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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QCVDISPLAYLINK_H
#define QCVDISPLAYLINK_H
#include <QtCore/qobject.h>
#include <QtCore/qmutex.h>
#include <QuartzCore/CVDisplayLink.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QCvDisplayLink : public QObject
{
Q_OBJECT
public:
QCvDisplayLink(QObject *parent = 0);
virtual ~QCvDisplayLink();
bool isValid();
bool isActive() const;
public slots:
void start();
void stop();
signals:
void tick(const CVTimeStamp &ts);
public:
void displayLinkEvent(const CVTimeStamp *);
protected:
virtual bool event(QEvent *);
private:
CVDisplayLinkRef m_displayLink;
QMutex m_displayLinkMutex;
bool m_pendingDisplayLinkEvent;
bool m_isActive;
CVTimeStamp m_frameTimeStamp;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif
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