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/*
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* Copyright (c) 2020 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* $Id: //eng/vdo-releases/aluminum/src/c++/vdo/base/lz4.c#2 $
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*/
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// Get the memcpy fixup from common.h.
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#include "common.h"
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/*
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LZ4 - Fast LZ compression algorithm
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Copyright (C) 2011-2012, Yann Collet.
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BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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You can contact the author at :
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- LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
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- LZ4 source repository : http://code.google.com/p/lz4/
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*/
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/*
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* With authors permission dual licensed as BSD/GPL for linux kernel
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*
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* Origin: http://lz4.googlecode.com/svn/trunk
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* Revision: 88
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*/
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//**************************************
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// Tuning parameters
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//**************************************
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// MEMORY_USAGE :
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// Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
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// Increasing memory usage improves compression ratio
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// Reduced memory usage can improve speed, due to cache effect
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// Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
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#define MEMORY_USAGE 14
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// NOTCOMPRESSIBLE_DETECTIONLEVEL :
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// Decreasing this value will make the algorithm skip faster data segments considered "incompressible"
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// This may decrease compression ratio dramatically, but will be faster on incompressible data
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// Increasing this value will make the algorithm search more before declaring a segment "incompressible"
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// This could improve compression a bit, but will be slower on incompressible data
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// The default value (6) is recommended
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#define NOTCOMPRESSIBLE_DETECTIONLEVEL 6
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// BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE :
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// This will provide a small boost to performance for big endian cpu, but the resulting compressed stream will be incompatible with little-endian CPU.
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// You can set this option to 1 in situations where data will remain within closed environment
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// This option is useless on Little_Endian CPU (such as x86)
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//#define BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE 1
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//**************************************
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// CPU Feature Detection
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//**************************************
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// 32 or 64 bits ?
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#if (defined(__x86_64__) || defined(__x86_64) || defined(__amd64__) || defined(__amd64) || defined(__ppc64__) || defined(_WIN64) || defined(__LP64__) || defined(_LP64) ) // Detects 64 bits mode
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# define LZ4_ARCH64 1
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#else
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# define LZ4_ARCH64 0
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#endif
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// Little Endian or Big Endian ?
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// GCC normally defines these three macros (and PDP-endian which we ignore).
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#if !defined(__ORDER_LITTLE_ENDIAN__) || !defined(__ORDER_BIG_ENDIAN__) \
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|| !defined(__BYTE_ORDER__)
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#error "GCC byte order macros not defined?"
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#endif
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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# define LZ4_BIG_ENDIAN 1
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#elif __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
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# error "fix byte order check"
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#endif
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// Unaligned memory access is automatically enabled for "common" CPU, such as x86.
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// For others CPU, the compiler will be more cautious, and insert extra code to ensure aligned access is respected
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// If you know your target CPU supports unaligned memory access, you want to force this option manually to improve performance
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#if defined(__ARM_FEATURE_UNALIGNED)
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# define LZ4_FORCE_UNALIGNED_ACCESS 1
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#endif
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// Define this parameter if your target system or compiler does not support hardware bit count
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#if defined(_MSC_VER) && defined(_WIN32_WCE) // Visual Studio for Windows CE does not support Hardware bit count
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# define LZ4_FORCE_SW_BITCOUNT
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#endif
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//**************************************
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// Compiler Options
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//**************************************
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#if __STDC_VERSION__ >= 199901L // C99
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/* "restrict" is a known keyword */
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#else
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# define restrict // Disable restrict
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#endif
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#define _GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
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#ifdef _MSC_VER // Visual Studio
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# include <intrin.h> // For Visual 2005
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# if LZ4_ARCH64 // 64-bit
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# pragma intrinsic(_BitScanForward64) // For Visual 2005
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# pragma intrinsic(_BitScanReverse64) // For Visual 2005
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# else
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# pragma intrinsic(_BitScanForward) // For Visual 2005
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# pragma intrinsic(_BitScanReverse) // For Visual 2005
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# endif
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#endif
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#ifdef _MSC_VER
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# define lz4_bswap16(x) _byteswap_ushort(x)
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#else
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# define lz4_bswap16(x) ((unsigned short int) ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8)))
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#endif
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#if (_GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__)
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# define expect(expr,value) (__builtin_expect ((expr),(value)) )
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#else
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# define expect(expr,value) (expr)
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#endif
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//**************************************
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// Includes
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//**************************************
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#ifdef __KERNEL__
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# include <linux/string.h> // for memset
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#else /* __KERNEL__ */
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# include <stdlib.h> // for malloc
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# include <string.h> // for memset
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#endif /* __KERNEL__ */
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#include "lz4.h"
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//**************************************
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// Basic Types
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//**************************************
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#if defined(_MSC_VER) // Visual Studio does not support 'stdint' natively
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# define BYTE unsigned __int8
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# define U16 unsigned __int16
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# define U32 unsigned __int32
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# define S32 __int32
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# define U64 unsigned __int64
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#else
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# ifdef __KERNEL__
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# include <linux/types.h>
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# else /* __KERNEL__ */
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# include <stdint.h>
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# endif /* __KERNEL__ */
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# define BYTE uint8_t
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# define U16 uint16_t
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# define U32 uint32_t
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# define S32 int32_t
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# define U64 uint64_t
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#endif
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#ifndef LZ4_FORCE_UNALIGNED_ACCESS
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# pragma pack(push, 1)
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#endif
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typedef struct _U16_S { U16 v; } U16_S;
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typedef struct _U32_S { U32 v; } U32_S;
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typedef struct _U64_S { U64 v; } U64_S;
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#ifndef LZ4_FORCE_UNALIGNED_ACCESS
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# pragma pack(pop)
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#endif
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#define A64(x) (((U64_S *)(x))->v)
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#define A32(x) (((U32_S *)(x))->v)
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#define A16(x) (((U16_S *)(x))->v)
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//**************************************
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// Constants
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//**************************************
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#define MINMATCH 4
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#define HASH_LOG (MEMORY_USAGE-2)
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#define HASHTABLESIZE (1 << HASH_LOG)
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#define HASH_MASK (HASHTABLESIZE - 1)
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#define SKIPSTRENGTH (NOTCOMPRESSIBLE_DETECTIONLEVEL>2?NOTCOMPRESSIBLE_DETECTIONLEVEL:2)
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#define STACKLIMIT 13
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#define HEAPMODE (HASH_LOG>STACKLIMIT) // Defines if memory is allocated into the stack (local variable), or into the heap (malloc()).
