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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>GStreamer Base Plugins 0.10 Library Reference Manual: gstmixertrack</title>
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                  <a href="#gst-plugins-base-libs-gstmixertrack.properties" class="shortcut">Properties</a></span>
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<div class="refentry">
<a name="gst-plugins-base-libs-gstmixertrack"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstmixertrack.top_of_page"></a>gstmixertrack</span></h2>
<p>gstmixertrack — Basic mixer control object (volume slider, switch)</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.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="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GST-MIXER-TRACK-HAS-FLAG:CAPS" title="GST_MIXER_TRACK_HAS_FLAG()">GST_MIXER_TRACK_HAS_FLAG</a><span class="c_punctuation">()</span>
</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--flags" title="The “flags” property">flags</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--index" title="The “index” property">index</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--label" title="The “label” property">label</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--max-volume" title="The “max-volume” property">max-volume</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--min-volume" title="The “min-volume” property">min-volume</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--num-channels" title="The “num-channels” property">num-channels</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack--untranslated-label" title="The “untranslated-label” property">untranslated-label</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstMixerTrack"></a><div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrack-struct" title="struct GstMixerTrack">GstMixerTrack</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GstMixerTrackFlags" title="enum GstMixerTrackFlags">GstMixerTrackFlags</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.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> GstMixerTrack
        <span class="lineart">╰──</span> <a class="link" href="gst-plugins-base-libs-gstmixeroptions.html#GstMixerOptions">GstMixerOptions</a>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/interfaces/mixer.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.description"></a><h2>Description</h2>
<p>Basic mixer control object (note that it is a GObject and not a GstObject).</p>
<p>A mixer track represents a single slider control of none, one or more
channels. A mixer track with no channels is usually interpreted as a
on/off switch control.</p>
<p>Note the presence of both min_volume and max_volume fields. Applications
must not assume that min_volume is 0 or max_volume is any particular
value.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GST-MIXER-TRACK-HAS-FLAG:CAPS"></a><h3>GST_MIXER_TRACK_HAS_FLAG()</h3>
<pre class="programlisting">#define             GST_MIXER_TRACK_HAS_FLAG(channel, flag)</pre>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstMixerTrack-struct"></a><h3>struct GstMixerTrack</h3>
<pre class="programlisting">struct GstMixerTrack;</pre>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrackFlags"></a><h3>enum GstMixerTrackFlags</h3>
<p>Mixer track flags.</p>
<div class="refsect3">
<a name="id-1.2.9.7.11.3.4"></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="GST-MIXER-TRACK-INPUT:CAPS"></a>GST_MIXER_TRACK_INPUT</p></td>
<td class="enum_member_description">
<p>mixer track is for input</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-OUTPUT:CAPS"></a>GST_MIXER_TRACK_OUTPUT</p></td>
<td class="enum_member_description">
<p>mixer track is for output</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-MUTE:CAPS"></a>GST_MIXER_TRACK_MUTE</p></td>
<td class="enum_member_description">
<p>input or output is muted</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-RECORD:CAPS"></a>GST_MIXER_TRACK_RECORD</p></td>
<td class="enum_member_description">
<p>input is audible in speakers attached to output
    (for <a class="link" href="gst-plugins-base-libs-gstmixertrack.html#GST-MIXER-TRACK-INPUT:CAPS"><span class="type">GST_MIXER_TRACK_INPUT</span></a> mixer tracks only)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-MASTER:CAPS"></a>GST_MIXER_TRACK_MASTER</p></td>
<td class="enum_member_description">
<p>this mixer track is likely to be the master control</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-SOFTWARE:CAPS"></a>GST_MIXER_TRACK_SOFTWARE</p></td>
<td class="enum_member_description">
<p>mixer track's' volume control is implemented
    in software (as opposed to a hardware control)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-NO-RECORD:CAPS"></a>GST_MIXER_TRACK_NO_RECORD</p></td>
<td class="enum_member_description">
<p>input track lacks support for recordable.
    Since: 0.10.23</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-NO-MUTE:CAPS"></a>GST_MIXER_TRACK_NO_MUTE</p></td>
<td class="enum_member_description">
<p>play track doesn't support mute. Since: 0.10.23</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-WHITELIST:CAPS"></a>GST_MIXER_TRACK_WHITELIST</p></td>
<td class="enum_member_description">
<p>track should be displayed "by default" in apps.
    Since: 0.10.23</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-READONLY:CAPS"></a>GST_MIXER_TRACK_READONLY</p></td>
<td class="enum_member_description">
<p>track is read-only. Since: 0.10.25</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-MIXER-TRACK-WRITEONLY:CAPS"></a>GST_MIXER_TRACK_WRITEONLY</p></td>
<td class="enum_member_description">
<p>track is write-only. Since: 0.10.25</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstMixerTrack--flags"></a><h3>The <code class="literal">“flags”</code> property</h3>
<pre class="programlisting">  “flags”                    <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Flags indicating the type of mixer track.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrack--index"></a><h3>The <code class="literal">“index”</code> property</h3>
<pre class="programlisting">  “index”                    <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Index of the mixer track, if available. Mixer track implementations
must set this at construct time. This can be used to discern between
multiple tracks with identical labels.</p>
<p>Flags: Read / Write / Construct Only</p>
<p>Default value: 0</p>
<p class="since">Since 0.10.21</p>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrack--label"></a><h3>The <code class="literal">“label”</code> property</h3>
<pre class="programlisting">  “label”                    <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The label assigned to the track (may be translated).</p>
<p>Flags: Read</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrack--max-volume"></a><h3>The <code class="literal">“max-volume”</code> property</h3>
<pre class="programlisting">  “max-volume”               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p>The maximum possible volume level.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrack--min-volume"></a><h3>The <code class="literal">“min-volume”</code> property</h3>
<pre class="programlisting">  “min-volume”               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p>The minimum possible volume level.</p>
<p>Flags: Read</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrack--num-channels"></a><h3>The <code class="literal">“num-channels”</code> property</h3>
<pre class="programlisting">  “num-channels”             <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a></pre>
<p>The number of channels contained within the track.</p>
<p>Flags: Read</p>
<p>Allowed values: &gt;= 0</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GstMixerTrack--untranslated-label"></a><h3>The <code class="literal">“untranslated-label”</code> property</h3>
<pre class="programlisting">  “untranslated-label”       <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The untranslated label of the mixer track, if available. Mixer track
implementations must set this at construct time. Applications may find
this useful to determine icons for various kind of tracks. However,
applications mustn't make any assumptions about the naming of tracks,
the untranslated labels are purely informational and may change.</p>
<p>Flags: Read / Write / Construct Only</p>
<p>Default value: NULL</p>
<p class="since">Since 0.10.13</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstmixertrack.see-also"></a><h2>See Also</h2>
<p>GstMixer, GstMixerOptions</p>
</div>
</div>
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