mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-29 14:24:13 +08:00
315 lines
12 KiB
C#
315 lines
12 KiB
C#
//! \file ImageCRX.cs
|
|
//! \date Mon Jun 15 15:14:59 2015
|
|
//! \brief Circus image format.
|
|
//
|
|
// Copyright (C) 2015 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.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Windows;
|
|
using System.Windows.Media;
|
|
using System.Windows.Media.Imaging;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Circus
|
|
{
|
|
internal class CrxMetaData : ImageMetaData
|
|
{
|
|
public int Mode;
|
|
public int Colors;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class CrxFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "CRX"; } }
|
|
public override string Description { get { return "Circus image format"; } }
|
|
public override uint Signature { get { return 0x47585243; } } // 'CRXG'
|
|
|
|
public override ImageMetaData ReadMetaData (Stream stream)
|
|
{
|
|
var header = new byte[0x14];
|
|
if (header.Length != stream.Read (header, 0, header.Length))
|
|
return null;
|
|
int type = LittleEndian.ToInt32 (header, 0x10);
|
|
var info = new CrxMetaData
|
|
{
|
|
Width = LittleEndian.ToUInt16 (header, 8),
|
|
Height = LittleEndian.ToUInt16 (header, 10),
|
|
BPP = 0 == type ? 24 : 1 == type ? 32 : 8,
|
|
Mode = LittleEndian.ToUInt16 (header, 12),
|
|
Colors = type,
|
|
};
|
|
if (info.Mode != 1 && info.Mode != 2)
|
|
return null;
|
|
return info;
|
|
}
|
|
|
|
public override ImageData Read (Stream stream, ImageMetaData info)
|
|
{
|
|
var meta = info as CrxMetaData;
|
|
if (null == meta)
|
|
throw new ArgumentException ("CrxFormat.Read should be supplied with CrxMetaData", "info");
|
|
|
|
stream.Position = 0x14;
|
|
using (var reader = new Reader (stream, meta))
|
|
{
|
|
reader.Unpack();
|
|
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data);
|
|
}
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("CrxFormat.Write not implemented");
|
|
}
|
|
|
|
internal sealed class Reader : IDisposable
|
|
{
|
|
BinaryReader m_input;
|
|
byte[] m_output;
|
|
int m_width;
|
|
int m_height;
|
|
int m_stride;
|
|
int m_bpp;
|
|
int m_mode;
|
|
|
|
public byte[] Data { get { return m_output; } }
|
|
public PixelFormat Format { get; private set; }
|
|
public BitmapPalette Palette { get; private set; }
|
|
|
|
public Reader (Stream input, CrxMetaData info)
|
|
{
|
|
m_width = (int)info.Width;
|
|
m_height = (int)info.Height;
|
|
m_bpp = info.BPP;
|
|
m_mode = info.Mode;
|
|
switch (m_bpp)
|
|
{
|
|
case 24: Format = PixelFormats.Bgr24; break;
|
|
case 32: Format = PixelFormats.Bgra32; break;
|
|
case 8: Format = PixelFormats.Indexed8; break;
|
|
default: throw new InvalidFormatException();
|
|
}
|
|
m_stride = (m_width * m_bpp / 8 + 3) & ~3;
|
|
m_output = new byte[m_height*m_stride];
|
|
m_input = new ArcView.Reader (input);
|
|
if (8 == m_bpp)
|
|
ReadPalette (info.Colors);
|
|
}
|
|
|
|
private void ReadPalette (int colors)
|
|
{
|
|
int palette_size = colors * 3;
|
|
var palette_data = new byte[palette_size];
|
|
if (palette_size != m_input.Read (palette_data, 0, palette_size))
|
|
throw new InvalidFormatException();
|
|
var palette = new Color[colors];
|
|
for (int i = 0; i < palette.Length; ++i)
|
|
{
|
|
byte r = palette_data[i*3];
|
|
byte g = palette_data[i*3+1];
|
|
byte b = palette_data[i*3+2];
|
|
if (0xff == b && 0 == g && 0xff == r)
|
|
g = 0xff;
|
|
palette[i] = Color.FromRgb (r, g, b);
