mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-23 08:28:36 -05:00
415 lines
12 KiB
C++
415 lines
12 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 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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#ifndef INCLUDE_FREEDVDEMOD_H
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#define INCLUDE_FREEDVDEMOD_H
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#include <vector>
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#include <QMutex>
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#include <QNetworkRequest>
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#include "dsp/basebandsamplesink.h"
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#include "channel/channelsinkapi.h"
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#include "dsp/ncof.h"
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#include "dsp/interpolator.h"
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#include "dsp/fftfilt.h"
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#include "dsp/agc.h"
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#include "audio/audiofifo.h"
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#include "audio/audioresampler.h"
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#include "util/message.h"
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#include "util/doublebufferfifo.h"
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#include "freedvdemodsettings.h"
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#define ssbFftLen 1024
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#define agcTarget 3276.8 // -10 dB amplitude => -20 dB power: center of normal signal
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class QNetworkAccessManager;
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class QNetworkReply;
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class DeviceSourceAPI;
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class ThreadedBasebandSampleSink;
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class DownChannelizer;
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struct freedv;
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class FreeDVDemod : public BasebandSampleSink, public ChannelSinkAPI {
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Q_OBJECT
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public:
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class MsgConfigureFreeDVDemod : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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const FreeDVDemodSettings& getSettings() const { return m_settings; }
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bool getForce() const { return m_force; }
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static MsgConfigureFreeDVDemod* create(const FreeDVDemodSettings& settings, bool force)
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{
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return new MsgConfigureFreeDVDemod(settings, force);
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}
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private:
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FreeDVDemodSettings m_settings;
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bool m_force;
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MsgConfigureFreeDVDemod(const FreeDVDemodSettings& settings, bool force) :
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Message(),
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m_settings(settings),
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m_force(force)
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{ }
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};
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class MsgResyncFreeDVDemod : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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static MsgResyncFreeDVDemod* create() {
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return new MsgResyncFreeDVDemod();
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}
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private:
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MsgResyncFreeDVDemod()
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{}
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};
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class MsgConfigureChannelizer : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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int getSampleRate() const { return m_sampleRate; }
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int getCenterFrequency() const { return m_centerFrequency; }
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static MsgConfigureChannelizer* create(int sampleRate, int centerFrequency)
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{
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return new MsgConfigureChannelizer(sampleRate, centerFrequency);
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}
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private:
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int m_sampleRate;
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int m_centerFrequency;
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MsgConfigureChannelizer(int sampleRate, int centerFrequency) :
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Message(),
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m_sampleRate(sampleRate),
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m_centerFrequency(centerFrequency)
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{ }
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};
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FreeDVDemod(DeviceSourceAPI *deviceAPI);
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virtual ~FreeDVDemod();
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virtual void destroy() { delete this; }
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void setSampleSink(BasebandSampleSink* sampleSink) { m_sampleSink = sampleSink; }
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void configure(MessageQueue* messageQueue,
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Real Bandwidth,
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Real LowCutoff,
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Real volume,
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int spanLog2,
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bool audioBinaural,
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bool audioFlipChannels,
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bool dsb,
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bool audioMute,
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bool agc,
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bool agcClamping,
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int agcTimeLog2,
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int agcPowerThreshold,
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int agcThresholdGate);
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virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly);
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virtual void start();
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virtual void stop();
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virtual bool handleMessage(const Message& cmd);
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virtual void getIdentifier(QString& id) { id = objectName(); }
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virtual void getTitle(QString& title) { title = m_settings.m_title; }
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virtual qint64 getCenterFrequency() const { return m_settings.m_inputFrequencyOffset; }
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virtual QByteArray serialize() const;
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virtual bool deserialize(const QByteArray& data);
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uint32_t getAudioSampleRate() const { return m_audioSampleRate; }
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uint32_t getModemSampleRate() const { return m_modemSampleRate; }
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double getMagSq() const { return m_magsq; }
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bool getAudioActive() const { return m_audioActive; }
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void getMagSqLevels(double& avg, double& peak, int& nbSamples)
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{
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if (m_magsqCount > 0)
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{
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m_magsq = m_magsqSum / m_magsqCount;
