js8call/JS8_Audio/NotificationAudio.h

#ifndef NOTIFICATIONAUDIO_H
#define NOTIFICATIONAUDIO_H

#include "NotificationSoundOutput.h"

#include <QAudioDevice>
#include <QBuffer>
#include <QByteArray>
#include <QHash>
#include <QPair>
#include <QScopedPointer>

class SoundOutput;

class NotificationAudio : public QObject {
    Q_OBJECT

  public:
    explicit NotificationAudio(QObject *parent = nullptr);
    ~NotificationAudio();

  public slots:
    void status(QString message);
    void error(QString message);
    void setDevice(const QAudioDevice &device, unsigned msBuffer = 0);
    void play(const QString &filePath);
    void stop();

  private:
    using Entry = QPair<QAudioFormat, QByteArray>;
    using Cache = QHash<QString, Entry>;

    void playEntry(Cache::const_iterator);
    static QByteArray pcm24le_to_int32le(const QByteArray &in);
    static bool upmixMonoToStereoInPlace(QAudioFormat &fmt, QByteArray &data);

    QScopedPointer<NotificationSoundOutput> m_stream;
    Cache m_cache;
    QAudioDevice m_device;
    QBuffer m_buffer;
    unsigned m_msBuffer;
};

#endif // NOTIFICATIONAUDIO_H