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HackRF Output: limit size of sample FIFO to limit delay

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This commit is contained in:
f4exb 2017-01-10 01:02:28 +01:00
parent e4852230ea
commit e405f151e0
3 changed files with 46 additions and 47 deletions
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75
plugins/samplesink/hackrfoutput/hackrfoutput.cpp
View File

@ -75,7 +75,7 @@ bool HackRFOutput::start(int device)
// qCritical("HackRFInput::start: failed to initiate HackRF library %s", hackrf_error_name(rc));
// }
m_sampleSourceFifo.resize(m_settings.m_devSampleRate/2); // 500ms long
m_sampleSourceFifo.resize(m_settings.m_devSampleRate/(1<<(m_settings.m_log2Interp <= 4 ? m_settings.m_log2Interp : 4)));
if (m_deviceAPI->getSourceBuddies().size() > 0)
{
@ -225,9 +225,9 @@ bool HackRFOutput::handleMessage(const Message& message)
}
}
void HackRFOutput::setCenterFrequency(quint64 freq_hz)
void HackRFOutput::setCenterFrequency(quint64 freq_hz, qint32 LOppmTenths)
{
qint64 df = ((qint64)freq_hz * m_settings.m_LOppmTenths) / 10000000LL;
qint64 df = ((qint64)freq_hz * LOppmTenths) / 10000000LL;
freq_hz += df;
hackrf_error rc = (hackrf_error) hackrf_set_freq(m_dev, static_cast<uint64_t>(freq_hz));
@ -251,53 +251,53 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
qDebug() << "HackRFOutput::applySettings";
if ((m_settings.m_devSampleRate != settings.m_devSampleRate) || force)
if ((m_settings.m_devSampleRate != settings.m_devSampleRate) || (m_settings.m_log2Interp != settings.m_log2Interp) || force)
{
m_settings.m_devSampleRate = settings.m_devSampleRate;
forwardChange = true;
// FIFO size:
// 1 s length up to interpolation by 16
// 2 s for interpolation by 32
m_sampleSourceFifo.resize(settings.m_devSampleRate/(1<<(settings.m_log2Interp <= 4 ? settings.m_log2Interp : 4)));
}
if ((m_settings.m_devSampleRate != settings.m_devSampleRate) || force)
{
if (m_dev != 0)
{
rc = (hackrf_error) hackrf_set_sample_rate_manual(m_dev, m_settings.m_devSampleRate, 1);
rc = (hackrf_error) hackrf_set_sample_rate_manual(m_dev, settings.m_devSampleRate, 1);
if (rc != HACKRF_SUCCESS)
{
qCritical("HackRFOutput::applySettings: could not set sample rate to %d S/s: %s",
m_settings.m_devSampleRate,
settings.m_devSampleRate,
hackrf_error_name(rc));
}
else
{
qDebug("HackRFOutput::applySettings: sample rate set to %d S/s",
m_settings.m_devSampleRate);
m_hackRFThread->setSamplerate(m_settings.m_devSampleRate);
settings.m_devSampleRate);
m_hackRFThread->setSamplerate(settings.m_devSampleRate);
}
}
}
if ((m_settings.m_log2Interp != settings.m_log2Interp) || force)
{
m_settings.m_log2Interp = settings.m_log2Interp;
forwardChange = true;
if(m_dev != 0)
if(m_hackRFThread != 0)
{
m_hackRFThread->setLog2Interpolation(m_settings.m_log2Interp);
qDebug() << "HackRFOutput: set interpolation to " << (1<<m_settings.m_log2Interp);
m_hackRFThread->setLog2Interpolation(settings.m_log2Interp);
qDebug() << "HackRFOutput: set interpolation to " << (1<<settings.m_log2Interp);
}
}
if (force || (m_settings.m_centerFrequency != settings.m_centerFrequency) ||
(m_settings.m_LOppmTenths != settings.m_LOppmTenths))
{
m_settings.m_centerFrequency = settings.m_centerFrequency;
m_settings.m_LOppmTenths = settings.m_LOppmTenths;
if (m_dev != 0)
{
setCenterFrequency(m_settings.m_centerFrequency);
qDebug() << "HackRFOutput::applySettings: center freq: " << m_settings.m_centerFrequency << " Hz";
setCenterFrequency(settings.m_centerFrequency, settings.m_LOppmTenths);
qDebug() << "HackRFOutput::applySettings: center freq: " << settings.m_centerFrequency << " Hz LOppm: " << settings.m_LOppmTenths;
}
forwardChange = true;
@ -305,11 +305,9 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
if ((m_settings.m_vgaGain != settings.m_vgaGain) || force)
{
m_settings.m_vgaGain = settings.m_vgaGain;
if (m_dev != 0)
{
rc = (hackrf_error) hackrf_set_txvga_gain(m_dev, m_settings.m_vgaGain);
rc = (hackrf_error) hackrf_set_txvga_gain(m_dev, settings.m_vgaGain);
if(rc != HACKRF_SUCCESS)
{
@ -317,18 +315,16 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
}
else
{
qDebug() << "HackRFOutput:applySettings: TxVGA gain set to " << m_settings.m_vgaGain;
qDebug() << "HackRFOutput:applySettings: TxVGA gain set to " << settings.m_vgaGain;
}
}
}
if ((m_settings.m_bandwidth != settings.m_bandwidth) || force)
{
m_settings.m_bandwidth = settings.m_bandwidth;
if (m_dev != 0)
{
uint32_t bw_index = hackrf_compute_baseband_filter_bw_round_down_lt(m_settings.m_bandwidth);
uint32_t bw_index = hackrf_compute_baseband_filter_bw_round_down_lt(settings.m_bandwidth);
rc = (hackrf_error) hackrf_set_baseband_filter_bandwidth(m_dev, bw_index);
if (rc != HACKRF_SUCCESS)
@ -337,18 +333,16 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
}
else
{
qDebug() << "HackRFInput:applySettings: Baseband BW filter set to " << m_settings.m_bandwidth << " Hz";
qDebug() << "HackRFInput:applySettings: Baseband BW filter set to " << settings.m_bandwidth << " Hz";
}
}
}
if ((m_settings.m_biasT != settings.m_biasT) || force)
{
m_settings.m_biasT = settings.m_biasT;
if (m_dev != 0)
{
rc = (hackrf_error) hackrf_set_antenna_enable(m_dev, (m_settings.m_biasT ? 1 : 0));
rc = (hackrf_error) hackrf_set_antenna_enable(m_dev, (settings.m_biasT ? 1 : 0));
if(rc != HACKRF_SUCCESS)
{
@ -356,18 +350,16 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
}
else
{
qDebug() << "HackRFInput:applySettings: bias tee set to " << m_settings.m_biasT;
qDebug() << "HackRFInput:applySettings: bias tee set to " << settings.m_biasT;
}
}
}
if ((m_settings.m_lnaExt != settings.m_lnaExt) || force)
{
m_settings.m_lnaExt = settings.m_lnaExt;
if (m_dev != 0)
{
rc = (hackrf_error) hackrf_set_amp_enable(m_dev, (m_settings.m_lnaExt ? 1 : 0));
rc = (hackrf_error) hackrf_set_amp_enable(m_dev, (settings.m_lnaExt ? 1 : 0));
if(rc != HACKRF_SUCCESS)
{
@ -375,11 +367,20 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
}
else
{
qDebug() << "HackRFInput:applySettings: extra LNA set to " << m_settings.m_lnaExt;
qDebug() << "HackRFInput:applySettings: extra LNA set to " << settings.m_lnaExt;
}
}
}
m_settings.m_devSampleRate = settings.m_devSampleRate;
m_settings.m_log2Interp = settings.m_log2Interp;
m_settings.m_centerFrequency = settings.m_centerFrequency;
m_settings.m_LOppmTenths = settings.m_LOppmTenths;
m_settings.m_vgaGain = settings.m_vgaGain;
m_settings.m_bandwidth = settings.m_bandwidth;
m_settings.m_biasT = settings.m_biasT;
m_settings.m_lnaExt = settings.m_lnaExt;
if (forwardChange)
{
int sampleRate = m_settings.m_devSampleRate/(1<<m_settings.m_log2Interp);

