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implemented 'GML_ARC' archives.

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morkt 2018-09-11 17:46:15 +04:00
parent f858e0807d
commit f8a8b4b27a
2 changed files with 157 additions and 0 deletions
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1
ArcFormats/ArcFormats.csproj
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@ -166,6 +166,7 @@
<Compile Include="FC01\ImageWM2.cs" />
<Compile Include="FC01\ImageWMK.cs" />
<Compile Include="FrontWing\ArcVAV.cs" />
<Compile Include="GLib\ArcG.cs" />
<Compile Include="Groover\ArcPCG.cs" />
<Compile Include="Gss\ArcARC.cs" />
<Compile Include="HCSystem\ArcPAK.cs" />

156
ArcFormats/GLib/ArcG.cs Normal file
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@ -0,0 +1,156 @@
//! \file ArcG.cs
//! \date 2018 Jul 10
//! \brief GLib engine resource archive.
//
// Copyright (C) 2018 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
namespace GameRes.Formats.GLib
{
internal class GmlArchive : ArcFile
{
public readonly byte[] Key;
public GmlArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte[] key)
: base (arc, impl, dir)
{
Key = key;
}
}
internal class GmlEntry : Entry
{
public byte[] Header;
}
[Export(typeof(ArchiveFormat))]
public class GOpener : ArchiveFormat
{
public override string Tag { get { return "G/GML"; } }
public override string Description { get { return "GLib engine resource archive"; } }
public override uint Signature { get { return 0x5F4C4D47; } } // 'GML_'
public override bool IsHierarchic { get { return true; } }
public override bool CanWrite { get { return false; } }
public GOpener ()
{
Extensions = new string[] { "g", "xp" };
}
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (4, "ARC\0"))
return null;
uint data_offset = file.View.ReadUInt32 (8);
uint unpacked_size = file.View.ReadUInt32 (0xC);
uint packed_size = file.View.ReadUInt32 (0x10);
byte[] unpacked = new byte[unpacked_size];
using (var packed = file.CreateStream (0x14, packed_size))
using (var input = new XoredStream (packed, 0xFF))
{
LzssUnpack (input, unpacked);
}
using (var index = new BinMemoryStream (unpacked))
{
var key = index.ReadBytes (256);
int count = index.ReadInt32();
if (!IsSaneCount (count))
return null;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
int name_length = index.ReadInt32();
var name = index.ReadCString (name_length);
var entry = FormatCatalog.Instance.Create<GmlEntry> (name);
entry.Offset = index.ReadUInt32() + data_offset;
entry.Size = index.ReadUInt32();
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
entry.Header = index.ReadBytes (4);
}
return new GmlArchive (file, this, dir, key);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var garc = arc as GmlArchive;
var gent = entry as GmlEntry;
if (null == garc || null == gent)
return base.OpenEntry (arc, entry);
var data = garc.File.View.ReadBytes (entry.Offset, entry.Size);
for (int i = gent.Header.Length; i < data.Length; ++i)
data[i] = garc.Key[data[i]];
Buffer.BlockCopy (gent.Header, 0, data, 0, gent.Header.Length);
return new BinMemoryStream (data, entry.Name);
}
internal static void LzssUnpack (Stream input, byte[] output)
{
const int frame_mask = 0xFFF;
byte[] frame = new byte[0x1000];
int frame_pos = 0xFEE;
int dst = 0;
int ctl = 2;
while (dst < output.Length)
{
ctl >>= 1;
if (1 == ctl)
{
ctl = input.ReadByte();
if (-1 == ctl)
break;
ctl |= 0x100;
}
if (0 != (ctl & 1))
{
int b = input.ReadByte();
if (-1 == b)
break;
output[dst++] = frame[frame_pos++ & frame_mask] = (byte)b;
}
else
{
int lo = input.ReadByte();
if (-1 == lo)
break;
int hi = input.ReadByte();
if (-1 == hi)
break;
int offset = (hi & 0xf0) << 4 | lo;
int count = Math.Min ((~hi & 0xF) + 3, output.Length-dst);
while (count --> 0)
{
byte v = frame[offset++ & frame_mask];
frame[frame_pos++ & frame_mask] = v;
output[dst++] = v;
}
}
}
}
}
}