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<a name="gstreamer-libs-GstDataQueue"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gstreamer-libs-GstDataQueue.top_of_page"></a>GstDataQueue</span></h2>
<p>GstDataQueue — Threadsafe queueing object</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gstreamer-libs-GstDataQueue.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueCheckFullFunction" title="GstDataQueueCheckFullFunction ()">*GstDataQueueCheckFullFunction</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueEmptyCallback" title="GstDataQueueEmptyCallback ()">*GstDataQueueEmptyCallback</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueFullCallback" title="GstDataQueueFullCallback ()">*GstDataQueueFullCallback</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="returnvalue">GstDataQueue</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-new" title="gst_data_queue_new ()">gst_data_queue_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-push" title="gst_data_queue_push ()">gst_data_queue_push</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-push-force" title="gst_data_queue_push_force ()">gst_data_queue_push_force</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-pop" title="gst_data_queue_pop ()">gst_data_queue_pop</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-peek" title="gst_data_queue_peek ()">gst_data_queue_peek</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-flush" title="gst_data_queue_flush ()">gst_data_queue_flush</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-set-flushing" title="gst_data_queue_set_flushing ()">gst_data_queue_set_flushing</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-drop-head" title="gst_data_queue_drop_head ()">gst_data_queue_drop_head</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-is-full" title="gst_data_queue_is_full ()">gst_data_queue_is_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-is-empty" title="gst_data_queue_is_empty ()">gst_data_queue_is_empty</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-get-level" title="gst_data_queue_get_level ()">gst_data_queue_get_level</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-limits-changed" title="gst_data_queue_limits_changed ()">gst_data_queue_limits_changed</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-libs-GstDataQueue.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue">GstDataQueue</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueSize" title="struct GstDataQueueSize">GstDataQueueSize</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem">GstDataQueueItem</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-libs-GstDataQueue.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/base/gstdataqueue.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-libs-GstDataQueue.description"></a><h2>Description</h2>
<p><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> is an object that handles threadsafe queueing of objects. It
also provides size-related functionality. This object should be used for
any <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html"><span class="type">GstElement</span></a> that wishes to provide some sort of queueing functionality.</p>
</div>
<div class="refsect1">
<a name="gstreamer-libs-GstDataQueue.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GstDataQueueCheckFullFunction"></a><h3>GstDataQueueCheckFullFunction ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*GstDataQueueCheckFullFunction<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> visible</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> bytes</code></em>,
<em class="parameter"><code><span class="type">guint64</span> time</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> checkdata</code></em>);</pre>
<p>The prototype of the function used to inform the queue that it should be
considered as full.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.2.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>visible</p></td>
<td class="parameter_description"><p>The number of visible items currently in the queue.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>bytes</p></td>
<td class="parameter_description"><p>The amount of bytes currently in the queue.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>time</p></td>
<td class="parameter_description"><p>The accumulated duration of the items currently in the queue.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>checkdata</p></td>
<td class="parameter_description"><p>The <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> registered when the <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> was created.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.2.7"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the queue should be considered full.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstDataQueueEmptyCallback"></a><h3>GstDataQueueEmptyCallback ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*GstDataQueueEmptyCallback<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> checkdata</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="GstDataQueueFullCallback"></a><h3>GstDataQueueFullCallback ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*GstDataQueueFullCallback<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> checkdata</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-new"></a><h3>gst_data_queue_new ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="returnvalue">GstDataQueue</span></a> *
gst_data_queue_new (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueCheckFullFunction" title="GstDataQueueCheckFullFunction ()"><span class="type">GstDataQueueCheckFullFunction</span></a> checkfull</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueFullCallback" title="GstDataQueueFullCallback ()"><span class="type">GstDataQueueFullCallback</span></a> fullcallback</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueEmptyCallback" title="GstDataQueueEmptyCallback ()"><span class="type">GstDataQueueEmptyCallback</span></a> emptycallback</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> checkdata</code></em>);</pre>
<p>Creates a new <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>. If <em class="parameter"><code>fullcallback</code></em>
or <em class="parameter"><code>emptycallback</code></em>
are supplied, then
the <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> will call the respective callback to signal full or empty condition.
If the callbacks are NULL the <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> will instead emit 'full' and 'empty'
signals.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.5.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>checkfull</p></td>
<td class="parameter_description"><p>the callback used to tell if the element considers the queue full
or not.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>fullcallback</p></td>
<td class="parameter_description"><p>the callback which will be called when the queue is considered full.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>emptycallback</p></td>
<td class="parameter_description"><p>the callback which will be called when the queue is considered empty.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>checkdata</p></td>
<td class="parameter_description"><p>a <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> that will be passed to the <em class="parameter"><code>checkfull</code></em>
, <em class="parameter"><code>fullcallback</code></em>
,
and <em class="parameter"><code>emptycallback</code></em>
callbacks.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.5.7"></a><h4>Returns</h4>
<p> a new <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-push"></a><h3>gst_data_queue_push ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_push (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> *item</code></em>);</pre>
<p>Pushes a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> (or a structure that begins with the same fields)
on the <em class="parameter"><code>queue</code></em>
. If the <em class="parameter"><code>queue</code></em>
is full, the call will block until space is
available, OR the <em class="parameter"><code>queue</code></em>
is set to flushing state.
