Plugin / JSM's Adobe XMP / IPTC for WordPress

Description

Retrieve the following Adobe XMP / IPTC information from images in the WordPress Media Library and NextGEN Galleries:

• Creator Email
• Owner Name
• Creation Date
• Modification Date
• Label
• Credit
• Source
• Headline
• City
• State
• Country
• Country Code
• Location
• Title
• Description
• Creator
• Keywords
• Hierarchical Keywords

The extracted XMP / IPTC data is cached on disk to improve performance and is refreshed if / when the original image is modified.

You can use the plugin in one of two ways; calling a method in your theme template(s) or using the [xmp] shortcode in your content.

There are no plugin settings — simply install and activate the plugin.

Retrieve XMP Data as an Array

$adobeXMP =& adobeXMPforWP::get_instance();

/**
 * Some default class properties can be modified.
 */
$adobeXMP->use_cache = true;    // default
$adobeXMP->max_size = 512000;   // default
$adobeXMP->chunk_size = 65536;  // default

/**
 * The $id can be a WordPress Media Library image ID,
 * or NextGEN Gallery image ID in the form of ngg-##.
 */
$image_xmp = $adobeXMP->get_xmp( $id );

echo '<p>Photograph by '.$image_xmp['Creator'].'</p>';

You can also hook the ‘adobe_xmp_cache_dir’ filter to modify the default cache directory.

Include a Shortcode in your Post or Page

[xmp id="101,ngg-201"]

This shortcode prints all the XMP information for Media Library image ID “101” and NextGEN Gallery image ID “201”. The XMP information is printed as a definition list <dl> with a class name of xmp_shortcode that you can style for your needs. Each <dt> and <dd> element also has a style corresponding to it’s title – for example, the “Creator” list element has an xmp_creator class name. Here’s an example of the definition list HTML:

<dl class="xmp_shortcode">
<dt class="xmp_credit">Credit</dt>
<dd class="xmp_credit">JS Morisset</dd>
<dt class="xmp_source">Source</dt>
<dd class="xmp_source">Underwater Focus</dd>
<dt class="xmp_hierarchical_keywords">Hierarchical Keywords</dt>
<dd class="xmp_hierarchical_keywords">What &gt; Photography &gt; 
    Field of View &gt; Wide-Angle &gt; Fish-Eye</dd>
</dl>

The shortcode can also take a few additional arguments:

• include (defaults to “all”)

Define which XMP elements to include, for example:

[xmp id="101" include="creator,creator email"]

• exclude (defaults to none)

Exclude some XMP elements, for example to print all XMP elements, except for the “creator email”:

[xmp id="101" exclude="creator email"]

• show_title (defaults to “yes”)

Include / exclude the <dt> definition titles.

[xmp id="101" show_title="no"]

• show_empty (defaults to “no”)

Include / exclude empty <dd> definition values.

• not_keyword (defaults to none)

Exclude a list of (case incensitive) keywords, for example:

[xmp id="101" not_keyword="who,what,where"]

To exclude a hierarchical keyword list, use hyphens between the keywords, for example:

[xmp id="101" not_keyword="who,what,where,who-people-unknown"]