org.dvb.media

Interface BackgroundVideoPresentationControl

All Superinterfaces:

Control, VideoPresentationControl

public interface BackgroundVideoPresentationControl
extends VideoPresentationControl

A control to support the setting and querying of the video presentation for background players.

Field Summary

Fields inherited from interface org.dvb.media.VideoPresentationControl

POS_CAP_FULL, POS_CAP_FULL_EVEN_LINES, POS_CAP_FULL_EVEN_LINES_IF_ENTIRE_VIDEO_ON_SCREEN, POS_CAP_FULL_IF_ENTIRE_VIDEO_ON_SCREEN, POS_CAP_OTHER

Method Summary

Methods

Modifier and Type	Method and Description
VideoTransformation	getClosestMatch(VideoTransformation t) This method takes a video transformation and returns the closest match of that video transformation that can be supported for the currently selected video.
VideoTransformation	getVideoTransformation() Return the current video transformation
boolean	setVideoTransformation(VideoTransformation t) Sets a new video transformation (clipping/scaling/positioning).

Methods inherited from interface org.dvb.media.VideoPresentationControl

getActiveVideoArea, getActiveVideoAreaOnScreen, getClipRegion, getHorizontalScalingFactors, getInputVideoSize, getPositioningCapability, getTotalVideoArea, getTotalVideoAreaOnScreen, getVerticalScalingFactors, getVideoSize, setClipRegion, supportsArbitraryHorizontalScaling, supportsArbitraryVerticalScaling, supportsClipping

Methods inherited from interface javax.media.Control

getControlComponent

Method Detail

setVideoTransformation

boolean setVideoTransformation(VideoTransformation t)

Sets a new video transformation (clipping/scaling/positioning). If the new video transformation is not supported, then the video transformation will not be changed at all (no best effort attempt is made).

Parameters:

t - the new video transformation

Returns:

true if the video transformation is supported and has been set, false otherwise.

getVideoTransformation

VideoTransformation getVideoTransformation()

Return the current video transformation

Returns:

the video transformation (clipping/scaling/positioning) that is currently used for displaying the video.

getClosestMatch

VideoTransformation getClosestMatch(VideoTransformation t)

This method takes a video transformation and returns the closest match of that video transformation that can be supported for the currently selected video. If the input video transformation can be supported, then the output video transformation will have the same parameters as the input video transformation. The definition of 'closest match' is implementation dependent.

Parameters:

t - the input video transformation

Returns:

the closest match to the input video transformation. If the input video transformation is supported, then the input video transformation will be returned (the same instance), otherwise a newly created instance will be returned.