Class JPEGSegmentUtil
- java.lang.Object
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- com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegmentUtil
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public final class JPEGSegmentUtil extends java.lang.Object
JPEGSegmentUtil- Version:
- $Id: JPEGSegmentUtil.java,v 1.0 24.01.11 17.37 haraldk Exp$
- Author:
- Harald Kuhr, last modified by $Author: haraldk$
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Field Summary
Fields Modifier and Type Field Description static java.util.List<java.lang.String>
ALL_IDS
static java.util.Map<java.lang.Integer,java.util.List<java.lang.String>>
ALL_SEGMENTS
static java.util.Map<java.lang.Integer,java.util.List<java.lang.String>>
APP_SEGMENTS
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static boolean
isKnownJPEGMarker(int marker)
static void
main(java.lang.String[] args)
static java.util.List<JPEGSegment>
readSegments(javax.imageio.stream.ImageInputStream stream, int marker, java.lang.String identifier)
Reads the requested JPEG segments from the stream.static java.util.List<JPEGSegment>
readSegments(javax.imageio.stream.ImageInputStream stream, java.util.Map<java.lang.Integer,java.util.List<java.lang.String>> segmentIdentifiers)
Reads the requested JPEG segments from the stream.
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Field Detail
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ALL_IDS
public static final java.util.List<java.lang.String> ALL_IDS
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ALL_SEGMENTS
public static final java.util.Map<java.lang.Integer,java.util.List<java.lang.String>> ALL_SEGMENTS
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APP_SEGMENTS
public static final java.util.Map<java.lang.Integer,java.util.List<java.lang.String>> APP_SEGMENTS
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Method Detail
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readSegments
public static java.util.List<JPEGSegment> readSegments(javax.imageio.stream.ImageInputStream stream, int marker, java.lang.String identifier) throws java.io.IOException
Reads the requested JPEG segments from the stream. The stream position must be directly before the SOI marker, and only segments for the current image is read.- Parameters:
stream
- the stream to read from.marker
- the segment marker to readidentifier
- the identifier to read, ornull
to match any segment- Returns:
- a list of segments with the given app marker and optional identifier. If no segments are found, an empty list is returned.
- Throws:
javax.imageio.IIOException
- if a JPEG format exception occurs during readingjava.io.IOException
- if an I/O exception occurs during reading
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readSegments
public static java.util.List<JPEGSegment> readSegments(javax.imageio.stream.ImageInputStream stream, java.util.Map<java.lang.Integer,java.util.List<java.lang.String>> segmentIdentifiers) throws java.io.IOException
Reads the requested JPEG segments from the stream. The stream position must be directly before the SOI marker, and only segments for the current image is read.- Parameters:
stream
- the stream to read from.segmentIdentifiers
- the segment identifiers- Returns:
- a list of segments with the given app markers and optional identifiers. If no segments are found, an empty list is returned.
- Throws:
javax.imageio.IIOException
- if a JPEG format exception occurs during readingjava.io.IOException
- if an I/O exception occurs during reading- See Also:
ALL_SEGMENTS
,APP_SEGMENTS
,ALL_IDS
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isKnownJPEGMarker
public static boolean isKnownJPEGMarker(int marker)
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main
public static void main(java.lang.String[] args) throws java.io.IOException
- Throws:
java.io.IOException
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