ReactOS  0.4.15-dev-5459-gb85f005
zstd_compress_sequences.c
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1 /*
2  * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
3  * All rights reserved.
4  *
5  * This source code is licensed under both the BSD-style license (found in the
6  * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7  * in the COPYING file in the root directory of this source tree).
8  * You may select, at your option, one of the above-listed licenses.
9  */
10 
11  /*-*************************************
12  * Dependencies
13  ***************************************/
15 
21 static unsigned const kInverseProbabilityLog256[256] = {
22  0, 2048, 1792, 1642, 1536, 1453, 1386, 1329, 1280, 1236, 1197, 1162,
23  1130, 1100, 1073, 1047, 1024, 1001, 980, 960, 941, 923, 906, 889,
24  874, 859, 844, 830, 817, 804, 791, 779, 768, 756, 745, 734,
25  724, 714, 704, 694, 685, 676, 667, 658, 650, 642, 633, 626,
26  618, 610, 603, 595, 588, 581, 574, 567, 561, 554, 548, 542,
27  535, 529, 523, 517, 512, 506, 500, 495, 489, 484, 478, 473,
28  468, 463, 458, 453, 448, 443, 438, 434, 429, 424, 420, 415,
29  411, 407, 402, 398, 394, 390, 386, 382, 377, 373, 370, 366,
30  362, 358, 354, 350, 347, 343, 339, 336, 332, 329, 325, 322,
31  318, 315, 311, 308, 305, 302, 298, 295, 292, 289, 286, 282,
32  279, 276, 273, 270, 267, 264, 261, 258, 256, 253, 250, 247,
33  244, 241, 239, 236, 233, 230, 228, 225, 222, 220, 217, 215,
34  212, 209, 207, 204, 202, 199, 197, 194, 192, 190, 187, 185,
35  182, 180, 178, 175, 173, 171, 168, 166, 164, 162, 159, 157,
36  155, 153, 151, 149, 146, 144, 142, 140, 138, 136, 134, 132,
37  130, 128, 126, 123, 121, 119, 117, 115, 114, 112, 110, 108,
38  106, 104, 102, 100, 98, 96, 94, 93, 91, 89, 87, 85,
39  83, 82, 80, 78, 76, 74, 73, 71, 69, 67, 66, 64,
40  62, 61, 59, 57, 55, 54, 52, 50, 49, 47, 46, 44,
41  42, 41, 39, 37, 36, 34, 33, 31, 30, 28, 26, 25,
42  23, 22, 20, 19, 17, 16, 14, 13, 11, 10, 8, 7,
43  5, 4, 2, 1,
44 };
45 
46 static unsigned ZSTD_getFSEMaxSymbolValue(FSE_CTable const* ctable) {
47  void const* ptr = ctable;
48  U16 const* u16ptr = (U16 const*)ptr;
49  U32 const maxSymbolValue = MEM_read16(u16ptr + 1);
50  return maxSymbolValue;
51 }
52 
57 static size_t ZSTD_NCountCost(unsigned const* count, unsigned const max,
58  size_t const nbSeq, unsigned const FSELog)
59 {
60  BYTE wksp[FSE_NCOUNTBOUND];
61  S16 norm[MaxSeq + 1];
62  const U32 tableLog = FSE_optimalTableLog(FSELog, nbSeq, max);
63  FORWARD_IF_ERROR(FSE_normalizeCount(norm, tableLog, count, nbSeq, max), "");
64  return FSE_writeNCount(wksp, sizeof(wksp), norm, max, tableLog);
65 }
66 
71 static size_t ZSTD_entropyCost(unsigned const* count, unsigned const max, size_t const total)
72 {
73  unsigned cost = 0;
74  unsigned s;
75  for (s = 0; s <= max; ++s) {
76  unsigned norm = (unsigned)((256 * count[s]) / total);
77  if (count[s] != 0 && norm == 0)
78  norm = 1;
79  assert(count[s] < total);
81  }
82  return cost >> 8;
83 }
84 
90  FSE_CTable const* ctable,
91  unsigned const* count,
92  unsigned const max)
93 {
94  unsigned const kAccuracyLog = 8;
