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Code Issues 295 Packages Projects Releases 20 Wiki Activity

Migrate some easy LZX stuff

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This commit is contained in:
Matt Nadareski
2023-01-03 14:46:30 -08:00
parent 015b895177
commit b273d8314a
5 changed files with 143 additions and 170 deletions
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9
BurnOutSharp.Compression/LZX.cs
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@@ -1,9 +0,0 @@
using BurnOutSharp.Models.Compression.LZX;
namespace BurnOutSharp.Compression
{
public class LZX
{
// TODO: Implement LZX decompression
}
}

12
BurnOutSharp.Compression/LZX/Bits.cs Normal file
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@@ -0,0 +1,12 @@
namespace BurnOutSharp.Compression.LZX
{
/// <see href="https://github.com/wine-mirror/wine/blob/master/dlls/cabinet/cabinet.h"/>
public class Bits
{
public uint BitBuffer;
public int BitLength;
public int InitialPosition; //byte*
}
}

83
BurnOutSharp.Compression/LZX/State.cs Normal file
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@@ -0,0 +1,83 @@
using static BurnOutSharp.Models.Compression.LZX.Constants;
namespace BurnOutSharp.Compression.LZX
{
/// <see href="https://github.com/wine-mirror/wine/blob/master/dlls/cabinet/cabinet.h"/>
public class State
{
/// <summary>
/// the actual decoding window
/// </summary>
public byte[] window;
/// <summary>
/// window size (32Kb through 2Mb)
/// </summary>
public uint window_size;
/// <summary>
/// window size when it was first allocated
/// </summary>
public uint actual_size;
/// <summary>
/// current offset within the window
/// </summary>
public uint window_posn;
/// <summary>
/// for the LRU offset system
/// </summary>
public uint R0, R1, R2;
/// <summary>
/// number of main tree elements
/// </summary>
public ushort main_elements;
/// <summary>
/// have we started decoding at all yet?
/// </summary>
public int header_read;
/// <summary>
/// type of this block
/// </summary>
public ushort block_type;
/// <summary>
/// uncompressed length of this block
/// </summary>
public uint block_length;
/// <summary>
/// uncompressed bytes still left to decode
/// </summary>
public uint block_remaining;
/// <summary>
/// the number of CFDATA blocks processed
/// </summary>
public uint frames_read;
/// <summary>
/// magic header value used for transform
/// </summary>
public int intel_filesize;
/// <summary>
/// current offset in transform space
/// </summary>
public int intel_curpos;
/// <summary>
/// have we seen any translatable data yet?
/// </summary>
public int intel_started;
public ushort[] tblPRETREE_table = new ushort[(1 << LZX_PRETREE_TABLEBITS) + (LZX_PRETREE_MAXSYMBOLS << 1)];
public ushort[] tblMAINTREE_table = new ushort[(1 << LZX_MAINTREE_TABLEBITS) + (LZX_MAINTREE_MAXSYMBOLS << 1)];
public ushort[] tblLENGTH_table = new ushort[(1 << LZX_LENGTH_TABLEBITS) + (LZX_LENGTH_MAXSYMBOLS << 1)];
public ushort[] tblALIGNED_table = new ushort[(1 << LZX_ALIGNED_TABLEBITS) + (LZX_ALIGNED_MAXSYMBOLS << 1)];
}
}

