+{
+    if (MEM_isLittleEndian())
+        return MEM_swap64(MEM_read64(memPtr));
+    else
+        return MEM_read64(memPtr);
+}
+
+MEM_STATIC void MEM_writeBE64(void* memPtr, U64 val64)
+{
+    if (MEM_isLittleEndian())
+        MEM_write64(memPtr, MEM_swap64(val64));
+    else
+        MEM_write64(memPtr, val64);
+}
+
+MEM_STATIC size_t MEM_readBEST(const void* memPtr)
+{
+    if (MEM_32bits())
+        return (size_t)MEM_readBE32(memPtr);
+    else
+        return (size_t)MEM_readBE64(memPtr);
+}
+
+MEM_STATIC void MEM_writeBEST(void* memPtr, size_t val)
+{
+    if (MEM_32bits())
+        MEM_writeBE32(memPtr, (U32)val);
+    else
+        MEM_writeBE64(memPtr, (U64)val);
+}
+
+
+/* function safe only for comparisons */
+MEM_STATIC U32 MEM_readMINMATCH(const void* memPtr, U32 length)
+{
+    switch (length)
+    {
+    default :
+    case 4 : return MEM_read32(memPtr);
+    case 3 : if (MEM_isLittleEndian())
+                return MEM_read32(memPtr)<<8;
+             else
+                return MEM_read32(memPtr)>>8;
+    }
+}
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif /* MEM_H_MODULE */
+
+/* ******************************************************************
+   Error codes list
+   Copyright (C) 2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+   You can contact the author at :
+   - Homepage : http://www.zstd.net
+****************************************************************** */
+#ifndef ERROR_PUBLIC_H_MODULE
+#define ERROR_PUBLIC_H_MODULE
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+/* ****************************************
+*  error codes list
+******************************************/
+typedef enum {
+  ZSTDv07_error_no_error,
+  ZSTDv07_error_GENERIC,
+  ZSTDv07_error_prefix_unknown,
+  ZSTDv07_error_frameParameter_unsupported,
+  ZSTDv07_error_frameParameter_unsupportedBy32bits,
+  ZSTDv07_error_compressionParameter_unsupported,
+  ZSTDv07_error_init_missing,
+  ZSTDv07_error_memory_allocation,
+  ZSTDv07_error_stage_wrong,
+  ZSTDv07_error_dstSize_tooSmall,
+  ZSTDv07_error_srcSize_wrong,
+  ZSTDv07_error_corruption_detected,
+  ZSTDv07_error_checksum_wrong,
+  ZSTDv07_error_tableLog_tooLarge,
+  ZSTDv07_error_maxSymbolValue_tooLarge,
+  ZSTDv07_error_maxSymbolValue_tooSmall,
+  ZSTDv07_error_dictionary_corrupted,
+  ZSTDv07_error_dictionary_wrong,
+  ZSTDv07_error_maxCode
+} ZSTDv07_ErrorCode;
+
+/*! ZSTDv07_getErrorCode() :
+    convert a `size_t` function result into a `ZSTDv07_ErrorCode` enum type,
+    which can be used to compare directly with enum list published into "error_public.h" */
+ZSTDv07_ErrorCode ZSTDv07_getErrorCode(size_t functionResult);
+const char* ZSTDv07_getErrorString(ZSTDv07_ErrorCode code);
+
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif /* ERROR_PUBLIC_H_MODULE */
+/* ******************************************************************
+   Error codes and messages
+   Copyright (C) 2013-2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+   You can contact the author at :
+   - Homepage : http://www.zstd.net
+****************************************************************** */
+/* Note : this module is expected to remain private, do not expose it */
+
+#ifndef ERROR_H_MODULE
+#define ERROR_H_MODULE
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+
+/* ****************************************
+*  Compiler-specific
+******************************************/
+#if defined(__GNUC__)
+#  define ERR_STATIC static __attribute__((unused))
+#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
+#  define ERR_STATIC static inline
+#elif defined(_MSC_VER)
+#  define ERR_STATIC static __inline
+#else
+#  define ERR_STATIC static  /* this version may generate warnings for unused static functions; disable the relevant warning */
+#endif
+
+
+/*-****************************************
+*  Customization (error_public.h)
+******************************************/
+typedef ZSTDv07_ErrorCode ERR_enum;
+#define PREFIX(name) ZSTDv07_error_##name
+
+
+/*-****************************************
+*  Error codes handling
+******************************************/
+#ifdef ERROR
+#  undef ERROR   /* reported already defined on VS 2015 (Rich Geldreich) */
+#endif
+#define ERROR(name) ((size_t)-PREFIX(name))
+
+ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); }
+
+ERR_STATIC ERR_enum ERR_getErrorCode(size_t code) { if (!ERR_isError(code)) return (ERR_enum)0; return (ERR_enum) (0-code); }
+
+
+/*-****************************************
+*  Error Strings
+******************************************/
+
+ERR_STATIC const char* ERR_getErrorString(ERR_enum code)
+{
+    static const char* notErrorCode = "Unspecified error code";
+    switch( code )
+    {
+    case PREFIX(no_error): return "No error detected";
+    case PREFIX(GENERIC):  return "Error (generic)";
+    case PREFIX(prefix_unknown): return "Unknown frame descriptor";
+    case PREFIX(frameParameter_unsupported): return "Unsupported frame parameter";
+    case PREFIX(frameParameter_unsupportedBy32bits): return "Frame parameter unsupported in 32-bits mode";
+    case PREFIX(compressionParameter_unsupported): return "Compression parameter is out of bound";
+    case PREFIX(init_missing): return "Context should be init first";
+    case PREFIX(memory_allocation): return "Allocation error : not enough memory";
+    case PREFIX(stage_wrong): return "Operation not authorized at current processing stage";
+    case PREFIX(dstSize_tooSmall): return "Destination buffer is too small";
+    case PREFIX(srcSize_wrong): return "Src size incorrect";
+    case PREFIX(corruption_detected): return "Corrupted block detected";
+    case PREFIX(checksum_wrong): return "Restored data doesn't match checksum";
+    case PREFIX(tableLog_tooLarge): return "tableLog requires too much memory : unsupported";
+    case PREFIX(maxSymbolValue_tooLarge): return "Unsupported max Symbol Value : too large";
+    case PREFIX(maxSymbolValue_tooSmall): return "Specified maxSymbolValue is too small";
+    case PREFIX(dictionary_corrupted): return "Dictionary is corrupted";
+    case PREFIX(dictionary_wrong): return "Dictionary mismatch";
+    case PREFIX(maxCode):
+    default: return notErrorCode;
+    }
+}
+
+ERR_STATIC const char* ERR_getErrorName(size_t code)
+{
+    return ERR_getErrorString(ERR_getErrorCode(code));
+}
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif /* ERROR_H_MODULE */
+/* ******************************************************************
+   bitstream
+   Part of FSE library
+   header file (to include)
+   Copyright (C) 2013-2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+   You can contact the author at :
+   - Source repository : https://github.com/Cyan4973/FiniteStateEntropy
+****************************************************************** */
+#ifndef BITSTREAM_H_MODULE
+#define BITSTREAM_H_MODULE
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+/*
+*  This API consists of small unitary functions, which must be inlined for best performance.
+*  Since link-time-optimization is not available for all compilers,
+*  these functions are defined into a .h to be included.
+*/
+
+
+/*=========================================
+*  Target specific
+=========================================*/
+#if defined(__BMI__) && defined(__GNUC__)
+#  include <immintrin.h>   /* support for bextr (experimental) */
+#endif
+
+/*-********************************************
+*  bitStream decoding API (read backward)
+**********************************************/
+typedef struct
+{
+    size_t   bitContainer;
+    unsigned bitsConsumed;
+    const char* ptr;
+    const char* start;
+} BITv07_DStream_t;
+
+typedef enum { BITv07_DStream_unfinished = 0,
+               BITv07_DStream_endOfBuffer = 1,
+               BITv07_DStream_completed = 2,
+               BITv07_DStream_overflow = 3 } BITv07_DStream_status;  /* result of BITv07_reloadDStream() */
+               /* 1,2,4,8 would be better for bitmap combinations, but slows down performance a bit ... :( */
+
+MEM_STATIC size_t   BITv07_initDStream(BITv07_DStream_t* bitD, const void* srcBuffer, size_t srcSize);
+MEM_STATIC size_t   BITv07_readBits(BITv07_DStream_t* bitD, unsigned nbBits);
+MEM_STATIC BITv07_DStream_status BITv07_reloadDStream(BITv07_DStream_t* bitD);
+MEM_STATIC unsigned BITv07_endOfDStream(const BITv07_DStream_t* bitD);
+
+
+/* Start by invoking BITv07_initDStream().
+*  A chunk of the bitStream is then stored into a local register.
+*  Local register size is 64-bits on 64-bits systems, 32-bits on 32-bits systems (size_t).
+*  You can then retrieve bitFields stored into the local register, **in reverse order**.
+*  Local register is explicitly reloaded from memory by the BITv07_reloadDStream() method.
+*  A reload guarantee a minimum of ((8*sizeof(bitD->bitContainer))-7) bits when its result is BITv07_DStream_unfinished.
+*  Otherwise, it can be less than that, so proceed accordingly.
+*  Checking if DStream has reached its end can be performed with BITv07_endOfDStream().
+*/
+
+
+/*-****************************************
+*  unsafe API
+******************************************/
+MEM_STATIC size_t BITv07_readBitsFast(BITv07_DStream_t* bitD, unsigned nbBits);
+/* faster, but works only if nbBits >= 1 */
+
+
+
+/*-**************************************************************
+*  Internal functions
+****************************************************************/
+MEM_STATIC unsigned BITv07_highbit32 (register U32 val)
+{
+#   if defined(_MSC_VER)   /* Visual */
+    unsigned long r=0;
+    _BitScanReverse ( &r, val );
+    return (unsigned) r;
+#   elif defined(__GNUC__) && (__GNUC__ >= 3)   /* Use GCC Intrinsic */
+    return 31 - __builtin_clz (val);
+#   else   /* Software version */
+    static const unsigned DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 };
+    U32 v = val;
+    v |= v >> 1;
+    v |= v >> 2;
+    v |= v >> 4;
+    v |= v >> 8;
+    v |= v >> 16;
+    return DeBruijnClz[ (U32) (v * 0x07C4ACDDU) >> 27];
+#   endif
+}
+
+/*=====    Local Constants   =====*/
+static const unsigned BITv07_mask[] = { 0, 1, 3, 7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF, 0x1FFFF, 0x3FFFF, 0x7FFFF, 0xFFFFF, 0x1FFFFF, 0x3FFFFF, 0x7FFFFF,  0xFFFFFF, 0x1FFFFFF, 0x3FFFFFF };   /* up to 26 bits */
+
+
+/*-********************************************************
+* bitStream decoding
+**********************************************************/
+/*! BITv07_initDStream() :
+*   Initialize a BITv07_DStream_t.
+*   `bitD` : a pointer to an already allocated BITv07_DStream_t structure.
+*   `srcSize` must be the *exact* size of the bitStream, in bytes.
+*   @return : size of stream (== srcSize) or an errorCode if a problem is detected
+*/
+MEM_STATIC size_t BITv07_initDStream(BITv07_DStream_t* bitD, const void* srcBuffer, size_t srcSize)
+{
+    if (srcSize < 1) { memset(bitD, 0, sizeof(*bitD)); return ERROR(srcSize_wrong); }
+
+    if (srcSize >=  sizeof(bitD->bitContainer)) {  /* normal case */
+        bitD->start = (const char*)srcBuffer;
+        bitD->ptr   = (const char*)srcBuffer + srcSize - sizeof(bitD->bitContainer);
+        bitD->bitContainer = MEM_readLEST(bitD->ptr);
+        { BYTE const lastByte = ((const BYTE*)srcBuffer)[srcSize-1];
+          bitD->bitsConsumed = lastByte ? 8 - BITv07_highbit32(lastByte) : 0;
+          if (lastByte == 0) return ERROR(GENERIC); /* endMark not present */ }
+    } else {
+        bitD->start = (const char*)srcBuffer;
+        bitD->ptr   = bitD->start;
+        bitD->bitContainer = *(const BYTE*)(bitD->start);
+        switch(srcSize)
+        {
+            case 7: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[6]) << (sizeof(bitD->bitContainer)*8 - 16);
+            case 6: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[5]) << (sizeof(bitD->bitContainer)*8 - 24);
+            case 5: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[4]) << (sizeof(bitD->bitContainer)*8 - 32);
+            case 4: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[3]) << 24;
+            case 3: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[2]) << 16;
+            case 2: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[1]) <<  8;
+            default:;
+        }
+        { BYTE const lastByte = ((const BYTE*)srcBuffer)[srcSize-1];
+          bitD->bitsConsumed = lastByte ? 8 - BITv07_highbit32(lastByte) : 0;
+          if (lastByte == 0) return ERROR(GENERIC); /* endMark not present */ }
+        bitD->bitsConsumed += (U32)(sizeof(bitD->bitContainer) - srcSize)*8;
+    }
+
+    return srcSize;
+}
+
+MEM_STATIC size_t BITv07_getUpperBits(size_t bitContainer, U32 const start)
+{
+    return bitContainer >> start;
+}
+
+MEM_STATIC size_t BITv07_getMiddleBits(size_t bitContainer, U32 const start, U32 const nbBits)
+{
+#if defined(__BMI__) && defined(__GNUC__)   /* experimental */
+#  if defined(__x86_64__)
+    if (sizeof(bitContainer)==8)
+        return _bextr_u64(bitContainer, start, nbBits);
+    else
+#  endif
+        return _bextr_u32(bitContainer, start, nbBits);
+#else
+    return (bitContainer >> start) & BITv07_mask[nbBits];
+#endif
+}
+
+MEM_STATIC size_t BITv07_getLowerBits(size_t bitContainer, U32 const nbBits)
+{
+    return bitContainer & BITv07_mask[nbBits];
+}
+
+/*! BITv07_lookBits() :
+ *  Provides next n bits from local register.
+ *  local register is not modified.
+ *  On 32-bits, maxNbBits==24.
+ *  On 64-bits, maxNbBits==56.
+ *  @return : value extracted
+ */
+ MEM_STATIC size_t BITv07_lookBits(const BITv07_DStream_t* bitD, U32 nbBits)
+{
+#if defined(__BMI__) && defined(__GNUC__)   /* experimental; fails if bitD->bitsConsumed + nbBits > sizeof(bitD->bitContainer)*8 */
+    return BITv07_getMiddleBits(bitD->bitContainer, (sizeof(bitD->bitContainer)*8) - bitD->bitsConsumed - nbBits, nbBits);
+#else
+    U32 const bitMask = sizeof(bitD->bitContainer)*8 - 1;
+    return ((bitD->bitContainer << (bitD->bitsConsumed & bitMask)) >> 1) >> ((bitMask-nbBits) & bitMask);
+#endif
+}
+
+/*! BITv07_lookBitsFast() :
+*   unsafe version; only works only if nbBits >= 1 */
+MEM_STATIC size_t BITv07_lookBitsFast(const BITv07_DStream_t* bitD, U32 nbBits)
+{
+    U32 const bitMask = sizeof(bitD->bitContainer)*8 - 1;
+    return (bitD->bitContainer << (bitD->bitsConsumed & bitMask)) >> (((bitMask+1)-nbBits) & bitMask);
+}
+
+MEM_STATIC void BITv07_skipBits(BITv07_DStream_t* bitD, U32 nbBits)
+{
+    bitD->bitsConsumed += nbBits;
+}
+
+/*! BITv07_readBits() :
+ *  Read (consume) next n bits from local register and update.
+ *  Pay attention to not read more than nbBits contained into local register.
+ *  @return : extracted value.
+ */
+MEM_STATIC size_t BITv07_readBits(BITv07_DStream_t* bitD, U32 nbBits)
+{
+    size_t const value = BITv07_lookBits(bitD, nbBits);
+    BITv07_skipBits(bitD, nbBits);
+    return value;
+}
+
+/*! BITv07_readBitsFast() :
+*   unsafe version; only works only if nbBits >= 1 */
+MEM_STATIC size_t BITv07_readBitsFast(BITv07_DStream_t* bitD, U32 nbBits)
+{
+    size_t const value = BITv07_lookBitsFast(bitD, nbBits);
+    BITv07_skipBits(bitD, nbBits);
+    return value;
+}
+
+/*! BITv07_reloadDStream() :
+*   Refill `BITv07_DStream_t` from src buffer previously defined (see BITv07_initDStream() ).
+*   This function is safe, it guarantees it will not read beyond src buffer.
+*   @return : status of `BITv07_DStream_t` internal register.
+              if status == unfinished, internal register is filled with >= (sizeof(bitD->bitContainer)*8 - 7) bits */
+MEM_STATIC BITv07_DStream_status BITv07_reloadDStream(BITv07_DStream_t* bitD)
+{
+	if (bitD->bitsConsumed > (sizeof(bitD->bitContainer)*8))  /* should not happen => corruption detected */
+		return BITv07_DStream_overflow;
+
+    if (bitD->ptr >= bitD->start + sizeof(bitD->bitContainer)) {
+        bitD->ptr -= bitD->bitsConsumed >> 3;
+        bitD->bitsConsumed &= 7;
+        bitD->bitContainer = MEM_readLEST(bitD->ptr);
+        return BITv07_DStream_unfinished;
+    }
+    if (bitD->ptr == bitD->start) {
+        if (bitD->bitsConsumed < sizeof(bitD->bitContainer)*8) return BITv07_DStream_endOfBuffer;
+        return BITv07_DStream_completed;
+    }
+    {   U32 nbBytes = bitD->bitsConsumed >> 3;
+        BITv07_DStream_status result = BITv07_DStream_unfinished;
+        if (bitD->ptr - nbBytes < bitD->start) {
+            nbBytes = (U32)(bitD->ptr - bitD->start);  /* ptr > start */
+            result = BITv07_DStream_endOfBuffer;
+        }
+        bitD->ptr -= nbBytes;
+        bitD->bitsConsumed -= nbBytes*8;
+        bitD->bitContainer = MEM_readLEST(bitD->ptr);   /* reminder : srcSize > sizeof(bitD) */
+        return result;
+    }
+}
+
+/*! BITv07_endOfDStream() :
+*   @return Tells if DStream has exactly reached its end (all bits consumed).
+*/
+MEM_STATIC unsigned BITv07_endOfDStream(const BITv07_DStream_t* DStream)
+{
+    return ((DStream->ptr == DStream->start) && (DStream->bitsConsumed == sizeof(DStream->bitContainer)*8));
+}
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif /* BITSTREAM_H_MODULE */
+/* ******************************************************************
+   FSE : Finite State Entropy codec
+   Public Prototypes declaration
+   Copyright (C) 2013-2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+   You can contact the author at :
+   - Source repository : https://github.com/Cyan4973/FiniteStateEntropy
+****************************************************************** */
+#ifndef FSEv07_H
+#define FSEv07_H
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+
+/*-****************************************
+*  FSE simple functions
+******************************************/
+
+/*! FSEv07_decompress():
+    Decompress FSE data from buffer 'cSrc', of size 'cSrcSize',
+    into already allocated destination buffer 'dst', of size 'dstCapacity'.
+    @return : size of regenerated data (<= maxDstSize),
+              or an error code, which can be tested using FSEv07_isError() .
+
+    ** Important ** : FSEv07_decompress() does not decompress non-compressible nor RLE data !!!
+    Why ? : making this distinction requires a header.
+    Header management is intentionally delegated to the user layer, which can better manage special cases.
+*/
+size_t FSEv07_decompress(void* dst,  size_t dstCapacity,
+                const void* cSrc, size_t cSrcSize);
+
+
+/* Error Management */
+unsigned    FSEv07_isError(size_t code);        /* tells if a return value is an error code */
+const char* FSEv07_getErrorName(size_t code);   /* provides error code string (useful for debugging) */
+
+
+/*-*****************************************
+*  FSE detailed API
+******************************************/
+/*!
+FSEv07_decompress() does the following:
+1. read normalized counters with readNCount()
+2. build decoding table 'DTable' from normalized counters
+3. decode the data stream using decoding table 'DTable'
+
+The following API allows targeting specific sub-functions for advanced tasks.
+For example, it's possible to compress several blocks using the same 'CTable',
+or to save and provide normalized distribution using external method.
+*/
+
+
+/* *** DECOMPRESSION *** */
+
+/*! FSEv07_readNCount():
+    Read compactly saved 'normalizedCounter' from 'rBuffer'.
+    @return : size read from 'rBuffer',
+              or an errorCode, which can be tested using FSEv07_isError().
+              maxSymbolValuePtr[0] and tableLogPtr[0] will also be updated with their respective values */
+size_t FSEv07_readNCount (short* normalizedCounter, unsigned* maxSymbolValuePtr, unsigned* tableLogPtr, const void* rBuffer, size_t rBuffSize);
+
+/*! Constructor and Destructor of FSEv07_DTable.
+    Note that its size depends on 'tableLog' */
+typedef unsigned FSEv07_DTable;   /* don't allocate that. It's just a way to be more restrictive than void* */
+FSEv07_DTable* FSEv07_createDTable(unsigned tableLog);
+void        FSEv07_freeDTable(FSEv07_DTable* dt);
+
+/*! FSEv07_buildDTable():
+    Builds 'dt', which must be already allocated, using FSEv07_createDTable().
+    return : 0, or an errorCode, which can be tested using FSEv07_isError() */
+size_t FSEv07_buildDTable (FSEv07_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog);
+
+/*! FSEv07_decompress_usingDTable():
+    Decompress compressed source `cSrc` of size `cSrcSize` using `dt`
+    into `dst` which must be already allocated.
+    @return : size of regenerated data (necessarily <= `dstCapacity`),
+              or an errorCode, which can be tested using FSEv07_isError() */
+size_t FSEv07_decompress_usingDTable(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, const FSEv07_DTable* dt);
+
+/*!
+Tutorial :
+----------
+(Note : these functions only decompress FSE-compressed blocks.
+ If block is uncompressed, use memcpy() instead
+ If block is a single repeated byte, use memset() instead )
+
+The first step is to obtain the normalized frequencies of symbols.
+This can be performed by FSEv07_readNCount() if it was saved using FSEv07_writeNCount().
+'normalizedCounter' must be already allocated, and have at least 'maxSymbolValuePtr[0]+1' cells of signed short.
+In practice, that means it's necessary to know 'maxSymbolValue' beforehand,
+or size the table to handle worst case situations (typically 256).
+FSEv07_readNCount() will provide 'tableLog' and 'maxSymbolValue'.
+The result of FSEv07_readNCount() is the number of bytes read from 'rBuffer'.
+Note that 'rBufferSize' must be at least 4 bytes, even if useful information is less than that.
+If there is an error, the function will return an error code, which can be tested using FSEv07_isError().
+
+The next step is to build the decompression tables 'FSEv07_DTable' from 'normalizedCounter'.
+This is performed by the function FSEv07_buildDTable().
+The space required by 'FSEv07_DTable' must be already allocated using FSEv07_createDTable().
+If there is an error, the function will return an error code, which can be tested using FSEv07_isError().
+
+`FSEv07_DTable` can then be used to decompress `cSrc`, with FSEv07_decompress_usingDTable().
+`cSrcSize` must be strictly correct, otherwise decompression will fail.
+FSEv07_decompress_usingDTable() result will tell how many bytes were regenerated (<=`dstCapacity`).
+If there is an error, the function will return an error code, which can be tested using FSEv07_isError(). (ex: dst buffer too small)
+*/
+
+
+#ifdef FSEv07_STATIC_LINKING_ONLY
+
+
+/* *****************************************
+*  Static allocation
+*******************************************/
+/* FSE buffer bounds */
+#define FSEv07_NCOUNTBOUND 512
+#define FSEv07_BLOCKBOUND(size) (size + (size>>7))
+
+/* It is possible to statically allocate FSE CTable/DTable as a table of unsigned using below macros */
+#define FSEv07_DTABLE_SIZE_U32(maxTableLog)                   (1 + (1<<maxTableLog))
+
+
+/* *****************************************
+*  FSE advanced API
+*******************************************/
+size_t FSEv07_countFast(unsigned* count, unsigned* maxSymbolValuePtr, const void* src, size_t srcSize);
+/**< same as FSEv07_count(), but blindly trusts that all byte values within src are <= *maxSymbolValuePtr  */
+
+unsigned FSEv07_optimalTableLog_internal(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue, unsigned minus);
+/**< same as FSEv07_optimalTableLog(), which used `minus==2` */
+
+size_t FSEv07_buildDTable_raw (FSEv07_DTable* dt, unsigned nbBits);
+/**< build a fake FSEv07_DTable, designed to read an uncompressed bitstream where each symbol uses nbBits */
+
+size_t FSEv07_buildDTable_rle (FSEv07_DTable* dt, unsigned char symbolValue);
+/**< build a fake FSEv07_DTable, designed to always generate the same symbolValue */
+
+
+
+/* *****************************************
+*  FSE symbol decompression API
+*******************************************/
+typedef struct
+{
+    size_t      state;
+    const void* table;   /* precise table may vary, depending on U16 */
+} FSEv07_DState_t;
+
+
+static void     FSEv07_initDState(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD, const FSEv07_DTable* dt);
+
+static unsigned char FSEv07_decodeSymbol(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD);
+
+static unsigned FSEv07_endOfDState(const FSEv07_DState_t* DStatePtr);
+
+/**<
+Let's now decompose FSEv07_decompress_usingDTable() into its unitary components.
+You will decode FSE-encoded symbols from the bitStream,
+and also any other bitFields you put in, **in reverse order**.
+
+You will need a few variables to track your bitStream. They are :
+
+BITv07_DStream_t DStream;    // Stream context
+FSEv07_DState_t  DState;     // State context. Multiple ones are possible
+FSEv07_DTable*   DTablePtr;  // Decoding table, provided by FSEv07_buildDTable()
+
+The first thing to do is to init the bitStream.
+    errorCode = BITv07_initDStream(&DStream, srcBuffer, srcSize);
+
+You should then retrieve your initial state(s)
+(in reverse flushing order if you have several ones) :
+    errorCode = FSEv07_initDState(&DState, &DStream, DTablePtr);
+
+You can then decode your data, symbol after symbol.
+For information the maximum number of bits read by FSEv07_decodeSymbol() is 'tableLog'.
+Keep in mind that symbols are decoded in reverse order, like a LIFO stack (last in, first out).
+    unsigned char symbol = FSEv07_decodeSymbol(&DState, &DStream);
+
+You can retrieve any bitfield you eventually stored into the bitStream (in reverse order)
+Note : maximum allowed nbBits is 25, for 32-bits compatibility
+    size_t bitField = BITv07_readBits(&DStream, nbBits);
+
+All above operations only read from local register (which size depends on size_t).
+Refueling the register from memory is manually performed by the reload method.
+    endSignal = FSEv07_reloadDStream(&DStream);
+
+BITv07_reloadDStream() result tells if there is still some more data to read from DStream.
+BITv07_DStream_unfinished : there is still some data left into the DStream.
+BITv07_DStream_endOfBuffer : Dstream reached end of buffer. Its container may no longer be completely filled.
+BITv07_DStream_completed : Dstream reached its exact end, corresponding in general to decompression completed.
+BITv07_DStream_tooFar : Dstream went too far. Decompression result is corrupted.
+
+When reaching end of buffer (BITv07_DStream_endOfBuffer), progress slowly, notably if you decode multiple symbols per loop,
+to properly detect the exact end of stream.
+After each decoded symbol, check if DStream is fully consumed using this simple test :
+    BITv07_reloadDStream(&DStream) >= BITv07_DStream_completed
+
+When it's done, verify decompression is fully completed, by checking both DStream and the relevant states.
+Checking if DStream has reached its end is performed by :
+    BITv07_endOfDStream(&DStream);
+Check also the states. There might be some symbols left there, if some high probability ones (>50%) are possible.
+    FSEv07_endOfDState(&DState);
+*/
+
+
+/* *****************************************
+*  FSE unsafe API
+*******************************************/
+static unsigned char FSEv07_decodeSymbolFast(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD);
+/* faster, but works only if nbBits is always >= 1 (otherwise, result will be corrupted) */
+
+
+/*<=====    Decompression    =====>*/
+
+typedef struct {
+    U16 tableLog;
+    U16 fastMode;
+} FSEv07_DTableHeader;   /* sizeof U32 */
+
+typedef struct
+{
+    unsigned short newState;
+    unsigned char  symbol;
+    unsigned char  nbBits;
+} FSEv07_decode_t;   /* size == U32 */
+
+MEM_STATIC void FSEv07_initDState(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD, const FSEv07_DTable* dt)
+{
+    const void* ptr = dt;
+    const FSEv07_DTableHeader* const DTableH = (const FSEv07_DTableHeader*)ptr;
+    DStatePtr->state = BITv07_readBits(bitD, DTableH->tableLog);
+    BITv07_reloadDStream(bitD);
+    DStatePtr->table = dt + 1;
+}
+
+MEM_STATIC BYTE FSEv07_peekSymbol(const FSEv07_DState_t* DStatePtr)
+{
+    FSEv07_decode_t const DInfo = ((const FSEv07_decode_t*)(DStatePtr->table))[DStatePtr->state];
+    return DInfo.symbol;
+}
+
+MEM_STATIC void FSEv07_updateState(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD)
+{
+    FSEv07_decode_t const DInfo = ((const FSEv07_decode_t*)(DStatePtr->table))[DStatePtr->state];
+    U32 const nbBits = DInfo.nbBits;
+    size_t const lowBits = BITv07_readBits(bitD, nbBits);
+    DStatePtr->state = DInfo.newState + lowBits;
+}
+
+MEM_STATIC BYTE FSEv07_decodeSymbol(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD)
+{
+    FSEv07_decode_t const DInfo = ((const FSEv07_decode_t*)(DStatePtr->table))[DStatePtr->state];
+    U32 const nbBits = DInfo.nbBits;
+    BYTE const symbol = DInfo.symbol;
+    size_t const lowBits = BITv07_readBits(bitD, nbBits);
+
+    DStatePtr->state = DInfo.newState + lowBits;
+    return symbol;
+}
+
+/*! FSEv07_decodeSymbolFast() :
+    unsafe, only works if no symbol has a probability > 50% */
+MEM_STATIC BYTE FSEv07_decodeSymbolFast(FSEv07_DState_t* DStatePtr, BITv07_DStream_t* bitD)
+{
+    FSEv07_decode_t const DInfo = ((const FSEv07_decode_t*)(DStatePtr->table))[DStatePtr->state];
+    U32 const nbBits = DInfo.nbBits;
+    BYTE const symbol = DInfo.symbol;
+    size_t const lowBits = BITv07_readBitsFast(bitD, nbBits);
+
+    DStatePtr->state = DInfo.newState + lowBits;
+    return symbol;
+}
+
+MEM_STATIC unsigned FSEv07_endOfDState(const FSEv07_DState_t* DStatePtr)
+{
+    return DStatePtr->state == 0;
+}
+
+
+
+#ifndef FSEv07_COMMONDEFS_ONLY
+
+/* **************************************************************
+*  Tuning parameters
+****************************************************************/
+/*!MEMORY_USAGE :
+*  Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
+*  Increasing memory usage improves compression ratio
+*  Reduced memory usage can improve speed, due to cache effect
+*  Recommended max value is 14, for 16KB, which nicely fits into Intel x86 L1 cache */
+#define FSEv07_MAX_MEMORY_USAGE 14
+#define FSEv07_DEFAULT_MEMORY_USAGE 13
+
+/*!FSEv07_MAX_SYMBOL_VALUE :
+*  Maximum symbol value authorized.
+*  Required for proper stack allocation */
+#define FSEv07_MAX_SYMBOL_VALUE 255
+
+
+/* **************************************************************
+*  template functions type & suffix
+****************************************************************/
+#define FSEv07_FUNCTION_TYPE BYTE
+#define FSEv07_FUNCTION_EXTENSION
+#define FSEv07_DECODE_TYPE FSEv07_decode_t
+
+
+#endif   /* !FSEv07_COMMONDEFS_ONLY */
+
+
+/* ***************************************************************
+*  Constants
+*****************************************************************/
+#define FSEv07_MAX_TABLELOG  (FSEv07_MAX_MEMORY_USAGE-2)
+#define FSEv07_MAX_TABLESIZE (1U<<FSEv07_MAX_TABLELOG)
+#define FSEv07_MAXTABLESIZE_MASK (FSEv07_MAX_TABLESIZE-1)
+#define FSEv07_DEFAULT_TABLELOG (FSEv07_DEFAULT_MEMORY_USAGE-2)
+#define FSEv07_MIN_TABLELOG 5
+
+#define FSEv07_TABLELOG_ABSOLUTE_MAX 15
+#if FSEv07_MAX_TABLELOG > FSEv07_TABLELOG_ABSOLUTE_MAX
+#  error "FSEv07_MAX_TABLELOG > FSEv07_TABLELOG_ABSOLUTE_MAX is not supported"
+#endif
+
+#define FSEv07_TABLESTEP(tableSize) ((tableSize>>1) + (tableSize>>3) + 3)
+
+
+#endif /* FSEv07_STATIC_LINKING_ONLY */
+
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif  /* FSEv07_H */
+/* ******************************************************************
+   Huffman coder, part of New Generation Entropy library
+   header file
+   Copyright (C) 2013-2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+   You can contact the author at :
+   - Source repository : https://github.com/Cyan4973/FiniteStateEntropy
+****************************************************************** */
+#ifndef HUFv07_H_298734234
+#define HUFv07_H_298734234
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+
+/* *** simple functions *** */
+/**
+HUFv07_decompress() :
+    Decompress HUF data from buffer 'cSrc', of size 'cSrcSize',
+    into already allocated buffer 'dst', of minimum size 'dstSize'.
+    `dstSize` : **must** be the ***exact*** size of original (uncompressed) data.
+    Note : in contrast with FSE, HUFv07_decompress can regenerate
+           RLE (cSrcSize==1) and uncompressed (cSrcSize==dstSize) data,
+           because it knows size to regenerate.
+    @return : size of regenerated data (== dstSize),
+              or an error code, which can be tested using HUFv07_isError()
+*/
+size_t HUFv07_decompress(void* dst,  size_t dstSize,
+                const void* cSrc, size_t cSrcSize);
+
+
+/* ****************************************
+*  Tool functions
+******************************************/
+#define HUFv07_BLOCKSIZE_MAX (128 * 1024)
+
+/* Error Management */
+unsigned    HUFv07_isError(size_t code);        /**< tells if a return value is an error code */
+const char* HUFv07_getErrorName(size_t code);   /**< provides error code string (useful for debugging) */
+
+
+/* *** Advanced function *** */
+
+
+#ifdef HUFv07_STATIC_LINKING_ONLY
+
+
+/* *** Constants *** */
+#define HUFv07_TABLELOG_ABSOLUTEMAX  16   /* absolute limit of HUFv07_MAX_TABLELOG. Beyond that value, code does not work */
+#define HUFv07_TABLELOG_MAX  12           /* max configured tableLog (for static allocation); can be modified up to HUFv07_ABSOLUTEMAX_TABLELOG */
+#define HUFv07_TABLELOG_DEFAULT  11       /* tableLog by default, when not specified */
+#define HUFv07_SYMBOLVALUE_MAX 255
+#if (HUFv07_TABLELOG_MAX > HUFv07_TABLELOG_ABSOLUTEMAX)
+#  error "HUFv07_TABLELOG_MAX is too large !"
+#endif
+
+
+/* ****************************************
+*  Static allocation
+******************************************/
+/* HUF buffer bounds */
+#define HUFv07_BLOCKBOUND(size) (size + (size>>8) + 8)   /* only true if incompressible pre-filtered with fast heuristic */
+
+/* static allocation of HUF's DTable */
+typedef U32 HUFv07_DTable;
+#define HUFv07_DTABLE_SIZE(maxTableLog)   (1 + (1<<(maxTableLog)))
+#define HUFv07_CREATE_STATIC_DTABLEX2(DTable, maxTableLog) \
+        HUFv07_DTable DTable[HUFv07_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1)*0x1000001) }
+#define HUFv07_CREATE_STATIC_DTABLEX4(DTable, maxTableLog) \
+        HUFv07_DTable DTable[HUFv07_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog)*0x1000001) }
+
+
+/* ****************************************
+*  Advanced decompression functions
+******************************************/
+size_t HUFv07_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< single-symbol decoder */
+size_t HUFv07_decompress4X4 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< double-symbols decoder */
+
+size_t HUFv07_decompress4X_DCtx (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< decodes RLE and uncompressed */
+size_t HUFv07_decompress4X_hufOnly(HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< considers RLE and uncompressed as errors */
+size_t HUFv07_decompress4X2_DCtx(HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< single-symbol decoder */
+size_t HUFv07_decompress4X4_DCtx(HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< double-symbols decoder */
+
+size_t HUFv07_decompress1X_DCtx (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);
+size_t HUFv07_decompress1X2_DCtx(HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< single-symbol decoder */
+size_t HUFv07_decompress1X4_DCtx(HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /**< double-symbols decoder */
+
+
+/* ****************************************
+*  HUF detailed API
+******************************************/
+/*!
+The following API allows targeting specific sub-functions for advanced tasks.
+For example, it's possible to compress several blocks using the same 'CTable',
+or to save and regenerate 'CTable' using external methods.
+*/
+/* FSEv07_count() : find it within "fse.h" */
+
+/*! HUFv07_readStats() :
+    Read compact Huffman tree, saved by HUFv07_writeCTable().
+    `huffWeight` is destination buffer.
+    @return : size read from `src` , or an error Code .
+    Note : Needed by HUFv07_readCTable() and HUFv07_readDTableXn() . */
+size_t HUFv07_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
+                     U32* nbSymbolsPtr, U32* tableLogPtr,
+                     const void* src, size_t srcSize);
+
+
+/*
+HUFv07_decompress() does the following:
+1. select the decompression algorithm (X2, X4) based on pre-computed heuristics
+2. build Huffman table from save, using HUFv07_readDTableXn()
+3. decode 1 or 4 segments in parallel using HUFv07_decompressSXn_usingDTable
+*/
+
+/** HUFv07_selectDecoder() :
+*   Tells which decoder is likely to decode faster,
+*   based on a set of pre-determined metrics.
+*   @return : 0==HUFv07_decompress4X2, 1==HUFv07_decompress4X4 .
+*   Assumption : 0 < cSrcSize < dstSize <= 128 KB */
+U32 HUFv07_selectDecoder (size_t dstSize, size_t cSrcSize);
+
+size_t HUFv07_readDTableX2 (HUFv07_DTable* DTable, const void* src, size_t srcSize);
+size_t HUFv07_readDTableX4 (HUFv07_DTable* DTable, const void* src, size_t srcSize);
+
+size_t HUFv07_decompress4X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUFv07_DTable* DTable);
+size_t HUFv07_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUFv07_DTable* DTable);
+size_t HUFv07_decompress4X4_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUFv07_DTable* DTable);
+
+
+/* single stream variants */
+size_t HUFv07_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* single-symbol decoder */
+size_t HUFv07_decompress1X4 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* double-symbol decoder */
+
+size_t HUFv07_decompress1X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUFv07_DTable* DTable);
+size_t HUFv07_decompress1X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUFv07_DTable* DTable);
+size_t HUFv07_decompress1X4_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUFv07_DTable* DTable);
+
+
+#endif /* HUFv07_STATIC_LINKING_ONLY */
+
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif   /* HUFv07_H_298734234 */
+/*
+   Common functions of New Generation Entropy library
+   Copyright (C) 2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - FSE+HUF source repository : https://github.com/Cyan4973/FiniteStateEntropy
+    - Public forum : https://groups.google.com/forum/#!forum/lz4c
+*************************************************************************** */
+
+
+
+/*-****************************************
+*  FSE Error Management
+******************************************/
+unsigned FSEv07_isError(size_t code) { return ERR_isError(code); }
+
+const char* FSEv07_getErrorName(size_t code) { return ERR_getErrorName(code); }
+
+
+/* **************************************************************
+*  HUF Error Management
+****************************************************************/
+unsigned HUFv07_isError(size_t code) { return ERR_isError(code); }
+
+const char* HUFv07_getErrorName(size_t code) { return ERR_getErrorName(code); }
+
+
+/*-**************************************************************
+*  FSE NCount encoding-decoding
+****************************************************************/
+static short FSEv07_abs(short a) { return (short)(a<0 ? -a : a); }
+
+size_t FSEv07_readNCount (short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr,
+                 const void* headerBuffer, size_t hbSize)
+{
+    const BYTE* const istart = (const BYTE*) headerBuffer;
+    const BYTE* const iend = istart + hbSize;
+    const BYTE* ip = istart;
+    int nbBits;
+    int remaining;
+    int threshold;
+    U32 bitStream;
+    int bitCount;
+    unsigned charnum = 0;
+    int previous0 = 0;
+
+    if (hbSize < 4) return ERROR(srcSize_wrong);
+    bitStream = MEM_readLE32(ip);
+    nbBits = (bitStream & 0xF) + FSEv07_MIN_TABLELOG;   /* extract tableLog */
+    if (nbBits > FSEv07_TABLELOG_ABSOLUTE_MAX) return ERROR(tableLog_tooLarge);
+    bitStream >>= 4;
+    bitCount = 4;
+    *tableLogPtr = nbBits;
+    remaining = (1<<nbBits)+1;
+    threshold = 1<<nbBits;
+    nbBits++;
+
+    while ((remaining>1) && (charnum<=*maxSVPtr)) {
+        if (previous0) {
+            unsigned n0 = charnum;
+            while ((bitStream & 0xFFFF) == 0xFFFF) {
+                n0+=24;
+                if (ip < iend-5) {
+                    ip+=2;
+                    bitStream = MEM_readLE32(ip) >> bitCount;
+                } else {
+                    bitStream >>= 16;
+                    bitCount+=16;
+            }   }
+            while ((bitStream & 3) == 3) {
+                n0+=3;
+                bitStream>>=2;
+                bitCount+=2;
+            }
+            n0 += bitStream & 3;
+            bitCount += 2;
+            if (n0 > *maxSVPtr) return ERROR(maxSymbolValue_tooSmall);
+            while (charnum < n0) normalizedCounter[charnum++] = 0;
+            if ((ip <= iend-7) || (ip + (bitCount>>3) <= iend-4)) {
+                ip += bitCount>>3;
+                bitCount &= 7;
+                bitStream = MEM_readLE32(ip) >> bitCount;
+            }
+            else
+                bitStream >>= 2;
+        }
+        {   short const max = (short)((2*threshold-1)-remaining);
+            short count;
+
+            if ((bitStream & (threshold-1)) < (U32)max) {
+                count = (short)(bitStream & (threshold-1));
+                bitCount   += nbBits-1;
+            } else {
+                count = (short)(bitStream & (2*threshold-1));
+                if (count >= threshold) count -= max;
+                bitCount   += nbBits;
+            }
+
+            count--;   /* extra accuracy */
+            remaining -= FSEv07_abs(count);
+            normalizedCounter[charnum++] = count;
+            previous0 = !count;
+            while (remaining < threshold) {
+                nbBits--;
+                threshold >>= 1;
+            }
+
+            if ((ip <= iend-7) || (ip + (bitCount>>3) <= iend-4)) {
+                ip += bitCount>>3;
+                bitCount &= 7;
+            } else {
+                bitCount -= (int)(8 * (iend - 4 - ip));
+                ip = iend - 4;
+            }
+            bitStream = MEM_readLE32(ip) >> (bitCount & 31);
+    }   }   /* while ((remaining>1) && (charnum<=*maxSVPtr)) */
+    if (remaining != 1) return ERROR(GENERIC);
+    *maxSVPtr = charnum-1;
+
+    ip += (bitCount+7)>>3;
+    if ((size_t)(ip-istart) > hbSize) return ERROR(srcSize_wrong);
+    return ip-istart;
+}
+
+
+/*! HUFv07_readStats() :
+    Read compact Huffman tree, saved by HUFv07_writeCTable().
+    `huffWeight` is destination buffer.
+    @return : size read from `src` , or an error Code .
+    Note : Needed by HUFv07_readCTable() and HUFv07_readDTableXn() .
+*/
+size_t HUFv07_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
+                     U32* nbSymbolsPtr, U32* tableLogPtr,
+                     const void* src, size_t srcSize)
+{
+    U32 weightTotal;
+    const BYTE* ip = (const BYTE*) src;
+    size_t iSize = ip[0];
+    size_t oSize;
+
+    //memset(huffWeight, 0, hwSize);   /* is not necessary, even though some analyzer complain ... */
+
+    if (iSize >= 128)  { /* special header */
+        if (iSize >= (242)) {  /* RLE */
+            static U32 l[14] = { 1, 2, 3, 4, 7, 8, 15, 16, 31, 32, 63, 64, 127, 128 };
+            oSize = l[iSize-242];
+            memset(huffWeight, 1, hwSize);
+            iSize = 0;
+        }
+        else {   /* Incompressible */
+            oSize = iSize - 127;
+            iSize = ((oSize+1)/2);
