static private ECG loadECGFromSignalTextFile(String signalFileName, int channelToLoad = 1)
{
String signal = signalFileName.Substring(0, signalFileName.Length - 4);
FileStream file = new FileStream(signal + ".txt", FileMode.Open);
StreamReader streamReader = new StreamReader(file);
List <ECGPoint> ecgPoints = new List <ECGPoint>();
string line = "";
line = streamReader.ReadLine();
int count = 0;
while (!(line.Contains("0.000")))
{
if (line == null)
{
break;
}
try
{
line = streamReader.ReadLine();
}
catch (Exception)
{
Console.WriteLine(ecgPoints.ToString());
}
}
do
{
ECGPoint ecgPoint = new ECGPoint();
ecgPoint.Value = (double.Parse(line.Split('\t')[channelToLoad]));
ecgPoint.TimeIndex = count / Convert.ToDouble(Frequency);
ecgPoints.Add(ecgPoint);
} while ((line = streamReader.ReadLine()) != null);
file.Close();
streamReader.Close();
ECG ecg = new ECG();
ecg.Name = signalFileName;
ecg.Points = ecgPoints;
ecg.SamplingRate = Frequency;
ecg.Channel = channelToLoad;
return(ecg);
}
static private ECG loadECGFromSignalBinaryFile(String signalFileName, int channelToLoad = 1)
{
String signal = signalFileName.Substring(0, signalFileName.Length - 4);
FileStream file = new FileStream(signal + ".dat", FileMode.Open);
BinaryReader binReader = new BinaryReader(file);
List <ECGPoint> ecgPoints = new List <ECGPoint>();
int count = 0;
short flag = 0;
long low = 0, high = 0;
byte[] buf = { 0, 0, 0 };
for (int i = 0; i < file.Length / 3; i++)
{
for (short j = 1; j <= 2; j++)
{
count++;
switch (flag)
{
case 0:
try
{
buf = binReader.ReadBytes(3);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
low = buf[1] & 0x0F;
high = buf[1] & 0xF0;
if (channelToLoad == j)
{
if (low > 7)
{
ECGPoint ecgPoint = new ECGPoint();
ecgPoint.TimeIndex = count / Convert.ToDouble(Frequency);
ecgPoint.Value = Convert.ToDouble(buf[0] + (low << 8) - 4096);
ecgPoints.Add(ecgPoint);
}
else
{
ECGPoint ecgPoint = new ECGPoint();
ecgPoint.TimeIndex = count / Convert.ToDouble(Frequency);
ecgPoint.Value = Convert.ToDouble((buf[0] + (low << 8) - 1024) * 0.005);
ecgPoints.Add(ecgPoint);
}
}
flag = 1;
break;
case 1:
if (channelToLoad == j)
{
if (high > 127)
{
ECGPoint ecgPoint = new ECGPoint();
ecgPoint.TimeIndex = count / Convert.ToDouble(Frequency);
ecgPoint.Value = Convert.ToDouble(buf[2] + (high << 4) - 4096);
ecgPoints.Add(ecgPoint);
}
else
{
ECGPoint ecgPoint = new ECGPoint();
ecgPoint.TimeIndex = count / Convert.ToDouble(Frequency);
ecgPoint.Value = Convert.ToDouble((buf[2] + (high << 4) - 1024) * 0.005);
ecgPoints.Add(ecgPoint);
}
}
flag = 0;
break;
}
}
}
file.Close();
binReader.Close();
ECG ecg = new ECG();
ecg.Name = signalFileName;
ecg.Points = ecgPoints;
ecg.SamplingRate = Frequency;
ecg.Channel = channelToLoad;
return(ecg);
// look for HEA ATR DAT & CUST on path etc.
}
