Preparing for scope manager (merge from Granjow's work in refactoring)

[kdenlive] / src / scopes / audioscopes / audiospectrum.h

diff --git a/src/scopes/audioscopes/audiospectrum.h b/src/scopes/audioscopes/audiospectrum.h
new file mode 100644 (file)
index 0000000..77308af
--- /dev/null
+++ b/src/scopes/audioscopes/audiospectrum.h
@@ -0,0 +1,102 @@
+/***************************************************************************
+ *   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.                                   *
+ ***************************************************************************/
+
+/**
+   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 "kiss_fft/tools/kiss_fftr.h"
+#include "ffttools.h"
+
+class AudioSpectrum_UI;
+class AudioSpectrum : public AbstractAudioScopeWidget {
+    Q_OBJECT
+
+public:
+    AudioSpectrum(QWidget *parent = 0);
+    ~AudioSpectrum();
+
+    // Implemented virtual methods
+    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();
+
+    virtual void handleMouseDrag(const QPoint &movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers);
+
+private:
+    Ui::AudioSpectrum_UI *ui;
+
+    QAction *m_aResetHz;
+    QAction *m_aTrackMouse;
+    QAction *m_aShowMax;
+
+    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 */
+    int m_dBmin;
+    /** Upper bound (max: 0) */
+    int m_dBmax;
+
+    /** 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;
+
+#ifdef DEBUG_AUDIOSPEC
+    long m_timeTotal;
+    long m_showTotal;
+#endif
+
+
+private slots:
+    void slotResetMaxFreq();
+
+};
+
+#endif // AUDIOSPECTRUM_H