/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #include "qmediacontrol.h" #include "qmediacontrol_p.h" QT_BEGIN_NAMESPACE /*! \class QMediaControl \inmodule QtMultimedia \ingroup multimedia \ingroup multimedia_control \ingroup multimedia_core \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 of optional controls which expose any additional functionality. A pointer to a control implemented by a media service can be obtained using the \l {QMediaService::requestControl()} member of QMediaService. If the service doesn't implement a control it will instead return a null pointer. \snippet multimedia-snippets/media.cpp Request control Alternatively if the IId of the control has been declared using Q_MEDIA_DECLARE_CONTROL the template version of QMediaService::requestControl() can be used to request the service without explicitly passing the IId or using qobject_cast(). \snippet multimedia-snippets/media.cpp Request control templated Most application code will not interface directly with a media service's controls, instead the QMediaObject which owns the service acts as an intermediary 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::requestControl() without explicitly passing the IId. \snippet multimedia-snippets/media.cpp Request control templated \sa QMediaService::requestControl() */ /*! 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