/****************************************************************************
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
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** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QEGLIMAGETEXTURESURFACE_P_H
#define QEGLIMAGETEXTURESURFACE_P_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 <qtmultimediawidgetdefs.h>
#include <QtCore/qsize.h>
#include <QtGui/qimage.h>
#include <QtGui/qmatrix4x4.h>
#include <QtGui/qpaintengine.h>

#include <QtOpenGL/qglshaderprogram.h>

#include <qabstractvideosurface.h>
#include <qvideosurfaceformat.h>
#include <qvideoframe.h>

QT_BEGIN_NAMESPACE

class QGLContext;
class QGLShaderProgram;
class QPainterVideoSurface;

class QEglImageTextureSurface : public QAbstractVideoSurface
{
    Q_OBJECT
public:
    explicit QEglImageTextureSurface(QObject *parent = 0);
    ~QEglImageTextureSurface();

    QList<QVideoFrame::PixelFormat> supportedPixelFormats(
            QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const;

    bool start(const QVideoSurfaceFormat &format);
    void stop();

    bool present(const QVideoFrame &frame);

    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);

    bool isReady() const;
    void setReady(bool ready);

    void paint(QPainter *painter, const QRectF &target, const QRectF &source = QRectF(0, 0, 1, 1));

    const QGLContext *glContext() const;
    void setGLContext(QGLContext *context);

    bool isOverlayEnabled() const;
    void setOverlayEnabled(bool enabled);

    QRect displayRect() const;
    void setDisplayRect(const QRect &rect);

public Q_SLOTS:
    void viewportDestroyed();

Q_SIGNALS:
    void frameChanged();

private:
    QGLContext *m_context;
    QGLShaderProgram *m_program;

    QVideoFrame m_frame;

    QVideoFrame::PixelFormat m_pixelFormat;
    QVideoSurfaceFormat::Direction m_scanLineDirection;
    QSize m_frameSize;
    QRect m_sourceRect;
    bool m_ready;

    QRect m_viewport;
    QRect m_displayRect;
    QColor m_colorKey;

    QPainterVideoSurface *m_fallbackSurface;
    bool m_fallbackSurfaceActive;
};

QT_END_NAMESPACE


#endif
