QMetaDataReaderControl Class Reference
The QMetaDataReaderControl class provides read access to the meta-data of a QMediaService's media. More...
#include <QMetaDataReaderControl>
This class is under development and is subject to change.
Inherits QMediaControl.
Public Functions
~QMetaDataReaderControl () | |
virtual QStringList | availableExtendedMetaData () const = 0 |
virtual QList<QtMultimediaKit::MetaData> | availableMetaData () const = 0 |
virtual QVariant | extendedMetaData ( const QString & key ) const = 0 |
virtual bool | isMetaDataAvailable () const = 0 |
virtual QVariant | metaData ( QtMultimediaKit::MetaData key ) const = 0 |
Signals
void | metaDataAvailableChanged ( bool available ) |
void | metaDataChanged () |
Protected Functions
QMetaDataReaderControl ( QObject * parent = 0 ) |
Macros
QMetaDataReaderControl_iid |
Detailed Description
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 well defined keys in the QtMultimediaKit::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 QMetaDataReaderControl.
The interface name of QMetaDataReaderControl is com.nokia.Qt.QMetaDataReaderControl/1.0 as defined in QMetaDataReaderControl_iid.