Class JPEGSegmentImageInputStream

java.lang.Object

javax.imageio.stream.ImageInputStreamImpl

com.twelvemonkeys.imageio.plugins.jpeg.JPEGSegmentImageInputStream

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable, ImageInputStream

final class JPEGSegmentImageInputStream
extends ImageInputStreamImpl

ImageInputStream implementation that filters out or rewrites certain JPEG segments.

Version:

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

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static final class	JPEGSegmentImageInputStream.AdobeAPP14Replacement	Workaround for a known bug in com.sun.imageio.plugins.jpeg.AdobeMarkerSegment, leaving the buffer in an inconsistent state, if the length of the APP14/Adobe is not exactly 16 bytes.
(package private) static final class	JPEGSegmentImageInputStream.ComponentIdSet
(package private) static final class	JPEGSegmentImageInputStream.DownsampledDQTReplacement	Workaround for a known bug in com.sun.imageio.plugins.jpeg.DQTMarkerSegment, throwing exception, if the DQT precision is 16 bits (not 8 bits).
(package private) static class	JPEGSegmentImageInputStream.ReplacementSegment
(package private) static class	JPEGSegmentImageInputStream.Segment

Field Summary

Fields

Modifier and Type	Field	Description
private final JPEGSegmentImageInputStream.ComponentIdSet	componentIds
private int	currentSegment
private JPEGSegmentImageInputStream.Segment	segment
private final List<JPEGSegmentImageInputStream.Segment>	segments
private final ImageInputStream	stream
private final JPEGSegmentWarningListener	warningListener

Fields inherited from class ImageInputStreamImpl

bitOffset, byteOrder, flushedPos, streamPos

Constructor Summary

Constructors

Constructor	Description
JPEGSegmentImageInputStream(ImageInputStream stream)
JPEGSegmentImageInputStream(ImageInputStream stream, JPEGSegmentWarningListener warningListener)

Method Summary

Modifier and Type	Method	Description
(package private) static String	asAsciiString(byte[] data, int offset, int length)
(package private) static String	asNullTerminatedAsciiString(byte[] data, int offset)
private JPEGSegmentImageInputStream.Segment	fetchSegment()
protected void	finalize()	Deprecated.
(package private) static boolean	isAppSegmentMarker(int marker)
private static boolean	isAppSegmentWithId(String segmentId, ImageInputStream stream)
(package private) static boolean	isSOFMarker(int marker)
private void	processWarningOccured(String warning)
int	read()
int	read(byte[] b, int off, int len)
private byte[]	readReplaceDuplicateSOFnComponentIds(int marker, long length)
private byte[]	readReplaceDuplicateSOSComponentSelectors(long length)
private static byte[]	readSegment(int marker, int length, ImageInputStream stream)
private void	repositionAsNecessary()
private void	streamInit()

Methods inherited from class ImageInputStreamImpl

checkClosed, close, flush, flushBefore, getBitOffset, getByteOrder, getFlushedPosition, getStreamPosition, isCached, isCachedFile, isCachedMemory, length, 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, seek, setBitOffset, setByteOrder, skipBytes, skipBytes

Methods inherited from class Object

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

Field Details

stream

private final ImageInputStream stream

warningListener

private final JPEGSegmentWarningListener warningListener

componentIds

private final JPEGSegmentImageInputStream.ComponentIdSet componentIds

segments

private final List<JPEGSegmentImageInputStream.Segment> segments

currentSegment

private int currentSegment

segment

private JPEGSegmentImageInputStream.Segment segment

Constructor Details

JPEGSegmentImageInputStream

JPEGSegmentImageInputStream(ImageInputStream stream,
 JPEGSegmentWarningListener warningListener)

JPEGSegmentImageInputStream

JPEGSegmentImageInputStream(ImageInputStream stream)

Method Details

processWarningOccured

private void processWarningOccured(String warning)

fetchSegment

private JPEGSegmentImageInputStream.Segment fetchSegment()
                                                  throws IOException

Throws:

IOException

readReplaceDuplicateSOSComponentSelectors

private byte[] readReplaceDuplicateSOSComponentSelectors(long length)
                                                  throws IOException

Throws:

IOException

readReplaceDuplicateSOFnComponentIds

private byte[] readReplaceDuplicateSOFnComponentIds(int marker,
 long length)
                                             throws IOException

Throws:

IOException

readSegment

private static byte[] readSegment(int marker,
 int length,
 ImageInputStream stream)
                           throws IOException

Throws:

IOException

isAppSegmentWithId

private static boolean isAppSegmentWithId(String segmentId,
 ImageInputStream stream)
                                   throws IOException

Throws:

IOException

asNullTerminatedAsciiString

static String asNullTerminatedAsciiString(byte[] data,
 int offset)

asAsciiString

static String asAsciiString(byte[] data,
 int offset,
 int length)

streamInit

private void streamInit()
                 throws IOException

Throws:

IOException

isAppSegmentMarker

static boolean isAppSegmentMarker(int marker)

isSOFMarker

static boolean isSOFMarker(int marker)

repositionAsNecessary

private void repositionAsNecessary()
                            throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in interface ImageInputStream

Specified by:

read in class ImageInputStreamImpl

Throws:

IOException

read

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

Specified by:

read in interface ImageInputStream

Specified by:

read in class ImageInputStreamImpl

Throws:

IOException

finalize

@Deprecated
protected void finalize()

Deprecated.

Overrides:

finalize in class ImageInputStreamImpl