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| <a href="#gstreamer-plugins-queue.synopsis" class="shortcut">Top</a> |
| | |
| <a href="#gstreamer-plugins-queue.description" class="shortcut">Description</a> |
| | |
| <a href="#gstreamer-plugins-queue.object-hierarchy" class="shortcut">Object Hierarchy</a> |
| | |
| <a href="#gstreamer-plugins-queue.properties" class="shortcut">Properties</a> |
| | |
| <a href="#gstreamer-plugins-queue.signals" class="shortcut">Signals</a> |
| </td></tr> |
| </table> |
| <div class="refentry"> |
| <a name="gstreamer-plugins-queue"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gstreamer-plugins-queue.top_of_page"></a>queue</span></h2> |
| <p>queue — Simple data queue</p> |
| </td> |
| <td valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsynopsisdiv"> |
| <a name="gstreamer-plugins-queue.synopsis"></a><h2>Synopsis</h2> |
| <a name="GstQueue"></a><pre class="synopsis">struct <a class="link" href="gstreamer-plugins-queue.html#GstQueue-struct" title="struct GstQueue">GstQueue</a>; |
| enum <a class="link" href="gstreamer-plugins-queue.html#GstQueueLeaky" title="enum GstQueueLeaky">GstQueueLeaky</a>; |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="synopsis"> |
| <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| +----<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> |
| +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a> |
| +----GstQueue |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.properties"></a><h2>Properties</h2> |
| <pre class="synopsis"> |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--current-level-buffers" title='The "current-level-buffers" property'>current-level-buffers</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--current-level-bytes" title='The "current-level-bytes" property'>current-level-bytes</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--current-level-time" title='The "current-level-time" property'>current-level-time</a>" <span class="type">guint64</span> : Read |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--flush-on-eos" title='The "flush-on-eos" property'>flush-on-eos</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--leaky" title='The "leaky" property'>leaky</a>" <a class="link" href="gstreamer-plugins-queue.html#GstQueueLeaky" title="enum GstQueueLeaky"><span class="type">GstQueueLeaky</span></a> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--max-size-buffers" title='The "max-size-buffers" property'>max-size-buffers</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--max-size-bytes" title='The "max-size-bytes" property'>max-size-bytes</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--max-size-time" title='The "max-size-time" property'>max-size-time</a>" <span class="type">guint64</span> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--min-threshold-buffers" title='The "min-threshold-buffers" property'>min-threshold-buffers</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--min-threshold-bytes" title='The "min-threshold-bytes" property'>min-threshold-bytes</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--min-threshold-time" title='The "min-threshold-time" property'>min-threshold-time</a>" <span class="type">guint64</span> : Read / Write |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue--silent" title='The "silent" property'>silent</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.signals"></a><h2>Signals</h2> |
| <pre class="synopsis"> |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue-overrun" title='The "overrun" signal'>overrun</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a> |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue-pushing" title='The "pushing" signal'>pushing</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a> |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue-running" title='The "running" signal'>running</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a> |
| "<a class="link" href="gstreamer-plugins-queue.html#GstQueue-underrun" title='The "underrun" signal'>underrun</a>" : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.description"></a><h2>Description</h2> |
| <p> |
| Data is queued until one of the limits specified by the |
| <a class="link" href="gstreamer-plugins-queue.html#GstQueue--max-size-buffers" title='The "max-size-buffers" property'><span class="type">"max-size-buffers"</span></a>, <a class="link" href="gstreamer-plugins-queue.html#GstQueue--max-size-bytes" title='The "max-size-bytes" property'><span class="type">"max-size-bytes"</span></a> and/or |
| <a class="link" href="gstreamer-plugins-queue.html#GstQueue--max-size-time" title='The "max-size-time" property'><span class="type">"max-size-time"</span></a> properties has been reached. Any attempt to push |
| more buffers into the queue will block the pushing thread until more space |
| becomes available. |
| </p> |
| <p> |
| The queue will create a new thread on the source pad to decouple the |
| processing on sink and source pad. |
| </p> |
| <p> |
| You can query how many buffers are queued by reading the |
| <a class="link" href="gstreamer-plugins-queue.html#GstQueue--current-level-buffers" title='The "current-level-buffers" property'><span class="type">"current-level-buffers"</span></a> property. You can track changes |
| by connecting to the notify::current-level-buffers signal (which |
| like all signals will be emitted from the streaming thread). The same |
| applies to the <a class="link" href="gstreamer-plugins-queue.html#GstQueue--current-level-time" title='The "current-level-time" property'><span class="type">"current-level-time"</span></a> and |
