mirror of
https://github.com/crskycode/GARbro.git
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611 lines
23 KiB
C#
611 lines
23 KiB
C#
//! \file ImageELG.cs
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//! \date Wed Apr 22 03:14:49 2015
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//! \brief Lucifen Easy Game System image format.
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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;
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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.Lucifen
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{
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internal class ElgMetaData : ImageMetaData
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{
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public int Type;
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public int HeaderSize;
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}
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[Export(typeof(ImageFormat))]
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public class ElgFormat : ImageFormat
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{
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public override string Tag { get { return "ELG"; } }
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public override string Description { get { return "Lucifen Easy Game System image format"; } }
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public override uint Signature { get { return 0x01474c45u; } } // 'ELG\001'
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public ElgFormat ()
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{
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Signatures = new uint[] { 0x01474c45u, 0x08474c45u, 0x18474c45u, 0x20474c45u, 0x02474c45u };
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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 ("ElgFormat.Write not implemented");
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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{
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stream.Seek (3, SeekOrigin.Current);
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using (var input = new ArcView.Reader (stream))
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{
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int bpp = input.ReadByte();
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int x = 0;
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int y = 0;
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int type = bpp;
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int header_size = 8;
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if (2 == type)
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{
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bpp = input.ReadByte();
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header_size = 13;
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}
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else if (1 == type)
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{
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bpp = input.ReadByte();
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x = input.ReadInt16();
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y = input.ReadInt16();
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header_size = 13;
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}
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else
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type = 0;
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if (8 != bpp && 24 != bpp && 32 != bpp)
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return null;
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uint w = input.ReadUInt16();
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uint h = input.ReadUInt16();
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if (2 == type)
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{
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x = input.ReadInt16();
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y = input.ReadInt16();
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}
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return new ElgMetaData
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{
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Width = w,
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Height = h,
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OffsetX = x,
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OffsetY = y,
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BPP = bpp,
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Type = type,
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HeaderSize = header_size,
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};
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}
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}
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public override ImageData Read (Stream file, ImageMetaData info)
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{
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var meta = (ElgMetaData)info;
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file.Position = meta.HeaderSize;
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using (var reader = new Reader (file, meta))
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{
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reader.Unpack();
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return ImageData.Create (meta, reader.Format, reader.Palette, reader.Data);
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}
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}
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internal class Reader : IDisposable
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{
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int m_width;
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int m_height;
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int m_bpp;
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int m_type;
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BinaryReader 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 Reader (Stream stream, ElgMetaData info)
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{
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_bpp = info.BPP;
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m_type = info.Type;
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m_output = new byte[m_width*m_height*m_bpp/8];
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m_input = new ArcView.Reader (stream);
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}
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public void Unpack ()
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{
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if (2 == m_type)
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{
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while (0 != m_input.ReadByte())
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{
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int size = m_input.ReadInt32();
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if (size < 4)
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throw new InvalidFormatException();
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m_input.BaseStream.Seek (size-4, SeekOrigin.Current);
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}
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}
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if (8 == m_bpp)
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{
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Format = PixelFormats.Indexed8;
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UnpackPalette();
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UnpackIndexed (m_output);
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}
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else if (24 == m_bpp)
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{
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Format = PixelFormats.Bgr24;
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UnpackRGB();
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}
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else
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{
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Format = PixelFormats.Bgra32;
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UnpackRGBA();
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UnpackAlpha();
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}
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}
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void UnpackPalette ()
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{
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byte[] palette_data = new byte[0x400];
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UnpackIndexed (palette_data);
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var colors = new Color[256];
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for (int i = 0; i < 256; ++i)
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colors[i] = Color.FromRgb (palette_data[i*4+2], palette_data[i*4+1], palette_data[i*4]);
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Palette = new BitmapPalette (colors);
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}
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void UnpackIndexed (byte[] output)
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{
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int dst = 0;
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for (;;)
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{
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byte flags = m_input.ReadByte();
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if (0xff == flags || dst >= m_output.Length)
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break;
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int count, pos;
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if (0 == (flags & 0xc0))
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 33;
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else
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count = (flags & 0x1f) + 1;
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for (int i = 0; i < count; ++i)
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output[dst++] = m_input.ReadByte();
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}
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else if ((flags & 0xc0) == 0x40)
