implemented 'LEAFPACK' archives and LFG images.

2026-07-08 01:30:18 +08:00 · 2018-11-07 11:50:38 +04:00
parent 57399ff6eb
commit f787e608c9
10 changed files with 614 additions and 0 deletions
--- a/ArcFormats/Leaf/ImageBJR.cs
+++ b/ArcFormats/Leaf/ImageBJR.cs
@@ -0,0 +1,115 @@
+//! \file       ImageBJR.cs
+//! \date       2018 Nov 06
+//! \brief      Leaf obfuscated bitmap.
+//
+// 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;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+
+namespace GameRes.Formats.Leaf
+{
+    internal class BjrMetaData : BmpMetaData
+    {
+        public bool IsFlipped;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class BjrFormat : ImageFormat
+    {
+        public override string         Tag { get { return "BJR"; } }
+        public override string Description { get { return "Leaf obfuscated bitmap"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            if (!file.Name.HasExtension (".bjr"))
+                return null;
+            var header = file.ReadHeader (0x36);
+            if (!header.AsciiEqual ("BM"))
+                return null;
+            int height = header.ToInt32 (0x16);
+            return new BjrMetaData {
+                Width = header.ToUInt32 (0x12),
+                Height = (uint)Math.Abs (height),
+                BPP = header.ToUInt16 (0x1C),
+                ImageLength = header.ToUInt32 (2),
+                ImageOffset = header.ToUInt32 (0xA),
+                IsFlipped = height > 0,
+            };
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var meta = (BjrMetaData)info;
+            int height = (int)meta.Height;
+            int stride = ((int)meta.Width * (meta.BPP / 8) + 3) & ~3;
+            file.Position = meta.ImageOffset;
+            var source = file.ReadBytes (stride * height);
+
+            var name_bytes = Encodings.cp932.GetBytes (Path.GetFileName (meta.FileName));
+            int line_key = 0;
+            int even_key = 0xFF;
+            int odd_key  = 0;
+            for (int i = 0; i < name_bytes.Length; ++i)
+            {
+                line_key ^= name_bytes[i];
+                even_key += name_bytes[i];
+                odd_key  -= name_bytes[i];
+            }
+
+            var pixels = new byte[source.Length];
+            int dst = 0;
+            for (int y = 0; y < height; ++y)
+            {
+                line_key += 7;
+                int src = (line_key % height) * stride;
+                for (int x = 0; x < stride; ++x)
+                {
+                    if ((x & 1) == 0)
+                        pixels[dst+x] = (byte)(even_key - source[src+x]);
+                    else
+                        pixels[dst+x] = (byte)(odd_key  + source[src+x]);
+                }
+                dst += stride;
+            }
+            PixelFormat format;
+            if (24 == meta.BPP)
+                format = PixelFormats.Bgr24;
+            else if (32 == meta.BPP)
+                format = PixelFormats.Bgr32;
+            else // FIXME read palette
+                format = PixelFormats.Gray8;
+            if (meta.IsFlipped)
+                return ImageData.CreateFlipped (info, format, null, pixels, stride);
+            else
+                return ImageData.Create (info, format, null, pixels, stride);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("BjrFormat.Write not implemented");
+        }
+    }
+}