public bool WriteSectorsTag(byte[] data, ulong sectorAddress, uint length, SectorTagType tag)
{
if (!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return(false);
}
CommonTypes.Structs.Track track =
_writingTracks.FirstOrDefault(trk => sectorAddress >= trk.TrackStartSector &&
sectorAddress <= trk.TrackEndSector);
if (track is null)
{
ErrorMessage = $"Can't found track containing {sectorAddress}";
return(false);
}
switch (tag)
{
case SectorTagType.CdTrackFlags: return(WriteSectorTag(data, sectorAddress, tag));
case SectorTagType.CdSectorSubchannel:
{
if (track.TrackSubchannelType == 0)
{
ErrorMessage =
$"Trying to write subchannel to track {track.TrackSequence}, that does not have subchannel";
return(false);
}
if (data.Length % 96 != 0)
{
ErrorMessage = "Incorrect data size for subchannel";
return(false);
}
for (uint i = 0; i < length; i++)
{
_imageStream.
Seek((long)(track.TrackFileOffset + (((i + sectorAddress) - track.TrackStartSector) * (ulong)(track.TrackRawBytesPerSector + 96))) + track.TrackRawBytesPerSector,
SeekOrigin.Begin);
_imageStream.Write(data, (int)(i * 96), 96);
}
return(true);
}
default:
ErrorMessage = $"Unsupported tag type {tag}";
return(false);
}
}
public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
{
if (!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return(false);
}
CommonTypes.Structs.Track track =
_writingTracks.FirstOrDefault(trk => sectorAddress >= trk.TrackStartSector &&
sectorAddress <= trk.TrackEndSector);
if (track is null)
{
ErrorMessage = $"Can't found track containing {sectorAddress}";
return(false);
}
if (sectorAddress + length > track.TrackEndSector + 1)
{
ErrorMessage = "Can't cross tracks";
return(false);
}
if (data.Length % track.TrackRawBytesPerSector != 0)
{
ErrorMessage = "Incorrect data size";
return(false);
}
uint subchannelSize = (uint)(track.TrackSubchannelType != TrackSubchannelType.None ? 96 : 0);
for (uint i = 0; i < length; i++)
{
_imageStream.
Seek((long)(track.TrackFileOffset + (((i + sectorAddress) - track.TrackStartSector) * (ulong)(track.TrackRawBytesPerSector + subchannelSize))),
SeekOrigin.Begin);
_imageStream.Write(data, (int)(i * track.TrackRawBytesPerSector), track.TrackRawBytesPerSector);
}
return(true);
}
public bool WriteSector(byte[] data, ulong sectorAddress)
{
if (!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return(false);
}
CommonTypes.Structs.Track track =
_writingTracks.FirstOrDefault(trk => sectorAddress >= trk.TrackStartSector &&
sectorAddress <= trk.TrackEndSector);
if (track is null)
{
ErrorMessage = $"Can't found track containing {sectorAddress}";
return(false);
}
if (track.TrackBytesPerSector != track.TrackRawBytesPerSector)
{
ErrorMessage = "Invalid write mode for this sector";
return(false);
}
if (data.Length != track.TrackRawBytesPerSector)
{
ErrorMessage = "Incorrect data size";
return(false);
}
_imageStream.
