PHPXRef 0.7.1 : MediaWiki-1.24.0 : Detail view of BitmapMetadataHandler.php

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Extraction of metadata from different bitmap image types. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

File Size:	315 lines (10 kb)
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Defines 1 class

BitmapMetadataHandler:: (9 methods):
  doApp13()
  getExif()
  addMetadata()
  getMetadataArray()
  Jpeg()
  PNG()
  GIF()
  Tiff()
  getTiffByteOrder()

Class: BitmapMetadataHandler - X-Ref

Class to deal with reconciling and extracting metadata from bitmap images.
This is meant to comply with http://www.metadataworkinggroup.org/pdf/mwg_guidance.pdf

This sort of acts as an intermediary between MediaHandler::getMetadata
and the various metadata extractors.

doApp13( $app13 ) X-Ref

This does the photoshop image resource app13 block
of interest, IPTC-IIM metadata is stored here.

Mostly just calls doPSIR and doIPTC

param: string $app13 String containing app13 block from jpeg file

getExif( $filename, $byteOrder ) X-Ref

Get exif info using exif class.
Basically what used to be in BitmapHandler::getMetadata().
Just calls stuff in the Exif class.

Parameters are passed to the Exif class.

param: string $filename
param: string $byteOrder

addMetadata( $metaArray, $type = 'other' ) X-Ref

No description

getMetadataArray() X-Ref

Merge together the various types of metadata
the different types have different priorites,
and are merged in order.

This function is generally called by the media handlers' getMetadata()

return: array Metadata array

Jpeg( $filename ) X-Ref

No description

PNG( $filename ) X-Ref

No description

GIF( $filename ) X-Ref

No description

Tiff( $filename ) X-Ref

This doesn't do much yet, but eventually I plan to add
XMP support for Tiff. (PHP's exif support already extracts
but needs some further processing because PHP's exif support
is stupid...)

param: string $filename
return: array The metadata.

getTiffByteOrder( $filename ) X-Ref

Read the first 2 bytes of a tiff file to figure out
Little Endian or Big Endian. Needed for exif stuff.

param: string $filename The filename
return: string 'BE' or 'LE' or false

PHP Cross Reference of MediaWiki-1.24.0

/includes/media/ -> BitmapMetadataHandler.php (summary)

Defines 1 class