MeeGo 1.2 Harmattan Developer Documentation Develop for the Nokia N9

QImageEncoderControl Class Reference

The QImageEncoderControl class provides access to the settings of a media service that performs image encoding. More...

 #include <QImageEncoderControl>

Inherits: QMediaControl.

This class was introduced in Qt Mobility 1.0.

Public Functions

virtual ~QImageEncoderControl ()
virtual QString imageCodecDescription ( const QString & codec ) const = 0
virtual QImageEncoderSettings imageSettings () const = 0
virtual void setImageSettings ( const QImageEncoderSettings & settings ) = 0
virtual QStringList supportedImageCodecs () const = 0
virtual QList<QSize> supportedResolutions ( const QImageEncoderSettings & settings, bool * continuous = 0 ) const = 0
  • 29 public functions inherited from QObject

Protected Functions

QImageEncoderControl ( QObject * parent = 0 )
  • 7 protected functions inherited from QObject

Macros

QImageEncoderControl_iid

Additional Inherited Members

  • 1 property inherited from QObject
  • 1 public slot inherited from QObject
  • 1 signal inherited from QObject
  • 1 public variable inherited from QObject
  • 4 static public members inherited from QObject
  • 2 protected variables inherited from QObject

Detailed Description

The QImageEncoderControl class provides access to the settings of a media service that performs image encoding.

If a QMediaService supports encoding image data it will implement QImageEncoderControl. This control allows to set image encoding settings and provides functions for quering supported image codecs and resolutions.

The interface name of QImageEncoderControl is com.nokia.Qt.QImageEncoderControl/1.0 as defined in QImageEncoderControl_iid.

See also QImageEncoderSettings and QMediaService::requestControl().

Member Function Documentation

QImageEncoderControl::QImageEncoderControl ( QObject * parent = 0 ) [protected]

Constructs a new image encoder control object with the given parent

QImageEncoderControl::~QImageEncoderControl () [virtual]

Destroys the image encoder control.

QString QImageEncoderControl::imageCodecDescription ( const QString & codec ) const [pure virtual]

Returns a description of an image codec.

This function was introduced in Qt Mobility 1.0.

QImageEncoderSettings QImageEncoderControl::imageSettings () const [pure virtual]

Returns the currently used image encoder settings.

The returned value may be different tha passed to QImageEncoderControl::setImageSettings() if the settings contains the default or undefined parameters. In this case if the undefined parameters are already resolved, they should be returned.

This function was introduced in Qt Mobility 1.0.

See also setImageSettings().

void QImageEncoderControl::setImageSettings ( const QImageEncoderSettings & settings ) [pure virtual]

Sets the selected image encoder settings.

This function was introduced in Qt Mobility 1.0.

See also imageSettings().

QStringList QImageEncoderControl::supportedImageCodecs () const [pure virtual]

Returns a list of supported image codecs.

This function was introduced in Qt Mobility 1.0.

QList<QSize> QImageEncoderControl::supportedResolutions ( const QImageEncoderSettings & settings, bool * continuous = 0 ) const [pure virtual]

Returns a list of supported resolutions.

If non null image settings parameter is passed, the returned list is reduced to resolutions supported with partial settings applied. It can be used to query the list of resolutions, supported by specific image codec.

If the encoder supports arbitrary resolutions within the supported resolutions range, *continuous is set to true, otherwise *continuous is set to false.

This function was introduced in Qt Mobility 1.0.

Macro Documentation

QImageEncoderControl_iid

com.nokia.Qt.QImageEncoderControl/1.0

Defines the interface name of the QImageEncoderControl class.