Aaru/Aaru.Images/Alcohol120/Helpers.cs

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename       : Helpers.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Disc image plugins.
//
// --[ Description ] ----------------------------------------------------------
//
//     Contains helpers for Alcohol 120% 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 © 2011-2023 Natalia Portillo
// ****************************************************************************/

using Aaru.CommonTypes;
using Aaru.CommonTypes.Enums;

namespace Aaru.Images;

public sealed partial class Alcohol120
{
    static ushort TrackModeToCookedBytesPerSector(TrackMode trackMode)
    {
        switch(trackMode)
        {
            case TrackMode.Mode1:
            case TrackMode.Mode1Alt:
            case TrackMode.Mode2F1:
            case TrackMode.Mode2F1Alt:
                return 2048;
            case TrackMode.Mode2F2:
            case TrackMode.Mode2F2Alt:
                return 2324;
            case TrackMode.Mode2:
                return 2336;
            case TrackMode.Audio:
            case TrackMode.AudioAlt:
                return 2352;
            case TrackMode.DVD:
                return 2048;
            default:
                return 0;
        }
    }

    static TrackType TrackModeToTrackType(TrackMode trackType)
    {
        switch(trackType)
        {
            case TrackMode.Mode1:
            case TrackMode.Mode1Alt:
                return TrackType.CdMode1;
            case TrackMode.Mode2F1:
            case TrackMode.Mode2F1Alt:
                return TrackType.CdMode2Form1;
            case TrackMode.Mode2F2:
            case TrackMode.Mode2F2Alt:
                return TrackType.CdMode2Form2;
            case TrackMode.Mode2:
                return TrackType.CdMode2Formless;
            case TrackMode.Audio:
            case TrackMode.AudioAlt:
                return TrackType.Audio;
            default:
                return TrackType.Data;
        }
    }

    static MediaType MediumTypeToMediaType(MediumType discType) => discType switch
                                                                   {
                                                                       MediumType.CD   => MediaType.CD,
                                                                       MediumType.CDR  => MediaType.CDR,
                                                                       MediumType.CDRW => MediaType.CDRW,
                                                                       MediumType.DVD  => MediaType.DVDROM,
                                                                       MediumType.DVDR => MediaType.DVDR,
                                                                       _               => MediaType.Unknown
                                                                   };

    static MediumType MediaTypeToMediumType(MediaType type)
    {
        switch(type)
        {
            case MediaType.CD:
            case MediaType.CDDA:
            case MediaType.CDEG:
            case MediaType.CDG:
            case MediaType.CDI:
            case MediaType.CDMIDI:
            case MediaType.CDPLUS:
            case MediaType.CDROM:
            case MediaType.CDROMXA:
            case MediaType.CDV:
            case MediaType.DTSCD:
            case MediaType.JaguarCD:
            case MediaType.MEGACD:
            case MediaType.PS1CD:
            case MediaType.PS2CD:
            case MediaType.SuperCDROM2:
            case MediaType.SVCD:
            case MediaType.SATURNCD:
            case MediaType.ThreeDO:
            case MediaType.VCD:
            case MediaType.VCDHD:
            case MediaType.NeoGeoCD:
            case MediaType.PCFX:
            case MediaType.CDTV:
            case MediaType.CD32:
            case MediaType.Nuon:
            case MediaType.Playdia:
            case MediaType.Pippin:
            case MediaType.FMTOWNS:
            case MediaType.MilCD:
            case MediaType.VideoNow:
            case MediaType.VideoNowColor:
            case MediaType.VideoNowXp:
            case MediaType.CVD:
                return MediumType.CD;
            case MediaType.CDR:
                return MediumType.CDR;
            case MediaType.CDRW:
            case MediaType.CDMRW:
                return MediumType.CDRW;
            case MediaType.DVDR:
            case MediaType.DVDRW:
            case MediaType.DVDPR:
            case MediaType.DVDRDL:
            case MediaType.DVDRWDL:
            case MediaType.DVDPRDL:
            case MediaType.DVDPRWDL:
                return MediumType.DVDR;
            default:
                return MediumType.DVD;
        }
    }

    static TrackMode TrackTypeToTrackMode(TrackType type) => type switch
                                                             {
                                                                 TrackType.Audio           => TrackMode.Audio,
                                                                 TrackType.CdMode1         => TrackMode.Mode1,
                                                                 TrackType.CdMode2Formless => TrackMode.Mode2,
                                                                 TrackType.CdMode2Form1    => TrackMode.Mode2F1,
                                                                 TrackType.CdMode2Form2    => TrackMode.Mode2F2,
                                                                 _                         => TrackMode.DVD
                                                             };

    static (byte minute, byte second, byte frame) LbaToMsf(ulong sector) =>
        ((byte)((sector + 150) / 75 / 60), (byte)((sector + 150) / 75 % 60), (byte)((sector + 150) % 75));
}