public void Dispose()
{
if (this._nco != IntPtr.Zero)
{
FrequencyTranslator.nco_destroy(this._nco);
this._nco = IntPtr.Zero;
}
}
private void Configure(bool refreshOnly = true)
{
if (this._sampleRate != 0.0)
{
this._actualDetectorType = this._detectorType;
bool refresh = false;
this._baseBandDecimationStageCount = StreamControl.GetDecimationStageCount(this._sampleRate, this._actualDetectorType);
this._audioDecimationStageCount = this._decimationStageCount - this._baseBandDecimationStageCount;
int num = 1 << this._baseBandDecimationStageCount;
double num2 = this._sampleRate / (double)num;
if (!refreshOnly || this._mainDownConverter == null || this._mainDownConverter.SampleRate != this._sampleRate || this._mainDownConverter.DecimationRatio != num)
{
this._mainDownConverter = new DownConverter(this._sampleRate, num);
refresh = true;
this.ConfigureHookSampleRates();
}
this._mainDownConverter.Frequency = (double)this._frequency;
if (!refreshOnly || this._ifOffsetTranslator == null || this._ifOffsetTranslator.SampleRate != num2)
{
this._ifOffsetTranslator = new FrequencyTranslator(num2);
}
this._ifOffsetTranslator.Frequency = (double)(-this._ifOffset);
this.UpdateFilters(refresh);
this._carrierLocker.SampleRate = num2;
this._cwDetector.SampleRate = num2;
this._fmDetector.SampleRate = num2;
this._fmDetector.SquelchThreshold = this._squelchThreshold;
this._amDetector.SquelchThreshold = this._squelchThreshold;
this._stereoDecoder.Configure(this._fmDetector.SampleRate, this._audioDecimationStageCount);
this._rdsDecoder.SampleRate = this._fmDetector.SampleRate;
this._stereoDecoder.ForceMono = !this._fmStereo;
switch (this._actualDetectorType)
{
case DetectorType.CW:
this._cwDetector.BfoFrequency = this._cwToneShift;
break;
case DetectorType.NFM:
this._fmDetector.Mode = FmMode.Narrow;
break;
case DetectorType.WFM:
this._fmDetector.Mode = FmMode.Wide;
break;
}
this._agc.SampleRate = this._sampleRate / (double)(1 << this._decimationStageCount);
this._agc.Decay = this._agcDecay;
this._agc.Slope = this._agcSlope;
this._agc.Threshold = this._agcThreshold;
this._agc.UseHang = this._agcUseHang;
this._needConfigure = false;
}
}
public unsafe void Process(Complex *buffer, int length)
{
FrequencyTranslator.nco_process(this._nco, buffer, length);
}
public FrequencyTranslator(double sampleRate)
{
this._sampleRate = sampleRate;
this._nco = FrequencyTranslator.nco_create(sampleRate);
}