public BlockScanViewModel(RadioModel model, RadioViewModel view)
{
_model = model;
_mainView = view;
_model.Radio.BlockScanner().FrequencyScanned += BlockScanViewModel_FrequencyScanned;
_model.Radio.BlockScanner().ScanFinished += BlockScanViewModel_ScanFinished;
FromValue = (uint)_model.Radio.CachedInfo.MinFrequency;
ToValue = (uint)_model.Radio.CachedInfo.MaxFrequency;
SquelchValue = -85;
ScanInfo = OFFLINE;
CommandScan = new DelegateCommand(() => TaskUtility.Run(() =>
{
if (ScanState)
{
_model.PauseStreams();
_model.Radio.BlockScanner().Start(FrequncyCollection());
}
else
{
_model.Radio.BlockScanner().Stop();
}
}));
}
private void StartSweep()
{
if (_sweeper != null)
{
_sweeper.Stop();
return;
}
SweepState = true;
_sweeper =
_model.Radio.Sweeper(
_model.Radio.SweepParametersDefault(FromValue, ToValue)
.SetPrecision(PrecisionValue)
.SetIfGain(_model.Radio.IfGain()));
var samples = _sweeper.SampleCount();
if (samples < 1000)
{
_sweeper = null;
SweepState = false;
return;
}
_mainView.SweeperAnalyzer.Clear();
_mainView.SweeperAnalyzer.ReInitialize(FromValue / 1000000.0, ToValue / 1000000.0, samples);
//_mainView.SweeperAnalyzer.SelectedValueChanged += SweeperAnalyzer_SelectedValueChanged;
_sweeper.FrequencySweeped += (s, e) =>
{
_mainView.SpectrumAnalyzer.Clear();
_mainView.SweeperAnalyzer.Update(e);
};
_sweeper.SweepFinished += (s, e) =>
{
SweepState = false;
TaskUtility.Run(() =>
{
_model.FftAnalyzer.Stop(); //free buffer
_model.FftAnalyzer.Start();
if (_mainView.MuteState)
{
return;
}
_model.LiveAudio.Stop(); //free buffer
_model.LiveAudio.Play();
});
_sweeper = null;
GC.Collect();
};
_model.PauseStreams();
_mainView.SpectrumAnalyzer.Clear();
_sweeper.LoopAsync();
}