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m_magSqLevelStore.m_magsq = m_magsq;
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m_magSqLevelStore.m_magsqPeak = m_magsqPeak;
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}
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avg = m_magSqLevelStore.m_magsq;
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peak = m_magSqLevelStore.m_magsqPeak;
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nbSamples = m_magsqCount == 0 ? 1 : m_magsqCount;
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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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}
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void getSNRLevels(double& avg, double& peak, int& nbSamples);
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int getBER() const { return m_freeDVStats.m_ber; }
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float getFrequencyOffset() const { return m_freeDVStats.m_freqOffset; }
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bool isSync() const { return m_freeDVStats.m_sync; }
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virtual int webapiSettingsGet(
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SWGSDRangel::SWGChannelSettings& response,
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QString& errorMessage);
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virtual int 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);
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virtual int webapiReportGet(
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SWGSDRangel::SWGChannelReport& response,
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QString& errorMessage);
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static const QString m_channelIdURI;
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static const QString m_channelId;
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signals:
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/**
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* Level changed
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* \param rmsLevel RMS level in range 0.0 - 1.0
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* \param peakLevel Peak level in range 0.0 - 1.0
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* \param numSamples Number of audio samples analyzed
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*/
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void levelInChanged(qreal rmsLevel, qreal peakLevel, int numSamples);
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private:
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struct MagSqLevelsStore
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{
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MagSqLevelsStore() :
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m_magsq(1e-12),
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m_magsqPeak(1e-12)
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{}
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double m_magsq;
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double m_magsqPeak;
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};
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struct FreeDVStats
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{
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FreeDVStats();
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void init();
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void collect(struct freedv *freedv);
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bool m_sync;
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float m_snrEst;
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float m_clockOffset;
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float m_freqOffset;
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float m_syncMetric;
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int m_totalBitErrors;
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int m_lastTotalBitErrors;
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int m_ber; //!< estimated BER (b/s)
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uint32_t m_frameCount;
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uint32_t m_berFrameCount; //!< count of frames for BER estimation
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uint32_t m_fps; //!< frames per second
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};
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struct FreeDVSNR
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{
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FreeDVSNR();
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void accumulate(float snrdB);
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double m_sum;
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float m_peak;
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int m_n;
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bool m_reset;
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};
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struct LevelRMS
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{
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LevelRMS();
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void accumulate(float fsample);
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double m_sum;
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float m_peak;
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int m_n;
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bool m_reset;
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};
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class MsgConfigureFreeDVDemodPrivate : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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Real getBandwidth() const { return m_Bandwidth; }
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Real getLoCutoff() const { return m_LowCutoff; }
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Real getVolume() const { return m_volume; }
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int getSpanLog2() const { return m_spanLog2; }
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bool getAudioBinaural() const { return m_audioBinaural; }
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bool getAudioFlipChannels() const { return m_audioFlipChannels; }
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bool getDSB() const { return m_dsb; }
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bool getAudioMute() const { return m_audioMute; }
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bool getAGC() const { return m_agc; }
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bool getAGCClamping() const { return m_agcClamping; }
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int getAGCTimeLog2() const { return m_agcTimeLog2; }
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int getAGCPowerThershold() const { return m_agcPowerThreshold; }
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int getAGCThersholdGate() const { return m_agcThresholdGate; }
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static MsgConfigureFreeDVDemodPrivate* create(Real Bandwidth,
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Real LowCutoff,
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Real volume,
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int spanLog2,
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bool audioBinaural,
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bool audioFlipChannels,
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bool dsb,
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bool audioMute,
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bool agc,
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bool agcClamping,
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int agcTimeLog2,
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int agcPowerThreshold,
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int agcThresholdGate)
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{
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return new MsgConfigureFreeDVDemodPrivate(
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Bandwidth,
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LowCutoff,
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volume,
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spanLog2,
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audioBinaural,
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audioFlipChannels,
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dsb,
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audioMute,
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agc,
