Mercurial > hg
annotate contrib/python-zstandard/zstd/common/zstd_internal.h @ 30822:b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Commit 63c68d6f5fc8de4afd9bde81b13b537beb4e47e8 from
https://github.com/indygreg/python-zstandard is imported without
modifications (other than removing unwanted files).
This includes minor performance and feature improvements. It also
changes the vendored zstd library from 1.1.1 to 1.1.2.
# no-check-commit
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 14 Jan 2017 19:41:43 -0800 |
parents | 2e484bdea8c4 |
children | c32454d69b85 |
rev | line source |
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1 /** |
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2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. |
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3 * All rights reserved. |
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4 * |
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5 * This source code is licensed under the BSD-style license found in the |
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6 * LICENSE file in the root directory of this source tree. An additional grant |
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7 * of patent rights can be found in the PATENTS file in the same directory. |
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8 */ |
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9 |
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10 #ifndef ZSTD_CCOMMON_H_MODULE |
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11 #define ZSTD_CCOMMON_H_MODULE |
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12 |
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13 /*-******************************************************* |
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14 * Compiler specifics |
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15 *********************************************************/ |
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16 #ifdef _MSC_VER /* Visual Studio */ |
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17 # define FORCE_INLINE static __forceinline |
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18 # include <intrin.h> /* For Visual 2005 */ |
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19 # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ |
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20 # pragma warning(disable : 4324) /* disable: C4324: padded structure */ |
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21 # pragma warning(disable : 4100) /* disable: C4100: unreferenced formal parameter */ |
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22 #else |
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23 # if defined (__cplusplus) || defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */ |
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24 # ifdef __GNUC__ |
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25 # define FORCE_INLINE static inline __attribute__((always_inline)) |
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26 # else |
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27 # define FORCE_INLINE static inline |
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28 # endif |
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29 # else |
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30 # define FORCE_INLINE static |
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31 # endif /* __STDC_VERSION__ */ |
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32 #endif |
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33 |
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34 #ifdef _MSC_VER |
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35 # define FORCE_NOINLINE static __declspec(noinline) |
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36 #else |
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37 # ifdef __GNUC__ |
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38 # define FORCE_NOINLINE static __attribute__((__noinline__)) |
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39 # else |
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40 # define FORCE_NOINLINE static |
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41 # endif |
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42 #endif |
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43 |
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44 |
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45 /*-************************************* |
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46 * Dependencies |
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47 ***************************************/ |
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48 #include "mem.h" |
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49 #include "error_private.h" |
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50 #define ZSTD_STATIC_LINKING_ONLY |
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51 #include "zstd.h" |
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52 |
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53 |
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54 /*-************************************* |
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55 * shared macros |
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56 ***************************************/ |
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57 #define MIN(a,b) ((a)<(b) ? (a) : (b)) |
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58 #define MAX(a,b) ((a)>(b) ? (a) : (b)) |
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59 #define CHECK_F(f) { size_t const errcod = f; if (ERR_isError(errcod)) return errcod; } /* check and Forward error code */ |
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60 #define CHECK_E(f, e) { size_t const errcod = f; if (ERR_isError(errcod)) return ERROR(e); } /* check and send Error code */ |
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61 |
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62 |
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63 /*-************************************* |
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64 * Common constants |
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65 ***************************************/ |
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66 #define ZSTD_OPT_NUM (1<<12) |
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67 #define ZSTD_DICT_MAGIC 0xEC30A437 /* v0.7+ */ |
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68 |
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69 #define ZSTD_REP_NUM 3 /* number of repcodes */ |
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70 #define ZSTD_REP_CHECK (ZSTD_REP_NUM) /* number of repcodes to check by the optimal parser */ |
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71 #define ZSTD_REP_MOVE (ZSTD_REP_NUM-1) |
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72 #define ZSTD_REP_MOVE_OPT (ZSTD_REP_NUM) |
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73 static const U32 repStartValue[ZSTD_REP_NUM] = { 1, 4, 8 }; |
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74 |
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75 #define KB *(1 <<10) |
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76 #define MB *(1 <<20) |
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77 #define GB *(1U<<30) |
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78 |
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79 #define BIT7 128 |
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80 #define BIT6 64 |
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81 #define BIT5 32 |
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82 #define BIT4 16 |
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83 #define BIT1 2 |
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84 #define BIT0 1 |
