Examples with Job org.opencastproject.job.api.Job used on opensource projects

Example 61 with Job

use of org.opencastproject.job.api.Job in project opencast by opencast.

the class VideoSegmenterTest method testAnalyzeOptimization.

@Test
public void testAnalyzeOptimization() throws Exception {
    Job receipt = vsegmenter1.segment(track1);
    JobBarrier jobBarrier = new JobBarrier(null, serviceRegistry1, 1000, receipt);
    jobBarrier.waitForJobs();
    Catalog catalog = (Catalog) MediaPackageElementParser.getFromXml(receipt.getPayload());
    Mpeg7Catalog mpeg7 = new Mpeg7CatalogImpl(catalog.getURI().toURL().openStream());
    // Is there multimedia content in the mpeg7?
    assertTrue("Audiovisual content was expected", mpeg7.hasVideoContent());
    assertNotNull("Audiovisual content expected", mpeg7.multimediaContent().next().elements().hasNext());
    MultimediaContentType contentType = mpeg7.multimediaContent().next().elements().next();
    // Is there at least one segment?
    TemporalDecomposition<? extends Segment> segments = contentType.getTemporalDecomposition();
    Iterator<? extends Segment> si = segments.segments();
    assertTrue(si.hasNext());
    // Is the error of optimization small enough?
    int segmentCounter = 0;
    for (; si.hasNext(); ++segmentCounter) {
        si.next();
    }
    float error = Math.abs((segmentCounter - vsegmenter1.prefNumber) / (float) vsegmenter1.prefNumber);
    assertTrue("Error of Optimization is too big", error <= vsegmenter1.maxError);
}

Example 62 with Job

use of org.opencastproject.job.api.Job in project opencast by opencast.

the class VideoSegmenterTest method testAnalyze.

@Test
public void testAnalyze() throws Exception {
    Job receipt = vsegmenter.segment(track);
    JobBarrier jobBarrier = new JobBarrier(null, serviceRegistry, 1000, receipt);
    jobBarrier.waitForJobs();
    Catalog catalog = (Catalog) MediaPackageElementParser.getFromXml(receipt.getPayload());
    Mpeg7Catalog mpeg7 = new Mpeg7CatalogImpl(catalog.getURI().toURL().openStream());
    // Is there multimedia content in the mpeg7?
    assertTrue("Audiovisual content was expected", mpeg7.hasVideoContent());
    assertNotNull("Audiovisual content expected", mpeg7.multimediaContent().next().elements().hasNext());
    MultimediaContentType contentType = mpeg7.multimediaContent().next().elements().next();
    // Is there at least one segment?
    TemporalDecomposition<? extends Segment> segments = contentType.getTemporalDecomposition();
    Iterator<? extends Segment> si = segments.segments();
    assertTrue(si.hasNext());
    Segment firstSegment = si.next();
    MediaTime firstSegmentMediaTime = firstSegment.getMediaTime();
    long startTime = firstSegmentMediaTime.getMediaTimePoint().getTimeInMilliseconds();
    long duration = firstSegmentMediaTime.getMediaDuration().getDurationInMilliseconds();
    assertEquals("Unexpected start time of first segment", 0, startTime);
    assertEquals("Unexpected duration of first segment", firstSegmentDuration, duration);
    // What about the second one?
    assertTrue("Video is expected to have more than one segment", si.hasNext());
    Segment secondSegment = si.next();
    MediaTime secondSegmentMediaTime = secondSegment.getMediaTime();
    startTime = secondSegmentMediaTime.getMediaTimePoint().getTimeInMilliseconds();
    duration = secondSegmentMediaTime.getMediaDuration().getDurationInMilliseconds();
    assertEquals("Unexpected start time of second segment", firstSegmentDuration, startTime);
    assertEquals("Unexpected duration of second segment", secondSegmentDuration, duration);
    // There should be no third segment
    assertFalse("Found an unexpected third video segment", si.hasNext());
}

Example 63 with Job

use of org.opencastproject.job.api.Job in project opencast by opencast.

the class VideoSegmenterTest method testAnalyzeOptimizedList.

@Test
public void testAnalyzeOptimizedList() throws Exception {
    Job receipt = vsegmenter.segment(track);
    JobBarrier jobBarrier = new JobBarrier(null, serviceRegistry, 1000, receipt);
    jobBarrier.waitForJobs();
    Catalog catalog = (Catalog) MediaPackageElementParser.getFromXml(receipt.getPayload());
    Mpeg7Catalog mpeg7 = new Mpeg7CatalogImpl(catalog.getURI().toURL().openStream());
    List<OptimizationStep> optimizedList = new LinkedList<OptimizationStep>();
    OptimizationStep firstStep = new OptimizationStep(10, 0.015f, 46, 41, mpeg7, null);
    OptimizationStep secondStep = new OptimizationStep(10, 0.167f, 34, 41, mpeg7, null);
    OptimizationStep thirdStep = new OptimizationStep(10, 0.011f, 44, 41, mpeg7, null);
    OptimizationStep fourthStep = new OptimizationStep(10, 0.200f, 23, 41, mpeg7, null);
    // ~  0.122
    float error1 = (46 - 41) / (float) 41;
    // ~ -0.171
    float error2 = (34 - 41) / (float) 41;
    // ~  0.073
    float error3 = (44 - 41) / (float) 41;
    // ~ -0.439
    float error4 = (23 - 41) / (float) 41;
    optimizedList.add(firstStep);
    optimizedList.add(secondStep);
    optimizedList.add(thirdStep);
    optimizedList.add(fourthStep);
    Collections.sort(optimizedList);
    // check if the errors were calculated correctly and  whether the elements are in the correct order
    assertEquals("first element of optimized list incorrect", error3, optimizedList.get(0).getError(), 0.0001f);
    assertEquals("second element of optimized list incorrect", error1, optimizedList.get(1).getError(), 0.0001f);
    assertEquals("third element of optimized list incorrect", error4, optimizedList.get(2).getError(), 0.0001f);
    assertEquals("fourth element of optimized list incorrect", error2, optimizedList.get(3).getError(), 0.0001f);
    assertTrue("first error in optimized list is not positive", optimizedList.get(0).getError() >= 0);
    assertTrue("second error in optimized list is not bigger than first", optimizedList.get(1).getError() > optimizedList.get(0).getError());
    assertTrue("third error in optimized list is not negative", optimizedList.get(2).getError() < 0);
    assertTrue("fourth error in optimized list is smaller than third", optimizedList.get(3).getError() > optimizedList.get(2).getError());
}

