1 /* ****************************************************************** 2 * huff0 huffman codec, 3 * part of Finite State Entropy library 4 * Copyright (c) Yann Collet, Facebook, Inc. 5 * 6 * You can contact the author at : 7 * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy 8 * 9 * This source code is licensed under both the BSD-style license (found in the 10 * LICENSE file in the root directory of this source tree) and the GPLv2 (found 11 * in the COPYING file in the root directory of this source tree). 12 * You may select, at your option, one of the above-listed licenses. 13 ****************************************************************** */ 14 15 16 #ifndef HUF_H_298734234 17 #define HUF_H_298734234 18 19 /* *** Dependencies *** */ 20 #include "zstd_deps.h" /* size_t */ 21 22 23 /* *** library symbols visibility *** */ 24 /* Note : when linking with -fvisibility=hidden on gcc, or by default on Visual, 25 * HUF symbols remain "private" (internal symbols for library only). 26 * Set macro FSE_DLL_EXPORT to 1 if you want HUF symbols visible on DLL interface */ 27 #if defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) && defined(__GNUC__) && (__GNUC__ >= 4) 28 # define HUF_PUBLIC_API __attribute__ ((visibility ("default"))) 29 #elif defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) /* Visual expected */ 30 # define HUF_PUBLIC_API __declspec(dllexport) 31 #elif defined(FSE_DLL_IMPORT) && (FSE_DLL_IMPORT==1) 32 # define HUF_PUBLIC_API __declspec(dllimport) /* not required, just to generate faster code (saves a function pointer load from IAT and an indirect jump) */ 33 #else 34 # define HUF_PUBLIC_API 35 #endif 36 37 38 /* ========================== */ 39 /* *** simple functions *** */ 40 /* ========================== */ 41 42 /* HUF_compress() : 43 * Compress content from buffer 'src', of size 'srcSize', into buffer 'dst'. 44 * 'dst' buffer must be already allocated. 45 * Compression runs faster if `dstCapacity` >= HUF_compressBound(srcSize). 46 * `srcSize` must be <= `HUF_BLOCKSIZE_MAX` == 128 KB. 47 * @return : size of compressed data (<= `dstCapacity`). 48 * Special values : if return == 0, srcData is not compressible => Nothing is stored within dst !!! 49 * if HUF_isError(return), compression failed (more details using HUF_getErrorName()) 50 */ 51 HUF_PUBLIC_API size_t HUF_compress(void* dst, size_t dstCapacity, 52 const void* src, size_t srcSize); 53 54 /* HUF_decompress() : 55 * Decompress HUF data from buffer 'cSrc', of size 'cSrcSize', 56 * into already allocated buffer 'dst', of minimum size 'dstSize'. 57 * `originalSize` : **must** be the ***exact*** size of original (uncompressed) data. 58 * Note : in contrast with FSE, HUF_decompress can regenerate 59 * RLE (cSrcSize==1) and uncompressed (cSrcSize==dstSize) data, 60 * because it knows size to regenerate (originalSize). 61 * @return : size of regenerated data (== originalSize), 62 * or an error code, which can be tested using HUF_isError() 63 */ 64 HUF_PUBLIC_API size_t HUF_decompress(void* dst, size_t originalSize, 65 const void* cSrc, size_t cSrcSize); 66 67 68 /* *** Tool functions *** */ 69 #define HUF_BLOCKSIZE_MAX (128 * 1024) /*< maximum input size for a single block compressed with HUF_compress */ 70 HUF_PUBLIC_API size_t HUF_compressBound(size_t size); /*< maximum compressed size (worst case) */ 71 72 /* Error Management */ 73 HUF_PUBLIC_API unsigned HUF_isError(size_t code); /*< tells if a return value is an error code */ 74 HUF_PUBLIC_API const char* HUF_getErrorName(size_t code); /*< provides error code string (useful for debugging) */ 75 76 77 /* *** Advanced function *** */ 78 79 /* HUF_compress2() : 80 * Same as HUF_compress(), but offers control over `maxSymbolValue` and `tableLog`. 81 * `maxSymbolValue` must be <= HUF_SYMBOLVALUE_MAX . 82 * `tableLog` must be `<= HUF_TABLELOG_MAX` . */ 83 HUF_PUBLIC_API size_t HUF_compress2 (void* dst, size_t dstCapacity, 84 const void* src, size_t srcSize, 85 unsigned maxSymbolValue, unsigned tableLog); 86 87 /* HUF_compress4X_wksp() : 88 * Same as HUF_compress2(), but uses externally allocated `workSpace`. 89 * `workspace` must be at least as large as HUF_WORKSPACE_SIZE */ 90 #define HUF_WORKSPACE_SIZE ((8 << 10) + 512 /* sorting scratch space */) 91 #define HUF_WORKSPACE_SIZE_U64 (HUF_WORKSPACE_SIZE / sizeof(U64)) 92 HUF_PUBLIC_API size_t HUF_compress4X_wksp (void* dst, size_t dstCapacity, 93 const void* src, size_t srcSize, 94 unsigned maxSymbolValue, unsigned tableLog, 95 void* workSpace, size_t wkspSize); 96 97 #endif /* HUF_H_298734234 */ 98 99 /* ****************************************************************** 100 * WARNING !! 