Package org.opencastproject.silencedetection.impl

Class SilenceDetectionServiceImpl

java.lang.Object

org.opencastproject.job.api.AbstractJobProducer

org.opencastproject.silencedetection.impl.SilenceDetectionServiceImpl

All Implemented Interfaces:

JobProducer, SilenceDetectionService

public class SilenceDetectionServiceImpl
extends AbstractJobProducer
implements SilenceDetectionService

Implementation of SilenceDetectionService using FFmpeg.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	JOB_LOAD_KEY
protected OrganizationDirectoryService	organizationDirectoryService	The organization directory service
protected SecurityService	securityService	The security service
protected SmilService	smilService
protected UserDirectoryService	userDirectoryService	The user directory service

Fields inherited from class org.opencastproject.job.api.AbstractJobProducer

ACCEPT_JOB_LOADS_EXCEEDING_PROPERTY, acceptJobLoadsExeedingMaxLoad, DEFAULT_ACCEPT_JOB_LOADS_EXCEEDING, executor, jobType

Fields inherited from interface org.opencastproject.silencedetection.api.SilenceDetectionService

JOB_TYPE

Constructor Summary

Constructors

Constructor	Description
SilenceDetectionServiceImpl()

Method Summary

Modifier and Type	Method	Description
void	activate(org.osgi.framework.BundleContext bundleContext, org.osgi.service.component.ComponentContext context)
protected void	deactivate(org.osgi.service.component.ComponentContext context)
Job	detect(Track sourceTrack)	Run silence detection on audio (visual) file.
Job	detect(Track sourceTrack, Track[] referenceTracks)	Run silence detection on audio (visual) file.
protected Smil	generateSmil(MediaSegments segments, List<Track> referenceTracks)	Create a smil from given parameters.
protected OrganizationDirectoryService	getOrganizationDirectoryService()	Returns a reference to the organization directory service.
protected SecurityService	getSecurityService()	Returns a reference to the security service
protected ServiceRegistry	getServiceRegistry()	Returns a reference to the service registry.
protected UserDirectoryService	getUserDirectoryService()	Returns a reference to the user directory service
protected String	process(Job job)	Asks the overriding class to process the arguments using the given operation.
protected MediaSegments	runDetection(Track track)	Run silence detection on the source track and returns MediaSegments XML as string.
void	setOrganizationDirectoryService(OrganizationDirectoryService organizationDirectoryService)
void	setSecurityService(SecurityService securityService)
void	setServiceRegistry(ServiceRegistry serviceRegistry)
void	setSmilService(SmilService smilService)
void	setUserDirectoryService(UserDirectoryService userDirectoryService)
void	setWorkspace(Workspace workspace)

Methods inherited from class org.opencastproject.job.api.AbstractJobProducer

acceptJob, activate, countJobs, finallyUpdateJob, getJobType, incident, isReadyToAccept, isReadyToAcceptJobs

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

JOB_LOAD_KEY

public static final String JOB_LOAD_KEY

See Also:

• Constant Field Values

organizationDirectoryService

protected OrganizationDirectoryService organizationDirectoryService

The organization directory service

securityService

protected SecurityService securityService

The security service

userDirectoryService

protected UserDirectoryService userDirectoryService

The user directory service

smilService

protected SmilService smilService

Constructor Details

SilenceDetectionServiceImpl

public SilenceDetectionServiceImpl()

Method Details

detect

public Job detect(Track sourceTrack)
           throws SilenceDetectionFailedException

Run silence detection on audio (visual) file.

Specified by:

detect in interface SilenceDetectionService

Parameters:

sourceTrack - track to detect non silent segments from

Returns:

Job detection job

Throws:

SilenceDetectionFailedException - if fails

See Also:

• SilenceDetectionService.detect(org.opencastproject.mediapackage.Track)

detect

public Job detect(Track sourceTrack,
 Track[] referenceTracks)
           throws SilenceDetectionFailedException

Run silence detection on audio (visual) file.

Specified by:

detect in interface SilenceDetectionService

Parameters:

sourceTrack - track to detect non silent segments from

referenceTracks - tracks to reference in smil file instead of sourceTrack

Returns:

Job detection job

Throws:

SilenceDetectionFailedException - if fails

See Also:

• SilenceDetectionService.detect(org.opencastproject.mediapackage.Track, org.opencastproject.mediapackage.Track[])

process

protected String process(Job job)
                  throws SilenceDetectionFailedException,
SmilException,
MediaPackageException

Description copied from class: AbstractJobProducer

Asks the overriding class to process the arguments using the given operation. The result will be added to the associated job as the payload.

Specified by:

process in class AbstractJobProducer

Parameters:

job - the job to process

Returns:

the operation result

Throws:

SilenceDetectionFailedException

SmilException

MediaPackageException

runDetection

protected MediaSegments runDetection(Track track)
                              throws SilenceDetectionFailedException

Run silence detection on the source track and returns MediaSegments XML as string. Source track should have an audio stream. All detected MediaSegments (one or more) are non silent sequences.

Parameters:

track - track where to run silence detection

Returns:

MediaSegments Xml as String

Throws:

SilenceDetectionFailedException - if an error occures

generateSmil

protected Smil generateSmil(MediaSegments segments,
 List<Track> referenceTracks)
                     throws SmilException

Create a smil from given parameters.

Parameters:

segments - media segment list with timestamps

referenceTracks - tracks to put as media segment source files

Returns:

generated smil

Throws:

SmilException - if smil creation failed

getServiceRegistry

protected ServiceRegistry getServiceRegistry()

Description copied from class: AbstractJobProducer

Returns a reference to the service registry.

Specified by:

getServiceRegistry in class AbstractJobProducer

Returns:

the service registry

getSecurityService

protected SecurityService getSecurityService()

Description copied from class: AbstractJobProducer

Returns a reference to the security service

Specified by:

getSecurityService in class AbstractJobProducer

Returns:

the security service

getUserDirectoryService

protected UserDirectoryService getUserDirectoryService()

Description copied from class: AbstractJobProducer

Returns a reference to the user directory service

Specified by:

getUserDirectoryService in class AbstractJobProducer

Returns:

the user directory service

getOrganizationDirectoryService

protected OrganizationDirectoryService getOrganizationDirectoryService()

Description copied from class: AbstractJobProducer

Returns a reference to the organization directory service.

Specified by:

getOrganizationDirectoryService in class AbstractJobProducer

Returns:

the organization directory service

activate

public void activate(org.osgi.framework.BundleContext bundleContext,
 org.osgi.service.component.ComponentContext context)

deactivate

protected void deactivate(org.osgi.service.component.ComponentContext context)

setServiceRegistry

public void setServiceRegistry(ServiceRegistry serviceRegistry)

setWorkspace

public void setWorkspace(Workspace workspace)

setSecurityService

public void setSecurityService(SecurityService securityService)

setUserDirectoryService

public void setUserDirectoryService(UserDirectoryService userDirectoryService)

setOrganizationDirectoryService

public void setOrganizationDirectoryService(OrganizationDirectoryService organizationDirectoryService)

setSmilService

public void setSmilService(SmilService smilService)