edu.harvard.hul.ois.jhove.module.jpeg2000
Class FragmentInputStream

java.lang.Object
  java.io.InputStream
      edu.harvard.hul.ois.jhove.module.jpeg2000.FragmentInputStream

All Implemented Interfaces:

java.io.Closeable

public class FragmentInputStream
extends java.io.InputStream

A FragmentInputStream provides an interface by which the scattered fragments of a Fragment List Box can be read as a single stream. Only fragments within the originating file are supported, not fragments in external files.

Author:

Gary McGath

Constructor Summary

FragmentInputStream(java.util.List<long[]> fragments, java.io.RandomAccessFile raf)

FragmentInputStream(java.util.List<long[]> fragments, java.io.RandomAccessFile raf, int bufSize)

Method Summary

int	read() Returns the next byte from the stream, buffering each fragment in turn until the last fragment is exhausted.

Methods inherited from class java.io.InputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

FragmentInputStream

public FragmentInputStream(java.util.List<long[]> fragments,
                           java.io.RandomAccessFile raf)

Parameters:

fragments - List of fragment entries. Each fragment entry is an array of two longs, with fragment[0] being the length and fragment[1] the offset.

FragmentInputStream

public FragmentInputStream(java.util.List<long[]> fragments,
                           java.io.RandomAccessFile raf,
                           int bufSize)

Method Detail

read

public int read()
         throws java.io.IOException

Returns the next byte from the stream, buffering each fragment in turn until the last fragment is exhausted.

Specified by:

read in class java.io.InputStream

Returns:

The next byte of the stream, or -1 to indicate no more bytes are available.

Throws:

java.io.IOException