Refactor image classes and split them to smaller files.

DiscImageChef.DiscImages/QCOW2/Structs.cs

@@ -0,0 +1,106 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Structs.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Contains structures for QEMU Copy-On-Write v2 disk 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.Runtime.InteropServices;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class Qcow2
+    {
+        /// <summary>
+        ///     QCOW header, big-endian
+        /// </summary>
+        [StructLayout(LayoutKind.Sequential, Pack = 1)]
+        struct QCow2Header
+        {
+            /// <summary>
+            ///     <see cref="Qcow2.QCOW_MAGIC" />
+            /// </summary>
+            public uint magic;
+            /// <summary>
+            ///     Must be 1
+            /// </summary>
+            public uint version;
+            /// <summary>
+            ///     Offset inside file to string containing backing file
+            /// </summary>
+            public ulong backing_file_offset;
+            /// <summary>
+            ///     Size of <see cref="backing_file_offset" />
+            /// </summary>
+            public uint backing_file_size;
+            /// <summary>
+            ///     Cluster bits
+            /// </summary>
+            public uint cluster_bits;
+            /// <summary>
+            ///     Size in bytes
+            /// </summary>
+            public ulong size;
+            /// <summary>
+            ///     Encryption method
+            /// </summary>
+            public uint crypt_method;
+            /// <summary>
+            ///     Size of L1 table
+            /// </summary>
+            public uint l1_size;
+            /// <summary>
+            ///     Offset to L1 table
+            /// </summary>
+            public ulong l1_table_offset;
+            /// <summary>
+            ///     Offset to reference count table
+            /// </summary>
+            public ulong refcount_table_offset;
+            /// <summary>
+            ///     How many clusters does the refcount table span
+            /// </summary>
+            public uint refcount_table_clusters;
+            /// <summary>
+            ///     Number of snapshots
+            /// </summary>
+            public uint nb_snapshots;
+            /// <summary>
+            ///     Offset to QCowSnapshotHeader
+            /// </summary>
+            public ulong snapshots_offset;
+
+            // Added in version 3
+            public ulong features;
+            public ulong compat_features;
+            public ulong autoclear_features;
+            public uint  refcount_order;
+            public uint  header_length;
+        }
+    }
+}