/**
* Licensed to The Apereo Foundation under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*
*
* The Apereo Foundation licenses this file to you under the Educational
* Community License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License
* at:
*
* http://opensource.org/licenses/ecl2.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*
*/
package org.opencastproject.workflow.handler.videoeditor;
import org.opencastproject.job.api.Job;
import org.opencastproject.job.api.JobContext;
import org.opencastproject.mediapackage.Catalog;
import org.opencastproject.mediapackage.MediaPackage;
import org.opencastproject.mediapackage.MediaPackageElement;
import org.opencastproject.mediapackage.MediaPackageElementBuilder;
import org.opencastproject.mediapackage.MediaPackageElementBuilderFactory;
import org.opencastproject.mediapackage.MediaPackageElementFlavor;
import org.opencastproject.mediapackage.Track;
import org.opencastproject.mediapackage.selector.TrackSelector;
import org.opencastproject.silencedetection.api.SilenceDetectionFailedException;
import org.opencastproject.silencedetection.api.SilenceDetectionService;
import org.opencastproject.smil.api.SmilException;
import org.opencastproject.smil.api.SmilService;
import org.opencastproject.smil.entity.api.Smil;
import org.opencastproject.workflow.api.AbstractWorkflowOperationHandler;
import org.opencastproject.workflow.api.WorkflowInstance;
import org.opencastproject.workflow.api.WorkflowOperationException;
import org.opencastproject.workflow.api.WorkflowOperationResult;
import org.opencastproject.workflow.api.WorkflowOperationResult.Action;
import org.opencastproject.workspace.api.Workspace;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.InputStream;
import java.net.URI;
import java.util.Collection;
import java.util.SortedMap;
import java.util.TreeMap;
/**
* workflowoperationhandler for silencedetection executes the silencedetection and adds a SMIL document to the
* mediapackage containing the cutting points
*/
public class SilenceDetectionWorkflowOperationHandler extends AbstractWorkflowOperationHandler {
/** Logger */
private static final Logger logger = LoggerFactory.getLogger(SilenceDetectionWorkflowOperationHandler.class);
/** Name of the configuration option that provides the source flavors we are looking for. */
private static final String SOURCE_FLAVORS_PROPERTY = "source-flavors";
/** Name of the configuration option that provides the source flavor we are looking for. */
private static final String SOURCE_FLAVOR_PROPERTY = "source-flavor";
/** Name of the configuration option that provides the smil flavor subtype we will produce. */
private static final String SMIL_FLAVOR_SUBTYPE_PROPERTY = "smil-flavor-subtype";
/** Name of the configuration option that provides the smil target flavor we will produce. */
private static final String SMIL_TARGET_FLAVOR_PROPERTY = "target-flavor";
/** Name of the configuration option for track flavors to reference in generated smil. */
private static final String REFERENCE_TRACKS_FLAVOR_PROPERTY = "reference-tracks-flavor";
/** Name of the configuration option that provides the smil file name */
private static final String TARGET_FILE_NAME = "smil.smil";
/** The configuration options for this handler */
private static final SortedMap<String, String> CONFIG_OPTIONS;
static {
CONFIG_OPTIONS = new TreeMap<String, String>();
CONFIG_OPTIONS.put(SOURCE_FLAVORS_PROPERTY, "The flavors for source files (tracks containing audio stream).");
CONFIG_OPTIONS.put(SOURCE_FLAVOR_PROPERTY, "The flavor for source files (tracks containing audio stream).");
CONFIG_OPTIONS.put(SMIL_FLAVOR_SUBTYPE_PROPERTY, "The flavor subtype for target smil files.");
CONFIG_OPTIONS.put(SMIL_TARGET_FLAVOR_PROPERTY, "The flavor for target smil files.");
CONFIG_OPTIONS.put(REFERENCE_TRACKS_FLAVOR_PROPERTY,
"The track flavors for referencing in smil as source files. If not set, fallback to "
+ SOURCE_FLAVORS_PROPERTY);
}
/** The silence detection service. */
private SilenceDetectionService detetionService;
/** The smil service for smil parsing. */
private SmilService smilService;
/** The workspace. */
private Workspace workspace;
/**
* {@inheritDoc}
*
* @see org.opencastproject.workflow.api.WorkflowOperationHandler#getConfigurationOptions()
*/
@Override
public SortedMap<String, String> getConfigurationOptions() {
return CONFIG_OPTIONS;
}
@Override
public WorkflowOperationResult start(WorkflowInstance workflowInstance, JobContext context)
throws WorkflowOperationException {
MediaPackage mp = workflowInstance.getMediaPackage();
logger.debug("Start silence detection workflow operation for mediapackage {}", mp.getIdentifier().compact());
String sourceFlavors = StringUtils.trimToNull(workflowInstance.getCurrentOperation().getConfiguration(
SOURCE_FLAVORS_PROPERTY));
