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Add comments to explain CD dumping variables.

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Natalia Portillo
2019-12-25 16:53:29 +00:00
parent 4aa8c4305c
commit ba9a108a62
1 changed files with 54 additions and 48 deletions
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102
DiscImageChef.Core/Devices/Dumping/CompactDisc.cs
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@@ -73,55 +73,61 @@ namespace DiscImageChef.Core.Devices.Dumping
/// <param name="dskType">Disc type as detected in MMC layer</param>
void CompactDisc(out MediaType dskType)
{
DicContext ctx; // Master database context
Device dbDev; // Device database entry
CdOffset cdOffset; // Read offset from database
bool readcd; // Device supports READ CD
bool read6 = false; // Device supports READ(6)
bool read10 = false; // Device supports READ(10)
bool read12 = false; // Device supports READ(12)
bool read16 = false; // Device supports READ(16)
const uint sectorSize = 2352; // Full sector size
MmcSubchannel supportedSubchannel; // Drive's maximum supported subchannel
uint subSize; // Subchannel size in bytes
bool sense; // Sense indicator
byte[] cmdBuf; // Data buffer
byte[] senseBuf; // Sense buffer
byte[] tmpBuf; // Temporary buffer
FullTOC.CDFullTOC? toc = null; // Full CD TOC
TrackSubchannelType subType; // Track subchannel type
uint blockSize;
List<Track> trackList = new List<Track>();
long lastSector = 0;
Dictionary<byte, byte> trackFlags = new Dictionary<byte, byte>();
TrackType firstTrackType = TrackType.Audio;
Dictionary<int, long> leadOutStarts = new Dictionary<int, long>();
int sessions = 1;
int firstTrackLastSession = 0;
ulong blocks;
Track[] tracks;
var leadOutExtents = new ExtentsULong();
bool supportsLongSectors = true;
DumpHardwareType currentTry = null;
ExtentsULong extents = null;
DateTime timeSpeedStart;
ulong sectorSpeedStart = 0;
double totalDuration = 0;
double currentSpeed = 0;
double maxSpeed = double.MinValue;
double minSpeed = double.MaxValue;
uint blocksToRead = 64;
bool ret;
double imageWriteDuration = 0;
bool newTrim = false;
MhddLog mhddLog;
IbgLog ibgLog;
DateTime start;
DateTime dumpStart = DateTime.UtcNow;
DateTime end;
double cmdDuration = 0;
ulong blocks; // Total number of positive sectors
uint blockSize; // Size of the read sector in bytes
uint blocksToRead = 64; // How many sectors to read at once
CdOffset cdOffset; // Read offset from database
byte[] cmdBuf; // Data buffer
double cmdDuration = 0; // Command execution time
DicContext ctx; // Master database context
DumpHardwareType currentTry = null; // Current dump hardware try
double currentSpeed = 0; // Current read speed
Device dbDev; // Device database entry
DateTime dumpStart = DateTime.UtcNow; // Time of dump start
DateTime end; // Time of operation end
ExtentsULong extents = null; // Extents
TrackType firstTrackType = TrackType.Audio; // Type of first track
IbgLog ibgLog; // IMGBurn log
double imageWriteDuration = 0; // Duration of image write
long lastSector = 0; // Last sector number
var leadOutExtents = new ExtentsULong(); // Lead-out extents
Dictionary<int, long> leadOutStarts = new Dictionary<int, long>(); // Lead-out starts
double maxSpeed = double.MinValue; // Maximum speed
MhddLog mhddLog; // MHDD log
double minSpeed = double.MaxValue; // Minimum speed
bool newTrim = false; // Is trim a new one?
bool read6 = false; // Device supports READ(6)
bool read10 = false; // Device supports READ(10)
bool read12 = false; // Device supports READ(12)
bool read16 = false; // Device supports READ(16)
bool readcd; // Device supports READ CD
bool ret; // Image writing return status
const uint sectorSize = 2352; // Full sector size
ulong sectorSpeedStart = 0; // Used to calculate correct speed
bool sense; // Sense indicator
byte[] senseBuf; // Sense buffer
int sessions = 1; // Number of sessions in disc
DateTime start; // Start of operation
uint subSize; // Subchannel size in bytes
TrackSubchannelType subType; // Track subchannel type
bool supportsLongSectors = true; // Supports reading EDC and ECC
byte[] tmpBuf; // Temporary buffer
FullTOC.CDFullTOC? toc = null; // Full CD TOC
double totalDuration = 0; // Total commands duration
Dictionary<byte, byte> trackFlags = new Dictionary<byte, byte>(); // Track flags
List<Track> trackList = new List<Track>(); // Tracks in disc
Track[] tracks; // Tracks in disc as array
Dictionary<MediaTagType, byte[]> mediaTags = new Dictionary<MediaTagType, byte[]>(); // Media tags
Dictionary<MediaTagType, byte[]>
mediaTags = new Dictionary<MediaTagType, byte[]>(); // Media tags
int firstTrackLastSession =
0; // Number of first track in last session
MmcSubchannel
supportedSubchannel; // Drive's maximum supported subchannel
DateTime timeSpeedStart; // Time of start for speed calculation
dskType = MediaType.CD;