GARbro-mirror/ArcFormats/Foster/ImageC24.cs

163 lines
5.6 KiB
C#

//! \file ImageC24.cs
//! \date Sun Feb 19 13:13:16 2017
//! \brief Foster game 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.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
namespace GameRes.Formats.Foster
{
internal class C24MetaData : ImageMetaData
{
public uint DataOffset;
}
/// <summary>
/// ShiinaRio S25 predecessor.
/// </summary>
[Export(typeof(ImageFormat))]
public class C24Format : ImageFormat
{
public override string Tag { get { return "C24"; } }
public override string Description { get { return "Foster game engine image format"; } }
public override uint Signature { get { return 0x00343243; } } // 'C24'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (12);
int count = header.ToInt32 (4);
if (count <= 0)
return null;
file.Position = header.ToUInt32 (8);
var info = new C24MetaData { BPP = 24 };
info.Width = file.ReadUInt32();
info.Height = file.ReadUInt32();
info.OffsetX = file.ReadInt32();
info.OffsetY = file.ReadInt32();
info.DataOffset = (uint)file.Position;
return info;
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
using (var reader = new C24Decoder (file, (C24MetaData)info, true))
return reader.Image;
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("C24Format.Write not implemented");
}
}
internal sealed class C24Decoder : IImageDecoder
{
IBinaryStream m_input;
C24MetaData m_info;
byte[] m_output;
bool m_should_dispose;
ImageData m_image;
public Stream Source { get { m_input.Position = 0; return m_input.AsStream; } }
public ImageFormat SourceFormat { get { return null; } }
public ImageMetaData Info { get { return m_info; } }
public ImageData Image
{
get
{
if (null == m_image)
{
var pixels = Unpack();
m_image = ImageData.Create (m_info, PixelFormats.Bgr24, null, pixels);
}
return m_image;
}
}
public C24Decoder (IBinaryStream file, C24MetaData info, bool leave_open = false)
{
m_input = file;
m_info = info;
m_output = new byte[3 * m_info.Width * m_info.Height];
m_should_dispose = !leave_open;
}
public byte[] Unpack ()
{
m_input.Position = m_info.DataOffset;
var rows = new uint[m_info.Height];
for (int i = 0; i < rows.Length; ++i)
rows[i] = m_input.ReadUInt32();
int dst = 0;
int width = (int)m_info.Width;
foreach (uint row_offset in rows)
{
m_input.Position = row_offset;
bool rle = false;
for (int x = 0; x < width; )
{
int count = m_input.ReadUInt8();
if (!rle)
{
if (0xFF == count)
count = m_input.ReadUInt16();
int byte_count = count * 3;
for (int i = 0; i < byte_count; ++i)
m_output[dst++] = 0xFF;
}
else
{
if (0 == count)
count = m_input.ReadUInt16();
int byte_count = count * 3;
m_input.Read (m_output, dst, byte_count);
dst += byte_count;
}
x += count;
rle = !rle;
}
}
return m_output;
}
#region IDisposable Members
bool m_disposed = false;
public void Dispose ()
{
if (!m_disposed)
{
if (m_should_dispose)
{
m_input.Dispose();
}
m_disposed = true;
}
System.GC.SuppressFinalize (this);
}
#endregion
}
}