Example usage for java.nio ByteOrder LITTLE_ENDIAN

Introduction

In this page you can find the example usage for java.nio ByteOrder LITTLE_ENDIAN.

Prototype

ByteOrder LITTLE_ENDIAN

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Document

This constant represents little endian.

Usage

From source file:org.jtransforms.fft.DoubleFFT_1DTest.java

/**
 * Read the binary reference data files generated with FFTW. The structure
 * of these files is very simple: double values are written linearly (little
 * endian)./*  ww  w .  j  a va 2  s  .c om*/
 *
 * @param name
 *             the file name
 * @param data
 *             the array to be updated with the data read (the size of this
 *             array gives the number of <code>double</code> to be retrieved
 */
public void readData(final String name, final double[] data) {
    try {
        final File f = new File(getClass().getClassLoader().getResource(name).getFile());
        final FileInputStream fin = new FileInputStream(f);
        final FileChannel fc = fin.getChannel();
        final ByteBuffer buffer = ByteBuffer.allocate(8 * data.length);
        buffer.order(ByteOrder.LITTLE_ENDIAN);
        fc.read(buffer);
        for (int i = 0; i < data.length; i++) {
            data[i] = buffer.getDouble(8 * i);
        }
    } catch (IOException e) {
        Assert.fail(e.getMessage());
    }
}

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From source file:com.tesora.dve.db.mysql.common.MysqlAPIUtils.java

public static ArrayList<Integer> locateLengthCodedStrings(ByteBuf cb, int skipAmount) {
    ArrayList<Integer> offsets = new ArrayList<>();
    ByteBuf slice = cb.slice().order(ByteOrder.LITTLE_ENDIAN);
    slice.skipBytes(skipAmount);/*from w  ww  . j  av  a 2s . com*/
    while (slice.isReadable()) {
        offsets.add(slice.readerIndex());
        skipLengthCodedString(slice);
    }
    return offsets;
}

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From source file:org.apache.nifi.processors.evtx.parser.BinaryReader.java

/**
 * Reads 8 bytes in litte endian order and returns the UnsignedLong value
 *
 * @return the value//from  w  w  w.j a  v  a2 s . co  m
 */
public UnsignedLong readQWord() {
    ByteBuffer byteBuffer = ByteBuffer.wrap(bytes, position, 8);
    position += 8;
    return UnsignedLong.fromLongBits(byteBuffer.order(ByteOrder.LITTLE_ENDIAN).getLong());
}

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From source file:org.apache.nifi.processors.evtx.parser.BinaryReader.java

/**
 * Reads 4 bytes in little endian order and returns the UnsignedInteger value
 *
 * @return the value// w w  w  .  j ava  2s .co m
 */
public UnsignedInteger readDWord() {
    ByteBuffer byteBuffer = ByteBuffer.wrap(bytes, position, 4);
    position += 4;
    return UnsignedInteger.fromIntBits(byteBuffer.order(ByteOrder.LITTLE_ENDIAN).getInt());
}

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From source file:nl.salp.warcraft4j.casc.cdn.local.LocalIndexFileParser.java

