Example usage for javax.imageio.stream FileImageInputStream FileImageInputStream

Introduction

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

Prototype

public FileImageInputStream(RandomAccessFile raf)

Source Link

Document

Constructs a FileImageInputStream that will read from a given RandomAccessFile .

Usage

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

/**
 * Creates and returns an {@link ImageReader} instance from the {@code sourceFile}.
 * @param sourceFile source file/*from w  ww .ja  v a  2s.c  om*/
 * @return an {@link ImageReader} instance
 * @throws IOException if IOException occurs
 */
private static ImageReader getImageReader(File sourceFile) throws IOException {
    ImageReader reader = null;
    String extension = FilenameUtils.getExtension(sourceFile.getName());
    Iterator<ImageReader> it = ImageIO.getImageReadersBySuffix(extension);

    if (it.hasNext()) {
        reader = it.next();
        ImageInputStream input = new FileImageInputStream(sourceFile);
        reader.setInput(input);
    }

    return reader;
}

From source file:org.openmrs.obs.handler.ImageHandler.java

/**
 * Currently supports all views and puts the Image file data into the ComplexData object
 * /*from ww w  .  j av a 2  s.  co m*/
 * @see org.openmrs.obs.ComplexObsHandler#getObs(org.openmrs.Obs, java.lang.String)
 */
public Obs getObs(Obs obs, String view) {
    File file = getComplexDataFile(obs);

    // Raw image
    if (ComplexObsHandler.RAW_VIEW.equals(view)) {
        BufferedImage img = null;
        try {
            img = ImageIO.read(file);
        } catch (IOException e) {
            log.error("Trying to read file: " + file.getAbsolutePath(), e);
        }

        ComplexData complexData = new ComplexData(file.getName(), img);

        // Image MIME type
        try {
            FileImageInputStream imgStream = new FileImageInputStream(file);
            Iterator<ImageReader> imgReader = ImageIO.getImageReaders(imgStream);
            imgStream.close();
            if (imgReader.hasNext()) {
                complexData.setMimeType("image/" + imgReader.next().getFormatName().toLowerCase());
            } else {
                log.warn("MIME type of " + file.getAbsolutePath() + " is not known");
            }
        } catch (FileNotFoundException e) {
            log.error("Image " + file.getAbsolutePath() + " was not found", e);
        } catch (IOException e) {
            log.error("Trying to determine MIME type of " + file.getAbsolutePath(), e);
        }

        obs.setComplexData(complexData);
    } else {
        // No other view supported
        // NOTE: if adding support for another view, don't forget to update supportedViews list above
        return null;
    }

    return obs;
}

From source file:org.psystems.dicomweb.Dcm2Dcm.java

/**
 * Recodes the images from the source transfer syntax, as read from the src
 * file, to the specified destination syntax.
 *//*w w w.j  av a2  s  . co  m*/
public void recodeImages(File src, File dest) throws IOException {

    ImageReader reader = new DicomImageReaderSpi().createReaderInstance();
    ImageWriter writer = new DicomImageWriterSpi().createWriterInstance();
    FileImageInputStream input = new FileImageInputStream(src);
    reader.setInput(input);
    if (dest.exists())
        dest.delete();
    FileImageOutputStream output = new FileImageOutputStream(dest);
    writer.setOutput(output);
    DicomStreamMetaData streamMeta = (DicomStreamMetaData) reader.getStreamMetadata();
    DicomObject ds = streamMeta.getDicomObject();
    DicomStreamMetaData writeMeta = (DicomStreamMetaData) writer.getDefaultStreamMetadata(null);
    DicomObject newDs = new BasicDicomObject();
    ds.copyTo(newDs);
    writeMeta.setDicomObject(newDs);
    int frames = ds.getInt(Tag.NumberOfFrames, 1);
    LookupTable lut = prepareBitStrip(writeMeta, reader);
    newDs.putString(Tag.TransferSyntaxUID, VR.UI, destinationSyntax.uid());
    if (overwriteObject != null) {
        overwriteObject.copyTo(newDs);
    }
    writer.prepareWriteSequence(writeMeta);
    for (int i = 0; i < frames; i++) {
        WritableRaster r = (WritableRaster) reader.readRaster(i, null);
        ColorModel cm = ColorModelFactory.createColorModel(ds);
        BufferedImage bi = new BufferedImage(cm, r, false, null);
        if (lut != null) {
            lut.lookup(bi.getRaster(), bi.getRaster());
        }
        IIOImage iioimage = new IIOImage(bi, null, null);
        writer.writeToSequence(iioimage, null);
    }
    writer.endWriteSequence();
    output.close();
    input.close();
}

From source file:org.psystems.dicomweb.Dcm2DcmCopy.java

/**
 * Recodes the images from the source transfer syntax, as read from the src
 * file, to the specified destination syntax.
 *//*  ww  w.j  a  v  a 2  s . c  om*/
public void recodeImages(File src, File dest) throws IOException {
    ImageReader reader = new DicomImageReaderSpi().createReaderInstance();
    ImageWriter writer = new DicomImageWriterSpi().createWriterInstance();
    FileImageInputStream input = new FileImageInputStream(src);
    reader.setInput(input);
    if (dest.exists())
        dest.delete();
    FileImageOutputStream output = new FileImageOutputStream(dest);
    writer.setOutput(output);
    DicomStreamMetaData streamMeta = (DicomStreamMetaData) reader.getStreamMetadata();
    DicomObject ds = streamMeta.getDicomObject();
    DicomStreamMetaData writeMeta = (DicomStreamMetaData) writer.getDefaultStreamMetadata(null);
    DicomObject newDs = new BasicDicomObject();
    ds.copyTo(newDs);
    writeMeta.setDicomObject(newDs);
    int frames = ds.getInt(Tag.NumberOfFrames, 1);
    LookupTable lut = prepareBitStrip(writeMeta, reader);
    newDs.putString(Tag.TransferSyntaxUID, VR.UI, destinationSyntax.uid());
    if (overwriteObject != null) {
        overwriteObject.copyTo(newDs);
    }
    writer.prepareWriteSequence(writeMeta);
    for (int i = 0; i < frames; i++) {
        WritableRaster r = (WritableRaster) reader.readRaster(i, null);
        ColorModel cm = ColorModelFactory.createColorModel(ds);
        BufferedImage bi = new BufferedImage(cm, r, false, null);
        if (lut != null) {
            lut.lookup(bi.getRaster(), bi.getRaster());
        }
        IIOImage iioimage = new IIOImage(bi, null, null);
        writer.writeToSequence(iioimage, null);
    }
    writer.endWriteSequence();
    output.close();
    input.close();
}