Example usage for javax.imageio.plugins.jpeg JPEGImageWriteParam JPEGImageWriteParam

Introduction

In this page you can find the example usage for javax.imageio.plugins.jpeg JPEGImageWriteParam JPEGImageWriteParam.

Prototype

public JPEGImageWriteParam(Locale locale) 

Source Link

Document

Constructs a JPEGImageWriteParam .

Usage

From source file:org.modelibra.util.ImageHandler.java

/**
 * Saves an image to a jpeg file./*from w ww  . j a  v  a 2  s .c  o  m*/
 * 
 * @param bi
 *            buffered image
 * @param file
 *            jpeg file
 * @param quality
 *            image quality
 */
public static void saveImageToJPEGFile14(BufferedImage bi, File file, float quality) throws IOException {

    JPEGImageWriteParam param = new JPEGImageWriteParam(null);
    ImageTypeSpecifier type = new ImageTypeSpecifier(bi);
    param.setDestinationType(type);
    ImageOutputStream imgos = ImageIO.createImageOutputStream(file);
    Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = writers.next();
    writer.setOutput(imgos);
    writer.write(bi);
    imgos.close();
}

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From source file:org.mycore.iview2.frontend.MCRTileCombineServlet.java

/**
 * Initializes this instance.//from   www  . j  a va  2 s .com
 * 
 * Use parameter <code>org.mycore.iview2.frontend.MCRFooterInterface</code> to specify implementation of {@link MCRFooterInterface} (can be omitted).
 */
@Override
public void init() throws ServletException {
    super.init();
    imageWriteParam = new JPEGImageWriteParam(Locale.getDefault());
    try {
        imageWriteParam.setProgressiveMode(ImageWriteParam.MODE_DEFAULT);
    } catch (UnsupportedOperationException e) {
        LOGGER.warn("Your JPEG encoder does not support progressive JPEGs.");
    }
    imageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    imageWriteParam.setCompressionQuality(QUALITY);
    String footerClassName = getInitParameter(MCRFooterInterface.class.getName());
    if (footerClassName != null) {
        try {
            footerImpl = (MCRFooterInterface) Class.forName(footerClassName).newInstance();
        } catch (Exception e) {
            throw new ServletException("Could not initialize MCRFooterInterface", e);
        }
    }
}

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From source file:tvbrowserdataservice.file.ProgramField.java

/**
 * This Function loads an image using imageio,
 * resizes it to the Max-Size of Images in TVBrowser and
 * stores it as an compressed jpg./*from   ww  w .j av  a  2s  .c o  m*/
 * <p/>
 * If the Image is smaller than the Max-Size, it isn't altered
 *
 * @param data Image-Data
 * @return resized Image-Data
 */
private static byte[] recreateImage(byte[] data) {
    byte[] newdata = null;
    BufferedImage image = null;
    try {
        // Read Image
        image = ImageIO.read(new ByteArrayInputStream(data));

        int curx = image.getWidth(null);
        int cury = image.getHeight(null);

        // If the Size is < than max, use the original Data to reduce compression
        // artefacts
        if ((curx <= MAX_IMAGE_SIZE_X) && (cury <= MAX_IMAGE_SIZE_Y)) {
            return data;
        }

        int newx = MAX_IMAGE_SIZE_X;
        int newy = (int) ((MAX_IMAGE_SIZE_X / (float) curx) * cury);

        if (newy > MAX_IMAGE_SIZE_Y) {
            newy = MAX_IMAGE_SIZE_Y;
            newx = (int) ((MAX_IMAGE_SIZE_Y / (float) cury) * curx);
        }

        BufferedImage tempPic = new BufferedImage(image.getWidth(null), image.getHeight(null),
                BufferedImage.TYPE_INT_RGB);
        Graphics2D g2d = tempPic.createGraphics();
        g2d.drawImage(image, null, null);
        g2d.dispose();

        BufferedImage newImage = UiUtilities.scaleIconToBufferedImage(tempPic, newx, newy);

        ByteArrayOutputStream out = new ByteArrayOutputStream();

        // Find a jpeg writer
        ImageWriter writer = null;
        Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("jpg");
        if (iter.hasNext()) {
            writer = iter.next();
        }

        if (writer != null) {
            // Prepare output file
            ImageOutputStream ios = ImageIO.createImageOutputStream(out);
            writer.setOutput(ios);

            JPEGImageWriteParam param = new JPEGImageWriteParam(null);

            param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            param.setCompressionQuality(0.85f);

            // Write the image
            writer.write(null, new IIOImage(newImage, null, null), param);

            // Cleanup
            ios.flush();
            writer.dispose();
            ios.close();

            newdata = out.toByteArray();
        } else {
            mLog.severe("No JPEG-Exporter found. Image is not stored in Data");
        }

    } catch (IOException e) {
        e.printStackTrace();
        newdata = null;
    }

    return newdata;
}

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