Merge pull request #47890 from akien-mga/etcpak-compress-only

etcpak: We only need the compression code, remove rest of etcpak app

1 files changed, 0 insertions, 1516 deletions

diff --git a/thirdparty/etcpak/lz4/lz4.c b/thirdparty/etcpak/lz4/lz4.c
deleted file mode 100644
index 08cf6b5cd7..0000000000
--- a/thirdparty/etcpak/lz4/lz4.c
+++ /dev/null
@@ -1,1516 +0,0 @@
-/*
-   LZ4 - Fast LZ compression algorithm
-   Copyright (C) 2011-2015, 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 :
-   - LZ4 source repository : https://github.com/Cyan4973/lz4
-   - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
-*/
-
-
-/**************************************
-*  Tuning parameters
-**************************************/
-/*
- * HEAPMODE :
- * Select how default compression functions will allocate memory for their hash table,
- * in memory stack (0:default, fastest), or in memory heap (1:requires malloc()).
- */
-#define HEAPMODE 0
-
-/*
- * ACCELERATION_DEFAULT :
- * Select "acceleration" for LZ4_compress_fast() when parameter value <= 0
- */
-#define ACCELERATION_DEFAULT 1
-
-
-/**************************************
-*  CPU Feature Detection
-**************************************/
-/*
- * LZ4_FORCE_SW_BITCOUNT
- * Define this parameter if your target system or compiler does not support hardware bit count
- */
-#if defined(_MSC_VER) && defined(_WIN32_WCE)   /* Visual Studio for Windows CE does not support Hardware bit count */
-#  define LZ4_FORCE_SW_BITCOUNT
-#endif
-
-
-/**************************************
-*  Includes
-**************************************/
-#include "lz4.h"
-
-
-/**************************************
-*  Compiler Options
-**************************************/
-#ifdef _MSC_VER    /* Visual Studio */
-#  define FORCE_INLINE static __forceinline
-#  include <intrin.h>
-#  pragma warning(disable : 4127)        /* disable: C4127: conditional expression is constant */
-#  pragma warning(disable : 4293)        /* disable: C4293: too large shift (32-bits) */
-#else
-#  if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)   /* C99 */
-#    if defined(__GNUC__) || defined(__clang__)
-#      define FORCE_INLINE static inline __attribute__((always_inline))
-#    else
-#      define FORCE_INLINE static inline
-#    endif
-#  else
-#    define FORCE_INLINE static
-#  endif   /* __STDC_VERSION__ */
-#endif  /* _MSC_VER */
-
-/* LZ4_GCC_VERSION is defined into lz4.h */
-#if (LZ4_GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__)
-#  define expect(expr,value)    (__builtin_expect ((expr),(value)) )
-#else
-#  define expect(expr,value)    (expr)
-#endif
-
-#define likely(expr)     expect((expr) != 0, 1)
-#define unlikely(expr)   expect((expr) != 0, 0)
-
-
-/**************************************
-*  Memory routines
-**************************************/
-#include <stdlib.h>   /* malloc, calloc, free */
-#define ALLOCATOR(n,s) calloc(n,s)
-#define FREEMEM        free
-#include <string.h>   /* memset, memcpy */
-#define MEM_INIT       memset
-
-
-/**************************************
-*  Basic Types
-**************************************/
-#if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)   /* C99 */
-# include <stdint.h>
-  typedef  uint8_t BYTE;
-  typedef uint16_t U16;
-  typedef uint32_t U32;
-  typedef  int32_t S32;
-  typedef uint64_t U64;
-#else
-  typedef unsigned char       BYTE;
-  typedef unsigned short      U16;
-  typedef unsigned int        U32;
-  typedef   signed int        S32;
-  typedef unsigned long long  U64;
-#endif
-
-
-/**************************************
-*  Reading and writing into memory
-**************************************/
-#define STEPSIZE sizeof(size_t)
-
-static unsigned LZ4_64bits(void) { return sizeof(void*)==8; }
-
-static unsigned LZ4_isLittleEndian(void)
-{
-    const union { U32 i; BYTE c[4]; } one = { 1 };   /* don't use static : performance detrimental  */
-    return one.c[0];
-}
-
-
-static U16 LZ4_read16(const void* memPtr)
-{
-    U16 val16;
-    memcpy(&val16, memPtr, 2);
-    return val16;
-}
-
-static U16 LZ4_readLE16(const void* memPtr)
-{
-    if (LZ4_isLittleEndian())
-    {
-        return LZ4_read16(memPtr);
-    }
-    else
-    {
-        const BYTE* p = (const BYTE*)memPtr;
-        return (U16)((U16)p[0] + (p[1]<<8));
-    }
-}
-
-static void LZ4_writeLE16(void* memPtr, U16 value)
-{
-    if (LZ4_isLittleEndian())
-    {
-        memcpy(memPtr, &value, 2);
-    }
-    else
-    {
-        BYTE* p = (BYTE*)memPtr;
-        p[0] = (BYTE) value;
-        p[1] = (BYTE)(value>>8);
-    }
-}
-
-static U32 LZ4_read32(const void* memPtr)
-{
-    U32 val32;
-    memcpy(&val32, memPtr, 4);
-    return val32;
-}
-
-static U64 LZ4_read64(const void* memPtr)
-{
-    U64 val64;
-    memcpy(&val64, memPtr, 8);
-    return val64;
-}
-
-static size_t LZ4_read_ARCH(const void* p)
-{
-    if (LZ4_64bits())
-        return (size_t)LZ4_read64(p);
-    else
-        return (size_t)LZ4_read32(p);
-}
-
-
-static void LZ4_copy4(void* dstPtr, const void* srcPtr) { memcpy(dstPtr, srcPtr, 4); }
-
-static void LZ4_copy8(void* dstPtr, const void* srcPtr) { memcpy(dstPtr, srcPtr, 8); }
-
-/* customized version of memcpy, which may overwrite up to 7 bytes beyond dstEnd */
-static void LZ4_wildCopy(void* dstPtr, const void* srcPtr, void* dstEnd)
-{
-    BYTE* d = (BYTE*)dstPtr;
-    const BYTE* s = (const BYTE*)srcPtr;
-    BYTE* e = (BYTE*)dstEnd;
-    do { LZ4_copy8(d,s); d+=8; s+=8; } while (d<e);
-}
-
-
-/**************************************
-*  Common Constants
-**************************************/
-#define MINMATCH 4
-
-#define COPYLENGTH 8
-#define LASTLITERALS 5
-#define MFLIMIT (COPYLENGTH+MINMATCH)
-static const int LZ4_minLength = (MFLIMIT+1);
-
-#define KB *(1 <<10)
-#define MB *(1 <<20)
-#define GB *(1U<<30)
-
-#define MAXD_LOG 16
-#define MAX_DISTANCE ((1 << MAXD_LOG) - 1)
-
-#define ML_BITS  4
-#define ML_MASK  ((1U<<ML_BITS)-1)
-#define RUN_BITS (8-ML_BITS)
-#define RUN_MASK ((1U<<RUN_BITS)-1)
-
-
-/**************************************
-*  Common Utils
-**************************************/
-#define LZ4_STATIC_ASSERT(c)    { enum { LZ4_static_assert = 1/(int)(!!(c)) }; }   /* use only *after* variable declarations */
-
-
-/**************************************
-*  Common functions
-**************************************/
-static unsigned LZ4_NbCommonBytes (register size_t val)
-{
-    if (LZ4_isLittleEndian())
-    {
-        if (LZ4_64bits())
-        {
-#       if defined(_MSC_VER) && defined(_WIN64) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            unsigned long r = 0;
-            _BitScanForward64( &r, (U64)val );
-            return (int)(r>>3);
