vcs.maemo.org Git - physicsfs/blob - lzma/CPP/7zip/Archive/Common/CoderMixer2.cpp

   1 // CoderMixer2.cpp
   2
   3 #include "StdAfx.h"
   4
   5 #include "CoderMixer2.h"
   6
   7 namespace NCoderMixer {
   8
   9 CBindReverseConverter::CBindReverseConverter(const CBindInfo &srcBindInfo):
  10   _srcBindInfo(srcBindInfo)
  11 {
  12   srcBindInfo.GetNumStreams(NumSrcInStreams, _numSrcOutStreams);
  13
  14   UInt32  j;
  15   for (j = 0; j < NumSrcInStreams; j++)
  16   {
  17     _srcInToDestOutMap.Add(0);
  18     DestOutToSrcInMap.Add(0);
  19   }
  20   for (j = 0; j < _numSrcOutStreams; j++)
  21   {
  22     _srcOutToDestInMap.Add(0);
  23     _destInToSrcOutMap.Add(0);
  24   }
  25
  26   UInt32 destInOffset = 0;
  27   UInt32 destOutOffset = 0;
  28   UInt32 srcInOffset = NumSrcInStreams;
  29   UInt32 srcOutOffset = _numSrcOutStreams;
  30
  31   for (int i = srcBindInfo.Coders.Size() - 1; i >= 0; i--)
  32   {
  33     const CCoderStreamsInfo &srcCoderInfo = srcBindInfo.Coders[i];
  34
  35     srcInOffset -= srcCoderInfo.NumInStreams;
  36     srcOutOffset -= srcCoderInfo.NumOutStreams;
  37
  38     UInt32 j;
  39     for (j = 0; j < srcCoderInfo.NumInStreams; j++, destOutOffset++)
  40     {
  41       UInt32 index = srcInOffset + j;
  42       _srcInToDestOutMap[index] = destOutOffset;
  43       DestOutToSrcInMap[destOutOffset] = index;
  44     }
  45     for (j = 0; j < srcCoderInfo.NumOutStreams; j++, destInOffset++)
  46     {
  47       UInt32 index = srcOutOffset + j;
  48       _srcOutToDestInMap[index] = destInOffset;
  49       _destInToSrcOutMap[destInOffset] = index;
  50     }
  51   }
  52 }
  53
  54 void CBindReverseConverter::CreateReverseBindInfo(CBindInfo &destBindInfo)
  55 {
  56   destBindInfo.Coders.Clear();
  57   destBindInfo.BindPairs.Clear();
  58   destBindInfo.InStreams.Clear();
  59   destBindInfo.OutStreams.Clear();
  60
  61   int i;
  62   for (i = _srcBindInfo.Coders.Size() - 1; i >= 0; i--)
  63   {
  64     const CCoderStreamsInfo &srcCoderInfo = _srcBindInfo.Coders[i];
  65     CCoderStreamsInfo destCoderInfo;
  66     destCoderInfo.NumInStreams = srcCoderInfo.NumOutStreams;
  67     destCoderInfo.NumOutStreams = srcCoderInfo.NumInStreams;
  68     destBindInfo.Coders.Add(destCoderInfo);
  69   }
  70   for (i = _srcBindInfo.BindPairs.Size() - 1; i >= 0; i--)
  71   {
  72     const CBindPair &srcBindPair = _srcBindInfo.BindPairs[i];
  73     CBindPair destBindPair;
  74     destBindPair.InIndex = _srcOutToDestInMap[srcBindPair.OutIndex];
  75     destBindPair.OutIndex = _srcInToDestOutMap[srcBindPair.InIndex];
  76     destBindInfo.BindPairs.Add(destBindPair);
  77   }
  78   for (i = 0; i < _srcBindInfo.InStreams.Size(); i++)
  79     destBindInfo.OutStreams.Add(_srcInToDestOutMap[_srcBindInfo.InStreams[i]]);
  80   for (i = 0; i < _srcBindInfo.OutStreams.Size(); i++)
  81     destBindInfo.InStreams.Add(_srcOutToDestInMap[_srcBindInfo.OutStreams[i]]);
  82 }
  83
  84 CCoderInfo2::CCoderInfo2(UInt32 numInStreams, UInt32 numOutStreams):
  85     NumInStreams(numInStreams),
  86     NumOutStreams(numOutStreams)
  87 {
  88   InSizes.Reserve(NumInStreams);
  89   InSizePointers.Reserve(NumInStreams);
  90   OutSizePointers.Reserve(NumOutStreams);
  91   OutSizePointers.Reserve(NumOutStreams);
  92 }
  93
  94 static void SetSizes(const UInt64 **srcSizes, CRecordVector<UInt64> &sizes,
  95     CRecordVector<const UInt64 *> &sizePointers, UInt32 numItems)
  96 {
  97   sizes.Clear();
  98   sizePointers.Clear();
  99   for(UInt32 i = 0; i < numItems; i++)
 100   {
 101     if (srcSizes == 0 || srcSizes[i] == NULL)
 102     {
 103       sizes.Add(0);
 104       sizePointers.Add(NULL);
 105     }
 106     else
 107     {
 108       sizes.Add(*srcSizes[i]);
 109       sizePointers.Add(&sizes.Back());
 110     }
 111   }
 112 }
 113
 114 void CCoderInfo2::SetCoderInfo(const UInt64 **inSizes,
 115       const UInt64 **outSizes)
 116 {
 117   SetSizes(inSizes, InSizes, InSizePointers, NumInStreams);
 118   SetSizes(outSizes, OutSizes, OutSizePointers, NumOutStreams);
 119 }
 120
 121 }