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Add decoder for MMC Track Information.

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This commit is contained in:
Natalia Portillo
2020-06-16 20:03:30 +01:00
parent 02fa1a1b0f
commit 97e4a6ead9
3 changed files with 82 additions and 0 deletions
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1
Aaru.Decoders.csproj
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@@ -83,6 +83,7 @@
<Compile Include="SCSI\MMC\CPRM.cs" />
<Compile Include="SCSI\MMC\Enums.cs" />
<Compile Include="SCSI\MMC\Hybrid.cs" />
<Compile Include="SCSI\MMC\TrackInformation.cs" />
<Compile Include="SCSI\MMC\WriteProtect.cs" />
<Compile Include="SCSI\MMC\DiscInformation.cs" />
<Compile Include="SCSI\Modes\00_SFF.cs" />

6
SCSI/MMC/Enums.cs
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@@ -68,4 +68,10 @@ namespace Aaru.Decoders.SCSI.MMC
/// <summary>Also valid for CD-DA, DVD and BD</summary>
CDROM = 0x00, CDi = 0x10, CDROMXA = 0x20, Undefined = 0xFF
}
public enum LayerJumpRecordingStatus : byte
{
Incremental = 0, Unspecified = 1, Manual = 2,
RegularInterval = 3
}
}

75
SCSI/MMC/TrackInformation.cs Normal file
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@@ -0,0 +1,75 @@
namespace Aaru.Decoders.SCSI.MMC
{
public class TrackInformation
{
public bool Blank;
public bool Copy;
public bool Damage;
public ushort DataLength;
public byte DataMode;
public uint FixedPacketSize;
public bool FP;
public uint FreeBlocks;
public uint LastLayerJumpAddress;
public uint LastRecordedAddress;
public LayerJumpRecordingStatus LayerJumpRecordingStatus;
public ushort LogicalTrackNumber;
public uint LogicalTrackSize;
public uint LogicalTrackStartAddress;
public bool LraV;
public uint NextLayerJumpAddress;
public uint NextWritableAddress;
public bool NwaV;
public bool Packet;
public uint ReadCompatibilityLba;
public bool RT;
public ushort SessionNumber;
public byte TrackMode;
public static TrackInformation Decode(byte[] response)
{
if(response.Length < 32)
return null;
var decoded = new TrackInformation
{
DataLength = (ushort)((response[0] << 8) + response[1]), LogicalTrackNumber = response[2],
SessionNumber = response[3], LayerJumpRecordingStatus = (LayerJumpRecordingStatus)(response[5] >> 6),
Damage = (response[5] & 0x20) == 0x20, Copy = (response[5] & 0x10) == 0x10,
TrackMode = (byte)(response[5] & 0xF), RT = (response[6] & 0x80) == 0x80,
Blank = (response[6] & 0x40) == 0x40, Packet = (response[6] & 0x20) == 0x20,
FP = (response[6] & 0x10) == 0x10, DataMode = (byte)(response[6] & 0xF),
LraV = (response[7] & 0x02) == 0x02, NwaV = (response[7] & 0x01) == 0x01,
LogicalTrackStartAddress =
(uint)((response[8] << 24) + (response[9] << 16) + (response[10] << 8) + response[11]),
NextWritableAddress =
(uint)((response[12] << 24) + (response[13] << 16) + (response[14] << 8) + response[15]),
FreeBlocks = (uint)((response[16] << 24) + (response[17] << 16) + (response[18] << 8) + response[19]),
FixedPacketSize =
(uint)((response[20] << 24) + (response[21] << 16) + (response[22] << 8) + response[23]),
LogicalTrackSize =
(uint)((response[24] << 24) + (response[25] << 16) + (response[26] << 8) + response[27]),
LastRecordedAddress =
(uint)((response[28] << 24) + (response[29] << 16) + (response[30] << 8) + response[31])
};
if(response.Length < 48)
return decoded;
decoded.LogicalTrackNumber += (ushort)(response[32] << 8);
decoded.SessionNumber += (ushort)(response[33] << 8);
decoded.ReadCompatibilityLba =
(uint)((response[36] << 24) + (response[37] << 16) + (response[38] << 8) + response[39]);
decoded.NextLayerJumpAddress =
(uint)((response[40] << 24) + (response[41] << 16) + (response[42] << 8) + response[43]);
decoded.LastLayerJumpAddress =
(uint)((response[44] << 24) + (response[45] << 16) + (response[46] << 8) + response[47]);
return decoded;
}
}
}