Seek((long)(track.TrackFileOffset + ((sectorAddress - track.TrackStartSector) * (ulong)track.TrackRawBytesPerSector)),
SeekOrigin.Begin);
_imageStream.Write(data, 0, data.Length);
return(true);
}
public bool Close()
{
if (!IsWriting)
{
ErrorMessage = "Image is not opened for writing";
return(false);
}
byte sessions = byte.MinValue;
foreach (CommonTypes.Structs.Track t in _writingTracks.Where(t => t.TrackSession > byte.MinValue))
{
sessions = (byte)t.TrackSession;
}
var header = new Header
{
signature = _alcoholSignature,
version = new byte[]
{
1, 5
},
type = MediaTypeToMediumType(_imageInfo.MediaType),
sessions = sessions,
structuresOffset = (uint)(_pfi == null ? 0 : 96),
sessionOffset = (uint)(_pfi == null ? 96 : 4196),
unknown1 = new ushort[2],
unknown2 = new uint[2],
unknown3 = new uint[6],
unknown4 = new uint[3]
};
// Alcohol sets this always, Daemon Tool expects this
header.unknown1[0] = 2;
_alcSessions = new Dictionary <int, Session>();
_alcTracks = new Dictionary <int, Track>();
_alcToc = new Dictionary <int, Dictionary <int, Track> >();
_writingTracks = _writingTracks.OrderBy(t => t.TrackSession).ThenBy(t => t.TrackSequence).ToList();
_alcTrackExtras = new Dictionary <int, TrackExtra>();
long currentTrackOffset = header.sessionOffset + (Marshal.SizeOf <Session>() * sessions);
byte[] tmpToc = null;
if (_fullToc != null)
{
byte[] fullTocSize = BigEndianBitConverter.GetBytes((short)_fullToc.Length);
tmpToc = new byte[_fullToc.Length + 2];
Array.Copy(_fullToc, 0, tmpToc, 2, _fullToc.Length);
tmpToc[0] = fullTocSize[0];
tmpToc[1] = fullTocSize[1];
}
FullTOC.CDFullTOC?decodedToc = FullTOC.Decode(tmpToc);
long currentExtraOffset = currentTrackOffset;
int extraCount = 0;
for (int i = 1; i <= sessions; i++)
{
if (decodedToc.HasValue)
{
extraCount += decodedToc.Value.TrackDescriptors.Count(t => t.SessionNumber == i);
currentExtraOffset += Marshal.SizeOf <Track>() *
decodedToc.Value.TrackDescriptors.Count(t => t.SessionNumber == i);
}
else
{
currentExtraOffset += Marshal.SizeOf <Track>() * 3;
extraCount += 3;
currentExtraOffset += Marshal.SizeOf <Track>() * _writingTracks.Count(t => t.TrackSession == i);
extraCount += _writingTracks.Count(t => t.TrackSession == i);
if (i < sessions)
{
currentExtraOffset += Marshal.SizeOf <Track>() * 2;
extraCount += 2;
}
}
}
long footerOffset = currentExtraOffset + (Marshal.SizeOf <TrackExtra>() * extraCount);
if (_bca != null)
{
header.bcaOffset = (uint)footerOffset;
footerOffset += _bca.Length;
}
if (_isDvd)
{
_alcSessions.Add(1, new Session
{
sessionEnd = (int)((_writingTracks[0].TrackEndSector - _writingTracks[0].TrackStartSector) + 1),
sessionSequence = 1,
allBlocks = 1,
nonTrackBlocks = 3,
firstTrack = 1,
lastTrack = 1,
trackOffset = 4220
});
footerOffset = 4300;
if (_bca != null)
{
footerOffset += _bca.Length;
}
_alcTracks.Add(1, new Track
{
mode = TrackMode.DVD,
adrCtl = 20,
point = 1,
extraOffset = (uint)((_writingTracks[0].TrackEndSector - _writingTracks[0].TrackStartSector) + 1),
sectorSize = 2048,
files = 1,
footerOffset = (uint)footerOffset,
unknown = new byte[18],
unknown2 = new byte[24]
});
_alcToc.Add(1, _alcTracks);
}
else
{
for (int i = 1; i <= sessions; i++)
{
CommonTypes.Structs.Track firstTrack = _writingTracks.First(t => t.TrackSession == i);
CommonTypes.Structs.Track lastTrack = _writingTracks.Last(t => t.TrackSession == i);
_alcSessions.Add(i, new Session
{
sessionStart = (int)firstTrack.TrackStartSector - 150,
sessionEnd = (int)lastTrack.TrackEndSector + 1,
sessionSequence = (ushort)i,
allBlocks = (byte)(decodedToc?.TrackDescriptors.Count(t => t.SessionNumber == i) ??
