org.jaudiotagger.audio.asf.io
Class CountingInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          org.jaudiotagger.audio.asf.io.CountingInputStream

All Implemented Interfaces:

java.io.Closeable

 class CountingInputStream
extends java.io.FilterInputStream

This implementation of FilterInputStream counts each read byte.
So at each time, with getReadCount() one can determine how many bytes have been read, by this classes read and skip methods (mark and reset are also taken into account).

Author:

Christian Laireiter

Field Summary

private long	markPos If mark(int) has been called, the current value of readCount is stored, in order to reset it upon reset().
private long	readCount The amount of read or skipped bytes.

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

CountingInputStream(java.io.InputStream stream)
Creates an instance, which delegates the commands to the given stream.

Method Summary

private void	bytesRead(long amountRead) Counts the given amount of bytes.
long	getReadCount()
void	mark(int readlimit)
int	read()
int	read(byte[] destination, int off, int len)
void	reset()
long	skip(long amount)

Methods inherited from class java.io.FilterInputStream

available, close, markSupported, read

Methods inherited from class java.lang.Object

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

Field Detail

markPos

private long markPos

If mark(int) has been called, the current value of readCount is stored, in order to reset it upon reset().

readCount

private long readCount

The amount of read or skipped bytes.

Constructor Detail

CountingInputStream

public CountingInputStream(java.io.InputStream stream)

Creates an instance, which delegates the commands to the given stream.

Parameters:

stream - stream to actually work with.

Method Detail

bytesRead

private void bytesRead(long amountRead)

Counts the given amount of bytes.

Parameters:

amountRead - number of bytes to increase.

getReadCount

public long getReadCount()

Returns:

the readCount

mark

public void mark(int readlimit)

Overrides:

mark in class java.io.FilterInputStream

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

read

public int read(byte[] destination,
                int off,
                int len)
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class java.io.FilterInputStream

Throws:

java.io.IOException

skip

public long skip(long amount)
          throws java.io.IOException

Overrides:

skip in class java.io.FilterInputStream

Throws:

java.io.IOException