Class JPEGSegmentImageInputStream.DownsampledDQTReplacement

java.lang.Object

com.twelvemonkeys.imageio.plugins.jpeg.JPEGSegmentImageInputStream.Segment

com.twelvemonkeys.imageio.plugins.jpeg.JPEGSegmentImageInputStream.ReplacementSegment

com.twelvemonkeys.imageio.plugins.jpeg.JPEGSegmentImageInputStream.DownsampledDQTReplacement

Enclosing class:

JPEGSegmentImageInputStream

static final class JPEGSegmentImageInputStream.DownsampledDQTReplacement
extends JPEGSegmentImageInputStream.ReplacementSegment

Workaround for a known bug in com.sun.imageio.plugins.jpeg.DQTMarkerSegment, throwing exception, if the DQT precision is 16 bits (not 8 bits). Native reader seems to cope fine though. This downsampling of the quality tables, creates visually same results, with no exceptions thrown.

Version:

$Id: JPEGSegmentImageInputStream.java,v 1.0 30.01.12 16:15 haraldk Exp$

Field Summary

Fields inherited from class JPEGSegmentImageInputStream.ReplacementSegment

data, pos, realLength

Fields inherited from class JPEGSegmentImageInputStream.Segment

length, marker, realStart, start

Constructor Summary

Constructors

Constructor	Description
DownsampledDQTReplacement(long realStart, long start, long realLength, int qtInfo, ImageInputStream stream)

Method Summary

Modifier and Type	Method	Description
private static byte[]	createMarkerFixedLength(int length, int qtInfo, ImageInputStream stream)

Methods inherited from class JPEGSegmentImageInputStream.ReplacementSegment

read, read, realEnd, seek

Methods inherited from class JPEGSegmentImageInputStream.Segment

end, toString

Methods inherited from class Object

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

Constructor Details

DownsampledDQTReplacement

DownsampledDQTReplacement(long realStart,
 long start,
 long realLength,
 int qtInfo,
 ImageInputStream stream)
                   throws IOException

Throws:

IOException

Method Details

createMarkerFixedLength

private static byte[] createMarkerFixedLength(int length,
 int qtInfo,
 ImageInputStream stream)
                                       throws IOException

Throws:

IOException