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REFACTOR: Separate SCSI MODE decoders.
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163
DiscImageChef.Decoders/SCSI/Modes/0D.cs
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163
DiscImageChef.Decoders/SCSI/Modes/0D.cs
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// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : 0D.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 SCSI MODE PAGE 0Dh: CD-ROM parameteres page.
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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.Text;
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namespace DiscImageChef.Decoders.SCSI
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{
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public static partial class Modes
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{
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#region Mode Page 0x0D: CD-ROM parameteres page
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/// <summary>
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/// CD-ROM parameteres page
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/// Page code 0x0D
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/// 8 bytes in SCSI-2, MMC-1, MMC-2, MMC-3
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/// </summary>
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public struct ModePage_0D
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{
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/// <summary>
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/// Parameters can be saved
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/// </summary>
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public bool PS;
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/// <summary>
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/// Time the drive shall remain in hold track state after seek or read
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/// </summary>
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public byte InactivityTimerMultiplier;
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/// <summary>
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/// Seconds per Minute
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/// </summary>
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public ushort SecondsPerMinute;
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/// <summary>
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/// Frames per Second
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/// </summary>
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public ushort FramesPerSecond;
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}
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public static ModePage_0D? DecodeModePage_0D(byte[] pageResponse)
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{
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if(pageResponse == null) return null;
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if((pageResponse[0] & 0x40) == 0x40) return null;
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if((pageResponse[0] & 0x3F) != 0x0D) return null;
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if(pageResponse[1] + 2 != pageResponse.Length) return null;
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if(pageResponse.Length < 8) return null;
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ModePage_0D decoded = new ModePage_0D();
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decoded.PS |= (pageResponse[0] & 0x80) == 0x80;
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decoded.InactivityTimerMultiplier = (byte)(pageResponse[3] & 0xF);
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decoded.SecondsPerMinute = (ushort)((pageResponse[4] << 8) + pageResponse[5]);
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decoded.FramesPerSecond = (ushort)((pageResponse[6] << 8) + pageResponse[7]);
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return decoded;
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}
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public static string PrettifyModePage_0D(byte[] pageResponse)
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{
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return PrettifyModePage_0D(DecodeModePage_0D(pageResponse));
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}
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public static string PrettifyModePage_0D(ModePage_0D? modePage)
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{
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if(!modePage.HasValue) return null;
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ModePage_0D page = modePage.Value;
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StringBuilder sb = new StringBuilder();
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sb.AppendLine("SCSI CD-ROM parameters page:");
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if(page.PS) sb.AppendLine("\tParameters can be saved");
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switch(page.InactivityTimerMultiplier)
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{
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case 0:
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sb.AppendLine("\tDrive will remain in track hold state a vendor-specified time after a seek or read");
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break;
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case 1:
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sb.AppendLine("\tDrive will remain in track hold state 125 ms after a seek or read");
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break;
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case 2:
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sb.AppendLine("\tDrive will remain in track hold state 250 ms after a seek or read");
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break;
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case 3:
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sb.AppendLine("\tDrive will remain in track hold state 500 ms after a seek or read");
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break;
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case 4:
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sb.AppendLine("\tDrive will remain in track hold state 1 second after a seek or read");
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break;
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case 5:
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sb.AppendLine("\tDrive will remain in track hold state 2 seconds after a seek or read");
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break;
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case 6:
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sb.AppendLine("\tDrive will remain in track hold state 4 seconds after a seek or read");
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break;
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case 7:
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sb.AppendLine("\tDrive will remain in track hold state 8 seconds after a seek or read");
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break;
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case 8:
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sb.AppendLine("\tDrive will remain in track hold state 16 seconds after a seek or read");
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break;
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case 9:
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sb.AppendLine("\tDrive will remain in track hold state 32 seconds after a seek or read");
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break;
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case 10:
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sb.AppendLine("\tDrive will remain in track hold state 1 minute after a seek or read");
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break;
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case 11:
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sb.AppendLine("\tDrive will remain in track hold state 2 minutes after a seek or read");
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break;
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case 12:
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sb.AppendLine("\tDrive will remain in track hold state 4 minutes after a seek or read");
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break;
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case 13:
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sb.AppendLine("\tDrive will remain in track hold state 8 minutes after a seek or read");
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break;
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case 14:
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sb.AppendLine("\tDrive will remain in track hold state 16 minutes after a seek or read");
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break;
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case 15:
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sb.AppendLine("\tDrive will remain in track hold state 32 minutes after a seek or read");
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break;
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}
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if(page.SecondsPerMinute > 0)
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sb.AppendFormat("\tEach minute has {0} seconds", page.SecondsPerMinute).AppendLine();
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if(page.FramesPerSecond > 0)
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sb.AppendFormat("\tEach second has {0} frames", page.FramesPerSecond).AppendLine();
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return sb.ToString();
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}
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#endregion Mode Page 0x0D: CD-ROM parameteres page
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}
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}
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