implemented DxLib MED archives.

ArcFormats/ArcFormats.csproj

@@ -73,6 +73,7 @@
     <Compile Include="Ankh\ArcGRP.cs" />
     <Compile Include="ArcCG.cs" />
     <Compile Include="ArcZIP.cs" />
+    <Compile Include="AudioVOC.cs" />
     <Compile Include="AZSys\WidgetAZ.xaml.cs">
       <DependentUpon>WidgetAZ.xaml</DependentUpon>
     </Compile>
@@ -85,6 +86,8 @@
     <Compile Include="Cri\BigEndianReader.cs" />
     <Compile Include="Cri\ImageSPC.cs" />
     <Compile Include="Cri\ImageXTX.cs" />
+    <Compile Include="DxLib\ArcMED.cs" />
+    <Compile Include="elf\ArcVOL.cs" />
     <Compile Include="EmonEngine\ArcEME.cs" />
     <Compile Include="EmonEngine\ImageBMP.cs" />
     <Compile Include="Entis\ErisaMatrix.cs" />

ArcFormats/DxLib/ArcDX.cs

@@ -61,7 +61,7 @@ namespace GameRes.Formats.DxLib
         public DxOpener ()
         {
             Extensions = new string[] { "dxa", "hud", "usi", "med", "dat" };
-            Signatures = new uint[] { 0x19EF8ED4, 0xA9FCCEDD, 0x0AEE0FD3, 0x5523F211, 0 };
+            Signatures = new uint[] { 0x19EF8ED4, 0xA9FCCEDD, 0x0AEE0FD3, 0x5523F211, 0x5524F211, 0 };
         }
 
         public static IList<byte[]> KnownKeys = new List<byte[]>();

ArcFormats/DxLib/ArcMED.cs

@@ -0,0 +1,78 @@
+//! \file       ArcMED.cs
+//! \date       Mon May 30 12:35:24 2016
+//! \brief      DxLib resource archive.
+//
+// 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.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.DxLib
+{
+    [Export(typeof(ArchiveFormat))]
+    public class MedOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "MED"; } }
+        public override string Description { get { return "DxLib engine resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        static readonly Lazy<ImageFormat> PrsFormat = new Lazy<ImageFormat> (() => ImageFormat.FindByTag ("PRS"));
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.View.AsciiEqual (0, "MD"))
+                return null;
+            uint entry_length = file.View.ReadUInt16 (4);
+            int count = file.View.ReadUInt16 (6);
+            if (entry_length <= 8 || !IsSaneCount (count))
+                return null;
+
+            uint name_length = entry_length - 8;
+            uint index_offset = 0x10;
+            var dir = new List<Entry> (count);
+            for (int i = 0; i < count; ++i)
+            {
+                var name = file.View.ReadString (index_offset, name_length);
+                index_offset += name_length;
+                uint offset = file.View.ReadUInt32 (index_offset+4);
+
+                var entry = new AutoEntry (name, () => {
+                    uint signature = file.View.ReadUInt32 (offset);
+                    if (0x4259 == (signature & 0xFFFF)) // 'YB'
+                        return PrsFormat.Value;
+                    return AutoEntry.DetectFileType (signature);
+                });
+                entry.Size   = file.View.ReadUInt32 (index_offset);
+                entry.Offset = offset;
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                dir.Add (entry);
+                index_offset += 8;
+            }
+            return new ArcFile (file, this, dir);
+        }
+    }
+}