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105 lines
4.2 KiB
C#
105 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 : CHD.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disc image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Manages MAME Compressed Hunks of Data 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 © 2011-2021 Natalia Portillo
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// ****************************************************************************/
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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using Aaru.CommonTypes;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.CommonTypes.Structs;
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using Aaru.Decoders.CD;
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namespace Aaru.DiscImages
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{
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// TODO: Implement PCMCIA support
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/// <summary>Implements reading MAME CHD disk images</summary>
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[SuppressMessage("ReSharper", "NotAccessedField.Local")]
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public sealed partial class Chd : IOpticalMediaImage, IVerifiableImage
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{
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/// <summary>"MComprHD"</summary>
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readonly byte[] _chdTag =
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{
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0x4D, 0x43, 0x6F, 0x6D, 0x70, 0x72, 0x48, 0x44
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};
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SectorBuilder _sectorBuilder;
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uint _bytesPerHunk;
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byte[] _cis;
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byte[] _expectedChecksum;
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uint _hdrCompression;
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uint _hdrCompression1;
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uint _hdrCompression2;
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uint _hdrCompression3;
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Dictionary<ulong, byte[]> _hunkCache;
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byte[] _hunkMap;
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ulong[] _hunkTable;
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uint[] _hunkTableSmall;
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byte[] _identify;
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ImageInfo _imageInfo;
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Stream _imageStream;
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bool _isCdrom;
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bool _isGdrom;
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bool _isHdd;
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uint _mapVersion;
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int _maxBlockCache;
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int _maxSectorCache;
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Dictionary<ulong, uint> _offsetmap;
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List<Partition> _partitions;
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Dictionary<ulong, byte[]> _sectorCache;
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uint _sectorsPerHunk;
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bool _swapAudio;
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uint _totalHunks;
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Dictionary<uint, Track> _tracks;
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public Chd() => _imageInfo = new ImageInfo
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{
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ReadableSectorTags = new List<SectorTagType>(),
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ReadableMediaTags = new List<MediaTagType>(),
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HasPartitions = false,
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HasSessions = false,
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Application = "MAME",
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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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}
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} |