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CW keyer: have the smoother as a class member so it can be controlled by the keyer to determine the ramp length depending on dot length

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This commit is contained in:
f4exb 2017-10-21 05:00:23 +02:00
parent 1f60fa48d0
commit 85c8129d9c
2 changed files with 24 additions and 21 deletions
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1
sdrbase/dsp/cwkeyer.cpp
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@ -197,6 +197,7 @@ void CWKeyer::setWPM(int wpm)
QMutexLocker mutexLocker(&m_mutex);
m_dotLength = (int) (0.24f * m_sampleRate * (5.0f / wpm));
m_wpm = wpm;
m_cwSmoother.setNbFadeSamples(m_dotLength/5); // 20% the dot time
}
}

44
sdrbase/dsp/cwkeyer.h
View File

@ -23,6 +23,27 @@
#include "util/export.h"
/**
* Ancillary class to smooth out CW transitions with a sine shape
*/
class CWSmoother
{
public:
CWSmoother();
~CWSmoother();
void setNbFadeSamples(unsigned int nbFadeSamples);
bool getFadeSample(bool on, float& sample);
private:
QMutex m_mutex;
unsigned int m_fadeInCounter;
unsigned int m_fadeOutCounter;
unsigned int m_nbFadeSamples;
float *m_fadeInSamples;
float *m_fadeOutSamples;
};
class SDRANGEL_API CWKeyer : public QObject {
Q_OBJECT
@ -68,6 +89,7 @@ public:
void setLoop(bool loop) { m_loop = loop; }
void reset() { m_keyIambicState = KeySilent; }
CWSmoother& getCWSmoother() { return m_cwSmoother; }
int getSample();
bool eom();
void resetText() { m_textState = TextStart; }
@ -93,6 +115,7 @@ private:
CWMode m_mode;
CWKeyIambicState m_keyIambicState;
CWTextState m_textState;
CWSmoother m_cwSmoother;
static const signed char m_asciiToMorse[128][7];
@ -100,25 +123,4 @@ private:
void nextStateText();
};
/**
* Ancillary class to smooth out CW transitions with a sine shape
*/
class CWSmoother
{
public:
CWSmoother();
~CWSmoother();
void setNbFadeSamples(unsigned int nbFadeSamples);
bool getFadeSample(bool on, float& sample);
private:
QMutex m_mutex;
unsigned int m_fadeInCounter;
unsigned int m_fadeOutCounter;
unsigned int m_nbFadeSamples;
float *m_fadeInSamples;
float *m_fadeOutSamples;
};
#endif /* SDRBASE_DSP_CWKEYER_H_ */