GARbro-mirror/ArcFormats/ImageRCT.cs

404 lines
15 KiB
C#

//! \file ImageRCT.cs
//! \date Fri Aug 01 11:36:31 2014
//! \brief RCT/RC8 image format implementation.
//
// Copyright (C) 2014 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.IO;
using System.Text;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Diagnostics;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using GameRes.Formats.Strings;
namespace GameRes.Formats.Majiro
{
internal class RctMetaData : ImageMetaData
{
public int Version;
public bool IsEncrypted;
public uint DataOffset;
public uint DataSize;
public uint AddSize;
}
[Export(typeof(ImageFormat))]
public class RctFormat : ImageFormat
{
public override string Tag { get { return "RCT"; } }
public override string Description { get { return "Majiro game engine RGB image format"; } }
public override uint Signature { get { return 0x9a925a98; } }
public override ImageMetaData ReadMetaData (Stream stream)
{
stream.Position = 4;
int id = stream.ReadByte();
if (0x54 != id)
return null;
int encryption = stream.ReadByte();
if (encryption != 0x43 && encryption != 0x53)
return null;
bool is_encrypted = 0x53 == encryption;
int version = stream.ReadByte();
if (0x30 != version)
return null;
version = stream.ReadByte() - 0x30;
if (version != 0 && version != 1)
return null;
using (var reader = new BinaryReader (stream, Encoding.ASCII, true))
{
uint width = reader.ReadUInt32();
uint height = reader.ReadUInt32();
uint data_size = reader.ReadUInt32();
uint additional_size = 0;
if (1 == version)
{
additional_size = reader.ReadUInt16();
}
if (width > 0x8000 || height > 0x8000)
return null;
return new RctMetaData
{
Width = width,
Height = height,
OffsetX = 0,
OffsetY = 0,
BPP = 24,
Version = version,
IsEncrypted = is_encrypted,
DataOffset = (uint)stream.Position,
DataSize = data_size,
AddSize = additional_size,
};
}
}
public override ImageData Read (Stream file, ImageMetaData info)
{
var meta = info as RctMetaData;
if (null == meta)
throw new ArgumentException ("RctFormat.Read should be supplied with RctMetaData", "info");
if (meta.AddSize > 0)
{
Trace.WriteLine (string.Format ("{0} bytes of additional data", meta.AddSize), "RctFormat.Read");
file.Position = meta.DataOffset;
byte[] data = new byte[meta.AddSize];
if (data.Length != file.Read (data, 0, data.Length))
return null;
}
file.Position = meta.DataOffset + meta.AddSize;
if (meta.IsEncrypted)
{
throw new NotImplementedException ("RCT image decryption is not implemented");
}
using (var reader = new Reader (file, meta))
{
reader.Unpack();
byte[] pixels = reader.Data;
var bitmap = BitmapSource.Create ((int)meta.Width, (int)meta.Height, 96, 96,
PixelFormats.Bgr24, null, pixels, (int)meta.Width*3);
bitmap.Freeze();
return new ImageData (bitmap, meta);
}
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("RctFormat.Write is not implemented.");
}
internal class Reader : IDisposable
{
private BinaryReader m_input;
private uint m_width;
private byte[] m_data;
public byte[] Data { get { return m_data; } }
public Reader (Stream file, RctMetaData info)
{
m_width = info.Width;
m_data = new byte[m_width * info.Height * 3];
m_input = new BinaryReader (file, Encoding.ASCII, true);
}
private static readonly sbyte[] ShiftTable = new sbyte[] {
-16, -32, -48, -64, -80, -96,
49, 33, 17, 1, -15, -31, -47,
50, 34, 18, 2, -14, -30, -46,
51, 35, 19, 3, -13, -29, -45,
36, 20, 4, -12, -28,
};
public void Unpack ()
{
int pixels_remaining = m_data.Length;
int data_pos = 0;
int eax = 0;
while (pixels_remaining > 0)
{
int count = eax*3 + 3;
if (count > pixels_remaining)
throw new InvalidFormatException();
pixels_remaining -= count;
if (count != m_input.Read (m_data, data_pos, count))
throw new InvalidFormatException();
data_pos += count;
while (pixels_remaining > 0)
{
eax = m_input.ReadByte();
if (0 == (eax & 0x80))
{
if (0x7f == eax)
eax += m_input.ReadUInt16();
break;
}
int shift_index = eax >> 2;
eax &= 3;
if (3 == eax)
eax += m_input.ReadUInt16();
count = eax*3 + 3;
if (pixels_remaining < count)
throw new InvalidFormatException();
pixels_remaining -= count;
int shift = ShiftTable[shift_index & 0x1f];
int shift_row = shift & 0x0f;
shift >>= 4;
shift_row *= (int)m_width;