|
|
}
|
|
Palette = new BitmapPalette (palette);
|
|
}
|
|
|
|
public void Unpack ()
|
|
{
|
|
if (1 == m_mode)
|
|
UnpackV1();
|
|
else
|
|
UnpackV2();
|
|
|
|
if (32 == m_bpp)
|
|
{
|
|
int line = 0;
|
|
for (int h = 0; h < m_height; h++)
|
|
{
|
|
int shift = (h & 1) * 3;
|
|
|
|
for (int w = 0; w < m_width; w++)
|
|
{
|
|
int pixel = line + w * 4;
|
|
byte alpha = m_output[pixel];
|
|
int b = m_output[pixel+1];
|
|
int g = m_output[pixel+2];
|
|
int r = m_output[pixel+3];
|
|
|
|
if (alpha != 0xff)
|
|
{
|
|
b += (w & 1) + shift;
|
|
if (b < 0)
|
|
b = 0;
|
|
else if (b > 0xff)
|
|
b = 0xff;
|
|
|
|
g += (w & 1) + shift;
|
|
if (g < 0)
|
|
g = 0;
|
|
else if (g > 0xff)
|
|
g = 0xff;
|
|
|
|
r += (w & 1) + shift;
|
|
if (r < 0)
|
|
r = 0;
|
|
else if (r > 0xff)
|
|
r = 0xff;
|
|
}
|
|
m_output[pixel] = (byte)b;
|
|
m_output[pixel+1] = (byte)g;
|
|
m_output[pixel+2] = (byte)r;
|
|
m_output[pixel+3] = alpha;
|
|
shift = -shift;
|
|
}
|
|
line += m_stride;
|
|
}
|
|
}
|
|
else if (24 == m_bpp)
|
|
{
|
|
int pixel = 0;
|
|
|
|
for (int h = 0; h < m_height; h++)
|
|
{
|
|
int shift = (h & 1) * 3;
|
|
|
|
for (int w = 0; w < m_width; w++)
|
|
{
|
|
int b = m_output[pixel];
|
|
int g = m_output[pixel+1];
|
|
int r = m_output[pixel+2];
|
|
if (b != 0xff || 0 != g || r != b)
|
|
{
|
|
b += (w & 1) + shift;
|
|
if (b < 0)
|
|
b = 0;
|
|
else if (b > 0xff)
|
|
b = 0xff;
|
|
|
|
g += (w & 1) + shift;
|
|
if (g < 0)
|
|
g = 0;
|
|
else if (g > 0xff)
|
|
g = 0xff;
|
|
|
|
r += (w & 1) + shift;
|
|
if (r < 0)
|
|
r = 0;
|
|
else if (r > 0xff)
|
|
r = 0xff;
|
|
|
|
m_output[pixel] = (byte)b;
|
|
m_output[pixel+1] = (byte)g;
|
|
m_output[pixel+2] = (byte)r;
|
|
}
|
|
shift = -shift;
|
|
pixel += 3;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void UnpackV1 ()
|
|
{
|
|
byte[] window = new byte[0x10000];
|
|
int flag = 0;
|
|
int win_pos = 0;
|
|
int dst = 0;
|
|
while (dst < m_output.Length)
|
|
{
|
|
flag >>= 1;
|
|
if (0 == (flag & 0x100))
|
|
flag = m_input.ReadByte() | 0xff00;
|
|
|
|
if (0 != (flag & 1))
|
|
{
|
|
byte dat = m_input.ReadByte();
|
|
window[win_pos++] = dat;
|
|
win_pos &= 0xffff;
|
|
m_output[dst++] = dat;
|
|
}
|
|
else
|
|
{
|
|
byte control = m_input.ReadByte();
|
|
int count, offset;
|
|
|
|
if (control >= 0xc0)
|
|
{
|
|
offset = ((control & 3) << 8) | m_input.ReadByte();
|
|
count = 4 + ((control >> 2) & 0xf);
|
|
}
|
|
else if (0 != (control & 0x80))
|
|
{
|
|
offset = control & 0x1f;
|
|
count = 2 + ((control >> 5) & 3);
|
|
if (0 == offset)
|
|
offset = m_input.ReadByte();
|
|
}
|
|
else if (0x7f == control)
|
|
{
|
|
count = 2 + m_input.ReadUInt16();
|
|
offset = m_input.ReadUInt16();
|
|
}
|
|
else
|
|
{
|
|
offset = m_input.ReadUInt16();
|
|
count = control + 4;
|
|
}
|
|
offset = win_pos - offset;
|
|
for (int k = 0; k < count && dst < m_output.Length; k++)
|
|
{
|
|
offset &= 0xffff;
|
|
byte dat = window[offset++];
|
|
window[win_pos++] = dat;
|
|
win_pos &= 0xffff;
|
|
m_output[dst++] = dat;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void UnpackV2 ()
|
|
{
|
|
throw new NotImplementedException ("CRX v2 not implemented");
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool m_disposed = false;
|
|
|
|
public void Dispose ()
|
|
{
|
|
if (!m_disposed)
|
|
{
|
|
m_input.Dispose();
|
|
m_disposed = true;
|
|
}
|
|
GC.SuppressFinalize (this);
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
}
|