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 35;
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else
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count = (flags & 0x1f) + 3;
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byte v = m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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output[dst++] = v;
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}
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else
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{
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if ((flags & 0xc0) == 0x80)
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{
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if (0 == (flags & 0x30))
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{
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count = (flags & 0xf) + 2;
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pos = m_input.ReadByte() + 2;
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}
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else if ((flags & 0x30) == 0x10)
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 3;
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count = m_input.ReadByte() + 4;
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}
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else if ((flags & 0x30) == 0x20)
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 3;
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count = 3;
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}
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else
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 3;
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count = 4;
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}
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}
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else if (0 != (flags & 0x20))
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{
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pos = (flags & 0x1f) + 2;
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count = 2;
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}
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else
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{
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pos = (flags & 0x1f) + 1;
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count = 1;
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}
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int src = dst - pos;
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Binary.CopyOverlapped (output, src, dst, count);
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dst += count;
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}
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}
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}
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void UnpackRGBA ()
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{
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int dst = 0;
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for (;;)
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{
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byte flags = m_input.ReadByte();
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if (0xff == flags || dst >= m_output.Length)
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break;
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int count, pos, src;
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if (0 == (flags & 0xc0))
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 33;
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else
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count = (flags & 0x1f) + 1;
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = 0xff;
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}
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}
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else if ((flags & 0xc0) == 0x40)
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 34;
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else
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count = (flags & 0x1f) + 2;
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byte b = m_input.ReadByte();
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byte g = m_input.ReadByte();
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byte r = m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = b;
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m_output[dst++] = g;
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m_output[dst++] = r;
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m_output[dst++] = 0xff;
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}
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}
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else if ((flags & 0xc0) == 0x80)
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{
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if (0 == (flags & 0x30))
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{
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count = (flags & 0xf) + 1;
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pos = m_input.ReadByte() + 2;
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}
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else if ((flags & 0x30) == 0x10)
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 2;
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count = m_input.ReadByte() + 1;
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}
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else if ((flags & 0x30) == 0x20)
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{
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byte tmp = m_input.ReadByte();
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pos = ((((flags & 0xf) << 8) + tmp) << 8) + m_input.ReadByte() + 4098;
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count = m_input.ReadByte() + 1;
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}
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else
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{
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if (0 != (flags & 8))
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pos = ((flags & 0x7) << 8) + m_input.ReadByte() + 10;
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else
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pos = (flags & 0x7) + 2;
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count = 1;
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}
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src = dst - 4 * pos;
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Binary.CopyOverlapped (m_output, src, dst, count*4);
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dst += count*4;
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}
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else
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{
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int y, x;
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if (0 == (flags & 0x30))
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{
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if (0 == (flags & 0xc))
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{
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y = ((flags & 0x3) << 8) + m_input.ReadByte() + 16;
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x = 0;
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}
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else if ((flags & 0xc) == 0x4)
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{
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y = ((flags & 0x3) << 8) + m_input.ReadByte() + 16;
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x = -1;
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}
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else if ((flags & 0xc) == 0x8)
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{
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y = ((flags & 0x3) << 8) + m_input.ReadByte() + 16;
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x = 1;
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}
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else
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{
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pos = ((flags & 0x3) << 8) + m_input.ReadByte() + 2058;
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src = dst - 4 * pos;
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Buffer.BlockCopy (m_output, src, m_output, dst, 4);
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dst += 4;
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continue;
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}
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}
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else if ((flags & 0x30) == 0x10)
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{
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y = (flags & 0xf) + 1;
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x = 0;
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}
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else if ((flags & 0x30) == 0x20)
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{
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y = (flags & 0xf) + 1;
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x = -1;
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}
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else
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{
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y = (flags & 0xf) + 1;
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x = 1;
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}
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src = dst + (x - m_width * y) * 4;
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Buffer.BlockCopy (m_output, src, m_output, dst, 4);
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dst += 4;
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}
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}
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}
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public void UnpackAlpha ()
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{
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int dst = 3;
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for (;;)
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{
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byte flags = m_input.ReadByte();
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if (0xff == flags || dst >= m_output.Length)
