mirror of
https://github.com/aaru-dps/Aaru.git
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411 lines
17 KiB
C#
411 lines
17 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Data.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : CompactDisc dumping.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Dumps user data part.
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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 © 2011-2022 Natalia Portillo
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// ****************************************************************************/
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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 Aaru.Core.Devices.Dumping;
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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 Aaru.CommonTypes.Extents;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.CommonTypes.Structs;
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using Aaru.Core.Logging;
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using Aaru.Decoders.CD;
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using Aaru.Devices;
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using Schemas;
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partial class Dump
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{
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/// <summary>Detects if a sector contains data</summary>
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/// <param name="sector">Sector contents</param>
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/// <returns><c>true</c> if it contains Yellow Book data, <c>false</c> otherwise</returns>
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static bool IsData(byte[] sector)
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{
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if(sector?.Length != 2352)
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return false;
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byte[] syncMark =
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{
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0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00
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};
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var testMark = new byte[12];
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Array.Copy(sector, 0, testMark, 0, 12);
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return syncMark.SequenceEqual(testMark) && (sector[0xF] == 0 || sector[0xF] == 1 || sector[0xF] == 2);
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}
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/// <summary>Detects if a sector contains scrambled data</summary>
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/// <param name="sector">Sector contents</param>
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/// <param name="wantedLba">What LBA we intended to read</param>
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/// <param name="offset">Offset in bytes, if found</param>
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/// <returns><c>true</c> if it contains Yellow Book data, <c>false</c> otherwise</returns>
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static bool IsScrambledData(byte[] sector, int wantedLba, out int? offset)
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{
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offset = 0;
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if(sector?.Length != 2352)
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return false;
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byte[] syncMark =
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{
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0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00
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};
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var testMark = new byte[12];
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for(var i = 0; i <= 2336; i++)
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{
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Array.Copy(sector, i, testMark, 0, 12);
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if(!syncMark.SequenceEqual(testMark) ||
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sector[i + 0xF] != 0x60 && sector[i + 0xF] != 0x61 && sector[i + 0xF] != 0x62)
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continue;
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// De-scramble M and S
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int minute = sector[i + 12] ^ 0x01;
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int second = sector[i + 13] ^ 0x80;
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int frame = sector[i + 14];
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// Convert to binary
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minute = minute / 16 * 10 + (minute & 0x0F);
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second = second / 16 * 10 + (second & 0x0F);
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frame = frame / 16 * 10 + (frame & 0x0F);
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// Calculate the first found LBA
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int lba = minute * 60 * 75 + second * 75 + frame - 150;
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// Calculate the difference between the found LBA and the requested one
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int diff = wantedLba - lba;
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offset = i + 2352 * diff;
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return true;
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}
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return false;
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}
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// TODO: Set pregap for Track 1
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// TODO: Detect errors in sectors
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/// <summary>Reads all the hidden track in CD-i Ready discs</summary>
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/// <param name="blocks">Total number of positive sectors</param>
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/// <param name="blockSize">Size of the read sector in bytes</param>
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/// <param name="currentSpeed">Current read speed</param>
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/// <param name="currentTry">Current dump hardware try</param>
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/// <param name="extents">Extents</param>
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/// <param name="ibgLog">IMGBurn log</param>
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/// <param name="imageWriteDuration">Duration of image write</param>
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/// <param name="leadOutExtents">Lead-out extents</param>
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/// <param name="maxSpeed">Maximum speed</param>
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/// <param name="mhddLog">MHDD log</param>
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/// <param name="minSpeed">Minimum speed</param>
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/// <param name="offsetBytes">Read offset</param>
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/// <param name="sectorsForOffset">Sectors needed to fix offset</param>
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/// <param name="subSize">Subchannel size in bytes</param>
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/// <param name="supportedSubchannel">Drive's maximum supported subchannel</param>
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/// <param name="totalDuration">Total commands duration</param>
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/// <param name="cdiReadyReadAsAudio">Is the drive returning CD-i Ready hidden track as audio?</param>
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/// <param name="tracks">Disc tracks</param>
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/// <param name="subLog">Subchannel log</param>
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/// <param name="desiredSubchannel">Subchannel desired to save</param>
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/// <param name="isrcs">List of disc ISRCs</param>
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/// <param name="mcn">Disc media catalogue number</param>
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/// <param name="subchannelExtents">List of subchannels not yet dumped correctly</param>
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/// <param name="smallestPregapLbaPerTrack">List of smallest pregap relative address per track</param>
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void ReadCdiReady(uint blockSize, ref double currentSpeed, DumpHardwareType currentTry, ExtentsULong extents,
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IbgLog ibgLog, ref double imageWriteDuration, ExtentsULong leadOutExtents, ref double maxSpeed,
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MhddLog mhddLog, ref double minSpeed, uint subSize, MmcSubchannel supportedSubchannel,
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ref double totalDuration, Track[] tracks, SubchannelLog subLog, MmcSubchannel desiredSubchannel,
