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QMediaStreamsControl Class ReferenceThe QMediaStreamsControl class provides a media stream selection control. More... #include <QMediaStreamsControl> This class is under development and is subject to change. Inherits QMediaControl. Public Types
Public Functions
Signals
Protected Functions
Macros
Additional Inherited Members
Detailed DescriptionThe QMediaStreamsControl class provides a media stream selection control. The QMediaStreamsControl class provides descriptions of the available media streams and allows individual streams to be activated and deactivated. The interface name of QMediaStreamsControl is com.nokia.Qt.MediaStreamsControl as defined in QMediaStreamsControl_iid. See also QMediaService::control(). Member Type Documentation
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| Constant | Value | Description |
|---|---|---|
| QMediaStreamsControl::AudioStream | 2 | Audio stream. |
| QMediaStreamsControl::VideoStream | 1 | Video stream. |
| QMediaStreamsControl::SubPictureStream | 3 | Subpicture or teletext stream. |
| QMediaStreamsControl::UnknownStream | 0 | The stream type is unknown. |
| QMediaStreamsControl::DataStream | 4 |
Member Function Documentation
QMediaStreamsControl::QMediaStreamsControl ( QObject * parent = 0 ) [protected]
Constructs a new media streams control with the given parent.
QMediaStreamsControl::~QMediaStreamsControl () [virtual]
Destroys a media streams control.
void QMediaStreamsControl::activeStreamsChanged () [signal]
The signal is emited when the active streams list is changed.
bool QMediaStreamsControl::isActive ( int stream ) [pure virtual]
Returns true if the media stream is active.
QVariant QMediaStreamsControl::metaData ( int stream, QtMedia::MetaData key ) [pure virtual]
Returns the meta-data value of key for a given stream.
Useful metadata keya are QtMedia::Title, QtMedia::Description and QtMedia::Language.
void QMediaStreamsControl::setActive ( int stream, bool state ) [pure virtual]
Sets the active state of a media stream.
Setting the active state of a media stream to true will activate it. If any other stream of the same type was previously active it will be deactivated. Setting the active state fo a media stream to false will deactivate it.
See also isActive().
int QMediaStreamsControl::streamCount () [pure virtual]
Returns the number of media streams.
StreamType QMediaStreamsControl::streamType ( int stream ) [pure virtual]
Return the type of a media stream.
void QMediaStreamsControl::streamsChanged () [signal]
The signal is emited when the available streams list is changed.
Macro Documentation
QMediaStreamsControl_iid
com.nokia.Qt.MediaStreamsControl
Defines the interface name of the QMediaStreamsControl class.
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