String sourceFlavor = StringUtils.trimToNull(workflowInstance.getCurrentOperation().getConfiguration(
SOURCE_FLAVOR_PROPERTY));
String smilFlavorSubType = StringUtils.trimToNull(workflowInstance.getCurrentOperation().getConfiguration(
SMIL_FLAVOR_SUBTYPE_PROPERTY));
String smilTargetFlavorString = StringUtils.trimToNull(workflowInstance.getCurrentOperation().getConfiguration(
SMIL_TARGET_FLAVOR_PROPERTY));
MediaPackageElementFlavor smilTargetFlavor = null;
if (smilTargetFlavorString != null)
smilTargetFlavor = MediaPackageElementFlavor.parseFlavor(smilTargetFlavorString);
if (sourceFlavor == null && sourceFlavors == null) {
throw new WorkflowOperationException(String.format("No %s or %s have been specified", SOURCE_FLAVOR_PROPERTY,
SOURCE_FLAVORS_PROPERTY));
}
if (smilFlavorSubType == null && smilTargetFlavor == null) {
throw new WorkflowOperationException(String.format("No %s or %s have been specified",
SMIL_FLAVOR_SUBTYPE_PROPERTY, SMIL_TARGET_FLAVOR_PROPERTY));
}
if (sourceFlavors != null && smilTargetFlavor != null) {
throw new WorkflowOperationException(String.format("Can't use %s and %s together", SOURCE_FLAVORS_PROPERTY,
SMIL_TARGET_FLAVOR_PROPERTY));
}
final String finalSourceFlavors;
if (smilTargetFlavor != null) {
finalSourceFlavors = sourceFlavor;
} else {
finalSourceFlavors = sourceFlavors;
}
String referenceTracksFlavor = StringUtils.trimToNull(workflowInstance.getCurrentOperation().getConfiguration(
REFERENCE_TRACKS_FLAVOR_PROPERTY));
if (referenceTracksFlavor == null)
referenceTracksFlavor = finalSourceFlavors;
TrackSelector trackSelector = new TrackSelector();
for (String flavor : asList(finalSourceFlavors)) {
trackSelector.addFlavor(flavor);
}
Collection<Track> sourceTracks = trackSelector.select(mp, false);
if (sourceTracks.isEmpty()) {
logger.info("No source tracks found, skip silence detection");
return createResult(mp, Action.SKIP);
}
trackSelector = new TrackSelector();
for (String flavor : asList(referenceTracksFlavor)) {
trackSelector.addFlavor(flavor);
}
Collection<Track> referenceTracks = trackSelector.select(mp, false);
if (referenceTracks.isEmpty()) {
// REFERENCE_TRACKS_FLAVOR_PROPERTY was set to wrong value
throw new WorkflowOperationException(String.format("No tracks found filtered by flavor(s) '%s'",
referenceTracksFlavor));
}
MediaPackageElementBuilder mpeBuilder = MediaPackageElementBuilderFactory.newInstance().newElementBuilder();
for (Track sourceTrack : sourceTracks) {
// Skip over track with no audio stream
if (!sourceTrack.hasAudio()) {
logger.info("Skipping silence detection of track {} since it has no audio", sourceTrack);
continue;
}
logger.info("Executing silence detection on track {}", sourceTrack.getIdentifier());
try {
Job detectionJob = detetionService.detect(sourceTrack,
referenceTracks.toArray(new Track[referenceTracks.size()]));
if (!waitForStatus(detectionJob).isSuccess()) {
throw new WorkflowOperationException("Silence Detection failed");
}
Smil smil = smilService.fromXml(detectionJob.getPayload()).getSmil();
InputStream is = null;
try {
is = IOUtils.toInputStream(smil.toXML(), "UTF-8");
URI smilURI = workspace.put(mp.getIdentifier().compact(), smil.getId(), TARGET_FILE_NAME, is);
MediaPackageElementFlavor smilFlavor = smilTargetFlavor;
if (smilFlavor == null)
smilFlavor = new MediaPackageElementFlavor(sourceTrack.getFlavor().getType(), smilFlavorSubType);
Catalog catalog = (Catalog) mpeBuilder.elementFromURI(smilURI, MediaPackageElement.Type.Catalog, smilFlavor);
catalog.setIdentifier(smil.getId());
mp.add(catalog);
} catch (Exception ex) {
throw new WorkflowOperationException(String.format(
"Failed to put smil into workspace. Silence detection for track %s failed",
sourceTrack.getIdentifier()), ex);
} finally {
IOUtils.closeQuietly(is);
}
logger.info("Finished silence detection on track {}", sourceTrack.getIdentifier());
} catch (SilenceDetectionFailedException ex) {
throw new WorkflowOperationException(String.format("Failed to create silence detection job for track %s",
sourceTrack.getIdentifier()));
} catch (SmilException ex) {
throw new WorkflowOperationException(String.format(
"Failed to get smil from silence detection job for track %s", sourceTrack.getIdentifier()));
}
}
logger.debug("Finished silence detection workflow operation for mediapackage {}", mp.getIdentifier().compact());
return createResult(mp, Action.CONTINUE);
}
@Override
public void activate(ComponentContext cc) {
super.activate(cc);
logger.info("Registering silence detection workflow operation handler");
}
public void setDetectionService(SilenceDetectionService detectionService) {
this.detetionService = detectionService;
}
public void setSmilService(SmilService smilService) {
this.smilService = smilService;
}
public void setWorkspace(Workspace workspace) {
this.workspace = workspace;
}
}