From c5fc860be9557402bf6c9b315739fe249223d9db Mon Sep 17 00:00:00 2001 From: Hexameron Date: Wed, 21 May 2014 18:31:14 +0100 Subject: [PATCH] SSB Demodulation. --- plugins/channel/CMakeLists.txt | 1 + plugins/channel/ssb/CMakeLists.txt | 47 +++++++ plugins/channel/ssb/ssbdemod.cpp | 126 +++++++++++++++++++ plugins/channel/ssb/ssbdemod.h | 91 ++++++++++++++ plugins/channel/ssb/ssbdemodgui.cpp | 182 ++++++++++++++++++++++++++++ plugins/channel/ssb/ssbdemodgui.h | 60 +++++++++ plugins/channel/ssb/ssbdemodgui.ui | 172 ++++++++++++++++++++++++++ plugins/channel/ssb/ssbplugin.cpp | 53 ++++++++ plugins/channel/ssb/ssbplugin.h | 29 +++++ 9 files changed, 761 insertions(+) create mode 100644 plugins/channel/ssb/CMakeLists.txt create mode 100644 plugins/channel/ssb/ssbdemod.cpp create mode 100644 plugins/channel/ssb/ssbdemod.h create mode 100644 plugins/channel/ssb/ssbdemodgui.cpp create mode 100644 plugins/channel/ssb/ssbdemodgui.h create mode 100644 plugins/channel/ssb/ssbdemodgui.ui create mode 100644 plugins/channel/ssb/ssbplugin.cpp create mode 100644 plugins/channel/ssb/ssbplugin.h diff --git a/plugins/channel/CMakeLists.txt b/plugins/channel/CMakeLists.txt index e59574e1b..f12068de7 100644 --- a/plugins/channel/CMakeLists.txt +++ b/plugins/channel/CMakeLists.txt @@ -2,4 +2,5 @@ project(demod) add_subdirectory(nfm) add_subdirectory(tcpsrc) +add_subdirectory(ssb) #add_subdirectory(tetra) diff --git a/plugins/channel/ssb/CMakeLists.txt b/plugins/channel/ssb/CMakeLists.txt new file mode 100644 index 000000000..e50d4ae5a --- /dev/null +++ b/plugins/channel/ssb/CMakeLists.txt @@ -0,0 +1,47 @@ +project(ssb) + +set(ssb_SOURCES + ssbdemod.cpp + ssbdemodgui.cpp + ssbplugin.cpp +) + +set(ssb_HEADERS + ssbdemod.h + ssbdemodgui.h + ssbplugin.h +) + +set(ssb_FORMS + ssbdemodgui.ui +) + +include_directories( + . + ${CMAKE_CURRENT_BINARY_DIR} + ${CMAKE_SOURCE_DIR}/include + ${CMAKE_SOURCE_DIR}/include-gpl + ${OPENGL_INCLUDE_DIR} +) + +#include(${QT_USE_FILE}) +add_definitions(${QT_DEFINITIONS}) +add_definitions(-DQT_PLUGIN) +add_definitions(-DQT_SHARED) + +#qt5_wrap_cpp(ssb_HEADERS_MOC ${ssb_HEADERS}) +qt5_wrap_ui(ssb_FORMS_HEADERS ${ssb_FORMS}) + +add_library(demodssb SHARED + ${ssb_SOURCES} + ${ssb_HEADERS_MOC} + ${ssb_FORMS_HEADERS} +) + +target_link_libraries(demodssb + ${QT_LIBRARIES} + ${OPENGL_LIBRARIES} + sdrbase +) + +qt5_use_modules(demodssb Core Widgets OpenGL Multimedia) diff --git a/plugins/channel/ssb/ssbdemod.cpp b/plugins/channel/ssb/ssbdemod.cpp new file mode 100644 index 000000000..757b8be29 --- /dev/null +++ b/plugins/channel/ssb/ssbdemod.cpp @@ -0,0 +1,126 @@ +/////////////////////////////////////////////////////////////////////////////////// +// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany // +// written by Christian Daniel // +// (c) 2014 Modified by John Greb +// // +// 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 . // +/////////////////////////////////////////////////////////////////////////////////// + +#include +#include +#include "ssbdemod.h" +#include "audio/audiooutput.h" +#include "dsp/dspcommands.h" + +MESSAGE_CLASS_DEFINITION(SSBDemod::MsgConfigureSSBDemod, Message) + +SSBDemod::SSBDemod(AudioFifo* audioFifo, SampleSink* sampleSink) : + m_sampleSink(sampleSink), + m_audioFifo(audioFifo) +{ + m_Bandwidth = 10000; + m_volume = 2.0; + m_sampleRate = 96000; + m_frequency = 0; + m_nco.setFreq(m_frequency, m_sampleRate); + m_interpolator.create(16, m_sampleRate, 10000); + m_sampleDistanceRemain = (Real)m_sampleRate / 48000.0; + + m_lowpass.create(21, 48000, 10000); + + m_audioBuffer.resize(256); + m_audioBufferFill = 0; +} + +SSBDemod::~SSBDemod() +{ +} + +void SSBDemod::configure(MessageQueue* messageQueue, Real Bandwidth, Real volume) +{ + Message* cmd = MsgConfigureSSBDemod::create(Bandwidth, volume); + cmd->submit(messageQueue, this); +} + +void SSBDemod::feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool firstOfBurst) +{ + Complex ci; + bool consumed; + + for(SampleVector::const_iterator it = begin; it < end; ++it) { + Complex c(it->real() / 32768.0, it->imag() / 32768.0); + c *= m_nco.nextIQ(); + + consumed = false; + // could squelch audio if RTL_SDR samplerate is not being fully decimated. + if(m_interpolator.interpolate(&m_sampleDistanceRemain, c, &consumed, &ci)) { + Real demod = ci.imag() + ci.real(); + demod = m_lowpass.filter(demod * 0.5); + m_sampleBuffer.push_back(Sample(demod * 32768.0, demod * 32768.0)); + + demod *= m_volume; + qint16 sample = demod * 16384; + + m_audioBuffer[m_audioBufferFill].l = sample; + m_audioBuffer[m_audioBufferFill].r = sample; + ++m_audioBufferFill; + if(m_audioBufferFill >= m_audioBuffer.size()) { + uint res = m_audioFifo->write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1); + m_audioBufferFill = 0; + } + m_sampleDistanceRemain += (Real)m_sampleRate / 48000.0; + } + } + if(m_audioFifo->write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 0) != m_audioBufferFill) + ;//qDebug("lost samples"); + m_audioBufferFill = 0; + + if(m_sampleSink != NULL) + m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), firstOfBurst); + m_sampleBuffer.clear(); +} + +void SSBDemod::start() +{ +} + +void SSBDemod::stop() +{ +} + +bool SSBDemod::handleMessage(Message* cmd) +{ + if(DSPSignalNotification::match(cmd)) { + DSPSignalNotification* signal = (DSPSignalNotification*)cmd; + qDebug("%d samples/sec, %lld Hz offset", signal->getSampleRate(), signal->getFrequencyOffset()); + m_sampleRate = signal->getSampleRate(); + m_nco.setFreq(-signal->getFrequencyOffset(), m_sampleRate); + m_interpolator.create(16, m_sampleRate, m_Bandwidth); + m_sampleDistanceRemain = m_sampleRate / 48000.0; + cmd->completed(); + return true; + } else if(MsgConfigureSSBDemod::match(cmd)) { + MsgConfigureSSBDemod* cfg = (MsgConfigureSSBDemod*)cmd; + m_Bandwidth = cfg->getBandwidth(); + m_interpolator.create(16, m_sampleRate, m_Bandwidth); + m_lowpass.create(21, 48000, cfg->getBandwidth()); + m_volume = cfg->getVolume(); + m_volume *= m_volume * 0.1; + cmd->completed(); + return true; + } else { + if(m_sampleSink != NULL) + return m_sampleSink->handleMessage(cmd); + else return false; + } +} diff --git a/plugins/channel/ssb/ssbdemod.h b/plugins/channel/ssb/ssbdemod.h new file mode 100644 index 000000000..65230032c --- /dev/null +++ b/plugins/channel/ssb/ssbdemod.h @@ -0,0 +1,91 @@ +/////////////////////////////////////////////////////////////////////////////////// +// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany // +// written by Christian Daniel // +// // +// 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 . // +/////////////////////////////////////////////////////////////////////////////////// + +#ifndef INCLUDE_SSBDEMOD_H +#define INCLUDE_SSBDEMOD_H + +#include +#include "dsp/samplesink.h" +#include "dsp/nco.h" +#include "dsp/interpolator.h" +#include "dsp/lowpass.h" +#include "audio/audiofifo.h" +#include "util/message.h" + +class AudioFifo; + +class SSBDemod : public SampleSink { +public: + SSBDemod(AudioFifo* audioFifo, SampleSink* sampleSink); + ~SSBDemod(); + + void configure(MessageQueue* messageQueue, Real Bandwidth, Real volume); + + void feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool firstOfBurst); + void start(); + void stop(); + bool handleMessage(Message* cmd); + +private: + class MsgConfigureSSBDemod : public Message { + MESSAGE_CLASS_DECLARATION + + public: + Real getBandwidth() const { return m_Bandwidth; } + Real getVolume() const { return m_volume; } + + static MsgConfigureSSBDemod* create(Real Bandwidth, Real volume) + { + return new MsgConfigureSSBDemod(Bandwidth, volume); + } + + private: + Real m_Bandwidth; + Real m_volume; + + MsgConfigureSSBDemod(Real Bandwidth, Real volume) : + Message(), + m_Bandwidth(Bandwidth), + m_volume(volume) + { } + }; + + struct AudioSample { + qint16 l; + qint16 r; + }; + typedef std::vector AudioVector; + + Real m_Bandwidth; + Real m_volume; + int m_sampleRate; + int m_frequency; + + NCO m_nco; + Interpolator m_interpolator; + Real m_sampleDistanceRemain; + Lowpass m_lowpass; + + AudioVector m_audioBuffer; + uint m_audioBufferFill; + AudioFifo* m_audioFifo; + + SampleSink* m_sampleSink; + SampleVector m_sampleBuffer; +}; + +#endif // INCLUDE_SSBDEMOD_H diff --git a/plugins/channel/ssb/ssbdemodgui.cpp b/plugins/channel/ssb/ssbdemodgui.cpp new file mode 100644 index 000000000..b31cb42c7 --- /dev/null +++ b/plugins/channel/ssb/ssbdemodgui.cpp @@ -0,0 +1,182 @@ +#include +#include +#include "ssbdemodgui.h" +#include "ui_ssbdemodgui.h" +#include "ssbdemodgui.h" +#include "ui_ssbdemodgui.h" +#include "dsp/threadedsamplesink.h" +#include "dsp/channelizer.h" +#include "ssbdemod.h" +#include "dsp/spectrumvis.h" +#include "gui/glspectrum.h" +#include "plugin/pluginapi.h" +#include "util/simpleserializer.h" +#include "gui/basicchannelsettingswidget.h" + +SSBDemodGUI* SSBDemodGUI::create(PluginAPI* pluginAPI) +{ + SSBDemodGUI* gui = new SSBDemodGUI(pluginAPI); + return gui; +} + +void SSBDemodGUI::destroy() +{ + delete this; +} + +void SSBDemodGUI::setName(const QString& name) +{ + setObjectName(name); +} + +void