95  size_t cost = 0;
96  unsigned s;
97  FSE_CState_t cstate;
98  FSE_initCState(&cstate, ctable);
100  DEBUGLOG(5, "Repeat FSE_CTable has maxSymbolValue %u < %u",
102  return ERROR(GENERIC);
103  }
104  for (s = 0; s <= max; ++s) {
105  unsigned const tableLog = cstate.stateLog;
106  unsigned const badCost = (tableLog + 1) << kAccuracyLog;
107  unsigned const bitCost = FSE_bitCost(cstate.symbolTT, tableLog, s, kAccuracyLog);
108  if (count[s] == 0)
109  continue;
110  if (bitCost >= badCost) {
111  DEBUGLOG(5, "Repeat FSE_CTable has Prob[%u] == 0", s);
112  return ERROR(GENERIC);
113  }
114  cost += (size_t)count[s] * bitCost;
115  }
116  return cost >> kAccuracyLog;
117 }
118 
124 size_t ZSTD_crossEntropyCost(short const* norm, unsigned accuracyLog,
125  unsigned const* count, unsigned const max)
126 {
127  unsigned const shift = 8 - accuracyLog;
128  size_t cost = 0;
129  unsigned s;
130  assert(accuracyLog <= 8);
131  for (s = 0; s <= max; ++s) {
132  unsigned const normAcc = (norm[s] != -1) ? (unsigned)norm[s] : 1;
133  unsigned const norm256 = normAcc << shift;
134  assert(norm256 > 0);
135  assert(norm256 < 256);
136  cost += count[s] * kInverseProbabilityLog256[norm256];
137  }
138  return cost >> 8;
139 }
140 
143  FSE_repeat* repeatMode, unsigned const* count, unsigned const max,
144  size_t const mostFrequent, size_t nbSeq, unsigned const FSELog,
145  FSE_CTable const* prevCTable,
146  short const* defaultNorm, U32 defaultNormLog,
147  ZSTD_defaultPolicy_e const isDefaultAllowed,
148  ZSTD_strategy const strategy)
149 {
151  if (mostFrequent == nbSeq) {
152  *repeatMode = FSE_repeat_none;
153  if (isDefaultAllowed && nbSeq <= 2) {
154  /* Prefer set_basic over set_rle when there are 2 or less symbols,
155  * since RLE uses 1 byte, but set_basic uses 5-6 bits per symbol.
156  * If basic encoding isn't possible, always choose RLE.
157  */
158  DEBUGLOG(5, "Selected set_basic");
159  return set_basic;
160  }
161  DEBUGLOG(5, "Selected set_rle");
162  return set_rle;
163  }
164  if (strategy < ZSTD_lazy) {
165  if (isDefaultAllowed) {
166  size_t const staticFse_nbSeq_max = 1000;
167  size_t const mult = 10 - strategy;
168  size_t const baseLog = 3;
169  size_t const dynamicFse_nbSeq_min = (((size_t)1 << defaultNormLog) * mult) >> baseLog; /* 28-36 for offset, 56-72 for lengths */
170  assert(defaultNormLog >= 5 && defaultNormLog <= 6); /* xx_DEFAULTNORMLOG */
171  assert(mult <= 9 && mult >= 7);
172  if ( (*repeatMode == FSE_repeat_valid)
173  && (nbSeq < staticFse_nbSeq_max) ) {
174  DEBUGLOG(5, "Selected set_repeat");
175  return set_repeat;
176  }
177  if ( (nbSeq < dynamicFse_nbSeq_min)
178  || (mostFrequent < (nbSeq >> (defaultNormLog-1))) ) {
179  DEBUGLOG(5, "Selected set_basic");
180  /* The format allows default tables to be repeated, but it isn't useful.
181  * When using simple heuristics to select encoding type, we don't want
182  * to confuse these tables with dictionaries. When running more careful
183  * analysis, we don't need to waste time checking both repeating tables
184  * and default tables.
