xref: /aosp_15_r20/external/lzma/CPP/7zip/Compress/Rar1Decoder.h (revision f6dc9357d832569d4d1f5d24eacdb3935a1ae8e6)
1*f6dc9357SAndroid Build Coastguard Worker // Rar1Decoder.h
2*f6dc9357SAndroid Build Coastguard Worker // According to unRAR license, this code may not be used to develop
3*f6dc9357SAndroid Build Coastguard Worker // a program that creates RAR archives
4*f6dc9357SAndroid Build Coastguard Worker 
5*f6dc9357SAndroid Build Coastguard Worker #ifndef ZIP7_INC_COMPRESS_RAR1_DECODER_H
6*f6dc9357SAndroid Build Coastguard Worker #define ZIP7_INC_COMPRESS_RAR1_DECODER_H
7*f6dc9357SAndroid Build Coastguard Worker 
8*f6dc9357SAndroid Build Coastguard Worker #include "../../Common/MyCom.h"
9*f6dc9357SAndroid Build Coastguard Worker 
10*f6dc9357SAndroid Build Coastguard Worker #include "../ICoder.h"
11*f6dc9357SAndroid Build Coastguard Worker 
12*f6dc9357SAndroid Build Coastguard Worker #include "../Common/InBuffer.h"
13*f6dc9357SAndroid Build Coastguard Worker 
14*f6dc9357SAndroid Build Coastguard Worker #include "BitmDecoder.h"
15*f6dc9357SAndroid Build Coastguard Worker #include "LzOutWindow.h"
16*f6dc9357SAndroid Build Coastguard Worker 
17*f6dc9357SAndroid Build Coastguard Worker namespace NCompress {
18*f6dc9357SAndroid Build Coastguard Worker namespace NRar1 {
19*f6dc9357SAndroid Build Coastguard Worker 
20*f6dc9357SAndroid Build Coastguard Worker const unsigned kNumRepDists = 4;
21*f6dc9357SAndroid Build Coastguard Worker 
22*f6dc9357SAndroid Build Coastguard Worker Z7_CLASS_IMP_COM_2(
23*f6dc9357SAndroid Build Coastguard Worker   CDecoder
24*f6dc9357SAndroid Build Coastguard Worker   , ICompressCoder
25*f6dc9357SAndroid Build Coastguard Worker   , ICompressSetDecoderProperties2
26*f6dc9357SAndroid Build Coastguard Worker )
27*f6dc9357SAndroid Build Coastguard Worker   bool _isSolid;
28*f6dc9357SAndroid Build Coastguard Worker   bool _solidAllowed;
29*f6dc9357SAndroid Build Coastguard Worker   bool StMode;
30*f6dc9357SAndroid Build Coastguard Worker 
31*f6dc9357SAndroid Build Coastguard Worker   CLzOutWindow m_OutWindowStream;
32*f6dc9357SAndroid Build Coastguard Worker   NBitm::CDecoder<CInBuffer> m_InBitStream;
33*f6dc9357SAndroid Build Coastguard Worker 
34*f6dc9357SAndroid Build Coastguard Worker   UInt64 m_UnpackSize;
35*f6dc9357SAndroid Build Coastguard Worker 
36*f6dc9357SAndroid Build Coastguard Worker   UInt32 LastDist;
37*f6dc9357SAndroid Build Coastguard Worker   UInt32 LastLength;
38*f6dc9357SAndroid Build Coastguard Worker 
39*f6dc9357SAndroid Build Coastguard Worker   UInt32 m_RepDistPtr;
40*f6dc9357SAndroid Build Coastguard Worker   UInt32 m_RepDists[kNumRepDists];
41*f6dc9357SAndroid Build Coastguard Worker 
42*f6dc9357SAndroid Build Coastguard Worker   int FlagsCnt;
43*f6dc9357SAndroid Build Coastguard Worker   UInt32 FlagBuf, AvrPlc, AvrPlcB, AvrLn1, AvrLn2, AvrLn3;
44*f6dc9357SAndroid Build Coastguard Worker   unsigned Buf60, NumHuf, LCount;
45*f6dc9357SAndroid Build Coastguard Worker   UInt32 Nhfb, Nlzb, MaxDist3;
46*f6dc9357SAndroid Build Coastguard Worker 
47*f6dc9357SAndroid Build Coastguard Worker   UInt32 ChSet[256], ChSetA[256], ChSetB[256], ChSetC[256];
48*f6dc9357SAndroid Build Coastguard Worker   UInt32 Place[256], PlaceA[256], PlaceB[256], PlaceC[256];
49*f6dc9357SAndroid Build Coastguard Worker   UInt32 NToPl[256], NToPlB[256], NToPlC[256];
50*f6dc9357SAndroid Build Coastguard Worker 
51*f6dc9357SAndroid Build Coastguard Worker   UInt32 ReadBits(unsigned numBits);
52*f6dc9357SAndroid Build Coastguard Worker   HRESULT CopyBlock(UInt32 distance, UInt32 len);
53*f6dc9357SAndroid Build Coastguard Worker   UInt32 DecodeNum(const Byte *numTab);
54*f6dc9357SAndroid Build Coastguard Worker   HRESULT ShortLZ();
55*f6dc9357SAndroid Build Coastguard Worker   HRESULT LongLZ();
56*f6dc9357SAndroid Build Coastguard Worker   HRESULT HuffDecode();
57*f6dc9357SAndroid Build Coastguard Worker   void GetFlagsBuf();
58*f6dc9357SAndroid Build Coastguard Worker   void CorrHuff(UInt32 *CharSet, UInt32 *NumToPlace);
59*f6dc9357SAndroid Build Coastguard Worker   void OldUnpWriteBuf();
60*f6dc9357SAndroid Build Coastguard Worker 
61*f6dc9357SAndroid Build Coastguard Worker   HRESULT CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
62*f6dc9357SAndroid Build Coastguard Worker       const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
63*f6dc9357SAndroid Build Coastguard Worker 
64*f6dc9357SAndroid Build Coastguard Worker public:
65*f6dc9357SAndroid Build Coastguard Worker   CDecoder();
66*f6dc9357SAndroid Build Coastguard Worker };
67*f6dc9357SAndroid Build Coastguard Worker 
68*f6dc9357SAndroid Build Coastguard Worker }}
69*f6dc9357SAndroid Build Coastguard Worker 
70*f6dc9357SAndroid Build Coastguard Worker #endif
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