101 * The following section contains advanced and experimental definitions 102 * which shall never be used in the context of a dynamic library, 103 * because they are not guaranteed to remain stable in the future. 104 * Only consider them in association with static linking. 105 * *****************************************************************/ 106 #if !defined(HUF_H_HUF_STATIC_LINKING_ONLY) 107 #define HUF_H_HUF_STATIC_LINKING_ONLY 108 109 /* *** Dependencies *** */ 110 #include "mem.h" /* U32 */ 111 #define FSE_STATIC_LINKING_ONLY 112 #include "fse.h" 113 114 115 /* *** Constants *** */ 116 #define HUF_TABLELOG_MAX 12 /* max runtime value of tableLog (due to static allocation); can be modified up to HUF_TABLELOG_ABSOLUTEMAX */ 117 #define HUF_TABLELOG_DEFAULT 11 /* default tableLog value when none specified */ 118 #define HUF_SYMBOLVALUE_MAX 255 119 120 #define HUF_TABLELOG_ABSOLUTEMAX 12 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */ 121 #if (HUF_TABLELOG_MAX > HUF_TABLELOG_ABSOLUTEMAX) 122 # error "HUF_TABLELOG_MAX is too large !" 123 #endif 124 125 126 /* **************************************** 127 * Static allocation 128 ******************************************/ 129 /* HUF buffer bounds */ 130 #define HUF_CTABLEBOUND 129 131 #define HUF_BLOCKBOUND(size) (size + (size>>8) + 8) /* only true when incompressible is pre-filtered with fast heuristic */ 132 #define HUF_COMPRESSBOUND(size) (HUF_CTABLEBOUND + HUF_BLOCKBOUND(size)) /* Macro version, useful for static allocation */ 133 134 /* static allocation of HUF's Compression Table */ 135 /* this is a private definition, just exposed for allocation and strict aliasing purpose. never EVER access its members directly */ 136 typedef size_t HUF_CElt; /* consider it an incomplete type */ 137 #define HUF_CTABLE_SIZE_ST(maxSymbolValue) ((maxSymbolValue)+2) /* Use tables of size_t, for proper alignment */ 138 #define HUF_CTABLE_SIZE(maxSymbolValue) (HUF_CTABLE_SIZE_ST(maxSymbolValue) * sizeof(size_t)) 139 #define HUF_CREATE_STATIC_CTABLE(name, maxSymbolValue) \ 140 HUF_CElt name[HUF_CTABLE_SIZE_ST(maxSymbolValue)] /* no final ; */ 141 142 /* static allocation of HUF's DTable */ 143 typedef U32 HUF_DTable; 144 #define HUF_DTABLE_SIZE(maxTableLog) (1 + (1<<(maxTableLog))) 145 #define HUF_CREATE_STATIC_DTABLEX1(DTable, maxTableLog) \ 146 HUF_DTable DTable[HUF_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1) * 0x01000001) } 147 #define HUF_CREATE_STATIC_DTABLEX2(DTable, maxTableLog) \ 148 HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog) * 0x01000001) } 149 150 151 /* **************************************** 152 * Advanced decompression functions 153 ******************************************/ 154 size_t HUF_decompress4X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< single-symbol decoder */ 155 #ifndef HUF_FORCE_DECOMPRESS_X1 156 size_t HUF_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< double-symbols decoder */ 157 #endif 158 159 size_t HUF_decompress4X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< decodes RLE and uncompressed */ 160 size_t HUF_decompress4X_hufOnly(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< considers RLE and uncompressed as errors */ 161 size_t HUF_decompress4X_hufOnly_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< considers RLE and uncompressed as errors */ 162 size_t HUF_decompress4X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< single-symbol decoder */ 163 size_t HUF_decompress4X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< single-symbol decoder */ 164 #ifndef HUF_FORCE_DECOMPRESS_X1 165 size_t HUF_decompress4X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< double-symbols decoder */ 166 size_t HUF_decompress4X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< double-symbols decoder */ 167 #endif 168 169 170 /* **************************************** 171 * HUF detailed API 172 * ****************************************/ 173 174 /*! HUF_compress() does the following: 175 * 1. count symbol occurrence from source[] into table count[] using FSE_count() (exposed within "fse.h") 176 * 2. (optional) refine tableLog using HUF_optimalTableLog() 177 * 3. build Huffman table from count using HUF_buildCTable() 178 * 4. save Huffman table to memory buffer using HUF_writeCTable() 179 * 5. encode the data stream using HUF_compress4X_usingCTable() 180 * 181 * The following API allows targeting specific sub-functions for advanced tasks. 182 * For example, it's possible to compress several blocks using the same 'CTable', 183 * or to save and regenerate 'CTable' using external methods. 