public void Crc16RandomData()
{
byte[] data = new byte[1048576];
FileStream fs = new FileStream(Path.Combine(Consts.TestFilesRoot, "checksums", "random"), FileMode.Open,
FileAccess.Read);
fs.Read(data, 0, 1048576);
fs.Close();
fs.Dispose();
Crc16Context.Data(data, out byte[] result);
Assert.AreEqual(ExpectedRandom, result);
}
public bool Open(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
if (stream.Length < 512)
{
return(false);
}
byte[] headerB = new byte[256];
stream.Read(headerB, 0, 256);
CpcDiskInfo header = Marshal.ByteArrayToStructureLittleEndian <CpcDiskInfo>(headerB);
if (!cpcdskId.SequenceEqual(header.magic) && !edskId.SequenceEqual(header.magic) &&
!du54Id.SequenceEqual(header.magic))
{
return(false);
}
extended = edskId.SequenceEqual(header.magic);
DicConsole.DebugWriteLine("CPCDSK plugin", "Extended = {0}", extended);
DicConsole.DebugWriteLine("CPCDSK plugin", "header.magic = \"{0}\"",
StringHandlers.CToString(header.magic));
DicConsole.DebugWriteLine("CPCDSK plugin", "header.magic2 = \"{0}\"",
StringHandlers.CToString(header.magic2));
DicConsole.DebugWriteLine("CPCDSK plugin", "header.creator = \"{0}\"",
StringHandlers.CToString(header.creator));
DicConsole.DebugWriteLine("CPCDSK plugin", "header.tracks = {0}", header.tracks);
DicConsole.DebugWriteLine("CPCDSK plugin", "header.sides = {0}", header.sides);
if (!extended)
{
DicConsole.DebugWriteLine("CPCDSK plugin", "header.tracksize = {0}", header.tracksize);
}
else
{
for (int i = 0; i < header.tracks; i++)
{
for (int j = 0; j < header.sides; j++)
{
DicConsole.DebugWriteLine("CPCDSK plugin", "Track {0} Side {1} size = {2}", i, j,
header.tracksizeTable[i * header.sides + j] * 256);
}
}
}
ulong currentSector = 0;
sectors = new Dictionary <ulong, byte[]>();
addressMarks = new Dictionary <ulong, byte[]>();
ulong readtracks = 0;
bool allTracksSameSize = true;
ulong sectorsPerTrack = 0;
// Seek to first track descriptor
stream.Seek(256, SeekOrigin.Begin);
for (int i = 0; i < header.tracks; i++)
{
for (int j = 0; j < header.sides; j++)
{
// Track not stored in image
if (extended && header.tracksizeTable[i * header.sides + j] == 0)
{
continue;
}
long trackPos = stream.Position;
byte[] trackB = new byte[256];
stream.Read(trackB, 0, 256);
CpcTrackInfo trackInfo = Marshal.ByteArrayToStructureLittleEndian <CpcTrackInfo>(trackB);
if (!trackId.SequenceEqual(trackInfo.magic))
{
DicConsole.ErrorWriteLine("Not the expected track info.");
return(false);
}
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].magic = \"{0}\"",
StringHandlers.CToString(trackInfo.magic), i, j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].bps = {0}",
SizeCodeToBytes(trackInfo.bps), i, j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].dataRate = {0}", trackInfo.dataRate,
i, j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].filler = 0x{0:X2}", trackInfo.filler,
i, j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].gap3 = 0x{0:X2}", trackInfo.gap3, i,
j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].padding = {0}", trackInfo.padding, i,
j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].recordingMode = {0}",
trackInfo.recordingMode, i, j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sectors = {0}", trackInfo.sectors, i,
j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].side = {0}", trackInfo.side, i, j);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].track = {0}", trackInfo.track, i, j);
if (trackInfo.sectors != sectorsPerTrack)
{
if (sectorsPerTrack == 0)
{
sectorsPerTrack = trackInfo.sectors;
}
else
{
allTracksSameSize = false;
}
}
byte[][] thisTrackSectors = new byte[trackInfo.sectors][];
byte[][] thisTrackAddressMarks = new byte[trackInfo.sectors][];
for (int k = 1; k <= trackInfo.sectors; k++)
{
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].id = 0x{0:X2}",
