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implemented 'Nemesis' compression.

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morkt
2016-01-25 09:02:39 +04:00
parent 0b1f554660
commit 3a5b3f7ca0
4 changed files with 368 additions and 58 deletions
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22
ArcFormats/Entis/EriReader.cs
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@@ -1368,16 +1368,16 @@ namespace GameRes.Formats.Entis
internal class ProbDecodeContext : RLEDecodeContext
{
uint m_dwCodeRegister;
uint m_dwAugendRegister;
int m_nPostBitCount;
byte[] m_bytLastSymbol = new byte[4];
protected uint m_dwCodeRegister;
protected uint m_dwAugendRegister;
protected int m_nPostBitCount;
protected byte[] m_bytLastSymbol = new byte[4];
ErisaProbModel m_pPhraseLenProb = new ErisaProbModel();
ErisaProbModel m_pPhraseIndexProb = new ErisaProbModel();
ErisaProbModel m_pRunLenProb = new ErisaProbModel();
ErisaProbModel m_pLastERISAProb;
ErisaProbModel[] m_ppTableERISA;
protected ErisaProbModel m_pPhraseLenProb = new ErisaProbModel();
protected ErisaProbModel m_pPhraseIndexProb = new ErisaProbModel();
protected ErisaProbModel m_pRunLenProb = new ErisaProbModel();
protected ErisaProbModel m_pLastERISAProb;
protected ErisaProbModel[] m_ppTableERISA;
public ProbDecodeContext (uint nBufferingSize) : base (nBufferingSize)
{
@@ -1467,7 +1467,7 @@ namespace GameRes.Formats.Entis
return nSymbol;
}
int DecodeERISACodeIndex (ErisaProbModel pModel)
protected int DecodeERISACodeIndex (ErisaProbModel pModel)
{
uint dwAcc = m_dwCodeRegister * pModel.TotalCount / m_dwAugendRegister;
if (dwAcc >= ErisaProbModel.TotalLimit)
@@ -1499,7 +1499,7 @@ namespace GameRes.Formats.Entis
{
if ((++m_nPostBitCount) >= 256)
return -1;
nNextBit = 0 ;
nNextBit = 0;
}
m_dwCodeRegister = (m_dwCodeRegister << 1) | ((uint)nNextBit & 1);
m_dwAugendRegister <<= 1;