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<a href="#libtracker-extract-XMP.description" class="shortcut">Description</a>
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<a name="libtracker-extract-XMP"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="libtracker-extract-XMP.top_of_page"></a>XMP</span></h2>
<p>XMP — Extensible Metadata Platform (XMP)</p>
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<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libtracker-extract-XMP.stability-level"></a><h2>Stability Level</h2>
Stable, unless otherwise indicated
</div>
<div class="refsynopsisdiv">
<a name="libtracker-extract-XMP.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <libtracker-extract/tracker-extract.h>
<a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData">TrackerXmpData</a>;
<a class="link" href="libtracker-extract-XMP.html#TrackerXmpRegion" title="TrackerXmpRegion">TrackerXmpRegion</a>;
<a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="returnvalue">TrackerXmpData</span></a> * <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-new" title="tracker_xmp_new ()">tracker_xmp_new</a> (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *buffer</code></em>,
<em class="parameter"><code><span class="type">gsize</span> len</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-free" title="tracker_xmp_free ()">tracker_xmp_free</a> (<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-read" title="tracker_xmp_read ()">tracker_xmp_read</a> (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *buffer</code></em>,
<em class="parameter"><code><span class="type">size_t</span> len</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-apply" title="tracker_xmp_apply ()">tracker_xmp_apply</a> (<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *preupdate</code></em>,
<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *metadata</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *graph</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Strings.html#GString"><span class="type">GString</span></a> *where</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-apply-regions" title="tracker_xmp_apply_regions ()">tracker_xmp_apply_regions</a> (<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *preupdate</code></em>,
<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *metadata</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *graph</code></em>,
<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libtracker-extract-XMP.description"></a><h2>Description</h2>
<p>
The Adobe Extensible Metadata Platform (XMP) is a standard, created
by Adobe Systems Inc., for processing and storing standardized and
proprietary information relating to the contents of a file.
</p>
<p>
XMP standardizes the definition, creation, and processing of
extensible metadata. Serialized XMP can be embedded into a
significant number of popular file formats, without breaking their
readability by non-XMP-aware applications. Embedding metadata ("the
truth is in the file") avoids many problems that occur when
metadata is stored separately. XMP is used in PDF, photography and
photo editing applications.
</p>
<p>
This API is provided to remove code duplication between extractors
using these standards.
</p>
</div>
<div class="refsect1">
<a name="libtracker-extract-XMP.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="TrackerXmpData"></a><h3>TrackerXmpData</h3>
<pre class="programlisting">typedef struct {
/* NS_DC */
gchar *title;
gchar *rights;
gchar *creator;
gchar *description;
gchar *date;
gchar *keywords;
gchar *subject;
gchar *publisher;
gchar *contributor;
gchar *type;
gchar *format;
gchar *identifier;
gchar *source;
gchar *language;
gchar *relation;
gchar *coverage;
/* NS_CC */
gchar *license;
/* NS_PDF */
gchar *pdf_title;
gchar *pdf_keywords;
/* NS_EXIF */
gchar *title2;
gchar *time_original;
gchar *artist;
gchar *make;
gchar *model;
gchar *orientation;
gchar *flash;
gchar *metering_mode;
gchar *exposure_time;
gchar *fnumber;
gchar *focal_length;
gchar *iso_speed_ratings;
gchar *white_balance;
gchar *copyright;
/* TODO NS_XAP*/
gchar *rating;
/* TODO NS_IPTC4XMP */
/* TODO NS_PHOTOSHOP */
gchar *address;
gchar *country;
gchar *state;
gchar *city;
/* ABI barrier (don't change things above this) */
gchar *gps_altitude;
gchar *gps_altitude_ref;
gchar *gps_latitude;
gchar *gps_longitude;
gchar *gps_direction;
/* List of TrackerXmpRegion */
GSList *regions;
} TrackerXmpData;
</pre>
<p>
Structure defining XMP data of a given file.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.title"></a>title</code></em>;</span></p></td>
<td>Value for the dc:title property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.rights"></a>rights</code></em>;</span></p></td>
<td>Value for the dc:rights property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.creator"></a>creator</code></em>;</span></p></td>
<td>Value for the dc:creator property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.description"></a>description</code></em>;</span></p></td>
<td>Value for the dc:description property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.date"></a>date</code></em>;</span></p></td>
<td>Value for the dc:date property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.keywords"></a>keywords</code></em>;</span></p></td>
<td>Value for the dc:keywords property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.subject"></a>subject</code></em>;</span></p></td>
<td>Value for the dc:subject property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.publisher"></a>publisher</code></em>;</span></p></td>
<td>Value for the dc:publisher property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.contributor"></a>contributor</code></em>;</span></p></td>
<td>Value for the dc:contributor property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.type"></a>type</code></em>;</span></p></td>
<td>Value for the dc:type property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.format"></a>format</code></em>;</span></p></td>
<td>Value for the dc:format property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.identifier"></a>identifier</code></em>;</span></p></td>
<td>Value for the dc:identifier property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.source"></a>source</code></em>;</span></p></td>
<td>Value for the dc:source property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.language"></a>language</code></em>;</span></p></td>
<td>Value for the dc:language property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.relation"></a>relation</code></em>;</span></p></td>
