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294 lines
13 KiB
C#
294 lines
13 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : CompactDisc.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Core algorithms.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Dumps CDs and DDCDs.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2019 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Structs;
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using DiscImageChef.Decoders.CD;
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// ReSharper disable JoinDeclarationAndInitializer
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// ReSharper disable InlineOutVariableDeclaration
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// ReSharper disable TooWideLocalVariableScope
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namespace DiscImageChef.Core.Devices.Dumping
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{
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partial class Dump
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{
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/// <summary>Reads the TOC, processes it, returns the track list and last sector</summary>
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/// <param name="blockSize">Size of the read sector in bytes</param>
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/// <param name="dskType">Disc type</param>
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/// <param name="lastSector">Last sector number</param>
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/// <param name="leadOutStarts">Lead-out starts</param>
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/// <param name="mediaTags">Media tags</param>
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/// <param name="toc">Full CD TOC</param>
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/// <param name="trackFlags">Track flags</param>
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/// <param name="subType">Track subchannel type</param>
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/// <returns>List of tracks</returns>
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Track[] GetCdTracks(ref uint blockSize, MediaType dskType, out long lastSector,
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Dictionary<int, long> leadOutStarts, Dictionary<MediaTagType, byte[]> mediaTags,
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out FullTOC.CDFullTOC? toc, Dictionary<byte, byte> trackFlags, TrackSubchannelType subType)
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{
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byte[] cmdBuf = null; // Data buffer
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const uint sectorSize = 2352; // Full sector size
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bool sense = true; // Sense indicator
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List<Track> trackList = new List<Track>(); // Tracks in disc
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byte[] tmpBuf; // Temporary buffer
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toc = null;
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lastSector = 0;
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TrackType leadoutTrackType = TrackType.Audio;
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// We discarded all discs that falsify a TOC before requesting a real TOC
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// No TOC, no CD (or an empty one)
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_dumpLog.WriteLine("Reading full TOC");
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UpdateStatus?.Invoke("Reading full TOC");
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sense = _dev.ReadRawToc(out cmdBuf, out _, 0, _dev.Timeout, out _);
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if(!sense)
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{
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toc = FullTOC.Decode(cmdBuf);
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if(toc.HasValue)
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{
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tmpBuf = new byte[cmdBuf.Length - 2];
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Array.Copy(cmdBuf, 2, tmpBuf, 0, cmdBuf.Length - 2);
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mediaTags.Add(MediaTagType.CD_FullTOC, tmpBuf);
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}
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}
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UpdateStatus?.Invoke("Building track map...");
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_dumpLog.WriteLine("Building track map...");
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if(toc.HasValue)
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{
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FullTOC.TrackDataDescriptor[] sortedTracks =
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toc.Value.TrackDescriptors.OrderBy(track => track.POINT).ToArray();
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foreach(FullTOC.TrackDataDescriptor trk in sortedTracks.Where(trk => trk.ADR == 1 || trk.ADR == 4))
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if(trk.POINT >= 0x01 &&
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trk.POINT <= 0x63)
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{
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trackList.Add(new Track
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{
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TrackSequence = trk.POINT, TrackSession = trk.SessionNumber,
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TrackType = (TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrack ||
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(TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrackIncremental
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? TrackType.Data : TrackType.Audio,
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TrackStartSector =
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(ulong)(((trk.PHOUR * 3600 * 75) + (trk.PMIN * 60 * 75) + (trk.PSEC * 75) +
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trk.PFRAME) - 150),
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TrackBytesPerSector = (int)sectorSize,
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TrackRawBytesPerSector = (int)sectorSize,
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TrackSubchannelType = subType
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});
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trackFlags.Add(trk.POINT, trk.CONTROL);
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}
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else if(trk.POINT == 0xA2)
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{
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int phour, pmin, psec, pframe;
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if(trk.PFRAME == 0)
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{
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pframe = 74;
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if(trk.PSEC == 0)
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{
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psec = 59;
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if(trk.PMIN == 0)
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{
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pmin = 59;
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phour = trk.PHOUR - 1;
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}
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else
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{
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pmin = trk.PMIN - 1;
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phour = trk.PHOUR;
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}
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}
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else
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{
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psec = trk.PSEC - 1;
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pmin = trk.PMIN;
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phour = trk.PHOUR;
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}
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}
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else
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{
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pframe = trk.PFRAME - 1;
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psec = trk.PSEC;
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pmin = trk.PMIN;
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phour = trk.PHOUR;
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}
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lastSector = ((phour * 3600 * 75) + (pmin * 60 * 75) + (psec * 75) + pframe) - 150;
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leadOutStarts.Add(trk.SessionNumber, lastSector + 1);
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}
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else if(trk.POINT == 0xA0 &&
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trk.ADR == 1)
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{
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switch(trk.PSEC)
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{
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case 0x10:
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dskType = MediaType.CDI;
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break;
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case 0x20:
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if(dskType == MediaType.CD ||
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dskType == MediaType.CDROM)
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dskType = MediaType.CDROMXA;
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break;
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}
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leadoutTrackType =
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(TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrack ||
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(TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrackIncremental ? TrackType.Data
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: TrackType.Audio;
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}
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}
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else
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{
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UpdateStatus?.Invoke("Cannot read RAW TOC, requesting processed one...");
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_dumpLog.WriteLine("Cannot read RAW TOC, requesting processed one...");
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sense = _dev.ReadToc(out cmdBuf, out _, false, 0, _dev.Timeout, out _);
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TOC.CDTOC? oldToc = TOC.Decode(cmdBuf);
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if((sense || !oldToc.HasValue) &&
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!_force)
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{
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_dumpLog.WriteLine("Could not read TOC, if you want to continue, use force, and will try from LBA 0 to 360000...");
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StoppingErrorMessage?.
