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 long	getUnsignedNumber(ByteBuffer buffer, boolean is64bits)	Gets an unsigned 32-bit integer or 64-bit long from the given buffer depending on the is64bits parameter.
static int	getUnsignedShort(ByteBuffer buffer)
static boolean	isBitOfByteSet(Byte input, int bitnr)
static byte[]	longToBytesFixed(long input, int length)
static byte[]	longToTrimmedBytes(long input)
static void	writeUnsignedByte(ByteBuffer buffer, int input)
static void	writeUnsignedInt(ByteBuffer buffer, long input)	Write the given long as an unsigned int (32bits) to the given buffer at its current position
static void	writeUnsignedLong(ByteBuffer buffer, long input)	Write the given long as an unsigned long (64bits) to the given buffer at its current position
static void	writeUnsignedNumber(ByteBuffer buffer, long input, boolean is64bits)	Writes the given long as either unsigned 32-bit integer or unsigned 64-bit long depending on the is64bits parameter.

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

getUnsignedNumber

public static long getUnsignedNumber(ByteBuffer buffer,
 boolean is64bits)

Gets an unsigned 32-bit integer or 64-bit long from the given buffer depending on the is64bits parameter. Useful for FSS (File-Size Sensitive) data type

writeUnsignedInt

public static void writeUnsignedInt(ByteBuffer buffer,
 long input)

Write the given long as an unsigned int (32bits) to the given buffer at its current position

writeUnsignedLong

public static void writeUnsignedLong(ByteBuffer buffer,
 long input)

Write the given long as an unsigned long (64bits) to the given buffer at its current position

writeUnsignedNumber

public static void writeUnsignedNumber(ByteBuffer buffer,
 long input,
 boolean is64bits)

Writes the given long as either unsigned 32-bit integer or unsigned 64-bit long depending on the is64bits parameter. Useful for FSS (File-Size Sensitive) data type

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)

longToBytesFixed

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

longToTrimmedBytes

public static byte[] longToTrimmedBytes(long input)