GARbro-mirror/ArcFormats/Valkyria/ImageMAL.cs

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2017-02-25 09:42:15 +08:00
//! \file ImageMAL.cs
//! \date Sat Feb 25 05:13:05 2017
//! \brief Valkyria mask 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.Valkyria
{
[Export(typeof(ImageFormat))]
public class MalFormat : ImageFormat
{
public override string Tag { get { return "MAL"; } }
public override string Description { get { return "Valkyria mask image format"; } }
public override uint Signature { get { return 0x4F43494D; } } // 'MICO'
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0xE);
if (!header.AsciiEqual (4, "MSK00"))
return null;
return new ImageMetaData
{
Width = header.ToUInt16 (0xA),
Height = header.ToUInt16 (0xC),
BPP = 8
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
file.Position = 0xE;
int total = (int)info.Width * (int)info.Height;
var pixels = new byte[total + 15];
int dst = 0;
while (dst < total)
{
int count = file.ReadUInt16();
if (count > 0x7FFF)
{
count &= 0x7FFF;
file.Read (pixels, dst, count);
dst += count;
}
else
{
byte c = file.ReadUInt8();
while (count --> 0)
pixels[dst++] = c;
}
}
return ImageData.Create (info, PixelFormats.Gray8, null, pixels);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("MalFormat.Write not implemented");
}
}
}