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254 lines
10 KiB
C#
254 lines
10 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : 0E.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 0Eh: CD-ROM audio control parameters 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 0x0E: CD-ROM audio control parameters page
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/// <summary>
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/// CD-ROM audio control parameters
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/// Page code 0x0E
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/// 16 bytes in SCSI-2, MMC-1, MMC-2, MMC-3
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/// </summary>
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public struct ModePage_0E
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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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/// Return status as soon as playback operation starts
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/// </summary>
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public bool Immed;
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/// <summary>
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/// Stop on track crossing
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/// </summary>
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public bool SOTC;
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/// <summary>
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/// Indicates <see cref="BlocksPerSecondOfAudio"/> is valid
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/// </summary>
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public bool APRVal;
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/// <summary>
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/// Multiplier for <see cref="BlocksPerSecondOfAudio"/>
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/// </summary>
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public byte LBAFormat;
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/// <summary>
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/// LBAs per second of audio
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/// </summary>
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public ushort BlocksPerSecondOfAudio;
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/// <summary>
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/// Channels output on this port
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/// </summary>
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public byte OutputPort0ChannelSelection;
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/// <summary>
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/// Volume level for this port
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/// </summary>
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public byte OutputPort0Volume;
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/// <summary>
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/// Channels output on this port
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/// </summary>
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public byte OutputPort1ChannelSelection;
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/// <summary>
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/// Volume level for this port
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/// </summary>
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public byte OutputPort1Volume;
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/// <summary>
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/// Channels output on this port
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/// </summary>
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public byte OutputPort2ChannelSelection;
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/// <summary>
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/// Volume level for this port
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/// </summary>
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public byte OutputPort2Volume;
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/// <summary>
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/// Channels output on this port
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/// </summary>
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public byte OutputPort3ChannelSelection;
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/// <summary>
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/// Volume level for this port
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/// </summary>
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public byte OutputPort3Volume;
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}
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public static ModePage_0E? DecodeModePage_0E(byte[] pageResponse)
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{
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if((pageResponse?[0] & 0x40) == 0x40) return null;
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if((pageResponse?[0] & 0x3F) != 0x0E) return null;
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if(pageResponse[1] + 2 != pageResponse.Length) return null;
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if(pageResponse.Length < 16) return null;
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ModePage_0E decoded = new ModePage_0E();
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decoded.PS |= (pageResponse[0] & 0x80) == 0x80;
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decoded.Immed |= (pageResponse[2] & 0x04) == 0x04;
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decoded.SOTC |= (pageResponse[2] & 0x02) == 0x02;
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decoded.APRVal |= (pageResponse[5] & 0x80) == 0x80;
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decoded.LBAFormat = (byte)(pageResponse[5] & 0x0F);
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decoded.BlocksPerSecondOfAudio = (ushort)((pageResponse[6] << 8) + pageResponse[7]);
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decoded.OutputPort0ChannelSelection = (byte)(pageResponse[8] & 0x0F);
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decoded.OutputPort0Volume = pageResponse[9];
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decoded.OutputPort1ChannelSelection = (byte)(pageResponse[10] & 0x0F);
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decoded.OutputPort1Volume = pageResponse[11];
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decoded.OutputPort2ChannelSelection = (byte)(pageResponse[12] & 0x0F);
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decoded.OutputPort2Volume = pageResponse[13];
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decoded.OutputPort3ChannelSelection = (byte)(pageResponse[14] & 0x0F);
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decoded.OutputPort3Volume = pageResponse[15];
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return decoded;
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}
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public static string PrettifyModePage_0E(byte[] pageResponse)
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{
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return PrettifyModePage_0E(DecodeModePage_0E(pageResponse));
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}
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public static string PrettifyModePage_0E(ModePage_0E? modePage)
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{
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if(!modePage.HasValue) return null;
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ModePage_0E page = modePage.Value;
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StringBuilder sb = new StringBuilder();
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sb.AppendLine("SCSI CD-ROM audio control parameters page:");
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if(page.PS) sb.AppendLine("\tParameters can be saved");
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if(page.Immed) sb.AppendLine("\tDrive will return from playback command immediately");
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else sb.AppendLine("\tDrive will return from playback command when playback ends");
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if(page.SOTC) sb.AppendLine("\tDrive will stop playback on track end");
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if(page.APRVal)
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{
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double blocks;
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if(page.LBAFormat == 8) blocks = page.BlocksPerSecondOfAudio * (1 / 256);
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else blocks = page.BlocksPerSecondOfAudio;
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sb.AppendFormat("\tThere are {0} blocks per each second of audio", blocks).AppendLine();
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}
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if(page.OutputPort0ChannelSelection > 0)
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{
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sb.Append("\tOutput port 0 has channels ");
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if((page.OutputPort0ChannelSelection & 0x01) == 0x01) sb.Append("0 ");
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if((page.OutputPort0ChannelSelection & 0x02) == 0x02) sb.Append("1 ");
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if((page.OutputPort0ChannelSelection & 0x04) == 0x04) sb.Append("2 ");
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if((page.OutputPort0ChannelSelection & 0x08) == 0x08) sb.Append("3 ");
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switch(page.OutputPort0Volume)
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{
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case 0:
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sb.AppendLine("muted");
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break;
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case 0xFF:
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sb.AppendLine("at maximum volume");
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break;
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default:
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sb.AppendFormat("at volume {0}", page.OutputPort0Volume).AppendLine();
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break;
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}
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}
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if(page.OutputPort1ChannelSelection > 0)
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{
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sb.Append("\tOutput port 1 has channels ");
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if((page.OutputPort1ChannelSelection & 0x01) == 0x01) sb.Append("0 ");
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if((page.OutputPort1ChannelSelection & 0x02) == 0x02) sb.Append("1 ");
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if((page.OutputPort1ChannelSelection & 0x04) == 0x04) sb.Append("2 ");
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if((page.OutputPort1ChannelSelection & 0x08) == 0x08) sb.Append("3 ");
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switch(page.OutputPort1Volume)
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{
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case 0:
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sb.AppendLine("muted");
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break;
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case 0xFF:
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sb.AppendLine("at maximum volume");
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break;
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default:
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sb.AppendFormat("at volume {0}", page.OutputPort1Volume).AppendLine();
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break;
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}
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}
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if(page.OutputPort2ChannelSelection > 0)
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{
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sb.Append("\tOutput port 2 has channels ");
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if((page.OutputPort2ChannelSelection & 0x01) == 0x01) sb.Append("0 ");
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if((page.OutputPort2ChannelSelection & 0x02) == 0x02) sb.Append("1 ");
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if((page.OutputPort2ChannelSelection & 0x04) == 0x04) sb.Append("2 ");
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if((page.OutputPort2ChannelSelection & 0x08) == 0x08) sb.Append("3 ");
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switch(page.OutputPort2Volume)
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{
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case 0:
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sb.AppendLine("muted");
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break;
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case 0xFF:
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sb.AppendLine("at maximum volume");
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break;
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default:
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sb.AppendFormat("at volume {0}", page.OutputPort2Volume).AppendLine();
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break;
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}
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}
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if(page.OutputPort3ChannelSelection <= 0) return sb.ToString();
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sb.Append("\tOutput port 3 has channels ");
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if((page.OutputPort3ChannelSelection & 0x01) == 0x01) sb.Append("0 ");
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if((page.OutputPort3ChannelSelection & 0x02) == 0x02) sb.Append("1 ");
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if((page.OutputPort3ChannelSelection & 0x04) == 0x04) sb.Append("2 ");
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if((page.OutputPort3ChannelSelection & 0x08) == 0x08) sb.Append("3 ");
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switch(page.OutputPort3Volume)
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{
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case 0:
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sb.AppendLine("muted");
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break;
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case 0xFF:
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sb.AppendLine("at maximum volume");
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break;
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default:
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sb.AppendFormat("at volume {0}", page.OutputPort3Volume).AppendLine();
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break;
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}
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return sb.ToString();
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}
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#endregion Mode Page 0x0E: CD-ROM audio control parameters page
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}
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} |