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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-25 17:53:14 +0100 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-25 17:53:14 +0100 |
| commit | f2902217b38cf2e16e851ae84d61247f8e828180 (patch) | |
| tree | 0156a6db6aa8b4d87bf041ece5cf5229c59fe9de /other-licenses/7zstub/src/CS/7zip/Compress | |
| parent | 917a2c450f08ab4c934c9938319f10a1114272b4 (diff) | |
| download | UXP-f2902217b38cf2e16e851ae84d61247f8e828180.tar UXP-f2902217b38cf2e16e851ae84d61247f8e828180.tar.gz UXP-f2902217b38cf2e16e851ae84d61247f8e828180.tar.lz UXP-f2902217b38cf2e16e851ae84d61247f8e828180.tar.xz UXP-f2902217b38cf2e16e851ae84d61247f8e828180.zip | |
Update the 7z installer stub source to 18.05.
Tag #1022
Diffstat (limited to 'other-licenses/7zstub/src/CS/7zip/Compress')
17 files changed, 4050 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZ/IMatchFinder.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/IMatchFinder.cs new file mode 100644 index 000000000..30fab8650 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/IMatchFinder.cs @@ -0,0 +1,24 @@ +// IMatchFinder.cs
+
+using System;
+
+namespace SevenZip.Compression.LZ
+{
+ interface IInWindowStream
+ {
+ void SetStream(System.IO.Stream inStream);
+ void Init();
+ void ReleaseStream();
+ Byte GetIndexByte(Int32 index);
+ UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit);
+ UInt32 GetNumAvailableBytes();
+ }
+
+ interface IMatchFinder : IInWindowStream
+ {
+ void Create(UInt32 historySize, UInt32 keepAddBufferBefore,
+ UInt32 matchMaxLen, UInt32 keepAddBufferAfter);
+ UInt32 GetMatches(UInt32[] distances);
+ void Skip(UInt32 num);
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzBinTree.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzBinTree.cs new file mode 100644 index 000000000..7a9ca2092 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzBinTree.cs @@ -0,0 +1,367 @@ +// LzBinTree.cs
+
+using System;
+
+namespace SevenZip.Compression.LZ
+{
+ public class BinTree : InWindow, IMatchFinder
+ {
+ UInt32 _cyclicBufferPos;
+ UInt32 _cyclicBufferSize = 0;
+ UInt32 _matchMaxLen;
+
+ UInt32[] _son;
+ UInt32[] _hash;
+
+ UInt32 _cutValue = 0xFF;
+ UInt32 _hashMask;
+ UInt32 _hashSizeSum = 0;
+
+ bool HASH_ARRAY = true;
+
+ const UInt32 kHash2Size = 1 << 10;
+ const UInt32 kHash3Size = 1 << 16;
+ const UInt32 kBT2HashSize = 1 << 16;
+ const UInt32 kStartMaxLen = 1;
+ const UInt32 kHash3Offset = kHash2Size;
+ const UInt32 kEmptyHashValue = 0;
+ const UInt32 kMaxValForNormalize = ((UInt32)1 << 31) - 1;
+
+ UInt32 kNumHashDirectBytes = 0;
+ UInt32 kMinMatchCheck = 4;
+ UInt32 kFixHashSize = kHash2Size + kHash3Size;
+
+ public void SetType(int numHashBytes)
+ {
+ HASH_ARRAY = (numHashBytes > 2);
+ if (HASH_ARRAY)
+ {
+ kNumHashDirectBytes = 0;
+ kMinMatchCheck = 4;
+ kFixHashSize = kHash2Size + kHash3Size;
+ }
+ else
+ {
+ kNumHashDirectBytes = 2;
+ kMinMatchCheck = 2 + 1;
+ kFixHashSize = 0;
+ }
+ }
+
+ public new void SetStream(System.IO.Stream stream) { base.SetStream(stream); }
+ public new void ReleaseStream() { base.ReleaseStream(); }
+
+ public new void Init()
+ {
+ base.Init();
+ for (UInt32 i = 0; i < _hashSizeSum; i++)
+ _hash[i] = kEmptyHashValue;
+ _cyclicBufferPos = 0;
+ ReduceOffsets(-1);
+ }
+
+ public new void MovePos()
+ {
+ if (++_cyclicBufferPos >= _cyclicBufferSize)
+ _cyclicBufferPos = 0;
+ base.MovePos();
+ if (_pos == kMaxValForNormalize)
+ Normalize();
+ }
+
+ public new Byte GetIndexByte(Int32 index) { return base.GetIndexByte(index); }
+
+ public new UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit)
+ { return base.GetMatchLen(index, distance, limit); }
+
+ public new UInt32 GetNumAvailableBytes() { return base.GetNumAvailableBytes(); }
+
+ public void Create(UInt32 historySize, UInt32 keepAddBufferBefore,
+ UInt32 matchMaxLen, UInt32 keepAddBufferAfter)
+ {
+ if (historySize > kMaxValForNormalize - 256)
+ throw new Exception();
+ _cutValue = 16 + (matchMaxLen >> 1);
+
+ UInt32 windowReservSize = (historySize + keepAddBufferBefore +
+ matchMaxLen + keepAddBufferAfter) / 2 + 256;
+
+ base.Create(historySize + keepAddBufferBefore, matchMaxLen + keepAddBufferAfter, windowReservSize);
+
+ _matchMaxLen = matchMaxLen;
+
+ UInt32 cyclicBufferSize = historySize + 1;
+ if (_cyclicBufferSize != cyclicBufferSize)
+ _son = new UInt32[(_cyclicBufferSize = cyclicBufferSize) * 2];
+
+ UInt32 hs = kBT2HashSize;
+
+ if (HASH_ARRAY)
+ {
+ hs = historySize - 1;
+ hs |= (hs >> 1);
+ hs |= (hs >> 2);
+ hs |= (hs >> 4);
+ hs |= (hs >> 8);
+ hs >>= 1;
+ hs |= 0xFFFF;
+ if (hs > (1 << 24))
+ hs >>= 1;
+ _hashMask = hs;
+ hs++;
+ hs += kFixHashSize;
+ }
+ if (hs != _hashSizeSum)
+ _hash = new UInt32[_hashSizeSum = hs];
+ }
+
+ public UInt32 GetMatches(UInt32[] distances)
+ {
+ UInt32 lenLimit;
+ if (_pos + _matchMaxLen <= _streamPos)
+ lenLimit = _matchMaxLen;
+ else
+ {
+ lenLimit = _streamPos - _pos;
+ if (lenLimit < kMinMatchCheck)
+ {
+ MovePos();
+ return 0;
+ }
+ }
+
+ UInt32 offset = 0;
+ UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
+ UInt32 cur = _bufferOffset + _pos;
+ UInt32 maxLen = kStartMaxLen; // to avoid items for len < hashSize;
+ UInt32 hashValue, hash2Value = 0, hash3Value = 0;
+
+ if (HASH_ARRAY)
+ {
+ UInt32 temp = CRC.Table[_bufferBase[cur]] ^ _bufferBase[cur + 1];
+ hash2Value = temp & (kHash2Size - 1);
+ temp ^= ((UInt32)(_bufferBase[cur + 2]) << 8);
+ hash3Value = temp & (kHash3Size - 1);
+ hashValue = (temp ^ (CRC.Table[_bufferBase[cur + 3]] << 5)) & _hashMask;
+ }
+ else
+ hashValue = _bufferBase[cur] ^ ((UInt32)(_bufferBase[cur + 1]) << 8);
+
+ UInt32 curMatch = _hash[kFixHashSize + hashValue];
+ if (HASH_ARRAY)
+ {
+ UInt32 curMatch2 = _hash[hash2Value];
+ UInt32 curMatch3 = _hash[kHash3Offset + hash3Value];
+ _hash[hash2Value] = _pos;
+ _hash[kHash3Offset + hash3Value] = _pos;
+ if (curMatch2 > matchMinPos)
+ if (_bufferBase[_bufferOffset + curMatch2] == _bufferBase[cur])
+ {
+ distances[offset++] = maxLen = 2;
+ distances[offset++] = _pos - curMatch2 - 1;
+ }
+ if (curMatch3 > matchMinPos)
+ if (_bufferBase[_bufferOffset + curMatch3] == _bufferBase[cur])
+ {
+ if (curMatch3 == curMatch2)
+ offset -= 2;
+ distances[offset++] = maxLen = 3;
+ distances[offset++] = _pos - curMatch3 - 1;
+ curMatch2 = curMatch3;
+ }
+ if (offset != 0 && curMatch2 == curMatch)
+ {
+ offset -= 2;
+ maxLen = kStartMaxLen;
+ }
+ }
+
+ _hash[kFixHashSize + hashValue] = _pos;
+
+ UInt32 ptr0 = (_cyclicBufferPos << 1) + 1;
+ UInt32 ptr1 = (_cyclicBufferPos << 1);
+
+ UInt32 len0, len1;
+ len0 = len1 = kNumHashDirectBytes;
+
+ if (kNumHashDirectBytes != 0)
+ {
+ if (curMatch > matchMinPos)
+ {
+ if (_bufferBase[_bufferOffset + curMatch + kNumHashDirectBytes] !=
+ _bufferBase[cur + kNumHashDirectBytes])
+ {
+ distances[offset++] = maxLen = kNumHashDirectBytes;
+ distances[offset++] = _pos - curMatch - 1;
+ }
+ }
+ }
+
+ UInt32 count = _cutValue;
+
+ while(true)
+ {
+ if(curMatch <= matchMinPos || count-- == 0)
+ {
+ _son[ptr0] = _son[ptr1] = kEmptyHashValue;
+ break;
+ }
+ UInt32 delta = _pos - curMatch;
+ UInt32 cyclicPos = ((delta <= _cyclicBufferPos) ?
+ (_cyclicBufferPos - delta) :
+ (_cyclicBufferPos - delta + _cyclicBufferSize)) << 1;
+
+ UInt32 pby1 = _bufferOffset + curMatch;
+ UInt32 len = Math.Min(len0, len1);
+ if (_bufferBase[pby1 + len] == _bufferBase[cur + len])
+ {
+ while(++len != lenLimit)
+ if (_bufferBase[pby1 + len] != _bufferBase[cur + len])
+ break;
+ if (maxLen < len)
+ {
+ distances[offset++] = maxLen = len;
+ distances[offset++] = delta - 1;
+ if (len == lenLimit)
+ {
+ _son[ptr1] = _son[cyclicPos];
+ _son[ptr0] = _son[cyclicPos + 1];
+ break;
+ }
+ }
+ }
+ if (_bufferBase[pby1 + len] < _bufferBase[cur + len])
+ {
+ _son[ptr1] = curMatch;
+ ptr1 = cyclicPos + 1;
+ curMatch = _son[ptr1];
+ len1 = len;
+ }
+ else
+ {
+ _son[ptr0] = curMatch;
+ ptr0 = cyclicPos;
+ curMatch = _son[ptr0];
+ len0 = len;
+ }
+ }
+ MovePos();
+ return offset;
+ }
+
+ public void Skip(UInt32 num)
+ {
+ do
+ {
+ UInt32 lenLimit;
+ if (_pos + _matchMaxLen <= _streamPos)
+ lenLimit = _matchMaxLen;
+ else
+ {
+ lenLimit = _streamPos - _pos;
+ if (lenLimit < kMinMatchCheck)
+ {
+ MovePos();
+ continue;
+ }
+ }
+
+ UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
+ UInt32 cur = _bufferOffset + _pos;
+
+ UInt32 hashValue;
+
+ if (HASH_ARRAY)
+ {
+ UInt32 temp = CRC.Table[_bufferBase[cur]] ^ _bufferBase[cur + 1];
+ UInt32 hash2Value = temp & (kHash2Size - 1);
+ _hash[hash2Value] = _pos;
+ temp ^= ((UInt32)(_bufferBase[cur + 2]) << 8);
+ UInt32 hash3Value = temp & (kHash3Size - 1);
+ _hash[kHash3Offset + hash3Value] = _pos;
+ hashValue = (temp ^ (CRC.Table[_bufferBase[cur + 3]] << 5)) & _hashMask;
+ }
+ else
+ hashValue = _bufferBase[cur] ^ ((UInt32)(_bufferBase[cur + 1]) << 8);
+
+ UInt32 curMatch = _hash[kFixHashSize + hashValue];
+ _hash[kFixHashSize + hashValue] = _pos;
+
+ UInt32 ptr0 = (_cyclicBufferPos << 1) + 1;
+ UInt32 ptr1 = (_cyclicBufferPos << 1);
+
+ UInt32 len0, len1;
+ len0 = len1 = kNumHashDirectBytes;
+
+ UInt32 count = _cutValue;
+ while (true)
+ {
+ if (curMatch <= matchMinPos || count-- == 0)
+ {
+ _son[ptr0] = _son[ptr1] = kEmptyHashValue;
+ break;
+ }
+
+ UInt32 delta = _pos - curMatch;
+ UInt32 cyclicPos = ((delta <= _cyclicBufferPos) ?
+ (_cyclicBufferPos - delta) :
+ (_cyclicBufferPos - delta + _cyclicBufferSize)) << 1;
+
+ UInt32 pby1 = _bufferOffset + curMatch;
+ UInt32 len = Math.Min(len0, len1);
+ if (_bufferBase[pby1 + len] == _bufferBase[cur + len])
+ {
+ while (++len != lenLimit)
+ if (_bufferBase[pby1 + len] != _bufferBase[cur + len])
+ break;
+ if (len == lenLimit)
+ {
+ _son[ptr1] = _son[cyclicPos];
+ _son[ptr0] = _son[cyclicPos + 1];
+ break;
+ }
+ }
+ if (_bufferBase[pby1 + len] < _bufferBase[cur + len])
+ {
+ _son[ptr1] = curMatch;
+ ptr1 = cyclicPos + 1;
+ curMatch = _son[ptr1];
+ len1 = len;
+ }
+ else
+ {
+ _son[ptr0] = curMatch;
+ ptr0 = cyclicPos;
+ curMatch = _son[ptr0];
+ len0 = len;
+ }
+ }
+ MovePos();
+ }
+ while (--num != 0);
+ }
+
+ void NormalizeLinks(UInt32[] items, UInt32 numItems, UInt32 subValue)
+ {
+ for (UInt32 i = 0; i < numItems; i++)
+ {
+ UInt32 value = items[i];
+ if (value <= subValue)
+ value = kEmptyHashValue;
+ else
+ value -= subValue;
+ items[i] = value;
+ }
+ }
+
+ void Normalize()
+ {
+ UInt32 subValue = _pos - _cyclicBufferSize;
+ NormalizeLinks(_son, _cyclicBufferSize * 2, subValue);
+ NormalizeLinks(_hash, _hashSizeSum, subValue);
+ ReduceOffsets((Int32)subValue);
+ }
+
+ public void SetCutValue(UInt32 cutValue) { _cutValue = cutValue; }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzInWindow.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzInWindow.cs new file mode 100644 index 000000000..f1974cef5 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzInWindow.cs @@ -0,0 +1,132 @@ +// LzInWindow.cs
+
+using System;
+
+namespace SevenZip.Compression.LZ
+{
+ public class InWindow
+ {
+ public Byte[] _bufferBase = null; // pointer to buffer with data
+ System.IO.Stream _stream;
+ UInt32 _posLimit; // offset (from _buffer) of first byte when new block reading must be done
+ bool _streamEndWasReached; // if (true) then _streamPos shows real end of stream
+
+ UInt32 _pointerToLastSafePosition;
+
+ public UInt32 _bufferOffset;
+
+ public UInt32 _blockSize; // Size of Allocated memory block
+ public UInt32 _pos; // offset (from _buffer) of curent byte
+ UInt32 _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos
+ UInt32 _keepSizeAfter; // how many BYTEs must be kept buffer after _pos
+ public UInt32 _streamPos; // offset (from _buffer) of first not read byte from Stream
+
+ public void MoveBlock()
+ {
+ UInt32 offset = (UInt32)(_bufferOffset) + _pos - _keepSizeBefore;
+ // we need one additional byte, since MovePos moves on 1 byte.
+ if (offset > 0)
+ offset--;
+
+ UInt32 numBytes = (UInt32)(_bufferOffset) + _streamPos - offset;
+
+ // check negative offset ????
