Example usage for java.nio ByteBuffer getInt

Introduction

In this page you can find the example usage for java.nio ByteBuffer getInt.

Prototype

public abstract int getInt();

Source Link

Document

Returns the int at the current position and increases the position by 4.

Usage

From source file:au.org.ala.layers.grid.GridCacheBuilder.java

static void nextRowOfFloats(float[] row, String datatype, boolean byteOrderLSB, int ncols, RandomAccessFile raf,
        byte[] b, float noDataValue) throws IOException {
    int size = 4;
    if (datatype.charAt(0) == 'U') {
        size = 1;//  w w  w.j  a  va  2  s  .  co  m
    } else if (datatype.charAt(0) == 'B') {
        size = 1;
    } else if (datatype.charAt(0) == 'S') {
        size = 2;
    } else if (datatype.charAt(0) == 'I') {
        size = 4;
    } else if (datatype.charAt(0) == 'L') {
        size = 8;
    } else if (datatype.charAt(0) == 'F') {
        size = 4;
    } else if (datatype.charAt(0) == 'D') {
        size = 8;
    }

    raf.read(b, 0, size * ncols);
    ByteBuffer bb = ByteBuffer.wrap(b);
    if (byteOrderLSB) {
        bb.order(ByteOrder.LITTLE_ENDIAN);
    } else {
        bb.order(ByteOrder.BIG_ENDIAN);
    }

    int i;
    int length = ncols;
    if (datatype.charAt(0) == 'U') {
        for (i = 0; i < length; i++) {
            float ret = bb.get();
            if (ret < 0) {
                ret += 256;
            }
            row[i] = ret;
        }
    } else if (datatype.charAt(0) == 'B') {

        for (i = 0; i < length; i++) {
            row[i] = (float) bb.get();
        }
    } else if (datatype.charAt(0) == 'S') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getShort();
        }
    } else if (datatype.charAt(0) == 'I') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getInt();
        }
    } else if (datatype.charAt(0) == 'L') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getLong();
        }
    } else if (datatype.charAt(0) == 'F') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getFloat();
        }
    } else if (datatype.charAt(0) == 'D') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getDouble();
        }
    } else {
        logger.info("UNKNOWN TYPE: " + datatype);
    }

    for (i = 0; i < length; i++) {
        if (row[i] == noDataValue) {
            row[i] = Float.NaN;
        }
    }
}

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From source file:com.torchmind.authenticator.AbstractTokenGenerator.java

/**
 * Generates a code based on a secret key and challenge.
 *
 * @param secretKey a secret key.//from   w w w. j a v  a  2  s . c  o m
 * @param challenge a challenge.
 * @return a code.
 */
@NonNull
protected String generateCode(@NonNull SecretKey secretKey, @NonNull byte[] challenge) {
    try {
        Mac mac = Mac.getInstance("Hmac" + this.algorithm.name());
        mac.init(secretKey);

        byte[] hash = mac.doFinal(challenge);
        int offset = hash[hash.length - 1] & 0x0F;

        ByteBuffer buffer = ByteBuffer.allocate(4).put(hash, offset, 4);
        buffer.flip();

        return String.format("%0" + this.digits + "d", (buffer.getInt() & 0x7FFFFFFF) % this.digitModulo);
    } catch (NoSuchAlgorithmException ex) {
        throw new UnsupportedOperationException(
                "The specified algorithm is not supported by this Java VM implementation: " + ex.getMessage(),
                ex);
    } catch (InvalidKeyException ex) {
        throw new IllegalArgumentException("Invalid shared secret: " + ex.getMessage(), ex);
    }
}

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From source file:org.cosmo.common.file.VariableFilePartition.java

public void checkIncompleteWrite(File readFile)
        throws FileNotFoundException, IOException, IncompleteWriteException {
    for (int i = 0; i < _readChannels.length; i++) {
        long size = _readChannels[i].size();
        if (size > MetaBytes) { // there is data
            ByteBuffer buf = ByteBuffer.wrap(new byte[4]);
            _readChannels[i].read(buf, _readChannels[i].size() - 4);
            buf.rewind();/*from   ww w .  j av a  2  s.  c o m*/
            int marker = buf.getInt();
            if (marker != StoreCompleteMarker) {
                throw new IncompleteWriteException(New.str("File [", Util.addSuffixToFile(readFile, i),
                        "] did not complete last write operation"));
            }
        }
    }
}

---

From source file:com.github.horrorho.inflatabledonkey.data.blob.BlobA6.java

public BlobA6(ByteBuffer blob) {
    super(blob);/*from w  w  w  .  ja  va 2 s .  co  m*/

    if (type() != 0x000000A6) {
        // Presumed type 0x000000A6, consider throwing exception.
        logger.warn("** RespA6() - unexpected type: 0x{}", Integer.toHexString(type()));
    }

    x = blob.getInt();
    blob.get(tag);
    align(blob);

    list = new BlobLists(blob);
    if (list.size() < 3) {
        throw new IllegalArgumentException("too few blob fields: " + list.size());
    }
}

