JfifReader (metadata-extractor - Javadoc - Extracts Exif, IPTC, XMP, ICC and other metadata from image files)

java.lang.Object
- com.drew.metadata.jfif.JfifReader

All Implemented Interfaces:

JpegSegmentMetadataReader, MetadataReader
```
public class JfifReader
extends Object
implements JpegSegmentMetadataReader, MetadataReader
```
Reader for JFIF data, found in the APP0 JPEG segment.
More info at: http://en.wikipedia.org/wiki/JPEG_File_Interchange_Format

Author:

Yuri Binev, Drew Noakes, Markus Meyer

Constructor Summary

Constructors
Constructor and Description

JfifReader()

Constructors
Constructor and Description
`JfifReader()`

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`canProcess(byte[] segmentBytes, JpegSegmentType segmentType)` Gets a value indicating whether the supplied byte data can be processed by this reader.
`void`	`extract(byte[] segmentBytes, Metadata metadata, JpegSegmentType segmentType)` Extracts metadata from a JPEG segment's byte array and merges it into the specified `Metadata` object.
`void`	`extract(RandomAccessReader reader, Metadata metadata)` Performs the Jfif data extraction, adding found values to the specified instance of `Metadata`.
`Iterable<JpegSegmentType>`	`getSegmentTypes()` Gets the set of JPEG segment types that this reader is interested in.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - JfifReader
```
public JfifReader()
```
- Method Detail
  - getSegmentTypes
```
public Iterable<JpegSegmentType> getSegmentTypes()
```
    Description copied from interface: JpegSegmentMetadataReader
    
    Gets the set of JPEG segment types that this reader is interested in.
    
    Specified by:
    
    getSegmentTypes in interface JpegSegmentMetadataReader
  - canProcess
```
public boolean canProcess(byte[] segmentBytes,
                 JpegSegmentType segmentType)
```
    Description copied from interface: JpegSegmentMetadataReader
    
    Gets a value indicating whether the supplied byte data can be processed by this reader. This is not a guarantee that no errors will occur, but rather a best-effort indication of whether the parse is likely to succeed. Implementations are expected to check things such as the opening bytes, data length, etc.
    
    Specified by:
    
    canProcess in interface JpegSegmentMetadataReader
  - extract
```
public void extract(byte[] segmentBytes,
           Metadata metadata,
           JpegSegmentType segmentType)
```
    Description copied from interface: JpegSegmentMetadataReader
    
    Extracts metadata from a JPEG segment's byte array and merges it into the specified Metadata object.
    
    Specified by:
    
    extract in interface JpegSegmentMetadataReader
    
    Parameters:
    segmentBytes - The byte array from which the metadata should be extracted.
    metadata - The Metadata object into which extracted values should be merged.
    segmentType - The JpegSegmentType being read.
  - extract
```
public void extract(RandomAccessReader reader,
           Metadata metadata)
```
    Performs the Jfif data extraction, adding found values to the specified instance of Metadata.
    
    Specified by:
    
    extract in interface MetadataReader
    
    Parameters:
    reader - The RandomAccessReader from which the metadata should be extracted.
    metadata - The Metadata object into which extracted values should be merged.

Class JfifReader

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

JfifReader

Method Detail

getSegmentTypes

canProcess

extract

extract