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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>gstaudiobasesink: GStreamer Base Plugins 1.0 Library Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Library Reference Manual">
<link rel="up" href="gstreamer-audio.html" title="Audio Library">
<link rel="prev" href="gst-plugins-base-libs-gstaudiosrc.html" title="gstaudiosrc">
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<meta name="generator" content="GTK-Doc V1.24 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#gst-plugins-base-libs-gstaudiobasesink.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#gst-plugins-base-libs-gstaudiobasesink.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties">  <span class="dim">|</span> 
                  <a href="#gst-plugins-base-libs-gstaudiobasesink.properties" class="shortcut">Properties</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="gstreamer-audio.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gst-plugins-base-libs-gstaudiosrc.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="gst-plugins-base-libs-gstaudiobasesrc.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="gst-plugins-base-libs-gstaudiobasesink"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstaudiobasesink.top_of_page"></a>gstaudiobasesink</span></h2>
<p>gstaudiobasesink — Base class for audio sinks</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkCustomSlavingCallback" title="GstAudioBaseSinkCustomSlavingCallback ()">*GstAudioBaseSinkCustomSlavingCallback</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GST-AUDIO-BASE-SINK-CLOCK:CAPS" title="GST_AUDIO_BASE_SINK_CLOCK()">GST_AUDIO_BASE_SINK_CLOCK</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GST-AUDIO-BASE-SINK-PAD:CAPS" title="GST_AUDIO_BASE_SINK_PAD()">GST_AUDIO_BASE_SINK_PAD</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBuffer"><span class="returnvalue">GstAudioRingBuffer</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-create-ringbuffer" title="gst_audio_base_sink_create_ringbuffer ()">gst_audio_base_sink_create_ringbuffer</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-provide-clock" title="gst_audio_base_sink_set_provide_clock ()">gst_audio_base_sink_set_provide_clock</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-get-provide-clock" title="gst_audio_base_sink_get_provide_clock ()">gst_audio_base_sink_get_provide_clock</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-slave-method" title="gst_audio_base_sink_set_slave_method ()">gst_audio_base_sink_set_slave_method</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkSlaveMethod" title="enum GstAudioBaseSinkSlaveMethod"><span class="returnvalue">GstAudioBaseSinkSlaveMethod</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-get-slave-method" title="gst_audio_base_sink_get_slave_method ()">gst_audio_base_sink_get_slave_method</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-drift-tolerance" title="gst_audio_base_sink_set_drift_tolerance ()">gst_audio_base_sink_set_drift_tolerance</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-get-drift-tolerance" title="gst_audio_base_sink_get_drift_tolerance ()">gst_audio_base_sink_get_drift_tolerance</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-alignment-threshold" title="gst_audio_base_sink_set_alignment_threshold ()">gst_audio_base_sink_set_alignment_threshold</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-get-alignment-threshold" title="gst_audio_base_sink_get_alignment_threshold ()">gst_audio_base_sink_get_alignment_threshold</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-discont-wait" title="gst_audio_base_sink_set_discont_wait ()">gst_audio_base_sink_set_discont_wait</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-get-discont-wait" title="gst_audio_base_sink_get_discont_wait ()">gst_audio_base_sink_get_discont_wait</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-custom-slaving-callback" title="gst_audio_base_sink_set_custom_slaving_callback ()">gst_audio_base_sink_set_custom_slaving_callback</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="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-report-device-failure" title="gst_audio_base_sink_report_device_failure ()">gst_audio_base_sink_report_device_failure</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" 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="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--alignment-threshold" title="The “alignment-threshold” property">alignment-threshold</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--buffer-time" title="The “buffer-time” property">buffer-time</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--can-activate-pull" title="The “can-activate-pull” property">can-activate-pull</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--discont-wait" title="The “discont-wait” property">discont-wait</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--drift-tolerance" title="The “drift-tolerance” property">drift-tolerance</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--latency-time" title="The “latency-time” property">latency-time</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--provide-clock" title="The “provide-clock” property">provide-clock</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkSlaveMethod" title="enum GstAudioBaseSinkSlaveMethod"><span class="type">GstAudioBaseSinkSlaveMethod</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink--slave-method" title="The “slave-method” property">slave-method</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstAudioBaseSink"></a><div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" 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="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink-struct" title="struct GstAudioBaseSink">GstAudioBaseSink</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkClass" title="struct GstAudioBaseSinkClass">GstAudioBaseSinkClass</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkSlaveMethod" title="enum GstAudioBaseSinkSlaveMethod">GstAudioBaseSinkSlaveMethod</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkDiscontReason" title="enum GstAudioBaseSinkDiscontReason">GstAudioBaseSinkDiscontReason</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html">GstObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html">GstElement</a>
                <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseSink.html">GstBaseSink</a>
                    <span class="lineart">╰──</span> GstAudioBaseSink
                        <span class="lineart">╰──</span> <a class="link" href="gst-plugins-base-libs-gstaudiosink.html#GstAudioSink">GstAudioSink</a>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/audio/gstaudiobasesink.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.description"></a><h2>Description</h2>