+ for (UInt32 i = 0; i < numBytes; i++)
+ _bufferBase[i] = _bufferBase[offset + i];
+ _bufferOffset -= offset;
+ }
+
+ public virtual void ReadBlock()
+ {
+ if (_streamEndWasReached)
+ return;
+ while (true)
+ {
+ int size = (int)((0 - _bufferOffset) + _blockSize - _streamPos);
+ if (size == 0)
+ return;
+ int numReadBytes = _stream.Read(_bufferBase, (int)(_bufferOffset + _streamPos), size);
+ if (numReadBytes == 0)
+ {
+ _posLimit = _streamPos;
+ UInt32 pointerToPostion = _bufferOffset + _posLimit;
+ if (pointerToPostion > _pointerToLastSafePosition)
+ _posLimit = (UInt32)(_pointerToLastSafePosition - _bufferOffset);
+
+ _streamEndWasReached = true;
+ return;
+ }
+ _streamPos += (UInt32)numReadBytes;
+ if (_streamPos >= _pos + _keepSizeAfter)
+ _posLimit = _streamPos - _keepSizeAfter;
+ }
+ }
+
+ void Free() { _bufferBase = null; }
+
+ public void Create(UInt32 keepSizeBefore, UInt32 keepSizeAfter, UInt32 keepSizeReserv)
+ {
+ _keepSizeBefore = keepSizeBefore;
+ _keepSizeAfter = keepSizeAfter;
+ UInt32 blockSize = keepSizeBefore + keepSizeAfter + keepSizeReserv;
+ if (_bufferBase == null || _blockSize != blockSize)
+ {
+ Free();
+ _blockSize = blockSize;
+ _bufferBase = new Byte[_blockSize];
+ }
+ _pointerToLastSafePosition = _blockSize - keepSizeAfter;
+ }
+
+ public void SetStream(System.IO.Stream stream) { _stream = stream; }
+ public void ReleaseStream() { _stream = null; }
+
+ public void Init()
+ {
+ _bufferOffset = 0;
+ _pos = 0;
+ _streamPos = 0;
+ _streamEndWasReached = false;
+ ReadBlock();
+ }
+
+ public void MovePos()
+ {
+ _pos++;
+ if (_pos > _posLimit)
+ {
+ UInt32 pointerToPostion = _bufferOffset + _pos;
+ if (pointerToPostion > _pointerToLastSafePosition)
+ MoveBlock();
+ ReadBlock();
+ }
+ }
+
+ public Byte GetIndexByte(Int32 index) { return _bufferBase[_bufferOffset + _pos + index]; }
+
+ // index + limit have not to exceed _keepSizeAfter;
+ public UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit)
+ {
+ if (_streamEndWasReached)
+ if ((_pos + index) + limit > _streamPos)
+ limit = _streamPos - (UInt32)(_pos + index);
+ distance++;
+ // Byte *pby = _buffer + (size_t)_pos + index;
+ UInt32 pby = _bufferOffset + _pos + (UInt32)index;
+
+ UInt32 i;
+ for (i = 0; i < limit && _bufferBase[pby + i] == _bufferBase[pby + i - distance]; i++);
+ return i;
+ }
+
+ public UInt32 GetNumAvailableBytes() { return _streamPos - _pos; }
+
+ public void ReduceOffsets(Int32 subValue)
+ {
+ _bufferOffset += (UInt32)subValue;
+ _posLimit -= (UInt32)subValue;
+ _pos -= (UInt32)subValue;
+ _streamPos -= (UInt32)subValue;
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzOutWindow.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzOutWindow.cs new file mode 100644 index 000000000..84914f0d9 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZ/LzOutWindow.cs @@ -0,0 +1,110 @@ +// LzOutWindow.cs
+
+namespace SevenZip.Compression.LZ
+{
+ public class OutWindow
+ {
+ byte[] _buffer = null;
+ uint _pos;
+ uint _windowSize = 0;
+ uint _streamPos;
+ System.IO.Stream _stream;
+
+ public uint TrainSize = 0;
+
+ public void Create(uint windowSize)
+ {
+ if (_windowSize != windowSize)
+ {
+ // System.GC.Collect();
+ _buffer = new byte[windowSize];
+ }
+ _windowSize = windowSize;
+ _pos = 0;
+ _streamPos = 0;
+ }
+
+ public void Init(System.IO.Stream stream, bool solid)
+ {
+ ReleaseStream();
+ _stream = stream;
+ if (!solid)
+ {
+ _streamPos = 0;
+ _pos = 0;
+ TrainSize = 0;
+ }
+ }
+
+ public bool Train(System.IO.Stream stream)
+ {
+ long len = stream.Length;
+ uint size = (len < _windowSize) ? (uint)len : _windowSize;
+ TrainSize = size;
+ stream.Position = len - size;
+ _streamPos = _pos = 0;
+ while (size > 0)
+ {
+ uint curSize = _windowSize - _pos;
+ if (size < curSize)
+ curSize = size;
+ int numReadBytes = stream.Read(_buffer, (int)_pos, (int)curSize);
+ if (numReadBytes == 0)
+ return false;
+ size -= (uint)numReadBytes;
+ _pos += (uint)numReadBytes;
+ _streamPos += (uint)numReadBytes;
+ if (_pos == _windowSize)
+ _streamPos = _pos = 0;
+ }
+ return true;
+ }
+
+ public void ReleaseStream()
+ {
+ Flush();
+ _stream = null;
+ }
+
+ public void Flush()
+ {
+ uint size = _pos - _streamPos;
+ if (size == 0)
+ return;
+ _stream.Write(_buffer, (int)_streamPos, (int)size);
+ if (_pos >= _windowSize)
+ _pos = 0;
+ _streamPos = _pos;
+ }
+
+ public void CopyBlock(uint distance, uint len)
+ {
+ uint pos = _pos - distance - 1;
+ if (pos >= _windowSize)
+ pos += _windowSize;
+ for (; len > 0; len--)
+ {
+ if (pos >= _windowSize)
+ pos = 0;
+ _buffer[_pos++] = _buffer[pos++];
+ if (_pos >= _windowSize)
+ Flush();
+ }
+ }
+
+ public void PutByte(byte b)
+ {
+ _buffer[_pos++] = b;
+ if (_pos >= _windowSize)
+ Flush();
+ }
+
+ public byte GetByte(uint distance)
+ {
+ uint pos = _pos - distance - 1;
+ if (pos >= _windowSize)
+ pos += _windowSize;
+ return _buffer[pos];
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaBase.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaBase.cs new file mode 100644 index 000000000..8447a2a0f --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaBase.cs @@ -0,0 +1,76 @@ +// LzmaBase.cs
+
+namespace SevenZip.Compression.LZMA
+{
+ internal abstract class Base
+ {
+ public const uint kNumRepDistances = 4;
+ public const uint kNumStates = 12;
+
+ // static byte []kLiteralNextStates = {0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5};
+ // static byte []kMatchNextStates = {7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10};
+ // static byte []kRepNextStates = {8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11};
+ // static byte []kShortRepNextStates = {9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11};
+
+ public struct State
+ {
+ public uint Index;
+ public void Init() { Index = 0; }
+ public void UpdateChar()
+ {
+ if (Index < 4) Index = 0;
+ else if (Index < 10) Index -= 3;
+ else Index -= 6;
+ }
+ public void UpdateMatch() { Index = (uint)(Index < 7 ? 7 : 10); }
+ public void UpdateRep() { Index = (uint)(Index < 7 ? 8 : 11); }
+ public void UpdateShortRep() { Index = (uint)(Index < 7 ? 9 : 11); }
+ public bool IsCharState() { return Index < 7; }
+ }
+
+ public const int kNumPosSlotBits = 6;
+ public const int kDicLogSizeMin = 0;
+ // public const int kDicLogSizeMax = 30;
+ // public const uint kDistTableSizeMax = kDicLogSizeMax * 2;
+
+ public const int kNumLenToPosStatesBits = 2; // it's for speed optimization
+ public const uint kNumLenToPosStates = 1 << kNumLenToPosStatesBits;
+
+ public const uint kMatchMinLen = 2;
+
+ public static uint GetLenToPosState(uint len)
+ {
+ len -= kMatchMinLen;
+ if (len < kNumLenToPosStates)
+ return len;
+ return (uint)(kNumLenToPosStates - 1);
+ }
+
+ public const int kNumAlignBits = 4;
+ public const uint kAlignTableSize = 1 << kNumAlignBits;
+ public const uint kAlignMask = (kAlignTableSize - 1);
+
+ public const uint kStartPosModelIndex = 4;
+ public const uint kEndPosModelIndex = 14;
+ public const uint kNumPosModels = kEndPosModelIndex - kStartPosModelIndex;
+
+ public const uint kNumFullDistances = 1 << ((int)kEndPosModelIndex / 2);
+
+ public const uint kNumLitPosStatesBitsEncodingMax = 4;
+ public const uint kNumLitContextBitsMax = 8;
+
+ public const int kNumPosStatesBitsMax = 4;
+ public const uint kNumPosStatesMax = (1 << kNumPosStatesBitsMax);
+ public const int kNumPosStatesBitsEncodingMax = 4;
+ public const uint kNumPosStatesEncodingMax = (1 << kNumPosStatesBitsEncodingMax);
+
+ public const int kNumLowLenBits = 3;
+ public const int kNumMidLenBits = 3;
+ public const int kNumHighLenBits = 8;
+ public const uint kNumLowLenSymbols = 1 << kNumLowLenBits;
+ public const uint kNumMidLenSymbols = 1 << kNumMidLenBits;
+ public const uint kNumLenSymbols = kNumLowLenSymbols + kNumMidLenSymbols +
+ (1 << kNumHighLenBits);
+ public const uint kMatchMaxLen = kMatchMinLen + kNumLenSymbols - 1;
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaDecoder.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaDecoder.cs new file mode 100644 index 000000000..00bfe6380 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaDecoder.cs @@ -0,0 +1,398 @@ +// LzmaDecoder.cs
+
+using System;
+
+namespace SevenZip.Compression.LZMA
+{
+ using RangeCoder;
+
+ public class Decoder : ICoder, ISetDecoderProperties // ,System.IO.Stream
+ {
+ class LenDecoder
+ {
+ BitDecoder m_Choice = new BitDecoder();
+ BitDecoder m_Choice2 = new BitDecoder();
+ BitTreeDecoder[] m_LowCoder = new BitTreeDecoder[Base.kNumPosStatesMax];
+ BitTreeDecoder[] m_MidCoder = new BitTreeDecoder[Base.kNumPosStatesMax];
+ BitTreeDecoder m_HighCoder = new BitTreeDecoder(Base.kNumHighLenBits);
+ uint m_NumPosStates = 0;
+
+ public void Create(uint numPosStates)
+ {
+ for (uint posState = m_NumPosStates; posState < numPosStates; posState++)
+ {
+ m_LowCoder[posState] = new BitTreeDecoder(Base.kNumLowLenBits);
+ m_MidCoder[posState] = new BitTreeDecoder(Base.kNumMidLenBits);
+ }
+ m_NumPosStates = numPosStates;
+ }
+
+ public void Init()
+ {
+ m_Choice.Init();
+ for (uint posState = 0; posState < m_NumPosStates; posState++)
+ {
+ m_LowCoder[posState].Init();
+ m_MidCoder[posState].Init();
+ }
+ m_Choice2.Init();
+ m_HighCoder.Init();
+ }
+
+ public uint Decode(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;
+ }
+ }
+ }
+
+ class LiteralDecoder
+ {
+ struct Decoder2
+ {
+ BitDecoder[] m_Decoders;
+ public void Create() { m_Decoders = new BitDecoder[0x300]; }
+ public void Init() { for (int i = 0; i < 0x300; i++) m_Decoders[i].Init(); }
+
+ public byte DecodeNormal(RangeCoder.Decoder rangeDecoder)
+ {
+ uint symbol = 1;
+ do
+ symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder);
+ while (symbol < 0x100);
+ return (byte)symbol;
+ }
+
+ public byte DecodeWithMatchByte(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;
+ }
+ }
+
+ Decoder2[] m_Coders;
+ int m_NumPrevBits;
+ int m_NumPosBits;
+ uint m_PosMask;
+
+ public void Create(int numPosBits, int numPrevBits)
+ {
+ if (m_Coders != null && m_NumPrevBits == numPrevBits &&
+ m_NumPosBits == numPosBits)
+ return;
+ m_NumPosBits = numPosBits;
+ m_PosMask = ((uint)1 << numPosBits) - 1;
+ m_NumPrevBits = numPrevBits;
+ uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits);
+ m_Coders = new Decoder2[numStates];
+ for (uint i = 0; i < numStates; i++)
+ m_Coders[i].Create();
+ }
+
+ public void Init()
+ {
+ uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits);
+ for (uint i = 0; i < numStates; i++)
+ m_Coders[i].Init();
+ }
+
+ uint GetState(uint pos, byte prevByte)
+ { return ((pos & m_PosMask) << m_NumPrevBits) + (uint)(prevByte >> (8 - m_NumPrevBits)); }
+
+ public byte DecodeNormal(RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte)
+ { return m_Coders[GetState(pos, prevByte)].DecodeNormal(rangeDecoder); }
+
+ public byte DecodeWithMatchByte(RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte, byte matchByte)
+ { return m_Coders[GetState(pos, prevByte)].DecodeWithMatchByte(rangeDecoder, matchByte); }
+ };
+
+ LZ.OutWindow m_OutWindow = new LZ.OutWindow();
+ RangeCoder.Decoder m_RangeDecoder = new RangeCoder.Decoder();
+
+ BitDecoder[] m_IsMatchDecoders = new BitDecoder[Base.kNumStates << Base.kNumPosStatesBitsMax];
+ BitDecoder[] m_IsRepDecoders = new BitDecoder[Base.kNumStates];
+ BitDecoder[] m_IsRepG0Decoders = new BitDecoder[Base.kNumStates];
+ BitDecoder[] m_IsRepG1Decoders = new BitDecoder[Base.kNumStates];
+ BitDecoder[] m_IsRepG2Decoders = new BitDecoder[Base.kNumStates];
+ BitDecoder[] m_IsRep0LongDecoders = new BitDecoder[Base.kNumStates << Base.kNumPosStatesBitsMax];
+
+ BitTreeDecoder[] m_PosSlotDecoder = new BitTreeDecoder[Base.kNumLenToPosStates];
+ BitDecoder[] m_PosDecoders = new BitDecoder[Base.kNumFullDistances - Base.kEndPosModelIndex];
+
+ BitTreeDecoder m_PosAlignDecoder = new BitTreeDecoder(Base.kNumAlignBits);
+
+ LenDecoder m_LenDecoder = new LenDecoder();
+ LenDecoder m_RepLenDecoder = new LenDecoder();
+
+ LiteralDecoder m_LiteralDecoder = new LiteralDecoder();
+
+ uint m_DictionarySize;
+ uint m_DictionarySizeCheck;
+
+ uint m_PosStateMask;
+
+ public Decoder()
+ {
+ m_DictionarySize = 0xFFFFFFFF;
+ for (int i = 0; i < Base.kNumLenToPosStates; i++)
+ m_PosSlotDecoder[i] = new BitTreeDecoder(Base.kNumPosSlotBits);
+ }
+
+ 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);
+ }
+ }
+
+ void SetLiteralProperties(int lp, int lc)
+ {
+ if (lp > 8)
+ throw new InvalidParamException();
+ if (lc > 8)
+ throw new InvalidParamException();
+ m_LiteralDecoder.Create(lp, lc);
+ }
+
+ void SetPosBitsProperties(int pb)
+ {
+ if (pb > Base.kNumPosStatesBitsMax)
+ throw new InvalidParamException();
+ uint numPosStates = (uint)1 << pb;
+ m_LenDecoder.Create(numPosStates);
+ m_RepLenDecoder.Create(numPosStates);
+ m_PosStateMask = numPosStates - 1;
+ }
+
+ bool _solid = false;
+ void Init(System.IO.Stream inStream, System.IO.Stream outStream)
+ {
+ m_RangeDecoder.Init(inStream);
+ m_OutWindow.Init(outStream, _solid);
+
+ 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();
+ 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);
+ 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 SetDecoderProperties(byte[] properties)
+ {
+ if (properties.Length < 5)
+ throw new InvalidParamException();
+ int lc = properties[0] % 9;
+ int remainder = properties[0] / 9;
+ int lp = remainder % 5;
+ int pb = remainder / 5;
+ if (pb > Base.kNumPosStatesBitsMax)
+ throw new InvalidParamException();
+ UInt32 dictionarySize = 0;
+ for (int i = 0; i < 4; i++)
+ dictionarySize += ((UInt32)(properties[1 + i])) << (i * 8);
+ SetDictionarySize(dictionarySize);
+ SetLiteralProperties(lp, lc);
+ SetPosBitsProperties(pb);
+ }
+
+ public bool Train(System.IO.Stream stream)
+ {
+ _solid = true;
+ return m_OutWindow.Train(stream);
+ }
+
+ /*
+ public override bool CanRead { get { return true; }}
