/**************************************************************************** ** ** 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 QtMultimedia 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 #include #include #include "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( 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(); \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(); \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