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https://github.com/f4exb/sdrangel.git
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283 lines
10 KiB
C++
283 lines
10 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 Edouard Griffiths, F4EXB //
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// Copyright (C) 2020 Jon Beniston, M7RCE //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QDebug>
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#include "dsp/dspengine.h"
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#include "dsp/dspcommands.h"
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#include "dsp/downchannelizer.h"
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#include "vordemodbaseband.h"
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#include "vordemodreport.h"
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MESSAGE_CLASS_DEFINITION(VORDemodBaseband::MsgConfigureVORDemodBaseband, Message)
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VORDemodBaseband::VORDemodBaseband() :
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m_running(false),
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m_mutex(QMutex::Recursive),
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m_messageQueueToGUI(nullptr),
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m_basebandSampleRate(0)
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{
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qDebug("VORDemodBaseband::VORDemodBaseband");
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m_sampleFifo.setSize(SampleSinkFifo::getSizePolicy(48000));
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// FIXME: If we remove this audio stops working when this demod is closed
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DSPEngine::instance()->getAudioDeviceManager()->addAudioSink(&m_audioFifoBug, getInputMessageQueue());
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}
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VORDemodBaseband::~VORDemodBaseband()
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{
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m_inputMessageQueue.clear();
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for (int i = 0; i < m_sinks.size(); i++)
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{
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DSPEngine::instance()->getAudioDeviceManager()->removeAudioSink(m_sinks[i]->getAudioFifo());
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delete m_sinks[i];
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}
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m_sinks.clear();
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// FIXME: If we remove this audio stops working when this demod is closed
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DSPEngine::instance()->getAudioDeviceManager()->removeAudioSink(&m_audioFifoBug);
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for (int i = 0; i < m_channelizers.size(); i++)
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delete m_channelizers[i];
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m_channelizers.clear();
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}
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void VORDemodBaseband::reset()
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{
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QMutexLocker mutexLocker(&m_mutex);
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m_inputMessageQueue.clear();
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m_sampleFifo.reset();
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}
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void VORDemodBaseband::startWork()
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{
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QMutexLocker mutexLocker(&m_mutex);
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QObject::connect(
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&m_sampleFifo,
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&SampleSinkFifo::dataReady,
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this,
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&VORDemodBaseband::handleData,
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Qt::QueuedConnection
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);
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connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
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m_running = true;
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}
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void VORDemodBaseband::stopWork()
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{
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QMutexLocker mutexLocker(&m_mutex);
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disconnect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
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QObject::disconnect(
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&m_sampleFifo,
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&SampleSinkFifo::dataReady,
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this,
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&VORDemodBaseband::handleData
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);
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m_running = false;
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}
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void VORDemodBaseband::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end)
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{
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m_sampleFifo.write(begin, end);
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}
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void VORDemodBaseband::handleData()
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{
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QMutexLocker mutexLocker(&m_mutex);
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while ((m_sampleFifo.fill() > 0) && (m_inputMessageQueue.size() == 0))
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{
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SampleVector::iterator part1begin;
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SampleVector::iterator part1end;
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SampleVector::iterator part2begin;
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SampleVector::iterator part2end;
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std::size_t count = m_sampleFifo.readBegin(m_sampleFifo.fill(), &part1begin, &part1end, &part2begin, &part2end);
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// first part of FIFO data
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if (part1begin != part1end) {
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for (int i = 0; i < m_channelizers.size(); i++)
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m_channelizers[i]->feed(part1begin, part1end);
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}
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// second part of FIFO data (used when block wraps around)
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if(part2begin != part2end) {
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for (int i = 0; i < m_channelizers.size(); i++)
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m_channelizers[i]->feed(part2begin, part2end);
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}
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m_sampleFifo.readCommit((unsigned int) count);
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}
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}
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void VORDemodBaseband::handleInputMessages()
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{
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Message* message;
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while ((message = m_inputMessageQueue.pop()) != nullptr)
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{
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if (handleMessage(*message)) {
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delete message;
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}
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}
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}
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bool VORDemodBaseband::handleMessage(const Message& cmd)
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{
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if (MsgConfigureVORDemodBaseband::match(cmd))
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{
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QMutexLocker mutexLocker(&m_mutex);
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MsgConfigureVORDemodBaseband& cfg = (MsgConfigureVORDemodBaseband&) cmd;
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qDebug() << "VORDemodBaseband::handleMessage: MsgConfigureVORDemodBaseband";
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applySettings(cfg.getSettings(), cfg.getForce());
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return true;
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}
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else if (DSPSignalNotification::match(cmd))
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{
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QMutexLocker mutexLocker(&m_mutex);
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DSPSignalNotification& notif = (DSPSignalNotification&) cmd;
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qDebug() << "VORDemodBaseband::handleMessage: DSPSignalNotification: basebandSampleRate: " << notif.getSampleRate() << " centerFrequency: " << notif.getCenterFrequency();
