/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/

#ifndef QMETADATAREADERCONTROL_H
#define QMETADATAREADERCONTROL_H

#include <QtMultimedia/qmediacontrol.h>
#include <QtMultimedia/qmediaobject.h>

#include <QtMultimedia/qmediaresource.h>

#include <QtMultimedia/qtmultimediaglobal.h>
#include <QtMultimedia/qmultimedia.h>

QT_BEGIN_NAMESPACE

// Required for QDoc workaround
class QString;

class Q_MULTIMEDIA_EXPORT QMetaDataReaderControl : public QMediaControl
{
    Q_OBJECT
public:
    ~QMetaDataReaderControl();

    virtual bool isMetaDataAvailable() const = 0;

    virtual QVariant metaData(const QString &key) const = 0;
    virtual QStringList availableMetaData() const = 0;

Q_SIGNALS:
    void metaDataChanged();
    void metaDataChanged(const QString &key, const QVariant &value);

    void metaDataAvailableChanged(bool available);

protected:
    explicit QMetaDataReaderControl(QObject *parent = nullptr);
};

#define QMetaDataReaderControl_iid "org.qt-project.qt.metadatareadercontrol/5.0"
Q_MEDIA_DECLARE_CONTROL(QMetaDataReaderControl, QMetaDataReaderControl_iid)

QT_END_NAMESPACE


#endif  // QMETADATAPROVIDER_H