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<h2><span class="refentrytitle"><a name="MateMixerContext.top_of_page"></a>MateMixerContext</span></h2>
<p>MateMixerContext — The main class for interfacing with the library</p>
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<div class="refsect1">
<a name="MateMixerContext.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
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<td class="function_type">
<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="returnvalue">MateMixerContext</span></a> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-new" title="mate_mixer_context_new ()">mate_mixer_context_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-backend-type" title="mate_mixer_context_set_backend_type ()">mate_mixer_context_set_backend_type</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-app-name" title="mate_mixer_context_set_app_name ()">mate_mixer_context_set_app_name</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-app-id" title="mate_mixer_context_set_app_id ()">mate_mixer_context_set_app_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-app-version" title="mate_mixer_context_set_app_version ()">mate_mixer_context_set_app_version</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-app-icon" title="mate_mixer_context_set_app_icon ()">mate_mixer_context_set_app_icon</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-server-address" title="mate_mixer_context_set_server_address ()">mate_mixer_context_set_server_address</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()">mate_mixer_context_open</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-close" title="mate_mixer_context_close ()">mate_mixer_context_close</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<a class="link" href="MateMixerContext.html#MateMixerState" title="enum MateMixerState"><span class="returnvalue">MateMixerState</span></a>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-state" title="mate_mixer_context_get_state ()">mate_mixer_context_get_state</a> <span class="c_punctuation">()</span>
</td>
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<tr>
<td class="function_type">
<a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="returnvalue">MateMixerDevice</span></a> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-device" title="mate_mixer_context_get_device ()">mate_mixer_context_get_device</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="returnvalue">MateMixerStream</span></a> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-stream" title="mate_mixer_context_get_stream ()">mate_mixer_context_get_stream</a> <span class="c_punctuation">()</span>
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<td class="function_type">
<a class="link" href="MateMixerStoredControl.html" title="MateMixerStoredControl"><span class="returnvalue">MateMixerStoredControl</span></a> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-stored-control" title="mate_mixer_context_get_stored_control ()">mate_mixer_context_get_stored_control</a> <span class="c_punctuation">()</span>
</td>
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<tr>
<td class="function_type">const <span class="returnvalue">GList</span> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-devices" title="mate_mixer_context_list_devices ()">mate_mixer_context_list_devices</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">const <span class="returnvalue">GList</span> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-streams" title="mate_mixer_context_list_streams ()">mate_mixer_context_list_streams</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">const <span class="returnvalue">GList</span> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-stored-controls" title="mate_mixer_context_list_stored_controls ()">mate_mixer_context_list_stored_controls</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="returnvalue">MateMixerStream</span></a> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-default-input-stream" title="mate_mixer_context_get_default_input_stream ()">mate_mixer_context_get_default_input_stream</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-default-input-stream" title="mate_mixer_context_set_default_input_stream ()">mate_mixer_context_set_default_input_stream</a> <span class="c_punctuation">()</span>
</td>
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<tr>
<td class="function_type">
<a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="returnvalue">MateMixerStream</span></a> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-default-output-stream" title="mate_mixer_context_get_default_output_stream ()">mate_mixer_context_get_default_output_stream</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-set-default-output-stream" title="mate_mixer_context_set_default_output_stream ()">mate_mixer_context_set_default_output_stream</a> <span class="c_punctuation">()</span>
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<td class="function_type">const <span class="returnvalue">gchar</span> *
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-backend-name" title="mate_mixer_context_get_backend_name ()">mate_mixer_context_get_backend_name</a> <span class="c_punctuation">()</span>
</td>
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<td class="function_type">
<a class="link" href="MateMixerContext.html#MateMixerBackendType" title="enum MateMixerBackendType"><span class="returnvalue">MateMixerBackendType</span></a>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-backend-type" title="mate_mixer_context_get_backend_type ()">mate_mixer_context_get_backend_type</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="MateMixerContext.html#MateMixerBackendFlags" title="enum MateMixerBackendFlags"><span class="returnvalue">MateMixerBackendFlags</span></a>
</td>
<td class="function_name">
<a class="link" href="MateMixerContext.html#mate-mixer-context-get-backend-flags" title="mate_mixer_context_get_backend_flags ()">mate_mixer_context_get_backend_flags</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="MateMixerContext.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">
<span class="type">gchar</span> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--app-icon" title="The “app-icon” property">app-icon</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<span class="type">gchar</span> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--app-id" title="The “app-id” property">app-id</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<span class="type">gchar</span> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--app-name" title="The “app-name” property">app-name</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<span class="type">gchar</span> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--app-version" title="The “app-version” property">app-version</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--default-input-stream" title="The “default-input-stream” property">default-input-stream</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--default-output-stream" title="The “default-output-stream” property">default-output-stream</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type">
