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80 lines
3.0 KiB
C#
80 lines
3.0 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Structs.cs
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// Author(s) : Michael Drüing <michael@drueing.de>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains structures for DiskDupe DDI disk images.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2021 Michael Drüing
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// Copyright © 2011-2021 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.Runtime.InteropServices;
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namespace Aaru.DiscImages
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{
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[SuppressMessage("ReSharper", "UnusedType.Local")]
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public sealed partial class DiskDupe
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{
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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struct DiskType {
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public byte cyl;
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public byte hd;
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public byte spt;
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}
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readonly DiskType[] _diskTypes = {
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new DiskType { cyl = 0, hd = 0, spt = 0 }, // Type 0 - invalid
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new DiskType { cyl = 40, hd = 2, spt = 9 }, // Type 1 - 360k
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new DiskType { cyl = 80, hd = 2, spt = 15 }, // Type 2 - 1.2m
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new DiskType { cyl = 80, hd = 2, spt = 9 }, // Type 3 - 720k
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new DiskType { cyl = 80, hd = 2, spt = 18 } // Type 4 - 1.44m
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};
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct TrackInfo {
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public byte present; // 1 = present, 0 = absent
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public byte trackNumber;
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public byte zero1;
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public byte zero2;
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public byte zero3;
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public byte unknown; // always 1?
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}
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/// <summary>The global header of a DDI image file</summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct FileHeader
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{
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/// <summary>The file signature</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
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public byte[] signature;
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/// <summary>Disk type</summary>
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public byte diskType;
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}
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}
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}
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