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106 lines
4.2 KiB
C#
106 lines
4.2 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : DiskDupe.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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// Manages floppy disk images created with DiskDupe
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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 © 2021-2025 Michael Drüing
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// Copyright © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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/* Some information on the file format from Michal Necasek (www.os2museum.com):
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*
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* The DDI diskette image format was used by the DiskDupe DOS utility,
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* developed by Micro System Designs, Inc. of Cupertino, California in the
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* early 1990. DiskDupe was used to drive floppy autoloaders/duplicators
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* and disk image functionality was a fringe feature.
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*
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* All information about this format was obtained by analyzing available image
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* files and may not be entirely accurate.
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*
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* The DDI (DiskDupe Image) format is very simplistic, only supporting
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* standard PC floppy formats. It was not intended as a generic floppy disk
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* archival format.
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*
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* There is no compression and no checksums, but provisions are made to leave
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* out unused tracks. There is a track map at the beginning of the image.
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* The image header is the same size as a single track; the track map uses
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* this fact and gives the starting offset of each track in units of one
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* track's worth of data (e.g. 7.5KB for 1.2M images).
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*
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* There is a unique signature ('IM' followed by several zeroes), which means
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* that DDI files are easy to recognize.
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*/
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// ReSharper disable NotAccessedField.Local
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using Aaru.CommonTypes.Interfaces;
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using Aaru.CommonTypes.Structs;
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namespace Aaru.Images;
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/// <inheritdoc />
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/// <summary>Implements reading DiskDupe disk images</summary>
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public sealed partial class DiskDupe : IMediaImage
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{
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const string MODULE_NAME = "DiskDupe plugin";
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/// <summary>The ImageFilter we're reading from, after the file has been opened</summary>
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IFilter _ddiImageFilter;
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/// <summary>The DDI file header after the image has been opened</summary>
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FileHeader _fileHeader;
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ImageInfo _imageInfo;
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/// <summary>The track map for the image after it has been opened</summary>
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TrackInfo[] _trackMap;
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/// <summary>The track offsets in the image after the file has been opened</summary>
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long[] _trackOffsets;
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public DiskDupe() => _imageInfo = new ImageInfo
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{
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ReadableSectorTags = [],
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ReadableMediaTags = [],
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HasPartitions = false,
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HasSessions = false,
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Version = null,
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Application = null,
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ApplicationVersion = null,
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Creator = null,
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Comments = null,
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MediaManufacturer = null,
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MediaModel = null,
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MediaSerialNumber = null,
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MediaBarcode = null,
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MediaPartNumber = null,
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MediaSequence = 0,
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LastMediaSequence = 0,
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DriveManufacturer = null,
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DriveModel = null,
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DriveSerialNumber = null,
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DriveFirmwareRevision = null
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};
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} |