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477 lines
17 KiB
C#
477 lines
17 KiB
C#
//! \file ImageSeraph.cs
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//! \date Sat Jul 18 12:16:42 2015
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//! \brief Seraphim engine images.
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//
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// Copyright (C) 2015 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;
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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.Seraphim
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{
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internal class SeraphMetaData : ImageMetaData
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{
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public int PackedSize;
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public int Colors;
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}
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[Export(typeof(ImageFormat))]
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public class SeraphCfImage : ImageFormat
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{
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public override string Tag { get { return "CF"; } }
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public override string Description { get { return "Seraphim engine image format"; } }
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public override uint Signature { get { return 0x4643; } }
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public SeraphCfImage ()
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{
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Extensions = new string[] { "cts" };
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}
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x10);
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int packed_size = header.ToInt32 (12);
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if (packed_size <= 0 || packed_size > stream.Length-0x10)
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return null;
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uint width = header.ToUInt16 (8);
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uint height = header.ToUInt16 (10);
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if (0 == width || 0 == height)
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return null;
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return new SeraphMetaData
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{
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OffsetX = header.ToInt16 (4),
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OffsetY = header.ToInt16 (6),
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Width = width,
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Height = height,
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BPP = 24,
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PackedSize = packed_size,
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};
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (SeraphMetaData)info;
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var reader = new SeraphReader (stream.AsStream, meta);
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reader.UnpackCf();
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return ImageData.Create (info, reader.Format, null, 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 NotImplementedException ("SeraphCfImage.Write not implemented");
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}
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}
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[Export(typeof(ImageFormat))]
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public class SeraphCtImage : SeraphCfImage
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{
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public override string Tag { get { return "CT"; } }
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public override uint Signature { get { return 0x5443; } }
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var info = base.ReadMetaData (stream);
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if (info != null)
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info.BPP = 32;
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return info;
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (SeraphMetaData)info;
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var reader = new SeraphReader (stream.AsStream, meta);
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reader.UnpackCt();
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return ImageData.Create (info, reader.Format, null, 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 NotImplementedException ("SeraphCtImage.Write not implemented");
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}
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}
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[Export(typeof(ImageFormat))]
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public class SeraphCbImage : ImageFormat
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{
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public override string Tag { get { return "CB"; } }
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public override string Description { get { return "Seraphim engine image format"; } }
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public override uint Signature { get { return 0; } }
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x10);
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if ('C' != header[0] || 'B' != header[1])
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return null;
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int colors = header.ToUInt16 (2);
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int packed_size = header.ToInt32 (12);
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if (packed_size <= 0 || packed_size > stream.Length-0x10)
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return null;
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uint width = header.ToUInt16 (8);
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uint height = header.ToUInt16 (10);
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if (0 == width || 0 == height)
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return null;
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return new SeraphMetaData
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{
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OffsetX = header.ToInt16 (4),
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OffsetY = header.ToInt16 (6),
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Width = width,
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Height = height,
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BPP = 8,
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PackedSize = packed_size,
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Colors = colors,
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};
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var meta = (SeraphMetaData)info;
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var reader = new SeraphReader (stream.AsStream, meta, 1);
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reader.UnpackCb();
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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 NotImplementedException ("SeraphCbImage.Write not implemented");
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}
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}
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[Export(typeof(ImageFormat))]
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public class SeraphCxImage : SeraphCfImage
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{
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public override string Tag { get { return "CX"; } }
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public override uint Signature { get { return 0x5843; } } // 'CX'
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var info = base.ReadMetaData (stream);
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if (info != null)
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info.BPP = 32;
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return info;
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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var reader = new SeraphReader (stream.AsStream, (SeraphMetaData)info, 4);
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reader.UnpackCx();
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return ImageData.Create (info, reader.Format, null, 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 NotImplementedException ("SeraphCxImage.Write not implemented");
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}
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}
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internal class SeraphReader
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{
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Stream m_input;
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byte[] m_output;
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int m_width;
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int m_height;
