implemented GPK2 archives and GFB images.

ArcFormats/ArcFormats.csproj

@@ -51,6 +51,7 @@
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.IO.Compression" />
     <Reference Include="System.Xaml" />
     <Reference Include="System.Xml.Linq" />
@@ -73,6 +74,8 @@
     <Compile Include="Debonosu\ArcPAK.cs" />
     <Compile Include="elf\ImageG24.cs" />
     <Compile Include="elf\ImageGP8.cs" />
+    <Compile Include="Gpk2\ArcGPK2.cs" />
+    <Compile Include="Gpk2\ImageGFB.cs" />
     <Compile Include="Sas5\ArcIAR.cs" />
     <Compile Include="Sas5\ArcSec5.cs" />
     <Compile Include="Sas5\ArcWAR.cs" />

ArcFormats/Gpk2/ArcGPK2.cs

@@ -0,0 +1,73 @@
+//! \file       ArcGPK2.cs
+//! \date       Sun Oct 25 12:53:49 2015
+//! \brief      GPK2 resource archive.
+//
+// Copyright (C) 2015 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.Collections.Generic;
+using System.ComponentModel.Composition;
+
+namespace GameRes.Formats.Gpk2
+{
+    [Export(typeof(ArchiveFormat))]
+    public class GpkOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "GPK2"; } }
+        public override string Description { get { return "GPK2 resource archive"; } }
+        public override uint     Signature { get { return 0x324B5047; } } // 'GPK2'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        public GpkOpener ()
+        {
+            Extensions = new string[] { "" };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            uint index_offset = file.View.ReadUInt32 (4);
+            if (index_offset >= file.MaxOffset)
+                return null;
+            int count = file.View.ReadInt32 (index_offset);
+            if (!IsSaneCount (count))
+                return null;
+            index_offset += 4;
+            uint index_size = (uint)(count * 0x88);
+            if (index_size > file.View.Reserve (index_offset, index_size))
+                return null;
+
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                string name = file.View.ReadString (index_offset+8, 0x80);
+                var entry = FormatCatalog.Instance.Create<Entry> (name);
+                entry.Offset = file.View.ReadUInt32 (index_offset);
+                entry.Size   = file.View.ReadUInt32 (index_offset+4);
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 0x88;
+            }
+            return new ArcFile (file, this, dir);
+        }
+    }
+}

ArcFormats/Gpk2/ImageGFB.cs

@@ -0,0 +1,150 @@
+//! \file       ImageGFB.cs
+//! \date       Sun Oct 25 13:06:47 2015
+//! \brief      GPK2 image resource.
+//
+// Copyright (C) 2015 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 System.Windows.Media.Imaging;
+using GameRes.Compression;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Gpk2
+{
+    internal class GfbMetaData : ImageMetaData
+    {
+        public int  PackedSize;
+        public int  UnpackedSize;
+        public int  DataOffset;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class GfbFormat : ImageFormat
+    {
+        public override string         Tag { get { return "GFB"; } }
+        public override string Description { get { return "GPK2 image format"; } }
+        public override uint     Signature { get { return 0x20424647; } } // 'GFB '
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            var header = new byte[0x40];
+            if (header.Length != stream.Read (header, 0, header.Length))
+                return null;
+            return new GfbMetaData
+            {
+                Width   = LittleEndian.ToUInt32 (header, 0x1C),
+                Height  = LittleEndian.ToUInt32 (header, 0x20),
+                BPP     = LittleEndian.ToUInt16 (header, 0x26),
+                PackedSize = LittleEndian.ToInt32 (header,0x0C),
+                UnpackedSize = LittleEndian.ToInt32 (header,0x10),
+                DataOffset = LittleEndian.ToInt32 (header,0x14),
+            };
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            var meta = (GfbMetaData)info;
+            BitmapPalette palette = null;
+            if (8 == meta.BPP && meta.DataOffset != 0x40)
+            {
+                stream.Position = 0x40;
+                palette = ReadPalette (stream, meta.DataOffset - 0x40);
+            }
+
+            stream.Position = meta.DataOffset;
+            byte[] pixels = new byte[meta.UnpackedSize];
+            if (0 != meta.PackedSize)
+            {
+                using (var lzss = new LzssStream (stream, LzssMode.Decompress, true))
+                    lzss.Read (pixels, 0, pixels.Length);
+            }
+            else
+                stream.Read (pixels, 0, pixels.Length);
+
+            PixelFormat format;
+            switch (meta.BPP)
+            {
+            case 32:
+                if (HasAlphaChannel (pixels))
+                    format = PixelFormats.Bgra32;
+                else
+                    format = PixelFormats.Bgr32;
+                break;
+
+            case 24:
+                format = PixelFormats.Bgr24;
+                break;
+
+            case 16:
+                format = PixelFormats.Bgr565;
+                break;
+
+            case 8:
+                if (null != palette)
+                    format = PixelFormats.Indexed8;
+                else
+                    format = PixelFormats.Gray8;
+                break;
+
+            default:
+                throw new NotSupportedException ("Not supported GFB color depth");
+            }
+            int stride = pixels.Length / (int)info.Height;
+
+            return ImageData.CreateFlipped (info, format, palette, pixels, stride);
+        }
+
+        BitmapPalette ReadPalette (Stream input, int palette_size)
+        {
+            palette_size = Math.Min (0x400, palette_size);
+            var palette_data = new byte[palette_size];
+            if (palette_data.Length != input.Read (palette_data, 0, palette_data.Length))
+                throw new EndOfStreamException();
+            int color_size = palette_size / 0x100;
+            var palette = new Color[0x100];
+            for (int i = 0; i < palette.Length; ++i)
+            {
+                int c = i * color_size;
+                palette[i] = Color.FromRgb (palette_data[c+2], palette_data[c+1], palette_data[c]);
+            }
+            return new BitmapPalette (palette);
+        }
+
+        static bool HasAlphaChannel (byte[] pixels)
+        {
+            for (int p = 3; p < pixels.Length; p += 4)
+            {
+                if (pixels[p] > 0)
+                    return true;
+            }
+            return false;
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("GfbFormat.Write not implemented");
+        }
+    }
+}

supported.html

@@ -441,6 +441,10 @@ Houkago ~Nureta Seifuku~<br/>
 Yakata ~Kannou Kitan~<br/>
 </td></tr>
 <tr class="odd"><td>*.bsg</td><td><tt>BSS-Graphics</tt><br/><tt>BSS-Composition</tt></td><td>No</td></tr>
+<tr><td>*</td><td><tt>GPK2</tt></td><td>No</td><td rowspan="2">Studio Ryokucha</td><td rowspan="2">
+Princess Serenade<br/>
+</td></tr>
+<tr><td>*.gfb</td><td><tt>GFB</tt></td><td>No</td></tr>
 </table>
 <p><a name="note-1" class="footnote">1</a> Non-encrypted only</p>
 </body>