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m_centerFrequency = notif.getCenterFrequency();
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setBasebandSampleRate(notif.getSampleRate());
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m_sampleFifo.setSize(SampleSinkFifo::getSizePolicy(m_basebandSampleRate));
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return true;
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}
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else
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{
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return false;
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}
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}
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// Calculate offset of VOR center frequency from sample source center frequency
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void VORDemodBaseband::calculateOffset(VORDemodSink *sink)
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{
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int frequencyOffset = sink->m_vorFrequencyHz - m_centerFrequency;
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bool outOfBand = std::abs(frequencyOffset)+VORDEMOD_CHANNEL_BANDWIDTH > (m_basebandSampleRate/2);
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if (m_messageQueueToGUI != nullptr)
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{
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VORDemodReport::MsgReportFreqOffset *msg = VORDemodReport::MsgReportFreqOffset::create(sink->m_subChannelId, frequencyOffset, outOfBand);
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m_messageQueueToGUI->push(msg);
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}
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sink->m_frequencyOffset = frequencyOffset;
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sink->m_outOfBand = outOfBand;
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}
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void VORDemodBaseband::applySettings(const VORDemodSettings& settings, bool force)
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{
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// Remove sub-channels no longer needed
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for (int i = 0; i < m_sinks.size(); i++)
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{
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if (!settings.m_subChannelSettings.contains(m_sinks[i]->m_subChannelId))
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{
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qDebug() << "VORDemodBaseband::applySettings: Removing sink " << m_sinks[i]->m_subChannelId;
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VORDemodSink *sink = m_sinks[i];
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DSPEngine::instance()->getAudioDeviceManager()->removeAudioSink(m_sinks[i]->getAudioFifo());
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m_sinks.removeAt(i);
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delete sink;
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DownChannelizer *channelizer = m_channelizers[i];
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m_channelizers.removeAt(i);
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delete channelizer;
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}
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}
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// Add new sub channels
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QHash<int, VORDemodSubChannelSettings *>::const_iterator itr = settings.m_subChannelSettings.begin();
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while (itr != settings.m_subChannelSettings.end())
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{
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VORDemodSubChannelSettings *subChannelSettings = itr.value();
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int j;
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for (j = 0; j < m_sinks.size(); j++)
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{
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if (subChannelSettings->m_id == m_sinks[j]->m_subChannelId)
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break;
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}
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if (j == m_sinks.size())
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{
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// Add a sub-channel sink
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qDebug() << "VORDemodBaseband::applySettings: Adding sink " << subChannelSettings->m_id;
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VORDemodSink *sink = new VORDemodSink(settings, subChannelSettings->m_id, m_messageQueueToGUI);
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DownChannelizer *channelizer = new DownChannelizer(sink);
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channelizer->setBasebandSampleRate(m_basebandSampleRate);
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DSPEngine::instance()->getAudioDeviceManager()->addAudioSink(sink->getAudioFifo(), getInputMessageQueue());
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sink->applyAudioSampleRate(DSPEngine::instance()->getAudioDeviceManager()->getOutputSampleRate());
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m_sinks.append(sink);
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m_channelizers.append(channelizer);
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calculateOffset(sink);
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channelizer->setChannelization(VORDEMOD_CHANNEL_SAMPLE_RATE, sink->m_frequencyOffset);
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sink->applyChannelSettings(channelizer->getChannelSampleRate(), channelizer->getChannelFrequencyOffset(), true);
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sink->applyAudioSampleRate(sink->getAudioSampleRate());
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}
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++itr;
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}
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if (force)
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{
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for (int i = 0; i < m_sinks.size(); i++)
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{
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m_channelizers[i]->setChannelization(VORDEMOD_CHANNEL_SAMPLE_RATE, m_sinks[i]->m_frequencyOffset);
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m_sinks[i]->applyChannelSettings(m_channelizers[i]->getChannelSampleRate(), m_channelizers[i]->getChannelFrequencyOffset());
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m_sinks[i]->applyAudioSampleRate(m_sinks[i]->getAudioSampleRate()); // reapply in case of channel sample rate change
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}
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}
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if ((settings.m_audioDeviceName != m_settings.m_audioDeviceName) || force)
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{
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AudioDeviceManager *audioDeviceManager = DSPEngine::instance()->getAudioDeviceManager();
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int audioDeviceIndex = audioDeviceManager->getOutputDeviceIndex(settings.m_audioDeviceName);
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for (int i = 0; i < m_sinks.size(); i++)
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{
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audioDeviceManager->removeAudioSink(m_sinks[i]->getAudioFifo());
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audioDeviceManager->addAudioSink(m_sinks[i]->getAudioFifo(), getInputMessageQueue(), audioDeviceIndex);
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int audioSampleRate = audioDeviceManager->getOutputSampleRate(audioDeviceIndex);
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if (m_sinks[i]->getAudioSampleRate() != audioSampleRate)
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{
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m_sinks[i]->applyAudioSampleRate(audioSampleRate);
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}
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}
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}
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for (int i = 0; i < m_sinks.size(); i++)
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m_sinks[i]->applySettings(settings, force);
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m_settings = settings;
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}
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void VORDemodBaseband::setBasebandSampleRate(int sampleRate)
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{
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m_basebandSampleRate = sampleRate;
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for (int i = 0; i < m_sinks.size(); i++)
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{
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m_channelizers[i]->setBasebandSampleRate(sampleRate);
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calculateOffset(m_sinks[i]);
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m_sinks[i]->applyChannelSettings(m_channelizers[i]->getChannelSampleRate(), m_channelizers[i]->getChannelFrequencyOffset());
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m_sinks[i]->applyAudioSampleRate(m_sinks[i]->getAudioSampleRate()); // reapply in case of channel sample rate change
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}
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}
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