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76 lines
2.9 KiB
C#
76 lines
2.9 KiB
C#
//! \file ImageMB.cs
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//! \date Sun Sep 18 19:05:50 2016
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//! \brief Ancient obfuscated BMP image.
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//
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// Copyright (C) 2016 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System.ComponentModel.Composition;
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using System.IO;
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namespace GameRes.Formats
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{
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[Export(typeof(ImageFormat))]
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public class MbImageFormat : ImageFormat
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{
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public override string Tag { get { return "BMP/MB"; } }
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public override string Description { get { return "Obfuscated bitmap"; } }
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public override uint Signature { get { return 0; } }
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public override bool CanWrite { get { return true; } }
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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int c1 = stream.ReadByte();
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int c2 = stream.ReadByte();
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if ('M' != c1 || ('B' != c2 && 'C' != c2))
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return null;
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using (var bmp = OpenAsBitmap (stream))
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return Bmp.ReadMetaData (bmp);
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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using (var bmp = OpenAsBitmap (stream))
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return Bmp.Read (bmp, info);
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}
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protected IBinaryStream OpenAsBitmap (IBinaryStream input)
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{
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var header = new byte[2] { (byte)'B', (byte)'M' };
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Stream stream = new StreamRegion (input.AsStream, 2, true);
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stream = new PrefixStream (header, stream);
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return new BinaryStream (stream, input.Name);
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}
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public override void Write (Stream file, ImageData image)
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{
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using (var bmp = new MemoryStream())
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{
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Bmp.Write (bmp, image);
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file.WriteByte ((byte)'M');
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file.WriteByte ((byte)'B');
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bmp.Position = 2;
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bmp.CopyTo (file);
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}
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}
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}
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}
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