2
plugins/samplesink/hackrfoutput/hackrfoutput.h
View File

@ -84,7 +84,7 @@ public:
private:
bool applySettings(const HackRFOutputSettings& settings, bool force);
// hackrf_device *open_hackrf_from_sequence(int sequence);
void setCenterFrequency(quint64 freq);
void setCenterFrequency(quint64 freq_hz, qint32 LOppmTenths);
DeviceSinkAPI *m_deviceAPI;
QMutex m_mutex;

10
plugins/samplesink/hackrfoutput/hackrfoutputthread.cpp
View File

@ -39,13 +39,11 @@ HackRFOutputThread::~HackRFOutputThread()
void HackRFOutputThread::startWork()
{
//m_startWaitMutex.lock();
m_running = true;
m_startWaitMutex.lock();
start();
/*
while(!m_running)
m_startWaiter.wait(&m_startWaitMutex, 100);
m_startWaitMutex.unlock();*/
m_startWaitMutex.unlock();
}
void HackRFOutputThread::stopWork()
@ -69,7 +67,7 @@ void HackRFOutputThread::run()
{
hackrf_error rc;
//m_running = true;
m_running = true;
m_startWaiter.wakeAll();
rc = (hackrf_error) hackrf_start_tx(m_dev, tx_callback, this);
@ -97,7 +95,7 @@ void HackRFOutputThread::run()
qDebug("HackRFOutputThread::run: failed to stop HackRF Tx: %s", hackrf_error_name(rc));
}
//m_running = false;
m_running = false;
}
// Interpolate according to specified log2 (ex: log2=4 => interp=16)