+            if (iSize+1 > srcSize) return ERROR(srcSize_wrong);
+            if (oSize >= hwSize) return ERROR(corruption_detected);
+            ip += 1;
+            {   U32 n;
+                for (n=0; n<oSize; n+=2) {
+                    huffWeight[n]   = ip[n/2] >> 4;
+                    huffWeight[n+1] = ip[n/2] & 15;
+    }   }   }   }
+    else  {   /* header compressed with FSE (normal case) */
+        if (iSize+1 > srcSize) return ERROR(srcSize_wrong);
+        oSize = FSEv07_decompress(huffWeight, hwSize-1, ip+1, iSize);   /* max (hwSize-1) values decoded, as last one is implied */
+        if (FSEv07_isError(oSize)) return oSize;
+    }
+
+    /* collect weight stats */
+    memset(rankStats, 0, (HUFv07_TABLELOG_ABSOLUTEMAX + 1) * sizeof(U32));
+    weightTotal = 0;
+    {   U32 n; for (n=0; n<oSize; n++) {
+            if (huffWeight[n] >= HUFv07_TABLELOG_ABSOLUTEMAX) return ERROR(corruption_detected);
+            rankStats[huffWeight[n]]++;
+            weightTotal += (1 << huffWeight[n]) >> 1;
+    }   }
+
+    /* get last non-null symbol weight (implied, total must be 2^n) */
+    {   U32 const tableLog = BITv07_highbit32(weightTotal) + 1;
+        if (tableLog > HUFv07_TABLELOG_ABSOLUTEMAX) return ERROR(corruption_detected);
+        *tableLogPtr = tableLog;
+        /* determine last weight */
+        {   U32 const total = 1 << tableLog;
+            U32 const rest = total - weightTotal;
+            U32 const verif = 1 << BITv07_highbit32(rest);
+            U32 const lastWeight = BITv07_highbit32(rest) + 1;
+            if (verif != rest) return ERROR(corruption_detected);    /* last value must be a clean power of 2 */
+            huffWeight[oSize] = (BYTE)lastWeight;
+            rankStats[lastWeight]++;
+    }   }
+
+    /* check tree construction validity */
+    if ((rankStats[1] < 2) || (rankStats[1] & 1)) return ERROR(corruption_detected);   /* by construction : at least 2 elts of rank 1, must be even */
+
+    /* results */
+    *nbSymbolsPtr = (U32)(oSize+1);
+    return iSize+1;
+}
+/* ******************************************************************
+   FSE : Finite State Entropy decoder
+   Copyright (C) 2013-2015, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - FSE source repository : https://github.com/Cyan4973/FiniteStateEntropy
+    - Public forum : https://groups.google.com/forum/#!forum/lz4c
+****************************************************************** */
+
+
+/* **************************************************************
+*  Compiler specifics
+****************************************************************/
+#ifdef _MSC_VER    /* Visual Studio */
+#  define FORCE_INLINE static __forceinline
+#  include <intrin.h>                    /* For Visual 2005 */
+#  pragma warning(disable : 4127)        /* disable: C4127: conditional expression is constant */
+#  pragma warning(disable : 4214)        /* disable: C4214: non-int bitfields */
+#else
+#  ifdef __GNUC__
+#    define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#    define FORCE_INLINE static inline __attribute__((always_inline))
+#  else
+#    define FORCE_INLINE static inline
+#  endif
+#endif
+
+
+
+
+/* **************************************************************
+*  Error Management
+****************************************************************/
+#define FSEv07_isError ERR_isError
+#define FSEv07_STATIC_ASSERT(c) { enum { FSEv07_static_assert = 1/(int)(!!(c)) }; }   /* use only *after* variable declarations */
+
+
+/* **************************************************************
+*  Complex types
+****************************************************************/
+typedef U32 DTable_max_t[FSEv07_DTABLE_SIZE_U32(FSEv07_MAX_TABLELOG)];
+
+
+/* **************************************************************
+*  Templates
+****************************************************************/
+/*
+  designed to be included
+  for type-specific functions (template emulation in C)
+  Objective is to write these functions only once, for improved maintenance
+*/
+
+/* safety checks */
+#ifndef FSEv07_FUNCTION_EXTENSION
+#  error "FSEv07_FUNCTION_EXTENSION must be defined"
+#endif
+#ifndef FSEv07_FUNCTION_TYPE
+#  error "FSEv07_FUNCTION_TYPE must be defined"
+#endif
+
+/* Function names */
+#define FSEv07_CAT(X,Y) X##Y
+#define FSEv07_FUNCTION_NAME(X,Y) FSEv07_CAT(X,Y)
+#define FSEv07_TYPE_NAME(X,Y) FSEv07_CAT(X,Y)
+
+
+/* Function templates */
+FSEv07_DTable* FSEv07_createDTable (unsigned tableLog)
+{
+    if (tableLog > FSEv07_TABLELOG_ABSOLUTE_MAX) tableLog = FSEv07_TABLELOG_ABSOLUTE_MAX;
+    return (FSEv07_DTable*)malloc( FSEv07_DTABLE_SIZE_U32(tableLog) * sizeof (U32) );
+}
+
+void FSEv07_freeDTable (FSEv07_DTable* dt)
+{
+    free(dt);
+}
+
+size_t FSEv07_buildDTable(FSEv07_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog)
+{
+    void* const tdPtr = dt+1;   /* because *dt is unsigned, 32-bits aligned on 32-bits */
+    FSEv07_DECODE_TYPE* const tableDecode = (FSEv07_DECODE_TYPE*) (tdPtr);
+    U16 symbolNext[FSEv07_MAX_SYMBOL_VALUE+1];
+
+    U32 const maxSV1 = maxSymbolValue + 1;
+    U32 const tableSize = 1 << tableLog;
+    U32 highThreshold = tableSize-1;
+
+    /* Sanity Checks */
+    if (maxSymbolValue > FSEv07_MAX_SYMBOL_VALUE) return ERROR(maxSymbolValue_tooLarge);
+    if (tableLog > FSEv07_MAX_TABLELOG) return ERROR(tableLog_tooLarge);
+
+    /* Init, lay down lowprob symbols */
+    {   FSEv07_DTableHeader DTableH;
+        DTableH.tableLog = (U16)tableLog;
+        DTableH.fastMode = 1;
+        {   S16 const largeLimit= (S16)(1 << (tableLog-1));
+            U32 s;
+            for (s=0; s<maxSV1; s++) {
+                if (normalizedCounter[s]==-1) {
+                    tableDecode[highThreshold--].symbol = (FSEv07_FUNCTION_TYPE)s;
+                    symbolNext[s] = 1;
+                } else {
+                    if (normalizedCounter[s] >= largeLimit) DTableH.fastMode=0;
+                    symbolNext[s] = normalizedCounter[s];
+        }   }   }
+        memcpy(dt, &DTableH, sizeof(DTableH));
+    }
+
+    /* Spread symbols */
+    {   U32 const tableMask = tableSize-1;
+        U32 const step = FSEv07_TABLESTEP(tableSize);
+        U32 s, position = 0;
+        for (s=0; s<maxSV1; s++) {
+            int i;
+            for (i=0; i<normalizedCounter[s]; i++) {
+                tableDecode[position].symbol = (FSEv07_FUNCTION_TYPE)s;
+                position = (position + step) & tableMask;
+                while (position > highThreshold) position = (position + step) & tableMask;   /* lowprob area */
+        }   }
+
+        if (position!=0) return ERROR(GENERIC);   /* position must reach all cells once, otherwise normalizedCounter is incorrect */
+    }
+
+    /* Build Decoding table */
+    {   U32 u;
+        for (u=0; u<tableSize; u++) {
+            FSEv07_FUNCTION_TYPE const symbol = (FSEv07_FUNCTION_TYPE)(tableDecode[u].symbol);
+            U16 nextState = symbolNext[symbol]++;
+            tableDecode[u].nbBits = (BYTE) (tableLog - BITv07_highbit32 ((U32)nextState) );
+            tableDecode[u].newState = (U16) ( (nextState << tableDecode[u].nbBits) - tableSize);
+    }   }
+
+    return 0;
+}
+
+
+
+#ifndef FSEv07_COMMONDEFS_ONLY
+
+/*-*******************************************************
+*  Decompression (Byte symbols)
+*********************************************************/
+size_t FSEv07_buildDTable_rle (FSEv07_DTable* dt, BYTE symbolValue)
+{
+    void* ptr = dt;
+    FSEv07_DTableHeader* const DTableH = (FSEv07_DTableHeader*)ptr;
+    void* dPtr = dt + 1;
+    FSEv07_decode_t* const cell = (FSEv07_decode_t*)dPtr;
+
+    DTableH->tableLog = 0;
+    DTableH->fastMode = 0;
+
+    cell->newState = 0;
+    cell->symbol = symbolValue;
+    cell->nbBits = 0;
+
+    return 0;
+}
+
+
+size_t FSEv07_buildDTable_raw (FSEv07_DTable* dt, unsigned nbBits)
+{
+    void* ptr = dt;
+    FSEv07_DTableHeader* const DTableH = (FSEv07_DTableHeader*)ptr;
+    void* dPtr = dt + 1;
+    FSEv07_decode_t* const dinfo = (FSEv07_decode_t*)dPtr;
+    const unsigned tableSize = 1 << nbBits;
+    const unsigned tableMask = tableSize - 1;
+    const unsigned maxSV1 = tableMask+1;
+    unsigned s;
+
+    /* Sanity checks */
+    if (nbBits < 1) return ERROR(GENERIC);         /* min size */
+
+    /* Build Decoding Table */
+    DTableH->tableLog = (U16)nbBits;
+    DTableH->fastMode = 1;
+    for (s=0; s<maxSV1; s++) {
+        dinfo[s].newState = 0;
+        dinfo[s].symbol = (BYTE)s;
+        dinfo[s].nbBits = (BYTE)nbBits;
+    }
+
+    return 0;
+}
+
+FORCE_INLINE size_t FSEv07_decompress_usingDTable_generic(
+          void* dst, size_t maxDstSize,
+    const void* cSrc, size_t cSrcSize,
+    const FSEv07_DTable* dt, const unsigned fast)
+{
+    BYTE* const ostart = (BYTE*) dst;
+    BYTE* op = ostart;
+    BYTE* const omax = op + maxDstSize;
+    BYTE* const olimit = omax-3;
+
+    BITv07_DStream_t bitD;
+    FSEv07_DState_t state1;
+    FSEv07_DState_t state2;
+
+    /* Init */
+    { size_t const errorCode = BITv07_initDStream(&bitD, cSrc, cSrcSize);   /* replaced last arg by maxCompressed Size */
+      if (FSEv07_isError(errorCode)) return errorCode; }
+
+    FSEv07_initDState(&state1, &bitD, dt);
+    FSEv07_initDState(&state2, &bitD, dt);
+
+#define FSEv07_GETSYMBOL(statePtr) fast ? FSEv07_decodeSymbolFast(statePtr, &bitD) : FSEv07_decodeSymbol(statePtr, &bitD)
+
+    /* 4 symbols per loop */
+    for ( ; (BITv07_reloadDStream(&bitD)==BITv07_DStream_unfinished) && (op<olimit) ; op+=4) {
+        op[0] = FSEv07_GETSYMBOL(&state1);
+
+        if (FSEv07_MAX_TABLELOG*2+7 > sizeof(bitD.bitContainer)*8)    /* This test must be static */
+            BITv07_reloadDStream(&bitD);
+
+        op[1] = FSEv07_GETSYMBOL(&state2);
+
+        if (FSEv07_MAX_TABLELOG*4+7 > sizeof(bitD.bitContainer)*8)    /* This test must be static */
+            { if (BITv07_reloadDStream(&bitD) > BITv07_DStream_unfinished) { op+=2; break; } }
+
+        op[2] = FSEv07_GETSYMBOL(&state1);
+
+        if (FSEv07_MAX_TABLELOG*2+7 > sizeof(bitD.bitContainer)*8)    /* This test must be static */
+            BITv07_reloadDStream(&bitD);
+
+        op[3] = FSEv07_GETSYMBOL(&state2);
+    }
+
+    /* tail */
+    /* note : BITv07_reloadDStream(&bitD) >= FSEv07_DStream_partiallyFilled; Ends at exactly BITv07_DStream_completed */
+    while (1) {
+        if (op>(omax-2)) return ERROR(dstSize_tooSmall);
+
+        *op++ = FSEv07_GETSYMBOL(&state1);
+
+        if (BITv07_reloadDStream(&bitD)==BITv07_DStream_overflow) {
+            *op++ = FSEv07_GETSYMBOL(&state2);
+            break;
+        }
+
+        if (op>(omax-2)) return ERROR(dstSize_tooSmall);
+
+        *op++ = FSEv07_GETSYMBOL(&state2);
+
+        if (BITv07_reloadDStream(&bitD)==BITv07_DStream_overflow) {
+            *op++ = FSEv07_GETSYMBOL(&state1);
+            break;
+    }   }
+
+    return op-ostart;
+}
+
+
+size_t FSEv07_decompress_usingDTable(void* dst, size_t originalSize,
+                            const void* cSrc, size_t cSrcSize,
+                            const FSEv07_DTable* dt)
+{
+    const void* ptr = dt;
+    const FSEv07_DTableHeader* DTableH = (const FSEv07_DTableHeader*)ptr;
+    const U32 fastMode = DTableH->fastMode;
+
+    /* select fast mode (static) */
+    if (fastMode) return FSEv07_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 1);
+    return FSEv07_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 0);
+}
+
+
+size_t FSEv07_decompress(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize)
+{
+    const BYTE* const istart = (const BYTE*)cSrc;
+    const BYTE* ip = istart;
+    short counting[FSEv07_MAX_SYMBOL_VALUE+1];
+    DTable_max_t dt;   /* Static analyzer seems unable to understand this table will be properly initialized later */
+    unsigned tableLog;
+    unsigned maxSymbolValue = FSEv07_MAX_SYMBOL_VALUE;
+
+    if (cSrcSize<2) return ERROR(srcSize_wrong);   /* too small input size */
+
+    /* normal FSE decoding mode */
+    {   size_t const NCountLength = FSEv07_readNCount (counting, &maxSymbolValue, &tableLog, istart, cSrcSize);
+        if (FSEv07_isError(NCountLength)) return NCountLength;
+        if (NCountLength >= cSrcSize) return ERROR(srcSize_wrong);   /* too small input size */
+        ip += NCountLength;
+        cSrcSize -= NCountLength;
+    }
+
+    { size_t const errorCode = FSEv07_buildDTable (dt, counting, maxSymbolValue, tableLog);
+      if (FSEv07_isError(errorCode)) return errorCode; }
+
+    return FSEv07_decompress_usingDTable (dst, maxDstSize, ip, cSrcSize, dt);   /* always return, even if it is an error code */
+}
+
+
+
+#endif   /* FSEv07_COMMONDEFS_ONLY */
+
+/* ******************************************************************
+   Huffman decoder, part of New Generation Entropy library
+   Copyright (C) 2013-2016, 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
+   modification, are permitted provided that the following conditions are
+   met:
+
+       * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+       * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - FSE+HUF source repository : https://github.com/Cyan4973/FiniteStateEntropy
+    - Public forum : https://groups.google.com/forum/#!forum/lz4c
+****************************************************************** */
+
+/* **************************************************************
+*  Compiler specifics
+****************************************************************/
+#if defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
+/* inline is defined */
+#elif defined(_MSC_VER)
+#  define inline __inline
+#else
+#  define inline /* disable inline */
+#endif
+
+
+#ifdef _MSC_VER    /* Visual Studio */
+#  define FORCE_INLINE static __forceinline
+#  pragma warning(disable : 4127)        /* disable: C4127: conditional expression is constant */
+#else
+#  ifdef __GNUC__
+#    define FORCE_INLINE static inline __attribute__((always_inline))
+#  else
+#    define FORCE_INLINE static inline
+#  endif
+#endif
+
+
+
+/* **************************************************************
+*  Error Management
+****************************************************************/
+#define HUFv07_STATIC_ASSERT(c) { enum { HUFv07_static_assert = 1/(int)(!!(c)) }; }   /* use only *after* variable declarations */
+
+
+/*-***************************/
+/*  generic DTableDesc       */
+/*-***************************/
+
+typedef struct { BYTE maxTableLog; BYTE tableType; BYTE tableLog; BYTE reserved; } DTableDesc;
+
+static DTableDesc HUFv07_getDTableDesc(const HUFv07_DTable* table)
+{
+    DTableDesc dtd;
+    memcpy(&dtd, table, sizeof(dtd));
+    return dtd;
+}
+
+
+/*-***************************/
+/*  single-symbol decoding   */
+/*-***************************/
+
+typedef struct { BYTE byte; BYTE nbBits; } HUFv07_DEltX2;   /* single-symbol decoding */
+
+size_t HUFv07_readDTableX2 (HUFv07_DTable* DTable, const void* src, size_t srcSize)
+{
+    BYTE huffWeight[HUFv07_SYMBOLVALUE_MAX + 1];
+    U32 rankVal[HUFv07_TABLELOG_ABSOLUTEMAX + 1];   /* large enough for values from 0 to 16 */
+    U32 tableLog = 0;
+    U32 nbSymbols = 0;
+    size_t iSize;
+    void* const dtPtr = DTable + 1;
+    HUFv07_DEltX2* const dt = (HUFv07_DEltX2*)dtPtr;
+
+    HUFv07_STATIC_ASSERT(sizeof(DTableDesc) == sizeof(HUFv07_DTable));
+    //memset(huffWeight, 0, sizeof(huffWeight));   /* is not necessary, even though some analyzer complain ... */
+
+    iSize = HUFv07_readStats(huffWeight, HUFv07_SYMBOLVALUE_MAX + 1, rankVal, &nbSymbols, &tableLog, src, srcSize);
+    if (HUFv07_isError(iSize)) return iSize;
+
+    /* Table header */
+    {   DTableDesc dtd = HUFv07_getDTableDesc(DTable);
+        if (tableLog > (U32)(dtd.maxTableLog+1)) return ERROR(tableLog_tooLarge);   /* DTable too small, huffman tree cannot fit in */
+        dtd.tableType = 0;
+        dtd.tableLog = (BYTE)tableLog;
+        memcpy(DTable, &dtd, sizeof(dtd));
+    }
+
+    /* Prepare ranks */
+    {   U32 n, nextRankStart = 0;
+        for (n=1; n<tableLog+1; n++) {
+            U32 current = nextRankStart;
+            nextRankStart += (rankVal[n] << (n-1));
+            rankVal[n] = current;
+    }   }
+
+    /* fill DTable */
+    {   U32 n;
+        for (n=0; n<nbSymbols; n++) {
+            U32 const w = huffWeight[n];
+            U32 const length = (1 << w) >> 1;
+            U32 i;
+            HUFv07_DEltX2 D;
+            D.byte = (BYTE)n; D.nbBits = (BYTE)(tableLog + 1 - w);
+            for (i = rankVal[w]; i < rankVal[w] + length; i++)
+                dt[i] = D;
+            rankVal[w] += length;
+    }   }
+
+    return iSize;
+}
+
+
+static BYTE HUFv07_decodeSymbolX2(BITv07_DStream_t* Dstream, const HUFv07_DEltX2* dt, const U32 dtLog)
+{
+    size_t const val = BITv07_lookBitsFast(Dstream, dtLog); /* note : dtLog >= 1 */
+    BYTE const c = dt[val].byte;
+    BITv07_skipBits(Dstream, dt[val].nbBits);
+    return c;
+}
+
+#define HUFv07_DECODE_SYMBOLX2_0(ptr, DStreamPtr) \
+    *ptr++ = HUFv07_decodeSymbolX2(DStreamPtr, dt, dtLog)
+
+#define HUFv07_DECODE_SYMBOLX2_1(ptr, DStreamPtr) \
+    if (MEM_64bits() || (HUFv07_TABLELOG_MAX<=12)) \
+        HUFv07_DECODE_SYMBOLX2_0(ptr, DStreamPtr)
+
+#define HUFv07_DECODE_SYMBOLX2_2(ptr, DStreamPtr) \
+    if (MEM_64bits()) \
+        HUFv07_DECODE_SYMBOLX2_0(ptr, DStreamPtr)
+
+static inline size_t HUFv07_decodeStreamX2(BYTE* p, BITv07_DStream_t* const bitDPtr, BYTE* const pEnd, const HUFv07_DEltX2* const dt, const U32 dtLog)
+{
+    BYTE* const pStart = p;
+
+    /* up to 4 symbols at a time */
+    while ((BITv07_reloadDStream(bitDPtr) == BITv07_DStream_unfinished) && (p <= pEnd-4)) {
+        HUFv07_DECODE_SYMBOLX2_2(p, bitDPtr);
+        HUFv07_DECODE_SYMBOLX2_1(p, bitDPtr);
+        HUFv07_DECODE_SYMBOLX2_2(p, bitDPtr);
+        HUFv07_DECODE_SYMBOLX2_0(p, bitDPtr);
+    }
+
+    /* closer to the end */
+    while ((BITv07_reloadDStream(bitDPtr) == BITv07_DStream_unfinished) && (p < pEnd))
+        HUFv07_DECODE_SYMBOLX2_0(p, bitDPtr);
+
+    /* no more data to retrieve from bitstream, hence no need to reload */
+    while (p < pEnd)
+        HUFv07_DECODE_SYMBOLX2_0(p, bitDPtr);
+
+    return pEnd-pStart;
+}
+
+static size_t HUFv07_decompress1X2_usingDTable_internal(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    BYTE* op = (BYTE*)dst;
+    BYTE* const oend = op + dstSize;
+    const void* dtPtr = DTable + 1;
+    const HUFv07_DEltX2* const dt = (const HUFv07_DEltX2*)dtPtr;
+    BITv07_DStream_t bitD;
+    DTableDesc const dtd = HUFv07_getDTableDesc(DTable);
+    U32 const dtLog = dtd.tableLog;
+
+    { size_t const errorCode = BITv07_initDStream(&bitD, cSrc, cSrcSize);
+      if (HUFv07_isError(errorCode)) return errorCode; }
+
+    HUFv07_decodeStreamX2(op, &bitD, oend, dt, dtLog);
+
+    /* check */
+    if (!BITv07_endOfDStream(&bitD)) return ERROR(corruption_detected);
+
+    return dstSize;
+}
+
+size_t HUFv07_decompress1X2_usingDTable(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    DTableDesc dtd = HUFv07_getDTableDesc(DTable);
+    if (dtd.tableType != 0) return ERROR(GENERIC);
+    return HUFv07_decompress1X2_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
+}
+
+size_t HUFv07_decompress1X2_DCtx (HUFv07_DTable* DCtx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    const BYTE* ip = (const BYTE*) cSrc;
+
+    size_t const hSize = HUFv07_readDTableX2 (DCtx, cSrc, cSrcSize);
+    if (HUFv07_isError(hSize)) return hSize;
+    if (hSize >= cSrcSize) return ERROR(srcSize_wrong);
+    ip += hSize; cSrcSize -= hSize;
+
+    return HUFv07_decompress1X2_usingDTable_internal (dst, dstSize, ip, cSrcSize, DCtx);
+}
+
+size_t HUFv07_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    HUFv07_CREATE_STATIC_DTABLEX2(DTable, HUFv07_TABLELOG_MAX);
+    return HUFv07_decompress1X2_DCtx (DTable, dst, dstSize, cSrc, cSrcSize);
+}
+
+
+static size_t HUFv07_decompress4X2_usingDTable_internal(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    /* Check */
+    if (cSrcSize < 10) return ERROR(corruption_detected);  /* strict minimum : jump table + 1 byte per stream */
+
+    {   const BYTE* const istart = (const BYTE*) cSrc;
+        BYTE* const ostart = (BYTE*) dst;
+        BYTE* const oend = ostart + dstSize;
+        const void* const dtPtr = DTable + 1;
+        const HUFv07_DEltX2* const dt = (const HUFv07_DEltX2*)dtPtr;
+
+        /* Init */
+        BITv07_DStream_t bitD1;
+        BITv07_DStream_t bitD2;
+        BITv07_DStream_t bitD3;
+        BITv07_DStream_t bitD4;
+        size_t const length1 = MEM_readLE16(istart);
+        size_t const length2 = MEM_readLE16(istart+2);
+        size_t const length3 = MEM_readLE16(istart+4);
+        size_t const length4 = cSrcSize - (length1 + length2 + length3 + 6);
+        const BYTE* const istart1 = istart + 6;  /* jumpTable */
+        const BYTE* const istart2 = istart1 + length1;
+        const BYTE* const istart3 = istart2 + length2;
+        const BYTE* const istart4 = istart3 + length3;
+        const size_t segmentSize = (dstSize+3) / 4;
+        BYTE* const opStart2 = ostart + segmentSize;
+        BYTE* const opStart3 = opStart2 + segmentSize;
+        BYTE* const opStart4 = opStart3 + segmentSize;
+        BYTE* op1 = ostart;
+        BYTE* op2 = opStart2;
+        BYTE* op3 = opStart3;
+        BYTE* op4 = opStart4;
+        U32 endSignal;
+        DTableDesc const dtd = HUFv07_getDTableDesc(DTable);
+        U32 const dtLog = dtd.tableLog;
+
+        if (length4 > cSrcSize) return ERROR(corruption_detected);   /* overflow */
+        { size_t const errorCode = BITv07_initDStream(&bitD1, istart1, length1);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+        { size_t const errorCode = BITv07_initDStream(&bitD2, istart2, length2);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+        { size_t const errorCode = BITv07_initDStream(&bitD3, istart3, length3);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+        { size_t const errorCode = BITv07_initDStream(&bitD4, istart4, length4);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+
+        /* 16-32 symbols per loop (4-8 symbols per stream) */
+        endSignal = BITv07_reloadDStream(&bitD1) | BITv07_reloadDStream(&bitD2) | BITv07_reloadDStream(&bitD3) | BITv07_reloadDStream(&bitD4);
+        for ( ; (endSignal==BITv07_DStream_unfinished) && (op4<(oend-7)) ; ) {
+            HUFv07_DECODE_SYMBOLX2_2(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX2_2(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX2_2(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX2_2(op4, &bitD4);
+            HUFv07_DECODE_SYMBOLX2_1(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX2_1(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX2_1(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX2_1(op4, &bitD4);
+            HUFv07_DECODE_SYMBOLX2_2(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX2_2(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX2_2(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX2_2(op4, &bitD4);
+            HUFv07_DECODE_SYMBOLX2_0(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX2_0(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX2_0(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX2_0(op4, &bitD4);
+            endSignal = BITv07_reloadDStream(&bitD1) | BITv07_reloadDStream(&bitD2) | BITv07_reloadDStream(&bitD3) | BITv07_reloadDStream(&bitD4);
+        }
+
+        /* check corruption */
+        if (op1 > opStart2) return ERROR(corruption_detected);
+        if (op2 > opStart3) return ERROR(corruption_detected);
+        if (op3 > opStart4) return ERROR(corruption_detected);
+        /* note : op4 supposed already verified within main loop */
+
+        /* finish bitStreams one by one */
+        HUFv07_decodeStreamX2(op1, &bitD1, opStart2, dt, dtLog);
+        HUFv07_decodeStreamX2(op2, &bitD2, opStart3, dt, dtLog);
+        HUFv07_decodeStreamX2(op3, &bitD3, opStart4, dt, dtLog);
+        HUFv07_decodeStreamX2(op4, &bitD4, oend,     dt, dtLog);
+
+        /* check */
+        endSignal = BITv07_endOfDStream(&bitD1) & BITv07_endOfDStream(&bitD2) & BITv07_endOfDStream(&bitD3) & BITv07_endOfDStream(&bitD4);
+        if (!endSignal) return ERROR(corruption_detected);
+
+        /* decoded size */
+        return dstSize;
+    }
+}
+
+
+size_t HUFv07_decompress4X2_usingDTable(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    DTableDesc dtd = HUFv07_getDTableDesc(DTable);
+    if (dtd.tableType != 0) return ERROR(GENERIC);
+    return HUFv07_decompress4X2_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
+}
+
+
+size_t HUFv07_decompress4X2_DCtx (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    const BYTE* ip = (const BYTE*) cSrc;
+
+    size_t const hSize = HUFv07_readDTableX2 (dctx, cSrc, cSrcSize);
+    if (HUFv07_isError(hSize)) return hSize;
+    if (hSize >= cSrcSize) return ERROR(srcSize_wrong);
+    ip += hSize; cSrcSize -= hSize;
+
+    return HUFv07_decompress4X2_usingDTable_internal (dst, dstSize, ip, cSrcSize, dctx);
+}
+
+size_t HUFv07_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    HUFv07_CREATE_STATIC_DTABLEX2(DTable, HUFv07_TABLELOG_MAX);
+    return HUFv07_decompress4X2_DCtx(DTable, dst, dstSize, cSrc, cSrcSize);
+}
+
+
+/* *************************/
+/* double-symbols decoding */
+/* *************************/
+typedef struct { U16 sequence; BYTE nbBits; BYTE length; } HUFv07_DEltX4;  /* double-symbols decoding */
+
+typedef struct { BYTE symbol; BYTE weight; } sortedSymbol_t;
+
+static void HUFv07_fillDTableX4Level2(HUFv07_DEltX4* DTable, U32 sizeLog, const U32 consumed,
+                           const U32* rankValOrigin, const int minWeight,
+                           const sortedSymbol_t* sortedSymbols, const U32 sortedListSize,
+                           U32 nbBitsBaseline, U16 baseSeq)
+{
+    HUFv07_DEltX4 DElt;
+    U32 rankVal[HUFv07_TABLELOG_ABSOLUTEMAX + 1];
+
+    /* get pre-calculated rankVal */
+    memcpy(rankVal, rankValOrigin, sizeof(rankVal));
+
+    /* fill skipped values */
+    if (minWeight>1) {
+        U32 i, skipSize = rankVal[minWeight];
+        MEM_writeLE16(&(DElt.sequence), baseSeq);
+        DElt.nbBits   = (BYTE)(consumed);
+        DElt.length   = 1;
+        for (i = 0; i < skipSize; i++)
+            DTable[i] = DElt;
+    }
+
+    /* fill DTable */
+    { U32 s; for (s=0; s<sortedListSize; s++) {   /* note : sortedSymbols already skipped */
+        const U32 symbol = sortedSymbols[s].symbol;
+        const U32 weight = sortedSymbols[s].weight;
+        const U32 nbBits = nbBitsBaseline - weight;
+        const U32 length = 1 << (sizeLog-nbBits);
+        const U32 start = rankVal[weight];
+        U32 i = start;
+        const U32 end = start + length;
+
+        MEM_writeLE16(&(DElt.sequence), (U16)(baseSeq + (symbol << 8)));
+        DElt.nbBits = (BYTE)(nbBits + consumed);
+        DElt.length = 2;
+        do { DTable[i++] = DElt; } while (i<end);   /* since length >= 1 */
+
+        rankVal[weight] += length;
+    }}
+}
+
+typedef U32 rankVal_t[HUFv07_TABLELOG_ABSOLUTEMAX][HUFv07_TABLELOG_ABSOLUTEMAX + 1];
+
+static void HUFv07_fillDTableX4(HUFv07_DEltX4* DTable, const U32 targetLog,
+                           const sortedSymbol_t* sortedList, const U32 sortedListSize,
+                           const U32* rankStart, rankVal_t rankValOrigin, const U32 maxWeight,
+                           const U32 nbBitsBaseline)
+{
+    U32 rankVal[HUFv07_TABLELOG_ABSOLUTEMAX + 1];
+    const int scaleLog = nbBitsBaseline - targetLog;   /* note : targetLog >= srcLog, hence scaleLog <= 1 */
+    const U32 minBits  = nbBitsBaseline - maxWeight;
+    U32 s;
+
+    memcpy(rankVal, rankValOrigin, sizeof(rankVal));
+
+    /* fill DTable */
+    for (s=0; s<sortedListSize; s++) {
+        const U16 symbol = sortedList[s].symbol;
+        const U32 weight = sortedList[s].weight;
+        const U32 nbBits = nbBitsBaseline - weight;
+        const U32 start = rankVal[weight];
+        const U32 length = 1 << (targetLog-nbBits);
+
+        if (targetLog-nbBits >= minBits) {   /* enough room for a second symbol */
+            U32 sortedRank;
+            int minWeight = nbBits + scaleLog;
+            if (minWeight < 1) minWeight = 1;
+            sortedRank = rankStart[minWeight];
+            HUFv07_fillDTableX4Level2(DTable+start, targetLog-nbBits, nbBits,
+                           rankValOrigin[nbBits], minWeight,
+                           sortedList+sortedRank, sortedListSize-sortedRank,
+                           nbBitsBaseline, symbol);
+        } else {
+            HUFv07_DEltX4 DElt;
+            MEM_writeLE16(&(DElt.sequence), symbol);
+            DElt.nbBits = (BYTE)(nbBits);
+            DElt.length = 1;
+            {   U32 u;
+                const U32 end = start + length;
+                for (u = start; u < end; u++) DTable[u] = DElt;
+        }   }
+        rankVal[weight] += length;
+    }
+}
+
+size_t HUFv07_readDTableX4 (HUFv07_DTable* DTable, const void* src, size_t srcSize)
+{
+    BYTE weightList[HUFv07_SYMBOLVALUE_MAX + 1];
+    sortedSymbol_t sortedSymbol[HUFv07_SYMBOLVALUE_MAX + 1];
+    U32 rankStats[HUFv07_TABLELOG_ABSOLUTEMAX + 1] = { 0 };
+    U32 rankStart0[HUFv07_TABLELOG_ABSOLUTEMAX + 2] = { 0 };
+    U32* const rankStart = rankStart0+1;
+    rankVal_t rankVal;
+    U32 tableLog, maxW, sizeOfSort, nbSymbols;
+    DTableDesc dtd = HUFv07_getDTableDesc(DTable);
+    U32 const maxTableLog = dtd.maxTableLog;
+    size_t iSize;
+    void* dtPtr = DTable+1;   /* force compiler to avoid strict-aliasing */
+    HUFv07_DEltX4* const dt = (HUFv07_DEltX4*)dtPtr;
+
+    HUFv07_STATIC_ASSERT(sizeof(HUFv07_DEltX4) == sizeof(HUFv07_DTable));   /* if compilation fails here, assertion is false */
+    if (maxTableLog > HUFv07_TABLELOG_ABSOLUTEMAX) return ERROR(tableLog_tooLarge);
+    //memset(weightList, 0, sizeof(weightList));   /* is not necessary, even though some analyzer complain ... */
+
+    iSize = HUFv07_readStats(weightList, HUFv07_SYMBOLVALUE_MAX + 1, rankStats, &nbSymbols, &tableLog, src, srcSize);
+    if (HUFv07_isError(iSize)) return iSize;
+
+    /* check result */
+    if (tableLog > maxTableLog) return ERROR(tableLog_tooLarge);   /* DTable can't fit code depth */
+
+    /* find maxWeight */
+    for (maxW = tableLog; rankStats[maxW]==0; maxW--) {}  /* necessarily finds a solution before 0 */
+
+    /* Get start index of each weight */
+    {   U32 w, nextRankStart = 0;
+        for (w=1; w<maxW+1; w++) {
+            U32 current = nextRankStart;
+            nextRankStart += rankStats[w];
+            rankStart[w] = current;
+        }
+        rankStart[0] = nextRankStart;   /* put all 0w symbols at the end of sorted list*/
+        sizeOfSort = nextRankStart;
+    }
+
+    /* sort symbols by weight */
+    {   U32 s;
+        for (s=0; s<nbSymbols; s++) {
+            U32 const w = weightList[s];
+            U32 const r = rankStart[w]++;
+            sortedSymbol[r].symbol = (BYTE)s;
+            sortedSymbol[r].weight = (BYTE)w;
+        }
+        rankStart[0] = 0;   /* forget 0w symbols; this is beginning of weight(1) */
+    }
+
+    /* Build rankVal */
+    {   U32* const rankVal0 = rankVal[0];
+        {   int const rescale = (maxTableLog-tableLog) - 1;   /* tableLog <= maxTableLog */
+            U32 nextRankVal = 0;
+            U32 w;
+            for (w=1; w<maxW+1; w++) {
+                U32 current = nextRankVal;
+                nextRankVal += rankStats[w] << (w+rescale);
+                rankVal0[w] = current;
+        }   }
+        {   U32 const minBits = tableLog+1 - maxW;
+            U32 consumed;
+            for (consumed = minBits; consumed < maxTableLog - minBits + 1; consumed++) {
+                U32* const rankValPtr = rankVal[consumed];
+                U32 w;
+                for (w = 1; w < maxW+1; w++) {
+                    rankValPtr[w] = rankVal0[w] >> consumed;
+    }   }   }   }
+
+    HUFv07_fillDTableX4(dt, maxTableLog,
+                   sortedSymbol, sizeOfSort,
+                   rankStart0, rankVal, maxW,
+                   tableLog+1);
+
+    dtd.tableLog = (BYTE)maxTableLog;
+    dtd.tableType = 1;
+    memcpy(DTable, &dtd, sizeof(dtd));
+    return iSize;
+}
+
+
+static U32 HUFv07_decodeSymbolX4(void* op, BITv07_DStream_t* DStream, const HUFv07_DEltX4* dt, const U32 dtLog)
+{
+    const size_t val = BITv07_lookBitsFast(DStream, dtLog);   /* note : dtLog >= 1 */
+    memcpy(op, dt+val, 2);
+    BITv07_skipBits(DStream, dt[val].nbBits);
+    return dt[val].length;
+}
+
+static U32 HUFv07_decodeLastSymbolX4(void* op, BITv07_DStream_t* DStream, const HUFv07_DEltX4* dt, const U32 dtLog)
+{
+    const size_t val = BITv07_lookBitsFast(DStream, dtLog);   /* note : dtLog >= 1 */
+    memcpy(op, dt+val, 1);
+    if (dt[val].length==1) BITv07_skipBits(DStream, dt[val].nbBits);
+    else {
+        if (DStream->bitsConsumed < (sizeof(DStream->bitContainer)*8)) {
+            BITv07_skipBits(DStream, dt[val].nbBits);
+            if (DStream->bitsConsumed > (sizeof(DStream->bitContainer)*8))
+                DStream->bitsConsumed = (sizeof(DStream->bitContainer)*8);   /* ugly hack; works only because it's the last symbol. Note : can't easily extract nbBits from just this symbol */
+    }   }
+    return 1;
+}
+
+
+#define HUFv07_DECODE_SYMBOLX4_0(ptr, DStreamPtr) \
+    ptr += HUFv07_decodeSymbolX4(ptr, DStreamPtr, dt, dtLog)
+
+#define HUFv07_DECODE_SYMBOLX4_1(ptr, DStreamPtr) \
+    if (MEM_64bits() || (HUFv07_TABLELOG_MAX<=12)) \
+        ptr += HUFv07_decodeSymbolX4(ptr, DStreamPtr, dt, dtLog)
+
+#define HUFv07_DECODE_SYMBOLX4_2(ptr, DStreamPtr) \
+    if (MEM_64bits()) \
+        ptr += HUFv07_decodeSymbolX4(ptr, DStreamPtr, dt, dtLog)
+
+static inline size_t HUFv07_decodeStreamX4(BYTE* p, BITv07_DStream_t* bitDPtr, BYTE* const pEnd, const HUFv07_DEltX4* const dt, const U32 dtLog)
+{
+    BYTE* const pStart = p;
+
+    /* up to 8 symbols at a time */
+    while ((BITv07_reloadDStream(bitDPtr) == BITv07_DStream_unfinished) && (p < pEnd-7)) {
+        HUFv07_DECODE_SYMBOLX4_2(p, bitDPtr);
+        HUFv07_DECODE_SYMBOLX4_1(p, bitDPtr);
+        HUFv07_DECODE_SYMBOLX4_2(p, bitDPtr);
+        HUFv07_DECODE_SYMBOLX4_0(p, bitDPtr);
+    }
+
+    /* closer to end : up to 2 symbols at a time */
+    while ((BITv07_reloadDStream(bitDPtr) == BITv07_DStream_unfinished) && (p <= pEnd-2))
+        HUFv07_DECODE_SYMBOLX4_0(p, bitDPtr);
+
+    while (p <= pEnd-2)
+        HUFv07_DECODE_SYMBOLX4_0(p, bitDPtr);   /* no need to reload : reached the end of DStream */
+
+    if (p < pEnd)
+        p += HUFv07_decodeLastSymbolX4(p, bitDPtr, dt, dtLog);
+
+    return p-pStart;
+}
+
+
+static size_t HUFv07_decompress1X4_usingDTable_internal(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    BITv07_DStream_t bitD;
+
+    /* Init */
+    {   size_t const errorCode = BITv07_initDStream(&bitD, cSrc, cSrcSize);
+        if (HUFv07_isError(errorCode)) return errorCode;
+    }
+
+    /* decode */
+    {   BYTE* const ostart = (BYTE*) dst;
+        BYTE* const oend = ostart + dstSize;
+        const void* const dtPtr = DTable+1;   /* force compiler to not use strict-aliasing */
+        const HUFv07_DEltX4* const dt = (const HUFv07_DEltX4*)dtPtr;
+        DTableDesc const dtd = HUFv07_getDTableDesc(DTable);
+        HUFv07_decodeStreamX4(ostart, &bitD, oend, dt, dtd.tableLog);
+    }
+
+    /* check */
+    if (!BITv07_endOfDStream(&bitD)) return ERROR(corruption_detected);
+
+    /* decoded size */
+    return dstSize;
+}
+
+size_t HUFv07_decompress1X4_usingDTable(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    DTableDesc dtd = HUFv07_getDTableDesc(DTable);
+    if (dtd.tableType != 1) return ERROR(GENERIC);
+    return HUFv07_decompress1X4_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
+}
+
+size_t HUFv07_decompress1X4_DCtx (HUFv07_DTable* DCtx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    const BYTE* ip = (const BYTE*) cSrc;
+
+    size_t const hSize = HUFv07_readDTableX4 (DCtx, cSrc, cSrcSize);
+    if (HUFv07_isError(hSize)) return hSize;
+    if (hSize >= cSrcSize) return ERROR(srcSize_wrong);
+    ip += hSize; cSrcSize -= hSize;
+
+    return HUFv07_decompress1X4_usingDTable_internal (dst, dstSize, ip, cSrcSize, DCtx);
+}
+
+size_t HUFv07_decompress1X4 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    HUFv07_CREATE_STATIC_DTABLEX4(DTable, HUFv07_TABLELOG_MAX);
+    return HUFv07_decompress1X4_DCtx(DTable, dst, dstSize, cSrc, cSrcSize);
+}
+
+static size_t HUFv07_decompress4X4_usingDTable_internal(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    if (cSrcSize < 10) return ERROR(corruption_detected);   /* strict minimum : jump table + 1 byte per stream */
+
+    {   const BYTE* const istart = (const BYTE*) cSrc;
+        BYTE* const ostart = (BYTE*) dst;
+        BYTE* const oend = ostart + dstSize;
+        const void* const dtPtr = DTable+1;
+        const HUFv07_DEltX4* const dt = (const HUFv07_DEltX4*)dtPtr;
+
+        /* Init */
+        BITv07_DStream_t bitD1;
+        BITv07_DStream_t bitD2;
+        BITv07_DStream_t bitD3;
+        BITv07_DStream_t bitD4;
+        size_t const length1 = MEM_readLE16(istart);
+        size_t const length2 = MEM_readLE16(istart+2);
+        size_t const length3 = MEM_readLE16(istart+4);
+        size_t const length4 = cSrcSize - (length1 + length2 + length3 + 6);
+        const BYTE* const istart1 = istart + 6;  /* jumpTable */
+        const BYTE* const istart2 = istart1 + length1;
+        const BYTE* const istart3 = istart2 + length2;
+        const BYTE* const istart4 = istart3 + length3;
+        size_t const segmentSize = (dstSize+3) / 4;
+        BYTE* const opStart2 = ostart + segmentSize;
+        BYTE* const opStart3 = opStart2 + segmentSize;
+        BYTE* const opStart4 = opStart3 + segmentSize;
+        BYTE* op1 = ostart;
+        BYTE* op2 = opStart2;
+        BYTE* op3 = opStart3;
+        BYTE* op4 = opStart4;
+        U32 endSignal;
+        DTableDesc const dtd = HUFv07_getDTableDesc(DTable);
+        U32 const dtLog = dtd.tableLog;
+
+        if (length4 > cSrcSize) return ERROR(corruption_detected);   /* overflow */
+        { size_t const errorCode = BITv07_initDStream(&bitD1, istart1, length1);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+        { size_t const errorCode = BITv07_initDStream(&bitD2, istart2, length2);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+        { size_t const errorCode = BITv07_initDStream(&bitD3, istart3, length3);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+        { size_t const errorCode = BITv07_initDStream(&bitD4, istart4, length4);
+          if (HUFv07_isError(errorCode)) return errorCode; }
+
+        /* 16-32 symbols per loop (4-8 symbols per stream) */
+        endSignal = BITv07_reloadDStream(&bitD1) | BITv07_reloadDStream(&bitD2) | BITv07_reloadDStream(&bitD3) | BITv07_reloadDStream(&bitD4);
+        for ( ; (endSignal==BITv07_DStream_unfinished) && (op4<(oend-7)) ; ) {
+            HUFv07_DECODE_SYMBOLX4_2(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX4_2(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX4_2(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX4_2(op4, &bitD4);
+            HUFv07_DECODE_SYMBOLX4_1(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX4_1(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX4_1(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX4_1(op4, &bitD4);
+            HUFv07_DECODE_SYMBOLX4_2(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX4_2(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX4_2(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX4_2(op4, &bitD4);
+            HUFv07_DECODE_SYMBOLX4_0(op1, &bitD1);
+            HUFv07_DECODE_SYMBOLX4_0(op2, &bitD2);
+            HUFv07_DECODE_SYMBOLX4_0(op3, &bitD3);
+            HUFv07_DECODE_SYMBOLX4_0(op4, &bitD4);
+
+            endSignal = BITv07_reloadDStream(&bitD1) | BITv07_reloadDStream(&bitD2) | BITv07_reloadDStream(&bitD3) | BITv07_reloadDStream(&bitD4);
+        }
+
+        /* check corruption */
+        if (op1 > opStart2) return ERROR(corruption_detected);
+        if (op2 > opStart3) return ERROR(corruption_detected);
+        if (op3 > opStart4) return ERROR(corruption_detected);
+        /* note : op4 supposed already verified within main loop */
+
+        /* finish bitStreams one by one */
+        HUFv07_decodeStreamX4(op1, &bitD1, opStart2, dt, dtLog);
+        HUFv07_decodeStreamX4(op2, &bitD2, opStart3, dt, dtLog);
+        HUFv07_decodeStreamX4(op3, &bitD3, opStart4, dt, dtLog);
+        HUFv07_decodeStreamX4(op4, &bitD4, oend,     dt, dtLog);
+
+        /* check */
+        { U32 const endCheck = BITv07_endOfDStream(&bitD1) & BITv07_endOfDStream(&bitD2) & BITv07_endOfDStream(&bitD3) & BITv07_endOfDStream(&bitD4);
+          if (!endCheck) return ERROR(corruption_detected); }
+
+        /* decoded size */
+        return dstSize;
+    }
+}
+
+
+size_t HUFv07_decompress4X4_usingDTable(
+          void* dst,  size_t dstSize,
+    const void* cSrc, size_t cSrcSize,
+    const HUFv07_DTable* DTable)
+{
+    DTableDesc dtd = HUFv07_getDTableDesc(DTable);
+    if (dtd.tableType != 1) return ERROR(GENERIC);
+    return HUFv07_decompress4X4_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
+}
+
+
+size_t HUFv07_decompress4X4_DCtx (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    const BYTE* ip = (const BYTE*) cSrc;
+
+    size_t hSize = HUFv07_readDTableX4 (dctx, cSrc, cSrcSize);
+    if (HUFv07_isError(hSize)) return hSize;
+    if (hSize >= cSrcSize) return ERROR(srcSize_wrong);
+    ip += hSize; cSrcSize -= hSize;
+
+    return HUFv07_decompress4X4_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx);
+}
+
+size_t HUFv07_decompress4X4 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    HUFv07_CREATE_STATIC_DTABLEX4(DTable, HUFv07_TABLELOG_MAX);
+    return HUFv07_decompress4X4_DCtx(DTable, dst, dstSize, cSrc, cSrcSize);
+}
+
+
+/* ********************************/
+/* Generic decompression selector */
+/* ********************************/
+
+size_t HUFv07_decompress1X_usingDTable(void* dst, size_t maxDstSize,
+                                    const void* cSrc, size_t cSrcSize,
+                                    const HUFv07_DTable* DTable)
+{
+    DTableDesc const dtd = HUFv07_getDTableDesc(DTable);
+    return dtd.tableType ? HUFv07_decompress1X4_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable) :
+                           HUFv07_decompress1X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable);
+}
+
+size_t HUFv07_decompress4X_usingDTable(void* dst, size_t maxDstSize,
+                                    const void* cSrc, size_t cSrcSize,
+                                    const HUFv07_DTable* DTable)
+{
+    DTableDesc const dtd = HUFv07_getDTableDesc(DTable);
+    return dtd.tableType ? HUFv07_decompress4X4_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable) :
+                           HUFv07_decompress4X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable);
+}
+
+
+typedef struct { U32 tableTime; U32 decode256Time; } algo_time_t;
+static const algo_time_t algoTime[16 /* Quantization */][3 /* single, double, quad */] =
+{
+    /* single, double, quad */
+    {{0,0}, {1,1}, {2,2}},  /* Q==0 : impossible */
+    {{0,0}, {1,1}, {2,2}},  /* Q==1 : impossible */
+    {{  38,130}, {1313, 74}, {2151, 38}},   /* Q == 2 : 12-18% */
+    {{ 448,128}, {1353, 74}, {2238, 41}},   /* Q == 3 : 18-25% */
+    {{ 556,128}, {1353, 74}, {2238, 47}},   /* Q == 4 : 25-32% */
+    {{ 714,128}, {1418, 74}, {2436, 53}},   /* Q == 5 : 32-38% */
+    {{ 883,128}, {1437, 74}, {2464, 61}},   /* Q == 6 : 38-44% */
+    {{ 897,128}, {1515, 75}, {2622, 68}},   /* Q == 7 : 44-50% */
+    {{ 926,128}, {1613, 75}, {2730, 75}},   /* Q == 8 : 50-56% */
+    {{ 947,128}, {1729, 77}, {3359, 77}},   /* Q == 9 : 56-62% */
+    {{1107,128}, {2083, 81}, {4006, 84}},   /* Q ==10 : 62-69% */
+    {{1177,128}, {2379, 87}, {4785, 88}},   /* Q ==11 : 69-75% */
+    {{1242,128}, {2415, 93}, {5155, 84}},   /* Q ==12 : 75-81% */
+    {{1349,128}, {2644,106}, {5260,106}},   /* Q ==13 : 81-87% */
+    {{1455,128}, {2422,124}, {4174,124}},   /* Q ==14 : 87-93% */
+    {{ 722,128}, {1891,145}, {1936,146}},   /* Q ==15 : 93-99% */
+};
+
+/** HUFv07_selectDecoder() :
+*   Tells which decoder is likely to decode faster,
+*   based on a set of pre-determined metrics.
+*   @return : 0==HUFv07_decompress4X2, 1==HUFv07_decompress4X4 .
+*   Assumption : 0 < cSrcSize < dstSize <= 128 KB */
+U32 HUFv07_selectDecoder (size_t dstSize, size_t cSrcSize)
+{
+    /* decoder timing evaluation */
+    U32 const Q = (U32)(cSrcSize * 16 / dstSize);   /* Q < 16 since dstSize > cSrcSize */
+    U32 const D256 = (U32)(dstSize >> 8);
+    U32 const DTime0 = algoTime[Q][0].tableTime + (algoTime[Q][0].decode256Time * D256);
+    U32 DTime1 = algoTime[Q][1].tableTime + (algoTime[Q][1].decode256Time * D256);
+    DTime1 += DTime1 >> 3;  /* advantage to algorithm using less memory, for cache eviction */
+
+    return DTime1 < DTime0;
+}
+
+
+typedef size_t (*decompressionAlgo)(void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);
+
+size_t HUFv07_decompress (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    static const decompressionAlgo decompress[2] = { HUFv07_decompress4X2, HUFv07_decompress4X4 };
+
+    /* validation checks */
+    if (dstSize == 0) return ERROR(dstSize_tooSmall);
+    if (cSrcSize > dstSize) return ERROR(corruption_detected);   /* invalid */
+    if (cSrcSize == dstSize) { memcpy(dst, cSrc, dstSize); return dstSize; }   /* not compressed */
+    if (cSrcSize == 1) { memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; }   /* RLE */
+
+    {   U32 const algoNb = HUFv07_selectDecoder(dstSize, cSrcSize);
+        return decompress[algoNb](dst, dstSize, cSrc, cSrcSize);
+    }
+
+    //return HUFv07_decompress4X2(dst, dstSize, cSrc, cSrcSize);   /* multi-streams single-symbol decoding */
+    //return HUFv07_decompress4X4(dst, dstSize, cSrc, cSrcSize);   /* multi-streams double-symbols decoding */
+}
+
+size_t HUFv07_decompress4X_DCtx (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    /* validation checks */
+    if (dstSize == 0) return ERROR(dstSize_tooSmall);
+    if (cSrcSize > dstSize) return ERROR(corruption_detected);   /* invalid */
+    if (cSrcSize == dstSize) { memcpy(dst, cSrc, dstSize); return dstSize; }   /* not compressed */
+    if (cSrcSize == 1) { memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; }   /* RLE */
+
+    {   U32 const algoNb = HUFv07_selectDecoder(dstSize, cSrcSize);
+        return algoNb ? HUFv07_decompress4X4_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) :
+                        HUFv07_decompress4X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) ;
+    }
+}
+
+size_t HUFv07_decompress4X_hufOnly (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    /* validation checks */
+    if (dstSize == 0) return ERROR(dstSize_tooSmall);
+    if ((cSrcSize >= dstSize) || (cSrcSize <= 1)) return ERROR(corruption_detected);   /* invalid */
+
+    {   U32 const algoNb = HUFv07_selectDecoder(dstSize, cSrcSize);
+        return algoNb ? HUFv07_decompress4X4_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) :
+                        HUFv07_decompress4X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) ;
+    }
+}
+
+size_t HUFv07_decompress1X_DCtx (HUFv07_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize)
+{
+    /* validation checks */
+    if (dstSize == 0) return ERROR(dstSize_tooSmall);
+    if (cSrcSize > dstSize) return ERROR(corruption_detected);   /* invalid */
+    if (cSrcSize == dstSize) { memcpy(dst, cSrc, dstSize); return dstSize; }   /* not compressed */
+    if (cSrcSize == 1) { memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; }   /* RLE */
+
+    {   U32 const algoNb = HUFv07_selectDecoder(dstSize, cSrcSize);
+        return algoNb ? HUFv07_decompress1X4_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) :
+                        HUFv07_decompress1X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) ;
+    }
+}
+/*
+    Common functions of Zstd compression library
+    Copyright (C) 2015-2016, 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
+    modification, are permitted provided that the following conditions are
+    met:
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - zstd homepage : http://www.zstd.net/
+*/
+
+
+
+/*-****************************************
+*  ZSTD Error Management
+******************************************/
+/*! ZSTDv07_isError() :
+*   tells if a return value is an error code */
+unsigned ZSTDv07_isError(size_t code) { return ERR_isError(code); }
+
+/*! ZSTDv07_getErrorName() :
+*   provides error code string from function result (useful for debugging) */
+const char* ZSTDv07_getErrorName(size_t code) { return ERR_getErrorName(code); }
+
+/*! ZSTDv07_getError() :
+*   convert a `size_t` function result into a proper ZSTDv07_errorCode enum */
+ZSTDv07_ErrorCode ZSTDv07_getErrorCode(size_t code) { return ERR_getErrorCode(code); }
+
+/*! ZSTDv07_getErrorString() :
+*   provides error code string from enum */
+const char* ZSTDv07_getErrorString(ZSTDv07_ErrorCode code) { return ERR_getErrorName(code); }
+
+
+/* **************************************************************
+*  ZBUFF Error Management
+****************************************************************/
+unsigned ZBUFFv07_isError(size_t errorCode) { return ERR_isError(errorCode); }
+
+const char* ZBUFFv07_getErrorName(size_t errorCode) { return ERR_getErrorName(errorCode); }
+
+
+
+void* ZSTDv07_defaultAllocFunction(void* opaque, size_t size)
+{
+    void* address = malloc(size);
+    (void)opaque;
+    /* printf("alloc %p, %d opaque=%p \n", address, (int)size, opaque); */
+    return address;
+}
+
+void ZSTDv07_defaultFreeFunction(void* opaque, void* address)
+{
+    (void)opaque;
+    /* if (address) printf("free %p opaque=%p \n", address, opaque); */
+    free(address);
+}
+/*
+    zstd_internal - common functions to include
+    Header File for include
+    Copyright (C) 2014-2016, 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
+    modification, are permitted provided that the following conditions are
+    met:
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - zstd homepage : https://www.zstd.net
+*/
+#ifndef ZSTDv07_CCOMMON_H_MODULE
+#define ZSTDv07_CCOMMON_H_MODULE
+
+
+/*-*************************************
+*  Common macros
+***************************************/
+#define MIN(a,b) ((a)<(b) ? (a) : (b))
+#define MAX(a,b) ((a)>(b) ? (a) : (b))
+
+
+/*-*************************************
+*  Common constants
+***************************************/
+#define ZSTDv07_OPT_DEBUG 0     /* 3 = compression stats;  5 = check encoded sequences;  9 = full logs */
+#include <stdio.h>
+#if defined(ZSTDv07_OPT_DEBUG) && ZSTDv07_OPT_DEBUG>=9
+    #define ZSTDv07_LOG_PARSER(...) printf(__VA_ARGS__)
+    #define ZSTDv07_LOG_ENCODE(...) printf(__VA_ARGS__)
+    #define ZSTDv07_LOG_BLOCK(...) printf(__VA_ARGS__)
+#else
+    #define ZSTDv07_LOG_PARSER(...)
+    #define ZSTDv07_LOG_ENCODE(...)
+    #define ZSTDv07_LOG_BLOCK(...)
+#endif
+
+#define ZSTDv07_OPT_NUM    (1<<12)
+#define ZSTDv07_DICT_MAGIC  0xEC30A437   /* v0.7 */
+
+#define ZSTDv07_REP_NUM    3
+#define ZSTDv07_REP_INIT   ZSTDv07_REP_NUM
+#define ZSTDv07_REP_MOVE   (ZSTDv07_REP_NUM-1)
+static const U32 repStartValue[ZSTDv07_REP_NUM] = { 1, 4, 8 };
+
+#define KB *(1 <<10)
+#define MB *(1 <<20)
+#define GB *(1U<<30)
+
+#define BIT7 128
+#define BIT6  64
+#define BIT5  32
+#define BIT4  16
+#define BIT1   2
+#define BIT0   1
+
+#define ZSTDv07_WINDOWLOG_ABSOLUTEMIN 10
+static const size_t ZSTDv07_fcs_fieldSize[4] = { 0, 2, 4, 8 };
+static const size_t ZSTDv07_did_fieldSize[4] = { 0, 1, 2, 4 };
+
+#define ZSTDv07_BLOCKHEADERSIZE 3   /* C standard doesn't allow `static const` variable to be init using another `static const` variable */
+static const size_t ZSTDv07_blockHeaderSize = ZSTDv07_BLOCKHEADERSIZE;
+typedef enum { bt_compressed, bt_raw, bt_rle, bt_end } blockType_t;
+
+#define MIN_SEQUENCES_SIZE 1 /* nbSeq==0 */
+#define MIN_CBLOCK_SIZE (1 /*litCSize*/ + 1 /* RLE or RAW */ + MIN_SEQUENCES_SIZE /* nbSeq==0 */)   /* for a non-null block */
+
+#define HufLog 12
+typedef enum { lbt_huffman, lbt_repeat, lbt_raw, lbt_rle } litBlockType_t;
+
+#define LONGNBSEQ 0x7F00
+
+#define MINMATCH 3
+#define EQUAL_READ32 4
+
+#define Litbits  8
+#define MaxLit ((1<<Litbits) - 1)
+#define MaxML  52
+#define MaxLL  35
+#define MaxOff 28
+#define MaxSeq MAX(MaxLL, MaxML)   /* Assumption : MaxOff < MaxLL,MaxML */
+#define MLFSELog    9
+#define LLFSELog    9
+#define OffFSELog   8
+
+#define FSEv07_ENCODING_RAW     0
+#define FSEv07_ENCODING_RLE     1
+#define FSEv07_ENCODING_STATIC  2
+#define FSEv07_ENCODING_DYNAMIC 3
+
+static const U32 LL_bits[MaxLL+1] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                                      1, 1, 1, 1, 2, 2, 3, 3, 4, 6, 7, 8, 9,10,11,12,
+                                     13,14,15,16 };
+static const S16 LL_defaultNorm[MaxLL+1] = { 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1,
+                                             2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 1, 1, 1, 1, 1,
+                                            -1,-1,-1,-1 };
+static const U32 LL_defaultNormLog = 6;
+
+static const U32 ML_bits[MaxML+1] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                                      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                                      1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 7, 8, 9,10,11,
+                                     12,13,14,15,16 };
+static const S16 ML_defaultNorm[MaxML+1] = { 1, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1,
+                                             1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+                                             1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,-1,-1,
+                                            -1,-1,-1,-1,-1 };
+static const U32 ML_defaultNormLog = 6;
+
+static const S16 OF_defaultNorm[MaxOff+1] = { 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1,
+                                              1, 1, 1, 1, 1, 1, 1, 1,-1,-1,-1,-1,-1 };
+static const U32 OF_defaultNormLog = 5;
+
+
+/*-*******************************************
+*  Shared functions to include for inlining
+*********************************************/
+static void ZSTDv07_copy8(void* dst, const void* src) { memcpy(dst, src, 8); }
+#define COPY8(d,s) { ZSTDv07_copy8(d,s); d+=8; s+=8; }
+
+/*! ZSTDv07_wildcopy() :
+*   custom version of memcpy(), can copy up to 7 bytes too many (8 bytes if length==0) */
+#define WILDCOPY_OVERLENGTH 8
+MEM_STATIC void ZSTDv07_wildcopy(void* dst, const void* src, size_t length)
+{
+    const BYTE* ip = (const BYTE*)src;
+    BYTE* op = (BYTE*)dst;
+    BYTE* const oend = op + length;
+    do
+        COPY8(op, ip)
+    while (op < oend);
+}
+
+
+/*-*******************************************
+*  Private interfaces
+*********************************************/
+typedef struct ZSTDv07_stats_s ZSTDv07_stats_t;
+
+typedef struct {
+    U32 off;
+    U32 len;
+} ZSTDv07_match_t;
+
+typedef struct {
+    U32 price;
+    U32 off;
+    U32 mlen;
+    U32 litlen;
+    U32 rep[ZSTDv07_REP_INIT];
+} ZSTDv07_optimal_t;
+
+struct ZSTDv07_stats_s { U32 unused; };
+MEM_STATIC void ZSTDv07_statsPrint(ZSTDv07_stats_t* stats, U32 searchLength) { (void)stats; (void)searchLength; }
+MEM_STATIC void ZSTDv07_statsInit(ZSTDv07_stats_t* stats) { (void)stats; }
+MEM_STATIC void ZSTDv07_statsResetFreqs(ZSTDv07_stats_t* stats) { (void)stats; }
+MEM_STATIC void ZSTDv07_statsUpdatePrices(ZSTDv07_stats_t* stats, size_t litLength, const BYTE* literals, size_t offset, size_t matchLength) { (void)stats; (void)litLength; (void)literals; (void)offset; (void)matchLength; }
+
+typedef struct {
+    void* buffer;
+    U32*  offsetStart;
+    U32*  offset;
+    BYTE* offCodeStart;
+    BYTE* litStart;
+    BYTE* lit;
+    U16*  litLengthStart;
+    U16*  litLength;
+    BYTE* llCodeStart;
+    U16*  matchLengthStart;
+    U16*  matchLength;
+    BYTE* mlCodeStart;
+    U32   longLengthID;   /* 0 == no longLength; 1 == Lit.longLength; 2 == Match.longLength; */
+    U32   longLengthPos;
+    /* opt */
+    ZSTDv07_optimal_t* priceTable;
+    ZSTDv07_match_t* matchTable;
+    U32* matchLengthFreq;
+    U32* litLengthFreq;
+    U32* litFreq;
+    U32* offCodeFreq;
+    U32  matchLengthSum;
+    U32  matchSum;
+    U32  litLengthSum;
+    U32  litSum;
+    U32  offCodeSum;
+    U32  log2matchLengthSum;
+    U32  log2matchSum;
+    U32  log2litLengthSum;
+    U32  log2litSum;
+    U32  log2offCodeSum;
+    U32  factor;
+    U32  cachedPrice;
+    U32  cachedLitLength;
+    const BYTE* cachedLiterals;
+    ZSTDv07_stats_t stats;
+} seqStore_t;
+
+void ZSTDv07_seqToCodes(const seqStore_t* seqStorePtr, size_t const nbSeq);
+
+/* custom memory allocation functions */
+void* ZSTDv07_defaultAllocFunction(void* opaque, size_t size);
+void ZSTDv07_defaultFreeFunction(void* opaque, void* address);
+static const ZSTDv07_customMem defaultCustomMem = { ZSTDv07_defaultAllocFunction, ZSTDv07_defaultFreeFunction, NULL };
+
+#endif   /* ZSTDv07_CCOMMON_H_MODULE */
+/*
+    zstd - standard compression library
+    Copyright (C) 2014-2016, 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
+    modification, are permitted provided that the following conditions are
+    met:
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - zstd homepage : http://www.zstd.net
+*/
+
+/* ***************************************************************
+*  Tuning parameters
+*****************************************************************/
+/*!
+ * HEAPMODE :
+ * Select how default decompression function ZSTDv07_decompress() will allocate memory,
+ * in memory stack (0), or in memory heap (1, requires malloc())
+ */
+#ifndef ZSTDv07_HEAPMODE
+#  define ZSTDv07_HEAPMODE 1
+#endif
+
+
+/*-*******************************************************
+*  Compiler specifics
+*********************************************************/
+#ifdef _MSC_VER    /* Visual Studio */
+#  define FORCE_INLINE static __forceinline
+#  include <intrin.h>                    /* For Visual 2005 */
+#  pragma warning(disable : 4127)        /* disable: C4127: conditional expression is constant */
+#  pragma warning(disable : 4324)        /* disable: C4324: padded structure */
+#else
+#  ifdef __GNUC__
+#    define FORCE_INLINE static inline __attribute__((always_inline))
+#  else
+#    define FORCE_INLINE static inline
+#  endif
+#endif
+
+
+/*-*************************************
+*  Macros
+***************************************/
+#define ZSTDv07_isError ERR_isError   /* for inlining */
+#define FSEv07_isError  ERR_isError
+#define HUFv07_isError  ERR_isError
+
+
+/*_*******************************************************
+*  Memory operations
+**********************************************************/
+static void ZSTDv07_copy4(void* dst, const void* src) { memcpy(dst, src, 4); }
+
+
+/*-*************************************************************
+*   Context management
+***************************************************************/
+typedef enum { ZSTDds_getFrameHeaderSize, ZSTDds_decodeFrameHeader,
+               ZSTDds_decodeBlockHeader, ZSTDds_decompressBlock,
+               ZSTDds_decodeSkippableHeader, ZSTDds_skipFrame } ZSTDv07_dStage;
+
+struct ZSTDv07_DCtx_s
+{
+    FSEv07_DTable LLTable[FSEv07_DTABLE_SIZE_U32(LLFSELog)];
+    FSEv07_DTable OffTable[FSEv07_DTABLE_SIZE_U32(OffFSELog)];
+    FSEv07_DTable MLTable[FSEv07_DTABLE_SIZE_U32(MLFSELog)];
+    HUFv07_DTable hufTable[HUFv07_DTABLE_SIZE(HufLog)];  /* can accommodate HUFv07_decompress4X */
+    const void* previousDstEnd;
+    const void* base;
+    const void* vBase;
+    const void* dictEnd;
+    size_t expected;
+    U32 rep[3];
+    ZSTDv07_frameParams fParams;
+    blockType_t bType;   /* used in ZSTDv07_decompressContinue(), to transfer blockType between header decoding and block decoding stages */
+    ZSTDv07_dStage stage;
+    U32 litEntropy;
+    U32 fseEntropy;
+    XXH64_state_t xxhState;
+    size_t headerSize;
+    U32 dictID;
+    const BYTE* litPtr;
+    ZSTDv07_customMem customMem;
+    size_t litBufSize;
+    size_t litSize;
+    BYTE litBuffer[ZSTDv07_BLOCKSIZE_ABSOLUTEMAX + WILDCOPY_OVERLENGTH];
+    BYTE headerBuffer[ZSTDv07_FRAMEHEADERSIZE_MAX];
+};  /* typedef'd to ZSTDv07_DCtx within "zstd_static.h" */
+
+int ZSTDv07_isSkipFrame(ZSTDv07_DCtx* dctx);
+
+size_t ZSTDv07_sizeofDCtx (const ZSTDv07_DCtx* dctx) { return sizeof(*dctx); }
+
+size_t ZSTDv07_estimateDCtxSize(void) { return sizeof(ZSTDv07_DCtx); }
+
+size_t ZSTDv07_decompressBegin(ZSTDv07_DCtx* dctx)
+{
+    dctx->expected = ZSTDv07_frameHeaderSize_min;
+    dctx->stage = ZSTDds_getFrameHeaderSize;
+    dctx->previousDstEnd = NULL;
+    dctx->base = NULL;
+    dctx->vBase = NULL;
+    dctx->dictEnd = NULL;
+    dctx->hufTable[0] = (HUFv07_DTable)((HufLog)*0x1000001);
+    dctx->litEntropy = dctx->fseEntropy = 0;
+    dctx->dictID = 0;
+    { int i; for (i=0; i<ZSTDv07_REP_NUM; i++) dctx->rep[i] = repStartValue[i]; }
+    return 0;
+}
+
+ZSTDv07_DCtx* ZSTDv07_createDCtx_advanced(ZSTDv07_customMem customMem)
+{
+    ZSTDv07_DCtx* dctx;
+
+    if (!customMem.customAlloc && !customMem.customFree)
+        customMem = defaultCustomMem;
+
+    if (!customMem.customAlloc || !customMem.customFree)
+        return NULL;
+
+    dctx = (ZSTDv07_DCtx*) customMem.customAlloc(customMem.opaque, sizeof(ZSTDv07_DCtx));
+    if (!dctx) return NULL;
+    memcpy(&dctx->customMem, &customMem, sizeof(ZSTDv07_customMem));
+    ZSTDv07_decompressBegin(dctx);
+    return dctx;
+}
+
+ZSTDv07_DCtx* ZSTDv07_createDCtx(void)
+{
+    return ZSTDv07_createDCtx_advanced(defaultCustomMem);
+}
+
+size_t ZSTDv07_freeDCtx(ZSTDv07_DCtx* dctx)
+{
+    if (dctx==NULL) return 0;   /* support free on NULL */
+    dctx->customMem.customFree(dctx->customMem.opaque, dctx);
+    return 0;   /* reserved as a potential error code in the future */
+}
+
+void ZSTDv07_copyDCtx(ZSTDv07_DCtx* dstDCtx, const ZSTDv07_DCtx* srcDCtx)
+{
+    memcpy(dstDCtx, srcDCtx,
+           sizeof(ZSTDv07_DCtx) - (ZSTDv07_BLOCKSIZE_ABSOLUTEMAX+WILDCOPY_OVERLENGTH + ZSTDv07_frameHeaderSize_max));  /* no need to copy workspace */
+}
+
+
+/*-*************************************************************
+*   Decompression section
+***************************************************************/
+
+/* Frame format description
+   Frame Header -  [ Block Header - Block ] - Frame End
+   1) Frame Header
+      - 4 bytes - Magic Number : ZSTDv07_MAGICNUMBER (defined within zstd.h)
+      - 1 byte  - Frame Descriptor
+   2) Block Header
+      - 3 bytes, starting with a 2-bits descriptor
+                 Uncompressed, Compressed, Frame End, unused
+   3) Block
+      See Block Format Description
+   4) Frame End
+      - 3 bytes, compatible with Block Header
+*/
+
+
+/* Frame Header :
+
+   1 byte - FrameHeaderDescription :
+   bit 0-1 : dictID (0, 1, 2 or 4 bytes)
+   bit 2   : checksumFlag
+   bit 3   : reserved (must be zero)
+   bit 4   : reserved (unused, can be any value)
+   bit 5   : Single Segment (if 1, WindowLog byte is not present)
+   bit 6-7 : FrameContentFieldSize (0, 2, 4, or 8)
+             if (SkippedWindowLog && !FrameContentFieldsize) FrameContentFieldsize=1;
+
+   Optional : WindowLog (0 or 1 byte)
+   bit 0-2 : octal Fractional (1/8th)
+   bit 3-7 : Power of 2, with 0 = 1 KB (up to 2 TB)
+
+   Optional : dictID (0, 1, 2 or 4 bytes)
+   Automatic adaptation
+   0 : no dictID
+   1 : 1 - 255
+   2 : 256 - 65535
+   4 : all other values
+
+   Optional : content size (0, 1, 2, 4 or 8 bytes)
+   0 : unknown          (fcfs==0 and swl==0)
+   1 : 0-255 bytes      (fcfs==0 and swl==1)
+   2 : 256 - 65535+256  (fcfs==1)
+   4 : 0 - 4GB-1        (fcfs==2)
+   8 : 0 - 16EB-1       (fcfs==3)
+*/
+
+
+/* Compressed Block, format description
+
+   Block = Literal Section - Sequences Section
+   Prerequisite : size of (compressed) block, maximum size of regenerated data
+
+   1) Literal Section
+
+   1.1) Header : 1-5 bytes
+        flags: 2 bits
+            00 compressed by Huff0
+            01 unused
+            10 is Raw (uncompressed)
+            11 is Rle
+            Note : using 01 => Huff0 with precomputed table ?
+            Note : delta map ? => compressed ?
+
+   1.1.1) Huff0-compressed literal block : 3-5 bytes
+            srcSize < 1 KB => 3 bytes (2-2-10-10) => single stream
+            srcSize < 1 KB => 3 bytes (2-2-10-10)
+            srcSize < 16KB => 4 bytes (2-2-14-14)
+            else           => 5 bytes (2-2-18-18)
+            big endian convention
+
+   1.1.2) Raw (uncompressed) literal block header : 1-3 bytes
+        size :  5 bits: (IS_RAW<<6) + (0<<4) + size
+               12 bits: (IS_RAW<<6) + (2<<4) + (size>>8)
+                        size&255
+               20 bits: (IS_RAW<<6) + (3<<4) + (size>>16)
+                        size>>8&255
+                        size&255
+
+   1.1.3) Rle (repeated single byte) literal block header : 1-3 bytes
+        size :  5 bits: (IS_RLE<<6) + (0<<4) + size
+               12 bits: (IS_RLE<<6) + (2<<4) + (size>>8)
+                        size&255
+               20 bits: (IS_RLE<<6) + (3<<4) + (size>>16)
+                        size>>8&255
+                        size&255
+
+   1.1.4) Huff0-compressed literal block, using precomputed CTables : 3-5 bytes
+            srcSize < 1 KB => 3 bytes (2-2-10-10) => single stream
+            srcSize < 1 KB => 3 bytes (2-2-10-10)
+            srcSize < 16KB => 4 bytes (2-2-14-14)
+            else           => 5 bytes (2-2-18-18)
+            big endian convention
+
+        1- CTable available (stored into workspace ?)
+        2- Small input (fast heuristic ? Full comparison ? depend on clevel ?)
+
+
+   1.2) Literal block content
+
+   1.2.1) Huff0 block, using sizes from header
+        See Huff0 format
+
+   1.2.2) Huff0 block, using prepared table
+
+   1.2.3) Raw content
+
+   1.2.4) single byte
+
+
+   2) Sequences section
+      TO DO
+*/
+
+/** ZSTDv07_frameHeaderSize() :
+*   srcSize must be >= ZSTDv07_frameHeaderSize_min.
+*   @return : size of the Frame Header */
+static size_t ZSTDv07_frameHeaderSize(const void* src, size_t srcSize)
+{
+    if (srcSize < ZSTDv07_frameHeaderSize_min) return ERROR(srcSize_wrong);
+    {   BYTE const fhd = ((const BYTE*)src)[4];
+        U32 const dictID= fhd & 3;
+        U32 const directMode = (fhd >> 5) & 1;
+        U32 const fcsId = fhd >> 6;
+        return ZSTDv07_frameHeaderSize_min + !directMode + ZSTDv07_did_fieldSize[dictID] + ZSTDv07_fcs_fieldSize[fcsId]
+                + (directMode && !ZSTDv07_fcs_fieldSize[fcsId]);
+    }
+}
+
+
+/** ZSTDv07_getFrameParams() :
+*   decode Frame Header, or require larger `srcSize`.
+*   @return : 0, `fparamsPtr` is correctly filled,
+*            >0, `srcSize` is too small, result is expected `srcSize`,
+*             or an error code, which can be tested using ZSTDv07_isError() */
+size_t ZSTDv07_getFrameParams(ZSTDv07_frameParams* fparamsPtr, const void* src, size_t srcSize)
+{
+    const BYTE* ip = (const BYTE*)src;
+
+    if (srcSize < ZSTDv07_frameHeaderSize_min) return ZSTDv07_frameHeaderSize_min;
+    if (MEM_readLE32(src) != ZSTDv07_MAGICNUMBER) {
+        if ((MEM_readLE32(src) & 0xFFFFFFF0U) == ZSTDv07_MAGIC_SKIPPABLE_START) {
+            if (srcSize < ZSTDv07_skippableHeaderSize) return ZSTDv07_skippableHeaderSize; /* magic number + skippable frame length */
+            memset(fparamsPtr, 0, sizeof(*fparamsPtr));
+            fparamsPtr->frameContentSize = MEM_readLE32((const char *)src + 4);
+            fparamsPtr->windowSize = 0; /* windowSize==0 means a frame is skippable */
+            return 0;
+        }
+        return ERROR(prefix_unknown);
+    }
+
+    /* ensure there is enough `srcSize` to fully read/decode frame header */
+    { size_t const fhsize = ZSTDv07_frameHeaderSize(src, srcSize);
+      if (srcSize < fhsize) return fhsize; }
+
+    {   BYTE const fhdByte = ip[4];
+        size_t pos = 5;
+        U32 const dictIDSizeCode = fhdByte&3;
+        U32 const checksumFlag = (fhdByte>>2)&1;
+        U32 const directMode = (fhdByte>>5)&1;
+        U32 const fcsID = fhdByte>>6;
+        U32 const windowSizeMax = 1U << ZSTDv07_WINDOWLOG_MAX;
+        U32 windowSize = 0;
+        U32 dictID = 0;
+        U64 frameContentSize = 0;
+        if ((fhdByte & 0x08) != 0) return ERROR(frameParameter_unsupported);   /* reserved bits, which must be zero */
+        if (!directMode) {
+            BYTE const wlByte = ip[pos++];
+            U32 const windowLog = (wlByte >> 3) + ZSTDv07_WINDOWLOG_ABSOLUTEMIN;
+            if (windowLog > ZSTDv07_WINDOWLOG_MAX) return ERROR(frameParameter_unsupported);
+            windowSize = (1U << windowLog);
+            windowSize += (windowSize >> 3) * (wlByte&7);
+        }
+
+        switch(dictIDSizeCode)
+        {
+            default:   /* impossible */
+            case 0 : break;
+            case 1 : dictID = ip[pos]; pos++; break;
+            case 2 : dictID = MEM_readLE16(ip+pos); pos+=2; break;
+            case 3 : dictID = MEM_readLE32(ip+pos); pos+=4; break;
+        }
+        switch(fcsID)
+        {
+            default:   /* impossible */
+            case 0 : if (directMode) frameContentSize = ip[pos]; break;
+            case 1 : frameContentSize = MEM_readLE16(ip+pos)+256; break;
+            case 2 : frameContentSize = MEM_readLE32(ip+pos); break;
+            case 3 : frameContentSize = MEM_readLE64(ip+pos); break;
+        }
+        if (!windowSize) windowSize = (U32)frameContentSize;
+        if (windowSize > windowSizeMax) return ERROR(frameParameter_unsupported);
+        fparamsPtr->frameContentSize = frameContentSize;
+        fparamsPtr->windowSize = windowSize;
+        fparamsPtr->dictID = dictID;
+        fparamsPtr->checksumFlag = checksumFlag;
+    }
+    return 0;
+}
+
+
+/** ZSTDv07_getDecompressedSize() :
+*   compatible with legacy mode
+*   @return : decompressed size if known, 0 otherwise
+              note : 0 can mean any of the following :
+                   - decompressed size is not provided within frame header
+                   - frame header unknown / not supported
+                   - frame header not completely provided (`srcSize` too small) */
+unsigned long long ZSTDv07_getDecompressedSize(const void* src, size_t srcSize)
+{
+    {   ZSTDv07_frameParams fparams;
+        size_t const frResult = ZSTDv07_getFrameParams(&fparams, src, srcSize);
+        if (frResult!=0) return 0;
+        return fparams.frameContentSize;
+    }
+}
+
+
+/** ZSTDv07_decodeFrameHeader() :
+*   `srcSize` must be the size provided by ZSTDv07_frameHeaderSize().
+*   @return : 0 if success, or an error code, which can be tested using ZSTDv07_isError() */
+static size_t ZSTDv07_decodeFrameHeader(ZSTDv07_DCtx* dctx, const void* src, size_t srcSize)
+{
+    size_t const result = ZSTDv07_getFrameParams(&(dctx->fParams), src, srcSize);
+    if (dctx->fParams.dictID && (dctx->dictID != dctx->fParams.dictID)) return ERROR(dictionary_wrong);
+    if (dctx->fParams.checksumFlag) XXH64_reset(&dctx->xxhState, 0);
+    return result;
+}
+
+
+typedef struct
+{
+    blockType_t blockType;
+    U32 origSize;
+} blockProperties_t;
+
+/*! ZSTDv07_getcBlockSize() :
+*   Provides the size of compressed block from block header `src` */
+size_t ZSTDv07_getcBlockSize(const void* src, size_t srcSize, blockProperties_t* bpPtr)
+{
+    const BYTE* const in = (const BYTE* const)src;
+    U32 cSize;
+
+    if (srcSize < ZSTDv07_blockHeaderSize) return ERROR(srcSize_wrong);
+
+    bpPtr->blockType = (blockType_t)((*in) >> 6);
+    cSize = in[2] + (in[1]<<8) + ((in[0] & 7)<<16);
+    bpPtr->origSize = (bpPtr->blockType == bt_rle) ? cSize : 0;
+
+    if (bpPtr->blockType == bt_end) return 0;
+    if (bpPtr->blockType == bt_rle) return 1;
+    return cSize;
+}
+
+
+static size_t ZSTDv07_copyRawBlock(void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+{
+    if (srcSize > dstCapacity) return ERROR(dstSize_tooSmall);
+    memcpy(dst, src, srcSize);
+    return srcSize;
+}
+
+
+/*! ZSTDv07_decodeLiteralsBlock() :
+    @return : nb of bytes read from src (< srcSize ) */
+size_t ZSTDv07_decodeLiteralsBlock(ZSTDv07_DCtx* dctx,
+                          const void* src, size_t srcSize)   /* note : srcSize < BLOCKSIZE */
+{
+    const BYTE* const istart = (const BYTE*) src;
+
+    if (srcSize < MIN_CBLOCK_SIZE) return ERROR(corruption_detected);
+
+    switch((litBlockType_t)(istart[0]>> 6))
+    {
+    case lbt_huffman:
+        {   size_t litSize, litCSize, singleStream=0;
+            U32 lhSize = (istart[0] >> 4) & 3;
+            if (srcSize < 5) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for lhSize, + cSize (+nbSeq) */
+            switch(lhSize)
+            {
+            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */
+                /* 2 - 2 - 10 - 10 */
+                lhSize=3;
+                singleStream = istart[0] & 16;
+                litSize  = ((istart[0] & 15) << 6) + (istart[1] >> 2);
+                litCSize = ((istart[1] &  3) << 8) + istart[2];
+                break;
+            case 2:
+                /* 2 - 2 - 14 - 14 */
+                lhSize=4;
+                litSize  = ((istart[0] & 15) << 10) + (istart[1] << 2) + (istart[2] >> 6);
+                litCSize = ((istart[2] & 63) <<  8) + istart[3];
+                break;
+            case 3:
+                /* 2 - 2 - 18 - 18 */
+                lhSize=5;
+                litSize  = ((istart[0] & 15) << 14) + (istart[1] << 6) + (istart[2] >> 2);
+                litCSize = ((istart[2] &  3) << 16) + (istart[3] << 8) + istart[4];
+                break;
+            }
+            if (litSize > ZSTDv07_BLOCKSIZE_ABSOLUTEMAX) return ERROR(corruption_detected);
+            if (litCSize + lhSize > srcSize) return ERROR(corruption_detected);
+
+            if (HUFv07_isError(singleStream ?
+                            HUFv07_decompress1X2_DCtx(dctx->hufTable, dctx->litBuffer, litSize, istart+lhSize, litCSize) :
+                            HUFv07_decompress4X_hufOnly (dctx->hufTable, dctx->litBuffer, litSize, istart+lhSize, litCSize) ))
+                return ERROR(corruption_detected);
+
+            dctx->litPtr = dctx->litBuffer;
+            dctx->litBufSize = ZSTDv07_BLOCKSIZE_ABSOLUTEMAX+8;
+            dctx->litSize = litSize;
+            dctx->litEntropy = 1;
+            return litCSize + lhSize;
+        }
+    case lbt_repeat:
+        {   size_t litSize, litCSize;
+            U32 lhSize = ((istart[0]) >> 4) & 3;
+            if (lhSize != 1)  /* only case supported for now : small litSize, single stream */
+                return ERROR(corruption_detected);
+            if (dctx->litEntropy==0)
+                return ERROR(dictionary_corrupted);
+
+            /* 2 - 2 - 10 - 10 */
+            lhSize=3;
+            litSize  = ((istart[0] & 15) << 6) + (istart[1] >> 2);
+            litCSize = ((istart[1] &  3) << 8) + istart[2];
+            if (litCSize + lhSize > srcSize) return ERROR(corruption_detected);
+
+            {   size_t const errorCode = HUFv07_decompress1X4_usingDTable(dctx->litBuffer, litSize, istart+lhSize, litCSize, dctx->hufTable);
+                if (HUFv07_isError(errorCode)) return ERROR(corruption_detected);
+            }
+            dctx->litPtr = dctx->litBuffer;
+            dctx->litBufSize = ZSTDv07_BLOCKSIZE_ABSOLUTEMAX+WILDCOPY_OVERLENGTH;
+            dctx->litSize = litSize;
+            return litCSize + lhSize;
+        }
+    case lbt_raw:
+        {   size_t litSize;
+            U32 lhSize = ((istart[0]) >> 4) & 3;
+            switch(lhSize)
+            {
+            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */
+                lhSize=1;
+                litSize = istart[0] & 31;
+                break;
+            case 2:
+                litSize = ((istart[0] & 15) << 8) + istart[1];
+                break;
+            case 3:
+                litSize = ((istart[0] & 15) << 16) + (istart[1] << 8) + istart[2];
+                break;
+            }
+
+            if (lhSize+litSize+WILDCOPY_OVERLENGTH > srcSize) {  /* risk reading beyond src buffer with wildcopy */
+                if (litSize+lhSize > srcSize) return ERROR(corruption_detected);
+                memcpy(dctx->litBuffer, istart+lhSize, litSize);
+                dctx->litPtr = dctx->litBuffer;
+                dctx->litBufSize = ZSTDv07_BLOCKSIZE_ABSOLUTEMAX+8;
+                dctx->litSize = litSize;
+                return lhSize+litSize;
+            }
+            /* direct reference into compressed stream */
+            dctx->litPtr = istart+lhSize;
+            dctx->litBufSize = srcSize-lhSize;
+            dctx->litSize = litSize;
+            return lhSize+litSize;
+        }
+    case lbt_rle:
+        {   size_t litSize;
+            U32 lhSize = ((istart[0]) >> 4) & 3;
+            switch(lhSize)
+            {
+            case 0: case 1: default:   /* note : default is impossible, since lhSize into [0..3] */
+                lhSize = 1;
+                litSize = istart[0] & 31;
+                break;
+            case 2:
+                litSize = ((istart[0] & 15) << 8) + istart[1];
+                break;
+            case 3:
+                litSize = ((istart[0] & 15) << 16) + (istart[1] << 8) + istart[2];
+                if (srcSize<4) return ERROR(corruption_detected);   /* srcSize >= MIN_CBLOCK_SIZE == 3; here we need lhSize+1 = 4 */
+                break;
+            }
+            if (litSize > ZSTDv07_BLOCKSIZE_ABSOLUTEMAX) return ERROR(corruption_detected);
+            memset(dctx->litBuffer, istart[lhSize], litSize);
+            dctx->litPtr = dctx->litBuffer;
+            dctx->litBufSize = ZSTDv07_BLOCKSIZE_ABSOLUTEMAX+WILDCOPY_OVERLENGTH;
+            dctx->litSize = litSize;
+            return lhSize+1;
+        }
+    default:
+        return ERROR(corruption_detected);   /* impossible */
+    }
+}
+
+
+/*! ZSTDv07_buildSeqTable() :
+    @return : nb bytes read from src,
+              or an error code if it fails, testable with ZSTDv07_isError()
+*/
+size_t ZSTDv07_buildSeqTable(FSEv07_DTable* DTable, U32 type, U32 max, U32 maxLog,
+                                 const void* src, size_t srcSize,
+                                 const S16* defaultNorm, U32 defaultLog, U32 flagRepeatTable)
+{
+    switch(type)
+    {
+    case FSEv07_ENCODING_RLE :
+        if (!srcSize) return ERROR(srcSize_wrong);
+        if ( (*(const BYTE*)src) > max) return ERROR(corruption_detected);
+        FSEv07_buildDTable_rle(DTable, *(const BYTE*)src);   /* if *src > max, data is corrupted */
+        return 1;
+    case FSEv07_ENCODING_RAW :
+        FSEv07_buildDTable(DTable, defaultNorm, max, defaultLog);
+        return 0;
+    case FSEv07_ENCODING_STATIC:
+        if (!flagRepeatTable) return ERROR(corruption_detected);
+        return 0;
+    default :   /* impossible */
+    case FSEv07_ENCODING_DYNAMIC :
+        {   U32 tableLog;
+            S16 norm[MaxSeq+1];
+            size_t const headerSize = FSEv07_readNCount(norm, &max, &tableLog, src, srcSize);
+            if (FSEv07_isError(headerSize)) return ERROR(corruption_detected);
+            if (tableLog > maxLog) return ERROR(corruption_detected);
+            FSEv07_buildDTable(DTable, norm, max, tableLog);
+            return headerSize;
+    }   }
+}
+
+
+size_t ZSTDv07_decodeSeqHeaders(int* nbSeqPtr,
+                             FSEv07_DTable* DTableLL, FSEv07_DTable* DTableML, FSEv07_DTable* DTableOffb, U32 flagRepeatTable,
+                             const void* src, size_t srcSize)
+{
+    const BYTE* const istart = (const BYTE* const)src;
+    const BYTE* const iend = istart + srcSize;
+    const BYTE* ip = istart;
+
+    /* check */
+    if (srcSize < MIN_SEQUENCES_SIZE) return ERROR(srcSize_wrong);
+
+    /* SeqHead */
+    {   int nbSeq = *ip++;
+        if (!nbSeq) { *nbSeqPtr=0; return 1; }
+        if (nbSeq > 0x7F) {
+            if (nbSeq == 0xFF)
+                nbSeq = MEM_readLE16(ip) + LONGNBSEQ, ip+=2;
+            else
+                nbSeq = ((nbSeq-0x80)<<8) + *ip++;
+        }
+        *nbSeqPtr = nbSeq;
+    }
+
+    /* FSE table descriptors */
+    {   U32 const LLtype  = *ip >> 6;
+        U32 const OFtype = (*ip >> 4) & 3;
+        U32 const MLtype  = (*ip >> 2) & 3;
+        ip++;
+
+        /* check */
+        if (ip > iend-3) return ERROR(srcSize_wrong); /* min : all 3 are "raw", hence no header, but at least xxLog bits per type */
+
+        /* Build DTables */
+        {   size_t const llhSize = ZSTDv07_buildSeqTable(DTableLL, LLtype, MaxLL, LLFSELog, ip, iend-ip, LL_defaultNorm, LL_defaultNormLog, flagRepeatTable);
+            if (ZSTDv07_isError(llhSize)) return ERROR(corruption_detected);
+            ip += llhSize;
+        }
+        {   size_t const ofhSize = ZSTDv07_buildSeqTable(DTableOffb, OFtype, MaxOff, OffFSELog, ip, iend-ip, OF_defaultNorm, OF_defaultNormLog, flagRepeatTable);
+            if (ZSTDv07_isError(ofhSize)) return ERROR(corruption_detected);
+            ip += ofhSize;
+        }
+        {   size_t const mlhSize = ZSTDv07_buildSeqTable(DTableML, MLtype, MaxML, MLFSELog, ip, iend-ip, ML_defaultNorm, ML_defaultNormLog, flagRepeatTable);
+            if (ZSTDv07_isError(mlhSize)) return ERROR(corruption_detected);
+            ip += mlhSize;
+    }   }
+
+    return ip-istart;
+}
+
+
+typedef struct {
+    size_t litLength;
+    size_t matchLength;
+    size_t offset;
+} seq_t;
+
+typedef struct {
+    BITv07_DStream_t DStream;
+    FSEv07_DState_t stateLL;
+    FSEv07_DState_t stateOffb;
+    FSEv07_DState_t stateML;
+    size_t prevOffset[ZSTDv07_REP_INIT];
+} seqState_t;
+
+
+static seq_t ZSTDv07_decodeSequence(seqState_t* seqState)
+{
+    seq_t seq;
+
+    U32 const llCode = FSEv07_peekSymbol(&(seqState->stateLL));
+    U32 const mlCode = FSEv07_peekSymbol(&(seqState->stateML));
+    U32 const ofCode = FSEv07_peekSymbol(&(seqState->stateOffb));   /* <= maxOff, by table construction */
+
+    U32 const llBits = LL_bits[llCode];
+    U32 const mlBits = ML_bits[mlCode];
+    U32 const ofBits = ofCode;
+    U32 const totalBits = llBits+mlBits+ofBits;
+
+    static const U32 LL_base[MaxLL+1] = {
+                             0,  1,  2,  3,  4,  5,  6,  7,  8,  9,   10,    11,    12,    13,    14,     15,
+                            16, 18, 20, 22, 24, 28, 32, 40, 48, 64, 0x80, 0x100, 0x200, 0x400, 0x800, 0x1000,
+                            0x2000, 0x4000, 0x8000, 0x10000 };
+
+    static const U32 ML_base[MaxML+1] = {
+                             3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13,   14,    15,    16,    17,    18,
+                            19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,   30,    31,    32,    33,    34,
+                            35, 37, 39, 41, 43, 47, 51, 59, 67, 83, 99, 0x83, 0x103, 0x203, 0x403, 0x803,
+                            0x1003, 0x2003, 0x4003, 0x8003, 0x10003 };
+
+    static const U32 OF_base[MaxOff+1] = {
+                 0,        1,       1,       5,     0xD,     0x1D,     0x3D,     0x7D,
+                 0xFD,   0x1FD,   0x3FD,   0x7FD,   0xFFD,   0x1FFD,   0x3FFD,   0x7FFD,
+                 0xFFFD, 0x1FFFD, 0x3FFFD, 0x7FFFD, 0xFFFFD, 0x1FFFFD, 0x3FFFFD, 0x7FFFFD,
+                 0xFFFFFD, 0x1FFFFFD, 0x3FFFFFD, 0x7FFFFFD, 0xFFFFFFD };
+
+    /* sequence */
+    {   size_t offset;
+        if (!ofCode)
+            offset = 0;
+        else {
+            offset = OF_base[ofCode] + BITv07_readBits(&(seqState->DStream), ofBits);   /* <=  (ZSTDv07_WINDOWLOG_MAX-1) bits */
+            if (MEM_32bits()) BITv07_reloadDStream(&(seqState->DStream));
+        }
+
+        if (ofCode <= 1) {
+            if ((llCode == 0) & (offset <= 1)) offset = 1-offset;
+            if (offset) {
+                size_t const temp = seqState->prevOffset[offset];
+                if (offset != 1) seqState->prevOffset[2] = seqState->prevOffset[1];
+                seqState->prevOffset[1] = seqState->prevOffset[0];
+                seqState->prevOffset[0] = offset = temp;
+            } else {
+                offset = seqState->prevOffset[0];
+            }
+        } else {
+            seqState->prevOffset[2] = seqState->prevOffset[1];
+            seqState->prevOffset[1] = seqState->prevOffset[0];
+            seqState->prevOffset[0] = offset;
+        }
+        seq.offset = offset;
+    }
+
+    seq.matchLength = ML_base[mlCode] + ((mlCode>31) ? BITv07_readBits(&(seqState->DStream), mlBits) : 0);   /* <=  16 bits */
+    if (MEM_32bits() && (mlBits+llBits>24)) BITv07_reloadDStream(&(seqState->DStream));
+
+    seq.litLength = LL_base[llCode] + ((llCode>15) ? BITv07_readBits(&(seqState->DStream), llBits) : 0);   /* <=  16 bits */
+    if (MEM_32bits() ||
+       (totalBits > 64 - 7 - (LLFSELog+MLFSELog+OffFSELog)) ) BITv07_reloadDStream(&(seqState->DStream));
+
+    /* ANS state update */
+    FSEv07_updateState(&(seqState->stateLL), &(seqState->DStream));   /* <=  9 bits */
+    FSEv07_updateState(&(seqState->stateML), &(seqState->DStream));   /* <=  9 bits */
+    if (MEM_32bits()) BITv07_reloadDStream(&(seqState->DStream));     /* <= 18 bits */
+    FSEv07_updateState(&(seqState->stateOffb), &(seqState->DStream)); /* <=  8 bits */
+
+    return seq;
+}
+
+
+static
+size_t ZSTDv07_execSequence(BYTE* op,
+                                BYTE* const oend, seq_t sequence,
+                                const BYTE** litPtr, const BYTE* const litLimit_w,
+                                const BYTE* const base, const BYTE* const vBase, const BYTE* const dictEnd)
+{
+    BYTE* const oLitEnd = op + sequence.litLength;
+    size_t const sequenceLength = sequence.litLength + sequence.matchLength;
+    BYTE* const oMatchEnd = op + sequenceLength;   /* risk : address space overflow (32-bits) */
+    BYTE* const oend_w = oend-WILDCOPY_OVERLENGTH;
+    const BYTE* const iLitEnd = *litPtr + sequence.litLength;
+    const BYTE* match = oLitEnd - sequence.offset;
+
+    /* check */
+    if ((oLitEnd>oend_w) | (oMatchEnd>oend)) return ERROR(dstSize_tooSmall); /* last match must start at a minimum distance of WILDCOPY_OVERLENGTH from oend */
+    if (iLitEnd > litLimit_w) return ERROR(corruption_detected);   /* over-read beyond lit buffer */
+
+    /* copy Literals */
+    ZSTDv07_wildcopy(op, *litPtr, sequence.litLength);   /* note : since oLitEnd <= oend-WILDCOPY_OVERLENGTH, no risk of overwrite beyond oend */
+    op = oLitEnd;
+    *litPtr = iLitEnd;   /* update for next sequence */
+
+    /* copy Match */
+    if (sequence.offset > (size_t)(oLitEnd - base)) {
+        /* offset beyond prefix */
