edu.umd.cfar.lamp.mpeg1.video
Class GroupOfPicturesIndex

java.lang.Object
  edu.umd.cfar.lamp.mpeg1.video.GroupOfPicturesIndex

public class GroupOfPicturesIndex

extends java.lang.Object

Indexes within a Group of Pictures.

Constructor Summary

GroupOfPicturesIndex()

Method Summary

void	addPicture(long startPosition, long dataSize, byte type, int displayOrder) Adds a GroupOfPicturesIndexElement, which represents one picture (frame) in the Group of Pictures, to the index.
java.util.Vector	getElementsInCodingOrder()
java.util.Vector	getElementsInDisplayOrder()
int	getLastIOrPPicture()
int	getLastIOrPPicture(int n)
long	getPositionOfPicture(int n)
long	getPositionOfPictureInCodingOrder(int n)
byte	getTypeOfPicture(int n)
byte	getTypeOfPictureInCodingOrder(int n) Returns the type of the (0-based) frame in coding order.
int	mapCodingOrderToDisplayOrder(int codingOrder) Maps a (0-based) frame in coding order to a (0-based) frame in display order.
int	mapDisplayOrderToCodingOrder(int displayOrder) Maps a (0-based) frame in dislay order to a (0-based) frame in coding order.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupOfPicturesIndex

public GroupOfPicturesIndex()

Method Detail

addPicture

public void addPicture(long startPosition,
                       long dataSize,
                       byte type,
                       int displayOrder)

Adds a GroupOfPicturesIndexElement, which represents one picture (frame) in the Group of Pictures, to the index.

Parameters:

startPosition - the start position

dataSize - the data length

type -

displayOrder -

getPositionOfPicture

public long getPositionOfPicture(int n)
                          throws FrameNotFoundException

Parameters:

n - the frame

Returns:

the byte position (in the video stream) of the (zero-based) nth picture (frame) in this Group Of Pictures (in display order).

Throws:

FrameNotFoundException

getLastIOrPPicture

public int getLastIOrPPicture(int n)
                       throws FrameNotFoundException

Throws:

FrameNotFoundException

getLastIOrPPicture

public int getLastIOrPPicture()
                       throws FrameNotFoundException

Throws:

FrameNotFoundException

getPositionOfPictureInCodingOrder

public long getPositionOfPictureInCodingOrder(int n)
                                       throws FrameNotFoundException

Throws:

FrameNotFoundException

getElementsInDisplayOrder

public java.util.Vector getElementsInDisplayOrder()

Returns:

a Vector of GroupOfPicturesIndexElements in display order.

getElementsInCodingOrder

public java.util.Vector getElementsInCodingOrder()

Returns:

a Vector of GroupOfPicturesIndexElements in coding order.

mapDisplayOrderToCodingOrder

public int mapDisplayOrderToCodingOrder(int displayOrder)
                                 throws FrameNotFoundException

Maps a (0-based) frame in dislay order to a (0-based) frame in coding order.

Parameters:

displayOrder -

Returns:

Throws:

FrameNotFoundException

mapCodingOrderToDisplayOrder

public int mapCodingOrderToDisplayOrder(int codingOrder)
                                 throws FrameNotFoundException

Maps a (0-based) frame in coding order to a (0-based) frame in display order.

Parameters:

codingOrder -

Returns:

Throws:

FrameNotFoundException

getTypeOfPictureInCodingOrder

public byte getTypeOfPictureInCodingOrder(int n)
                                   throws FrameNotFoundException

Returns the type of the (0-based) frame in coding order.

Parameters:

n -

Returns:

Throws:

FrameNotFoundException

getTypeOfPicture

public byte getTypeOfPicture(int n)
                      throws FrameNotFoundException

Throws:

FrameNotFoundException

toString

public java.lang.String toString()