Example usage for javax.imageio ImageIO createImageInputStream

Introduction

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

Prototype

public static ImageInputStream createImageInputStream(Object input) throws IOException 

Source Link

Document

Returns an ImageInputStream that will take its input from the given Object .

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ImageInputStream imageStream = ImageIO.createImageInputStream(new URL("").openStream());
    Iterator<ImageReader> readers = ImageIO.getImageReaders(imageStream);
    ImageReader reader = null;// ww  w .  j  a  v  a 2 s. c o m
    if (!readers.hasNext()) {
        imageStream.close();
        return;
    } else {
        reader = readers.next();
    }
    String formatName = reader.getFormatName();
    if (!formatName.equalsIgnoreCase("jpeg") && !formatName.equalsIgnoreCase("png")
            && !formatName.equalsIgnoreCase("gif")) {
        imageStream.close();
        return;
    }
    reader.setInput(imageStream, true, true);
    BufferedImage theImage = reader.read(0);
    reader.dispose();
    imageStream.close();
}

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From source file:Main.java

public static void main(String[] args) throws IOException {
    URL[] urls = { new URL("http://yourserver/small.png") };
    for (URL url : urls) {
        ImageInputStream iis = ImageIO.createImageInputStream(url.openStream());
        Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);

        System.out.println("url= " + url.getPath());
        while (readers.hasNext()) {
            ImageReader read = readers.next();
            System.out.println("format name = " + read.getFormatName());
        }//from w ww  .j a  v a  2 s . c o  m
        System.out.println();
    }
}

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From source file:Main.java

static public void main(String args[]) throws Exception {
    FileInputStream fin = new FileInputStream("a.gif");
    Iterator readers = ImageIO.getImageReadersBySuffix("GIF");
    ImageReader imageReader = (ImageReader) readers.next();
    ImageInputStream iis = ImageIO.createImageInputStream(fin);
    imageReader.setInput(iis, false);/* ww  w  .j av a 2  s .  c o  m*/

    imageReader.addIIOReadProgressListener(new IIOReadProgressListener() {
        public void imageComplete(ImageReader source) {
            System.out.println("image complete " + source);
        }

        public void imageProgress(ImageReader source, float percentageDone) {
            System.out.println("image progress " + source + ": " + percentageDone + "%");
        }

        public void imageStarted(ImageReader source, int imageIndex) {
            System.out.println("image #" + imageIndex + " started " + source);
        }

        public void readAborted(ImageReader source) {
            System.out.println("read aborted " + source);
        }

        public void sequenceComplete(ImageReader source) {
            System.out.println("sequence complete " + source);
        }

        public void sequenceStarted(ImageReader source, int minIndex) {
            System.out.println("sequence started " + source + ": " + minIndex);
        }

        public void thumbnailComplete(ImageReader source) {
            System.out.println("thumbnail complete " + source);
        }

        public void thumbnailProgress(ImageReader source, float percentageDone) {
            System.out.println("thumbnail started " + source + ": " + percentageDone + "%");
        }

        public void thumbnailStarted(ImageReader source, int imageIndex, int thumbnailIndex) {
            System.out.println("thumbnail progress " + source + ", " + thumbnailIndex + " of " + imageIndex);
        }
    });

    BufferedImage image = imageReader.read(0);

    Iterator imageWriters = ImageIO.getImageWritersBySuffix("JPG");
    ImageWriter imageWriter = (ImageWriter) imageWriters.next();
    File file = new File("b.JPG");
    ImageOutputStream ios = ImageIO.createImageOutputStream(file);
    imageWriter.setOutput(ios);
    imageWriter.write(image);
}

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From source file:it.tidalwave.imageio.example.stats.FocalLengthStats.java

public static void main(final String[] args) {
    try {/*from   w  w w  . ja  v a  2 s  . c  o  m*/
        final PrintWriter out = new PrintWriter(new File(args[1]));
        new DirectoryWalker() {
            @Override
            protected void handleFile(final File file, final int depth, final Collection results)
                    throws IOException {
                if (file.getName().toUpperCase().endsWith(".NEF")) {
                    System.out.printf("Processing %s...\n", file.getCanonicalPath());
                    final ImageReader reader = (ImageReader) ImageIO.getImageReaders(file).next();
                    reader.setInput(ImageIO.createImageInputStream(file));
                    final IIOMetadata metadata = reader.getImageMetadata(0);
                    final NEFMetadata nefMetadata = (NEFMetadata) metadata;
                    final IFD exifIFD = nefMetadata.getExifIFD();
                    final TagRational focalLength = exifIFD.getFocalLength();
                    out.println(focalLength.doubleValue());
                }
            }

            public void start() throws IOException {
                super.walk(new File(args[0]), new ArrayList<Object>());
            }
        }.start();

        out.flush();
        out.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:Main.java

private static String getFormatName(Object o) {
    try {/*www. j  a v a  2s.c o  m*/
        ImageInputStream iis = ImageIO.createImageInputStream(o);
        Iterator iter = ImageIO.getImageReaders(iis);
        if (!iter.hasNext()) {
            return null;
        }
        ImageReader reader = (ImageReader) iter.next();
        iis.close();

        return reader.getFormatName();
    } catch (IOException e) {
    }
    return null;
}

