mirror of
https://github.com/f4exb/sdrangel.git
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371 lines
12 KiB
C++
371 lines
12 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 F4HKW //
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// for F4EXB / SDRAngel //
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// using LeanSDR Framework (C) 2016 F4DAV //
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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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#ifndef INCLUDE_DATVDEMOD_H
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#define INCLUDE_DATVDEMOD_H
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class DeviceSourceAPI;
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class ThreadedBasebandSampleSink;
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class DownChannelizer;
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#define rfFilterFftLength 1024
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//LeanSDR
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#include "leansdr/framework.h"
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#include "leansdr/generic.h"
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#include "leansdr/dsp.h"
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#include "leansdr/sdr.h"
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#include "leansdr/dvb.h"
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#include "leansdr/rs.h"
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#include "leansdr/filtergen.h"
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#include "leansdr/hdlc.h"
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#include "leansdr/iess.h"
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#include "datvconstellation.h"
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#include "datvvideoplayer.h"
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#include "datvideostream.h"
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#include "datvideorender.h"
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#include "datvdemodsettings.h"
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#include "channel/channelsinkapi.h"
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#include "dsp/basebandsamplesink.h"
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#include "dsp/devicesamplesource.h"
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#include "dsp/dspcommands.h"
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#include "dsp/downchannelizer.h"
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#include "dsp/fftfilt.h"
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#include "dsp/nco.h"
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#include "dsp/interpolator.h"
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#include "dsp/movingaverage.h"
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#include "dsp/agc.h"
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#include "audio/audiofifo.h"
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#include "util/message.h"
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#include "util/movingaverage.h"
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#include <QMutex>
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// enum DATVModulation { BPSK, QPSK, PSK8, APSK16, APSK32, APSK64E, QAM16, QAM64, QAM256 };
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// enum dvb_version { DVB_S, DVB_S2 };
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// enum dvb_sampler { SAMP_NEAREST, SAMP_LINEAR, SAMP_RRC };
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inline int decimation(float Fin, float Fout) { int d = Fin / Fout; return std::max(d, 1); }
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struct config
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{
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DATVDemodSettings::dvb_version standard;
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DATVDemodSettings::dvb_sampler sampler;
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int buf_factor; // Buffer sizing
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float Fs; // Sampling frequency (Hz)
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float Fderot; // Shift the signal (Hz). Note: Ftune is faster
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int anf; // Number of auto notch filters
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bool cnr; // Measure CNR
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unsigned int decim; // Decimation, 0=auto
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float Fm; // QPSK symbol rate (Hz)
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leansdr::cstln_lut<leansdr::eucl_ss, 256>::predef constellation;
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leansdr::code_rate fec;
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float Ftune; // Bias frequency for the QPSK demodulator (Hz)
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bool allow_drift;
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bool fastlock;
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bool viterbi;
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bool hard_metric;
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bool resample;
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float resample_rej; // Approx. filter rejection in dB
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int rrc_steps; // Discrete steps between symbols, 0=auto
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float rrc_rej; // Approx. RRC filter rejection in dB
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float rolloff; // Roll-off 0..1
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bool hdlc; // Expect HDLC frames instead of MPEG packets
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bool packetized; // Output frames with 16-bit BE length
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float Finfo; // Desired refresh rate on fd_info (Hz)
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config() :
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standard(DATVDemodSettings::DVB_S),
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sampler(DATVDemodSettings::SAMP_LINEAR),
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buf_factor(4),
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Fs(2.4e6),
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Fderot(0),
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anf(0),
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cnr(false),
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decim(0),
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Fm(2e6),
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constellation(leansdr::cstln_lut<leansdr::eucl_ss, 256>::QPSK),
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fec(leansdr::FEC12),
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Ftune(0),
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allow_drift(false),
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fastlock(true),
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viterbi(false),
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hard_metric(false),
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resample(false),
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resample_rej(10),
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rrc_steps(0),
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rrc_rej(10),
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rolloff(0.35),
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hdlc(false),
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packetized(false),