<span class="type">gchar</span> *</td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--server-address" title="The “server-address” property">server-address</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a class="link" href="MateMixerContext.html#MateMixerState" title="enum MateMixerState"><span class="type">MateMixerState</span></a></td>
<td class="property_name"><a class="link" href="MateMixerContext.html#MateMixerContext--state" title="The “state” property">state</a></td>
<td class="property_flags">Read</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="MateMixerContext.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
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<tbody>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="MateMixerContext.html#MateMixerContext-device-added" title="The “device-added” signal">device-added</a></td>
<td class="signal_flags">Run First</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="MateMixerContext.html#MateMixerContext-device-removed" title="The “device-removed” signal">device-removed</a></td>
<td class="signal_flags">Run First</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="MateMixerContext.html#MateMixerContext-stored-control-added" title="The “stored-control-added” signal">stored-control-added</a></td>
<td class="signal_flags">Run First</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="MateMixerContext.html#MateMixerContext-stored-control-removed" title="The “stored-control-removed” signal">stored-control-removed</a></td>
<td class="signal_flags">Run First</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="MateMixerContext.html#MateMixerContext-stream-added" title="The “stream-added” signal">stream-added</a></td>
<td class="signal_flags">Run First</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="MateMixerContext.html#MateMixerContext-stream-removed" title="The “stream-removed” signal">stream-removed</a></td>
<td class="signal_flags">Run First</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="MateMixerContext.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">enum</td>
<td class="function_name"><a class="link" href="MateMixerContext.html#MateMixerState" title="enum MateMixerState">MateMixerState</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="MateMixerContext.html#MateMixerBackendType" title="enum MateMixerBackendType">MateMixerBackendType</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="MateMixerContext.html#MateMixerBackendFlags" title="enum MateMixerBackendFlags">MateMixerBackendFlags</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="MateMixerContext.html#MateMixerContext-struct" title="MateMixerContext">MateMixerContext</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="MateMixerContext.html#MateMixerContextClass" title="struct MateMixerContextClass">MateMixerContextClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="MateMixerContext.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> GObject
<span class="lineart">╰──</span> MateMixerContext
</pre>
</div>
<div class="refsect1">
<a name="MateMixerContext.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <libmatemixer/matemixer.h>
</pre>
</div>
<div class="refsect1">
<a name="MateMixerContext.description"></a><h2>Description</h2>
<p>After the library is initialized, a context should be created to gain
access to a sound system.</p>
<p>To create a new context, use the <a class="link" href="MateMixerContext.html#mate-mixer-context-new" title="mate_mixer_context_new ()"><code class="function">mate_mixer_context_new()</code></a> function.</p>
<p>The <a class="link" href="MateMixerContext.html#mate-mixer-context-set-backend-type" title="mate_mixer_context_set_backend_type ()"><code class="function">mate_mixer_context_set_backend_type()</code></a> function can be used to associate
the context with a particular type of sound system. Using this function is
not necessary, by default the context will select a working sound system
backend automatically.</p>
<p>To connect to a sound system, use <a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>.</p>
<p>When the connection is established, it is possible to query a list of sound
devices with <a class="link" href="MateMixerContext.html#mate-mixer-context-list-devices" title="mate_mixer_context_list_devices ()"><code class="function">mate_mixer_context_list_devices()</code></a> and streams with
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-streams" title="mate_mixer_context_list_streams ()"><code class="function">mate_mixer_context_list_streams()</code></a>.</p>
<p>A device represents a hardware or software sound device in the system,
typically a sound card.</p>
<p>A stream is an input or output channel that may exist either as a part of a
sound device, or independently. Streams essentially serve as containers for
volume controls and switches, for example a sound card with microphone and
line-in connectors may have an input stream containing volume controls for
each of these connectors and possibly a switch allowing to change the active
connector.</p>
<p>Streams may also exist independently as the sound system may for example
allow audio streaming over a network.</p>
<p>For a more thorough description of devices and streams, see <a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="type">MateMixerDevice</span></a>
and <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a>.</p>
<p>Devices and streams (as almost all other elements in the library) may appear
and disappear at any time, for example when external sound cards are plugged
and unplugged. The application should connect to the appropriate signals to
handle these events.</p>
</div>
<div class="refsect1">
<a name="MateMixerContext.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="mate-mixer-context-new"></a><h3>mate_mixer_context_new ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="returnvalue">MateMixerContext</span></a> *
mate_mixer_context_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Creates a new <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> instance.</p>
<div class="refsect3">
<a name="id-1.2.4.10.2.5"></a><h4>Returns</h4>
<p> a new <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> instance or <code class="literal">NULL</code> if the library has not
