public static TaskEventCollection?Collect(BrainVisionPackage filesContent)
{
IHeaderFileContentVer1 headerContent = filesContent.HeaderFileContent;
IMarkerFileContentVer1?markerContent = filesContent.MarkerFileContent;
List <MarkerInfo>?markers = markerContent?.GetMarkers();
if (markers == null)
{
return(null);
}
double samplingFrequency = Common.GetSamplingFrequencyFromSamplingInterval(headerContent.SamplingInterval !.Value);
TaskEventCollection taskEvents = new TaskEventCollection();
foreach (MarkerInfo marker in markers)
{
TaskEvent taskEvent = new TaskEvent(
//REQUIRED
onset: marker.Position / samplingFrequency,
duration: marker.Length / samplingFrequency)
{
//OPTIONAL
Sample = marker.Position + 1, // I suppose bids uses 1-based sample position. This info is not present in the official bids documentations
TrialType = marker.Type,
Value = !string.IsNullOrEmpty(marker.Description) ? marker.Description : Defs.NotAvailable,
};
taskEvents.Add(taskEvent);
}
return(taskEvents);
}
private void Convert(BrainVisionPackage bvPackage, IBidsPackage bidsPackage, CustomizationInfo info)
{
Warnings = Array.Empty <string>();
PackageConverter converter = new PackageConverter(bvPackage, bidsPackage, info);
converter.CopyBrainVisionFilesToBidsEegModalityFolder();
bvPackage.UpdateMissingKeysWithDefaultValues();
converter.ConvertBrainVisionFilesToBidsFormatFiles();
Warnings = converter.Warnings;
}
/// <exception cref="ArgumentException">Thrown when <paramref name="brainVisionHeaderFilePath"/>consists only of white characters.</exception>
/// <exception cref="InvalidOperationException">Thrown when vision file fails to load.</exception>
/// <exception cref="NotSupportedException">Thrown when units are not recognized.</exception>
public void Convert(string brainVisionHeaderFilePath, CustomizationInfo info)
{
if (string.IsNullOrWhiteSpace(brainVisionHeaderFilePath))
{
throw new ArgumentException(Resources.ArgumentEmptyOrWhiteCharactersExceptionMessage, nameof(brainVisionHeaderFilePath));
}
GenerateSubjectSessionAndTaskIfNotProvided(info, brainVisionHeaderFilePath, out string subjectName, out string?sessionName, out string taskName);
IBidsPackage bidsPackage = CreateBidsPackage(subjectName, sessionName, taskName);
BrainVisionPackage bvPackage = CreateBvPackage(brainVisionHeaderFilePath);
Convert(bvPackage, bidsPackage, info);
}
public static EegChannelCollection?Collect(BrainVisionPackage filesContent)
{
IHeaderFileContentVer1 headerContent = filesContent.HeaderFileContent;
List <ChannelInfo>? inputChannels = headerContent.GetChannelInfos();
if (inputChannels == null)
{
return(null);
}
double samplingFrequency = Common.GetSamplingFrequencyFromSamplingInterval(headerContent.SamplingInterval !.Value);
EegChannelCollection eegChannels = new EegChannelCollection();
foreach (ChannelInfo inputChannel in inputChannels)
{
PrefixedUnit?channelUnits = Common.ConvertTextToPrefixedUnit(inputChannel.Unit);
if (channelUnits == null)
{
throw new NotSupportedException(string.Format(CultureInfo.InvariantCulture, Resources.UrecognizedUnitExceptionMessage, inputChannel.Unit, inputChannel.Name));
}
EegChannel eegChannel = new EegChannel(
//REQUIRED
name: inputChannel.Name,
type: ChannelType.EEG,
units: channelUnits.Value)
{
//OPTIONAL
SamplingFrequency = samplingFrequency,
//Reference = null,
//LowCutoff = null,
//HighCutoff = null,
//Notch = null,
};
eegChannels.Add(eegChannel);
}
return(eegChannels);
}
public static EegElectrodeCollection?Collect(BrainVisionPackage filesContent)
{
IHeaderFileContentVer1 headerContent = filesContent.HeaderFileContent;
List <Coordinates>? inputCoordinates = headerContent.GetChannelCoordinates();
if (inputCoordinates == null)
{
return(null);
}
List <ChannelInfo>?inputChannels = headerContent.GetChannelInfos();
int inputChannelsCount = inputChannels == null ? 0 : inputChannels.Count;
EegElectrodeCollection eegElectrodes = new EegElectrodeCollection();
for (int channelNumber = 0; channelNumber < inputCoordinates.Count; ++channelNumber)
{
Coordinates coordinates = inputCoordinates[channelNumber];
(double cartesianX, double cartesianY, double cartesianZ) = SphericalToCartesian(coordinates);
EegElectrode eegElectrode = new EegElectrode(
//REQUIRED
name: channelNumber < inputChannelsCount ? inputChannels ![channelNumber].Name : string.Empty,
public static EegSidecar Collect(BrainVisionPackage filesContent, CustomizationInfo info, string actualTaskName)
{
IHeaderFileContentVer1 headerContent = filesContent.HeaderFileContent;
List <ChannelInfo>? channelInfos = headerContent.GetChannelInfos();
EegSidecar sidecar = new EegSidecar(
//REQUIRED Generic
actualTaskName,
//REQUIRED EEG
info.EEGReference,
Common.GetSamplingFrequencyFromSamplingInterval(headerContent.SamplingInterval !.Value), // SamplingInterval is in µs
info.PowerLineFrequency,
Defs.NotAvailable)
{
#region Generic
//RECOMMENDED
Manufacturer = info.Manufacturer,
#endregion
#region EEG
//RECOMMENDED
EEGChannelCount = channelInfos == null ? 0 : channelInfos.Count,
ECGChannelCount = 0,
EMGChannelCount = 0,
EOGChannelCount = 0,
MiscChannelCount = 0,
TriggerChannelCount = 0,
//RecordingDuration = 0,
RecordingType = headerContent.Averaged !.Value ? EegSidecar.Recordingtype.epoched : EegSidecar.Recordingtype.continuous,
EpochLength = headerContent.Averaged.Value ? ((headerContent.SegmentDataPoints !.Value * headerContent.SamplingInterval.Value) / 1000000.0) as double?: null,
#endregion
};
return(sidecar);
}
private static BrainVisionPackage CreateBvPackage(string brainVisionHeaderFilePath) => BrainVisionPackage.Load(brainVisionHeaderFilePath);
