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Implement construction of DxLib's Huffman tree

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Sławomir Śpiewak
2024-08-02 19:29:19 +02:00
parent 881e5f1e3f
commit aa2900f15b
3 changed files with 209 additions and 21 deletions
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34
ArcFormats/DxLib/ArcDX8.cs
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@@ -39,18 +39,10 @@ namespace GameRes.Formats.DxLib
internal class DXA8PackedEntry : PackedEntry {
public bool HuffmanCompressed { get; set; }
public uint HuffmanSize { get; set; }
}
internal struct DXA8HuffmanNode
{
UInt64 Weight;
int bitNumber;
byte[] bitArray; //32 bytes here
int Index;
int ParentNode; // index of parent node.
int[] ChildNode; //two children nodes, -1 if not existent.
}
[Export(typeof(ArchiveFormat))]
public class Dx8Opener : DxOpener
@@ -67,7 +59,7 @@ namespace GameRes.Formats.DxLib
Signatures = new[] { 0x00085844u };
}
static readonly byte[] DefaultKey = new byte[] { 0xBE, 0xC8, 0x8A, 0xF5, 0x28, 0x50, 0xC9 };
//static readonly byte[] DefaultKey = new byte[] { 0xBE, 0xC8, 0x8A, 0xF5, 0x28, 0x50, 0xC9 };
DxScheme DefaultScheme = new DxScheme { KnownKeys = new List<IDxKey>() };
@@ -100,11 +92,8 @@ namespace GameRes.Formats.DxLib
};
}
string QueryPassword(ArcView file)
{
var options = Query<DXAOpts>(arcStrings.ZIPEncryptedNotice);
return options.Keyword;
}
public override ResourceOptions GetOptions(object widget)
{
@@ -191,11 +180,13 @@ namespace GameRes.Formats.DxLib
DxDirectory ReadDirEntry()
{
var dir = new DxDirectory();
dir.DirOffset = m_input.ReadInt64();
dir.ParentDirOffset = m_input.ReadInt64();
dir.FileCount = (int)m_input.ReadInt64();
dir.FileTable = m_input.ReadInt64();
var dir = new DxDirectory
{
DirOffset = m_input.ReadInt64(),
ParentDirOffset = m_input.ReadInt64(),
FileCount = (int)m_input.ReadInt64(),
FileTable = m_input.ReadInt64()
};
return dir;
}
@@ -232,6 +223,7 @@ namespace GameRes.Formats.DxLib
entry.UnpackedSize = (uint)size;
entry.IsPacked = -1 != packed_size;
entry.HuffmanCompressed = -1 != huffman_packed_size;
entry.HuffmanSize = (uint)huffman_packed_size;
if (entry.IsPacked)
entry.Size = (uint)(huffman_packed_size!=-1 ? huffman_packed_size:packed_size);
else