/**
 * Read and parse the index file header.
 *
 * @param reader The reader to read the header data from.
 *
 * @return The parsed index file header.
 *
 * @throws CascParsingException When the header is invalid.
 * @throws DataReadingException When reading the entry data failed.
 * @throws DataParsingException When parsing the entry data failed.
 *//*from   ww w  . ja va2 s .c o m*/
private IndexHeaderV2 parseHeader(DataReader reader)
        throws CascParsingException, DataReadingException, DataParsingException {
    int indexVersion = reader.readNext(DataTypeFactory.getUnsignedShort(), ByteOrder.LITTLE_ENDIAN);
    if (indexVersion != 0x07) {
        throw new CascParsingException(
                format("Invalid index file header version 0x%02X, requires 0x07", indexVersion));
    }
    byte keyIndex = reader.readNext(DataTypeFactory.getByte());
    byte extraBytes = reader.readNext(DataTypeFactory.getByte());
    byte spanSizeBytes = reader.readNext(DataTypeFactory.getByte());
    byte spanOffsetBytes = reader.readNext(DataTypeFactory.getByte());
    byte keyBytes = reader.readNext(DataTypeFactory.getByte());
    byte segmentBits = reader.readNext(DataTypeFactory.getByte());
    long maxFileOffset = reader.readNext(DataTypeFactory.getLong(), ByteOrder.BIG_ENDIAN);
    if (extraBytes != 0x00 || spanSizeBytes != 0x04 || spanOffsetBytes != 0x05 || keyBytes != 0x09) {
        throw new CascParsingException("Invalid index file header");
    }
    return new IndexHeaderV2(indexVersion, keyIndex, extraBytes, spanSizeBytes, spanOffsetBytes, keyBytes,
            segmentBits, maxFileOffset);
}

---

From source file:com.sanlq.common.IPIP.java

private void loadToTree() {
    FileInputStream fin = null;/*from   w  w w .ja va  2s .  c om*/
    lock.lock();
    try {
        if (IPDB_FILE_CONTENT == null) {
            IPDB_FILE_CONTENT = readHDFSFile("/data/lib/ipip/ipdb.dat");
        }
        if (IPDB_FILE_CONTENT != null) {
            dataBuffer = ByteBuffer.allocate(Long.valueOf(IPDB_FILE_CONTENT.length).intValue());
            dataBuffer.put(IPDB_FILE_CONTENT);
            dataBuffer.position(0);
            int indexLength = dataBuffer.getInt();
            byte[] indexBytes = new byte[indexLength];
            dataBuffer.get(indexBytes, 0, indexLength - 4);
            indexBuffer = ByteBuffer.wrap(indexBytes);
            indexBuffer.order(ByteOrder.LITTLE_ENDIAN);
            offset = indexLength;
            int loop = 0;
            while (loop++ < 256) {
                index[loop - 1] = indexBuffer.getInt();
            }
            indexBuffer.order(ByteOrder.BIG_ENDIAN);
        }
    } finally {
        lock.unlock();
    }
}

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From source file:au.org.ala.delta.io.BinFile.java

public void writeBytes(byte[] buffer) {
    try {//from w ww . java 2s.com
        ByteBuffer bb = ByteBuffer.allocate(buffer.length);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        bb.put(buffer);
        bb.position(0);
        _channel.write(bb);
        // _file.write(buffer);
    } catch (IOException ioex) {
        throw new RuntimeException(ioex);
    }
}

---

From source file:au.org.ala.delta.io.BinaryKeyFile.java

public int writeToRecord(int recordNumber, List<Integer> values) {
    ByteBuffer bytes = ByteBuffer.allocate(values.size() * SIZE_INT_IN_BYTES);
    bytes.order(ByteOrder.LITTLE_ENDIAN);
    for (int value : values) {
        bytes.putInt(value);//from   w  w w  .j a va 2 s  .  c om
    }
    return writeToRecord(recordNumber, 0, bytes.array());
}

---

From source file:ome.io.bioformats.BfPyramidPixelBuffer.java

private synchronized void initializeReader() throws IOException, FormatException {
    if (isLockedByOthers()) {
        throw new LockTimeout(String.format("%s is locked by others", readerFile.getAbsolutePath()), 15 * 1000,
                0);/*from   w ww.  j  av  a 2  s .c  o m*/
    }
    reader = new OmeroPixelsPyramidReader();
    delegate = new BfPixelBuffer(readerFile.getAbsolutePath(), reader);
    byteOrder = delegate.isLittleEndian() ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN;
}

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From source file:ffx.xray.MTZFilter.java

/**
 * {@inheritDoc}//from  w ww .  ja  v a 2  s.com
 */
@Override
public ReflectionList getReflectionList(File mtzFile, CompositeConfiguration properties) {
    ByteOrder b = ByteOrder.nativeOrder();
    FileInputStream fis;
    DataInputStream dis;
    try {
        fis = new FileInputStream(mtzFile);
        dis = new DataInputStream(fis);

        byte headeroffset[] = new byte[4];
        byte bytes[] = new byte[80];
        int offset = 0;

