sdrangel/plugins/channeltx/modais/aismodbaseband.cpp

210 wiersze
6.7 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019 Edouard Griffiths, F4EXB //
// Copyright (C) 2020 Jon Beniston, M7RCE //
// //
// 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 //
// (at your option) any later version. //
// //
// 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 <QDebug>
#include "dsp/upchannelizer.h"
#include "dsp/dspengine.h"
#include "dsp/dspcommands.h"
#include "aismodbaseband.h"
#include "aismod.h"
MESSAGE_CLASS_DEFINITION(AISModBaseband::MsgConfigureAISModBaseband, Message)
AISModBaseband::AISModBaseband() :
m_mutex(QMutex::Recursive)
{
m_sampleFifo.resize(SampleSourceFifo::getSizePolicy(48000));
m_channelizer = new UpChannelizer(&m_source);
m_source.setScopeSink(&m_scopeSink);
qDebug("AISModBaseband::AISModBaseband");
QObject::connect(
&m_sampleFifo,
&SampleSourceFifo::dataRead,
this,
&AISModBaseband::handleData,
Qt::QueuedConnection
);
connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
}
AISModBaseband::~AISModBaseband()
{
delete m_channelizer;
}
void AISModBaseband::reset()
{
QMutexLocker mutexLocker(&m_mutex);
m_sampleFifo.reset();
}
void AISModBaseband::setChannel(ChannelAPI *channel)
{
m_source.setChannel(channel);
}
void AISModBaseband::pull(const SampleVector::iterator& begin, unsigned int nbSamples)
{
unsigned int part1Begin, part1End, part2Begin, part2End;
m_sampleFifo.read(nbSamples, part1Begin, part1End, part2Begin, part2End);
SampleVector& data = m_sampleFifo.getData();
if (part1Begin != part1End)
{
std::copy(
data.begin() + part1Begin,
data.begin() + part1End,
begin
);
}
unsigned int shift = part1End - part1Begin;
if (part2Begin != part2End)
{
std::copy(
data.begin() + part2Begin,
data.begin() + part2End,
begin + shift
);
}
}
void AISModBaseband::handleData()
{
QMutexLocker mutexLocker(&m_mutex);
SampleVector& data = m_sampleFifo.getData();
unsigned int ipart1begin;
unsigned int ipart1end;
unsigned int ipart2begin;
unsigned int ipart2end;
qreal rmsLevel, peakLevel;
int numSamples;
unsigned int remainder = m_sampleFifo.remainder();
while ((remainder > 0) && (m_inputMessageQueue.size() == 0))
{
m_sampleFifo.write(remainder, ipart1begin, ipart1end, ipart2begin, ipart2end);
if (ipart1begin != ipart1end) { // first part of FIFO data
processFifo(data, ipart1begin, ipart1end);
}
if (ipart2begin != ipart2end) { // second part of FIFO data (used when block wraps around)
processFifo(data, ipart2begin, ipart2end);
}
remainder = m_sampleFifo.remainder();
}
m_source.getLevels(rmsLevel, peakLevel, numSamples);
emit levelChanged(rmsLevel, peakLevel, numSamples);
}
void AISModBaseband::processFifo(SampleVector& data, unsigned int iBegin, unsigned int iEnd)
{
m_channelizer->prefetch(iEnd - iBegin);
m_channelizer->pull(data.begin() + iBegin, iEnd - iBegin);
}
void AISModBaseband::handleInputMessages()
{
Message* message;
while ((message = m_inputMessageQueue.pop()) != nullptr)
{
if (handleMessage(*message)) {
delete message;
}
}
}
bool AISModBaseband::handleMessage(const Message& cmd)
{
if (MsgConfigureAISModBaseband::match(cmd))
{
QMutexLocker mutexLocker(&m_mutex);
MsgConfigureAISModBaseband& cfg = (MsgConfigureAISModBaseband&) cmd;
qDebug() << "AISModBaseband::handleMessage: MsgConfigureAISModBaseband";
applySettings(cfg.getSettings(), cfg.getForce());
return true;
}
else if (AISMod::MsgTx::match(cmd)) // immediate transmission of stored message
{
m_source.transmit();
return true;
}
else if (AISMod::MsgTXPacketBytes::match(cmd)) // This is packet from UDP with immediate transmission
{
AISMod::MsgTXPacketBytes& tx = (AISMod::MsgTXPacketBytes&) cmd;
m_source.addTXPacket(tx.m_data);
m_source.transmit();
return true;
}
else if (AISMod::MsgTXPacketData::match(cmd))
{
AISMod::MsgTXPacketData& tx = (AISMod::MsgTXPacketData&) cmd;
m_source.addTXPacket(tx.m_data);
m_source.transmit();
return true;
}
else if (DSPSignalNotification::match(cmd))
{
QMutexLocker mutexLocker(&m_mutex);
DSPSignalNotification& notif = (DSPSignalNotification&) cmd;
qDebug() << "AISModBaseband::handleMessage: DSPSignalNotification: basebandSampleRate: " << notif.getSampleRate();
m_sampleFifo.resize(SampleSourceFifo::getSizePolicy(notif.getSampleRate()));
m_channelizer->setBasebandSampleRate(notif.getSampleRate());
m_source.applyChannelSettings(m_channelizer->getChannelSampleRate(), m_channelizer->getChannelFrequencyOffset());
return true;
}
else
{
qDebug() << "AISModBaseband - Baseband got unknown message";
return false;
}
}
void AISModBaseband::applySettings(const AISModSettings& settings, bool force)
{
if ((settings.m_inputFrequencyOffset != m_settings.m_inputFrequencyOffset) || force)
{
m_channelizer->setChannelization(m_channelizer->getChannelSampleRate(), settings.m_inputFrequencyOffset);
m_source.applyChannelSettings(m_channelizer->getChannelSampleRate(), m_channelizer->getChannelFrequencyOffset());
}
m_source.applySettings(settings, force);
m_settings = settings;
}
int AISModBaseband::getChannelSampleRate() const
{
return m_channelizer->getChannelSampleRate();
}