ch.randelshofer.io
Class SubImageInputStream

java.lang.Object
  javax.imageio.stream.ImageInputStreamImpl
      ch.randelshofer.io.SubImageInputStream

All Implemented Interfaces:

java.io.DataInput, javax.imageio.stream.ImageInputStream

public class SubImageInputStream
extends javax.imageio.stream.ImageInputStreamImpl

SubImageInputStream.

Version:

1.1 2010-07-23 Seeks to initial offset in constructor.
1.0 2010-01-05 Created.

Author:

Werner Randelshofer

Field Summary

Fields inherited from class javax.imageio.stream.ImageInputStreamImpl

bitOffset, byteOrder, flushedPos, streamPos

Constructor Summary

SubImageInputStream(javax.imageio.stream.ImageInputStream in, long offset, long length)

Method Summary

void	flush()
long	getFlushedPosition()
long	getStreamPosition()
boolean	isCached() Default implementation returns false.
boolean	isCachedFile()
boolean	isCachedMemory() Default implementation returns false.
long	length()
int	read()
int	read(byte[] b, int off, int len)
void	seek(long pos)

Methods inherited from class javax.imageio.stream.ImageInputStreamImpl

checkClosed, close, finalize, flushBefore, getBitOffset, getByteOrder, mark, read, readBit, readBits, readBoolean, readByte, readBytes, readChar, readDouble, readFloat, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedInt, readUnsignedShort, readUTF, reset, setBitOffset, setByteOrder, skipBytes, skipBytes

Methods inherited from class java.lang.Object

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

Constructor Detail

SubImageInputStream

public SubImageInputStream(javax.imageio.stream.ImageInputStream in,
                           long offset,
                           long length)
                    throws java.io.IOException

Throws:

java.io.IOException

Method Detail

read

public int read()
         throws java.io.IOException

Specified by:

read in interface javax.imageio.stream.ImageInputStream

Specified by:

read in class javax.imageio.stream.ImageInputStreamImpl

Throws:

java.io.IOException

read

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

Specified by:

read in interface javax.imageio.stream.ImageInputStream

Specified by:

read in class javax.imageio.stream.ImageInputStreamImpl

Throws:

java.io.IOException

getStreamPosition

public long getStreamPosition()
                       throws java.io.IOException

Specified by:

getStreamPosition in interface javax.imageio.stream.ImageInputStream

Overrides:

getStreamPosition in class javax.imageio.stream.ImageInputStreamImpl

Throws:

java.io.IOException

seek

public void seek(long pos)
          throws java.io.IOException

Specified by:

seek in interface javax.imageio.stream.ImageInputStream

Overrides:

seek in class javax.imageio.stream.ImageInputStreamImpl

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface javax.imageio.stream.ImageInputStream

Overrides:

flush in class javax.imageio.stream.ImageInputStreamImpl

Throws:

java.io.IOException

getFlushedPosition

public long getFlushedPosition()

Specified by:

getFlushedPosition in interface javax.imageio.stream.ImageInputStream

Overrides:

getFlushedPosition in class javax.imageio.stream.ImageInputStreamImpl

isCached

public boolean isCached()

Default implementation returns false. Subclasses should override this if they cache data.

Specified by:

isCached in interface javax.imageio.stream.ImageInputStream

Overrides:

isCached in class javax.imageio.stream.ImageInputStreamImpl

isCachedMemory

public boolean isCachedMemory()

Default implementation returns false. Subclasses should override this if they cache data in main memory.

Specified by:

isCachedMemory in interface javax.imageio.stream.ImageInputStream

Overrides:

isCachedMemory in class javax.imageio.stream.ImageInputStreamImpl

isCachedFile

public boolean isCachedFile()

Specified by:

isCachedFile in interface javax.imageio.stream.ImageInputStream

Overrides:

isCachedFile in class javax.imageio.stream.ImageInputStreamImpl

length

public long length()

Specified by:

length in interface javax.imageio.stream.ImageInputStream

Overrides:

length in class javax.imageio.stream.ImageInputStreamImpl