+        if (sequence.offset > (size_t)(oLitEnd - vBase)) return ERROR(corruption_detected);
+        match = dictEnd - (base-match);
+        if (match + sequence.matchLength <= dictEnd) {
+            memmove(oLitEnd, match, sequence.matchLength);
+            return sequenceLength;
+        }
+        /* span extDict & currentPrefixSegment */
+        {   size_t const length1 = dictEnd - match;
+            memmove(oLitEnd, match, length1);
+            op = oLitEnd + length1;
+            sequence.matchLength -= length1;
+            match = base;
+    }   }
+
+    /* match within prefix */
+    if (sequence.offset < 8) {
+        /* close range match, overlap */
+        static const U32 dec32table[] = { 0, 1, 2, 1, 4, 4, 4, 4 };   /* added */
+        static const int dec64table[] = { 8, 8, 8, 7, 8, 9,10,11 };   /* substracted */
+        int const sub2 = dec64table[sequence.offset];
+        op[0] = match[0];
+        op[1] = match[1];
+        op[2] = match[2];
+        op[3] = match[3];
+        match += dec32table[sequence.offset];
+        ZSTDv07_copy4(op+4, match);
+        match -= sub2;
+    } else {
+        ZSTDv07_copy8(op, match);
+    }
+    op += 8; match += 8;
+
+    if (oMatchEnd > oend-(16-MINMATCH)) {
+        if (op < oend_w) {
+            ZSTDv07_wildcopy(op, match, oend_w - op);
+            match += oend_w - op;
+            op = oend_w;
+        }
+        while (op < oMatchEnd) *op++ = *match++;
+    } else {
+        ZSTDv07_wildcopy(op, match, sequence.matchLength-8);   /* works even if matchLength < 8 */
+    }
+    return sequenceLength;
+}
+
+
+static size_t ZSTDv07_decompressSequences(
+                               ZSTDv07_DCtx* dctx,
+                               void* dst, size_t maxDstSize,
+                         const void* seqStart, size_t seqSize)
+{
+    const BYTE* ip = (const BYTE*)seqStart;
+    const BYTE* const iend = ip + seqSize;
+    BYTE* const ostart = (BYTE* const)dst;
+    BYTE* const oend = ostart + maxDstSize;
+    BYTE* op = ostart;
+    const BYTE* litPtr = dctx->litPtr;
+    const BYTE* const litLimit_w = litPtr + dctx->litBufSize - WILDCOPY_OVERLENGTH;
+    const BYTE* const litEnd = litPtr + dctx->litSize;
+    FSEv07_DTable* DTableLL = dctx->LLTable;
+    FSEv07_DTable* DTableML = dctx->MLTable;
+    FSEv07_DTable* DTableOffb = dctx->OffTable;
+    const BYTE* const base = (const BYTE*) (dctx->base);
+    const BYTE* const vBase = (const BYTE*) (dctx->vBase);
+    const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd);
+    int nbSeq;
+
+    /* Build Decoding Tables */
+    {   size_t const seqHSize = ZSTDv07_decodeSeqHeaders(&nbSeq, DTableLL, DTableML, DTableOffb, dctx->fseEntropy, ip, seqSize);
+        if (ZSTDv07_isError(seqHSize)) return seqHSize;
+        ip += seqHSize;
+    }
+
+    /* Regen sequences */
+    if (nbSeq) {
+        seqState_t seqState;
+        dctx->fseEntropy = 1;
+        { U32 i; for (i=0; i<ZSTDv07_REP_INIT; i++) seqState.prevOffset[i] = dctx->rep[i]; }
+        { size_t const errorCode = BITv07_initDStream(&(seqState.DStream), ip, iend-ip);
+          if (ERR_isError(errorCode)) return ERROR(corruption_detected); }
+        FSEv07_initDState(&(seqState.stateLL), &(seqState.DStream), DTableLL);
+        FSEv07_initDState(&(seqState.stateOffb), &(seqState.DStream), DTableOffb);
+        FSEv07_initDState(&(seqState.stateML), &(seqState.DStream), DTableML);
+
+        for ( ; (BITv07_reloadDStream(&(seqState.DStream)) <= BITv07_DStream_completed) && nbSeq ; ) {
+            nbSeq--;
+            {   seq_t const sequence = ZSTDv07_decodeSequence(&seqState);
+                size_t const oneSeqSize = ZSTDv07_execSequence(op, oend, sequence, &litPtr, litLimit_w, base, vBase, dictEnd);
+                if (ZSTDv07_isError(oneSeqSize)) return oneSeqSize;
+                op += oneSeqSize;
+        }   }
+
+        /* check if reached exact end */
+        if (nbSeq) return ERROR(corruption_detected);
+        /* save reps for next block */
+        { U32 i; for (i=0; i<ZSTDv07_REP_INIT; i++) dctx->rep[i] = (U32)(seqState.prevOffset[i]); }
+    }
+
+    /* last literal segment */
+    {   size_t const lastLLSize = litEnd - litPtr;
+        //if (litPtr > litEnd) return ERROR(corruption_detected);   /* too many literals already used */
+        if (lastLLSize > (size_t)(oend-op)) return ERROR(dstSize_tooSmall);
+        memcpy(op, litPtr, lastLLSize);
+        op += lastLLSize;
+    }
+
+    return op-ostart;
+}
+
+
+static void ZSTDv07_checkContinuity(ZSTDv07_DCtx* dctx, const void* dst)
+{
+    if (dst != dctx->previousDstEnd) {   /* not contiguous */
+        dctx->dictEnd = dctx->previousDstEnd;
+        dctx->vBase = (const char*)dst - ((const char*)(dctx->previousDstEnd) - (const char*)(dctx->base));
+        dctx->base = dst;
+        dctx->previousDstEnd = dst;
+    }
+}
+
+
+static size_t ZSTDv07_decompressBlock_internal(ZSTDv07_DCtx* dctx,
+                            void* dst, size_t dstCapacity,
+                      const void* src, size_t srcSize)
+{   /* blockType == blockCompressed */
+    const BYTE* ip = (const BYTE*)src;
+
+    if (srcSize >= ZSTDv07_BLOCKSIZE_ABSOLUTEMAX) return ERROR(srcSize_wrong);
+
+    /* Decode literals sub-block */
+    {   size_t const litCSize = ZSTDv07_decodeLiteralsBlock(dctx, src, srcSize);
+        if (ZSTDv07_isError(litCSize)) return litCSize;
+        ip += litCSize;
+        srcSize -= litCSize;
+    }
+    return ZSTDv07_decompressSequences(dctx, dst, dstCapacity, ip, srcSize);
+}
+
+
+size_t ZSTDv07_decompressBlock(ZSTDv07_DCtx* dctx,
+                            void* dst, size_t dstCapacity,
+                      const void* src, size_t srcSize)
+{
+    size_t dSize;
+    ZSTDv07_checkContinuity(dctx, dst);
+    dSize = ZSTDv07_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize);
+    dctx->previousDstEnd = (char*)dst + dSize;
+    return dSize;
+}
+
+
+/** ZSTDv07_insertBlock() :
+    insert `src` block into `dctx` history. Useful to track uncompressed blocks. */
+ZSTDLIB_API size_t ZSTDv07_insertBlock(ZSTDv07_DCtx* dctx, const void* blockStart, size_t blockSize)
+{
+    ZSTDv07_checkContinuity(dctx, blockStart);
+    dctx->previousDstEnd = (const char*)blockStart + blockSize;
+    return blockSize;
+}
+
+
+size_t ZSTDv07_generateNxBytes(void* dst, size_t dstCapacity, BYTE byte, size_t length)
+{
+    if (length > dstCapacity) return ERROR(dstSize_tooSmall);
+    memset(dst, byte, length);
+    return length;
+}
+
+
+/*! ZSTDv07_decompressFrame() :
+*   `dctx` must be properly initialized */
+static size_t ZSTDv07_decompressFrame(ZSTDv07_DCtx* dctx,
+                                 void* dst, size_t dstCapacity,
+                                 const void* src, size_t srcSize)
+{
+    const BYTE* ip = (const BYTE*)src;
+    const BYTE* const iend = ip + srcSize;
+    BYTE* const ostart = (BYTE* const)dst;
+    BYTE* const oend = ostart + dstCapacity;
+    BYTE* op = ostart;
+    size_t remainingSize = srcSize;
+
+    /* check */
+    if (srcSize < ZSTDv07_frameHeaderSize_min+ZSTDv07_blockHeaderSize) return ERROR(srcSize_wrong);
+
+    /* Frame Header */
+    {   size_t const frameHeaderSize = ZSTDv07_frameHeaderSize(src, ZSTDv07_frameHeaderSize_min);
+        if (ZSTDv07_isError(frameHeaderSize)) return frameHeaderSize;
+        if (srcSize < frameHeaderSize+ZSTDv07_blockHeaderSize) return ERROR(srcSize_wrong);
+        if (ZSTDv07_decodeFrameHeader(dctx, src, frameHeaderSize)) return ERROR(corruption_detected);
+        ip += frameHeaderSize; remainingSize -= frameHeaderSize;
+    }
+
+    /* Loop on each block */
+    while (1) {
+        size_t decodedSize;
+        blockProperties_t blockProperties;
+        size_t const cBlockSize = ZSTDv07_getcBlockSize(ip, iend-ip, &blockProperties);
+        if (ZSTDv07_isError(cBlockSize)) return cBlockSize;
+
+        ip += ZSTDv07_blockHeaderSize;
+        remainingSize -= ZSTDv07_blockHeaderSize;
+        if (cBlockSize > remainingSize) return ERROR(srcSize_wrong);
+
+        switch(blockProperties.blockType)
+        {
+        case bt_compressed:
+            decodedSize = ZSTDv07_decompressBlock_internal(dctx, op, oend-op, ip, cBlockSize);
+            break;
+        case bt_raw :
+            decodedSize = ZSTDv07_copyRawBlock(op, oend-op, ip, cBlockSize);
+            break;
+        case bt_rle :
+            decodedSize = ZSTDv07_generateNxBytes(op, oend-op, *ip, blockProperties.origSize);
+            break;
+        case bt_end :
+            /* end of frame */
+            if (remainingSize) return ERROR(srcSize_wrong);
+            decodedSize = 0;
+            break;
+        default:
+            return ERROR(GENERIC);   /* impossible */
+        }
+        if (blockProperties.blockType == bt_end) break;   /* bt_end */
+
+        if (ZSTDv07_isError(decodedSize)) return decodedSize;
+        if (dctx->fParams.checksumFlag) XXH64_update(&dctx->xxhState, op, decodedSize);
+        op += decodedSize;
+        ip += cBlockSize;
+        remainingSize -= cBlockSize;
+    }
+
+    return op-ostart;
+}
+
+
+/*! ZSTDv07_decompress_usingPreparedDCtx() :
+*   Same as ZSTDv07_decompress_usingDict, but using a reference context `preparedDCtx`, where dictionary has been loaded.
+*   It avoids reloading the dictionary each time.
+*   `preparedDCtx` must have been properly initialized using ZSTDv07_decompressBegin_usingDict().
+*   Requires 2 contexts : 1 for reference (preparedDCtx), which will not be modified, and 1 to run the decompression operation (dctx) */
+size_t ZSTDv07_decompress_usingPreparedDCtx(ZSTDv07_DCtx* dctx, const ZSTDv07_DCtx* refDCtx,
+                                         void* dst, size_t dstCapacity,
+                                   const void* src, size_t srcSize)
+{
+    ZSTDv07_copyDCtx(dctx, refDCtx);
+    ZSTDv07_checkContinuity(dctx, dst);
+    return ZSTDv07_decompressFrame(dctx, dst, dstCapacity, src, srcSize);
+}
+
+
+size_t ZSTDv07_decompress_usingDict(ZSTDv07_DCtx* dctx,
+                                 void* dst, size_t dstCapacity,
+                                 const void* src, size_t srcSize,
+                                 const void* dict, size_t dictSize)
+{
+    ZSTDv07_decompressBegin_usingDict(dctx, dict, dictSize);
+    ZSTDv07_checkContinuity(dctx, dst);
+    return ZSTDv07_decompressFrame(dctx, dst, dstCapacity, src, srcSize);
+}
+
+
+size_t ZSTDv07_decompressDCtx(ZSTDv07_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+{
+    return ZSTDv07_decompress_usingDict(dctx, dst, dstCapacity, src, srcSize, NULL, 0);
+}
+
+
+size_t ZSTDv07_decompress(void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+{
+#if defined(ZSTDv07_HEAPMODE) && (ZSTDv07_HEAPMODE==1)
+    size_t regenSize;
+    ZSTDv07_DCtx* const dctx = ZSTDv07_createDCtx();
+    if (dctx==NULL) return ERROR(memory_allocation);
+    regenSize = ZSTDv07_decompressDCtx(dctx, dst, dstCapacity, src, srcSize);
+    ZSTDv07_freeDCtx(dctx);
+    return regenSize;
+#else   /* stack mode */
+    ZSTDv07_DCtx dctx;
+    return ZSTDv07_decompressDCtx(&dctx, dst, dstCapacity, src, srcSize);
+#endif
+}
+
+
+/*_******************************
+*  Streaming Decompression API
+********************************/
+size_t ZSTDv07_nextSrcSizeToDecompress(ZSTDv07_DCtx* dctx)
+{
+    return dctx->expected;
+}
+
+int ZSTDv07_isSkipFrame(ZSTDv07_DCtx* dctx)
+{
+    return dctx->stage == ZSTDds_skipFrame;
+}
+
+/** ZSTDv07_decompressContinue() :
+*   @return : nb of bytes generated into `dst` (necessarily <= `dstCapacity)
+*             or an error code, which can be tested using ZSTDv07_isError() */
+size_t ZSTDv07_decompressContinue(ZSTDv07_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+{
+    /* Sanity check */
+    if (srcSize != dctx->expected) return ERROR(srcSize_wrong);
+    if (dstCapacity) ZSTDv07_checkContinuity(dctx, dst);
+
+    switch (dctx->stage)
+    {
+    case ZSTDds_getFrameHeaderSize :
+        if (srcSize != ZSTDv07_frameHeaderSize_min) return ERROR(srcSize_wrong);   /* impossible */
+        if ((MEM_readLE32(src) & 0xFFFFFFF0U) == ZSTDv07_MAGIC_SKIPPABLE_START) {
+            memcpy(dctx->headerBuffer, src, ZSTDv07_frameHeaderSize_min);
+            dctx->expected = ZSTDv07_skippableHeaderSize - ZSTDv07_frameHeaderSize_min; /* magic number + skippable frame length */
+            dctx->stage = ZSTDds_decodeSkippableHeader;
+            return 0;
+        }
+        dctx->headerSize = ZSTDv07_frameHeaderSize(src, ZSTDv07_frameHeaderSize_min);
+        if (ZSTDv07_isError(dctx->headerSize)) return dctx->headerSize;
+        memcpy(dctx->headerBuffer, src, ZSTDv07_frameHeaderSize_min);
+        if (dctx->headerSize > ZSTDv07_frameHeaderSize_min) {
+            dctx->expected = dctx->headerSize - ZSTDv07_frameHeaderSize_min;
+            dctx->stage = ZSTDds_decodeFrameHeader;
+            return 0;
+        }
+        dctx->expected = 0;   /* not necessary to copy more */
+
+    case ZSTDds_decodeFrameHeader:
+        {   size_t result;
+            memcpy(dctx->headerBuffer + ZSTDv07_frameHeaderSize_min, src, dctx->expected);
+            result = ZSTDv07_decodeFrameHeader(dctx, dctx->headerBuffer, dctx->headerSize);
+            if (ZSTDv07_isError(result)) return result;
+            dctx->expected = ZSTDv07_blockHeaderSize;
+            dctx->stage = ZSTDds_decodeBlockHeader;
+            return 0;
+        }
+    case ZSTDds_decodeBlockHeader:
+        {   blockProperties_t bp;
+            size_t const cBlockSize = ZSTDv07_getcBlockSize(src, ZSTDv07_blockHeaderSize, &bp);
+            if (ZSTDv07_isError(cBlockSize)) return cBlockSize;
+            if (bp.blockType == bt_end) {
+                if (dctx->fParams.checksumFlag) {
+                    U64 const h64 = XXH64_digest(&dctx->xxhState);
+                    U32 const h32 = (U32)(h64>>11) & ((1<<22)-1);
+                    const BYTE* const ip = (const BYTE*)src;
+                    U32 const check32 = ip[2] + (ip[1] << 8) + ((ip[0] & 0x3F) << 16);
+                    if (check32 != h32) return ERROR(checksum_wrong);
+                }
+                dctx->expected = 0;
+                dctx->stage = ZSTDds_getFrameHeaderSize;
+            } else {
+                dctx->expected = cBlockSize;
+                dctx->bType = bp.blockType;
+                dctx->stage = ZSTDds_decompressBlock;
+            }
+            return 0;
+        }
+    case ZSTDds_decompressBlock:
+        {   size_t rSize;
+            switch(dctx->bType)
+            {
+            case bt_compressed:
+                rSize = ZSTDv07_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize);
+                break;
+            case bt_raw :
+                rSize = ZSTDv07_copyRawBlock(dst, dstCapacity, src, srcSize);
+                break;
+            case bt_rle :
+                return ERROR(GENERIC);   /* not yet handled */
+                break;
+            case bt_end :   /* should never happen (filtered at phase 1) */
+                rSize = 0;
+                break;
+            default:
+                return ERROR(GENERIC);   /* impossible */
+            }
+            dctx->stage = ZSTDds_decodeBlockHeader;
+            dctx->expected = ZSTDv07_blockHeaderSize;
+            dctx->previousDstEnd = (char*)dst + rSize;
+            if (ZSTDv07_isError(rSize)) return rSize;
+            if (dctx->fParams.checksumFlag) XXH64_update(&dctx->xxhState, dst, rSize);
+            return rSize;
+        }
+    case ZSTDds_decodeSkippableHeader:
+        {   memcpy(dctx->headerBuffer + ZSTDv07_frameHeaderSize_min, src, dctx->expected);
+            dctx->expected = MEM_readLE32(dctx->headerBuffer + 4);
+            dctx->stage = ZSTDds_skipFrame;
+            return 0;
+        }
+    case ZSTDds_skipFrame:
+        {   dctx->expected = 0;
+            dctx->stage = ZSTDds_getFrameHeaderSize;
+            return 0;
+        }
+    default:
+        return ERROR(GENERIC);   /* impossible */
+    }
+}
+
+
+static size_t ZSTDv07_refDictContent(ZSTDv07_DCtx* dctx, const void* dict, size_t dictSize)
+{
+    dctx->dictEnd = dctx->previousDstEnd;
+    dctx->vBase = (const char*)dict - ((const char*)(dctx->previousDstEnd) - (const char*)(dctx->base));
+    dctx->base = dict;
+    dctx->previousDstEnd = (const char*)dict + dictSize;
+    return 0;
+}
+
+static size_t ZSTDv07_loadEntropy(ZSTDv07_DCtx* dctx, const void* const dict, size_t const dictSize)
+{
+    const BYTE* dictPtr = (const BYTE*)dict;
+    const BYTE* const dictEnd = dictPtr + dictSize;
+
+    {   size_t const hSize = HUFv07_readDTableX4(dctx->hufTable, dict, dictSize);
+        if (HUFv07_isError(hSize)) return ERROR(dictionary_corrupted);
+        dictPtr += hSize;
+    }
+
+    {   short offcodeNCount[MaxOff+1];
+        U32 offcodeMaxValue=MaxOff, offcodeLog=OffFSELog;
+        size_t const offcodeHeaderSize = FSEv07_readNCount(offcodeNCount, &offcodeMaxValue, &offcodeLog, dictPtr, dictEnd-dictPtr);
+        if (FSEv07_isError(offcodeHeaderSize)) return ERROR(dictionary_corrupted);
+        { size_t const errorCode = FSEv07_buildDTable(dctx->OffTable, offcodeNCount, offcodeMaxValue, offcodeLog);
+          if (FSEv07_isError(errorCode)) return ERROR(dictionary_corrupted); }
+        dictPtr += offcodeHeaderSize;
+    }
+
+    {   short matchlengthNCount[MaxML+1];
+        unsigned matchlengthMaxValue = MaxML, matchlengthLog = MLFSELog;
+        size_t const matchlengthHeaderSize = FSEv07_readNCount(matchlengthNCount, &matchlengthMaxValue, &matchlengthLog, dictPtr, dictEnd-dictPtr);
+        if (FSEv07_isError(matchlengthHeaderSize)) return ERROR(dictionary_corrupted);
+        { size_t const errorCode = FSEv07_buildDTable(dctx->MLTable, matchlengthNCount, matchlengthMaxValue, matchlengthLog);
+          if (FSEv07_isError(errorCode)) return ERROR(dictionary_corrupted); }
+        dictPtr += matchlengthHeaderSize;
+    }
+
+    {   short litlengthNCount[MaxLL+1];
+        unsigned litlengthMaxValue = MaxLL, litlengthLog = LLFSELog;
+        size_t const litlengthHeaderSize = FSEv07_readNCount(litlengthNCount, &litlengthMaxValue, &litlengthLog, dictPtr, dictEnd-dictPtr);
+        if (FSEv07_isError(litlengthHeaderSize)) return ERROR(dictionary_corrupted);
+        { size_t const errorCode = FSEv07_buildDTable(dctx->LLTable, litlengthNCount, litlengthMaxValue, litlengthLog);
+          if (FSEv07_isError(errorCode)) return ERROR(dictionary_corrupted); }
+        dictPtr += litlengthHeaderSize;
+    }
+
+    if (dictPtr+12 > dictEnd) return ERROR(dictionary_corrupted);
+    dctx->rep[0] = MEM_readLE32(dictPtr+0); if (dctx->rep[0] >= dictSize) return ERROR(dictionary_corrupted);
+    dctx->rep[1] = MEM_readLE32(dictPtr+4); if (dctx->rep[1] >= dictSize) return ERROR(dictionary_corrupted);
+    dctx->rep[2] = MEM_readLE32(dictPtr+8); if (dctx->rep[2] >= dictSize) return ERROR(dictionary_corrupted);
+    dictPtr += 12;
+
+    dctx->litEntropy = dctx->fseEntropy = 1;
+    return dictPtr - (const BYTE*)dict;
+}
+
+static size_t ZSTDv07_decompress_insertDictionary(ZSTDv07_DCtx* dctx, const void* dict, size_t dictSize)
+{
+    if (dictSize < 8) return ZSTDv07_refDictContent(dctx, dict, dictSize);
+    {   U32 const magic = MEM_readLE32(dict);
+        if (magic != ZSTDv07_DICT_MAGIC) {
+            return ZSTDv07_refDictContent(dctx, dict, dictSize);   /* pure content mode */
+    }   }
+    dctx->dictID = MEM_readLE32((const char*)dict + 4);
+
+    /* load entropy tables */
+    dict = (const char*)dict + 8;
+    dictSize -= 8;
+    {   size_t const eSize = ZSTDv07_loadEntropy(dctx, dict, dictSize);
+        if (ZSTDv07_isError(eSize)) return ERROR(dictionary_corrupted);
+        dict = (const char*)dict + eSize;
+        dictSize -= eSize;
+    }
+
+    /* reference dictionary content */
+    return ZSTDv07_refDictContent(dctx, dict, dictSize);
+}
+
+
+size_t ZSTDv07_decompressBegin_usingDict(ZSTDv07_DCtx* dctx, const void* dict, size_t dictSize)
+{
+    { size_t const errorCode = ZSTDv07_decompressBegin(dctx);
+      if (ZSTDv07_isError(errorCode)) return errorCode; }
+
+    if (dict && dictSize) {
+        size_t const errorCode = ZSTDv07_decompress_insertDictionary(dctx, dict, dictSize);
+        if (ZSTDv07_isError(errorCode)) return ERROR(dictionary_corrupted);
+    }
+
+    return 0;
+}
+
+
+struct ZSTDv07_DDict_s {
+    void* dict;
+    size_t dictSize;
+    ZSTDv07_DCtx* refContext;
+};  /* typedef'd tp ZSTDv07_CDict within zstd.h */
+
+ZSTDv07_DDict* ZSTDv07_createDDict_advanced(const void* dict, size_t dictSize, ZSTDv07_customMem customMem)
+{
+    if (!customMem.customAlloc && !customMem.customFree)
+        customMem = defaultCustomMem;
+
+    if (!customMem.customAlloc || !customMem.customFree)
+        return NULL;
+
+    {   ZSTDv07_DDict* const ddict = (ZSTDv07_DDict*) customMem.customAlloc(customMem.opaque, sizeof(*ddict));
+        void* const dictContent = customMem.customAlloc(customMem.opaque, dictSize);
+        ZSTDv07_DCtx* const dctx = ZSTDv07_createDCtx_advanced(customMem);
+
+        if (!dictContent || !ddict || !dctx) {
+            customMem.customFree(customMem.opaque, dictContent);
+            customMem.customFree(customMem.opaque, ddict);
+            customMem.customFree(customMem.opaque, dctx);
+            return NULL;
+        }
+
+        memcpy(dictContent, dict, dictSize);
+        {   size_t const errorCode = ZSTDv07_decompressBegin_usingDict(dctx, dictContent, dictSize);
+            if (ZSTDv07_isError(errorCode)) {
+                customMem.customFree(customMem.opaque, dictContent);
+                customMem.customFree(customMem.opaque, ddict);
+                customMem.customFree(customMem.opaque, dctx);
+                return NULL;
+        }   }
+
+        ddict->dict = dictContent;
+        ddict->dictSize = dictSize;
+        ddict->refContext = dctx;
+        return ddict;
+    }
+}
+
+/*! ZSTDv07_createDDict() :
+*   Create a digested dictionary, ready to start decompression without startup delay.
+*   `dict` can be released after `ZSTDv07_DDict` creation */
+ZSTDv07_DDict* ZSTDv07_createDDict(const void* dict, size_t dictSize)
+{
+    ZSTDv07_customMem const allocator = { NULL, NULL, NULL };
+    return ZSTDv07_createDDict_advanced(dict, dictSize, allocator);
+}
+
+size_t ZSTDv07_freeDDict(ZSTDv07_DDict* ddict)
+{
+    ZSTDv07_freeFunction const cFree = ddict->refContext->customMem.customFree;
+    void* const opaque = ddict->refContext->customMem.opaque;
+    ZSTDv07_freeDCtx(ddict->refContext);
+    cFree(opaque, ddict->dict);
+    cFree(opaque, ddict);
+    return 0;
+}
+
+/*! ZSTDv07_decompress_usingDDict() :
+*   Decompression using a pre-digested Dictionary
+*   Use dictionary without significant overhead. */
+ZSTDLIB_API size_t ZSTDv07_decompress_usingDDict(ZSTDv07_DCtx* dctx,
+                                           void* dst, size_t dstCapacity,
+                                     const void* src, size_t srcSize,
+                                     const ZSTDv07_DDict* ddict)
+{
+    return ZSTDv07_decompress_usingPreparedDCtx(dctx, ddict->refContext,
+                                           dst, dstCapacity,
+                                           src, srcSize);
+}
+/*
+    Buffered version of Zstd compression library
+    Copyright (C) 2015-2016, 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
+    modification, are permitted provided that the following conditions are
+    met:
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - zstd homepage : http://www.zstd.net/
+*/
+
+
+
+/*-***************************************************************************
+*  Streaming decompression howto
+*
+*  A ZBUFFv07_DCtx object is required to track streaming operations.
+*  Use ZBUFFv07_createDCtx() and ZBUFFv07_freeDCtx() to create/release resources.
+*  Use ZBUFFv07_decompressInit() to start a new decompression operation,
+*   or ZBUFFv07_decompressInitDictionary() if decompression requires a dictionary.
+*  Note that ZBUFFv07_DCtx objects can be re-init multiple times.
+*
+*  Use ZBUFFv07_decompressContinue() repetitively to consume your input.
+*  *srcSizePtr and *dstCapacityPtr can be any size.
+*  The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr.
+*  Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again.
+*  The content of @dst will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters, or change @dst.
+*  @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to help latency),
+*            or 0 when a frame is completely decoded,
+*            or an error code, which can be tested using ZBUFFv07_isError().
+*
+*  Hint : recommended buffer sizes (not compulsory) : ZBUFFv07_recommendedDInSize() and ZBUFFv07_recommendedDOutSize()
+*  output : ZBUFFv07_recommendedDOutSize==128 KB block size is the internal unit, it ensures it's always possible to write a full block when decoded.
+*  input  : ZBUFFv07_recommendedDInSize == 128KB + 3;
+*           just follow indications from ZBUFFv07_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 .
+* *******************************************************************************/
+
+typedef enum { ZBUFFds_init, ZBUFFds_loadHeader,
+               ZBUFFds_read, ZBUFFds_load, ZBUFFds_flush } ZBUFFv07_dStage;
+
+/* *** Resource management *** */
+struct ZBUFFv07_DCtx_s {
+    ZSTDv07_DCtx* zd;
+    ZSTDv07_frameParams fParams;
+    ZBUFFv07_dStage stage;
+    char*  inBuff;
+    size_t inBuffSize;
+    size_t inPos;
+    char*  outBuff;
+    size_t outBuffSize;
+    size_t outStart;
+    size_t outEnd;
+    size_t blockSize;
+    BYTE headerBuffer[ZSTDv07_FRAMEHEADERSIZE_MAX];
+    size_t lhSize;
+    ZSTDv07_customMem customMem;
+};   /* typedef'd to ZBUFFv07_DCtx within "zstd_buffered.h" */
+
+ZSTDLIB_API ZBUFFv07_DCtx* ZBUFFv07_createDCtx_advanced(ZSTDv07_customMem customMem);
+
+ZBUFFv07_DCtx* ZBUFFv07_createDCtx(void)
+{
+    return ZBUFFv07_createDCtx_advanced(defaultCustomMem);
+}
+
+ZBUFFv07_DCtx* ZBUFFv07_createDCtx_advanced(ZSTDv07_customMem customMem)
+{
+    ZBUFFv07_DCtx* zbd;
+
+    if (!customMem.customAlloc && !customMem.customFree)
+        customMem = defaultCustomMem;
+
+    if (!customMem.customAlloc || !customMem.customFree)
+        return NULL;
+
+    zbd = (ZBUFFv07_DCtx*)customMem.customAlloc(customMem.opaque, sizeof(ZBUFFv07_DCtx));
+    if (zbd==NULL) return NULL;
+    memset(zbd, 0, sizeof(ZBUFFv07_DCtx));
+    memcpy(&zbd->customMem, &customMem, sizeof(ZSTDv07_customMem));
+    zbd->zd = ZSTDv07_createDCtx_advanced(customMem);
+    if (zbd->zd == NULL) { ZBUFFv07_freeDCtx(zbd); return NULL; }
+    zbd->stage = ZBUFFds_init;
+    return zbd;
+}
+
+size_t ZBUFFv07_freeDCtx(ZBUFFv07_DCtx* zbd)
+{
+    if (zbd==NULL) return 0;   /* support free on null */
+    ZSTDv07_freeDCtx(zbd->zd);
+    if (zbd->inBuff) zbd->customMem.customFree(zbd->customMem.opaque, zbd->inBuff);
+    if (zbd->outBuff) zbd->customMem.customFree(zbd->customMem.opaque, zbd->outBuff);
+    zbd->customMem.customFree(zbd->customMem.opaque, zbd);
+    return 0;
+}
+
+
+/* *** Initialization *** */
+
+size_t ZBUFFv07_decompressInitDictionary(ZBUFFv07_DCtx* zbd, const void* dict, size_t dictSize)
+{
+    zbd->stage = ZBUFFds_loadHeader;
+    zbd->lhSize = zbd->inPos = zbd->outStart = zbd->outEnd = 0;
+    return ZSTDv07_decompressBegin_usingDict(zbd->zd, dict, dictSize);
+}
+
+size_t ZBUFFv07_decompressInit(ZBUFFv07_DCtx* zbd)
+{
+    return ZBUFFv07_decompressInitDictionary(zbd, NULL, 0);
+}
+
+
+/* internal util function */
+MEM_STATIC size_t ZBUFFv07_limitCopy(void* dst, size_t dstCapacity, const void* src, size_t srcSize)
+{
+    size_t const length = MIN(dstCapacity, srcSize);
+    memcpy(dst, src, length);
+    return length;
+}
+
+
+/* *** Decompression *** */
+
+size_t ZBUFFv07_decompressContinue(ZBUFFv07_DCtx* zbd,
+                                void* dst, size_t* dstCapacityPtr,
+                          const void* src, size_t* srcSizePtr)
+{
+    const char* const istart = (const char*)src;
+    const char* const iend = istart + *srcSizePtr;
+    const char* ip = istart;
+    char* const ostart = (char*)dst;
+    char* const oend = ostart + *dstCapacityPtr;
+    char* op = ostart;
+    U32 notDone = 1;
+
+    while (notDone) {
+        switch(zbd->stage)
+        {
+        case ZBUFFds_init :
+            return ERROR(init_missing);
+
+        case ZBUFFds_loadHeader :
+            {   size_t const hSize = ZSTDv07_getFrameParams(&(zbd->fParams), zbd->headerBuffer, zbd->lhSize);
+                if (hSize != 0) {
+                    size_t const toLoad = hSize - zbd->lhSize;   /* if hSize!=0, hSize > zbd->lhSize */
+                    if (ZSTDv07_isError(hSize)) return hSize;
+                    if (toLoad > (size_t)(iend-ip)) {   /* not enough input to load full header */
+                        memcpy(zbd->headerBuffer + zbd->lhSize, ip, iend-ip);
+                        zbd->lhSize += iend-ip;
+                        *dstCapacityPtr = 0;
+                        return (hSize - zbd->lhSize) + ZSTDv07_blockHeaderSize;   /* remaining header bytes + next block header */
+                    }
+                    memcpy(zbd->headerBuffer + zbd->lhSize, ip, toLoad); zbd->lhSize = hSize; ip += toLoad;
+                    break;
+            }   }
+
+            /* Consume header */
+            {   size_t const h1Size = ZSTDv07_nextSrcSizeToDecompress(zbd->zd);  /* == ZSTDv07_frameHeaderSize_min */
+                size_t const h1Result = ZSTDv07_decompressContinue(zbd->zd, NULL, 0, zbd->headerBuffer, h1Size);
+                if (ZSTDv07_isError(h1Result)) return h1Result;
+                if (h1Size < zbd->lhSize) {   /* long header */
+                    size_t const h2Size = ZSTDv07_nextSrcSizeToDecompress(zbd->zd);
+                    size_t const h2Result = ZSTDv07_decompressContinue(zbd->zd, NULL, 0, zbd->headerBuffer+h1Size, h2Size);
+                    if (ZSTDv07_isError(h2Result)) return h2Result;
+            }   }
+
+            zbd->fParams.windowSize = MAX(zbd->fParams.windowSize, 1U << ZSTDv07_WINDOWLOG_ABSOLUTEMIN);
+
+            /* Frame header instruct buffer sizes */
+            {   size_t const blockSize = MIN(zbd->fParams.windowSize, ZSTDv07_BLOCKSIZE_ABSOLUTEMAX);
+                zbd->blockSize = blockSize;
+                if (zbd->inBuffSize < blockSize) {
+                    zbd->customMem.customFree(zbd->customMem.opaque, zbd->inBuff);
+                    zbd->inBuffSize = blockSize;
+                    zbd->inBuff = (char*)zbd->customMem.customAlloc(zbd->customMem.opaque, blockSize);
+                    if (zbd->inBuff == NULL) return ERROR(memory_allocation);
+                }
+                {   size_t const neededOutSize = zbd->fParams.windowSize + blockSize;
+                    if (zbd->outBuffSize < neededOutSize) {
+                        zbd->customMem.customFree(zbd->customMem.opaque, zbd->outBuff);
+                        zbd->outBuffSize = neededOutSize;
+                        zbd->outBuff = (char*)zbd->customMem.customAlloc(zbd->customMem.opaque, neededOutSize);
+                        if (zbd->outBuff == NULL) return ERROR(memory_allocation);
+            }   }   }
+            zbd->stage = ZBUFFds_read;
+
+        case ZBUFFds_read:
+            {   size_t const neededInSize = ZSTDv07_nextSrcSizeToDecompress(zbd->zd);
+                if (neededInSize==0) {  /* end of frame */
+                    zbd->stage = ZBUFFds_init;
+                    notDone = 0;
+                    break;
+                }
+                if ((size_t)(iend-ip) >= neededInSize) {  /* decode directly from src */
+                    const int isSkipFrame = ZSTDv07_isSkipFrame(zbd->zd);
+                    size_t const decodedSize = ZSTDv07_decompressContinue(zbd->zd,
+                        zbd->outBuff + zbd->outStart, (isSkipFrame ? 0 : zbd->outBuffSize - zbd->outStart),
+                        ip, neededInSize);
+                    if (ZSTDv07_isError(decodedSize)) return decodedSize;
+                    ip += neededInSize;
+                    if (!decodedSize && !isSkipFrame) break;   /* this was just a header */
+                    zbd->outEnd = zbd->outStart +  decodedSize;
+                    zbd->stage = ZBUFFds_flush;
+                    break;
+                }
+                if (ip==iend) { notDone = 0; break; }   /* no more input */
+                zbd->stage = ZBUFFds_load;
+            }
+
+        case ZBUFFds_load:
+            {   size_t const neededInSize = ZSTDv07_nextSrcSizeToDecompress(zbd->zd);
+                size_t const toLoad = neededInSize - zbd->inPos;   /* should always be <= remaining space within inBuff */
+                size_t loadedSize;
+                if (toLoad > zbd->inBuffSize - zbd->inPos) return ERROR(corruption_detected);   /* should never happen */
+                loadedSize = ZBUFFv07_limitCopy(zbd->inBuff + zbd->inPos, toLoad, ip, iend-ip);
+                ip += loadedSize;
+                zbd->inPos += loadedSize;
+                if (loadedSize < toLoad) { notDone = 0; break; }   /* not enough input, wait for more */
+
+                /* decode loaded input */
+                {  const int isSkipFrame = ZSTDv07_isSkipFrame(zbd->zd);
+                   size_t const decodedSize = ZSTDv07_decompressContinue(zbd->zd,
+                        zbd->outBuff + zbd->outStart, zbd->outBuffSize - zbd->outStart,
+                        zbd->inBuff, neededInSize);
+                    if (ZSTDv07_isError(decodedSize)) return decodedSize;
+                    zbd->inPos = 0;   /* input is consumed */
+                    if (!decodedSize && !isSkipFrame) { zbd->stage = ZBUFFds_read; break; }   /* this was just a header */
+                    zbd->outEnd = zbd->outStart +  decodedSize;
+                    zbd->stage = ZBUFFds_flush;
+                    // break; /* ZBUFFds_flush follows */
+            }   }
+
+        case ZBUFFds_flush:
+            {   size_t const toFlushSize = zbd->outEnd - zbd->outStart;
+                size_t const flushedSize = ZBUFFv07_limitCopy(op, oend-op, zbd->outBuff + zbd->outStart, toFlushSize);
+                op += flushedSize;
+                zbd->outStart += flushedSize;
+                if (flushedSize == toFlushSize) {
+                    zbd->stage = ZBUFFds_read;
+                    if (zbd->outStart + zbd->blockSize > zbd->outBuffSize)
+                        zbd->outStart = zbd->outEnd = 0;
+                    break;
+                }
+                /* cannot flush everything */
+                notDone = 0;
+                break;
+            }
+        default: return ERROR(GENERIC);   /* impossible */
+    }   }
+
+    /* result */
+    *srcSizePtr = ip-istart;
+    *dstCapacityPtr = op-ostart;
+    {   size_t nextSrcSizeHint = ZSTDv07_nextSrcSizeToDecompress(zbd->zd);
+        nextSrcSizeHint -= zbd->inPos;   /* already loaded*/
+        return nextSrcSizeHint;
+    }
+}
+
+
+
+/* *************************************
+*  Tool functions
+***************************************/
+size_t ZBUFFv07_recommendedDInSize(void)  { return ZSTDv07_BLOCKSIZE_ABSOLUTEMAX + ZSTDv07_blockHeaderSize /* block header size*/ ; }
+size_t ZBUFFv07_recommendedDOutSize(void) { return ZSTDv07_BLOCKSIZE_ABSOLUTEMAX; }
diff --git a/C/zstd/zstd_v07.h b/C/zstd/zstd_v07.h
new file mode 100644
index 00000000..162566cd
--- /dev/null
+++ b/C/zstd/zstd_v07.h
@@ -0,0 +1,196 @@
+/*
+    zstd_v07 - decoder for 0.7 format
+    Header File
+    Copyright (C) 2014-2016, 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
+    modification, are permitted provided that the following conditions are
+    met:
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following disclaimer
+    in the documentation and/or other materials provided with the
+    distribution.
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    You can contact the author at :
+    - zstd source repository : https://github.com/Cyan4973/zstd
+*/
+#ifndef ZSTDv07_H_235446
+#define ZSTDv07_H_235446
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+/*======  Dependency  ======*/
+#include <stddef.h>   /* size_t */
+
+
+/*======  Export for Windows  ======*/
+/*!
+*  ZSTDv07_DLL_EXPORT :
+*  Enable exporting of functions when building a Windows DLL
+*/
+#if defined(_WIN32) && defined(ZSTDv07_DLL_EXPORT) && (ZSTDv07_DLL_EXPORT==1)
+#  define ZSTDLIB_API __declspec(dllexport)
+#else
+#  define ZSTDLIB_API
+#endif
+
+
+
+/* *************************************
+*  Simple API
+***************************************/
+/*! ZSTDv07_getDecompressedSize() :
+*   @return : decompressed size if known, 0 otherwise.
+       note 1 : if `0`, follow up with ZSTDv07_getFrameParams() to know precise failure cause.
+       note 2 : decompressed size could be wrong or intentionally modified !
+                always ensure results fit within application's authorized limits */
+unsigned long long ZSTDv07_getDecompressedSize(const void* src, size_t srcSize);
+
+/*! ZSTDv07_decompress() :
+    `compressedSize` : must be _exact_ size of compressed input, otherwise decompression will fail.
+    `dstCapacity` must be equal or larger than originalSize.
+    @return : the number of bytes decompressed into `dst` (<= `dstCapacity`),
+              or an errorCode if it fails (which can be tested using ZSTDv07_isError()) */
+ZSTDLIB_API size_t ZSTDv07_decompress( void* dst, size_t dstCapacity,
+                              const void* src, size_t compressedSize);
+
+/*======  Helper functions  ======*/
+ZSTDLIB_API unsigned    ZSTDv07_isError(size_t code);          /*!< tells if a `size_t` function result is an error code */
+ZSTDLIB_API const char* ZSTDv07_getErrorName(size_t code);     /*!< provides readable string from an error code */
+
+
+/*-*************************************
+*  Explicit memory management
+***************************************/
+/** Decompression context */
+typedef struct ZSTDv07_DCtx_s ZSTDv07_DCtx;
+ZSTDLIB_API ZSTDv07_DCtx* ZSTDv07_createDCtx(void);
+ZSTDLIB_API size_t     ZSTDv07_freeDCtx(ZSTDv07_DCtx* dctx);      /*!< @return : errorCode */
+
+/** ZSTDv07_decompressDCtx() :
+*   Same as ZSTDv07_decompress(), requires an allocated ZSTDv07_DCtx (see ZSTDv07_createDCtx()) */
+ZSTDLIB_API size_t ZSTDv07_decompressDCtx(ZSTDv07_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+
+
+/*-************************
+*  Simple dictionary API
+***************************/
+/*! ZSTDv07_decompress_usingDict() :
+*   Decompression using a pre-defined Dictionary content (see dictBuilder).
+*   Dictionary must be identical to the one used during compression.
+*   Note : This function load the dictionary, resulting in a significant startup time */
+ZSTDLIB_API size_t ZSTDv07_decompress_usingDict(ZSTDv07_DCtx* dctx,
+                                             void* dst, size_t dstCapacity,
+                                       const void* src, size_t srcSize,
+                                       const void* dict,size_t dictSize);
+
+
+/*-**************************
+*  Advanced Dictionary API
+****************************/
+/*! ZSTDv07_createDDict() :
+*   Create a digested dictionary, ready to start decompression operation without startup delay.
+*   `dict` can be released after creation */
+typedef struct ZSTDv07_DDict_s ZSTDv07_DDict;
+ZSTDLIB_API ZSTDv07_DDict* ZSTDv07_createDDict(const void* dict, size_t dictSize);
+ZSTDLIB_API size_t      ZSTDv07_freeDDict(ZSTDv07_DDict* ddict);
+
+/*! ZSTDv07_decompress_usingDDict() :
+*   Decompression using a pre-digested Dictionary
+*   Faster startup than ZSTDv07_decompress_usingDict(), recommended when same dictionary is used multiple times. */
+ZSTDLIB_API size_t ZSTDv07_decompress_usingDDict(ZSTDv07_DCtx* dctx,
+                                              void* dst, size_t dstCapacity,
+                                        const void* src, size_t srcSize,
+                                        const ZSTDv07_DDict* ddict);
+
+typedef struct {
+    unsigned long long frameContentSize;
+    unsigned windowSize;
+    unsigned dictID;
+    unsigned checksumFlag;
+} ZSTDv07_frameParams;
+
+ZSTDLIB_API size_t ZSTDv07_getFrameParams(ZSTDv07_frameParams* fparamsPtr, const void* src, size_t srcSize);   /**< doesn't consume input */
+
+
+
+
+/* *************************************
+*  Streaming functions
+***************************************/
+typedef struct ZBUFFv07_DCtx_s ZBUFFv07_DCtx;
+ZSTDLIB_API ZBUFFv07_DCtx* ZBUFFv07_createDCtx(void);
+ZSTDLIB_API size_t      ZBUFFv07_freeDCtx(ZBUFFv07_DCtx* dctx);
+
+ZSTDLIB_API size_t ZBUFFv07_decompressInit(ZBUFFv07_DCtx* dctx);
+ZSTDLIB_API size_t ZBUFFv07_decompressInitDictionary(ZBUFFv07_DCtx* dctx, const void* dict, size_t dictSize);
+
+ZSTDLIB_API size_t ZBUFFv07_decompressContinue(ZBUFFv07_DCtx* dctx,
+                                            void* dst, size_t* dstCapacityPtr,
+                                      const void* src, size_t* srcSizePtr);
+
+/*-***************************************************************************
+*  Streaming decompression howto
+*
+*  A ZBUFFv07_DCtx object is required to track streaming operations.
+*  Use ZBUFFv07_createDCtx() and ZBUFFv07_freeDCtx() to create/release resources.
+*  Use ZBUFFv07_decompressInit() to start a new decompression operation,
+*   or ZBUFFv07_decompressInitDictionary() if decompression requires a dictionary.
+*  Note that ZBUFFv07_DCtx objects can be re-init multiple times.
+*
+*  Use ZBUFFv07_decompressContinue() repetitively to consume your input.
+*  *srcSizePtr and *dstCapacityPtr can be any size.
+*  The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr.
+*  Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again.
+*  The content of `dst` will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters, or change `dst`.
+*  @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to help latency),
+*            or 0 when a frame is completely decoded,
+*            or an error code, which can be tested using ZBUFFv07_isError().
+*
+*  Hint : recommended buffer sizes (not compulsory) : ZBUFFv07_recommendedDInSize() and ZBUFFv07_recommendedDOutSize()
+*  output : ZBUFFv07_recommendedDOutSize== 128 KB block size is the internal unit, it ensures it's always possible to write a full block when decoded.
+*  input  : ZBUFFv07_recommendedDInSize == 128KB + 3;
+*           just follow indications from ZBUFFv07_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 .
+* *******************************************************************************/
+
+
+/* *************************************
+*  Tool functions
+***************************************/
+ZSTDLIB_API unsigned ZBUFFv07_isError(size_t errorCode);
+ZSTDLIB_API const char* ZBUFFv07_getErrorName(size_t errorCode);
+
+/** Functions below provide recommended buffer sizes for Compression or Decompression operations.
+*   These sizes are just hints, they tend to offer better latency */
+ZSTDLIB_API size_t ZBUFFv07_recommendedDInSize(void);
+ZSTDLIB_API size_t ZBUFFv07_recommendedDOutSize(void);
+
+
+/*-*************************************
+*  Constants
+***************************************/
+#define ZSTDv07_MAGICNUMBER            0xFD2FB527   /* v0.7 */
+
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif  /* ZSTDv07_H_235446 */
diff --git a/CPP/7zip/7zip.mak b/CPP/7zip/7zip.mak
index 88e7a588..71475553 100644
--- a/CPP/7zip/7zip.mak
+++ b/CPP/7zip/7zip.mak
@@ -174,7 +174,7 @@ $(C_OBJS): ../../../../C/$(*B).c
 !ENDIF
 
