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
4.4 KiB
C++
143 lines
4.4 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2015 The Qt Company Ltd.
|
|
** Contact: http://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL21$
|
|
** 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 http://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at http://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 2.1 or version 3 as published by the Free
|
|
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
|
|
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
|
|
** following information to ensure the GNU Lesser General Public License
|
|
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
|
|
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
**
|
|
** As a special exception, The Qt Company gives you certain additional
|
|
** rights. These rights are described in The Qt Company LGPL Exception
|
|
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include "qmediacontrol_p.h"
|
|
#include <qmetadatareadercontrol.h>
|
|
|
|
QT_BEGIN_NAMESPACE
|
|
|
|
|
|
/*!
|
|
\class QMetaDataReaderControl
|
|
\inmodule QtMultimedia
|
|
|
|
|
|
\ingroup multimedia_control
|
|
|
|
|
|
\brief The QMetaDataReaderControl class provides read access to the
|
|
meta-data of a QMediaService's media.
|
|
|
|
If a QMediaService can provide read or write access to the meta-data of
|
|
its current media it will implement QMetaDataReaderControl. This control
|
|
provides functions for both retrieving and setting meta-data values.
|
|
Meta-data may be addressed by the keys defined in the
|
|
QMediaMetaData namespace.
|
|
|
|
The functionality provided by this control is exposed to application
|
|
code by the meta-data members of QMediaObject, and so meta-data access
|
|
is potentially available in any of the media object classes. Any media
|
|
service may implement QMetaDataReaderControl.
|
|
|
|
The interface name of QMetaDataReaderControl is
|
|
\c org.qt-project.qt.metadatareadercontrol/5.0 as defined in
|
|
QMetaDataReaderControl_iid.
|
|
|
|
\sa QMediaService::requestControl(), QMediaObject
|
|
*/
|
|
|
|
/*!
|
|
\macro QMetaDataReaderControl_iid
|
|
|
|
\c org.qt-project.qt.metadatareadercontrol/5.0
|
|
|
|
Defines the interface name of the QMetaDataReaderControl class.
|
|
|
|
\relates QMetaDataReaderControl
|
|
*/
|
|
|
|
/*!
|
|
Construct a QMetaDataReaderControl with \a parent. This class is meant as a base class
|
|
for service specific meta data providers so this constructor is protected.
|
|
*/
|
|
|
|
QMetaDataReaderControl::QMetaDataReaderControl(QObject *parent):
|
|
QMediaControl(*new QMediaControlPrivate, parent)
|
|
{
|
|
}
|
|
|
|
/*!
|
|
Destroy the meta-data object.
|
|
*/
|
|
|
|
QMetaDataReaderControl::~QMetaDataReaderControl()
|
|
{
|
|
}
|
|
|
|
/*!
|
|
\fn bool QMetaDataReaderControl::isMetaDataAvailable() const
|
|
|
|
Identifies if meta-data is available from a media service.
|
|
|
|
Returns true if the meta-data is available and false otherwise.
|
|
*/
|
|
|
|
/*!
|
|
\fn QVariant QMetaDataReaderControl::metaData(const QString &key) const
|
|
|
|
Returns the meta-data for the given \a key.
|
|
*/
|
|
|
|
/*!
|
|
\fn QMetaDataReaderControl::availableMetaData() const
|
|
|
|
Returns a list of keys there is meta-data available for.
|
|
*/
|
|
|
|
/*!
|
|
\fn void QMetaDataReaderControl::metaDataChanged()
|
|
|
|
Signal the changes of meta-data.
|
|
|
|
If multiple meta-data elements are changed,
|
|
metaDataChanged(const QString &key, const QVariant &value) signal is emitted
|
|
for each of them with metaDataChanged() changed emitted once.
|
|
*/
|
|
|
|
/*!
|
|
\fn void QMetaDataReaderControl::metaDataChanged(const QString &key, const QVariant &value)
|
|
|
|
Signal the changes of one meta-data element \a value with the given \a key.
|
|
*/
|
|
|
|
/*!
|
|
\fn void QMetaDataReaderControl::metaDataAvailableChanged(bool available)
|
|
|
|
Signal the availability of meta-data has changed, \a available will
|
|
be true if the multimedia object has meta-data.
|
|
*/
|
|
|
|
#include "moc_qmetadatareadercontrol.cpp"
|
|
QT_END_NAMESPACE
|
|
|