Example 64 with Job

use of org.opencastproject.job.api.Job in project opencast by opencast.

the class VideoSegmenterWorkflowOperationHandler method start.

/**
 * {@inheritDoc}
 *
 * @see org.opencastproject.workflow.api.WorkflowOperationHandler#start(org.opencastproject.workflow.api.WorkflowInstance,
 *      JobContext)
 */
public WorkflowOperationResult start(final WorkflowInstance workflowInstance, JobContext context) throws WorkflowOperationException {
    logger.debug("Running video segmentation on workflow {}", workflowInstance.getId());
    WorkflowOperationInstance operation = workflowInstance.getCurrentOperation();
    MediaPackage mediaPackage = workflowInstance.getMediaPackage();
    // Find movie track to analyze
    String trackFlavor = StringUtils.trimToNull(operation.getConfiguration(PROP_ANALYSIS_TRACK_FLAVOR));
    List<String> targetTags = asList(operation.getConfiguration(PROP_TARGET_TAGS));
    List<Track> candidates = new ArrayList<Track>();
    if (trackFlavor != null)
        candidates.addAll(Arrays.asList(mediaPackage.getTracks(MediaPackageElementFlavor.parseFlavor(trackFlavor))));
    else
        candidates.addAll(Arrays.asList(mediaPackage.getTracks(MediaPackageElements.PRESENTATION_SOURCE)));
    // Remove unsupported tracks (only those containing video can be segmented)
    Iterator<Track> ti = candidates.iterator();
    while (ti.hasNext()) {
        Track t = ti.next();
        if (!t.hasVideo())
            ti.remove();
    }
    // Found one?
    if (candidates.size() == 0) {
        logger.info("No matching tracks available for video segmentation in workflow {}", workflowInstance);
        return createResult(Action.CONTINUE);
    }
    // More than one left? Let's be pragmatic...
    if (candidates.size() > 1) {
        logger.info("Found more than one track to segment, choosing the first one ({})", candidates.get(0));
    }
    Track track = candidates.get(0);
    // Segment the media package
    Catalog mpeg7Catalog = null;
    Job job = null;
    try {
        job = videosegmenter.segment(track);
        if (!waitForStatus(job).isSuccess()) {
            throw new WorkflowOperationException("Video segmentation of " + track + " failed");
        }
        mpeg7Catalog = (Catalog) MediaPackageElementParser.getFromXml(job.getPayload());
        mediaPackage.add(mpeg7Catalog);
        mpeg7Catalog.setURI(workspace.moveTo(mpeg7Catalog.getURI(), mediaPackage.getIdentifier().toString(), mpeg7Catalog.getIdentifier(), "segments.xml"));
        mpeg7Catalog.setReference(new MediaPackageReferenceImpl(track));
        // Add target tags
        for (String tag : targetTags) {
            mpeg7Catalog.addTag(tag);
        }
    } catch (Exception e) {
        throw new WorkflowOperationException(e);
    }
    logger.debug("Video segmentation completed");
    return createResult(mediaPackage, Action.CONTINUE, job.getQueueTime());
}

Example 65 with Job

use of org.opencastproject.job.api.Job in project opencast by opencast.

the class WaveformServiceRemote method createWaveformImage.

/**
 * Takes the given track and returns the job that will create an waveform image using a remote service.
 *
 * @param sourceTrack the track to create waveform image from
 * @return a job that will create a waveform image
 * @throws MediaPackageException if the serialization of the given track fails
 * @throws WaveformServiceException if the job can't be created for any reason
 */
@Override
public Job createWaveformImage(Track sourceTrack) throws MediaPackageException, WaveformServiceException {
    HttpPost post = new HttpPost("/create");
    try {
        List<BasicNameValuePair> params = new ArrayList<>();
        params.add(new BasicNameValuePair("track", MediaPackageElementParser.getAsXml(sourceTrack)));
        post.setEntity(new UrlEncodedFormEntity(params));
    } catch (Exception e) {
        throw new WaveformServiceException(e);
    }
    HttpResponse response = null;
    try {
        response = getResponse(post);
        if (response != null) {
            try {
                Job receipt = JobParser.parseJob(response.getEntity().getContent());
                logger.info("Create waveform image from {}", sourceTrack);
                return receipt;
            } catch (Exception e) {
                throw new WaveformServiceException("Unable to create waveform image from " + sourceTrack + " using a remote service", e);
            }
        }
    } finally {
        closeConnection(response);
    }
    throw new WaveformServiceException("Unable to create waveform image from " + sourceTrack + " using a remote service");
}