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#include "qmediacontrol_p.h"

#include "qmetadatacontrol.h"

QT_BEGIN_NAMESPACE

/*!

    \class QMetaDataControl

    \ingroup multimedia-serv

    \preliminary

    \brief The QMetaDataControl class provides 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 QMetaDataControl.  This control

    provides functions for both retrieving and setting meta-data values.

    Meta-data may be addressed by the well defined keys in the

    QtMediaServices::MetaData enumeration using the metaData() functions, or by

    string keys using the extendedMetaData() functions.

    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 QMetaDataControl.

    The interface name of QMetaDataControl is \c com.nokia.Qt.QMetaDataControl/1.0 as

    defined in QMetaDataControl_iid.

    \sa QMediaService::control(), QMediaObject

*/

/*!

    \macro QMetaDataControl_iid

    \c com.nokia.Qt.QMetaDataControl/1.0

    Defines the interface name of the QMetaDataControl class.

    \relates QMetaDataControl

*/

/*!

    Construct a QMetaDataControl with \a parent. This class is meant as a base class

    for service specific meta data providers so this constructor is protected.

*/

QMetaDataControl::QMetaDataControl(QObject *parent):

    QMediaControl(*new QMediaControlPrivate, parent)

{

}

/*!

    Destroy the meta-data object.

*/

QMetaDataControl::~QMetaDataControl()

{

}

/*!

    \fn bool QMetaDataControl::isMetaDataAvailable() const

    Identifies if meta-data is available from a media service.

    Returns true if the meta-data is available and false otherwise.

*/

/*!

    \fn bool QMetaDataControl::isWritable() const

    Identifies if a media service's meta-data can be edited.

    Returns true if the meta-data is writable and false otherwise.

*/

/*!

    \fn QVariant QMetaDataControl::metaData(QtMediaServices::MetaData key) const

    Returns the meta-data for the given \a key.

*/

/*!

    \fn void QMetaDataControl::setMetaData(QtMediaServices::MetaData key, const QVariant &value)

    Sets the \a value of the meta-data element with the given \a key.

*/

/*!

    \fn QMetaDataControl::availableMetaData() const

    Returns a list of keys there is meta-data available for.

*/

/*!

    \fn QMetaDataControl::extendedMetaData(const QString &key) const

    Returns the metaData for an abitrary string \a key.

    The valid selection of keys for extended meta-data is determined by the provider and the meaning

    and type may differ between providers.

*/

/*!

    \fn QMetaDataControl::setExtendedMetaData(const QString &key, const QVariant &value)

    Change the value of the meta-data element with an abitrary string \a key to \a value.

    The valid selection of keys for extended meta-data is determined by the provider and the meaning

    and type may differ between providers.

*/

/*!

    \fn QMetaDataControl::availableExtendedMetaData() const

    Returns a list of keys there is extended meta-data available for.

*/

/*!

    \fn void QMetaDataControl::metaDataChanged()

    Signal the changes of meta-data.

*/

/*!

    \fn void QMetaDataControl::metaDataAvailableChanged(bool available)

    Signal the availability of meta-data has changed, \a available will

    be true if the multimedia object has meta-data.

*/

/*!

    \fn void QMetaDataControl::writableChanged(bool writable)

    Signal a change in the writable status of meta-data, \a writable will be

    true if meta-data elements can be added or adjusted.

*/

#include "moc_qmetadatacontrol.cpp"

QT_END_NAMESPACE