org.jitsi.util

Class ArrayIOUtils

java.lang.Object

org.jitsi.util.ArrayIOUtils

public class ArrayIOUtils
extends Object

Implements functionality aiding the reading and writing in little endian of byte arrays and primitive types such as short.

Author:

Lyubomir Marinov

Constructor Summary

Constructors

Constructor and Description
ArrayIOUtils()

Method Summary

Modifier and Type	Method and Description
static int	readInt(byte[] in, int inOffset) Reads an integer from a specific series of bytes starting the reading at a specific offset in it.
static int	readInt16(byte[] in, int inOffset) Reads a short integer from a specific series of bytes starting the reading at a specific offset in it.
static short	readShort(byte[] in, int inOffset) Reads a short integer from a specific series of bytes starting the reading at a specific offset in it.
static void	writeInt(int in, byte[] out, int outOffset) Converts an integer to a series of bytes and writes the result into a specific output array of bytes starting the writing at a specific offset in it.
static void	writeInt16(int in, byte[] out, int outOffset) Converts a short integer to a series of bytes and writes the result into a specific output array of bytes starting the writing at a specific offset in it.
static void	writeShort(short in, byte[] out, int outOffset) Converts a short integer to a series of bytes and writes the result into a specific output array of bytes starting the writing at a specific offset in it.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayIOUtils

public ArrayIOUtils()

Method Detail

readInt

public static int readInt(byte[] in,
                          int inOffset)

Reads an integer from a specific series of bytes starting the reading at a specific offset in it.

Parameters:

in - the series of bytes to read an integer from

inOffset - the offset in in at which the reading of the integer is to start

Returns:

an integer read from the specified series of bytes starting at the specified offset in it

readInt16

public static int readInt16(byte[] in,
                            int inOffset)

Reads a short integer from a specific series of bytes starting the reading at a specific offset in it. The difference with readShort(byte[], int) is that the read short integer is an int which has been formed by reading two bytes, not a short.

Parameters:

in - the series of bytes to read the short integer from

inOffset - the offset in in at which the reading of the short integer is to start

Returns:

a short integer in the form of int read from the specified series of bytes starting at the specified offset in it

readShort

public static short readShort(byte[] in,
                              int inOffset)

Reads a short integer from a specific series of bytes starting the reading at a specific offset in it.

Parameters:

in - the series of bytes to read the short integer from

inOffset - the offset in in at which the reading of the short integer is to start

Returns:

a short integer in the form of short read from the specified series of bytes starting at the specified offset in it

writeInt

public static void writeInt(int in,
                            byte[] out,
                            int outOffset)

Converts an integer to a series of bytes and writes the result into a specific output array of bytes starting the writing at a specific offset in it.

Parameters:

in - the integer to be written out as a series of bytes

out - the output to receive the conversion of the specified integer to a series of bytes

outOffset - the offset in out at which the writing of the result of the conversion is to be started

writeInt16

public static void writeInt16(int in,
                              byte[] out,
                              int outOffset)

Converts a short integer to a series of bytes and writes the result into a specific output array of bytes starting the writing at a specific offset in it. The difference with writeShort(short, byte[], int) is that the input is an int and just two bytes of it are written.

Parameters:

in - the short integer to be written out as a series of bytes specified as an integer i.e. the value to be converted is contained in only two of the four bytes made available by the integer

out - the output to receive the conversion of the specified short integer to a series of bytes

outOffset - the offset in out at which the writing of the result of the conversion is to be started

writeShort

public static void writeShort(short in,
                              byte[] out,
                              int outOffset)

Converts a short integer to a series of bytes and writes the result into a specific output array of bytes starting the writing at a specific offset in it.

Parameters:

in - the short integer to be written out as a series of bytes specified as short

out - the output to receive the conversion of the specified short integer to a series of bytes

outOffset - the offset in out at which the writing of the result of the conversion is to be started