mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-19 09:24:12 +08:00
341 lines
14 KiB
C#
341 lines
14 KiB
C#
//! \file ImageCRX.cs
|
|
//! \date Mon Jun 15 15:14:59 2015
|
|
//! \brief Circus image format.
|
|
//
|
|
// Copyright (C) 2015-2016 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.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Windows.Media;
|
|
using System.Windows.Media.Imaging;
|
|
using GameRes.Compression;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Circus
|
|
{
|
|
internal class CrxMetaData : ImageMetaData
|
|
{
|
|
public int Compression;
|
|
public int CompressionFlags;
|
|
public int Colors;
|
|
public int Mode;
|
|
}
|
|
|
|
[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 (IBinaryStream stream)
|
|
{
|
|
var header = stream.ReadHeader (0x14);
|
|
int compression = header.ToUInt16 (0xC);
|
|
if (compression < 1 || compression > 3)
|
|
return null;
|
|
int depth = header.ToInt16 (0x10);
|
|
var info = new CrxMetaData
|
|
{
|
|
Width = header.ToUInt16 (8),
|
|
Height = header.ToUInt16 (10),
|
|
OffsetX = header.ToInt16 (4),
|
|
OffsetY = header.ToInt16 (6),
|
|
BPP = 0 == depth ? 24 : 1 == depth ? 32 : 8,
|
|
Compression = compression,
|
|
CompressionFlags = header.ToUInt16 (0xE),
|
|
Colors = depth,
|
|
Mode = header.ToUInt16 (0x12),
|
|
};
|
|
return info;
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
|
|
{
|
|
using (var reader = new Reader (stream, (CrxMetaData)info))
|
|
{
|
|
reader.Unpack();
|
|
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
|
|
}
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("CrxFormat.Write not implemented");
|
|
}
|
|
|
|
internal sealed class Reader : IDisposable
|
|
{
|
|
IBinaryStream m_input;
|
|
byte[] m_output;
|
|
int m_width;
|
|
int m_height;
|
|
int m_stride;
|
|
int m_bpp;
|
|
int m_compression;
|
|
int m_flags;
|
|
int m_mode;
|
|
|
|
public byte[] Data { get { return m_output; } }
|
|
public PixelFormat Format { get; private set; }
|
|
public BitmapPalette Palette { get; private set; }
|
|
public int Stride { get { return m_stride; } }
|
|
|
|
public Reader (IBinaryStream input, CrxMetaData info)
|
|
{
|
|
m_width = (int)info.Width;
|
|
m_height = (int)info.Height;
|
|
m_bpp = info.BPP;
|
|
m_compression = info.Compression;
|
|
m_flags = info.CompressionFlags;
|
|
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 = input;
|
|
m_input.Position = 0x14;
|
|
if (8 == m_bpp)
|
|
ReadPalette (info.Colors);
|
|
}
|
|
|
|
private void ReadPalette (int colors)
|
|
{
|
|
int color_size = 0x102 == colors ? 4 : 3;
|
|
if (colors > 0x100)
|
|
{
|
|
colors = 0x100;
|
|
}
|
|
int palette_size = colors * color_size;
|
|
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];
|
|
int color_pos = 0;
|
|
for (int i = 0; i < palette.Length; ++i)
|
|
{
|
|
byte r = palette_data[color_pos];
|
|
byte g = palette_data[color_pos+1];
|
|
byte b = palette_data[color_pos+2];
|
|
if (0xff == b && 0 == g && 0xff == r)
|
|
g = 0xff;
|
|
palette[i] = Color.FromRgb (r, g, b);
|
|
color_pos += color_size;
|
|
}
|
|
Palette = new BitmapPalette (palette);
|
|
}
|
|
|
|
public void Unpack (bool is_diff = false)
|
|
{
|
|
if (m_compression >= 3)
|
|
{
|
|
int count = m_input.ReadInt32();
|
|
m_input.Seek (count * 0x10, SeekOrigin.Current);
|
|
}
|
|
if (0 != (m_flags & 0x10))