SSBDemodGUI::resetToDefaults() +{ + ui->BW->setValue(3); + ui->volume->setValue(4); + applySettings(); +} + +QByteArray SSBDemodGUI::serialize() const +{ + SimpleSerializer s(1); + s.writeS32(1, m_channelMarker->getCenterFrequency()); + s.writeS32(2, ui->BW->value()); + s.writeS32(3, ui->volume->value()); + s.writeBlob(4, ui->spectrumGUI->serialize()); + s.writeU32(5, m_channelMarker->getColor().rgb()); + return s.final(); +} + +bool SSBDemodGUI::deserialize(const QByteArray& data) +{ + SimpleDeserializer d(data); + + if(!d.isValid()) { + resetToDefaults(); + return false; + } + + if(d.getVersion() == 1) { + QByteArray bytetmp; + quint32 u32tmp; + qint32 tmp; + d.readS32(1, &tmp, 0); + m_channelMarker->setCenterFrequency(tmp); + d.readS32(2, &tmp, 3); + ui->BW->setValue(tmp); + d.readS32(3, &tmp, 20); + ui->volume->setValue(tmp); + d.readBlob(4, &bytetmp); + ui->spectrumGUI->deserialize(bytetmp); + if(d.readU32(5, &u32tmp)) + m_channelMarker->setColor(u32tmp); + applySettings(); + return true; + } else { + resetToDefaults(); + return false; + } +} + +bool SSBDemodGUI::handleMessage(Message* message) +{ + return false; +} + +void SSBDemodGUI::viewChanged() +{ + applySettings(); +} + +void SSBDemodGUI::on_BW_valueChanged(int value) +{ + ui->BWText->setText(QString("%1 kHz").arg(value)); + m_channelMarker->setBandwidth(value * 1000); + applySettings(); +} + +void SSBDemodGUI::on_volume_valueChanged(int value) +{ + ui->volumeText->setText(QString("%1").arg(value / 10.0, 0, 'f', 1)); + applySettings(); +} + +void SSBDemodGUI::onWidgetRolled(QWidget* widget, bool rollDown) +{ + /* + if((widget == ui->spectrumContainer) && (m_ssbDemod != NULL)) + m_ssbDemod->setSpectrum(m_threadedSampleSink->getMessageQueue(), rollDown); + */ +} + +void SSBDemodGUI::onMenuDoubleClicked() +{ + if(!m_basicSettingsShown) { + m_basicSettingsShown = true; + BasicChannelSettingsWidget* bcsw = new BasicChannelSettingsWidget(m_channelMarker, this); + bcsw->show(); + } +} + +SSBDemodGUI::SSBDemodGUI(PluginAPI* pluginAPI, QWidget* parent) : + RollupWidget(parent), + ui(new Ui::SSBDemodGUI), + m_pluginAPI(pluginAPI), + m_basicSettingsShown(false) +{ + ui->setupUi(this); + setAttribute(Qt::WA_DeleteOnClose, true); + connect(this, SIGNAL(widgetRolled(QWidget*,bool)), this, SLOT(onWidgetRolled(QWidget*,bool))); + connect(this, SIGNAL(menuDoubleClickEvent()), this, SLOT(onMenuDoubleClicked())); + + m_audioFifo = new AudioFifo(4, 48000 / 4); + m_spectrumVis = new SpectrumVis(ui->glSpectrum); + m_ssbDemod = new SSBDemod(m_audioFifo, m_spectrumVis); + m_channelizer = new Channelizer(m_ssbDemod); + m_threadedSampleSink = new ThreadedSampleSink(m_channelizer); + m_pluginAPI->addAudioSource(m_audioFifo); + m_pluginAPI->addSampleSink(m_threadedSampleSink); + + ui->glSpectrum->setCenterFrequency(0); + ui->glSpectrum->setSampleRate(48000); + ui->glSpectrum->setDisplayWaterfall(true); + ui->glSpectrum->setDisplayMaxHold(true); + m_spectrumVis->configure(m_threadedSampleSink->getMessageQueue(), 64, 10, FFTWindow::BlackmanHarris); + + m_channelMarker = new ChannelMarker(this); + m_channelMarker->setColor(Qt::red); + m_channelMarker->setBandwidth(4000); + m_channelMarker->setCenterFrequency(0); + m_channelMarker->setVisible(true); + connect(m_channelMarker, SIGNAL(changed()), this, SLOT(viewChanged())); + m_pluginAPI->addChannelMarker(m_channelMarker); + + ui->spectrumGUI->setBuddies(m_threadedSampleSink->getMessageQueue(), m_spectrumVis, ui->glSpectrum); + + applySettings(); +} + +SSBDemodGUI::~SSBDemodGUI() +{ + m_pluginAPI->removeChannelInstance(this); + m_pluginAPI->removeAudioSource(m_audioFifo); + m_pluginAPI->removeSampleSink(m_threadedSampleSink); + delete m_threadedSampleSink; + delete m_channelizer; + delete m_ssbDemod; + delete m_spectrumVis; + delete m_audioFifo; + delete m_channelMarker; + delete ui; +} + +void SSBDemodGUI::applySettings() +{ + setTitleColor(m_channelMarker->getColor()); + m_channelizer->configure(m_threadedSampleSink->getMessageQueue(), + 48000, + m_channelMarker->getCenterFrequency()); + m_ssbDemod->configure(m_threadedSampleSink->getMessageQueue(), + ui->BW->value() * 1000.0, + ui->volume->value() / 10.0 ); +} diff --git a/plugins/channel/ssb/ssbdemodgui.h b/plugins/channel/ssb/ssbdemodgui.h new file mode 100644 index 000000000..58ac19126 --- /dev/null +++ b/plugins/channel/ssb/ssbdemodgui.h @@ -0,0 +1,60 @@ +#ifndef INCLUDE_SSBDEMODGUI_H +#define INCLUDE_SSBDEMODGUI_H + +#include "gui/rollupwidget.h" +#include "plugin/plugingui.h" + +class PluginAPI; +class ChannelMarker; + +class AudioFifo; +class ThreadedSampleSink; +class Channelizer; +class SSBDemod; +class SpectrumVis; + +namespace Ui { + class SSBDemodGUI; +} + +class SSBDemodGUI : public RollupWidget, public PluginGUI { + Q_OBJECT + +public: + static SSBDemodGUI* create(PluginAPI* pluginAPI); + void destroy(); + + void setName(const QString& name); + + void resetToDefaults(); + QByteArray serialize() const; + bool deserialize(const QByteArray& data); + + bool handleMessage(Message* message); + +private slots: + void viewChanged(); + void on_BW_valueChanged(int value); + void on_volume_valueChanged(int value); + void onWidgetRolled(QWidget* widget, bool rollDown); + void onMenuDoubleClicked(); + +private: + Ui::SSBDemodGUI* ui; + PluginAPI* m_pluginAPI; + ChannelMarker* m_channelMarker; + bool m_basicSettingsShown; + + AudioFifo* m_audioFifo; + ThreadedSampleSink* m_threadedSampleSink; + Channelizer* m_channelizer; + SSBDemod* m_ssbDemod; + SpectrumVis* m_spectrumVis; + + explicit SSBDemodGUI(PluginAPI* pluginAPI, QWidget* parent = NULL); + ~SSBDemodGUI(); + + void applySettings(); +}; + +#endif // INCLUDE_SSBDEMODGUI_H diff --git a/plugins/channel/ssb/ssbdemodgui.ui b/plugins/channel/ssb/ssbdemodgui.ui new file mode 100644 index 000000000..2dfed425b --- /dev/null +++ b/plugins/channel/ssb/ssbdemodgui.ui @@ -0,0 +1,172 @@ + + + SSBDemodGUI + + + + 0 + 0 + 302 + 410 + + + + SSB Demodulator + + + + + 35 + 35 + 242 + 96 + + + + Settings + + + + 2 + + + 3 + + + + + Bandwidth + + + + + + + 1 + + + 20 + + + 1 + + + 3 + + + Qt::Horizontal + + + + + + + + 50 + 0 + + + + 3 kHz + + + Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter + + + + + + + Volume + + + + + + + 100 + + + 20 + + + Qt::Horizontal + + + + + + + + 50 + 0 + + + + 2.0 + + + Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter + + + + + + + + + 40 + 140 + 218 + 184 + + + + Channel Spectrum + + + + 2 + + + 3 + + + + + + 200 + 150 + + + + + + + + + + + + + GLSpectrum + QWidget +