185  */
186  *repeatMode = FSE_repeat_none;
187  return set_basic;
188  }
189  }
190  } else {
191  size_t const basicCost = isDefaultAllowed ? ZSTD_crossEntropyCost(defaultNorm, defaultNormLog, count, max) : ERROR(GENERIC);
192  size_t const repeatCost = *repeatMode != FSE_repeat_none ? ZSTD_fseBitCost(prevCTable, count, max) : ERROR(GENERIC);
193  size_t const NCountCost = ZSTD_NCountCost(count, max, nbSeq, FSELog);
194  size_t const compressedCost = (NCountCost << 3) + ZSTD_entropyCost(count, max, nbSeq);
195 
196  if (isDefaultAllowed) {
197  assert(!ZSTD_isError(basicCost));
198  assert(!(*repeatMode == FSE_repeat_valid && ZSTD_isError(repeatCost)));
199  }
200  assert(!ZSTD_isError(NCountCost));
201  assert(compressedCost < ERROR(maxCode));
202  DEBUGLOG(5, "Estimated bit costs: basic=%u\trepeat=%u\tcompressed=%u",
203  (unsigned)basicCost, (unsigned)repeatCost, (unsigned)compressedCost);
204  if (basicCost <= repeatCost && basicCost <= compressedCost) {
205  DEBUGLOG(5, "Selected set_basic");
206  assert(isDefaultAllowed);
207  *repeatMode = FSE_repeat_none;
208  return set_basic;
209  }
210  if (repeatCost <= compressedCost) {
211  DEBUGLOG(5, "Selected set_repeat");
212  assert(!ZSTD_isError(repeatCost));
213  return set_repeat;
214  }
215  assert(compressedCost < basicCost && compressedCost < repeatCost);
216  }
217  DEBUGLOG(5, "Selected set_compressed");
218  *repeatMode = FSE_repeat_check;
219  return set_compressed;
220 }
221 
222 size_t
223 ZSTD_buildCTable(void* dst, size_t dstCapacity,
224  FSE_CTable* nextCTable, U32 FSELog, symbolEncodingType_e type,
225  unsigned* count, U32 max,
226  const BYTE* codeTable, size_t nbSeq,
227  const S16* defaultNorm, U32 defaultNormLog, U32 defaultMax,
228  const FSE_CTable* prevCTable, size_t prevCTableSize,
229  void* entropyWorkspace, size_t entropyWorkspaceSize)
230 {
231  BYTE* op = (BYTE*)dst;
232  const BYTE* const oend = op + dstCapacity;
233  DEBUGLOG(6, "ZSTD_buildCTable (dstCapacity=%u)", (unsigned)dstCapacity);
234 
235  switch (type) {
236  case set_rle:
237  FORWARD_IF_ERROR(FSE_buildCTable_rle(nextCTable, (BYTE)max), "");
238  RETURN_ERROR_IF(dstCapacity==0, dstSize_tooSmall, "not enough space");
239  *op = codeTable[0];
240  return 1;
241  case set_repeat:
242  memcpy(nextCTable, prevCTable, prevCTableSize);
243  return 0;
244  case set_basic:
245  FORWARD_IF_ERROR(FSE_buildCTable_wksp(nextCTable, defaultNorm, defaultMax, defaultNormLog, entropyWorkspace, entropyWorkspaceSize), ""); /* note : could be pre-calculated */
246  return 0;
247  case set_compressed: {
248  S16 norm[MaxSeq + 1];
249  size_t nbSeq_1 = nbSeq;
250  const U32 tableLog = FSE_optimalTableLog(FSELog, nbSeq, max);
251  if (count[codeTable[nbSeq-1]] > 1) {
252  count[codeTable[nbSeq-1]]--;
253  nbSeq_1--;
254  }
255  assert(nbSeq_1 > 1);
256  FORWARD_IF_ERROR(FSE_normalizeCount(norm, tableLog, count, nbSeq_1, max), "");
257  { size_t const NCountSize = FSE_writeNCount(op, oend - op, norm, max, tableLog); /* overflow protected */
258  FORWARD_IF_ERROR(NCountSize, "FSE_writeNCount failed");
259  FORWARD_IF_ERROR(FSE_buildCTable_wksp(nextCTable, norm, max, tableLog, entropyWorkspace, entropyWorkspaceSize), "");
260  return NCountSize;
261  }
262  }
263  default: assert(0); RETURN_ERROR(GENERIC, "impossible to reach");
264  }
265 }
266 
269  void* dst, size_t dstCapacity,
270  FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable,
271  FSE_CTable const* CTable_OffsetBits, BYTE const* ofCodeTable,
272  FSE_CTable const* CTable_LitLength, BYTE const* llCodeTable,
273  seqDef const* sequences, size_t nbSeq, int longOffsets)
274 {
275  BIT_CStream_t blockStream;
276  FSE_CState_t stateMatchLength;
277  FSE_CState_t stateOffsetBits;
278  FSE_CState_t stateLitLength;
279 
281  ERR_isError(BIT_initCStream(&blockStream, dst, dstCapacity)),
282  dstSize_tooSmall, "not enough space remaining");
283  DEBUGLOG(6, "available space for bitstream : %i (dstCapacity=%u)",
284  (int)(blockStream.endPtr - blockStream.startPtr),
285  (unsigned)dstCapacity);
286 
287  /* first symbols */
288  FSE_initCState2(&stateMatchLength, CTable_MatchLength, mlCodeTable[nbSeq-1]);
289  FSE_initCState2(&stateOffsetBits, CTable_OffsetBits, ofCodeTable[nbSeq-1]);
290  FSE_initCState2(&stateLitLength, CTable_LitLength, llCodeTable[nbSeq-1]);
291  BIT_addBits(&blockStream, sequences[nbSeq-1].litLength, LL_bits[llCodeTable[nbSeq-1]]);
292  if (MEM_32bits()) BIT_flushBits(&blockStream);
293  BIT_addBits(&blockStream, sequences[nbSeq-1].matchLength, ML_bits[mlCodeTable[nbSeq-1]]);
294  if (MEM_32bits()) BIT_flushBits(&blockStream);
295  if (longOffsets) {
296  U32 const ofBits = ofCodeTable[nbSeq-1];
297  unsigned const extraBits = ofBits - MIN(ofBits, STREAM_ACCUMULATOR_MIN-1);
298  if (extraBits) {
299  BIT_addBits(&blockStream, sequences[nbSeq-1].offset, extraBits);
300  BIT_flushBits(&blockStream);
301  }
302  BIT_addBits(&blockStream, sequences[nbSeq-1].offset >> extraBits,
303  ofBits - extraBits);
304  } else {
305  BIT_addBits(&blockStream, sequences[nbSeq-1].offset, ofCodeTable[nbSeq-1]);
306  }
307  BIT_flushBits(&blockStream);
308 
309  { size_t n;
310  for (n=nbSeq-2 ; n<nbSeq ; n--) { /* intentional underflow */
311  BYTE const llCode = llCodeTable[n];
312  BYTE const ofCode = ofCodeTable[n];
313  BYTE const mlCode = mlCodeTable[n];
314  U32 const llBits = LL_bits[llCode];
315  U32 const ofBits = ofCode;
316  U32 const mlBits = ML_bits[mlCode];
317  DEBUGLOG(6, "encoding: litlen:%2u - matchlen:%2u - offCode:%7u",
318  (unsigned)sequences[n].litLength,
319  (unsigned)sequences[n].matchLength + MINMATCH,
320  (unsigned)sequences[n].offset);
321  /* 32b*/ /* 64b*/
322  /* (7)*/ /* (7)*/
323  FSE_encodeSymbol(&blockStream, &stateOffsetBits, ofCode); /* 15 */ /* 15 */
324  FSE_encodeSymbol(&blockStream, &stateMatchLength, mlCode); /* 24 */ /* 24 */
325  if (MEM_32bits()) BIT_flushBits(&blockStream); /* (7)*/
326  FSE_encodeSymbol(&blockStream, &stateLitLength, llCode); /* 16 */ /* 33 */
327  if (MEM_32bits() || (ofBits+mlBits+llBits >= 64-7-(LLFSELog+MLFSELog+OffFSELog)))