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#define COPYLENGTH 8
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#define LASTLITERALS 5
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#define MFLIMIT (COPYLENGTH+MINMATCH)
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#define MINLENGTH (MFLIMIT+1)
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#define MAXD_LOG 16
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#define MAX_DISTANCE ((1 << MAXD_LOG) - 1)
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#define ML_BITS 4
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#define ML_MASK ((1U<
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#define RUN_BITS (8-ML_BITS)
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#define RUN_MASK ((1U<
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/*
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* Disable on-stack context allocation for linux kernel
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*/
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#undef STACKLIMIT
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#define STACKLIMIT 0
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//**************************************
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// Architecture-specific macros
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//**************************************
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#if LZ4_ARCH64 // 64-bit
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# define STEPSIZE 8
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# define UARCH U64
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# define AARCH A64
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# define LZ4_COPYSTEP(s,d) A64(d) = A64(s); d+=8; s+=8;
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# define LZ4_COPYPACKET(s,d) LZ4_COPYSTEP(s,d)
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# define LZ4_SECURECOPY(s,d,e) if (d
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# define HTYPE U32
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# define INITBASE(base) const BYTE* const base = ip
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#else // 32-bit
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# define STEPSIZE 4
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# define UARCH U32
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# define AARCH A32
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# define LZ4_COPYSTEP(s,d) A32(d) = A32(s); d+=4; s+=4;
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# define LZ4_COPYPACKET(s,d) LZ4_COPYSTEP(s,d); LZ4_COPYSTEP(s,d);
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# define LZ4_SECURECOPY LZ4_WILDCOPY
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# define HTYPE const BYTE*
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# define INITBASE(base) const int base = 0
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#endif
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#if (defined(LZ4_BIG_ENDIAN) && !defined(BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE))
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# define LZ4_READ_LITTLEENDIAN_16(d,s,p) { U16 v = A16(p); v = lz4_bswap16(v); d = (s) - v; }
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# define LZ4_WRITE_LITTLEENDIAN_16(p,i) { U16 v = (U16)(i); v = lz4_bswap16(v); A16(p) = v; p+=2; }
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#else // Little Endian
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# define LZ4_READ_LITTLEENDIAN_16(d,s,p) { d = (s) - A16(p); }
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# define LZ4_WRITE_LITTLEENDIAN_16(p,v) { A16(p) = v; p+=2; }
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#endif
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//**************************************
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// Local structures
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//**************************************
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struct refTables
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{
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HTYPE hashTable[HASHTABLESIZE];
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};
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//**************************************
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// Macros
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//**************************************
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#define LZ4_HASH_FUNCTION(i) (((i) * 2654435761U) >> ((MINMATCH*8)-HASH_LOG))
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#define LZ4_HASH_VALUE(p) LZ4_HASH_FUNCTION(A32(p))
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#define LZ4_WILDCOPY(s,d,e) do { LZ4_COPYPACKET(s,d) } while (d
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#define LZ4_BLINDCOPY(s,d,l) { BYTE* e=(d)+l; LZ4_WILDCOPY(s,d,e); d=e; }
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//****************************
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// Private functions
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//****************************
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#if LZ4_ARCH64
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static inline int LZ4_NbCommonBytes (register U64 val)
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{
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#if defined(LZ4_BIG_ENDIAN)
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#if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
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unsigned long r = 0;
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_BitScanReverse64( &r, val );
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return (int)(r>>3);
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#elif defined(__GNUC__) && (_GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
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return (__builtin_clzll(val) >> 3);
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#else
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int r;
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if (!(val>>32)) { r=4; } else { r=0; val>>=32; }
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if (!(val>>16)) { r+=2; val>>=8; } else { val>>=24; }
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r += (!val);
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return r;
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#endif
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#else
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#if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
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unsigned long r = 0;
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_BitScanForward64( &r, val );
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return (int)(r>>3);
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#elif defined(__GNUC__) && (_GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
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return (__builtin_ctzll(val) >> 3);
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#else
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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 };
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return DeBruijnBytePos[((U64)((val & -val) * 0x0218A392CDABBD3F)) >> 58];
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#endif
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#endif
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}
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#else
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static inline int LZ4_NbCommonBytes (register U32 val)
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{
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#if defined(LZ4_BIG_ENDIAN)
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#if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
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unsigned long r = 0;
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_BitScanReverse( &r, val );
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return (int)(r>>3);
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#elif defined(__GNUC__) && (_GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
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return (__builtin_clz(val) >> 3);
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#else
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int r;
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if (!(val>>16)) { r=2; val>>=8; } else { r=0; val>>=24; }
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r += (!val);
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return r;
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#endif
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#else
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#if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
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unsigned long r = 0;
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_BitScanForward( &r, val );
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return (int)(r>>3);
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#elif defined(__GNUC__) && (_GCC_VERSION >= 304) && !defined(LZ4_FORCE_SW_BITCOUNT)
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return (__builtin_ctz(val) >> 3);
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#else
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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 };
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return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
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#endif
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#endif
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}
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#endif
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//******************************
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// Compression functions
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//******************************
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310c69 |
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// LZ4_compressCtx :
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// -----------------
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// Compress 'isize' bytes from 'source' into an output buffer 'dest' of maximum size 'maxOutputSize'.
