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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QX11VIDEOSURFACE_H
#define QX11VIDEOSURFACE_H
#include <QtWidgets/qwidget.h>
#include <qabstractvideosurface.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xv.h>
#include <X11/extensions/Xvlib.h>
QT_BEGIN_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:
Display *display() const;
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);
};
QT_END_NAMESPACE
#endif
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