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Finfo(5)
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{
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}
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};
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class DATVDemod : public BasebandSampleSink, public ChannelSinkAPI
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{
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Q_OBJECT
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public:
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DATVDemod(DeviceSourceAPI *);
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~DATVDemod();
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virtual void destroy() { delete this; }
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virtual void getIdentifier(QString& id) { id = objectName(); }
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virtual void getTitle(QString& title) { title = objectName(); }
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virtual qint64 getCenterFrequency() const { return m_settings.m_centerFrequency; }
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virtual QByteArray serialize() const { return QByteArray(); }
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virtual bool deserialize(const QByteArray& data) { (void) data; return false; }
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virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool po);
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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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bool SetTVScreen(TVScreen *objScreen);
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DATVideostream * SetVideoRender(DATVideoRender *objScreen);
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bool audioActive();
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bool audioDecodeOK();
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bool videoActive();
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bool videoDecodeOK();
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bool PlayVideo(bool blnStartStop);
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void InitDATVParameters(
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int intMsps,
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int intRFBandwidth,
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int intCenterFrequency,
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DATVDemodSettings::dvb_version enmStandard,
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DATVDemodSettings::DATVModulation enmModulation,
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leansdr::code_rate enmFEC,
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int intSampleRate,
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int intSymbolRate,
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int intNotchFilters,
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bool blnAllowDrift,
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bool blnFastLock,
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DATVDemodSettings::dvb_sampler enmFilter,
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bool blnHardMetric,
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float fltRollOff,
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bool blnViterbi,
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int intEExcursion);
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void CleanUpDATVFramework(bool blnRelease);
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int GetSampleRate();
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void InitDATVFramework();
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double getMagSq() const { return m_objMagSqAverage; } //!< Beware this is scaled to 2^30
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static const QString m_channelIdURI;
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static const QString m_channelId;
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class MsgConfigureChannelizer : public Message
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{
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MESSAGE_CLASS_DECLARATION
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public:
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int getCenterFrequency() const { return m_centerFrequency; }
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static MsgConfigureChannelizer* create(int centerFrequency) {
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return new MsgConfigureChannelizer(centerFrequency);
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}
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private:
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int m_centerFrequency;
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MsgConfigureChannelizer(int centerFrequency) :
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Message(),
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m_centerFrequency(centerFrequency)
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{}
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};
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class MsgConfigureDATVDemod : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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const DATVDemodSettings& getSettings() const { return m_settings; }
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bool getForce() const { return m_force; }
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static MsgConfigureDATVDemod* create(const DATVDemodSettings& settings, bool force)
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{
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return new MsgConfigureDATVDemod(settings, force);
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}
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private:
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DATVDemodSettings m_settings;
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bool m_force;
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MsgConfigureDATVDemod(const DATVDemodSettings& 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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private:
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unsigned long m_lngExpectedReadIQ;
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long m_lngReadIQ;
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//************** LEANDBV Parameters **************
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unsigned long BUF_BASEBAND;
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unsigned long BUF_SYMBOLS;
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unsigned long BUF_BYTES;
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unsigned long BUF_MPEGBYTES;
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unsigned long BUF_PACKETS;
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unsigned long BUF_SLOW;
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//************** LEANDBV Scheduler ***************
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leansdr::scheduler * m_objScheduler;
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struct config m_objCfg;
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bool m_blnDVBInitialized;
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bool m_blnNeedConfigUpdate;
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//LeanSDR Pipe Buffer
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// INPUT
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leansdr::pipebuf<leansdr::cf32> *p_rawiq;