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85 |
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86 #define ZSTD_WINDOWLOG_ABSOLUTEMIN 10 |
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87 static const size_t ZSTD_fcs_fieldSize[4] = { 0, 2, 4, 8 }; |
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88 static const size_t ZSTD_did_fieldSize[4] = { 0, 1, 2, 4 }; |
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89 |
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90 #define ZSTD_BLOCKHEADERSIZE 3 /* C standard doesn't allow `static const` variable to be init using another `static const` variable */ |
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91 static const size_t ZSTD_blockHeaderSize = ZSTD_BLOCKHEADERSIZE; |
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92 typedef enum { bt_raw, bt_rle, bt_compressed, bt_reserved } blockType_e; |
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93 |
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94 #define MIN_SEQUENCES_SIZE 1 /* nbSeq==0 */ |
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95 #define MIN_CBLOCK_SIZE (1 /*litCSize*/ + 1 /* RLE or RAW */ + MIN_SEQUENCES_SIZE /* nbSeq==0 */) /* for a non-null block */ |
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96 |
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97 #define HufLog 12 |
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98 typedef enum { set_basic, set_rle, set_compressed, set_repeat } symbolEncodingType_e; |
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99 |
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100 #define LONGNBSEQ 0x7F00 |
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101 |
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102 #define MINMATCH 3 |
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103 #define EQUAL_READ32 4 |
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104 |
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105 #define Litbits 8 |
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106 #define MaxLit ((1<<Litbits) - 1) |
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107 #define MaxML 52 |
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108 #define MaxLL 35 |
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109 #define MaxOff 28 |
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110 #define MaxSeq MAX(MaxLL, MaxML) /* Assumption : MaxOff < MaxLL,MaxML */ |
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111 #define MLFSELog 9 |
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112 #define LLFSELog 9 |
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113 #define OffFSELog 8 |
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114 |
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115 static const U32 LL_bits[MaxLL+1] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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parents:
diff
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|
116 1, 1, 1, 1, 2, 2, 3, 3, 4, 6, 7, 8, 9,10,11,12, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
117 13,14,15,16 }; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
118 static const S16 LL_defaultNorm[MaxLL+1] = { 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
119 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 1, 1, 1, 1, 1, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
120 -1,-1,-1,-1 }; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
121 #define LL_DEFAULTNORMLOG 6 /* for static allocation */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
122 static const U32 LL_defaultNormLog = LL_DEFAULTNORMLOG; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
123 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
124 static const U32 ML_bits[MaxML+1] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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125 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
126 1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 7, 8, 9,10,11, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
127 12,13,14,15,16 }; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
128 static const S16 ML_defaultNorm[MaxML+1] = { 1, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
129 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
130 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,-1,-1, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
131 -1,-1,-1,-1,-1 }; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
132 #define ML_DEFAULTNORMLOG 6 /* for static allocation */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
133 static const U32 ML_defaultNormLog = ML_DEFAULTNORMLOG; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
134 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
135 static const S16 OF_defaultNorm[MaxOff+1] = { 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
136 1, 1, 1, 1, 1, 1, 1, 1,-1,-1,-1,-1,-1 }; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
137 #define OF_DEFAULTNORMLOG 5 /* for static allocation */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
138 static const U32 OF_defaultNormLog = OF_DEFAULTNORMLOG; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
139 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
140 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
141 /*-******************************************* |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
142 * Shared functions to include for inlining |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
143 *********************************************/ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
144 static void ZSTD_copy8(void* dst, const void* src) { memcpy(dst, src, 8); } |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
145 #define COPY8(d,s) { ZSTD_copy8(d,s); d+=8; s+=8; } |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
146 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
147 /*! ZSTD_wildcopy() : |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
148 * custom version of memcpy(), can copy up to 7 bytes too many (8 bytes if length==0) */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
149 #define WILDCOPY_OVERLENGTH 8 |
30822
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30434
diff
changeset
|
150 MEM_STATIC void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length) |
30434
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
151 { |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
152 const BYTE* ip = (const BYTE*)src; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
153 BYTE* op = (BYTE*)dst; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
154 BYTE* const oend = op + length; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
155 do |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
156 COPY8(op, ip) |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
157 while (op < oend); |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
158 } |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
159 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
160 MEM_STATIC void ZSTD_wildcopy_e(void* dst, const void* src, void* dstEnd) /* should be faster for decoding, but strangely, not verified on all platform */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
161 { |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
162 const BYTE* ip = (const BYTE*)src; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
163 BYTE* op = (BYTE*)dst; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
164 BYTE* const oend = (BYTE*)dstEnd; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
165 do |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
166 COPY8(op, ip) |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
167 while (op < oend); |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
168 } |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
169 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
170 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
