void Source_Data(DataPacket data)
{
// Store each sample.
foreach (var s in data.Samples)
{
overviewTimestamp += data.TimeInterval;
overviewWf.Store(overviewTimestamp, new float[1] {
s
});
}
if (DateTime.Now.Subtract(overviewWfLastCapture).TotalMilliseconds >= LongAcquisitionTime * 1000)
{
if (OverviewWaveform != null)
{
OverviewWaveform(overviewWf);
}
overviewWf = new Waveform(1, 6000000);
overviewTimestamp = 0.0f;
overviewWfLastCapture = DateTime.Now;
}
}
void ProcessWaveform(DataPacket data)
{
AcquisitionLength = 1 + (int)(AcquisitionTime * Source.SampleRate);
if (AcquisitionLength < 15)
{
AcquisitionLength = 15;
}
Pretrigger = (int)(PretriggerTime * Source.SampleRate) + AcquisitionLength / 2;
lock (samplesOverflowSink)
{
samplesOverflowSink.AddRange(data.Samples);
var pretriggerSampleDepth = (int)Source.SampleRate;
if (samplesOverflowSink.Count > pretriggerSampleDepth)
{
samplesOverflowSink.RemoveRange(0, samplesOverflowSink.Count - pretriggerSampleDepth);
}
var triggerInfo = new TriggerInfo(true, 0); // dummy
while (triggerInfo.Triggered && samplesOverflowSink.Count >= AcquisitionLength + Pretrigger) // always keep 1 waveform extra in memory
{
triggerInfo = Trigger.IsTriggered(samplesOverflowSink, 0);
// Skip the waveform (if we keep trigger) till we satisfy the pretrigger requirement.
while (triggerInfo.Triggered && triggerInfo.TriggerPoint < Pretrigger)
{
triggerInfo = Trigger.IsTriggered(samplesOverflowSink, triggerInfo.TriggerPoint);
}
// Only process when actually triggered.
if (!triggerInfo.Triggered)
{
break;
}
// We take the waveform from the buffer at the triggerpoint, but also subtracting the pre-trigger sample depth.
var waveformStart = triggerInfo.TriggerPoint - Pretrigger;
// Get these samples, and put them into the waveform.
var waveformSamples = samplesOverflowSink.Skip(waveformStart).Take(AcquisitionLength).ToArray();
if (waveformSamples.Length != AcquisitionLength)
{
break;
}
var waveform = new Waveform(1, AcquisitionLength);
var timestamp = -Pretrigger * data.TimeInterval;
foreach (var s in waveformSamples)
{
timestamp += data.TimeInterval;
waveform.Store(timestamp, new float[1] {
s
});
}
FireTriggeredWaveform(waveform);
samplesOverflowSink.RemoveRange(0, waveformStart + AcquisitionLength - 1);
}
}
}
void ProcessWaveform(DataPacket data)
{
AcquisitionLength = 1+(int)(AcquisitionTime*Source.SampleRate);
if (AcquisitionLength < 15) AcquisitionLength = 15;
Pretrigger = (int) (PretriggerTime*Source.SampleRate) + AcquisitionLength / 2;
lock (samplesOverflowSink)
{
samplesOverflowSink.AddRange(data.Samples);
var pretriggerSampleDepth = (int) Source.SampleRate;
if (samplesOverflowSink.Count > pretriggerSampleDepth)
{
samplesOverflowSink.RemoveRange(0, samplesOverflowSink.Count - pretriggerSampleDepth);
}
var triggerInfo = new TriggerInfo(true, 0); // dummy
while (triggerInfo.Triggered && samplesOverflowSink.Count >= AcquisitionLength + Pretrigger) // always keep 1 waveform extra in memory
{
triggerInfo = Trigger.IsTriggered(samplesOverflowSink, 0);
// Skip the waveform (if we keep trigger) till we satisfy the pretrigger requirement.
while (triggerInfo.Triggered && triggerInfo.TriggerPoint < Pretrigger)
{
triggerInfo = Trigger.IsTriggered(samplesOverflowSink, triggerInfo.TriggerPoint );
}
// Only process when actually triggered.
if (!triggerInfo.Triggered) break;
// We take the waveform from the buffer at the triggerpoint, but also subtracting the pre-trigger sample depth.
var waveformStart = triggerInfo.TriggerPoint - Pretrigger;
// Get these samples, and put them into the waveform.
var waveformSamples = samplesOverflowSink.Skip(waveformStart).Take(AcquisitionLength).ToArray();
if (waveformSamples.Length != AcquisitionLength) break;
var waveform = new Waveform(1, AcquisitionLength);
var timestamp = -Pretrigger*data.TimeInterval;
foreach(var s in waveformSamples)
{
timestamp += data.TimeInterval;
waveform.Store(timestamp, new float[1] {s});
}
FireTriggeredWaveform(waveform);
samplesOverflowSink.RemoveRange(0, waveformStart+AcquisitionLength-1);
}
}
}
