public void Code(Stream inStream, Stream outStream, Int64 inSize, Int64 outSize, ICodeProgress progress) { if (_outWindow is null) { CreateDictionary(); } _outWindow.Init(outStream); if (outSize > 0) { _outWindow.SetLimit(outSize); } else { _outWindow.SetLimit(Int64.MaxValue - _outWindow._total); } RangeCoder.Decoder rangeDecoder = new RangeCoder.Decoder(); rangeDecoder.Init(inStream); Code(_dictionarySize, _outWindow, rangeDecoder); _outWindow.ReleaseStream(); rangeDecoder.ReleaseStream(); if (!rangeDecoder.IsFinished || (inSize > 0 && rangeDecoder._total != inSize)) { throw new DataErrorException(); } if (_outWindow.HasPending) { throw new DataErrorException(); } _outWindow = null; }
public void Code(Stream inStream, Stream outStream, Int64 inSize, Int64 outSize, ICodeProgress progress) { if (_outWindow is null) { CreateDictionary(); } _outWindow.Init(outStream); if (outSize > 0) { _outWindow.SetLimit(outSize); } else { _outWindow.SetLimit(Int64.MaxValue - _outWindow._total); } RangeCoder.Decoder rangeDecoder = new RangeCoder.Decoder(); rangeDecoder.Init(inStream); Code(_dictionarySize, _outWindow, rangeDecoder); _outWindow.ReleaseStream(); rangeDecoder.ReleaseStream(); _outWindow = null; }
public void Code(Stream inStream, 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); m_OutWindow.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); if (!state.IsCharState()) { b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder, (uint)nowPos64, prevByte, m_OutWindow.GetByte(rep0)); } else { b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte); } m_OutWindow.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)); 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 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck) { if (rep0 == 0xFFFFFFFF) { break; } throw new DataErrorException(); } m_OutWindow.CopyBlock(rep0, len); nowPos64 += len; } } } m_OutWindow.Flush(); m_OutWindow.ReleaseStream(); m_RangeDecoder.ReleaseStream(); }
public void Code(Stream inStream, Stream outStream, long inSize, long outSize, ICodeProgress progress) { Init(inStream, outStream); Base.State state = default(Base.State); state.Init(); uint num = 0u; uint num2 = 0u; uint num3 = 0u; uint num4 = 0u; ulong num5 = 0uL; if (num5 < (ulong)outSize) { if (m_IsMatchDecoders[state.Index << 4].Decode(m_RangeDecoder) != 0) { throw new DataErrorException(); } state.UpdateChar(); byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0u, 0); m_OutWindow.PutByte(b); num5++; } while (num5 < (ulong)outSize) { uint num6 = (uint)((int)num5 & (int)m_PosStateMask); if (m_IsMatchDecoders[(state.Index << 4) + num6].Decode(m_RangeDecoder) == 0) { byte @byte = m_OutWindow.GetByte(0u); byte b2 = state.IsCharState() ? m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)num5, @byte) : m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder, (uint)num5, @byte, m_OutWindow.GetByte(num)); m_OutWindow.PutByte(b2); state.UpdateChar(); num5++; continue; } uint num8; if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1) { if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0) { if (m_IsRep0LongDecoders[(state.Index << 4) + num6].Decode(m_RangeDecoder) == 0) { state.UpdateShortRep(); m_OutWindow.PutByte(m_OutWindow.GetByte(num)); num5++; continue; } } else { uint num7; if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0) { num7 = num2; } else { if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0) { num7 = num3; } else { num7 = num4; num4 = num3; } num3 = num2; } num2 = num; num = num7; } num8 = m_RepLenDecoder.Decode(m_RangeDecoder, num6) + 2; state.UpdateRep(); } else { num4 = num3; num3 = num2; num2 = num; num8 = 2 + m_LenDecoder.Decode(m_RangeDecoder, num6); state.UpdateMatch(); uint num9 = m_PosSlotDecoder[Base.GetLenToPosState(num8)].Decode(m_RangeDecoder); if (num9 >= 4) { int num10 = (int)((num9 >> 1) - 1); num = (2 | (num9 & 1)) << num10; if (num9 < 14) { num += BitTreeDecoder.ReverseDecode(m_PosDecoders, num - num9 - 1, m_RangeDecoder, num10); } else { num += m_RangeDecoder.DecodeDirectBits(num10 - 4) << 4; num += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder); } } else { num = num9; } } if (num >= m_OutWindow.TrainSize + num5 || num >= m_DictionarySizeCheck) { if (num == uint.MaxValue) { break; } throw new DataErrorException(); } m_OutWindow.CopyBlock(num, num8); num5 += num8; } m_OutWindow.Flush(); m_OutWindow.ReleaseStream(); m_RangeDecoder.ReleaseStream(); }