mirror of https://github.com/f4exb/sdrangel.git
485 lines
17 KiB
C++
485 lines
17 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015 Edouard Griffiths, F4EXB. //
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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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// //
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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 "amdemod.h"
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#include <QTime>
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#include <QDebug>
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#include <stdio.h>
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#include <complex.h>
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#include "SWGChannelSettings.h"
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#include "SWGAMDemodSettings.h"
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#include "SWGChannelReport.h"
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#include "SWGAMDemodReport.h"
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#include "dsp/downchannelizer.h"
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#include "audio/audiooutput.h"
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#include "dsp/dspengine.h"
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#include "dsp/threadedbasebandsamplesink.h"
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#include "dsp/dspcommands.h"
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#include "device/devicesourceapi.h"
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#include "util/db.h"
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MESSAGE_CLASS_DEFINITION(AMDemod::MsgConfigureAMDemod, Message)
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MESSAGE_CLASS_DEFINITION(AMDemod::MsgConfigureChannelizer, Message)
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const QString AMDemod::m_channelIdURI = "de.maintech.sdrangelove.channel.am";
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const QString AMDemod::m_channelId = "AMDemod";
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const int AMDemod::m_udpBlockSize = 512;
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AMDemod::AMDemod(DeviceSourceAPI *deviceAPI) :
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ChannelSinkAPI(m_channelIdURI),
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m_deviceAPI(deviceAPI),
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m_inputSampleRate(48000),
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m_inputFrequencyOffset(0),
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m_running(false),
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m_squelchOpen(false),
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m_squelchDelayLine(9600),
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m_magsqSum(0.0f),
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m_magsqPeak(0.0f),
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m_magsqCount(0),
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m_volumeAGC(0.003),
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m_audioFifo(48000),
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m_settingsMutex(QMutex::Recursive)
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{
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setObjectName(m_channelId);
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m_audioBuffer.resize(1<<14);
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m_audioBufferFill = 0;
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m_magsq = 0.0;
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DSPEngine::instance()->getAudioDeviceManager()->addAudioSink(&m_audioFifo, getInputMessageQueue());
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m_audioSampleRate = DSPEngine::instance()->getAudioDeviceManager()->getOutputSampleRate();
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DSBFilter = new fftfilt((2.0f * m_settings.m_rfBandwidth) / m_audioSampleRate, 2 * 1024);
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SSBFilter = new fftfilt(0.0f, m_settings.m_rfBandwidth / m_audioSampleRate, 1024);
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applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
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applySettings(m_settings, true);
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m_channelizer = new DownChannelizer(this);
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m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
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m_deviceAPI->addThreadedSink(m_threadedChannelizer);
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m_deviceAPI->addChannelAPI(this);
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m_pllFilt.create(101, m_audioSampleRate, 500.0);
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m_pll.computeCoefficients(0.05, 0.707, 1000);
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m_syncAMBuffIndex = 0;
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}
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AMDemod::~AMDemod()
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{
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DSPEngine::instance()->getAudioDeviceManager()->removeAudioSink(&m_audioFifo);
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m_deviceAPI->removeChannelAPI(this);
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m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
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delete m_threadedChannelizer;
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delete m_channelizer;
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delete DSBFilter;
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delete SSBFilter;
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}
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void AMDemod::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool firstOfBurst __attribute__((unused)))
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{
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Complex ci;
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if (!m_running) {
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return;
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}
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m_settingsMutex.lock();
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for (SampleVector::const_iterator it = begin; it != end; ++it)
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{
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Complex c(it->real(), it->imag());
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c *= m_nco.nextIQ();
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if (m_interpolatorDistance < 1.0f) // interpolate
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{
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processOneSample(ci);
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while (m_interpolator.interpolate(&m_interpolatorDistanceRemain, c, &ci))
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{
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processOneSample(ci);
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}
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m_interpolatorDistanceRemain += m_interpolatorDistance;
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}
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else // decimate
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{
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if (m_interpolator.decimate(&m_interpolatorDistanceRemain, c, &ci))
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{
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processOneSample(ci);
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m_interpolatorDistanceRemain += m_interpolatorDistance;
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}
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}
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}
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if (m_audioBufferFill > 0)
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{
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uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 10);
