GARbro-mirror/ArcFormats/DDSystem/ArcDDP.cs

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2016-07-28 08:54:42 +08:00
//! \file ArcDDP.cs
//! \date Wed Jul 27 13:21:01 2016
//! \brief DDSystem resource archive.
//
// Copyright (C) 2016 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;
using System.Linq;
using GameRes.Formats.SHSystem;
using GameRes.Utility;
namespace GameRes.Formats.DDSystem
{
[Export(typeof(ArchiveFormat))]
public class Ddp2Opener : ArchiveFormat
{
public override string Tag { get { return "DDP2"; } }
public override string Description { get { return "DDSystem engine resource archive"; } }
public override uint Signature { get { return 0x32504444; } } // 'DDP2'
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public Ddp2Opener ()
{
Extensions = new string[] { "dat" };
}
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (4);
if (!IsSaneCount (count))
return null;
var base_name = Path.GetFileNameWithoutExtension (file.Name);
uint index_offset = 0x20;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new PackedEntry {
Offset = file.View.ReadUInt32 (index_offset),
UnpackedSize = file.View.ReadUInt32 (index_offset+4),
Size = file.View.ReadUInt32 (index_offset+8),
Name = string.Format ("{0}#{1:D5}", base_name, i),
};
entry.IsPacked = entry.Size != 0;
if (!entry.IsPacked)
entry.Size = entry.UnpackedSize;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
index_offset += 0x10;
dir.Add (entry);
}
DetectFileTypes (file, dir);
return new ArcFile (file, this, dir);
}
internal static void DetectFileTypes (ArcView file, List<Entry> dir)
{
byte[] signature_buffer = new byte[4];
foreach (PackedEntry entry in dir)
{
uint signature;
if (entry.IsPacked)
{
using (var input = file.CreateStream (entry.Offset, Math.Min (entry.Size, 0x20u)))
using (var reader = new ShsCompression (input))
{
reader.Unpack (signature_buffer);
signature = LittleEndian.ToUInt32 (signature_buffer, 0);
}
}
else
{
signature = file.View.ReadUInt32 (entry.Offset);
}
if (0x78534444 == signature) // 'DDSx'
{
entry.Type = "script";
entry.Name = Path.ChangeExtension (entry.Name, "hxb");
}
else if (0 != signature)
{
IResource res;
if (0x020000 == signature || 0x0A0000 == signature)
res = ImageFormat.Tga;
else
res = AutoEntry.DetectFileType (signature);
if (res != null)
{
entry.Type = res.Type;
var ext = res.Extensions.FirstOrDefault();
if (!string.IsNullOrEmpty (ext))
entry.Name = Path.ChangeExtension (entry.Name, ext);
}
}
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
var pent = entry as PackedEntry;
if (null == pent || !pent.IsPacked)
return input;
var data = new byte[pent.UnpackedSize];
using (var reader = new ShsCompression (input))
{
reader.Unpack (data);
if (data.Length > 16 && Binary.AsciiEqual (data, 0, "DDSxHXB"))
DecryptHxb (data);
return new MemoryStream (data);
}
}
internal void DecryptHxb (byte[] data)
{
int length = data[8] << 16 | data[9] << 8 | data[10];
if (length != data.Length)
return;
int key = (((length << 5) ^ 0xA5) * (length + 0x6F349)) ^ 0x34A9B129;
var key_bits = new byte[4];
LittleEndian.Pack (key, key_bits, 0);
for (int i = 0x10; i < data.Length; ++i)
{
data[i] ^= key_bits[i & 3];
}
}
}
[Export(typeof(ArchiveFormat))]
public class Ddp3Opener : Ddp2Opener
{
public override string Tag { get { return "DDP3"; } }
public override string Description { get { return "DDSystem engine resource archive"; } }
public override uint Signature { get { return 0x33504444; } } // 'DDP3'
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (4);
if (!IsSaneCount (count))
return null;
var index = Him5Opener.ReadIndex (file, 0x20, count);
var dir = new List<Entry>();
foreach (var section in index)
{
int index_offset = section.Item1;
for (int section_size = section.Item2; section_size > 0; )
{
int entry_size = file.View.ReadByte (index_offset);
if (entry_size < 17)
break;
var entry = new PackedEntry {
Offset = file.View.ReadUInt32 (index_offset+1),
UnpackedSize = file.View.ReadUInt32 (index_offset+5),
Size = file.View.ReadUInt32 (index_offset+9),
Name = file.View.ReadString (index_offset+17, (uint)entry_size-17),
};
entry.IsPacked = entry.Size != 0;
if (!entry.IsPacked)
entry.Size = entry.UnpackedSize;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
index_offset += entry_size;
section_size -= entry_size;
dir.Add (entry);
}
}
DetectFileTypes (file, dir);
return new ArcFile (file, this, dir);
}
}
}