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Dictionary<byte, string> isrcs, ref string mcn, HashSet<int> subchannelExtents, ulong blocks,
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bool cdiReadyReadAsAudio, int offsetBytes, int sectorsForOffset,
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Dictionary<byte, int> smallestPregapLbaPerTrack)
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{
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ulong sectorSpeedStart = 0; // Used to calculate correct speed
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DateTime timeSpeedStart = DateTime.UtcNow; // Time of start for speed calculation
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bool sense; // Sense indicator
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byte[] cmdBuf; // Data buffer
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byte[] senseBuf; // Sense buffer
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double cmdDuration; // Command execution time
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const uint sectorSize = 2352; // Full sector size
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Track firstTrack = tracks.FirstOrDefault(t => t.Sequence == 1);
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uint blocksToRead; // How many sectors to read at once
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var outputOptical = _outputPlugin as IWritableOpticalImage;
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if(firstTrack is null)
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return;
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if(cdiReadyReadAsAudio)
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{
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_dumpLog.WriteLine("Setting speed to 8x for CD-i Ready reading as audio.");
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UpdateStatus?.Invoke("Setting speed to 8x for CD-i Ready reading as audio.");
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_dev.SetCdSpeed(out _, RotationalControl.ClvAndImpureCav, 1416, 0, _dev.Timeout, out _);
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}
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InitProgress?.Invoke();
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for(ulong i = _resume.NextBlock; i < firstTrack.StartSector; i += blocksToRead)
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{
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if(_aborted)
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{
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currentTry.Extents = ExtentsConverter.ToMetadata(extents);
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UpdateStatus?.Invoke("Aborted!");
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_dumpLog.WriteLine("Aborted!");
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break;
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}
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var firstSectorToRead = (uint)i;
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blocksToRead = _maximumReadable;
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if(blocksToRead == 1 && cdiReadyReadAsAudio)
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blocksToRead += (uint)sectorsForOffset;
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if(cdiReadyReadAsAudio)
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if(offsetBytes < 0)
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{
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if(i == 0)
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firstSectorToRead = uint.MaxValue - (uint)(sectorsForOffset - 1); // -1
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else
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firstSectorToRead -= (uint)sectorsForOffset;
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}
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if(currentSpeed > maxSpeed &&
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currentSpeed > 0)
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maxSpeed = currentSpeed;
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if(currentSpeed < minSpeed &&
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currentSpeed > 0)
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minSpeed = currentSpeed;
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UpdateProgress?.Invoke($"Reading sector {i} of {blocks} ({currentSpeed:F3} MiB/sec.)", (long)i,
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(long)blocks);
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sense = _dev.ReadCd(out cmdBuf, out senseBuf, firstSectorToRead, blockSize, blocksToRead,
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MmcSectorTypes.AllTypes, false, false, true, MmcHeaderCodes.AllHeaders, true, true,
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MmcErrorField.None, supportedSubchannel, _dev.Timeout, out cmdDuration);
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totalDuration += cmdDuration;
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double elapsed;
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// Overcome the track mode change drive error
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if(sense)
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for(uint r = 0; r < _maximumReadable; r++)
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{
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UpdateProgress?.Invoke($"Reading sector {i + r} of {blocks} ({currentSpeed:F3} MiB/sec.)",
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(long)i + r, (long)blocks);
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sense = _dev.ReadCd(out cmdBuf, out senseBuf, (uint)(i + r), blockSize, (uint)sectorsForOffset + 1,
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MmcSectorTypes.AllTypes, false, false, true, MmcHeaderCodes.AllHeaders, true,
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true, MmcErrorField.None, supportedSubchannel, _dev.Timeout, out cmdDuration);
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totalDuration += cmdDuration;
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if(!sense &&
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!_dev.Error)
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{
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mhddLog.Write(i + r, cmdDuration);
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ibgLog.Write(i + r, currentSpeed * 1024);
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extents.Add(i + r, 1, true);
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DateTime writeStart = DateTime.Now;
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if(cdiReadyReadAsAudio)
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FixOffsetData(offsetBytes, sectorSize, sectorsForOffset, supportedSubchannel,
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ref blocksToRead, subSize, ref cmdBuf, blockSize, false);
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if(supportedSubchannel != MmcSubchannel.None)
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{
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var data = new byte[sectorSize];
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var sub = new byte[subSize];
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Array.Copy(cmdBuf, 0, data, 0, sectorSize);
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Array.Copy(cmdBuf, sectorSize, sub, 0, subSize);
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if(cdiReadyReadAsAudio)
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data = Sector.Scramble(data);
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outputOptical.WriteSectorsLong(data, i + r, 1);
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bool indexesChanged = Media.CompactDisc.WriteSubchannelToImage(supportedSubchannel,
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desiredSubchannel, sub, i + r, 1, subLog, isrcs, 1, ref mcn, tracks,
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subchannelExtents, _fixSubchannelPosition, outputOptical, _fixSubchannel,
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_fixSubchannelCrc, _dumpLog, UpdateStatus, smallestPregapLbaPerTrack, true);
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// Set tracks and go back
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if(indexesChanged)
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{
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outputOptical.SetTracks(tracks.ToList());
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i -= _maximumReadable;
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continue;
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}
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}
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else
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outputOptical.WriteSectorsLong(cmdBuf, i + r, 1);
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imageWriteDuration += (DateTime.Now - writeStart).TotalSeconds;
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}
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else
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{
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_errorLog?.WriteLine(i + r, _dev.Error, _dev.LastError, senseBuf);
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leadOutExtents.Add(i + r, firstTrack.StartSector - 1);
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UpdateStatus?.