_writingTracks.Count(t => t.TrackSession == i) + 3),
nonTrackBlocks =
(byte)(decodedToc?.TrackDescriptors.Count(t => t.SessionNumber == i && t.POINT >= 0xA0 &&
t.POINT <= 0xAF) ?? 3),
firstTrack = (ushort)firstTrack.TrackSequence,
lastTrack = (ushort)lastTrack.TrackSequence,
trackOffset = (uint)currentTrackOffset
});
Dictionary <int, Track> thisSessionTracks = new Dictionary <int, Track>();
_trackFlags.TryGetValue((byte)firstTrack.TrackSequence, out byte firstTrackControl);
_trackFlags.TryGetValue((byte)lastTrack.TrackSequence, out byte lastTrackControl);
if (firstTrackControl == 0 &&
firstTrack.TrackType != TrackType.Audio)
{
firstTrackControl = (byte)CdFlags.DataTrack;
}
if (lastTrackControl == 0 &&
lastTrack.TrackType != TrackType.Audio)
{
lastTrackControl = (byte)CdFlags.DataTrack;
}
(byte minute, byte second, byte frame)leadinPmsf = LbaToMsf(lastTrack.TrackEndSector + 1);
if (decodedToc?.TrackDescriptors.Any(t => t.SessionNumber == i && t.POINT >= 0xA0 &&
t.POINT <= 0xAF) == true)
{
foreach (FullTOC.TrackDataDescriptor tocTrk in
decodedToc.Value.TrackDescriptors.Where(t => t.SessionNumber == i && t.POINT >= 0xA0 &&
t.POINT <= 0xAF))
{
thisSessionTracks.Add(tocTrk.POINT, new Track
{
adrCtl = (byte)((tocTrk.ADR << 4) + tocTrk.CONTROL),
tno = tocTrk.TNO,
point = tocTrk.POINT,
min = tocTrk.Min,
sec = tocTrk.Sec,
frame = tocTrk.Frame,
zero = tocTrk.Zero,
pmin = tocTrk.PMIN,
psec = tocTrk.PSEC,
pframe = tocTrk.PFRAME,
mode = TrackMode.NoData,
unknown = new byte[18],
unknown2 = new byte[24],
extraOffset = (uint)currentExtraOffset
});
currentTrackOffset += Marshal.SizeOf <Track>();
currentExtraOffset += Marshal.SizeOf <TrackExtra>();
}
}
else
{
thisSessionTracks.Add(0xA0, new Track
{
adrCtl = (byte)((1 << 4) + firstTrackControl),
pmin = (byte)firstTrack.TrackSequence,
mode = TrackMode.NoData,
point = 0xA0,
unknown = new byte[18],
unknown2 = new byte[24],
psec = (byte)(_imageInfo.MediaType == MediaType.CDI
? 0x10
: _writingTracks.Any(t => t.TrackType == TrackType.CdMode2Form1 ||
t.TrackType == TrackType.CdMode2Form2 ||
t.TrackType == TrackType.CdMode2Formless)
? 0x20
: 0),
extraOffset = (uint)currentExtraOffset
});
thisSessionTracks.Add(0xA1, new Track
{
adrCtl = (byte)((1 << 4) + lastTrackControl),
pmin = (byte)lastTrack.TrackSequence,
mode = TrackMode.NoData,
point = 0xA1,
unknown = new byte[18],
unknown2 = new byte[24],
extraOffset = (uint)currentExtraOffset
});
thisSessionTracks.Add(0xA2, new Track
{
adrCtl = (byte)((1 << 4) + firstTrackControl),
zero = 0,
pmin = leadinPmsf.minute,
psec = leadinPmsf.second,
pframe = leadinPmsf.frame,
mode = TrackMode.NoData,
point = 0xA2,
unknown = new byte[18],
unknown2 = new byte[24],
extraOffset = (uint)currentExtraOffset
});
currentExtraOffset += Marshal.SizeOf <TrackExtra>() * 3;
currentTrackOffset += Marshal.SizeOf <Track>() * 3;
}
foreach (CommonTypes.Structs.Track track in _writingTracks.Where(t => t.TrackSession == i).
