implemented ZIT images.

ArcFormats/ArcFormats.csproj

@@ -88,6 +88,7 @@
     <Compile Include="KiriKiri\ChainReactionCrypt.cs" />
     <Compile Include="MnoViolet\ImageDIF.cs" />
     <Compile Include="NitroPlus\ArcNPK.cs" />
+    <Compile Include="Silky\ImageZIT.cs" />
     <Compile Include="SimpleEncryption.cs" />
     <Compile Include="Slg\AudioVOI.cs" />
     <Compile Include="Slg\ImageALB.cs" />

ArcFormats/Silky/ImageZIT.cs

@@ -0,0 +1,181 @@
+//! \file       ImageZIT.cs
+//! \date       Mon Apr 04 18:59:57 2016
+//! \brief      Silky's image format.
+//
+// Copyright (C) 2016 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;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Silky
+{
+    internal class ZitMetaData : ImageMetaData
+    {
+        public ushort   Type;
+        public int      Colors;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class ZitFormat : ImageFormat
+    {
+        public override string         Tag { get { return "ZIT"; } }
+        public override string Description { get { return "Silky's image format"; } }
+        public override uint     Signature { get { return 0x1803545A; } } // 'ZT'
+
+        public ZitFormat ()
+        {
+            Signatures = new uint[] { 0x1803545A, 0x2084545A, 0x8803545A };
+        }
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            var header = new byte[0x10];
+            if (header.Length != stream.Read (header, 0, header.Length))
+                return null;
+            return new ZitMetaData
+            {
+                Type = LittleEndian.ToUInt16 (header, 2),
+                Width = LittleEndian.ToUInt16 (header, 8),
+                Height = LittleEndian.ToUInt16 (header, 10),
+                BPP = 32,
+                Colors = LittleEndian.ToUInt16 (header, 4),
+            };
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            using (var reader = new ZitReader (stream, (ZitMetaData)info))
+            {
+                reader.Unpack();
+                return ImageData.Create (info, PixelFormats.Bgra32, null, reader.Data);
+            }
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("ZitFormat.Write not implemented");
+        }
+    }
+
+    internal class ZitReader : IDisposable
+    {
+        BinaryReader    m_input;
+        byte[]          m_output;
+        int             m_width;
+        int             m_height;
+        ushort          m_type;
+        int             m_colors;
+
+        public byte[] Data { get { return m_output; } }
+
+        public ZitReader (Stream input, ZitMetaData info)
+        {
+            m_input = new ArcView.Reader (input);
+            m_width = (int)info.Width;
+            m_height = (int)info.Height;
+            m_type = info.Type;
+            m_colors = info.Colors;
+            m_output = new byte[m_width*m_height*4];
+        }
+
+        public void Unpack ()
+        {
+            m_input.BaseStream.Position = 0x10;
+            switch (m_type)
+            {
+            case 0x1803: Unpack1(); break;
+            case 0x2084: Unpack2(); break;
+            case 0x8803: Unpack3(); break;
+            default:
+                throw new InvalidFormatException();
+            }
+        }
+
+        void Unpack1 ()
+        {
+            int dst = 0;
+            while (dst < m_output.Length)
+            {
+                byte b = m_input.ReadByte();
+                byte g = m_input.ReadByte();
+                byte r = m_input.ReadByte();
+                if (b != 0 || g != 0xFF || r != 0)
+                {
+                    m_output[dst++] = b;
+                    m_output[dst++] = g;
+                    m_output[dst++] = r;
+                    m_output[dst++] = 0xFF;
+                }
+                else
+                {
+                    LittleEndian.Pack (0xFFFFu, m_output, dst);
+                    dst += 4;
+                }
+            }
+        }
+
+        void Unpack2 ()
+        {
+            m_input.Read (m_output, 0, m_output.Length);
+        }
+
+        void Unpack3 ()
+        {
+            var palette = m_input.ReadBytes (m_colors * 3);
+            int dst = 0;
+            while (dst < m_output.Length)
+            {
+                int index = m_input.ReadByte() * 3;
+                byte b = palette[index];
+                byte g = palette[index+1];
+                byte r = palette[index+2];
+                if (b != 0 || g != 0xFF || r != 0)
+                {
+                    m_output[dst++] = b;
+                    m_output[dst++] = g;
+                    m_output[dst++] = r;
+                    m_output[dst++] = 0xFF;
+                }
+                else
+                {
+                    LittleEndian.Pack (0xFF00u, m_output, dst);
+                    dst += 4;
+                }
+            }
+        }
+
+        #region IDisposable Members
+        bool _disposed = false;
+        public void Dispose ()
+        {
+            if (!_disposed)
+            {
+                m_input.Dispose();
+                _disposed = true;
+            }
+        }
+        #endregion
+    }
+}

supported.html

@@ -767,6 +767,9 @@ Sister Contrast!
 <tr class="odd"><td>*.psb</td><td><tt>PSB</tt></td><td>No</td><td>E-mote</td><td>
 Angenehm Platz -Kleiner Garten Sie Erstellen-<br/>
 </td></tr>
+<tr><td>*.zit</td><td><tt>ZT</tt></td><td>No</td><td>Silky's</td><td>
+Sweet ~Hanjuku na Tenshi-tachi~<br/>
+</td></tr>
 </table>
 <p><a name="note-1" class="footnote">1</a> Non-encrypted only</p>
 </body>