| <a class="link" href="gstreamer-plugins-queue.html#GstQueue--current-level-bytes" title='The "current-level-bytes" property'><span class="type">"current-level-bytes"</span></a> properties. |
| </p> |
| <p> |
| The default queue size limits are 200 buffers, 10MB of data, or |
| one second worth of data, whichever is reached first. |
| </p> |
| <p> |
| As said earlier, the queue blocks by default when one of the specified |
| maximums (bytes, time, buffers) has been reached. You can set the |
| <a class="link" href="gstreamer-plugins-queue.html#GstQueue--leaky" title='The "leaky" property'><span class="type">"leaky"</span></a> property to specify that instead of blocking it should |
| leak (drop) new or old buffers. |
| </p> |
| <p> |
| The <a class="link" href="gstreamer-plugins-queue.html#GstQueue-underrun" title='The "underrun" signal'><span class="type">"underrun"</span></a> signal is emitted when the queue has less data than |
| the specified minimum thresholds require (by default: when the queue is |
| empty). The <a class="link" href="gstreamer-plugins-queue.html#GstQueue-overrun" title='The "overrun" signal'><span class="type">"overrun"</span></a> signal is emitted when the queue is filled |
| up. Both signals are emitted from the context of the streaming thread. |
| </p> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="idp61213488"></a><h3>Element Information</h3> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">plugin</span></p></td> |
| <td> |
| <a class="link" href="gstreamer-plugins-plugin-coreelements.html#plugin-coreelements">coreelements</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Erik Walthinsen <omega@cse.ogi.edu></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Generic</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="idp61220944"></a><h3>Element Pads</h3> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">name</span></p></td> |
| <td>sink</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">direction</span></p></td> |
| <td>sink</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">presence</span></p></td> |
| <td>always</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">details</span></p></td> |
| <td>ANY</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">name</span></p></td> |
| <td>src</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">direction</span></p></td> |
| <td>source</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">presence</span></p></td> |
| <td>always</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">details</span></p></td> |
| <td>ANY</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <p> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.details"></a><h2>Details</h2> |
| <div class="refsect2"> |
| <a name="GstQueue-struct"></a><h3>struct GstQueue</h3> |
| <pre class="programlisting">struct GstQueue;</pre> |
| <p> |
| Opaque <a class="link" href="gstreamer-plugins-queue.html#GstQueue"><span class="type">GstQueue</span></a> structure. |
| </p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueueLeaky"></a><h3>enum GstQueueLeaky</h3> |
| <pre class="programlisting">enum GstQueueLeaky { |
| GST_QUEUE_NO_LEAK = 0, |
| GST_QUEUE_LEAK_UPSTREAM = 1, |
| GST_QUEUE_LEAK_DOWNSTREAM = 2 |
| }; |
| </pre> |
| <p> |
| Buffer dropping scheme to avoid the queue to block when full. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><a name="GST-QUEUE-NO-LEAK:CAPS"></a><span class="term"><code class="literal">GST_QUEUE_NO_LEAK</code></span></p></td> |
| <td>Not Leaky |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-QUEUE-LEAK-UPSTREAM:CAPS"></a><span class="term"><code class="literal">GST_QUEUE_LEAK_UPSTREAM</code></span></p></td> |
| <td>Leaky on upstream (new buffers) |
| </td> |
| </tr> |
| <tr> |
| <td><p><a name="GST-QUEUE-LEAK-DOWNSTREAM:CAPS"></a><span class="term"><code class="literal">GST_QUEUE_LEAK_DOWNSTREAM</code></span></p></td> |
| <td>Leaky on downstream (old buffers) |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstQueue--current-level-buffers"></a><h3>The <code class="literal">"current-level-buffers"</code> property</h3> |
| <pre class="programlisting"> "current-level-buffers" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read</pre> |
| <p>Current number of buffers in the queue.</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--current-level-bytes"></a><h3>The <code class="literal">"current-level-bytes"</code> property</h3> |
| <pre class="programlisting"> "current-level-bytes" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read</pre> |
| <p>Current amount of data in the queue (bytes).</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--current-level-time"></a><h3>The <code class="literal">"current-level-time"</code> property</h3> |
| <pre class="programlisting"> "current-level-time" <span class="type">guint64</span> : Read</pre> |
| <p>Current amount of data in the queue (in ns).</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--flush-on-eos"></a><h3>The <code class="literal">"flush-on-eos"</code> property</h3> |
| <pre class="programlisting"> "flush-on-eos" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre> |
| <p> |
| Discard all data in the queue when an EOS event is received, and pass |
| on the EOS event as soon as possible (instead of waiting until all |
| buffers in the queue have been processed, which is the default behaviour). |
| </p> |
| <p> |
| Flushing the queue on EOS might be useful when capturing and encoding |
| from a live source, to finish up the recording quickly in cases when |
| the encoder is slow. Note that this might mean some data from the end of |
| the recoding data might be lost though (never more than the configured |
| max. sizes though). |
| </p> |
| <p>Default value: FALSE</p> |
