com.wowza.wms.amf
Class AMFPacket

Object
  com.wowza.wms.amf.AMFPacket

public class AMFPacket
extends Object

AMFPacket: data container for data being transferred to and from the server from the Flash client. AMFPacket is also used to store data read/written to/from an flv file.

Constructor Summary

AMFPacket()
Create new empty packet

AMFPacket(int type, int src, int size)
Create new packet with given values

Method Summary

int	addData(byte[] data, int offset, int size) Add data to the packet
int	addDataEx(byte[] srcData, int srcOffset, int destOffset, int srcBytes) Add data to the packet
static int	calcTotalPacketSize(int packetSize, int headerSize, int chunkSize, int amfNumber, boolean isLongTimecode) Calculate the total packet size for given packet parameters
AMFPacket	clone()
long	getAbsTimecode() Get absolute timecode (milliseconds)
byte[]	getData() Get data as byte[]
java.nio.ByteBuffer	getDataBuffer() Get data as ByteBuffer
int	getFirstByte() Get first byte of data (used to peek into packet)
int	getMissing() Get the number of bytes remaining unfilled in the packet
int	getSecondByte() Get second byte of data (used to peek into packet)
long	getSeq() Get packet sequence number.
int	getSize() Get packet size
int	getSrc() Get stream id (0 if not stream data)
long	getTimecode() Get timecode (milliseconds) relative
int	getType() Get content type IVHost.CONTENTTYPE_*
boolean	isAudio() Is this an audio packet IVHost.CONTENTTYPE_AUDIO
boolean	isVideo() Is this an audio packet IVHost.CONTENTTYPE_VIDEO
void	setAbsTimecode(long absTimecode) Set absolute timecode (milliseconds)
void	setDataBuffer(byte[] data) Set the data buffer to a byte array
void	setDataBuffer(java.nio.ByteBuffer data) Set the data for this packet
void	setSeq(long seq) Set packet sequence.
void	setSize(int size) Set packet size
void	setSrc(int src) Set stream id (0 if not stream data)
void	setTimecode(long timecode) Set timecode (milliseconds) relative
void	setTimecodes(long timecode, long absTimecode) Set both relative and absolute timecode in one call (milliseconds)
void	setType(int type) Set content type IVHost.CONTENTTYPE_*
String	toString() Return object as formatted string
void	truncatePacket(int newSize)

Methods inherited from class Object

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

Constructor Detail

AMFPacket

public AMFPacket()

Create new empty packet

AMFPacket

public AMFPacket(int type,
                 int src,
                 int size)

Create new packet with given values

Parameters:

type - packet content type: IVHost.CONTENTTYPE_*

src - stream id

size - packet size (bytes)

Method Detail

addData

public int addData(byte[] data,
                   int offset,
                   int size)

Add data to the packet

Parameters:

data - byte buffer with data

offset - offset in byte buffer

size - size of data

Returns:

number of bytes unfilled in packet

addDataEx

public int addDataEx(byte[] srcData,
                     int srcOffset,
                     int destOffset,
                     int srcBytes)

Add data to the packet

Parameters:

srcData - - source byte buffer with data

srcOffset - - start copying from source buffer at this offset

destOffset - - copy into destination buffer from this offset

srcBytes - - size of data to copy

Returns:

number of bytes unfilled in packet

calcTotalPacketSize

public static int calcTotalPacketSize(int packetSize,
                                      int headerSize,
                                      int chunkSize,
                                      int amfNumber,
                                      boolean isLongTimecode)

Calculate the total packet size for given packet parameters

Parameters:

packetSize - data size

headerSize - header size

chunkSize - chunk size

amfNumber - amf number

isLongTimecode - is long timecode

Returns:

total bytes

clone

public AMFPacket clone()

Overrides:

clone in class Object

getAbsTimecode

public long getAbsTimecode()

Get absolute timecode (milliseconds)

Returns:

absolute timecode

getData

public byte[] getData()

Get data as byte[]

Returns:

data as byte[] null if no data

getDataBuffer

public java.nio.ByteBuffer getDataBuffer()

Get data as ByteBuffer

Returns:

data as ByteBuffer

getFirstByte

public int getFirstByte()

Get first byte of data (used to peek into packet)

Returns:

first byte of data in packet

getMissing

public int getMissing()

Get the number of bytes remaining unfilled in the packet

Returns:

number of bytes unfilled in packet

getSecondByte

public int getSecondByte()

Get second byte of data (used to peek into packet)

Returns:

second byte of data in packet

getSeq

public long getSeq()

Get packet sequence number. Used for live streams to keep track of packet ordering.

Returns:

packet sequence

getSize

public int getSize()

Get packet size

Returns:

packet size

getSrc

public int getSrc()

Get stream id (0 if not stream data)

Returns:

stream id

getTimecode

public long getTimecode()

Get timecode (milliseconds) relative

Returns:

timecode (milliseconds)

getType

public int getType()

Get content type IVHost.CONTENTTYPE_*

Returns:

content type

isAudio

public boolean isAudio()

Is this an audio packet IVHost.CONTENTTYPE_AUDIO

Returns:

true if audio packet

isVideo

public boolean isVideo()

Is this an audio packet IVHost.CONTENTTYPE_VIDEO

Returns:

true if video packet

setAbsTimecode

public void setAbsTimecode(long absTimecode)

Set absolute timecode (milliseconds)

Parameters:

absTimecode - absolute timecode

setDataBuffer

public void setDataBuffer(byte[] data)

Set the data buffer to a byte array

Parameters:

data - data buffer byte array

setDataBuffer

public void setDataBuffer(java.nio.ByteBuffer data)

Set the data for this packet

Parameters:

data - byte buffer that holds packet data

setSeq

public void setSeq(long seq)

Set packet sequence. Used for live streams to keep track of packet ordering.

Parameters:

seq - packet sequence

setSize

public void setSize(int size)

Set packet size

Parameters:

size - packet size

setSrc

public void setSrc(int src)

Set stream id (0 if not stream data)

Parameters:

src - stream id

setTimecode

public void setTimecode(long timecode)

Set timecode (milliseconds) relative

Parameters:

timecode - timecode (milliseconds)

setTimecodes

public void setTimecodes(long timecode,
                         long absTimecode)

Set both relative and absolute timecode in one call (milliseconds)

Parameters:

timecode - relative timecode (milliseconds)

absTimecode - absolute timecode (milliseconds)

setType

public void setType(int type)

Set content type IVHost.CONTENTTYPE_*

Parameters:

type - content type

toString

public String toString()

Return object as formatted string

Overrides:

toString in class Object

truncatePacket

public void truncatePacket(int newSize)