MT safe.</p>
<p>Note that this function has slightly different semantics than <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-push"><code class="function">gst_pad_push()</code></a>
and <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-push-event"><code class="function">gst_pad_push_event()</code></a>: this function only takes ownership of <em class="parameter"><code>item</code></em>
and
the <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMiniObject.html#GstMiniObject"><span class="type">GstMiniObject</span></a> contained in <em class="parameter"><code>item</code></em>
if the push was successful. If <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>
is returned, the caller is responsible for freeing <em class="parameter"><code>item</code></em>
and its contents.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.6.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.6.8"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the <em class="parameter"><code>item</code></em>
was successfully pushed on the <em class="parameter"><code>queue</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-push-force"></a><h3>gst_data_queue_push_force ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_push_force (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> *item</code></em>);</pre>
<p>Pushes a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> (or a structure that begins with the same fields)
on the <em class="parameter"><code>queue</code></em>
. It ignores if the <em class="parameter"><code>queue</code></em>
is full or not and forces the <em class="parameter"><code>item</code></em>
to be pushed anyway.
MT safe.</p>
<p>Note that this function has slightly different semantics than <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-push"><code class="function">gst_pad_push()</code></a>
and <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPad.html#gst-pad-push-event"><code class="function">gst_pad_push_event()</code></a>: this function only takes ownership of <em class="parameter"><code>item</code></em>
and
the <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMiniObject.html#GstMiniObject"><span class="type">GstMiniObject</span></a> contained in <em class="parameter"><code>item</code></em>
if the push was successful. If <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>
is returned, the caller is responsible for freeing <em class="parameter"><code>item</code></em>
and its contents.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.7.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.7.8"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the <em class="parameter"><code>item</code></em>
was successfully pushed on the <em class="parameter"><code>queue</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-pop"></a><h3>gst_data_queue_pop ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_pop (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> **item</code></em>);</pre>
<p>Retrieves the first <em class="parameter"><code>item</code></em>
available on the <em class="parameter"><code>queue</code></em>
. If the queue is currently
empty, the call will block until at least one item is available, OR the
<em class="parameter"><code>queue</code></em>
is set to the flushing state.
MT safe.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.8.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item</p></td>
<td class="parameter_description"><p>pointer to store the returned <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.8.7"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if an <em class="parameter"><code>item</code></em>
was successfully retrieved from the <em class="parameter"><code>queue</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-peek"></a><h3>gst_data_queue_peek ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_peek (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> **item</code></em>);</pre>
<p>Retrieves the first <em class="parameter"><code>item</code></em>
available on the <em class="parameter"><code>queue</code></em>
without removing it.
If the queue is currently empty, the call will block until at least
one item is available, OR the <em class="parameter"><code>queue</code></em>
is set to the flushing state.
MT safe.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.9.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>item</p></td>
<td class="parameter_description"><p>pointer to store the returned <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.9.7"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if an <em class="parameter"><code>item</code></em>
was successfully retrieved from the <em class="parameter"><code>queue</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-flush"></a><h3>gst_data_queue_flush ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_data_queue_flush (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>);</pre>
<p>Flushes all the contents of the <em class="parameter"><code>queue</code></em>
. Any call to <a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-push" title="gst_data_queue_push ()"><span class="type">gst_data_queue_push</span></a> and
<a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-pop" title="gst_data_queue_pop ()"><span class="type">gst_data_queue_pop</span></a> will be released.
MT safe.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.10.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-set-flushing"></a><h3>gst_data_queue_set_flushing ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_data_queue_set_flushing (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> flushing</code></em>);</pre>
<p>Sets the queue to flushing state if <em class="parameter"><code>flushing</code></em>
is <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>. If set to flushing
state, any incoming data on the <em class="parameter"><code>queue</code></em>
will be discarded. Any call currently
blocking on <a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-push" title="gst_data_queue_push ()"><span class="type">gst_data_queue_push</span></a> or <a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-pop" title="gst_data_queue_pop ()"><span class="type">gst_data_queue_pop</span></a> will return straight
away with a return value of <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>. While the <em class="parameter"><code>queue</code></em>
is in flushing state,
all calls to those two functions will return <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<p>MT Safe.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.11.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flushing</p></td>
<td class="parameter_description"><p>a <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> stating if the queue will be flushing or not.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-drop-head"></a><h3>gst_data_queue_drop_head ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_drop_head (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre>
<p>Pop and unref the head-most <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMiniObject.html#GstMiniObject"><span class="type">GstMiniObject</span></a> with the given <a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a>.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.12.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>The <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> to drop an item from.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>type</p></td>
<td class="parameter_description"><p>The <a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> of the item to drop.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.12.7"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if an element was removed.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-is-full"></a><h3>gst_data_queue_is_full ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_is_full (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>);</pre>
<p>Queries if <em class="parameter"><code>queue</code></em>
is full. This check will be done using the
<a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueCheckFullFunction" title="GstDataQueueCheckFullFunction ()"><span class="type">GstDataQueueCheckFullFunction</span></a> registered with <em class="parameter"><code>queue</code></em>
.