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Invoke("Could not read TOC, if you want to continue, use force, and will try from LBA 0 to 360000...");
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return null;
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}
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foreach(TOC.CDTOCTrackDataDescriptor trk in oldToc.
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Value.TrackDescriptors.OrderBy(t => t.TrackNumber).
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Where(trk => trk.ADR == 1 || trk.ADR == 4))
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if(trk.TrackNumber >= 0x01 &&
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trk.TrackNumber <= 0x63)
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{
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trackList.Add(new Track
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{
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TrackSequence = trk.TrackNumber, TrackSession = 1,
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TrackType = (TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrack ||
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(TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrackIncremental
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? TrackType.Data : TrackType.Audio,
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TrackStartSector = trk.TrackStartAddress, TrackBytesPerSector = (int)sectorSize,
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TrackRawBytesPerSector = (int)sectorSize, TrackSubchannelType = subType
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});
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trackFlags.Add(trk.TrackNumber, trk.CONTROL);
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}
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else if(trk.TrackNumber == 0xAA)
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{
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leadoutTrackType =
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(TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrack ||
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(TocControl)(trk.CONTROL & 0x0D) == TocControl.DataTrackIncremental ? TrackType.Data
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: TrackType.Audio;
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lastSector = trk.TrackStartAddress - 1;
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}
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}
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if(trackList.Count == 0)
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{
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UpdateStatus?.Invoke("No tracks found, adding a single track from 0 to Lead-Out");
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_dumpLog.WriteLine("No tracks found, adding a single track from 0 to Lead-Out");
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trackList.Add(new Track
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{
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TrackSequence = 1, TrackSession = 1, TrackType = leadoutTrackType,
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TrackStartSector = 0,
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TrackBytesPerSector = (int)sectorSize, TrackRawBytesPerSector = (int)sectorSize,
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TrackSubchannelType = subType
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});
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trackFlags.Add(1, (byte)(leadoutTrackType == TrackType.Audio ? 0 : 4));
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}
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if(lastSector == 0)
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{
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sense = _dev.ReadCapacity16(out cmdBuf, out _, _dev.Timeout, out _);
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if(!sense)
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{
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byte[] temp = new byte[8];
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Array.Copy(cmdBuf, 0, temp, 0, 8);
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Array.Reverse(temp);
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lastSector = (long)BitConverter.ToUInt64(temp, 0);
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blockSize = (uint)((cmdBuf[5] << 24) + (cmdBuf[5] << 16) + (cmdBuf[6] << 8) + cmdBuf[7]);
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}
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else
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{
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sense = _dev.ReadCapacity(out cmdBuf, out _, _dev.Timeout, out _);
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if(!sense)
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{
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lastSector = (cmdBuf[0] << 24) + (cmdBuf[1] << 16) + (cmdBuf[2] << 8) + cmdBuf[3];
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blockSize = (uint)((cmdBuf[5] << 24) + (cmdBuf[5] << 16) + (cmdBuf[6] << 8) + cmdBuf[7]);
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}
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}
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if(lastSector <= 0)
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{
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if(!_force)
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{
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StoppingErrorMessage?.
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Invoke("Could not find Lead-Out, if you want to continue use force option and will continue until 360000 sectors...");
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_dumpLog.
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WriteLine("Could not find Lead-Out, if you want to continue use force option and will continue until 360000 sectors...");
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return null;
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}
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UpdateStatus?.
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Invoke("WARNING: Could not find Lead-Out start, will try to read up to 360000 sectors, probably will fail before...");
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_dumpLog.WriteLine("WARNING: Could not find Lead-Out start, will try to read up to 360000 sectors, probably will fail before...");
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lastSector = 360000;
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}
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}
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return trackList.ToArray();
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}
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}
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} |