-#       elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            return (__builtin_ctzll((U64)val) >> 3);
-#       else
-            static const int DeBruijnBytePos[64] = { 0, 0, 0, 0, 0, 1, 1, 2, 0, 3, 1, 3, 1, 4, 2, 7, 0, 2, 3, 6, 1, 5, 3, 5, 1, 3, 4, 4, 2, 5, 6, 7, 7, 0, 1, 2, 3, 3, 4, 6, 2, 6, 5, 5, 3, 4, 5, 6, 7, 1, 2, 4, 6, 4, 4, 5, 7, 2, 6, 5, 7, 6, 7, 7 };
-            return DeBruijnBytePos[((U64)((val & -(long long)val) * 0x0218A392CDABBD3FULL)) >> 58];
-#       endif
-        }
-        else /* 32 bits */
-        {
-#       if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            unsigned long r;
-            _BitScanForward( &r, (U32)val );
-            return (int)(r>>3);
-#       elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            return (__builtin_ctz((U32)val) >> 3);
-#       else
-            static const int DeBruijnBytePos[32] = { 0, 0, 3, 0, 3, 1, 3, 0, 3, 2, 2, 1, 3, 2, 0, 1, 3, 3, 1, 2, 2, 2, 2, 0, 3, 1, 2, 0, 1, 0, 1, 1 };
-            return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
-#       endif
-        }
-    }
-    else   /* Big Endian CPU */
-    {
-        if (LZ4_64bits())
-        {
-#       if defined(_MSC_VER) && defined(_WIN64) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            unsigned long r = 0;
-            _BitScanReverse64( &r, val );
-            return (unsigned)(r>>3);
-#       elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            return (__builtin_clzll((U64)val) >> 3);
-#       else
-            unsigned r;
-            if (!(val>>32)) { r=4; } else { r=0; val>>=32; }
-            if (!(val>>16)) { r+=2; val>>=8; } else { val>>=24; }
-            r += (!val);
-            return r;
-#       endif
-        }
-        else /* 32 bits */
-        {
-#       if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            unsigned long r = 0;
-            _BitScanReverse( &r, (unsigned long)val );
-            return (unsigned)(r>>3);
-#       elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
-            return (__builtin_clz((U32)val) >> 3);
-#       else
-            unsigned r;
-            if (!(val>>16)) { r=2; val>>=8; } else { r=0; val>>=24; }
-            r += (!val);
-            return r;
-#       endif
-        }
-    }
-}
-
-static unsigned LZ4_count(const BYTE* pIn, const BYTE* pMatch, const BYTE* pInLimit)
-{
-    const BYTE* const pStart = pIn;
-
-    while (likely(pIn<pInLimit-(STEPSIZE-1)))
-    {
-        size_t diff = LZ4_read_ARCH(pMatch) ^ LZ4_read_ARCH(pIn);
-        if (!diff) { pIn+=STEPSIZE; pMatch+=STEPSIZE; continue; }
-        pIn += LZ4_NbCommonBytes(diff);
-        return (unsigned)(pIn - pStart);
-    }
-
-    if (LZ4_64bits()) if ((pIn<(pInLimit-3)) && (LZ4_read32(pMatch) == LZ4_read32(pIn))) { pIn+=4; pMatch+=4; }
-    if ((pIn<(pInLimit-1)) && (LZ4_read16(pMatch) == LZ4_read16(pIn))) { pIn+=2; pMatch+=2; }
-    if ((pIn<pInLimit) && (*pMatch == *pIn)) pIn++;
-    return (unsigned)(pIn - pStart);
-}
-
-
-#ifndef LZ4_COMMONDEFS_ONLY
-/**************************************
-*  Local Constants
-**************************************/
-#define LZ4_HASHLOG   (LZ4_MEMORY_USAGE-2)
-#define HASHTABLESIZE (1 << LZ4_MEMORY_USAGE)
-#define HASH_SIZE_U32 (1 << LZ4_HASHLOG)       /* required as macro for static allocation */
-
-static const int LZ4_64Klimit = ((64 KB) + (MFLIMIT-1));
-static const U32 LZ4_skipTrigger = 6;  /* Increase this value ==> compression run slower on incompressible data */
-
-
-/**************************************
-*  Local Structures and types
-**************************************/
-typedef struct {
-    U32 hashTable[HASH_SIZE_U32];
-    U32 currentOffset;
-    U32 initCheck;
-    const BYTE* dictionary;
-    BYTE* bufferStart;   /* obsolete, used for slideInputBuffer */
-    U32 dictSize;
-} LZ4_stream_t_internal;
-
-typedef enum { notLimited = 0, limitedOutput = 1 } limitedOutput_directive;
-typedef enum { byPtr, byU32, byU16 } tableType_t;
-
-typedef enum { noDict = 0, withPrefix64k, usingExtDict } dict_directive;
-typedef enum { noDictIssue = 0, dictSmall } dictIssue_directive;
-
-typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive;
-typedef enum { full = 0, partial = 1 } earlyEnd_directive;
-
-
-/**************************************
-*  Local Utils
-**************************************/
-int LZ4_versionNumber (void) { return LZ4_VERSION_NUMBER; }
-int LZ4_compressBound(int isize)  { return LZ4_COMPRESSBOUND(isize); }
-int LZ4_sizeofState() { return LZ4_STREAMSIZE; }
-
-
-
-/********************************
-*  Compression functions
-********************************/
-
-static U32 LZ4_hashSequence(U32 sequence, tableType_t const tableType)
-{
-    if (tableType == byU16)
-        return (((sequence) * 2654435761U) >> ((MINMATCH*8)-(LZ4_HASHLOG+1)));
-    else
-        return (((sequence) * 2654435761U) >> ((MINMATCH*8)-LZ4_HASHLOG));
-}
-
-static const U64 prime5bytes = 889523592379ULL;
-static U32 LZ4_hashSequence64(size_t sequence, tableType_t const tableType)
-{
-    const U32 hashLog = (tableType == byU16) ? LZ4_HASHLOG+1 : LZ4_HASHLOG;
-    const U32 hashMask = (1<<hashLog) - 1;
-    return ((sequence * prime5bytes) >> (40 - hashLog)) & hashMask;
-}
-
-static U32 LZ4_hashSequenceT(size_t sequence, tableType_t const tableType)
-{
-    if (LZ4_64bits())
-        return LZ4_hashSequence64(sequence, tableType);
-    return LZ4_hashSequence((U32)sequence, tableType);
-}
-
-static U32 LZ4_hashPosition(const void* p, tableType_t tableType) { return LZ4_hashSequenceT(LZ4_read_ARCH(p), tableType); }
-
-static void LZ4_putPositionOnHash(const BYTE* p, U32 h, void* tableBase, tableType_t const tableType, const BYTE* srcBase)
-{
-    switch (tableType)
-    {
-    case byPtr: { const BYTE** hashTable = (const BYTE**)tableBase; hashTable[h] = p; return; }
-    case byU32: { U32* hashTable = (U32*) tableBase; hashTable[h] = (U32)(p-srcBase); return; }
-    case byU16: { U16* hashTable = (U16*) tableBase; hashTable[h] = (U16)(p-srcBase); return; }
-    }
-}
-
-static void LZ4_putPosition(const BYTE* p, void* tableBase, tableType_t tableType, const BYTE* srcBase)
-{
-    U32 h = LZ4_hashPosition(p, tableType);
-    LZ4_putPositionOnHash(p, h, tableBase, tableType, srcBase);
-}
-
-static const BYTE* LZ4_getPositionOnHash(U32 h, void* tableBase, tableType_t tableType, const BYTE* srcBase)
-{
-    if (tableType == byPtr) { const BYTE** hashTable = (const BYTE**) tableBase; return hashTable[h]; }
-    if (tableType == byU32) { U32* hashTable = (U32*) tableBase; return hashTable[h] + srcBase; }
-    { U16* hashTable = (U16*) tableBase; return hashTable[h] + srcBase; }   /* default, to ensure a return */
