public BatCallViewModel(BatNodeLog log, BatCall batCall, int index)
{
Index = index;
_log = log;
_batCall = batCall;
_fftAnalyzer = new FftAnalyzer(2, 5);
}
public void Recalculate(BatCall call)
{
FftResult fftResult = Analyze(call);
call.DcOffset = fftResult.DcOffset;
uint maxPeak = 0;
int maxPeakIndex = -1;
foreach (int peakIndex in fftResult.Peaks)
{
uint peakValue = fftResult.FftData[peakIndex];
if (peakValue > maxPeak)
{
maxPeak = peakValue;
maxPeakIndex = peakIndex;
}
}
if ((maxPeakIndex >= 0) && (maxPeak > 10))
{
call.MaxFrequency = (uint)Math.Round(maxPeakIndex * 0.451);
}
else
{
call.Enabled = false;
}
}
public FftResult Analyze(BatCall call)
{
FftResult result = new FftResult();
result.FftData = BuildFft(call);
result.DcOffset = result.FftData[0];
result.Peaks = GetPeaks(result.FftData).Select(p => p.Key).ToArray();
return(result);
}
public FftResult Analyze(BatCall call)
{
FftResult result = new FftResult();
result.FftData = BuildFft(call);
result.DcOffset = result.FftData[0];
result.Peaks = GetPeaks(result.FftData).Select(p => p.Key).ToArray();
return result;
}
public uint[] BuildFft(BatCall call)
{
byte[] data = call.FftData;
uint[] fft = new uint[data.Length / 2];
for (int i = 0; i < data.Length / 2; i++)
{
fft[i] = BitConverter.ToUInt16(data, i * 2);
}
return(fft);
}
public uint[] BuildFft(BatCall call)
{
byte[] data = call.FftData;
uint[] fft = new uint[data.Length / 2];
for (int i = 0; i < data.Length / 2; i++)
{
fft[i] = BitConverter.ToUInt16(data, i * 2);
}
return fft;
}
private void ReadCallRecord(BatNodeLog log, BinaryReader reader)
{
BatCall call = new BatCall();
call.Duration = reader.ReadUInt32();
call.StartTimeMs = reader.ReadUInt32();
call.ClippedSamples = reader.ReadUInt16();
call.MaxPower = reader.ReadUInt16();
call.MissedSamples = reader.ReadUInt16();
call.FftData = reader.ReadBytes(512);
AnalyzeFftData(call);
log.Calls.Add(call);
}
private void ReadCallRecordV1(BatNodeLog log, BinaryReader reader)
{
BatCall call = new BatCall();
call.Duration = reader.ReadUInt32();
call.StartTimeMs = reader.ReadUInt32();
call.ClippedSamples = reader.ReadUInt16();
call.MaxPower = reader.ReadUInt16();
call.MissedSamples = reader.ReadUInt16();
call.FftData = reader.ReadBytes(512);
if (call.Duration > 100000)
{
call.Enabled = false;
}
AnalyzeFftData(call);
log.Calls.Add(call);
}
private void AnalyzeFftData(BatCall call)
{
FftResult fftResult = _fftAnalyzer.Analyze(call);
call.DcOffset = (uint)fftResult.DcOffset;
uint maxPeak = 0;
int maxPeakIndex = -1;
foreach (int peakIndex in fftResult.Peaks)
{
uint peakValue = fftResult.FftData[peakIndex];
if (peakValue > maxPeak)
{
maxPeak = peakValue;
maxPeakIndex = peakIndex;
}
}
if (maxPeakIndex >= 0 && maxPeak > 10)
{
call.MaxFrequency = (uint)(maxPeakIndex / 2);
}
else
{
call.Enabled = false;
}
}
private void AnalyzeFftData(BatCall call)
{
//_fftAnalyzer.Recalculate(call);
}