OrderBy(t => t.TrackSequence))
{
var alcTrk = new Track();
if (decodedToc?.TrackDescriptors.Any(t => t.SessionNumber == i &&
t.POINT == track.TrackSequence) == true)
{
FullTOC.TrackDataDescriptor tocTrk =
decodedToc.Value.TrackDescriptors.First(t => t.SessionNumber == i &&
t.POINT == track.TrackSequence);
alcTrk.adrCtl = (byte)((tocTrk.ADR << 4) + tocTrk.CONTROL);
alcTrk.tno = tocTrk.TNO;
alcTrk.point = tocTrk.POINT;
alcTrk.min = tocTrk.Min;
alcTrk.sec = tocTrk.Sec;
alcTrk.frame = tocTrk.Frame;
alcTrk.zero = tocTrk.Zero;
alcTrk.pmin = tocTrk.PMIN;
alcTrk.psec = tocTrk.PSEC;
alcTrk.pframe = tocTrk.PFRAME;
}
else
{
(byte minute, byte second, byte frame)msf = LbaToMsf(track.TrackStartSector);
_trackFlags.TryGetValue((byte)track.TrackSequence, out byte trackControl);
if (trackControl == 0 &&
track.TrackType != TrackType.Audio)
{
trackControl = (byte)CdFlags.DataTrack;
}
alcTrk.adrCtl = (byte)((1 << 4) + trackControl);
alcTrk.point = (byte)track.TrackSequence;
alcTrk.zero = 0;
alcTrk.pmin = msf.minute;
alcTrk.psec = msf.second;
alcTrk.pframe = msf.frame;
}
alcTrk.mode = TrackTypeToTrackMode(track.TrackType);
alcTrk.subMode = track.TrackSubchannelType != TrackSubchannelType.None
? SubchannelMode.Interleaved : SubchannelMode.None;
alcTrk.sectorSize = (ushort)(track.TrackRawBytesPerSector +
(track.TrackSubchannelType != TrackSubchannelType.None ? 96 : 0));
alcTrk.startLba = (uint)(track.TrackStartSector + track.TrackPregap);
alcTrk.startOffset = track.TrackFileOffset + (alcTrk.sectorSize * track.TrackPregap);
alcTrk.files = 1;
alcTrk.extraOffset = (uint)currentExtraOffset;
alcTrk.footerOffset = (uint)footerOffset;
if (track.TrackSequence == firstTrack.TrackSequence &&
track.TrackSequence > 1)
{
alcTrk.startLba -= 150;
alcTrk.startOffset -= (ulong)(alcTrk.sectorSize * 150);
}
// Alcohol seems to set that for all CD tracks
// Daemon Tools expect it to be like this
alcTrk.unknown = new byte[]
{
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00
};
alcTrk.unknown2 = new byte[24];
thisSessionTracks.Add((int)track.TrackSequence, alcTrk);
currentTrackOffset += Marshal.SizeOf <Track>();
currentExtraOffset += Marshal.SizeOf <TrackExtra>();
var trkExtra = new TrackExtra
{
sectors = (uint)((track.TrackEndSector - track.TrackStartSector) + 1)
};
if (track.TrackSequence == firstTrack.TrackSequence)
{
trkExtra.pregap = 150;
}
// When track mode changes there's a mandatory gap, Alcohol needs it
else if (thisSessionTracks.TryGetValue((int)(track.TrackSequence - 1),
out Track previousTrack) &&
_alcTrackExtras.TryGetValue((int)(track.TrackSequence - 1),
out TrackExtra previousExtra) &&
previousTrack.mode != alcTrk.mode)
{
previousExtra.sectors -= 150;
trkExtra.pregap = 150;
_alcTrackExtras.Remove((int)(track.TrackSequence - 1));
_alcTrackExtras.Add((int)(track.TrackSequence - 1), previousExtra);
}
else
{
trkExtra.pregap = 0;
}
_alcTrackExtras.Add((int)track.TrackSequence, trkExtra);
}
if (decodedToc?.TrackDescriptors.Any(t => t.SessionNumber == i && t.POINT >= 0xB0) == true)
{
foreach (FullTOC.TrackDataDescriptor tocTrk in
decodedToc.Value.TrackDescriptors.Where(t => t.SessionNumber == i && t.POINT >= 0xB0))
{
thisSessionTracks.Add(tocTrk.POINT, new Track
{
adrCtl = (byte)((tocTrk.ADR << 4) + tocTrk.CONTROL),
tno = tocTrk.TNO,
point = tocTrk.POINT,
min = tocTrk.Min,
sec = tocTrk.Sec,
frame = tocTrk.Frame,
zero = tocTrk.Zero,
pmin = tocTrk.PMIN,
psec = tocTrk.PSEC,
pframe = tocTrk.PFRAME,
