mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-29 06:14:13 +08:00
268 lines
9.5 KiB
C#
268 lines
9.5 KiB
C#
//! \file ImageGD.cs
|
|
//! \date Fri Jan 20 07:07:47 2017
|
|
//! \brief C4 engine image format.
|
|
//
|
|
// Copyright (C) 2017 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;
|
|
|
|
namespace GameRes.Formats.C4
|
|
{
|
|
internal class GdMetaData : ImageMetaData
|
|
{
|
|
public uint DataOffset;
|
|
public int Compression;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class GdFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GD/C4"; } }
|
|
public override string Description { get { return "C4 engine image format"; } }
|
|
public override uint Signature { get { return 0x1A324447; } } // 'GD2\x1A'
|
|
|
|
public GdFormat ()
|
|
{
|
|
Signatures = new uint[] { 0x1A324447, 0x1A334447 };
|
|
}
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
|
{
|
|
var header = file.ReadHeader (4);
|
|
if (!header.AsciiEqual (0, "GD"))
|
|
return null;
|
|
int version = header[2] - '0';
|
|
GdMetaData info;
|
|
if (2 == version)
|
|
info = new GdMetaData { Width = 640, Height = 480, BPP = 24 };
|
|
else if (3 == version)
|
|
info = new GdMetaData { Width = 800, Height = 600, BPP = 24 };
|
|
else
|
|
return null;
|
|
file.Position = 4 + 3 * (info.Width / 10) * (info.Height / 10 - 1);
|
|
int compression = file.ReadByte();
|
|
if (compression != 'b' && compression != 'l' && compression != 'p')
|
|
return null;
|
|
info.Compression = compression;
|
|
info.DataOffset = (uint)file.Position + 1;
|
|
return info;
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
|
{
|
|
var reader = new GdReader (file, (GdMetaData)info);
|
|
var pixels = reader.Unpack();
|
|
return ImageData.CreateFlipped (info, PixelFormats.Bgr24, null, pixels, reader.Stride);
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("GdFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class XexGdFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GD/XEX"; } }
|
|
public override string Description { get { return "Complets XEX engine image format"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
|
{
|
|
if (!file.Name.HasExtension (".GD"))
|
|
return null;
|
|
var header = file.ReadHeader (2);
|
|
int compression = header[0];
|
|
if (compression != 'l' && compression != 'p' || header[1] != 0x1A)
|
|
return null;
|
|
return new GdMetaData {
|
|
Width = 640, Height = 480, BPP = 24,
|
|
Compression = compression,
|
|
DataOffset = 2,
|
|
};
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
|
{
|
|
var reader = new GdReader (file, (GdMetaData)info);
|
|
var pixels = reader.Unpack();
|
|
return ImageData.CreateFlipped (info, PixelFormats.Bgr24, null, pixels, reader.Stride);
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("XexGdFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal sealed class GdReader
|
|
{
|
|
IBinaryStream m_input;
|
|
GdMetaData m_info;
|
|
byte[] m_output;
|
|
|
|
public int Stride { get { return (int)m_info.Width * 3; } }
|
|
|
|
public GdReader (IBinaryStream input, GdMetaData info)
|
|
{
|
|
m_input = input;
|
|
m_info = info;
|
|
m_output = new byte[m_info.Width * m_info.Height * 3];
|
|
}
|
|
|
|
public byte[] Unpack ()
|
|
{
|
|
m_input.Position = m_info.DataOffset;
|
|
if ('b' == m_info.Compression)
|
|
{
|
|
m_input.Read (m_output, 0, m_output.Length);
|
|
}
|
|
else
|
|
{
|
|
using (var bits = new MsbBitStream (m_input.AsStream, true))
|
|
{
|
|
if ('l' == m_info.Compression)
|
|
UnpackL (bits);
|
|
else if ('p' == m_info.Compression)
|
|
UnpackP (bits);
|
|
else
|
|
throw new InvalidFormatException();
|
|
}
|
|
}
|
|
return m_output;
|
|
}
|
|
|
|
void UnpackL (IBitStream input)
|
|
{
|
|
int dst = 0;
|
|
var frame = new byte[0x10000];
|
|
int frame_pos = 1;
|
|
while (dst < m_output.Length)
|
|
{
|
|
int bit = input.GetNextBit();
|
|
if (-1 == bit)
|
|
break;
|
|
if (0 != bit)
|
|
{
|
|
byte v = (byte)input.GetBits (8);
|
|
m_output[dst++] = v;
|
|
frame[frame_pos++ & 0xFFFF] = v;
|
|
}
|
|
else
|
|
{
|
|
int offset = input.GetBits (16);
|
|
int count = input.GetBits (4);
|
|
if (-1 == offset || -1 == count)
|
|
break;
|
|
count += 3;
|
|
while (count --> 0)
|
|
{
|
|
byte v = frame[offset++ & 0xFFFF];
|
|
m_output[dst++] = v;
|
|
frame[frame_pos++ & 0xFFFF] = v;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void UnpackP (IBitStream input)
|
|
{
|
|
int dst = 0;
|
|
for (int i = 0; i < m_output.Length; ++i)
|
|
m_output[i] = 0xFF;
|
|
int width = (int)m_info.Width;
|
|
while (dst < m_output.Length)
|
|
{
|
|
int count = input.GetBits (2);
|
|
if (-1 == count)
|
|
break;
|
|
if (2 == count)
|
|
{
|
|
count = input.GetBits (2) + 2;
|
|
}
|
|
else if (3 == count)
|
|
{
|
|
int n = 3;
|
|
while (input.GetNextBit() > 0)
|
|
++n;
|
|
if (n >= 24)
|
|
break;
|
|
count = (1 << n | input.GetBits (n)) - 2;
|
|
}
|
|
dst += 3 * count;
|
|
m_output [dst ] = (byte)input.GetBits (8);
|
|
m_output [dst+1] = (byte)input.GetBits (8);
|
|
m_output [dst+2] = (byte)input.GetBits (8);
|
|
if (input.GetNextBit() > 0)
|
|
{
|
|
int copy_dst = dst;
|
|
for (;;)
|
|
{
|
|
int ctl = input.GetBits (2);
|
|
if (0 == ctl)
|
|
{
|
|
if (input.GetNextBit() <= 0)
|
|
break;
|
|
if (input.GetNextBit() > 0)
|
|
copy_dst += (width + 2) * 3;
|
|
else
|
|
copy_dst += (width - 2) * 3;
|
|
}
|
|
else if (1 == ctl)
|
|
copy_dst += (width - 1) * 3;
|
|
else if (2 == ctl)
|
|
copy_dst += width * 3;
|
|
else if (3 == ctl)
|
|
copy_dst += (width + 1) * 3;
|
|
else if (-1 == ctl)
|
|
break;
|
|
m_output[copy_dst] = m_output[dst];
|
|
m_output[copy_dst+1] = m_output[dst+1];
|
|
m_output[copy_dst+2] = m_output[dst+2];
|
|
}
|
|
}
|
|
dst += 3;
|
|
}
|
|
byte b = 0, g = 0, r = 0;
|
|
for (dst = 0; dst < m_output.Length; dst += 3)
|
|
{
|
|
if (0xFF == m_output[dst] && 0xFF == m_output[dst+1] && 0xFF == m_output[dst+2])
|
|
{
|
|
m_output[dst ] = b;
|
|
m_output[dst+1] = g;
|
|
m_output[dst+2] = r;
|
|
}
|
|
else
|
|
{
|
|
b = m_output[dst ];
|
|
g = m_output[dst+1];
|
|
r = m_output[dst+2];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|