uk.co.mmscomputing.imageio.jpeg
Class JPEGDCTInputStream

java.lang.Object
  java.io.InputStream
      uk.co.mmscomputing.imageio.jpeg.JPEGACInputStream
          uk.co.mmscomputing.imageio.jpeg.JPEGDCTInputStream

All Implemented Interfaces:

java.io.Closeable, JPEGConstants

Direct Known Subclasses:

JPEGFastDCTInputStream

public class JPEGDCTInputStream
extends JPEGACInputStream

Field Summary

protected JPEGDCInputStream	dc
protected int	levelshift
protected int[]	matr1
protected int	negclamp
protected int	posclamp

Fields inherited from class uk.co.mmscomputing.imageio.jpeg.JPEGACInputStream

buffer, count, in, qt

Fields inherited from interface uk.co.mmscomputing.imageio.jpeg.JPEGConstants

APP0, APP1, APP10, APP11, APP12, APP13, APP14, APP15, APP2, APP3, APP4, APP5, APP6, APP7, APP8, APP9, COM, CQT, CQT2, DAC, DCTBlockSize, DCTSize, DHP, DHT, DNL, DQT, DRI, EOI, EXP, HCACTable, HCDCTable, HLACTable, HLDCTable, IZigZagTable, JPG, JPG0, JPG1, JPG10, JPG11, JPG12, JPG13, JPG2, JPG3, JPG4, JPG5, JPG6, JPG7, JPG8, JPG9, LQT, LQT2, MARK, RST0, RST1, RST2, RST3, RST4, RST5, RST6, RST7, SOF0, SOF1, SOF10, SOF11, SOF13, SOF14, SOF15, SOF2, SOF3, SOF5, SOF6, SOF7, SOF9, SOI, SOS, TEM, ZigZagTable

Constructor Summary

JPEGDCTInputStream(JPEGHuffmanInputStream dc, JPEGHuffmanInputStream ac, int[] qt, int bps)

Method Summary

void	fillBuffer()
int[]	getBuffer()
void	inverseDCT(int[] buffer)
protected void	levelShift()
int	read()
void	restart()

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

Field Detail

dc

protected JPEGDCInputStream dc

levelshift

protected int levelshift

negclamp

protected int negclamp

posclamp

protected int posclamp

matr1

protected int[] matr1

Constructor Detail

JPEGDCTInputStream

public JPEGDCTInputStream(JPEGHuffmanInputStream dc,
                          JPEGHuffmanInputStream ac,
                          int[] qt,
                          int bps)

Method Detail

restart

public void restart()
             throws java.io.IOException

Overrides:

restart in class JPEGACInputStream

Throws:

java.io.IOException

getBuffer

public int[] getBuffer()

levelShift

protected void levelShift()

fillBuffer

public void fillBuffer()
                throws java.io.IOException

Overrides:

fillBuffer in class JPEGACInputStream

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Overrides:

read in class JPEGACInputStream

Throws:

java.io.IOException

inverseDCT

public void inverseDCT(int[] buffer)
                throws java.io.IOException

Throws:

java.io.IOException