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#ifndef QX11VIDEOSURFACE_H

#define QX11VIDEOSURFACE_H

#include <QtGui/qwidget.h>

#include <QtMultimedia/qabstractvideosurface.h>

#include <X11/Xlib.h>

#include <X11/extensions/Xv.h>

#include <X11/extensions/Xvlib.h>

QT_USE_NAMESPACE

class QX11VideoSurface : public QAbstractVideoSurface

{

    Q_OBJECT

public:

    QX11VideoSurface(QObject *parent = 0);

    ~QX11VideoSurface();

    WId winId() const;

    void setWinId(WId id);

    QRect displayRect() const;

    void setDisplayRect(const QRect &rect);

    QRect viewport() const;

    void setViewport(const QRect &rect);

    int brightness() const;

    void setBrightness(int brightness);

    int contrast() const;

    void setContrast(int contrast);

    int hue() const;

    void setHue(int hue);

    int saturation() const;

    void setSaturation(int saturation);

    QList<QVideoFrame::PixelFormat> supportedPixelFormats(

            QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;

    bool start(const QVideoSurfaceFormat &format);

    void stop();

    bool present(const QVideoFrame &frame);

private:   

    WId m_winId;

    XvPortID m_portId;

    GC m_gc;

    XvImage *m_image;

    QList<QVideoFrame::PixelFormat> m_supportedPixelFormats;

    QVector<int> m_formatIds;

    QRect m_viewport;

    QRect m_displayRect;

    QPair<int, int> m_brightnessRange;

    QPair<int, int> m_contrastRange;

    QPair<int, int> m_hueRange;

    QPair<int, int> m_saturationRange;

    bool findPort();

    void querySupportedFormats();

    int getAttribute(const char *attribute, int minimum, int maximum) const;

    void setAttribute(const char *attribute, int value, int minimum, int maximum);

    static int redistribute(int value, int fromLower, int fromUpper, int toLower, int toUpper);

};

#endif