Examples with TemporalDecomposition org.opencastproject.metadata.mpeg7.TemporalDecomposition used on opensource projects

Example 1 with TemporalDecomposition

use of org.opencastproject.metadata.mpeg7.TemporalDecomposition in project opencast by opencast.

the class Mpeg7CaptionConverter method importCaption.

/**
 * @see org.opencastproject.caption.api.CaptionConverter#importCaption(java.io.InputStream, java.lang.String)
 */
@SuppressWarnings("unchecked")
@Override
public List<Caption> importCaption(InputStream inputStream, String language) throws CaptionConverterException {
    List<Caption> captions = new ArrayList<Caption>();
    Mpeg7Catalog catalog = new Mpeg7CatalogImpl(inputStream);
    Iterator<Audio> audioContentIterator = catalog.audioContent();
    if (audioContentIterator == null)
        return captions;
    content: while (audioContentIterator.hasNext()) {
        Audio audioContent = audioContentIterator.next();
        TemporalDecomposition<AudioSegment> audioSegments = (TemporalDecomposition<AudioSegment>) audioContent.getTemporalDecomposition();
        Iterator<AudioSegment> audioSegmentIterator = audioSegments.segments();
        if (audioSegmentIterator == null)
            continue content;
        while (audioSegmentIterator.hasNext()) {
            AudioSegment segment = audioSegmentIterator.next();
            Iterator<TextAnnotation> annotationIterator = segment.textAnnotations();
            if (annotationIterator == null)
                continue content;
            while (annotationIterator.hasNext()) {
                TextAnnotation annotation = annotationIterator.next();
                if (!annotation.getLanguage().equals(language)) {
                    logger.debug("Skipping audio content '{}' because of language mismatch", audioContent.getId());
                    continue content;
                }
                List<String> captionLines = new ArrayList<String>();
                Iterator<FreeTextAnnotation> freeTextAnnotationIterator = annotation.freeTextAnnotations();
                if (freeTextAnnotationIterator == null)
                    continue;
                while (freeTextAnnotationIterator.hasNext()) {
                    FreeTextAnnotation freeTextAnnotation = freeTextAnnotationIterator.next();
                    captionLines.add(freeTextAnnotation.getText());
                }
                MediaTime segmentTime = segment.getMediaTime();
                MediaTimePoint stp = segmentTime.getMediaTimePoint();
                MediaDuration d = segmentTime.getMediaDuration();
                Calendar startCalendar = Calendar.getInstance();
                int millisAtStart = (int) (stp.getTimeInMilliseconds() - (((stp.getHour() * 60 + stp.getMinutes()) * 60 + stp.getSeconds()) * 1000));
                int millisAtEnd = (int) (d.getDurationInMilliseconds() - (((d.getHours() * 60 + d.getMinutes()) * 60 + d.getSeconds()) * 1000));
                startCalendar.set(Calendar.HOUR, stp.getHour());
                startCalendar.set(Calendar.MINUTE, stp.getMinutes());
                startCalendar.set(Calendar.SECOND, stp.getSeconds());
                startCalendar.set(Calendar.MILLISECOND, millisAtStart);
                startCalendar.add(Calendar.HOUR, d.getHours());
                startCalendar.add(Calendar.MINUTE, d.getMinutes());
                startCalendar.add(Calendar.SECOND, d.getSeconds());
                startCalendar.set(Calendar.MILLISECOND, millisAtEnd);
                try {
                    Time startTime = new TimeImpl(stp.getHour(), stp.getMinutes(), stp.getSeconds(), millisAtStart);
                    Time endTime = new TimeImpl(startCalendar.get(Calendar.HOUR), startCalendar.get(Calendar.MINUTE), startCalendar.get(Calendar.SECOND), startCalendar.get(Calendar.MILLISECOND));
                    Caption caption = new CaptionImpl(startTime, endTime, captionLines.toArray(new String[captionLines.size()]));
                    captions.add(caption);
                } catch (IllegalTimeFormatException e) {
                    logger.warn("Error setting caption time: {}", e.getMessage());
                }
            }
        }
    }
    return captions;
}

Example 2 with TemporalDecomposition

use of org.opencastproject.metadata.mpeg7.TemporalDecomposition in project opencast by opencast.

the class Mpeg7CaptionConverter method getLanguageList.