+ public override bool CanWrite { get { return true; }}
+ public override bool CanSeek { get { return true; }}
+ public override long Length { get { return 0; }}
+ public override long Position
+ {
+ get { return 0; }
+ set { }
+ }
+ public override void Flush() { }
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ return 0;
+ }
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ }
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ return 0;
+ }
+ public override void SetLength(long value) {}
+ */
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaEncoder.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaEncoder.cs new file mode 100644 index 000000000..6dc2708bd --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LZMA/LzmaEncoder.cs @@ -0,0 +1,1480 @@ +// LzmaEncoder.cs
+
+using System;
+
+namespace SevenZip.Compression.LZMA
+{
+ using RangeCoder;
+
+ public class Encoder : ICoder, ISetCoderProperties, IWriteCoderProperties
+ {
+ enum EMatchFinderType
+ {
+ BT2,
+ BT4,
+ };
+
+ const UInt32 kIfinityPrice = 0xFFFFFFF;
+
+ static Byte[] g_FastPos = new Byte[1 << 11];
+
+ static Encoder()
+ {
+ const Byte kFastSlots = 22;
+ int c = 2;
+ g_FastPos[0] = 0;
+ g_FastPos[1] = 1;
+ for (Byte slotFast = 2; slotFast < kFastSlots; slotFast++)
+ {
+ UInt32 k = ((UInt32)1 << ((slotFast >> 1) - 1));
+ for (UInt32 j = 0; j < k; j++, c++)
+ g_FastPos[c] = slotFast;
+ }
+ }
+
+ static UInt32 GetPosSlot(UInt32 pos)
+ {
+ if (pos < (1 << 11))
+ return g_FastPos[pos];
+ if (pos < (1 << 21))
+ return (UInt32)(g_FastPos[pos >> 10] + 20);
+ return (UInt32)(g_FastPos[pos >> 20] + 40);
+ }
+
+ static UInt32 GetPosSlot2(UInt32 pos)
+ {
+ if (pos < (1 << 17))
+ return (UInt32)(g_FastPos[pos >> 6] + 12);
+ if (pos < (1 << 27))
+ return (UInt32)(g_FastPos[pos >> 16] + 32);
+ return (UInt32)(g_FastPos[pos >> 26] + 52);
+ }
+
+ Base.State _state = new Base.State();
+ Byte _previousByte;
+ UInt32[] _repDistances = new UInt32[Base.kNumRepDistances];
+
+ void BaseInit()
+ {
+ _state.Init();
+ _previousByte = 0;
+ for (UInt32 i = 0; i < Base.kNumRepDistances; i++)
+ _repDistances[i] = 0;
+ }
+
+ const int kDefaultDictionaryLogSize = 22;
+ const UInt32 kNumFastBytesDefault = 0x20;
+
+ class LiteralEncoder
+ {
+ public struct Encoder2
+ {
+ BitEncoder[] m_Encoders;
+
+ public void Create() { m_Encoders = new BitEncoder[0x300]; }
+
+ public void Init() { for (int i = 0; i < 0x300; i++) m_Encoders[i].Init(); }
+
+ public void Encode(RangeCoder.Encoder rangeEncoder, byte symbol)
+ {
+ uint context = 1;
+ for (int i = 7; i >= 0; i--)
+ {
+ uint bit = (uint)((symbol >> i) & 1);
+ m_Encoders[context].Encode(rangeEncoder, bit);
+ context = (context << 1) | bit;
+ }
+ }
+
+ public void EncodeMatched(RangeCoder.Encoder rangeEncoder, byte matchByte, byte symbol)
+ {
+ uint context = 1;
+ bool same = true;
+ for (int i = 7; i >= 0; i--)
+ {
+ uint bit = (uint)((symbol >> i) & 1);
+ uint state = context;
+ if (same)
+ {
+ uint matchBit = (uint)((matchByte >> i) & 1);
+ state += ((1 + matchBit) << 8);
+ same = (matchBit == bit);
+ }
+ m_Encoders[state].Encode(rangeEncoder, bit);
+ context = (context << 1) | bit;
+ }
+ }
+
+ public uint GetPrice(bool matchMode, byte matchByte, byte symbol)
+ {
+ uint price = 0;
+ uint context = 1;
+ int i = 7;
+ if (matchMode)
+ {
+ for (; i >= 0; i--)
+ {
+ uint matchBit = (uint)(matchByte >> i) & 1;
+ uint bit = (uint)(symbol >> i) & 1;
+ price += m_Encoders[((1 + matchBit) << 8) + context].GetPrice(bit);
+ context = (context << 1) | bit;
+ if (matchBit != bit)
+ {
+ i--;
+ break;
+ }
+ }
+ }
+ for (; i >= 0; i--)
+ {
+ uint bit = (uint)(symbol >> i) & 1;
+ price += m_Encoders[context].GetPrice(bit);
+ context = (context << 1) | bit;
+ }
+ return price;
+ }
+ }
+
+ Encoder2[] m_Coders;
+ int m_NumPrevBits;
+ int m_NumPosBits;
+ uint m_PosMask;
+
+ public void Create(int numPosBits, int numPrevBits)
+ {
+ if (m_Coders != null && m_NumPrevBits == numPrevBits && m_NumPosBits == numPosBits)
+ return;
+ m_NumPosBits = numPosBits;
+ m_PosMask = ((uint)1 << numPosBits) - 1;
+ m_NumPrevBits = numPrevBits;
+ uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits);
+ m_Coders = new Encoder2[numStates];
+ for (uint i = 0; i < numStates; i++)
+ m_Coders[i].Create();
+ }
+
+ public void Init()
+ {
+ uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits);
+ for (uint i = 0; i < numStates; i++)
+ m_Coders[i].Init();
+ }
+
+ public Encoder2 GetSubCoder(UInt32 pos, Byte prevByte)
+ { return m_Coders[((pos & m_PosMask) << m_NumPrevBits) + (uint)(prevByte >> (8 - m_NumPrevBits))]; }
+ }
+
+ class LenEncoder
+ {
+ RangeCoder.BitEncoder _choice = new RangeCoder.BitEncoder();
+ RangeCoder.BitEncoder _choice2 = new RangeCoder.BitEncoder();
+ RangeCoder.BitTreeEncoder[] _lowCoder = new RangeCoder.BitTreeEncoder[Base.kNumPosStatesEncodingMax];
+ RangeCoder.BitTreeEncoder[] _midCoder = new RangeCoder.BitTreeEncoder[Base.kNumPosStatesEncodingMax];
+ RangeCoder.BitTreeEncoder _highCoder = new RangeCoder.BitTreeEncoder(Base.kNumHighLenBits);
+
+ public LenEncoder()
+ {
+ for (UInt32 posState = 0; posState < Base.kNumPosStatesEncodingMax; posState++)
+ {
+ _lowCoder[posState] = new RangeCoder.BitTreeEncoder(Base.kNumLowLenBits);
+ _midCoder[posState] = new RangeCoder.BitTreeEncoder(Base.kNumMidLenBits);
+ }
+ }
+
+ public void Init(UInt32 numPosStates)
+ {
+ _choice.Init();
+ _choice2.Init();
+ for (UInt32 posState = 0; posState < numPosStates; posState++)
+ {
+ _lowCoder[posState].Init();
+ _midCoder[posState].Init();
+ }
+ _highCoder.Init();
+ }
+
+ public void Encode(RangeCoder.Encoder rangeEncoder, UInt32 symbol, UInt32 posState)
+ {
+ if (symbol < Base.kNumLowLenSymbols)
+ {
+ _choice.Encode(rangeEncoder, 0);
+ _lowCoder[posState].Encode(rangeEncoder, symbol);
+ }
+ else
+ {
+ symbol -= Base.kNumLowLenSymbols;
+ _choice.Encode(rangeEncoder, 1);
+ if (symbol < Base.kNumMidLenSymbols)
+ {
+ _choice2.Encode(rangeEncoder, 0);
+ _midCoder[posState].Encode(rangeEncoder, symbol);
+ }
+ else
+ {
+ _choice2.Encode(rangeEncoder, 1);
+ _highCoder.Encode(rangeEncoder, symbol - Base.kNumMidLenSymbols);
+ }
+ }
+ }
+
+ public void SetPrices(UInt32 posState, UInt32 numSymbols, UInt32[] prices, UInt32 st)
+ {
+ UInt32 a0 = _choice.GetPrice0();
+ UInt32 a1 = _choice.GetPrice1();
+ UInt32 b0 = a1 + _choice2.GetPrice0();
+ UInt32 b1 = a1 + _choice2.GetPrice1();
+ UInt32 i = 0;
+ for (i = 0; i < Base.kNumLowLenSymbols; i++)
+ {
+ if (i >= numSymbols)
+ return;
+ prices[st + i] = a0 + _lowCoder[posState].GetPrice(i);
+ }
+ for (; i < Base.kNumLowLenSymbols + Base.kNumMidLenSymbols; i++)
+ {
+ if (i >= numSymbols)
+ return;
+ prices[st + i] = b0 + _midCoder[posState].GetPrice(i - Base.kNumLowLenSymbols);
+ }
+ for (; i < numSymbols; i++)
+ prices[st + i] = b1 + _highCoder.GetPrice(i - Base.kNumLowLenSymbols - Base.kNumMidLenSymbols);
+ }
+ };
+
+ const UInt32 kNumLenSpecSymbols = Base.kNumLowLenSymbols + Base.kNumMidLenSymbols;
+
+ class LenPriceTableEncoder : LenEncoder
+ {
+ UInt32[] _prices = new UInt32[Base.kNumLenSymbols << Base.kNumPosStatesBitsEncodingMax];
+ UInt32 _tableSize;
+ UInt32[] _counters = new UInt32[Base.kNumPosStatesEncodingMax];
+
+ public void SetTableSize(UInt32 tableSize) { _tableSize = tableSize; }
+
+ public UInt32 GetPrice(UInt32 symbol, UInt32 posState)
+ {
+ return _prices[posState * Base.kNumLenSymbols + symbol];
+ }
+
+ void UpdateTable(UInt32 posState)
+ {
+ SetPrices(posState, _tableSize, _prices, posState * Base.kNumLenSymbols);
+ _counters[posState] = _tableSize;
+ }
+
+ public void UpdateTables(UInt32 numPosStates)
+ {
+ for (UInt32 posState = 0; posState < numPosStates; posState++)
+ UpdateTable(posState);
+ }
+
+ public new void Encode(RangeCoder.Encoder rangeEncoder, UInt32 symbol, UInt32 posState)
+ {
+ base.Encode(rangeEncoder, symbol, posState);
+ if (--_counters[posState] == 0)
+ UpdateTable(posState);
+ }
+ }
+
+ const UInt32 kNumOpts = 1 << 12;
+ class Optimal
+ {
+ public Base.State State;
+
+ public bool Prev1IsChar;
+ public bool Prev2;
+
+ public UInt32 PosPrev2;
+ public UInt32 BackPrev2;
+
+ public UInt32 Price;
+ public UInt32 PosPrev;
+ public UInt32 BackPrev;
+
+ public UInt32 Backs0;
+ public UInt32 Backs1;
+ public UInt32 Backs2;
+ public UInt32 Backs3;
+
+ public void MakeAsChar() { BackPrev = 0xFFFFFFFF; Prev1IsChar = false; }
+ public void MakeAsShortRep() { BackPrev = 0; ; Prev1IsChar = false; }
+ public bool IsShortRep() { return (BackPrev == 0); }
+ };
+ Optimal[] _optimum = new Optimal[kNumOpts];
+ LZ.IMatchFinder _matchFinder = null;
+ RangeCoder.Encoder _rangeEncoder = new RangeCoder.Encoder();
+
+ RangeCoder.BitEncoder[] _isMatch = new RangeCoder.BitEncoder[Base.kNumStates << Base.kNumPosStatesBitsMax];
+ RangeCoder.BitEncoder[] _isRep = new RangeCoder.BitEncoder[Base.kNumStates];
+ RangeCoder.BitEncoder[] _isRepG0 = new RangeCoder.BitEncoder[Base.kNumStates];
+ RangeCoder.BitEncoder[] _isRepG1 = new RangeCoder.BitEncoder[Base.kNumStates];
+ RangeCoder.BitEncoder[] _isRepG2 = new RangeCoder.BitEncoder[Base.kNumStates];
+ RangeCoder.BitEncoder[] _isRep0Long = new RangeCoder.BitEncoder[Base.kNumStates << Base.kNumPosStatesBitsMax];
+
+ RangeCoder.BitTreeEncoder[] _posSlotEncoder = new RangeCoder.BitTreeEncoder[Base.kNumLenToPosStates];
+
+ RangeCoder.BitEncoder[] _posEncoders = new RangeCoder.BitEncoder[Base.kNumFullDistances - Base.kEndPosModelIndex];
+ RangeCoder.BitTreeEncoder _posAlignEncoder = new RangeCoder.BitTreeEncoder(Base.kNumAlignBits);
+
+ LenPriceTableEncoder _lenEncoder = new LenPriceTableEncoder();
+ LenPriceTableEncoder _repMatchLenEncoder = new LenPriceTableEncoder();
+
+ LiteralEncoder _literalEncoder = new LiteralEncoder();
+
+ UInt32[] _matchDistances = new UInt32[Base.kMatchMaxLen * 2 + 2];
+
+ UInt32 _numFastBytes = kNumFastBytesDefault;
+ UInt32 _longestMatchLength;
+ UInt32 _numDistancePairs;
+
+ UInt32 _additionalOffset;
+
+ UInt32 _optimumEndIndex;
+ UInt32 _optimumCurrentIndex;
+
+ bool _longestMatchWasFound;
+
+ UInt32[] _posSlotPrices = new UInt32[1 << (Base.kNumPosSlotBits + Base.kNumLenToPosStatesBits)];
+ UInt32[] _distancesPrices = new UInt32[Base.kNumFullDistances << Base.kNumLenToPosStatesBits];
+ UInt32[] _alignPrices = new UInt32[Base.kAlignTableSize];
+ UInt32 _alignPriceCount;
+
+ UInt32 _distTableSize = (kDefaultDictionaryLogSize * 2);
+
+ int _posStateBits = 2;
+ UInt32 _posStateMask = (4 - 1);
+ int _numLiteralPosStateBits = 0;
+ int _numLiteralContextBits = 3;
+
+ UInt32 _dictionarySize = (1 << kDefaultDictionaryLogSize);
+ UInt32 _dictionarySizePrev = 0xFFFFFFFF;
+ UInt32 _numFastBytesPrev = 0xFFFFFFFF;
+
+ Int64 nowPos64;
+ bool _finished;
+ System.IO.Stream _inStream;
+
+ EMatchFinderType _matchFinderType = EMatchFinderType.BT4;
+ bool _writeEndMark = false;
+
+ bool _needReleaseMFStream;
+
+ void Create()
+ {
+ if (_matchFinder == null)
+ {
+ LZ.BinTree bt = new LZ.BinTree();
+ int numHashBytes = 4;
+ if (_matchFinderType == EMatchFinderType.BT2)
+ numHashBytes = 2;
+ bt.SetType(numHashBytes);
+ _matchFinder = bt;
+ }
+ _literalEncoder.Create(_numLiteralPosStateBits, _numLiteralContextBits);
+
+ if (_dictionarySize == _dictionarySizePrev && _numFastBytesPrev == _numFastBytes)
+ return;
+ _matchFinder.Create(_dictionarySize, kNumOpts, _numFastBytes, Base.kMatchMaxLen + 1);
+ _dictionarySizePrev = _dictionarySize;
+ _numFastBytesPrev = _numFastBytes;
+ }
+
+ public Encoder()
+ {
+ for (int i = 0; i < kNumOpts; i++)
+ _optimum[i] = new Optimal();
+ for (int i = 0; i < Base.kNumLenToPosStates; i++)
+ _posSlotEncoder[i] = new RangeCoder.BitTreeEncoder(Base.kNumPosSlotBits);
+ }
+
+ void SetWriteEndMarkerMode(bool writeEndMarker)
+ {
+ _writeEndMark = writeEndMarker;
+ }
+
+ void Init()
+ {
+ BaseInit();
+ _rangeEncoder.Init();
+
+ uint i;
+ for (i = 0; i < Base.kNumStates; i++)
+ {
+ for (uint j = 0; j <= _posStateMask; j++)
+ {
+ uint complexState = (i << Base.kNumPosStatesBitsMax) + j;
+ _isMatch[complexState].Init();
+ _isRep0Long[complexState].Init();
+ }
+ _isRep[i].Init();
+ _isRepG0[i].Init();
+ _isRepG1[i].Init();
+ _isRepG2[i].Init();
+ }
+ _literalEncoder.Init();
+ for (i = 0; i < Base.kNumLenToPosStates; i++)
+ _posSlotEncoder[i].Init();
+ for (i = 0; i < Base.kNumFullDistances - Base.kEndPosModelIndex; i++)
+ _posEncoders[i].Init();
+
+ _lenEncoder.Init((UInt32)1 << _posStateBits);
+ _repMatchLenEncoder.Init((UInt32)1 << _posStateBits);
+
+ _posAlignEncoder.Init();
+
+ _longestMatchWasFound = false;
+ _optimumEndIndex = 0;
+ _optimumCurrentIndex = 0;
+ _additionalOffset = 0;
+ }
+
+ void ReadMatchDistances(out UInt32 lenRes, out UInt32 numDistancePairs)
+ {
+ lenRes = 0;
+ numDistancePairs = _matchFinder.GetMatches(_matchDistances);
+ if (numDistancePairs > 0)
+ {
+ lenRes = _matchDistances[numDistancePairs - 2];
+ if (lenRes == _numFastBytes)
+ lenRes += _matchFinder.GetMatchLen((int)lenRes - 1, _matchDistances[numDistancePairs - 1],
+ Base.kMatchMaxLen - lenRes);
+ }
+ _additionalOffset++;
+ }
+
+
+ void MovePos(UInt32 num)
+ {
+ if (num > 0)
+ {
+ _matchFinder.Skip(num);
+ _additionalOffset += num;
+ }
+ }
+
+ UInt32 GetRepLen1Price(Base.State state, UInt32 posState)
+ {
+ return _isRepG0[state.Index].GetPrice0() +
+ _isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0();
+ }
+
+ UInt32 GetPureRepPrice(UInt32 repIndex, Base.State state, UInt32 posState)
+ {
+ UInt32 price;
+ if (repIndex == 0)
+ {
+ price = _isRepG0[state.Index].GetPrice0();
+ price += _isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1();
+ }
+ else
+ {
+ price = _isRepG0[state.Index].GetPrice1();
+ if (repIndex == 1)
+ price += _isRepG1[state.Index].GetPrice0();
+ else
+ {
+ price += _isRepG1[state.Index].GetPrice1();
+ price += _isRepG2[state.Index].GetPrice(repIndex - 2);
+ }
+ }
+ return price;
+ }
+
+ UInt32 GetRepPrice(UInt32 repIndex, UInt32 len, Base.State state, UInt32 posState)
