Example usage for java.nio ByteBuffer wrap

List of usage examples for java.nio ByteBuffer wrap

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Introduction

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

Prototype

public static ByteBuffer wrap(byte[] array)

Source Link

Document

Creates a new byte buffer by wrapping the given byte array.

Usage

From source file:Main.java

/** create AdvertiseDate for iBeacon */
public static AdvertiseData createLightOnAdvertiseData() {
    byte[] manufacturerData = new byte[23];
    ByteBuffer bb = ByteBuffer.wrap(manufacturerData);
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.put((byte) 0x4c);
    bb.put((byte) 0x69);
    bb.put((byte) 0x67);
    bb.put((byte) 0x68);
    bb.put((byte) 0x74);
    bb.put((byte) 0x4f);
    bb.put((byte) 0x6e);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);
    bb.put((byte) 0x00);

    AdvertiseData.Builder builder = new AdvertiseData.Builder();
    builder.addManufacturerData(0x006d, manufacturerData);
    AdvertiseData adv = builder.build();
    return adv;// w  ww.j a  v  a  2s  .c om
}

From source file:info.gehrels.flockDBClient.ByteHelper.java

static ByteBuffer asByteBufferOrNull(long... destinationIds) {
    ByteBuffer buf = null;// ww  w .  j  a v a2s  .c  om
    if (isNotEmpty(destinationIds)) {
        buf = ByteBuffer.wrap(new byte[destinationIds.length * (Long.SIZE / 8)]);
        buf.order(ByteOrder.LITTLE_ENDIAN);
        for (long destinationId : destinationIds) {
            buf.putLong(destinationId);
        }
        buf.rewind();
    }
    return buf;
}

From source file:com.google.step2.util.EncodingUtil.java

public static String getUtf8String(byte[] data) {
    return UTF8.decode(ByteBuffer.wrap(data)).toString();
}

From source file:com.scf.utils.UUIDUtilies.java

protected static String base64Uuid(UUID uuid) {

    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());

    return Base64.encodeBase64URLSafeString(bb.array());
}

From source file:Main.java

static ByteBuffer createMsg(int state, long leader, long zxid, long epoch) {
    byte requestBytes[] = new byte[28];
    ByteBuffer requestBuffer = ByteBuffer.wrap(requestBytes);

    /*//  w w w.  j av a  2 s.  co m
     * Building notification packet to send
     */

    requestBuffer.clear();
    requestBuffer.putInt(state);
    requestBuffer.putLong(leader);
    requestBuffer.putLong(zxid);
    requestBuffer.putLong(epoch);

    return requestBuffer;
}

From source file:Main.java

public static ByteBuffer copyBinary(final ByteBuffer orig) {
    if (orig == null) {
        return null;
    }/*from  w  w  w.jav a 2 s . c  om*/
    ByteBuffer copy = ByteBuffer.wrap(new byte[orig.remaining()]);
    if (orig.hasArray()) {
        System.arraycopy(orig.array(), orig.arrayOffset() + orig.position(), copy.array(), 0, orig.remaining());
    } else {
        orig.slice().get(copy.array());
    }

    return copy;
}

From source file:Main.java

/**
 * Convert the given byte array to 'long'
 * //w  ww .ja  v  a2s  .co m
 * @param b
 *            An 8-byte array
 * @return long value of the array contents
 */
public static long convertByteArrayToLong(byte[] b) {
    int capacity = Long.SIZE / EIGHT;
    if (b.length > capacity) {
        return -1;
    }
    return ByteBuffer.wrap(b).getLong();
}

From source file:Main.java

private static String getBytesAsString(byte[] bytes) {
    if (bytes == null)
        return "null";
    try {/* ww w . java2  s . c  o  m*/
        CharsetDecoder d = Charset.forName("US-ASCII").newDecoder();
        CharBuffer r = d.decode(ByteBuffer.wrap(bytes));
        return r.toString();
    } catch (Exception e) {
        return Base64.encodeToString(bytes, Base64.NO_WRAP);
    }
}

From source file:Main.java

public static byte[] getBytePixels(final Bitmap bit) {
    if (bit == null) {
        return null;
    }//  www  .  j a  v  a  2s  .co m
    final byte[] pixels = new byte[bit.getWidth() * bit.getHeight() * 4];
    final ByteBuffer buf = ByteBuffer.wrap(pixels);
    buf.order(ByteOrder.nativeOrder());
    bit.copyPixelsToBuffer(buf);
    return pixels;
}

From source file:Main.java

/**
 * Convert the given byte array to 'int'
 * /*from   ww  w  .j av  a  2 s.  c o  m*/
 * @param b
 *            A 4-byte array
 * 
 * @return int value of the array contents
 */
public static int convertBigEndianByteArrayToInt(byte[] b) {
    int capacity = Integer.SIZE / EIGHT;
    if (b.length > capacity) {
        return -1;
    }
    return ByteBuffer.wrap(b).getInt();
}