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Added decoding Lead-In CMI for DVD.

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Natalia Portillo
2015-12-01 04:23:08 +00:00
parent 053dbdc79d
commit 06f00c93f9
4 changed files with 100 additions and 1 deletions
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5
DiscImageChef.Decoders/ChangeLog
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@@ -1,3 +1,8 @@
2015-12-01 Natalia Portillo <claunia@claunia.com>
* DVD/CSS&CPRM.cs:
Added decoding Lead-In CMI for DVD.
2015-12-01 Natalia Portillo <claunia@claunia.com> 2015-12-01 Natalia Portillo <claunia@claunia.com>
* Blu-ray/DI.cs: * Blu-ray/DI.cs:

83
DiscImageChef.Decoders/DVD/CSS&CPRM.cs
View File

@@ -36,6 +36,7 @@
// ****************************************************************************/ // ****************************************************************************/
// //$Id$ // //$Id$
using System; using System;
using System.Text;
namespace DiscImageChef.Decoders.DVD namespace DiscImageChef.Decoders.DVD
{ {
@@ -119,6 +120,88 @@ namespace DiscImageChef.Decoders.DVD
/// </summary> /// </summary>
public byte[] Key; public byte[] Key;
} }
public static LeadInCopyright? DecodeLeadInCopyright(byte[] response)
{
if(response == null)
return null;
if (response.Length != 8)
return null;
LeadInCopyright cmi = new LeadInCopyright();
cmi.DataLength = (ushort)((response[0] << 8) + response[1]);
cmi.Reserved1 = response[2];
cmi.Reserved2 = response[3];
cmi.CopyrightType = response[4];
cmi.RegionInformation = response[5];
cmi.Reserved3 = response[6];
cmi.Reserved4 = response[7];
}
public static string PrettifyLeadInCopyright(LeadInCopyright? cmi)
{
if (cmi == null)
return null;
LeadInCopyright decoded = cmi.Value;
StringBuilder sb = new StringBuilder();
switch (decoded.CopyrightType)
{
case 0x00:
sb.AppendLine("Disc has no encryption.");
break;
case 0x01:
sb.AppendLine("Disc is encrypted using CSS or CPPM.");
break;
case 0x02:
sb.AppendLine("Disc is encrypted using CPRM.");
break;
case 0x10:
sb.AppendLine("Disc is encrypted using AACS.");
break;
default:
sb.AppendFormat("Disc is encrypted using unknown algorithm with ID {0}.", decoded.CopyrightType);
break;
}
if (decoded.CopyrightType == 0)
return sb.ToString();
if (decoded.RegionInformation == 0xFF)
sb.AppendLine("Disc cannot be played in any region at all.");
else if (decoded.RegionInformation == 0x00)
sb.AppendLine("Disc can be played in any region.");
else
{
sb.Append("Disc can be played in the following regions:");
if ((decoded.RegionInformation & 0x01) != 0x01)
sb.Append(" 0");
if ((decoded.RegionInformation & 0x02) != 0x02)
sb.Append(" 1");
if ((decoded.RegionInformation & 0x04) != 0x04)
sb.Append(" 2");
if ((decoded.RegionInformation & 0x08) != 0x08)
sb.Append(" 3");
if ((decoded.RegionInformation & 0x10) != 0x10)
sb.Append(" 4");
if ((decoded.RegionInformation & 0x20) != 0x20)
sb.Append(" 5");
if ((decoded.RegionInformation & 0x40) != 0x40)
sb.Append(" 6");
if ((decoded.RegionInformation & 0x80) != 0x80)
sb.Append(" 7");
}
return sb.ToString();
}
public static string PrettifyLeadInCopyright(byte[] response)
{
return PrettifyLeadInCopyright(DecodeLeadInCopyright(response));
}
} }
} }

5
DiscImageChef/ChangeLog
View File

@@ -1,3 +1,8 @@
2015-12-01 Natalia Portillo <claunia@claunia.com>
* Commands/MediaInfo.cs:
Added decoding Lead-In CMI for DVD.
2015-12-01 Natalia Portillo <claunia@claunia.com> 2015-12-01 Natalia Portillo <claunia@claunia.com>
* Commands/MediaInfo.cs: * Commands/MediaInfo.cs:

6
DiscImageChef/Commands/MediaInfo.cs
View File

@@ -324,7 +324,10 @@ namespace DiscImageChef.Commands
if(sense) if(sense)
DicConsole.ErrorWriteLine("READ DISC STRUCTURE: CMI\n{0}", Decoders.SCSI.Sense.PrettifySense(senseBuf)); DicConsole.ErrorWriteLine("READ DISC STRUCTURE: CMI\n{0}", Decoders.SCSI.Sense.PrettifySense(senseBuf));
else else
{
doWriteFile(outputPrefix, "_readdiscstructure_dvd_cmi.bin", "SCSI READ DISC STRUCTURE", cmdBuf); doWriteFile(outputPrefix, "_readdiscstructure_dvd_cmi.bin", "SCSI READ DISC STRUCTURE", cmdBuf);
DicConsole.WriteLine("Lead-In CMI:\n{0}", Decoders.DVD.CSS_CPRM.PrettifyLeadInCopyright(cmdBuf));
}
} }
#endregion DVD-ROM #endregion DVD-ROM
@@ -807,7 +810,10 @@ namespace DiscImageChef.Commands
if(sense) if(sense)
DicConsole.ErrorWriteLine("READ DISC STRUCTURE: CMI\n{0}", Decoders.SCSI.Sense.PrettifySense(senseBuf)); DicConsole.ErrorWriteLine("READ DISC STRUCTURE: CMI\n{0}", Decoders.SCSI.Sense.PrettifySense(senseBuf));
else else
{
doWriteFile(outputPrefix, "_readdiscstructure_dvd_cmi.bin", "SCSI READ DISC STRUCTURE", cmdBuf); doWriteFile(outputPrefix, "_readdiscstructure_dvd_cmi.bin", "SCSI READ DISC STRUCTURE", cmdBuf);
DicConsole.WriteLine("Lead-In CMI:\n{0}", Decoders.DVD.CSS_CPRM.PrettifyLeadInCopyright(cmdBuf));
}
sense = dev.ReadDiscStructure(out cmdBuf, out senseBuf, MmcDiscStructureMediaType.DVD, 0, 0, MmcDiscStructureFormat.BurstCuttingArea, 0, dev.Timeout, out duration); sense = dev.ReadDiscStructure(out cmdBuf, out senseBuf, MmcDiscStructureMediaType.DVD, 0, 0, MmcDiscStructureFormat.BurstCuttingArea, 0, dev.Timeout, out duration);
if(sense) if(sense)
DicConsole.ErrorWriteLine("READ DISC STRUCTURE: BCA\n{0}", Decoders.SCSI.Sense.PrettifySense(senseBuf)); DicConsole.ErrorWriteLine("READ DISC STRUCTURE: BCA\n{0}", Decoders.SCSI.Sense.PrettifySense(senseBuf));