* (at your option) any later version. *
***************************************************************************/
+/**
+ Displays a spectral power distribution of audio samples.
+ The frequency distribution is calculated by means of a Fast Fourier Transformation.
+ For more information see Wikipedia:FFT and the code comments.
+*/
+
#ifndef AUDIOSPECTRUM_H
#define AUDIOSPECTRUM_H
+// Enables debugging
+//#define DEBUG_AUDIOSPEC
+
+// Show overmodulation
+#define DETECT_OVERMODULATION
+
#include <QtCore>
#include <QVector>
#include <QHash>
#include "abstractaudioscopewidget.h"
#include "ui_audiospectrum_ui.h"
-#include "tools/kiss_fftr.h"
+#include "kiss_fft/tools/kiss_fftr.h"
+#include "ffttools.h"
class AudioSpectrum_UI;
class AudioSpectrum : public AbstractAudioScopeWidget {
// Implemented virtual methods
QString widgetName() const;
- static const QString directions[]; // Mainly for debug output
- enum RescaleDirection { North, Northeast, East, Southeast };
- enum RescaleDimension { Min_dB, Max_dB, Max_Hz };
-
protected:
///// Implemented methods /////
QRect scopeRect();
QImage renderHUD(uint accelerationFactor);
- QImage renderAudioScope(uint accelerationFactor, const QVector<int16_t> audioFrame, const int freq, const int num_channels, const int num_samples);
+ QImage renderAudioScope(uint accelerationFactor, const QVector<int16_t> audioFrame, const int freq, const int num_channels, const int num_samples, const int newData);
QImage renderBackground(uint accelerationFactor);
bool isHUDDependingOnInput() const;
bool isScopeDependingOnInput() const;
virtual void readConfig();
void writeConfig();
- void mouseMoveEvent(QMouseEvent *event);
- void mousePressEvent(QMouseEvent *event);
- void mouseReleaseEvent(QMouseEvent *event);
+ virtual void handleMouseDrag(const QPoint &movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers);
private:
Ui::AudioSpectrum_UI *ui;
- kiss_fftr_cfg m_cfg;
- QHash<QString, QVector<float> > m_windowFunctions;
QAction *m_aResetHz;
+ QAction *m_aTrackMouse;
+ QAction *m_aShowMax;
- // Contains the plot only; m_scopeRect contains text and widgets as well
+ FFTTools m_fftTools;
+ QVector<float> m_lastFFT;
+ QSemaphore m_lastFFTLock;
+
+ QVector<float> m_peaks;
+ QVector<float> m_peakMap;
+
+ /** Contains the plot only; m_scopeRect contains text and widgets as well */
QRect m_innerScopeRect;
/** Lower bound for the dB value to display */
/** Upper bound (max: 0) */
int m_dBmax;
- /** Maximum frequency (depends on the sampling rate)
- Stored for the HUD painter */
- uint m_freqMax;
+ /** Maximum frequency (limited by the sampling rate if determined automatically).
+ Stored for the painters. */
+ int m_freqMax;
/** The user has chosen a custom frequency. */
bool m_customFreq;
+ float colorizeFactor;
- ///// Movement detection /////
- const int m_rescaleMinDist;
- const float m_rescaleVerticalThreshold;
-
- bool m_rescaleActive;
- bool m_rescalePropertiesLocked;
- bool m_rescaleFirstRescaleDone;
- short m_rescaleScale;
- Qt::KeyboardModifiers m_rescaleModifiers;
- AudioSpectrum::RescaleDirection m_rescaleClockDirection;
- QPoint m_rescaleStartPoint;
-
+#ifdef DEBUG_AUDIOSPEC
+ long m_timeTotal;
+ long m_showTotal;
+#endif
private slots:
- void slotUpdateCfg();
void slotResetMaxFreq();
};