public static SecuritySector?Decode(byte[] response)
{
if (response == null)
{
return(null);
}
if (response.Length < 2048)
{
return(null);
}
var ss = new SecuritySector
{
DiskCategory = (DiskCategory)((response[0] & 0xF0) >> 4),
PartVersion = (byte)(response[0] & 0x0F),
DiscSize = (DVDSize)((response[1] & 0xF0) >> 4),
MaximumRate = (MaximumRateField)(response[1] & 0x0F),
Reserved3 = (response[2] & 0x80) == 0x80,
Layers = (byte)((response[2] & 0x60) >> 5),
TrackPath = (response[2] & 0x08) == 0x08,
LayerType = (LayerTypeFieldMask)(response[2] & 0x07),
LinearDensity = (LinearDensityField)((response[3] & 0xF0) >> 4),
TrackDensity = (TrackDensityField)(response[3] & 0x0F),
DataAreaStartPSN = (uint)((response[4] << 24) + (response[5] << 16) + (response[6] << 8) + response[7]),
DataAreaEndPSN = (uint)((response[8] << 24) + (response[9] << 16) + (response[10] << 8) + response[11]),
Layer0EndPSN = (uint)((response[12] << 24) + (response[13] << 16) + (response[14] << 8) + response[15]),
Unknown1 = response[27],
Unknown2 = new byte[28],
Unknown3 = new byte[436],
Unknown4 = new byte[4],
Unknown5 = new byte[43],
ChallengeTableVersion = response[768],
NoChallengeEntries = response[769],
ChallengeEntries = new ChallengeEntry[23],
Unknown6 = response[1023],
Unknown7 = new byte[48],
Unknown8 = new byte[16],
Unknown9 = new byte[16],
Unknown10 = new byte[303],
Unknown11 = new byte[104],
Extents = new SecuritySectorExtent[23],
ExtentsCopy = new SecuritySectorExtent[23]
};
Array.Copy(response, 256, ss.Unknown2, 0, 28);
Array.Copy(response, 284, ss.Unknown3, 0, 436);
Array.Copy(response, 720, ss.Unknown4, 0, 4);
Array.Copy(response, 724, ss.Unknown5, 0, 43);
for (int i = 0; i < 23; i++)
{
ss.ChallengeEntries[i] = new ChallengeEntry
{
Level = response[770 + (i * 11) + 0],
ChallengeId = response[770 + (i * 11) + 1],
ChallengeValue = (uint)((response[770 + (i * 11) + 2] << 24) +
(response[770 + (i * 11) + 3] << 16) + (response[770 + (i * 11) + 4] << 8) +
response[770 + (i * 11) + 5]),
ResponseModifier = response[770 + (i * 11) + 6],
ResponseValue = (uint)((response[770 + (i * 11) + 7] << 24) + (response[770 + (i * 11) + 8] << 16) +
(response[770 + (i * 11) + 9] << 8) + response[770 + (i * 11) + 10])
}
}
;
Array.Copy(response, 1052, ss.Unknown7, 0, 48);
Array.Copy(response, 1120, ss.Unknown8, 0, 16);
Array.Copy(response, 1180, ss.Unknown9, 0, 16);
Array.Copy(response, 1208, ss.Unknown10, 0, 303);
Array.Copy(response, 1528, ss.Unknown11, 0, 104);
for (int i = 0; i < 23; i++)
{
ss.Extents[i] = new SecuritySectorExtent
{
Unknown = (uint)((response[1633 + (i * 9) + 0] << 16) + (response[1633 + (i * 9) + 1] << 8) +
response[1633 + (i * 9) + 2]),
StartPSN = (uint)((response[1633 + (i * 9) + 3] << 16) + (response[1633 + (i * 9) + 4] << 8) +
response[1633 + (i * 9) + 5]),
EndPSN = (uint)((response[1633 + (i * 9) + 6] << 16) + (response[1633 + (i * 9) + 7] << 8) +
response[1633 + (i * 9) + 8])
}
}
;
for (int i = 0; i < 23; i++)
{
ss.ExtentsCopy[i] = new SecuritySectorExtent
{
Unknown = (uint)((response[1840 + (i * 9) + 0] << 16) + (response[1840 + (i * 9) + 1] << 8) +
response[1840 + (i * 9) + 2]),
StartPSN = (uint)((response[1840 + (i * 9) + 3] << 16) + (response[1840 + (i * 9) + 4] << 8) +
response[1840 + (i * 9) + 5]),
EndPSN = (uint)((response[1840 + (i * 9) + 6] << 16) + (response[1840 + (i * 9) + 7] << 8) +
response[1840 + (i * 9) + 8])
}
}
;
return(ss);
}
public static string Prettify(SecuritySector?ss)
{
if (ss == null)
{
return(null);
}
SecuritySector decoded = ss.Value;
var sb = new StringBuilder();
string sizeString;
switch (decoded.DiscSize)
{
case DVDSize.Eighty:
sizeString = "80mm";
break;
case DVDSize.OneTwenty:
sizeString = "120mm";
break;
default:
sizeString = $"unknown size identifier {decoded.DiscSize}";
break;
}
const string categorySentence = "Disc is a {0} {1} version {2}";
switch (decoded.DiskCategory)
{
case DiskCategory.DVDPRWDL:
sb.AppendFormat(categorySentence, sizeString, "Xbox Game Disc", decoded.PartVersion).AppendLine();
break;
case DiskCategory.DVDPRDL:
sb.AppendFormat(categorySentence, sizeString, "Xbox 360 Game Disc", decoded.PartVersion).
AppendLine();
break;
default:
sb.AppendFormat(categorySentence, sizeString, "unknown disc type", decoded.PartVersion).
AppendLine();
break;
}
switch (decoded.MaximumRate)
{
case MaximumRateField.TwoMbps:
sb.AppendLine("Disc maximum transfer rate is 2,52 Mbit/sec.");
break;
case MaximumRateField.FiveMbps:
sb.AppendLine("Disc maximum transfer rate is 5,04 Mbit/sec.");
break;
case MaximumRateField.TenMbps:
sb.AppendLine("Disc maximum transfer rate is 10,08 Mbit/sec.");
break;
case MaximumRateField.TwentyMbps:
sb.AppendLine("Disc maximum transfer rate is 20,16 Mbit/sec.");
break;
case MaximumRateField.ThirtyMbps:
sb.AppendLine("Disc maximum transfer rate is 30,24 Mbit/sec.");
break;
case MaximumRateField.Unspecified:
sb.AppendLine("Disc maximum transfer rate is unspecified.");
break;
default:
sb.AppendFormat("Disc maximum transfer rate is specified by unknown key {0}", decoded.MaximumRate).
AppendLine();
break;
}
sb.AppendFormat("Disc has {0} layers", decoded.Layers + 1).AppendLine();
if (decoded.TrackPath &&
decoded.Layers == 1)
{
sb.AppendLine("Layers are in parallel track path");
}
else if (!decoded.TrackPath &&
decoded.Layers == 1)
{
sb.AppendLine("Layers are in opposite track path");
}
switch (decoded.LinearDensity)
{
case LinearDensityField.TwoSix:
sb.AppendLine("Pitch size is 0,267 μm/bit");
break;
case LinearDensityField.TwoNine:
sb.AppendLine("Pitch size is 0,147 μm/bit");
break;
case LinearDensityField.FourZero:
sb.AppendLine("Pitch size is between 0,409 μm/bit and 0,435 μm/bit");
break;
case LinearDensityField.TwoEight:
sb.AppendLine("Pitch size is between 0,140 μm/bit and 0,148 μm/bit");
break;
case LinearDensityField.OneFive:
sb.AppendLine("Pitch size is 0,153 μm/bit");
break;
case LinearDensityField.OneThree:
sb.AppendLine("Pitch size is between 0,130 μm/bit and 0,140 μm/bit");
break;
case LinearDensityField.ThreeFive:
sb.AppendLine("Pitch size is 0,353 μm/bit");
break;
default:
sb.AppendFormat("Unknown pitch size key {0}", decoded.LinearDensity).AppendLine();
break;
}
switch (decoded.TrackDensity)
{
case TrackDensityField.Seven:
sb.AppendLine("Track size is 0,74 μm");
break;
case TrackDensityField.Eight:
sb.AppendLine("Track size is 0,80 μm");
break;
case TrackDensityField.Six:
sb.AppendLine("Track size is 0,615 μm");
break;
case TrackDensityField.Four:
sb.AppendLine("Track size is 0,40 μm");
break;
case TrackDensityField.Three:
sb.AppendLine("Track size is 0,34 μm");
break;
default:
sb.AppendFormat("Unknown track size key {0}", decoded.LinearDensity).AppendLine();
break;
}
if (decoded.DataAreaStartPSN > 0)
{
if (decoded.DataAreaEndPSN > 0)
{
sb.AppendFormat("Data area starts at PSN {0:X}h", decoded.DataAreaStartPSN).AppendLine();
sb.AppendFormat("Data area ends at PSN {0:X}h", decoded.DataAreaEndPSN).AppendLine();
if (decoded.Layers == 1 &&
!decoded.TrackPath)
{
sb.AppendFormat("Layer 0 ends at PSN {0:X}h", decoded.Layer0EndPSN).AppendLine();
}
}
else
{
sb.AppendLine("Disc is empty");
}
}
else
{
sb.AppendLine("Disc is empty");
}
sb.AppendLine("Challenges:");
foreach (ChallengeEntry entry in decoded.ChallengeEntries)
{
sb.AppendFormat("\tChallenge ID: {0}", entry.ChallengeId).AppendLine();
sb.AppendFormat("\tChallenge level: {0}", entry.Level).AppendLine();
sb.AppendFormat("\tChallenge value: 0x{0:X8}", entry.ChallengeValue).AppendLine();
sb.AppendFormat("\tResponse modifier: {0}", entry.ResponseModifier).AppendLine();
sb.AppendFormat("\tResponse value: 0x{0:X8}", entry.ResponseValue).AppendLine();
}
for (int i = 0; i < 16; i++)
{
sb.AppendFormat("Extent starts at PSN {0:X6}h and ends at PSN {1:X6}h", decoded.Extents[i].StartPSN,
decoded.Extents[i].EndPSN).AppendLine();
}
return(sb.ToString());
}