-}
-
-static const BYTE* LZ4_getPosition(const BYTE* p, void* tableBase, tableType_t tableType, const BYTE* srcBase)
-{
-    U32 h = LZ4_hashPosition(p, tableType);
-    return LZ4_getPositionOnHash(h, tableBase, tableType, srcBase);
-}
-
-FORCE_INLINE int LZ4_compress_generic(
-                 void* const ctx,
-                 const char* const source,
-                 char* const dest,
-                 const int inputSize,
-                 const int maxOutputSize,
-                 const limitedOutput_directive outputLimited,
-                 const tableType_t tableType,
-                 const dict_directive dict,
-                 const dictIssue_directive dictIssue,
-                 const U32 acceleration)
-{
-    LZ4_stream_t_internal* const dictPtr = (LZ4_stream_t_internal*)ctx;
-
-    const BYTE* ip = (const BYTE*) source;
-    const BYTE* base;
-    const BYTE* lowLimit;
-    const BYTE* const lowRefLimit = ip - dictPtr->dictSize;
-    const BYTE* const dictionary = dictPtr->dictionary;
-    const BYTE* const dictEnd = dictionary + dictPtr->dictSize;
-    const size_t dictDelta = dictEnd - (const BYTE*)source;
-    const BYTE* anchor = (const BYTE*) source;
-    const BYTE* const iend = ip + inputSize;
-    const BYTE* const mflimit = iend - MFLIMIT;
-    const BYTE* const matchlimit = iend - LASTLITERALS;
-
-    BYTE* op = (BYTE*) dest;
-    BYTE* const olimit = op + maxOutputSize;
-
-    U32 forwardH;
-    size_t refDelta=0;
-
-    /* Init conditions */
-    if ((U32)inputSize > (U32)LZ4_MAX_INPUT_SIZE) return 0;   /* Unsupported input size, too large (or negative) */
-    switch(dict)
-    {
-    case noDict:
-    default:
-        base = (const BYTE*)source;
-        lowLimit = (const BYTE*)source;
-        break;
-    case withPrefix64k:
-        base = (const BYTE*)source - dictPtr->currentOffset;
-        lowLimit = (const BYTE*)source - dictPtr->dictSize;
-        break;
-    case usingExtDict:
-        base = (const BYTE*)source - dictPtr->currentOffset;
-        lowLimit = (const BYTE*)source;
-        break;
-    }
-    if ((tableType == byU16) && (inputSize>=LZ4_64Klimit)) return 0;   /* Size too large (not within 64K limit) */
-    if (inputSize<LZ4_minLength) goto _last_literals;                  /* Input too small, no compression (all literals) */
-
-    /* First Byte */
-    LZ4_putPosition(ip, ctx, tableType, base);
-    ip++; forwardH = LZ4_hashPosition(ip, tableType);
-
-    /* Main Loop */
-    for ( ; ; )
-    {
-        const BYTE* match;
-        BYTE* token;
-        {
-            const BYTE* forwardIp = ip;
-            unsigned step = 1;
-            unsigned searchMatchNb = acceleration << LZ4_skipTrigger;
-
-            /* Find a match */
-            do {
-                U32 h = forwardH;
-                ip = forwardIp;
-                forwardIp += step;
-                step = (searchMatchNb++ >> LZ4_skipTrigger);
-
-                if (unlikely(forwardIp > mflimit)) goto _last_literals;
-
-                match = LZ4_getPositionOnHash(h, ctx, tableType, base);
-                if (dict==usingExtDict)
-                {
-                    if (match<(const BYTE*)source)
-                    {
-                        refDelta = dictDelta;
-                        lowLimit = dictionary;
-                    }
-                    else
-                    {
-                        refDelta = 0;
-                        lowLimit = (const BYTE*)source;
-                    }
-                }
-                forwardH = LZ4_hashPosition(forwardIp, tableType);
-                LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
-
-            } while ( ((dictIssue==dictSmall) ? (match < lowRefLimit) : 0)
-                || ((tableType==byU16) ? 0 : (match + MAX_DISTANCE < ip))
-                || (LZ4_read32(match+refDelta) != LZ4_read32(ip)) );
-        }
-
-        /* Catch up */
-        while ((ip>anchor) && (match+refDelta > lowLimit) && (unlikely(ip[-1]==match[refDelta-1]))) { ip--; match--; }
-
-        {
-            /* Encode Literal length */
-            unsigned litLength = (unsigned)(ip - anchor);
-            token = op++;
-            if ((outputLimited) && (unlikely(op + litLength + (2 + 1 + LASTLITERALS) + (litLength/255) > olimit)))
-                return 0;   /* Check output limit */
-            if (litLength>=RUN_MASK)
-            {
-                int len = (int)litLength-RUN_MASK;
-                *token=(RUN_MASK<<ML_BITS);
-                for(; len >= 255 ; len-=255) *op++ = 255;
-                *op++ = (BYTE)len;
-            }
-            else *token = (BYTE)(litLength<<ML_BITS);
-
-            /* Copy Literals */
-            LZ4_wildCopy(op, anchor, op+litLength);
-            op+=litLength;
-        }
-
-_next_match:
-        /* Encode Offset */
-        LZ4_writeLE16(op, (U16)(ip-match)); op+=2;
-
-        /* Encode MatchLength */
-        {
-            unsigned matchLength;
-
-            if ((dict==usingExtDict) && (lowLimit==dictionary))
-            {
-                const BYTE* limit;
-                match += refDelta;
-                limit = ip + (dictEnd-match);
-                if (limit > matchlimit) limit = matchlimit;
-                matchLength = LZ4_count(ip+MINMATCH, match+MINMATCH, limit);
-                ip += MINMATCH + matchLength;
-                if (ip==limit)
-                {
-                    unsigned more = LZ4_count(ip, (const BYTE*)source, matchlimit);
-                    matchLength += more;
-                    ip += more;
-                }
-            }
-            else
-            {
-                matchLength = LZ4_count(ip+MINMATCH, match+MINMATCH, matchlimit);
-                ip += MINMATCH + matchLength;
-            }
-
-            if ((outputLimited) && (unlikely(op + (1 + LASTLITERALS) + (matchLength>>8) > olimit)))
-                return 0;    /* Check output limit */
-            if (matchLength>=ML_MASK)
-            {
-                *token += ML_MASK;
-                matchLength -= ML_MASK;
-                for (; matchLength >= 510 ; matchLength-=510) { *op++ = 255; *op++ = 255; }
-                if (matchLength >= 255) { matchLength-=255; *op++ = 255; }
-                *op++ = (BYTE)matchLength;
-            }
-            else *token += (BYTE)(matchLength);
-        }
-
-        anchor = ip;
-
-        /* Test end of chunk */
-        if (ip > mflimit) break;
-
-        /* Fill table */
-        LZ4_putPosition(ip-2, ctx, tableType, base);
-
-        /* Test next position */
-        match = LZ4_getPosition(ip, ctx, tableType, base);
