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133 lines
4.7 KiB
C#
133 lines
4.7 KiB
C#
//! \file ImageVRS.cs
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//! \date 2018 Jan 16
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//! \brief D.O. image format.
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//
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// Copyright (C) 2018 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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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Utility;
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namespace GameRes.Formats.Ikura
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{
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[Export(typeof(ImageFormat))]
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public class DoFormat : ImageFormat
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{
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public override string Tag { get { return "VRS/DO"; } }
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public override string Description { get { return "D.O. image format"; } }
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public override uint Signature { get { return 0x4F44; } } // 'DO'
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (8);
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return new ImageMetaData {
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Width = header.ToUInt16 (4),
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Height = header.ToUInt16 (6),
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BPP = 8,
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};
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new DoReader (file, info);
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reader.Unpack();
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return ImageData.Create (info, reader.Format, reader.Palette, reader.Data);
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("DoFormat.Write not implemented");
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}
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}
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internal class DoReader
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{
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IBinaryStream m_input;
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byte[] m_output;
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public PixelFormat Format { get; private set; }
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public BitmapPalette Palette { get; private set; }
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public byte[] Data { get { return m_output; } }
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public DoReader (IBinaryStream input, ImageMetaData info)
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{
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m_input = input;
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m_output = new byte[info.Width * info.Height];
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Format = PixelFormats.Indexed8;
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}
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public void Unpack ()
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{
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m_input.Position = 12;
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Palette = ReadPalette();
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int dst = 0;
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while (dst < m_output.Length)
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{
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int count;
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byte ctl = m_input.ReadUInt8();
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if (0 == (ctl & 0xC0))
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{
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count = ctl & 0x3F;
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if (0 == count)
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count = m_input.ReadUInt8() + 0x40;
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m_input.Read (m_output, dst, count);
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}
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else if (0 == (ctl & 0x80))
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{
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count = ctl & 0x3F;
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if (0 == count)
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count = m_input.ReadUInt8() + 0x40;
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++count;
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Binary.CopyOverlapped (m_output, dst-1, dst, count);
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}
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else
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{
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int offset = (m_input.ReadUInt8() | (ctl & 0xF) << 8) + 1;
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count = (ctl >> 4) & 7;
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if (0 == count)
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count = m_input.ReadUInt8() + 8;
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count += 2;
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Binary.CopyOverlapped (m_output, dst-offset, dst, count);
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}
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dst += count;
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}
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}
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BitmapPalette ReadPalette ()
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{
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var palette_data = m_input.ReadBytes (0x300);
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if (palette_data.Length != 0x300)
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throw new EndOfStreamException();
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int src = 0;
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var color_map = new Color[0x100];
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for (int i = 0; i < 0x100; ++i)
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{
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color_map[i] = Color.FromRgb (palette_data[src+1], palette_data[src+2], palette_data[src]);
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src += 3;
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}
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return new BitmapPalette (color_map);
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}
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}
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}
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