(Legacy): added some unfinished implementations.

2026-07-08 01:30:18 +08:00 · 2018-09-12 15:31:26 +04:00
parent 4d8c9a159d
commit 87e32c926d
5 changed files with 1120 additions and 0 deletions
--- a/Legacy/StudioJikkenshitsu/ImageGRD.cs
+++ b/Legacy/StudioJikkenshitsu/ImageGRD.cs
@@ -0,0 +1,130 @@
+//! \file       ImageGRD.cs
+//! \date       2018 Jul 27
+//! \brief      Studio Jikkenshitsu 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;
+
+// [030411][Studio Jikkenshitsu] Giin Oyako
+
+namespace GameRes.Formats.Jikkenshitsu
+{
+    internal class GrdMetaData : ImageMetaData
+    {
+        public int  PackedLength;
+        public int  AlphaLength;
+        public bool IsEncrypted;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class GrdFormat : ImageFormat
+    {
+        public override string         Tag { get { return "GRD/SJ"; } }
+        public override string Description { get { return "Studio Jikkenshitsu image format"; } }
+        public override uint     Signature { get { return 0x20445247; } } // 'GRD '
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            var header = file.ReadHeader (0x18);
+            return new GrdMetaData {
+                Width  = header.ToUInt16 (6),
+                Height = header.ToUInt16 (8),
+                BPP    = header[4],
+                PackedLength = header.ToInt32 (0xC),
+                AlphaLength  = header.ToInt32 (0x10),
+                IsEncrypted  = (header[5] & 0x80) != 0,
+            };
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var reader = new GrdReader (file, (GrdMetaData)info);
+            var pixels = reader.Unpack();
+            return ImageData.Create (info, reader.Format, null, pixels);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("GrdFormat.Write not implemented");
+        }
+    }
+
+    internal class GrdReader
+    {
+        IBinaryStream   m_input;
+        GrdMetaData     m_info;
+        byte[]          m_output;
+
+        public PixelFormat Format { get; private set; }
+
+        public GrdReader (IBinaryStream input, GrdMetaData info)
+        {
+            m_input = input;
+            m_info = info;
+            if (8 == m_info.BPP)
+                Format = PixelFormats.Gray8;
+            else if (24 == m_info.BPP)
+                Format = PixelFormats.Bgr24;
+            else
+                throw new InvalidFormatException();
+            int image_size = (int)m_info.Width * (int)m_info.Height;
+            if (m_info.BPP >= 8)
+                image_size *= (m_info.BPP + 1) / 8;
+            else
+                image_size = image_size * m_info.BPP / 8;
+            m_output = new byte[image_size];
+        }
+
+        public byte[] Unpack ()
+        {
+            m_input.Position = 0x18;
+            var input = m_input.ReadBytes (m_info.PackedLength);
+            if (m_info.IsEncrypted)
+                DecryptData (input, 0, input.Length & -8);
+            using (var mem = new MemoryStream (input))
+            using (var lzss = new LzssStream (mem))
+                lzss.Read (m_output, 0, m_output.Length);
+            if (m_info.AlphaLength > 0)
+            {
+                var alpha = new byte[m_info.AlphaLength];
+                using (var lzss = new LzssStream (m_input.AsStream, LzssMode.Decompress, true))
+                    lzss.Read (alpha, 0, alpha.Length);
+            }
+            return m_output;
+        }
+
+        void DecryptData (byte[] data, int pos, int length)
+        {
+            for (int i = 0; i < length; i += 8)
+            {
+                DecryptBlock (data, pos + i);
+            }
+        }
+
+        void DecryptBlock (byte[] data, int pos)
+        {
+        }
+    }
+}