physfs/lzma/CPP/7zip/Archive/Common/CoderMixer2.cpp

122 lines
3.4 KiB
C++

// CoderMixer2.cpp
#include "StdAfx.h"
#include "CoderMixer2.h"
namespace NCoderMixer {
CBindReverseConverter::CBindReverseConverter(const CBindInfo &srcBindInfo):
_srcBindInfo(srcBindInfo)
{
srcBindInfo.GetNumStreams(NumSrcInStreams, _numSrcOutStreams);
UInt32 j;
for (j = 0; j < NumSrcInStreams; j++)
{
_srcInToDestOutMap.Add(0);
DestOutToSrcInMap.Add(0);
}
for (j = 0; j < _numSrcOutStreams; j++)
{
_srcOutToDestInMap.Add(0);
_destInToSrcOutMap.Add(0);
}
UInt32 destInOffset = 0;
UInt32 destOutOffset = 0;
UInt32 srcInOffset = NumSrcInStreams;
UInt32 srcOutOffset = _numSrcOutStreams;
for (int i = srcBindInfo.Coders.Size() - 1; i >= 0; i--)
{
const CCoderStreamsInfo &srcCoderInfo = srcBindInfo.Coders[i];
srcInOffset -= srcCoderInfo.NumInStreams;
srcOutOffset -= srcCoderInfo.NumOutStreams;
UInt32 j;
for (j = 0; j < srcCoderInfo.NumInStreams; j++, destOutOffset++)
{
UInt32 index = srcInOffset + j;
_srcInToDestOutMap[index] = destOutOffset;
DestOutToSrcInMap[destOutOffset] = index;
}
for (j = 0; j < srcCoderInfo.NumOutStreams; j++, destInOffset++)
{
UInt32 index = srcOutOffset + j;
_srcOutToDestInMap[index] = destInOffset;
_destInToSrcOutMap[destInOffset] = index;
}
}
}
void CBindReverseConverter::CreateReverseBindInfo(CBindInfo &destBindInfo)
{
destBindInfo.Coders.Clear();
destBindInfo.BindPairs.Clear();
destBindInfo.InStreams.Clear();
destBindInfo.OutStreams.Clear();
int i;
for (i = _srcBindInfo.Coders.Size() - 1; i >= 0; i--)
{
const CCoderStreamsInfo &srcCoderInfo = _srcBindInfo.Coders[i];
CCoderStreamsInfo destCoderInfo;
destCoderInfo.NumInStreams = srcCoderInfo.NumOutStreams;
destCoderInfo.NumOutStreams = srcCoderInfo.NumInStreams;
destBindInfo.Coders.Add(destCoderInfo);
}
for (i = _srcBindInfo.BindPairs.Size() - 1; i >= 0; i--)
{
const CBindPair &srcBindPair = _srcBindInfo.BindPairs[i];
CBindPair destBindPair;
destBindPair.InIndex = _srcOutToDestInMap[srcBindPair.OutIndex];
destBindPair.OutIndex = _srcInToDestOutMap[srcBindPair.InIndex];
destBindInfo.BindPairs.Add(destBindPair);
}
for (i = 0; i < _srcBindInfo.InStreams.Size(); i++)
destBindInfo.OutStreams.Add(_srcInToDestOutMap[_srcBindInfo.InStreams[i]]);
for (i = 0; i < _srcBindInfo.OutStreams.Size(); i++)
destBindInfo.InStreams.Add(_srcOutToDestInMap[_srcBindInfo.OutStreams[i]]);
}
CCoderInfo2::CCoderInfo2(UInt32 numInStreams, UInt32 numOutStreams):
NumInStreams(numInStreams),
NumOutStreams(numOutStreams)
{
InSizes.Reserve(NumInStreams);
InSizePointers.Reserve(NumInStreams);
OutSizePointers.Reserve(NumOutStreams);
OutSizePointers.Reserve(NumOutStreams);
}
static void SetSizes(const UInt64 **srcSizes, CRecordVector<UInt64> &sizes,
CRecordVector<const UInt64 *> &sizePointers, UInt32 numItems)
{
sizes.Clear();
sizePointers.Clear();
for(UInt32 i = 0; i < numItems; i++)
{
if (srcSizes == 0 || srcSizes[i] == NULL)
{
sizes.Add(0);
sizePointers.Add(NULL);
}
else
{
sizes.Add(*srcSizes[i]);
sizePointers.Add(&sizes.Back());
}
}
}
void CCoderInfo2::SetCoderInfo(const UInt64 **inSizes,
const UInt64 **outSizes)
{
SetSizes(inSizes, InSizes, InSizePointers, NumInStreams);
SetSizes(outSizes, OutSizes, OutSizePointers, NumOutStreams);
}
}