implemented D.O.'s VRS, GGA and GGS images.

2026-07-08 01:30:18 +08:00 · 2018-01-16 11:53:25 +04:00
parent c270574f52
commit aa93dabd2d
8 changed files with 665 additions and 20 deletions
--- a/ArcFormats/Ikura/ImageVRS.cs
+++ b/ArcFormats/Ikura/ImageVRS.cs
@@ -0,0 +1,132 @@
+//! \file       ImageVRS.cs
+//! \date       2018 Jan 16
+//! \brief      D.O. image format.
+//
+// Copyright (C) 2018 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;
+using System.Windows.Media.Imaging;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Ikura
+{
+    [Export(typeof(ImageFormat))]
+    public class DoFormat : ImageFormat
+    {
+        public override string         Tag { get { return "VRS/DO"; } }
+        public override string Description { get { return "D.O. image format"; } }
+        public override uint     Signature { get { return 0x4F44; } } // 'DO'
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            var header = file.ReadHeader (8);
+            return new ImageMetaData {
+                Width = header.ToUInt16 (4),
+                Height = header.ToUInt16 (6),
+                BPP = 8,
+            };
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var reader = new DoReader (file, info);
+            reader.Unpack();
+            return ImageData.Create (info, reader.Format, reader.Palette, reader.Data);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("DoFormat.Write not implemented");
+        }
+    }
+
+    internal class DoReader
+    {
+        IBinaryStream       m_input;
+        byte[]              m_output;
+
+        public PixelFormat    Format { get; private set; }
+        public BitmapPalette Palette { get; private set; }
+        public byte[]           Data { get { return m_output; } }
+
+        public DoReader (IBinaryStream input, ImageMetaData info)
+        {
+            m_input = input;
+            m_output = new byte[info.Width * info.Height];
+            Format = PixelFormats.Indexed8;
+        }
+
+        public void Unpack ()
+        {
+            m_input.Position = 12;
+            Palette = ReadPalette();
+            int dst = 0;
+            while (dst < m_output.Length)
+            {
+                int count;
+                byte ctl = m_input.ReadUInt8();
+                if (0 == (ctl & 0xC0))
+                {
+                    count = ctl & 0x3F;
+                    if (0 == count)
+                        count = m_input.ReadUInt8() + 0x40;
+                    m_input.Read (m_output, dst, count);
+                }
+                else if (0 == (ctl & 0x80))
+                {
+                    count = ctl & 0x3F;
+                    if (0 == count)
+                        count = m_input.ReadUInt8() + 0x40;
+                    ++count;
+                    Binary.CopyOverlapped (m_output, dst-1, dst, count);
+                }
+                else
+                {
+                    int offset = (m_input.ReadUInt8() | (ctl & 0xF) << 8) + 1;
+                    count = (ctl >> 4) & 7;
+                    if (0 == count)
+                        count = m_input.ReadUInt8() + 8;
+                    count += 2;
+                    Binary.CopyOverlapped (m_output, dst-offset, dst, count);
+                }
+                dst += count;
+            }
+        }
+
+        BitmapPalette ReadPalette ()
+        {
+            var palette_data = m_input.ReadBytes (0x300);
+            if (palette_data.Length != 0x300)
+                throw new EndOfStreamException();
+            int src = 0;
+            var color_map = new Color[0x100];
+            for (int i = 0; i < 0x100; ++i)
+            {
+                color_map[i] = Color.FromRgb (palette_data[src+1], palette_data[src+2], palette_data[src]);
+                src += 3;
+            }
+            return new BitmapPalette (color_map);
+        }
+    }
+}