public byte DecodeWithMatchByte(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, byte matchByte)
{
uint num = 1u;
while (true)
{
uint num2 = (uint)(matchByte >> 7 & 1);
matchByte = (byte)(matchByte << 1);
uint num3 = this.m_Decoders[(int)((UIntPtr)((1u + num2 << 8) + num))].Decode(rangeDecoder);
num = (num << 1 | num3);
if (num2 != num3)
{
break;
}
if (num >= 256u)
{
goto IL_6D;
}
}
while (num < 256u)
{
num = (num << 1 | this.m_Decoders[(int)((UIntPtr)num)].Decode(rangeDecoder));
}
IL_6D:
return((byte)num);
}
public byte DecodeWithMatchByte(
SevenZip.Compression.RangeCoder.Decoder rangeDecoder,
uint pos,
byte prevByte,
byte matchByte)
{
return(this.m_Coders[(int)this.GetState(pos, prevByte)].DecodeWithMatchByte(rangeDecoder, matchByte));
}
public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder)
{
uint symbol = 1;
do
{
symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder);
}while (symbol < 0x100);
return((byte)symbol);
}
public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder)
{
uint num = 1;
do
{
num = num << 1 | this.m_Decoders[(int)num].Decode(rangeDecoder);
}while (num < 256U);
return((byte)num);
}
public uint Decode(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, uint posState)
{
if (this.m_Choice.Decode(rangeDecoder) == 0U)
{
return(this.m_LowCoder[(int)posState].Decode(rangeDecoder));
}
uint num = 8;
return(this.m_Choice2.Decode(rangeDecoder) != 0U ? num + 8U + this.m_HighCoder.Decode(rangeDecoder) : num + this.m_MidCoder[(int)posState].Decode(rangeDecoder));
}
public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder)
{
uint num = 1u;
do
{
num = (num << 1 | this.m_Decoders[(int)((UIntPtr)num)].Decode(rangeDecoder));
}while (num < 256u);
return((byte)num);
}
public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder)
{
uint num = 1u;
do
{
num = ((num << 1) | m_Decoders[num].Decode(rangeDecoder));
} while (num < 256);
return((byte)num);
}
public uint Decode(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, uint posState)
{
if (m_Choice.Decode(rangeDecoder) == 0)
{
return(m_LowCoder[posState].Decode(rangeDecoder));
}
uint num = 8u;
if (m_Choice2.Decode(rangeDecoder) == 0)
{
return(num + m_MidCoder[posState].Decode(rangeDecoder));
}
num += 8;
return(num + m_HighCoder.Decode(rangeDecoder));
}
public uint Decode(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, uint posState)
{
if (this.m_Choice.Decode(rangeDecoder) == 0u)
{
return(this.m_LowCoder[(int)((UIntPtr)posState)].Decode(rangeDecoder));
}
uint num = 8u;
if (this.m_Choice2.Decode(rangeDecoder) == 0u)
{
num += this.m_MidCoder[(int)((UIntPtr)posState)].Decode(rangeDecoder);
}
else
{
num += 8u;
num += this.m_HighCoder.Decode(rangeDecoder);
}
return(num);
}
public byte DecodeWithMatchByte(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, byte matchByte)
{
uint symbol = 1;
do
{
uint matchBit = (uint)(matchByte >> 7) & 1;
matchByte <<= 1;
uint bit = m_Decoders[((1 + matchBit) << 8) + symbol].Decode(rangeDecoder);
symbol = (symbol << 1) | bit;
if (matchBit != bit)
{
while (symbol < 0x100)
{
symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder);
}
break;
}
}while (symbol < 0x100);
return((byte)symbol);
}
public byte DecodeWithMatchByte(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, byte matchByte)
{
uint num1 = 1;
do
{
uint num2 = (uint)((int)matchByte >> 7 & 1);
matchByte <<= 1;
uint num3 = this.m_Decoders[(1 + (int)num2 << 8) + (int)num1].Decode(rangeDecoder);
num1 = num1 << 1 | num3;
if ((int)num2 != (int)num3)
{
while (num1 < 256U)
{
num1 = num1 << 1 | this.m_Decoders[(int)num1].Decode(rangeDecoder);
}
break;
}
}while (num1 < 256U);
return((byte)num1);
}
public uint Decode(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, uint posState)
{
if (m_Choice.Decode(rangeDecoder) == 0)
{
return(m_LowCoder[posState].Decode(rangeDecoder));
}
else
{
uint symbol = Base.kNumLowLenSymbols;
if (m_Choice2.Decode(rangeDecoder) == 0)
{
symbol += m_MidCoder[posState].Decode(rangeDecoder);
}
else
{
symbol += Base.kNumMidLenSymbols;
symbol += m_HighCoder.Decode(rangeDecoder);
}
return(symbol);
}
}
public byte DecodeWithMatchByte(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, byte matchByte)
{
uint num = 1u;
do
{
uint num2 = (uint)((matchByte >> 7) & 1);
matchByte = (byte)(matchByte << 1);
uint num3 = m_Decoders[(1 + num2 << 8) + num].Decode(rangeDecoder);
num = ((num << 1) | num3);
if (num2 != num3)
{
while (num < 256)
{
num = ((num << 1) | m_Decoders[num].Decode(rangeDecoder));
}
break;
}
} while (num < 256);
return((byte)num);
}
public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte)
{
return(m_Coders[GetState(pos, prevByte)].DecodeNormal(rangeDecoder));
}
public uint ReverseDecode(Decoder rangeDecoder) {
uint m = 1;
uint symbol = 0;
for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++) {
uint bit = Models[m].Decode(rangeDecoder);
m <<= 1;
m += bit;
symbol |= (bit << bitIndex);
}
return symbol;
}
public uint Decode(Decoder rangeDecoder) {
uint m = 1;
for (int bitIndex = NumBitLevels; bitIndex > 0; bitIndex--)
m = (m << 1) + Models[m].Decode(rangeDecoder);
return m - ((uint)1 << NumBitLevels);
}
public uint Decode(Decoder rangeDecoder)
{
uint newBound = (uint)(rangeDecoder.Range >> kNumBitModelTotalBits) * (uint)Prob;
if (rangeDecoder.Code < newBound)
{
rangeDecoder.Range = newBound;
Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
if (rangeDecoder.Range < Decoder.kTopValue)
{
rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte();
rangeDecoder.Range <<= 8;
}
return 0;
}
else
{
rangeDecoder.Range -= newBound;
rangeDecoder.Code -= newBound;
Prob -= (Prob) >> kNumMoveBits;
if (rangeDecoder.Range < Decoder.kTopValue)
{
rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte();
rangeDecoder.Range <<= 8;
}
return 1;
}
}
public static uint ReverseDecode(BitDecoder[] Models, UInt32 startIndex,
Decoder rangeDecoder, int NumBitLevels) {
uint m = 1;
uint symbol = 0;
for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++) {
uint bit = Models[startIndex + m].Decode(rangeDecoder);
m <<= 1;
m += bit;
symbol |= (bit << bitIndex);
}
return symbol;
}
public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte)
{
return(this.m_Coders[(int)((UIntPtr)this.GetState(pos, prevByte))].DecodeNormal(rangeDecoder));
}
