Package com.twelvemonkeys.imageio.plugins.tiff

Class YCbCrUpsamplerStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.twelvemonkeys.imageio.plugins.tiff.YCbCrUpsamplerStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

final class YCbCrUpsamplerStream
extends java.io.FilterInputStream

Input stream that provides on-the-fly upsampling of TIFF subsampled YCbCr samples.

Version:

$Id: YCbCrUpsamplerStream.java,v 1.0 31.01.13 09:25 haraldk Exp$

Field Summary

Fields

Modifier and Type	Field	Description
private byte[]	buffer
(package private) int	bufferLength
(package private) int	bufferPos
private int	columns
(package private) int	decodedLength
(package private) int	decodedPos
private byte[]	decodedRows
private int	horizChromaSub
private int	padding
private int	units
private int	unitSize
private int	vertChromaSub
private int	yCbCrPos

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
YCbCrUpsamplerStream(java.io.InputStream stream, int[] chromaSub, int yCbCrPos, int columns)

Method Summary

Modifier and Type	Method	Description
private void	decodeRows()
private void	fetch()
boolean	markSupported()
int	read()
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

available, close, mark, read

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Detail

horizChromaSub

private final int horizChromaSub

vertChromaSub

private final int vertChromaSub

yCbCrPos

private final int yCbCrPos

columns

private final int columns

units

private final int units

unitSize

private final int unitSize

padding

private final int padding

decodedRows

private final byte[] decodedRows

decodedLength

int decodedLength

decodedPos

int decodedPos

buffer

private final byte[] buffer

bufferLength

int bufferLength

bufferPos

int bufferPos

Constructor Detail

YCbCrUpsamplerStream

public YCbCrUpsamplerStream(java.io.InputStream stream,
                            int[] chromaSub,
                            int yCbCrPos,
                            int columns)

Method Detail

fetch

private void fetch()
            throws java.io.IOException

Throws:

java.io.IOException

decodeRows

private void decodeRows()
                 throws java.io.EOFException

Throws:

java.io.EOFException

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

skip

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

Overrides:

skip in class java.io.FilterInputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.FilterInputStream

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class java.io.FilterInputStream

Throws:

java.io.IOException