Aaru/Aaru.Images/BlindWrite5/Structs.cs

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : Structs.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Disk image plugins.
//
// --[ Description ] ----------------------------------------------------------
//
//     Contains structures for BlindWrite 5 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 © 2011-2021 Natalia Portillo
// ****************************************************************************/

using System.Runtime.InteropServices;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.Decoders.SCSI.MMC;

namespace Aaru.DiscImages
{
    public sealed partial class BlindWrite5
    {
        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        readonly struct Header
        {
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public readonly byte[] signature;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
            public readonly uint[] unknown1;
            public readonly ProfileNumber profile;
            public readonly ushort        sessions;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
            public readonly uint[] unknown2;
            [MarshalAs(UnmanagedType.U1, SizeConst = 3)]
            public readonly bool mcnIsValid;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 13)]
            public readonly byte[] mcn;
            public readonly ushort unknown3;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public readonly uint[] unknown4;
            public readonly ushort pmaLen;
            public readonly ushort atipLen;
            public readonly ushort cdtLen;
            public readonly ushort cdInfoLen;
            public readonly uint   bcaLen;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
            public readonly uint[] unknown5;
            public readonly uint dvdStrLen;
            public readonly uint dvdInfoLen;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
            public readonly byte[] unknown6;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
            public readonly byte[] manufacturer;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
            public readonly byte[] product;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public readonly byte[] revision;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
            public readonly byte[] vendor;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
            public readonly byte[] volumeId;
            public readonly uint mode2ALen;
            public readonly uint unkBlkLen;
            public readonly uint dataLen;
            public readonly uint sessionsLen;
            public readonly uint dpmLen;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        struct DataFile
        {
            public uint Type;
            public uint Length;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
            public uint[] Unknown1;
            public uint Offset;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
            public uint[] Unknown2;
            public int    StartLba;
            public int    Sectors;
            public uint   FilenameLen;
            public byte[] FilenameBytes;
            public uint   Unknown3;

            public string Filename;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        readonly struct TrackDescriptor
        {
            public readonly TrackType type;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
            public readonly byte[] unknown1;
            public readonly uint            unknown2;
            public readonly TrackSubchannel subchannel;
            public readonly byte            unknown3;
            public readonly byte            ctl;
            public readonly byte            adr;
            public readonly byte            point;
            public readonly byte            tno;
            public readonly byte            min;
            public readonly byte            sec;
            public readonly byte            frame;
            public readonly byte            zero;
            public readonly byte            pmin;
            public readonly byte            psec;
            public readonly byte            pframe;
            public readonly byte            unknown5;
            public readonly uint            pregap;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
            public readonly uint[] unknown6;
            public readonly int startLba;
            public readonly int sectors;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
            public readonly uint[] unknown7;
            public readonly uint   session;
            public readonly ushort unknown8;

            // Seems to be only on non DVD track descriptors
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
            public readonly uint[] unknown9;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        struct SessionDescriptor
        {
            public ushort            Sequence;
            public byte              Entries;
            public byte              Unknown;
            public int               Start;
            public int               End;
            public ushort            FirstTrack;
            public ushort            LastTrack;
            public TrackDescriptor[] Tracks;
        }

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        struct DataFileCharacteristics
        {
            public IFilter             FileFilter;
            public string              FilePath;
            public TrackSubchannelType Subchannel;
            public long                SectorSize;
            public int                 StartLba;
            public int                 Sectors;
            public uint                Offset;
        }
    }
}