been initialized with <a class="link" href="libmatemixer-MateMixer.html#mate-mixer-init" title="mate_mixer_init ()"><code class="function">mate_mixer_init()</code></a>.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-backend-type"></a><h3>mate_mixer_context_set_backend_type ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_backend_type (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="MateMixerContext.html#MateMixerBackendType" title="enum MateMixerBackendType"><span class="type">MateMixerBackendType</span></a> backend_type</code></em>);</pre>
<p>Makes the <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> use the given <a class="link" href="MateMixerContext.html#MateMixerBackendType" title="enum MateMixerBackendType"><span class="type">MateMixerBackendType</span></a>.</p>
<p>By default the backend type is determined automatically. This function can
be used to alter this behavior and make the <em class="parameter"><code>context</code></em>
use the selected sound
system.</p>
<p>Setting the backend type only succeeds if the selected backend module is
available in the target system.</p>
<p>If you have used this function before and want restore the default automatic
backend type discovery, set the backend type to <a class="link" href="MateMixerContext.html#MATE-MIXER-BACKEND-UNKNOWN:CAPS"><code class="literal">MATE_MIXER_BACKEND_UNKNOWN</code></a>.</p>
<p>This function must be used before opening a connection to a sound system with
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>, otherwise it will fail.</p>
<div class="refsect3">
<a name="id-1.2.4.10.3.9"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>backend_type</p></td>
<td class="parameter_description"><p>the sound system backend to use</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.3.10"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-app-name"></a><h3>mate_mixer_context_set_app_name ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_app_name (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *app_name</code></em>);</pre>
<p>Sets the name of your application. This information may be used when
registering with the sound system.</p>
<p>This function must be used before opening a connection to a sound system with
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>, otherwise it will fail.</p>
<div class="refsect3">
<a name="id-1.2.4.10.4.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>app_name</p></td>
<td class="parameter_description"><p>the name of your application, or <code class="literal">NULL</code> to unset</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.4.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-app-id"></a><h3>mate_mixer_context_set_app_id ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_app_id (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *app_id</code></em>);</pre>
<p>Sets the identifier of your application (e.g. org.example.app). This
information may be used when registering with the sound system.</p>
<p>This function must be used before opening a connection to a sound system with
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>, otherwise it will fail.</p>
<div class="refsect3">
<a name="id-1.2.4.10.5.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>app_id</p></td>
<td class="parameter_description"><p>the identifier of your application, or <code class="literal">NULL</code> to unset</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.5.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-app-version"></a><h3>mate_mixer_context_set_app_version ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_app_version (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *app_version</code></em>);</pre>
<p>Sets the version of your application. This information may be used when
registering with the sound system.</p>
<p>This function must be used before opening a connection to a sound system with
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>, otherwise it will fail.</p>
<div class="refsect3">
<a name="id-1.2.4.10.6.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>app_version</p></td>
<td class="parameter_description"><p>the version of your application, or <code class="literal">NULL</code> to unset</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.6.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-app-icon"></a><h3>mate_mixer_context_set_app_icon ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_app_icon (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *app_icon</code></em>);</pre>
<p>Sets the XDG icon name of your application. This information may be used when
registering with the sound system.</p>
<p>This function must be used before opening a connection to a sound system with
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>, otherwise it will fail.</p>
<div class="refsect3">
<a name="id-1.2.4.10.7.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>app_icon</p></td>
<td class="parameter_description"><p>the XDG icon name of your application, or <code class="literal">NULL</code> to unset</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.7.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-server-address"></a><h3>mate_mixer_context_set_server_address ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_server_address (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *address</code></em>);</pre>
<p>Sets the address of the sound server. This feature is only supported in the
PulseAudio backend. If the address is not set, the default PulseAudio sound
server will be used, which is normally the local daemon.</p>
<p>This function must be used before opening a connection to a sound system with
<a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>, otherwise it will fail.</p>
<div class="refsect3">
<a name="id-1.2.4.10.8.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>address</p></td>
<td class="parameter_description"><p>the address of the sound server to connect to or <code class="literal">NULL</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.8.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-open"></a><h3>mate_mixer_context_open ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_open (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Opens connection to a sound system. Unless the sound system backend type
was chosen manually with <a class="link" href="MateMixerContext.html#mate-mixer-context-set-backend-type" title="mate_mixer_context_set_backend_type ()"><code class="function">mate_mixer_context_set_backend_type()</code></a>, the library
will find a working sound system automatically.</p>
<p>This function can complete the operation either synchronously or
asynchronously and it may go through a series of connection
<a class="link" href="MateMixerContext.html#MateMixerContext--state" title="The “state” property"><span class="type">“state”</span></a> transitions.</p>
<p>If this function returns <code class="literal">TRUE</code>, the connection has either been established, or
it hasn't been established yet and the result will be determined asynchronously.
