5e801e2793
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I20e5215108c6ebd5f8474fed5c3665118e4791e6 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
149 lines
4.5 KiB
C++
149 lines
4.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qmediaservice.h"
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#include "qmediaservice_p.h"
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#include <QtCore/qtimer.h>
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QT_BEGIN_NAMESPACE
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/*!
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\class QMediaService
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\brief The QMediaService class provides a common base class for media
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service implementations.
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\ingroup multimedia
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\ingroup multimedia_control
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\ingroup multimedia_core
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Media services provide implementations of the functionality promised
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by media objects, and allow multiple providers to implement a QMediaObject.
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To provide the functionality of a QMediaObject media services implement
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QMediaControl interfaces. Services typically implement one core media
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control which provides the core feature of a media object, and some
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number of additional controls which provide either optional features of
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the media object, or features of a secondary media object or peripheral
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object.
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A pointer to media service's QMediaControl implementation can be obtained
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by passing the control's interface name to the requestControl() function.
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\snippet doc/src/snippets/multimedia-snippets/media.cpp Request control
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Media objects can use services loaded dynamically from plug-ins or
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implemented statically within an applications. Plug-in based services
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should also implement the QMediaServiceProviderPlugin interface. Static
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services should implement the QMediaServiceProvider interface.
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\sa QMediaObject, QMediaControl, QMediaServiceProvider, QMediaServiceProviderPlugin
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*/
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/*!
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Construct a media service with the given \a parent. This class is meant as a
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base class for Multimedia services so this constructor is protected.
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*/
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QMediaService::QMediaService(QObject *parent)
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: QObject(parent)
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, d_ptr(new QMediaServicePrivate)
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{
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d_ptr->q_ptr = this;
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}
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/*!
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\internal
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*/
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QMediaService::QMediaService(QMediaServicePrivate &dd, QObject *parent)
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: QObject(parent)
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, d_ptr(&dd)
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{
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d_ptr->q_ptr = this;
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}
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/*!
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Destroys a media service.
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*/
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QMediaService::~QMediaService()
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{
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delete d_ptr;
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}
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/*!
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\fn QMediaControl* QMediaService::requestControl(const char *interface)
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Returns a pointer to the media control implementing \a interface.
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If the service does not implement the control, or if it is unavailable a
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null pointer is returned instead.
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Controls must be returned to the service when no longer needed using the
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releaseControl() function.
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*/
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/*!
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\fn T QMediaService::requestControl()
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Returns a pointer to the media control of type T implemented by a media service.
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If the service does not implement the control, or if it is unavailable a
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null pointer is returned instead.
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Controls must be returned to the service when no longer needed using the
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releaseControl() function.
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*/
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/*!
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\fn void QMediaService::releaseControl(QMediaControl *control);
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Releases a \a control back to the service.
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*/
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#include "moc_qmediaservice.cpp"
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QT_END_NAMESPACE
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