328  BIT_flushBits(&blockStream); /* (7)*/
329  BIT_addBits(&blockStream, sequences[n].litLength, llBits);
330  if (MEM_32bits() && ((llBits+mlBits)>24)) BIT_flushBits(&blockStream);
331  BIT_addBits(&blockStream, sequences[n].matchLength, mlBits);
332  if (MEM_32bits() || (ofBits+mlBits+llBits > 56)) BIT_flushBits(&blockStream);
333  if (longOffsets) {
334  unsigned const extraBits = ofBits - MIN(ofBits, STREAM_ACCUMULATOR_MIN-1);
335  if (extraBits) {
336  BIT_addBits(&blockStream, sequences[n].offset, extraBits);
337  BIT_flushBits(&blockStream); /* (7)*/
338  }
339  BIT_addBits(&blockStream, sequences[n].offset >> extraBits,
340  ofBits - extraBits); /* 31 */
341  } else {
342  BIT_addBits(&blockStream, sequences[n].offset, ofBits); /* 31 */
343  }
344  BIT_flushBits(&blockStream); /* (7)*/
345  DEBUGLOG(7, "remaining space : %i", (int)(blockStream.endPtr - blockStream.ptr));
346  } }
347 
348  DEBUGLOG(6, "ZSTD_encodeSequences: flushing ML state with %u bits", stateMatchLength.stateLog);
349  FSE_flushCState(&blockStream, &stateMatchLength);
350  DEBUGLOG(6, "ZSTD_encodeSequences: flushing Off state with %u bits", stateOffsetBits.stateLog);
351  FSE_flushCState(&blockStream, &stateOffsetBits);
352  DEBUGLOG(6, "ZSTD_encodeSequences: flushing LL state with %u bits", stateLitLength.stateLog);
353  FSE_flushCState(&blockStream, &stateLitLength);
354 
355  { size_t const streamSize = BIT_closeCStream(&blockStream);
356  RETURN_ERROR_IF(streamSize==0, dstSize_tooSmall, "not enough space");
357  return streamSize;
358  }
359 }
360 
361 static size_t
363  void* dst, size_t dstCapacity,
364  FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable,
365  FSE_CTable const* CTable_OffsetBits, BYTE const* ofCodeTable,
366  FSE_CTable const* CTable_LitLength, BYTE const* llCodeTable,
367  seqDef const* sequences, size_t nbSeq, int longOffsets)
368 {
369  return ZSTD_encodeSequences_body(dst, dstCapacity,
370  CTable_MatchLength, mlCodeTable,
371  CTable_OffsetBits, ofCodeTable,
372  CTable_LitLength, llCodeTable,
373  sequences, nbSeq, longOffsets);
374 }
375 
376 
377 #if DYNAMIC_BMI2
378 
379 static TARGET_ATTRIBUTE("bmi2") size_t
380 ZSTD_encodeSequences_bmi2(
381  void* dst, size_t dstCapacity,
382  FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable,
383  FSE_CTable const* CTable_OffsetBits, BYTE const* ofCodeTable,
384  FSE_CTable const* CTable_LitLength, BYTE const* llCodeTable,
385  seqDef const* sequences, size_t nbSeq, int longOffsets)
386 {
387  return ZSTD_encodeSequences_body(dst, dstCapacity,
388  CTable_MatchLength, mlCodeTable,
389  CTable_OffsetBits, ofCodeTable,
390  CTable_LitLength, llCodeTable,
391  sequences, nbSeq, longOffsets);
392 }
393 
394 #endif
395 
397  void* dst, size_t dstCapacity,
398  FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable,
399  FSE_CTable const* CTable_OffsetBits, BYTE const* ofCodeTable,
400  FSE_CTable const* CTable_LitLength, BYTE const* llCodeTable,
