#pragma once

#include <QThread>
#include <QString>
#include <atomic>

#include <alsa/asoundlib.h>

// Audio passthrough: captures from the grabber's ALSA device and plays it
// straight to the default output with small buffers (low latency, so the
// sound stays in sync with the video preview). Same implementation as in
// the HDMI viewer.
class AudioThread : public QThread
{
    Q_OBJECT

public:
    explicit AudioThread(const QString &device, QObject *parent = nullptr);
    ~AudioThread() override;

    void stop();

signals:
    void errorOccurred(const QString &message);

protected:
    void run() override;

private:
    QString           m_device;
    std::atomic<bool> m_running{false};

    // PCM parameters
    static constexpr unsigned int      k_defaultRate     = 48000;
    static constexpr unsigned int      k_defaultChannels = 2;
    static constexpr snd_pcm_uframes_t k_periodFrames    = 1024;
};