+ {
+ UInt32 price = _repMatchLenEncoder.GetPrice(len - Base.kMatchMinLen, posState);
+ return price + GetPureRepPrice(repIndex, state, posState);
+ }
+
+ UInt32 GetPosLenPrice(UInt32 pos, UInt32 len, UInt32 posState)
+ {
+ UInt32 price;
+ UInt32 lenToPosState = Base.GetLenToPosState(len);
+ if (pos < Base.kNumFullDistances)
+ price = _distancesPrices[(lenToPosState * Base.kNumFullDistances) + pos];
+ else
+ price = _posSlotPrices[(lenToPosState << Base.kNumPosSlotBits) + GetPosSlot2(pos)] +
+ _alignPrices[pos & Base.kAlignMask];
+ return price + _lenEncoder.GetPrice(len - Base.kMatchMinLen, posState);
+ }
+
+ UInt32 Backward(out UInt32 backRes, UInt32 cur)
+ {
+ _optimumEndIndex = cur;
+ UInt32 posMem = _optimum[cur].PosPrev;
+ UInt32 backMem = _optimum[cur].BackPrev;
+ do
+ {
+ if (_optimum[cur].Prev1IsChar)
+ {
+ _optimum[posMem].MakeAsChar();
+ _optimum[posMem].PosPrev = posMem - 1;
+ if (_optimum[cur].Prev2)
+ {
+ _optimum[posMem - 1].Prev1IsChar = false;
+ _optimum[posMem - 1].PosPrev = _optimum[cur].PosPrev2;
+ _optimum[posMem - 1].BackPrev = _optimum[cur].BackPrev2;
+ }
+ }
+ UInt32 posPrev = posMem;
+ UInt32 backCur = backMem;
+
+ backMem = _optimum[posPrev].BackPrev;
+ posMem = _optimum[posPrev].PosPrev;
+
+ _optimum[posPrev].BackPrev = backCur;
+ _optimum[posPrev].PosPrev = cur;
+ cur = posPrev;
+ }
+ while (cur > 0);
+ backRes = _optimum[0].BackPrev;
+ _optimumCurrentIndex = _optimum[0].PosPrev;
+ return _optimumCurrentIndex;
+ }
+
+ UInt32[] reps = new UInt32[Base.kNumRepDistances];
+ UInt32[] repLens = new UInt32[Base.kNumRepDistances];
+
+
+ UInt32 GetOptimum(UInt32 position, out UInt32 backRes)
+ {
+ if (_optimumEndIndex != _optimumCurrentIndex)
+ {
+ UInt32 lenRes = _optimum[_optimumCurrentIndex].PosPrev - _optimumCurrentIndex;
+ backRes = _optimum[_optimumCurrentIndex].BackPrev;
+ _optimumCurrentIndex = _optimum[_optimumCurrentIndex].PosPrev;
+ return lenRes;
+ }
+ _optimumCurrentIndex = _optimumEndIndex = 0;
+
+ UInt32 lenMain, numDistancePairs;
+ if (!_longestMatchWasFound)
+ {
+ ReadMatchDistances(out lenMain, out numDistancePairs);
+ }
+ else
+ {
+ lenMain = _longestMatchLength;
+ numDistancePairs = _numDistancePairs;
+ _longestMatchWasFound = false;
+ }
+
+ UInt32 numAvailableBytes = _matchFinder.GetNumAvailableBytes() + 1;
+ if (numAvailableBytes < 2)
+ {
+ backRes = 0xFFFFFFFF;
+ return 1;
+ }
+ if (numAvailableBytes > Base.kMatchMaxLen)
+ numAvailableBytes = Base.kMatchMaxLen;
+
+ UInt32 repMaxIndex = 0;
+ UInt32 i;
+ for (i = 0; i < Base.kNumRepDistances; i++)
+ {
+ reps[i] = _repDistances[i];
+ repLens[i] = _matchFinder.GetMatchLen(0 - 1, reps[i], Base.kMatchMaxLen);
+ if (repLens[i] > repLens[repMaxIndex])
+ repMaxIndex = i;
+ }
+ if (repLens[repMaxIndex] >= _numFastBytes)
+ {
+ backRes = repMaxIndex;
+ UInt32 lenRes = repLens[repMaxIndex];
+ MovePos(lenRes - 1);
+ return lenRes;
+ }
+
+ if (lenMain >= _numFastBytes)
+ {
+ backRes = _matchDistances[numDistancePairs - 1] + Base.kNumRepDistances;
+ MovePos(lenMain - 1);
+ return lenMain;
+ }
+
+ Byte currentByte = _matchFinder.GetIndexByte(0 - 1);
+ Byte matchByte = _matchFinder.GetIndexByte((Int32)(0 - _repDistances[0] - 1 - 1));
+
+ if (lenMain < 2 && currentByte != matchByte && repLens[repMaxIndex] < 2)
+ {
+ backRes = (UInt32)0xFFFFFFFF;
+ return 1;
+ }
+
+ _optimum[0].State = _state;
+
+ UInt32 posState = (position & _posStateMask);
+
+ _optimum[1].Price = _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0() +
+ _literalEncoder.GetSubCoder(position, _previousByte).GetPrice(!_state.IsCharState(), matchByte, currentByte);
+ _optimum[1].MakeAsChar();
+
+ UInt32 matchPrice = _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1();
+ UInt32 repMatchPrice = matchPrice + _isRep[_state.Index].GetPrice1();
+
+ if (matchByte == currentByte)
+ {
+ UInt32 shortRepPrice = repMatchPrice + GetRepLen1Price(_state, posState);
+ if (shortRepPrice < _optimum[1].Price)
+ {
+ _optimum[1].Price = shortRepPrice;
+ _optimum[1].MakeAsShortRep();
+ }
+ }
+
+ UInt32 lenEnd = ((lenMain >= repLens[repMaxIndex]) ? lenMain : repLens[repMaxIndex]);
+
+ if(lenEnd < 2)
+ {
+ backRes = _optimum[1].BackPrev;
+ return 1;
+ }
+
+ _optimum[1].PosPrev = 0;
+
+ _optimum[0].Backs0 = reps[0];
+ _optimum[0].Backs1 = reps[1];
+ _optimum[0].Backs2 = reps[2];
+ _optimum[0].Backs3 = reps[3];
+
+ UInt32 len = lenEnd;
+ do
+ _optimum[len--].Price = kIfinityPrice;
+ while (len >= 2);
+
+ for (i = 0; i < Base.kNumRepDistances; i++)
+ {
+ UInt32 repLen = repLens[i];
+ if (repLen < 2)
+ continue;
+ UInt32 price = repMatchPrice + GetPureRepPrice(i, _state, posState);
+ do
+ {
+ UInt32 curAndLenPrice = price + _repMatchLenEncoder.GetPrice(repLen - 2, posState);
+ Optimal optimum = _optimum[repLen];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = 0;
+ optimum.BackPrev = i;
+ optimum.Prev1IsChar = false;
+ }
+ }
+ while (--repLen >= 2);
+ }
+
+ UInt32 normalMatchPrice = matchPrice + _isRep[_state.Index].GetPrice0();
+
+ len = ((repLens[0] >= 2) ? repLens[0] + 1 : 2);
+ if (len <= lenMain)
+ {
+ UInt32 offs = 0;
+ while (len > _matchDistances[offs])
+ offs += 2;
+ for (; ; len++)
+ {
+ UInt32 distance = _matchDistances[offs + 1];
+ UInt32 curAndLenPrice = normalMatchPrice + GetPosLenPrice(distance, len, posState);
+ Optimal optimum = _optimum[len];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = 0;
+ optimum.BackPrev = distance + Base.kNumRepDistances;
+ optimum.Prev1IsChar = false;
+ }
+ if (len == _matchDistances[offs])
+ {
+ offs += 2;
+ if (offs == numDistancePairs)
+ break;
+ }
+ }
+ }
+
+ UInt32 cur = 0;
+
+ while (true)
+ {
+ cur++;
+ if (cur == lenEnd)
+ return Backward(out backRes, cur);
+ UInt32 newLen;
+ ReadMatchDistances(out newLen, out numDistancePairs);
+ if (newLen >= _numFastBytes)
+ {
+ _numDistancePairs = numDistancePairs;
+ _longestMatchLength = newLen;
+ _longestMatchWasFound = true;
+ return Backward(out backRes, cur);
+ }
+ position++;
+ UInt32 posPrev = _optimum[cur].PosPrev;
+ Base.State state;
+ if (_optimum[cur].Prev1IsChar)
+ {
+ posPrev--;
+ if (_optimum[cur].Prev2)
+ {
+ state = _optimum[_optimum[cur].PosPrev2].State;
+ if (_optimum[cur].BackPrev2 < Base.kNumRepDistances)
+ state.UpdateRep();
+ else
+ state.UpdateMatch();
+ }
+ else
+ state = _optimum[posPrev].State;
+ state.UpdateChar();
+ }
+ else
+ state = _optimum[posPrev].State;
+ if (posPrev == cur - 1)
+ {
+ if (_optimum[cur].IsShortRep())
+ state.UpdateShortRep();
+ else
+ state.UpdateChar();
+ }
+ else
+ {
+ UInt32 pos;
+ if (_optimum[cur].Prev1IsChar && _optimum[cur].Prev2)
+ {
+ posPrev = _optimum[cur].PosPrev2;
+ pos = _optimum[cur].BackPrev2;
+ state.UpdateRep();
+ }
+ else
+ {
+ pos = _optimum[cur].BackPrev;
+ if (pos < Base.kNumRepDistances)
+ state.UpdateRep();
+ else
+ state.UpdateMatch();
+ }
+ Optimal opt = _optimum[posPrev];
+ if (pos < Base.kNumRepDistances)
+ {
+ if (pos == 0)
+ {
+ reps[0] = opt.Backs0;
+ reps[1] = opt.Backs1;
+ reps[2] = opt.Backs2;
+ reps[3] = opt.Backs3;
+ }
+ else if (pos == 1)
+ {
+ reps[0] = opt.Backs1;
+ reps[1] = opt.Backs0;
+ reps[2] = opt.Backs2;
+ reps[3] = opt.Backs3;
+ }
+ else if (pos == 2)
+ {
+ reps[0] = opt.Backs2;
+ reps[1] = opt.Backs0;
+ reps[2] = opt.Backs1;
+ reps[3] = opt.Backs3;
+ }
+ else
+ {
+ reps[0] = opt.Backs3;
+ reps[1] = opt.Backs0;
+ reps[2] = opt.Backs1;
+ reps[3] = opt.Backs2;
+ }
+ }
+ else
+ {
+ reps[0] = (pos - Base.kNumRepDistances);
+ reps[1] = opt.Backs0;
+ reps[2] = opt.Backs1;
+ reps[3] = opt.Backs2;
+ }
+ }
+ _optimum[cur].State = state;
+ _optimum[cur].Backs0 = reps[0];
+ _optimum[cur].Backs1 = reps[1];
+ _optimum[cur].Backs2 = reps[2];
+ _optimum[cur].Backs3 = reps[3];
+ UInt32 curPrice = _optimum[cur].Price;
+
+ currentByte = _matchFinder.GetIndexByte(0 - 1);
+ matchByte = _matchFinder.GetIndexByte((Int32)(0 - reps[0] - 1 - 1));
+
+ posState = (position & _posStateMask);
+
+ UInt32 curAnd1Price = curPrice +
+ _isMatch[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0() +
+ _literalEncoder.GetSubCoder(position, _matchFinder.GetIndexByte(0 - 2)).
+ GetPrice(!state.IsCharState(), matchByte, currentByte);
+
+ Optimal nextOptimum = _optimum[cur + 1];
+
+ bool nextIsChar = false;
+ if (curAnd1Price < nextOptimum.Price)
+ {
+ nextOptimum.Price = curAnd1Price;
+ nextOptimum.PosPrev = cur;
+ nextOptimum.MakeAsChar();
+ nextIsChar = true;
+ }
+
+ matchPrice = curPrice + _isMatch[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1();
+ repMatchPrice = matchPrice + _isRep[state.Index].GetPrice1();
+
+ if (matchByte == currentByte &&
+ !(nextOptimum.PosPrev < cur && nextOptimum.BackPrev == 0))
+ {
+ UInt32 shortRepPrice = repMatchPrice + GetRepLen1Price(state, posState);
+ if (shortRepPrice <= nextOptimum.Price)
+ {
+ nextOptimum.Price = shortRepPrice;
+ nextOptimum.PosPrev = cur;
+ nextOptimum.MakeAsShortRep();
+ nextIsChar = true;
+ }
+ }
+
+ UInt32 numAvailableBytesFull = _matchFinder.GetNumAvailableBytes() + 1;
+ numAvailableBytesFull = Math.Min(kNumOpts - 1 - cur, numAvailableBytesFull);
+ numAvailableBytes = numAvailableBytesFull;
+
+ if (numAvailableBytes < 2)
+ continue;
+ if (numAvailableBytes > _numFastBytes)
+ numAvailableBytes = _numFastBytes;
+ if (!nextIsChar && matchByte != currentByte)
+ {
+ // try Literal + rep0
+ UInt32 t = Math.Min(numAvailableBytesFull - 1, _numFastBytes);
+ UInt32 lenTest2 = _matchFinder.GetMatchLen(0, reps[0], t);
+ if (lenTest2 >= 2)
+ {
+ Base.State state2 = state;
+ state2.UpdateChar();
+ UInt32 posStateNext = (position + 1) & _posStateMask;
+ UInt32 nextRepMatchPrice = curAnd1Price +
+ _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice1() +
+ _isRep[state2.Index].GetPrice1();
+ {
+ UInt32 offset = cur + 1 + lenTest2;
+ while (lenEnd < offset)
+ _optimum[++lenEnd].Price = kIfinityPrice;
+ UInt32 curAndLenPrice = nextRepMatchPrice + GetRepPrice(
+ 0, lenTest2, state2, posStateNext);
+ Optimal optimum = _optimum[offset];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = cur + 1;
+ optimum.BackPrev = 0;
+ optimum.Prev1IsChar = true;
+ optimum.Prev2 = false;
+ }
+ }
+ }
+ }
+
+ UInt32 startLen = 2; // speed optimization
+
+ for (UInt32 repIndex = 0; repIndex < Base.kNumRepDistances; repIndex++)
+ {
+ UInt32 lenTest = _matchFinder.GetMatchLen(0 - 1, reps[repIndex], numAvailableBytes);
+ if (lenTest < 2)
+ continue;
+ UInt32 lenTestTemp = lenTest;
+ do
+ {
+ while (lenEnd < cur + lenTest)
+ _optimum[++lenEnd].Price = kIfinityPrice;
+ UInt32 curAndLenPrice = repMatchPrice + GetRepPrice(repIndex, lenTest, state, posState);
+ Optimal optimum = _optimum[cur + lenTest];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = cur;
+ optimum.BackPrev = repIndex;
+ optimum.Prev1IsChar = false;
+ }
+ }
+ while(--lenTest >= 2);
+ lenTest = lenTestTemp;
+
+ if (repIndex == 0)
+ startLen = lenTest + 1;
+
+ // if (_maxMode)
+ if (lenTest < numAvailableBytesFull)
+ {
+ UInt32 t = Math.Min(numAvailableBytesFull - 1 - lenTest, _numFastBytes);
+ UInt32 lenTest2 = _matchFinder.GetMatchLen((Int32)lenTest, reps[repIndex], t);
+ if (lenTest2 >= 2)
+ {
+ Base.State state2 = state;
+ state2.UpdateRep();
+ UInt32 posStateNext = (position + lenTest) & _posStateMask;
+ UInt32 curAndLenCharPrice =
+ repMatchPrice + GetRepPrice(repIndex, lenTest, state, posState) +
+ _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice0() +
+ _literalEncoder.GetSubCoder(position + lenTest,
+ _matchFinder.GetIndexByte((Int32)lenTest - 1 - 1)).GetPrice(true,
+ _matchFinder.GetIndexByte((Int32)((Int32)lenTest - 1 - (Int32)(reps[repIndex] + 1))),
+ _matchFinder.GetIndexByte((Int32)lenTest - 1));
+ state2.UpdateChar();
+ posStateNext = (position + lenTest + 1) & _posStateMask;
+ UInt32 nextMatchPrice = curAndLenCharPrice + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice1();
+ UInt32 nextRepMatchPrice = nextMatchPrice + _isRep[state2.Index].GetPrice1();
+
+ // for(; lenTest2 >= 2; lenTest2--)
+ {
+ UInt32 offset = lenTest + 1 + lenTest2;
+ while(lenEnd < cur + offset)
+ _optimum[++lenEnd].Price = kIfinityPrice;
+ UInt32 curAndLenPrice = nextRepMatchPrice + GetRepPrice(0, lenTest2, state2, posStateNext);
+ Optimal optimum = _optimum[cur + offset];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = cur + lenTest + 1;
+ optimum.BackPrev = 0;
+ optimum.Prev1IsChar = true;
+ optimum.Prev2 = true;
+ optimum.PosPrev2 = cur;
+ optimum.BackPrev2 = repIndex;
+ }
+ }
+ }
+ }
+ }
+
+ if (newLen > numAvailableBytes)
+ {
+ newLen = numAvailableBytes;
+ for (numDistancePairs = 0; newLen > _matchDistances[numDistancePairs]; numDistancePairs += 2) ;
+ _matchDistances[numDistancePairs] = newLen;
+ numDistancePairs += 2;
+ }
+ if (newLen >= startLen)
+ {
+ normalMatchPrice = matchPrice + _isRep[state.Index].GetPrice0();
+ while (lenEnd < cur + newLen)
+ _optimum[++lenEnd].Price = kIfinityPrice;
+
+ UInt32 offs = 0;
+ while (startLen > _matchDistances[offs])
+ offs += 2;
+
+ for (UInt32 lenTest = startLen; ; lenTest++)
+ {
+ UInt32 curBack = _matchDistances[offs + 1];
+ UInt32 curAndLenPrice = normalMatchPrice + GetPosLenPrice(curBack, lenTest, posState);
+ Optimal optimum = _optimum[cur + lenTest];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = cur;
+ optimum.BackPrev = curBack + Base.kNumRepDistances;
+ optimum.Prev1IsChar = false;
+ }
+
+ if (lenTest == _matchDistances[offs])
+ {
+ if (lenTest < numAvailableBytesFull)
+ {
+ UInt32 t = Math.Min(numAvailableBytesFull - 1 - lenTest, _numFastBytes);
+ UInt32 lenTest2 = _matchFinder.GetMatchLen((Int32)lenTest, curBack, t);
+ if (lenTest2 >= 2)
+ {
+ Base.State state2 = state;
+ state2.UpdateMatch();
+ UInt32 posStateNext = (position + lenTest) & _posStateMask;
+ UInt32 curAndLenCharPrice = curAndLenPrice +
+ _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice0() +
+ _literalEncoder.GetSubCoder(position + lenTest,
+ _matchFinder.GetIndexByte((Int32)lenTest - 1 - 1)).
