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<a href="#gst-plugins-base-libs-gsttuner.signals" class="shortcut">Signals</a>
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<div class="refentry">
<a name="gst-plugins-base-libs-gsttuner"></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-gsttuner.top_of_page"></a>gsttuner</span></h2>
<p>gsttuner — Interface for elements providing tuner operations</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gst-plugins-base-libs-gsttuner.synopsis"></a><h2>Synopsis</h2>
<a name="GstTuner"></a><pre class="synopsis">
#include <gst/interfaces/tuner.h>
<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-struct" title="GstTuner">GstTuner</a>;
struct <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTunerClass" title="struct GstTunerClass">GstTunerClass</a>;
const <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-list-channels" title="gst_tuner_list_channels ()">gst_tuner_list_channels</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);
<a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="returnvalue">GstTunerChannel</span></a> * <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-get-channel" title="gst_tuner_get_channel ()">gst_tuner_get_channel</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-set-channel" title="gst_tuner_set_channel ()">gst_tuner_set_channel</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);
const <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-list-norms" title="gst_tuner_list_norms ()">gst_tuner_list_norms</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);
<a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="returnvalue">GstTunerNorm</span></a> * <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-get-norm" title="gst_tuner_get_norm ()">gst_tuner_get_norm</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-set-norm" title="gst_tuner_set_norm ()">gst_tuner_set_norm</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> *norm</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="returnvalue">gulong</span></a> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-get-frequency" title="gst_tuner_get_frequency ()">gst_tuner_get_frequency</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-set-frequency" title="gst_tuner_set_frequency ()">gst_tuner_set_frequency</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="type">gulong</span></a> frequency</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-signal-strength" title="gst_tuner_signal_strength ()">gst_tuner_signal_strength</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);
<a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="returnvalue">GstTunerNorm</span></a> * <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-find-norm-by-name" title="gst_tuner_find_norm_by_name ()">gst_tuner_find_norm_by_name</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *norm</code></em>);
<a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="returnvalue">GstTunerChannel</span></a> * <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-find-channel-by-name" title="gst_tuner_find_channel_by_name ()">gst_tuner_find_channel_by_name</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *channel</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-channel-changed" title="gst_tuner_channel_changed ()">gst_tuner_channel_changed</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-norm-changed" title="gst_tuner_norm_changed ()">gst_tuner_norm_changed</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> *norm</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-frequency-changed" title="gst_tuner_frequency_changed ()">gst_tuner_frequency_changed</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="type">gulong</span></a> frequency</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-signal-changed" title="gst_tuner_signal_changed ()">gst_tuner_signal_changed</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> signal</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttuner.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GInterface
+----GstTuner
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttuner.prerequisites"></a><h2>Prerequisites</h2>
<p>
GstTuner requires
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstImplementsInterface.html">GstImplementsInterface</a> and <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttuner.signals"></a><h2>Signals</h2>
<pre class="synopsis">
"<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-channel-changed" title='The "channel-changed" signal'>channel-changed</a>" : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
"<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-frequency-changed" title='The "frequency-changed" signal'>frequency-changed</a>" : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
"<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-norm-changed" title='The "norm-changed" signal'>norm-changed</a>" : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
"<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-signal-changed" title='The "signal-changed" signal'>signal-changed</a>" : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttuner.description"></a><h2>Description</h2>
<p>
</p>
<div class="refsect2">
<a name="idp17049216"></a><p>
The GstTuner interface is provided by elements that have the ability to
tune into multiple input signals, for example TV or radio capture cards.
</p>
<p>
The interpretation of 'tuning into' an input stream depends on the element
implementing the interface. For v4lsrc, it might imply selection of an
input source and/or frequency to be configured on a TV card. Another
GstTuner implementation might be to allow selection of an active input pad
from multiple input pads.
</p>
<p>
That said, the GstTuner interface functions are biased toward the
TV capture scenario.
