mirror of
https://github.com/aaru-dps/Aaru.git
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Natalia Portillo
2a52c3075d
Introduces constant fields for respective debug module names, replacing the hardcoded ones. This is done to standardize the naming convention, reduce redundancy and potentially avoid any typos or name mismatches across the project. This change makes the code more maintainable and easier to update in case module names need to be changed.
224 lines
9.0 KiB
C#
224 lines
9.0 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Session.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Device structures decoders.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Decodes CD session structures.
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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 © 2011-2023 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.Text;
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using Aaru.Console;
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using Aaru.Helpers;
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namespace Aaru.Decoders.CD;
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// Information from the following standards:
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// ANSI X3.304-1997
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// T10/1048-D revision 9.0
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// T10/1048-D revision 10a
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// T10/1228-D revision 7.0c
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// T10/1228-D revision 11a
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// T10/1363-D revision 10g
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// T10/1545-D revision 1d
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// T10/1545-D revision 5
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// T10/1545-D revision 5a
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// T10/1675-D revision 2c
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// T10/1675-D revision 4 T10/1836-D revision 2g
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[SuppressMessage("ReSharper", "InconsistentNaming"), SuppressMessage("ReSharper", "MemberCanBeInternal"),
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SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
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public static class Session
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{
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const string MODULE_NAME = "CD Session Info decoder";
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public static CDSessionInfo? Decode(byte[] CDSessionInfoResponse)
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{
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if(CDSessionInfoResponse is not { Length: > 4 })
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return null;
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var decoded = new CDSessionInfo
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{
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DataLength = BigEndianBitConverter.ToUInt16(CDSessionInfoResponse, 0),
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FirstCompleteSession = CDSessionInfoResponse[2],
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LastCompleteSession = CDSessionInfoResponse[3]
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};
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decoded.TrackDescriptors = new TrackDataDescriptor[(decoded.DataLength - 2) / 8];
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if(decoded.DataLength + 2 != CDSessionInfoResponse.Length)
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{
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AaruConsole.DebugWriteLine(MODULE_NAME,
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Localization.
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Expected_CDSessionInfo_size_0_bytes_is_not_received_size_1_bytes_not_decoding,
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decoded.DataLength + 2, CDSessionInfoResponse.Length);
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return null;
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}
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for(int i = 0; i < (decoded.DataLength - 2) / 8; i++)
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{
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decoded.TrackDescriptors[i].Reserved1 = CDSessionInfoResponse[0 + (i * 8) + 4];
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decoded.TrackDescriptors[i].ADR = (byte)((CDSessionInfoResponse[1 + (i * 8) + 4] & 0xF0) >> 4);
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decoded.TrackDescriptors[i].CONTROL = (byte)(CDSessionInfoResponse[1 + (i * 8) + 4] & 0x0F);
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decoded.TrackDescriptors[i].TrackNumber = CDSessionInfoResponse[2 + (i * 8) + 4];
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decoded.TrackDescriptors[i].Reserved2 = CDSessionInfoResponse[3 + (i * 8) + 4];
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decoded.TrackDescriptors[i].TrackStartAddress =
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BigEndianBitConverter.ToUInt32(CDSessionInfoResponse, 4 + (i * 8) + 4);
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}
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return decoded;
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}
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public static string Prettify(CDSessionInfo? CDSessionInfoResponse)
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{
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if(CDSessionInfoResponse == null)
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return null;
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CDSessionInfo response = CDSessionInfoResponse.Value;
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var sb = new StringBuilder();
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sb.AppendFormat(Localization.First_complete_session_number_0, response.FirstCompleteSession).AppendLine();
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sb.AppendFormat(Localization.Last_complete_session_number_0, response.LastCompleteSession).AppendLine();
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foreach(TrackDataDescriptor descriptor in response.TrackDescriptors)
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{
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sb.AppendFormat(Localization.First_track_number_in_last_complete_session_0, descriptor.TrackNumber).