-        if (dict==usingExtDict)
-        {
-            if (match<(const BYTE*)source)
-            {
-                refDelta = dictDelta;
-                lowLimit = dictionary;
-            }
-            else
-            {
-                refDelta = 0;
-                lowLimit = (const BYTE*)source;
-            }
-        }
-        LZ4_putPosition(ip, ctx, tableType, base);
-        if ( ((dictIssue==dictSmall) ? (match>=lowRefLimit) : 1)
-            && (match+MAX_DISTANCE>=ip)
-            && (LZ4_read32(match+refDelta)==LZ4_read32(ip)) )
-        { token=op++; *token=0; goto _next_match; }
-
-        /* Prepare next loop */
-        forwardH = LZ4_hashPosition(++ip, tableType);
-    }
-
-_last_literals:
-    /* Encode Last Literals */
-    {
-        const size_t lastRun = (size_t)(iend - anchor);
-        if ((outputLimited) && ((op - (BYTE*)dest) + lastRun + 1 + ((lastRun+255-RUN_MASK)/255) > (U32)maxOutputSize))
-            return 0;   /* Check output limit */
-        if (lastRun >= RUN_MASK)
-        {
-            size_t accumulator = lastRun - RUN_MASK;
-            *op++ = RUN_MASK << ML_BITS;
-            for(; accumulator >= 255 ; accumulator-=255) *op++ = 255;
-            *op++ = (BYTE) accumulator;
-        }
-        else
-        {
-            *op++ = (BYTE)(lastRun<<ML_BITS);
-        }
-        memcpy(op, anchor, lastRun);
-        op += lastRun;
-    }
-
-    /* End */
-    return (int) (((char*)op)-dest);
-}
-
-
-int LZ4_compress_fast_extState(void* state, const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
-    LZ4_resetStream((LZ4_stream_t*)state);
-    if (acceleration < 1) acceleration = ACCELERATION_DEFAULT;
-
-    if (maxOutputSize >= LZ4_compressBound(inputSize))
-    {
-        if (inputSize < LZ4_64Klimit)
-            return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, byU16,                        noDict, noDictIssue, acceleration);
-        else
-            return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
-    }
-    else
-    {
-        if (inputSize < LZ4_64Klimit)
-            return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limitedOutput, byU16,                        noDict, noDictIssue, acceleration);
-        else
-            return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limitedOutput, LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
-    }
-}
-
-
-int LZ4_compress_fast(const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
-#if (HEAPMODE)
-    void* ctxPtr = ALLOCATOR(1, sizeof(LZ4_stream_t));   /* malloc-calloc always properly aligned */
-#else
-    LZ4_stream_t ctx;
-    void* ctxPtr = &ctx;
-#endif
-
-    int result = LZ4_compress_fast_extState(ctxPtr, source, dest, inputSize, maxOutputSize, acceleration);
-
-#if (HEAPMODE)
-    FREEMEM(ctxPtr);
-#endif
-    return result;
-}
-
-
-int LZ4_compress_default(const char* source, char* dest, int inputSize, int maxOutputSize)
-{
-    return LZ4_compress_fast(source, dest, inputSize, maxOutputSize, 1);
-}
-
-
-/* hidden debug function */
-/* strangely enough, gcc generates faster code when this function is uncommented, even if unused */
-int LZ4_compress_fast_force(const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
-    LZ4_stream_t ctx;
-
-    LZ4_resetStream(&ctx);
-
-    if (inputSize < LZ4_64Klimit)
-        return LZ4_compress_generic(&ctx, source, dest, inputSize, maxOutputSize, limitedOutput, byU16,                        noDict, noDictIssue, acceleration);
-    else
-        return LZ4_compress_generic(&ctx, source, dest, inputSize, maxOutputSize, limitedOutput, LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
-}
-
-
-/********************************
-*  destSize variant
-********************************/
-
-static int LZ4_compress_destSize_generic(
-                       void* const ctx,
-                 const char* const src,
-                       char* const dst,
-                       int*  const srcSizePtr,
-                 const int targetDstSize,
-                 const tableType_t tableType)
-{
-    const BYTE* ip = (const BYTE*) src;
-    const BYTE* base = (const BYTE*) src;
-    const BYTE* lowLimit = (const BYTE*) src;
-    const BYTE* anchor = ip;
-    const BYTE* const iend = ip + *srcSizePtr;
-    const BYTE* const mflimit = iend - MFLIMIT;
-    const BYTE* const matchlimit = iend - LASTLITERALS;
-
-    BYTE* op = (BYTE*) dst;
-    BYTE* const oend = op + targetDstSize;
-    BYTE* const oMaxLit = op + targetDstSize - 2 /* offset */ - 8 /* because 8+MINMATCH==MFLIMIT */ - 1 /* token */;
-    BYTE* const oMaxMatch = op + targetDstSize - (LASTLITERALS + 1 /* token */);
-    BYTE* const oMaxSeq = oMaxLit - 1 /* token */;
-
-    U32 forwardH;
-
-
-    /* Init conditions */
-    if (targetDstSize < 1) return 0;                                     /* Impossible to store anything */
-    if ((U32)*srcSizePtr > (U32)LZ4_MAX_INPUT_SIZE) return 0;            /* Unsupported input size, too large (or negative) */
-    if ((tableType == byU16) && (*srcSizePtr>=LZ4_64Klimit)) return 0;   /* Size too large (not within 64K limit) */
-    if (*srcSizePtr<LZ4_minLength) goto _last_literals;                  /* Input too small, no compression (all literals) */
-
-    /* First Byte */
-    *srcSizePtr = 0;
-    LZ4_putPosition(ip, ctx, tableType, base);
-    ip++; forwardH = LZ4_hashPosition(ip, tableType);
-
-    /* Main Loop */
-    for ( ; ; )
-    {
-        const BYTE* match;
-        BYTE* token;
-        {
-            const BYTE* forwardIp = ip;
-            unsigned step = 1;
-            unsigned searchMatchNb = 1 << LZ4_skipTrigger;
-
-            /* Find a match */
-            do {
-                U32 h = forwardH;
-                ip = forwardIp;
-                forwardIp += step;
-                step = (searchMatchNb++ >> LZ4_skipTrigger);
-
-                if (unlikely(forwardIp > mflimit))
-                    goto _last_literals;
-
-                match = LZ4_getPositionOnHash(h, ctx, tableType, base);
-                forwardH = LZ4_hashPosition(forwardIp, tableType);
-                LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
-
-            } while ( ((tableType==byU16) ? 0 : (match + MAX_DISTANCE < ip))
-                || (LZ4_read32(match) != LZ4_read32(ip)) );
-        }
-
-        /* Catch up */
-        while ((ip>anchor) && (match > lowLimit) && (unlikely(ip[-1]==match[-1]))) { ip--; match--; }
-
-        {
-            /* Encode Literal length */
-            unsigned litLength = (unsigned)(ip - anchor);
-            token = op++;
-            if (op + ((litLength+240)/255) + litLength > oMaxLit)
-            {
