org.jitsi.util

Class RTPUtils

java.lang.Object

org.jitsi.util.RTPUtils

Deprecated.

use org.jitsi.rtp.util.RtpUtils (requires Kotlin)

public class RTPUtils
extends Object

RTP-related static utility methods.

Author:

Boris Grozev

Field Summary

Fields

Modifier and Type	Field and Description
static Comparator<? super Integer>	sequenceNumberComparator Deprecated. A Comparator implementation for unsigned 16-bit Integers.

Constructor Summary

Constructors

Constructor and Description
RTPUtils() Deprecated.

Method Summary

Modifier and Type	Method and Description
static int	applySequenceNumberDelta(int startingSequenceNumber, int delta) Deprecated. Apply a delta to a given sequence number and return the result (taking rollover into account)
static int	as16Bits(int value) Deprecated. Returns the given integer masked to 16 bits
static long	as32Bits(long value) Deprecated. Returns the given integer masked to 32 bits
static int	getSequenceNumberDelta(int a, int b) Deprecated. Returns the delta between two RTP sequence numbers, taking into account rollover.
static boolean	isNewerTimestampThan(long a, long b) Deprecated. Returns whether or not the first given timestamp is newer than the second
static boolean	isOlderSequenceNumberThan(int seqNumOne, int seqNumTwo) Deprecated. Returns whether or not seqNumOne is 'older' than seqNumTwo, taking rollover into account
static int	readInt(byte[] buf, int off) Deprecated. Read an integer from a buffer at a specified offset.
static int	readInt16AsInt(byte[] buf, int off) Deprecated. Read a signed short at a specified offset as an int.
static int	readUint16AsInt(byte[] buf, int off) Deprecated. Read an unsigned short at a specified offset as an int.
static int	readUint24AsInt(byte[] buf, int off) Deprecated. Read an unsigned short at specified offset as a int
static long	readUint32AsLong(byte[] buf, int off) Deprecated. Reads a 32-bit unsigned integer from the given buffer at the given offset and returns its long representation.
static long	rtpTimestampDiff(long a, long b) Deprecated. Returns the difference between two RTP timestamps.
static int	subtractNumber(int a, int b) Deprecated. Returns result of the subtraction of one RTP sequence number from another (modulo 2^16).
static String	toHexString(byte[] buf) Deprecated. Return a string containing the hex string version of the given bytes
static String	toHexString(byte[] buf, int off, int len) Deprecated. Return a string containing the hex string version of the given byte
static String	toHexString(byte[] buf, int off, int len, boolean format) Deprecated. Return a string containing the hex string version of the given byte
static int	writeInt(byte[] buf, int off, int data) Deprecated. Set an integer at specified offset in network order.
static int	writeShort(byte[] buf, int off, short data) Deprecated. Set an integer at specified offset in network order.
static int	writeUint24(byte[] buf, int off, int data) Deprecated. Writes the least significant 24 bits from the given integer into the given byte array at the given offset.

Methods inherited from class java.lang.Object

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

Field Detail

sequenceNumberComparator

public static final Comparator<? super Integer> sequenceNumberComparator

Deprecated.

A Comparator implementation for unsigned 16-bit Integers. Compares a and b inside the [0, 2^16] ring; a is considered smaller than b if it takes a smaller number to reach from a to b than the other way round. IMPORTANT: This is a valid Comparator implementation only when used for subsets of [0, 2^16) which don't span more than 2^15 elements. E.g. it works for: [0, 2^15-1] and ([50000, 2^16) u [0, 10000]) Doesn't work for: [0, 2^15] and ([0, 2^15-1] u {2^16-1}) and [0, 2^16)

Constructor Detail

RTPUtils

public RTPUtils()

Deprecated.

Method Detail

getSequenceNumberDelta

public static int getSequenceNumberDelta(int a,
                                         int b)

Deprecated.

Returns the delta between two RTP sequence numbers, taking into account rollover. This will return the 'shortest' delta between the two sequence numbers in the form of the number you'd add to b to get a. e.g.: getSequenceNumberDelta(1, 10) -> -9 (10 + -9 = 1) getSequenceNumberDelta(1, 65530) -> 7 (65530 + 7 = 1)

Returns:

the delta between two RTP sequence numbers (modulo 2^16).

isOlderSequenceNumberThan

public static boolean isOlderSequenceNumberThan(int seqNumOne,
                                                int seqNumTwo)

Deprecated.

