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

Example 1 with Audio

use of org.opencastproject.metadata.mpeg7.Audio 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 Audio

use of org.opencastproject.metadata.mpeg7.Audio 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 Audio

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

the class Mpeg7CaptionConverter method exportCaption.

@Override
public void exportCaption(OutputStream outputStream, List<Caption> captions, String language) throws IOException {
    Mpeg7Catalog mpeg7 = Mpeg7CatalogImpl.newInstance();
    MediaTime mediaTime = new MediaTimeImpl(0, 0);
    Audio audioContent = mpeg7.addAudioContent("captions", mediaTime, null);
    @SuppressWarnings("unchecked") TemporalDecomposition<AudioSegment> captionDecomposition = (TemporalDecomposition<AudioSegment>) audioContent.getTemporalDecomposition();
    int segmentCount = 0;
    for (Caption caption : captions) {
        // Get all the words/parts for the transcript
        String[] words = caption.getCaption();
        if (words.length == 0)
            continue;
        // Create a new segment
        AudioSegment segment = captionDecomposition.createSegment("segment-" + segmentCount++);
        Time captionST = caption.getStartTime();
        Time captionET = caption.getStopTime();
        // Calculate start time
        Calendar startTime = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        startTime.setTimeInMillis(0);
        startTime.add(Calendar.HOUR_OF_DAY, captionST.getHours());
        startTime.add(Calendar.MINUTE, captionST.getMinutes());
        startTime.add(Calendar.SECOND, captionST.getSeconds());
        startTime.add(Calendar.MILLISECOND, captionST.getMilliseconds());
        // Calculate end time
        Calendar endTime = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
        endTime.setTimeInMillis(0);
        endTime.add(Calendar.HOUR_OF_DAY, captionET.getHours());
        endTime.add(Calendar.MINUTE, captionET.getMinutes());
        endTime.add(Calendar.SECOND, captionET.getSeconds());
        endTime.add(Calendar.MILLISECOND, captionET.getMilliseconds());
        long startTimeInMillis = startTime.getTimeInMillis();
        long endTimeInMillis = endTime.getTimeInMillis();
        long duration = endTimeInMillis - startTimeInMillis;
        segment.setMediaTime(new MediaTimeImpl(startTimeInMillis, duration));
        TextAnnotation textAnnotation = segment.createTextAnnotation(0, 0, language);
        // Collect all the words in the segment
        StringBuffer captionLine = new StringBuffer();
        // Add each words/parts as segment to the catalog
        for (String word : words) {
            if (captionLine.length() > 0)
                captionLine.append(' ');
            captionLine.append(word);
        }
        // Append the text to the annotation
        textAnnotation.addFreeTextAnnotation(new FreeTextAnnotationImpl(captionLine.toString()));
    }
    Transformer tf = null;
    try {
        tf = TransformerFactory.newInstance().newTransformer();
        DOMSource xmlSource = new DOMSource(mpeg7.toXml());
        tf.transform(xmlSource, new StreamResult(outputStream));
    } catch (TransformerConfigurationException e) {
        logger.warn("Error serializing mpeg7 captions catalog: {}", e.getMessage());
        throw new IOException(e);
    } catch (TransformerFactoryConfigurationError e) {
        logger.warn("Error serializing mpeg7 captions catalog: {}", e.getMessage());
        throw new IOException(e);
    } catch (TransformerException e) {
        logger.warn("Error serializing mpeg7 captions catalog: {}", e.getMessage());
        throw new IOException(e);
    } catch (ParserConfigurationException e) {
        logger.warn("Error serializing mpeg7 captions catalog: {}", e.getMessage());
        throw new IOException(e);
    }
}