401  seqDef const* sequences, size_t nbSeq, int longOffsets, int bmi2)
402 {
403  DEBUGLOG(5, "ZSTD_encodeSequences: dstCapacity = %u", (unsigned)dstCapacity);
404 #if DYNAMIC_BMI2
405  if (bmi2) {
406  return ZSTD_encodeSequences_bmi2(dst, dstCapacity,
407  CTable_MatchLength, mlCodeTable,
408  CTable_OffsetBits, ofCodeTable,
409  CTable_LitLength, llCodeTable,
410  sequences, nbSeq, longOffsets);
411  }
412 #endif
413  (void)bmi2;
414  return ZSTD_encodeSequences_default(dst, dstCapacity,
415  CTable_MatchLength, mlCodeTable,
416  CTable_OffsetBits, ofCodeTable,
417  CTable_LitLength, llCodeTable,
418  sequences, nbSeq, longOffsets);
419 }
Definition: vj.h:105
FSE_PUBLIC_API unsigned FSE_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue)
Definition: fse_compress.c:342
size_t FSE_buildCTable_wksp(FSE_CTable *ct, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void *workSpace, size_t wkspSize)
Definition: fse_compress.c:69
symbolEncodingType_e
FSE_PUBLIC_API size_t FSE_normalizeCount(short *normalizedCounter, unsigned tableLog, const unsigned *count, size_t srcSize, unsigned maxSymbolValue)
Definition: fse_compress.c:438
#define max(a, b)
Definition: svc.c:63
#define shift
Definition: input.c:1756
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
#define MaxSeq
size_t ZSTD_buildCTable(void *dst, size_t dstCapacity, FSE_CTable *nextCTable, U32 FSELog, symbolEncodingType_e type, unsigned *count, U32 max, const BYTE *codeTable, size_t nbSeq, const S16 *defaultNorm, U32 defaultNormLog, U32 defaultMax, const FSE_CTable *prevCTable, size_t prevCTableSize, void *entropyWorkspace, size_t entropyWorkspaceSize)
_Tp _STLP_CALL norm(const complex< _Tp > &__z)
Definition: _complex.h:741
#define TARGET_ATTRIBUTE(target)
Definition: compiler.h:89
#define ERROR(name)
Definition: error_private.h:53
GLuint GLuint GLsizei count
Definition: gl.h:1545
static const U32 LL_bits[MaxLL+1]
GLdouble n
Definition: glext.h:7729
#define assert(x)
Definition: debug.h:53
MEM_STATIC unsigned MEM_32bits(void)
Definition: mem.h:183
unsigned FSE_CTable
Definition: fse.h:160
MEM_STATIC size_t BIT_initCStream(BIT_CStream_t *bitC, void *dstBuffer, size_t dstCapacity)
Definition: bitstream.h:183
size_t ZSTD_fseBitCost(FSE_CTable const *ctable, unsigned const *count, unsigned const max)
T MIN(T a, T b)
Definition: polytest.cpp:79
#define ZSTD_STATIC_ASSERT(c)
Definition: zstd_internal.h:45
#define DEBUGLOG(l,...)
Definition: debug.h:106
#define ZSTD_isError
Definition: zstd_internal.h:46
size_t ZSTD_crossEntropyCost(short const *norm, unsigned accuracyLog, unsigned const *count, unsigned const max)
#define RETURN_ERROR(StatusCode)
Definition: Base.h:751
static PVOID ptr
Definition: dispmode.c:27
ERR_STATIC unsigned ERR_isError(size_t code)
Definition: error_private.h:56
static _Locale_mask_t ctable[256]
ZSTD_defaultPolicy_e
#define MLFSELog
__kernel_size_t size_t
Definition: linux.h:237
size_t FSE_buildCTable_rle(FSE_CTable *ct, BYTE symbolValue)
Definition: fse_compress.c:534
#define RETURN_ERROR_IF(cond, err,...)
