File indexing completed on 2024-04-28 04:52:21

 /*
     SPDX-FileCopyrightText: 2010 Simon Andreas Eugster <simon.eu@gmail.com>
     This file is part of kdenlive. See www.kdenlive.org.
 
 SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 #pragma once
 
 #include "abstractaudioscopewidget.h"
 #include "lib/audio/fftTools.h"
 #include "lib/external/kiss_fft/tools/kiss_fftr.h"
 #include "ui_audiospectrum_ui.h"
 
 // Enables debugging
 //#define DEBUG_AUDIOSPEC
 
 // Show overmodulation
 #define DETECT_OVERMODULATION
 
 #include <QHash>
 #include <QVector>
 
 class AudioSpectrum_UI;
 
 /**
  *  @brief 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.
  *
  *  @todo Currently only supports one channel. Add support for multiple channels.
 */
 class AudioSpectrum : public AbstractAudioScopeWidget
 {
     Q_OBJECT
 
 public:
     explicit AudioSpectrum(QWidget *parent = nullptr);
     ~AudioSpectrum() override;
 
     // Implemented virtual methods
     QString widgetName() const override;
 
 protected:
     ///// Implemented methods /////
     QRect scopeRect() override;
     QImage renderHUD(uint accelerationFactor) override;
     QImage renderAudioScope(uint accelerationFactor, const audioShortVector &audioFrame, const int freq, const int num_channels, const int num_samples,
                             const int newData) override;
     QImage renderBackground(uint accelerationFactor) override;
     void readConfig() override;
     void writeConfig();
 
     void handleMouseDrag(const QPoint &movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers) override;
 
 private:
     Ui::AudioSpectrum_UI *m_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{-70};
     /** Upper bound (max: 0) */
     int m_dBmax{0};
 
     /** Maximum frequency (limited by the sampling rate if determined automatically).
         Stored for the painters. */
     int m_freqMax{0};
     /** The user has chosen a custom frequency. */
     bool m_customFreq{false};
 
     float m_colorizeFactor{0};
 
 #ifdef DEBUG_AUDIOSPEC
     long m_timeTotal;
     long m_showTotal;
 #endif
 
 private Q_SLOTS:
     void slotResetMaxFreq();
 };