+ GetPrice(true,
+ _matchFinder.GetIndexByte((Int32)lenTest - (Int32)(curBack + 1) - 1),
+ _matchFinder.GetIndexByte((Int32)lenTest - 1));
+ state2.UpdateChar();
+ posStateNext = (position + lenTest + 1) & _posStateMask;
+ UInt32 nextMatchPrice = curAndLenCharPrice + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice1();
+ UInt32 nextRepMatchPrice = nextMatchPrice + _isRep[state2.Index].GetPrice1();
+
+ UInt32 offset = lenTest + 1 + lenTest2;
+ while (lenEnd < cur + offset)
+ _optimum[++lenEnd].Price = kIfinityPrice;
+ curAndLenPrice = nextRepMatchPrice + GetRepPrice(0, lenTest2, state2, posStateNext);
+ optimum = _optimum[cur + offset];
+ if (curAndLenPrice < optimum.Price)
+ {
+ optimum.Price = curAndLenPrice;
+ optimum.PosPrev = cur + lenTest + 1;
+ optimum.BackPrev = 0;
+ optimum.Prev1IsChar = true;
+ optimum.Prev2 = true;
+ optimum.PosPrev2 = cur;
+ optimum.BackPrev2 = curBack + Base.kNumRepDistances;
+ }
+ }
+ }
+ offs += 2;
+ if (offs == numDistancePairs)
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ bool ChangePair(UInt32 smallDist, UInt32 bigDist)
+ {
+ const int kDif = 7;
+ return (smallDist < ((UInt32)(1) << (32 - kDif)) && bigDist >= (smallDist << kDif));
+ }
+
+ void WriteEndMarker(UInt32 posState)
+ {
+ if (!_writeEndMark)
+ return;
+
+ _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].Encode(_rangeEncoder, 1);
+ _isRep[_state.Index].Encode(_rangeEncoder, 0);
+ _state.UpdateMatch();
+ UInt32 len = Base.kMatchMinLen;
+ _lenEncoder.Encode(_rangeEncoder, len - Base.kMatchMinLen, posState);
+ UInt32 posSlot = (1 << Base.kNumPosSlotBits) - 1;
+ UInt32 lenToPosState = Base.GetLenToPosState(len);
+ _posSlotEncoder[lenToPosState].Encode(_rangeEncoder, posSlot);
+ int footerBits = 30;
+ UInt32 posReduced = (((UInt32)1) << footerBits) - 1;
+ _rangeEncoder.EncodeDirectBits(posReduced >> Base.kNumAlignBits, footerBits - Base.kNumAlignBits);
+ _posAlignEncoder.ReverseEncode(_rangeEncoder, posReduced & Base.kAlignMask);
+ }
+
+ void Flush(UInt32 nowPos)
+ {
+ ReleaseMFStream();
+ WriteEndMarker(nowPos & _posStateMask);
+ _rangeEncoder.FlushData();
+ _rangeEncoder.FlushStream();
+ }
+
+ public void CodeOneBlock(out Int64 inSize, out Int64 outSize, out bool finished)
+ {
+ inSize = 0;
+ outSize = 0;
+ finished = true;
+
+ if (_inStream != null)
+ {
+ _matchFinder.SetStream(_inStream);
+ _matchFinder.Init();
+ _needReleaseMFStream = true;
+ _inStream = null;
+ if (_trainSize > 0)
+ _matchFinder.Skip(_trainSize);
+ }
+
+ if (_finished)
+ return;
+ _finished = true;
+
+
+ Int64 progressPosValuePrev = nowPos64;
+ if (nowPos64 == 0)
+ {
+ if (_matchFinder.GetNumAvailableBytes() == 0)
+ {
+ Flush((UInt32)nowPos64);
+ return;
+ }
+ UInt32 len, numDistancePairs; // it's not used
+ ReadMatchDistances(out len, out numDistancePairs);
+ UInt32 posState = (UInt32)(nowPos64) & _posStateMask;
+ _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].Encode(_rangeEncoder, 0);
+ _state.UpdateChar();
+ Byte curByte = _matchFinder.GetIndexByte((Int32)(0 - _additionalOffset));
+ _literalEncoder.GetSubCoder((UInt32)(nowPos64), _previousByte).Encode(_rangeEncoder, curByte);
+ _previousByte = curByte;
+ _additionalOffset--;
+ nowPos64++;
+ }
+ if (_matchFinder.GetNumAvailableBytes() == 0)
+ {
+ Flush((UInt32)nowPos64);
+ return;
+ }
+ while (true)
+ {
+ UInt32 pos;
+ UInt32 len = GetOptimum((UInt32)nowPos64, out pos);
+
+ UInt32 posState = ((UInt32)nowPos64) & _posStateMask;
+ UInt32 complexState = (_state.Index << Base.kNumPosStatesBitsMax) + posState;
+ if (len == 1 && pos == 0xFFFFFFFF)
+ {
+ _isMatch[complexState].Encode(_rangeEncoder, 0);
+ Byte curByte = _matchFinder.GetIndexByte((Int32)(0 - _additionalOffset));
+ LiteralEncoder.Encoder2 subCoder = _literalEncoder.GetSubCoder((UInt32)nowPos64, _previousByte);
+ if (!_state.IsCharState())
+ {
+ Byte matchByte = _matchFinder.GetIndexByte((Int32)(0 - _repDistances[0] - 1 - _additionalOffset));
+ subCoder.EncodeMatched(_rangeEncoder, matchByte, curByte);
+ }
+ else
+ subCoder.Encode(_rangeEncoder, curByte);
+ _previousByte = curByte;
+ _state.UpdateChar();
+ }
+ else
+ {
+ _isMatch[complexState].Encode(_rangeEncoder, 1);
+ if (pos < Base.kNumRepDistances)
+ {
+ _isRep[_state.Index].Encode(_rangeEncoder, 1);
+ if (pos == 0)
+ {
+ _isRepG0[_state.Index].Encode(_rangeEncoder, 0);
+ if (len == 1)
+ _isRep0Long[complexState].Encode(_rangeEncoder, 0);
+ else
+ _isRep0Long[complexState].Encode(_rangeEncoder, 1);
+ }
+ else
+ {
+ _isRepG0[_state.Index].Encode(_rangeEncoder, 1);
+ if (pos == 1)
+ _isRepG1[_state.Index].Encode(_rangeEncoder, 0);
+ else
+ {
+ _isRepG1[_state.Index].Encode(_rangeEncoder, 1);
+ _isRepG2[_state.Index].Encode(_rangeEncoder, pos - 2);
+ }
+ }
+ if (len == 1)
+ _state.UpdateShortRep();
+ else
+ {
+ _repMatchLenEncoder.Encode(_rangeEncoder, len - Base.kMatchMinLen, posState);
+ _state.UpdateRep();
+ }
+ UInt32 distance = _repDistances[pos];
+ if (pos != 0)
+ {
+ for (UInt32 i = pos; i >= 1; i--)
+ _repDistances[i] = _repDistances[i - 1];
+ _repDistances[0] = distance;
+ }
+ }
+ else
+ {
+ _isRep[_state.Index].Encode(_rangeEncoder, 0);
+ _state.UpdateMatch();
+ _lenEncoder.Encode(_rangeEncoder, len - Base.kMatchMinLen, posState);
+ pos -= Base.kNumRepDistances;
+ UInt32 posSlot = GetPosSlot(pos);
+ UInt32 lenToPosState = Base.GetLenToPosState(len);
+ _posSlotEncoder[lenToPosState].Encode(_rangeEncoder, posSlot);
+
+ if (posSlot >= Base.kStartPosModelIndex)
+ {
+ int footerBits = (int)((posSlot >> 1) - 1);
+ UInt32 baseVal = ((2 | (posSlot & 1)) << footerBits);
+ UInt32 posReduced = pos - baseVal;
+
+ if (posSlot < Base.kEndPosModelIndex)
+ RangeCoder.BitTreeEncoder.ReverseEncode(_posEncoders,
+ baseVal - posSlot - 1, _rangeEncoder, footerBits, posReduced);
+ else
+ {
+ _rangeEncoder.EncodeDirectBits(posReduced >> Base.kNumAlignBits, footerBits - Base.kNumAlignBits);
+ _posAlignEncoder.ReverseEncode(_rangeEncoder, posReduced & Base.kAlignMask);
+ _alignPriceCount++;
+ }
+ }
+ UInt32 distance = pos;
+ for (UInt32 i = Base.kNumRepDistances - 1; i >= 1; i--)
+ _repDistances[i] = _repDistances[i - 1];
+ _repDistances[0] = distance;
+ _matchPriceCount++;
+ }
+ _previousByte = _matchFinder.GetIndexByte((Int32)(len - 1 - _additionalOffset));
+ }
+ _additionalOffset -= len;
+ nowPos64 += len;
+ if (_additionalOffset == 0)
+ {
+ // if (!_fastMode)
+ if (_matchPriceCount >= (1 << 7))
+ FillDistancesPrices();
+ if (_alignPriceCount >= Base.kAlignTableSize)
+ FillAlignPrices();
+ inSize = nowPos64;
+ outSize = _rangeEncoder.GetProcessedSizeAdd();
+ if (_matchFinder.GetNumAvailableBytes() == 0)
+ {
+ Flush((UInt32)nowPos64);
+ return;
+ }
+
+ if (nowPos64 - progressPosValuePrev >= (1 << 12))
+ {
+ _finished = false;
+ finished = false;
+ return;
+ }
+ }
+ }
+ }
+
+ void ReleaseMFStream()
+ {
+ if (_matchFinder != null && _needReleaseMFStream)
+ {
+ _matchFinder.ReleaseStream();
+ _needReleaseMFStream = false;
+ }
+ }
+
+ void SetOutStream(System.IO.Stream outStream) { _rangeEncoder.SetStream(outStream); }
+ void ReleaseOutStream() { _rangeEncoder.ReleaseStream(); }
+
+ void ReleaseStreams()
+ {
+ ReleaseMFStream();
+ ReleaseOutStream();
+ }
+
+ void SetStreams(System.IO.Stream inStream, System.IO.Stream outStream,
+ Int64 inSize, Int64 outSize)
+ {
+ _inStream = inStream;
+ _finished = false;
+ Create();
+ SetOutStream(outStream);
+ Init();
+
+ // if (!_fastMode)
+ {
+ FillDistancesPrices();
+ FillAlignPrices();
+ }
+
+ _lenEncoder.SetTableSize(_numFastBytes + 1 - Base.kMatchMinLen);
+ _lenEncoder.UpdateTables((UInt32)1 << _posStateBits);
+ _repMatchLenEncoder.SetTableSize(_numFastBytes + 1 - Base.kMatchMinLen);
+ _repMatchLenEncoder.UpdateTables((UInt32)1 << _posStateBits);
+
+ nowPos64 = 0;
+ }
+
+
+ public void Code(System.IO.Stream inStream, System.IO.Stream outStream,
+ Int64 inSize, Int64 outSize, ICodeProgress progress)
+ {
+ _needReleaseMFStream = false;
+ try
+ {
+ SetStreams(inStream, outStream, inSize, outSize);
+ while (true)
+ {
+ Int64 processedInSize;
+ Int64 processedOutSize;
+ bool finished;
+ CodeOneBlock(out processedInSize, out processedOutSize, out finished);
+ if (finished)
+ return;
+ if (progress != null)
+ {
+ progress.SetProgress(processedInSize, processedOutSize);
+ }
+ }
+ }
+ finally
+ {
+ ReleaseStreams();
+ }
+ }
+
+ const int kPropSize = 5;
+ Byte[] properties = new Byte[kPropSize];
+
+ public void WriteCoderProperties(System.IO.Stream outStream)
+ {
+ properties[0] = (Byte)((_posStateBits * 5 + _numLiteralPosStateBits) * 9 + _numLiteralContextBits);
+ for (int i = 0; i < 4; i++)
+ properties[1 + i] = (Byte)((_dictionarySize >> (8 * i)) & 0xFF);
+ outStream.Write(properties, 0, kPropSize);
+ }
+
+ UInt32[] tempPrices = new UInt32[Base.kNumFullDistances];
+ UInt32 _matchPriceCount;
+
+ void FillDistancesPrices()
+ {
+ for (UInt32 i = Base.kStartPosModelIndex; i < Base.kNumFullDistances; i++)
+ {
+ UInt32 posSlot = GetPosSlot(i);
+ int footerBits = (int)((posSlot >> 1) - 1);
+ UInt32 baseVal = ((2 | (posSlot & 1)) << footerBits);
+ tempPrices[i] = BitTreeEncoder.ReverseGetPrice(_posEncoders,
+ baseVal - posSlot - 1, footerBits, i - baseVal);
+ }
+
+ for (UInt32 lenToPosState = 0; lenToPosState < Base.kNumLenToPosStates; lenToPosState++)
+ {
+ UInt32 posSlot;
+ RangeCoder.BitTreeEncoder encoder = _posSlotEncoder[lenToPosState];
+
+ UInt32 st = (lenToPosState << Base.kNumPosSlotBits);
+ for (posSlot = 0; posSlot < _distTableSize; posSlot++)
+ _posSlotPrices[st + posSlot] = encoder.GetPrice(posSlot);
+ for (posSlot = Base.kEndPosModelIndex; posSlot < _distTableSize; posSlot++)
+ _posSlotPrices[st + posSlot] += ((((posSlot >> 1) - 1) - Base.kNumAlignBits) << RangeCoder.BitEncoder.kNumBitPriceShiftBits);
+
+ UInt32 st2 = lenToPosState * Base.kNumFullDistances;
+ UInt32 i;
+ for (i = 0; i < Base.kStartPosModelIndex; i++)
+ _distancesPrices[st2 + i] = _posSlotPrices[st + i];
+ for (; i < Base.kNumFullDistances; i++)
+ _distancesPrices[st2 + i] = _posSlotPrices[st + GetPosSlot(i)] + tempPrices[i];
+ }
+ _matchPriceCount = 0;
+ }
+
+ void FillAlignPrices()
+ {
+ for (UInt32 i = 0; i < Base.kAlignTableSize; i++)
+ _alignPrices[i] = _posAlignEncoder.ReverseGetPrice(i);
+ _alignPriceCount = 0;
+ }
+
+
+ static string[] kMatchFinderIDs =
+ {
+ "BT2",
+ "BT4",
+ };
+
+ static int FindMatchFinder(string s)
+ {
+ for (int m = 0; m < kMatchFinderIDs.Length; m++)
+ if (s == kMatchFinderIDs[m])
+ return m;
+ return -1;
+ }
+
+ public void SetCoderProperties(CoderPropID[] propIDs, object[] properties)
+ {
+ for (UInt32 i = 0; i < properties.Length; i++)
+ {
+ object prop = properties[i];
+ switch (propIDs[i])
+ {
+ case CoderPropID.NumFastBytes:
+ {
+ if (!(prop is Int32))
+ throw new InvalidParamException();
+ Int32 numFastBytes = (Int32)prop;
+ if (numFastBytes < 5 || numFastBytes > Base.kMatchMaxLen)
+ throw new InvalidParamException();
+ _numFastBytes = (UInt32)numFastBytes;
+ break;
+ }
+ case CoderPropID.Algorithm:
+ {
+ /*
+ if (!(prop is Int32))
+ throw new InvalidParamException();
+ Int32 maximize = (Int32)prop;
+ _fastMode = (maximize == 0);
+ _maxMode = (maximize >= 2);
+ */
+ break;
+ }
+ case CoderPropID.MatchFinder:
+ {
+ if (!(prop is String))
+ throw new InvalidParamException();
+ EMatchFinderType matchFinderIndexPrev = _matchFinderType;
+ int m = FindMatchFinder(((string)prop).ToUpper());
+ if (m < 0)
+ throw new InvalidParamException();
+ _matchFinderType = (EMatchFinderType)m;
+ if (_matchFinder != null && matchFinderIndexPrev != _matchFinderType)
+ {
+ _dictionarySizePrev = 0xFFFFFFFF;
+ _matchFinder = null;
+ }
+ break;
+ }
+ case CoderPropID.DictionarySize:
+ {
+ const int kDicLogSizeMaxCompress = 30;
+ if (!(prop is Int32))
+ throw new InvalidParamException(); ;
+ Int32 dictionarySize = (Int32)prop;
+ if (dictionarySize < (UInt32)(1 << Base.kDicLogSizeMin) ||
+ dictionarySize > (UInt32)(1 << kDicLogSizeMaxCompress))
+ throw new InvalidParamException();
+ _dictionarySize = (UInt32)dictionarySize;
+ int dicLogSize;
+ for (dicLogSize = 0; dicLogSize < (UInt32)kDicLogSizeMaxCompress; dicLogSize++)
+ if (dictionarySize <= ((UInt32)(1) << dicLogSize))
+ break;
+ _distTableSize = (UInt32)dicLogSize * 2;
+ break;
+ }
+ case CoderPropID.PosStateBits:
+ {
+ if (!(prop is Int32))
+ throw new InvalidParamException();
+ Int32 v = (Int32)prop;
+ if (v < 0 || v > (UInt32)Base.kNumPosStatesBitsEncodingMax)
+ throw new InvalidParamException();
+ _posStateBits = (int)v;
+ _posStateMask = (((UInt32)1) << (int)_posStateBits) - 1;
+ break;
+ }
+ case CoderPropID.LitPosBits:
+ {
+ if (!(prop is Int32))
+ throw new InvalidParamException();
+ Int32 v = (Int32)prop;
