implemented OWP audio files.

ArcFormats/ArcFormats.csproj

@@ -161,6 +161,7 @@
     <Compile Include="RealLive\ArcG00.cs" />
     <Compile Include="RealLive\ArcOVK.cs" />
     <Compile Include="RealLive\AudioNWA.cs" />
+    <Compile Include="RealLive\AudioOWP.cs" />
     <Compile Include="RealLive\ImageG00.cs" />
     <Compile Include="RealLive\ImagePDT.cs" />
     <Compile Include="Silky\ImageZIT.cs" />

ArcFormats/RealLive/AudioOWP.cs

@@ -0,0 +1,46 @@
+//! \file       AudioOWP.cs
+//! \date       Fri Jul 29 11:25:09 2016
+//! \brief      RealLive obfuscated OGG files.
+//
+// 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.ComponentModel.Composition;
+using System.IO;
+using System.Security.Cryptography;
+
+namespace GameRes.Formats.RealLive
+{
+    [Export(typeof(AudioFormat))]
+    public class OwpAudio : AudioFormat
+    {
+        public override string         Tag { get { return "OWP"; } }
+        public override string Description { get { return "RealLive engine obfuscated OGG audio"; } }
+        public override uint     Signature { get { return 0x6A5E5E76; } } // 'OggS' ^ 0x39
+
+        public override SoundInput TryOpen (Stream file)
+        {
+            Stream input = new CryptoStream (file, new XorTransform (0x39), CryptoStreamMode.Read);
+            input = new SeekableStream (input);
+            return OggAudio.Instance.TryOpen (input);
+        }
+    }
+}