mode = TrackMode.NoData,
unknown = new byte[18],
unknown2 = new byte[24],
extraOffset = (uint)currentExtraOffset
});
currentExtraOffset += Marshal.SizeOf <TrackExtra>();
currentTrackOffset += Marshal.SizeOf <Track>();
}
}
else if (i < sessions)
{
(byte minute, byte second, byte frame)leadoutAmsf =
LbaToMsf(_writingTracks.First(t => t.TrackSession == i + 1).TrackStartSector - 150);
(byte minute, byte second, byte frame)leadoutPmsf =
LbaToMsf(_writingTracks.OrderBy(t => t.TrackSession).ThenBy(t => t.TrackSequence).Last().
TrackStartSector);
thisSessionTracks.Add(0xB0, new Track
{
point = 0xB0,
adrCtl = 0x50,
zero = 0,
min = leadoutAmsf.minute,
sec = leadoutAmsf.second,
frame = leadoutAmsf.frame,
pmin = leadoutPmsf.minute,
psec = leadoutPmsf.second,
pframe = leadoutPmsf.frame,
unknown = new byte[18],
unknown2 = new byte[24]
});
thisSessionTracks.Add(0xC0, new Track
{
point = 0xC0,
adrCtl = 0x50,
min = 128,
pmin = 97,
psec = 25,
unknown = new byte[18],
unknown2 = new byte[24]
});
currentTrackOffset += Marshal.SizeOf <Track>() * 2;
}
_alcToc.Add(i, thisSessionTracks);
}
}
_alcFooter = new Footer
{
filenameOffset = (uint)(footerOffset + Marshal.SizeOf <Footer>()),
widechar = 1
};
byte[] filename = Encoding.Unicode.GetBytes("*.mdf"); // Yup, Alcohol stores no filename but a wildcard.
// Write header
_descriptorStream.Seek(0, SeekOrigin.Begin);
byte[] block = new byte[Marshal.SizeOf <Header>()];
IntPtr blockPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf <Header>());
System.Runtime.InteropServices.Marshal.StructureToPtr(header, blockPtr, true);
System.Runtime.InteropServices.Marshal.Copy(blockPtr, block, 0, block.Length);
System.Runtime.InteropServices.Marshal.FreeHGlobal(blockPtr);
_descriptorStream.Write(block, 0, block.Length);
// Write DVD structures if present
if (header.structuresOffset != 0)
{
if (_dmi != null)
{
_descriptorStream.Seek(header.structuresOffset, SeekOrigin.Begin);
switch (_dmi.Length)
{
case 2052:
_descriptorStream.Write(_dmi, 0, 2052);
break;
case 2048:
_descriptorStream.Write(new byte[]
{
0x08, 0x02, 0x00, 0x00
}, 0, 4);
_descriptorStream.Write(_dmi, 0, 2048);
break;
}
}
// TODO: Create fake PFI if none present
if (_pfi != null)
{
_descriptorStream.Seek(header.structuresOffset + 2052, SeekOrigin.Begin);
_descriptorStream.Write(_pfi, _pfi.Length - 2048, 2048);
}
}
// Write sessions
_descriptorStream.Seek(header.sessionOffset, SeekOrigin.Begin);
foreach (Session session in _alcSessions.Values)
{
block = new byte[Marshal.SizeOf <Session>()];
blockPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf <Session>());
System.Runtime.InteropServices.Marshal.StructureToPtr(session, blockPtr, true);
System.Runtime.InteropServices.Marshal.Copy(blockPtr, block, 0, block.Length);
System.Runtime.InteropServices.Marshal.FreeHGlobal(blockPtr);
_descriptorStream.Write(block, 0, block.Length);
}
// Write tracks
foreach (KeyValuePair <int, Dictionary <int, Track> > kvp in _alcToc)
{
_descriptorStream.Seek(_alcSessions.First(t => t.Key == kvp.Key).Value.trackOffset, SeekOrigin.Begin);
foreach (Track track in kvp.Value.Values)
{
Track alcoholTrack = track;
// Write extra
if (!_isDvd)
{
long position = _descriptorStream.Position;
_descriptorStream.Seek(alcoholTrack.extraOffset, SeekOrigin.Begin);
block = new byte[Marshal.SizeOf <TrackExtra>()];
if (_alcTrackExtras.TryGetValue(alcoholTrack.point, out TrackExtra extra))
{
blockPtr = System.Runtime.InteropServices.Marshal.
