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 have minimum alignment of 4, and be at least as large as HUF_WORKSPACE_SIZE */
90 #define HUF_WORKSPACE_SIZE ((6 << 10) + 256)
91 #define HUF_WORKSPACE_SIZE_U32 (HUF_WORKSPACE_SIZE / sizeof(U32))
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_ABSOLUTEMAX_TABLELOG */
117 #define HUF_TABLELOG_DEFAULT  11      /* default tableLog value when none specified */
118 #define HUF_SYMBOLVALUE_MAX  255
119 
120 #define HUF_TABLELOG_ABSOLUTEMAX  15  /* 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 struct HUF_CElt_s {
137   U16  val;
138   BYTE nbBits;
139 };   /* typedef'd to HUF_CElt */
140 typedef struct HUF_CElt_s HUF_CElt;   /* consider it an incomplete type */
141 #define HUF_CTABLE_SIZE_U32(maxSymbolValue)   ((maxSymbolValue)+1)   /* Use tables of U32, for proper alignment */
142 #define HUF_CTABLE_SIZE(maxSymbolValue)       (HUF_CTABLE_SIZE_U32(maxSymbolValue) * sizeof(U32))
143 #define HUF_CREATE_STATIC_CTABLE(name, maxSymbolValue) \
144     HUF_CElt name[HUF_CTABLE_SIZE_U32(maxSymbolValue)] /* no final ; */
145 
146 /* static allocation of HUF's DTable */
147 typedef U32 HUF_DTable;
148 #define HUF_DTABLE_SIZE(maxTableLog)   (1 + (1<<(maxTableLog)))
149 #define HUF_CREATE_STATIC_DTABLEX1(DTable, maxTableLog) \
150         HUF_DTable DTable[HUF_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1) * 0x01000001) }
151 #define HUF_CREATE_STATIC_DTABLEX2(DTable, maxTableLog) \
152         HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog) * 0x01000001) }
153 
154 
155 /* ****************************************
156 *  Advanced decompression functions
157 ******************************************/
158 size_t HUF_decompress4X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< single-symbol decoder */
159 #ifndef HUF_FORCE_DECOMPRESS_X1
160 size_t HUF_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< double-symbols decoder */
161 #endif
162 
163 size_t HUF_decompress4X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< decodes RLE and uncompressed */
164 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 */
165 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 */
166 size_t HUF_decompress4X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< single-symbol decoder */
167 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 */
168 #ifndef HUF_FORCE_DECOMPRESS_X1
169 size_t HUF_decompress4X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< double-symbols decoder */
170 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 */
171 #endif
172 
173 
174 /* ****************************************
175  *  HUF detailed API
176  * ****************************************/
177 
178 /*! HUF_compress() does the following:
179  *  1. count symbol occurrence from source[] into table count[] using FSE_count() (exposed within "fse.h")
180  *  2. (optional) refine tableLog using HUF_optimalTableLog()
181  *  3. build Huffman table from count using HUF_buildCTable()
182  *  4. save Huffman table to memory buffer using HUF_writeCTable()
183  *  5. encode the data stream using HUF_compress4X_usingCTable()
184  *
185  *  The following API allows targeting specific sub-functions for advanced tasks.
186  *  For example, it's possible to compress several blocks using the same 'CTable',
187  *  or to save and regenerate 'CTable' using external methods.
188  */
189 unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue);
190 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 */
191 size_t HUF_writeCTable (void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog);
192 size_t HUF_writeCTable_wksp(void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog, void* workspace, size_t workspaceSize);
193 size_t HUF_compress4X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable);
194 size_t HUF_estimateCompressedSize(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue);
195 int HUF_validateCTable(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue);
196 
197 typedef enum {
198    HUF_repeat_none,  /*< Cannot use the previous table */
199    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 */
200    HUF_repeat_valid  /*< Can use the previous table and it is assumed to be valid */
201  } HUF_repeat;
202 /* HUF_compress4X_repeat() :
203  *  Same as HUF_compress4X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none.
204  *  If it uses hufTable it does not modify hufTable or repeat.
205  *  If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used.
206  *  If preferRepeat then the old table will always be used if valid. */
207 size_t HUF_compress4X_repeat(void* dst, size_t dstSize,
208                        const void* src, size_t srcSize,
209                        unsigned maxSymbolValue, unsigned tableLog,
210                        void* workSpace, size_t wkspSize,    /*< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */
211                        HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2);
212 
213 /* HUF_buildCTable_wksp() :
214  *  Same as HUF_buildCTable(), but using externally allocated scratch buffer.
215  * `workSpace` must be aligned on 4-bytes boundaries, and its size must be >= HUF_CTABLE_WORKSPACE_SIZE.
216  */
217 #define HUF_CTABLE_WORKSPACE_SIZE_U32 (2*HUF_SYMBOLVALUE_MAX +1 +1)
218 #define HUF_CTABLE_WORKSPACE_SIZE (HUF_CTABLE_WORKSPACE_SIZE_U32 * sizeof(unsigned))
219 size_t HUF_buildCTable_wksp (HUF_CElt* tree,
220                        const unsigned* count, U32 maxSymbolValue, U32 maxNbBits,
221                              void* workSpace, size_t wkspSize);
222 
223 /*! HUF_readStats() :
224  *  Read compact Huffman tree, saved by HUF_writeCTable().
225  * `huffWeight` is destination buffer.
226  * @return : size read from `src` , or an error Code .
227  *  Note : Needed by HUF_readCTable() and HUF_readDTableXn() . */
228 size_t HUF_readStats(BYTE* huffWeight, size_t hwSize,
229                      U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr,
230                      const void* src, size_t srcSize);
231 
232 /*! HUF_readStats_wksp() :
233  * Same as HUF_readStats() but takes an external workspace which must be
234  * 4-byte aligned and its size must be >= HUF_READ_STATS_WORKSPACE_SIZE.