---

From source file:com.cellngine.crypto.RSACipher.java

private BigInteger[] getKeyData(final byte[] fromBytes) {
    final ByteBuffer buffer = ByteBuffer.wrap(fromBytes);

    final int modulusLength = buffer.getInt();
    final byte[] modulusBuffer = new byte[modulusLength];
    buffer.get(modulusBuffer);/*from   ww w .j av a  2s .c  o m*/
    final BigInteger modulus = new BigInteger(modulusBuffer);

    final int exponentLength = buffer.getInt();
    final byte[] exponentBuffer = new byte[exponentLength];
    buffer.get(exponentBuffer);
    final BigInteger exponent = new BigInteger(exponentBuffer);

    return new BigInteger[] { modulus, exponent };
}

---

From source file:com.tc.simple.apn.factories.FeedbackFactory.java

public List<Feedback> createFeedback(InputStream in) {
    List<Feedback> list = new ArrayList<Feedback>();
    try {//from  w w  w.j a v  a 2s . c  o  m

        byte[] byteMe = IOUtils.toByteArray(in);

        int startRange = 0;

        int endRange = 38; //38 byte chunks per feedback item.

        while (startRange < byteMe.length) {

            //init the value object to hold the feedback data.
            Feedback feedback = new Feedback();

            //build the item based on range
            byte[] item = Arrays.copyOfRange(byteMe, startRange, endRange);//38 byte chunks.

            byte[] date = Arrays.copyOfRange(item, 0, 4);

            byte[] size = Arrays.copyOfRange(item, 4, 6);

            byte[] token = Arrays.copyOfRange(item, 6, item.length);

            ByteBuffer dateWrap = ByteBuffer.wrap(date);

            ByteBuffer javaSize = ByteBuffer.wrap(size);

            //set the date (returns number of seconds from unix epoch date)
            feedback.setDate(new Date(dateWrap.getInt() * 1000L));

            //get the size of the token (should always be 32)
            feedback.setSize(javaSize.getShort());

            //drop in our encoded token (will be used as our key for marking the user's token doc as failed)
            feedback.setToken(String.valueOf(Hex.encodeHex(token)));

            //add it to our collection
            list.add(feedback);

            //increment the start range
            startRange = startRange + 38;

            //increment the end range.
            endRange = endRange + 38;

        }

    } catch (Exception e) {
        logger.log(Level.SEVERE, null, e);

    }

    return list;

}

---

From source file:net.jenet.CommandHeader.java

public void fromBuffer(ByteBuffer buffer) {
    command = buffer.get();//from w  w w . j  av  a2s  .  c o m
    channelID = buffer.get();
    flags = buffer.get();
    reserved = buffer.get();
    commandLength = buffer.getInt();
    reliableSequenceNumber = buffer.getInt();
}

---

From source file:xbird.server.services.RemotePagingService.java

/**
 * @return is closeable?/*from   w w w  . jav a  2  s  . com*/
 */
private void doWrite(final SocketChannel socketChannel, final ByteBuffer cmdBuffer) {
    // receive a command
    cmdBuffer.flip();
    final int cmd = cmdBuffer.getInt();
    switch (cmd) {
    case COMMAND_READ:
        RemoteMemoryMappedFile.sendback(socketChannel, cmdBuffer, _fdCacheMap, _sndBufDTM);
        break;
    case COMMAND_TRACK_READ:
        RemoteVarSegments.sendback(socketChannel, cmdBuffer, _fdCacheMap, _directoryCache, _sndBufSegm);
        break;
    default:
        throw new IllegalStateException("Unknown command: " + cmd);
    }
}

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From source file:edu.umn.cs.spatialHadoop.visualization.FrequencyMap.java

@Override
public void readFields(DataInput in) throws IOException {
    super.readFields(in);
    int length = in.readInt();
    byte[] serializedData = new byte[length];
    in.readFully(serializedData);//w w  w. j a  va 2  s . c  o m
    ByteArrayInputStream bais = new ByteArrayInputStream(serializedData);
    GZIPInputStream gzis = new GZIPInputStream(bais);

    byte[] buffer = new byte[8];
    gzis.read(buffer);
    ByteBuffer bbuffer = ByteBuffer.wrap(buffer);
    int width = bbuffer.getInt();
    int height = bbuffer.getInt();
    // Reallocate memory only if needed
    if (width != this.getWidth() || height != this.getHeight())
        frequencies = new float[width][height];
    buffer = new byte[getHeight() * 4];
    for (int x = 0; x < getWidth(); x++) {
        int size = 0;
        while (size < buffer.length) {
            size += gzis.read(buffer, size, buffer.length - size);
        }
        bbuffer = ByteBuffer.wrap(buffer);
        for (int y = 0; y < getHeight(); y++) {
            frequencies[x][y] = bbuffer.getFloat();
        }
    }
}

---

From source file:com.github.horrorho.inflatabledonkey.data.blob.BlobA0.java

public BlobA0(ByteBuffer blob) {
    super(blob);/*from www .ja  v a 2s .  c  o  m*/

    if (type() != 0x000000A0) {
        // Presumed type 0x000000A0, consider throwing exception.
        logger.warn("** BlobA0() - unexpected type: 0x{}", Integer.toHexString(type()));
    }

    x = blob.getInt();
    iterations = blob.getInt();
    y = blob.getInt();

    list = new BlobLists(blob);
    if (list.size() < 5) {
        throw new IllegalArgumentException("too few blob fields: " + list.size());
    }

    label = new String(list.get(4), UTF_8);

    timestamp = list.size() > 5 ? new String(list.get(5), UTF_8) : "";
}

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