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// If it cannot achieve it, compression will stop, and result of the function will be zero.
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// return : the number of bytes written in buffer 'dest', or 0 if the compression fails
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static inline int LZ4_compressCtx(void** ctx,
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const char* source,
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char* dest,
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int isize,
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int maxOutputSize)
|
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310c69 |
{
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#if HEAPMODE
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struct refTables *srt = (struct refTables *) (*ctx);
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310c69 |
HTYPE* HashTable;
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#else
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HTYPE HashTable[HASHTABLESIZE] = {0};
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#endif
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const BYTE* ip = (BYTE*) source;
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INITBASE(base);
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const BYTE* anchor = ip;
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const BYTE* const iend = ip + isize;
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const BYTE* const mflimit = iend - MFLIMIT;
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#define matchlimit (iend - LASTLITERALS)
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BYTE* op = (BYTE*) dest;
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BYTE* const oend = op + maxOutputSize;
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310c69 |
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int len, length;
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310c69 |
const int skipStrength = SKIPSTRENGTH;
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U32 forwardH;
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310c69 |
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310c69 |
|
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// Init
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if (isize
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#if HEAPMODE
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HashTable = (HTYPE*)(srt->hashTable);
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310c69 |
memset((void*)HashTable, 0, sizeof(srt->hashTable));
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310c69 |
#else
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(void) ctx;
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310c69 |
#endif
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310c69 |
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310c69 |
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// First Byte
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HashTable[LZ4_HASH_VALUE(ip)] = ip - base;
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ip++; forwardH = LZ4_HASH_VALUE(ip);
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310c69 |
|
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// Main Loop
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for ( ; ; )
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{
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int findMatchAttempts = (1U << skipStrength) + 3;
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310c69 |
const BYTE* forwardIp = ip;
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310c69 |
const BYTE* ref;
|
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310c69 |
BYTE* token;
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310c69 |
|
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// Find a match
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do {
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310c69 |
U32 h = forwardH;
|
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310c69 |
int step = findMatchAttempts++ >> skipStrength;
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310c69 |
ip = forwardIp;
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310c69 |
forwardIp = ip + step;
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310c69 |
|
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310c69 |
if (unlikely(forwardIp > mflimit)) { goto _last_literals; }
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310c69 |
|
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forwardH = LZ4_HASH_VALUE(forwardIp);
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ref = base + HashTable[h];
|
|
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HashTable[h] = ip - base;
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310c69 |
|
|
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310c69 |
} while ((ref < ip - MAX_DISTANCE) || (A32(ref) != A32(ip)));
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310c69 |
|
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310c69 |
// Catch up
|
|
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while ((ip>anchor) && (ref>(BYTE*)source) && unlikely(ip[-1]==ref[-1])) { ip--; ref--; }
|
|
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310c69 |