<p>This is the base class for audio sinks. Subclasses need to implement the
::create_ringbuffer vmethod. This base class will then take care of
writing samples to the ringbuffer, synchronisation, clipping and flushing.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GstAudioBaseSinkCustomSlavingCallback"></a><h3>GstAudioBaseSinkCustomSlavingCallback ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
<span class="c_punctuation">(</span>*GstAudioBaseSinkCustomSlavingCallback<span class="c_punctuation">)</span>
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> etime</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> itime</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTimeDiff"><span class="type">GstClockTimeDiff</span></a> *requested_skew</code></em>,
                                <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkDiscontReason" title="enum GstAudioBaseSinkDiscontReason"><span class="type">GstAudioBaseSinkDiscontReason</span></a> discont_reason</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>This function is set with <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-set-custom-slaving-callback" title="gst_audio_base_sink_set_custom_slaving_callback ()"><code class="function">gst_audio_base_sink_set_custom_slaving_callback()</code></a>
and is called during playback. It receives the current time of external and
internal clocks, which the callback can then use to apply any custom
slaving/synchronization schemes.</p>
<p>The external clock is the sink's element clock, the internal one is the
internal audio clock. The internal audio clock's calibration is applied to
the timestamps before they are passed to the callback. The difference between
etime and itime is the skew; how much internal and external clock lie apart
from each other. A skew of 0 means both clocks are perfectly in sync.
itime &gt; etime means the external clock is going slower, while itime &lt; etime
means it is going faster than the internal clock. etime and itime are always
valid timestamps, except for when a discontinuity happens.</p>
<p>requested_skew is an output value the callback can write to. It informs the
sink of whether or not it should move the playout pointer, and if so, by how
much. This pointer is only NULL if a discontinuity occurs; otherwise, it is
safe to write to *requested_skew. The default skew is 0.</p>
<p>The sink may experience discontinuities. If one happens, discont is TRUE,
itime, etime are set to GST_CLOCK_TIME_NONE, and requested_skew is NULL.
This makes it possible to reset custom clock slaving algorithms when a
discontinuity happens.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.2.8"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>etime</p></td>
<td class="parameter_description"><p>external clock time</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>itime</p></td>
<td class="parameter_description"><p>internal clock time</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>requested_skew</p></td>
<td class="parameter_description"><p>skew amount requested by the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>discont_reason</p></td>
<td class="parameter_description"><p>reason for discontinuity (if any)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-BASE-SINK-CLOCK:CAPS"></a><h3>GST_AUDIO_BASE_SINK_CLOCK()</h3>
<pre class="programlisting">#define GST_AUDIO_BASE_SINK_CLOCK(obj)   (GST_AUDIO_BASE_SINK (obj)-&gt;clock)
</pre>
<p>Get the <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html"><span class="type">GstClock</span></a> of <em class="parameter"><code>obj</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>obj</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GST-AUDIO-BASE-SINK-PAD:CAPS"></a><h3>GST_AUDIO_BASE_SINK_PAD()</h3>
<pre class="programlisting">#define GST_AUDIO_BASE_SINK_PAD(obj)     (GST_BASE_SINK (obj)-&gt;sinkpad)
</pre>
<p>Get the sink <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstPad.html"><span class="type">GstPad</span></a> of <em class="parameter"><code>obj</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>obj</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-create-ringbuffer"></a><h3>gst_audio_base_sink_create_ringbuffer ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBuffer"><span class="returnvalue">GstAudioRingBuffer</span></a> *
gst_audio_base_sink_create_ringbuffer (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Create and return the <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBuffer"><span class="type">GstAudioRingBuffer</span></a> for <em class="parameter"><code>sink</code></em>
. This function will
call the ::create_ringbuffer vmethod and will set <em class="parameter"><code>sink</code></em>
 as the parent of
the returned buffer (see <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#gst-object-set-parent"><code class="function">gst_object_set_parent()</code></a>).</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.12.10.5.6"></a><h4>Returns</h4>
<p> The new ringbuffer of <em class="parameter"><code>sink</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-set-provide-clock"></a><h3>gst_audio_base_sink_set_provide_clock ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_set_provide_clock (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> provide</code></em>);</pre>
<p>Controls whether <em class="parameter"><code>sink</code></em>
 will provide a clock or not. If <em class="parameter"><code>provide</code></em>
 is <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>,
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#gst-element-provide-clock"><code class="function">gst_element_provide_clock()</code></a> will return a clock that reflects the datarate
of <em class="parameter"><code>sink</code></em>
. If <em class="parameter"><code>provide</code></em>
 is <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#gst-element-provide-clock"><code class="function">gst_element_provide_clock()</code></a> will return
NULL.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.6.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>provide</p></td>
<td class="parameter_description"><p>new state</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-get-provide-clock"></a><h3>gst_audio_base_sink_get_provide_clock ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_audio_base_sink_get_provide_clock (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Queries whether <em class="parameter"><code>sink</code></em>
 will provide a clock or not. See also
gst_audio_base_sink_set_provide_clock.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.12.10.7.6"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>sink</code></em>
