ij.io
Class RandomAccessStream

java.lang.Object
  java.io.InputStream
      ij.io.RandomAccessStream

All Implemented Interfaces:

Closeable

public final class RandomAccessStream
extends InputStream

This class uses a memory cache to allow seeking within an InputStream. Based on the JAI MemoryCacheSeekableStream class. Can also be constructed from a RandomAccessFile, which uses less memory since the memory cache is not required.

Constructor Summary

RandomAccessStream(InputStream inputstream)
Constructs a RandomAccessStream from an InputStream.

RandomAccessStream(RandomAccessFile ras)
Constructs a RandomAccessStream from an RandomAccessFile.

Method Summary

void	close()
int	getFilePointer()
long	getLongFilePointer()
int	read()
int	read(byte[] bytes, int off, int len)
double	readDouble()
float	readFloat()
void	readFully(byte[] bytes)
void	readFully(byte[] bytes, int len)
int	readInt()
long	readLong()
short	readShort()
void	seek(int loc)
void	seek(long loc)

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomAccessStream

public RandomAccessStream(InputStream inputstream)

Constructs a RandomAccessStream from an InputStream. Seeking backwards is supported using a memory cache.

RandomAccessStream

public RandomAccessStream(RandomAccessFile ras)

Constructs a RandomAccessStream from an RandomAccessFile.

Method Detail

getFilePointer

public int getFilePointer()
                   throws IOException

Throws:

IOException

getLongFilePointer

public long getLongFilePointer()
                        throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] bytes,
                int off,
                int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

readFully

public final void readFully(byte[] bytes)
                     throws IOException

Throws:

IOException

readFully

public final void readFully(byte[] bytes,
                            int len)
                     throws IOException

Throws:

IOException

seek

public void seek(long loc)
          throws IOException

Throws:

IOException

seek

public void seek(int loc)
          throws IOException

Throws:

IOException

readInt

public final int readInt()
                  throws IOException

Throws:

IOException

readLong

public final long readLong()
                    throws IOException

Throws:

IOException

readDouble

public final double readDouble()
                        throws IOException

Throws:

IOException

readShort

public final short readShort()
                      throws IOException

Throws:

IOException

readFloat

public final float readFloat()
                      throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException