Update dependencies
This commit is contained in:
184
vendor/github.com/DataDog/zstd/fse.h
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184
vendor/github.com/DataDog/zstd/fse.h
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@@ -1,41 +1,17 @@
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#ifndef USE_EXTERNAL_ZSTD
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/* ******************************************************************
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FSE : Finite State Entropy codec
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Public Prototypes declaration
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Copyright (C) 2013-2016, 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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- Source repository : https://github.com/Cyan4973/FiniteStateEntropy
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* FSE : Finite State Entropy codec
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* Public Prototypes declaration
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* You can contact the author at :
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* - Source repository : https://github.com/Cyan4973/FiniteStateEntropy
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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****************************************************************** */
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#if defined (__cplusplus)
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extern "C" {
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#endif
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#ifndef FSE_H
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#define FSE_H
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@@ -43,8 +19,7 @@ extern "C" {
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/*-*****************************************
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* Dependencies
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******************************************/
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#include <stddef.h> /* size_t, ptrdiff_t */
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#include "zstd_deps.h" /* size_t, ptrdiff_t */
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/*-*****************************************
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* FSE_PUBLIC_API : control library symbols visibility
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@@ -73,34 +48,6 @@ extern "C" {
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FSE_PUBLIC_API unsigned FSE_versionNumber(void); /**< library version number; to be used when checking dll version */
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/*-****************************************
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* FSE simple functions
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******************************************/
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/*! FSE_compress() :
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Compress content of buffer 'src', of size 'srcSize', into destination buffer 'dst'.
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'dst' buffer must be already allocated. Compression runs faster is dstCapacity >= FSE_compressBound(srcSize).
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@return : size of compressed data (<= dstCapacity).
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Special values : if return == 0, srcData is not compressible => Nothing is stored within dst !!!
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if return == 1, srcData is a single byte symbol * srcSize times. Use RLE compression instead.
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if FSE_isError(return), compression failed (more details using FSE_getErrorName())
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*/
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FSE_PUBLIC_API size_t FSE_compress(void* dst, size_t dstCapacity,
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const void* src, size_t srcSize);
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/*! FSE_decompress():
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Decompress FSE data from buffer 'cSrc', of size 'cSrcSize',
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into already allocated destination buffer 'dst', of size 'dstCapacity'.
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@return : size of regenerated data (<= maxDstSize),
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or an error code, which can be tested using FSE_isError() .
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** Important ** : FSE_decompress() does not decompress non-compressible nor RLE data !!!
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Why ? : making this distinction requires a header.
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Header management is intentionally delegated to the user layer, which can better manage special cases.
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*/
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FSE_PUBLIC_API size_t FSE_decompress(void* dst, size_t dstCapacity,
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const void* cSrc, size_t cSrcSize);
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/*-*****************************************
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* Tool functions
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******************************************/
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@@ -111,20 +58,6 @@ FSE_PUBLIC_API unsigned FSE_isError(size_t code); /* tells if a return
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FSE_PUBLIC_API const char* FSE_getErrorName(size_t code); /* provides error code string (useful for debugging) */
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/*-*****************************************
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* FSE advanced functions
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******************************************/
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/*! FSE_compress2() :
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Same as FSE_compress(), but allows the selection of 'maxSymbolValue' and 'tableLog'
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Both parameters can be defined as '0' to mean : use default value
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@return : size of compressed data
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Special values : if return == 0, srcData is not compressible => Nothing is stored within cSrc !!!
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if return == 1, srcData is a single byte symbol * srcSize times. Use RLE compression.
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if FSE_isError(return), it's an error code.
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*/
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FSE_PUBLIC_API size_t FSE_compress2 (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog);
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/*-*****************************************
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* FSE detailed API
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******************************************/
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@@ -157,10 +90,16 @@ FSE_PUBLIC_API unsigned FSE_optimalTableLog(unsigned maxTableLog, size_t srcSize
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/*! FSE_normalizeCount():
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normalize counts so that sum(count[]) == Power_of_2 (2^tableLog)
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'normalizedCounter' is a table of short, of minimum size (maxSymbolValue+1).