You can differentiate between these two possibilities by checking the connection
<a class="link" href="MateMixerContext.html#MateMixerContext--state" title="The “state” property"><span class="type">“state”</span></a> after this function returns.</p>
<p>The <a class="link" href="MateMixerContext.html#MATE-MIXER-STATE-READY:CAPS"><code class="literal">MATE_MIXER_STATE_READY</code></a> state indicates that the connection has been
established successfully.</p>
<p>The <a class="link" href="MateMixerContext.html#MATE-MIXER-STATE-CONNECTING:CAPS"><code class="literal">MATE_MIXER_STATE_CONNECTING</code></a> state is reached when the connection has not been
established yet and you should wait for the state to change to either
<a class="link" href="MateMixerContext.html#MATE-MIXER-STATE-READY:CAPS"><code class="literal">MATE_MIXER_STATE_READY</code></a> or <a class="link" href="MateMixerContext.html#MATE-MIXER-STATE-FAILED:CAPS"><code class="literal">MATE_MIXER_STATE_FAILED</code></a>. It is required to have a main
loop running to allow an asynchronous connection to proceed. The library will use
the thread's default main context for this purpose.</p>
<p>If this function returns <code class="literal">FALSE</code>, it was not possible to connect to a sound system
and the <a class="link" href="MateMixerContext.html#MateMixerContext--state" title="The “state” property"><span class="type">“state”</span></a> will be set to <a class="link" href="MateMixerContext.html#MATE-MIXER-STATE-FAILED:CAPS"><code class="literal">MATE_MIXER_STATE_FAILED</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.10.9.10"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.9.11"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or if the result will be determined asynchronously,
or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-close"></a><h3>mate_mixer_context_close ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
mate_mixer_context_close (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Closes an open connection to the sound system. The <a class="link" href="MateMixerContext.html#MateMixerContext--state" title="The “state” property"><span class="type">“state”</span></a>
will be set to <a class="link" href="MateMixerContext.html#MATE-MIXER-STATE-IDLE:CAPS"><code class="literal">MATE_MIXER_STATE_IDLE</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.10.10.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-state"></a><h3>mate_mixer_context_get_state ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerContext.html#MateMixerState" title="enum MateMixerState"><span class="returnvalue">MateMixerState</span></a>
mate_mixer_context_get_state (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets the state of the <em class="parameter"><code>context</code></em>
's connection to a sound system.</p>
<div class="refsect3">
<a name="id-1.2.4.10.11.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.11.6"></a><h4>Returns</h4>
<p> the connection state.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-device"></a><h3>mate_mixer_context_get_device ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="returnvalue">MateMixerDevice</span></a> *
mate_mixer_context_get_device (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);</pre>
<p>Gets the device with the given name.</p>
<div class="refsect3">
<a name="id-1.2.4.10.12.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>a device name</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.12.6"></a><h4>Returns</h4>
<p> a <a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="type">MateMixerDevice</span></a> or <code class="literal">NULL</code> if there is no such device.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-stream"></a><h3>mate_mixer_context_get_stream ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="returnvalue">MateMixerStream</span></a> *
mate_mixer_context_get_stream (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);</pre>
<p>Gets the stream with the given name.</p>
<div class="refsect3">
<a name="id-1.2.4.10.13.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>a stream name</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.13.6"></a><h4>Returns</h4>
<p> a <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> or <code class="literal">NULL</code> if there is no such stream.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-stored-control"></a><h3>mate_mixer_context_get_stored_control ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerStoredControl.html" title="MateMixerStoredControl"><span class="returnvalue">MateMixerStoredControl</span></a> *
mate_mixer_context_get_stored_control (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);</pre>
<p>Gets the stored control with the given name.</p>
<div class="refsect3">
<a name="id-1.2.4.10.14.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>a stored control name</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.14.6"></a><h4>Returns</h4>
<p> a <a class="link" href="MateMixerStoredControl.html" title="MateMixerStoredControl"><span class="type">MateMixerStoredControl</span></a> or <code class="literal">NULL</code> if there is no such stored control.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-list-devices"></a><h3>mate_mixer_context_list_devices ()</h3>
<pre class="programlisting">const <span class="returnvalue">GList</span> *
mate_mixer_context_list_devices (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets a list of devices. Each item in the list is a <a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="type">MateMixerDevice</span></a> representing
a sound device in the system.</p>
<p>The returned <span class="type">GList</span> is owned by the library and may be invalidated at any time.</p>
<div class="refsect3">
<a name="id-1.2.4.10.15.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.15.7"></a><h4>Returns</h4>
<p> a <span class="type">GList</span> of all devices in the system or <code class="literal">NULL</code> if there are none or
you are not connected to a sound system.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-list-streams"></a><h3>mate_mixer_context_list_streams ()</h3>
<pre class="programlisting">const <span class="returnvalue">GList</span> *
mate_mixer_context_list_streams (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets a list of streams. Each item in the list is a <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> representing
an input or output stream.</p>
<p>Note that the list will contain streams which belong to devices as well
as streams which do not. If you are only interested in streams of a specific
device, use <a class="link" href="MateMixerDevice.html#mate-mixer-device-list-streams" title="mate_mixer_device_list_streams ()"><code class="function">mate_mixer_device_list_streams()</code></a>.</p>
<p>The returned <span class="type">GList</span> is owned by the library and may be invalidated at any time.</p>
<div class="refsect3">
<a name="id-1.2.4.10.16.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.16.8"></a><h4>Returns</h4>
<p> a <span class="type">GList</span> of all streams in the system or <code class="literal">NULL</code> if there are none or
you are not connected to a sound system.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-list-stored-controls"></a><h3>mate_mixer_context_list_stored_controls ()</h3>
<pre class="programlisting">const <span class="returnvalue">GList</span> *
mate_mixer_context_list_stored_controls
(<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets a list of stored controls. Each item in the list is a <a class="link" href="MateMixerStoredControl.html" title="MateMixerStoredControl"><span class="type">MateMixerStoredControl</span></a>.</p>
<p>The returned <span class="type">GList</span> is owned by the library and may be invalidated at any time.</p>
<div class="refsect3">
<a name="id-1.2.4.10.17.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.17.7"></a><h4>Returns</h4>
<p> a <span class="type">GList</span> of stored controls or <code class="literal">NULL</code> if there are none or you are not
connected to a sound system.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-default-input-stream"></a><h3>mate_mixer_context_get_default_input_stream ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="returnvalue">MateMixerStream</span></a> *
mate_mixer_context_get_default_input_stream
(<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets the default input stream. The returned stream is where sound input
most likely comes from by default.</p>
<div class="refsect3">
<a name="id-1.2.4.10.18.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.18.6"></a><h4>Returns</h4>
<p> a <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> or <code class="literal">NULL</code> if there is no default input stream.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-default-input-stream"></a><h3>mate_mixer_context_set_default_input_stream ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_default_input_stream
(<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> *stream</code></em>);</pre>
<p>Changes the default input stream. The given <em class="parameter"><code>stream</code></em>
must be an input stream.</p>
<p>Changing the default input stream may not be supported by the sound system.
Use <a class="link" href="MateMixerContext.html#mate-mixer-context-get-backend-flags" title="mate_mixer_context_get_backend_flags ()"><code class="function">mate_mixer_context_get_backend_flags()</code></a> to find out.</p>
<div class="refsect3">
<a name="id-1.2.4.10.19.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> to set as the default input stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.19.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-default-output-stream"></a><h3>mate_mixer_context_get_default_output_stream ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="returnvalue">MateMixerStream</span></a> *
mate_mixer_context_get_default_output_stream
(<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets the default output stream. The returned stream is where sound output is
most likely directed to by default.</p>
<div class="refsect3">
<a name="id-1.2.4.10.20.5"></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>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.20.6"></a><h4>Returns</h4>
<p> a <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> or <code class="literal">NULL</code> if there are no output streams in
the system.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-set-default-output-stream"></a><h3>mate_mixer_context_set_default_output_stream ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
mate_mixer_context_set_default_output_stream
(<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> *stream</code></em>);</pre>
<p>Changes the default output stream. The given <em class="parameter"><code>stream</code></em>
must be an output stream.</p>
<p>Changing the default output stream may not be supported by the sound system.