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From source file:Main.java

public static BufferedImage readFragment(InputStream stream, Rectangle rect) throws IOException {
    ImageInputStream imageStream = ImageIO.createImageInputStream(stream);
    ImageReader reader = ImageIO.getImageReaders(imageStream).next();
    ImageReadParam param = reader.getDefaultReadParam();

    param.setSourceRegion(rect);/*from   www . j a v  a  2 s  .co  m*/
    reader.setInput(imageStream, true, true);
    BufferedImage image = reader.read(0, param);

    reader.dispose();
    imageStream.close();

    return image;
}

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From source file:de.mpg.imeji.presentation.metadata.extractors.BasicExtractor.java

public static List<String> extractTechMd(Item item) throws Exception {
    List<String> techMd = new ArrayList<String>();
    URI uri = item.getFullImageUrl();
    String imageUrl = uri.toURL().toString();
    GetMethod method = new GetMethod(imageUrl);
    method.setFollowRedirects(false);//w w w . java2 s  .c  o m
    String userHandle = null;
    userHandle = LoginHelper.login(PropertyReader.getProperty("imeji.escidoc.user"),
            PropertyReader.getProperty("imeji.escidoc.password"));
    method.addRequestHeader("Cookie", "escidocCookie=" + userHandle);
    HttpClient client = new HttpClient();
    client.executeMethod(method);
    InputStream input = method.getResponseBodyAsStream();
    ImageInputStream iis = ImageIO.createImageInputStream(input);
    Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);
    if (readers.hasNext()) {
        // pick the first available ImageReader
        ImageReader reader = readers.next();
        // attach source to the reader
        reader.setInput(iis, true);
        // read metadata of first image
        IIOMetadata metadata = reader.getImageMetadata(0);
        String[] names = metadata.getMetadataFormatNames();
        int length = names.length;
        for (int i = 0; i < length; i++) {
            displayMetadata(techMd, metadata.getAsTree(names[i]));
        }
    }
    return techMd;
}

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From source file:Main.java

public Main(String filename) throws Exception {
    FileInputStream fin = new FileInputStream(filename);
    String suffix = filename.substring(filename.lastIndexOf('.') + 1);
    System.out.println("suf " + suffix);
    Iterator readers = ImageIO.getImageReadersBySuffix(suffix);
    ImageReader imageReader = (ImageReader) readers.next();
    ImageInputStream iis = ImageIO.createImageInputStream(fin);
    imageReader.setInput(iis, false);/*from  w w  w  .j  a  v  a2 s  .c  o m*/
    int num = imageReader.getNumImages(true);
    images = new BufferedImage[num];
    for (int i = 0; i < num; ++i) {
        images[i] = imageReader.read(i);
    }
    fin.close();
}

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From source file:Main.java

public Main() throws Exception {
    String filename = "a.png";
    FileInputStream inputStream = new FileInputStream(filename);
    String extensionName = filename.substring(filename.lastIndexOf('.') + 1);
    Iterator readers = ImageIO.getImageReadersBySuffix(extensionName);
    ImageReader imageReader = (ImageReader) readers.next();
    ImageInputStream imageInputStream = ImageIO.createImageInputStream(inputStream);
    imageReader.setInput(imageInputStream, false);
    int num = imageReader.getNumImages(true);
    images = new BufferedImage[num];
    for (int i = 0; i < num; ++i) {
        images[i] = imageReader.read(i);
    }/*from  w  w  w  .j a va2 s  .co m*/
    inputStream.close();
}

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From source file:ImageUtilities.java

/**
 * Returns the format of an image (as string).
 * /*from   w  w  w.ja  v  a2  s .  c om*/
 * @param stream
 *            image source stream
 * 
 * @return format stream (e.g. "JPEG")
 * 
 * @throws IOException
 *             if an I/O error occured
 */
public static String getFormat(InputStream stream) throws IOException {
    ImageInputStream iis = ImageIO.createImageInputStream(stream);
    Iterator iter = ImageIO.getImageReaders(iis);
    if (!iter.hasNext()) {
        throw new IOException("Unsupported image format!");
    }
    ImageReader reader = (ImageReader) iter.next();
    iis.close();
    return reader.getFormatName();
}

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