Refactor image classes and split them to smaller files.

2025-12-16 19:24:25 +00:00 · 2018-07-23 23:25:43 +01:00
parent 55ca2d23b6
commit ed88989642
445 changed files with 50086 additions and 34342 deletions
--- a/DiscImageChef.DiscImages/DiscJuggler/Identify.cs
+++ b/DiscImageChef.DiscImages/DiscJuggler/Identify.cs
@@ -0,0 +1,73 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Identify.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Identifies DiscJuggler disc images.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This library is free software; you can redistribute it and/or modify
+//     it under the terms of the GNU Lesser General Public License as
+//     published by the Free Software Foundation; either version 2.1 of the
+//     License, or (at your option) any later version.
+//
+//     This library is distributed in the hope that it will be useful, but
+//     WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+//     Lesser General Public License for more details.
+//
+//     You should have received a copy of the GNU Lesser General Public
+//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2018 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+using System.IO;
+using DiscImageChef.CommonTypes.Interfaces;
+using DiscImageChef.Console;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class DiscJuggler
+    {
+        public bool Identify(IFilter imageFilter)
+        {
+            imageStream = imageFilter.GetDataForkStream();
+
+            imageStream.Seek(-4, SeekOrigin.End);
+            byte[] dscLenB = new byte[4];
+            imageStream.Read(dscLenB, 0, 4);
+            int dscLen = BitConverter.ToInt32(dscLenB, 0);
+
+            DicConsole.DebugWriteLine("DiscJuggler plugin", "dscLen = {0}", dscLen);
+
+            if(dscLen >= imageStream.Length) return false;
+
+            byte[] descriptor = new byte[dscLen];
+            imageStream.Seek(-dscLen, SeekOrigin.End);
+            imageStream.Read(descriptor, 0, dscLen);
+
+            // Sessions
+            if(descriptor[0] > 99 || descriptor[0] == 0) return false;
+
+            // Seems all sessions start with this data
+            if(descriptor[1]  != 0x00 || descriptor[3]  != 0x00 || descriptor[4]  != 0x00 || descriptor[5]  != 0x00 ||
+               descriptor[6]  != 0x00 || descriptor[7]  != 0x00 || descriptor[8]  != 0x00 || descriptor[9]  != 0x00 ||
+               descriptor[10] != 0x01 || descriptor[11] != 0x00 || descriptor[12] != 0x00 || descriptor[13] != 0x00 ||
+               descriptor[14] != 0xFF || descriptor[15] != 0xFF) return false;
+
+            // Too many tracks
+            return descriptor[2] <= 99;
+        }
+
+    }
+}