-                /* Not enough space for a last match */
-                op--;
-                goto _last_literals;
-            }
-            if (litLength>=RUN_MASK)
-            {
-                unsigned len = litLength - RUN_MASK;
-                *token=(RUN_MASK<<ML_BITS);
-                for(; len >= 255 ; len-=255) *op++ = 255;
-                *op++ = (BYTE)len;
-            }
-            else *token = (BYTE)(litLength<<ML_BITS);
-
-            /* Copy Literals */
-            LZ4_wildCopy(op, anchor, op+litLength);
-            op += litLength;
-        }
-
-_next_match:
-        /* Encode Offset */
-        LZ4_writeLE16(op, (U16)(ip-match)); op+=2;
-
-        /* Encode MatchLength */
-        {
-            size_t matchLength;
-
-            matchLength = LZ4_count(ip+MINMATCH, match+MINMATCH, matchlimit);
-
-            if (op + ((matchLength+240)/255) > oMaxMatch)
-            {
-                /* Match description too long : reduce it */
-                matchLength = (15-1) + (oMaxMatch-op) * 255;
-            }
-            //printf("offset %5i, matchLength%5i \n", (int)(ip-match), matchLength + MINMATCH);
-            ip += MINMATCH + matchLength;
-
-            if (matchLength>=ML_MASK)
-            {
-                *token += ML_MASK;
-                matchLength -= ML_MASK;
-                while (matchLength >= 255) { matchLength-=255; *op++ = 255; }
-                *op++ = (BYTE)matchLength;
-            }
-            else *token += (BYTE)(matchLength);
-        }
-
-        anchor = ip;
-
-        /* Test end of block */
-        if (ip > mflimit) break;
-        if (op > oMaxSeq) break;
-
-        /* Fill table */
-        LZ4_putPosition(ip-2, ctx, tableType, base);
-
-        /* Test next position */
-        match = LZ4_getPosition(ip, ctx, tableType, base);
-        LZ4_putPosition(ip, ctx, tableType, base);
-        if ( (match+MAX_DISTANCE>=ip)
-            && (LZ4_read32(match)==LZ4_read32(ip)) )
-        { token=op++; *token=0; goto _next_match; }
-
-        /* Prepare next loop */
-        forwardH = LZ4_hashPosition(++ip, tableType);
-    }
-
-_last_literals:
-    /* Encode Last Literals */
-    {
-        size_t lastRunSize = (size_t)(iend - anchor);
-        if (op + 1 /* token */ + ((lastRunSize+240)/255) /* litLength */ + lastRunSize /* literals */ > oend)
-        {
-            /* adapt lastRunSize to fill 'dst' */
-            lastRunSize  = (oend-op) - 1;
-            lastRunSize -= (lastRunSize+240)/255;
-        }
-        ip = anchor + lastRunSize;
-
-        if (lastRunSize >= RUN_MASK)
-        {
-            size_t accumulator = lastRunSize - RUN_MASK;
-            *op++ = RUN_MASK << ML_BITS;
-            for(; accumulator >= 255 ; accumulator-=255) *op++ = 255;
-            *op++ = (BYTE) accumulator;
-        }
-        else
-        {
-            *op++ = (BYTE)(lastRunSize<<ML_BITS);
-        }
-        memcpy(op, anchor, lastRunSize);
-        op += lastRunSize;
-    }
-
-    /* End */
-    *srcSizePtr = (int) (((const char*)ip)-src);
-    return (int) (((char*)op)-dst);
-}
-
-
-static int LZ4_compress_destSize_extState (void* state, const char* src, char* dst, int* srcSizePtr, int targetDstSize)
-{
-    LZ4_resetStream((LZ4_stream_t*)state);
-
-    if (targetDstSize >= LZ4_compressBound(*srcSizePtr))   /* compression success is guaranteed */
-    {
-        return LZ4_compress_fast_extState(state, src, dst, *srcSizePtr, targetDstSize, 1);
-    }
-    else
-    {
-        if (*srcSizePtr < LZ4_64Klimit)
-            return LZ4_compress_destSize_generic(state, src, dst, srcSizePtr, targetDstSize, byU16);
-        else
-            return LZ4_compress_destSize_generic(state, src, dst, srcSizePtr, targetDstSize, LZ4_64bits() ? byU32 : byPtr);
-    }
-}
-
-
-int LZ4_compress_destSize(const char* src, char* dst, int* srcSizePtr, int targetDstSize)
-{
-#if (HEAPMODE)
-    void* ctx = ALLOCATOR(1, sizeof(LZ4_stream_t));   /* malloc-calloc always properly aligned */
-#else
-    LZ4_stream_t ctxBody;
-    void* ctx = &ctxBody;
-#endif
-
-    int result = LZ4_compress_destSize_extState(ctx, src, dst, srcSizePtr, targetDstSize);
-
-#if (HEAPMODE)
-    FREEMEM(ctx);
-#endif
-    return result;
-}
-
-
-
-/********************************
-*  Streaming functions
-********************************/
-
-LZ4_stream_t* LZ4_createStream(void)
-{
-    LZ4_stream_t* lz4s = (LZ4_stream_t*)ALLOCATOR(8, LZ4_STREAMSIZE_U64);
-    LZ4_STATIC_ASSERT(LZ4_STREAMSIZE >= sizeof(LZ4_stream_t_internal));    /* A compilation error here means LZ4_STREAMSIZE is not large enough */
-    LZ4_resetStream(lz4s);
-    return lz4s;
-}
-
-void LZ4_resetStream (LZ4_stream_t* LZ4_stream)
-{
-    MEM_INIT(LZ4_stream, 0, sizeof(LZ4_stream_t));
-}
-
-int LZ4_freeStream (LZ4_stream_t* LZ4_stream)
-{
-    FREEMEM(LZ4_stream);
-    return (0);
-}
-
-
-#define HASH_UNIT sizeof(size_t)
-int LZ4_loadDict (LZ4_stream_t* LZ4_dict, const char* dictionary, int dictSize)
-{
-    LZ4_stream_t_internal* dict = (LZ4_stream_t_internal*) LZ4_dict;
-    const BYTE* p = (const BYTE*)dictionary;
-    const BYTE* const dictEnd = p + dictSize;
-    const BYTE* base;
-
-    if ((dict->initCheck) || (dict->currentOffset > 1 GB))  /* Uninitialized structure, or reuse overflow */
-        LZ4_resetStream(LZ4_dict);
-
-    if (dictSize < (int)HASH_UNIT)
-    {
-        dict->dictionary = NULL;
-        dict->dictSize = 0;
-        return 0;
-    }
-
-    if ((dictEnd - p) > 64 KB) p = dictEnd - 64 KB;
-    dict->currentOffset += 64 KB;
-    base = p - dict->currentOffset;
-    dict->dictionary = p;
-    dict->dictSize = (U32)(dictEnd - p);
-    dict->currentOffset += dict->dictSize;
-
-    while (p <= dictEnd-HASH_UNIT)
-    {
-        LZ4_putPosition(p, dict->hashTable, byU32, base);
-        p+=3;
-    }
-
-    return dict->dictSize;
-}
-
-
-static void LZ4_renormDictT(LZ4_stream_t_internal* LZ4_dict, const BYTE* src)
-{
-    if ((LZ4_dict->currentOffset > 0x80000000) ||
-        ((size_t)LZ4_dict->currentOffset > (size_t)src))   /* address space overflow */
-    {
-        /* rescale hash table */
-        U32 delta = LZ4_dict->currentOffset - 64 KB;
-        const BYTE* dictEnd = LZ4_dict->dictionary + LZ4_dict->dictSize;
-        int i;
-        for (i=0; i<HASH_SIZE_U32; i++)
-        {
-            if (LZ4_dict->hashTable[i] < delta) LZ4_dict->hashTable[i]=0;
-            else LZ4_dict->hashTable[i] -= delta;
-        }
-        LZ4_dict->currentOffset = 64 KB;
-        if (LZ4_dict->dictSize > 64 KB) LZ4_dict->dictSize = 64 KB;
-        LZ4_dict->dictionary = dictEnd - LZ4_dict->dictSize;
-    }
-}
-
-
-int LZ4_compress_fast_continue (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