 !IFDEF ZSTD_OBJS
-$(ZSTD_OBJS): ../../../../C/ZStd/$(*B).c
+$(ZSTD_OBJS): ../../../../C/zstd/$(*B).c
 	$(COMPL_O2)
 !ENDIF
 
@@ -240,7 +240,7 @@ $(ZSTD_OBJS): ../../../../C/ZStd/$(*B).c
 	$(COMPLB_O2)
 {../../../../C}.c{$O}.obj::
 	$(CCOMPLB)
-{../../../../C/ZStd}.c{$O}.obj::
+{../../../../C/zstd}.c{$O}.obj::
 	$(CCOMPLB)
 
 !ENDIF
diff --git a/CPP/7zip/Bundles/Format7z/makefile b/CPP/7zip/Bundles/Format7z/makefile
index 989702e6..1a689fa4 100644
--- a/CPP/7zip/Bundles/Format7z/makefile
+++ b/CPP/7zip/Bundles/Format7z/makefile
@@ -1,8 +1,8 @@
 PROG = 7za.dll
 DEF_FILE = ../../Archive/Archive2.def
-CFLAGS = $(CFLAGS) \
-  -DDEFLATE_EXTRACT_ONLY \
-  -DBZIP2_EXTRACT_ONLY \
+CFLAGS = $(CFLAGS)
+#  -DDEFLATE_EXTRACT_ONLY \
+#  -DBZIP2_EXTRACT_ONLY \
 
