mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-16 13:21:50 -05:00
259 lines
8.6 KiB
C++
259 lines
8.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2017 Edouard Griffiths, F4EXB //
|
|
// //
|
|
// 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 //
|
|
// the Free Software Foundation as version 3 of the License, or //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "chanalyzerng.h"
|
|
|
|
#include <QTime>
|
|
#include <QDebug>
|
|
#include <stdio.h>
|
|
|
|
#include "device/devicesourceapi.h"
|
|
#include "audio/audiooutput.h"
|
|
#include "dsp/threadedbasebandsamplesink.h"
|
|
#include "dsp/downchannelizer.h"
|
|
|
|
MESSAGE_CLASS_DEFINITION(ChannelAnalyzerNG::MsgConfigureChannelAnalyzer, Message)
|
|
MESSAGE_CLASS_DEFINITION(ChannelAnalyzerNG::MsgConfigureChannelizer, Message)
|
|
MESSAGE_CLASS_DEFINITION(ChannelAnalyzerNG::MsgReportChannelSampleRateChanged, Message)
|
|
|
|
const QString ChannelAnalyzerNG::m_channelIdURI = "sdrangel.channel.chanalyzerng";
|
|
const QString ChannelAnalyzerNG::m_channelId = "ChannelAnalyzerNG";
|
|
|
|
ChannelAnalyzerNG::ChannelAnalyzerNG(DeviceSourceAPI *deviceAPI) :
|
|
ChannelSinkAPI(m_channelIdURI),
|
|
m_deviceAPI(deviceAPI),
|
|
m_sampleSink(0),
|
|
m_settingsMutex(QMutex::Recursive)
|
|
{
|
|
setObjectName(m_channelId);
|
|
|
|
m_undersampleCount = 0;
|
|
m_sum = 0;
|
|
m_usb = true;
|
|
m_magsq = 0;
|
|
m_useInterpolator = false;
|
|
m_interpolatorDistance = 1.0f;
|
|
m_interpolatorDistanceRemain = 0.0f;
|
|
SSBFilter = new fftfilt(m_config.m_LowCutoff / m_config.m_inputSampleRate, m_config.m_Bandwidth / m_config.m_inputSampleRate, ssbFftLen);
|
|
DSBFilter = new fftfilt(m_config.m_Bandwidth / m_config.m_inputSampleRate, 2*ssbFftLen);
|
|
|
|
apply(true);
|
|
|
|
m_channelizer = new DownChannelizer(this);
|
|
m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
|
|
m_deviceAPI->addThreadedSink(m_threadedChannelizer);
|
|
m_deviceAPI->addChannelAPI(this);
|
|
}
|
|
|
|
ChannelAnalyzerNG::~ChannelAnalyzerNG()
|
|
{
|
|
delete SSBFilter;
|
|
delete DSBFilter;
|
|
m_deviceAPI->removeChannelAPI(this);
|
|
m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
|
|
delete m_threadedChannelizer;
|
|
delete m_channelizer;
|
|
}
|
|
|
|
void ChannelAnalyzerNG::configure(MessageQueue* messageQueue,
|
|
int channelSampleRate,
|
|
Real Bandwidth,
|
|
Real LowCutoff,
|
|
int spanLog2,
|
|
bool ssb)
|
|
{
|
|
Message* cmd = MsgConfigureChannelAnalyzer::create(channelSampleRate, Bandwidth, LowCutoff, spanLog2, ssb);
|
|
messageQueue->push(cmd);
|
|
}
|
|
|
|
void ChannelAnalyzerNG::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly __attribute__((unused)))
|
|
{
|
|
fftfilt::cmplx *sideband = 0;
|
|
Complex ci;
|
|
|
|
m_settingsMutex.lock();
|
|
|
|
for(SampleVector::const_iterator it = begin; it < end; ++it)
|
|
{
|
|
Complex c(it->real(), it->imag());
|
|
c *= m_nco.nextIQ();
|
|
|
|
if (m_useInterpolator)
|
|
{
|
|
if (m_interpolator.decimate(&m_interpolatorDistanceRemain, c, &ci))
|
|
{
|
|
processOneSample(ci, sideband);
|
|
m_interpolatorDistanceRemain += m_interpolatorDistance;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
processOneSample(c, sideband);
|
|
}
|
|
}
|
|
|
|
if(m_sampleSink != 0)
|
|
{
|
|
m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), m_running.m_ssb); // m_ssb = positive only
|
|
}
|
|
|
|
m_sampleBuffer.clear();
|
|
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
void ChannelAnalyzerNG::start()
|
|
{
|
|
}
|
|
|
|
void ChannelAnalyzerNG::stop()
|
|
{
|
|
}
|
|
|
|
bool ChannelAnalyzerNG::handleMessage(const Message& cmd)
|
|
{
|
|
qDebug() << "ChannelAnalyzerNG::handleMessage: " << cmd.getIdentifier();
|
|
|
|
if (DownChannelizer::MsgChannelizerNotification::match(cmd))
|
|
{
|
|
DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
|
|
|
|
m_config.m_inputSampleRate = notif.getSampleRate();
|
|
m_config.m_frequency = notif.getFrequencyOffset();
|
|
|
|
qDebug() << "ChannelAnalyzerNG::handleMessage: MsgChannelizerNotification:"
|
|
<< " m_sampleRate: " << m_config.m_inputSampleRate
|
|
<< " frequencyOffset: " << m_config.m_frequency;
|
|
|
|
apply();
|
|
|
|
if (getMessageQueueToGUI())
|
|
{
|
|
MsgReportChannelSampleRateChanged *msg = MsgReportChannelSampleRateChanged::create();
|
|
getMessageQueueToGUI()->push(msg);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureChannelizer::match(cmd))
|
|
{
|
|
MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
|
|
m_channelizer->configure(m_channelizer->getInputMessageQueue(),
|
|
cfg.getSampleRate(),
|
|
cfg.getCenterFrequency());
|
|
return true;
|
|
}
|
|
else if (MsgConfigureChannelAnalyzer::match(cmd))
|
|
{
|
|
MsgConfigureChannelAnalyzer& cfg = (MsgConfigureChannelAnalyzer&) cmd;
|
|
|
|
m_config.m_channelSampleRate = cfg.getChannelSampleRate();
|
|
m_config.m_Bandwidth = cfg.getBandwidth();
|
|
m_config.m_LowCutoff = cfg.getLoCutoff();
|
|
m_config.m_spanLog2 = cfg.getSpanLog2();
|
|
m_config.m_ssb = cfg.getSSB();
|
|
|
|
qDebug() << "ChannelAnalyzerNG::handleMessage: MsgConfigureChannelAnalyzer:"
|
|
<< " m_channelSampleRate: " << m_config.m_channelSampleRate
|
|
<< " m_Bandwidth: " << m_config.m_Bandwidth
|
|
<< " m_LowCutoff: " << m_config.m_LowCutoff
|
|
<< " m_spanLog2: " << m_config.m_spanLog2
|
|
<< " m_ssb: " << m_config.m_ssb;
|
|
|
|
apply();
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
if (m_sampleSink != 0)
|
|
{
|
|
return m_sampleSink->handleMessage(cmd);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void ChannelAnalyzerNG::apply(bool force)
|
|
{
|
|
if ((m_running.m_frequency != m_config.m_frequency) ||
|
|
(m_running.m_inputSampleRate != m_config.m_inputSampleRate) ||
|
|
force)
|
|
{
|
|
m_nco.setFreq(-m_config.m_frequency, m_config.m_inputSampleRate);
|
|
}
|
|
|
|
if ((m_running.m_inputSampleRate != m_config.m_inputSampleRate) ||
|
|
(m_running.m_channelSampleRate != m_config.m_channelSampleRate) ||
|
|
force)
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_interpolator.create(16, m_config.m_inputSampleRate, m_config.m_inputSampleRate / 2.2);
|
|
m_interpolatorDistanceRemain = 0.0f;
|
|
m_interpolatorDistance = (Real) m_config.m_inputSampleRate / (Real) m_config.m_channelSampleRate;
|
|
m_useInterpolator = (m_config.m_inputSampleRate != m_config.m_channelSampleRate); // optim
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if ((m_running.m_channelSampleRate != m_config.m_channelSampleRate) ||
|
|
(m_running.m_Bandwidth != m_config.m_Bandwidth) ||
|
|
(m_running.m_LowCutoff != m_config.m_LowCutoff) ||
|
|
force)
|
|
{
|
|
float bandwidth = m_config.m_Bandwidth;
|
|
float lowCutoff = m_config.m_LowCutoff;
|
|
|
|
if (bandwidth < 0)
|
|
{
|
|
bandwidth = -bandwidth;
|
|
lowCutoff = -lowCutoff;
|
|
m_usb = false;
|
|
}
|
|
else
|
|
{
|
|
m_usb = true;
|
|
}
|
|
|
|
if (bandwidth < 100.0f)
|
|
{
|
|
bandwidth = 100.0f;
|
|
lowCutoff = 0;
|
|
}
|
|
|
|
m_settingsMutex.lock();
|
|
|
|
SSBFilter->create_filter(lowCutoff / m_config.m_channelSampleRate, bandwidth / m_config.m_channelSampleRate);
|
|
DSBFilter->create_dsb_filter(bandwidth / m_config.m_channelSampleRate);
|
|
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
m_running.m_frequency = m_config.m_frequency;
|
|
m_running.m_channelSampleRate = m_config.m_channelSampleRate;
|
|
m_running.m_inputSampleRate = m_config.m_inputSampleRate;
|
|
m_running.m_Bandwidth = m_config.m_Bandwidth;
|
|
m_running.m_LowCutoff = m_config.m_LowCutoff;
|
|
|
|
//m_settingsMutex.lock();
|
|
m_running.m_spanLog2 = m_config.m_spanLog2;
|
|
m_running.m_ssb = m_config.m_ssb;
|
|
//m_settingsMutex.unlock();
|
|
}
|