示例#1
0
bool NFMDemod::handleMessage(Message* cmd)
{
	if(DSPSignalNotification::match(cmd)) {
		DSPSignalNotification* signal = (DSPSignalNotification*)cmd;
		qDebug("%d samples/sec, %lld Hz offset", signal->getSampleRate(), signal->getFrequencyOffset());
		m_sampleRate = signal->getSampleRate();
		m_nco.setFreq(-signal->getFrequencyOffset(), m_sampleRate);
		m_interpolator.create(16, m_sampleRate, m_rfBandwidth / 2.1);
		m_sampleDistanceRemain = m_sampleRate / 48000.0;
		m_squelchState = 0;
		cmd->completed();
		return true;
	} else if(MsgConfigureNFMDemod::match(cmd)) {
		MsgConfigureNFMDemod* cfg = (MsgConfigureNFMDemod*)cmd;
		m_rfBandwidth = cfg->getRFBandwidth();
		m_interpolator.create(16, m_sampleRate, m_rfBandwidth / 2.1);
		m_lowpass.create(21, 48000, cfg->getAFBandwidth());
		m_squelchLevel = pow(10.0, cfg->getSquelch() / 10.0);
		m_volume = cfg->getVolume();
		cmd->completed();
		return true;
	} else {
		if(m_sampleSink != NULL)
		   return m_sampleSink->handleMessage(cmd);
		else return false;
	}
}
示例#2
0
bool TCPSrc::handleMessage(Message* cmd)
{
	if(DSPSignalNotification::match(cmd)) {
		DSPSignalNotification* signal = (DSPSignalNotification*)cmd;
		qDebug("%d samples/sec, %lld Hz offset", signal->getSampleRate(), signal->getFrequencyOffset());
		m_inputBandwidth = signal->getTunerBandwidth();
		m_inputSampleRate = signal->getSampleRate();
		m_inputFreq = signal->getTunerFrequency();
		if (m_rig) {
			m_rig->setTunerSamples(m_inputBandwidth);
			m_rig->setTunerFreq(m_inputFreq);
		}
		m_nco.setFreq(-signal->getFrequencyOffset(), m_inputSampleRate);
		m_interpolator.create(16, m_inputSampleRate, m_rfBandwidth / 2.0);
		m_sampleDistanceRemain = m_inputSampleRate / m_outputSampleRate;
		cmd->completed();
		return true;
	} else if(MsgTCPSrcConfigure::match(cmd)) {
		MsgTCPSrcConfigure* cfg = (MsgTCPSrcConfigure*)cmd;
		m_sampleFormat = cfg->getSampleFormat();
		m_outputSampleRate = cfg->getOutputSampleRate();
		m_rfBandwidth = cfg->getRFBandwidth();
		if(cfg->getTCPPort() != m_tcpPort) {
			m_tcpPort = cfg->getTCPPort();
			if(m_tcpServer->isListening())
				m_tcpServer->close();
			m_tcpServer->listen(QHostAddress::Any, m_tcpPort);
		}
		m_boost = cfg->getBoost();
		m_interpolator.create(16, m_inputSampleRate, m_rfBandwidth / 2.0);
		m_sampleDistanceRemain = m_inputSampleRate / m_outputSampleRate;
		if (m_sampleFormat == FormatSSB)
			TCPFilter->create_filter(0.3 / 48.0, m_rfBandwidth / 2.0 / m_outputSampleRate);
		else
			TCPFilter->create_filter(0.0, m_rfBandwidth / 2.0 / m_outputSampleRate);
		cmd->completed();
		return true;
	} else if(MsgTCPSrcSpectrum::match(cmd)) {
		MsgTCPSrcSpectrum* spc = (MsgTCPSrcSpectrum*)cmd;
		m_spectrumEnabled = spc->getEnabled();
		cmd->completed();
		return true;
	} else {
		if(m_spectrum != NULL)
		   return m_spectrum->handleMessage(cmd);
		else return false;
	}
}
示例#3
0
bool WFMDemod::handleMessage(Message* cmd)
{
	if(DSPSignalNotification::match(cmd)) {
		DSPSignalNotification* signal = (DSPSignalNotification*)cmd;
		qDebug("%d samples/sec, %lld Hz offset", signal->getSampleRate(), signal->getFrequencyOffset());
		m_sampleRate = signal->getSampleRate();
		m_interpolator.create(16, m_sampleRate, m_afBandwidth);
		m_sampleDistanceRemain = m_sampleRate / 48000.0;
		cmd->completed();
		return true;
	} else if(MsgConfigureWFMDemod::match(cmd)) {
		MsgConfigureWFMDemod* cfg = (MsgConfigureWFMDemod*)cmd;
		m_afBandwidth = cfg->getAFBandwidth();
		m_interpolator.create(16, m_sampleRate, m_afBandwidth);
		m_volume = cfg->getVolume();
		cmd->completed();
		return true;
	} else {
		if(m_sampleSink != NULL)
		   return m_sampleSink->handleMessage(cmd);
		else return false;
	}
}