 COMMON_OBJS = \
   $O\CRC.obj \
@@ -55,6 +55,7 @@ AR_COMMON_OBJS = \
   $O\OutStreamWithCRC.obj \
   $O\ParseProperties.obj \
 
+
 7Z_OBJS = \
   $O\7zCompressionMode.obj \
   $O\7zDecode.obj \
@@ -71,6 +72,7 @@ AR_COMMON_OBJS = \
   $O\7zUpdate.obj \
   $O\7zRegister.obj \
 
+
 COMPRESS_OBJS = \
   $O\CodecExports.obj \
   $O\Bcj2Coder.obj \
@@ -82,10 +84,12 @@ COMPRESS_OBJS = \
   $O\BranchRegister.obj \
   $O\ByteSwap.obj \
   $O\BZip2Crc.obj \
+  $O\BZip2Encoder.obj \
   $O\BZip2Decoder.obj \
   $O\BZip2Register.obj \
   $O\CopyCoder.obj \
   $O\CopyRegister.obj \
+  $O\DeflateEncoder.obj \
   $O\DeflateDecoder.obj \
   $O\DeflateRegister.obj \
   $O\DeltaFilter.obj \
@@ -99,9 +103,6 @@ COMPRESS_OBJS = \
   $O\PpmdDecoder.obj \
   $O\PpmdEncoder.obj \
   $O\PpmdRegister.obj \
-  $O\ZStdDecoder.obj \
-  $O\ZStdEncoder.obj \
-  $O\ZStdRegister.obj \
 
 CRYPTO_OBJS = \
   $O\7zAes.obj \
@@ -135,20 +136,13 @@ C_OBJS = \
   $O\Sort.obj \
   $O\Threads.obj \
 
-ZSTD_OBJS = \
-  $O\entropy_common.obj \
-  $O\fse_compress.obj \
-  $O\fse_decompress.obj \
-  $O\huf_compress.obj \
-  $O\huf_decompress.obj \
-  $O\zbuff_compress.obj \
-  $O\zbuff_decompress.obj \
-  $O\zstd_common.obj \
-  $O\zstd_compress.obj \
-  $O\zstd_decompress.obj \
-  $O\zstd_v05.obj \
-
 !include "../../Aes.mak"
 !include "../../Crc.mak"
+!include "../../zstd.mak"
+ZSTD_OBJS = $(ZSTD_OBJS) \
+  $O\fse_compress.obj \
+  $O\huf_compress.obj \
+  $O\zbuff_compress.obj \
+  $O\zstd_compress.obj \
 
 !include "../../7zip.mak"
diff --git a/CPP/7zip/Bundles/Format7zF/makefile b/CPP/7zip/Bundles/Format7zF/makefile
index 1e79c071..7b1112f2 100644
--- a/CPP/7zip/Bundles/Format7zF/makefile
+++ b/CPP/7zip/Bundles/Format7zF/makefile
@@ -1,7 +1,7 @@
 PROG = 7z.dll
 DEF_FILE = ../../Archive/Archive2.def
 CFLAGS = $(CFLAGS) \
-  -DEXTERNAL_CODECS \
+  -DEXTERNAL_CODECS -DZSTD_LEGACY \
 
 !IFNDEF UNDER_CE
 CFLAGS = $(CFLAGS) -D_7ZIP_LARGE_PAGES
@@ -11,27 +11,20 @@ CFLAGS = $(CFLAGS) -D_7ZIP_LARGE_PAGES
 
 COMPRESS_OBJS = $(COMPRESS_OBJS) \
   $O\CodecExports.obj \
-  $O\ZstdDecoder.obj \
-  $O\ZstdEncoder.obj \
-  $O\ZstdRegister.obj \
 
 AR_OBJS = $(AR_OBJS) \
   $O\ArchiveExports.obj \
   $O\DllExports2.obj \
 
-ZSTD_OBJS = \
-  $O\entropy_common.obj \
+
+!include "../../zstd.mak"
+ZSTD_OBJS = $(ZSTD_OBJS) \
   $O\fse_compress.obj \
-  $O\fse_decompress.obj \
   $O\huf_compress.obj \
-  $O\huf_decompress.obj \
   $O\zbuff_compress.obj \
-  $O\zbuff_decompress.obj \
-  $O\zstd_common.obj \
   $O\zstd_compress.obj \
-  $O\zstd_decompress.obj \
-  $O\zstd_v05.obj \
+  $O\zstd_v07.obj \
   $O\zstd_v06.obj \
-  $O\xxhash.obj \
+  $O\zstd_v05.obj \
 
