mediaframe.mpeg1
Class DataBlock

java.lang.Object
  |
  +--mediaframe.mpeg1.DataBlock

public final class DataBlock

extends java.lang.Object

The DataBlock class represents a block of 64 bytes. This class contains methods for storing and reading the movie data. It contains the link to the next datablock with the movie data.

Author:

Konstantin Belous

Field Summary

static int	BLOCKSIZE The length of the block in bytes.
long[]	data The movie's data.
int	lastSize The size the last information word (0-4).
long	lastWord The last 0-4 information bytes (the last information word).
private DataBlock	next The next datablock object.
int	size The size if the datablock.

Constructor Summary

DataBlock()
Constructs a Datablock without data.

DataBlock(DataBlock prevBlock)
Constructs an empty Datablock as a continue of the existed Datablock.

Method Summary

void	close() Closes this data block.
DataBlock	getNext() Gets the next Datablock object.
boolean	hasNext() Returns true if this data block has the next data block as a continue of it's data.
boolean	isFull() Returns true if this data block is full and can't store more data bytes.
void	setFirstWord(long word) Sets the first information word.
void	setNext(DataBlock nextBlock) Sets the next Datablock as a continue of this data block.
void	setSize(int size) Sets the size of this data block.
void	write(int Byte) Puts a byte into this data block.

Methods inherited from class java.lang.Object

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

Field Detail

BLOCKSIZE

public static final int BLOCKSIZE

The length of the block in bytes.

See Also:

Constant Field Values

size

public int size

The size if the datablock.

data

public long[] data

The movie's data.

lastWord

public long lastWord

The last 0-4 information bytes (the last information word).

lastSize

public int lastSize

The size the last information word (0-4).

next

private DataBlock next

The next datablock object.

Constructor Detail

DataBlock

public DataBlock()

Constructs a Datablock without data.

DataBlock

public DataBlock(DataBlock prevBlock)

Constructs an empty Datablock as a continue of the existed Datablock.

Parameters:

prevBlock - the previous Datablock

Method Detail

hasNext

public boolean hasNext()

Returns true if this data block has the next data block as a continue of it's data.

Returns:

true if this data block has the next data block as a continue of it's data.

setFirstWord

public void setFirstWord(long word)

Sets the first information word.

Parameters:

word - the first information word.

setNext

public void setNext(DataBlock nextBlock)

Sets the next Datablock as a continue of this data block.

Parameters:

nextBlock - the next Datablock object.

getNext

public DataBlock getNext()

Gets the next Datablock object.

Returns:

the next Datablock object.

setSize

public void setSize(int size)

Sets the size of this data block.

Parameters:

size - the size of this data block.

isFull

public boolean isFull()

Returns true if this data block is full and can't store more data bytes.

Returns:

true if this data block is full.

write

public void write(int Byte)

Puts a byte into this data block.

Parameters:

Byte - the byte of the movie's data.

close

public void close()

Closes this data block. Calculates the last information word (last 0-3 bytes of the information) and it's length.