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284 lines
12 KiB
C#
284 lines
12 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Read.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Reads KryoFlux STREAM images.
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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 © 2011-2018 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.Globalization;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Interfaces;
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using DiscImageChef.Console;
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using DiscImageChef.Filters;
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namespace DiscImageChef.DiscImages
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{
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public partial class KryoFlux
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{
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public bool Open(IFilter imageFilter)
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{
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OobBlock header = new OobBlock();
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Stream stream = imageFilter.GetDataForkStream();
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stream.Seek(0, SeekOrigin.Begin);
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if(stream.Length < Marshal.SizeOf(header)) return false;
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byte[] hdr = new byte[Marshal.SizeOf(header)];
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stream.Read(hdr, 0, Marshal.SizeOf(header));
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IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(header));
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Marshal.Copy(hdr, 0, hdrPtr, Marshal.SizeOf(header));
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header = (OobBlock)Marshal.PtrToStructure(hdrPtr, typeof(OobBlock));
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Marshal.FreeHGlobal(hdrPtr);
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OobBlock footer = new OobBlock();
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stream.Seek(-Marshal.SizeOf(footer), SeekOrigin.End);
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hdr = new byte[Marshal.SizeOf(footer)];
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stream.Read(hdr, 0, Marshal.SizeOf(footer));
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hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(footer));
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Marshal.Copy(hdr, 0, hdrPtr, Marshal.SizeOf(footer));
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footer = (OobBlock)Marshal.PtrToStructure(hdrPtr, typeof(OobBlock));
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Marshal.FreeHGlobal(hdrPtr);
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if(header.blockId != BlockIds.Oob || header.blockType != OobTypes.KFInfo ||
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footer.blockId != BlockIds.Oob || footer.blockType != OobTypes.EOF ||
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footer.length != 0x0D0D) return false;
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// TODO: This is supposing NoFilter, shouldn't
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tracks = new SortedDictionary<byte, IFilter>();
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byte step = 1;
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byte heads = 2;
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bool topHead = false;
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string basename = Path.Combine(imageFilter.GetParentFolder(),
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imageFilter.GetFilename()
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.Substring(0, imageFilter.GetFilename().Length - 8));
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for(byte t = 0; t < 166; t += step)
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{
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int cylinder = t / heads;
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int head = topHead ? 1 : t % heads;
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string trackfile = Directory.Exists(basename)
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? Path.Combine(basename, $"{cylinder:D2}.{head:D1}.raw")
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: $"{basename}{cylinder:D2}.{head:D1}.raw";
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if(!File.Exists(trackfile))
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if(cylinder == 0)
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{
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if(head == 0)
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{
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DicConsole.DebugWriteLine("KryoFlux plugin",
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"Cannot find cyl 0 hd 0, supposing only top head was dumped");
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topHead = true;
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heads = 1;
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continue;
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}
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DicConsole.DebugWriteLine("KryoFlux plugin",
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"Cannot find cyl 0 hd 1, supposing only bottom head was dumped");
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heads = 1;
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continue;
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}
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else if(cylinder == 1)
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{
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DicConsole.DebugWriteLine("KryoFlux plugin", "Cannot find cyl 1, supposing double stepping");
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step = 2;
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continue;
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}
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else
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{
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DicConsole.DebugWriteLine("KryoFlux plugin", "Arrived end of disk at cylinder {0}", cylinder);
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break;
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}
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ZZZNoFilter trackFilter = new ZZZNoFilter();
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trackFilter.Open(trackfile);
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if(!trackFilter.IsOpened()) throw new IOException("Could not open KryoFlux track file.");
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imageInfo.CreationTime = DateTime.MaxValue;
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imageInfo.LastModificationTime = DateTime.MinValue;
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Stream trackStream = trackFilter.GetDataForkStream();
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while(trackStream.Position < trackStream.Length)
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{
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byte blockId = (byte)trackStream.ReadByte();
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switch(blockId)
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{
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case (byte)BlockIds.Oob:
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{
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trackStream.Position--;
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OobBlock oobBlk = new OobBlock();
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byte[] oob = new byte[Marshal.SizeOf(oobBlk)];
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trackStream.Read(oob, 0, Marshal.SizeOf(oobBlk));
