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BFM demod: added phase lock class. Updated copyright notices

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f4exb
2015-12-06 19:47:55 +01:00
parent 7815531b3c
commit f69e69a799
16 changed files with 477 additions and 22 deletions
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plugins/channel/bfm/bfmdemod.cpp
+13 -6
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@@ -1,6 +1,6 @@
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015 F4EXB //
// written by Edouard Griffiths //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
@@ -41,7 +41,7 @@ BFMDemod::BFMDemod(SampleSink* sampleSink) :
m_config.m_afBandwidth = 15000;
m_config.m_squelch = -60.0;
m_config.m_volume = 2.0;
m_config.m_audioSampleRate = DSPEngine::instance()->getAudioSampleRate();
m_config.m_audioSampleRate = DSPEngine::instance()->getAudioSampleRate(); // normally 48 kHz
m_rfFilter = new fftfilt(-50000.0 / 384000.0, 50000.0 / 384000.0, rfFilterFftLength);
apply();
@@ -77,6 +77,8 @@ void BFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
int rf_out;
Real msq, demod;
m_sampleBuffer.clear();
m_settingsMutex.lock();
for (SampleVector::const_iterator it = begin; it != end; ++it)
@@ -116,12 +118,13 @@ void BFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
m_m2Sample = m_m1Sample;
m_m1Sample = rf[i];
m_sampleBuffer.push_back(Sample(demod * (1<<15), 0.0));
Complex e(demod, 0);
if(m_interpolator.interpolate(&m_interpolatorDistanceRemain, e, &ci))
{
quint16 sample = (qint16)(ci.real() * 3000 * m_running.m_volume);
m_sampleBuffer.push_back(Sample(sample, sample));
//m_sampleBuffer.push_back(Sample(sample, sample));
m_audioBuffer[m_audioBufferFill].l = sample;
m_audioBuffer[m_audioBufferFill].r = sample;
++m_audioBufferFill;
@@ -157,7 +160,7 @@ void BFMDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
if(m_sampleSink != 0)
{
m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), false);
m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), true);
}
m_sampleBuffer.clear();
@@ -251,11 +254,15 @@ void BFMDemod::apply()
(m_config.m_inputFrequencyOffset != m_running.m_inputFrequencyOffset))
{
m_settingsMutex.lock();
qDebug() << "BFMDemod::handleMessage: m_rfFilter->create_filter";
Real lowCut = -(m_config.m_rfBandwidth / 2.0) / m_config.m_inputSampleRate;
Real hiCut = (m_config.m_rfBandwidth / 2.0) / m_config.m_inputSampleRate;
m_rfFilter->create_filter(lowCut, hiCut);
m_settingsMutex.unlock();
qDebug() << "BFMDemod::handleMessage: m_rfFilter->create_filter: sampleRate: "
<< m_config.m_inputSampleRate
<< " lowCut: " << lowCut * m_config.m_inputSampleRate
<< " hiCut: " << hiCut * m_config.m_inputSampleRate;
}
if((m_config.m_afBandwidth != m_running.m_afBandwidth) ||