public Hdf5AcquisitionFileWriter(string aFilename, string groupName = "/EEG")
{
fileId = Hdf5.CreateFile(aFilename);
_groupName = groupName;
_groupId = Hdf5.CreateGroup(fileId, _groupName);
Header = new Hdf5AcquisitionFile();
_nrOfRecords = 0;
_sampleCount = 0;
}
// private readonly ReaderWriterLockSlim lock_ = new ReaderWriterLockSlim();
public Hdf5AcquisitionFileWriter(string filename, string groupName = "ROOT")
{
H5E.set_auto(H5E.DEFAULT, null, IntPtr.Zero);
//lock_.EnterWriteLock();
_filename = filename;
fileId = Hdf5.CreateFile(filename);
_groupName = groupName;
_groupId = Hdf5.CreateGroup(fileId, _groupName);
Header = new Hdf5AcquisitionFile();
_nrOfRecords = 0;
_sampleCount = 0;
//lock_.ExitWriteLock();
}
/// <summary>
/// Writes data to the hdf5 file.
/// </summary>
public void Write(IList <double[]> signals)
{
int cols = signals.Count();
if (cols == 0)
{
return;
}
int rows = signals[0].Length;
if (rows == 0)
{
return;
}
double sr = _header.Recording.SampleRate;
var data = new short[rows, cols];
//var byteLength = rows * sizeof(short);
for (int i = 0; i < cols; i++)
{
var sig = signals[i];
for (int j = 0; j < rows; j++)
{
data[j, i] = convert2Short(sig[j], i);
}
}
var dataName = string.Concat("/", _groupName, "/Data");
if (_nrOfRecords == 0)
{
_header.Recording.StartTime = DateTime.Now;
Hdf5.CreateGroup(fileId, _groupName);
dset = new ChunkedDataset <short>(dataName, fileId, data);
}
else
{
dset.AppendDataset(data);
}
_nrOfRecords++;
}
public static object WriteObject(hid_t groupId, object writeValue, string groupName = null)
{
if (writeValue == null)
{
throw new ArgumentNullException(nameof(writeValue));
}
bool createGroupName = !string.IsNullOrWhiteSpace(groupName);
if (createGroupName)
{
groupId = Hdf5.CreateGroup(groupId, groupName);
}
Type tyObject = writeValue.GetType();
foreach (Attribute attr in Attribute.GetCustomAttributes(tyObject))
{
Hdf5SaveAttribute legAt = attr as Hdf5SaveAttribute;
if (legAt != null)
{
Hdf5Save kind = legAt.SaveKind;
if (kind == Hdf5Save.DoNotSave)
{
return(writeValue);
}
}
}
WriteProperties(tyObject, writeValue, groupId);
WriteFields(tyObject, writeValue, groupId);
WriteHdf5Attributes(tyObject, groupId, groupName);
if (createGroupName)
{
Hdf5.CloseGroup(groupId);
}
return(writeValue);
}