Example usage for javax.imageio ImageIO getImageWritersBySuffix

Introduction

In this page you can find the example usage for javax.imageio ImageIO getImageWritersBySuffix.

Prototype

public static Iterator<ImageWriter> getImageWritersBySuffix(String fileSuffix) 

Source Link

Document

Returns an Iterator containing all currently registered ImageWriter s that claim to be able to encode files with the given suffix.

Usage

From source file:org.asqatasun.rules.test.AbstractRuleImplementationTestCase.java

private String getImageExtension(String imageUrl) {
    String ext = imageUrl.substring(imageUrl.lastIndexOf('.') + 1);
    java.util.Iterator<ImageWriter> it = ImageIO.getImageWritersBySuffix(ext);
    if (it.next() != null) {
        return ext;
    } else {//from  w  w  w  .ja va2  s .c  o m
        return "jpg";
    }
}

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From source file:org.freecine.filmscan.Project.java

private void saveImage(RenderedImage img, File file) {
    // Find a writer for that file extensions
    // Try to determine the file type based on extension
    String ftype = "jpg";
    String imageFname = file.getName();
    int extIndex = imageFname.lastIndexOf(".") + 1;
    if (extIndex > 0) {
        ftype = imageFname.substring(extIndex);
    }/*from   w w w.  j av a2 s .c  om*/

    ImageWriter writer = null;
    Iterator iter = ImageIO.getImageWritersBySuffix(ftype);
    writer = (ImageWriter) iter.next();

    if (writer != null) {
        ImageOutputStream ios = null;
        try {
            // Prepare output file
            ios = ImageIO.createImageOutputStream(file);
            writer.setOutput(ios);
            // Set some parameters
            ImageWriteParam param = writer.getDefaultWriteParam();
            writer.write(null, new IIOImage(img, null, null), param);

            // Cleanup
            ios.flush();

        } catch (IOException ex) {
            log.severe("Error saving image " + file.getAbsolutePath() + ": " + ex.getMessage());
        } finally {
            if (ios != null) {
                try {
                    ios.close();
                } catch (IOException e) {
                    log.severe("Error closing output stream: " + e.getMessage());
                }
            }
            writer.dispose();
        }
    }
}

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From source file:org.onehippo.forge.gallerymagick.core.command.ScalrProcessorUtils.java

/**
 * Creates and returns an {@link ImageWriter} instance from the {@code targetFile}.
 * @param targetFile target file/*from w w w  .  j  av  a 2s . c o  m*/
 * @return an {@link ImageWriter} instance
 * @throws IOException if IOException occurs
 */
private static ImageWriter getImageWriter(File targetFile) throws IOException {
    ImageWriter writer = null;
    String extension = FilenameUtils.getExtension(targetFile.getName());
    Iterator<ImageWriter> it = ImageIO.getImageWritersBySuffix(extension);

    if (it.hasNext()) {
        writer = it.next();
        ImageOutputStream output = new FileImageOutputStream(targetFile);
        writer.setOutput(output);
    }

    return writer;
}

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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 {/*from   w  ww .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();
        }
    }
}

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