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FreeDV demodulator: set filters and channelizer depending on mode bandwidth requirements

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This commit is contained in:
f4exb 2019-02-25 01:47:41 +01:00
parent 4faa574faf
commit 5009f0a7a0
2 changed files with 51 additions and 31 deletions
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81
plugins/channelrx/demodfreedv/freedvdemod.cpp
View File

@ -360,45 +360,60 @@ void FreeDVDemod::applyAudioSampleRate(int sampleRate)
{
qDebug("FreeDVDemod::applyAudioSampleRate: %d", sampleRate);
MsgConfigureChannelizer* channelConfigMsg = MsgConfigureChannelizer::create(
sampleRate, m_settings.m_inputFrequencyOffset);
m_inputMessageQueue.push(channelConfigMsg);
m_settingsMutex.lock();
m_interpolator.create(16, m_inputSampleRate, m_hiCutoff * 1.5f, 2.0f);
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) m_inputSampleRate / (Real) sampleRate;
SSBFilter->create_filter(m_lowCutoff / (float) sampleRate, m_hiCutoff / (float) sampleRate);
int agcNbSamples = (sampleRate / 1000) * (1<<m_settings.m_agcTimeLog2);
int agcThresholdGate = (sampleRate / 1000) * m_settings.m_agcThresholdGate; // ms
if (m_agcNbSamples != agcNbSamples)
{
m_agc.resize(agcNbSamples, agcNbSamples/2, agcTarget);
m_agc.setStepDownDelay(agcNbSamples);
m_agcNbSamples = agcNbSamples;
}
if (m_agcThresholdGate != agcThresholdGate)
{
m_agc.setGate(agcThresholdGate);
m_agcThresholdGate = agcThresholdGate;
}
m_audioFifo.setSize(sampleRate);
m_settingsMutex.unlock();
m_audioSampleRate = sampleRate;
}
if (m_guiMessageQueue) // forward to GUI if any
void FreeDVDemod::applyFreeDVMode(FreeDVDemodSettings::FreeDVMode mode)
{
m_hiCutoff = FreeDVDemodSettings::getHiCutoff(mode);
m_lowCutoff = FreeDVDemodSettings::getLowCutoff(mode);
uint32_t modemSampleRate = FreeDVDemodSettings::getModSampleRate(mode);
m_settingsMutex.lock();
// baseband interpolator and filter
if (modemSampleRate != m_modemSampleRate)
{
DSPConfigureAudio *cfg = new DSPConfigureAudio(m_audioSampleRate);
m_guiMessageQueue->push(cfg);
MsgConfigureChannelizer* channelConfigMsg = MsgConfigureChannelizer::create(
modemSampleRate, m_settings.m_inputFrequencyOffset);
m_inputMessageQueue.push(channelConfigMsg);
m_interpolator.create(16, m_inputSampleRate, m_hiCutoff * 1.5f, 2.0f);
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) m_inputSampleRate / (Real) modemSampleRate;
SSBFilter->create_filter(m_lowCutoff / (float) modemSampleRate, m_hiCutoff / (float) modemSampleRate);
int agcNbSamples = (modemSampleRate / 1000) * (1<<m_settings.m_agcTimeLog2);
int agcThresholdGate = (modemSampleRate / 1000) * m_settings.m_agcThresholdGate; // ms
if (m_agcNbSamples != agcNbSamples)
{
m_agc.resize(agcNbSamples, agcNbSamples/2, agcTarget);
m_agc.setStepDownDelay(agcNbSamples);
m_agcNbSamples = agcNbSamples;
}
if (m_agcThresholdGate != agcThresholdGate)
{
m_agc.setGate(agcThresholdGate);
m_agcThresholdGate = agcThresholdGate;
}
m_modemSampleRate = modemSampleRate;
if (getMessageQueueToGUI())
{
DSPConfigureAudio *cfg = new DSPConfigureAudio(m_modemSampleRate);
getMessageQueueToGUI()->push(cfg);
}
}
m_settingsMutex.unlock();
}
void FreeDVDemod::applySettings(const FreeDVDemodSettings& settings, bool force)
@ -510,6 +525,10 @@ void FreeDVDemod::applySettings(const FreeDVDemodSettings& settings, bool force)
reverseAPIKeys.append("agc");
}
if ((settings.m_freeDVMode != m_settings.m_freeDVMode) || force) {
applyFreeDVMode(settings.m_freeDVMode);
}
m_spanLog2 = settings.m_spanLog2;
m_audioMute = settings.m_audioMute;
m_agcActive = settings.m_agc;

1
plugins/channelrx/demodfreedv/freedvdemod.h
View File

@ -319,6 +319,7 @@ private:
void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);
void applySettings(const FreeDVDemodSettings& settings, bool force = false);
void applyAudioSampleRate(int sampleRate);
void applyFreeDVMode(FreeDVDemodSettings::FreeDVMode mode);
void webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const FreeDVDemodSettings& settings);
void webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response);
void webapiReverseSendSettings(QList<QString>& channelSettingsKeys, const FreeDVDemodSettings& settings, bool force);