|
|
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// Encode Literal length
|
|
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length = (int)(ip - anchor);
|
|
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310c69 |
token = op++;
|
|
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310c69 |
if (unlikely(op + length + (2 + 1 + LASTLITERALS) + (length>>8) > oend)) return 0; // Check output limit
|
|
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310c69 |
#ifdef _MSC_VER
|
|
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310c69 |
if (length>=(int)RUN_MASK)
|
|
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310c69 |
{
|
|
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310c69 |
int len = length-RUN_MASK;
|
|
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310c69 |
*token=(RUN_MASK<
|
|
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310c69 |
if (len>254)
|
|
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310c69 |
{
|
|
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310c69 |
do { *op++ = 255; len -= 255; } while (len>254);
|
|
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310c69 |
*op++ = (BYTE)len;
|
|
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310c69 |
memcpy(op, anchor, length);
|
|
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310c69 |
op += length;
|
|
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310c69 |
goto _next_match;
|
|
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310c69 |
}
|
|
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else
|
|
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*op++ = (BYTE)len;
|
|
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310c69 |
}
|
|
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310c69 |
else *token = (length<
|
|
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#else
|
|
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310c69 |
if (length>=(int)RUN_MASK) { *token=(RUN_MASK<<ML_BITS); len = length-RUN_MASK; for(; len > 254 ; len-=255) *op++ = 255; *op++ = (BYTE)len; }
|
|
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else *token = (length<
|
|
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#endif
|
|
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310c69 |
|
|
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310c69 |
// Copy Literals
|
|
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310c69 |
LZ4_BLINDCOPY(anchor, op, length);
|
|
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310c69 |
|
|
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310c69 |
_next_match:
|
|
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310c69 |
// Encode Offset
|
|
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310c69 |
LZ4_WRITE_LITTLEENDIAN_16(op,(U16)(ip-ref));
|
|
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310c69 |
|
|
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310c69 |
// Start Counting
|
|
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310c69 |
ip+=MINMATCH; ref+=MINMATCH; // MinMatch verified
|
|
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310c69 |
anchor = ip;
|
|
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310c69 |
while (likely(ip
|
|
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310c69 |
{
|
|
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310c69 |
UARCH diff = AARCH(ref) ^ AARCH(ip);
|
|
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310c69 |
if (!diff) { ip+=STEPSIZE; ref+=STEPSIZE; continue; }
|
|
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310c69 |
ip += LZ4_NbCommonBytes(diff);
|
|
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310c69 |
goto _endCount;
|
|
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310c69 |
}
|
|
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310c69 |
if (LZ4_ARCH64) if ((ip<(matchlimit-3)) && (A32(ref) == A32(ip))) { ip+=4; ref+=4; }
|
|
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310c69 |
if ((ip<(matchlimit-1)) && (A16(ref) == A16(ip))) { ip+=2; ref+=2; }
|
|
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310c69 |
if ((ip
|
|
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310c69 |
_endCount:
|
|
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310c69 |
|
|
Packit Service |
310c69 |
// Encode MatchLength
|
|
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310c69 |
len = (int)(ip - anchor);
|
|
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310c69 |
if (unlikely(op + (1 + LASTLITERALS) + (len>>8) > oend)) return 0; // Check output limit
|
|
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310c69 |
if (len>=(int)ML_MASK) { *token+=ML_MASK; len-=ML_MASK; for(; len > 509 ; len-=510) { *op++ = 255; *op++ = 255; } if (len > 254) { len-=255; *op++ = 255; } *op++ = (BYTE)len; }
|
|
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310c69 |
else *token += len;
|
|
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310c69 |
|
|
Packit Service |
310c69 |
// Test end of chunk
|
|
Packit Service |
310c69 |
if (ip > mflimit) { anchor = ip; break; }
|
|
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310c69 |
|
|
Packit Service |
310c69 |
// Fill table
|
|
Packit Service |
310c69 |
HashTable[LZ4_HASH_VALUE(ip-2)] = ip - 2 - base;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Test next position
|
|
Packit Service |
310c69 |
ref = base + HashTable[LZ4_HASH_VALUE(ip)];
|
|
