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2023-09-07 12:15:29 +04:00
//! \file ArcARC.cs
//! \date 2023 Aug 26
//! \brief Kogado resource archive.
//
// Copyright (C) 2023 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 GameRes.Compression;
using GameRes.Formats.DirectDraw;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Text;
using System.Windows.Media;
// [070302][G-mode] Keitai Shoujo
namespace GameRes.Formats.Kogado
{
[Export(typeof(ArchiveFormat))]
public class ArcOpener : ArchiveFormat
{
public override string Tag { get => "ARC/KOGADO"; }
public override string Description { get => "Kogado engine resource archive"; }
public override uint Signature { get => 0xA8BCADBE; } // 'ARCW' ^ 0xFFFFFFFF
public override bool IsHierarchic { get => true; }
public override bool CanWrite { get => false; }
public override ArcFile TryOpen (ArcView file)
{
using (var reader = new ArcIndexReader (file))
{
var dir = reader.ReadIndex();
return new ArcFile(file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
input = new XoredStream (input, 0xFF);
var ova = entry as OvaEntry;
if (ova != null)
return new PrefixStream (ova.Header, input);
var pent = entry as PackedEntry;
if (null == pent || !pent.IsPacked)
return input;
return new LimitStream (new LzssStream (input), pent.UnpackedSize);
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var dds = entry as DdsEntry;
if (null == dds)
return base.OpenImage (arc, entry);
var input = this.OpenEntry (arc, entry);
return new ImageDecoder (input, dds.Info);
}
}
internal class OvaEntry : PackedEntry
{
public byte[] Header;
}
internal class DdsEntry : PackedEntry
{
public DdsInfo Info;
}
internal class DdsInfo : ImageMetaData
{
public DdsPF Flags;
}
internal sealed class ArcIndexReader : IDisposable
{
IBinaryStream m_input;
uint m_base_offset;
long m_max_offset;
public ArcIndexReader (ArcView arc)
{
m_base_offset = arc.View.ReadUInt32 (0xC);
m_max_offset = arc.MaxOffset;
m_input = arc.CreateStream();
}
byte[] m_filenames;
byte[] m_index;
List<Entry> m_dir;
public List<Entry> ReadIndex ()
{
m_input.Position = 0x10;
m_filenames = ReadChunk();
m_index = ReadChunk();
m_dir = new List<Entry>();
int section_count = m_index.ToInt32 (0);
int pos = 4;
for (int i = 0; i < section_count; ++i)
{
int count = m_index.ToInt32 (pos+8);
if (m_dir.Capacity < m_dir.Count + count)
m_dir.Capacity = m_dir.Count + count;
int section_size = m_index.ToInt32 (pos+0xC);
int name_pos = pos + 0x10;
int layout_pos = name_pos + 4 * count;
if (m_index.AsciiEqual (pos, "DDS\0"))
ReadDdsSection (name_pos, layout_pos, count);
else if (m_index.AsciiEqual (pos, "OVA\0"))
ReadOvaSection (name_pos, layout_pos, count);
else
ReadSection (name_pos, layout_pos, count);
pos += 0x10 + section_size;
}
return m_dir;
}
void ReadSection (int name_pos, int layout_pos, int count)
{
for (int j = 0; j < count; ++j)
{
var name = ReadFileName (m_index.ToInt32 (name_pos));
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = m_index.ToUInt32 (layout_pos) + m_base_offset;
entry.Size = m_index.ToUInt32 (layout_pos+4);
entry.UnpackedSize = m_index.ToUInt32 (layout_pos+0xC);
entry.IsPacked = true;
if (!entry.CheckPlacement (m_max_offset+0x14))
throw new InvalidFormatException();
m_dir.Add (entry);
name_pos += 4;
layout_pos += 0x10;
}
}
void ReadDdsSection (int name_pos, int layout_pos, int count)
{
int header_count = m_index.ToInt32 (layout_pos);
var headers = new DdsInfo[header_count];
layout_pos += 4;
for (int i = 0; i < header_count; ++i)