-    LZ4_stream_t_internal* streamPtr = (LZ4_stream_t_internal*)LZ4_stream;
-    const BYTE* const dictEnd = streamPtr->dictionary + streamPtr->dictSize;
-
-    const BYTE* smallest = (const BYTE*) source;
-    if (streamPtr->initCheck) return 0;   /* Uninitialized structure detected */
-    if ((streamPtr->dictSize>0) && (smallest>dictEnd)) smallest = dictEnd;
-    LZ4_renormDictT(streamPtr, smallest);
-    if (acceleration < 1) acceleration = ACCELERATION_DEFAULT;
-
-    /* Check overlapping input/dictionary space */
-    {
-        const BYTE* sourceEnd = (const BYTE*) source + inputSize;
-        if ((sourceEnd > streamPtr->dictionary) && (sourceEnd < dictEnd))
-        {
-            streamPtr->dictSize = (U32)(dictEnd - sourceEnd);
-            if (streamPtr->dictSize > 64 KB) streamPtr->dictSize = 64 KB;
-            if (streamPtr->dictSize < 4) streamPtr->dictSize = 0;
-            streamPtr->dictionary = dictEnd - streamPtr->dictSize;
-        }
-    }
-
-    /* prefix mode : source data follows dictionary */
-    if (dictEnd == (const BYTE*)source)
-    {
-        int result;
-        if ((streamPtr->dictSize < 64 KB) && (streamPtr->dictSize < streamPtr->currentOffset))
-            result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, withPrefix64k, dictSmall, acceleration);
-        else
-            result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, withPrefix64k, noDictIssue, acceleration);
-        streamPtr->dictSize += (U32)inputSize;
-        streamPtr->currentOffset += (U32)inputSize;
-        return result;
-    }
-
-    /* external dictionary mode */
-    {
-        int result;
-        if ((streamPtr->dictSize < 64 KB) && (streamPtr->dictSize < streamPtr->currentOffset))
-            result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, usingExtDict, dictSmall, acceleration);
-        else
-            result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, usingExtDict, noDictIssue, acceleration);
-        streamPtr->dictionary = (const BYTE*)source;
-        streamPtr->dictSize = (U32)inputSize;
-        streamPtr->currentOffset += (U32)inputSize;
-        return result;
-    }
-}
-
-
-/* Hidden debug function, to force external dictionary mode */
-int LZ4_compress_forceExtDict (LZ4_stream_t* LZ4_dict, const char* source, char* dest, int inputSize)
-{
-    LZ4_stream_t_internal* streamPtr = (LZ4_stream_t_internal*)LZ4_dict;
-    int result;
-    const BYTE* const dictEnd = streamPtr->dictionary + streamPtr->dictSize;
-
-    const BYTE* smallest = dictEnd;
-    if (smallest > (const BYTE*) source) smallest = (const BYTE*) source;
-    LZ4_renormDictT((LZ4_stream_t_internal*)LZ4_dict, smallest);
-
-    result = LZ4_compress_generic(LZ4_dict, source, dest, inputSize, 0, notLimited, byU32, usingExtDict, noDictIssue, 1);
-
-    streamPtr->dictionary = (const BYTE*)source;
-    streamPtr->dictSize = (U32)inputSize;
-    streamPtr->currentOffset += (U32)inputSize;
-
-    return result;
-}
-
-
-int LZ4_saveDict (LZ4_stream_t* LZ4_dict, char* safeBuffer, int dictSize)
-{
-    LZ4_stream_t_internal* dict = (LZ4_stream_t_internal*) LZ4_dict;
-    const BYTE* previousDictEnd = dict->dictionary + dict->dictSize;
-
-    if ((U32)dictSize > 64 KB) dictSize = 64 KB;   /* useless to define a dictionary > 64 KB */
-    if ((U32)dictSize > dict->dictSize) dictSize = dict->dictSize;
-
-    memmove(safeBuffer, previousDictEnd - dictSize, dictSize);
-
-    dict->dictionary = (const BYTE*)safeBuffer;
-    dict->dictSize = (U32)dictSize;
-
-    return dictSize;
-}
-
-
-
-/*******************************
-*  Decompression functions
-*******************************/
-/*
- * This generic decompression function cover all use cases.
- * It shall be instantiated several times, using different sets of directives
- * Note that it is essential this generic function is really inlined,
- * in order to remove useless branches during compilation optimization.
- */
-FORCE_INLINE int LZ4_decompress_generic(
-                 const char* const source,
-                 char* const dest,
-                 int inputSize,
-                 int outputSize,         /* If endOnInput==endOnInputSize, this value is the max size of Output Buffer. */
-
-                 int endOnInput,         /* endOnOutputSize, endOnInputSize */
-                 int partialDecoding,    /* full, partial */
-                 int targetOutputSize,   /* only used if partialDecoding==partial */
-                 int dict,               /* noDict, withPrefix64k, usingExtDict */
-                 const BYTE* const lowPrefix,  /* == dest if dict == noDict */
-                 const BYTE* const dictStart,  /* only if dict==usingExtDict */
-                 const size_t dictSize         /* note : = 0 if noDict */
-                 )
-{
-    /* Local Variables */
-    const BYTE* ip = (const BYTE*) source;
-    const BYTE* const iend = ip + inputSize;
-
-    BYTE* op = (BYTE*) dest;
-    BYTE* const oend = op + outputSize;
-    BYTE* cpy;
-    BYTE* oexit = op + targetOutputSize;
-    const BYTE* const lowLimit = lowPrefix - dictSize;
-
-    const BYTE* const dictEnd = (const BYTE*)dictStart + dictSize;
-    const size_t dec32table[] = {4, 1, 2, 1, 4, 4, 4, 4};
-    const size_t dec64table[] = {0, 0, 0, (size_t)-1, 0, 1, 2, 3};
-
-    const int safeDecode = (endOnInput==endOnInputSize);
-    const int checkOffset = ((safeDecode) && (dictSize < (int)(64 KB)));
-
-
-    /* Special cases */
-    if ((partialDecoding) && (oexit> oend-MFLIMIT)) oexit = oend-MFLIMIT;                         /* targetOutputSize too high => decode everything */
-    if ((endOnInput) && (unlikely(outputSize==0))) return ((inputSize==1) && (*ip==0)) ? 0 : -1;  /* Empty output buffer */
-    if ((!endOnInput) && (unlikely(outputSize==0))) return (*ip==0?1:-1);
-
-
-    /* Main Loop */
-    while (1)
-    {
-        unsigned token;
-        size_t length;
-        const BYTE* match;
-
-        /* get literal length */
-        token = *ip++;
-        if ((length=(token>>ML_BITS)) == RUN_MASK)
-        {
-            unsigned s;
-            do
-            {
-                s = *ip++;
-                length += s;
-            }
-            while (likely((endOnInput)?ip<iend-RUN_MASK:1) && (s==255));
-            if ((safeDecode) && unlikely((size_t)(op+length)<(size_t)(op))) goto _output_error;   /* overflow detection */
-            if ((safeDecode) && unlikely((size_t)(ip+length)<(size_t)(ip))) goto _output_error;   /* overflow detection */
-        }
-
-        /* copy literals */
-        cpy = op+length;
-        if (((endOnInput) && ((cpy>(partialDecoding?oexit:oend-MFLIMIT)) || (ip+length>iend-(2+1+LASTLITERALS))) )
