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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
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<title>GStreamer Editing Services 1.2.1 Reference Manual: GESAudioTestSource</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 
                  <a href="#GESAudioTestSource.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 
                  <a href="#GESAudioTestSource.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> 
                  <a href="#GESAudioTestSource.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span>
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<div class="refentry">
<a name="GESAudioTestSource"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GESAudioTestSource.top_of_page"></a>GESAudioTestSource</span></h2>
<p>GESAudioTestSource — produce a simple test waveform or silence</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GESAudioTestSource.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GESAudioTestSource.html#ges-audio-test-source-set-freq" title="ges_audio_test_source_set_freq ()">ges_audio_test_source_set_freq</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="GESAudioTestSource.html#ges-audio-test-source-set-volume" title="ges_audio_test_source_set_volume ()">ges_audio_test_source_set_volume</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">double</span>
</td>
<td class="function_name">
<a class="link" href="GESAudioTestSource.html#ges-audio-test-source-get-freq" title="ges_audio_test_source_get_freq ()">ges_audio_test_source_get_freq</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">double</span>
</td>
<td class="function_name">
<a class="link" href="GESAudioTestSource.html#ges-audio-test-source-get-volume" title="ges_audio_test_source_get_volume ()">ges_audio_test_source_get_volume</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.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"> </td>
<td class="function_name"><a class="link" href="GESAudioTestSource.html#GESAudioTestSource-struct" title="GESAudioTestSource">GESAudioTestSource</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.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 class="link" href="GESTimelineElement.html" title="GESTimelineElement">GESTimelineElement</a>
            <span class="lineart">╰──</span> <a class="link" href="GESTrackElement.html" title="GESTrackElement">GESTrackElement</a>
                <span class="lineart">╰──</span> <a class="link" href="GESSource.html" title="GESSource">GESSource</a>
                    <span class="lineart">╰──</span> <a class="link" href="GESAudioSource.html" title="GESAudioSource">GESAudioSource</a>
                        <span class="lineart">╰──</span> GESAudioTestSource
</pre>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GESAudioTestSource implements
 <a class="link" href="ges-GESExtractableInterface.html#GESExtractable">GESExtractable</a> and  <a class="link" href="GESMetaContainer.html" title="GESMetaContainer">GESMetaContainer</a>.</p>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;ges/ges.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.description"></a><h2>Description</h2>
<p>Outputs a test audio stream using audiotestsrc. The default property values
output silence. Useful for testing pipelines, or to fill gaps in an audio
track.</p>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="ges-audio-test-source-set-freq"></a><h3>ges_audio_test_source_set_freq ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
ges_audio_test_source_set_freq (<em class="parameter"><code><a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a> *self</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> freq</code></em>);</pre>
<p>Lets you set the frequency applied on the track element</p>
<div class="refsect3">
<a name="id-1.5.5.9.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>freq</p></td>
<td class="parameter_description"><p>The frequency you want to apply on <em class="parameter"><code>self</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ges-audio-test-source-set-volume"></a><h3>ges_audio_test_source_set_volume ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
ges_audio_test_source_set_volume (<em class="parameter"><code><a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a> *self</code></em>,
                                  <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> volume</code></em>);</pre>
<p>Sets the volume of the test audio signal.</p>
<div class="refsect3">
<a name="id-1.5.5.9.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>volume</p></td>
<td class="parameter_description"><p>The volume you want to apply on <em class="parameter"><code>self</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ges-audio-test-source-get-freq"></a><h3>ges_audio_test_source_get_freq ()</h3>
<pre class="programlisting"><span class="returnvalue">double</span>
ges_audio_test_source_get_freq (<em class="parameter"><code><a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a> *self</code></em>);</pre>
<p>Get the current frequency of <em class="parameter"><code>self</code></em>
.</p>
<div class="refsect3">
<a name="id-1.5.5.9.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.9.4.6"></a><h4>Returns</h4>
<p> The current frequency of <em class="parameter"><code>self</code></em>
.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="ges-audio-test-source-get-volume"></a><h3>ges_audio_test_source_get_volume ()</h3>
<pre class="programlisting"><span class="returnvalue">double</span>
ges_audio_test_source_get_volume (<em class="parameter"><code><a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a> *self</code></em>);</pre>
<p>Get the current volume of <em class="parameter"><code>self</code></em>
.</p>
<div class="refsect3">
<a name="id-1.5.5.9.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GESAudioTestSource.html" title="GESAudioTestSource"><span class="type">GESAudioTestSource</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.5.9.5.6"></a><h4>Returns</h4>
<p> The current volume of <em class="parameter"><code>self</code></em>
</p>
<p></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="GESAudioTestSource.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GESAudioTestSource-struct"></a><h3>GESAudioTestSource</h3>
<pre class="programlisting">typedef struct _GESAudioTestSource GESAudioTestSource;</pre>
</div>
</div>
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