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(LAX): implemented huffman compression.

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This commit is contained in:
morkt
2018-03-11 21:02:22 +04:00
parent 74e1556291
commit 5202988b48
1 changed files with 8 additions and 3 deletions
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11
ArcFormats/Lambda/ArcLAX.cs
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@@ -27,6 +27,7 @@ using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.ComponentModel.Composition; using System.ComponentModel.Composition;
using System.IO; using System.IO;
using GameRes.Compression;
using GameRes.Utility; using GameRes.Utility;
namespace GameRes.Formats.Lambda namespace GameRes.Formats.Lambda
@@ -71,7 +72,7 @@ namespace GameRes.Formats.Lambda
entry.Offset = index.ToUInt32 (pos+0x18) + data_offset; entry.Offset = index.ToUInt32 (pos+0x18) + data_offset;
if (!entry.CheckPlacement (file.MaxOffset)) if (!entry.CheckPlacement (file.MaxOffset))
return null; return null;
if (name.HasExtension (".bmx")) if (name.HasAnyOfExtensions (".bmx", ".b32"))
entry.Type = "image"; entry.Type = "image";
dir.Add (entry); dir.Add (entry);
pos += entry_length; pos += entry_length;
@@ -132,6 +133,7 @@ namespace GameRes.Formats.Lambda
} }
if (!m_buffer.AsciiEqual ("_AF")) if (!m_buffer.AsciiEqual ("_AF"))
throw new InvalidFormatException ("Invalid compressed LAX stream."); throw new InvalidFormatException ("Invalid compressed LAX stream.");
int method = m_buffer[3];
int chunk_size = m_buffer.ToUInt16 (4); int chunk_size = m_buffer.ToUInt16 (4);
int final_size = m_buffer.ToUInt16 (6); int final_size = m_buffer.ToUInt16 (6);
if (final_size != 0) if (final_size != 0)
@@ -140,7 +142,6 @@ namespace GameRes.Formats.Lambda
if (unpacked_size > m_buffer.Length) if (unpacked_size > m_buffer.Length)
m_buffer = new byte[unpacked_size]; m_buffer = new byte[unpacked_size];
int method = m_buffer[3];
switch (method) // compression method switch (method) // compression method
{ {
case '1': case '1':
@@ -203,7 +204,11 @@ namespace GameRes.Formats.Lambda
int HuffmanUnpack (int unpacked_size) int HuffmanUnpack (int unpacked_size)
{ {
throw new NotImplementedException ("LAX compression method 2 not implemented."); using (var input = new HuffmanDecompressor())
{
input.Initialize (BaseStream);
return input.Continue (m_buffer, 0, unpacked_size);
}
} }
#region IO.Stream members #region IO.Stream members