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IntPtr oobPtr = Marshal.AllocHGlobal(Marshal.SizeOf(oobBlk));
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Marshal.Copy(oob, 0, oobPtr, Marshal.SizeOf(oobBlk));
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oobBlk = (OobBlock)Marshal.PtrToStructure(oobPtr, typeof(OobBlock));
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Marshal.FreeHGlobal(oobPtr);
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if(oobBlk.blockType == OobTypes.EOF)
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{
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trackStream.Position = trackStream.Length;
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break;
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}
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if(oobBlk.blockType != OobTypes.KFInfo)
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{
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trackStream.Position += oobBlk.length;
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break;
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}
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byte[] kfinfo = new byte[oobBlk.length];
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trackStream.Read(kfinfo, 0, oobBlk.length);
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string kfinfoStr = StringHandlers.CToString(kfinfo);
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string[] lines = kfinfoStr.Split(new[] {','}, StringSplitOptions.RemoveEmptyEntries);
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DateTime blockDate = DateTime.Now;
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DateTime blockTime = DateTime.Now;
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bool foundDate = false;
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foreach(string[] kvp in lines.Select(line => line.Split('=')).Where(kvp => kvp.Length == 2))
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{
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kvp[0] = kvp[0].Trim();
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kvp[1] = kvp[1].Trim();
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DicConsole.DebugWriteLine("KryoFlux plugin", "\"{0}\" = \"{1}\"", kvp[0], kvp[1]);
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switch(kvp[0])
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{
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case hostDate:
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if(DateTime.TryParseExact(kvp[1], "yyyy.MM.dd", CultureInfo.InvariantCulture,
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DateTimeStyles.AssumeLocal, out blockDate))
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foundDate = true;
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break;
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case hostTime:
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DateTime.TryParseExact(kvp[1], "HH:mm:ss", CultureInfo.InvariantCulture,
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DateTimeStyles.AssumeLocal, out blockTime);
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break;
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case kfName:
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imageInfo.Application = kvp[1];
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break;
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case kfVersion:
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imageInfo.ApplicationVersion = kvp[1];
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break;
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}
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}
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if(foundDate)
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{
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DateTime blockTimestamp = new DateTime(blockDate.Year, blockDate.Month, blockDate.Day,
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blockTime.Hour, blockTime.Minute,
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blockTime.Second);
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DicConsole.DebugWriteLine("KryoFlux plugin", "Found timestamp: {0}", blockTimestamp);
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if(blockTimestamp < Info.CreationTime) imageInfo.CreationTime = blockTimestamp;
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if(blockTimestamp > Info.LastModificationTime)
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imageInfo.LastModificationTime = blockTimestamp;
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}
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break;
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}
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case (byte)BlockIds.Flux2:
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case (byte)BlockIds.Flux2_1:
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case (byte)BlockIds.Flux2_2:
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case (byte)BlockIds.Flux2_3:
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case (byte)BlockIds.Flux2_4:
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case (byte)BlockIds.Flux2_5:
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case (byte)BlockIds.Flux2_6:
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case (byte)BlockIds.Flux2_7:
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case (byte)BlockIds.Nop2:
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trackStream.Position++;
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continue;
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case (byte)BlockIds.Nop3:
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case (byte)BlockIds.Flux3:
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trackStream.Position += 2;
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continue;
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default: continue;
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}
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}
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tracks.Add(t, trackFilter);
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}
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imageInfo.Heads = heads;
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imageInfo.Cylinders = (uint)(tracks.Count / heads);
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public byte[] ReadDiskTag(MediaTagType tag)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public byte[] ReadSector(ulong sectorAddress)
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{
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return ReadSectors(sectorAddress, 1);
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}
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public byte[] ReadSectorTag(ulong sectorAddress, SectorTagType tag)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public byte[] ReadSectors(ulong sectorAddress, uint length)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public byte[] ReadSectorsTag(ulong sectorAddress, uint length, SectorTagType tag)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public byte[] ReadSectorLong(ulong sectorAddress)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public byte[] ReadSectorsLong(ulong sectorAddress, uint length)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public bool? VerifySector(ulong sectorAddress)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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public bool? VerifySectors(ulong sectorAddress, uint length, out List<ulong> failingLbas,
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out List<ulong> unknownLbas)
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{
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throw new NotImplementedException("Flux decoding is not yet implemented.");
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}
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}
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} |