 !include "../../7zip.mak"
diff --git a/CPP/7zip/Bundles/Format7zZStd/StdAfx.cpp b/CPP/7zip/Bundles/Format7zZStd/StdAfx.cpp
deleted file mode 100644
index c6d3b1fa..00000000
--- a/CPP/7zip/Bundles/Format7zZStd/StdAfx.cpp
+++ /dev/null
@@ -1,3 +0,0 @@
-// StdAfx.cpp
-
-#include "StdAfx.h"
diff --git a/CPP/7zip/Bundles/Format7zZStd/StdAfx.h b/CPP/7zip/Bundles/Format7zZStd/StdAfx.h
deleted file mode 100644
index 59d9ac15..00000000
--- a/CPP/7zip/Bundles/Format7zZStd/StdAfx.h
+++ /dev/null
@@ -1,8 +0,0 @@
-// StdAfx.h
-
-#ifndef __STDAFX_H
-#define __STDAFX_H
-
-#include "../../../Common/Common.h"
-
-#endif
diff --git a/CPP/7zip/Bundles/Format7zZStd/makefile b/CPP/7zip/Bundles/Format7zZStd/makefile
deleted file mode 100644
index c0d28855..00000000
--- a/CPP/7zip/Bundles/Format7zZStd/makefile
+++ /dev/null
@@ -1,158 +0,0 @@
-MY_STATIC_LINK=1
-PROG = 7z.dll
-DEF_FILE = ../../Archive/Archive2.def
-CFLAGS = $(CFLAGS) -DEXTERNAL_CODECS
-
-COMMON_OBJS = \
-  $O\CRC.obj \
-  $O\CrcReg.obj \
-  $O\IntToString.obj \
-  $O\NewHandler.obj \
-  $O\MyString.obj \
-  $O\Sha256Reg.obj \
-  $O\StringConvert.obj \
-  $O\StringToInt.obj \
-  $O\MyVector.obj \
-  $O\Wildcard.obj \
-
-WIN_OBJS = \
-  $O\FileDir.obj \
-  $O\FileFind.obj \
-  $O\FileIO.obj \
-  $O\FileName.obj \
-  $O\PropVariant.obj \
-  $O\Synchronization.obj \
-  $O\System.obj \
-
-7ZIP_COMMON_OBJS = \
-  $O\CreateCoder.obj \
-  $O\CWrappers.obj \
-  $O\InBuffer.obj \
-  $O\InOutTempBuffer.obj \
-  $O\FilterCoder.obj \
-  $O\LimitedStreams.obj \
-  $O\MethodId.obj \
-  $O\MethodProps.obj \
-  $O\OutBuffer.obj \
-  $O\ProgressUtils.obj \
-  $O\PropId.obj \
-  $O\StreamBinder.obj \
-  $O\StreamObjects.obj \
-  $O\StreamUtils.obj \
-  $O\UniqBlocks.obj \
-  $O\VirtThread.obj \
-
-AR_OBJS = \
-  $O\ArchiveExports.obj \
-  $O\DllExports2.obj \
-
-AR_COMMON_OBJS = \
-  $O\CoderMixer2.obj \
-  $O\HandlerOut.obj \
-  $O\InStreamWithCRC.obj \
-  $O\ItemNameUtils.obj \
-  $O\OutStreamWithCRC.obj \
-  $O\ParseProperties.obj \
-
-
-7Z_OBJS = \
-  $O\7zCompressionMode.obj \
-  $O\7zDecode.obj \
-  $O\7zEncode.obj \
-  $O\7zExtract.obj \
-  $O\7zFolderInStream.obj \
-  $O\7zHandler.obj \
-  $O\7zHandlerOut.obj \
-  $O\7zHeader.obj \
-  $O\7zIn.obj \
-  $O\7zOut.obj \
-  $O\7zProperties.obj \
-  $O\7zSpecStream.obj \
-  $O\7zUpdate.obj \
-  $O\7zRegister.obj \
-
-
-COMPRESS_OBJS = \
-  $O\CodecExports.obj \
-  $O\Bcj2Coder.obj \
-  $O\Bcj2Register.obj \
-  $O\BcjCoder.obj \
-  $O\BcjRegister.obj \
-  $O\BitlDecoder.obj \
-  $O\BranchMisc.obj \
-  $O\BranchRegister.obj \
-  $O\ByteSwap.obj \
-  $O\BZip2Crc.obj \
-  $O\BZip2Encoder.obj \
-  $O\BZip2Decoder.obj \
-  $O\BZip2Register.obj \
-  $O\CopyCoder.obj \
-  $O\CopyRegister.obj \
-  $O\DeflateEncoder.obj \
-  $O\DeflateDecoder.obj \
-  $O\DeflateRegister.obj \
-  $O\DeltaFilter.obj \
-  $O\Lzma2Decoder.obj \
-  $O\Lzma2Encoder.obj \
-  $O\Lzma2Register.obj \
-  $O\LzmaDecoder.obj \
-  $O\LzmaEncoder.obj \
-  $O\LzmaRegister.obj \
-  $O\LzOutWindow.obj \
-  $O\PpmdDecoder.obj \
-  $O\PpmdEncoder.obj \
-  $O\PpmdRegister.obj \
-  $O\ZstdDecoder.obj \
-  $O\ZstdEncoder.obj \
-  $O\ZstdRegister.obj \
-
-CRYPTO_OBJS = \
-  $O\7zAes.obj \
-  $O\7zAesRegister.obj \
-  $O\MyAes.obj \
-  $O\MyAesReg.obj \
-  $O\RandGen.obj \
-
-C_OBJS = \
-  $O\Alloc.obj \
-  $O\Bcj2.obj \
-  $O\Bcj2Enc.obj \
-  $O\Bra.obj \
-  $O\Bra86.obj \
-  $O\BraIA64.obj \
-  $O\BwtSort.obj \
-  $O\CpuArch.obj \
-  $O\Delta.obj \
-  $O\HuffEnc.obj \
-  $O\LzFind.obj \
-  $O\LzFindMt.obj \
-  $O\Lzma2Dec.obj \
-  $O\Lzma2Enc.obj \
-  $O\LzmaDec.obj \
-  $O\LzmaEnc.obj \
-  $O\MtCoder.obj \
-  $O\Ppmd7.obj \
-  $O\Ppmd7Dec.obj \
-  $O\Ppmd7Enc.obj \
-  $O\Sha256.obj \
-  $O\Sort.obj \
-  $O\Threads.obj \
-
-ZSTD_OBJS = \
-  $O\entropy_common.obj \
-  $O\fse_compress.obj \
-  $O\fse_decompress.obj \
-  $O\huf_compress.obj \
-  $O\huf_decompress.obj \
-  $O\zbuff_compress.obj \
-  $O\zbuff_decompress.obj \
-  $O\zstd_common.obj \
-  $O\zstd_compress.obj \
-  $O\zstd_decompress.obj \
-  $O\zstd_v05.obj \
-  $O\zstd_v06.obj \
-  $O\xxhash.obj \
-
-!include "../../Aes.mak"
-!include "../../Crc.mak"
-!include "../../7zip.mak"
diff --git a/CPP/7zip/Bundles/Format7zZStd/resource.rc b/CPP/7zip/Bundles/Format7zZStd/resource.rc
deleted file mode 100644
index b8dc9bbb..00000000
--- a/CPP/7zip/Bundles/Format7zZStd/resource.rc
+++ /dev/null
@@ -1,5 +0,0 @@
-#include "../../MyVersionInfo.rc"
-
-MY_VERSION_INFO_DLL("7z Standalone Plugin (ZStd)", "7z")
-
-101  ICON  "../../Archive/Icons/7z.ico"
diff --git a/CPP/7zip/Bundles/SFXCon/makefile b/CPP/7zip/Bundles/SFXCon/makefile
index 88a10ca1..1888de01 100644
--- a/CPP/7zip/Bundles/SFXCon/makefile
+++ b/CPP/7zip/Bundles/SFXCon/makefile
@@ -100,8 +100,6 @@ COMPRESS_OBJS = \
   $O\LzmaRegister.obj \
   $O\PpmdDecoder.obj \
   $O\PpmdRegister.obj \
-  $O\ZstdDecoder.obj \
-  $O\ZStdRegister.obj \
 
 CRYPTO_OBJS = \
   $O\7zAes.obj \
@@ -123,15 +121,8 @@ C_OBJS = \
   $O\Sha256.obj \
   $O\Threads.obj \
 
-ZSTD_OBJS = \
-  $O\entropy_common.obj \
-  $O\fse_decompress.obj \
-  $O\huf_decompress.obj \
-  $O\zbuff_decompress.obj \
-  $O\zstd_common.obj \
-  $O\zstd_decompress.obj \
-  $O\xxhash.obj \
-
 !include "../../Aes.mak"
 !include "../../Crc.mak"
+
+!include "../../zstd.mak"
 !include "../../7zip.mak"
diff --git a/CPP/7zip/Bundles/SFXSetup/makefile b/CPP/7zip/Bundles/SFXSetup/makefile
index f2cca2b7..dfd64221 100644
--- a/CPP/7zip/Bundles/SFXSetup/makefile
+++ b/CPP/7zip/Bundles/SFXSetup/makefile
@@ -106,4 +106,5 @@ C_OBJS = \
 
 !include "../../Crc.mak"
 
+!include "../../zstd.mak"
 !include "../../7zip.mak"
diff --git a/CPP/7zip/Bundles/SFXWin/makefile b/CPP/7zip/Bundles/SFXWin/makefile
index d2e37836..07a116aa 100644
--- a/CPP/7zip/Bundles/SFXWin/makefile
+++ b/CPP/7zip/Bundles/SFXWin/makefile
@@ -119,8 +119,6 @@ COMPRESS_OBJS = \
   $O\LzmaRegister.obj \
   $O\PpmdDecoder.obj \
   $O\PpmdRegister.obj \
-  $O\ZstdDecoder.obj \
-  $O\ZStdRegister.obj \
 
 CRYPTO_OBJS = \
   $O\7zAes.obj \
@@ -142,15 +140,8 @@ C_OBJS = \
   $O\Sha256.obj \
   $O\Threads.obj \
 
