dlgtestbpmplayer.h

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// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
 
#include <QtCore/QThread>
#include <QtMultimedia/QAudioBuffer>
#include <QtMultimedia/QAudioDecoder>
#include <QtMultimedia/QAudioFormat>
 
#include "utils.h"
 
class QAudioSink;
class QIODevice;

class DlgTestBpmPlayer : public QThread {
    Q_OBJECT
#ifdef TESTING
    friend class DlgTestBpmPlayerTest;
#endif
public:
    DlgTestBpmPlayer(const QString file,
                     unsigned int nBeats,
                     bpmtype bpm,
                     qint64 posUs = 0,
                     QObject *parent = nullptr);
    ~DlgTestBpmPlayer() override;
    auto lengthUs() {
        return lengthUs_;
    }

    void stop();
    void update(unsigned int nBeats, qint64 posUs = 0);
    void setBpm(bpmtype bpm);
    Q_SIGNAL void audioError(QAudio::Error error);
    Q_SIGNAL void hasLengthUs(qint64 length);
 
protected:
    void run() override;
    QAudioSink *audioSinkFactory(const QAudioFormat &format);
 
protected Q_SLOTS:
    void decodeError(QAudioDecoder::Error error);
    void finishedDecoding();
    void handleStateChange(QAudio::State state);
    void readBuffer();
 
private:
    QAudioBuffer lastBuffer_;
    QAudioFormat format_;
    QByteArray buffer_;
    QAudioDecoder *decoder_ = nullptr;
    QAudioSink *output_ = nullptr;
    QIODevice *dev_ = nullptr;
    char *data_ = nullptr;
    char *startptr_ = nullptr;
    qint64 lengthUs_ = 0;
    qint64 posUS_ = 0;
    qint64 dataRemaining_;
    qint64 originalSize_;
    unsigned int nBeats_ = 4;
    bpmtype bpm_;
    bool readyToPlay_ = false;
    bool error_ = false;
};