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agcClamping,
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agcTimeLog2,
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agcPowerThreshold,
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agcThresholdGate);
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}
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private:
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Real m_Bandwidth;
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Real m_LowCutoff;
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Real m_volume;
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int m_spanLog2;
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bool m_audioBinaural;
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bool m_audioFlipChannels;
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bool m_dsb;
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bool m_audioMute;
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bool m_agc;
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bool m_agcClamping;
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int m_agcTimeLog2;
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int m_agcPowerThreshold;
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int m_agcThresholdGate;
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MsgConfigureFreeDVDemodPrivate(Real Bandwidth,
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Real LowCutoff,
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Real volume,
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int spanLog2,
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bool audioBinaural,
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bool audioFlipChannels,
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bool dsb,
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bool audioMute,
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bool agc,
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bool agcClamping,
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int agcTimeLog2,
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int agcPowerThreshold,
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int agcThresholdGate) :
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Message(),
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m_Bandwidth(Bandwidth),
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m_LowCutoff(LowCutoff),
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m_volume(volume),
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m_spanLog2(spanLog2),
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m_audioBinaural(audioBinaural),
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m_audioFlipChannels(audioFlipChannels),
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m_dsb(dsb),
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m_audioMute(audioMute),
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m_agc(agc),
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m_agcClamping(agcClamping),
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m_agcTimeLog2(agcTimeLog2),
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m_agcPowerThreshold(agcPowerThreshold),
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m_agcThresholdGate(agcThresholdGate)
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{ }
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};
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DeviceSourceAPI *m_deviceAPI;
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ThreadedBasebandSampleSink* m_threadedChannelizer;
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DownChannelizer* m_channelizer;
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FreeDVDemodSettings m_settings;
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Real m_hiCutoff;
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Real m_lowCutoff;
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Real m_volume;
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int m_spanLog2;
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fftfilt::cmplx m_sum;
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int m_undersampleCount;
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int m_inputSampleRate;
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uint32_t m_modemSampleRate;
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uint32_t m_speechSampleRate;
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uint32_t m_audioSampleRate;
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int m_inputFrequencyOffset;
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bool m_audioMute;
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double m_magsq;
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double m_magsqSum;
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double m_magsqPeak;
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int m_magsqCount;
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MagSqLevelsStore m_magSqLevelStore;
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SimpleAGC<4800> m_simpleAGC;
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bool m_agcActive;
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DoubleBufferFIFO<fftfilt::cmplx> m_squelchDelayLine;
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bool m_audioActive; //!< True if an audio signal is produced (no AGC or AGC and above threshold)
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NCOF m_nco;
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Interpolator m_interpolator;
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Real m_interpolatorDistance;
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Real m_interpolatorDistanceRemain;
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fftfilt* SSBFilter;
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BasebandSampleSink* m_sampleSink;
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SampleVector m_sampleBuffer;
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AudioVector m_audioBuffer;
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uint m_audioBufferFill;
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AudioFifo m_audioFifo;
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QNetworkAccessManager *m_networkManager;
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QNetworkRequest m_networkRequest;
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struct freedv *m_freeDV;
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int m_nSpeechSamples;
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int m_nMaxModemSamples;
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int m_nin;
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int m_iSpeech;
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int m_iModem;
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int16_t *m_speechOut;
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int16_t *m_modIn;
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AudioResampler m_audioResampler;
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FreeDVStats m_freeDVStats;
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FreeDVSNR m_freeDVSNR;
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LevelRMS m_levelIn;
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int m_levelInNbSamples;
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QMutex m_settingsMutex;
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void pushSampleToDV(int16_t sample);
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void pushSampleToAudio(int16_t sample);
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void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);
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void applySettings(const FreeDVDemodSettings& settings, bool force = false);
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void applyAudioSampleRate(int sampleRate);
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void applyFreeDVMode(FreeDVDemodSettings::FreeDVMode mode);
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void webapiFormatChannelSettings(SWGSDRangel::SWGChannelSettings& response, const FreeDVDemodSettings& settings);
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void webapiFormatChannelReport(SWGSDRangel::SWGChannelReport& response);
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void webapiReverseSendSettings(QList<QString>& channelSettingsKeys, const FreeDVDemodSettings& settings, bool force);
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private slots:
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void networkManagerFinished(QNetworkReply *reply);
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};
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#endif // INCLUDE_FREEDVDEMOD_H
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