will provide a clock.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-set-slave-method"></a><h3>gst_audio_base_sink_set_slave_method ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_set_slave_method (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                      <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkSlaveMethod" title="enum GstAudioBaseSinkSlaveMethod"><span class="type">GstAudioBaseSinkSlaveMethod</span></a> method</code></em>);</pre>
<p>Controls how clock slaving will be performed in <em class="parameter"><code>sink</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.8.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>method</p></td>
<td class="parameter_description"><p>the new slave method</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-get-slave-method"></a><h3>gst_audio_base_sink_get_slave_method ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkSlaveMethod" title="enum GstAudioBaseSinkSlaveMethod"><span class="returnvalue">GstAudioBaseSinkSlaveMethod</span></a>
gst_audio_base_sink_get_slave_method (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Get the current slave method used by <em class="parameter"><code>sink</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.12.10.9.6"></a><h4>Returns</h4>
<p> The current slave method used by <em class="parameter"><code>sink</code></em>
.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-set-drift-tolerance"></a><h3>gst_audio_base_sink_set_drift_tolerance ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_set_drift_tolerance
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> drift_tolerance</code></em>);</pre>
<p>Controls the sink's drift tolerance.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.10.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>drift_tolerance</p></td>
<td class="parameter_description"><p>the new drift tolerance in microseconds</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-get-drift-tolerance"></a><h3>gst_audio_base_sink_get_drift_tolerance ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a>
gst_audio_base_sink_get_drift_tolerance
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Get the current drift tolerance, in microseconds, used by <em class="parameter"><code>sink</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.12.10.11.6"></a><h4>Returns</h4>
<p> The current drift tolerance used by <em class="parameter"><code>sink</code></em>
.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-set-alignment-threshold"></a><h3>gst_audio_base_sink_set_alignment_threshold ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_set_alignment_threshold
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> alignment_threshold</code></em>);</pre>
<p>Controls the sink's alignment threshold.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.12.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>alignment_threshold</p></td>
<td class="parameter_description"><p>the new alignment threshold in nanoseconds</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-get-alignment-threshold"></a><h3>gst_audio_base_sink_get_alignment_threshold ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>
gst_audio_base_sink_get_alignment_threshold
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Get the current alignment threshold, in nanoseconds, used by <em class="parameter"><code>sink</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.13.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.12.10.13.6"></a><h4>Returns</h4>
<p> The current alignment threshold used by <em class="parameter"><code>sink</code></em>
.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-set-discont-wait"></a><h3>gst_audio_base_sink_set_discont_wait ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_set_discont_wait (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> discont_wait</code></em>);</pre>
<p>Controls how long the sink will wait before creating a discontinuity.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.14.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>discont_wait</p></td>
<td class="parameter_description"><p>the new discont wait in nanoseconds</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-get-discont-wait"></a><h3>gst_audio_base_sink_get_discont_wait ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>
gst_audio_base_sink_get_discont_wait (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Get the current discont wait, in nanoseconds, used by <em class="parameter"><code>sink</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.15.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.6.12.10.15.6"></a><h4>Returns</h4>
<p> The current discont wait used by <em class="parameter"><code>sink</code></em>
.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-set-custom-slaving-callback"></a><h3>gst_audio_base_sink_set_custom_slaving_callback ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_set_custom_slaving_callback
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>,
                                <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkCustomSlavingCallback" title="GstAudioBaseSinkCustomSlavingCallback ()"><span class="type">GstAudioBaseSinkCustomSlavingCallback</span></a> callback</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> notify</code></em>);</pre>
<p>Sets the custom slaving callback. This callback will
be invoked if the slave-method property is set to
GST_AUDIO_BASE_SINK_SLAVE_CUSTOM and the audio sink
receives and plays samples.</p>
<p>Setting the callback to NULL causes the sink to
behave as if the GST_AUDIO_BASE_SINK_SLAVE_NONE
method were used.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.16.6"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkCustomSlavingCallback" title="GstAudioBaseSinkCustomSlavingCallback ()"><span class="type">GstAudioBaseSinkCustomSlavingCallback</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data passed to the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>notify</p></td>
<td class="parameter_description"><p>called when user_data becomes unused</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-audio-base-sink-report-device-failure"></a><h3>gst_audio_base_sink_report_device_failure ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gst_audio_base_sink_report_device_failure
                               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> *sink</code></em>);</pre>
<p>Informs this base class that the audio output device has failed for
some reason, causing a discontinuity (for example, because the device
recovered from the error, but lost all contents of its ring buffer).