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if (res != m_audioBufferFill)
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{
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qDebug("AMDemod::feed: %u/%u tail samples written", res, m_audioBufferFill);
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}
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m_audioBufferFill = 0;
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}
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m_settingsMutex.unlock();
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}
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void AMDemod::start()
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{
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qDebug("AMDemod::start");
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m_squelchCount = 0;
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m_audioFifo.clear();
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applyChannelSettings(m_inputSampleRate, m_inputFrequencyOffset, true);
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m_running = true;
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}
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void AMDemod::stop()
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{
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qDebug("AMDemod::stop");
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m_running = false;
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}
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bool AMDemod::handleMessage(const Message& cmd)
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{
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if (DownChannelizer::MsgChannelizerNotification::match(cmd))
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{
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DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
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qDebug() << "AMDemod::handleMessage: MsgChannelizerNotification:"
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<< " inputSampleRate: " << notif.getSampleRate()
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<< " inputFrequencyOffset: " << notif.getFrequencyOffset();
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applyChannelSettings(notif.getSampleRate(), notif.getFrequencyOffset());
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return true;
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}
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else if (MsgConfigureChannelizer::match(cmd))
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{
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MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
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qDebug() << "AMDemod::handleMessage: MsgConfigureChannelizer:"
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<< " sampleRate: " << cfg.getSampleRate()
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<< " inputFrequencyOffset: " << cfg.getCenterFrequency();
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m_channelizer->configure(m_channelizer->getInputMessageQueue(),
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cfg.getSampleRate(),
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cfg.getCenterFrequency());
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return true;
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}
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else if (MsgConfigureAMDemod::match(cmd))
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{
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MsgConfigureAMDemod& cfg = (MsgConfigureAMDemod&) cmd;
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qDebug() << "AMDemod::handleMessage: MsgConfigureAMDemod";
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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 (BasebandSampleSink::MsgThreadedSink::match(cmd))
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{
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BasebandSampleSink::MsgThreadedSink& cfg = (BasebandSampleSink::MsgThreadedSink&) cmd;
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const QThread *thread = cfg.getThread();
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qDebug("AMDemod::handleMessage: BasebandSampleSink::MsgThreadedSink: %p", thread);
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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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return true;
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}
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else if (DSPConfigureAudio::match(cmd))
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{
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DSPConfigureAudio& cfg = (DSPConfigureAudio&) cmd;
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uint32_t sampleRate = cfg.getSampleRate();
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qDebug() << "AMDemod::handleMessage: DSPConfigureAudio:"
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<< " sampleRate: " << sampleRate;
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if (sampleRate != m_audioSampleRate) {
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applyAudioSampleRate(sampleRate);
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}
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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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void AMDemod::applyAudioSampleRate(int sampleRate)
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{
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qDebug("AMDemod::applyAudioSampleRate: %d", sampleRate);
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MsgConfigureChannelizer* channelConfigMsg = MsgConfigureChannelizer::create(
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sampleRate, m_settings.m_inputFrequencyOffset);
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m_inputMessageQueue.push(channelConfigMsg);
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m_settingsMutex.lock();
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m_interpolator.create(16, m_inputSampleRate, m_settings.m_rfBandwidth / 2.2f);
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m_interpolatorDistanceRemain = 0;
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m_interpolatorDistance = (Real) m_inputSampleRate / (Real) sampleRate;
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m_bandpass.create(301, sampleRate, 300.0, m_settings.m_rfBandwidth / 2.0f);
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m_audioFifo.setSize(sampleRate);
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m_squelchDelayLine.resize(sampleRate/5);
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DSBFilter->create_dsb_filter((2.0f * m_settings.m_rfBandwidth) / (float) sampleRate);
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m_pllFilt.create(101, sampleRate, 500.0);
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if (m_settings.m_pll) {
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m_volumeAGC.resizeNew(sampleRate, 0.003);
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} else {
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m_volumeAGC.resizeNew(sampleRate/10, 0.003);
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}
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m_settingsMutex.unlock();
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m_audioSampleRate = sampleRate;
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}
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void AMDemod::applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force)
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{
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qDebug() << "AMDemod::applyChannelSettings:"
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<< " inputSampleRate: " << inputSampleRate
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<< " inputFrequencyOffset: " << inputFrequencyOffset;
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if ((m_inputFrequencyOffset != inputFrequencyOffset) ||
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(m_inputSampleRate != inputSampleRate) || force)