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AppendLine();
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sb.AppendFormat(Localization.Track_starts_at_LBA_0_or_MSF_2_3, descriptor.TrackStartAddress,
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(descriptor.TrackStartAddress & 0x0000FF00) >> 8,
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(descriptor.TrackStartAddress & 0x00FF0000) >> 16,
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(descriptor.TrackStartAddress & 0xFF000000) >> 24).AppendLine();
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switch((TocAdr)descriptor.ADR)
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{
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case TocAdr.NoInformation:
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sb.AppendLine(Localization.Q_subchannel_mode_not_given);
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break;
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case TocAdr.CurrentPosition:
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sb.AppendLine(Localization.Q_subchannel_stores_current_position);
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break;
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case TocAdr.ISRC:
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sb.AppendLine(Localization.Q_subchannel_stores_ISRC);
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break;
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case TocAdr.MediaCatalogNumber:
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sb.AppendLine(Localization.Q_subchannel_stores_media_catalog_number);
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break;
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}
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if((descriptor.CONTROL & (byte)TocControl.ReservedMask) == (byte)TocControl.ReservedMask)
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sb.AppendFormat(Localization.Reserved_flags_0_set, descriptor.CONTROL).AppendLine();
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else
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{
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switch((TocControl)(descriptor.CONTROL & 0x0D))
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{
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case TocControl.TwoChanNoPreEmph:
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sb.AppendLine(Localization.Stereo_audio_track_with_no_pre_emphasis);
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break;
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case TocControl.TwoChanPreEmph:
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sb.AppendLine(Localization.Stereo_audio_track_with_50_15_us_pre_emphasis);
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break;
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case TocControl.FourChanNoPreEmph:
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sb.AppendLine(Localization.Quadraphonic_audio_track_with_no_pre_emphasis);
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break;
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case TocControl.FourChanPreEmph:
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sb.AppendLine(Localization.Stereo_audio_track_with_50_15_us_pre_emphasis);
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break;
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case TocControl.DataTrack:
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sb.AppendLine(Localization.Data_track_recorded_uninterrupted);
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break;
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case TocControl.DataTrackIncremental:
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sb.AppendLine(Localization.Data_track_recorded_incrementally);
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break;
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}
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sb.AppendLine((descriptor.CONTROL & (byte)TocControl.CopyPermissionMask) ==
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(byte)TocControl.CopyPermissionMask ? Localization.Digital_copy_of_track_is_permitted
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: Localization.Digital_copy_of_track_is_prohibited);
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#if DEBUG
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if(descriptor.Reserved1 != 0)
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sb.AppendFormat(Localization.Reserved1_equals_0_X8, descriptor.Reserved1).AppendLine();
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if(descriptor.Reserved2 != 0)
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sb.AppendFormat(Localization.Reserved2_equals_0_X8, descriptor.Reserved2).AppendLine();
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#endif
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sb.AppendLine();
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}
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}
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return sb.ToString();
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}
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public static string Prettify(byte[] CDSessionInfoResponse)
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{
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CDSessionInfo? decoded = Decode(CDSessionInfoResponse);
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return Prettify(decoded);
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}
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public struct CDSessionInfo
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{
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/// <summary>Total size of returned session information minus this field</summary>
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public ushort DataLength;
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/// <summary>First track number in hex</summary>
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public byte FirstCompleteSession;
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/// <summary>Last track number in hex</summary>
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public byte LastCompleteSession;
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/// <summary>Track descriptors</summary>
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public TrackDataDescriptor[] TrackDescriptors;
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}
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public struct TrackDataDescriptor
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{
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/// <summary>Byte 0 Reserved</summary>
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public byte Reserved1;
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/// <summary>Byte 1, bits 7 to 4 Type of information in Q subchannel of block where this TOC entry was found</summary>
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public byte ADR;
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/// <summary>Byte 1, bits 3 to 0 Track attributes</summary>
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public byte CONTROL;
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/// <summary>Byte 2 First track number in last complete session</summary>
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public byte TrackNumber;
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/// <summary>Byte 3 Reserved</summary>
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public byte Reserved2;
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/// <summary>Bytes 4 to 7 First track number in last complete session start address in LBA or in MSF</summary>
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public uint TrackStartAddress;
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}
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} |