GARbro-mirror/ArcFormats/Ikura/ImageYGP.cs
2016-03-20 14:43:34 +04:00

143 lines
5.3 KiB
C#

//! \file ImageYGP.cs
//! \date Sun Mar 20 13:24:00 2016
//! \brief YGP image format.
//
// Copyright (C) 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.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Ikura
{
internal class YgpMetaData : ImageMetaData
{
public byte Type;
public byte Flags;
public int DataOffset;
public int DataSize;
}
[Export(typeof(ImageFormat))]
public class YgpFormat : ImageFormat
{
public override string Tag { get { return "YGP"; } }
public override string Description { get { return "Ikura GDL image format"; } }
public override uint Signature { get { return 0x504759; } } // 'YGP'
public override ImageMetaData ReadMetaData (Stream stream)
{
stream.Position = 4;
using (var reader = new ArcView.Reader (stream))
{
int mask_pos = reader.ReadUInt16(); // 04
byte type = reader.ReadByte(); // 06
if (type != 1 && type != 2)
return null;
var info = new YgpMetaData { Type = type, BPP = 32 };
info.Flags = reader.ReadByte(); // 07
int header_size = reader.ReadInt32(); // 08
stream.Position = header_size;
info.DataSize = reader.ReadInt32(); // XX+00
info.Width = reader.ReadUInt16(); // XX+04
info.Height = reader.ReadUInt16(); // XX+06
info.DataOffset = header_size+8;
if (0 != (info.Flags & 4))
{
stream.Position = 0x14;
info.OffsetX = reader.ReadInt16();
info.OffsetY = reader.ReadInt16();
}
return info;
}
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
var meta = (YgpMetaData)info;
stream.Position = meta.DataOffset;
int stride = (int)meta.Width * 4;
var pixels = new byte[stride * (int)meta.Height];
if (0 != (meta.Flags & 1))
{
using (var reader = new ArcView.Reader (stream))
Unpack (reader, meta.DataSize, pixels);
}
else
stream.Read (pixels, 0, pixels.Length);
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
}
void Unpack (BinaryReader input, int input_size, byte[] output)
{
int dst = 0;
while (input_size > 0)
{
int count;
int ctl = input.ReadByte();
--input_size;
if (0 == (ctl & 0xC0))
{
count = ((ctl & 0x3F) + 1) * 4;
input.Read (output, dst, count);
input_size -= count;
}
else
{
int offset;
if (0x40 == (ctl & 0xC0))
{
count = (ctl & 0x3F) + 1;
offset = 1;
}
else if (0x80 == (ctl & 0xE0))
{
count = (ctl & 0x1F) + 1;
offset = input.ReadByte();
--input_size;
}
else if (0xA0 == (ctl & 0xE0))
{
count = (ctl & 0x1F) + 1;
offset = input.ReadUInt16();
input_size -= 2;
}
else
{
continue;
}
count *= 4;
offset *= 4;
Binary.CopyOverlapped (output, dst-offset, dst, count);
}
dst += count;
}
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("YgpFormat.Write not implemented");
}
}
}