Module org.yamcs.core

Package org.yamcs.cfdp

Class CfdpUtils

java.lang.Object

org.yamcs.cfdp.CfdpUtils

public class CfdpUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
CfdpUtils()

Method Summary

Modifier and Type	Method	Description
static byte	boolToByte(boolean bool, int bitnr)	if bool is true, write bit 1 on bitnr position
static int	getBitOfByte(Byte input, int bitnr)
static short	getUnsignedByte(ByteBuffer buffer)
static long	getUnsignedInt(ByteBuffer buffer)	get an unsigned int value from an input buffer, at its current position A short has range -2ˆ31+1 to 2ˆ31-1, while we want 0 to 2ˆ32-1, the mask and int cast takes care of this
static Long	getUnsignedLongFromBuffer(ByteBuffer buffer, int nrOfBytesToRead)
static long	getUnsignedLongFromByteArray(byte[] input)
static int	getUnsignedShort(ByteBuffer buffer)
static boolean	isBitOfByteSet(Byte input, int bitnr)
static byte[]	longToBytes(long input, int length)
static void	writeUnsignedByte(ByteBuffer buffer, int input)
static void	writeUnsignedInt(ByteBuffer buffer, long input)	Write the given long as an unsigned int to the given buffer at its current position

Methods inherited from class java.lang.Object

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

Constructor Details

CfdpUtils

public CfdpUtils()

Method Details

isBitOfByteSet

public static boolean isBitOfByteSet(Byte input,
 int bitnr)

getBitOfByte

public static int getBitOfByte(Byte input,
 int bitnr)

getUnsignedByte

public static short getUnsignedByte(ByteBuffer buffer)

writeUnsignedByte

public static void writeUnsignedByte(ByteBuffer buffer,
 int input)

getUnsignedShort

public static int getUnsignedShort(ByteBuffer buffer)

getUnsignedInt

public static long getUnsignedInt(ByteBuffer buffer)

get an unsigned int value from an input buffer, at its current position A short has range -2ˆ31+1 to 2ˆ31-1, while we want 0 to 2ˆ32-1, the mask and int cast takes care of this

writeUnsignedInt

public static void writeUnsignedInt(ByteBuffer buffer,
 long input)

Write the given long as an unsigned int to the given buffer at its current position

getUnsignedLongFromBuffer

public static Long getUnsignedLongFromBuffer(ByteBuffer buffer,
 int nrOfBytesToRead)

boolToByte

public static byte boolToByte(boolean bool,
 int bitnr)

if bool is true, write bit 1 on bitnr position

getUnsignedLongFromByteArray

public static long getUnsignedLongFromByteArray(byte[] input)

longToBytes

public static byte[] longToBytes(long input,
 int length)