Package 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 Details

    • 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)

    • AMFPacket

      public AMFPacket(int type, int src, byte[] data)
      Create new packet with given values
      Parameters:
      type - packet content type: IVHost.CONTENTTYPE_*
      src - stream id
      data - data buffer

  • Method Details

    • clone

      public AMFPacket clone()
      Overrides:
      clone in class Object

    • clone

      public AMFPacket clone(boolean doCopy)

    • getSize

      public int getSize()
      Get packet size
      Returns:
      packet size

    • setSize

      public void setSize(int size)
      Set packet size
      Parameters:
      size - packet size

    • truncatePacket

      public void truncatePacket(int newSize)

    • getMissing

      public int getMissing()
      Get the number of bytes remaining unfilled in the packet
      Returns:
      number of bytes unfilled in packet

    • setDataBuffer

      public void setDataBuffer(ByteBuffer data)
      Set the data for this packet
      Parameters:
      data - byte buffer that holds packet data

    • setDataBuffer

      public void setDataBuffer(byte[] data)
      Set the data buffer to a byte array
      Parameters:
      data - data buffer byte array

    • 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

    • getType

      public int getType()
      Get content type IVHost.CONTENTTYPE_*
      Returns:
      content type

    • setType

      public void setType(int type)
      Set content type IVHost.CONTENTTYPE_*
      Parameters:
      type - content type

    • getSrc

      public int getSrc()
      Get stream id (0 if not stream data)
      Returns:
      stream id

    • setSrc

      public void setSrc(int src)
      Set stream id (0 if not stream data)
      Parameters:
      src - stream id

    • toString

      public String toString()
      Return object as formatted string
      Overrides:
      toString in class Object

    • getTimecode

      public long getTimecode()
      Get timecode (milliseconds) relative to the previous packet.
      Returns:
      timecode (milliseconds)

    • setTimecodes

      public void setTimecodes(long timecode, long absTimecode)
      Set both relative and absolute timecode in one call (milliseconds)

      Note this time is relative to the previous packet.

      Parameters:
      timecode - relative timecode (milliseconds)
      absTimecode - absolute timecode (milliseconds)

    • setTimecode

      public void setTimecode(long timecode)
      Set timecode (milliseconds) relative,

      Note this time is relative to the previous packet.

      Parameters:
      timecode - timecode (milliseconds)

    • getAbsTimecode

      public long getAbsTimecode()
      Get absolute timecode (milliseconds)
      Returns:
      absolute timecode

    • setAbsTimecode

      public void setAbsTimecode(long absTimecode)
      Set absolute timecode (milliseconds)
      Parameters:
      absTimecode - absolute timecode

    • getSeq

      public long getSeq()
      Get packet sequence number. Used for live streams to keep track of packet ordering.
      Returns:
      packet sequence

    • setSeq

      public void setSeq(long seq)
      Set packet sequence. Used for live streams to keep track of packet ordering.
      Parameters:
      seq - packet sequence

    • 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

    • getDataBuffer

      public ByteBuffer getDataBuffer()
      Get data as ByteBuffer
      Returns:
      data as ByteBuffer

    • getData

      public byte[] getData()
      Get data as byte[]
      Returns:
      data as byte[] null if no data

    • getFirstByte

      public int getFirstByte()
      Get first byte of data (used to peek into packet)
      Returns:
      first byte of data in packet

    • getSecondByte

      public int getSecondByte()
      Get second byte of data (used to peek into packet)
      Returns:
      second byte of data 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

    • 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

    • serializePacket

      public byte[] serializePacket()

    • deserializePacket

      public static AMFPacket deserializePacket(byte[] buffer)

    • getLock

      public Object getLock()
      Get lock (mostly used for extra data access)
      Returns:
      lock

    • putExtraData

      public IAMFPacketExtraData putExtraData(String key, IAMFPacketExtraData value)
      Add extra data value
      Parameters:
      key - key
      value - extra data
      Returns:
      extra data currently at that key

    • putAllExtraData

      public void putAllExtraData(Map<String,IAMFPacketExtraData> entries)
      Add extra data key value pairs
      Parameters:
      entries - extra data key value pairs

    • getExtraData

      public IAMFPacketExtraData getExtraData(String key)
      Get extra data value
      Parameters:
      key - key
      Returns:
      extra data value

    • getExtraDataKeys

      public Set<String> getExtraDataKeys()
      Get a set of the extra data keys
      Returns:
      extra data keys

    • containsExtraDataKey

      public boolean containsExtraDataKey(String key)
      Return true if extra data contains the key
      Parameters:
      key - key
      Returns:
      true if extra data contains the key

    • isExtraData

      public boolean isExtraData()
      Returns true if this packet contains any extra data
      Returns:
      true if this packet contains any extra data

    • extraDataClone

      public static Map<String,IAMFPacketExtraData> extraDataClone(Map<String,IAMFPacketExtraData> extraData)

    • extraDataClone

      public Map<String,IAMFPacketExtraData> extraDataClone()
      Deep copy the extra data and return as a Map
      Returns:
      deep copy of extra data

    • prettyPrint

      public String prettyPrint()