z-bar-qt/Plugins/ZShell/Services/beattracker.hpp

#pragma once

#include "audioprovider.hpp"
#include <aubio/aubio.h>
#include <qqmlintegration.h>

namespace ZShell::services {

class BeatProcessor : public AudioProcessor {
	Q_OBJECT

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

	signals:
	void beat(smpl_t bpm);

	protected:
	void process() override;

	private:
	aubio_tempo_t* m_tempo;
	fvec_t* m_in;
	fvec_t* m_out;
};

class BeatTracker : public AudioProvider {
	Q_OBJECT
	QML_ELEMENT

	Q_PROPERTY(smpl_t bpm READ bpm NOTIFY bpmChanged)

	public:
	explicit BeatTracker(QObject* parent = nullptr);

	[[nodiscard]] smpl_t bpm() const;

	signals:
	void bpmChanged();
	void beat(smpl_t bpm);

	private:
	smpl_t m_bpm;

	void updateBpm(smpl_t bpm);
};

} // namespace ZShell::services