Definition: zstd_internal.h:91
MEM_STATIC void BIT_flushBits(BIT_CStream_t *bitC)
Definition: bitstream.h:239
GLintptr offset
Definition: glext.h:5920
#define OffFSELog
UINT op
Definition: effect.c:236
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
GLdouble s
Definition: gl.h:2039
unsigned char BYTE
Definition: xxhash.c:193
static size_t ZSTD_NCountCost(unsigned const *count, unsigned const max, size_t const nbSeq, unsigned const FSELog)
static struct msg_sequence * sequences[NUM_MSG_SEQUENCES]
Definition: button.c:54
#define STREAM_ACCUMULATOR_MIN
Definition: bitstream.h:47
unsigned short U16
Definition: xxhash.c:194
MEM_STATIC void BIT_addBits(BIT_CStream_t *bitC, size_t value, unsigned nbBits)
Definition: bitstream.h:198
static unsigned ZSTD_getFSEMaxSymbolValue(FSE_CTable const *ctable)
symbolEncodingType_e ZSTD_selectEncodingType(FSE_repeat *repeatMode, unsigned const *count, unsigned const max, size_t const mostFrequent, size_t nbSeq, unsigned const FSELog, FSE_CTable const *prevCTable, short const *defaultNorm, U32 defaultNormLog, ZSTD_defaultPolicy_e const isDefaultAllowed, ZSTD_strategy const strategy)
GLenum GLenum dst
Definition: glext.h:6340
static const U32 ML_bits[MaxML+1]
FORCE_INLINE_TEMPLATE size_t ZSTD_encodeSequences_body(void *dst, size_t dstCapacity, FSE_CTable const *CTable_MatchLength, BYTE const *mlCodeTable, FSE_CTable const *CTable_OffsetBits, BYTE const *ofCodeTable, FSE_CTable const *CTable_LitLength, BYTE const *llCodeTable, seqDef const *sequences, size_t nbSeq, int longOffsets)
char * ptr
Definition: bitstream.h:61
char * endPtr
Definition: bitstream.h:62
#define FORWARD_IF_ERROR(err,...)
size_t total
FSE_PUBLIC_API size_t FSE_writeNCount(void *buffer, size_t bufferSize, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog)
Definition: fse_compress.c:291
static unsigned const kInverseProbabilityLog256[256]
#define MINMATCH
static size_t ZSTD_entropyCost(unsigned const *count, unsigned const max, size_t const total)
signed short S16
Definition: mem.h:146
char * startPtr
Definition: bitstream.h:60
#define const
Definition: zconf.h:230
#define LLFSELog
static size_t ZSTD_encodeSequences_default(void *dst, size_t dstCapacity, FSE_CTable const *CTable_MatchLength, BYTE const *mlCodeTable, FSE_CTable const *CTable_OffsetBits, BYTE const *ofCodeTable, FSE_CTable const *CTable_LitLength, BYTE const *llCodeTable, seqDef const *sequences, size_t nbSeq, int longOffsets)
GLuint GLuint GLsizei GLenum type
Definition: gl.h:1545
MEM_STATIC U16 MEM_read16(const void *memPtr)
Definition: mem.h:237
ZSTD_strategy
Definition: zstd.h:251
MEM_STATIC size_t BIT_closeCStream(BIT_CStream_t *bitC)
Definition: bitstream.h:254
unsigned int U32
Definition: xxhash.c:195
size_t ZSTD_encodeSequences(void *dst, size_t dstCapacity, FSE_CTable const *CTable_MatchLength, BYTE const *mlCodeTable, FSE_CTable const *CTable_OffsetBits, BYTE const *ofCodeTable, FSE_CTable const *CTable_LitLength, BYTE const *llCodeTable, seqDef const *sequences, size_t nbSeq, int longOffsets, int bmi2)
static unsigned(__cdecl *hash_bstr)(bstr_t s)
#define FORCE_INLINE_TEMPLATE
Definition: xxhash.c:172