Package org.anchoranalysis.plugin.io.bean.metadata.reader

Class InferFromHeader

Object

AnchorBean<ImageMetadataReader>

ImageMetadataReader

InferFromHeader

public class InferFromHeader
extends ImageMetadataReader

Tries to construct the ImageMetadata from EXIF and other metadata, if available, or otherwise falls back to another reader.

It supports a limited number of file-types, as identified by an extension in the path. By default, it supports:

• JPEG (.jpg or .jpeg)
• PNG (.png)

Author:

Owen Feehan

Constructor Summary

Constructors

Constructor	Description
InferFromHeader()
InferFromHeader(ImageMetadataReader fallback, List<HeaderFormat> formats)	Creates a new InferFromHeader instance.

Method Summary

Modifier and Type	Method	Description
ImageMetadataReader	getFallback()	Fallback to use if EXIF information is non-existing or absent.
List<HeaderFormat>	getFormats()	The formats whose headers will be searched, to find sufficient metadata to populate ImageMetadata.
ImageMetadata	openFile(Path path, StackReader defaultStackReader, OperationContext context)	Opens a file containing one or more images but does not read an image.
void	setFallback(ImageMetadataReader fallback)	Fallback to use if EXIF information is non-existing or absent.
void	setFormats(List<HeaderFormat> formats)	The formats whose headers will be searched, to find sufficient metadata to populate ImageMetadata.

Methods inherited from class org.anchoranalysis.bean.AnchorBean

checkMisconfigured, describeBean, describeChildren, duplicateBean, fields, findFieldsOfClass, getBeanName, getLocalPath, localise, toString

Methods inherited from class java.lang.Object

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

Constructor Details

InferFromHeader

public InferFromHeader()

InferFromHeader

public InferFromHeader(ImageMetadataReader fallback,
 List<HeaderFormat> formats)

Creates a new InferFromHeader instance.

Parameters:

fallback - Fallback to use if EXIF information is non-existing or absent.

formats - The formats whose headers will be searched, to find sufficient metadata to populate ImageMetadata.

Method Details

openFile

public ImageMetadata openFile(Path path,
 StackReader defaultStackReader,
 OperationContext context)
                       throws ImageIOException

Description copied from class: ImageMetadataReader

Opens a file containing one or more images but does not read an image.

Specified by:

openFile in class ImageMetadataReader

Parameters:

path - where the file is located.

defaultStackReader - the default StackReader to use, if needed, and if not otherwise specified, for reading metadata.

context - context for reading a stack from the file-system.

Returns:

an interface to the opened file that should be closed when no longer in use.

Throws:

ImageIOException - if the file cannot be read.

getFallback

public ImageMetadataReader getFallback()

Fallback to use if EXIF information is non-existing or absent.

setFallback

public void setFallback(ImageMetadataReader fallback)

Fallback to use if EXIF information is non-existing or absent.

getFormats

public List<HeaderFormat> getFormats()

The formats whose headers will be searched, to find sufficient metadata to populate ImageMetadata.

setFormats

public void setFormats(List<HeaderFormat> formats)

The formats whose headers will be searched, to find sufficient metadata to populate ImageMetadata.