mirror of
https://github.com/f4exb/sdrangel.git
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97f55be6e9
Add support for animated 3D models. Downloaded zipped airplane database as 1/4 of the size. Add table context menu. Add airline and country images to text bubbles on maps. Fix calculation of ground speed when on surface. Fix position calculation when aircraft transistions from surface to air. Fix altitude calculation when Q-bit is set. Speed up processing of large log files. Add new airline logos.
131 lines
5.2 KiB
C++
131 lines
5.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 Edouard Griffiths, F4EXB //
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// Copyright (C) 2020 Jon Beniston, M7RCE //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_ADSBDEMODSINK_H
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#define INCLUDE_ADSBDEMODSINK_H
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#define BOOST_CHRONO_HEADER_ONLY
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#include <boost/chrono/chrono.hpp>
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#include "dsp/channelsamplesink.h"
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#include "dsp/nco.h"
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#include "dsp/interpolator.h"
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#include "util/movingaverage.h"
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#include "adsbdemodsettings.h"
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#include "adsbdemodstats.h"
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#include "adsbdemodsinkworker.h"
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class ADSBDemodSink : public ChannelSampleSink {
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public:
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ADSBDemodSink();
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~ADSBDemodSink();
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virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end);
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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 applyChannelSettings(int channelSampleRate, int channelFrequencyOffset, bool force = false);
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void applySettings(const ADSBDemodSettings& settings, bool force = false);
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void setMessageQueueToGUI(MessageQueue *messageQueue) { m_messageQueueToGUI = messageQueue; }
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void setMessageQueueToWorker(MessageQueue *messageQueue) { m_messageQueueToWorker = messageQueue; }
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void startWorker();
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void stopWorker();
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private:
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friend ADSBDemodSinkWorker;
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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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int m_channelSampleRate;
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int m_channelFrequencyOffset;
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ADSBDemodSettings m_settings;
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NCO 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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boost::chrono::steady_clock::time_point m_startPoint;
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double m_feedTime; //!< Time spent in feed()
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// Triple buffering for sharing sample data between two threads
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// Top area of each buffer is not used by writer, as it's used by the reader
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// for copying the last few samples of the previous buffer, so it can
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// be processed contiguously
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const int m_buffers = 3;
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const int m_bufferSize = 200000;
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Real *m_sampleBuffer[3]; //!< Each buffer is m_bufferSize samples
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QSemaphore m_bufferWrite[3]; //!< Sempahore to control write access to the buffers
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QSemaphore m_bufferRead[3]; //!< Sempahore to control read access from the buffers
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QDateTime m_bufferFirstSampleDateTime[3]; //!< Time for first sample in the buffer
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bool m_bufferDateTimeValid[3];
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ADSBDemodSinkWorker m_worker; //!< Worker thread that does the actual demodulation
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int m_writeBuffer; //!< Which of the 3 buffers we're writing in to
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int m_writeIdx; //!< Index to to current write buffer
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// These values are derived from samplesPerBit
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int m_samplesPerFrame; //!< Including preamble
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int m_samplesPerChip;
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double m_magsq; //!< displayed averaged value
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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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MessageQueue *m_messageQueueToGUI;
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MessageQueue *m_messageQueueToWorker;
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void init(int samplesPerBit);
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Real inline complexMagSq(Complex& ci)
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{
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double magsqRaw = ci.real()*ci.real() + ci.imag()*ci.imag();
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return (Real)(magsqRaw / (SDR_RX_SCALED*SDR_RX_SCALED));
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}
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void processOneSample(Real magsq);
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MessageQueue *getMessageQueueToGUI() { return m_messageQueueToGUI; }
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MessageQueue *getMessageQueueToWorker() { return m_messageQueueToWorker; }
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};
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#endif // INCLUDE_ADSBDEMODSINK_H
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