Examples with JPEGRegistryEntry org.apache.batik.ext.awt.image.codec.jpeg.JPEGRegistryEntry used on opensource projects

Example 1 with JPEGRegistryEntry

use of org.apache.batik.ext.awt.image.codec.jpeg.JPEGRegistryEntry in project opencast by opencast.

the class CoverImageServiceOsgiImpl method activate.

/**
 * OSGi activation callback
 *
 * @param cc
 *          the OSGi component context
 */
@Override
public void activate(ComponentContext cc) {
    super.activate(cc);
    // See
    // http://www.stichlberger.com/software/workaround-for-batiks-noclassdeffounderrorclassnotfoundexception-truncatedfileexception/
    // ---------------
    // add this code before you use batik (make sure is runs only once)
    // via the lower priority this subclass is registered before JPEGRegistryEntry
    // and prevents JPEGRegistryEntry.handleStream from breaking when used on a non Sun/Oracle JDK
    JPEGRegistryEntry entry = new JPEGRegistryEntry() {

        @Override
        public float getPriority() {
            // higher than that of JPEGRegistryEntry (which is 1000)
            return 500;
        }

        /**
         * Decode the Stream into a RenderableImage
         *
         * @param inIS
         *          The input stream that contains the image.
         * @param origURL
         *          The original URL, if any, for documentation purposes only. This may be null.
         * @param needRawData
         *          If true the image returned should not have any default color correction the file may specify applied.
         */
        @Override
        public Filter handleStream(InputStream inIS, ParsedURL origURL, boolean needRawData) {
            // Code from org.apache.batik.ext.awt.image.codec.jpeg.JPEGRegistryEntry#handleStream
            // Reading image with ImageIO to prevent NoClassDefFoundError on OpenJDK
            final DeferRable dr = new DeferRable();
            final InputStream is = inIS;
            final String errCode;
            final Object[] errParam;
            if (origURL != null) {
                errCode = ERR_URL_FORMAT_UNREADABLE;
                errParam = new Object[] { "JPEG", origURL };
            } else {
                errCode = ERR_STREAM_FORMAT_UNREADABLE;
                errParam = new Object[] { "JPEG" };
            }
            Thread t = new Thread() {

                @Override
                public void run() {
                    Filter filt;
                    try {
                        BufferedImage image;
                        image = ImageIO.read(is);
                        dr.setBounds(new Rectangle2D.Double(0, 0, image.getWidth(), image.getHeight()));
                        CachableRed cr;
                        cr = GraphicsUtil.wrap(image);
                        cr = new Any2sRGBRed(cr);
                        cr = new FormatRed(cr, GraphicsUtil.sRGB_Unpre);
                        WritableRaster wr = (WritableRaster) cr.getData();
                        ColorModel cm = cr.getColorModel();
                        image = new BufferedImage(cm, wr, cm.isAlphaPremultiplied(), null);
                        cr = GraphicsUtil.wrap(image);
                        filt = new RedRable(cr);
                    } catch (IOException ioe) {
                        // Something bad happened here...
                        filt = ImageTagRegistry.getBrokenLinkImage(this, errCode, errParam);
                    } catch (ThreadDeath td) {
                        filt = ImageTagRegistry.getBrokenLinkImage(this, errCode, errParam);
                        dr.setSource(filt);
                        throw td;
                    } catch (Throwable t) {
                        filt = ImageTagRegistry.getBrokenLinkImage(this, errCode, errParam);
                    }
                    dr.setSource(filt);
                }
            };
            t.start();
            return dr;
        }
    };
    ImageTagRegistry.getRegistry().register(entry);
    logger.info("Cover image service activated");
}