+ if (v < 0 || v > (UInt32)Base.kNumLitPosStatesBitsEncodingMax)
+ throw new InvalidParamException();
+ _numLiteralPosStateBits = (int)v;
+ break;
+ }
+ case CoderPropID.LitContextBits:
+ {
+ if (!(prop is Int32))
+ throw new InvalidParamException();
+ Int32 v = (Int32)prop;
+ if (v < 0 || v > (UInt32)Base.kNumLitContextBitsMax)
+ throw new InvalidParamException(); ;
+ _numLiteralContextBits = (int)v;
+ break;
+ }
+ case CoderPropID.EndMarker:
+ {
+ if (!(prop is Boolean))
+ throw new InvalidParamException();
+ SetWriteEndMarkerMode((Boolean)prop);
+ break;
+ }
+ default:
+ throw new InvalidParamException();
+ }
+ }
+ }
+
+ uint _trainSize = 0;
+ public void SetTrainSize(uint trainSize)
+ {
+ _trainSize = trainSize;
+ }
+
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.cs new file mode 100644 index 000000000..8aa446267 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.cs @@ -0,0 +1,364 @@ +using System;
+using System.IO;
+namespace SevenZip
+{
+ using CommandLineParser;
+
+ public class CDoubleStream: Stream
+ {
+ public System.IO.Stream s1;
+ public System.IO.Stream s2;
+ public int fileIndex;
+ public long skipSize;
+
+ public override bool CanRead { get { return true; }}
+ public override bool CanWrite { get { return false; }}
+ public override bool CanSeek { get { return false; }}
+ public override long Length { get { return s1.Length + s2.Length - skipSize; } }
+ public override long Position
+ {
+ get { return 0; }
+ set { }
+ }
+ public override void Flush() { }
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ int numTotal = 0;
+ while (count > 0)
+ {
+ if (fileIndex == 0)
+ {
+ int num = s1.Read(buffer, offset, count);
+ offset += num;
+ count -= num;
+ numTotal += num;
+ if (num == 0)
+ fileIndex++;
+ }
+ if (fileIndex == 1)
+ {
+ numTotal += s2.Read(buffer, offset, count);
+ return numTotal;
+ }
+ }
+ return numTotal;
+ }
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ throw (new Exception("can't Write"));
+ }
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ throw (new Exception("can't Seek"));
+ }
+ public override void SetLength(long value)
+ {
+ throw (new Exception("can't SetLength"));
+ }
+ }
+
+ class LzmaAlone
+ {
+ enum Key
+ {
+ Help1 = 0,
+ Help2,
+ Mode,
+ Dictionary,
+ FastBytes,
+ LitContext,
+ LitPos,
+ PosBits,
+ MatchFinder,
+ EOS,
+ StdIn,
+ StdOut,
+ Train
+ };
+
+ static void PrintHelp()
+ {
+ System.Console.WriteLine("\nUsage: LZMA <e|d> [<switches>...] inputFile outputFile\n" +
+ " e: encode file\n" +
+ " d: decode file\n" +
+ " b: Benchmark\n" +
+ "<Switches>\n" +
+ // " -a{N}: set compression mode - [0, 1], default: 1 (max)\n" +
+ " -d{N}: set dictionary - [0, 29], default: 23 (8MB)\n" +
+ " -fb{N}: set number of fast bytes - [5, 273], default: 128\n" +
+ " -lc{N}: set number of literal context bits - [0, 8], default: 3\n" +
+ " -lp{N}: set number of literal pos bits - [0, 4], default: 0\n" +
+ " -pb{N}: set number of pos bits - [0, 4], default: 2\n" +
+ " -mf{MF_ID}: set Match Finder: [bt2, bt4], default: bt4\n" +
+ " -eos: write End Of Stream marker\n"
+ // + " -si: read data from stdin\n"
+ // + " -so: write data to stdout\n"
+ );
+ }
+
+ static bool GetNumber(string s, out Int32 v)
+ {
+ v = 0;
+ for (int i = 0; i < s.Length; i++)
+ {
+ char c = s[i];
+ if (c < '0' || c > '9')
+ return false;
+ v *= 10;
+ v += (Int32)(c - '0');
+ }
+ return true;
+ }
+
+ static int IncorrectCommand()
+ {
+ throw (new Exception("Command line error"));
+ // System.Console.WriteLine("\nCommand line error\n");
+ // return 1;
+ }
+ static int Main2(string[] args)
+ {
+ System.Console.WriteLine("\nLZMA# 4.61 2008-11-23\n");
+
+ if (args.Length == 0)
+ {
+ PrintHelp();
+ return 0;
+ }
+
+ SwitchForm[] kSwitchForms = new SwitchForm[13];
+ int sw = 0;
+ kSwitchForms[sw++] = new SwitchForm("?", SwitchType.Simple, false);
+ kSwitchForms[sw++] = new SwitchForm("H", SwitchType.Simple, false);
+ kSwitchForms[sw++] = new SwitchForm("A", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("D", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("FB", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("LC", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("LP", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("PB", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("MF", SwitchType.UnLimitedPostString, false, 1);
+ kSwitchForms[sw++] = new SwitchForm("EOS", SwitchType.Simple, false);
+ kSwitchForms[sw++] = new SwitchForm("SI", SwitchType.Simple, false);
+ kSwitchForms[sw++] = new SwitchForm("SO", SwitchType.Simple, false);
+ kSwitchForms[sw++] = new SwitchForm("T", SwitchType.UnLimitedPostString, false, 1);
+
+
+ Parser parser = new Parser(sw);
+ try
+ {
+ parser.ParseStrings(kSwitchForms, args);
+ }
+ catch
+ {
+ return IncorrectCommand();
+ }
+
+ if (parser[(int)Key.Help1].ThereIs || parser[(int)Key.Help2].ThereIs)
+ {
+ PrintHelp();
+ return 0;
+ }
+
+ System.Collections.ArrayList nonSwitchStrings = parser.NonSwitchStrings;
+
+ int paramIndex = 0;
+ if (paramIndex >= nonSwitchStrings.Count)
+ return IncorrectCommand();
+ string command = (string)nonSwitchStrings[paramIndex++];
+ command = command.ToLower();
+
+ bool dictionaryIsDefined = false;
+ Int32 dictionary = 1 << 21;
+ if (parser[(int)Key.Dictionary].ThereIs)
+ {
+ Int32 dicLog;
+ if (!GetNumber((string)parser[(int)Key.Dictionary].PostStrings[0], out dicLog))
+ IncorrectCommand();
+ dictionary = (Int32)1 << dicLog;
+ dictionaryIsDefined = true;
+ }
+ string mf = "bt4";
+ if (parser[(int)Key.MatchFinder].ThereIs)
+ mf = (string)parser[(int)Key.MatchFinder].PostStrings[0];
+ mf = mf.ToLower();
+
+ if (command == "b")
+ {
+ const Int32 kNumDefaultItereations = 10;
+ Int32 numIterations = kNumDefaultItereations;
+ if (paramIndex < nonSwitchStrings.Count)
+ if (!GetNumber((string)nonSwitchStrings[paramIndex++], out numIterations))
+ numIterations = kNumDefaultItereations;
+ return LzmaBench.LzmaBenchmark(numIterations, (UInt32)dictionary);
+ }
+
+ string train = "";
+ if (parser[(int)Key.Train].ThereIs)
+ train = (string)parser[(int)Key.Train].PostStrings[0];
+
+ bool encodeMode = false;
+ if (command == "e")
+ encodeMode = true;
+ else if (command == "d")
+ encodeMode = false;
+ else
+ IncorrectCommand();
+
+ bool stdInMode = parser[(int)Key.StdIn].ThereIs;
+ bool stdOutMode = parser[(int)Key.StdOut].ThereIs;
+
+ Stream inStream = null;
+ if (stdInMode)
+ {
+ throw (new Exception("Not implemeted"));
+ }
+ else
+ {
+ if (paramIndex >= nonSwitchStrings.Count)
+ IncorrectCommand();
+ string inputName = (string)nonSwitchStrings[paramIndex++];
+ inStream = new FileStream(inputName, FileMode.Open, FileAccess.Read);
+ }
+
+ FileStream outStream = null;
+ if (stdOutMode)
+ {
+ throw (new Exception("Not implemeted"));
+ }
+ else
+ {
+ if (paramIndex >= nonSwitchStrings.Count)
+ IncorrectCommand();
+ string outputName = (string)nonSwitchStrings[paramIndex++];
+ outStream = new FileStream(outputName, FileMode.Create, FileAccess.Write);
+ }
+
+ FileStream trainStream = null;
+ if (train.Length != 0)
+ trainStream = new FileStream(train, FileMode.Open, FileAccess.Read);
+
+ if (encodeMode)
+ {
+ if (!dictionaryIsDefined)
+ dictionary = 1 << 23;
+
+ Int32 posStateBits = 2;
+ Int32 litContextBits = 3; // for normal files
+ // UInt32 litContextBits = 0; // for 32-bit data
+ Int32 litPosBits = 0;
+ // UInt32 litPosBits = 2; // for 32-bit data
+ Int32 algorithm = 2;
+ Int32 numFastBytes = 128;
+
+ bool eos = parser[(int)Key.EOS].ThereIs || stdInMode;
+
+ if (parser[(int)Key.Mode].ThereIs)
+ if (!GetNumber((string)parser[(int)Key.Mode].PostStrings[0], out algorithm))
+ IncorrectCommand();
+
+ if (parser[(int)Key.FastBytes].ThereIs)
+ if (!GetNumber((string)parser[(int)Key.FastBytes].PostStrings[0], out numFastBytes))
+ IncorrectCommand();
+ if (parser[(int)Key.LitContext].ThereIs)
+ if (!GetNumber((string)parser[(int)Key.LitContext].PostStrings[0], out litContextBits))
+ IncorrectCommand();
+ if (parser[(int)Key.LitPos].ThereIs)
+ if (!GetNumber((string)parser[(int)Key.LitPos].PostStrings[0], out litPosBits))
+ IncorrectCommand();
+ if (parser[(int)Key.PosBits].ThereIs)
+ if (!GetNumber((string)parser[(int)Key.PosBits].PostStrings[0], out posStateBits))
+ IncorrectCommand();
+
+ CoderPropID[] propIDs =
+ {
+ CoderPropID.DictionarySize,
+ CoderPropID.PosStateBits,
+ CoderPropID.LitContextBits,
+ CoderPropID.LitPosBits,
+ CoderPropID.Algorithm,
+ CoderPropID.NumFastBytes,
+ CoderPropID.MatchFinder,
+ CoderPropID.EndMarker
+ };
+ object[] properties =
+ {
+ (Int32)(dictionary),
+ (Int32)(posStateBits),
+ (Int32)(litContextBits),
+ (Int32)(litPosBits),
+ (Int32)(algorithm),
+ (Int32)(numFastBytes),
+ mf,
+ eos
+ };
+
+ Compression.LZMA.Encoder encoder = new Compression.LZMA.Encoder();
+ encoder.SetCoderProperties(propIDs, properties);
+ encoder.WriteCoderProperties(outStream);
+ Int64 fileSize;
+ if (eos || stdInMode)
+ fileSize = -1;
+ else
+ fileSize = inStream.Length;
+ for (int i = 0; i < 8; i++)
+ outStream.WriteByte((Byte)(fileSize >> (8 * i)));
+ if (trainStream != null)
+ {
+ CDoubleStream doubleStream = new CDoubleStream();
+ doubleStream.s1 = trainStream;
+ doubleStream.s2 = inStream;
+ doubleStream.fileIndex = 0;
+ inStream = doubleStream;
+ long trainFileSize = trainStream.Length;
+ doubleStream.skipSize = 0;
+ if (trainFileSize > dictionary)
+ doubleStream.skipSize = trainFileSize - dictionary;
+ trainStream.Seek(doubleStream.skipSize, SeekOrigin.Begin);
+ encoder.SetTrainSize((uint)(trainFileSize - doubleStream.skipSize));
+ }
+ encoder.Code(inStream, outStream, -1, -1, null);
+ }
+ else if (command == "d")
+ {
+ byte[] properties = new byte[5];
+ if (inStream.Read(properties, 0, 5) != 5)
+ throw (new Exception("input .lzma is too short"));
+ Compression.LZMA.Decoder decoder = new Compression.LZMA.Decoder();
+ decoder.SetDecoderProperties(properties);
+ if (trainStream != null)
+ {
+ if (!decoder.Train(trainStream))
+ throw (new Exception("can't train"));
+ }
+ long outSize = 0;
+ for (int i = 0; i < 8; i++)
+ {
+ int v = inStream.ReadByte();
+ if (v < 0)
+ throw (new Exception("Can't Read 1"));
+ outSize |= ((long)(byte)v) << (8 * i);
+ }
+ long compressedSize = inStream.Length - inStream.Position;
+ decoder.Code(inStream, outStream, compressedSize, outSize, null);
+ }
+ else
+ throw (new Exception("Command Error"));
+ return 0;
+ }
+
+ [STAThread]
+ static int Main(string[] args)
+ {
+ try
+ {
+ return Main2(args);
+ }
+ catch (Exception e)
+ {
+ Console.WriteLine("{0} Caught exception #1.", e);
+ // throw e;
+ return 1;
+ }
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.csproj b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.csproj new file mode 100644 index 000000000..ceb707350 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.csproj @@ -0,0 +1,90 @@ +<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+ <PropertyGroup>
+ <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+ <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+ <ProductVersion>8.0.50727</ProductVersion>
+ <SchemaVersion>2.0</SchemaVersion>
+ <ProjectGuid>{CE33DF18-F9C8-4D6F-9057-DBB4DB96E973}</ProjectGuid>
+ <OutputType>Exe</OutputType>
+ <RootNamespace>LzmaAlone</RootNamespace>
+ <AssemblyName>Lzma#</AssemblyName>
+ <WarningLevel>4</WarningLevel>
+ </PropertyGroup>
+ <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+ <DebugSymbols>true</DebugSymbols>
+ <DebugType>full</DebugType>
+ <Optimize>false</Optimize>
+ <OutputPath>.\bin\Debug\</OutputPath>
+ <DefineConstants>DEBUG;TRACE</DefineConstants>
+ </PropertyGroup>
+ <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+ <DebugSymbols>false</DebugSymbols>
+ <Optimize>true</Optimize>
+ <OutputPath>.\bin\Release\</OutputPath>
+ <DefineConstants>TRACE</DefineConstants>
+ <PlatformTarget>AnyCPU</PlatformTarget>
+ </PropertyGroup>
+ <ItemGroup>
+ <Reference Include="System" />
+ <Reference Include="System.Data" />
+ <Reference Include="System.Xml" />
+ </ItemGroup>
+ <ItemGroup>
+ <Compile Include="..\..\Common\CommandLineParser.cs">
+ <Link>Common\CommandLineParser.cs</Link>
+ </Compile>
+ <Compile Include="..\..\Common\CRC.cs">
+ <Link>Common\CRC.cs</Link>
+ </Compile>
+ <Compile Include="..\..\ICoder.cs">
+ <Link>ICoder.cs</Link>
+ </Compile>
+ <Compile Include="..\LZ\IMatchFinder.cs">
+ <Link>LZ\IMatchFinder.cs</Link>
+ </Compile>
+ <Compile Include="..\LZ\LzBinTree.cs">
+ <Link>LZ\LzBinTree.cs</Link>
+ </Compile>
+ <Compile Include="..\LZ\LzInWindow.cs">
+ <Link>LZ\LzInWindow.cs</Link>
+ </Compile>
+ <Compile Include="..\LZ\LzOutWindow.cs">
+ <Link>LZ\LzOutWindow.cs</Link>
+ </Compile>
+ <Compile Include="..\LZMA\LzmaBase.cs">
+ <Link>LZMA\LzmaBase.cs</Link>
