bbfccc7135
Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Change-Id: I1c6faa4f59f8eca54f01ef20941fa60161dd7872 Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
143 lines
4.5 KiB
C++
143 lines
4.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company 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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** $QT_END_LICENSE$
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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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\inmodule QtMultimedia
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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 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. In general,
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implementing a QMediaService is outside of the scope of this documentation
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and support on the relevant mailing lists or IRC channels should be sought.
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\sa QMediaObject, QMediaControl
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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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