fd3a3a7292
It may be more efficient and convenient for application to use this signal instead of metaDataChanged(). metaDataChanged() signal is emitted for compatibility, backends should emit both signals. Signal added QMetadataReader/WritterControl, QMediaObject and QMediaRecorder. Change-Id: I5ca34a40e64b22034e6fde8cd7f9735cc3f72c68 Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
94 lines
2.7 KiB
C++
94 lines
2.7 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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#ifndef QMETADATAWRITERCONTROL_H
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#define QMETADATAWRITERCONTROL_H
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#include "qmediacontrol.h"
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#include "qmediaobject.h"
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#include "qmediaresource.h"
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#include <qtmultimediadefs.h>
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#include "qtmedianamespace.h"
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Multimedia)
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class Q_MULTIMEDIA_EXPORT QMetaDataWriterControl : public QMediaControl
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{
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Q_OBJECT
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public:
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~QMetaDataWriterControl();
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virtual bool isWritable() const = 0;
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virtual bool isMetaDataAvailable() const = 0;
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virtual QVariant metaData(const QString &key) const = 0;
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virtual void setMetaData(const QString &key, const QVariant &value) = 0;
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virtual QStringList availableMetaData() const = 0;
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Q_SIGNALS:
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void metaDataChanged();
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void metaDataChanged(const QString &key, const QVariant &value);
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void writableChanged(bool writable);
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void metaDataAvailableChanged(bool available);
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protected:
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QMetaDataWriterControl(QObject *parent = 0);
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};
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#define QMetaDataWriterControl_iid "com.nokia.Qt.QMetaDataWriterControl/1.0"
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Q_MEDIA_DECLARE_CONTROL(QMetaDataWriterControl, QMetaDataWriterControl_iid)
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif
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