GARbro-mirror/ArcFormats/Valkyria/ArcODN.cs

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//! \file ArcODN.cs
//! \date Thu Nov 24 05:30:12 2016
//! \brief Valkyria 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.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Media;
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using GameRes.Formats.Strings;
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using GameRes.Utility;
namespace GameRes.Formats.Valkyria
{
internal class ValkScheme
{
public string ExeName;
public string Title;
public int ImageDim;
}
internal class OdnArchive : ArcFile
{
public readonly ValkScheme Scheme;
public OdnArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, ValkScheme scheme)
: base (arc, impl, dir)
{
Scheme = scheme;
}
}
[Export(typeof(ArchiveFormat))]
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sealed public class OdnOpener : ArchiveFormat
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{
public override string Tag { get { return "ODN"; } }
public override string Description { get { return "Valkyria resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
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public OdnOpener ()
{
Settings = new[] { AudioSampleRate };
}
FixedSetSetting AudioSampleRate = new FixedSetSetting (Properties.Settings.Default) {
Name = "ODNAudioSampleRate",
Text = arcStrings.ODNAudioSampleRate,
ValuesSet = new[] { 22050u, 44100u },
};
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public override ArcFile TryOpen (ArcView file)
{
if (!file.Name.HasExtension (".odn"))
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return null;
var reader = new OdnIndexReader (file);
var dir = reader.ReadIndex();
if (null == dir)
return null;
/*
var sys_ini = VFS.CombinePath (VFS.GetDirectoryName (file.Name), "system.ini");
if (VFS.FileExists (sys_ini))
{
try
{
using (var ini = new IniReader (sys_ini))
{
var scheme = ini.ReadScheme();
return new OdnArchive (file, this, dir, scheme);
}
}
catch { }
}
*/
return new ArcFile (file, this, dir);
}
internal static readonly Regex Image24NameRe = new Regex ("^(?:back|phii)");
internal static readonly Regex Image32NameRe = new Regex ("^(?:data|codn|cccc)");
internal static readonly Regex ScriptNameRe = new Regex ("^(?:scrp|menu|sysm)");
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internal static readonly Regex AudioNameRe = new Regex ("^hime");
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public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (ScriptNameRe.IsMatch (entry.Name))
{
byte key = (byte)~entry.Offset;
var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
Decrypt (data, data.Length, key);
return new BinMemoryStream (data);
}
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if (AudioNameRe.IsMatch (entry.Name))
{
using (var wav = new MemoryStream (0x2C))
{
var format = new WaveFormat {
FormatTag = 1,
Channels = 1,
SamplesPerSecond = AudioSampleRate.Get<uint>(),
BlockAlign = 2,
BitsPerSample = 16,
};
format.SetBPS();
WaveAudio.WriteRiffHeader (wav, format, entry.Size);
var header = wav.ToArray();
var data = arc.File.CreateStream (entry.Offset, entry.Size);
return new PrefixStream (header, data);
}
}
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var input = arc.File.CreateStream (entry.Offset, entry.Size);
if (0x5E6A6A42 == input.Signature)
{
return new XoredStream (input, 0xD);
}
return input;
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
using (var input = arc.File.CreateStream (entry.Offset, entry.Size))
{
int pixel_size;
if (Image24NameRe.IsMatch (entry.Name))
