本文整理汇总了C++中CState::UpdateMatch方法的典型用法代码示例。如果您正苦于以下问题：C++ CState::UpdateMatch方法的具体用法？C++ CState::UpdateMatch怎么用？C++ CState::UpdateMatch使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CState的用法示例。
在下文中一共展示了CState::UpdateMatch方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Code
//.........这里部分代码省略.........
previousByte = m_LiteralDecoder.DecodeNormal(&m_RangeDecoder,
nowPos, previousByte);
m_OutWindowStream.PutOneByte(previousByte);
nowPos++;
}
else
{
peviousIsMatch = true;
UINT32 distance;
int len;
if(m_Decoders.MatchChoiceDecoders[state.Index].Decode(&m_RangeDecoder))
{
if(!m_Decoders.MatchRepChoiceDecoders[state.Index].Decode(&m_RangeDecoder))
{
if(!m_Decoders.MatchRepShortChoiceDecoders[state.Index][posState].Decode(&m_RangeDecoder))
{
state.UpdateShortRep();
previousByte = m_OutWindowStream.GetOneByte(0 - repDistances[0]);
m_OutWindowStream.PutOneByte(previousByte);
nowPos++;
continue;
}
distance = repDistances[0];
}
else
{
if(!m_Decoders.MatchRep1ChoiceDecoders[state.Index].Decode(&m_RangeDecoder))
distance = repDistances[1];
else
{
if (!m_Decoders.MatchRep2ChoiceDecoders[state.Index].Decode(&m_RangeDecoder))
distance = repDistances[2];
else
{
distance = repDistances[3];
repDistances[3] = repDistances[2];
}
repDistances[2] = repDistances[1];
}
repDistances[1] = repDistances[0];
repDistances[0] = distance;
}
len = m_RepMatchLenDecoder.Decode(&m_RangeDecoder, posState);
state.UpdateRep();
}
else
{
len = m_LenDecoder.Decode(&m_RangeDecoder, posState);
state.UpdateMatch();
int posSlot = m_PosSlotDecoder[GetLenToPosState2(len)].Decode(&m_RangeDecoder);
if (posSlot >= kStartPosModelIndex)
{
int numDirectBits = ((posSlot >> 1) - 1);
distance = ((2 | (posSlot & 1)) << numDirectBits);
if (posSlot < kEndPosModelIndex)
distance += m_PosDecoder.Decode(&m_RangeDecoder, posSlot);
else
{
distance += (m_RangeDecoder.DecodeDirectBits(
numDirectBits - kNumAlignBits) << kNumAlignBits);
distance += m_PosAlignDecoder.Decode(&m_RangeDecoder);
}
}
else
distance = posSlot;
distance++;
repDistances[3] = repDistances[2];
repDistances[2] = repDistances[1];
repDistances[1] = repDistances[0];
repDistances[0] = distance;
//LZMAMemCopy(repDistances, repDistances + 1, kNumRepDistances * sizeof(UINT32));
}
// it's for stream version (without knowing uncompressed size)
//if (distance >= _dictionarySizeCheck)
if (!distance)
break;
if (distance > nowPos)
return (-1);
len += kMatchMinLen;
nowPos += len;
// CopyBackBlock
{
UINT32 fromPos = m_OutWindowStream._pos - distance;
if (fromPos >= m_OutWindowStream._windowSize)
fromPos += m_OutWindowStream._windowSize;
while (len--)
{
m_OutWindowStream._buffer[m_OutWindowStream._pos++] = m_OutWindowStream._buffer[fromPos++];
if (fromPos >= m_OutWindowStream._windowSize)
fromPos = 0;