gui/glspectrum.h
+ 1 + + + GLSpectrumGUI + QWidget +
gui/glspectrumgui.h
+ 1 + + + RollupWidget + QWidget +
gui/rollupwidget.h
+ 1 + + + + + diff --git a/plugins/channel/ssb/ssbplugin.cpp b/plugins/channel/ssb/ssbplugin.cpp new file mode 100644 index 000000000..1b51b76c8 --- /dev/null +++ b/plugins/channel/ssb/ssbplugin.cpp @@ -0,0 +1,53 @@ +#include +#include +#include "plugin/pluginapi.h" +#include "ssbplugin.h" +#include "ssbdemodgui.h" + +const PluginDescriptor SSBPlugin::m_pluginDescriptor = { + QString("SSB Demodulator"), + QString("---"), + QString("(c) maintech GmbH (rewritten by John Greb)"), + QString("http://www.maintech.de"), + true, + QString("http://www.maintech.de") +}; + +SSBPlugin::SSBPlugin(QObject* parent) : + QObject(parent) +{ +} + +const PluginDescriptor& SSBPlugin::getPluginDescriptor() const +{ + return m_pluginDescriptor; +} + +void SSBPlugin::initPlugin(PluginAPI* pluginAPI) +{ + m_pluginAPI = pluginAPI; + + // register demodulator + QAction* action = new QAction(tr("&SSB Demodulator"), this); + connect(action, SIGNAL(triggered()), this, SLOT(createInstanceSSB())); + m_pluginAPI->registerChannel("de.maintech.sdrangelove.channel.ssb", this, action); +} + +PluginGUI* SSBPlugin::createChannel(const QString& channelName) +{ + if(channelName == "de.maintech.sdrangelove.channel.ssb") { + SSBDemodGUI* gui = SSBDemodGUI::create(m_pluginAPI); + m_pluginAPI->registerChannelInstance("de.maintech.sdrangelove.channel.ssb", gui); + m_pluginAPI->addChannelRollup(gui); + return gui; + } else { + return NULL; + } +} + +void SSBPlugin::createInstanceSSB() +{ + SSBDemodGUI* gui = SSBDemodGUI::create(m_pluginAPI); + m_pluginAPI->registerChannelInstance("de.maintech.sdrangelove.channel.ssb", gui); + m_pluginAPI->addChannelRollup(gui); +} diff --git a/plugins/channel/ssb/ssbplugin.h b/plugins/channel/ssb/ssbplugin.h new file mode 100644 index 000000000..7686d7f19 --- /dev/null +++ b/plugins/channel/ssb/ssbplugin.h @@ -0,0 +1,29 @@ +#ifndef INCLUDE_SSBPLUGIN_H +#define INCLUDE_SSBPLUGIN_H + +#include +#include "plugin/plugininterface.h" + +class SSBPlugin : public QObject, PluginInterface { + Q_OBJECT + Q_INTERFACES(PluginInterface) + Q_PLUGIN_METADATA(IID "de.maintech.sdrangelove.channel.ssb") + +public: + explicit SSBPlugin(QObject* parent = NULL); + + const PluginDescriptor& getPluginDescriptor() const; + void initPlugin(PluginAPI* pluginAPI); + + PluginGUI* createChannel(const QString& channelName); + +private: + static const PluginDescriptor m_pluginDescriptor; + + PluginAPI* m_pluginAPI; + +private slots: + void createInstanceSSB(); +}; + +#endif // INCLUDE_SSBPLUGIN_H