GARbro-mirror/ArcFormats/Mnp/ArcMMA.cs

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2018-07-06 19:24:29 +08:00
//! \file ArcMMA.cs
//! \date 2018 Jun 03
//! \brief MNP 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;
using System.Windows.Media;
using GameRes.Utility;
// [030425][Chise] Izayoi Renka
namespace GameRes.Formats.Mnp
{
internal class MmaEntry : PackedEntry
{
public uint HeaderSize;
public uint Flags;
}
[Export(typeof(ArchiveFormat))]
public class MmaOpener : ArchiveFormat
{
public override string Tag { get { return "MMA"; } }
public override string Description { get { return "MNP engine resource archive"; } }
public override uint Signature { get { return 0x21435241; } } // 'ARC!'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
int version = file.View.ReadInt32 (0xC);
if (version != 1)
return null;
int count = file.View.ReadInt32 (0x10);
if (!IsSaneCount (count))
return null;
uint index_offset = file.View.ReadUInt32 (4);
if (index_offset >= file.MaxOffset)
return null;
var base_name = Path.GetFileNameWithoutExtension (file.Name);
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var entry = new MmaEntry {
Name = string.Format ("{0}#{1:D5}", base_name, i),
Offset = file.View.ReadUInt32 (index_offset),
UnpackedSize = file.View.ReadUInt32 (index_offset+4),
Size = file.View.ReadUInt32 (index_offset+8),
HeaderSize = file.View.ReadUInt32 (index_offset+0x0C),
Flags = file.View.ReadUInt32 (index_offset+0x10),
};
if (!entry.CheckPlacement (file.MaxOffset))
return null;
switch (entry.Flags & 0x38)
{
case 8:
case 0x10:
case 0x18:
case 0x38:
entry.Type = "image";
break;
default:
if (0x2D == entry.Flags)
entry.Type = "audio";
break;
}
dir.Add (entry);
index_offset += 0x14;
}
var list_entry = dir[0] as MmaEntry;
if (0x2F == list_entry.Flags)
{
ReadMmaList (file, dir, list_entry);
}
return new ArcFile (file, this, dir);
}
void ReadMmaList (ArcView file, List<Entry> dir, MmaEntry index_entry)
{
using (var packed = file.CreateStream (index_entry.Offset, index_entry.Size))
using (var unpacked = UnpackEntry (packed, index_entry))
using (var index = new StreamReader (unpacked, Encodings.cp932))
{
for (int i = 0; i < dir.Count; ++i)
{
int type = index.Read();
if (-1 == type)
break;
var name = index.ReadLine();
if (null == name)
break;
dir[i].Name = Path.GetFileName (name);
}
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var ment = entry as MmaEntry;
if (null == ment)
return base.OpenEntry (arc, entry);
var input = arc.File.CreateStream (entry.Offset, entry.Size);
return UnpackEntry (input, ment);
}
Stream UnpackEntry (IBinaryStream input, MmaEntry entry)
{
uint flags = entry.Flags & 6;
if (6 == flags && 0 == entry.HeaderSize)
{
using (input)
{
var data = new byte[entry.UnpackedSize];
UnpackLz (input, data, 0);
return new BinMemoryStream (data, entry.Name);
}
}
else if (4 == flags)
{
using (input)
{
input.Position = (int)entry.HeaderSize;
var data = input.ReadBytes ((int)entry.UnpackedSize);
Decrypt (data, 0, data.Length);
return new BinMemoryStream (data, entry.Name);
}
}
return input.AsStream;
}
public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
{
var ment = (MmaEntry)entry;
IBinaryStream input;
switch (ment.Flags & 0x38)
{
case 8:
input = arc.File.CreateStream (entry.Offset, entry.Size);
return new MmeImageDecoder (input, ment);
case 0x10:
case 0x18:
input = arc.File.CreateStream (entry.Offset, entry.Size);
return new MmeMaskDecoder (input, ment);
default:
return base.OpenImage (arc, entry);
}
}
internal static void Decrypt (byte[] data, int offset, int length)
{
for (int i = 0; i < length; ++i)
{
byte x = (byte)(data[offset+i] ^ DefaultKey[i & 0xF]);
data[offset+i] = Binary.RotByteR (x, 3);
}
}
internal static void UnpackLz (IBinaryStream input, byte[] output, int dst = 0)
{
byte id = input.ReadUInt8();
if (id != 0xC0)
{
if (id != 0)
throw new InvalidFormatException();
input.Read (output, 0, output.Length);
return;
}
int ctl = 0;
int mask = 0;
while (dst < output.Length)
{
if (0 == mask)
{
ctl = input.ReadByte();
if (-1 == ctl)
break;
mask = 0x80;
}
if ((ctl & mask) != 0)
{
int offset = input.ReadUInt8() << 8;
offset |= input.ReadUInt8();
int count = (offset & 0x1F) + 3;
offset = (offset >> 5) + 1;
Binary.CopyOverlapped (output, dst - offset, dst, count);
dst += count;
}
else
{
output[dst++] = input.ReadUInt8();
}
mask >>= 1;
}
}
static readonly string DefaultKey = "ghTuEiAdjSwElTek";
}
internal class MmeBaseDecoder : BinaryImageDecoder
{
protected byte[] m_output;
protected int m_header_size;
protected uint m_flags;
protected int m_stride;
public PixelFormat Format { get; protected set; }
protected MmeBaseDecoder (IBinaryStream input, MmaEntry entry) : base (input)
{
m_header_size = (int)entry.HeaderSize;
m_flags = entry.Flags;
}
protected override ImageData GetImageData ()
{
m_input.Position = m_header_size;
switch (m_flags & 6)
{
case 2:
m_input.Read (m_output, 0, m_output.Length);
break;
case 4:
Decrypt();
break;
case 6:
MmaOpener.UnpackLz (m_input, m_output, 0);
break;
default:
throw new InvalidFormatException();
}
return ImageData.Create (Info, Format, null, m_output, m_stride);
}
internal void Decrypt ()
{
m_input.Read (m_output, 0, m_output.Length);
MmaOpener.Decrypt (m_output, m_header_size, m_output.Length - m_header_size);
}
}
internal class MmeImageDecoder : MmeBaseDecoder
{
int m_width;
int m_height;
int m_bpp;
public MmeImageDecoder (IBinaryStream input, MmaEntry entry) : base (input, entry)
{
m_width = m_input.ReadInt32();
m_height = m_input.ReadInt32();
m_bpp = m_input.ReadInt32();
m_stride = m_input.ReadInt32();
Info = new ImageMetaData {
Width = (uint)m_width,
Height = (uint)m_height,
BPP = m_bpp,
};
m_output = new byte[entry.UnpackedSize];
if (24 == m_bpp)
Format = PixelFormats.Bgr24;
else
Format = PixelFormats.Bgr32;
}
}
internal class MmeMaskDecoder : MmeBaseDecoder
{
int m_width;
int m_height;
public MmeMaskDecoder (IBinaryStream input, MmaEntry entry) : base (input, entry)
{
m_width = m_input.ReadInt32();
m_height = m_input.ReadInt32();
m_stride = m_width;
Info = new ImageMetaData {
Width = (uint)m_width,
Height = (uint)m_height,
BPP = 8,
};
m_output = new byte[entry.UnpackedSize];
Format = PixelFormats.Gray8;
}
}
}