cx::VideoService Class Reference

Provides access to all video sources in the system, and connection stuff for the sources. More...

#include <cxVideoService.h>

Inheritance diagram for cx::VideoService:

Signals
void	connected (bool on)
void	activeVideoSourceChanged ()
void	fps (int)
void	StreamerServiceAdded (StreamerService *service)
void	StreamerServiceRemoved (StreamerService *service)

Public Member Functions
virtual void	setActiveVideoSource (QString uid)=0
virtual VideoSourcePtr	getActiveVideoSource ()=0
virtual std::vector< VideoSourcePtr >	getVideoSources ()=0
virtual void	setConnectionMethod (QString connectionMethod)=0
virtual QString	getConnectionMethod ()=0
virtual void	openConnection ()=0
virtual void	closeConnection ()=0
virtual bool	isConnected () const =0
virtual void	setPlaybackMode (PlaybackTimePtr controller)=0
virtual std::vector< TimelineEvent >	getPlaybackEvents ()=0
virtual StreamerServicePtr	getStreamerService (QString uid)=0
virtual QList< StreamerServicePtr >	getStreamerServices ()=0
virtual bool	isNull ()=0

Static Public Member Functions
static VideoServicePtr	getNullObject ()

Detailed Description

Provides access to all video sources in the system, and connection stuff for the sources.

VideoService Overview

VideoService provides a simple image stream class to its users, hiding details. VideoService receives images over OpenIGTLink from an external server.

Time synchronization using Network Time Protocol (NTP) and temporal calibration.

VideoService and Video Pipeline

The diagram displays all major classes concerned with realtime streaming. VideoSource is the core interface that provides connection to a realtime streaming source.

VideoSource has to main users: Rendering to screen and recording to disk. VideoGraphics contains the visualization functionality that the Reps uses when rendering in the Views. VideoGraphics needs a Probe to provide position information. Probe also wraps the VideoSource with its own ProbeAdapterVideoSource (using the adapter pattern) in order to add special information not known to the VideoSource, such as pixel spacing. The recording functionality is not shown. VideoSourceRecorder handles this on the basic level.

VideoConnectionManager manages the connection to the streaming source. The implementation class OpenIGTLinkVideoSource uses the OpenIGTLink protocol to receive data over TCP/IP. The actual data retrieval is done in the internal thread class IGTLinkClient.

The OpenIGTLinkRTSource is dependent on an external IGTLink server. Optionally, the VideoConnectionManager can create this server on the local machine.

Date

2011-05-31

2014-09-19

Author

Christian Askeland, SINTEF

Ole Vegard Solberg, SINTEF

Definition at line 75 of file cxVideoService.h.

Member Function Documentation

void cx::VideoService::activeVideoSourceChanged ( )

signal

Emitted when a video source is set to active, OR when the available set of sources are changed.

virtual void cx::VideoService::closeConnection ( )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

void cx::VideoService::connected ( bool  on )

signal

void cx::VideoService::fps ( int  )

signal

virtual VideoSourcePtr cx::VideoService::getActiveVideoSource ( )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual QString cx::VideoService::getConnectionMethod ( )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

VideoServicePtr cx::VideoService::getNullObject ( )

static

Definition at line 19 of file cxVideoService.cpp.

virtual std::vector<TimelineEvent> cx::VideoService::getPlaybackEvents ( )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual StreamerServicePtr cx::VideoService::getStreamerService ( QString  uid )

pure virtual

Implemented in cx::VideoServiceProxy, cx::VideoServiceNull, and cx::VideoImplService.

virtual QList<StreamerServicePtr> cx::VideoService::getStreamerServices ( )

pure virtual

Implemented in cx::VideoServiceProxy, cx::VideoServiceNull, and cx::VideoImplService.

virtual std::vector<VideoSourcePtr> cx::VideoService::getVideoSources ( )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual bool cx::VideoService::isConnected ( ) const

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual bool cx::VideoService::isNull ( )

pure virtual

Implemented in cx::VideoServiceNull, cx::VideoImplService, and cx::VideoServiceProxy.

virtual void cx::VideoService::openConnection ( )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual void cx::VideoService::setActiveVideoSource ( QString  uid )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual void cx::VideoService::setConnectionMethod ( QString  connectionMethod )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

virtual void cx::VideoService::setPlaybackMode ( PlaybackTimePtr  controller )

pure virtual

Implemented in cx::VideoImplService, cx::VideoServiceProxy, and cx::VideoServiceNull.

void cx::VideoService::StreamerServiceAdded ( StreamerService *  service )

signal

void cx::VideoService::StreamerServiceRemoved ( StreamerService *  service )

signal

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The documentation for this class was generated from the following files:

• /media/dev/bamboodrive/b/xml-data/build-dir/CX-TB-JOB1/CX/CX/source/resource/core/Video/cxVideoService.h
• /media/dev/bamboodrive/b/xml-data/build-dir/CX-TB-JOB1/CX/CX/source/resource/core/Video/cxVideoService.cpp