Use <a class="link" href="MateMixerContext.html#mate-mixer-context-get-backend-flags" title="mate_mixer_context_get_backend_flags ()"><code class="function">mate_mixer_context_get_backend_flags()</code></a> to find out.</p>
<div class="refsect3">
<a name="id-1.2.4.10.21.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> to set as the default output stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.21.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> on success or <code class="literal">FALSE</code> on failure.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-backend-name"></a><h3>mate_mixer_context_get_backend_name ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> *
mate_mixer_context_get_backend_name (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets the name of the currently used sound system backend.</p>
<p>This function will not work until the <em class="parameter"><code>context</code></em>
is connected to a sound system.</p>
<div class="refsect3">
<a name="id-1.2.4.10.22.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.22.7"></a><h4>Returns</h4>
<p> the name or <code class="literal">NULL</code> on error.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-backend-type"></a><h3>mate_mixer_context_get_backend_type ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerContext.html#MateMixerBackendType" title="enum MateMixerBackendType"><span class="returnvalue">MateMixerBackendType</span></a>
mate_mixer_context_get_backend_type (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets the type of the currently used sound system backend.</p>
<p>This function will not work until the <em class="parameter"><code>context</code></em>
is connected to a sound system.</p>
<div class="refsect3">
<a name="id-1.2.4.10.23.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.23.7"></a><h4>Returns</h4>
<p> the backend type or <a class="link" href="MateMixerContext.html#MATE-MIXER-BACKEND-UNKNOWN:CAPS"><code class="literal">MATE_MIXER_BACKEND_UNKNOWN</code></a> on error.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="mate-mixer-context-get-backend-flags"></a><h3>mate_mixer_context_get_backend_flags ()</h3>
<pre class="programlisting"><a class="link" href="MateMixerContext.html#MateMixerBackendFlags" title="enum MateMixerBackendFlags"><span class="returnvalue">MateMixerBackendFlags</span></a>
mate_mixer_context_get_backend_flags (<em class="parameter"><code><a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context</code></em>);</pre>
<p>Gets the capability flags of the currently used sound system backend.</p>
<p>This function will not work until the <em class="parameter"><code>context</code></em>
is connected to a sound system.</p>
<div class="refsect3">
<a name="id-1.2.4.10.24.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.4.10.24.7"></a><h4>Returns</h4>
<p> the capability flags.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="MateMixerContext.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="MateMixerState"></a><h3>enum MateMixerState</h3>
<p>State of a connection to a sound system.</p>
<div class="refsect3">
<a name="id-1.2.4.11.2.4"></a><h4>Members</h4>
<div class="informaltable"><table 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="MATE-MIXER-STATE-IDLE:CAPS"></a>MATE_MIXER_STATE_IDLE</p></td>
<td class="enum_member_description">
<p> Not connected.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-STATE-CONNECTING:CAPS"></a>MATE_MIXER_STATE_CONNECTING</p></td>
<td class="enum_member_description">
<p> Connection is in progress.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-STATE-READY:CAPS"></a>MATE_MIXER_STATE_READY</p></td>
<td class="enum_member_description">
<p> Connected.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-STATE-FAILED:CAPS"></a>MATE_MIXER_STATE_FAILED</p></td>
<td class="enum_member_description">
<p> Connection has failed.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-STATE-UNKNOWN:CAPS"></a>MATE_MIXER_STATE_UNKNOWN</p></td>
<td class="enum_member_description">
<p> Unknown state. This state is used as an error indicator.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerBackendType"></a><h3>enum MateMixerBackendType</h3>
<p>Constants identifying a sound system backend.</p>
<div class="refsect3">
<a name="id-1.2.4.11.3.4"></a><h4>Members</h4>
<div class="informaltable"><table 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="MATE-MIXER-BACKEND-UNKNOWN:CAPS"></a>MATE_MIXER_BACKEND_UNKNOWN</p></td>
<td class="enum_member_description">
<p> Unknown or undefined sound system backend type.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-PULSEAUDIO:CAPS"></a>MATE_MIXER_BACKEND_PULSEAUDIO</p></td>
<td class="enum_member_description">
<p> PulseAudio sound system backend. It has the highest priority and
will be the first one to try when you call <a class="link" href="MateMixerContext.html#mate-mixer-context-open" title="mate_mixer_context_open ()"><code class="function">mate_mixer_context_open()</code></a>,
unless you select a specific sound system to connect to.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-ALSA:CAPS"></a>MATE_MIXER_BACKEND_ALSA</p></td>
<td class="enum_member_description">
<p> The Advanced Linux Sound Architecture sound system.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-OSS:CAPS"></a>MATE_MIXER_BACKEND_OSS</p></td>
<td class="enum_member_description">
<p> The Open Sound System.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-NULL:CAPS"></a>MATE_MIXER_BACKEND_NULL</p></td>
<td class="enum_member_description">
<p> Fallback backend which never fails to initialize, but provides no
functionality. This backend has the lowest priority and will be used
if you do not select a specific backend and it isn't possible to use
any of the other backends.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerBackendFlags"></a><h3>enum MateMixerBackendFlags</h3>
<p>Flags describing capabilities of a sound system.</p>
<div class="refsect3">
<a name="id-1.2.4.11.4.4"></a><h4>Members</h4>
<div class="informaltable"><table 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="MATE-MIXER-BACKEND-NO-FLAGS:CAPS"></a>MATE_MIXER_BACKEND_NO_FLAGS</p></td>
<td class="enum_member_description">
<p> No flags.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-HAS-APPLICATION-CONTROLS:CAPS"></a>MATE_MIXER_BACKEND_HAS_APPLICATION_CONTROLS</p></td>
<td class="enum_member_description">
<p> The sound system backend includes support for application stream controls,
allowing per-application volume control.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-HAS-STORED-CONTROLS:CAPS"></a>MATE_MIXER_BACKEND_HAS_STORED_CONTROLS</p></td>
<td class="enum_member_description">
<p> The sound system backend includes support for stored controls. See the
<a class="link" href="MateMixerStoredControl.html" title="MateMixerStoredControl"><span class="type">MateMixerStoredControl</span></a> description for more information.