Returns whether or not seqNumOne is 'older' than seqNumTwo, taking rollover into account

Parameters:

seqNumOne -

seqNumTwo -

Returns:

true if seqNumOne is 'older' than seqNumTwo

subtractNumber

public static int subtractNumber(int a,
                                 int b)

Deprecated.

Returns result of the subtraction of one RTP sequence number from another (modulo 2^16).

Returns:

result of the subtraction of one RTP sequence number from another (modulo 2^16).

applySequenceNumberDelta

public static int applySequenceNumberDelta(int startingSequenceNumber,
                                           int delta)

Deprecated.

Apply a delta to a given sequence number and return the result (taking rollover into account)

Parameters:

startingSequenceNumber - the starting sequence number

delta - the delta to be applied

Returns:

the sequence number result from doing startingSequenceNumber + delta

writeInt

public static int writeInt(byte[] buf,
                           int off,
                           int data)

Deprecated.

Set an integer at specified offset in network order.

Parameters:

off - Offset into the buffer

data - The integer to store in the packet

writeUint24

public static int writeUint24(byte[] buf,
                              int off,
                              int data)

Deprecated.

Writes the least significant 24 bits from the given integer into the given byte array at the given offset.

Parameters:

buf - the buffer into which to write.

off - the offset at which to write.

data - the integer to write.

Returns:

3

writeShort

public static int writeShort(byte[] buf,
                             int off,
                             short data)

Deprecated.

Set an integer at specified offset in network order.

Parameters:

off - Offset into the buffer

data - The integer to store in the packet

readInt

public static int readInt(byte[] buf,
                          int off)

Deprecated.

Read an integer from a buffer at a specified offset.

Parameters:

buf - the buffer.

off - start offset of the integer to be read.

readUint32AsLong

public static long readUint32AsLong(byte[] buf,
                                    int off)

Deprecated.

Reads a 32-bit unsigned integer from the given buffer at the given offset and returns its long representation.

Parameters:

buf - the buffer.

off - start offset of the integer to be read.

readUint16AsInt

public static int readUint16AsInt(byte[] buf,
                                  int off)

Deprecated.

Read an unsigned short at a specified offset as an int.

Parameters:

buf - the buffer from which to read.

off - start offset of the unsigned short

Returns:

the int value of the unsigned short at offset

readInt16AsInt

public static int readInt16AsInt(byte[] buf,
                                 int off)

Deprecated.

Read a signed short at a specified offset as an int.

Parameters:

buf - the buffer from which to read.

off - start offset of the unsigned short

Returns:

the int value of the unsigned short at offset

readUint24AsInt

public static int readUint24AsInt(byte[] buf,
                                  int off)

Deprecated.

Read an unsigned short at specified offset as a int

Parameters:

buf -

off - start offset of the unsigned short

Returns:

the int value of the unsigned short at offset

as16Bits

public static int as16Bits(int value)

Deprecated.

Returns the given integer masked to 16 bits

Parameters:

value - the integer to mask

Returns:

the value, masked to only keep the lower 16 bits

as32Bits

public static long as32Bits(long value)

Deprecated.

Returns the given integer masked to 32 bits

Parameters:

value - the integer to mask

Returns:

the value, masked to only keep the lower 32 bits

rtpTimestampDiff

public static long rtpTimestampDiff(long a,
                                    long b)

Deprecated.

Returns the difference between two RTP timestamps.

Returns:

the difference between two RTP timestamps.

isNewerTimestampThan

public static boolean isNewerTimestampThan(long a,
                                           long b)

Deprecated.

Returns whether or not the first given timestamp is newer than the second

Parameters:

a -

b -

Returns:

true if a is newer than b, false otherwise

toHexString

public static String toHexString(byte[] buf)

Deprecated.

Return a string containing the hex string version of the given bytes

Parameters:

buf -

Returns:

toHexString

public static String toHexString(byte[] buf,
                                 int off,
                                 int len)

Deprecated.

Return a string containing the hex string version of the given byte

Parameters:

buf -

off -

len -

Returns:

toHexString

public static String toHexString(byte[] buf,
                                 int off,
                                 int len,
                                 boolean format)

Deprecated.

Return a string containing the hex string version of the given byte

Parameters:

buf -

off -

len -

format - a boolean that indicates whether or not to format the hex string.

Returns: