1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
// DeflateEncoder.h
#ifndef __DEFLATE_ENCODER_H
#define __DEFLATE_ENCODER_H
#include "../../../C/LzFind.h"
#include "../../Common/MyCom.h"
#include "../ICoder.h"
#include "BitlEncoder.h"
#include "DeflateConst.h"
namespace NCompress {
namespace NDeflate {
namespace NEncoder {
struct CCodeValue
{
UInt16 Len;
UInt16 Pos;
void SetAsLiteral() { Len = (1 << 15); }
bool IsLiteral() const { return (Len >= (1 << 15)); }
};
struct COptimal
{
UInt32 Price;
UInt16 PosPrev;
UInt16 BackPrev;
};
const UInt32 kNumOptsBase = 1 << 12;
const UInt32 kNumOpts = kNumOptsBase + kMatchMaxLen;
class CCoder;
struct CTables: public CLevels
{
bool UseSubBlocks;
bool StoreMode;
bool StaticMode;
UInt32 BlockSizeRes;
UInt32 m_Pos;
void InitStructures();
};
typedef struct _CSeqInStream
{
ISeqInStream SeqInStream;
ISequentialInStream *RealStream;
} CSeqInStream;
struct CEncProps
{
int Level;
int algo;
int fb;
int btMode;
UInt32 mc;
UInt32 numPasses;
CEncProps()
{
Level = -1;
mc = 0;
algo = fb = btMode = -1;
numPasses = (UInt32)(Int32)-1;
}
void Normalize();
};
class CCoder
{
CMatchFinder _lzInWindow;
CBitlEncoder m_OutStream;
CSeqInStream _seqInStream;
public:
CCodeValue *m_Values;
UInt16 *m_MatchDistances;
UInt32 m_NumFastBytes;
bool _fastMode;
bool _btMode;
UInt16 *m_OnePosMatchesMemory;
UInt16 *m_DistanceMemory;
UInt32 m_Pos;
unsigned m_NumPasses;
unsigned m_NumDivPasses;
bool m_CheckStatic;
bool m_IsMultiPass;
UInt32 m_ValueBlockSize;
UInt32 m_NumLenCombinations;
UInt32 m_MatchMaxLen;
const Byte *m_LenStart;
const Byte *m_LenDirectBits;
bool m_Created;
bool m_Deflate64Mode;
Byte m_LevelLevels[kLevelTableSize];
unsigned m_NumLitLenLevels;
unsigned m_NumDistLevels;
UInt32 m_NumLevelCodes;
UInt32 m_ValueIndex;
bool m_SecondPass;
UInt32 m_AdditionalOffset;
UInt32 m_OptimumEndIndex;
UInt32 m_OptimumCurrentIndex;
Byte m_LiteralPrices[256];
Byte m_LenPrices[kNumLenSymbolsMax];
Byte m_PosPrices[kDistTableSize64];
CLevels m_NewLevels;
UInt32 mainFreqs[kFixedMainTableSize];
UInt32 distFreqs[kDistTableSize64];
UInt32 mainCodes[kFixedMainTableSize];
UInt32 distCodes[kDistTableSize64];
UInt32 levelCodes[kLevelTableSize];
Byte levelLens[kLevelTableSize];
UInt32 BlockSizeRes;
CTables *m_Tables;
COptimal m_Optimum[kNumOpts];
UInt32 m_MatchFinderCycles;
void GetMatches();
void MovePos(UInt32 num);
UInt32 Backward(UInt32 &backRes, UInt32 cur);
UInt32 GetOptimal(UInt32 &backRes);
UInt32 GetOptimalFast(UInt32 &backRes);
void LevelTableDummy(const Byte *levels, unsigned numLevels, UInt32 *freqs);
void WriteBits(UInt32 value, unsigned numBits);
void LevelTableCode(const Byte *levels, unsigned numLevels, const Byte *lens, const UInt32 *codes);
void MakeTables(unsigned maxHuffLen);
UInt32 GetLzBlockPrice() const;
void TryBlock();
UInt32 TryDynBlock(unsigned tableIndex, UInt32 numPasses);
UInt32 TryFixedBlock(unsigned tableIndex);
void SetPrices(const CLevels &levels);
void WriteBlock();
HRESULT Create();
void Free();
void WriteStoreBlock(UInt32 blockSize, UInt32 additionalOffset, bool finalBlock);
void WriteTables(bool writeMode, bool finalBlock);
void WriteBlockData(bool writeMode, bool finalBlock);
UInt32 GetBlockPrice(unsigned tableIndex, unsigned numDivPasses);
void CodeBlock(unsigned tableIndex, bool finalBlock);
void SetProps(const CEncProps *props2);
public:
CCoder(bool deflate64Mode = false);
~CCoder();
HRESULT CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
HRESULT BaseCode(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
HRESULT BaseSetEncoderProperties2(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
};
class CCOMCoder :
public ICompressCoder,
public ICompressSetCoderProperties,
public CMyUnknownImp,
public CCoder
{
public:
MY_UNKNOWN_IMP2(ICompressCoder, ICompressSetCoderProperties)
CCOMCoder(): CCoder(false) {};
STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
};
class CCOMCoder64 :
public ICompressCoder,
public ICompressSetCoderProperties,
public CMyUnknownImp,
public CCoder
{
public:
MY_UNKNOWN_IMP2(ICompressCoder, ICompressSetCoderProperties)
CCOMCoder64(): CCoder(true) {};
STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
};
}}}
#endif
|
