#include "abstractaudioscopewidget.h"
#include "ui_audiospectrum_ui.h"
#include "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;
- QHash<QString, kiss_fftr_cfg> m_fftCfgs; // FFT cfg cache
- QHash<QString, QVector<float> > m_windowFunctions; // Window function cache
QAction *m_aResetHz;
+ FFTTools m_fftTools;
+ QVector<float> m_lastFFT;
+ QSemaphore m_lastFFTLock;
+
/** Contains the plot only; m_scopeRect contains text and widgets as well */
QRect m_innerScopeRect;
/** The user has chosen a custom frequency. */
bool m_customFreq;
-
- /** Returns a signature for a kiss_fft configuration
- used as a hash in the cache */
- static const QString cfgSignature(const int size);
-
-
- ///// 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;
-
+ /** This is linear interpolation with the special property that it preserves peaks, which is required
+ for e.g. showing correct Decibel values (where the peak values are of interest).
+ Consider f = {0, 100, 0}
+ x = {0.5, 1.5}: With default linear interpolation x0 and x1 would both be mapped to 50.
+ This function maps x1 (the first position after the peak) to 100.
+
+ @param in The source vector containing the data
+ @param targetSize Number of interpolation nodes between ...
+ @param left the left array index in the in-vector and ...
+ @param right the right array index (both inclusive).
+ @param fill If right lies outside of the array bounds (which is perfectly fine here) then this value
+ will be used for filling the missing information.
+ */
+ static const QVector<float> interpolatePeakPreserving(const QVector<float> in, const uint targetSize, uint left = 0, uint right = 0, float fill = 0.0);
private slots: