Example usage for javax.imageio.stream ImageInputStream flush

Introduction

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

Prototype

void flush() throws IOException;

Source Link

Document

Discards the initial position of the stream prior to the current stream position.

Usage

From source file:net.filterlogic.util.imaging.ToTIFF.java

/**
 * Convert multipage TIFF to single page TIFF.
 * @param srcFiles Array of source files to convert.
 * @param destPath Folder to store single page TIFFs in.
 * @param archivePath Path to move source TIFF files to after single page TIFFs created.
 * @param pattern Pattern of single page TIFF file names.  Java NumberFormatter used with page number to create file name.
 * @param multipage Set to true if source TIFFs should be coverted to multi-page TIFF.
 * @param dpi DPI to set TIFFs to.//from   w  w  w. ja v a 2 s.  c o m
 * @return Returns a list of files in destination path.
 * @throws net.filterlogic.util.imaging.OpenCaptureImagingException
 */
public static List toTIFF(String[] srcFiles, String destPath, String archivePath, String pattern,
        boolean multipage, int dpi) throws OpenCaptureImagingException {
    String pathSep = System.getProperty("file.separator");
    boolean jaiSupport = true;

    int pageCount = 0;
    int fileNameCount = 0;

    byte[] imageData = null;

    // make sure destpath has trailing slash.
    if (destPath.lastIndexOf(pathSep) != destPath.length() - 1)
        destPath += pathSep;

    // create path if doesn't exist
    if (!Path.ValidatePath(destPath))
        if (!Path.createPath(destPath))
            throw new OpenCaptureImagingException(
                    "Unable to create destination path for imported images [" + destPath + "]");

    // make sure archivePath has trailing slash
    if (archivePath.lastIndexOf(pathSep) != archivePath.length() - 1)
        archivePath += pathSep;

    if (!Path.ValidatePath(archivePath))
        if (!Path.createPath(archivePath))
            throw new OpenCaptureImagingException(
                    "Unable to create archive path for imported images [" + archivePath + "]");

    // set a default pattern if one not passed.
    if (pattern.trim().length() < 1)
        pattern = "#";

    NumberFormat formatter = new DecimalFormat(pattern);

    ArrayList<String> list = new ArrayList<String>();

    for (int i = 0; i < srcFiles.length; i++) {
        try {

            File f = new File(srcFiles[i]);
            imageData = null;

            ImageIO.setUseCache(false);
            ImageInputStream imageInputStream = ImageIO.createImageInputStream(f);
            java.util.Iterator readers = ImageIO.getImageReaders(imageInputStream);

            ImageReader reader1 = null;

            if (readers.hasNext()) {
                reader1 = (ImageReader) readers.next();
                jaiSupport = true;
            } else
                jaiSupport = false;

            if (jaiSupport) {
                //ImageInputStream iis = ImageIO.createImageInputStream(new FileInputStream(f));
                reader1.setInput(imageInputStream);

                pageCount = reader1.getNumImages(true);
            } else {
                String newFileName = bigEndian2LittleEndian(f.getAbsolutePath());

                if (imageInputStream != null) {
                    imageInputStream.flush();
                    imageInputStream.close();

                    reader1.setInput(imageInputStream);
                    pageCount = reader1.getNumImages(true);

                }

                imageInputStream = ImageIO.createImageInputStream(new File(newFileName));

                readers = ImageIO.getImageReaders(imageInputStream);

            }
            //                Iterator writers = ImageIO.getImageWritersByFormatName("tiff");
            //                ImageWriter writer = (ImageWriter)writers.next();

            //ImageWriteParam param = writer.getDefaultWriteParam();

            //param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);

            //String[] legalTypes = param.getCompressionTypes();

            //param.setCompressionType("PackBits");

            //ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
            ImageOutputStream ios = null;
            BufferedImage img = null;

            // break out each page to single file
            for (int t = 0; t < pageCount; t++) {

                // format filenumber
                String tifName = destPath + formatter.format(fileNameCount) + ".tif";

                while (new File(tifName).exists()) {
                    tifName = destPath + formatter.format(++fileNameCount) + ".tif";
                }

                FileOutputStream file = new FileOutputStream(new File(tifName));

                if (jaiSupport) {
                    img = reader1.read(t);
                    IIOImage iioimg = reader1.readAll(t, null);
                    //ios = ImageIO.createImageOutputStream(file);
                    //IIOMetadata iiom = getMetadata(writer, img, null, 200);
                } else {
                    img = loadTIFF(imageData, t);
                }
                TIFFEncodeParam tep = setEncoder(TIFFEncodeParam.COMPRESSION_PACKBITS, 200);

                ImageEncoder encoder = ImageCodec.createImageEncoder("TIFF", file, tep);

                encoder.encode(img);
                //boolean ok = ImageIO.write(img, "tiff", ios);
                //writer.setOutput(ios);
                //writer.write(iiom, iioimg, null);

                img.flush();

                //ios.flush();
                //ios.close();
                // ios = null;
                //iioimg = null;
                //iiom = null;
                img = null;
                //writer.dispose();
                //byteOut.flush();
                file.close();

                file = null;

                //System.out.println("Add file!");

                list.add(tifName);
            }

            if (jaiSupport) {
                reader1.dispose();
            }

            readers = null;

            //                writer.dispose();
            //                writers = null;

            imageInputStream.flush();
            imageInputStream.close();
            imageInputStream = null;

            f = null;

            // move file with overwrite
            if (!net.filterlogic.io.FileAccess.Move(srcFiles[i], archivePath, true))
                throw new Exception("Unable to move input file to archive path [" + srcFiles[i] + "] to ["
                        + archivePath + "]");

        } catch (Exception e) {
            throw new OpenCaptureImagingException(e.toString());
        }
    }

    return list;
}

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