Packit Service |
310c69 |
HashTable[LZ4_HASH_VALUE(ip)] = ip - base;
|
|
Packit Service |
310c69 |
if ((ref > ip - (MAX_DISTANCE + 1)) && (A32(ref) == A32(ip))) { token = op++; *token=0; goto _next_match; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Prepare next loop
|
|
Packit Service |
310c69 |
anchor = ip++;
|
|
Packit Service |
310c69 |
forwardH = LZ4_HASH_VALUE(ip);
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
_last_literals:
|
|
Packit Service |
310c69 |
// Encode Last Literals
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
int lastRun = (int)(iend - anchor);
|
|
Packit Service |
310c69 |
if (((char*)op - dest) + lastRun + 1 + ((lastRun+255-RUN_MASK)/255) > (U32)maxOutputSize) return 0;
|
|
Packit Service |
310c69 |
if (lastRun>=(int)RUN_MASK) { *op++=(RUN_MASK<<ML_BITS); lastRun-=RUN_MASK; for(; lastRun > 254 ; lastRun-=255) *op++ = 255; *op++ = (BYTE) lastRun; }
|
|
Packit Service |
310c69 |
else *op++ = (lastRun<
|
|
Packit Service |
310c69 |
memcpy(op, anchor, iend - anchor);
|
|
Packit Service |
310c69 |
op += iend-anchor;
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// End
|
|
Packit Service |
310c69 |
return (int) (((char*)op)-dest);
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Note : this function is valid only if isize < LZ4_64KLIMIT
|
|
Packit Service |
310c69 |
#define LZ4_64KLIMIT ((1<<16) + (MFLIMIT-1))
|
|
Packit Service |
310c69 |
#define HASHLOG64K (HASH_LOG+1)
|
|
Packit Service |
310c69 |
#define HASH64KTABLESIZE (1U<
|
|
Packit Service |
310c69 |
#define LZ4_HASH64K_FUNCTION(i) (((i) * 2654435761U) >> ((MINMATCH*8)-HASHLOG64K))
|
|
Packit Service |
310c69 |
#define LZ4_HASH64K_VALUE(p) LZ4_HASH64K_FUNCTION(A32(p))
|
|
Packit Service |
310c69 |
static inline int LZ4_compress64kCtx(void** ctx,
|
|
Packit Service |
310c69 |
const char* source,
|
|
Packit Service |
310c69 |
char* dest,
|
|
Packit Service |
310c69 |
int isize,
|
|
Packit Service |
310c69 |
int maxOutputSize)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
#if HEAPMODE
|
|
Packit Service |
310c69 |
struct refTables *srt = (struct refTables *) (*ctx);
|
|
Packit Service |
310c69 |
U16* HashTable;
|
|
Packit Service |
310c69 |
#else
|
|
Packit Service |
310c69 |
U16 HashTable[HASH64KTABLESIZE] = {0};
|
|
Packit Service |
310c69 |
#endif
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
const BYTE* ip = (BYTE*) source;
|
|
Packit Service |
310c69 |
const BYTE* anchor = ip;
|
|
Packit Service |
310c69 |
const BYTE* const base = ip;
|
|
Packit Service |
310c69 |
const BYTE* const iend = ip + isize;
|
|
Packit Service |
310c69 |
const BYTE* const mflimit = iend - MFLIMIT;
|
|
Packit Service |
310c69 |
#define matchlimit (iend - LASTLITERALS)
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
BYTE* op = (BYTE*) dest;
|
|
Packit Service |
310c69 |
BYTE* const oend = op + maxOutputSize;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
int len, length;
|
|
Packit Service |
310c69 |
const int skipStrength = SKIPSTRENGTH;
|
|
Packit Service |
310c69 |
U32 forwardH;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Init
|
|
Packit Service |
310c69 |
if (isize
|
|
Packit Service |
310c69 |
#if HEAPMODE
|
|
Packit Service |
310c69 |
HashTable = (U16*)(srt->hashTable);
|
|
Packit Service |
310c69 |
memset((void*)HashTable, 0, sizeof(srt->hashTable));
|
|
Packit Service |
310c69 |
#else
|
|
Packit Service |
310c69 |
(void) ctx;
|
|
Packit Service |
310c69 |
#endif
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// First Byte
|
|
Packit Service |
310c69 |
ip++; forwardH = LZ4_HASH64K_VALUE(ip);
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Main Loop
|
|
Packit Service |
310c69 |
for ( ; ; )
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
int findMatchAttempts = (1U << skipStrength) + 3;
|
|
Packit Service |
310c69 |
const BYTE* forwardIp = ip;
|
|
Packit Service |
310c69 |
const BYTE* ref;
|
|
Packit Service |
310c69 |
BYTE* token;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Find a match
|
|
Packit Service |
310c69 |
do {
|
|
Packit Service |
310c69 |
U32 h = forwardH;
|
|
Packit Service |
310c69 |
int step = findMatchAttempts++ >> skipStrength;
|
|
Packit Service |
310c69 |
ip = forwardIp;
|
|
Packit Service |
310c69 |
forwardIp = ip + step;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
if (forwardIp > mflimit) { goto _last_literals; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
forwardH = LZ4_HASH64K_VALUE(forwardIp);
|
|
Packit Service |
310c69 |
ref = base + HashTable[h];
|
|
Packit Service |
310c69 |
HashTable[h] = (U16)(ip - base);
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
} while (A32(ref) != A32(ip));
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Catch up
|
|
Packit Service |
310c69 |
while ((ip>anchor) && (ref>(BYTE*)source) && (ip[-1]==ref[-1])) { ip--; ref--; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Encode Literal length
|
|
Packit Service |
310c69 |
length = (int)(ip - anchor);
|
|
Packit Service |
310c69 |
token = op++;
|
|
Packit Service |
310c69 |
if (unlikely(op + length + (2 + 1 + LASTLITERALS) + (length>>8) > oend)) return 0; // Check output limit
|
|
Packit Service |
310c69 |
#ifdef _MSC_VER
|
|
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310c69 |
if (length>=(int)RUN_MASK)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
int len = length-RUN_MASK;
|
|
Packit Service |
310c69 |
*token=(RUN_MASK<
|
|
Packit Service |
310c69 |
if (len>254)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
do { *op++ = 255; len -= 255; } while (len>254);
|
|
Packit Service |
310c69 |
*op++ = (BYTE)len;
|
|
Packit Service |
310c69 |
memcpy(op, anchor, length);
|
|
Packit Service |
310c69 |
op += length;
|
|
Packit Service |
310c69 |
goto _next_match;
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
else
|
|
Packit Service |
310c69 |
*op++ = (BYTE)len;
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
else *token = (length<
|
|
Packit Service |
310c69 |
#else
|
|
Packit Service |
310c69 |
if (length>=(int)RUN_MASK) { *token=(RUN_MASK<<ML_BITS); len = length-RUN_MASK; for(; len > 254 ; len-=255) *op++ = 255; *op++ = (BYTE)len; }
|
|
Packit Service |
310c69 |
else *token = (length<
|
|
Packit Service |
310c69 |
#endif
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Copy Literals
|
|
Packit Service |
310c69 |
LZ4_BLINDCOPY(anchor, op, length);
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
_next_match:
|
|
Packit Service |
310c69 |
// Encode Offset
|
|
Packit Service |
310c69 |
LZ4_WRITE_LITTLEENDIAN_16(op,(U16)(ip-ref));
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Start Counting
|
|
Packit Service |
310c69 |
ip+=MINMATCH; ref+=MINMATCH; // MinMatch verified
|
|
Packit Service |
310c69 |
anchor = ip;
|
|
Packit Service |
310c69 |
while (ip
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
UARCH diff = AARCH(ref) ^ AARCH(ip);
|
|
Packit Service |
310c69 |
if (!diff) { ip+=STEPSIZE; ref+=STEPSIZE; continue; }
|
|
Packit Service |
310c69 |
ip += LZ4_NbCommonBytes(diff);
|
|
Packit Service |
310c69 |
goto _endCount;
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
if (LZ4_ARCH64) if ((ip<(matchlimit-3)) && (A32(ref) == A32(ip))) { ip+=4; ref+=4; }
|
|
Packit Service |
310c69 |
if ((ip<(matchlimit-1)) && (A16(ref) == A16(ip))) { ip+=2; ref+=2; }
|
|
Packit Service |
310c69 |
if ((ip
|
|
Packit Service |
310c69 |
_endCount:
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Encode MatchLength
|
|
Packit Service |
310c69 |
len = (int)(ip - anchor);
|
|
Packit Service |
310c69 |
if (unlikely(op + (1 + LASTLITERALS) + (len>>8) > oend)) return 0; // Check output limit
|
|
Packit Service |
310c69 |
if (len>=(int)ML_MASK) { *token+=ML_MASK; len-=ML_MASK; for(; len > 509 ; len-=510) { *op++ = 255; *op++ = 255; } if (len > 254) { len-=255; *op++ = 255; } *op++ = (BYTE)len; }
|
|
Packit Service |
310c69 |
else *token += len;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Test end of chunk
|
|
Packit Service |
310c69 |
if (ip > mflimit) { anchor = ip; break; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Fill table
|
|
Packit Service |
310c69 |
HashTable[LZ4_HASH64K_VALUE(ip-2)] = (U16)(ip - 2 - base);
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Test next position
|
|
Packit Service |
310c69 |
ref = base + HashTable[LZ4_HASH64K_VALUE(ip)];
|
|
Packit Service |
310c69 |
HashTable[LZ4_HASH64K_VALUE(ip)] = (U16)(ip - base);
|
|
Packit Service |
310c69 |
if (A32(ref) == A32(ip)) { token = op++; *token=0; goto _next_match; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Prepare next loop
|
|
Packit Service |
310c69 |
anchor = ip++;
|
|
Packit Service |
310c69 |
forwardH = LZ4_HASH64K_VALUE(ip);
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
_last_literals:
|
|
Packit Service |
310c69 |
// Encode Last Literals
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
int lastRun = (int)(iend - anchor);
|
|
Packit Service |
310c69 |
if (op + lastRun + 1 + (lastRun-RUN_MASK+255)/255 > oend) return 0;
|
|
Packit Service |
310c69 |
if (lastRun>=(int)RUN_MASK) { *op++=(RUN_MASK<<ML_BITS); lastRun-=RUN_MASK; for(; lastRun > 254 ; lastRun-=255) *op++ = 255; *op++ = (BYTE) lastRun; }
|
|
Packit Service |
310c69 |
else *op++ = (lastRun<
|
|
Packit Service |
310c69 |
memcpy(op, anchor, iend - anchor);
|
|
Packit Service |
310c69 |
op += iend-anchor;
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// End
|
|
Packit Service |
310c69 |
return (int) (((char*)op)-dest);
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
int LZ4_compress_ctx_limitedOutput(void *ctx,
|
|
Packit Service |
310c69 |
const char *source,
|
|
Packit Service |
310c69 |
char *dest,
|
|
Packit Service |
310c69 |
int isize,
|
|
Packit Service |
310c69 |
int maxOutputSize)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
if (isize < LZ4_64KLIMIT) {
|
|
Packit Service |
310c69 |
return LZ4_compress64kCtx(&ctx, source, dest, isize, maxOutputSize);
|
|
Packit Service |
310c69 |
} else {
|
|
Packit Service |
310c69 |
return LZ4_compressCtx(&ctx, source, dest, isize, maxOutputSize);
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
//****************************
|
|
Packit Service |
310c69 |
// Decompression functions
|
|
Packit Service |
310c69 |
//****************************
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Note : The decoding functions LZ4_uncompress() and LZ4_uncompress_unknownOutputSize()
|
|
Packit Service |
310c69 |
// are safe against "buffer overflow" attack type.
|
|
Packit Service |
310c69 |
// They will never write nor read outside of the provided output buffers.
|
|
Packit Service |
310c69 |
// LZ4_uncompress_unknownOutputSize() also insures that it will never read outside of the input buffer.
|
|
Packit Service |
310c69 |
// A corrupted input will produce an error result, a negative int, indicating the position of the error within input stream.
