track.h

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// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
 
#include <QtCore/QSpan>
#include <STTypes.h>
 
#include "soundtouchbpmdetector.h"
#include "utils.h"
 
class QAudioDecoder;

class Track : public QObject {
    Q_OBJECT
#ifdef TESTING
    friend class DlgBpmDetectTest;
    friend class TrackTest;
#endif
 
public:
    enum DetectionState {
        Detecting, 
        Error,     
    };

    Track(const QString &fileName, QAudioDecoder *decoder, QObject *parent = nullptr);
    Track(const QString &fileName, QObject *parent = nullptr);
#ifdef TESTING
    explicit Track(QObject *parent = nullptr);
#endif
    ~Track() override;
    static bpmtype correctBpm(bpmtype dBpm);
    static void setMinimumBpm(bpmtype dMin);
    static void setMaximumBpm(bpmtype dMax);
    static bpmtype minimumBpm();
    static bpmtype maximumBpm();
    void clearBpm();
    DetectionState detectBpm();
    void saveBpm();
    void printBpm() const;
    void setBpm(bpmtype dBpm);
    bpmtype bpm() const;
    QString formatted() const;
    QString formatted(const QString &format) const;
    QString fileName() const;
    qlonglong length() const;
    QString formattedLength() const;
    bool isValid() const;
    QString artist() const;
    QString title() const;
    void setFormat(const QString &format = QStringLiteral("0.00"));
    QString format() const;
    void stop();
    void readTags();
    void setDetector(AbstractBpmDetector *detector);
    bool hasValidBpm() const;
    bool hasSavedBpm() const;
    QString hostFileName() const;
 
Q_SIGNALS:
    void hasBpm(bpmtype bpm);
    void progress(qint64 pos, qint64 length);
    void finished();
 
protected:
    void storeBpm(const QString &sBpm);
    void removeBpm();
 
private:
    void setupDecoder();
 
    AbstractBpmDetector *detector_ = nullptr;
    QAudioDecoder *decoder_ = nullptr;
    QString artist_;
    QString bpmFormat_ = QStringLiteral("0.00");
    QString fileName_;
    QString title_;
    bool hasSavedBpm_ = false;
    bool isValidFile_ = false;
    bool opened_ = false;
    bool stopped_ = false;
    bpmtype dBpm_ = 0;
    qlonglong length_ = 0;
 
    static bpmtype _dMaxBpm;
    static bpmtype _dMinBpm;
};