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useLowProbCount is a boolean parameter which trades off compressed size for
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faster header decoding. When it is set to 1, the compressed data will be slightly
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smaller. And when it is set to 0, FSE_readNCount() and FSE_buildDTable() will be
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faster. If you are compressing a small amount of data (< 2 KB) then useLowProbCount=0
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is a good default, since header deserialization makes a big speed difference.
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Otherwise, useLowProbCount=1 is a good default, since the speed difference is small.
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@return : tableLog,
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or an errorCode, which can be tested using FSE_isError() */
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FSE_PUBLIC_API size_t FSE_normalizeCount(short* normalizedCounter, unsigned tableLog,
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const unsigned* count, size_t srcSize, unsigned maxSymbolValue);
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const unsigned* count, size_t srcSize, unsigned maxSymbolValue, unsigned useLowProbCount);
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/*! FSE_NCountWriteBound():
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Provides the maximum possible size of an FSE normalized table, given 'maxSymbolValue' and 'tableLog'.
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@@ -178,8 +117,6 @@ FSE_PUBLIC_API size_t FSE_writeNCount (void* buffer, size_t bufferSize,
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/*! Constructor and Destructor of FSE_CTable.
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Note that FSE_CTable size depends on 'tableLog' and 'maxSymbolValue' */
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typedef unsigned FSE_CTable; /* don't allocate that. It's only meant to be more restrictive than void* */
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FSE_PUBLIC_API FSE_CTable* FSE_createCTable (unsigned maxSymbolValue, unsigned tableLog);
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FSE_PUBLIC_API void FSE_freeCTable (FSE_CTable* ct);
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/*! FSE_buildCTable():
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Builds `ct`, which must be already allocated, using FSE_createCTable().
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@@ -248,23 +185,14 @@ FSE_PUBLIC_API size_t FSE_readNCount (short* normalizedCounter,
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unsigned* maxSymbolValuePtr, unsigned* tableLogPtr,
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const void* rBuffer, size_t rBuffSize);
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/*! Constructor and Destructor of FSE_DTable.
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Note that its size depends on 'tableLog' */
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/*! FSE_readNCount_bmi2():
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* Same as FSE_readNCount() but pass bmi2=1 when your CPU supports BMI2 and 0 otherwise.
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*/
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FSE_PUBLIC_API size_t FSE_readNCount_bmi2(short* normalizedCounter,
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unsigned* maxSymbolValuePtr, unsigned* tableLogPtr,
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const void* rBuffer, size_t rBuffSize, int bmi2);
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typedef unsigned FSE_DTable; /* don't allocate that. It's just a way to be more restrictive than void* */
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FSE_PUBLIC_API FSE_DTable* FSE_createDTable(unsigned tableLog);
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FSE_PUBLIC_API void FSE_freeDTable(FSE_DTable* dt);
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/*! FSE_buildDTable():
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Builds 'dt', which must be already allocated, using FSE_createDTable().
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return : 0, or an errorCode, which can be tested using FSE_isError() */
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FSE_PUBLIC_API size_t FSE_buildDTable (FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog);
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/*! FSE_decompress_usingDTable():
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Decompress compressed source `cSrc` of size `cSrcSize` using `dt`
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into `dst` which must be already allocated.
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@return : size of regenerated data (necessarily <= `dstCapacity`),
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or an errorCode, which can be tested using FSE_isError() */
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FSE_PUBLIC_API size_t FSE_decompress_usingDTable(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, const FSE_DTable* dt);
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/*!