184 */ 185 unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue); 186 size_t HUF_buildCTable (HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue, unsigned maxNbBits); /* @return : maxNbBits; CTable and count can overlap. In which case, CTable will overwrite count content */ 187 size_t HUF_writeCTable (void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog); 188 size_t HUF_writeCTable_wksp(void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog, void* workspace, size_t workspaceSize); 189 size_t HUF_compress4X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable); 190 size_t HUF_compress4X_usingCTable_bmi2(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable, int bmi2); 191 size_t HUF_estimateCompressedSize(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue); 192 int HUF_validateCTable(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue); 193 194 typedef enum { 195 HUF_repeat_none, /*< Cannot use the previous table */ 196 HUF_repeat_check, /*< Can use the previous table but it must be checked. Note : The previous table must have been constructed by HUF_compress{1, 4}X_repeat */ 197 HUF_repeat_valid /*< Can use the previous table and it is assumed to be valid */ 198 } HUF_repeat; 199 /* HUF_compress4X_repeat() : 200 * Same as HUF_compress4X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none. 201 * If it uses hufTable it does not modify hufTable or repeat. 202 * If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used. 203 * If preferRepeat then the old table will always be used if valid. 204 * If suspectUncompressible then some sampling checks will be run to potentially skip huffman coding */ 205 size_t HUF_compress4X_repeat(void* dst, size_t dstSize, 206 const void* src, size_t srcSize, 207 unsigned maxSymbolValue, unsigned tableLog, 208 void* workSpace, size_t wkspSize, /*< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */ 209 HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2, unsigned suspectUncompressible); 210 211 /* HUF_buildCTable_wksp() : 212 * Same as HUF_buildCTable(), but using externally allocated scratch buffer. 213 * `workSpace` must be aligned on 4-bytes boundaries, and its size must be >= HUF_CTABLE_WORKSPACE_SIZE. 214 */ 215 #define HUF_CTABLE_WORKSPACE_SIZE_U32 (2*HUF_SYMBOLVALUE_MAX +1 +1) 216 #define HUF_CTABLE_WORKSPACE_SIZE (HUF_CTABLE_WORKSPACE_SIZE_U32 * sizeof(unsigned)) 217 size_t HUF_buildCTable_wksp (HUF_CElt* tree, 218 const unsigned* count, U32 maxSymbolValue, U32 maxNbBits, 219 void* workSpace, size_t wkspSize); 220 221 /*! HUF_readStats() : 222 * Read compact Huffman tree, saved by HUF_writeCTable(). 223 * `huffWeight` is destination buffer. 224 * @return : size read from `src` , or an error Code . 225 * Note : Needed by HUF_readCTable() and HUF_readDTableXn() . */ 226 size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, 227 U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr, 228 const void* src, size_t srcSize); 229 230 /*! HUF_readStats_wksp() : 231 * Same as HUF_readStats() but takes an external workspace which must be 232 * 4-byte aligned and its size must be >= HUF_READ_STATS_WORKSPACE_SIZE. 233 * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0. 234 */ 235 #define HUF_READ_STATS_WORKSPACE_SIZE_U32 FSE_DECOMPRESS_WKSP_SIZE_U32(6, HUF_TABLELOG_MAX-1) 236 #define HUF_READ_STATS_WORKSPACE_SIZE (HUF_READ_STATS_WORKSPACE_SIZE_U32 * sizeof(unsigned)) 237 size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize, 238 U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr, 239 const void* src, size_t srcSize, 240 void* workspace, size_t wkspSize, 241 int bmi2); 242 243 /* HUF_readCTable() : 244 * Loading a CTable saved with HUF_writeCTable() */ 245 size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void* src, size_t srcSize, unsigned *hasZeroWeights); 246 247 /* HUF_getNbBitsFromCTable() : 248 * Read nbBits from CTable symbolTable, for symbol `symbolValue` presumed <= HUF_SYMBOLVALUE_MAX 249 * Note 1 : is not inlined, as HUF_CElt definition is private */ 250 U32 HUF_getNbBitsFromCTable(const HUF_CElt* symbolTable, U32 symbolValue); 251 252 /* 253 * HUF_decompress() does the following: 254 * 1. select the decompression algorithm (X1, X2) based on pre-computed heuristics 255 * 2. build Huffman table from save, using HUF_readDTableX?() 256 * 3. decode 1 or 4 segments in parallel using HUF_decompress?X?_usingDTable() 257 */ 258 259 /* HUF_selectDecoder() : 260 * Tells which decoder is likely to decode faster, 261 * based on a set of pre-computed metrics. 262 * @return : 0==HUF_decompress4X1, 1==HUF_decompress4X2 . 263 * Assumption : 0 < dstSize <= 128 KB */ 264 U32 HUF_selectDecoder (size_t dstSize, size_t cSrcSize); 265 266 /* 267 * The minimum workspace size for the `workSpace` used in 268 * HUF_readDTableX1_wksp() and HUF_readDTableX2_wksp(). 