(RpgMaker): moved to Experimental project.

Experimental/RPGMaker/AudioRPGMV.cs

@@ -0,0 +1,58 @@
+//! \file       AudioRPGMV.cs
+//! \date       2018 Oct 14
+//! \brief      RPG Maker encrypted OGG audio.
+//
+// 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;
+
+namespace GameRes.Formats.RPGMaker
+{
+    [Export(typeof(AudioFormat))]
+    public sealed class RpgmvoAudio : AudioFormat
+    {
+        public override string         Tag { get { return "RPGMVO"; } }
+        public override string Description { get { return "RPG Maker audio format (Ogg/Vorbis)"; } }
+        public override uint     Signature { get { return 0x4D475052; } } // 'RPGMV'
+        public override bool      CanWrite { get { return false; } }
+
+        public override SoundInput TryOpen (IBinaryStream file)
+        {
+            var header = file.ReadHeader (0x14);
+            if (header[4] != 'V')
+                return null;
+            var key = RpgmvDecryptor.LastKey ?? RpgmvDecryptor.FindKeyFor (file.Name);
+            if (null == key)
+                return null;
+            for (int i = 0; i < 4; ++i)
+                header[0x10+i] ^= key[i];
+            if (!header.AsciiEqual (0x10, "OggS"))
+            {
+                RpgmvDecryptor.LastKey = null;
+                return null;
+            }
+            RpgmvDecryptor.LastKey = key;
+            var ogg = RpgmvDecryptor.DecryptStream (file, key);
+            return OggAudio.Instance.TryOpen (ogg);
+        }
+    }
+}