AllocHGlobal(Marshal.SizeOf <TrackExtra>());
System.Runtime.InteropServices.Marshal.StructureToPtr(extra, blockPtr, true);
System.Runtime.InteropServices.Marshal.Copy(blockPtr, block, 0, block.Length);
System.Runtime.InteropServices.Marshal.FreeHGlobal(blockPtr);
}
else
{
alcoholTrack.extraOffset = 0;
}
_descriptorStream.Write(block, 0, block.Length);
_descriptorStream.Seek(position, SeekOrigin.Begin);
}
block = new byte[Marshal.SizeOf <Track>()];
blockPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf <Track>());
System.Runtime.InteropServices.Marshal.StructureToPtr(alcoholTrack, blockPtr, true);
System.Runtime.InteropServices.Marshal.Copy(blockPtr, block, 0, block.Length);
System.Runtime.InteropServices.Marshal.FreeHGlobal(blockPtr);
_descriptorStream.Write(block, 0, block.Length);
}
}
// Write BCA
if (_bca != null)
{
_descriptorStream.Seek(header.bcaOffset, SeekOrigin.Begin);
_descriptorStream.Write(_bca, 0, _bca.Length);
}
// Write footer
_descriptorStream.Seek(footerOffset, SeekOrigin.Begin);
block = new byte[Marshal.SizeOf <Footer>()];
blockPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf <Footer>());
System.Runtime.InteropServices.Marshal.StructureToPtr(_alcFooter, blockPtr, true);
System.Runtime.InteropServices.Marshal.Copy(blockPtr, block, 0, block.Length);
System.Runtime.InteropServices.Marshal.FreeHGlobal(blockPtr);
_descriptorStream.Write(block, 0, block.Length);
// Write filename
_descriptorStream.Write(filename, 0, filename.Length);
// Write filename null termination
_descriptorStream.Write(new byte[]
{
0, 0
}, 0, 2);
_descriptorStream.Flush();
_descriptorStream.Close();
_imageStream.Flush();
_imageStream.Close();
IsWriting = false;
ErrorMessage = "";
return(true);
}
public bool SetTracks(List <CommonTypes.Structs.Track> tracks)
{
ulong currentDataOffset = 0;
_writingTracks = new List <CommonTypes.Structs.Track>();
if (!_isDvd)
{
CommonTypes.Structs.Track[] tmpTracks = tracks.OrderBy(t => t.TrackSequence).ToArray();
for (int i = 1; i < tmpTracks.Length; i++)
{
CommonTypes.Structs.Track firstTrackInSession =
tracks.FirstOrDefault(t => t.TrackSession == tmpTracks[i].TrackSession);
if (firstTrackInSession is null)
{
continue;
}
if (tmpTracks[i].TrackSequence == firstTrackInSession.TrackSequence)
{
if (tmpTracks[i].TrackSequence > 1)
{
tmpTracks[i].TrackStartSector += 150;
}
continue;
}
tmpTracks[i - 1].TrackEndSector += tmpTracks[i].TrackPregap;
tmpTracks[i].TrackPregap = 0;
tmpTracks[i].TrackStartSector = tmpTracks[i - 1].TrackEndSector + 1;
}
tracks = tmpTracks.ToList();
}
foreach (CommonTypes.Structs.Track track in tracks.OrderBy(t => t.TrackSequence))
{
CommonTypes.Structs.Track newTrack = track;
uint subchannelSize;
switch (track.TrackSubchannelType)
{
case TrackSubchannelType.None:
subchannelSize = 0;
break;
case TrackSubchannelType.Raw:
case TrackSubchannelType.RawInterleaved:
subchannelSize = 96;
break;
default:
ErrorMessage = $"Unsupported subchannel type {track.TrackSubchannelType}";
return(false);
}
