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sdrangel/plugins/channeltx/filesource/filesourcesource.h

128 lines
4.5 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// //
// 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 //
// (at your option) any later version. //
// //
// 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 <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef PLUGINS_CHANNELTX_FILESOURCE_FILESOURCESOURCE_H_
#define PLUGINS_CHANNELTX_FILESOURCE_FILESOURCESOURCE_H_
#include <ctime>
#include <iostream>
#include <fstream>
#include <QObject>
#include <QString>
#include <QByteArray>
#include <QTimer>
#include "dsp/channelsamplesource.h"
#include "util/movingaverage.h"
#include "filesourcesettings.h"
class MessageQueue;
class FileSourceSource : public ChannelSampleSource {
public:
FileSourceSource();
~FileSourceSource();
virtual void pull(SampleVector::iterator begin, unsigned int nbSamples);
virtual void pullOne(Sample& sample);
virtual void prefetch(unsigned int nbSamples) { (void) nbSamples; }
/** Set center frequency given in Hz */
void setCenterFrequency(uint64_t centerFrequency) { m_centerFrequency = centerFrequency; }
/** Set sample rate given in Hz */
void setSampleRate(uint32_t sampleRate) { m_sampleRate = sampleRate; }
quint64 getSamplesCount() const { return m_samplesCount; }
double getMagSq() const { return m_magsq; }
void getMagSqLevels(double& avg, double& peak, int& nbSamples)
{
if (m_magsqCount > 0)
{
m_magsq = m_magsqSum / m_magsqCount;
m_magSqLevelStore.m_magsq = m_magsq;
m_magSqLevelStore.m_magsqPeak = m_magsqPeak;
}
avg = m_magSqLevelStore.m_magsq;
peak = m_magSqLevelStore.m_magsqPeak;
nbSamples = m_magsqCount == 0 ? 1 : m_magsqCount;
m_magsqSum = 0.0f;
m_magsqPeak = 0.0f;
m_magsqCount = 0;
}
void applySettings(const FileSourceSettings& settings, bool force = false);
void setMessageQueueToGUI(MessageQueue *messageQueue) { m_guiMessageQueue = messageQueue; }
void openFileStream(const QString& fileName);
void seekFileStream(int seekMillis);
void setRunning(bool running) { m_running = running; }
uint32_t getFileSampleRate() const { return m_fileSampleRate; }
quint64 getStartingTimeStamp() const { return m_startingTimeStamp; }
quint64 getRecordLengthMuSec() const { return m_recordLengthMuSec; }
quint32 getFileSampleSize() const { return m_sampleSize; }
private:
struct MagSqLevelsStore
{
MagSqLevelsStore() :
m_magsq(1e-12),
m_magsqPeak(1e-12)
{}
double m_magsq;
double m_magsqPeak;
};
int m_channelSampleRate;
int m_channelFrequencyOffset;
FileSourceSettings m_settings;
std::ifstream m_ifstream;
QString m_fileName;
quint32 m_sampleSize;
quint64 m_centerFrequency;
int64_t m_frequencyOffset;
uint32_t m_fileSampleRate;
quint64 m_samplesCount;
uint32_t m_sampleRate;
uint32_t m_deviceSampleRate;
quint64 m_recordLengthMuSec; //!< record length in microseconds computed from file size
quint64 m_startingTimeStamp;
QTimer m_masterTimer;
bool m_running;
double m_linearGain;
double m_magsq;
double m_magsqSum;
double m_magsqPeak;
int m_magsqCount;
MagSqLevelsStore m_magSqLevelStore;
MovingAverageUtil<Real, double, 16> m_movingAverage;
MessageQueue *m_guiMessageQueue;
void handleEOF();
MessageQueue *getMessageQueueToGUI() { return m_guiMessageQueue; }
};
#endif // PLUGINS_CHANNELTX_FILESOURCE_FILESOURCE_H_