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

Introduction

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

Prototype

public void setCompressionMode(int mode) 

Source Link

Document

Specifies whether compression is to be performed, and if so how compression parameters are to be determined.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    URL url = new URL("http://www.java2s.com/style/download.png");
    BufferedImage bi = ImageIO.read(url);
    for (float q = 0.2f; q < .9f; q += .2f) {
        OutputStream outStream = new FileOutputStream(new File("c:/Java_Dev/Image-" + q + ".jpg"));
        ImageWriter imgWriter = ImageIO.getImageWritersByFormatName("jpg").next();
        ImageOutputStream ioStream = ImageIO.createImageOutputStream(outStream);
        imgWriter.setOutput(ioStream);/*from   ww w . j  a  v  a2s. c om*/

        JPEGImageWriteParam jpegParams = new JPEGImageWriteParam(Locale.getDefault());
        jpegParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        jpegParams.setCompressionQuality(q);

        imgWriter.write(null, new IIOImage(bi, null, null), jpegParams);

        ioStream.flush();
        ioStream.close();
        imgWriter.dispose();
    }
}

---

From source file:Main.java

private static void writeJpegCompressedImage(BufferedImage image, String outFile) throws IOException {
    float qualityFloat = 1f;
    ByteArrayOutputStream outStream = new ByteArrayOutputStream();

    ImageWriter imgWriter = ImageIO.getImageWritersByFormatName("jpg").next();
    ImageOutputStream ioStream = ImageIO.createImageOutputStream(outStream);
    imgWriter.setOutput(ioStream);//from  ww w  .j a  v a  2 s. c  o m

    JPEGImageWriteParam jpegParams = new JPEGImageWriteParam(Locale.getDefault());
    jpegParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    jpegParams.setCompressionQuality(qualityFloat);

    imgWriter.write(null, new IIOImage(image, null, null), jpegParams);

    ioStream.flush();
    ioStream.close();
    imgWriter.dispose();

    OutputStream outputStream = new FileOutputStream(outFile);
    outStream.writeTo(outputStream);

}

---

From source file:eu.europa.esig.dss.pades.signature.visible.ImageFactory.java

private static InputStream convertToInputStream(BufferedImage buffImage, int dpi) throws IOException {
    Iterator<ImageWriter> it = ImageIO.getImageWritersByFormatName("jpeg");
    if (!it.hasNext()) {
        throw new DSSException("No writer for JPEG found");
    }/*from  ww w .  jav  a2  s.c  om*/
    ImageWriter writer = it.next();

    JPEGImageWriteParam jpegParams = (JPEGImageWriteParam) writer.getDefaultWriteParam();
    jpegParams.setCompressionMode(JPEGImageWriteParam.MODE_EXPLICIT);
    jpegParams.setCompressionQuality(1);

    ImageTypeSpecifier typeSpecifier = ImageTypeSpecifier
            .createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
    IIOMetadata metadata = writer.getDefaultImageMetadata(typeSpecifier, jpegParams);

    initDpi(metadata, dpi);

    ByteArrayOutputStream os = new ByteArrayOutputStream();
    ImageOutputStream imageOs = ImageIO.createImageOutputStream(os);
    writer.setOutput(imageOs);
    writer.write(metadata, new IIOImage(buffImage, null, metadata), jpegParams);

    InputStream is = new ByteArrayInputStream(os.toByteArray());
    return is;
}

---

From source file:com.oneis.utils.ImageColouring.java

/**
 * Transform the colours in an image.//from w w  w .ja  v  a2 s  .  com
 *
 * @param Filename Full pathname to the source file
 * @param Method Which colouring method to use, use METHOD_* constants
 * @param Colours Array of 0xRRGGBB colours for recolouring
 * @param JPEGQuality If the image is a JPEG, the output quality for
 * reencoding
 * @param Output An OutputStream to write the file. Will be closed.
 */
static public void colourImage(String Filename, int Method, int[] Colours, int JPEGQuality, OutputStream Output)
        throws IOException {
    ColouringInfo colouringInfo = prepareForColouring(Method, Colours);

    String extension = Filename.substring(Filename.lastIndexOf('.') + 1, Filename.length());
    String outputFormat = extension;

    if (outputFormat.equals("gif")) {
        if (!colourImageGIF(Filename, colouringInfo, Output)) {
            throw new RuntimeException("Failed to directly colour GIF file");
        }
        return;
    }

    BufferedImage image = ImageIO.read(new File(Filename));
    int width = image.getWidth();
    int height = image.getHeight();

    // Rewrite the pixels
    int[] pixelBuffer = new int[width];
    for (int y = 0; y < height; ++y) {
        image.getRGB(0, y, width, 1, pixelBuffer, 0, width);
        doColouring(pixelBuffer, colouringInfo);
        image.setRGB(0, y, width, 1, pixelBuffer, 0, width);
    }

    // Writing is done the hard way to enable the JPEG quality to be set.
    // Get a writer
    Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName(outputFormat);
    if (!iter.hasNext()) {
        throw new RuntimeException("Couldn't write image of type " + outputFormat);
    }

    ImageWriter writer = iter.next();

    ImageWriteParam iwparam = null;

    // Is it JPEG? If so, might want to set the quality
    if (outputFormat.equals("jpeg") || outputFormat.equals("jpg")) {
        // Clamp value
        int q = JPEGQuality;
        if (q < 10) {
            q = 10;
        }
        if (q > 100) {
            q = 100;
        }

        JPEGImageWriteParam jparam = new JPEGImageWriteParam(null);
        jparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        jparam.setCompressionQuality((float) (((float) q) / 100.0));
        iwparam = jparam;
    }