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Tutorial :
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@@ -296,24 +224,22 @@ If there is an error, the function will return an error code, which can be teste
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#endif /* FSE_H */
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#if defined(FSE_STATIC_LINKING_ONLY) && !defined(FSE_H_FSE_STATIC_LINKING_ONLY)
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#define FSE_H_FSE_STATIC_LINKING_ONLY
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/* *** Dependency *** */
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#include "bitstream.h"
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/* *****************************************
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* Static allocation
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*******************************************/
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/* FSE buffer bounds */
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#define FSE_NCOUNTBOUND 512
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#define FSE_BLOCKBOUND(size) (size + (size>>7) + 4 /* fse states */ + sizeof(size_t) /* bitContainer */)
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#define FSE_BLOCKBOUND(size) ((size) + ((size)>>7) + 4 /* fse states */ + sizeof(size_t) /* bitContainer */)
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#define FSE_COMPRESSBOUND(size) (FSE_NCOUNTBOUND + FSE_BLOCKBOUND(size)) /* Macro version, useful for static allocation */
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/* It is possible to statically allocate FSE CTable/DTable as a table of FSE_CTable/FSE_DTable using below macros */
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#define FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) (1 + (1<<(maxTableLog-1)) + ((maxSymbolValue+1)*2))
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#define FSE_DTABLE_SIZE_U32(maxTableLog) (1 + (1<<maxTableLog))
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#define FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) (1 + (1<<((maxTableLog)-1)) + (((maxSymbolValue)+1)*2))
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#define FSE_DTABLE_SIZE_U32(maxTableLog) (1 + (1<<(maxTableLog)))
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/* or use the size to malloc() space directly. Pay attention to alignment restrictions though */
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#define FSE_CTABLE_SIZE(maxTableLog, maxSymbolValue) (FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) * sizeof(FSE_CTable))
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@@ -327,33 +253,28 @@ If there is an error, the function will return an error code, which can be teste
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unsigned FSE_optimalTableLog_internal(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue, unsigned minus);
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/**< same as FSE_optimalTableLog(), which used `minus==2` */
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/* FSE_compress_wksp() :
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* Same as FSE_compress2(), but using an externally allocated scratch buffer (`workSpace`).
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* FSE_WKSP_SIZE_U32() provides the minimum size required for `workSpace` as a table of FSE_CTable.
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*/
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#define FSE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) ( FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) + ((maxTableLog > 12) ? (1 << (maxTableLog - 2)) : 1024) )
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size_t FSE_compress_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize);
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size_t FSE_buildCTable_raw (FSE_CTable* ct, unsigned nbBits);
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/**< build a fake FSE_CTable, designed for a flat distribution, where each symbol uses nbBits */
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size_t FSE_buildCTable_rle (FSE_CTable* ct, unsigned char symbolValue);
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/**< build a fake FSE_CTable, designed to compress always the same symbolValue */
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/* FSE_buildCTable_wksp() :
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* Same as FSE_buildCTable(), but using an externally allocated scratch buffer (`workSpace`).
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* `wkspSize` must be >= `(1<<tableLog)`.
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* `wkspSize` must be >= `FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog)` of `unsigned`.
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* See FSE_buildCTable_wksp() for breakdown of workspace usage.
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*/
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#define FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog) (((maxSymbolValue + 2) + (1ull << (tableLog)))/2 + sizeof(U64)/sizeof(U32) /* additional 8 bytes for potential table overwrite */)
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#define FSE_BUILD_CTABLE_WORKSPACE_SIZE(maxSymbolValue, tableLog) (sizeof(unsigned) * FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog))
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size_t FSE_buildCTable_wksp(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize);
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size_t FSE_buildDTable_raw (FSE_DTable* dt, unsigned nbBits);
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/**< build a fake FSE_DTable, designed to read a flat distribution where each symbol uses nbBits */
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#define FSE_BUILD_DTABLE_WKSP_SIZE(maxTableLog, maxSymbolValue) (sizeof(short) * (maxSymbolValue + 1) + (1ULL << maxTableLog) + 8)
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#define FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) ((FSE_BUILD_DTABLE_WKSP_SIZE(maxTableLog, maxSymbolValue) + sizeof(unsigned) - 1) / sizeof(unsigned))
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FSE_PUBLIC_API size_t FSE_buildDTable_wksp(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize);
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/**< Same as FSE_buildDTable(), using an externally allocated `workspace` produced with `FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxSymbolValue)` */
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size_t FSE_buildDTable_rle (FSE_DTable* dt, unsigned char symbolValue);
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/**< build a fake FSE_DTable, designed to always generate the same symbolValue */
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size_t FSE_decompress_wksp(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, FSE_DTable* workSpace, unsigned maxLog);
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/**< same as FSE_decompress(), using an externally allocated `workSpace` produced with `FSE_DTABLE_SIZE_U32(maxLog)` */
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#define FSE_DECOMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) (FSE_DTABLE_SIZE_U32(maxTableLog) + 1 + FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) + (FSE_MAX_SYMBOL_VALUE + 1) / 2 + 1)
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#define FSE_DECOMPRESS_WKSP_SIZE(maxTableLog, maxSymbolValue) (FSE_DECOMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) * sizeof(unsigned))
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size_t FSE_decompress_wksp_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize, int bmi2);
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/**< same as FSE_decompress(), using an externally allocated `workSpace` produced with `FSE_DECOMPRESS_WKSP_SIZE_U32(maxLog, maxSymbolValue)`.