{
headers[i] = new DdsInfo {
Width = m_index.ToUInt32 (layout_pos+4),
Height = m_index.ToUInt32 (layout_pos+8),
BPP = 32,
Flags = (DdsPF)m_index.ToUInt32 (layout_pos),
};
layout_pos += 0xC;
}
for (int j = 0; j < count; ++j)
{
var name = ReadFileName (m_index.ToInt32 (name_pos));
var entry = FormatCatalog.Instance.Create<DdsEntry> (name);
entry.Offset = m_index.ToUInt32 (layout_pos) + m_base_offset;
entry.Size = m_index.ToUInt32 (layout_pos+4);
entry.UnpackedSize = m_index.ToUInt32 (layout_pos+0xC);
int header_id = m_index.ToInt32 (layout_pos+0x10);
entry.Info = headers[header_id];
entry.IsPacked = true;
if (!entry.CheckPlacement (m_max_offset+0x14))
throw new InvalidFormatException();
m_dir.Add (entry);
name_pos += 4;
layout_pos += 0x14;
}
}
void ReadOvaSection (int name_pos, int layout_pos, int count)
{
int header_count = m_index.ToInt32 (layout_pos+4);
var headers = new byte[header_count][];
layout_pos += 8;
for (int i = 0; i < header_count; ++i)
{
int header_len = m_index.ToInt32 (layout_pos+8);
int header_pos = layout_pos + 12;
headers[i] = new CowArray<byte> (m_index, header_pos, header_len).ToArray();
layout_pos = header_pos + header_len;
}
for (int j = 0; j < count; ++j)
{
var name = ReadFileName (m_index.ToInt32 (name_pos));
var entry = FormatCatalog.Instance.Create<OvaEntry> (name);
entry.Offset = m_index.ToUInt32 (layout_pos) + m_base_offset;
entry.UnpackedSize = m_index.ToUInt32 (layout_pos+4);
int header_id = m_index.ToInt32 (layout_pos+8);
entry.Header = headers[header_id];
entry.Size = entry.UnpackedSize - (uint)entry.Header.Length;
entry.IsPacked = true;
if (!entry.CheckPlacement (m_max_offset))
throw new InvalidFormatException();
m_dir.Add (entry);
name_pos += 4;
layout_pos += 0xC;
}
}
string ReadFileName (int pos)
{
int i;
for (i = pos; i+1 < m_filenames.Length; i += 2)
{
if (m_filenames[i] == 0 && m_filenames[i+1] == 0)
break;
}
return Encoding.Unicode.GetString (m_filenames, pos, i - pos);
}
byte[] ReadChunk ()
{
long start_pos = m_input.Position;
int size = m_input.ReadInt32();
int type = m_input.ReadInt32();
int unpacked_size = m_input.ReadInt32();
if (size <= 0 || unpacked_size <= 0)
throw new InvalidFormatException();
var data = new byte[unpacked_size];
using (var decrypted = new XoredStream (m_input.AsStream, 0xFF, true))
using (var lzss = new LzssStream (decrypted))
{
lzss.Read (data, 0, data.Length);
}
m_input.Position = start_pos + size;
return data;
}
#region IDisposable Members
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
m_input.Dispose();
_disposed = true;
}
GC.SuppressFinalize (this);
}
#endregion
}
internal sealed class ImageDecoder : IImageDecoder
{
Stream m_input;
ImageData m_image;
public Stream Source => m_input;
public ImageFormat SourceFormat => null;
public PixelFormat Format { get; private set; }
public ImageMetaData Info { get; private set; }
public ImageData Image => m_image ?? (m_image = GetImageData());
public ImageDecoder (Stream input, DdsInfo info)
{
m_input = input;
Info = info;
Format = info.Flags.HasFlag (DdsPF.AlphaPixels) ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
}
private ImageData GetImageData ()
{
var pixels = new byte[Info.iWidth * Info.iHeight * 4];
m_input.Read (pixels, 0, pixels.Length);
return ImageData.Create (Info, Format, null, pixels);
}
#region IDisposable members
bool m_disposed = false;
public void Dispose ()
{
if (!m_disposed)
{
m_input.Dispose();
m_disposed = true;
}
GC.SuppressFinalize (this);
}
#endregion
}
}