    ImageOutputStream output = ImageIO.createImageOutputStream(Output);
    writer.setOutput(output);
    writer.write(null, new IIOImage(image, null, null), iwparam);

    output.close();
}

---

From source file:org.n52.server.io.DiagramGenerator.java

/**
 * Creates a time series chart diagram and writes it to the OutputStream.
 */// w w  w  . j a v  a2s .  co m
public void producePresentation(Map<String, OXFFeatureCollection> entireCollMap, DesignOptions options,
        FileOutputStream out, boolean compress) throws OXFException, IOException {

    // render features:
    int width = options.getWidth();
    int height = options.getHeight();
    Calendar begin = Calendar.getInstance();
    begin.setTimeInMillis(options.getBegin());
    Calendar end = Calendar.getInstance();
    end.setTimeInMillis(options.getEnd());

    DiagramRenderer renderer = new DiagramRenderer(false);

    JFreeChart diagramChart = renderer.renderChart(entireCollMap, options, begin, end, compress);
    diagramChart.removeLegend();

    // draw chart into image:
    BufferedImage diagramImage = new BufferedImage(width, height, TYPE_INT_RGB);
    Graphics2D chartGraphics = diagramImage.createGraphics();
    chartGraphics.setColor(Color.white);
    chartGraphics.fillRect(0, 0, width, height);

    diagramChart.draw(chartGraphics, new Rectangle2D.Float(0, 0, width, height));

    JPEGImageWriteParam p = new JPEGImageWriteParam(null);
    p.setCompressionMode(JPEGImageWriteParam.MODE_DEFAULT);
    write(diagramImage, FORMAT, out);
}

---

From source file:org.n52.server.io.DiagramGenerator.java

public void createLegend(DesignOptions options, OutputStream out) throws OXFException, IOException {

    int topMargin = 10;
    int leftMargin = 30;
    int iconWidth = 15;
    int iconHeight = 15;
    int verticalSpaceBetweenEntries = 20;
    int horizontalSpaceBetweenIconAndText = 15;

    DesignDescriptionList ddList = buildUpDesignDescriptionList(options);
    int width = 800;
    int height = topMargin + (ddList.size() * (iconHeight + verticalSpaceBetweenEntries));

    BufferedImage legendImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    Graphics2D legendGraphics = legendImage.createGraphics();
    legendGraphics.setColor(Color.white);
    legendGraphics.fillRect(0, 0, width, height);

    int offset = 0;
    for (RenderingDesign dd : ddList.getAllDesigns()) {
        int yPos = topMargin + offset * iconHeight + offset * verticalSpaceBetweenEntries;

        // icon:/*w w w  .  ja v  a 2s  .c  om*/
        legendGraphics.setColor(dd.getColor());
        legendGraphics.fillRect(leftMargin, yPos, iconWidth, iconHeight);

        // text:
        legendGraphics.setColor(Color.black);

        legendGraphics.drawString(dd.getFeature().getLabel() + " - " + dd.getLabel(),
                leftMargin + iconWidth + horizontalSpaceBetweenIconAndText, yPos + iconHeight);

        offset++;
    }

    JPEGImageWriteParam p = new JPEGImageWriteParam(null);
    p.setCompressionMode(JPEGImageWriteParam.MODE_DEFAULT);
    write(legendImage, FORMAT, out);
}

---

From source file:org.n52.io.img.ChartRenderer.java

public void encodeAndWriteTo(OutputStream stream) throws IoParseException {
    try {/*w ww  .j av a2 s.c  om*/
        JPEGImageWriteParam p = new JPEGImageWriteParam(null);
        p.setCompressionMode(JPEGImageWriteParam.MODE_DEFAULT);
        write(drawChartToImage(), mimeType.getFormatName(), stream);
    } catch (IOException e) {
        throw new IoParseException("Could not write image to output stream.", e);
    } finally {
        try {
            stream.flush();
            stream.close();
        } catch (IOException e) {
            LOGGER.debug("Stream already flushed and closed.", e);
        }
    }
}

---

From source file:org.sejda.sambox.pdmodel.graphics.image.JPEGFactory.java

private static void encodeImageToJPEGStream(BufferedImage image, float quality, int dpi, OutputStream out)
        throws IOException {
    // encode to JPEG
    ImageOutputStream ios = null;
    ImageWriter imageWriter = null;
    try {/* ww  w. j  a va2s. c  o  m*/
        // find JAI writer
        imageWriter = ImageIO.getImageWritersBySuffix("jpeg").next();
        ios = ImageIO.createImageOutputStream(out);
        imageWriter.setOutput(ios);

        // add compression
        JPEGImageWriteParam jpegParam = (JPEGImageWriteParam) imageWriter.getDefaultWriteParam();
        jpegParam.setCompressionMode(JPEGImageWriteParam.MODE_EXPLICIT);
        jpegParam.setCompressionQuality(quality);

        // add metadata
        ImageTypeSpecifier imageTypeSpecifier = new ImageTypeSpecifier(image);
        IIOMetadata data = imageWriter.getDefaultImageMetadata(imageTypeSpecifier, jpegParam);
        Element tree = (Element) data.getAsTree("javax_imageio_jpeg_image_1.0");
        Element jfif = (Element) tree.getElementsByTagName("app0JFIF").item(0);
        jfif.setAttribute("Xdensity", Integer.toString(dpi));
        jfif.setAttribute("Ydensity", Integer.toString(dpi));
        jfif.setAttribute("resUnits", "1"); // 1 = dots/inch

        // write
        imageWriter.write(data, new IIOImage(image, null, null), jpegParam);
    } finally {
        // clean up
        IOUtils.closeQuietly(out);
        if (ios != null) {
            ios.close();
        }
        if (imageWriter != null) {
            imageWriter.dispose();
        }
    }
}

---

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./* ww  w . j  av  a2s.  com*/
 * <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;
}

---