void SetDictionarySize(uint dictionarySize)
{
if (m_DictionarySize != dictionarySize)
{
m_DictionarySize = dictionarySize;
m_DictionarySizeCheck = Math.Max(m_DictionarySize, 1);
uint blockSize = Math.Max(m_DictionarySizeCheck, (1 << 12));
//m_OutWindow.Create(blockSize);
OutWindow.GetInstance().Create(blockSize);
}
}
void Init(System.IO.Stream inStream, System.IO.Stream outStream)
{
m_RangeDecoder.Init(inStream);
//m_OutWindow.Init(outStream);
OutWindow.GetInstance().Init(outStream);
uint i;
for (i = 0; i < Base.kNumStates; i++)
{
for (uint j = 0; j <= m_PosStateMask; j++)
{
uint index = (i << Base.kNumPosStatesBitsMax) + j;
m_IsMatchDecoders[index].Init();
m_IsRep0LongDecoders[index].Init();
}
m_IsRepDecoders[i].Init();
m_IsRepG0Decoders[i].Init();
m_IsRepG1Decoders[i].Init();
m_IsRepG2Decoders[i].Init();
}
m_LiteralDecoder.Init();
//LiteralDecoder.GetInstance().Init();
for (i = 0; i < Base.kNumLenToPosStates; i++)
{
m_PosSlotDecoder[i].Init();
}
// m_PosSpecDecoder.Init();
for (i = 0; i < Base.kNumFullDistances - Base.kEndPosModelIndex; i++)
{
m_PosDecoders[i].Init();
}
m_LenDecoder.Init();
m_RepLenDecoder.Init();
m_PosAlignDecoder.Init();
}
public void Code(System.IO.Stream inStream, System.IO.Stream outStream,
Int64 inSize, Int64 outSize, ICodeProgress progress)
{
Init(inStream, outStream);
Base.State state = new Base.State();
state.Init();
uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;
UInt64 nowPos64 = 0;
UInt64 outSize64 = (UInt64)outSize;
if (nowPos64 < outSize64)
{
if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
{
throw new DataErrorException();
}
state.UpdateChar();
byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
//byte b = LiteralDecoder.GetInstance().DecodeNormal(m_RangeDecoder,0,0);
//m_OutWindow.PutByte(b);
OutWindow.GetInstance().PutByte(b);
nowPos64++;
}
while (nowPos64 < outSize64)
{
// UInt64 next = Math.Min(nowPos64 + (1 << 18), outSize64);
// while(nowPos64 < next)
{
uint posState = (uint)nowPos64 & m_PosStateMask;
if (m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
{
byte b;
//byte prevByte = m_OutWindow.GetByte(0);
byte prevByte = OutWindow.GetInstance().GetByte(0);
if (!state.IsCharState())
{
b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
(uint)nowPos64, prevByte, OutWindow.GetInstance().GetByte(rep0));
//b = LiteralDecoder.GetInstance().DecodeWithMatchByte(m_RangeDecoder,
// (uint)nowPos64, prevByte, OutWindow.GetInstance().GetByte(rep0));
}
//(uint)nowPos64, prevByte, m_OutWindow.GetByte(rep0));
else
{
b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
//b = LiteralDecoder.GetInstance().DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
}
//m_OutWindow.PutByte(b);
OutWindow.GetInstance().PutByte(b);
state.UpdateChar();
nowPos64++;
}
else
{
uint len;
if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
{
if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
{
if (m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
{
state.UpdateShortRep();
//m_OutWindow.PutByte(m_OutWindow.GetByte(rep0));
OutWindow.GetInstance().PutByte(OutWindow.GetInstance().GetByte(rep0));
nowPos64++;
continue;
}
}
else
{
UInt32 distance;
if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
{
distance = rep1;
}
else
{
if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
{
distance = rep2;
}
else
{
distance = rep3;
rep3 = rep2;
}
rep2 = rep1;
}
rep1 = rep0;
rep0 = distance;
}
len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
state.UpdateRep();
}
else
{
rep3 = rep2;
rep2 = rep1;
rep1 = rep0;
len = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
state.UpdateMatch();
uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
if (posSlot >= Base.kStartPosModelIndex)
{
int numDirectBits = (int)((posSlot >> 1) - 1);
rep0 = ((2 | (posSlot & 1)) << numDirectBits);
if (posSlot < Base.kEndPosModelIndex)
{
rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
rep0 - posSlot - 1, m_RangeDecoder, numDirectBits);
}
else
{
rep0 += (m_RangeDecoder.DecodeDirectBits(
numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
}
}
else
{
rep0 = posSlot;
}
}
if (rep0 >= nowPos64 || rep0 >= m_DictionarySizeCheck)
{
if (rep0 == 0xFFFFFFFF)
{
break;
}
throw new DataErrorException();
}
//m_OutWindow.CopyBlock(rep0, len);
OutWindow.GetInstance().CopyBlock(rep0, len);
nowPos64 += len;
}
}
}
//m_OutWindow.Flush();
//m_OutWindow.ReleaseStream();
OutWindow.GetInstance().Flush();
OutWindow.GetInstance().ReleaseStream();
m_RangeDecoder.ReleaseStream();
}
