public EDFHeader ReadHeader()
{
EDFHeader h = new EDFHeader();
this.BaseStream.Seek(0, SeekOrigin.Begin);
//------ Fixed length header part --------
h.Version.Value = ReadAscii(HeaderItems.Version);
h.PatientID.Value = ReadAscii(HeaderItems.PatientID);
h.RecordID.Value = ReadAscii(HeaderItems.RecordID);
h.StartDate.Value = ReadAscii(HeaderItems.StartDate);
h.StartTime.Value = ReadAscii(HeaderItems.StartTime);
h.NumberOfBytesInHeader.Value = ReadInt16(HeaderItems.NumberOfBytesInHeader);
h.Reserved.Value = ReadAscii(HeaderItems.Reserved);
h.NumberOfDataRecords.Value = ReadInt16(HeaderItems.NumberOfDataRecords);
h.DurationOfDataRecord.Value = ReadInt16(HeaderItems.DurationOfDataRecord);
h.NumberOfSignals.Value = ReadInt16(HeaderItems.NumberOfSignals);
//------ Variable length header part --------
int ns = h.NumberOfSignals.Value;
h.Labels.Value = ReadMultipleAscii(HeaderItems.Label, ns);
h.TransducerType.Value = ReadMultipleAscii(HeaderItems.TransducerType, ns);
h.PhysicalDimension.Value = ReadMultipleAscii(HeaderItems.PhysicalDimension, ns);
h.PhysicalMinimum.Value = ReadMultipleDouble(HeaderItems.PhysicalMinimum, ns);
h.PhysicalMaximum.Value = ReadMultipleDouble(HeaderItems.PhysicalMaximum, ns);
h.DigitalMinimum.Value = ReadMultipleInt(HeaderItems.DigitalMinimum, ns);
h.DigitalMaximum.Value = ReadMultipleInt(HeaderItems.DigitalMaximum, ns);
h.Prefiltering.Value = ReadMultipleAscii(HeaderItems.Prefiltering, ns);
h.NumberOfSamplesInDataRecord.Value = ReadMultipleInt(HeaderItems.NumberOfSamplesInDataRecord, ns);
h.SignalsReserved.Value = ReadMultipleAscii(HeaderItems.SignalsReserved, ns);
return(h);
}
public EDFSignal[] ReadSignals()
{
EDFHeader header = ReadHeader();
EDFSignal[] signals = new EDFSignal[header.NumberOfSignals.Value];
for (int i = 0; i < signals.Length; i++)
{
signals[i] = new EDFSignal();
signals[i].Label.Value = header.Labels.Value[i];
signals[i].NumberOfSamples.Value = header.NumberOfSamplesInDataRecord.Value[i];
}
//Read the signal sample values
int readPosition = header.NumberOfBytesInHeader.Value;
for (int i = 0; i < signals.Length; i++)
{
signals[i].Samples = ReadSignalSamples(readPosition, signals[i].NumberOfSamples.Value);
readPosition += signals[i].Samples.Length * 2; //2 bytes per integer.
}
return(signals);
}