/**
 * @see org.opencastproject.caption.api.CaptionConverter#getLanguageList(java.io.InputStream)
 */
@SuppressWarnings("unchecked")
@Override
public String[] getLanguageList(InputStream inputStream) throws CaptionConverterException {
    Set<String> languages = new HashSet<String>();
    Mpeg7Catalog catalog = new Mpeg7CatalogImpl(inputStream);
    Iterator<Audio> audioContentIterator = catalog.audioContent();
    if (audioContentIterator == null)
        return languages.toArray(new String[languages.size()]);
    content: while (audioContentIterator.hasNext()) {
        Audio audioContent = audioContentIterator.next();
        TemporalDecomposition<AudioSegment> audioSegments = (TemporalDecomposition<AudioSegment>) audioContent.getTemporalDecomposition();
        Iterator<AudioSegment> audioSegmentIterator = audioSegments.segments();
        if (audioSegmentIterator == null)
            continue content;
        while (audioSegmentIterator.hasNext()) {
            AudioSegment segment = audioSegmentIterator.next();
            Iterator<TextAnnotation> annotationIterator = segment.textAnnotations();
            if (annotationIterator == null)
                continue content;
            while (annotationIterator.hasNext()) {
                TextAnnotation annotation = annotationIterator.next();
                String language = annotation.getLanguage();
                if (language != null)
                    languages.add(language);
            }
        }
    }
    return languages.toArray(new String[languages.size()]);
}

Example 3 with TemporalDecomposition

use of org.opencastproject.metadata.mpeg7.TemporalDecomposition in project opencast by opencast.

the class SegmentPreviewsWorkflowOperationHandler method createPreviews.

