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#ifndef V4LCAMERASESSION_H

#define V4LCAMERASESSION_H

#include <QtCore/qobject.h>

#include <QSocketNotifier>

#include <QTime>

#include <QUrl>

#include <QFile>

#include <qmediarecorder.h>

#include <experimental/qcamera.h>

#include <QtMultimedia/qvideoframe.h>

#include <QtMultimedia/qabstractvideosurface.h>

#include "cameraformatconverter.h"

QTM_USE_NAMESPACE

class V4LVideoRenderer;

struct video_buffer {

    void* start;

    size_t length;

};

class V4LCameraSession : public QObject

{

    Q_OBJECT

public:

    V4LCameraSession(QObject *parent = 0);

    ~V4LCameraSession();

    bool deviceReady();

    // camera controls

    int framerate() const;

    void setFrameRate(int rate);

    int brightness() const;

    void setBrightness(int b);

    int contrast() const;

    void setContrast(int c);

    int saturation() const;

    void setSaturation(int s);

    int hue() const;

    void setHue(int h);

    int sharpness() const;

    void setSharpness(int s);

    int zoom() const;

    void setZoom(int z);

    bool backlightCompensation() const;

    void setBacklightCompensation(bool);

    int whitelevel() const;

    void setWhitelevel(int w);

    int rotation() const;

    void setRotation(int r);

    bool flash() const;

    void setFlash(bool f);

    bool autofocus() const;

    void setAutofocus(bool f);

    QSize frameSize() const;

    void setFrameSize(const QSize& s);

    void setDevice(const QString &device);

    QList<QVideoFrame::PixelFormat> supportedPixelFormats();

    QVideoFrame::PixelFormat pixelFormat() const;

    void setPixelFormat(QVideoFrame::PixelFormat fmt);

    QList<QSize> supportedResolutions();

    // media control

    bool setOutputLocation(const QUrl &sink);

    QUrl outputLocation() const;

    qint64 position() const;

    QMediaRecorder::State state() const;

    void record();

    void pause();

    void stop();

    void setSurface(QAbstractVideoSurface* surface);

    void captureImage(const QString &fileName);

    void previewMode(bool value);

    void captureToFile(bool value);

Q_SIGNALS:

    void cameraStateChanged(QCamera::State);

    void recordStateChanged(QMediaRecorder::State);

    void imageCaptured(const QString &fileName, const QImage &img);

private Q_SLOTS:

    void captureFrame();

private:

    bool isFormatSupported(QVideoFrame::PixelFormat fmt);

    QSocketNotifier *notifier;

    QList<video_buffer> buffers;

    int sfd;

    QTime timeStamp;

    bool available;

    bool preview;

    bool toFile;

    bool active;

    QMediaRecorder::State m_state;

    QByteArray m_device;

    QUrl m_sink;

    QFile m_file;

    V4LVideoRenderer*   m_output;

    QAbstractVideoSurface* m_surface;

    QVideoFrame::PixelFormat pixelF;

    QVideoFrame::PixelFormat savedPixelF;

    QSize m_windowSize;

    QList<QSize> resolutions;

    QList<unsigned int> formats;

    CameraFormatConverter* converter;

    QString m_snapshot;

};

#endif