Examples with LaidOutElement org.opencastproject.composer.api.LaidOutElement used on opensource projects

Example 6 with LaidOutElement

use of org.opencastproject.composer.api.LaidOutElement in project opencast by opencast.

the class CompositeWorkflowOperationHandler method handleSingleTrack.

private WorkflowOperationResult handleSingleTrack(MediaPackage mediaPackage, WorkflowOperationInstance operation, CompositeSettings compositeSettings, Option<Attachment> watermarkAttachment) throws EncoderException, IOException, NotFoundException, MediaPackageException, WorkflowOperationException {
    if (compositeSettings.getSingleSourceLayout() == null) {
        throw new WorkflowOperationException("Single video layout must be set! Please verify that you have a " + LAYOUT_SINGLE + " property in your composite operation in your workflow definition.");
    }
    try {
        VideoStream[] videoStreams = TrackSupport.byType(compositeSettings.getSingleTrack().getStreams(), VideoStream.class);
        if (videoStreams.length == 0) {
            logger.warn("No video stream available to compose! {}", compositeSettings.getSingleTrack());
            return createResult(mediaPackage, Action.SKIP);
        }
        // Read the video dimensions from the mediapackage stream information
        Dimension videoDimension = Dimension.dimension(videoStreams[0].getFrameWidth(), videoStreams[0].getFrameHeight());
        // Create the video layout definitions
        List<Tuple<Dimension, HorizontalCoverageLayoutSpec>> shapes = new ArrayList<Tuple<Dimension, HorizontalCoverageLayoutSpec>>();
        shapes.add(0, Tuple.tuple(videoDimension, compositeSettings.getSingleSourceLayout()));
        // Determine dimension of output
        Dimension outputDimension = null;
        String outputResolutionSource = compositeSettings.getOutputResolutionSource();
        if (outputResolutionSource.equals(CompositeSettings.OUTPUT_RESOLUTION_FIXED)) {
            outputDimension = compositeSettings.getOutputDimension();
        } else if (outputResolutionSource.equals(CompositeSettings.OUTPUT_RESOLUTION_LOWER)) {
            outputDimension = videoDimension;
        } else if (outputResolutionSource.equals(CompositeSettings.OUTPUT_RESOLUTION_UPPER)) {
            outputDimension = videoDimension;
        }
        // Calculate the single layout
        MultiShapeLayout multiShapeLayout = LayoutManager.multiShapeLayout(outputDimension, shapes);
        // Create the laid out element for the videos
        LaidOutElement<Track> lowerLaidOutElement = new LaidOutElement<Track>(compositeSettings.getSingleTrack(), multiShapeLayout.getShapes().get(0));
        // Create the optionally laid out element for the watermark
        Option<LaidOutElement<Attachment>> watermarkOption = createWatermarkLaidOutElement(compositeSettings, outputDimension, watermarkAttachment);
        Job compositeJob = composerService.composite(outputDimension, Option.<LaidOutElement<Track>>none(), lowerLaidOutElement, watermarkOption, compositeSettings.getProfile().getIdentifier(), compositeSettings.getOutputBackground());
        // Wait for the jobs to return
        if (!waitForStatus(compositeJob).isSuccess())
            throw new WorkflowOperationException("The composite job did not complete successfully");
        if (compositeJob.getPayload().length() > 0) {
            Track compoundTrack = (Track) MediaPackageElementParser.getFromXml(compositeJob.getPayload());
            compoundTrack.setURI(workspace.moveTo(compoundTrack.getURI(), mediaPackage.getIdentifier().toString(), compoundTrack.getIdentifier(), "composite." + FilenameUtils.getExtension(compoundTrack.getURI().toString())));
            // Adjust the target tags
            for (String tag : compositeSettings.getTargetTags()) {
                logger.trace("Tagging compound track with '{}'", tag);
                compoundTrack.addTag(tag);
            }
            // Adjust the target flavor.
            compoundTrack.setFlavor(compositeSettings.getTargetFlavor());
            logger.debug("Compound track has flavor '{}'", compoundTrack.getFlavor());
            // store new tracks to mediaPackage
            mediaPackage.add(compoundTrack);
            WorkflowOperationResult result = createResult(mediaPackage, Action.CONTINUE, compositeJob.getQueueTime());
            logger.debug("Composite operation completed");
            return result;
        } else {
            logger.info("Composite operation unsuccessful, no payload returned: {}", compositeJob);
            return createResult(mediaPackage, Action.SKIP);
        }
    } finally {
        if (compositeSettings.getSourceUrlWatermark() != null)
            workspace.deleteFromCollection(COLLECTION, compositeSettings.getWatermarkIdentifier() + "." + FilenameUtils.getExtension(compositeSettings.getSourceUrlWatermark()));
    }
}