/**
 * Encode tracks from MediaPackage using profiles stored in properties and updates current MediaPackage.
 *
 * @param mediaPackage
 * @param properties
 * @return the operation result containing the updated mediapackage
 * @throws EncoderException
 * @throws ExecutionException
 * @throws InterruptedException
 * @throws IOException
 * @throws NotFoundException
 * @throws WorkflowOperationException
 */
private WorkflowOperationResult createPreviews(final MediaPackage mediaPackage, WorkflowOperationInstance operation) throws EncoderException, InterruptedException, ExecutionException, NotFoundException, MediaPackageException, IOException, WorkflowOperationException {
    long totalTimeInQueue = 0;
    // Read the configuration properties
    String sourceVideoFlavor = StringUtils.trimToNull(operation.getConfiguration("source-flavor"));
    String sourceTags = StringUtils.trimToNull(operation.getConfiguration("source-tags"));
    String targetImageTags = StringUtils.trimToNull(operation.getConfiguration("target-tags"));
    String targetImageFlavor = StringUtils.trimToNull(operation.getConfiguration("target-flavor"));
    String encodingProfileName = StringUtils.trimToNull(operation.getConfiguration("encoding-profile"));
    String referenceFlavor = StringUtils.trimToNull(operation.getConfiguration("reference-flavor"));
    String referenceTags = StringUtils.trimToNull(operation.getConfiguration("reference-tags"));
    // Find the encoding profile
    EncodingProfile profile = composerService.getProfile(encodingProfileName);
    if (profile == null)
        throw new IllegalStateException("Encoding profile '" + encodingProfileName + "' was not found");
    List<String> sourceTagSet = asList(sourceTags);
    // Select the tracks based on the tags and flavors
    Set<Track> videoTrackSet = new HashSet<>();
    for (Track track : mediaPackage.getTracksByTags(sourceTagSet)) {
        if (sourceVideoFlavor == null || (track.getFlavor() != null && sourceVideoFlavor.equals(track.getFlavor().toString()))) {
            if (!track.hasVideo())
                continue;
            videoTrackSet.add(track);
        }
    }
    if (videoTrackSet.size() == 0) {
        logger.debug("Mediapackage {} has no suitable tracks to extract images based on tags {} and flavor {}", mediaPackage, sourceTags, sourceVideoFlavor);
        return createResult(mediaPackage, Action.CONTINUE);
    } else {
        // Determine the tagset for the reference
        List<String> referenceTagSet = asList(referenceTags);
        // Determine the reference master
        for (Track t : videoTrackSet) {
            // Try to load the segments catalog
            MediaPackageReference trackReference = new MediaPackageReferenceImpl(t);
            Catalog[] segmentCatalogs = mediaPackage.getCatalogs(MediaPackageElements.SEGMENTS, trackReference);
            Mpeg7Catalog mpeg7 = null;
            if (segmentCatalogs.length > 0) {
                mpeg7 = loadMpeg7Catalog(segmentCatalogs[0]);
                if (segmentCatalogs.length > 1)
                    logger.warn("More than one segments catalog found for track {}. Resuming with the first one ({})", t, mpeg7);
            } else {
                logger.debug("No segments catalog found for track {}", t);
                continue;
            }
            // Check the catalog's consistency
            if (mpeg7.videoContent() == null || mpeg7.videoContent().next() == null) {
                logger.info("Segments catalog {} contains no video content", mpeg7);
                continue;
            }
            Video videoContent = mpeg7.videoContent().next();
            TemporalDecomposition<? extends Segment> decomposition = videoContent.getTemporalDecomposition();
            // Are there any segments?
            if (decomposition == null || !decomposition.hasSegments()) {
                logger.info("Segments catalog {} contains no video content", mpeg7);
                continue;
            }
            // Is a derived track with the configured reference flavor available?
            MediaPackageElement referenceMaster = getReferenceMaster(mediaPackage, t, referenceFlavor, referenceTagSet);
            // Create the preview images according to the mpeg7 segments
            if (t.hasVideo() && mpeg7 != null) {
                Iterator<? extends Segment> segmentIterator = decomposition.segments();
                List<MediaTimePoint> timePointList = new LinkedList<>();
                while (segmentIterator.hasNext()) {
                    Segment segment = segmentIterator.next();
                    MediaTimePoint tp = segment.getMediaTime().getMediaTimePoint();
                    timePointList.add(tp);
                }
                // convert to time array
                double[] timeArray = new double[timePointList.size()];
                for (int i = 0; i < timePointList.size(); i++) timeArray[i] = (double) timePointList.get(i).getTimeInMilliseconds() / 1000;
                Job job = composerService.image(t, profile.getIdentifier(), timeArray);
                if (!waitForStatus(job).isSuccess()) {
                    throw new WorkflowOperationException("Extracting preview image from " + t + " failed");
                }
                // Get the latest copy
                try {
                    job = serviceRegistry.getJob(job.getId());
                } catch (ServiceRegistryException e) {
                    throw new WorkflowOperationException(e);
                }
                // add this receipt's queue time to the total
                totalTimeInQueue += job.getQueueTime();
                List<? extends MediaPackageElement> composedImages = MediaPackageElementParser.getArrayFromXml(job.getPayload());
                Iterator<MediaTimePoint> it = timePointList.iterator();
                for (MediaPackageElement element : composedImages) {
                    Attachment composedImage = (Attachment) element;
                    if (composedImage == null)
                        throw new IllegalStateException("Unable to compose image");
                    // Add the flavor, either from the operation configuration or from the composer
                    if (targetImageFlavor != null) {
                        composedImage.setFlavor(MediaPackageElementFlavor.parseFlavor(targetImageFlavor));
                        logger.debug("Preview image has flavor '{}'", composedImage.getFlavor());
                    }
                    // Set the mimetype
                    if (profile.getMimeType() != null)
                        composedImage.setMimeType(MimeTypes.parseMimeType(profile.getMimeType()));
                    // Add tags
                    for (String tag : asList(targetImageTags)) {
                        logger.trace("Tagging image with '{}'", tag);
                        composedImage.addTag(tag);
                    }
                    // Refer to the original track including a timestamp
                    MediaPackageReferenceImpl ref = new MediaPackageReferenceImpl(referenceMaster);
                    ref.setProperty("time", it.next().toString());
                    composedImage.setReference(ref);
                    // store new image in the mediaPackage
                    mediaPackage.add(composedImage);
                    String fileName = getFileNameFromElements(t, composedImage);
                    composedImage.setURI(workspace.moveTo(composedImage.getURI(), mediaPackage.getIdentifier().toString(), composedImage.getIdentifier(), fileName));
                }
            }
        }
    }
    return createResult(mediaPackage, Action.CONTINUE, totalTimeInQueue);
}

Example 4 with TemporalDecomposition

use of org.opencastproject.metadata.mpeg7.TemporalDecomposition 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 5 with TemporalDecomposition

use of org.opencastproject.metadata.mpeg7.TemporalDecomposition 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());
}