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
#ifdef LZ4_EVERYTHING
|
|
Packit Service |
310c69 |
int LZ4_uncompress(const char* source, char* dest, int osize)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
// Local Variables
|
|
Packit Service |
310c69 |
const BYTE* restrict ip = (const BYTE*) source;
|
|
Packit Service |
310c69 |
const BYTE* ref;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
BYTE* op = (BYTE*) dest;
|
|
Packit Service |
310c69 |
BYTE* const oend = op + osize;
|
|
Packit Service |
310c69 |
BYTE* cpy;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
unsigned token;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
size_t length;
|
|
Packit Service |
310c69 |
size_t dec32table[] = {0, 3, 2, 3, 0, 0, 0, 0};
|
|
Packit Service |
310c69 |
#if LZ4_ARCH64
|
|
Packit Service |
310c69 |
size_t dec64table[] = {0, 0, 0, -1, 0, 1, 2, 3};
|
|
Packit Service |
310c69 |
#endif
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Main Loop
|
|
Packit Service |
310c69 |
while (1)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
// get runlength
|
|
Packit Service |
310c69 |
token = *ip++;
|
|
Packit Service |
310c69 |
if ((length=(token>>ML_BITS)) == RUN_MASK) { size_t len; for (;(len=*ip++)==255;length+=255){} length += len; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// copy literals
|
|
Packit Service |
310c69 |
cpy = op+length;
|
|
Packit Service |
310c69 |
if (unlikely(cpy>oend-COPYLENGTH))
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
if (cpy != oend) goto _output_error; // Error : not enough place for another match (min 4) + 5 literals
|
|
Packit Service |
310c69 |
memcpy(op, ip, length);
|
|
Packit Service |
310c69 |
ip += length;
|
|
Packit Service |
310c69 |
break; // EOF
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
LZ4_WILDCOPY(ip, op, cpy); ip -= (op-cpy); op = cpy;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// get offset
|
|
Packit Service |
310c69 |
LZ4_READ_LITTLEENDIAN_16(ref,cpy,ip); ip+=2;
|
|
Packit Service |
310c69 |
if (unlikely(ref < (BYTE* const)dest)) goto _output_error; // Error : offset create reference outside destination buffer
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// get matchlength
|
|
Packit Service |
310c69 |
if ((length=(token&ML_MASK)) == ML_MASK) { for (;*ip==255;length+=255) {ip++;} length += *ip++; }
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// copy repeated sequence
|
|
Packit Service |
310c69 |
if (unlikely((op-ref)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
#if LZ4_ARCH64
|
|
Packit Service |
310c69 |
size_t dec64 = dec64table[op-ref];
|
|
Packit Service |
310c69 |
#else
|
|
Packit Service |
310c69 |
const int dec64 = 0;
|
|
Packit Service |
310c69 |
#endif
|
|
Packit Service |
310c69 |
op[0] = ref[0];
|
|
Packit Service |
310c69 |
op[1] = ref[1];
|
|
Packit Service |
310c69 |
op[2] = ref[2];
|
|
Packit Service |
310c69 |
op[3] = ref[3];
|
|
Packit Service |
310c69 |
op += 4, ref += 4; ref -= dec32table[op-ref];
|
|
Packit Service |
310c69 |
A32(op) = A32(ref);
|
|
Packit Service |
310c69 |
op += STEPSIZE-4; ref -= dec64;
|
|
Packit Service |
310c69 |
} else { LZ4_COPYSTEP(ref,op); }
|
|
Packit Service |
310c69 |
cpy = op + length - (STEPSIZE-4);
|
|
Packit Service |
310c69 |
if (cpy>oend-COPYLENGTH)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
if (cpy > oend) goto _output_error; // Error : request to write beyond destination buffer
|
|
Packit Service |
310c69 |
LZ4_SECURECOPY(ref, op, (oend-COPYLENGTH));
|
|
Packit Service |
310c69 |
while(op
|
|
Packit Service |
310c69 |
op=cpy;
|
|
Packit Service |
310c69 |
if (op == oend) goto _output_error; // Check EOF (should never happen, since last 5 bytes are supposed to be literals)
|
|
Packit Service |
310c69 |
continue;
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
LZ4_SECURECOPY(ref, op, cpy);
|
|
Packit Service |
310c69 |
op=cpy; // correction
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// end of decoding
|
|
Packit Service |
310c69 |
return (int) (((char*)ip)-source);
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// write overflow error detected
|
|
Packit Service |
310c69 |
_output_error:
|
|
Packit Service |
310c69 |
return (int) (-(((char*)ip)-source));
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
#endif /* LZ4_EVERYTHING */
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
int LZ4_uncompress_unknownOutputSize(
|
|
Packit Service |
310c69 |
const char* source,
|
|
Packit Service |
310c69 |
char* dest,
|
|
Packit Service |
310c69 |
int isize,
|
|
Packit Service |
310c69 |
int maxOutputSize)
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
// Local Variables
|
|
Packit Service |
310c69 |
const BYTE* restrict ip = (const BYTE*) source;
|
|
Packit Service |
310c69 |
const BYTE* const iend = ip + isize;
|
|
Packit Service |
310c69 |
const BYTE* ref;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
BYTE* op = (BYTE*) dest;
|
|
Packit Service |
310c69 |
BYTE* const oend = op + maxOutputSize;
|
|
Packit Service |
310c69 |
BYTE* cpy;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
size_t dec32table[] = {0, 3, 2, 3, 0, 0, 0, 0};
|
|
Packit Service |
310c69 |
#if LZ4_ARCH64
|
|
Packit Service |
310c69 |
size_t dec64table[] = {0, 0, 0, -1, 0, 1, 2, 3};
|
|
Packit Service |
310c69 |
#endif
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// Main Loop
|
|
Packit Service |
310c69 |
while (ip
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
unsigned token;
|
|
Packit Service |
310c69 |
size_t length;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// get runlength
|
|
Packit Service |
310c69 |
token = *ip++;
|
|
Packit Service |
310c69 |
if ((length=(token>>ML_BITS)) == RUN_MASK) { int s=255; while ((ip