+ </Compile>
+ <Compile Include="..\LZMA\LzmaDecoder.cs">
+ <Link>LZMA\LzmaDecoder.cs</Link>
+ </Compile>
+ <Compile Include="..\LZMA\LzmaEncoder.cs">
+ <Link>LZMA\LzmaEncoder.cs</Link>
+ </Compile>
+ <Compile Include="..\RangeCoder\RangeCoder.cs">
+ <Link>RangeCoder\RangeCoder.cs</Link>
+ </Compile>
+ <Compile Include="..\RangeCoder\RangeCoderBit.cs">
+ <Link>RangeCoder\RangeCoderBit.cs</Link>
+ </Compile>
+ <Compile Include="..\RangeCoder\RangeCoderBitTree.cs">
+ <Link>RangeCoder\RangeCoderBitTree.cs</Link>
+ </Compile>
+ <Compile Include="LzmaAlone.cs">
+ <SubType>Code</SubType>
+ </Compile>
+ <Compile Include="LzmaBench.cs">
+ <SubType>Code</SubType>
+ </Compile>
+ <Compile Include="Properties\AssemblyInfo.cs" />
+ <Compile Include="Properties\Settings.cs">
+ <AutoGen>True</AutoGen>
+ <DependentUpon>Settings.settings</DependentUpon>
+ </Compile>
+ <None Include="Properties\Settings.settings">
+ <Generator>SettingsSingleFileGenerator</Generator>
+ <LastGenOutput>Settings.cs</LastGenOutput>
+ </None>
+ <AppDesigner Include="Properties\" />
+ </ItemGroup>
+ <Import Project="$(MSBuildBinPath)\Microsoft.CSHARP.Targets" />
+</Project>
\ No newline at end of file diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.sln b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.sln new file mode 100644 index 000000000..a96ee3e43 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaAlone.sln @@ -0,0 +1,20 @@ +
+Microsoft Visual Studio Solution File, Format Version 9.00
+# Visual C# Express 2005
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LzmaAlone", "LzmaAlone.csproj", "{CE33DF18-F9C8-4D6F-9057-DBB4DB96E973}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {CE33DF18-F9C8-4D6F-9057-DBB4DB96E973}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {CE33DF18-F9C8-4D6F-9057-DBB4DB96E973}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {CE33DF18-F9C8-4D6F-9057-DBB4DB96E973}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {CE33DF18-F9C8-4D6F-9057-DBB4DB96E973}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+EndGlobal
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaBench.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaBench.cs new file mode 100644 index 000000000..6a1ffe246 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/LzmaBench.cs @@ -0,0 +1,340 @@ +// LzmaBench.cs
+
+using System;
+using System.IO;
+
+namespace SevenZip
+{
+ /// <summary>
+ /// LZMA Benchmark
+ /// </summary>
+ internal abstract class LzmaBench
+ {
+ const UInt32 kAdditionalSize = (6 << 20);
+ const UInt32 kCompressedAdditionalSize = (1 << 10);
+ const UInt32 kMaxLzmaPropSize = 10;
+
+ class CRandomGenerator
+ {
+ UInt32 A1;
+ UInt32 A2;
+ public CRandomGenerator() { Init(); }
+ public void Init() { A1 = 362436069; A2 = 521288629; }
+ public UInt32 GetRnd()
+ {
+ return
+ ((A1 = 36969 * (A1 & 0xffff) + (A1 >> 16)) << 16) ^
+ ((A2 = 18000 * (A2 & 0xffff) + (A2 >> 16)));
+ }
+ };
+
+ class CBitRandomGenerator
+ {
+ CRandomGenerator RG = new CRandomGenerator();
+ UInt32 Value;
+ int NumBits;
+ public void Init()
+ {
+ Value = 0;
+ NumBits = 0;
+ }
+ public UInt32 GetRnd(int numBits)
+ {
+ UInt32 result;
+ if (NumBits > numBits)
+ {
+ result = Value & (((UInt32)1 << numBits) - 1);
+ Value >>= numBits;
+ NumBits -= numBits;
+ return result;
+ }
+ numBits -= NumBits;
+ result = (Value << numBits);
+ Value = RG.GetRnd();
+ result |= Value & (((UInt32)1 << numBits) - 1);
+ Value >>= numBits;
+ NumBits = 32 - numBits;
+ return result;
+ }
+ };
+
+ class CBenchRandomGenerator
+ {
+ CBitRandomGenerator RG = new CBitRandomGenerator();
+ UInt32 Pos;
+ UInt32 Rep0;
+
+ public UInt32 BufferSize;
+ public Byte[] Buffer = null;
+
+ public CBenchRandomGenerator() { }
+
+ public void Set(UInt32 bufferSize)
+ {
+ Buffer = new Byte[bufferSize];
+ Pos = 0;
+ BufferSize = bufferSize;
+ }
+ UInt32 GetRndBit() { return RG.GetRnd(1); }
+ UInt32 GetLogRandBits(int numBits)
+ {
+ UInt32 len = RG.GetRnd(numBits);
+ return RG.GetRnd((int)len);
+ }
+ UInt32 GetOffset()
+ {
+ if (GetRndBit() == 0)
+ return GetLogRandBits(4);
+ return (GetLogRandBits(4) << 10) | RG.GetRnd(10);
+ }
+ UInt32 GetLen1() { return RG.GetRnd(1 + (int)RG.GetRnd(2)); }
+ UInt32 GetLen2() { return RG.GetRnd(2 + (int)RG.GetRnd(2)); }
+ public void Generate()
+ {
+ RG.Init();
+ Rep0 = 1;
+ while (Pos < BufferSize)
+ {
+ if (GetRndBit() == 0 || Pos < 1)
+ Buffer[Pos++] = (Byte)RG.GetRnd(8);
+ else
+ {
+ UInt32 len;
+ if (RG.GetRnd(3) == 0)
+ len = 1 + GetLen1();
+ else
+ {
+ do
+ Rep0 = GetOffset();
+ while (Rep0 >= Pos);
+ Rep0++;
+ len = 2 + GetLen2();
+ }
+ for (UInt32 i = 0; i < len && Pos < BufferSize; i++, Pos++)
+ Buffer[Pos] = Buffer[Pos - Rep0];
+ }
+ }
+ }
+ };
+
+ class CrcOutStream : System.IO.Stream
+ {
+ public CRC CRC = new CRC();
+ public void Init() { CRC.Init(); }
+ public UInt32 GetDigest() { return CRC.GetDigest(); }
+
+ public override bool CanRead { get { return false; } }
+ public override bool CanSeek { get { return false; } }
+ public override bool CanWrite { get { return true; } }
+ public override Int64 Length { get { return 0; } }
+ public override Int64 Position { get { return 0; } set { } }
+ public override void Flush() { }
+ public override long Seek(long offset, SeekOrigin origin) { return 0; }
+ public override void SetLength(long value) { }
+ public override int Read(byte[] buffer, int offset, int count) { return 0; }
+
+ public override void WriteByte(byte b)
+ {
+ CRC.UpdateByte(b);
+ }
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ CRC.Update(buffer, (uint)offset, (uint)count);
+ }
+ };
+
+ class CProgressInfo : ICodeProgress
+ {
+ public Int64 ApprovedStart;
+ public Int64 InSize;
+ public System.DateTime Time;
+ public void Init() { InSize = 0; }
+ public void SetProgress(Int64 inSize, Int64 outSize)
+ {
+ if (inSize >= ApprovedStart && InSize == 0)
+ {
+ Time = DateTime.UtcNow;
+ InSize = inSize;
+ }
+ }
+ }
+ const int kSubBits = 8;
+
+ static UInt32 GetLogSize(UInt32 size)
+ {
+ for (int i = kSubBits; i < 32; i++)
+ for (UInt32 j = 0; j < (1 << kSubBits); j++)
+ if (size <= (((UInt32)1) << i) + (j << (i - kSubBits)))
+ return (UInt32)(i << kSubBits) + j;
+ return (32 << kSubBits);
+ }
+
+ static UInt64 MyMultDiv64(UInt64 value, UInt64 elapsedTime)
+ {
+ UInt64 freq = TimeSpan.TicksPerSecond;
+ UInt64 elTime = elapsedTime;
+ while (freq > 1000000)
+ {
+ freq >>= 1;
+ elTime >>= 1;
+ }
+ if (elTime == 0)
+ elTime = 1;
+ return value * freq / elTime;
+ }
+
+ static UInt64 GetCompressRating(UInt32 dictionarySize, UInt64 elapsedTime, UInt64 size)
+ {
+ UInt64 t = GetLogSize(dictionarySize) - (18 << kSubBits);
+ UInt64 numCommandsForOne = 1060 + ((t * t * 10) >> (2 * kSubBits));
+ UInt64 numCommands = (UInt64)(size) * numCommandsForOne;
+ return MyMultDiv64(numCommands, elapsedTime);
+ }
+
+ static UInt64 GetDecompressRating(UInt64 elapsedTime, UInt64 outSize, UInt64 inSize)
+ {
+ UInt64 numCommands = inSize * 220 + outSize * 20;
+ return MyMultDiv64(numCommands, elapsedTime);
+ }
+
+ static UInt64 GetTotalRating(
+ UInt32 dictionarySize,
+ UInt64 elapsedTimeEn, UInt64 sizeEn,
+ UInt64 elapsedTimeDe,
+ UInt64 inSizeDe, UInt64 outSizeDe)
+ {
+ return (GetCompressRating(dictionarySize, elapsedTimeEn, sizeEn) +
+ GetDecompressRating(elapsedTimeDe, inSizeDe, outSizeDe)) / 2;
+ }
+
+ static void PrintValue(UInt64 v)
+ {
+ string s = v.ToString();
+ for (int i = 0; i + s.Length < 6; i++)
+ System.Console.Write(" ");
+ System.Console.Write(s);
+ }
+
+ static void PrintRating(UInt64 rating)
+ {
+ PrintValue(rating / 1000000);
+ System.Console.Write(" MIPS");
+ }
+
+ static void PrintResults(
+ UInt32 dictionarySize,
+ UInt64 elapsedTime,
+ UInt64 size,
+ bool decompressMode, UInt64 secondSize)
+ {
+ UInt64 speed = MyMultDiv64(size, elapsedTime);
+ PrintValue(speed / 1024);
+ System.Console.Write(" KB/s ");
+ UInt64 rating;
+ if (decompressMode)
+ rating = GetDecompressRating(elapsedTime, size, secondSize);
+ else
+ rating = GetCompressRating(dictionarySize, elapsedTime, size);
+ PrintRating(rating);
+ }
+
+ static public int LzmaBenchmark(Int32 numIterations, UInt32 dictionarySize)
+ {
+ if (numIterations <= 0)
+ return 0;
+ if (dictionarySize < (1 << 18))
+ {
+ System.Console.WriteLine("\nError: dictionary size for benchmark must be >= 19 (512 KB)");
+ return 1;
+ }
+ System.Console.Write("\n Compressing Decompressing\n\n");
+
+ Compression.LZMA.Encoder encoder = new Compression.LZMA.Encoder();
+ Compression.LZMA.Decoder decoder = new Compression.LZMA.Decoder();
+
+
+ CoderPropID[] propIDs =
+ {
+ CoderPropID.DictionarySize,
+ };
+ object[] properties =
+ {
+ (Int32)(dictionarySize),
+ };
+
+ UInt32 kBufferSize = dictionarySize + kAdditionalSize;
+ UInt32 kCompressedBufferSize = (kBufferSize / 2) + kCompressedAdditionalSize;
+
+ encoder.SetCoderProperties(propIDs, properties);
+ System.IO.MemoryStream propStream = new System.IO.MemoryStream();
+ encoder.WriteCoderProperties(propStream);
+ byte[] propArray = propStream.ToArray();
+
+ CBenchRandomGenerator rg = new CBenchRandomGenerator();
+
+ rg.Set(kBufferSize);
+ rg.Generate();
+ CRC crc = new CRC();
+ crc.Init();
+ crc.Update(rg.Buffer, 0, rg.BufferSize);
+
+ CProgressInfo progressInfo = new CProgressInfo();
+ progressInfo.ApprovedStart = dictionarySize;
+
+ UInt64 totalBenchSize = 0;
+ UInt64 totalEncodeTime = 0;
+ UInt64 totalDecodeTime = 0;
+ UInt64 totalCompressedSize = 0;
+
+ MemoryStream inStream = new MemoryStream(rg.Buffer, 0, (int)rg.BufferSize);
+ MemoryStream compressedStream = new MemoryStream((int)kCompressedBufferSize);
+ CrcOutStream crcOutStream = new CrcOutStream();
+ for (Int32 i = 0; i < numIterations; i++)
+ {
+ progressInfo.Init();
+ inStream.Seek(0, SeekOrigin.Begin);
+ compressedStream.Seek(0, SeekOrigin.Begin);
+ encoder.Code(inStream, compressedStream, -1, -1, progressInfo);
+ TimeSpan sp2 = DateTime.UtcNow - progressInfo.Time;
+ UInt64 encodeTime = (UInt64)sp2.Ticks;
+
+ long compressedSize = compressedStream.Position;
+ if (progressInfo.InSize == 0)
+ throw (new Exception("Internal ERROR 1282"));
+
+ UInt64 decodeTime = 0;
+ for (int j = 0; j < 2; j++)
+ {
+ compressedStream.Seek(0, SeekOrigin.Begin);
+ crcOutStream.Init();
+
+ decoder.SetDecoderProperties(propArray);
+ UInt64 outSize = kBufferSize;
+ System.DateTime startTime = DateTime.UtcNow;
+ decoder.Code(compressedStream, crcOutStream, 0, (Int64)outSize, null);
+ TimeSpan sp = (DateTime.UtcNow - startTime);
+ decodeTime = (ulong)sp.Ticks;
+ if (crcOutStream.GetDigest() != crc.GetDigest())
+ throw (new Exception("CRC Error"));
+ }
+ UInt64 benchSize = kBufferSize - (UInt64)progressInfo.InSize;
+ PrintResults(dictionarySize, encodeTime, benchSize, false, 0);
+ System.Console.Write(" ");
+ PrintResults(dictionarySize, decodeTime, kBufferSize, true, (ulong)compressedSize);
+ System.Console.WriteLine();
+
+ totalBenchSize += benchSize;
+ totalEncodeTime += encodeTime;
+ totalDecodeTime += decodeTime;
+ totalCompressedSize += (ulong)compressedSize;
+ }
+ System.Console.WriteLine("---------------------------------------------------");
+ PrintResults(dictionarySize, totalEncodeTime, totalBenchSize, false, 0);
+ System.Console.Write(" ");
+ PrintResults(dictionarySize, totalDecodeTime,
+ kBufferSize * (UInt64)numIterations, true, totalCompressedSize);
+ System.Console.WriteLine(" Average");
+ return 0;
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/AssemblyInfo.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/AssemblyInfo.cs new file mode 100644 index 000000000..a394aee87 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/AssemblyInfo.cs @@ -0,0 +1,29 @@ +#region Using directives
+
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+#endregion
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("LZMA#")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Igor Pavlov")]
+[assembly: AssemblyProduct("LZMA# SDK")]
+[assembly: AssemblyCopyright("Copyright @ Igor Pavlov 1999-2004")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Version information for an assembly consists of the following four values:
+//
+// Major Version
+// Minor Version
+// Build Number
+// Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("4.12.*")]
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/Resources.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/Resources.cs new file mode 100644 index 000000000..efe4ee9af --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/Resources.cs @@ -0,0 +1,70 @@ +//------------------------------------------------------------------------------
+// <autogenerated>
+// This code was generated by a tool.