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* Set bmi2 to 1 if your CPU supports BMI2 or 0 if it doesn't */
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typedef enum {
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FSE_repeat_none, /**< Cannot use the previous table */
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@@ -536,20 +457,20 @@ MEM_STATIC void FSE_encodeSymbol(BIT_CStream_t* bitC, FSE_CState_t* statePtr, un
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FSE_symbolCompressionTransform const symbolTT = ((const FSE_symbolCompressionTransform*)(statePtr->symbolTT))[symbol];
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const U16* const stateTable = (const U16*)(statePtr->stateTable);
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U32 const nbBitsOut = (U32)((statePtr->value + symbolTT.deltaNbBits) >> 16);
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BIT_addBits(bitC, statePtr->value, nbBitsOut);
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BIT_addBits(bitC, (BitContainerType)statePtr->value, nbBitsOut);
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statePtr->value = stateTable[ (statePtr->value >> nbBitsOut) + symbolTT.deltaFindState];
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}
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MEM_STATIC void FSE_flushCState(BIT_CStream_t* bitC, const FSE_CState_t* statePtr)
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{
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BIT_addBits(bitC, statePtr->value, statePtr->stateLog);
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BIT_addBits(bitC, (BitContainerType)statePtr->value, statePtr->stateLog);
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BIT_flushBits(bitC);
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}
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/* FSE_getMaxNbBits() :
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* Approximate maximum cost of a symbol, in bits.
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* Fractional get rounded up (i.e : a symbol with a normalized frequency of 3 gives the same result as a frequency of 2)
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* Fractional get rounded up (i.e. a symbol with a normalized frequency of 3 gives the same result as a frequency of 2)
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* note 1 : assume symbolValue is valid (<= maxSymbolValue)
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* note 2 : if freq[symbolValue]==0, @return a fake cost of tableLog+1 bits */
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MEM_STATIC U32 FSE_getMaxNbBits(const void* symbolTTPtr, U32 symbolValue)
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@@ -664,6 +585,9 @@ MEM_STATIC unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr)
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#ifndef FSE_DEFAULT_MEMORY_USAGE
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# define FSE_DEFAULT_MEMORY_USAGE 13
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#endif
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#if (FSE_DEFAULT_MEMORY_USAGE > FSE_MAX_MEMORY_USAGE)
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# error "FSE_DEFAULT_MEMORY_USAGE must be <= FSE_MAX_MEMORY_USAGE"
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#endif
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/*!FSE_MAX_SYMBOL_VALUE :
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* Maximum symbol value authorized.
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@@ -697,12 +621,8 @@ MEM_STATIC unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr)
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# error "FSE_MAX_TABLELOG > FSE_TABLELOG_ABSOLUTE_MAX is not supported"
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#endif
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#define FSE_TABLESTEP(tableSize) ((tableSize>>1) + (tableSize>>3) + 3)
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#define FSE_TABLESTEP(tableSize) (((tableSize)>>1) + ((tableSize)>>3) + 3)
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#endif /* FSE_STATIC_LINKING_ONLY */
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#if defined (__cplusplus)
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}
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#endif
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#endif /* USE_EXTERNAL_ZSTD */
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