(Hypatia): LPK archives and LSG images.

2026-07-08 01:30:18 +08:00 · 2022-04-29 13:02:06 +04:00
parent c5e13f6db1
commit 63972014d7
3 changed files with 239 additions and 0 deletions
--- a/ArcFormats/Hypatia/ImageLSG.cs
+++ b/ArcFormats/Hypatia/ImageLSG.cs
@@ -0,0 +1,100 @@
+//! \file       ImageLSG.cs
+//! \date       2022 Apr 12
+//! \brief      Kogado image format.
+//
+// Copyright (C) 2022 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;
+
+namespace GameRes.Formats.Kogado
+{
+    internal class LsgMetaData : ImageMetaData
+    {
+        public int BitmapSize;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class LsgFormat : ImageFormat
+    {
+        public override string         Tag { get { return "LSG"; } }
+        public override string Description { get { return "Kogado image format"; } }
+        public override uint     Signature { get { return 0x4D42; } } // 'BM'
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            var header = file.ReadHeader (0x14);
+            var info = new LsgMetaData {
+                Width  = header.ToUInt32 (0x0C),
+                Height = header.ToUInt32 (0x10),
+                BPP    = header.ToInt32 (8),
+                BitmapSize = header.ToInt32 (4),
+            };
+            if (info.BPP != 8 && info.BPP != 24)
+                return null;
+            return info;
+        }
+
+        static readonly string DefaultPaletteName = "base.pal";
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var meta = (LsgMetaData)info;
+            file.Position = 0x14;
+            var pixels = file.ReadBytes (meta.BitmapSize);
+            PixelFormat format;
+            BitmapPalette palette = null;
+            if (meta.BPP == 8)
+            {
+                format = PixelFormats.Indexed8;
+                palette = ReadDefaultPalette (file.Name);
+                if (null == palette)
+                    format = PixelFormats.Gray8;
+            }
+            else
+            {
+                format = PixelFormats.Bgr24;
+            }
+            return ImageData.Create (info, format, palette, pixels);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("LsgFormat.Write not implemented");
+        }
+
+        internal BitmapPalette ReadDefaultPalette (string filename)
+        {
+            var pal_name = Path.ChangeExtension (filename, ".pal");
+            if (!VFS.FileExists (pal_name))
+                pal_name = VFS.ChangeFileName (filename, DefaultPaletteName);
+            if (!VFS.FileExists (pal_name))
+                return null;
+            using (var input = VFS.OpenStream (pal_name))
+            {
+                return ReadPalette (input, 0x100, PaletteFormat.Rgb);
+            }
+        }
+    }
+}