Class InputDriver

java.lang.Object

InputDriver

public class InputDriver
extends java.lang.Object

The driver class for generating and simulating the input queue. THIS CLASS REQUIRES NETWORK CONNECTION TO SIMULATE THE TRANSMISSION OF IMAGES.

Constructor Summary

Constructors

Constructor and Description
InputDriver(java.lang.String path, boolean header) Constructs a InputDriver.

Method Summary

Methods

Modifier and Type	Method and Description
protected SimplePacket	getNextPacket() Do not use this method.
protected boolean	resendMissingPacket(int seq) Do not use this method.
protected boolean	resendPacket(SimplePacket pkt) Do not use this method.
protected boolean	validFile(PacketLinkedList<SimplePacket> list) Do not use this method.
protected boolean	validHeader(SimplePacket p) Do not use this method.

Methods inherited from class java.lang.Object

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

Constructor Detail

InputDriver

public InputDriver(java.lang.String path,
           boolean header)
            throws java.io.IOException

Constructs a InputDriver.

Parameters:

path - the file path for generating the input queue

header -

Throws:

java.io.IOException

Method Detail

getNextPacket

protected SimplePacket getNextPacket()

Do not use this method. Use Receiver.askForNextPacket() instead.

Returns:

next packet to pass into receiving queue

resendPacket

protected boolean resendPacket(SimplePacket pkt)

Do not use this method. Use Receiver.askForRetransmit(SimplePacket) instead.

Returns:

true if the packet is invalid checksum that must be resent; otherwise, false

Throws:

java.lang.IllegalArgumentException - when the requested packet is null or it has invalid sequence number

resendMissingPacket

protected boolean resendMissingPacket(int seq)

Do not use this method. Use Receiver.askForMissingPacket(int) instead.

Returns:

true if the packet is truly missing in the receiving queue; otherwise, false.

Throws:

java.lang.IllegalArgumentException - when seq is negative

java.lang.RuntimeException - when requesting End of Streaming Notification Packet while receiving queue is not empty

validFile

protected boolean validFile(PacketLinkedList<SimplePacket> list)

Do not use this method. Use Receiver.validImageContent() instead.

Parameters:

list - the list buffer

Returns:

true if the list buffer has a valid image content; otherwise, false

validHeader

protected boolean validHeader(SimplePacket p)

Do not use this method. Use Receiver.validImageHeader() instead.

Parameters:

p - the header packet

Returns:

true if this header packet is valid; otherwise, false