pixel_size = 3;
else
pixel_size = 4;
var output = new MemoryStream ((int)entry.Size);
try
{
UnpackImage (input, output, pixel_size);
return CreateImageDecoder (output, pixel_size);
}
catch { /* try different pixel size */ }
try
{
pixel_size ^= 7;
input.Position = 0;
output.SetLength (0);
UnpackImage (input, output, pixel_size);
return CreateImageDecoder (output, pixel_size);
}
catch
{
output.Dispose();
throw;
}
}
}
internal static byte Decrypt (byte[] data, int size, byte key)
{
for (int i = 0; i < size; ++i)
data[i] ^= key--;
return key;
}
static readonly Size[] ImageDimensions = new Size[]
{
new Size (1024, 768),
new Size (800, 600),
new Size (640, 480),
new Size (400, 200),
};
void UnpackImage (IBinaryStream input, Stream output, int pixel_size)
{
var max_output_size = ImageDimensions[0].Width * ImageDimensions[0].Height * pixel_size;
var pixel = new byte[pixel_size];
int ctl = 1;
for (;;)
{
if (1 == ctl)
{
ctl = input.ReadByte();
if (-1 == ctl)
break;
ctl |= 0x100;
}
if (pixel.Length != input.Read (pixel, 0, pixel.Length))
break;
int count = 0;
if (0 != (ctl & 1))
count = Binary.BigEndian (input.ReadUInt16());
for (int i = 0; i <= count; ++i)
output.Write (pixel, 0, pixel.Length);
if (output.Length > max_output_size)
throw new InvalidFormatException();
ctl >>= 1;
}
output.Position = 0;
}
IImageDecoder CreateImageDecoder (Stream image, int pixel_size)
{
var size = ImageDimensions.First (s => s.Width * s.Height * pixel_size == image.Length);
var info = new ImageMetaData {
Width = (uint)size.Width,
Height = (uint)size.Height,
BPP = pixel_size * 8,
};
return new OdnImageDecoder (image, info);
}
}
internal sealed class OdnIndexReader
{
ArcView m_file;
byte[] m_entry_buf = new byte[0x20];
List<Entry> m_dir = new List<Entry>();
Encoding m_enc;
public OdnIndexReader (ArcView file)
{
m_file = file;
m_enc = Encoding.ASCII.WithFatalFallback();
}
public List<Entry> ReadIndex ()
{
m_file.View.Read (0, m_entry_buf, 0, 0x1C);
if (m_entry_buf.AsciiEqual (8, "00000000"))
{
ReadV1();
}
else if (IsAscii (m_entry_buf, 0x10))
{
var name = m_enc.GetString (m_entry_buf, 0, 4);
if (m_entry_buf.AsciiEqual (0x10, name))
ReadV2 (0x10);
else if (m_entry_buf.AsciiEqual (0x18, name))
ReadV2 (0x18);
}
else
{
var key = OdnOpener.Decrypt (m_entry_buf, 0x10, 0xFF);
if (m_entry_buf.AsciiEqual (8, "00000000"))
ReadEncrypted (key);
}
if (0 == m_dir.Count)
return null;
FixupDir();
return m_dir;
}
void ReadV1 ()
{
uint index_offset = 0;
for (;;)
{
if (0x10 != m_file.View.Read (index_offset, m_entry_buf, 0, 0x10))
throw new InvalidFormatException();
index_offset += 0x10;
if (m_entry_buf.AsciiEqual (0, "END_ffffffffffff"))
break;
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else if (m_entry_buf.AsciiEqual (0, "HIME_END"))
{
index_offset += 8;
break;
}
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var name = m_enc.GetString (m_entry_buf, 0, 8);
var offset = m_enc.GetString (m_entry_buf, 8, 8);
var entry = new Entry { Name = name, Offset = Convert.ToUInt32 (offset, 16) };
m_dir.Add (entry);
}
foreach (var entry in m_dir)
entry.Offset += index_offset;
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if (m_dir.Any() && m_dir[m_dir.Count-1].Offset == m_file.MaxOffset)
m_dir.RemoveAt (m_dir.Count-1);
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}
void ReadV2 (uint record_size)
{
uint index_offset = 0;
var first_offset_str = m_enc.GetString (m_entry_buf, 8, 8);
uint first_offset = Convert.ToUInt32 (first_offset_str, 16);
while (index_offset < first_offset)
{
var offset_str = m_enc.GetString (m_entry_buf, 8, 8);
var offset = Convert.ToUInt32 (offset_str, 16);