171 /*-******************************************* |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
172 * Private interfaces |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
173 *********************************************/ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
174 typedef struct ZSTD_stats_s ZSTD_stats_t; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
175 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
176 typedef struct { |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
177 U32 off; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
178 U32 len; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
179 } ZSTD_match_t; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
180 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
181 typedef struct { |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
182 U32 price; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
183 U32 off; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
184 U32 mlen; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
185 U32 litlen; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
186 U32 rep[ZSTD_REP_NUM]; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
187 } ZSTD_optimal_t; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
188 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
189 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
190 typedef struct seqDef_s { |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
191 U32 offset; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
192 U16 litLength; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
193 U16 matchLength; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
194 } seqDef; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
195 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
196 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
197 typedef struct { |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
198 seqDef* sequencesStart; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
199 seqDef* sequences; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
200 BYTE* litStart; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
201 BYTE* lit; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
202 BYTE* llCode; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
203 BYTE* mlCode; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
204 BYTE* ofCode; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
205 U32 longLengthID; /* 0 == no longLength; 1 == Lit.longLength; 2 == Match.longLength; */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
206 U32 longLengthPos; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
207 /* opt */ |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
208 ZSTD_optimal_t* priceTable; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
209 ZSTD_match_t* matchTable; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
210 U32* matchLengthFreq; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
211 U32* litLengthFreq; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
212 U32* litFreq; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
213 U32* offCodeFreq; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
214 U32 matchLengthSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
215 U32 matchSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
216 U32 litLengthSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
217 U32 litSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
218 U32 offCodeSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
219 U32 log2matchLengthSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
220 U32 log2matchSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
221 U32 log2litLengthSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
222 U32 log2litSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
223 U32 log2offCodeSum; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
224 U32 factor; |
30822
b54a2984cdd4
zstd: vendor python-zstandard 0.6.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30434
diff
changeset
|
225 U32 staticPrices; |
30434
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
226 U32 cachedPrice; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
227 U32 cachedLitLength; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
228 const BYTE* cachedLiterals; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
229 } seqStore_t; |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
230 |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
231 const seqStore_t* ZSTD_getSeqStore(const ZSTD_CCtx* ctx); |
2e484bdea8c4
zstd: vendor zstd 1.1.1
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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232 void ZSTD_seqToCodes(const seqStore_t* seqStorePtr); |
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233 int ZSTD_isSkipFrame(ZSTD_DCtx* dctx); |
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234 |
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235 /* custom memory allocation functions */ |
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236 void* ZSTD_defaultAllocFunction(void* opaque, size_t size); |
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237 void ZSTD_defaultFreeFunction(void* opaque, void* address); |
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238 #ifndef ZSTD_DLL_IMPORT |
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239 static const ZSTD_customMem defaultCustomMem = { ZSTD_defaultAllocFunction, ZSTD_defaultFreeFunction, NULL }; |
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240 #endif |
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241 void* ZSTD_malloc(size_t size, ZSTD_customMem customMem); |
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242 void ZSTD_free(void* ptr, ZSTD_customMem customMem); |
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243 |
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244 |
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245 /*====== common function ======*/ |
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246 |
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247 MEM_STATIC U32 ZSTD_highbit32(U32 val) |
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248 { |
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249 # if defined(_MSC_VER) /* Visual */ |
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250 unsigned long r=0; |
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251 _BitScanReverse(&r, val); |
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252 return (unsigned)r; |
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253 # elif defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */ |
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254 return 31 - __builtin_clz(val); |
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255 # else /* Software version */ |
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256 static const int DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 }; |
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257 U32 v = val; |
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258 int r; |
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259 v |= v >> 1; |
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260 v |= v >> 2; |
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261 v |= v >> 4; |
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262 v |= v >> 8; |
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263 v |= v >> 16; |
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264 r = DeBruijnClz[(U32)(v * 0x07C4ACDDU) >> 27]; |
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265 return r; |
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266 # endif |
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267 } |
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268 |
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269 |
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270 #endif /* ZSTD_CCOMMON_H_MODULE */ |