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break;
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int count, pos;
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if (0 == (flags & 0xc0))
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 33;
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else
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count = (flags & 0x1f) + 1;
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for (int i = 0; i < count; ++i)
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{
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m_output[dst] = m_input.ReadByte();
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dst += 4;
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}
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}
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else if (0x40 == (flags & 0xc0))
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 35;
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else
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count = (flags & 0x1f) + 3;
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byte a = m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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{
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m_output[dst] = a;
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dst += 4;
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}
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}
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else
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{
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if (0x80 == (flags & 0xc0))
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{
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if (0 == (flags & 0x30))
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{
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count = (flags & 0xf) + 2;
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pos = m_input.ReadByte() + 2;
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}
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else if (0x10 == (flags & 0x30))
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 3;
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count = m_input.ReadByte() + 4;
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}
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else if ((flags & 0x30) == 0x20)
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 3;
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count = 3;
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}
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else
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 3;
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count = 4;
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}
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}
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else if (0 != (flags & 0x20))
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{
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pos = (flags & 0x1f) + 2;
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count = 2;
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}
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else
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{
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pos = (flags & 0x1f) + 1;
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count = 1;
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}
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int src = dst - 4 * pos;
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for (int i = 0; i < count; ++i)
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{
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m_output[dst] = m_output[src];
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src += 4;
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dst += 4;
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}
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}
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}
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}
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void UnpackRGB ()
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{
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int dst = 0;
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for (;;)
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{
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byte flags = m_input.ReadByte();
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if (0xff == flags || dst >= m_output.Length)
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break;
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int count, pos, src;
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if (0 == (flags & 0xc0))
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 33;
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else
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count = (flags & 0x1f) + 1;
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = m_input.ReadByte();
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m_output[dst++] = m_input.ReadByte();
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}
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}
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else if ((flags & 0xc0) == 0x40)
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{
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if (0 != (flags & 0x20))
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count = ((flags & 0x1f) << 8) + m_input.ReadByte() + 34;
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else
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count = (flags & 0x1f) + 2;
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byte b = m_input.ReadByte();
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byte g = m_input.ReadByte();
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byte r = m_input.ReadByte();
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for (int i = 0; i < count; ++i)
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{
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m_output[dst++] = b;
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m_output[dst++] = g;
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m_output[dst++] = r;
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}
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}
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else if ((flags & 0xc0) == 0x80)
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{
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if (0 == (flags & 0x30))
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{
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count = (flags & 0xf) + 1;
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pos = m_input.ReadByte() + 2;
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}
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else if ((flags & 0x30) == 0x10)
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{
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pos = ((flags & 0xf) << 8) + m_input.ReadByte() + 2;
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count = m_input.ReadByte() + 1;
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}
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else if ((flags & 0x30) == 0x20)
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{
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byte tmp = m_input.ReadByte();
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pos = ((((flags & 0xf) << 8) + tmp) << 8) + m_input.ReadByte() + 4098;
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count = m_input.ReadByte() + 1;
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}
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else
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{
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if (0 != (flags & 8))
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pos = ((flags & 0x7) << 8) + m_input.ReadByte() + 10;
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else
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pos = (flags & 0x7) + 2;
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count = 1;
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}
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src = dst - 3 * pos;
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Binary.CopyOverlapped (m_output, src, dst, count*3);
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dst += count*3;
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}
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else
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{
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int y, x;
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if (0 == (flags & 0x30))
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{
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if (0 == (flags & 0xc))
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{
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y = ((flags & 0x3) << 8) + m_input.ReadByte() + 16;
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x = 0;
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}
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else if ((flags & 0xc) == 0x4)
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{
|
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y = ((flags & 0x3) << 8) + m_input.ReadByte() + 16;
|
|
x = -1;
|
|
}
|
|
else if ((flags & 0xc) == 0x8)
|
|
{
|
|
y = ((flags & 0x3) << 8) + m_input.ReadByte() + 16;
|
|
x = 1;
|
|
}
|
|
else
|
|
{
|
|
pos = ((flags & 0x3) << 8) + m_input.ReadByte() + 2058;
|
|
src = dst - 3 * pos;
|
|
m_output[dst++] = m_output[src++];
|
|
m_output[dst++] = m_output[src++];
|
|
m_output[dst++] = m_output[src];
|
|
continue;
|
|
}
|
|
}
|
|
else if ((flags & 0x30) == 0x10)
|
|
{
|
|
y = (flags & 0xf) + 1;
|
|
x = 0;
|
|
}
|
|
else if ((flags & 0x30) == 0x20)
|
|
{
|
|
y = (flags & 0xf) + 1;
|
|
x = -1;
|
|
}
|
|
else
|
|
{
|
|
y = (flags & 0xf) + 1;
|
|
x = 1;
|
|
}
|
|
src = dst + (x - m_width * y) * 3;
|
|
m_output[dst++] = m_output[src++];
|
|
m_output[dst++] = m_output[src++];
|
|
m_output[dst++] = m_output[src];
|
|
}
|
|
}
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool disposed = false;
|
|
|
|
public void Dispose ()
|
|
{
|
|
Dispose (true);
|
|
GC.SuppressFinalize (this);
|
|
}
|
|
|
|
protected virtual void Dispose (bool disposing)
|
|
{
|
|
if (!disposed)
|
|
{
|
|
if (disposing)
|
|
m_input.Dispose();
|
|
disposed = true;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
}
|