-            || ((!endOnInput) && (cpy>oend-COPYLENGTH)))
-        {
-            if (partialDecoding)
-            {
-                if (cpy > oend) goto _output_error;                           /* Error : write attempt beyond end of output buffer */
-                if ((endOnInput) && (ip+length > iend)) goto _output_error;   /* Error : read attempt beyond end of input buffer */
-            }
-            else
-            {
-                if ((!endOnInput) && (cpy != oend)) goto _output_error;       /* Error : block decoding must stop exactly there */
-                if ((endOnInput) && ((ip+length != iend) || (cpy > oend))) goto _output_error;   /* Error : input must be consumed */
-            }
-            memcpy(op, ip, length);
-            ip += length;
-            op += length;
-            break;     /* Necessarily EOF, due to parsing restrictions */
-        }
-        LZ4_wildCopy(op, ip, cpy);
-        ip += length; op = cpy;
-
-        /* get offset */
-        match = cpy - LZ4_readLE16(ip); ip+=2;
-        if ((checkOffset) && (unlikely(match < lowLimit))) goto _output_error;   /* Error : offset outside destination buffer */
-
-        /* get matchlength */
-        length = token & ML_MASK;
-        if (length == ML_MASK)
-        {
-            unsigned s;
-            do
-            {
-                if ((endOnInput) && (ip > iend-LASTLITERALS)) goto _output_error;
-                s = *ip++;
-                length += s;
-            } while (s==255);
-            if ((safeDecode) && unlikely((size_t)(op+length)<(size_t)op)) goto _output_error;   /* overflow detection */
-        }
-        length += MINMATCH;
-
-        /* check external dictionary */
-        if ((dict==usingExtDict) && (match < lowPrefix))
-        {
-            if (unlikely(op+length > oend-LASTLITERALS)) goto _output_error;   /* doesn't respect parsing restriction */
-
-            if (length <= (size_t)(lowPrefix-match))
-            {
-                /* match can be copied as a single segment from external dictionary */
-                match = dictEnd - (lowPrefix-match);
-                memmove(op, match, length); op += length;
-            }
-            else
-            {
-                /* match encompass external dictionary and current segment */
-                size_t copySize = (size_t)(lowPrefix-match);
-                memcpy(op, dictEnd - copySize, copySize);
-                op += copySize;
-                copySize = length - copySize;
-                if (copySize > (size_t)(op-lowPrefix))   /* overlap within current segment */
-                {
-                    BYTE* const endOfMatch = op + copySize;
-                    const BYTE* copyFrom = lowPrefix;
-                    while (op < endOfMatch) *op++ = *copyFrom++;
-                }
-                else
-                {
-                    memcpy(op, lowPrefix, copySize);
-                    op += copySize;
-                }
-            }
-            continue;
-        }
-
-        /* copy repeated sequence */
-        cpy = op + length;
-        if (unlikely((op-match)<8))
-        {
-            const size_t dec64 = dec64table[op-match];
-            op[0] = match[0];
-            op[1] = match[1];
-            op[2] = match[2];
-            op[3] = match[3];
-            match += dec32table[op-match];
-            LZ4_copy4(op+4, match);
-            op += 8; match -= dec64;
-        } else { LZ4_copy8(op, match); op+=8; match+=8; }
-
-        if (unlikely(cpy>oend-12))
-        {
-            if (cpy > oend-LASTLITERALS) goto _output_error;    /* Error : last LASTLITERALS bytes must be literals */
-            if (op < oend-8)
-            {
-                LZ4_wildCopy(op, match, oend-8);
-                match += (oend-8) - op;
-                op = oend-8;
-            }
-            while (op<cpy) *op++ = *match++;
-        }
-        else
-            LZ4_wildCopy(op, match, cpy);
-        op=cpy;   /* correction */
-    }
-
-    /* end of decoding */
-    if (endOnInput)
-       return (int) (((char*)op)-dest);     /* Nb of output bytes decoded */
-    else
-       return (int) (((const char*)ip)-source);   /* Nb of input bytes read */
-
-    /* Overflow error detected */
-_output_error:
-    return (int) (-(((const char*)ip)-source))-1;
-}
-
-
-int LZ4_decompress_safe(const char* source, char* dest, int compressedSize, int maxDecompressedSize)
-{
-    return LZ4_decompress_generic(source, dest, compressedSize, maxDecompressedSize, endOnInputSize, full, 0, noDict, (BYTE*)dest, NULL, 0);
-}
-
-int LZ4_decompress_safe_partial(const char* source, char* dest, int compressedSize, int targetOutputSize, int maxDecompressedSize)
-{
-    return LZ4_decompress_generic(source, dest, compressedSize, maxDecompressedSize, endOnInputSize, partial, targetOutputSize, noDict, (BYTE*)dest, NULL, 0);
-}
-
-int LZ4_decompress_fast(const char* source, char* dest, int originalSize)
-{
-    return LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, withPrefix64k, (BYTE*)(dest - 64 KB), NULL, 64 KB);
-}
-
-
-/* streaming decompression functions */
-
-typedef struct
-{
-    const BYTE* externalDict;
-    size_t extDictSize;
-    const BYTE* prefixEnd;
-    size_t prefixSize;
-} LZ4_streamDecode_t_internal;
-
-/*
- * If you prefer dynamic allocation methods,
- * LZ4_createStreamDecode()
- * provides a pointer (void*) towards an initialized LZ4_streamDecode_t structure.
- */
-LZ4_streamDecode_t* LZ4_createStreamDecode(void)
-{
-    LZ4_streamDecode_t* lz4s = (LZ4_streamDecode_t*) ALLOCATOR(1, sizeof(LZ4_streamDecode_t));
-    return lz4s;
-}
-
-int LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream)
-{
-    FREEMEM(LZ4_stream);
-    return 0;
-}
-
-/*
- * LZ4_setStreamDecode
- * Use this function to instruct where to find the dictionary
- * This function is not necessary if previous data is still available where it was decoded.
- * Loading a size of 0 is allowed (same effect as no dictionary).
- * Return : 1 if OK, 0 if error
- */
-int LZ4_setStreamDecode (LZ4_streamDecode_t* LZ4_streamDecode, const char* dictionary, int dictSize)
-{
-    LZ4_streamDecode_t_internal* lz4sd = (LZ4_streamDecode_t_internal*) LZ4_streamDecode;
-    lz4sd->prefixSize = (size_t) dictSize;
-    lz4sd->prefixEnd = (const BYTE*) dictionary + dictSize;
-    lz4sd->externalDict = NULL;
-    lz4sd->extDictSize  = 0;
-    return 1;
-}
-
-/*
-*_continue() :
-    These decoding functions allow decompression of multiple blocks in "streaming" mode.
-    Previously decoded blocks must still be available at the memory position where they were decoded.
