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<a href="#gstreamer-GstTypeFind.description" class="shortcut">Description</a>
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<div class="refentry">
<a name="gstreamer-GstTypeFind"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gstreamer-GstTypeFind.top_of_page"></a>GstTypeFind</span></h2>
<p>GstTypeFind — Stream type detection</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gstreamer-GstTypeFind.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/gst.h>
struct <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind">GstTypeFind</a>;
<span class="returnvalue">void</span> (<a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()">*GstTypeFindFunction</a>) (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);
enum <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindProbability" title="enum GstTypeFindProbability">GstTypeFindProbability</a>;
const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a> * <a class="link" href="gstreamer-GstTypeFind.html#gst-type-find-peek" title="gst_type_find_peek ()">gst_type_find_peek</a> (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> offset</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> size</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstTypeFind.html#gst-type-find-suggest" title="gst_type_find_suggest ()">gst_type_find_suggest</a> (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> probability</code></em>,
<em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gstreamer-GstTypeFind.html#gst-type-find-suggest-simple" title="gst_type_find_suggest_simple ()">gst_type_find_suggest_simple</a> (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> probability</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *media_type</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *fieldname</code></em>,
<em class="parameter"><code>...</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint64"><span class="returnvalue">guint64</span></a> <a class="link" href="gstreamer-GstTypeFind.html#gst-type-find-get-length" title="gst_type_find_get_length ()">gst_type_find_get_length</a> (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gstreamer-GstTypeFind.html#gst-type-find-register" title="gst_type_find_register ()">gst_type_find_register</a> (<em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rank</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> func</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> **extensions</code></em>,
<em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *possible_caps</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> data_notify</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-GstTypeFind.description"></a><h2>Description</h2>
<p>
The following functions allow you to detect the media type of an unknown
stream.
</p>
<p>
Last reviewed on 2005-11-09 (0.9.4)
</p>
</div>
<div class="refsect1">
<a name="gstreamer-GstTypeFind.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstTypeFind"></a><h3>struct GstTypeFind</h3>
<pre class="programlisting">struct GstTypeFind {
/* private to the caller of the typefind function */
const guint8 * (* peek) (gpointer data,
gint64 offset,
guint size);
void (* suggest) (gpointer data,
guint probability,
const GstCaps * caps);
gpointer data;
/* optional */
guint64 (* get_length) (gpointer data);
};
</pre>
<p>
Object that stores typefind callbacks. To use with <a class="link" href="GstTypeFindFactory.html" title="GstTypeFindFactory"><span class="type">GstTypeFindFactory</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTypeFind.peek"></a>peek</code></em> ()</span></p></td>
<td>Method to peek data.</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTypeFind.suggest"></a>suggest</code></em> ()</span></p></td>
<td>Method to suggest <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> with a given probability.</td>
</tr>
<tr>
<td><p><span class="term"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> <em class="structfield"><code><a name="GstTypeFind.data"></a>data</code></em>;</span></p></td>
<td>The data used by the caller of the typefinding function.</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTypeFind.get-length"></a>get_length</code></em> ()</span></p></td>
<td>Returns the length of current data.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstTypeFindFunction"></a><h3>GstTypeFindFunction ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> (*GstTypeFindFunction) (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);</pre>
<p>
A function that will be called by typefinding.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>find</code></em> :</span></p></td>
<td>A <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> structure</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>optionnal data to pass to the function</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstTypeFindProbability"></a><h3>enum GstTypeFindProbability</h3>
<pre class="programlisting">typedef enum {
GST_TYPE_FIND_NONE = 0,
GST_TYPE_FIND_MINIMUM = 1,
GST_TYPE_FIND_POSSIBLE = 50,
GST_TYPE_FIND_LIKELY = 80,
GST_TYPE_FIND_NEARLY_CERTAIN = 99,
GST_TYPE_FIND_MAXIMUM = 100
} GstTypeFindProbability;
</pre>
<p>
The probability of the typefind function. Higher values have more certainty
in doing a reliable typefind.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><a name="GST-TYPE-FIND-NONE:CAPS"></a><span class="term"><code class="literal">GST_TYPE_FIND_NONE</code></span></p></td>
<td>type undetected. Since 0.10.36.
</td>
</tr>
<tr>
<td><p><a name="GST-TYPE-FIND-MINIMUM:CAPS"></a><span class="term"><code class="literal">GST_TYPE_FIND_MINIMUM</code></span></p></td>
<td>unlikely typefind.
</td>
</tr>
<tr>
<td><p><a name="GST-TYPE-FIND-POSSIBLE:CAPS"></a><span class="term"><code class="literal">GST_TYPE_FIND_POSSIBLE</code></span></p></td>
<td>possible type detected.
</td>
</tr>
<tr>
<td><p><a name="GST-TYPE-FIND-LIKELY:CAPS"></a><span class="term"><code class="literal">GST_TYPE_FIND_LIKELY</code></span></p></td>
<td>likely a type was detected.
</td>
</tr>
<tr>
<td><p><a name="GST-TYPE-FIND-NEARLY-CERTAIN:CAPS"></a><span class="term"><code class="literal">GST_TYPE_FIND_NEARLY_CERTAIN</code></span></p></td>
<td>nearly certain that a type was detected.
