Package org.opencastproject.workflow.handler.videogrid

Class VideoGridWorkflowOperationHandler

java.lang.Object

org.opencastproject.workflow.api.AbstractWorkflowOperationHandler

org.opencastproject.workflow.handler.videogrid.VideoGridWorkflowOperationHandler

All Implemented Interfaces:

WorkflowOperationHandler

public class VideoGridWorkflowOperationHandler
extends AbstractWorkflowOperationHandler

The workflow definition for handling multiple videos that have overlapping playtime, e.g. webcam videos from a video conference call. Checks which videos are currently playing and dynamically scales them to fit in a single video. Relies on a smil with videoBegin and duration times, as is created by ingest through addPartialTrack. Will pad sections where no video is playing with a background color. This includes beginning and end. Returns the final video to the target flavor

Nested Class Summary

Nested classes/interfaces inherited from class org.opencastproject.workflow.api.AbstractWorkflowOperationHandler

AbstractWorkflowOperationHandler.Configuration

Field Summary

Fields inherited from class org.opencastproject.workflow.api.AbstractWorkflowOperationHandler

description, id, serviceRegistry, SOURCE_FLAVOR, SOURCE_TAG, SOURCE_TAGS, TARGET_FLAVOR, TARGET_FLAVORS, TARGET_TAG, TARGET_TAGS

Constructor Summary

Constructors

Constructor	Description
VideoGridWorkflowOperationHandler()

Method Summary

Modifier and Type	Method	Description
void	setComposerService(ComposerService composerService)
protected void	setMediaInspectionService(MediaInspectionService inspectionService)
void	setServiceRegistry(ServiceRegistry serviceRegistry)	Sets the service registry.
void	setVideoGridService(VideoGridService videoGridService)
void	setWorkspace(Workspace workspace)	Service Callbacks
WorkflowOperationResult	start(WorkflowInstance workflowInstance, JobContext context)	Runs the workflow operation on this WorkflowInstance.

Methods inherited from class org.opencastproject.workflow.api.AbstractWorkflowOperationHandler

activate, applyTargetTagsToElement, asList, createResult, createResult, createResult, createResult, destroy, equals, getCfg, getConfig, getConfig, getConfig, getDescription, getFileNameFromElements, getId, getOptConfig, getOptConfig, getTagsAndFlavors, hashCode, setJobBarrierPollingInterval, skip, toString, waitForStatus, waitForStatus

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

VideoGridWorkflowOperationHandler

public VideoGridWorkflowOperationHandler()

Method Details

setWorkspace

public void setWorkspace(Workspace workspace)

Service Callbacks

setVideoGridService

public void setVideoGridService(VideoGridService videoGridService)

setMediaInspectionService

protected void setMediaInspectionService(MediaInspectionService inspectionService)

setComposerService

public void setComposerService(ComposerService composerService)

setServiceRegistry

public void setServiceRegistry(ServiceRegistry serviceRegistry)

Description copied from class: AbstractWorkflowOperationHandler

Sets the service registry. This method is here as a convenience for developers that need the registry to do job waiting.

Overrides:

setServiceRegistry in class AbstractWorkflowOperationHandler

Parameters:

serviceRegistry - the service registry

start

public WorkflowOperationResult start(WorkflowInstance workflowInstance,
 JobContext context)
                              throws WorkflowOperationException

Description copied from class: AbstractWorkflowOperationHandler

Runs the workflow operation on this WorkflowInstance. If the execution fails for some reason, this must throw a WorkflowOperationException in order to handle the problem gracefully. Runtime exceptions will cause the entire workflow instance to fail.

Specified by:

start in interface WorkflowOperationHandler

Specified by:

start in class AbstractWorkflowOperationHandler

Parameters:

workflowInstance - the workflow instance

context - the job context

Returns:

the WorkflowOperationResult containing a potentially modified MediaPackage and whether to put the workflow instance into a wait state.

Throws:

WorkflowOperationException - If the workflow operation fails to execute properly, and the default error handling should be invoked.

See Also:

• WorkflowOperationHandler.start(org.opencastproject.workflow.api.WorkflowInstance, JobContext)