Java Utililty Methods ByteBuffer Endian

List of utility methods to do ByteBuffer Endian

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Description

The list of methods to do ByteBuffer Endian are organized into topic(s).

Method

voidassertByteOrderLittleEndian(ByteBuffer buffer)
assert Byte Order Little Endian 
if (buffer.order() != ByteOrder.LITTLE_ENDIAN) {
    throw new IllegalArgumentException("ByteBuffer byte order must be little endian");
longconvertLittleEndianLong(ByteBuffer buff, int size)
convert Little Endian Long 
if (size <= 0 || size > LONG_SIZE) {
    throw new IllegalArgumentException("size MUST be less 8.");
byte[] array = new byte[size];
buff.get(array);
ByteBuffer bbf = ByteBuffer.allocate(LONG_SIZE);
bbf.put(array);
bbf.order(ByteOrder.LITTLE_ENDIAN);
...
longdecodeLittleEndianFixedWidthLong(ByteBuffer buffer)
decode Little Endian Fixed Width Long 
return decodeLittleEndianFixedWidthLong(buffer.array(), buffer.arrayOffset() + buffer.position(),
        buffer.remaining());
intdecodeLittleEndianVarInt(ByteBuffer buffer)
decode Little Endian Var Int 
byte b = buffer.get();
int result = b & 0x7f;
if ((b & 0x80) > 0) {
    b = buffer.get();
    result |= ((b & 0x7f) << 7);
    if ((b & 0x80) > 0) {
        b = buffer.get();
        result |= ((b & 0x7f) << 14);
...
byte[]extractInt(ByteBuffer header_buf, boolean bigEndian)
extract Int 
byte b1, b2, b3, b4;
b1 = header_buf.get();
b2 = header_buf.get();
b3 = header_buf.get();
b4 = header_buf.get();
byte[] result = new byte[4];
if (bigEndian) {
    result[0] = b1;
...
byte[]extractShort(ByteBuffer buffer, boolean bigEndian)
extract Short 
byte b1, b2;
byte[] result = new byte[2];
b1 = buffer.get();
b2 = buffer.get();
if (bigEndian) {
    result[0] = b1;
    result[1] = b2;
} else {
...
ByteBufferinLittleEndianOrder(ByteBuffer buf)
in Little Endian Order 
if (buf.order().equals(ByteOrder.LITTLE_ENDIAN)) {
    return buf;
} else {
    return buf.duplicate().order(ByteOrder.LITTLE_ENDIAN);
voidswapEndian16(ByteBuffer buf)
swap Endian 
int elems = buf.remaining() / 2;
for (int n = 0, t = buf.position(); n < elems; n++, t += 2) {
    short s = buf.getShort(t);
    s = (short) ((s << 8) | (s >>> 8));
    buf.putShort(t, s);