newTrack.TrackFileOffset = currentDataOffset;
currentDataOffset += (ulong)(newTrack.TrackRawBytesPerSector + subchannelSize) *
((newTrack.TrackEndSector - newTrack.TrackStartSector) + 1);
_writingTracks.Add(newTrack);
}
return(true);
}
public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
{
if (!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return(false);
}
CommonTypes.Structs.Track track =
_writingTracks.FirstOrDefault(trk => sectorAddress >= trk.TrackStartSector &&
sectorAddress <= trk.TrackEndSector);
if (track is null)
{
ErrorMessage = $"Can't found track containing {sectorAddress}";
return(false);
}
if (track.TrackBytesPerSector != track.TrackRawBytesPerSector)
{
ErrorMessage = "Invalid write mode for this sector";
return(false);
}
if (sectorAddress + length > track.TrackEndSector + 1)
{
ErrorMessage = "Can't cross tracks";
return(false);
}
if (data.Length % track.TrackRawBytesPerSector != 0)
{
ErrorMessage = "Incorrect data size";
return(false);
}
switch (track.TrackSubchannelType)
{
case TrackSubchannelType.None:
_imageStream.
Seek((long)(track.TrackFileOffset + ((sectorAddress - track.TrackStartSector) * (ulong)track.TrackRawBytesPerSector)),
SeekOrigin.Begin);
_imageStream.Write(data, 0, data.Length);
ErrorMessage = "";
return(true);
case TrackSubchannelType.Raw:
case TrackSubchannelType.RawInterleaved:
_imageStream.
Seek((long)(track.TrackFileOffset + ((sectorAddress - track.TrackStartSector) * (ulong)(track.TrackRawBytesPerSector + 96))),
SeekOrigin.Begin);
for (uint i = 0; i < length; i++)
{
_imageStream.Write(data, (int)(i * track.TrackRawBytesPerSector), track.TrackRawBytesPerSector);
_imageStream.Position += 96;
}
ErrorMessage = "";
return(true);
default:
ErrorMessage = "Invalid subchannel mode for this sector";
return(false);
}
}
public bool WriteSectorTag(byte[] data, ulong sectorAddress, SectorTagType tag)
{
if (!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return(false);
}
CommonTypes.Structs.Track track =
_writingTracks.FirstOrDefault(trk => sectorAddress >= trk.TrackStartSector &&
sectorAddress <= trk.TrackEndSector);
if (track is null)
{
ErrorMessage = $"Can't found track containing {sectorAddress}";
return(false);
}
switch (tag)
{
case SectorTagType.CdTrackFlags:
{
if (data.Length != 1)
{
ErrorMessage = "Incorrect data size for track flags";
return(false);
}
_trackFlags[(byte)sectorAddress] = data[0];
return(true);
}
case SectorTagType.CdSectorSubchannel:
{
if (track.TrackSubchannelType == 0)
{
ErrorMessage =
$"Trying to write subchannel to track {track.TrackSequence}, that does not have subchannel";
return(false);
}
if (data.Length != 96)
{
ErrorMessage = "Incorrect data size for subchannel";
return(false);
}
_imageStream.
Seek((long)(track.TrackFileOffset + ((sectorAddress - track.TrackStartSector) * (ulong)(track.TrackRawBytesPerSector + 96))) + track.TrackRawBytesPerSector,
SeekOrigin.Begin);
_imageStream.Write(data, 0, data.Length);
return(true);
}
default:
ErrorMessage = $"Unsupported tag type {tag}";
return(false);
}
}
