+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2010 by Simon Andreas Eugster (simon.eu@gmail.com) *
- * This file is part of kdenlive. See www.kdenlive.org. *
- * *
- * 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; either version 2 of the License, or *
- * (at your option) any later version. *
- ***************************************************************************/
-
-/** This Spectrogram shows the spectral power distribution of incoming audio samples
- over time. See http://en.wikipedia.org/wiki/Spectrogram.
-
- The Spectrogram makes use of two caches:
- * A cached image where only the most recent line needs to be appended instead of
- having to recalculate the whole image. A typical speedup factor is 10x.
- * A FFT cache storing a history of previous spectral power distributions (i.e.
- the Fourier-transformed audio signals). This is used if the user adjusts parameters
- like the maximum frequency to display or minimum/maximum signal strength in dB.
- All required information is preserved in the FFT history, which would not be the
- case for an image (consider re-sizing the widget to 100x100 px and then back to
- 800x400 px -- lost is lost).
-*/
-
-#ifndef SPECTROGRAM_H
-#define SPECTROGRAM_H
-
-#include <QtCore>
-
-#include "abstractaudioscopewidget.h"
-#include "ui_spectrogram_ui.h"
-#include "ffttools.h"
-
-class Spectrogram_UI;
-class Spectrogram : public AbstractAudioScopeWidget {
- Q_OBJECT
-
-public:
- Spectrogram(QWidget *parent = 0);
- ~Spectrogram();
-
- QString widgetName() const;
-
-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, const int newData);
- QImage renderBackground(uint accelerationFactor);
- bool isHUDDependingOnInput() const;
- bool isScopeDependingOnInput() const;
- bool isBackgroundDependingOnInput() const;
- virtual void readConfig();
- void writeConfig();
- void handleMouseDrag(const QPoint &movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers);
- void resizeEvent(QResizeEvent *event);
-
-private:
- Ui::Spectrogram_UI *ui;
- FFTTools m_fftTools;
- QAction *m_aResetHz;
- QAction *m_aGrid;
- QAction *m_aTrackMouse;
- QAction *m_aHighlightPeaks;
-
- QList<QVector<float> > m_fftHistory;
- QImage m_fftHistoryImg;
-
- int m_dBmin;
- int m_dBmax;
-
- int m_freqMax;
- bool m_customFreq;
-
- bool m_parameterChanged;
-
- QRect m_innerScopeRect;
-
-private slots:
- void slotResetMaxFreq();
-
-};
-
-#endif // SPECTROGRAM_H