kopia lustrzana https://github.com/f4exb/sdrangel
128 wiersze
4.5 KiB
C++
128 wiersze
4.5 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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// (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 PLUGINS_CHANNELTX_FILESOURCE_FILESOURCESOURCE_H_
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#define PLUGINS_CHANNELTX_FILESOURCE_FILESOURCESOURCE_H_
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#include <ctime>
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#include <iostream>
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#include <fstream>
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#include <QObject>
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#include <QString>
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#include <QByteArray>
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#include <QTimer>
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#include "dsp/channelsamplesource.h"
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#include "util/movingaverage.h"
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#include "filesourcesettings.h"
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class MessageQueue;
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class FileSourceSource : public ChannelSampleSource {
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public:
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FileSourceSource();
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~FileSourceSource();
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virtual void pull(SampleVector::iterator begin, unsigned int nbSamples);
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virtual void pullOne(Sample& sample);
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virtual void prefetch(unsigned int nbSamples) { (void) nbSamples; }
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/** Set center frequency given in Hz */
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void setCenterFrequency(uint64_t centerFrequency) { m_centerFrequency = centerFrequency; }
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/** Set sample rate given in Hz */
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void setSampleRate(uint32_t sampleRate) { m_sampleRate = sampleRate; }
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quint64 getSamplesCount() const { return m_samplesCount; }
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double getMagSq() const { return m_magsq; }
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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 applySettings(const FileSourceSettings& settings, bool force = false);
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void setMessageQueueToGUI(MessageQueue *messageQueue) { m_guiMessageQueue = messageQueue; }
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void openFileStream(const QString& fileName);
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void seekFileStream(int seekMillis);
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void setRunning(bool running) { m_running = running; }
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uint32_t getFileSampleRate() const { return m_fileSampleRate; }
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quint64 getStartingTimeStamp() const { return m_startingTimeStamp; }
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quint64 getRecordLengthMuSec() const { return m_recordLengthMuSec; }
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quint32 getFileSampleSize() const { return m_sampleSize; }
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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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int m_channelSampleRate;
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int m_channelFrequencyOffset;
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FileSourceSettings m_settings;
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std::ifstream m_ifstream;
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QString m_fileName;
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quint32 m_sampleSize;
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quint64 m_centerFrequency;
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int64_t m_frequencyOffset;
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uint32_t m_fileSampleRate;
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quint64 m_samplesCount;
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uint32_t m_sampleRate;
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uint32_t m_deviceSampleRate;
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quint64 m_recordLengthMuSec; //!< record length in microseconds computed from file size
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quint64 m_startingTimeStamp;
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QTimer m_masterTimer;
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bool m_running;
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double m_linearGain;
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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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MovingAverageUtil<Real, double, 16> m_movingAverage;
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MessageQueue *m_guiMessageQueue;
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void handleEOF();
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MessageQueue *getMessageQueueToGUI() { return m_guiMessageQueue; }
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};
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#endif // PLUGINS_CHANNELTX_FILESOURCE_FILESOURCE_H_
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