46
BurnOutSharp.Models/Compression/LZX/Constants.cs Normal file
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@@ -0,0 +1,46 @@
namespace BurnOutSharp.Models.Compression.LZX
{
public static class Constants
{
/* some constants defined by the LZX specification */
public const int LZX_MIN_MATCH = (2);
public const int LZX_MAX_MATCH = (257);
public const int LZX_NUM_CHARS = (256);
/// <summary>
/// also blocktypes 4-7 invalid
/// </summary>
public const int LZX_BLOCKTYPE_INVALID = (0);
public const int LZX_BLOCKTYPE_VERBATIM = (1);
public const int LZX_BLOCKTYPE_ALIGNED = (2);
public const int LZX_BLOCKTYPE_UNCOMPRESSED = (3);
public const int LZX_PRETREE_NUM_ELEMENTS = (20);
/// <summary>
/// aligned offset tree #elements
/// </summary>
public const int LZX_ALIGNED_NUM_ELEMENTS = (8);
/// <summary>
/// this one missing from spec!
/// </summary>
public const int LZX_NUM_PRIMARY_LENGTHS = (7);
/// <summary>
/// length tree #elements
/// </summary>
public const int LZX_NUM_SECONDARY_LENGTHS = (249);
/* LZX huffman defines: tweak tablebits as desired */
public const int LZX_PRETREE_MAXSYMBOLS = (LZX_PRETREE_NUM_ELEMENTS);
public const int LZX_PRETREE_TABLEBITS = (6);
public const int LZX_MAINTREE_MAXSYMBOLS = (LZX_NUM_CHARS + 50 * 8);
public const int LZX_MAINTREE_TABLEBITS = (12);
public const int LZX_LENGTH_MAXSYMBOLS = (LZX_NUM_SECONDARY_LENGTHS + 1);
public const int LZX_LENGTH_TABLEBITS = (12);
public const int LZX_ALIGNED_MAXSYMBOLS = (LZX_ALIGNED_NUM_ELEMENTS);
public const int LZX_ALIGNED_TABLEBITS = (7);
public const int LZX_LENTABLE_SAFETY = (64); /* we allow length table decoding overruns */
}
}