This function is typically called by derived classes, and is useful
for the custom slave method.</p>
<div class="refsect3">
<a name="id-1.2.6.12.10.17.5"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>sink</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: 1.6</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstAudioBaseSink-struct"></a><h3>struct GstAudioBaseSink</h3>
<pre class="programlisting">struct GstAudioBaseSink;</pre>
<p>Opaque <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a>.</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSinkClass"></a><h3>struct GstAudioBaseSinkClass</h3>
<pre class="programlisting">struct GstAudioBaseSinkClass {
  GstBaseSinkClass     parent_class;

  /* subclass ringbuffer allocation */
  GstAudioRingBuffer* (*create_ringbuffer)  (GstAudioBaseSink *sink);

  /* subclass payloader */
  GstBuffer*          (*payload)            (GstAudioBaseSink *sink,
                                             GstBuffer        *buffer);
};
</pre>
<p><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSink"><span class="type">GstAudioBaseSink</span></a> class. Override the vmethod to implement
functionality.</p>
<div class="refsect3">
<a name="id-1.2.6.12.11.3.5"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" 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="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseSink.html#GstBaseSinkClass"><span class="type">GstBaseSinkClass</span></a> <em class="structfield"><code><a name="GstAudioBaseSinkClass.parent-class"></a>parent_class</code></em>;</p></td>
<td class="struct_member_description"><p>the parent class.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioBaseSinkClass.create-ringbuffer"></a>create_ringbuffer</code></em> ()</p></td>
<td class="struct_member_description"><p>create and return a <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBuffer"><span class="type">GstAudioRingBuffer</span></a> to write to.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstAudioBaseSinkClass.payload"></a>payload</code></em> ()</p></td>
<td class="struct_member_description"><p>payload data in a format suitable to write to the sink. If no
payloading is required, returns a reffed copy of the original
buffer, else returns the payloaded buffer with all other metadata
copied.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSinkSlaveMethod"></a><h3>enum GstAudioBaseSinkSlaveMethod</h3>
<p>Different possible clock slaving algorithms used when the internal audio
clock is not selected as the pipeline master clock.</p>
<div class="refsect3">
<a name="id-1.2.6.12.11.4.4"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-SLAVE-RESAMPLE:CAPS"></a>GST_AUDIO_BASE_SINK_SLAVE_RESAMPLE</p></td>
<td class="enum_member_description">
<p>Resample to match the master clock</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-SLAVE-SKEW:CAPS"></a>GST_AUDIO_BASE_SINK_SLAVE_SKEW</p></td>
<td class="enum_member_description">
<p>Adjust playout pointer when master clock
drifts too much.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-SLAVE-NONE:CAPS"></a>GST_AUDIO_BASE_SINK_SLAVE_NONE</p></td>
<td class="enum_member_description">
<p>No adjustment is done.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-SLAVE-CUSTOM:CAPS"></a>GST_AUDIO_BASE_SINK_SLAVE_CUSTOM</p></td>
<td class="enum_member_description">
<p>Use custom clock slaving algorithm (Since: 1.6)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSinkDiscontReason"></a><h3>enum GstAudioBaseSinkDiscontReason</h3>
<p>Different possible reasons for discontinuities. This enum is useful for the custom
slave method.</p>
<div class="refsect3">
<a name="id-1.2.6.12.11.5.4"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-DISCONT-REASON-NO-DISCONT:CAPS"></a>GST_AUDIO_BASE_SINK_DISCONT_REASON_NO_DISCONT</p></td>
<td class="enum_member_description">
<p>No discontinuity occurred</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-DISCONT-REASON-NEW-CAPS"></a>GST_AUDIO_BASE_SINK_DISCONT_REASON_NEW_CAPS</p></td>
<td class="enum_member_description">
<p>New caps are set, causing renegotiotion</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-DISCONT-REASON-FLUSH:CAPS"></a>GST_AUDIO_BASE_SINK_DISCONT_REASON_FLUSH</p></td>
<td class="enum_member_description">
<p>Samples have been flushed</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-DISCONT-REASON-SYNC-LATENCY:CAPS"></a>GST_AUDIO_BASE_SINK_DISCONT_REASON_SYNC_LATENCY</p></td>
<td class="enum_member_description">
<p>Sink was synchronized to the estimated latency (occurs during initialization)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-DISCONT-REASON-ALIGNMENT:CAPS"></a>GST_AUDIO_BASE_SINK_DISCONT_REASON_ALIGNMENT</p></td>