</td>
</tr>
<tr>
<td><p><a name="GST-TYPE-FIND-MAXIMUM:CAPS"></a><span class="term"><code class="literal">GST_TYPE_FIND_MAXIMUM</code></span></p></td>
<td>very certain a type was detected.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-type-find-peek"></a><h3>gst_type_find_peek ()</h3>
<pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a> * gst_type_find_peek (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> offset</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> size</code></em>);</pre>
<p>
Returns the <em class="parameter"><code>size</code></em> bytes of the stream to identify beginning at offset. If
offset is a positive number, the offset is relative to the beginning of the
stream, if offset is a negative number the offset is relative to the end of
the stream. The returned memory is valid until the typefinding function
returns and must not be freed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>find</code></em> :</span></p></td>
<td>The <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> object the function was called with</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>offset</code></em> :</span></p></td>
<td>The offset</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>size</code></em> :</span></p></td>
<td>The number of bytes to return</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the requested data, or NULL
if that data is not available. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=size]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-type-find-suggest"></a><h3>gst_type_find_suggest ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_type_find_suggest (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> probability</code></em>,
<em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>);</pre>
<p>
If a <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> calls this function it suggests the caps with the
given probability. A <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> may supply different suggestions
in one call.
It is up to the caller of the <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> to interpret these values.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>find</code></em> :</span></p></td>
<td>The <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> object the function was called with</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>probability</code></em> :</span></p></td>
<td>The probability in percent that the suggestion is right</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>The fixed <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> to suggest</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-type-find-suggest-simple"></a><h3>gst_type_find_suggest_simple ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_type_find_suggest_simple (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> probability</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *media_type</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *fieldname</code></em>,
<em class="parameter"><code>...</code></em>);</pre>
<p>
If a <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> calls this function it suggests the caps with the
given probability. A <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> may supply different suggestions
in one call. It is up to the caller of the <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> to interpret
these values.
</p>
<p>
This function is similar to <a class="link" href="gstreamer-GstTypeFind.html#gst-type-find-suggest" title="gst_type_find_suggest ()"><code class="function">gst_type_find_suggest()</code></a>, only that instead of
passing a <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> argument you can create the caps on the fly in the same
way as you can with <a class="link" href="gstreamer-GstCaps.html#gst-caps-new-simple" title="gst_caps_new_simple ()"><code class="function">gst_caps_new_simple()</code></a>.
</p>
<p>
Make sure you terminate the list of arguments with a NULL argument and that
the values passed have the correct type (in terms of width in bytes when
passed to the vararg function - this applies particularly to gdouble and
guint64 arguments).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>find</code></em> :</span></p></td>
<td>The <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> object the function was called with</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>probability</code></em> :</span></p></td>
<td>The probability in percent that the suggestion is right</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>media_type</code></em> :</span></p></td>
<td>the media type of the suggested caps</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>fieldname</code></em> :</span></p></td>
<td>first field of the suggested caps, or NULL</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td>
<td>additional arguments to the suggested caps in the same format as the
arguments passed to <a class="link" href="gstreamer-GstStructure.html#gst-structure-new" title="gst_structure_new ()"><code class="function">gst_structure_new()</code></a> (ie. triplets of field name,
field GType and field value)</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.20</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-type-find-get-length"></a><h3>gst_type_find_get_length ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint64"><span class="returnvalue">guint64</span></a> gst_type_find_get_length (<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> *find</code></em>);</pre>
<p>
Get the length of the data stream.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>find</code></em> :</span></p></td>
<td>The <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFind" title="struct GstTypeFind"><span class="type">GstTypeFind</span></a> the function was called with</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The length of the data stream, or 0 if it is not available.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-type-find-register"></a><h3>gst_type_find_register ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_type_find_register (<em class="parameter"><code><a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a> *plugin</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> rank</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> func</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> **extensions</code></em>,
<em class="parameter"><code>const <a class="link" href="gstreamer-GstCaps.html#GstCaps" title="struct GstCaps"><span class="type">GstCaps</span></a> *possible_caps</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> data_notify</code></em>);</pre>
<p>
Registers a new typefind function to be used for typefinding. After
registering this function will be available for typefinding.
This function is typically called during an element's plugin initialization.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>plugin</code></em> :</span></p></td>
<td>A <a class="link" href="GstPlugin.html" title="GstPlugin"><span class="type">GstPlugin</span></a>, or NULL for a static typefind function (note that
passing NULL only works in GStreamer 0.10.16 and later)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>The name for registering</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rank</code></em> :</span></p></td>
<td>The rank (or importance) of this typefind function</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td>
<td>The <a class="link" href="gstreamer-GstTypeFind.html#GstTypeFindFunction" title="GstTypeFindFunction ()"><span class="type">GstTypeFindFunction</span></a> to use</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>extensions</code></em> :</span></p></td>
<td>Optional extensions that could belong to this type. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> utf8]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>possible_caps</code></em> :</span></p></td>
<td>Optionally the caps that could be returned when typefinding
succeeds</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>Optional user data. This user data must be available until the plugin
is unloaded.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data_notify</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> that will be called on <em class="parameter"><code>data</code></em> when the plugin
is unloaded.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE otherwise</td>
</tr>
</tbody>
</table></div>
</div>
</div>
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