Example usage for java.nio ByteBuffer flip

Introduction

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

Prototype

public final Buffer flip()

Source Link

Document

Flips this buffer.

Usage

From source file:Main.java

/**
 * bytes tp chars/*from www. j av a 2 s.c  o m*/
 * 
 * @param bytes
 * @return
 */
public static char[] getChars(byte[] bytes) {
    Charset cs = Charset.forName("UTF-8");
    ByteBuffer bb = ByteBuffer.allocate(bytes.length);
    bb.put(bytes);
    bb.flip();
    CharBuffer cb = cs.decode(bb);
    return cb.array();
}

From source file:Main.java

/**
 * Converts an array of 4 bytes into a int.
 *
 * @param bytes The bytes./*from  w w  w. ja v a2  s . co  m*/
 * @return The int.
 */
public static int bytesToInt(final byte[] bytes) {
    final ByteBuffer buffer = ByteBuffer.allocate(4);
    buffer.put(bytes, 0, 4);
    buffer.flip();
    return buffer.getInt();
}

From source file:Main.java

/**
 * Converts an array of 8 bytes into a long.
 *
 * @param bytes The bytes./*from   ww  w  .ja va 2 s. c o m*/
 * @return The long.
 */
public static long bytesToLong(final byte[] bytes) {
    final ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.put(bytes, 0, 8);
    buffer.flip();
    return buffer.getLong();
}

From source file:Main.java

public static char[] getChars(byte[] buffer, int offset, int length) {

    ByteBuffer bb = ByteBuffer.allocate(length);
    bb.put(buffer, offset, length);//  w  w  w  .j a  va2 s  .  c  om
    bb.flip();

    return Charset.defaultCharset().decode(bb).array();
}

From source file:Main.java

public static long bytesToLong(byte[] bytes) {
    long l = 0;//from www .j  a v a 2 s .c  o m
    try {
        ByteBuffer buffer = ByteBuffer.allocate(8);
        buffer.put(bytes, 0, bytes.length);
        buffer.flip();//need flip
        l = buffer.getLong();
    } catch (Exception e) {

    }
    return l;
}

From source file:Main.java

public static String processRead(SelectionKey key) throws Exception {
    SocketChannel sChannel = (SocketChannel) key.channel();
    ByteBuffer buffer = ByteBuffer.allocate(1024);
    sChannel.read(buffer);/*from w  ww  .ja v a  2s. c o  m*/
    buffer.flip();
    Charset charset = Charset.forName("UTF-8");
    CharsetDecoder decoder = charset.newDecoder();
    CharBuffer charBuffer = decoder.decode(buffer);
    String msg = charBuffer.toString();
    return msg;
}

From source file:Main.java

public final static ByteBuffer toNALFileFormat(final ByteBuffer buffer) {
    ByteBuffer result = ByteBuffer.allocate(buffer.remaining());
    result.put(buffer);/*  w w w.ja  va  2  s .  co m*/
    result.flip();
    int length = 0;
    int position = -1;
    int remaining = result.remaining() - 3;
    for (int i = 0; i < remaining; ++i) {
        if (result.get(i) == 0x00 && result.get(i + 1) == 0x00 && result.get(i + 2) == 0x00
                && result.get(i + 3) == 0x01) {
            if (0 <= position) {
                result.putInt(position, length - 3);
            }
            position = i;
            length = 0;
        } else {
            ++length;
        }
    }
    result.putInt(position, length);
    return result;
}

From source file:Main.java

public static int bytesToInt(byte[] bytes) {
    ByteBuffer buffer = ByteBuffer.allocate(4);
    reverseArray(bytes);//w w  w .  ja  v  a 2 s . c  om
    buffer.put(bytes, 0, bytes.length);
    buffer.flip();// need flip
    return buffer.getInt();
}

From source file:Main.java

public static ByteBuffer cloneByteBuffer(final ByteBuffer original) {
    // Create clone with same capacity as original.
    final ByteBuffer clone = (original.isDirect()) ? ByteBuffer.allocateDirect(original.capacity())
            : ByteBuffer.allocate(original.capacity());

    // Create a read-only copy of the original.
    // This allows reading from the original without modifying it.
    final ByteBuffer readOnlyCopy = original.asReadOnlyBuffer();

    // Flip and read from the original.
    readOnlyCopy.flip();
    clone.put(readOnlyCopy);/*from  w w w  .j  a  va2 s  .c  o m*/
    clone.position(original.position());
    clone.limit(original.limit());
    clone.order(original.order());
    return clone;
}

From source file:Main.java

public static long bytesToLong(byte[] bytes) {
    ByteBuffer buffer = ByteBuffer.allocate(8);
    reverseArray(bytes);//from   w ww.j a  v  a  2 s  .c  o m
    buffer.put(bytes, 0, bytes.length);
    buffer.flip();// need flip
    return buffer.getLong();
}