net.java.sip.communicator.impl.neomedia.codec.audio
Class Utils

java.lang.Object
  net.java.sip.communicator.impl.neomedia.codec.audio.Utils

public class Utils
extends Object

Author:

Damian Minkov

Constructor Summary

Utils()

Method Summary

static short[]	byteToShortArray(byte[] byteArray, int offset, int length, boolean little) Converts a byte array into a short array.
static void	shortArrToByteArr(short[] in, byte[] res, boolean little) The result array must be twice as the input one.
static byte[]	shortToBytes(short v, boolean little) Get a pair of bytes representing a short value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Utils

public Utils()

Method Detail

byteToShortArray

public static short[] byteToShortArray(byte[] byteArray,
                                       int offset,
                                       int length,
                                       boolean little)
                                throws ArrayIndexOutOfBoundsException

Converts a byte array into a short array. Since a byte is 8-bits, and a short is 16-bits, the returned short array will be half in length than the byte array. If the length of the byte array is odd, the length of the short array will be (byteArray.length - 1)/2, i.e., the last byte is discarded.

Parameters:

byteArray - a byte array

offset - which byte to start from

length - how many bytes to convert

little - specifies whether the result should be using little endian order or not.

Returns:

a short array, or null if byteArray is of zero length

Throws:

ArrayIndexOutOfBoundsException

shortArrToByteArr

public static void shortArrToByteArr(short[] in,
                                     byte[] res,
                                     boolean little)

The result array must be twice as the input one. Since a byte is 8-bits, and a short is 16-bits.

Parameters:

in - the short[] array that we'll be transforming.

res - the byte[] arrays where we'll be setting the converted short values.

little - specifies whether the result should be using little endian order or not.

shortToBytes

public static byte[] shortToBytes(short v,
                                  boolean little)

Get a pair of bytes representing a short value.

Parameters:

v - the short value to convert.

little - specifies whether the result should be using little endian order or no.

Returns:

a byte[] array containing the result.