public P25Decoder(int sampleRate, SampleType sampleType)
: base(sampleType)
{
if (sampleType == SampleType.COMPLEX) //JG This is used when listening to the raw feed, not demodulated.
{
mBasebandFilter = new DSP.Filter.ComplexFIRFilter(DSP.Filter.FilterFactory.getLowPass(sampleRate, 5000, 31, WindowType.HAMMING), 1.0);
this.addComplexListener(mBasebandFilter);
mBasebandFilter.SetListener(mDemodulator);
mDemodulator.setListener(getRealReceiver());
}
mSymbolFilter = new DSP.Filter.C4FMSymbolFilter(sampleRate);
addRealSampleListener(mSymbolFilter);
mSymbolFilter.SetOutputListener(mSlicer);
mMessageProcessor = new DSP.FSK.P25MessageProcessor();
mNormalFramer = new DSP.FSK.P25MessageFramer(P25.FrameSync.P25_PHASE1.getSync(), 64, false);
mSlicer.AddListener(mNormalFramer);
mNormalFramer.setListener(mMessageProcessor);
mInvertedFramer = new DSP.FSK.P25MessageFramer(P25.FrameSync.P25_PHASE1_INVERTED.getSync(), 64, true);
mSlicer.AddListener(mInvertedFramer);
mInvertedFramer.setListener(mMessageProcessor);
mMessageProcessor.addMessageListener(this);
}
public P25Decoder(int sampleRate, SampleType sampleType)
: base(sampleType)
{
if (sampleType == SampleType.COMPLEX) //JG This is used when listening to the raw feed, not demodulated.
{
mBasebandFilter = new DSP.Filter.ComplexFIRFilter(DSP.Filter.FilterFactory.getLowPass(sampleRate, 5000, 31, WindowType.HAMMING), 1.0);
this.addComplexListener(mBasebandFilter);
mBasebandFilter.SetListener(mDemodulator);
mDemodulator.setListener(getRealReceiver());
}
mSymbolFilter = new DSP.Filter.C4FMSymbolFilter(sampleRate);
addRealSampleListener(mSymbolFilter);
mSymbolFilter.SetOutputListener(mSlicer);
mMessageProcessor = new DSP.FSK.P25MessageProcessor();
mNormalFramer = new DSP.FSK.P25MessageFramer(P25.FrameSync.P25_PHASE1.getSync(), 64, false);
mSlicer.AddListener(mNormalFramer);
mNormalFramer.setListener(mMessageProcessor);
mInvertedFramer = new DSP.FSK.P25MessageFramer(P25.FrameSync.P25_PHASE1_INVERTED.getSync(), 64, true);
mSlicer.AddListener(mInvertedFramer);
mInvertedFramer.setListener(mMessageProcessor);
mMessageProcessor.addMessageListener(this);
}
