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| <a name="gstreamer-plugins-queue2"></a><div class="titlepage"></div> |
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| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gstreamer-plugins-queue2.top_of_page"></a>queue2</span></h2> |
| <p>queue2</p> |
| </td> |
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| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.properties"></a><h2>Properties</h2> |
| <div class="informaltable"><table border="0"> |
| <colgroup> |
| <col width="150px" class="properties_type"> |
| <col width="300px" class="properties_name"> |
| <col width="200px" class="properties_flags"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--current-level-buffers" title="The “current-level-buffers” property">current-level-buffers</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--current-level-bytes" title="The “current-level-bytes” property">current-level-bytes</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">guint64</span></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--current-level-time" title="The “current-level-time” property">current-level-time</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--high-percent" title="The “high-percent” property">high-percent</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--low-percent" title="The “low-percent” property">low-percent</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--max-size-buffers" title="The “max-size-buffers” property">max-size-buffers</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--max-size-bytes" title="The “max-size-bytes” property">max-size-bytes</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">guint64</span></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--max-size-time" title="The “max-size-time” property">max-size-time</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><span class="type">guint64</span></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--ring-buffer-max-size" title="The “ring-buffer-max-size” property">ring-buffer-max-size</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--temp-location" title="The “temp-location” property">temp-location</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--temp-remove" title="The “temp-remove” property">temp-remove</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"> |
| <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--temp-template" title="The “temp-template” property">temp-template</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--use-buffering" title="The “use-buffering” property">use-buffering</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--use-rate-estimate" title="The “use-rate-estimate” property">use-rate-estimate</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <a name="GstQueue2"></a><div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.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-plugins-queue2.html#GstQueue2-struct" title="struct GstQueue2">GstQueue2</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| <span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a> |
| <span class="lineart">╰──</span> GstQueue2 |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.description"></a><h2>Description</h2> |
| <p>Data is queued until one of the limits specified by the |
| <a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--max-size-buffers" title="The “max-size-buffers” property"><span class="type">“max-size-buffers”</span></a>, <a class="link" href="gstreamer-plugins-queue2.html#GstQueue2--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-queue2.html#GstQueue2--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-queue2.html#GstQueue2--current-level-buffers" title="The “current-level-buffers” property"><span class="type">“current-level-buffers”</span></a> property.</p> |
| <p>The default queue size limits are 100 buffers, 2MB of data, or |
| two seconds worth of data, whichever is reached first.</p> |
| <p>If you set temp-template to a value such as /tmp/gstreamer-XXXXXX, the element |
| will allocate a random free filename and buffer data in the file. |
| By using this, it will buffer the entire stream data on the file independently |
| of the queue size limits, they will only be used for buffering statistics.</p> |
| <p>The temp-location property will be used to notify the application of the |
| allocated filename.</p> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.16.7.8.1"></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>, Wim Taymans <wim.taymans@gmail.com></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="id-1.2.16.7.8.2"></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> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstQueue2-struct"></a><h3>struct GstQueue2</h3> |
| <pre class="programlisting">struct GstQueue2;</pre> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-queue2.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstQueue2--current-level-buffers"></a><h3>The <code class="literal">“current-level-buffers”</code> property</h3> |
| <pre class="programlisting"> “current-level-buffers” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Current number of buffers in the queue.</p> |
| <p>Flags: Read</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--current-level-bytes"></a><h3>The <code class="literal">“current-level-bytes”</code> property</h3> |
| <pre class="programlisting"> “current-level-bytes” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Current amount of data in the queue (bytes).</p> |
| <p>Flags: Read</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--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></pre> |
| <p>Current amount of data in the queue (in ns).</p> |
| <p>Flags: Read</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--high-percent"></a><h3>The <code class="literal">“high-percent”</code> property</h3> |
| <pre class="programlisting"> “high-percent” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>High threshold for buffering to finish. Only used if use-buffering is True.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [0,100]</p> |
| <p>Default value: 99</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--low-percent"></a><h3>The <code class="literal">“low-percent”</code> property</h3> |
| <pre class="programlisting"> “low-percent” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre> |
| <p>Low threshold for buffering to start. Only used if use-buffering is True.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [0,100]</p> |
| <p>Default value: 10</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--max-size-buffers"></a><h3>The <code class="literal">“max-size-buffers”</code> property</h3> |
| <pre class="programlisting"> “max-size-buffers” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Max. number of buffers in the queue (0=disable).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: 100</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--max-size-bytes"></a><h3>The <code class="literal">“max-size-bytes”</code> property</h3> |
| <pre class="programlisting"> “max-size-bytes” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>Max. amount of data in the queue (bytes, 0=disable).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: 2097152</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--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></pre> |
| <p>Max. amount of data in the queue (in ns, 0=disable).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: 2000000000</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--ring-buffer-max-size"></a><h3>The <code class="literal">“ring-buffer-max-size”</code> property</h3> |
| <pre class="programlisting"> “ring-buffer-max-size” <span class="type">guint64</span></pre> |
| <p>The maximum size of the ring buffer in bytes. If set to 0, the ring |
| buffer is disabled. Default 0.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: 0</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--temp-location"></a><h3>The <code class="literal">“temp-location”</code> property</h3> |
| <pre class="programlisting"> “temp-location” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre> |
| <p>Location to store temporary files in (Only read this property, use temp-template to configure the name template).</p> |
| <p>Flags: Read</p> |
| <p>Default value: NULL</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--temp-remove"></a><h3>The <code class="literal">“temp-remove”</code> property</h3> |
| <pre class="programlisting"> “temp-remove” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>When temp-template is set, remove the temporary file when going to READY.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--temp-template"></a><h3>The <code class="literal">“temp-template”</code> property</h3> |
| <pre class="programlisting"> “temp-template” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre> |
| <p>File template to store temporary files in, should contain directory and XXXXXX. (NULL == disabled).</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: NULL</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--use-buffering"></a><h3>The <code class="literal">“use-buffering”</code> property</h3> |
| <pre class="programlisting"> “use-buffering” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: FALSE</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstQueue2--use-rate-estimate"></a><h3>The <code class="literal">“use-rate-estimate”</code> property</h3> |
| <pre class="programlisting"> “use-rate-estimate” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Estimate the bitrate of the stream to calculate time level.</p> |
| <p>Flags: Read / Write</p> |
| <p>Default value: TRUE</p> |
| </div> |
| </div> |
| </div> |
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