        // eat "MTZ" title
        dis.read(bytes, offset, 4);
        String mtzstr = new String(bytes);

        // header offset
        dis.read(headeroffset, offset, 4);

        // machine stamp
        dis.read(bytes, offset, 4);
        ByteBuffer bb = ByteBuffer.wrap(bytes);
        int stamp = bb.order(ByteOrder.BIG_ENDIAN).getInt();
        String stampstr = Integer.toHexString(stamp);
        switch (stampstr.charAt(0)) {
        case '1':
        case '3':
            if (b.equals(ByteOrder.LITTLE_ENDIAN)) {
                b = ByteOrder.BIG_ENDIAN;
            }
            break;
        case '4':
            if (b.equals(ByteOrder.BIG_ENDIAN)) {
                b = ByteOrder.LITTLE_ENDIAN;
            }
            break;
        }

        bb = ByteBuffer.wrap(headeroffset);
        int headeroffseti = bb.order(b).getInt();

        // skip to header and parse
        dis.skipBytes((headeroffseti - 4) * 4);

        for (Boolean parsing = true; parsing; dis.read(bytes, offset, 80)) {
            mtzstr = new String(bytes);
            parsing = parseHeader(mtzstr);
        }
    } catch (EOFException eof) {
        System.out.println("EOF reached ");
    } catch (IOException ioe) {
        System.out.println("IO Exception: " + ioe.getMessage());
        return null;
    }

    // column identifiers
    foString = sigfoString = rfreeString = null;
    if (properties != null) {
        foString = properties.getString("fostring", null);
        sigfoString = properties.getString("sigfostring", null);
        rfreeString = properties.getString("rfreestring", null);
    }
    h = k = l = fo = sigfo = rfree = -1;
    fplus = sigfplus = fminus = sigfminus = rfreeplus = rfreeminus = -1;
    fc = phic = -1;
    boolean print = false;
    parseColumns(print);
    parseFcColumns(print);

    if (fo < 0 && fplus < 0 && sigfo < 0 && sigfplus < 0 && fc < 0 && phic < 0) {
        logger.info(
                " The MTZ header contains insufficient information to generate the reflection list.\n For non-default column labels set fostring/sigfostring in the properties file.");
        return null;
    }

    Column c;
    if (fo > 0) {
        c = (Column) columns.get(fo);
    } else if (fplus > 0) {
        c = (Column) columns.get(fplus);
    } else {
        c = (Column) columns.get(fc);
    }
    Dataset d = (Dataset) datasets.get(c.id - dsetoffset);

    if (logger.isLoggable(Level.INFO)) {
        StringBuilder sb = new StringBuilder();
        sb.append(String.format("\n Reading %s\n\n", mtzFile.getName()));
        sb.append(String.format(" Setting up reflection list based on MTZ file.\n"));
        sb.append(String.format(" Space group number: %d (name: %s)\n", sgnum,
                SpaceGroup.spaceGroupNames[sgnum - 1]));
        sb.append(String.format(" Resolution: %8.3f\n", 0.999999 * resHigh));
        sb.append(String.format(" Cell: %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f\n", d.cell[0], d.cell[1], d.cell[2],
                d.cell[3], d.cell[4], d.cell[5]));
        logger.info(sb.toString());
    }

    Crystal crystal = new Crystal(d.cell[0], d.cell[1], d.cell[2], d.cell[3], d.cell[4], d.cell[5],
            SpaceGroup.spaceGroupNames[sgnum - 1]);

    double sampling = 0.6;
    if (properties != null) {
        sampling = properties.getDouble("sampling", 0.6);
    }
    Resolution resolution = new Resolution(0.999999 * resHigh, sampling);

    return new ReflectionList(crystal, resolution, properties);
}

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