235  * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0.
236  */
237 #define HUF_READ_STATS_WORKSPACE_SIZE_U32 FSE_DECOMPRESS_WKSP_SIZE_U32(6, HUF_TABLELOG_MAX-1)
238 #define HUF_READ_STATS_WORKSPACE_SIZE (HUF_READ_STATS_WORKSPACE_SIZE_U32 * sizeof(unsigned))
239 size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize,
240                           U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr,
241                           const void* src, size_t srcSize,
242                           void* workspace, size_t wkspSize,
243                           int bmi2);
244 
245 /* HUF_readCTable() :
246  *  Loading a CTable saved with HUF_writeCTable() */
247 size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void* src, size_t srcSize, unsigned *hasZeroWeights);
248 
249 /* HUF_getNbBits() :
250  *  Read nbBits from CTable symbolTable, for symbol `symbolValue` presumed <= HUF_SYMBOLVALUE_MAX
251  *  Note 1 : is not inlined, as HUF_CElt definition is private
252  *  Note 2 : const void* used, so that it can provide a statically allocated table as argument (which uses type U32) */
253 U32 HUF_getNbBits(const void* symbolTable, U32 symbolValue);
254 
255 /*
256  * HUF_decompress() does the following:
257  * 1. select the decompression algorithm (X1, X2) based on pre-computed heuristics
258  * 2. build Huffman table from save, using HUF_readDTableX?()
259  * 3. decode 1 or 4 segments in parallel using HUF_decompress?X?_usingDTable()
260  */
261 
262 /* HUF_selectDecoder() :
263  *  Tells which decoder is likely to decode faster,
264  *  based on a set of pre-computed metrics.
265  * @return : 0==HUF_decompress4X1, 1==HUF_decompress4X2 .
266  *  Assumption : 0 < dstSize <= 128 KB */
267 U32 HUF_selectDecoder (size_t dstSize, size_t cSrcSize);
268 
269 /*
270  *  The minimum workspace size for the `workSpace` used in
271  *  HUF_readDTableX1_wksp() and HUF_readDTableX2_wksp().
272  *
273  *  The space used depends on HUF_TABLELOG_MAX, ranging from ~1500 bytes when
274  *  HUF_TABLE_LOG_MAX=12 to ~1850 bytes when HUF_TABLE_LOG_MAX=15.
275  *  Buffer overflow errors may potentially occur if code modifications result in
276  *  a required workspace size greater than that specified in the following
277  *  macro.
278  */
279 #define HUF_DECOMPRESS_WORKSPACE_SIZE ((2 << 10) + (1 << 9))
280 #define HUF_DECOMPRESS_WORKSPACE_SIZE_U32 (HUF_DECOMPRESS_WORKSPACE_SIZE / sizeof(U32))
281 
282 #ifndef HUF_FORCE_DECOMPRESS_X2
283 size_t HUF_readDTableX1 (HUF_DTable* DTable, const void* src, size_t srcSize);
284 size_t HUF_readDTableX1_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize);
285 #endif
286 #ifndef HUF_FORCE_DECOMPRESS_X1
287 size_t HUF_readDTableX2 (HUF_DTable* DTable, const void* src, size_t srcSize);
288 size_t HUF_readDTableX2_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize);
289 #endif
290 
291 size_t HUF_decompress4X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable);
292 #ifndef HUF_FORCE_DECOMPRESS_X2
293 size_t HUF_decompress4X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable);
294 #endif
295 #ifndef HUF_FORCE_DECOMPRESS_X1
296 size_t HUF_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable);
297 #endif
298 
299 
300 /* ====================== */
301 /* single stream variants */
302 /* ====================== */
303 
304 size_t HUF_compress1X (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog);
305 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_U32 unsigned */
306 size_t HUF_compress1X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable);
307 /* HUF_compress1X_repeat() :
308  *  Same as HUF_compress1X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none.
309  *  If it uses hufTable it does not modify hufTable or repeat.
310  *  If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used.
311  *  If preferRepeat then the old table will always be used if valid. */
312 size_t HUF_compress1X_repeat(void* dst, size_t dstSize,
313                        const void* src, size_t srcSize,
314                        unsigned maxSymbolValue, unsigned tableLog,
315                        void* workSpace, size_t wkspSize,   /*< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */
316                        HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2);
317 
318 size_t HUF_decompress1X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* single-symbol decoder */
319 #ifndef HUF_FORCE_DECOMPRESS_X1
320 size_t HUF_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /* double-symbol decoder */
321 #endif
322 
323 size_t HUF_decompress1X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);
324 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);
325 #ifndef HUF_FORCE_DECOMPRESS_X2
326 size_t HUF_decompress1X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< single-symbol decoder */
327 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 */
328 #endif
329 #ifndef HUF_FORCE_DECOMPRESS_X1
330 size_t HUF_decompress1X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize);   /*< double-symbols decoder */
331 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 */
332 #endif
333 
334 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 */
335 #ifndef HUF_FORCE_DECOMPRESS_X2
336 size_t HUF_decompress1X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable);
337 #endif
338 #ifndef HUF_FORCE_DECOMPRESS_X1
339 size_t HUF_decompress1X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable);
340 #endif
341 
342 /* BMI2 variants.
343  * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0.
344  */
345 size_t HUF_decompress1X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2);
346 #ifndef HUF_FORCE_DECOMPRESS_X2
347 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);
348 #endif
349 size_t HUF_decompress4X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2);
350 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);
351 #ifndef HUF_FORCE_DECOMPRESS_X2
352 size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2);
353 #endif
354 
355 #endif /* HUF_STATIC_LINKING_ONLY */
356 
357