+// Runtime Version:2.0.40607.42
+//
+// Changes to this file may cause incorrect behavior and will be lost if
+// the code is regenerated.
+// </autogenerated>
+//------------------------------------------------------------------------------
+
+namespace LzmaAlone.Properties
+{
+ using System;
+ using System.IO;
+ using System.Resources;
+
+ /// <summary>
+ /// A strongly-typed resource class, for looking up localized strings, etc.
+ /// </summary>
+ // This class was auto-generated by the Strongly Typed Resource Builder
+ // class via a tool like ResGen or Visual Studio.NET.
+ // To add or remove a member, edit your .ResX file then rerun ResGen
+ // with the /str option, or rebuild your VS project.
+ class Resources
+ {
+
+ private static System.Resources.ResourceManager _resMgr;
+
+ private static System.Globalization.CultureInfo _resCulture;
+
+ /*FamANDAssem*/
+ internal Resources()
+ {
+ }
+
+ /// <summary>
+ /// Returns the cached ResourceManager instance used by this class.
+ /// </summary>
+ [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+ public static System.Resources.ResourceManager ResourceManager
+ {
+ get
+ {
+ if ((_resMgr == null))
+ {
+ System.Resources.ResourceManager temp = new System.Resources.ResourceManager("Resources", typeof(Resources).Assembly);
+ _resMgr = temp;
+ }
+ return _resMgr;
+ }
+ }
+
+ /// <summary>
+ /// Overrides the current thread's CurrentUICulture property for all
+ /// resource lookups using this strongly typed resource class.
+ /// </summary>
+ [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+ public static System.Globalization.CultureInfo Culture
+ {
+ get
+ {
+ return _resCulture;
+ }
+ set
+ {
+ _resCulture = value;
+ }
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/Settings.cs b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/Settings.cs new file mode 100644 index 000000000..1281fd2e0 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/LzmaAlone/Properties/Settings.cs @@ -0,0 +1,42 @@ +//------------------------------------------------------------------------------
+// <autogenerated>
+// This code was generated by a tool.
+// Runtime Version:2.0.40607.42
+//
+// Changes to this file may cause incorrect behavior and will be lost if
+// the code is regenerated.
+// </autogenerated>
+//------------------------------------------------------------------------------
+
+namespace LzmaAlone.Properties
+{
+ public partial class Settings : System.Configuration.ApplicationSettingsBase
+ {
+ private static Settings m_Value;
+
+ private static object m_SyncObject = new object();
+
+ public static Settings Value
+ {
+ get
+ {
+ if ((Settings.m_Value == null))
+ {
+ System.Threading.Monitor.Enter(Settings.m_SyncObject);
+ if ((Settings.m_Value == null))
+ {
+ try
+ {
+ Settings.m_Value = new Settings();
+ }
+ finally
+ {
+ System.Threading.Monitor.Exit(Settings.m_SyncObject);
+ }
+ }
+ }
+ return Settings.m_Value;
+ }
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoder.cs b/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoder.cs new file mode 100644 index 000000000..4ced2477e --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoder.cs @@ -0,0 +1,234 @@ +using System;
+
+namespace SevenZip.Compression.RangeCoder
+{
+ class Encoder
+ {
+ public const uint kTopValue = (1 << 24);
+
+ System.IO.Stream Stream;
+
+ public UInt64 Low;
+ public uint Range;
+ uint _cacheSize;
+ byte _cache;
+
+ long StartPosition;
+
+ public void SetStream(System.IO.Stream stream)
+ {
+ Stream = stream;
+ }
+
+ public void ReleaseStream()
+ {
+ Stream = null;
+ }
+
+ public void Init()
+ {
+ StartPosition = Stream.Position;
+
+ Low = 0;
+ Range = 0xFFFFFFFF;
+ _cacheSize = 1;
+ _cache = 0;
+ }
+
+ public void FlushData()
+ {
+ for (int i = 0; i < 5; i++)
+ ShiftLow();
+ }
+
+ public void FlushStream()
+ {
+ Stream.Flush();
+ }
+
+ public void CloseStream()
+ {
+ Stream.Close();
+ }
+
+ public void Encode(uint start, uint size, uint total)
+ {
+ Low += start * (Range /= total);
+ Range *= size;
+ while (Range < kTopValue)
+ {
+ Range <<= 8;
+ ShiftLow();
+ }
+ }
+
+ public void ShiftLow()
+ {
+ if ((uint)Low < (uint)0xFF000000 || (uint)(Low >> 32) == 1)
+ {
+ byte temp = _cache;
+ do
+ {
+ Stream.WriteByte((byte)(temp + (Low >> 32)));
+ temp = 0xFF;
+ }
+ while (--_cacheSize != 0);
+ _cache = (byte)(((uint)Low) >> 24);
+ }
+ _cacheSize++;
+ Low = ((uint)Low) << 8;
+ }
+
+ public void EncodeDirectBits(uint v, int numTotalBits)
+ {
+ for (int i = numTotalBits - 1; i >= 0; i--)
+ {
+ Range >>= 1;
+ if (((v >> i) & 1) == 1)
+ Low += Range;
+ if (Range < kTopValue)
+ {
+ Range <<= 8;
+ ShiftLow();
+ }
+ }
+ }
+
+ public void EncodeBit(uint size0, int numTotalBits, uint symbol)
+ {
+ uint newBound = (Range >> numTotalBits) * size0;
+ if (symbol == 0)
+ Range = newBound;
+ else
+ {
+ Low += newBound;
+ Range -= newBound;
+ }
+ while (Range < kTopValue)
+ {
+ Range <<= 8;
+ ShiftLow();
+ }
+ }
+
+ public long GetProcessedSizeAdd()
+ {
+ return _cacheSize +
+ Stream.Position - StartPosition + 4;
+ // (long)Stream.GetProcessedSize();
+ }
+ }
+
+ class Decoder
+ {
+ public const uint kTopValue = (1 << 24);
+ public uint Range;
+ public uint Code;
+ // public Buffer.InBuffer Stream = new Buffer.InBuffer(1 << 16);
+ public System.IO.Stream Stream;
+
+ public void Init(System.IO.Stream stream)
+ {
+ // Stream.Init(stream);
+ Stream = stream;
+
+ Code = 0;
+ Range = 0xFFFFFFFF;
+ for (int i = 0; i < 5; i++)
+ Code = (Code << 8) | (byte)Stream.ReadByte();
+ }
+
+ public void ReleaseStream()
+ {
+ // Stream.ReleaseStream();
+ Stream = null;
+ }
+
+ public void CloseStream()
+ {
+ Stream.Close();
+ }
+
+ public void Normalize()
+ {
+ while (Range < kTopValue)
+ {
+ Code = (Code << 8) | (byte)Stream.ReadByte();
+ Range <<= 8;
+ }
+ }
+
+ public void Normalize2()
+ {
+ if (Range < kTopValue)
+ {
+ Code = (Code << 8) | (byte)Stream.ReadByte();
+ Range <<= 8;
+ }
+ }
+
+ public uint GetThreshold(uint total)
+ {
+ return Code / (Range /= total);
+ }
+
+ public void Decode(uint start, uint size, uint total)
+ {
+ Code -= start * Range;
+ Range *= size;
+ Normalize();
+ }
+
+ public uint DecodeDirectBits(int numTotalBits)
+ {
+ uint range = Range;
+ uint code = Code;
+ uint result = 0;
+ for (int i = numTotalBits; i > 0; i--)
+ {
+ range >>= 1;
+ /*
+ result <<= 1;
+ if (code >= range)
+ {
+ code -= range;
+ result |= 1;
+ }
+ */
+ uint t = (code - range) >> 31;
+ code -= range & (t - 1);
+ result = (result << 1) | (1 - t);
+
+ if (range < kTopValue)
+ {
+ code = (code << 8) | (byte)Stream.ReadByte();
+ range <<= 8;
+ }
+ }
+ Range = range;
+ Code = code;
+ return result;
+ }
+
+ public uint DecodeBit(uint size0, int numTotalBits)
+ {
+ uint newBound = (Range >> numTotalBits) * size0;
+ uint symbol;
+ if (Code < newBound)
+ {
+ symbol = 0;
+ Range = newBound;
+ }
+ else
+ {
+ symbol = 1;
+ Code -= newBound;
+ Range -= newBound;
+ }
+ Normalize();
+ return symbol;
+ }
+
+ // ulong GetProcessedSize() {return Stream.GetProcessedSize(); }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs b/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs new file mode 100644 index 000000000..000a5a078 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoderBit.cs @@ -0,0 +1,117 @@ +using System;
+
+namespace SevenZip.Compression.RangeCoder
+{
+ struct BitEncoder
+ {
+ public const int kNumBitModelTotalBits = 11;
+ public const uint kBitModelTotal = (1 << kNumBitModelTotalBits);
+ const int kNumMoveBits = 5;
+ const int kNumMoveReducingBits = 2;
+ public const int kNumBitPriceShiftBits = 6;
+
+ uint Prob;
+
+ public void Init() { Prob = kBitModelTotal >> 1; }
+
+ public void UpdateModel(uint symbol)
+ {
+ if (symbol == 0)
+ Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
+ else
+ Prob -= (Prob) >> kNumMoveBits;
+ }
+
+ public void Encode(Encoder encoder, uint symbol)
+ {
+ // encoder.EncodeBit(Prob, kNumBitModelTotalBits, symbol);
+ // UpdateModel(symbol);
+ uint newBound = (encoder.Range >> kNumBitModelTotalBits) * Prob;
+ if (symbol == 0)
+ {
+ encoder.Range = newBound;
+ Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
+ }
+ else
+ {
+ encoder.Low += newBound;
+ encoder.Range -= newBound;
+ Prob -= (Prob) >> kNumMoveBits;
+ }
+ if (encoder.Range < Encoder.kTopValue)
+ {
+ encoder.Range <<= 8;
+ encoder.ShiftLow();
+ }
+ }
+
+ private static UInt32[] ProbPrices = new UInt32[kBitModelTotal >> kNumMoveReducingBits];
+
+ static BitEncoder()
+ {
+ const int kNumBits = (kNumBitModelTotalBits - kNumMoveReducingBits);
+ for (int i = kNumBits - 1; i >= 0; i--)
+ {
+ UInt32 start = (UInt32)1 << (kNumBits - i - 1);
+ UInt32 end = (UInt32)1 << (kNumBits - i);
+ for (UInt32 j = start; j < end; j++)
+ ProbPrices[j] = ((UInt32)i << kNumBitPriceShiftBits) +
+ (((end - j) << kNumBitPriceShiftBits) >> (kNumBits - i - 1));
+ }
+ }
+
+ public uint GetPrice(uint symbol)
+ {
+ return ProbPrices[(((Prob - symbol) ^ ((-(int)symbol))) & (kBitModelTotal - 1)) >> kNumMoveReducingBits];
+ }
+ public uint GetPrice0() { return ProbPrices[Prob >> kNumMoveReducingBits]; }
+ public uint GetPrice1() { return ProbPrices[(kBitModelTotal - Prob) >> kNumMoveReducingBits]; }
+ }
+
+ struct BitDecoder
+ {
+ public const int kNumBitModelTotalBits = 11;
+ public const uint kBitModelTotal = (1 << kNumBitModelTotalBits);
+ const int kNumMoveBits = 5;
+
+ uint Prob;
+
+ public void UpdateModel(int numMoveBits, uint symbol)
+ {
+ if (symbol == 0)
+ Prob += (kBitModelTotal - Prob) >> numMoveBits;
+ else
+ Prob -= (Prob) >> numMoveBits;
+ }
+
+ public void Init() { Prob = kBitModelTotal >> 1; }
+
+ public uint Decode(RangeCoder.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;
+ }
+ }
+ }
+}
diff --git a/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoderBitTree.cs b/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoderBitTree.cs new file mode 100644 index 000000000..3309c14a5 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Compress/RangeCoder/RangeCoderBitTree.cs @@ -0,0 +1,157 @@ +using System;
+
+namespace SevenZip.Compression.RangeCoder
+{
+ struct BitTreeEncoder
+ {
+ BitEncoder[] Models;
+ int NumBitLevels;
+
+ public BitTreeEncoder(int numBitLevels)
+ {
+ NumBitLevels = numBitLevels;
+ Models = new BitEncoder[1 << numBitLevels];
+ }
+
+ public void Init()
+ {
+ for (uint i = 1; i < (1 << NumBitLevels); i++)
+ Models[i].Init();
+ }
+
+ public void Encode(Encoder rangeEncoder, UInt32 symbol)
+ {
+ UInt32 m = 1;
+ for (int bitIndex = NumBitLevels; bitIndex > 0; )
+ {
+ bitIndex--;
+ UInt32 bit = (symbol >> bitIndex) & 1;
+ Models[m].Encode(rangeEncoder, bit);
+ m = (m << 1) | bit;
+ }
+ }
+
+ public void ReverseEncode(Encoder rangeEncoder, UInt32 symbol)
+ {
+ UInt32 m = 1;
+ for (UInt32 i = 0; i < NumBitLevels; i++)
+ {
+ UInt32 bit = symbol & 1;
+ Models[m].Encode(rangeEncoder, bit);
+ m = (m << 1) | bit;
+ symbol >>= 1;
+ }
+ }
+
+ public UInt32 GetPrice(UInt32 symbol)
+ {
+ UInt32 price = 0;
+ UInt32 m = 1;
+ for (int bitIndex = NumBitLevels; bitIndex > 0; )
+ {
+ bitIndex--;
+ UInt32 bit = (symbol >> bitIndex) & 1;
+ price += Models[m].GetPrice(bit);
+ m = (m << 1) + bit;
+ }
+ return price;
+ }
+
+ public UInt32 ReverseGetPrice(UInt32 symbol)
+ {
+ UInt32 price = 0;
+ UInt32 m = 1;
+ for (int i = NumBitLevels; i > 0; i--)
+ {
+ UInt32 bit = symbol & 1;
+ symbol >>= 1;
+ price += Models[m].GetPrice(bit);
+ m = (m << 1) | bit;
+ }
+ return price;
+ }
+
+ public static UInt32 ReverseGetPrice(BitEncoder[] Models, UInt32 startIndex,
+ int NumBitLevels, UInt32 symbol)
+ {
+ UInt32 price = 0;
+ UInt32 m = 1;
+ for (int i = NumBitLevels; i > 0; i--)
+ {
+ UInt32 bit = symbol & 1;
+ symbol >>= 1;
+ price += Models[startIndex + m].GetPrice(bit);
+ m = (m << 1) | bit;
+ }
+ return price;
+ }
+
+ public static void ReverseEncode(BitEncoder[] Models, UInt32 startIndex,
+ Encoder rangeEncoder, int NumBitLevels, UInt32 symbol)
+ {
+ UInt32 m = 1;
+ for (int i = 0; i < NumBitLevels; i++)
+ {
+ UInt32 bit = symbol & 1;
+ Models[startIndex + m].Encode(rangeEncoder, bit);
+ m = (m << 1) | bit;
+ symbol >>= 1;
+ }
+ }
+ }
+
+ struct BitTreeDecoder
+ {
+ BitDecoder[] Models;
+ int NumBitLevels;
+
+ public BitTreeDecoder(int numBitLevels)
+ {
+ NumBitLevels = numBitLevels;
+ Models = new BitDecoder[1 << numBitLevels];
+ }
+
+ public void Init()
+ {
+ for (uint i = 1; i < (1 << NumBitLevels); i++)
+ Models[i].Init();
+ }
+
+ public uint Decode(RangeCoder.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 ReverseDecode(RangeCoder.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 static uint ReverseDecode(BitDecoder[] Models, UInt32 startIndex,
+ RangeCoder.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;
+ }
+ }
+}
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