private int CalcNumOfBytesInHeader(EDFFile edf)
{
int totalFixedLength = 256;
int ns = edf.Signals.Length;
int totalVariableLength = ns * 16 + (ns * 80) * 2 + (ns * 8) * 6 + (ns * 32);
return(totalFixedLength + totalVariableLength);
}
public void WriteEDF(EDFFile edf, string edfFilePath)
{
edf.Header.NumberOfBytesInHeader.Value = CalcNumOfBytesInHeader(edf);
//----------------- Fixed length header items -----------------
WriteItem(edf.Header.Version);
WriteItem(edf.Header.PatientID);
WriteItem(edf.Header.RecordID);
WriteItem(edf.Header.StartDate);
WriteItem(edf.Header.StartTime);
WriteItem(edf.Header.NumberOfBytesInHeader);
WriteItem(edf.Header.Reserved);
WriteItem(edf.Header.NumberOfDataRecords);
WriteItem(edf.Header.DurationOfDataRecord);
WriteItem(edf.Header.NumberOfSignals);
//----------------- Variable length header items -----------------
WriteItem(edf.Signals.Select(s => s.Label));
WriteItem(edf.Signals.Select(s => s.TransducerType));
WriteItem(edf.Signals.Select(s => s.PhysicalDimension));
WriteItem(edf.Signals.Select(s => s.PhysicalMinimum));
WriteItem(edf.Signals.Select(s => s.PhysicalMaximum));
WriteItem(edf.Signals.Select(s => s.DigitalMinimum));
WriteItem(edf.Signals.Select(s => s.DigitalMaximum));
WriteItem(edf.Signals.Select(s => s.Prefiltering));
WriteItem(edf.Signals.Select(s => s.NumberOfSamples));
WriteItem(edf.Signals.Select(s => s.Reserved));
Console.WriteLine("Writer position after header: " + BaseStream.Position);
Console.WriteLine("Writing signals.");
foreach (var sig in edf.Signals)
{
WriteSignal(sig);
}
Close();
Console.WriteLine("File size: " + File.ReadAllBytes(edfFilePath).Length);
}