<td class="enum_member_description">
<p>Aligning buffers failed because the timestamps are too discontinuous</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-AUDIO-BASE-SINK-DISCONT-REASON-DEVICE-FAILURE:CAPS"></a>GST_AUDIO_BASE_SINK_DISCONT_REASON_DEVICE_FAILURE</p></td>
<td class="enum_member_description">
<p>Audio output device experienced and recovered from an error but introduced latency in the process (see also <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#gst-audio-base-sink-report-device-failure" title="gst_audio_base_sink_report_device_failure ()"><code class="function">gst_audio_base_sink_report_device_failure()</code></a></code></em>
)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.6</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstAudioBaseSink--alignment-threshold"></a><h3>The <code class="literal">“alignment-threshold”</code> property</h3>
<pre class="programlisting">  “alignment-threshold”      <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></pre>
<p>Timestamp alignment threshold in nanoseconds.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [1,18446744073709551614]</p>
<p>Default value: 40000000</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--buffer-time"></a><h3>The <code class="literal">“buffer-time”</code> property</h3>
<pre class="programlisting">  “buffer-time”              <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a></pre>
<p>Size of audio buffer in microseconds, this is the minimum latency that the sink reports.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: &gt;= 1</p>
<p>Default value: 200000</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--can-activate-pull"></a><h3>The <code class="literal">“can-activate-pull”</code> property</h3>
<pre class="programlisting">  “can-activate-pull”        <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Allow pull-based scheduling.</p>
<p>Flags: Read / Write</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--discont-wait"></a><h3>The <code class="literal">“discont-wait”</code> property</h3>
<pre class="programlisting">  “discont-wait”             <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a></pre>
<p>A window of time in nanoseconds to wait before creating a discontinuity as
a result of breaching the drift-tolerance.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: &lt;= 18446744073709551614</p>
<p>Default value: 1000000000</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--drift-tolerance"></a><h3>The <code class="literal">“drift-tolerance”</code> property</h3>
<pre class="programlisting">  “drift-tolerance”          <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a></pre>
<p>Controls the amount of time in microseconds that clocks are allowed
to drift before resynchronisation happens.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: &gt;= 1</p>
<p>Default value: 40000</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--latency-time"></a><h3>The <code class="literal">“latency-time”</code> property</h3>
<pre class="programlisting">  “latency-time”             <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a></pre>
<p>The minimum amount of data to write in each iteration in microseconds.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: &gt;= 1</p>
<p>Default value: 10000</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--provide-clock"></a><h3>The <code class="literal">“provide-clock”</code> property</h3>
<pre class="programlisting">  “provide-clock”            <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Provide a clock to be used as the global pipeline clock.</p>
<p>Flags: Read / Write</p>
<p>Default value: TRUE</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioBaseSink--slave-method"></a><h3>The <code class="literal">“slave-method”</code> property</h3>
<pre class="programlisting">  “slave-method”             <a class="link" href="gst-plugins-base-libs-gstaudiobasesink.html#GstAudioBaseSinkSlaveMethod" title="enum GstAudioBaseSinkSlaveMethod"><span class="type">GstAudioBaseSinkSlaveMethod</span></a></pre>
<p>Algorithm used to match the rate of the masterclock.</p>
<p>Flags: Read / Write</p>
<p>Default value: GST_AUDIO_BASE_SINK_SLAVE_SKEW</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstaudiobasesink.see-also"></a><h2>See Also</h2>
<p><a class="link" href="gst-plugins-base-libs-gstaudiosink.html#GstAudioSink"><span class="type">GstAudioSink</span></a>, <a class="link" href="gst-plugins-base-libs-gstaudioringbuffer.html#GstAudioRingBuffer"><span class="type">GstAudioRingBuffer</span></a>.</p>
</div>
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