<td>Value for the dc:relation property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.coverage"></a>coverage</code></em>;</span></p></td>
<td>Value for the dc:coverage property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.license"></a>license</code></em>;</span></p></td>
<td>Value for the nie:license property.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.pdf-title"></a>pdf_title</code></em>;</span></p></td>
<td>Title of the PDF.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.pdf-keywords"></a>pdf_keywords</code></em>;</span></p></td>
<td>Keywords in the PDF.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.title2"></a>title2</code></em>;</span></p></td>
<td>Title from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.time-original"></a>time_original</code></em>;</span></p></td>
<td>Original time from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.artist"></a>artist</code></em>;</span></p></td>
<td>Artist from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.make"></a>make</code></em>;</span></p></td>
<td>Make info from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.model"></a>model</code></em>;</span></p></td>
<td>Model from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.orientation"></a>orientation</code></em>;</span></p></td>
<td>Orientation info from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.flash"></a>flash</code></em>;</span></p></td>
<td>Flash info from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.metering-mode"></a>metering_mode</code></em>;</span></p></td>
<td>Metering mode from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.exposure-time"></a>exposure_time</code></em>;</span></p></td>
<td>Exposure time from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.fnumber"></a>fnumber</code></em>;</span></p></td>
<td>Focal ratio from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.focal-length"></a>focal_length</code></em>;</span></p></td>
<td>Focal length from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.iso-speed-ratings"></a>iso_speed_ratings</code></em>;</span></p></td>
<td>ISO speed ratings from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.white-balance"></a>white_balance</code></em>;</span></p></td>
<td>White balance info from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.copyright"></a>copyright</code></em>;</span></p></td>
<td>Copyright info from the EXIF data.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.rating"></a>rating</code></em>;</span></p></td>
<td>Rating.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.address"></a>address</code></em>;</span></p></td>
<td>Address.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.country"></a>country</code></em>;</span></p></td>
<td>Country.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.state"></a>state</code></em>;</span></p></td>
<td>State.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.city"></a>city</code></em>;</span></p></td>
<td>City.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.gps-altitude"></a>gps_altitude</code></em>;</span></p></td>
<td>GPS altitude.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.gps-altitude-ref"></a>gps_altitude_ref</code></em>;</span></p></td>
<td>GPS altitude reference.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.gps-latitude"></a>gps_latitude</code></em>;</span></p></td>
<td>GPS latitude.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.gps-longitude"></a>gps_longitude</code></em>;</span></p></td>
<td>GPS longitude.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpData.gps-direction"></a>gps_direction</code></em>;</span></p></td>
<td>GPS direction information.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Singly-Linked-Lists.html#GSList"><span class="type">GSList</span></a> *<em class="structfield"><code><a name="TrackerXmpData.regions"></a>regions</code></em>;</span></p></td>
<td>List of <a class="link" href="libtracker-extract-XMP.html#TrackerXmpRegion" title="TrackerXmpRegion"><span class="type">TrackerXmpRegion</span></a> items.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="TrackerXmpRegion"></a><h3>TrackerXmpRegion</h3>
<pre class="programlisting">typedef struct {
gchar *title;
gchar *description;
gchar *type;
gchar *x;
gchar *y;
gchar *width;
gchar *height;
gchar *link_class;
gchar *link_uri;
} TrackerXmpRegion;
</pre>
<p>
Structure defining data of a given region in a <a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.title"></a>title</code></em>;</span></p></td>
<td>Title of the region.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.description"></a>description</code></em>;</span></p></td>
<td>Description of the region.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.type"></a>type</code></em>;</span></p></td>
<td>Type of the region.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.x"></a>x</code></em>;</span></p></td>
<td>X axis position.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.y"></a>y</code></em>;</span></p></td>
<td>Y axis position.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.width"></a>width</code></em>;</span></p></td>
<td>Width.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.height"></a>height</code></em>;</span></p></td>
<td>Height.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.link-class"></a>link_class</code></em>;</span></p></td>
<td>Link class.</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="TrackerXmpRegion.link-uri"></a>link_uri</code></em>;</span></p></td>
<td>Link URI.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="tracker-xmp-new"></a><h3>tracker_xmp_new ()</h3>
<pre class="programlisting"><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="returnvalue">TrackerXmpData</span></a> * tracker_xmp_new (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *buffer</code></em>,
<em class="parameter"><code><span class="type">gsize</span> len</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>);</pre>
<p>
This function takes <em class="parameter"><code>len</code></em> bytes of <em class="parameter"><code>buffer</code></em> and runs it through the
XMP library.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>a chunk of data with xmp data in it.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>the size of <em class="parameter"><code>buffer</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td>the URI this is related to.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> struct if XMP data was
found, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> otherwise. Free the returned struct with <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-free" title="tracker_xmp_free ()"><code class="function">tracker_xmp_free()</code></a>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10</p>
</div>
<hr>
<div class="refsect2">
<a name="tracker-xmp-free"></a><h3>tracker_xmp_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> tracker_xmp_free (<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);</pre>
<p>
Frees <em class="parameter"><code>data</code></em> and all <a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> members. <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> will produce a
a warning.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>a <a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> struct</td>
</tr></tbody>
</table></div>
<p class="since">Since 0.10</p>
</div>
<hr>
<div class="refsect2">
<a name="tracker-xmp-read"></a><h3>tracker_xmp_read ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> tracker_xmp_read (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *buffer</code></em>,
<em class="parameter"><code><span class="type">size_t</span> len</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">tracker_xmp_read</code> is deprecated and should not be used in newly-written code. 0.9. Use <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-new" title="tracker_xmp_new ()"><code class="function">tracker_xmp_new()</code></a> instead.</p>
</div>
<p>
This function takes <em class="parameter"><code>len</code></em> bytes of <em class="parameter"><code>buffer</code></em> and runs it through the
XMP library. The result is that <em class="parameter"><code>data</code></em> is populated with the XMP
data found in <em class="parameter"><code>uri</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>a chunk of data with xmp data in it.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>the size of <em class="parameter"><code>buffer</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td>the URI this is related to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>a pointer to a TrackerXmpData structure to populate.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the <em class="parameter"><code>data</code></em> was populated successfully, otherwise
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.8</p>
</div>
<hr>
<div class="refsect2">
<a name="tracker-xmp-apply"></a><h3>tracker_xmp_apply ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> tracker_xmp_apply (<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *preupdate</code></em>,
<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *metadata</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *graph</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Strings.html#GString"><span class="type">GString</span></a> *where</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);</pre>
<p>
This function applies all data in <em class="parameter"><code>data</code></em> to <em class="parameter"><code>metadata</code></em>.
</p>
<p>
The <em class="parameter"><code>graph</code></em> parameter was added in 0.12.
</p>
<p>
This function also calls <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-apply-regions" title="tracker_xmp_apply_regions ()"><code class="function">tracker_xmp_apply_regions()</code></a>, so there is
no need to call both functions.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>preupdate</code></em> :</span></p></td>
<td>the preupdate object to apply XMP data to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>metadata</code></em> :</span></p></td>
<td>the metadata object to apply XMP data to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>graph</code></em> :</span></p></td>
<td>the graph to apply XMP data to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>where</code></em> :</span></p></td>
<td>the where object.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td>the URI this is related to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>the data to push into <em class="parameter"><code>metadata</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the <em class="parameter"><code>data</code></em> was applied to <em class="parameter"><code>metadata</code></em> successfully,
otherwise <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.8</p>
</div>
<hr>
<div class="refsect2">
<a name="tracker-xmp-apply-regions"></a><h3>tracker_xmp_apply_regions ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> tracker_xmp_apply_regions (<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *preupdate</code></em>,
<em class="parameter"><code><span class="type">TrackerSparqlBuilder</span> *metadata</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *graph</code></em>,
<em class="parameter"><code><a class="link" href="libtracker-extract-XMP.html#TrackerXmpData" title="TrackerXmpData"><span class="type">TrackerXmpData</span></a> *data</code></em>);</pre>
<p>
This function applies all regional <em class="parameter"><code>data</code></em> to <em class="parameter"><code>preupdate</code></em> and
<em class="parameter"><code>metadata</code></em>. Regional data exists for image formats like JPEG, PNG,
etc. where parts of the image refer to areas of interest. This can
be people's faces, places to focus, barcodes, etc. The regional
data describes the title, height, width, X, Y and can occur
multiple times in a given file.
</p>
<p>
This data usually is standardized between image formats and that's
what makes this function different to <a class="link" href="libtracker-extract-XMP.html#tracker-xmp-apply" title="tracker_xmp_apply ()"><code class="function">tracker_xmp_apply()</code></a> which is
useful for XMP files only.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>preupdate</code></em> :</span></p></td>
<td>the preupdate object to apply XMP data to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>metadata</code></em> :</span></p></td>
<td>the metadata object to apply XMP data to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>graph</code></em> :</span></p></td>
<td>the graph to apply XMP data to.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>the data to push into <em class="parameter"><code>preupdate</code></em> and <em class="parameter"><code>metadata</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the <em class="parameter"><code>data</code></em> was applied to <em class="parameter"><code>preupdate</code></em> and <em class="parameter"><code>metadata</code></em>
successfully, otherwise <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.12</p>
</div>
</div>
</div>
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