269 * 270 * The space used depends on HUF_TABLELOG_MAX, ranging from ~1500 bytes when 271 * HUF_TABLE_LOG_MAX=12 to ~1850 bytes when HUF_TABLE_LOG_MAX=15. 272 * Buffer overflow errors may potentially occur if code modifications result in 273 * a required workspace size greater than that specified in the following 274 * macro. 275 */ 276 #define HUF_DECOMPRESS_WORKSPACE_SIZE ((2 << 10) + (1 << 9)) 277 #define HUF_DECOMPRESS_WORKSPACE_SIZE_U32 (HUF_DECOMPRESS_WORKSPACE_SIZE / sizeof(U32)) 278 279 #ifndef HUF_FORCE_DECOMPRESS_X2 280 size_t HUF_readDTableX1 (HUF_DTable* DTable, const void* src, size_t srcSize); 281 size_t HUF_readDTableX1_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize); 282 #endif 283 #ifndef HUF_FORCE_DECOMPRESS_X1 284 size_t HUF_readDTableX2 (HUF_DTable* DTable, const void* src, size_t srcSize); 285 size_t HUF_readDTableX2_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize); 286 #endif 287 288 size_t HUF_decompress4X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); 289 #ifndef HUF_FORCE_DECOMPRESS_X2 290 size_t HUF_decompress4X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); 291 #endif 292 #ifndef HUF_FORCE_DECOMPRESS_X1 293 size_t HUF_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); 294 #endif 295 296 297 /* ====================== */ 298 /* single stream variants */ 299 /* ====================== */ 300 301 size_t HUF_compress1X (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog); 302 size_t HUF_compress1X_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); /*< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U64 U64 */ 303 size_t HUF_compress1X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable); 304 size_t HUF_compress1X_usingCTable_bmi2(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable, int bmi2); 305 /* HUF_compress1X_repeat() : 306 * Same as HUF_compress1X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none. 307 * If it uses hufTable it does not modify hufTable or repeat. 308 * If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used. 309 * If preferRepeat then the old table will always be used if valid. 310 * If suspectUncompressible then some sampling checks will be run to potentially skip huffman coding */ 311 size_t HUF_compress1X_repeat(void* dst, size_t dstSize, 312 const void* src, size_t srcSize, 313 unsigned maxSymbolValue, unsigned tableLog, 314 void* workSpace, size_t wkspSize, /*< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */ 315 HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2, unsigned suspectUncompressible); 316 317 size_t HUF_decompress1X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* single-symbol decoder */ 318 #ifndef HUF_FORCE_DECOMPRESS_X1 319 size_t HUF_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* double-symbol decoder */ 320 #endif 321 322 size_t HUF_decompress1X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); 323 size_t HUF_decompress1X_DCtx_wksp (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); 324 #ifndef HUF_FORCE_DECOMPRESS_X2 325 size_t HUF_decompress1X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< single-symbol decoder */ 326 size_t HUF_decompress1X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< single-symbol decoder */ 327 #endif 328 #ifndef HUF_FORCE_DECOMPRESS_X1 329 size_t HUF_decompress1X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< double-symbols decoder */ 330 size_t HUF_decompress1X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< double-symbols decoder */ 331 #endif 332 333 size_t HUF_decompress1X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); /*< automatic selection of sing or double symbol decoder, based on DTable */ 334 #ifndef HUF_FORCE_DECOMPRESS_X2 335 size_t HUF_decompress1X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); 336 #endif 337 #ifndef HUF_FORCE_DECOMPRESS_X1 338 size_t HUF_decompress1X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); 339 #endif 340 341 /* BMI2 variants. 342 * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0. 343 */ 344 size_t HUF_decompress1X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2); 345 #ifndef HUF_FORCE_DECOMPRESS_X2 346 size_t HUF_decompress1X1_DCtx_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2); 347 #endif 348 size_t HUF_decompress4X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2); 349 size_t HUF_decompress4X_hufOnly_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2); 350 #ifndef HUF_FORCE_DECOMPRESS_X2 351 size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2); 352 #endif 353 #ifndef HUF_FORCE_DECOMPRESS_X1 354 size_t HUF_readDTableX2_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2); 355 #endif 356 357 #endif /* HUF_STATIC_LINKING_ONLY */ 358 359