public void Navigate()
{
if (!_controlInterface.IsPlaying)
{
return;
}
var rowIndex = frequencyDataGridView.SelectedCells.Count > 0 ? frequencyDataGridView.SelectedCells[0].RowIndex : -1;
if (rowIndex != -1)
{
try
{
var memoryEntry = (MemoryEntry)memoryEntryBindingSource.List[rowIndex];
_controlInterface.FrequencyShiftEnabled = memoryEntry.Shift != 0;
if (_controlInterface.FrequencyShiftEnabled)
{
_controlInterface.FrequencyShift = memoryEntry.Shift;
}
_controlInterface.DetectorType = memoryEntry.DetectorType;
_controlInterface.FilterBandwidth = (int)memoryEntry.FilterBandwidth;
_controlInterface.SetFrequency(memoryEntry.Frequency, true);
}
catch (Exception e)
{
MessageBox.Show(this, e.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
/// <summary>
/// Attempts to tune the radio to a set frequency
/// </summary>
private void TuneRadio()
{
try
{
if (_control != null)
{
_control.SetFrequency(_frequency, false);
}
}
catch (System.ApplicationException)
{
MessageBox.Show("Could not tune the radio", "Auto Start Radio");
}
}
public void Process(Complex *buffer, int length)
{
if (!_scanning)
{
return;
}
if (_control.Frequency == _checkedFrequency)
{
return;
}
if (_workingBuffer == null || _workingBuffer.Length < length)
{
_workingBuffer = new Complex[length];
}
for (var n = 0; n < length; n++)
{
_workingBuffer[n] = buffer[n];
}
if (_window == null || _window.Length < length)
_window = FilterBuilder.MakeWindow(WindowType.Hamming, length);
fixed(Complex *workingPtr = &_workingBuffer[0])
{
fixed(float *winPtr = &_window[0])
Fourier.ApplyFFTWindow(workingPtr, winPtr, length);
Fourier.ForwardTransform(workingPtr, length);
if (_spectrum == null || _spectrum.Length < length)
_spectrum = new float[length];
fixed(float *spectrumPtr = &_spectrum[0])
Fourier.SpectrumPower(workingPtr, spectrumPtr, length);
}
float avg = 0.0f;
for (var n = 0; n < length; n++)
{
avg += _spectrum[n];
}
avg /= length;
_drawing.AddDataPoint(_control.Frequency, avg);
if (_control.Frequency > _gui.EndFreq * 1000000 - _gui.Step * 1000)
{
StopScanning();
}
else
{
if (_control.IsPlaying)
{
_checkedFrequency = _control.Frequency;
_control.SetFrequency(_control.Frequency + _gui.Step * 1000, false);
}
}
}