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int m_stride;
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int m_colors;
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int m_packed_size;
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int m_pixel_size;
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public byte[] Data { get { return 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 ImageMetaData Info { get; private set; }
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public SeraphReader (Stream input, SeraphMetaData info, int pixel_size = 3)
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{
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Info = info;
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m_input = input;
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m_input.Position = 0x10;
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_stride = m_width * pixel_size;
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m_output = new byte[m_stride * m_height];
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m_packed_size = info.PackedSize;
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m_colors = info.Colors;
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m_pixel_size = pixel_size;
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if (1 == pixel_size && m_colors > 0)
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Palette = ReadPalette (m_colors);
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}
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public BitmapPalette ReadPalette (int colors)
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{
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return ImageFormat.ReadPalette (m_input, Math.Min (colors, 0x100), PaletteFormat.Rgb);
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}
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public void UnpackCb ()
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{
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var pixels = UnpackBytes();
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int dst = 0;
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for (int src = (m_height-1) * m_width; src >= 0; src -= m_width)
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{
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Buffer.BlockCopy (pixels, src, m_output, dst, m_width);
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dst += m_width;
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}
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Format = PixelFormats.Indexed8;
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}
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public void UnpackCt ()
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{
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UnpackRgb();
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m_input.Position = 0x10 + m_packed_size + 4;
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var alpha = UnpackBytes();
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var pixels = new byte[m_width*m_height*4];
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int dst = 0;
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for (int y = m_height-1; y >= 0; --y)
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{
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int rgb = y * m_stride;
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int a = y * m_width;
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for (int x = 0; x < m_width; ++x)
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{
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pixels[dst++] = m_output[rgb++];
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pixels[dst++] = m_output[rgb++];
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pixels[dst++] = m_output[rgb++];
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int v = Math.Min (alpha[a++] * 0xff / 0x64, 0xff);
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pixels[dst++] = (byte)~v;
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}
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}
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m_output = pixels;
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Format = PixelFormats.Bgra32;
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}
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public void UnpackCf ()
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{
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UnpackRgb();
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FlipPixels();
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Format = PixelFormats.Bgr24;
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}
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public void UnpackCx ()
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{
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UnpackRgb();
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FlipPixels();
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Format = PixelFormats.Bgra32;
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}
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private void UnpackRgb () // sub_404250
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{
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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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int ctl = m_input.ReadByte();
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if (-1 == ctl)
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break;
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if ((ctl & 0xF0) == 0xF0)
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throw new InvalidFormatException();
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if (0 == (ctl & 0x80))
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{
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if (0 != (ctl & 0x40))
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{
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count = (ctl & 0x3F) + 2;
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FillBytes (dst, (byte)m_input.ReadByte(), count);
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}
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else
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{
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count = (ctl & 0x3F) + 1;
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if (count != m_input.Read (m_output, dst, count))
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break;
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}
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}
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else if (0 == (ctl & 0x40))
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{
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count = m_input.ReadByte() | ((ctl & 0xF) << 8);
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switch ((ctl >> 4) & 3)
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{
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case 0:
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count += 2;
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FillBytes (dst, (byte)m_input.ReadByte(), count);
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break;
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case 1:
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++count;
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Binary.CopyOverlapped (m_output, dst-m_stride, dst, count);
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break;
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case 2:
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++count;
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Binary.CopyOverlapped (m_output, dst-2*m_stride, dst, count);
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break;
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case 3:
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++count;
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Binary.CopyOverlapped (m_output, dst-4*m_stride, dst, count);
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break;
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}
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}
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else if (0 == (ctl & 0x30))
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{
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count = m_input.ReadByte() + ((ctl & 7) << 8) + 1;
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int x = m_pixel_size;
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if (0 != (ctl & 8))
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x *= 2;
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m_input.Read (m_output, dst, x);
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Binary.CopyOverlapped (m_output, dst, dst+x, count*x);
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++count;
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count *= x;
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}
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else if (0 == (ctl & 0x20))
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{
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int offset = m_input.ReadByte() + ((ctl & 0xF) << 8) + 1;
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count = m_input.ReadByte() + 1;