| <p class="since">Since 1.2</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--leaky"></a><h3>The <code class="literal">"leaky"</code> property</h3> |
| <pre class="programlisting"> "leaky" <a class="link" href="gstreamer-plugins-queue.html#GstQueueLeaky" title="enum GstQueueLeaky"><span class="type">GstQueueLeaky</span></a> : Read / Write</pre> |
| <p>Where the queue leaks, if at all.</p> |
| <p>Default value: Not Leaky</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--max-size-buffers"></a><h3>The <code class="literal">"max-size-buffers"</code> property</h3> |
| <pre class="programlisting"> "max-size-buffers" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write</pre> |
| <p>Max. number of buffers in the queue (0=disable).</p> |
| <p>Default value: 200</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--max-size-bytes"></a><h3>The <code class="literal">"max-size-bytes"</code> property</h3> |
| <pre class="programlisting"> "max-size-bytes" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write</pre> |
| <p>Max. amount of data in the queue (bytes, 0=disable).</p> |
| <p>Default value: 10485760</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--max-size-time"></a><h3>The <code class="literal">"max-size-time"</code> property</h3> |
| <pre class="programlisting"> "max-size-time" <span class="type">guint64</span> : Read / Write</pre> |
| <p>Max. amount of data in the queue (in ns, 0=disable).</p> |
| <p>Default value: 1000000000</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--min-threshold-buffers"></a><h3>The <code class="literal">"min-threshold-buffers"</code> property</h3> |
| <pre class="programlisting"> "min-threshold-buffers" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write</pre> |
| <p>Min. number of buffers in the queue to allow reading (0=disable).</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--min-threshold-bytes"></a><h3>The <code class="literal">"min-threshold-bytes"</code> property</h3> |
| <pre class="programlisting"> "min-threshold-bytes" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write</pre> |
| <p>Min. amount of data in the queue to allow reading (bytes, 0=disable).</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--min-threshold-time"></a><h3>The <code class="literal">"min-threshold-time"</code> property</h3> |
| <pre class="programlisting"> "min-threshold-time" <span class="type">guint64</span> : Read / Write</pre> |
| <p>Min. amount of data in the queue to allow reading (in ns, 0=disable).</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue--silent"></a><h3>The <code class="literal">"silent"</code> property</h3> |
| <pre class="programlisting"> "silent" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre> |
| <p> |
| Don't emit queue signals. Makes queues more lightweight if no signals are |
| needed. |
| </p> |
| <p>Default value: FALSE</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue.signal-details"></a><h2>Signal Details</h2> |
| <div class="refsect2"> |
| <a name="GstQueue-overrun"></a><h3>The <code class="literal">"overrun"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gstreamer-plugins-queue.html#GstQueue"><span class="type">GstQueue</span></a> *queue, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a></pre> |
| <p> |
| Reports that the buffer became full (overrun). |
| A buffer is full if the total amount of data inside it (num-buffers, time, |
| size) is higher than the boundary values which can be set through the |
| GObject properties. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>queue</code></em> :</span></p></td> |
| <td>the queue instance</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue-pushing"></a><h3>The <code class="literal">"pushing"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gstreamer-plugins-queue.html#GstQueue"><span class="type">GstQueue</span></a> *queue, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a></pre> |
| <p> |
| Reports when the queue has enough data to start pushing data again on the |
| source pad. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>queue</code></em> :</span></p></td> |
| <td>the queue instance</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue-running"></a><h3>The <code class="literal">"running"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gstreamer-plugins-queue.html#GstQueue"><span class="type">GstQueue</span></a> *queue, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a></pre> |
| <p> |
| Reports that enough (min-threshold) data is in the queue. Use this signal |
| together with the underrun signal to pause the pipeline on underrun and |
| wait for the queue to fill-up before resume playback. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>queue</code></em> :</span></p></td> |
| <td>the queue instance</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue-underrun"></a><h3>The <code class="literal">"underrun"</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gstreamer-plugins-queue.html#GstQueue"><span class="type">GstQueue</span></a> *queue, |
| <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a></pre> |
| <p> |
| Reports that the buffer became empty (underrun). |
| A buffer is empty if the total amount of data inside it (num-buffers, time, |
| size) is lower than the boundary values which can be set through the |
| GObject properties. |
| </p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>queue</code></em> :</span></p></td> |
| <td>the queue instance</td> |
| </tr> |
| <tr> |
| <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td> |
| <td>user data set when the signal handler was connected.</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr> |
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| </body> |
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