-    If it's not possible, save the relevant part of decoded data into a safe buffer,
-    and indicate where it stands using LZ4_setStreamDecode()
-*/
-int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int compressedSize, int maxOutputSize)
-{
-    LZ4_streamDecode_t_internal* lz4sd = (LZ4_streamDecode_t_internal*) LZ4_streamDecode;
-    int result;
-
-    if (lz4sd->prefixEnd == (BYTE*)dest)
-    {
-        result = LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize,
-                                        endOnInputSize, full, 0,
-                                        usingExtDict, lz4sd->prefixEnd - lz4sd->prefixSize, lz4sd->externalDict, lz4sd->extDictSize);
-        if (result <= 0) return result;
-        lz4sd->prefixSize += result;
-        lz4sd->prefixEnd  += result;
-    }
-    else
-    {
-        lz4sd->extDictSize = lz4sd->prefixSize;
-        lz4sd->externalDict = lz4sd->prefixEnd - lz4sd->extDictSize;
-        result = LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize,
-                                        endOnInputSize, full, 0,
-                                        usingExtDict, (BYTE*)dest, lz4sd->externalDict, lz4sd->extDictSize);
-        if (result <= 0) return result;
-        lz4sd->prefixSize = result;
-        lz4sd->prefixEnd  = (BYTE*)dest + result;
-    }
-
-    return result;
-}
-
-int LZ4_decompress_fast_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int originalSize)
-{
-    LZ4_streamDecode_t_internal* lz4sd = (LZ4_streamDecode_t_internal*) LZ4_streamDecode;
-    int result;
-
-    if (lz4sd->prefixEnd == (BYTE*)dest)
-    {
-        result = LZ4_decompress_generic(source, dest, 0, originalSize,
-                                        endOnOutputSize, full, 0,
-                                        usingExtDict, lz4sd->prefixEnd - lz4sd->prefixSize, lz4sd->externalDict, lz4sd->extDictSize);
-        if (result <= 0) return result;
-        lz4sd->prefixSize += originalSize;
-        lz4sd->prefixEnd  += originalSize;
-    }
-    else
-    {
-        lz4sd->extDictSize = lz4sd->prefixSize;
-        lz4sd->externalDict = (BYTE*)dest - lz4sd->extDictSize;
-        result = LZ4_decompress_generic(source, dest, 0, originalSize,
-                                        endOnOutputSize, full, 0,
-                                        usingExtDict, (BYTE*)dest, lz4sd->externalDict, lz4sd->extDictSize);
-        if (result <= 0) return result;
-        lz4sd->prefixSize = originalSize;
-        lz4sd->prefixEnd  = (BYTE*)dest + originalSize;
-    }
-
-    return result;
-}
-
-
-/*
-Advanced decoding functions :
-*_usingDict() :
-    These decoding functions work the same as "_continue" ones,
-    the dictionary must be explicitly provided within parameters
-*/
-
-FORCE_INLINE int LZ4_decompress_usingDict_generic(const char* source, char* dest, int compressedSize, int maxOutputSize, int safe, const char* dictStart, int dictSize)
-{
-    if (dictSize==0)
-        return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, noDict, (BYTE*)dest, NULL, 0);
-    if (dictStart+dictSize == dest)
-    {
-        if (dictSize >= (int)(64 KB - 1))
-            return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, withPrefix64k, (BYTE*)dest-64 KB, NULL, 0);
-        return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, noDict, (BYTE*)dest-dictSize, NULL, 0);
-    }
-    return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, usingExtDict, (BYTE*)dest, (const BYTE*)dictStart, dictSize);
-}
-
-int LZ4_decompress_safe_usingDict(const char* source, char* dest, int compressedSize, int maxOutputSize, const char* dictStart, int dictSize)
-{
-    return LZ4_decompress_usingDict_generic(source, dest, compressedSize, maxOutputSize, 1, dictStart, dictSize);
-}
-
-int LZ4_decompress_fast_usingDict(const char* source, char* dest, int originalSize, const char* dictStart, int dictSize)
-{
-    return LZ4_decompress_usingDict_generic(source, dest, 0, originalSize, 0, dictStart, dictSize);
-}
-
-/* debug function */
-int LZ4_decompress_safe_forceExtDict(const char* source, char* dest, int compressedSize, int maxOutputSize, const char* dictStart, int dictSize)
-{
-    return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0, usingExtDict, (BYTE*)dest, (const BYTE*)dictStart, dictSize);
-}
-
-
-/***************************************************
-*  Obsolete Functions
-***************************************************/
-/* obsolete compression functions */
-int LZ4_compress_limitedOutput(const char* source, char* dest, int inputSize, int maxOutputSize) { return LZ4_compress_default(source, dest, inputSize, maxOutputSize); }
-int LZ4_compress(const char* source, char* dest, int inputSize) { return LZ4_compress_default(source, dest, inputSize, LZ4_compressBound(inputSize)); }
-int LZ4_compress_limitedOutput_withState (void* state, const char* src, char* dst, int srcSize, int dstSize) { return LZ4_compress_fast_extState(state, src, dst, srcSize, dstSize, 1); }
-int LZ4_compress_withState (void* state, const char* src, char* dst, int srcSize) { return LZ4_compress_fast_extState(state, src, dst, srcSize, LZ4_compressBound(srcSize), 1); }
-int LZ4_compress_limitedOutput_continue (LZ4_stream_t* LZ4_stream, const char* src, char* dst, int srcSize, int maxDstSize) { return LZ4_compress_fast_continue(LZ4_stream, src, dst, srcSize, maxDstSize, 1); }
-int LZ4_compress_continue (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize) { return LZ4_compress_fast_continue(LZ4_stream, source, dest, inputSize, LZ4_compressBound(inputSize), 1); }
-
-/*
-These function names are deprecated and should no longer be used.
-They are only provided here for compatibility with older user programs.
-- LZ4_uncompress is totally equivalent to LZ4_decompress_fast
-- LZ4_uncompress_unknownOutputSize is totally equivalent to LZ4_decompress_safe
-*/
-int LZ4_uncompress (const char* source, char* dest, int outputSize) { return LZ4_decompress_fast(source, dest, outputSize); }
-int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize) { return LZ4_decompress_safe(source, dest, isize, maxOutputSize); }
-
-
-/* Obsolete Streaming functions */
-
-int LZ4_sizeofStreamState() { return LZ4_STREAMSIZE; }
-
-static void LZ4_init(LZ4_stream_t_internal* lz4ds, BYTE* base)
-{
-    MEM_INIT(lz4ds, 0, LZ4_STREAMSIZE);
-    lz4ds->bufferStart = base;
-}
-
-int LZ4_resetStreamState(void* state, char* inputBuffer)
-{
-    if ((((size_t)state) & 3) != 0) return 1;   /* Error : pointer is not aligned on 4-bytes boundary */
-    LZ4_init((LZ4_stream_t_internal*)state, (BYTE*)inputBuffer);
-    return 0;
-}
-
-void* LZ4_create (char* inputBuffer)
-{
-    void* lz4ds = ALLOCATOR(8, LZ4_STREAMSIZE_U64);
-    LZ4_init ((LZ4_stream_t_internal*)lz4ds, (BYTE*)inputBuffer);
-    return lz4ds;
-}
-
-char* LZ4_slideInputBuffer (void* LZ4_Data)
-{
-    LZ4_stream_t_internal* ctx = (LZ4_stream_t_internal*)LZ4_Data;
-    int dictSize = LZ4_saveDict((LZ4_stream_t*)LZ4_Data, (char*)ctx->bufferStart, 64 KB);
-    return (char*)(ctx->bufferStart + dictSize);
-}
-
-/* Obsolete streaming decompression functions */
-
-int LZ4_decompress_safe_withPrefix64k(const char* source, char* dest, int compressedSize, int maxOutputSize)
-{
-    return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0, withPrefix64k, (BYTE*)dest - 64 KB, NULL, 64 KB);
-}
-
-int LZ4_decompress_fast_withPrefix64k(const char* source, char* dest, int originalSize)
-{
-    return LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, withPrefix64k, (BYTE*)dest - 64 KB, NULL, 64 KB);
-}
-
-#endif   /* LZ4_COMMONDEFS_ONLY */
-