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int src = dst - m_pixel_size * offset;
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count *= m_pixel_size;
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Binary.CopyOverlapped (m_output, src, dst, count);
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}
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else
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{
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int offset = m_input.ReadByte() + ((ctl & 0xF) << 8) + 1;
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count = m_input.ReadByte() + 1;
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int src = dst - offset;
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Binary.CopyOverlapped (m_output, src, dst, count);
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}
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if (0 == count)
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throw new InvalidFormatException();
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dst += count;
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}
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}
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private byte[] UnpackBytes () // sub_403ED0
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{
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int total = m_width * m_height;
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var output = new byte[total];
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int dst = 0;
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while ( dst < total )
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{
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int count;
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int next = m_input.ReadByte();
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if (-1 == next)
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break;
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if ((next & 0xF0) == 0xF0)
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throw new InvalidFormatException();
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if (0 == (next & 0x80))
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{
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if (0 != (next & 0x40))
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{
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count = (next & 0x3F) + 2;
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byte v = (byte)m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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output[dst+i] = v;
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}
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else
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{
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count = (next & 0x3F) + 1;
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if (count != m_input.Read (output, dst, count))
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break;
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}
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}
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else if (0 == (next & 0x40))
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{
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count = m_input.ReadByte() | ((next & 0xF) << 8);
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switch ((next >> 4) & 3)
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{
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case 0:
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{
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count += 2;
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byte v = (byte)m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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output[dst+i] = v;
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break;
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}
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case 1:
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++count;
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Binary.CopyOverlapped (output, dst-m_width, dst, count);
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break;
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case 2:
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++count;
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Binary.CopyOverlapped (output, dst-2*m_width, dst, count);
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break;
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case 3:
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++count;
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Binary.CopyOverlapped (output, dst-4*m_width, dst, count);
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break;
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}
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}
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else if (0 == (next & 0x20))
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{
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count = m_input.ReadByte() + ((next & 7) << 8) + 1;
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switch ((next >> 3) & 3)
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{
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case 0:
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m_input.Read (output, dst, 2);
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Binary.CopyOverlapped (output, dst, dst+2, count*2);
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++count;
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count *= 2;
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break;
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case 1:
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m_input.Read (output, dst, 4);
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Binary.CopyOverlapped (output, dst, dst+4, count*4);
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++count;
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count *= 4;
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break;
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case 2:
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m_input.Read (output, dst, 8);
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Binary.CopyOverlapped (output, dst, dst+8, count*8);
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++count;
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count *= 8;
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break;
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case 3:
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m_input.Read (output, dst, 16);
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Binary.CopyOverlapped (output, dst, dst+16, count*16);
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++count;
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count *= 16;
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break;
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}
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}
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else
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{
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int v36 = m_input.ReadByte() | ((next & 0xF) << 8);
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count = m_input.ReadByte() + 1;
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int src = dst - 1 - v36;
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Binary.CopyOverlapped (output, src, dst, count);
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}
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dst += count;
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}
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return output;
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}
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private void FlipPixels ()
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{
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// flip pixels vertically
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var pixels = new byte[m_output.Length];
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int dst = 0;
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for (int src = m_stride * (m_height-1); src >= 0; src -= m_stride)
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{
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Buffer.BlockCopy (m_output, src, pixels, dst, m_stride);
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dst += m_stride;
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}
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m_output = pixels;
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}
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void FillBytes (int dst, byte value, int count)
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{
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for (int i = 0; i < count; ++i)
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m_output[dst+i] = value;
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}
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}
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}
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