dcbbad869e
Change copyrights and license headers from Nokia to Digia Change-Id: Id77334cfb15de096941c88e32d04ca07b4eb4709 Reviewed-by: Janne Anttila <janne.anttila@digia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com> Reviewed-by: Lars Knoll <lars.knoll@digia.com>
151 lines
4.9 KiB
C++
151 lines
4.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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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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** 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 Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/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 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: 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, Digia gives you certain additional
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** rights. These rights are described in the Digia 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
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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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. 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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