-ZSTD_OBJS = \
-  $O\entropy_common.obj \
-  $O\fse_decompress.obj \
-  $O\huf_decompress.obj \
-  $O\zbuff_decompress.obj \
-  $O\zstd_common.obj \
-  $O\zstd_decompress.obj \
-  $O\xxhash.obj \
-
 !include "../../Aes.mak"
 !include "../../Crc.mak"
+
+!include "../../zstd.mak"
 !include "../../7zip.mak"
diff --git a/CPP/7zip/Compress/ZstdDecoder.cpp b/CPP/7zip/Compress/ZstdDecoder.cpp
index 6ea9a5f2..ff72b85c 100644
--- a/CPP/7zip/Compress/ZstdDecoder.cpp
+++ b/CPP/7zip/Compress/ZstdDecoder.cpp
@@ -1,405 +1,419 @@
-// ZstdDecoder.cpp
-// (C) 2016 Rich Geldreich, Tino Reichardt
-
-#include "StdAfx.h"
-#include "ZstdDecoder.h"
-
-// #define SHOW_DEBUG_INFO
-#ifdef SHOW_DEBUG_INFO
-#include <stdio.h>
-#define PRF(x) x
-#else
-#define PRF(x)
-#endif
-
-#define ZSTD_DEFAULT_BUFFER_SIZE (1U << 22U)
-
-namespace NCompress {
-namespace NZSTD {
-
-CDecoder::CDecoder ():
-  _inBuf (NULL),
-  _outBuf (NULL),
-  _inPos (0),
-  _inSize (0),
-  _eofFlag (false),
-  _state (NULL),
-  _propsWereSet (false),
-  _outSizeDefined (false),
-  _outSize (0),
-
-  _inSizeProcessed (0),
-  _outSizeProcessed (0),
-  _inBufSizeAllocated (0),
-  _outBufSizeAllocated (0),
-
-  _inBufSize (ZSTD_DEFAULT_BUFFER_SIZE),
-  _outBufSize (ZSTD_DEFAULT_BUFFER_SIZE)
-{
-  _props.clear ();
-}
-
-CDecoder::~CDecoder ()
-{
-  if (_state)
-    ZB_freeDCtx(_state);
-
-  MyFree (_inBuf);
-  MyFree (_outBuf);
-}
-
-STDMETHODIMP CDecoder::SetInBufSize (UInt32, UInt32 size)
-{
-  _inBufSize = size;
-  return S_OK;
-}
-
-STDMETHODIMP CDecoder::SetOutBufSize (UInt32, UInt32 size)
-{
-  _outBufSize = size;
-  return S_OK;
-}
-
-HRESULT CDecoder::CreateBuffers ()
-{
-  if (_inBuf == 0 || _inBufSize != _inBufSizeAllocated)
-  {
-    MyFree (_inBuf);
-    _inBuf = (Byte *) MyAlloc (_inBufSize);
-    if (_inBuf == 0)
-      return E_OUTOFMEMORY;
-    _inBufSizeAllocated = _inBufSize;
-  }
-
-  if (_outBuf == 0 || _outBufSize != _outBufSizeAllocated)
-  {
-    MyFree (_outBuf);
-    _outBuf = (Byte *) MyAlloc (_outBufSize);
-    if (_outBuf == 0)
-      return E_OUTOFMEMORY;
-    _outBufSizeAllocated = _outBufSize;
-  }
-
-  return S_OK;
-}
-
-STDMETHODIMP CDecoder::SetDecoderProperties2 (const Byte * prop, UInt32 size)
-{
-  DProps *pProps = (DProps *) prop;
-
-  if (size != sizeof (DProps))
-    return E_FAIL;
-
-  // version 0.x currently
-  if (pProps->_ver_major != ZSTD_VERSION_MAJOR)
-    return E_FAIL;
-
-  switch (pProps->_ver_minor) {
-  case ZSTD_VERSION_MINOR:
-    break;
-  case 6:
-    break;
-  case 5:
-    break;
-  default:
-    return E_FAIL;
-  }
-
-  memcpy(&_props, pProps, sizeof (DProps));
-  _propsWereSet = true;
-
-  return CreateBuffers();
-}
-
-HRESULT CDecoder::CreateDecompressor()
-{
-  if (!_propsWereSet)
-    return E_FAIL;
-
-  if (!_state) {
-    _state = ZB_createDCtx();
-    if (!_state)
-      return E_FAIL;
-  }
-
-  if (ZBUFF_isError(ZB_decompressInit(_state)))
-    return E_FAIL;
-
-  _eofFlag = false;
-
-  return S_OK;
-}
-
-HRESULT CDecoder::SetOutStreamSizeResume(const UInt64 * outSize)
-{
-  _outSizeDefined = (outSize != NULL);
-  if (_outSizeDefined)
-    _outSize = *outSize;
-  _outSizeProcessed = 0;
-
-  RINOK (CreateDecompressor());
-
-  return S_OK;
-}
-
-STDMETHODIMP CDecoder::SetOutStreamSize (const UInt64 * outSize)
-{
-  _inSizeProcessed = 0;
-  _inPos = _inSize = 0;
-  RINOK (SetOutStreamSizeResume (outSize));
-  return S_OK;
-}
-
-HRESULT CDecoder::CodeSpec (ISequentialInStream * inStream,
-		      ISequentialOutStream * outStream,
-		      ICompressProgressInfo * progress)
-{
-  if (_inBuf == 0 || !_propsWereSet)
-    return S_FALSE;
-
-  if (!_state)
-  {
-    if (CreateDecompressor () != S_OK)
-      return E_FAIL;
-  }
-
-  UInt64 startInProgress = _inSizeProcessed;
-
-  for (;;)
-  {
-    if ((!_eofFlag) && (_inPos == _inSize))
-    {
-      _inPos = _inSize = 0;
-      RINOK (inStream->Read (_inBuf, _inBufSizeAllocated, &_inSize));
-      if (!_inSize)
-	_eofFlag = true;
-    }
-
-    Byte *pIn_bytes = _inBuf + _inPos;
-    size_t num_in_bytes = _inSize - _inPos;
-    Byte *pOut_bytes = _outBuf;
-    size_t num_out_bytes = _outBufSize;
-    if (_outSizeDefined)
-    {
-      UInt64 out_remaining = _outSize - _outSizeProcessed;
-      if (out_remaining == 0)
-	return S_OK;
-      if (num_out_bytes > out_remaining)
-	num_out_bytes = static_cast < size_t > (out_remaining);
-    }
-
-    size_t decomp_status =
-      ZB_decompressContinue (_state, pOut_bytes, &num_out_bytes,
-				pIn_bytes, &num_in_bytes);
-    bool decomp_finished = (decomp_status == 0);
-    bool decomp_failed = ZBUFF_isError (decomp_status) != 0;
-
-    if (num_in_bytes)
-    {
-      _inPos += (UInt32) num_in_bytes;
-      _inSizeProcessed += (UInt32) num_in_bytes;
-    }
-
-    if (num_out_bytes)
-    {
-      _outSizeProcessed += num_out_bytes;
-
-      RINOK (WriteStream (outStream, _outBuf, num_out_bytes));
-    }
-
-    if (decomp_failed)
-    {
-      PRF(fprintf(stderr, "zstdcodec: ZB_decompressContinue() failed: %s\n", ZBUFF_getErrorName(decomp_status)));
-      return S_FALSE;
-    }
-
-    if (decomp_finished)
-      break;
-
-    // This check is to prevent locking up if the input file is accidently truncated.
-    bool made_forward_progress = (num_out_bytes != 0) || (num_in_bytes != 0);
-    if ((!made_forward_progress) && (_eofFlag))
-    {
-      return S_FALSE;
-    }
-
-    UInt64 inSize = _inSizeProcessed - startInProgress;
-    if (progress)
-    {
-      RINOK (progress->SetRatioInfo (&inSize, &_outSizeProcessed));
-    }
-  }
-
-  return S_OK;
-}
-
-STDMETHODIMP CDecoder::Code (ISequentialInStream * inStream,
-		  ISequentialOutStream * outStream,
-		  const UInt64 * inSize,
-		  const UInt64 * outSize, ICompressProgressInfo * progress)
-{
-  (void) inSize;
-  if (_inBuf == 0)
-    return E_INVALIDARG;
-  SetOutStreamSize (outSize);
-  return CodeSpec (inStream, outStream, progress);
-}
-
-// wrapper for different versions
-void *CDecoder::ZB_createDCtx(void)
-{
-  PRF(fprintf(stderr, "zstdcodec: ZB_createDCtx(v=%d)\n", _props._ver_minor));
-#ifndef EXTRACT_ONLY
-  switch (_props._ver_minor) {
-  case 5:
-    return (void*)ZBUFFv05_createDCtx();
-    break;
-  case 6:
-    return (void*)ZBUFFv06_createDCtx();
-    break;
-  }
-#endif
-  return (void*)ZBUFF_createDCtx();
-}
-
-size_t CDecoder::ZB_freeDCtx(void *dctx)
-{
-  PRF(fprintf(stderr, "zstdcodec: ZB_freeDCtx(v=%d)\n", _props._ver_minor));
-#ifndef EXTRACT_ONLY
-  switch (_props._ver_minor) {
-  case 5:
-    return ZBUFFv05_freeDCtx((ZBUFFv05_DCtx *)dctx);
-    break;
-  case 6:
-    return ZBUFFv06_freeDCtx((ZBUFFv06_DCtx *)dctx);
-    break;
-  }
-#endif
-  return ZBUFF_freeDCtx((ZBUFF_DCtx *)dctx);
-}
-
-size_t CDecoder::ZB_decompressInit(void *dctx)
-{
-  PRF(fprintf(stderr, "zstdcodec: ZB_decompressInit(v=%d)\n", _props._ver_minor));
-#ifndef EXTRACT_ONLY
-  switch (_props._ver_minor) {
-  case 5:
-    return ZBUFFv05_decompressInit((ZBUFFv05_DCtx *)dctx);
-    break;
-  case 6:
-    return ZBUFFv06_decompressInit((ZBUFFv06_DCtx *)dctx);
-    break;
-  }
-#endif
-  return ZBUFF_decompressInit((ZBUFF_DCtx *)dctx);
-}
-
-size_t CDecoder::ZB_decompressContinue(void *dctx, void* dst, size_t *dstCapacityPtr, const void* src, size_t *srcSizePtr)
-{
-  PRF(fprintf(stderr, "zstdcodec: ZB_decompressContinue(v=%d)\n", _props._ver_minor));
-#ifndef EXTRACT_ONLY
-  switch (_props._ver_minor) {
-  case 5:
-    return ZBUFFv05_decompressContinue((ZBUFFv05_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
-    break;
-  case 6:
-    return ZBUFFv06_decompressContinue((ZBUFFv06_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
-    break;
-  }
-#endif
-  return ZBUFF_decompressContinue((ZBUFF_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
-}
-
-#ifndef NO_READ_FROM_CODER
-STDMETHODIMP CDecoder::SetInStream (ISequentialInStream * inStream)
-{
-  _inStream = inStream;
-  return S_OK;
-}
-
-STDMETHODIMP CDecoder::ReleaseInStream ()
-{
-  _inStream.Release ();
-  return S_OK;
-}
-
-STDMETHODIMP CDecoder::Read (void *data, UInt32 size, UInt32 * processedSize)
-{
-  if (processedSize)
-    *processedSize = 0;
-
-  if (_inBuf == 0 || !_propsWereSet)
-    return S_FALSE;
-
-  if (!_state)
-  {
-    if (CreateDecompressor () != S_OK)
-      return E_FAIL;
-  }
-
-  while (size != 0)
-  {
-    if ((!_eofFlag) && (_inPos == _inSize))
-    {
-      _inPos = _inSize = 0;
-      RINOK (_inStream->Read (_inBuf, _inBufSizeAllocated, &_inSize));
-      if (!_inSize)
-	_eofFlag = true;
-    }
-
-    Byte *pIn_bytes = _inBuf + _inPos;
-    size_t  num_in_bytes = _inSize - _inPos;
-    Byte *pOut_bytes = (Byte *) data;
-    size_t  num_out_bytes = size;
-
-    size_t decomp_status =
-      ZB_decompressContinue (_state, pOut_bytes, &num_out_bytes,
-				pIn_bytes, &num_in_bytes);
-    bool
-      decomp_finished = (decomp_status == 0);
-    bool
-      decomp_failed = ZBUFF_isError (decomp_status) != 0;
-
-    if (num_in_bytes)
-    {
-      _inPos += (UInt32) num_in_bytes;
-      _inSizeProcessed += num_in_bytes;
-    }
-
-    if (num_out_bytes)
-    {
-      _outSizeProcessed += num_out_bytes;
-      size -= (UInt32) num_out_bytes;
-      if (processedSize)
-	*processedSize += (UInt32) num_out_bytes;
-    }
-
-    if (decomp_failed)
-    {
-      return S_FALSE;
-    }
-
-    if (decomp_finished)
-      break;
-
-    // This check is to prevent locking up if the input file is accidently truncated.
-    bool made_forward_progress = (num_out_bytes != 0) || (num_in_bytes != 0);
-    if ((!made_forward_progress) && (_eofFlag))
-    {
-      return S_FALSE;
-    }
-  }
-
-  return S_OK;
-}
-
-HRESULT CDecoder::CodeResume (ISequentialOutStream * outStream,
-			const UInt64 * outSize,
-			ICompressProgressInfo * progress)
-{
-  RINOK (SetOutStreamSizeResume (outSize));
-  return CodeSpec (_inStream, outStream, progress);
-}
-#endif
-
-}}
+// ZstdDecoder.cpp
+// (C) 2016 Rich Geldreich, Tino Reichardt
+
+#include "StdAfx.h"
+#include "ZstdDecoder.h"
+
+// #define SHOW_DEBUG_INFO
+#ifdef SHOW_DEBUG_INFO
+#include <stdio.h>
+#define PRF(x) x
+#else
+#define PRF(x)
+#endif
+
+namespace NCompress {
+namespace NZSTD {
+
+CDecoder::CDecoder ():
+  _inBuf (NULL),
+  _outBuf (NULL),
+  _inPos (0),
+  _inSize (0),
+  _eofFlag (false),
+  _state (NULL),
+  _propsWereSet (false),
+  _outSizeDefined (false),
+  _outSize (0),
+
+  _inSizeProcessed (0),
+  _outSizeProcessed (0),
+  _inBufSizeAllocated (0),
+  _outBufSizeAllocated (0),
+
+  _inBufSize (ZBUFF_recommendedDInSize()),
+  _outBufSize (ZBUFF_recommendedDOutSize())
+{
+  _props.clear ();
+}
+
+CDecoder::~CDecoder ()
+{
+  if (_state)
+    ZB_freeDCtx(_state);
+
+  MyFree (_inBuf);
+  MyFree (_outBuf);
+}
+
+STDMETHODIMP CDecoder::SetInBufSize (UInt32, UInt32 size)
+{
+  _inBufSize = size;
+  return S_OK;
+}
+
+STDMETHODIMP CDecoder::SetOutBufSize (UInt32, UInt32 size)
+{
+  _outBufSize = size;
+  return S_OK;
+}
+
+HRESULT CDecoder::CreateBuffers ()
+{
+  if (_inBuf == 0 || _inBufSize != _inBufSizeAllocated)
+  {
+    MyFree (_inBuf);
+    _inBuf = (Byte *) MyAlloc (_inBufSize);
+    if (_inBuf == 0)
+      return E_OUTOFMEMORY;
+    _inBufSizeAllocated = (UInt32)_inBufSize;
+  }
+
+  if (_outBuf == 0 || _outBufSize != _outBufSizeAllocated)
+  {
+    MyFree (_outBuf);
+    _outBuf = (Byte *) MyAlloc (_outBufSize);
+    if (_outBuf == 0)
+      return E_OUTOFMEMORY;
+    _outBufSizeAllocated = (UInt32)_outBufSize;
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP CDecoder::SetDecoderProperties2 (const Byte * prop, UInt32 size)
+{
+  DProps *pProps = (DProps *) prop;
+
+  if (size != sizeof (DProps))
+    return E_FAIL;
+
+  // version 0.x currently
+  if (pProps->_ver_major != ZSTD_VERSION_MAJOR)
+    return E_FAIL;
+
+  switch (pProps->_ver_minor) {
+  case ZSTD_VERSION_MINOR:
+    break;
+#ifdef ZSTD_LEGACY
+  case 5:
+    break;
+  case 6:
+    break;
+  case 7:
+    break;
+#endif
+  default:
+    return E_FAIL;
+  }
+
+  memcpy(&_props, pProps, sizeof (DProps));
+  _propsWereSet = true;
+
+  return CreateBuffers();
+}
+
+HRESULT CDecoder::CreateDecompressor()
+{
+  if (!_propsWereSet)
+    return E_FAIL;
+
+  if (!_state) {
+    _state = ZB_createDCtx();
+    if (!_state)
+      return E_FAIL;
+  }
+
+  if (ZBUFF_isError(ZB_decompressInit(_state)))
+    return E_FAIL;
+
+  _eofFlag = false;
+
+  return S_OK;
+}
+
+HRESULT CDecoder::SetOutStreamSizeResume(const UInt64 * outSize)
+{
+  _outSizeDefined = (outSize != NULL);
+  if (_outSizeDefined)
+    _outSize = *outSize;
+  _outSizeProcessed = 0;
+
+  RINOK (CreateDecompressor());
+
+  return S_OK;
+}
+
+STDMETHODIMP CDecoder::SetOutStreamSize (const UInt64 * outSize)
+{
+  _inSizeProcessed = 0;
+  _inPos = _inSize = 0;
+  RINOK (SetOutStreamSizeResume (outSize));
+  return S_OK;
+}
+
+HRESULT CDecoder::CodeSpec (ISequentialInStream * inStream,
+		      ISequentialOutStream * outStream,
+		      ICompressProgressInfo * progress)
+{
+  if (_inBuf == 0 || !_propsWereSet)
+    return S_FALSE;
+
+  if (!_state)
+  {
+    if (CreateDecompressor () != S_OK)
+      return E_FAIL;
+  }
+
+  UInt64 startInProgress = _inSizeProcessed;
+
+  for (;;)
+  {
+    if ((!_eofFlag) && (_inPos == _inSize))
+    {
+      _inPos = _inSize = 0;
+      RINOK (inStream->Read (_inBuf, _inBufSizeAllocated, &_inSize));
+      if (!_inSize)
+	_eofFlag = true;
+    }
+
+    Byte *pIn_bytes = _inBuf + _inPos;
+    size_t num_in_bytes = _inSize - _inPos;
+    Byte *pOut_bytes = _outBuf;
+    size_t num_out_bytes = _outBufSize;
+    if (_outSizeDefined)
+    {
+      UInt64 out_remaining = _outSize - _outSizeProcessed;
+      if (out_remaining == 0)
+	return S_OK;
+      if (num_out_bytes > out_remaining)
+	num_out_bytes = static_cast < size_t > (out_remaining);
+    }
+
+    size_t decomp_status =
+      ZB_decompressContinue (_state, pOut_bytes, &num_out_bytes,
+				pIn_bytes, &num_in_bytes);
+    bool decomp_finished = (decomp_status == 0);
+    bool decomp_failed = ZBUFF_isError (decomp_status) != 0;
+
+    if (num_in_bytes)
+    {
+      _inPos += (UInt32) num_in_bytes;
+      _inSizeProcessed += (UInt32) num_in_bytes;
+    }
+
+    if (num_out_bytes)
+    {
+      _outSizeProcessed += num_out_bytes;
+
+      RINOK (WriteStream (outStream, _outBuf, num_out_bytes));
+    }
+
+    if (decomp_failed)
+    {
+      PRF(fprintf(stderr, "zstdcodec: ZB_decompressContinue() failed: %s\n", ZBUFF_getErrorName(decomp_status)));
+      return S_FALSE;
+    }
+
+    if (decomp_finished)
+      break;
+
+    // This check is to prevent locking up if the input file is accidently truncated.
+    bool made_forward_progress = (num_out_bytes != 0) || (num_in_bytes != 0);
+    if ((!made_forward_progress) && (_eofFlag))
+    {
+      return S_FALSE;
+    }
+
+    UInt64 inSize = _inSizeProcessed - startInProgress;
+    if (progress)
+    {
+      RINOK (progress->SetRatioInfo (&inSize, &_outSizeProcessed));
+    }
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP CDecoder::Code (ISequentialInStream * inStream,
+		  ISequentialOutStream * outStream,
+		  const UInt64 * inSize,
+		  const UInt64 * outSize, ICompressProgressInfo * progress)
+{
+  (void) inSize;
+  if (_inBuf == 0)
+    return E_INVALIDARG;
+  SetOutStreamSize (outSize);
+  return CodeSpec (inStream, outStream, progress);
+}
+
+// wrapper for different versions
+void *CDecoder::ZB_createDCtx(void)
+{
+  PRF(fprintf(stderr, "zstdcodec: ZB_createDCtx(v=%d)\n", _props._ver_minor));
+#ifdef ZSTD_LEGACY
+  switch (_props._ver_minor) {
+  case 5:
+    return (void*)ZBUFFv05_createDCtx();
+    break;
+  case 6:
+    return (void*)ZBUFFv06_createDCtx();
+    break;
+  case 7:
+    return (void*)ZBUFFv07_createDCtx();
+    break;
+  }
+#endif
+  return (void*)ZBUFF_createDCtx();
+}
+
+size_t CDecoder::ZB_freeDCtx(void *dctx)
+{
+  PRF(fprintf(stderr, "zstdcodec: ZB_freeDCtx(v=%d)\n", _props._ver_minor));
+#ifdef ZSTD_LEGACY
+  switch (_props._ver_minor) {
+  case 5:
+    return ZBUFFv05_freeDCtx((ZBUFFv05_DCtx *)dctx);
+    break;
+  case 6:
+    return ZBUFFv06_freeDCtx((ZBUFFv06_DCtx *)dctx);
+    break;
+  case 7:
+    return ZBUFFv07_freeDCtx((ZBUFFv07_DCtx *)dctx);
+    break;
+  }
+#endif
+  return ZBUFF_freeDCtx((ZBUFF_DCtx *)dctx);
+}
+
+size_t CDecoder::ZB_decompressInit(void *dctx)
+{
+  PRF(fprintf(stderr, "zstdcodec: ZB_decompressInit(v=%d)\n", _props._ver_minor));
+#ifdef ZSTD_LEGACY
+  switch (_props._ver_minor) {
+  case 5:
+    return ZBUFFv05_decompressInit((ZBUFFv05_DCtx *)dctx);
+    break;
+  case 6:
+    return ZBUFFv06_decompressInit((ZBUFFv06_DCtx *)dctx);
+    break;
+  case 7:
+    return ZBUFFv07_decompressInit((ZBUFFv07_DCtx *)dctx);
+    break;
+  }
+#endif
+  return ZBUFF_decompressInit((ZBUFF_DCtx *)dctx);
+}
+
+size_t CDecoder::ZB_decompressContinue(void *dctx, void* dst, size_t *dstCapacityPtr, const void* src, size_t *srcSizePtr)
+{
+  PRF(fprintf(stderr, "zstdcodec: ZB_decompressContinue(v=%d)\n", _props._ver_minor));
+#ifdef ZSTD_LEGACY
+  switch (_props._ver_minor) {
+  case 5:
+    return ZBUFFv05_decompressContinue((ZBUFFv05_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
+    break;
+  case 6:
+    return ZBUFFv06_decompressContinue((ZBUFFv06_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
+    break;
+  case 7:
+    return ZBUFFv07_decompressContinue((ZBUFFv07_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
+    break;
+  }
+#endif
+  return ZBUFF_decompressContinue((ZBUFF_DCtx *)dctx, dst, dstCapacityPtr, src, srcSizePtr);
+}
+
+#ifndef NO_READ_FROM_CODER
+STDMETHODIMP CDecoder::SetInStream (ISequentialInStream * inStream)
+{
+  _inStream = inStream;
+  return S_OK;
+}
+
+STDMETHODIMP CDecoder::ReleaseInStream ()
+{
+  _inStream.Release ();
+  return S_OK;
+}
+
+STDMETHODIMP CDecoder::Read (void *data, UInt32 size, UInt32 * processedSize)
+{
+  if (processedSize)
+    *processedSize = 0;
+
+  if (_inBuf == 0 || !_propsWereSet)
+    return S_FALSE;
+
+  if (!_state)
+  {
+    if (CreateDecompressor () != S_OK)
+      return E_FAIL;
+  }
+
+  while (size != 0)
+  {
+    if ((!_eofFlag) && (_inPos == _inSize))
+    {
+      _inPos = _inSize = 0;
+      RINOK (_inStream->Read (_inBuf, _inBufSizeAllocated, &_inSize));
+      if (!_inSize)
+	_eofFlag = true;
+    }
+
+    Byte *pIn_bytes = _inBuf + _inPos;
+    size_t  num_in_bytes = _inSize - _inPos;
+    Byte *pOut_bytes = (Byte *) data;
+    size_t  num_out_bytes = size;
+
+    size_t decomp_status =
+      ZB_decompressContinue (_state, pOut_bytes, &num_out_bytes,
+				pIn_bytes, &num_in_bytes);
+    bool
+      decomp_finished = (decomp_status == 0);
+    bool
+      decomp_failed = ZBUFF_isError (decomp_status) != 0;
+
+    if (num_in_bytes)
+    {
+      _inPos += (UInt32) num_in_bytes;
+      _inSizeProcessed += num_in_bytes;
+    }
+
+    if (num_out_bytes)
+    {
+      _outSizeProcessed += num_out_bytes;
+      size -= (UInt32) num_out_bytes;
+      if (processedSize)
+	*processedSize += (UInt32) num_out_bytes;
+    }
+
+    if (decomp_failed)
+    {
+      return S_FALSE;
+    }
+
+    if (decomp_finished)
+      break;
+
+    // This check is to prevent locking up if the input file is accidently truncated.
+    bool made_forward_progress = (num_out_bytes != 0) || (num_in_bytes != 0);
+    if ((!made_forward_progress) && (_eofFlag))
+    {
+      return S_FALSE;
+    }
+  }
+
+  return S_OK;
+}
+
+HRESULT CDecoder::CodeResume (ISequentialOutStream * outStream,
+			const UInt64 * outSize,
+			ICompressProgressInfo * progress)
+{
+  RINOK (SetOutStreamSizeResume (outSize));
+  return CodeSpec (_inStream, outStream, progress);
+}
+#endif
+
+}}
diff --git a/CPP/7zip/Compress/ZstdDecoder.h b/CPP/7zip/Compress/ZstdDecoder.h
index 7e7d50f7..0e318f24 100644
--- a/CPP/7zip/Compress/ZstdDecoder.h
+++ b/CPP/7zip/Compress/ZstdDecoder.h
@@ -1,111 +1,109 @@
-// ZstdDecoder.h
-// (C) 2016 Rich Geldreich, Tino Reichardt
-
-#include "StdAfx.h"
-
-#define ZSTD_STATIC_LINKING_ONLY
-#include "../../../C/Alloc.h"
-#include "../../../C/ZStd/zstd.h"
-#include "../../../C/ZStd/zbuff.h"
-#include "../../../C/ZStd/zstd_legacy.h"
-
-#include "../../Common/Common.h"
-#include "../../Common/MyCom.h"
-#include "../ICoder.h"
-#include "../Common/StreamUtils.h"
-#include "../Common/RegisterCodec.h"
-
-namespace NCompress {
-namespace NZSTD {
-
-struct DProps
-{
-  DProps() { clear (); }
-  void clear ()
-  {
-    memset (this, 0, sizeof (*this));
-    _ver_major = ZSTD_VERSION_MAJOR;
-    _ver_minor = ZSTD_VERSION_MINOR;
-    _level = 1;
-  }
-
-  Byte _ver_major;
-  Byte _ver_minor;
-  Byte _level;
-  Byte _reserved[2];
-};
-
-class CDecoder:public ICompressCoder,
-  public ICompressSetDecoderProperties2, public ICompressSetBufSize,
-#ifndef NO_READ_FROM_CODER
-  public ICompressSetInStream,
-  public ICompressSetOutStreamSize, public ISequentialInStream,
-#endif
-  public CMyUnknownImp
-{
-  CMyComPtr < ISequentialInStream > _inStream;
-  Byte *_inBuf;
-  Byte *_outBuf;
-  UInt32 _inPos;
-  UInt32 _inSize;
-  bool _eofFlag;
-
-  void *_state;
-
-  DProps _props;
-  bool _propsWereSet;
-
-  bool _outSizeDefined;
-  UInt64 _outSize;
-  UInt64 _inSizeProcessed;
-  UInt64 _outSizeProcessed;
-
-  UInt32 _inBufSizeAllocated;
-  UInt32 _outBufSizeAllocated;
-  UInt32 _inBufSize;
-  UInt32 _outBufSize;
-
-  HRESULT CreateBuffers ();
-  HRESULT CodeSpec (ISequentialInStream * inStream, ISequentialOutStream * outStream, ICompressProgressInfo * progress);
-  HRESULT SetOutStreamSizeResume (const UInt64 * outSize);
-  HRESULT CreateDecompressor ();
-
-  // wrapper for different versions
-  void *ZB_createDCtx(void);
-  size_t ZB_freeDCtx(void *dctx);
-  size_t ZB_decompressInit(void *dctx);
-  size_t ZB_decompressContinue(void *dctx, void* dst, size_t *dstCapacityPtr, const void* src, size_t *srcSizePtr);
-
-public:
-
-  MY_QUERYINTERFACE_BEGIN2 (ICompressCoder)
-  MY_QUERYINTERFACE_ENTRY (ICompressSetDecoderProperties2)
-  MY_QUERYINTERFACE_ENTRY (ICompressSetBufSize)
-#ifndef NO_READ_FROM_CODER
-  MY_QUERYINTERFACE_ENTRY (ICompressSetInStream)
-  MY_QUERYINTERFACE_ENTRY (ICompressSetOutStreamSize)
-  MY_QUERYINTERFACE_ENTRY (ISequentialInStream)
-#endif
-  MY_QUERYINTERFACE_END
-
-  MY_ADDREF_RELEASE
-  STDMETHOD (Code)(ISequentialInStream * inStream, ISequentialOutStream * outStream, const UInt64 * inSize, const UInt64 * outSize, ICompressProgressInfo * progress);
-  STDMETHOD (SetDecoderProperties2) (const Byte * data, UInt32 size);
-  STDMETHOD (SetOutStreamSize) (const UInt64 * outSize);
-  STDMETHOD (SetInBufSize) (UInt32 streamIndex, UInt32 size);
-  STDMETHOD (SetOutBufSize) (UInt32 streamIndex, UInt32 size);
-
-#ifndef NO_READ_FROM_CODER
-  STDMETHOD (SetInStream) (ISequentialInStream * inStream);
-  STDMETHOD (ReleaseInStream) ();
-  STDMETHOD (Read) (void *data, UInt32 size, UInt32 * processedSize);
-  HRESULT CodeResume (ISequentialOutStream * outStream, const UInt64 * outSize, ICompressProgressInfo * progress);
-
-  UInt64 GetInputProcessedSize () const { return _inSizeProcessed; }
-#endif
-
-  CDecoder();
-  virtual ~CDecoder();
-};
-
-}}
+// ZstdDecoder.h
+// (C) 2016 Rich Geldreich, Tino Reichardt
+
+#define ZSTD_STATIC_LINKING_ONLY
+#include "../../../C/Alloc.h"
+#include "../../../C/ZStd/zstd.h"
+#include "../../../C/ZStd/zbuff.h"
+#include "../../../C/ZStd/zstd_legacy.h"
+
+#include "../../Common/Common.h"
+#include "../../Common/MyCom.h"
+#include "../ICoder.h"
+#include "../Common/StreamUtils.h"
+#include "../Common/RegisterCodec.h"
+
+namespace NCompress {
+namespace NZSTD {
+
+struct DProps
+{
+  DProps() { clear (); }
+  void clear ()
+  {
+    memset (this, 0, sizeof (*this));
+    _ver_major = ZSTD_VERSION_MAJOR;
+    _ver_minor = ZSTD_VERSION_MINOR;
+    _level = 1;
+  }
+
+  Byte _ver_major;
+  Byte _ver_minor;
+  Byte _level;
+  Byte _reserved[2];
+};
+
+class CDecoder:public ICompressCoder,
+  public ICompressSetDecoderProperties2, public ICompressSetBufSize,
+#ifndef NO_READ_FROM_CODER
+  public ICompressSetInStream,
+  public ICompressSetOutStreamSize, public ISequentialInStream,
+#endif
+  public CMyUnknownImp
+{
+  CMyComPtr < ISequentialInStream > _inStream;
+  Byte *_inBuf;
+  Byte *_outBuf;
+  UInt32 _inPos;
+  UInt32 _inSize;
+  bool _eofFlag;
+
+  void *_state;
+
+  DProps _props;
+  bool _propsWereSet;
+
+  bool _outSizeDefined;
+  UInt64 _outSize;
+  UInt64 _inSizeProcessed;
+  UInt64 _outSizeProcessed;
+
+  UInt32 _inBufSizeAllocated;
+  UInt32 _outBufSizeAllocated;
+  size_t _inBufSize;
+  size_t _outBufSize;
+
+  HRESULT CreateBuffers ();
+  HRESULT CodeSpec (ISequentialInStream * inStream, ISequentialOutStream * outStream, ICompressProgressInfo * progress);
+  HRESULT SetOutStreamSizeResume (const UInt64 * outSize);
+  HRESULT CreateDecompressor ();
+
+  // wrapper for different versions
+  void *ZB_createDCtx(void);
+  size_t ZB_freeDCtx(void *dctx);
+  size_t ZB_decompressInit(void *dctx);
+  size_t ZB_decompressContinue(void *dctx, void* dst, size_t *dstCapacityPtr, const void* src, size_t *srcSizePtr);
+
+public:
+
+  MY_QUERYINTERFACE_BEGIN2 (ICompressCoder)
+  MY_QUERYINTERFACE_ENTRY (ICompressSetDecoderProperties2)
+  MY_QUERYINTERFACE_ENTRY (ICompressSetBufSize)
+#ifndef NO_READ_FROM_CODER
+  MY_QUERYINTERFACE_ENTRY (ICompressSetInStream)
+  MY_QUERYINTERFACE_ENTRY (ICompressSetOutStreamSize)
+  MY_QUERYINTERFACE_ENTRY (ISequentialInStream)
+#endif
+  MY_QUERYINTERFACE_END
+
+  MY_ADDREF_RELEASE
+  STDMETHOD (Code)(ISequentialInStream * inStream, ISequentialOutStream * outStream, const UInt64 * inSize, const UInt64 * outSize, ICompressProgressInfo * progress);
+  STDMETHOD (SetDecoderProperties2) (const Byte * data, UInt32 size);
+  STDMETHOD (SetOutStreamSize) (const UInt64 * outSize);
+  STDMETHOD (SetInBufSize) (UInt32 streamIndex, UInt32 size);
+  STDMETHOD (SetOutBufSize) (UInt32 streamIndex, UInt32 size);
+
+#ifndef NO_READ_FROM_CODER
+  STDMETHOD (SetInStream) (ISequentialInStream * inStream);
+  STDMETHOD (ReleaseInStream) ();
+  STDMETHOD (Read) (void *data, UInt32 size, UInt32 * processedSize);
+  HRESULT CodeResume (ISequentialOutStream * outStream, const UInt64 * outSize, ICompressProgressInfo * progress);
+
+  UInt64 GetInputProcessedSize () const { return _inSizeProcessed; }
+#endif
+
+  CDecoder();
+  virtual ~CDecoder();
+};
+
+}}
diff --git a/CPP/7zip/Compress/ZstdEncoder.cpp b/CPP/7zip/Compress/ZstdEncoder.cpp
index 8131df61..aac3b961 100644
--- a/CPP/7zip/Compress/ZstdEncoder.cpp
+++ b/CPP/7zip/Compress/ZstdEncoder.cpp
@@ -1,192 +1,190 @@
-// ZstdEncoder.cpp
-// (C) 2016 Rich Geldreich, Tino Reichardt
-
-#include "StdAfx.h"
-#include "ZstdEncoder.h"
-
-// #define SHOW_DEBUG_INFO
-#ifdef SHOW_DEBUG_INFO
-#include <stdio.h>
-#define PRF(x) x
-#else
-#define PRF(x)
-#endif
-
-#define ZSTD_DEFAULT_BUFFER_SIZE (1U << 22U)
-
-#ifndef EXTRACT_ONLY
-namespace NCompress {
-namespace NZSTD {
-
-CEncoder::CEncoder():
-  _state (NULL),
-  _inBuf (NULL),
-  _outBuf (NULL),
-  _inPos (0),
-  _inSize (0),
-  _inBufSizeAllocated (0),
-  _outBufSizeAllocated (0),
-  _inBufSize (ZSTD_DEFAULT_BUFFER_SIZE),
-  _outBufSize (ZSTD_DEFAULT_BUFFER_SIZE),
-  _inSizeProcessed (0),
-  _outSizeProcessed (0)
-{
-  _props.clear ();
-}
-
-CEncoder::~CEncoder ()
-{
-  if (_state)
-    ZBUFF_freeCCtx(_state);
-
-  MyFree (_inBuf);
-  MyFree (_outBuf);
-}
-
-STDMETHODIMP CEncoder::SetCoderProperties (const PROPID * propIDs,
-  const PROPVARIANT * coderProps, UInt32 numProps)
-{
-  _props.clear ();
-
-  for (UInt32 i = 0; i < numProps; i++)
-  {
-    const PROPVARIANT & prop = coderProps[i];
-    PROPID propID = propIDs[i];
-    switch (propID)
-    {
-    case NCoderPropID::kLevel:
-      {
-	if (prop.vt != VT_UI4)
-	  return E_INVALIDARG;
-
-	_props._level = static_cast < Byte > (prop.ulVal);
-	Byte zstd_level = static_cast < Byte > (ZSTD_maxCLevel());
-	if (_props._level > zstd_level)
-	  _props._level = zstd_level;
-
-	break;
-      }
-    default:
-      {
-	break;
-      }
-    }
-  }
-
-  return S_OK;
-}
-
-STDMETHODIMP CEncoder::WriteCoderProperties (ISequentialOutStream * outStream)
-{
-  return WriteStream (outStream, &_props, sizeof (_props));
-}
-
-HRESULT CEncoder::CreateBuffers ()
-{
-  if (_inBuf == 0 || _inBufSize != _inBufSizeAllocated)
-  {
-    MyFree (_inBuf);
-    _inBuf = (Byte *) MyAlloc (_inBufSize);
-    if (_inBuf == 0)
-      return E_OUTOFMEMORY;
-    _inBufSizeAllocated = _inBufSize;
-  }
-
-  if (_outBuf == 0 || _outBufSize != _outBufSizeAllocated)
-  {
-    MyFree (_outBuf);
-    _outBuf = (Byte *) MyAlloc (_outBufSize);
-    if (_outBuf == 0)
-      return E_OUTOFMEMORY;
-    _outBufSizeAllocated = _outBufSize;
-  }
-
-  return S_OK;
-}
-
-HRESULT CEncoder::CreateCompressor ()
-{
-  if (!_state) {
-    _state = ZBUFF_createCCtx();
-    if (!_state)
-      return S_FALSE;
-  }
-
-  if (ZBUFF_compressInit(_state, _props._level))
-    return S_FALSE;
-
-  return S_OK;
-}
-
-STDMETHODIMP CEncoder::Code (ISequentialInStream * inStream,
-  ISequentialOutStream * outStream, const UInt64 * /* inSize */ ,
-  const UInt64 * /* outSize */ , ICompressProgressInfo * progress)
-{
-  RINOK (CreateCompressor());
-  RINOK (CreateBuffers());
-
-  UInt64 startInProgress = _inSizeProcessed;
-  UInt64 startOutProgress = _outSizeProcessed;
-
-  for (;;)
-  {
-    bool eofFlag = false;
-    if (_inPos == _inSize)
-    {
-      _inPos = _inSize = 0;
-      RINOK (inStream->Read (_inBuf, _inBufSizeAllocated, &_inSize));
-      if (!_inSize)
-	eofFlag = true;
-    }
-
-    Byte *pIn_bytes = _inBuf + _inPos;
-    size_t num_in_bytes = _inSize - _inPos;
-    Byte *pOut_bytes = _outBuf;
-    size_t num_out_bytes = _outBufSize;
-
-    size_t comp_status;
-    bool comp_finished = false;
-
-    if (eofFlag)
-    {
-      comp_status = ZBUFF_compressEnd (_state, pOut_bytes, &num_out_bytes);
-      comp_finished = (comp_status == 0);
-    }
-    else
-    {
-      comp_status = ZBUFF_compressContinue(_state, pOut_bytes, &num_out_bytes, pIn_bytes, &num_in_bytes);
-    }
-
-    bool comp_failed = ZBUFF_isError (comp_status) != 0;
-
-    if (num_in_bytes)
-    {
-      _inPos += (UInt32) num_in_bytes;
-      _inSizeProcessed += (UInt32) num_in_bytes;
-    }
-
-    if (num_out_bytes)
-    {
-      _outSizeProcessed += num_out_bytes;
-      RINOK (WriteStream (outStream, _outBuf, num_out_bytes));
-    }
-
-    if (comp_failed)
-      return S_FALSE;
-
-    if (comp_finished)
-      break;
-
-    UInt64 inSize = _inSizeProcessed - startInProgress;
-    UInt64 outSize = _outSizeProcessed - startOutProgress;
-    if (progress)
-    {
-      RINOK (progress->SetRatioInfo (&inSize, &outSize));
-    }
-  }
-
-  return S_OK;
-}
-
-}}
-#endif
+// ZstdEncoder.cpp
+// (C) 2016 Rich Geldreich, Tino Reichardt
+
+#include "StdAfx.h"
+#include "ZstdEncoder.h"
+
+// #define SHOW_DEBUG_INFO
+#ifdef SHOW_DEBUG_INFO
+#include <stdio.h>
+#define PRF(x) x
+#else
+#define PRF(x)
+#endif
+
+#ifndef EXTRACT_ONLY
+namespace NCompress {
+namespace NZSTD {
+
+CEncoder::CEncoder():
+  _state (NULL),
+  _inBuf (NULL),
+  _outBuf (NULL),
+  _inPos (0),
+  _inSize (0),
+  _inBufSizeAllocated (0),
+  _outBufSizeAllocated (0),
+  _inBufSize (ZBUFF_recommendedCInSize()),
+  _outBufSize (ZBUFF_recommendedCOutSize()),
+  _inSizeProcessed (0),
+  _outSizeProcessed (0)
+{
+  _props.clear ();
+}
+
+CEncoder::~CEncoder ()
+{
+  if (_state)
+    ZBUFF_freeCCtx(_state);
+
+  MyFree (_inBuf);
+  MyFree (_outBuf);
+}
+
+STDMETHODIMP CEncoder::SetCoderProperties (const PROPID * propIDs,
+  const PROPVARIANT * coderProps, UInt32 numProps)
+{
+  _props.clear ();
+
+  for (UInt32 i = 0; i < numProps; i++)
+  {
+    const PROPVARIANT & prop = coderProps[i];
+    PROPID propID = propIDs[i];
+    switch (propID)
+    {
+    case NCoderPropID::kLevel:
+      {
+	if (prop.vt != VT_UI4)
+	  return E_INVALIDARG;
+
+	_props._level = static_cast < Byte > (prop.ulVal);
+	Byte zstd_level = static_cast < Byte > (ZSTD_maxCLevel());
+	if (_props._level > zstd_level)
+	  _props._level = zstd_level;
+
+	break;
+      }
+    default:
+      {
+	break;
+      }
+    }
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP CEncoder::WriteCoderProperties (ISequentialOutStream * outStream)
+{
+  return WriteStream (outStream, &_props, sizeof (_props));
+}
+
+HRESULT CEncoder::CreateBuffers ()
+{
+  if (_inBuf == 0 || _inBufSize != _inBufSizeAllocated)
+  {
+    MyFree (_inBuf);
+    _inBuf = (Byte *) MyAlloc (_inBufSize);
+    if (_inBuf == 0)
+      return E_OUTOFMEMORY;
+    _inBufSizeAllocated = (UInt32)_inBufSize;
+  }
+
+  if (_outBuf == 0 || _outBufSize != _outBufSizeAllocated)
+  {
+    MyFree (_outBuf);
+    _outBuf = (Byte *) MyAlloc (_outBufSize);
+    if (_outBuf == 0)
+      return E_OUTOFMEMORY;
+    _outBufSizeAllocated = (UInt32)_outBufSize;
+  }
+
+  return S_OK;
+}
+
+HRESULT CEncoder::CreateCompressor ()
+{
+  if (!_state) {
+    _state = ZBUFF_createCCtx();
+    if (!_state)
+      return S_FALSE;
+  }
+
+  if (ZBUFF_compressInit(_state, _props._level))
+    return S_FALSE;
+
+  return S_OK;
+}
+
+STDMETHODIMP CEncoder::Code (ISequentialInStream * inStream,
+  ISequentialOutStream * outStream, const UInt64 * /* inSize */ ,
+  const UInt64 * /* outSize */ , ICompressProgressInfo * progress)
+{
+  RINOK (CreateCompressor());
+  RINOK (CreateBuffers());
+
+  UInt64 startInProgress = _inSizeProcessed;
+  UInt64 startOutProgress = _outSizeProcessed;
+
+  for (;;)
+  {
+    bool eofFlag = false;
+    if (_inPos == _inSize)
+    {
+      _inPos = _inSize = 0;
+      RINOK (inStream->Read (_inBuf, _inBufSizeAllocated, &_inSize));
+      if (!_inSize)
+	eofFlag = true;
+    }
+
+    Byte *pIn_bytes = _inBuf + _inPos;
+    size_t num_in_bytes = _inSize - _inPos;
+    Byte *pOut_bytes = _outBuf;
+    size_t num_out_bytes = _outBufSize;
+
+    size_t comp_status;
+    bool comp_finished = false;
+
+    if (eofFlag)
+    {
+      comp_status = ZBUFF_compressEnd (_state, pOut_bytes, &num_out_bytes);
+      comp_finished = (comp_status == 0);
+    }
+    else
+    {
+      comp_status = ZBUFF_compressContinue(_state, pOut_bytes, &num_out_bytes, pIn_bytes, &num_in_bytes);
+    }
+
+    bool comp_failed = ZBUFF_isError (comp_status) != 0;
+
+    if (num_in_bytes)
+    {
+      _inPos += (UInt32) num_in_bytes;
+      _inSizeProcessed += (UInt32) num_in_bytes;
+    }
+
+    if (num_out_bytes)
+    {
+      _outSizeProcessed += num_out_bytes;
+      RINOK (WriteStream (outStream, _outBuf, num_out_bytes));
+    }
+
+    if (comp_failed)
+      return S_FALSE;
+
+    if (comp_finished)
+      break;
+
+    UInt64 inSize = _inSizeProcessed - startInProgress;
+    UInt64 outSize = _outSizeProcessed - startOutProgress;
+    if (progress)
+    {
+      RINOK (progress->SetRatioInfo (&inSize, &outSize));
+    }
+  }
+
+  return S_OK;
+}
+
+}}
+#endif
diff --git a/CPP/7zip/Compress/ZstdEncoder.h b/CPP/7zip/Compress/ZstdEncoder.h
index 986d8913..417d4cf3 100644
--- a/CPP/7zip/Compress/ZstdEncoder.h
+++ b/CPP/7zip/Compress/ZstdEncoder.h
@@ -1,77 +1,75 @@
-// ZstdEncoder.h
-// (C) 2016 Rich Geldreich, Tino Reichardt
-
-#include "StdAfx.h"
-
-#define ZSTD_STATIC_LINKING_ONLY
-#include "../../../C/Alloc.h"
-#include "../../../C/ZStd/zstd.h"
-#include "../../../C/ZStd/zbuff.h"
-
-#include "../../Common/Common.h"
-#include "../../Common/MyCom.h"
-#include "../ICoder.h"
-#include "../Common/StreamUtils.h"
-
-#ifndef EXTRACT_ONLY
-namespace NCompress {
-namespace NZSTD {
-
-struct CProps
-{
-  CProps() { clear (); }
-  void clear ()
-  {
-    memset (this, 0, sizeof (*this));
-    _ver_major = ZSTD_VERSION_MAJOR;
-    _ver_minor = ZSTD_VERSION_MINOR;
-    _level = 3;
-  }
-
-  Byte _ver_major;
-  Byte _ver_minor;
-  Byte _level;
-  Byte _reserved[2];
-};
-
-class CEncoder:
-  public ICompressCoder,
-  public ICompressSetCoderProperties,
-  public ICompressWriteCoderProperties,
-  public CMyUnknownImp
-{
-  ZBUFF_CCtx *_state;
-
-  CProps _props;
-
-  Byte *_inBuf;
-  Byte *_outBuf;
-  UInt32 _inPos;
-  UInt32 _inSize;
-
-  UInt32 _inBufSizeAllocated;
-  UInt32 _outBufSizeAllocated;
-  UInt32 _inBufSize;
-  UInt32 _outBufSize;
-
-  UInt64 _inSizeProcessed;
-  UInt64 _outSizeProcessed;
-
-  HRESULT CreateCompressor ();
-  HRESULT CreateBuffers ();
-
-public:
-    MY_UNKNOWN_IMP2 (ICompressSetCoderProperties, ICompressWriteCoderProperties)
-    STDMETHOD (Code) (ISequentialInStream * inStream, ISequentialOutStream *
-      outStream, const UInt64 * inSize, const UInt64 * outSize,
-      ICompressProgressInfo * progress);
-    STDMETHOD (SetCoderProperties) (const PROPID * propIDs,
-      const PROPVARIANT *props, UInt32 numProps);
-    STDMETHOD (WriteCoderProperties) (ISequentialOutStream * outStream);
-
-    CEncoder();
-    virtual ~CEncoder();
-};
-
-}}
-#endif
+// ZstdEncoder.h
+// (C) 2016 Rich Geldreich, Tino Reichardt
+
+#define ZSTD_STATIC_LINKING_ONLY
+#include "../../../C/Alloc.h"
+#include "../../../C/ZStd/zstd.h"
+#include "../../../C/ZStd/zbuff.h"
+
+#include "../../Common/Common.h"
+#include "../../Common/MyCom.h"
+#include "../ICoder.h"
+#include "../Common/StreamUtils.h"
+
+#ifndef EXTRACT_ONLY
+namespace NCompress {
+namespace NZSTD {
+
+struct CProps
+{
+  CProps() { clear (); }
+  void clear ()
+  {
+    memset (this, 0, sizeof (*this));
+    _ver_major = ZSTD_VERSION_MAJOR;
+    _ver_minor = ZSTD_VERSION_MINOR;
+    _level = 3;
+  }
+
+  Byte _ver_major;
+  Byte _ver_minor;
+  Byte _level;
+  Byte _reserved[2];
+};
+
+class CEncoder:
+  public ICompressCoder,
+  public ICompressSetCoderProperties,
+  public ICompressWriteCoderProperties,
+  public CMyUnknownImp
+{
+  ZBUFF_CCtx *_state;
+
+  CProps _props;
+
+  Byte *_inBuf;
+  Byte *_outBuf;
+  UInt32 _inPos;
+  UInt32 _inSize;
+
+  UInt32 _inBufSizeAllocated;
+  UInt32 _outBufSizeAllocated;
+  size_t _inBufSize;
+  size_t _outBufSize;
+
+  UInt64 _inSizeProcessed;
+  UInt64 _outSizeProcessed;
+
+  HRESULT CreateCompressor ();
+  HRESULT CreateBuffers ();
+
+public:
+    MY_UNKNOWN_IMP2 (ICompressSetCoderProperties, ICompressWriteCoderProperties)
+    STDMETHOD (Code) (ISequentialInStream * inStream, ISequentialOutStream *
+      outStream, const UInt64 * inSize, const UInt64 * outSize,
+      ICompressProgressInfo * progress);
+    STDMETHOD (SetCoderProperties) (const PROPID * propIDs,
+      const PROPVARIANT *props, UInt32 numProps);
+    STDMETHOD (WriteCoderProperties) (ISequentialOutStream * outStream);
+
+    CEncoder();
+    virtual ~CEncoder();
+};
+
+}}
+#endif
diff --git a/CPP/7zip/Compress/ZstdRegister.cpp b/CPP/7zip/Compress/ZstdRegister.cpp
index 5f293650..555aa8f0 100644
--- a/CPP/7zip/Compress/ZstdRegister.cpp
+++ b/CPP/7zip/Compress/ZstdRegister.cpp
@@ -1,18 +1,18 @@
-// ZstdRegister.cpp
-// (C) 2016 Rich Geldreich, Tino Reichardt
-
-#include "StdAfx.h"
-
-#include "../Common/RegisterCodec.h"
-
-#include "ZstdDecoder.h"
-
-#ifndef EXTRACT_ONLY
-#include "ZstdEncoder.h"
-#endif
-
-REGISTER_CODEC_E(
-  ZSTD,
-  NCompress::NZSTD::CDecoder(),
-  NCompress::NZSTD::CEncoder(),
-  0x4F71101, "ZSTD")
+// ZstdRegister.cpp
+// (C) 2016 Rich Geldreich, Tino Reichardt
+
+#include "StdAfx.h"
+
+#include "../Common/RegisterCodec.h"
+
+#include "ZstdDecoder.h"
+
+#ifndef EXTRACT_ONLY
+#include "ZstdEncoder.h"
+#endif
+
+REGISTER_CODEC_E(
+  ZSTD,
+  NCompress::NZSTD::CDecoder(),
+  NCompress::NZSTD::CEncoder(),
+  0x4F71101, "ZSTD")
diff --git a/CPP/7zip/zstd.mak b/CPP/7zip/zstd.mak
new file mode 100644
index 00000000..76d11379
--- /dev/null
+++ b/CPP/7zip/zstd.mak
@@ -0,0 +1,14 @@
+
+COMPRESS_OBJS = $(COMPRESS_OBJS) \
+  $O\ZstdDecoder.obj \
+  $O\ZstdEncoder.obj \
+  $O\ZstdRegister.obj \
+
+ZSTD_OBJS = \
+  $O\entropy_common.obj \
+  $O\fse_decompress.obj \
+  $O\huf_decompress.obj \
+  $O\zbuff_decompress.obj \
+  $O\zstd_common.obj \
+  $O\zstd_decompress.obj \
+  $O\xxhash.obj \
diff --git a/CPP/build-x32.cmd b/CPP/build-x32.cmd
index 6ca4bda5..78e1fe49 100644
--- a/CPP/build-x32.cmd
+++ b/CPP/build-x32.cmd
@@ -1,47 +1,60 @@
 @echo on
 
 set ROOT=Z:\projekte\7zip-ZStd\git\CPP\7zip
+set OUTDIR=%ROOT%\bin32
+mkdir %OUTDIR%
+
 set OPTS=MY_STATIC_LINK=1
 set LFLAGS=/SUBSYSTEM:WINDOWS,"5.01"
 
-mkdir %ROOT%\bin32
+cd %ROOT%\Bundles\Format7z
+nmake %OPTS%
+copy O\7za.dll %OUTDIR%\7za.dll
+
+cd %ROOT%\Bundles\Format7zExtract
+nmake %OPTS%
+copy O\7zxa.dll %OUTDIR%\7zxa.dll
+
+cd %ROOT%\Bundles\Format7zExtractR
+nmake %OPTS%
+copy O\7zxr.dll %OUTDIR%\7zxr.dll
 
 cd %ROOT%\Bundles\Format7zF
 nmake %OPTS%
-copy O\7z.dll %ROOT%\bin32\7z.dll
+copy O\7z.dll %OUTDIR%\7z.dll
 
-cd %ROOT%\Bundles\Format7zZStd
+cd %ROOT%\Bundles\Format7zR
 nmake %OPTS%
-copy O\7z.dll %ROOT%\bin32\7za.dll
+copy O\7zra.dll %OUTDIR%\7zra.dll
 
 cd %ROOT%\UI\FileManager
 nmake %OPTS%
-copy O\7zFM.exe %ROOT%\bin32\7zFM.exe
+copy O\7zFM.exe %OUTDIR%\7zFM.exe
 
 cd %ROOT%\UI\GUI
 nmake %OPTS%
-copy O\7zG.exe %ROOT%\bin32\7zG.exe
+copy O\7zG.exe %OUTDIR%\7zG.exe
 
 cd %ROOT%\Bundles\SFXWin
 nmake %OPTS%
-copy O\7z.sfx %ROOT%\bin32\7z.sfx
+copy O\7z.sfx %OUTDIR%\7z.sfx
 
 cd %ROOT%\..\..\C\Util\7zipInstall
 nmake %OPTS%
-copy O\7zipInstall.exe %ROOT%\bin32\Install-x32.exe
+copy O\7zipInstall.exe %OUTDIR%\Install-x32.exe
 
 cd %ROOT%\..\..\C\Util\7zipUninstall
 nmake %OPTS%
-copy O\7zipUninstall.exe %ROOT%\bin32\Uninstall.exe
+copy O\7zipUninstall.exe %OUTDIR%\Uninstall.exe
 
 set LFLAGS=/SUBSYSTEM:CONSOLE,"5.01"
 cd %ROOT%\UI\Console
 nmake %OPTS%
-copy O\7z.exe %ROOT%\bin32\7z.exe
+copy O\7z.exe %OUTDIR%\7z.exe
 
 cd %ROOT%\Bundles\SFXCon
 nmake %OPTS%
-copy O\7zCon.sfx %ROOT%\bin32\7zCon.sfx
+copy O\7zCon.sfx %OUTDIR%\7zCon.sfx
 
 :ende
 cd %ROOT%\..
diff --git a/CPP/build-x64.cmd b/CPP/build-x64.cmd
index b30cb5a5..8e3df600 100644
--- a/CPP/build-x64.cmd
+++ b/CPP/build-x64.cmd
@@ -1,46 +1,62 @@
 @echo on
 
 set ROOT=Z:\projekte\7zip-ZStd\git\CPP\7zip
+set OUTDIR=%ROOT%\bin64
+mkdir %OUTDIR%
+
 set OPTS=CPU=AMD64 MY_STATIC_LINK=1
 set LFLAGS=/SUBSYSTEM:WINDOWS,"5.02"
 
-mkdir %ROOT%\bin64
+cd %ROOT%\Bundles\Format7z
+nmake %OPTS%
+copy O\7za.dll %OUTDIR%\7za.dll
+
+goto ende
+
+cd %ROOT%\Bundles\Format7zExtract
+nmake %OPTS%
+copy O\7zxa.dll %OUTDIR%\7zxa.dll
+
+cd %ROOT%\Bundles\Format7zExtractR
+nmake %OPTS%
+copy O\7zxr.dll %OUTDIR%\7zxr.dll
 
 cd %ROOT%\Bundles\Format7zF
 nmake %OPTS%
-copy AMD64\7z.dll %ROOT%\bin64\7z.dll
+copy O\7z.dll %OUTDIR%\7z.dll
 
-cd %ROOT%\Bundles\Format7zZStd
+cd %ROOT%\Bundles\Format7zR
 nmake %OPTS%
-copy AMD64\7z.dll %ROOT%\bin64\7za.dll
+copy O\7zra.dll %OUTDIR%\7zra.dll
 
 cd %ROOT%\UI\FileManager
 nmake %OPTS%
-copy AMD64\7zFM.exe %ROOT%\bin64\7zFM.exe
+copy AMD64\7zFM.exe %OUTDIR%\7zFM.exe
 
 cd %ROOT%\UI\GUI
 nmake %OPTS%
-copy AMD64\7zG.exe %ROOT%\bin64\7zG.exe
+copy AMD64\7zG.exe %OUTDIR%\7zG.exe
 
 cd %ROOT%\Bundles\SFXWin
 nmake %OPTS%
-copy AMD64\7z.sfx %ROOT%\bin64\7z.sfx
+copy AMD64\7z.sfx %OUTDIR%\7z.sfx
 
 cd %ROOT%\..\..\C\Util\7zipInstall
 nmake %OPTS%
-copy AMD64\7zipInstall.exe %ROOT%\bin64\Install-x64.exe
+copy AMD64\7zipInstall.exe %OUTDIR%\Install-x64.exe
 
 cd %ROOT%\..\..\C\Util\7zipUninstall
 nmake %OPTS%
-copy AMD64\7zipUninstall.exe %ROOT%\bin64\Uninstall.exe
+copy AMD64\7zipUninstall.exe %OUTDIR%\Uninstall.exe
 
 set LFLAGS=/SUBSYSTEM:CONSOLE,"5.02"
 cd %ROOT%\UI\Console
 nmake %OPTS%
-copy AMD64\7z.exe %ROOT%\bin64\7z.exe
+copy AMD64\7z.exe %OUTDIR%\7z.exe
 
 cd %ROOT%\Bundles\SFXCon
 nmake %OPTS%
-copy AMD64\7zCon.sfx %ROOT%\bin64\7zCon.sfx
+copy AMD64\7zCon.sfx %OUTDIR%\7zCon.sfx
 
+:ende
 cd %ROOT%\..