The presence of this flag does not guarantee that this feature is enabled
in the sound system's configuration.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-CAN-SET-DEFAULT-INPUT-STREAM:CAPS"></a>MATE_MIXER_BACKEND_CAN_SET_DEFAULT_INPUT_STREAM</p></td>
<td class="enum_member_description">
<p> The sound system backend is able to change the current default input stream
using the <a class="link" href="MateMixerContext.html#mate-mixer-context-set-default-input-stream" title="mate_mixer_context_set_default_input_stream ()"><code class="function">mate_mixer_context_set_default_input_stream()</code></a> function.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="MATE-MIXER-BACKEND-CAN-SET-DEFAULT-OUTPUT-STREAM:CAPS"></a>MATE_MIXER_BACKEND_CAN_SET_DEFAULT_OUTPUT_STREAM</p></td>
<td class="enum_member_description">
<p> The sound system backend is able to change the current default output stream
using the <a class="link" href="MateMixerContext.html#mate-mixer-context-set-default-output-stream" title="mate_mixer_context_set_default_output_stream ()"><code class="function">mate_mixer_context_set_default_output_stream()</code></a> function.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext-struct"></a><h3>MateMixerContext</h3>
<pre class="programlisting">typedef struct _MateMixerContext MateMixerContext;</pre>
<p>The <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> structure contains only private data and should only
be accessed using the provided API.</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContextClass"></a><h3>struct MateMixerContextClass</h3>
<pre class="programlisting">struct MateMixerContextClass {
GObjectClass parent_class;
};
</pre>
<p>The class structure for <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.11.6.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><span class="type">GObjectClass</span> <em class="structfield"><code><a name="MateMixerContextClass.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></tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="MateMixerContext.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="MateMixerContext--app-icon"></a><h3>The <code class="literal">“app-icon”</code> property</h3>
<pre class="programlisting"> “app-icon” <span class="type">gchar</span> *</pre>
<p>The XDG icon name of the application.</p>
<p>Flags: Read / Write</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--app-id"></a><h3>The <code class="literal">“app-id”</code> property</h3>
<pre class="programlisting"> “app-id” <span class="type">gchar</span> *</pre>
<p>Identifier of the application (e.g. org.example.app).</p>
<p>Flags: Read / Write</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--app-name"></a><h3>The <code class="literal">“app-name”</code> property</h3>
<pre class="programlisting"> “app-name” <span class="type">gchar</span> *</pre>
<p>Localized human readable name of the application.</p>
<p>Flags: Read / Write</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--app-version"></a><h3>The <code class="literal">“app-version”</code> property</h3>
<pre class="programlisting"> “app-version” <span class="type">gchar</span> *</pre>
<p>Version of the application.</p>
<p>Flags: Read / Write</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--default-input-stream"></a><h3>The <code class="literal">“default-input-stream”</code> property</h3>
<pre class="programlisting"> “default-input-stream” <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> *</pre>
<p>The stream sound input most likely comes from by default.</p>
<p>See <a class="link" href="MateMixerContext.html#mate-mixer-context-set-default-input-stream" title="mate_mixer_context_set_default_input_stream ()"><code class="function">mate_mixer_context_set_default_input_stream()</code></a> for more information
about changing the default input stream.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--default-output-stream"></a><h3>The <code class="literal">“default-output-stream”</code> property</h3>
<pre class="programlisting"> “default-output-stream” <a class="link" href="MateMixerStream.html" title="MateMixerStream"><span class="type">MateMixerStream</span></a> *</pre>
<p>The stream sound output is most likely directed to by default.</p>
<p>See <a class="link" href="MateMixerContext.html#mate-mixer-context-set-default-output-stream" title="mate_mixer_context_set_default_output_stream ()"><code class="function">mate_mixer_context_set_default_output_stream()</code></a> for more information
about changing the default output stream.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--server-address"></a><h3>The <code class="literal">“server-address”</code> property</h3>
<pre class="programlisting"> “server-address” <span class="type">gchar</span> *</pre>
<p>Address of the sound server to connect to.</p>
<p>This feature is only supported by the PulseAudio sound system.
