Example usage for java.nio ByteBuffer array

Introduction

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

Prototype

public final byte[] array()

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:Main.java

public static String readTxtFromFile(File file) throws Exception {
    ByteBuffer buffer = ByteBuffer.allocate((int) file.length());
    FileInputStream in = new FileInputStream(file);
    in.getChannel().read(buffer);/*from w w  w. j a  v  a  2s  .  c  o  m*/
    in.close();
    return new String(buffer.array());
}

From source file:com.liveramp.cascading_ext.Bytes.java

/**
 * If the given ByteBuffer wraps completely its underlying byte array, return the underlying
 * byte array (no copy). Otherwise, return a deep copy of the range represented by the given
 * ByteBuffer.//ww  w  .  ja v  a  2 s  .  co m
 *
 * @param byteBuffer
 */
public static byte[] byteBufferToByteArray(ByteBuffer byteBuffer) {
    if (wrapsFullArray(byteBuffer)) {
        return byteBuffer.array();
    }
    byte[] target = new byte[byteBuffer.remaining()];
    byteBufferToByteArray(byteBuffer, target, 0);
    return target;
}

From source file:Main.java

public final static int count(final ByteBuffer bb1, final ByteBuffer bb2) {
    final int end1 = bb1.limit();
    final int end2 = bb2.limit();
    final byte[] array1 = bb1.array();
    final byte[] array2 = bb2.array();
    return count(array1, 0, end1, array2, 0, end2);
}

From source file:Main.java

/**
 * Convert from singed 16-bit PCM to 32-bit float PCM.
 * @param byteArray byte array/* w  w w .  jav a2s  .c o m*/
 * @return byte array
 */
public static byte[] convert16BitTo32Bit(final byte[] byteArray) {
    float[] audioDataF = shortToFloat(byteToShort(byteArray));
    for (int i = 0; i < audioDataF.length; i++) {
        audioDataF[i] /= 32768.0;
    }

    FloatBuffer fb = FloatBuffer.wrap(audioDataF);
    ByteBuffer byteBuffer = ByteBuffer.allocate(fb.capacity() * 4);
    byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
    byteBuffer.asFloatBuffer().put(fb);
    return byteBuffer.array();
}

From source file:com.bconomy.autobit.Encryption.java

private static byte[] charsToBytes(char[] chars) {
    CharBuffer charBuffer = CharBuffer.wrap(chars);
    ByteBuffer byteBuffer = Charset.forName("UTF-8").encode(charBuffer);
    byte[] bytes = Arrays.copyOfRange(byteBuffer.array(), byteBuffer.position(), byteBuffer.limit());
    Arrays.fill(charBuffer.array(), '\u0000'); // clear sensitive data
    Arrays.fill(byteBuffer.array(), (byte) 0); // clear sensitive data
    Arrays.fill(chars, '\u0000'); // clear sensitive data
    return bytes;
}

From source file:Main.java

public static byte[] uuidToBytes(String uuidStr) {
    UUID uuid = stringToUuid(uuidStr);

    ByteBuffer bb = ByteBuffer.allocate(16);
    bb.order(ByteOrder.LITTLE_ENDIAN);
    bb.putLong(uuid.getLeastSignificantBits());
    bb.putLong(uuid.getMostSignificantBits());
    return bb.array();
}

From source file:com.hengyi.japp.tools.UuidUtils.java

protected static String base58Uuid(UUID uuid) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return Base58.encode(bb.array());
}

From source file:io.datenwelt.cargo.rest.utils.Strings.java

public static String token() {
    ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES * 100);
    for (int i = 0; i < 100; i++) {
        buffer.putLong(random.nextLong());
    }/*from  ww  w  .  j av a 2 s.c  om*/
    return DigestUtils.md5Hex(buffer.array());
}

From source file:Main.java

public static final int indexOfP(final ByteBuffer lineBB, final byte[][] textsLower,
        final byte[][] textsUpper) {
    return indexOf(lineBB.array(), lineBB.position(), lineBB.limit(), textsLower, textsUpper);
}

From source file:Main.java

public static List<ByteBuffer> mergeAdjacentBuffers(List<ByteBuffer> samples) {
    ArrayList<ByteBuffer> nuSamples = new ArrayList<ByteBuffer>(samples.size());
    for (ByteBuffer buffer : samples) {
        int lastIndex = nuSamples.size() - 1;
        if (lastIndex >= 0 && buffer.hasArray() && nuSamples.get(lastIndex).hasArray()
                && buffer.array() == nuSamples.get(lastIndex).array() && nuSamples.get(lastIndex).arrayOffset()
                        + nuSamples.get(lastIndex).limit() == buffer.arrayOffset()) {
            ByteBuffer oldBuffer = nuSamples.remove(lastIndex);
            ByteBuffer nu = ByteBuffer
                    .wrap(buffer.array(), oldBuffer.arrayOffset(), oldBuffer.limit() + buffer.limit()).slice();
            // We need to slice here since wrap([], offset, length) just sets position and not the arrayOffset.
            nuSamples.add(nu);//from  w w  w. ja v  a 2 s  .c  o m
        } else if (lastIndex >= 0 && buffer instanceof MappedByteBuffer
                && nuSamples.get(lastIndex) instanceof MappedByteBuffer && nuSamples.get(lastIndex)
                        .limit() == nuSamples.get(lastIndex).capacity() - buffer.capacity()) {
            // This can go wrong - but will it?
            ByteBuffer oldBuffer = nuSamples.get(lastIndex);
            oldBuffer.limit(buffer.limit() + oldBuffer.limit());
        } else {
            buffer.reset();
            nuSamples.add(buffer);
        }
    }
    return nuSamples;
}