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{
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m_nco.setFreq(-inputFrequencyOffset, inputSampleRate);
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}
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if ((m_inputSampleRate != inputSampleRate) || force)
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{
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m_settingsMutex.lock();
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m_interpolator.create(16, inputSampleRate, m_settings.m_rfBandwidth / 2.2f);
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m_interpolatorDistanceRemain = 0;
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m_interpolatorDistance = (Real) inputSampleRate / (Real) m_audioSampleRate;
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m_settingsMutex.unlock();
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}
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m_inputSampleRate = inputSampleRate;
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m_inputFrequencyOffset = inputFrequencyOffset;
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}
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void AMDemod::applySettings(const AMDemodSettings& settings, bool force)
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{
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qDebug() << "AMDemod::applySettings:"
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<< " m_inputFrequencyOffset: " << settings.m_inputFrequencyOffset
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<< " m_rfBandwidth: " << settings.m_rfBandwidth
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<< " m_volume: " << settings.m_volume
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<< " m_squelch: " << settings.m_squelch
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<< " m_audioMute: " << settings.m_audioMute
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<< " m_bandpassEnable: " << settings.m_bandpassEnable
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<< " m_audioDeviceName: " << settings.m_audioDeviceName
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<< " m_pll: " << settings.m_pll
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<< " m_syncAMOperation: " << (int) settings.m_syncAMOperation
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<< " force: " << force;
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if((m_settings.m_rfBandwidth != settings.m_rfBandwidth) ||
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(m_settings.m_bandpassEnable != settings.m_bandpassEnable) || force)
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{
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m_settingsMutex.lock();
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m_interpolator.create(16, m_inputSampleRate, settings.m_rfBandwidth / 2.2f);
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m_interpolatorDistanceRemain = 0;
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m_interpolatorDistance = (Real) m_inputSampleRate / (Real) m_audioSampleRate;
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m_bandpass.create(301, m_audioSampleRate, 300.0, settings.m_rfBandwidth / 2.0f);
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DSBFilter->create_dsb_filter((2.0f * settings.m_rfBandwidth) / (float) m_audioSampleRate);
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m_settingsMutex.unlock();
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}
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if ((m_settings.m_squelch != settings.m_squelch) || force)
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{
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m_squelchLevel = pow(10.0, settings.m_squelch / 10.0);
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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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//qDebug("AMDemod::applySettings: audioDeviceName: %s audioDeviceIndex: %d", qPrintable(settings.m_audioDeviceName), audioDeviceIndex);
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audioDeviceManager->addAudioSink(&m_audioFifo, getInputMessageQueue(), audioDeviceIndex);
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uint32_t audioSampleRate = audioDeviceManager->getOutputSampleRate(audioDeviceIndex);
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if (m_audioSampleRate != audioSampleRate) {
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applyAudioSampleRate(audioSampleRate);
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}
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}
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if ((m_settings.m_pll != settings.m_pll) || force)
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{
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if (settings.m_pll)
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{
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m_volumeAGC.resizeNew(m_audioSampleRate/4, 0.003);
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m_syncAMBuffIndex = 0;
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}
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else
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{
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m_volumeAGC.resizeNew(m_audioSampleRate/10, 0.003);
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}
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}
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if ((m_settings.m_syncAMOperation != settings.m_syncAMOperation) || force) {
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m_syncAMBuffIndex = 0;
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}
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m_settings = settings;
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}
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QByteArray AMDemod::serialize() const
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{
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return m_settings.serialize();
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}
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bool AMDemod::deserialize(const QByteArray& data)
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{
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if (m_settings.deserialize(data))
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{
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MsgConfigureAMDemod *msg = MsgConfigureAMDemod::create(m_settings, true);
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m_inputMessageQueue.push(msg);
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return true;
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}
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else
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{
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m_settings.resetToDefaults();
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MsgConfigureAMDemod *msg = MsgConfigureAMDemod::create(m_settings, true);
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m_inputMessageQueue.push(msg);
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return false;
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}
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}
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int AMDemod::webapiSettingsGet(
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SWGSDRangel::SWGChannelSettings& response,
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QString& errorMessage __attribute__((unused)))
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{
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response.setAmDemodSettings(new SWGSDRangel::SWGAMDemodSettings());
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response.getAmDemodSettings()->init();
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webapiFormatChannelSettings(response, m_settings);
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return 200;
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}
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int AMDemod::webapiSettingsPutPatch(
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bool force,