163
BurnOutSharp.Wrappers/MicrosoftCabinet.fdi.cs
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@@ -1102,74 +1102,6 @@
// /* MSZIP stuff */
// /// <summary>
// /// window size
// /// </summary>
// public const ushort ZIPWSIZE = 0x8000;
// /// <summary>
// /// bits in base literal/length lookup table
// /// </summary>
// public const int ZIPLBITS = 9;
// /// <summary>
// /// bits in base distance lookup table
// /// </summary>
// public const int ZIPDBITS = 6;
// /// <summary>
// /// maximum bit length of any code
// /// </summary>
// public const int ZIPBMAX = 16;
// /// <summary>
// /// maximum number of codes in any set
// /// </summary>
// public const int ZIPN_MAX = 288;
// /* LZX stuff */
// /* some constants defined by the LZX specification */
// public const int LZX_MIN_MATCH = (2);
// public const int LZX_MAX_MATCH = (257);
// public const int LZX_NUM_CHARS = (256);
// /// <summary>
// /// also blocktypes 4-7 invalid
// /// </summary>
// public const int LZX_BLOCKTYPE_INVALID = (0);
// public const int LZX_BLOCKTYPE_VERBATIM = (1);
// public const int LZX_BLOCKTYPE_ALIGNED = (2);
// public const int LZX_BLOCKTYPE_UNCOMPRESSED = (3);
// public const int LZX_PRETREE_NUM_ELEMENTS = (20);
// /// <summary>
// /// aligned offset tree #elements
// /// </summary>
// public const int LZX_ALIGNED_NUM_ELEMENTS = (8);
// /// <summary>
// /// this one missing from spec!
// /// </summary>
// public const int LZX_NUM_PRIMARY_LENGTHS = (7);
// /// <summary>
// /// length tree #elements
// /// </summary>
// public const int LZX_NUM_SECONDARY_LENGTHS = (249);
// /* LZX huffman defines: tweak tablebits as desired */
// public const int LZX_PRETREE_MAXSYMBOLS = (LZX_PRETREE_NUM_ELEMENTS);
// public const int LZX_PRETREE_TABLEBITS = (6);
// public const int LZX_MAINTREE_MAXSYMBOLS = (LZX_NUM_CHARS + 50 * 8);
// public const int LZX_MAINTREE_TABLEBITS = (12);
// public const int LZX_LENGTH_MAXSYMBOLS = (LZX_NUM_SECONDARY_LENGTHS + 1);
// public const int LZX_LENGTH_TABLEBITS = (12);
// public const int LZX_ALIGNED_MAXSYMBOLS = (LZX_ALIGNED_NUM_ELEMENTS);
// public const int LZX_ALIGNED_TABLEBITS = (7);
// public const int LZX_LENTABLE_SAFETY = (64); /* we allow length table decoding overruns */
// /* CAB data blocks are <= 32768 bytes in uncompressed form. Uncompressed
// * blocks have zero growth. MSZIP guarantees that it won't grow above
// * uncompressed size by more than 12 bytes. LZX guarantees it won't grow
@@ -1183,97 +1115,6 @@
// public const uint EXTRACT_EXTRACTFILES = 0x00000002;
// }
// /* LZX stuff */
// /// <see href="https://github.com/wine-mirror/wine/blob/master/dlls/cabinet/cabinet.h"/>
// internal class LZXstate
// {
// /// <summary>
// /// the actual decoding window
// /// </summary>
// public byte[] window;
// /// <summary>
// /// window size (32Kb through 2Mb)
// /// </summary>
// public uint window_size;
// /// <summary>
// /// window size when it was first allocated
// /// </summary>
// public uint actual_size;
// /// <summary>
// /// current offset within the window
// /// </summary>
// public uint window_posn;
// /// <summary>
// /// for the LRU offset system
// /// </summary>
// public uint R0, R1, R2;
// /// <summary>
// /// number of main tree elements
// /// </summary>
// public ushort main_elements;
// /// <summary>
// /// have we started decoding at all yet?
// /// </summary>
// public int header_read;
// /// <summary>
// /// type of this block
// /// </summary>
// public ushort block_type;
// /// <summary>
// /// uncompressed length of this block
// /// </summary>
// public uint block_length;
// /// <summary>
// /// uncompressed bytes still left to decode
// /// </summary>
// public uint block_remaining;
// /// <summary>
// /// the number of CFDATA blocks processed
// /// </summary>
// public uint frames_read;
// /// <summary>
// /// magic header value used for transform
// /// </summary>
// public int intel_filesize;
// /// <summary>
// /// current offset in transform space
// /// </summary>
// public int intel_curpos;
// /// <summary>
// /// have we seen any translatable data yet?
// /// </summary>
// public int intel_started;
// public ushort[] tblPRETREE_table = new ushort[(1 << LZX_PRETREE_TABLEBITS) + (LZX_PRETREE_MAXSYMBOLS << 1)];
// public ushort[] tblMAINTREE_table = new ushort[(1 << LZX_MAINTREE_TABLEBITS) + (LZX_MAINTREE_MAXSYMBOLS << 1)];
// public ushort[] tblLENGTH_table = new ushort[(1 << LZX_LENGTH_TABLEBITS) + (LZX_LENGTH_MAXSYMBOLS << 1)];
// public ushort[] tblALIGNED_table = new ushort[(1 << LZX_ALIGNED_TABLEBITS) + (LZX_ALIGNED_MAXSYMBOLS << 1)];
// }
// /// <see href="https://github.com/wine-mirror/wine/blob/master/dlls/cabinet/cabinet.h"/>
// internal class lzx_bits
// {
// public uint bb;
// public int bl;
// public byte* ip;
// }
// /****************************************************************************/
// /// <see href="https://github.com/wine-mirror/wine/blob/master/dlls/cabinet/cabinet.h"/>
@@ -1480,7 +1321,7 @@
// public Compression.MSZIP.State zip;
// public Compression.Quantum.State qtm;
// public LZXstate lzx;
// public Compression.LZX.State lzx;
// #endregion
// }
@@ -1811,7 +1652,7 @@
// public Compression.MSZIP.State zip;
// public Compression.Quantum.State qtm;
// public LZXstate lzx;
// public Compression.LZX.State lzx;
// #endregion