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Invoke($"Adding CD-i Ready hole from LBA {i + r} to {firstTrack.StartSector - 1} inclusive.");
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_dumpLog.WriteLine("Adding CD-i Ready hole from LBA {0} to {1} inclusive.", i + r,
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firstTrack.StartSector - 1);
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break;
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}
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sectorSpeedStart += r;
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_resume.NextBlock = i + r;
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elapsed = (DateTime.UtcNow - timeSpeedStart).TotalSeconds;
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if(elapsed <= 0)
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continue;
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currentSpeed = sectorSpeedStart * blockSize / (1048576 * elapsed);
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sectorSpeedStart = 0;
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timeSpeedStart = DateTime.UtcNow;
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}
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if(!sense &&
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!_dev.Error)
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{
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if(cdiReadyReadAsAudio)
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FixOffsetData(offsetBytes, sectorSize, sectorsForOffset, supportedSubchannel, ref blocksToRead,
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subSize, ref cmdBuf, blockSize, false);
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mhddLog.Write(i, cmdDuration);
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ibgLog.Write(i, currentSpeed * 1024);
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extents.Add(i, blocksToRead, true);
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DateTime writeStart = DateTime.Now;
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if(supportedSubchannel != MmcSubchannel.None)
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{
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var data = new byte[sectorSize * blocksToRead];
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var sub = new byte[subSize * blocksToRead];
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var tmpData = new byte[sectorSize];
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for(var b = 0; b < blocksToRead; b++)
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{
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if(cdiReadyReadAsAudio)
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{
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Array.Copy(cmdBuf, (int)(0 + b * blockSize), tmpData, 0, sectorSize);
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tmpData = Sector.Scramble(tmpData);
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Array.Copy(tmpData, 0, data, sectorSize * b, sectorSize);
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}
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else
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Array.Copy(cmdBuf, (int)(0 + b * blockSize), data, sectorSize * b, sectorSize);
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Array.Copy(cmdBuf, (int)(sectorSize + b * blockSize), sub, subSize * b, subSize);
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}
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outputOptical.WriteSectorsLong(data, i, blocksToRead);
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bool indexesChanged = Media.CompactDisc.WriteSubchannelToImage(supportedSubchannel,
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desiredSubchannel, sub, i, blocksToRead, subLog, isrcs, 1, ref mcn, tracks,
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subchannelExtents, _fixSubchannelPosition, outputOptical, _fixSubchannel,
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_fixSubchannelCrc, _dumpLog, UpdateStatus, smallestPregapLbaPerTrack, true);
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// Set tracks and go back
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if(indexesChanged)
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{
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outputOptical.SetTracks(tracks.ToList());
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i -= blocksToRead;
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continue;
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}
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}
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else
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{
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if(cdiReadyReadAsAudio)
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{
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var tmpData = new byte[sectorSize];
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var data = new byte[sectorSize * blocksToRead];
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for(var b = 0; b < blocksToRead; b++)
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{
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Array.Copy(cmdBuf, (int)(b * sectorSize), tmpData, 0, sectorSize);
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tmpData = Sector.Scramble(tmpData);
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Array.Copy(tmpData, 0, data, sectorSize * b, sectorSize);
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}
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outputOptical.WriteSectorsLong(data, i, blocksToRead);
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}
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else
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outputOptical.WriteSectorsLong(cmdBuf, i, blocksToRead);
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}
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imageWriteDuration += (DateTime.Now - writeStart).TotalSeconds;
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}
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else
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{
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_errorLog?.WriteLine(i, _dev.Error, _dev.LastError, senseBuf);
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_resume.NextBlock = firstTrack.StartSector;
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break;
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}
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sectorSpeedStart += blocksToRead;
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_resume.NextBlock = i + blocksToRead;
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elapsed = (DateTime.UtcNow - timeSpeedStart).TotalSeconds;
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if(elapsed <= 0)
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continue;
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currentSpeed = sectorSpeedStart * blockSize / (1048576 * elapsed);
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sectorSpeedStart = 0;
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timeSpeedStart = DateTime.UtcNow;
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}
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EndProgress?.Invoke();
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}
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} |