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1 // Bcj2Coder.h
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2
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3 #ifndef __COMPRESS_BCJ2_CODER_H
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4 #define __COMPRESS_BCJ2_CODER_H
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5
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6 #include "../../Common/MyCom.h"
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7
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8 #include "../ICoder.h"
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9
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10 #include "RangeCoderBit.h"
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11
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12 namespace NCompress {
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13 namespace NBcj2 {
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14
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15 const int kNumMoveBits = 5;
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16
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17 #ifndef EXTRACT_ONLY
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18
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19 class CEncoder:
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20 public ICompressCoder2,
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21 public CMyUnknownImp
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22 {
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23 Byte *_buffer;
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24 public:
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25 CEncoder(): _buffer(0) {};
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26 ~CEncoder();
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27 bool Create();
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28
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29 COutBuffer _mainStream;
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30 COutBuffer _callStream;
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31 COutBuffer _jumpStream;
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32 NCompress::NRangeCoder::CEncoder _rangeEncoder;
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33 NCompress::NRangeCoder::CBitEncoder<kNumMoveBits> _statusEncoder[256 + 2];
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34
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35 HRESULT Flush();
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36 void ReleaseStreams()
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37 {
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38 _mainStream.ReleaseStream();
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39 _callStream.ReleaseStream();
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40 _jumpStream.ReleaseStream();
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41 _rangeEncoder.ReleaseStream();
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42 }
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43
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44 class CCoderReleaser
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45 {
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46 CEncoder *_coder;
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47 public:
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48 CCoderReleaser(CEncoder *coder): _coder(coder) {}
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49 ~CCoderReleaser() { _coder->ReleaseStreams(); }
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50 };
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51
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52 public:
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53
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54 MY_UNKNOWN_IMP
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55
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56 HRESULT CodeReal(ISequentialInStream **inStreams,
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57 const UInt64 **inSizes,
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58 UInt32 numInStreams,
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59 ISequentialOutStream **outStreams,
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60 const UInt64 **outSizes,
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61 UInt32 numOutStreams,
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62 ICompressProgressInfo *progress);
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63 STDMETHOD(Code)(ISequentialInStream **inStreams,
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64 const UInt64 **inSizes,
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65 UInt32 numInStreams,
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66 ISequentialOutStream **outStreams,
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67 const UInt64 **outSizes,
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68 UInt32 numOutStreams,
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69 ICompressProgressInfo *progress);
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70 };
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71
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72 #endif
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73
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74 class CDecoder:
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75 public ICompressCoder2,
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76 public CMyUnknownImp
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77 {
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78 public:
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79 CInBuffer _mainInStream;
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80 CInBuffer _callStream;
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81 CInBuffer _jumpStream;
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82 NCompress::NRangeCoder::CDecoder _rangeDecoder;
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83 NCompress::NRangeCoder::CBitDecoder<kNumMoveBits> _statusDecoder[256 + 2];
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84
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85 COutBuffer _outStream;
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86
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87 void ReleaseStreams()
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88 {
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89 _mainInStream.ReleaseStream();
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90 _callStream.ReleaseStream();
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91 _jumpStream.ReleaseStream();
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92 _rangeDecoder.ReleaseStream();
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93 _outStream.ReleaseStream();
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94 }
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95
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96 HRESULT Flush() { return _outStream.Flush(); }
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97 class CCoderReleaser
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98 {
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99 CDecoder *_coder;
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100 public:
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101 CCoderReleaser(CDecoder *coder): _coder(coder) {}
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102 ~CCoderReleaser() { _coder->ReleaseStreams(); }
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103 };
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104
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105 public:
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106 MY_UNKNOWN_IMP
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107 HRESULT CodeReal(ISequentialInStream **inStreams,
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108 const UInt64 **inSizes,
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109 UInt32 numInStreams,
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110 ISequentialOutStream **outStreams,
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111 const UInt64 **outSizes,
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112 UInt32 numOutStreams,
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113 ICompressProgressInfo *progress);
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114 STDMETHOD(Code)(ISequentialInStream **inStreams,
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115 const UInt64 **inSizes,
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116 UInt32 numInStreams,
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117 ISequentialOutStream **outStreams,
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118 const UInt64 **outSizes,
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119 UInt32 numOutStreams,
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120 ICompressProgressInfo *progress);
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121 };
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122
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123 }}
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124
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125 #endif
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