Examples with BeatDetectAndClassifyResult eplimited.osea.classification.BeatDetectionAndClassification.BeatDetectAndClassifyResult used on opensource projects

Example 1 with BeatDetectAndClassifyResult

use of eplimited.osea.classification.BeatDetectionAndClassification.BeatDetectAndClassifyResult in project streamsx.health by IBMStreams.

the class QRSDetector method process.

/**
	 * Process an incoming tuple that arrived on the specified port.
	 * <P>
	 * Copy the incoming tuple to a new output tuple and submit to the output
	 * port.
	 * </P>
	 * 
	 * @param inputStream
	 *            Port the tuple is arriving on.
	 * @param tuple
	 *            Object representing the incoming tuple.
	 * @throws Exception
	 *             Operator failure, will cause the enclosing PE to terminate.
	 */
@Override
public final void process(StreamingInput<Tuple> inputStream, Tuple tuple) throws Exception {
    int sample = getInputDataAttr().getValue(tuple);
    double timestamp = getInputTimestampAttr().getValue(tuple);
    timeBuffer.add(timestamp);
    BeatDetectAndClassifyResult result = detector.BeatDetectAndClassify(sample);
    logger.trace("tuple=" + tuple.toString());
    logger.trace("result=" + result);
    if (!isOutputDetectionOnly() || (isOutputDetectionOnly() && result.samplesSinceRWaveIfSuccess != 0)) {
        StreamingOutput<OutputTuple> outStream = getOutput(0);
        OutputTuple outTuple = outStream.newTuple();
        outTuple.assign(tuple);
        Double qrsTimestamp = Double.NaN;
        int qrsPosition = -1;
        Double rrInterval = Double.NaN;
        Double rrMinusOneInterval = Double.NaN;
        if (result.samplesSinceRWaveIfSuccess != 0) {
            // calculate timestamp for detected QRS
            qrsPosition = result.samplesSinceRWaveIfSuccess;
            if (qrsPosition <= timeBuffer.size()) {
                qrsTimestamp = calculateTimestampFromQrsPosition(qrsPosition);
            } else {
                logger.error("Detected position larger than available historical data points: qrsPosition=" + qrsPosition);
            }
            // calculate RR interval
            if (qrsTimestamp != Double.NaN) {
                if (previousQrsTimestamp != Double.NaN) {
                    rrMinusOneInterval = previousRRInterval;
                    rrInterval = calculateRRInterval(qrsTimestamp);
                    previousRRInterval = rrInterval;
                }
                previousQrsTimestamp = qrsTimestamp;
            }
        }
        outTuple.setLong(getQrsTimestampAttrName(), Math.round(qrsTimestamp));
        outTuple.setInt(getQrsDelayAttrName(), qrsPosition);
        outTuple.setString(getQrsClassificationAttrName(), BeatType.getByCode(result.beatType).toString());
        outTuple.setDouble(getRRIntervalAttrName(), rrInterval);
        outTuple.setDouble(getPrevRRIntervalAttrName(), rrMinusOneInterval);
        outStream.submit(outTuple);
    }
}