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leansdr::pipewriter<leansdr::cf32> *p_rawiq_writer;
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leansdr::pipebuf<leansdr::cf32> *p_preprocessed;
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// NOTCH FILTER
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leansdr::auto_notch<leansdr::f32> *r_auto_notch;
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leansdr::pipebuf<leansdr::cf32> *p_autonotched;
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// FREQUENCY CORRECTION : DEROTATOR
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leansdr::pipebuf<leansdr::cf32> *p_derot;
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leansdr::rotator<leansdr::f32> *r_derot;
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// CNR ESTIMATION
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leansdr::pipebuf<leansdr::f32> *p_cnr;
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leansdr::cnr_fft<leansdr::f32> *r_cnr;
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//FILTERING
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leansdr::fir_filter<leansdr::cf32,float> *r_resample;
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leansdr::pipebuf<leansdr::cf32> *p_resampled;
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float *coeffs;
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int ncoeffs;
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// OUTPUT PREPROCESSED DATA
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leansdr::sampler_interface<leansdr::f32> *sampler;
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float *coeffs_sampler;
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int ncoeffs_sampler;
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leansdr::pipebuf<leansdr::eucl_ss> *p_symbols;
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leansdr::pipebuf<leansdr::f32> *p_freq;
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leansdr::pipebuf<leansdr::f32> *p_ss;
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leansdr::pipebuf<leansdr::f32> *p_mer;
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leansdr::pipebuf<leansdr::cf32> *p_sampled;
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//DECIMATION
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leansdr::pipebuf<leansdr::cf32> *p_decimated;
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leansdr::decimator<leansdr::cf32> *p_decim;
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//PROCESSED DATA MONITORING
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leansdr::file_writer<leansdr::cf32> *r_ppout;
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//GENERIC CONSTELLATION RECEIVER
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leansdr::cstln_receiver<leansdr::f32, leansdr::eucl_ss> *m_objDemodulator;
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// DECONVOLUTION AND SYNCHRONIZATION
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leansdr::pipebuf<leansdr::u8> *p_bytes;
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leansdr::deconvol_sync_simple *r_deconv;
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leansdr::viterbi_sync *r;
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leansdr::pipebuf<leansdr::u8> *p_descrambled;
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leansdr::pipebuf<leansdr::u8> *p_frames;
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leansdr::etr192_descrambler * r_etr192_descrambler;
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leansdr::hdlc_sync *r_sync;
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leansdr::pipebuf<leansdr::u8> *p_mpegbytes;
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leansdr::pipebuf<int> *p_lock;
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leansdr::pipebuf<leansdr::u32> *p_locktime;
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leansdr::mpeg_sync<leansdr::u8, 0> *r_sync_mpeg;
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// DEINTERLEAVING
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leansdr::pipebuf<leansdr::rspacket<leansdr::u8> > *p_rspackets;
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leansdr::deinterleaver<leansdr::u8> *r_deinter;
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// REED-SOLOMON
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leansdr::pipebuf<int> *p_vbitcount;
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leansdr::pipebuf<int> *p_verrcount;
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leansdr::pipebuf<leansdr::tspacket> *p_rtspackets;
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leansdr::rs_decoder<leansdr::u8, 0> *r_rsdec;
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// BER ESTIMATION
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leansdr::pipebuf<float> *p_vber;
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leansdr::rate_estimator<float> *r_vber;
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// DERANDOMIZATION
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leansdr::pipebuf<leansdr::tspacket> *p_tspackets;
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leansdr::derandomizer *r_derand;
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//OUTPUT
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leansdr::file_writer<leansdr::tspacket> *r_stdout;
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leansdr::datvvideoplayer<leansdr::tspacket> *r_videoplayer;
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//CONSTELLATION
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leansdr::datvconstellation<leansdr::f32> *r_scope_symbols;
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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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//*************** DATV PARAMETERS ***************
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TVScreen *m_objRegisteredTVScreen;
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DATVideoRender *m_objRegisteredVideoRender;
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DATVideostream *m_objVideoStream;
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DATVideoRenderThread *m_objRenderThread;
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// Audio
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AudioFifo m_audioFifo;
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fftfilt * m_objRFFilter;
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NCO m_objNCO;
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bool m_blnInitialized;
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bool m_blnRenderingVideo;
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bool m_blnStartStopVideo;
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DATVDemodSettings::DATVModulation m_enmModulation;
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//DATVConfig m_objRunning;
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DATVDemodSettings m_settings;
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int m_sampleRate;
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MovingAverageUtil<double, double, 32> m_objMagSqAverage;
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QMutex m_objSettingsMutex;
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//void ApplySettings();
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void applySettings(const DATVDemodSettings& settings, bool force = false);
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void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);
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};
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#endif // INCLUDE_DATVDEMOD_H
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