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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 QtMediaServices module 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qmetaobject.h>
#include <QtCore/qtimer.h>
#include <QtMediaServices//qmediacontrol.h>
#include <QtMediaServices/private/qmediacontrol_p.h>
QT_BEGIN_NAMESPACE
/*!
\class QMediaControl
\ingroup multimedia-serv
\since 4.7
\preliminary
\brief The QMediaControl class provides a base interface for media service controls.
Media controls provide an interface to individual features provided by a media service. Most
services implement a principal control which exposes the core functionality of the service and
a number optional controls which expose any additional functionality.
A pointer to a control implemented by a media service can be obtained using the
\l {QMediaService::control()}{control()} member of QMediaService. If the service doesn't
implement a control it will instead return a null pointer.
\code
QMediaPlayerControl *control = qobject_cast<QMediaPlayerControl *>(
service->control("com.nokia.Qt.QMediaPlayerControl/1.0"));
\endcode
Alternatively if the IId of the control has been declared using Q_MEDIA_DECLARE_CONTROL
the template version of QMediaService::control() can be used to request the service without
explicitly passing the IId.
\code
QMediaPlayerControl *control = service->control<QMediaPlayerControl *>();
\endcode
Most application code will not interface directly with a media service's controls, instead the
QMediaObject which owns the service acts as an intermeditary between one or more controls and
the application.
\sa QMediaService, QMediaObject
*/
/*!
\macro Q_MEDIA_DECLARE_CONTROL(Class, IId)
\relates QMediaControl
The Q_MEDIA_DECLARE_CONTROL macro declares an \a IId for a \a Class that inherits from
QMediaControl.
Declaring an IId for a QMediaControl allows an instance of that control to be requested from
QMediaService::control() without explicitly passing the IId.
\code
QMediaPlayerControl *control = service->control<QMediaPlayerControl *>();
\endcode
\sa QMediaService::control()
*/
/*!
Destroys a media control.
*/
QMediaControl::~QMediaControl()
{
delete d_ptr;
}
/*!
Constructs a media control with the given \a parent.
*/
QMediaControl::QMediaControl(QObject *parent)
: QObject(parent)
, d_ptr(new QMediaControlPrivate)
{
d_ptr->q_ptr = this;
}
/*!
\internal
*/
QMediaControl::QMediaControl(QMediaControlPrivate &dd, QObject *parent)
: QObject(parent)
, d_ptr(&dd)
{
d_ptr->q_ptr = this;
}
#include "moc_qmediacontrol.cpp"
QT_END_NAMESPACE
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