mirror of https://github.com/saitohirga/WSJT-X.git
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
#ifndef DETECTOR_HPP__
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#define DETECTOR_HPP__
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#include "AudioDevice.hpp"
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//
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// output device that distributes data in predefined chunks via a signal
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//
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// the underlying device for this abstraction is just the buffer that
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// stores samples throughout a receiving period
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//
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class Detector : public AudioDevice
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{
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Q_OBJECT;
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Q_PROPERTY (bool monitoring READ isMonitoring WRITE setMonitoring);
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public:
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//
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// if the data buffer were not global storage and fixed size then we
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// might want maximum size passed as constructor arguments
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//
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Detector (unsigned frameRate, unsigned periodLengthInSeconds, unsigned framesPerSignal, QObject * parent = 0);
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bool open (Channel channel = Mono) {return AudioDevice::open (QIODevice::WriteOnly, channel);}
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bool isMonitoring () const {return m_monitoring;}
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void setMonitoring (bool newState) {m_monitoring = newState;}
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bool reset ();
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Q_SIGNAL void framesWritten (qint64);
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protected:
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qint64 readData (char * /* data */, qint64 /* maxSize */)
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{
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return -1; // we don't produce data
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}
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qint64 writeData (char const * data, qint64 maxSize);
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private:
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void clear (); // discard buffer contents
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unsigned secondInPeriod () const;
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unsigned m_frameRate;
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unsigned m_period;
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unsigned m_framesPerSignal;
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bool m_monitoring;
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bool m_starting;
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};
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#endif
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