trackInfo.sectorsInfo[k - 1].id, i, j, k);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].len = {0}",
trackInfo.sectorsInfo[k - 1].len, i, j, k);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].side = {0}",
trackInfo.sectorsInfo[k - 1].side, i, j, k);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].size = {0}",
SizeCodeToBytes(trackInfo.sectorsInfo[k - 1].size), i, j, k);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].st1 = 0x{0:X2}",
trackInfo.sectorsInfo[k - 1].st1, i, j, k);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].st2 = 0x{0:X2}",
trackInfo.sectorsInfo[k - 1].st2, i, j, k);
DicConsole.DebugWriteLine("CPCDSK plugin", "trackInfo[{1}:{2}].sector[{3}].track = {0}",
trackInfo.sectorsInfo[k - 1].track, i, j, k);
int sectLen = extended
? trackInfo.sectorsInfo[k - 1].len
: SizeCodeToBytes(trackInfo.sectorsInfo[k - 1].size);
byte[] sector = new byte[sectLen];
stream.Read(sector, 0, sectLen);
if (sectLen < SizeCodeToBytes(trackInfo.sectorsInfo[k - 1].size))
{
byte[] temp = new byte[SizeCodeToBytes(trackInfo.sectorsInfo[k - 1].size)];
Array.Copy(sector, 0, temp, 0, sector.Length);
sector = temp;
}
else if (sectLen > SizeCodeToBytes(trackInfo.sectorsInfo[k - 1].size))
{
byte[] temp = new byte[SizeCodeToBytes(trackInfo.sectorsInfo[k - 1].size)];
Array.Copy(sector, 0, temp, 0, temp.Length);
sector = temp;
}
thisTrackSectors[(trackInfo.sectorsInfo[k - 1].id & 0x3F) - 1] = sector;
byte[] amForCrc = new byte[8];
amForCrc[0] = 0xA1;
amForCrc[1] = 0xA1;
amForCrc[2] = 0xA1;
amForCrc[3] = (byte)IBMIdType.AddressMark;
amForCrc[4] = trackInfo.sectorsInfo[k - 1].track;
amForCrc[5] = trackInfo.sectorsInfo[k - 1].side;
amForCrc[6] = trackInfo.sectorsInfo[k - 1].id;
amForCrc[7] = (byte)trackInfo.sectorsInfo[k - 1].size;
Crc16Context.Data(amForCrc, 8, out byte[] amCrc);
byte[] addressMark = new byte[22];
Array.Copy(amForCrc, 0, addressMark, 12, 8);
Array.Copy(amCrc, 0, addressMark, 20, 2);
thisTrackAddressMarks[(trackInfo.sectorsInfo[k - 1].id & 0x3F) - 1] = addressMark;
}
for (int s = 0; s < thisTrackSectors.Length; s++)
{
sectors.Add(currentSector, thisTrackSectors[s]);
addressMarks.Add(currentSector, thisTrackAddressMarks[s]);
currentSector++;
if (thisTrackSectors[s].Length > imageInfo.SectorSize)
{
imageInfo.SectorSize = (uint)thisTrackSectors[s].Length;
}
}
stream.Seek(trackPos, SeekOrigin.Begin);
if (extended)
{
stream.Seek(header.tracksizeTable[i * header.sides + j] * 256, SeekOrigin.Current);
imageInfo.ImageSize += (ulong)(header.tracksizeTable[i * header.sides + j] * 256) - 256;
}
else
{
stream.Seek(header.tracksize, SeekOrigin.Current);
imageInfo.ImageSize += (ulong)header.tracksize - 256;
}
readtracks++;
}
}
DicConsole.DebugWriteLine("CPCDSK plugin", "Read {0} sectors", sectors.Count);
DicConsole.DebugWriteLine("CPCDSK plugin", "Read {0} tracks", readtracks);
DicConsole.DebugWriteLine("CPCDSK plugin", "All tracks are same size? {0}", allTracksSameSize);
imageInfo.Application = StringHandlers.CToString(header.creator);
imageInfo.CreationTime = imageFilter.GetCreationTime();
imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
imageInfo.Sectors = (ulong)sectors.Count;
imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
imageInfo.MediaType = MediaType.CompactFloppy;
imageInfo.ReadableSectorTags.Add(SectorTagType.FloppyAddressMark);
// Debug writing full disk as raw
/*
* FileStream foo = new FileStream(Path.GetFileNameWithoutExtension(imageFilter.GetFilename()) + ".bin", FileMode.Create);
* for(ulong i = 0; i < (ulong)sectors.Count; i++)
* {
* byte[] foob;
* sectors.TryGetValue(i, out foob);
* foo.Write(foob, 0, foob.Length);
* }
* foo.Close();
*/
imageInfo.Cylinders = header.tracks;
imageInfo.Heads = header.sides;
imageInfo.SectorsPerTrack = (uint)(imageInfo.Sectors / (imageInfo.Cylinders * imageInfo.Heads));
return(true);
}