if (m_file.MaxOffset == offset)
break;
var name = m_enc.GetString (m_entry_buf, 0, 8);
var entry = new Entry { Name = name, Offset = offset };
m_dir.Add (entry);
index_offset += record_size;
if (record_size != m_file.View.Read (index_offset, m_entry_buf, 0, record_size))
throw new InvalidFormatException();
}
}
void ReadEncrypted (byte key)
{
uint index_offset = 0;
for (;;)
{
index_offset += 0x10;
if (m_entry_buf.AsciiEqual (0, "ffffffffffffffff"))
break;
var name = m_enc.GetString (m_entry_buf, 0, 8);
var offset = m_enc.GetString (m_entry_buf, 8, 8);
var entry = new Entry { Name = name, Offset = Convert.ToUInt32 (offset, 16) };
m_dir.Add (entry);
if (0x10 != m_file.View.Read (index_offset, m_entry_buf, 0, 0x10))
throw new InvalidFormatException();
key = OdnOpener.Decrypt (m_entry_buf, 0x10, key);
}
foreach (var entry in m_dir)
entry.Offset += index_offset;
}
static bool IsAscii (byte[] data, int length)
{
for (int i = 0; i < length; ++i)
if (data[i] < 0x20 || data[i] > 0x7E)
return false;
return true;
}
void FixupDir ()
{
for (int i = 0; i < m_dir.Count; ++i)
{
var entry = m_dir[i];
long next_offset = i+1 < m_dir.Count ? m_dir[i+1].Offset : m_file.MaxOffset;
entry.Size = (uint)(next_offset - entry.Offset);
if (OdnOpener.Image24NameRe.IsMatch (entry.Name))
{
entry.Type = "image";
}
else if (OdnOpener.ScriptNameRe.IsMatch (entry.Name))
{
entry.Type = "script";
}
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else if (OdnOpener.AudioNameRe.IsMatch (entry.Name))
{
entry.Type = "audio";
}
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else if (entry.Size > 4)
{
var signature = m_file.View.ReadUInt32 (entry.Offset);
IResource res = null;
if (0x5E6A6A42 == signature)
res = OggAudio.Instance;
else
res = AutoEntry.DetectFileType (signature);
if (res != null)
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entry.ChangeType (res);
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else if (OdnOpener.Image32NameRe.IsMatch (entry.Name))
entry.Type = "image";
}
}
}
}
internal sealed class IniReader : IDisposable
{
IBinaryStream m_ini;
public IniReader (string ini_name)
{
m_ini = VFS.OpenBinaryStream (ini_name);
}
public ValkScheme ReadScheme ()
{
m_ini.Position = 0;
var exe_name = ReadString();
var title = ReadString();
return new ValkScheme
{
ExeName = exe_name,
Title = title,
ImageDim = m_ini.ReadByte(),
};
}
string ReadString ()
{
var len_str = m_ini.ReadCString (4);
int length = Convert.ToInt32 (len_str);
var buf = m_ini.ReadBytes (length);
if (buf.Length != length)
throw new InvalidFormatException();
for (int i = 0; i < length; ++i)
buf[i] ^= 0xD1;
return Encodings.cp932.GetString (buf);
}
#region IDisposable Members
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
m_ini.Dispose();
_disposed = true;
}
}
#endregion
}
internal sealed class OdnImageDecoder : IImageDecoder
{
ImageData m_data;
public ImageFormat SourceFormat { get { return null; } }
public Stream Source { get; private set; }
public ImageMetaData Info { get; private set; }
public PixelFormat Format { get; private set; }
public ImageData Image
{
get
{
if (null == m_data)
{
int stride = (int)Info.Width * Info.BPP / 8;
var pixels = new byte[stride * (int)Info.Height];
Source.Read (pixels, 0, pixels.Length);
m_data = ImageData.CreateFlipped (Info, Format, null, pixels, stride);
}
return m_data;
}
}
public OdnImageDecoder (Stream input, ImageMetaData info)
{
Source = input;
Info = info;
if (32 == info.BPP)
Format = PixelFormats.Bgra32;
else
Format = PixelFormats.Bgr24;
}
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
Source.Dispose();
_disposed = true;
}
}
}
}