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// copy literals
|
|
Packit Service |
310c69 |
cpy = op+length;
|
|
Packit Service |
310c69 |
if ((cpy>oend-COPYLENGTH) || (ip+length>iend-COPYLENGTH))
|
|
Packit Service |
310c69 |
{
|
|
Packit Service |
310c69 |
if (cpy > oend) goto _output_error; // Error : writes beyond output buffer
|
|
Packit Service |
310c69 |
if (ip+length != iend) goto _output_error; // Error : LZ4 format requires to consume all input at this stage
|
|
Packit Service |
310c69 |
memcpy(op, ip, length);
|
|
Packit Service |
310c69 |
op += length;
|
|
Packit Service |
310c69 |
break; // Necessarily EOF, due to parsing restrictions
|
|
Packit Service |
310c69 |
}
|
|
Packit Service |
310c69 |
LZ4_WILDCOPY(ip, op, cpy); ip -= (op-cpy); op = cpy;
|
|
Packit Service |
310c69 |
|
|
Packit Service |
310c69 |
// get offset
|
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Packit Service |
310c69 |
LZ4_READ_LITTLEENDIAN_16(ref,cpy,ip); ip+=2;
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Packit Service |
310c69 |
if (ref < (BYTE* const)dest) goto _output_error; // Error : offset creates reference outside of destination buffer
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Packit Service |
310c69 |
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Packit Service |
310c69 |
// get matchlength
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Packit Service |
310c69 |
if ((length=(token&ML_MASK)) == ML_MASK) { while (ip
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310c69 |
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Packit Service |
310c69 |
// copy repeated sequence
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Packit Service |
310c69 |
if (unlikely(op-ref
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Packit Service |
310c69 |
{
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Packit Service |
310c69 |
#if LZ4_ARCH64
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Packit Service |
310c69 |
size_t dec64 = dec64table[op-ref];
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Packit Service |
310c69 |
#else
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310c69 |
const int dec64 = 0;
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310c69 |
#endif
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Packit Service |
310c69 |
op[0] = ref[0];
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Packit Service |
310c69 |
op[1] = ref[1];
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Packit Service |
310c69 |
op[2] = ref[2];
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Packit Service |
310c69 |
op[3] = ref[3];
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Packit Service |
310c69 |
op += 4, ref += 4; ref -= dec32table[op-ref];
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Packit Service |
310c69 |
A32(op) = A32(ref);
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Packit Service |
310c69 |
op += STEPSIZE-4; ref -= dec64;
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Packit Service |
310c69 |
} else { LZ4_COPYSTEP(ref,op); }
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Packit Service |
310c69 |
cpy = op + length - (STEPSIZE-4);
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Packit Service |
310c69 |
if (cpy>oend-COPYLENGTH)
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Packit Service |
310c69 |
{
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Packit Service |
310c69 |
if (cpy > oend) goto _output_error; // Error : request to write outside of destination buffer
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Packit Service |
310c69 |
LZ4_SECURECOPY(ref, op, (oend-COPYLENGTH));
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Packit Service |
310c69 |
while(op
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Packit Service |
310c69 |
op=cpy;
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Packit Service |
310c69 |
if (op == oend) goto _output_error; // Check EOF (should never happen, since last 5 bytes are supposed to be literals)
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Packit Service |
310c69 |
continue;
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Packit Service |
310c69 |
}
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Packit Service |
310c69 |
LZ4_SECURECOPY(ref, op, cpy);
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Packit Service |
310c69 |
op=cpy; // correction
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Packit Service |
310c69 |
}
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Packit Service |
310c69 |
|
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Packit Service |
310c69 |
// end of decoding
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Packit Service |
310c69 |
return (int) (((char*)op)-dest);
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Packit Service |
310c69 |
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Packit Service |
310c69 |
// write overflow error detected
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Packit Service |
310c69 |
_output_error:
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Packit Service |
310c69 |
return (int) (-(((char*)ip)-source));
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|
Packit Service |
310c69 |
}
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Packit Service |
310c69 |
|
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Packit Service |
310c69 |
int LZ4_context_size(void)
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|
Packit Service |
310c69 |
{
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|
Packit Service |
310c69 |
return sizeof(struct refTables);
|
|
Packit Service |
310c69 |
}
|