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#ifndef QWINDOWSCAMERASESSION_H
#define QWINDOWSCAMERASESSION_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <private/qtmultimediaglobal_p.h>
#include <qcamera.h>
#include <qmediaencodersettings.h>
#include <qaudiodevice.h>
#include <qwindowsmultimediautils_p.h>

QT_BEGIN_NAMESPACE

class QVideoSink;
class QWindowsCameraReader;

class QWindowsCameraSession : public QObject
{
    Q_OBJECT
public:
    explicit QWindowsCameraSession(QObject *parent = nullptr);
    ~QWindowsCameraSession();

    bool isActive() const;
    void setActive(bool active);

    bool isReadyForCapture() const;

    void setActiveCamera(const QCameraDevice &info);

    void setCameraFormat(const QCameraFormat &cameraFormat);

    void setVideoSink(QVideoSink *surface);

    QMediaEncoderSettings videoSettings() const;
    void setVideoSettings(const QMediaEncoderSettings &settings);

    bool isMuted() const;
    void setMuted(bool muted);
    qreal volume() const;
    void setVolume(qreal volume);
    QAudioDevice audioInput() const;
    bool setAudioInput(const QAudioDevice &info);

    bool startRecording(const QString &fileName);
    void stopRecording();
    bool pauseRecording();
    bool resumeRecording();

Q_SIGNALS:
    void activeChanged(bool);
    void readyForCaptureChanged(bool);
    void durationChanged(qint64 duration);
    void recordingStarted();
    void recordingStopped();
    void streamingError(int errorCode);
    void newVideoFrame(const QVideoFrame &frame);

private Q_SLOTS:
    void handleStreamingStarted();
    void handleStreamingStopped();
    void handleStreamingError(int errorCode);
    void handleNewVideoFrame(const QVideoFrame &frame);

private:
    quint32 estimateVideoBitRate(const GUID &videoFormat, quint32 width, quint32 height,
                                qreal frameRate, QMediaEncoderSettings::Quality quality);
    quint32 estimateAudioBitRate(const GUID &audioFormat, QMediaEncoderSettings::Quality quality);
    bool m_active = false;
    QCameraDevice m_activeCameraInfo;
    QCameraFormat m_cameraFormat;
    QWindowsCameraReader *m_cameraReader = nullptr;
    QMediaEncoderSettings m_mediaEncoderSettings;
    QAudioDevice m_audioInput;
    QVideoSink  *m_surface = nullptr;
};

QT_END_NAMESPACE

#endif // QWINDOWSCAMERASESSION_H