|
|
{
|
|
m_input.ReadInt32(); // compressed_size
|
|
}
|
|
if (1 == m_compression)
|
|
UnpackV1();
|
|
else
|
|
UnpackV2();
|
|
|
|
if (32 == m_bpp && m_mode != 1)
|
|
{
|
|
int alpha_flip = 2 == m_mode ? 0 : 0xFF;
|
|
int line = 0;
|
|
for (int h = 0; h < m_height; h++)
|
|
{
|
|
for (int w = 0; w < m_width; w++)
|
|
{
|
|
int pixel = line + w * 4;
|
|
var alpha = m_output[pixel];
|
|
var b = m_output[pixel+1];
|
|
var g = m_output[pixel+2];
|
|
var r = m_output[pixel+3];
|
|
m_output[pixel] = b;
|
|
m_output[pixel+1] = g;
|
|
m_output[pixel+2] = r;
|
|
m_output[pixel+3] = (byte)(alpha ^ alpha_flip);
|
|
}
|
|
line += m_stride;
|
|
}
|
|
}
|
|
}
|
|
|
|
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.ReadUInt8() | 0xff00;
|
|
|
|
if (0 != (flag & 1))
|
|
{
|
|
byte dat = m_input.ReadUInt8();
|
|
window[win_pos++] = dat;
|
|
win_pos &= 0xffff;
|
|
m_output[dst++] = dat;
|
|
}
|
|
else
|
|
{
|
|
byte control = m_input.ReadUInt8();
|
|
int count, offset;
|
|
|
|
if (control >= 0xc0)
|
|
{
|
|
offset = ((control & 3) << 8) | m_input.ReadUInt8();
|
|
count = 4 + ((control >> 2) & 0xf);
|
|
}
|
|
else if (0 != (control & 0x80))
|
|
{
|
|
offset = control & 0x1f;
|
|
count = 2 + ((control >> 5) & 3);
|
|
if (0 == offset)
|
|
offset = m_input.ReadUInt8();
|
|
}
|
|
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 ()
|
|
{
|
|
int pixel_size = m_bpp / 8;
|
|
int src_stride = m_width * pixel_size;
|
|
using (var zlib = new ZLibStream (m_input.AsStream, CompressionMode.Decompress, true))
|
|
using (var src = new BinaryReader (zlib))
|
|
{
|
|
if (m_bpp >= 24)
|
|
{
|
|
for (int y = 0; y < m_height; ++y)
|
|
{
|
|
byte ctl = src.ReadByte();
|
|
int dst = y * m_stride;
|
|
int prev_row = dst - m_stride;
|
|
switch (ctl)
|
|
{
|
|
case 0:
|
|
src.Read (m_output, dst, pixel_size);
|
|
for (int x = pixel_size; x < src_stride; ++x)
|
|
m_output[dst+x] = (byte)(src.ReadByte() + m_output[dst+x - pixel_size]);
|
|
break;
|
|
case 1:
|
|
for (int x = 0; x < src_stride; ++x)
|
|
m_output[dst+x] = (byte)(src.ReadByte() + m_output[prev_row+x]);
|
|
break;
|
|
case 2:
|
|
src.Read (m_output, dst, pixel_size);
|
|
for (int x = pixel_size; x < src_stride; ++x)
|
|
m_output[dst+x] = (byte)(src.ReadByte() + m_output[prev_row+x - pixel_size]);
|
|
break;
|
|
case 3:
|
|
for (int x = src_stride - pixel_size; x > 0; --x)
|
|
m_output[dst++] = (byte)(src.ReadByte() + m_output[prev_row++ + pixel_size]);
|
|
src.Read (m_output, dst, pixel_size);
|
|
break;
|
|
case 4:
|
|
for (int i = 0; i < pixel_size; ++i)
|
|
{
|
|
int w = m_width;
|
|
byte val = src.ReadByte();
|
|
while (w > 0)
|
|
{
|
|
m_output[dst] = val;
|
|
dst += pixel_size;
|
|
if (0 == --w)
|
|
break;
|
|
byte next = src.ReadByte();
|
|
if (val == next)
|
|
{
|
|
int count = src.ReadByte();
|
|
for (int j = 0; j < count; ++j)
|
|
{
|
|
m_output[dst] = val;
|
|
dst += pixel_size;
|
|
}
|
|
w -= count;
|
|
if (w > 0)
|
|
val = src.ReadByte();
|
|
}
|
|
else
|
|
val = next;
|
|
}
|
|
dst -= src_stride - 1;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int dst = 0;
|
|
for (int y = 0; y < m_height; ++y)
|
|
{
|
|
src.Read (m_output, dst, src_stride);
|
|
dst += m_stride;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#region IDisposable Members
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
}
|