audiowaveform.h

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#ifndef AUDIOWAVEFORM_H
#define AUDIOWAVEFORM_H
 
#include <QWidget>
 
#include <QMediaPlayer>
#include <QAbstractButton>
#include <QAbstractSlider>
#include <QComboBox>
#include <QLabel>
#include<QDebug>
#include<QMediaMetaData>
 
//---------------------------------------
#include"mediaplayer/qcustomplot.h"
#include<QVector>
#include"mediaplayer/fftw3.h"
#include<QAudioFormat>
 
extern "C" {
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include <libavutil/opt.h>
#include <libavutil/samplefmt.h>
#include <libavutil/channel_layout.h>
#include <libswresample/swresample.h>
}
 
namespace Ui {
class AudioWaveForm;
}
 
class AudioWaveForm : public QWidget
{
    Q_OBJECT
 
public:
    explicit AudioWaveForm(QWidget *parent = nullptr);
    ~AudioWaveForm();
    void updateTimestampsToggle();
    void updateTimeStamps();
    void showWaveForm();
 
public slots:
    void getDuration(qint64 total_time);
    void getBlockText(QString blockText);
    void getTimeArray(QVector<QTime> timeArray);
 
    void setPlayerPosition(qint64 position);
    void setMediaUrl(QUrl url);
 
private slots:
    void processAudioIn();
    void onMouseRelease(QMouseEvent *event);
    void onMouseMove(QMouseEvent *event);
    void onMousePress(QMouseEvent *event);
 
    void on_addBtn_clicked();
 
    void on_updateTimestampsBtn_clicked();
 
signals:
    void updateTime(int block_num, QTime endTime);
    void positionChanged(qint64 position);
    void samplingStatus(bool status);
    void updateTimeStampsBlock(QVector<int> blocks);
 
protected:
    // void resizeEvent(QResizeEvent *event) override;
 
private:
    Ui::AudioWaveForm *ui;
    //-------------------------------------------
 
    QCustomPlot *waveWidget;
    void processSampleRate();
    void processBuffer();
 
    void samplesUpdated();
    void plotLines(int n);
    void deselectLines(QVector<QCPItemLine*> &lines, int index, int num_of_lines);
    void setUtteranceNumber(int n);
    void updateUtterances(int ind);
    void adjustTime(double timeValue);
    void getUpdatedIndexes(int index1, int index2);
    void addPlotLine();
    void addUtteranceNumber();
    bool isAudioFile(const QString& filePath);
 
    QBuffer mInputBuffer;
    qint64 tot_duration;
 
    //qint64 mDuration;
    QVector<double> mFftIndices;
 
    fftw_plan mFftPlan;
    double *mFftIn;
    double *mFftOut;
 
    QVector<double> mSamples;
    QVector<double> mIndices;
 
    qint64 total_duration = 0;
    int flag1 = 1;
    int linesAvailable = -1;
    int num_of_blocks;
    qint64 sample_rate = 0;
    qint64 num_sam = 0;
    int factor = 1;
    QVector<int> blocktime;
    QVector<QTime> endTime;
 
    QVector<QCPItemLine*> startLine;
    QVector<QCPItemLine*> endLine;
    QVector<QCPItemText*> utteranceNumbers;
    std::unique_ptr<QCPItemLine> playLine = nullptr;
    // QVector<double> startCoords;
    QVector<double> endCoords;
    bool updateTimestamps = false;
 
    bool dragging = false;
    double lastMouseX;
    int selectedLineIndex = -1;
    uint64_t numOfAddedLines = 0;
    QString blockText;
 
    QUrl mUrl;
    QMediaPlayer* mPlayer = nullptr;
    QBuffer mAudioBuffer;
    QString mMediaFileName;
 
    QVector<double> timeValues;
 
 
};
 
#endif // AUDIOWAVEFORM_H