m_OutWindowStream.Flush();
}
}
previousByte = m_OutWindowStream.GetOneByte((UINT32)(-1));
}示例2: CodeReal
HRESULT CDecoder::CodeReal(ISequentialInStream *anInStream,
ISequentialOutStream *anOutStream,
const UINT64 *, const UINT64 *anOutSize)
{
if (anOutSize == NULL)
return E_INVALIDARG;
Init(anInStream, anOutStream);
CState aState;
aState.Init();
bool aPeviousIsMatch = false;
BYTE aPreviousByte = 0;
UINT32 aRepDistances[kNumRepDistances];
for(UINT32 i = 0 ; i < kNumRepDistances; i++)
aRepDistances[i] = 0;
UINT64 aNowPos64 = 0;
UINT64 aSize = *anOutSize;
while(aNowPos64 < aSize)
{
UINT64 aNext = MyMin(aNowPos64 + (1 << 18), aSize);
while(aNowPos64 < aNext)
{
UINT32 aPosState = UINT32(aNowPos64) & m_PosStateMask;
if (m_MainChoiceDecoders[aState.m_Index][aPosState].Decode(&m_RangeDecoder) == (UINT32) kMainChoiceLiteralIndex)
{
// aCounts[0]++;
aState.UpdateChar();
if(aPeviousIsMatch)
{
BYTE aMatchByte = m_OutWindowStream.GetOneByte(0 - aRepDistances[0] - 1);
aPreviousByte = m_LiteralDecoder.DecodeWithMatchByte(&m_RangeDecoder,
UINT32(aNowPos64), aPreviousByte, aMatchByte);
aPeviousIsMatch = false;
}
else
aPreviousByte = m_LiteralDecoder.DecodeNormal(&m_RangeDecoder,
UINT32(aNowPos64), aPreviousByte);
m_OutWindowStream.PutOneByte(aPreviousByte);
aNowPos64++;
}
else
{
aPeviousIsMatch = true;
UINT32 aDistance, aLen;
if(m_MatchChoiceDecoders[aState.m_Index].Decode(&m_RangeDecoder) ==
(UINT32) kMatchChoiceRepetitionIndex)
{
if(m_MatchRepChoiceDecoders[aState.m_Index].Decode(&m_RangeDecoder) == 0)
{
if(m_MatchRepShortChoiceDecoders[aState.m_Index][aPosState].Decode(&m_RangeDecoder) == 0)
{
aState.UpdateShortRep();
aPreviousByte = m_OutWindowStream.GetOneByte(0 - aRepDistances[0] - 1);
m_OutWindowStream.PutOneByte(aPreviousByte);
aNowPos64++;
// aCounts[3 + 4]++;
continue;
}
// aCounts[3 + 0]++;
aDistance = aRepDistances[0];
}
else
{
if(m_MatchRep1ChoiceDecoders[aState.m_Index].Decode(&m_RangeDecoder) == 0)
{
aDistance = aRepDistances[1];
aRepDistances[1] = aRepDistances[0];
// aCounts[3 + 1]++;
}
else
{
if (m_MatchRep2ChoiceDecoders[aState.m_Index].Decode(&m_RangeDecoder) == 0)
{
// aCounts[3 + 2]++;
aDistance = aRepDistances[2];
}
else
{
// aCounts[3 + 3]++;
aDistance = aRepDistances[3];
aRepDistances[3] = aRepDistances[2];
}
aRepDistances[2] = aRepDistances[1];
aRepDistances[1] = aRepDistances[0];
}
aRepDistances[0] = aDistance;
}
aLen = m_RepMatchLenDecoder.Decode(&m_RangeDecoder, aPosState) + kMatchMinLen;
// aCounts[aLen]++;
aState.UpdateRep();
}
else
{
aLen = kMatchMinLen + m_LenDecoder.Decode(&m_RangeDecoder, aPosState);
aState.UpdateMatch();
UINT32 aPosSlot = m_PosSlotDecoder[GetLenToPosState(aLen)].Decode(&m_RangeDecoder);
// aCounts[aPosSlot]++;
if (aPosSlot >= (UINT32) kStartPosModelIndex)
//.........这里部分代码省略.........