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const QStringList& channelSettingsKeys,
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SWGSDRangel::SWGChannelSettings& response,
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QString& errorMessage __attribute__((unused)))
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{
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AMDemodSettings settings = m_settings;
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bool frequencyOffsetChanged = false;
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if (channelSettingsKeys.contains("audioMute")) {
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settings.m_audioMute = response.getAmDemodSettings()->getAudioMute() != 0;
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}
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if (channelSettingsKeys.contains("inputFrequencyOffset"))
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{
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settings.m_inputFrequencyOffset = response.getAmDemodSettings()->getInputFrequencyOffset();
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frequencyOffsetChanged = true;
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}
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if (channelSettingsKeys.contains("rfBandwidth")) {
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settings.m_rfBandwidth = response.getAmDemodSettings()->getRfBandwidth();
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}
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if (channelSettingsKeys.contains("rgbColor")) {
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settings.m_rgbColor = response.getAmDemodSettings()->getRgbColor();
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}
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if (channelSettingsKeys.contains("squelch")) {
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settings.m_squelch = response.getAmDemodSettings()->getSquelch();
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}
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if (channelSettingsKeys.contains("title")) {
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settings.m_title = *response.getAmDemodSettings()->getTitle();
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}
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if (channelSettingsKeys.contains("volume")) {
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settings.m_volume = response.getAmDemodSettings()->getVolume();
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}
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if (channelSettingsKeys.contains("bandpassEnable")) {
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settings.m_bandpassEnable = response.getAmDemodSettings()->getBandpassEnable() != 0;
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}
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if (channelSettingsKeys.contains("audioDeviceName")) {
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settings.m_audioDeviceName = *response.getAmDemodSettings()->getAudioDeviceName();
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}
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if (frequencyOffsetChanged)
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{
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MsgConfigureChannelizer* channelConfigMsg = MsgConfigureChannelizer::create(
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m_audioSampleRate, settings.m_inputFrequencyOffset);
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m_inputMessageQueue.push(channelConfigMsg);
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}
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MsgConfigureAMDemod *msg = MsgConfigureAMDemod::create(settings, force);
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m_inputMessageQueue.push(msg);
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qDebug("AMDemod::webapiSettingsPutPatch: forward to GUI: %p", m_guiMessageQueue);
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if (m_guiMessageQueue) // forward to GUI if any
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{
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MsgConfigureAMDemod *msgToGUI = MsgConfigureAMDemod::create(settings, force);
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m_guiMessageQueue->push(msgToGUI);
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}
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webapiFormatChannelSettings(response, settings);
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return 200;
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}
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int AMDemod::webapiReportGet(
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SWGSDRangel::SWGChannelReport& response,
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QString& errorMessage __attribute__((unused)))
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{
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response.setAmDemodReport(new SWGSDRangel::SWGAMDemodReport());
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response.getAmDemodReport()->init();
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webapiFormatChannelReport(response);
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return 200;
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}
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void AMDemod::webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const AMDemodSettings& settings)
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{
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response.getAmDemodSettings()->setAudioMute(settings.m_audioMute ? 1 : 0);
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response.getAmDemodSettings()->setInputFrequencyOffset(settings.m_inputFrequencyOffset);
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response.getAmDemodSettings()->setRfBandwidth(settings.m_rfBandwidth);
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response.getAmDemodSettings()->setRgbColor(settings.m_rgbColor);
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response.getAmDemodSettings()->setSquelch(settings.m_squelch);
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response.getAmDemodSettings()->setVolume(settings.m_volume);
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response.getAmDemodSettings()->setBandpassEnable(settings.m_bandpassEnable ? 1 : 0);
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if (response.getAmDemodSettings()->getTitle()) {
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*response.getAmDemodSettings()->getTitle() = settings.m_title;
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} else {
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response.getAmDemodSettings()->setTitle(new QString(settings.m_title));
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}
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if (response.getAmDemodSettings()->getAudioDeviceName()) {
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*response.getAmDemodSettings()->getAudioDeviceName() = settings.m_audioDeviceName;
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} else {
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response.getAmDemodSettings()->setAudioDeviceName(new QString(settings.m_audioDeviceName));
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}
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}
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void AMDemod::webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response)
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{
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double magsqAvg, magsqPeak;
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int nbMagsqSamples;
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getMagSqLevels(magsqAvg, magsqPeak, nbMagsqSamples);
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response.getAmDemodReport()->setChannelPowerDb(CalcDb::dbPower(magsqAvg));
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response.getAmDemodReport()->setSquelch(m_squelchOpen ? 1 : 0);
|
|
response.getAmDemodReport()->setAudioSampleRate(m_audioSampleRate);
|
|
response.getAmDemodReport()->setChannelSampleRate(m_inputSampleRate);
|
|
}
|
|
|