Example usage for javax.imageio.stream MemoryCacheImageOutputStream MemoryCacheImageOutputStream

Introduction

In this page you can find the example usage for javax.imageio.stream MemoryCacheImageOutputStream MemoryCacheImageOutputStream.

Prototype

public MemoryCacheImageOutputStream(OutputStream stream) 

Source Link

Document

Constructs a MemoryCacheImageOutputStream that will write to a given OutputStream .

Usage

From source file:org.codice.alliance.plugin.nitf.NitfPostIngestPlugin.java

private byte[] renderToJpeg2k(final BufferedImage bufferedImage) throws IOException {

    BufferedImage imageToCompress = bufferedImage;

    if (bufferedImage.getColorModel().getNumComponents() == ARGB_COMPONENT_COUNT) {

        imageToCompress = new BufferedImage(bufferedImage.getWidth(), bufferedImage.getHeight(),
                BufferedImage.TYPE_3BYTE_BGR);

        Graphics2D g = imageToCompress.createGraphics();

        g.drawImage(bufferedImage, 0, 0, null);
    }/* w w  w. ja va 2  s .  com*/

    ByteArrayOutputStream os = new ByteArrayOutputStream();

    J2KImageWriter writer = new J2KImageWriter(new J2KImageWriterSpi());
    J2KImageWriteParam writeParams = (J2KImageWriteParam) writer.getDefaultWriteParam();
    writeParams.setLossless(false);
    writeParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    writeParams.setCompressionType("JPEG2000");
    writeParams.setCompressionQuality(0.0f);

    ImageOutputStream ios = new MemoryCacheImageOutputStream(os);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(imageToCompress, null, null), writeParams);
    writer.dispose();
    ios.close();

    return os.toByteArray();
}

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From source file:org.geowebcache.layer.MetaTile.java

/**
 * Outputs one tile from the internal array of tiles to a provided stream
 * // ww  w. j  ava  2  s  .c  o m
 * @param tileIdx
 *            the index of the tile relative to the internal array
 * @param format
 *            the Java name for the format
 * @param resource
 *            the outputstream
 * @return true if no error was encountered
 * @throws IOException
 */
public boolean writeTileToStream(final int tileIdx, Resource target) throws IOException {
    if (tiles == null) {
        return false;
    }
    String format = responseFormat.getInternalName();

    if (log.isDebugEnabled()) {
        log.debug("Thread: " + Thread.currentThread().getName() + " writing: " + tileIdx);
    }

    // TODO should we recycle the writers ?
    // GR: it'd be only a 2% perf gain according to profile   
    Iterator<ImageWriter> it = javax.imageio.ImageIO.getImageWritersByFormatName(format);
    ImageWriter writer = it.next();
    ImageWriteParam param = writer.getDefaultWriteParam();

    if (this.formatModifier != null) {
        param = formatModifier.adjustImageWriteParam(param);
    }

    Rectangle tileRegion = tiles[tileIdx];
    RenderedImage tile = createTile(tileRegion.x, tileRegion.y, tileRegion.width, tileRegion.height);
    disposeLater(tile);
    OutputStream outputStream = target.getOutputStream();
    ImageOutputStream imgOut = new MemoryCacheImageOutputStream(outputStream);
    writer.setOutput(imgOut);
    IIOImage image = new IIOImage(tile, null, null);
    try {
        writer.write(null, image, param);
    } finally {
        imgOut.close();
        writer.dispose();
    }

    return true;
}

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From source file:org.mrgeo.services.ServletUtils.java

/**
 * Writes an image to a servlet response
 * @param response servlet response//from ww w. j  a v  a2  s. co m
 * @param image image bytes
 * @throws IOException
 */
public static void writeImageToResponse(HttpServletResponse response, byte[] image) throws IOException {
    try {
        ImageOutputStream imageStream = new MemoryCacheImageOutputStream(response.getOutputStream());
        imageStream.write(image, 0, image.length);
        response.setContentLength((int) imageStream.length());
        imageStream.close();
    }
    // TODO: remove these catches - This is to prevent seeing the broken pipes exception
    // over and over again in the trace...leave catch in until issue is fixed (#1122)
    catch (IIOException e) {
    } catch (IndexOutOfBoundsException e) {
    }
}

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From source file:org.olat.core.commons.services.image.spi.ImageHelperImpl.java

/**
 * Can change this to choose a better compression level as the default
 * @param image/*from   www .java2 s .co m*/
 * @param scaledImage
 * @return
 */
private static boolean writeTo(BufferedImage image, OutputStream scaledImage, Size scaledSize,
        String outputFormat) {
    try {
        if (!StringHelper.containsNonWhitespace(outputFormat)) {
            outputFormat = OUTPUT_FORMAT;
        }

        Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(outputFormat);
        if (writers.hasNext()) {
            ImageWriter writer = writers.next();
            ImageWriteParam iwp = getOptimizedImageWriteParam(writer, scaledSize);
            IIOImage iiOImage = new IIOImage(image, null, null);
            ImageOutputStream iOut = new MemoryCacheImageOutputStream(scaledImage);
            writer.setOutput(iOut);
            writer.write(null, iiOImage, iwp);
            writer.dispose();
            iOut.flush();
            iOut.close();
            return true;
        } else {
            return ImageIO.write(image, outputFormat, scaledImage);
        }
    } catch (IOException e) {
        return false;
    }
}

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