shift -= shift_row;
shift *= 3;
if (shift >= 0 || data_pos+shift < 0)
throw new InvalidFormatException();
CopyOverlapped (m_data, data_pos+shift, data_pos, count);
data_pos += count;
}
}
}
static internal void CopyOverlapped (byte[] data, int src, int dst, int count)
{
int preceding = dst-src;
while (count > 0)
{
if (preceding > count)
preceding = count;
Array.Copy (data, src, data, dst, preceding);
src = dst;
dst += preceding;
count -= preceding;
}
}
#region IDisposable Members
bool disposed = false;
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing)
{
if (!disposed)
{
if (disposing)
m_input.Dispose();
m_input = null;
m_data = null;
disposed = true;
}
}
#endregion
}
}
[Export(typeof(ImageFormat))]
public class Rc8Format : ImageFormat
{
public override string Tag { get { return "RC8"; } }
public override string Description { get { return "Majiro game engine indexed image format"; } }
public override uint Signature { get { return 0x9a925a98; } }
public override ImageMetaData ReadMetaData (Stream stream)
{
stream.Position = 4;
int id = stream.ReadByte();
if (0x38 != id)
return null;
id = stream.ReadByte();
if (0x5f != id)
return null;
int version = stream.ReadByte();
if (0x30 != version)
return null;
version = stream.ReadByte() - 0x30;
if (version != 0)
return null;
using (var reader = new BinaryReader (stream, Encoding.ASCII, true))
{
uint width = reader.ReadUInt32();
uint height = reader.ReadUInt32();
if (width > 0x8000 || height > 0x8000)
return null;
return new ImageMetaData
{
Width = width,
Height = height,
OffsetX = 0,
OffsetY = 0,
BPP = 8,
};
}
}
public override ImageData Read (Stream file, ImageMetaData info)
{
file.Position = 0x14;
using (var reader = new Reader (file, info))
{
reader.Unpack();
byte[] pixels = reader.Data;
var palette = new BitmapPalette (reader.Palette);
var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height, 96, 96,
PixelFormats.Indexed8, palette, pixels, (int)info.Width);
bitmap.Freeze();
return new ImageData (bitmap, info);
}
}
public override void Write (Stream file, ImageData image)
{
throw new NotImplementedException ("Rc8Format.Write is not implemented.");
}
internal class Reader : IDisposable
{
private BinaryReader m_input;
private uint m_width;
private Color[] m_palette;
private byte[] m_data;
public Color[] Palette { get { return m_palette; } }
public byte[] Data { get { return m_data; } }
public Reader (Stream file, ImageMetaData info)
{
m_width = info.Width;
var palette_data = new byte[0x300];
if (palette_data.Length != file.Read (palette_data, 0, palette_data.Length))
throw new InvalidFormatException();
m_palette = new Color[0x100];
for (int i = 0; i < 0x100; ++i)
{
m_palette[i] = Color.FromRgb (palette_data[i*3], palette_data[i*3+1], palette_data[i*3+2]);
}
m_data = new byte[m_width * info.Height];
m_input = new BinaryReader (file, Encoding.ASCII, true);
}
private static readonly sbyte[] ShiftTable = new sbyte[] {
-16, -32, -48, -64,
49, 33, 17, 1, -15, -31, -47,
34, 18, 2, -14, -30,
};
public void Unpack ()
{
int data_pos = 0;
int eax = 0;
int pixels_remaining = m_data.Length;
while (pixels_remaining > 0)
{
int count = eax + 1;
if (count > pixels_remaining)
throw new InvalidFormatException();
pixels_remaining -= count;
if (count != m_input.Read (m_data, data_pos, count))
throw new InvalidFormatException();
data_pos += count;
while (pixels_remaining > 0)
{
eax = m_input.ReadByte();
if (0 == (eax & 0x80))
{
if (0x7f == eax)
eax += m_input.ReadUInt16();
break;
}
int shift_index = eax >> 3;
eax &= 7;
if (7 == eax)
eax += m_input.ReadUInt16();
count = eax + 3;
if (pixels_remaining < count)
throw new InvalidFormatException();
pixels_remaining -= count;
int shift = ShiftTable[shift_index & 0x0f];
int shift_row = shift & 0x0f;
shift >>= 4;
shift_row *= (int)m_width;
shift -= shift_row;
if (shift >= 0 || data_pos+shift < 0)
throw new InvalidFormatException();
RctFormat.Reader.CopyOverlapped (m_data, data_pos+shift, data_pos, count);
data_pos += count;
}
}
}
#region IDisposable Members
bool disposed = false;
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing)
{
if (!disposed)
{
if (disposing)
m_input.Dispose();
m_input = null;
m_data = null;
disposed = true;
}
}
#endregion
}
}
}