MT safe.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.13.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.13.7"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>queue</code></em>
is full.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-is-empty"></a><h3>gst_data_queue_is_empty ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_data_queue_is_empty (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>);</pre>
<p>Queries if there are any items in the <em class="parameter"><code>queue</code></em>
.
MT safe.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.14.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>a <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.15.7.14.7"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>queue</code></em>
is empty.</p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-get-level"></a><h3>gst_data_queue_get_level ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_data_queue_get_level (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>,
<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueSize" title="struct GstDataQueueSize"><span class="type">GstDataQueueSize</span></a> *level</code></em>);</pre>
<p>Get the current level of the queue.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.15.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>The <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>level</p></td>
<td class="parameter_description"><p>the location to store the result</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gst-data-queue-limits-changed"></a><h3>gst_data_queue_limits_changed ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_data_queue_limits_changed (<em class="parameter"><code><a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> *queue</code></em>);</pre>
<p>Inform the queue that the limits for the fullness check have changed and that
any blocking <a class="link" href="gstreamer-libs-GstDataQueue.html#gst-data-queue-push" title="gst_data_queue_push ()"><code class="function">gst_data_queue_push()</code></a> should be unblocked to recheck the limits.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="id-1.2.4.15.7.16.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>queue</p></td>
<td class="parameter_description"><p>The <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-1.2">1.2</a></p>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-libs-GstDataQueue.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstDataQueue"></a><h3>struct GstDataQueue</h3>
<pre class="programlisting">struct GstDataQueue {
GObject object;
};
</pre>
<p>Opaque <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a> structure.</p>
<div class="refsect3">
<a name="id-1.2.4.15.8.2.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject"><span class="type">GObject</span></a> <em class="structfield"><code><a name="GstDataQueue.object"></a>object</code></em>;</p></td>
<td class="struct_member_description"><p>the parent structure</p></td>
<td class="struct_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstDataQueueSize"></a><h3>struct GstDataQueueSize</h3>
<pre class="programlisting">struct GstDataQueueSize {
guint visible;
guint bytes;
guint64 time;
};
</pre>
<p>Structure describing the size of a queue.</p>
<div class="refsect3">
<a name="id-1.2.4.15.8.3.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstDataQueueSize.visible"></a>visible</code></em>;</p></td>
<td class="struct_member_description"><p>number of buffers</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstDataQueueSize.bytes"></a>bytes</code></em>;</p></td>
<td class="struct_member_description"><p>number of bytes</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><span class="type">guint64</span> <em class="structfield"><code><a name="GstDataQueueSize.time"></a>time</code></em>;</p></td>
<td class="struct_member_description"><p>amount of time</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstDataQueueItem"></a><h3>struct GstDataQueueItem</h3>
<pre class="programlisting">struct GstDataQueueItem {
GstMiniObject *object;
guint size;
guint64 duration;
gboolean visible;
/* user supplied destroy function */
GDestroyNotify destroy;
};
</pre>
<p>Structure used by <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueue" title="struct GstDataQueue"><span class="type">GstDataQueue</span></a>. You can supply a different structure, as
long as the top of the structure is identical to this structure.</p>
<div class="refsect3">
<a name="id-1.2.4.15.8.4.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMiniObject.html#GstMiniObject"><span class="type">GstMiniObject</span></a> *<em class="structfield"><code><a name="GstDataQueueItem.object"></a>object</code></em>;</p></td>
<td class="struct_member_description"><p>the <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMiniObject.html#GstMiniObject"><span class="type">GstMiniObject</span></a> to queue.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstDataQueueItem.size"></a>size</code></em>;</p></td>
<td class="struct_member_description"><p>the size in bytes of the miniobject.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><span class="type">guint64</span> <em class="structfield"><code><a name="GstDataQueueItem.duration"></a>duration</code></em>;</p></td>
<td class="struct_member_description"><p>the duration in <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> of the miniobject. Can not be
<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><code class="literal">GST_CLOCK_TIME_NONE</code></a>.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> <em class="structfield"><code><a name="GstDataQueueItem.visible"></a>visible</code></em>;</p></td>
<td class="struct_member_description"><p><a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>object</code></em>
should be considered as a visible object.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> <em class="structfield"><code><a name="GstDataQueueItem.destroy"></a>destroy</code></em>;</p></td>
<td class="struct_member_description"><p>The <a href="https://developer.gnome.org/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> function to use to free the <a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a>.
This function should also drop the reference to <em class="parameter"><code>object</code></em>
the owner of the
<a class="link" href="gstreamer-libs-GstDataQueue.html#GstDataQueueItem" title="struct GstDataQueueItem"><span class="type">GstDataQueueItem</span></a> is assumed to hold.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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