Example usage for javax.imageio ImageReader getFormatName

Introduction

In this page you can find the example usage for javax.imageio ImageReader getFormatName.

Prototype

public String getFormatName() throws IOException 

Source Link

Document

Returns a String identifying the format of the input source.

Usage

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.ja  v a2s . c o  m
        System.out.println();
    }
}

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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;
    if (!readers.hasNext()) {
        imageStream.close();//from www  . j  a v  a  2  s .  c o m
        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

private static String getFormatName(Object o) {
    try {//www .j av  a  2 s .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:ImageUtilities.java

/**
 * Returns the format of an image (as string).
 * /*w  ww .  j  a  va2 s  .c o m*/
 * @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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From source file:de.javagl.jgltf.model.io.GltfUtils.java

/**
 * Tries to detect the format of the given image data, and return the
 * corresponding string of the <code>"image/..."</code> MIME type.
 * This may, for example, be <code>"png"</code> or <code>"gif"</code>
 * or <code>"jpeg"</code> (**not** <code>"jpg"</code>!)
 *  // w  w  w .  j  a v a  2 s.c  o  m
 * @param imageData The image data
 * @return The image format string
 * @throws IOException If the image format can not be detected
 */
private static String guessImageMimeTypeString(ByteBuffer imageData) throws IOException {
    ImageReader imageReader = null;
    try {
        imageReader = findImageReader(imageData);
        return imageReader.getFormatName();
    } finally {
        if (imageReader != null) {
            imageReader.dispose();
        }
    }

}

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From source file:net.sf.webphotos.tools.Thumbnail.java

private static String getFormatName(Object o) {
    try {//from   w  ww  .  ja  v  a 2 s .c om
        // Create an image input stream on the image
        ImageInputStream iis = ImageIO.createImageInputStream(o);

        // Find all image readers that recognize the image format
        Iterator<ImageReader> iter = ImageIO.getImageReaders(iis);
        if (!iter.hasNext()) {
            // No readers found
            return null;
        }

        // Use the first reader
        ImageReader reader = iter.next();

        // Close stream
        iis.close();

        // Return the format name
        return reader.getFormatName();
    } catch (Exception e) {
        // The image could not be read
        return null;
    }
}

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From source file:common.utils.ImageUtils.java

/**
 * closes iis// www.j a  va  2 s . c  o m
 * @param iis
 * @return image from given stream or null if no readers found
 * @throws java.io.IOException
 */
public static BufferedImageHolder readImage(ImageInputStream iis) throws IOException {
    ImageReader reader = getImageReader(iis);
    if (reader == null) {
        iis.close();
        return null;
    }
    reader.setInput(iis, true, true);
    ImageReadParam param = reader.getDefaultReadParam();
    String format_name = reader.getFormatName();
    BufferedImage bi;
    try {
        bi = reader.read(0, param);
    } finally {
        reader.dispose();
        iis.close();
    }
    return new BufferedImageHolder(bi, format_name);
}

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From source file:com.lm.lic.manager.util.GenUtil.java

public static String senseImageFormat(byte[] icon) throws Exception {
    try {/*from  w  w w .j  a v  a 2 s  .  c  o  m*/
        ByteArrayInputStream bais = new ByteArrayInputStream(icon);
        // Create an image input stream on the image
        ImageInputStream iis = ImageIO.createImageInputStream(bais);
        ImageIO.getReaderFormatNames();

        // Find all image readers that recognize the image format
        Iterator<ImageReader> iter = ImageIO.getImageReaders(iis);
        if (!iter.hasNext()) {
            return null;
        }
        ImageReader reader = iter.next();
        iis.close();
        return reader.getFormatName();
    } catch (IOException e) {
    }

    return null;
}

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From source file:gr.iti.mklab.reveal.forensics.util.Util.java

public static String getImageFormat(File inputImage) throws IOException {
    // Return a string describing the image format
    String format = null;//from  w  ww .j a va 2s.c o m
    ImageInputStream iis = ImageIO.createImageInputStream(inputImage);
    Iterator<ImageReader> iter = ImageIO.getImageReaders(iis);
    if (!iter.hasNext()) {
        throw new RuntimeException("No readers found! I don't think this is an image file");
    }
    ImageReader reader = iter.next();
    format = reader.getFormatName();
    return format;
}

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From source file:com.occamlab.te.parsers.ImageParser.java

/**
 * Determines the type of image, or null if not a valid image type
 * /*from  w w  w  . j a  va  2  s. c o  m*/
 * @param imageLoc
 *            the string location of the image (uri syntax expected)
 * @return String the name of the image type/format, or null if not valid
 */
public static String getImageType(String imageLoc) {

    // Get the image as an InputStream
    InputStream is = null;
    try {
        URI imageUri = new URI(imageLoc);
        URL imageUrl = imageUri.toURL();
        is = imageUrl.openStream();
    } catch (Exception e) {
        jlogger.log(Level.SEVERE, "getImageType", e);

        return null;
    }

    // Determine the image type and return it if valid
    try {
        // Create an image input stream on the image
        ImageInputStream iis = ImageIO.createImageInputStream(is);

        // Find all image readers that recognize the image format
        Iterator iter = ImageIO.getImageReaders(iis);

        // No readers found
        if (!iter.hasNext()) {
            return null;
        }

        // Use the first reader
        ImageReader reader = (ImageReader) iter.next();
        iis.close();

        // Return the format name
        return reader.getFormatName();
    } catch (IOException e) {
        jlogger.log(Level.SEVERE, "getImageType", e);

    }

    // The image could not be read
    return null;
}

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