There is no need to specify an address in order to connect to the
local PulseAudio daemon.</p>
<p>Flags: Read / Write</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext--state"></a><h3>The <code class="literal">“state”</code> property</h3>
<pre class="programlisting"> “state” <a class="link" href="MateMixerContext.html#MateMixerState" title="enum MateMixerState"><span class="type">MateMixerState</span></a></pre>
<p>The current state of the connection to a sound system.</p>
<p>Flags: Read</p>
<p>Default value: MATE_MIXER_STATE_IDLE</p>
</div>
</div>
<div class="refsect1">
<a name="MateMixerContext.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="MateMixerContext-device-added"></a><h3>The <code class="literal">“device-added”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context,
<span class="type">gchar</span> *name,
<span class="type">gpointer</span> user_data)</pre>
<p>The signal is emitted each time a device is added to the system.</p>
<p>Use <a class="link" href="MateMixerContext.html#mate-mixer-context-get-device" title="mate_mixer_context_get_device ()"><code class="function">mate_mixer_context_get_device()</code></a> to get the <a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="type">MateMixerDevice</span></a>.</p>
<p>Note that at the time this signal is emitted, the streams and switches
of the device may not yet be known.</p>
<div class="refsect3">
<a name="id-1.2.4.13.2.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name of the added device</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 set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext-device-removed"></a><h3>The <code class="literal">“device-removed”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context,
<span class="type">gchar</span> *name,
<span class="type">gpointer</span> user_data)</pre>
<p>The signal is emitted each time a device is removed from the system.</p>
<p>When this signal is emitted, the device is no longer known to the library,
it will not be included in the device list provided by the
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-devices" title="mate_mixer_context_list_devices ()"><code class="function">mate_mixer_context_list_devices()</code></a> function and it is not possible to get
the device with <a class="link" href="MateMixerContext.html#mate-mixer-context-get-device" title="mate_mixer_context_get_device ()"><code class="function">mate_mixer_context_get_device()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.13.3.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name of the removed device</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 set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext-stored-control-added"></a><h3>The <code class="literal">“stored-control-added”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context,
<span class="type">gchar</span> *name,
<span class="type">gpointer</span> user_data)</pre>
<p>The signal is emitted each time a stored control is added.</p>
<p>Use <a class="link" href="MateMixerContext.html#mate-mixer-context-get-stored-control" title="mate_mixer_context_get_stored_control ()"><code class="function">mate_mixer_context_get_stored_control()</code></a> to get the <a class="link" href="MateMixerStoredControl.html" title="MateMixerStoredControl"><span class="type">MateMixerStoredControl</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.13.4.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name of the added stored control</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 set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext-stored-control-removed"></a><h3>The <code class="literal">“stored-control-removed”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context,
<span class="type">gchar</span> *name,
<span class="type">gpointer</span> user_data)</pre>
<p>The signal is emitted each time a stored control is removed.</p>
<p>When this signal is emitted, the stored control is no longer known to the
library, it will not be included in the stream list provided by the
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-stored-controls" title="mate_mixer_context_list_stored_controls ()"><code class="function">mate_mixer_context_list_stored_controls()</code></a> function and it is not possible to
get the stored control with <a class="link" href="MateMixerContext.html#mate-mixer-context-get-stored-control" title="mate_mixer_context_get_stored_control ()"><code class="function">mate_mixer_context_get_stored_control()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.13.5.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name of the removed stored control</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 set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext-stream-added"></a><h3>The <code class="literal">“stream-added”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context,
<span class="type">gchar</span> *name,
<span class="type">gpointer</span> user_data)</pre>
<p>The signal is emitted each time a stream is added.</p>
<p>This signal is emitted for streams which belong to devices as well as
streams which do not. If you are only interested in streams of a
specific device, the signal is also available in <a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="type">MateMixerDevice</span></a>.</p>
<p>Note that at the time this signal is emitted, the controls and switches
of the stream may not yet be known.</p>
<div class="refsect3">
<a name="id-1.2.4.13.6.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name of the added stream</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 set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
<hr>
<div class="refsect2">
<a name="MateMixerContext-stream-removed"></a><h3>The <code class="literal">“stream-removed”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a> *context,
<span class="type">gchar</span> *name,
<span class="type">gpointer</span> user_data)</pre>
<p>The signal is emitted each time a stream is removed.</p>
<p>When this signal is emitted, the stream is no longer known to the library,
it will not be included in the stream list provided by the
<a class="link" href="MateMixerContext.html#mate-mixer-context-list-streams" title="mate_mixer_context_list_streams ()"><code class="function">mate_mixer_context_list_streams()</code></a> function and it is not possible to get
the stream with <a class="link" href="MateMixerContext.html#mate-mixer-context-get-stream" title="mate_mixer_context_get_stream ()"><code class="function">mate_mixer_context_get_stream()</code></a>.</p>
<p>This signal is emitted for streams which belong to devices as well as
streams which do not. If you are only interested in streams of a
specific device, the signal is also available in <a class="link" href="MateMixerDevice.html" title="MateMixerDevice"><span class="type">MateMixerDevice</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.4.13.7.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="MateMixerContext.html" title="MateMixerContext"><span class="type">MateMixerContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>name of the removed stream</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 set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run First</p>
</div>
</div>
</div>
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