Example usage for javax.imageio ImageIO getImageReadersByFormatName

Introduction

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

Prototype

public static Iterator<ImageReader> getImageReadersByFormatName(String formatName) 

Source Link

Document

Returns an Iterator containing all currently registered ImageReader s that claim to be able to decode the named format.

Usage

From source file:Main.java

public static boolean canReadFormat(String formatName) {
    Iterator iter = ImageIO.getImageReadersByFormatName(formatName);
    return iter.hasNext();
}

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From source file:it.reexon.lib.files.FileUtils.java

/**
 * Utility method to read image from disk and transform image to BufferedImage object 
 *  //from   w  w  w . j  a va2  s. c  o  m
 * @param data - relative path to the image 
 * @param format - file prefix of the image 
 * @return BufferedImage representation of the image 
 *  
 */
public static BufferedImage bitmapToImage(InputStream is, String format) throws IOException {
    final ImageReader rdr = ImageIO.getImageReadersByFormatName(format).next();
    final ImageInputStream imageInput = ImageIO.createImageInputStream(is);
    rdr.setInput(imageInput);
    final BufferedImage image = rdr.read(0);
    is.close();
    return image;
}

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From source file:com.google.testing.web.screenshotter.Screenshot.java

/**
 * Returns a BufferedImage of the screenshot. Every call to this returns a new copy of the image.
 *//*ww  w  .ja  v a  2 s .c  o m*/
public BufferedImage asImage() throws IOException {
    ImageReader imageReader = ImageIO.getImageReadersByFormatName(FORMAT).next();
    imageReader.setInput(ImageIO.createImageInputStream(new ByteArrayInputStream(asBytes())), true);
    return imageReader.read(0);
}

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From source file:org.apache.pdfbox.filter.JBIG2Filter.java

/**
 * Decode JBIG2 data using Java ImageIO library.
 *
 * {@inheritDoc}/* w  w  w. jav a2s . c o  m*/
 *
 */
public void decode(InputStream compressedData, OutputStream result, COSDictionary options, int filterIndex)
        throws IOException {
    BufferedImage bi = ImageIO.read(compressedData);
    if (bi != null) {
        DataBuffer dBuf = bi.getData().getDataBuffer();
        if (dBuf.getDataType() == DataBuffer.TYPE_BYTE) {
            result.write(((DataBufferByte) dBuf).getData());
        } else {
            log.error("Image data buffer not of type byte but type " + dBuf.getDataType());
        }
    } else {
        Iterator<ImageReader> reader = ImageIO.getImageReadersByFormatName("JBIG2");
        if (!reader.hasNext()) {
            log.error("Can't find an ImageIO plugin to decode the JBIG2 encoded datastream.");
        } else {
            log.error("Something went wrong when decoding the JBIG2 encoded datastream.");
        }
    }
}

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

private static BufferedImage readJpeg(Object fileOrStream) throws IOException {
    Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
    ImageReader reader = null;/*from w w w.j  a  v  a 2 s . c o  m*/
    while (readers.hasNext()) {
        reader = readers.next();
        if (reader.canReadRaster()) {
            break;
        }
    }
    requireIOCondition(nonNull(reader), "Cannot find an ImageIO reader for JPEG image");

    try (ImageInputStream iis = ImageIO.createImageInputStream(fileOrStream)) {
        reader.setInput(iis);
        ImageIO.setUseCache(false);
        return reader.read(0);
    } finally {
        reader.dispose();
    }
}

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From source file:com.jaeksoft.searchlib.util.ImageUtils.java

public static ImageReader findImageReader(String formatName) {
    Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(formatName);
    ImageReader reader = null;/*from w ww .  j  av a  2 s.c o m*/
    while (readers.hasNext()) {
        reader = (ImageReader) readers.next();
        if (reader.canReadRaster())
            return reader;
    }
    return null;
}

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From source file:org.apache.pdfbox.filter.Filter.java

/**
 * Finds a suitable image reader for a format.
 *
 * @param formatName The format to search for.
 * @param errorCause The probably cause if something goes wrong.
 * @return The image reader for the format.
 * @throws MissingImageReaderException if no image reader is found.
 *///from ww w.java 2 s  . c o m
protected static ImageReader findImageReader(String formatName, String errorCause)
        throws MissingImageReaderException {
    Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(formatName);
    ImageReader reader = null;
    while (readers.hasNext()) {
        reader = readers.next();
        if (reader.canReadRaster()) {
            break;
        }
    }
    if (reader == null) {
        throw new MissingImageReaderException("Cannot read " + formatName + " image: " + errorCause);
    }
    return reader;
}

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From source file:it.geosolutions.imageio.plugins.nitronitf.ImageIOUtils.java

/**
 * Returns an ImageReader given the format, and sets the input source
 * /*from   www .ja v  a2  s .c o m*/
 * @param file
 * @return
 * @throws IOException
 */
public static ImageReader getImageReader(String format, Object input) throws IOException {
    ImageReader reader = null;
    Iterator<ImageReader> imageReaders = ImageIO.getImageReadersByFormatName(format);
    if (imageReaders.hasNext()) {
        reader = imageReaders.next();
        reader.setInput(input);
    }
    return reader;
}

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From source file:de.yaio.services.metaextract.server.extractor.TesseractExtractor.java

protected boolean isFileSupported(final String imageFileName) {
    String imageFormat = imageFileName.substring(imageFileName.lastIndexOf('.') + 1);
    if (imageFormat.matches("(pbm|pgm|ppm)")) {
        imageFormat = "pnm";
    } else if (imageFormat.matches("(jp2|j2k|jpf|jpx|jpm)")) {
        imageFormat = "jpeg2000";
    }//from w w w.ja v  a2 s .  c  om
    Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(imageFormat);

    if (!readers.hasNext()) {
        return false;
    }

    return true;
}

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From source file:FileUtils.java

/**
 * Utility method to read image from disk and transform image to BufferedImage object
 * @param data - relative path to the image
 * @param format - file prefix of the image
 * @return BufferedImage representation of the image
 *
 *///from  w w  w.  j  av  a 2  s  . c  om
public static BufferedImage bitmapToImage(String data, String format) throws IOException {
    final InputStream inb = new FileInputStream(data);
    final ImageReader rdr = ImageIO.getImageReadersByFormatName(format).next();
    final ImageInputStream imageInput = ImageIO.createImageInputStream(inb);
    rdr.setInput(imageInput);
    final BufferedImage image = rdr.read(0);
    inb.close();
    return image;
}

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