</p>
<p>
The general parameters provided are for configuration are:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">Selection of a current <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>. The current channel
represents the input source (e.g. Composite, S-Video etc for TV capture).
</li>
<li class="listitem">The <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> for the channel. The norm chooses the
interpretation of the incoming signal for the current channel. For example,
PAL or NTSC, or more specific variants there-of.
</li>
<li class="listitem">Channel frequency. If the current channel has the ability to tune
between multiple frequencies (if it has the GST_TUNER_CHANNEL_FREQUENCY flag)
then the frequency can be changed/retrieved via the
<a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-set-frequency" title="gst_tuner_set_frequency ()"><code class="function">gst_tuner_set_frequency()</code></a> and <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-get-frequency" title="gst_tuner_get_frequency ()"><code class="function">gst_tuner_get_frequency()</code></a> methods.
</li>
</ul></div>
<p>
</p>
<p>
Where applicable, the signal strength can be retrieved and/or monitored
via a signal.
</p>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttuner.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstTuner-struct"></a><h3>GstTuner</h3>
<pre class="programlisting">typedef struct _GstTuner GstTuner;</pre>
</div>
<hr>
<div class="refsect2">
<a name="GstTunerClass"></a><h3>struct GstTunerClass</h3>
<pre class="programlisting">struct GstTunerClass {
GTypeInterface klass;
/* virtual functions */
const GList * (* list_channels) (GstTuner *tuner);
void (* set_channel) (GstTuner *tuner,
GstTunerChannel *channel);
GstTunerChannel *
(* get_channel) (GstTuner *tuner);
const GList * (* list_norms) (GstTuner *tuner);
void (* set_norm) (GstTuner *tuner,
GstTunerNorm *norm);
GstTunerNorm *(* get_norm) (GstTuner *tuner);
void (* set_frequency) (GstTuner *tuner,
GstTunerChannel *channel,
gulong frequency);
gulong (* get_frequency) (GstTuner *tuner,
GstTunerChannel *channel);
gint (* signal_strength) (GstTuner *tuner,
GstTunerChannel *channel);
/* signals */
void (*channel_changed) (GstTuner *tuner,
GstTunerChannel *channel);
void (*norm_changed) (GstTuner *tuner,
GstTunerNorm *norm);
void (*frequency_changed) (GstTuner *tuner,
GstTunerChannel *channel,
gulong frequency);
void (*signal_changed) (GstTuner *tuner,
GstTunerChannel *channel,
gint signal);
};
</pre>
<p>
Tuner interface.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GstTunerClass.klass"></a>klass</code></em>;</span></p></td>
<td>the parent interface</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.list-channels"></a>list_channels</code></em> ()</span></p></td>
<td>list available channels</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.set-channel"></a>set_channel</code></em> ()</span></p></td>
<td>set to a channel</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.get-channel"></a>get_channel</code></em> ()</span></p></td>
<td>return the current channel</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.list-norms"></a>list_norms</code></em> ()</span></p></td>
<td>list available norms</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.set-norm"></a>set_norm</code></em> ()</span></p></td>
<td>set a norm</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.get-norm"></a>get_norm</code></em> ()</span></p></td>
<td>return the current norm</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.set-frequency"></a>set_frequency</code></em> ()</span></p></td>
<td>set the frequency</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.get-frequency"></a>get_frequency</code></em> ()</span></p></td>
<td>return the current frequency</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.signal-strength"></a>signal_strength</code></em> ()</span></p></td>
<td>get the signal strength</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.channel-changed"></a>channel_changed</code></em> ()</span></p></td>
<td>default handler for channel changed notification</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.norm-changed"></a>norm_changed</code></em> ()</span></p></td>
<td>default handler for norm changed notification</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.frequency-changed"></a>frequency_changed</code></em> ()</span></p></td>
<td>default handler for frequency changed notification</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="GstTunerClass.signal-changed"></a>signal_changed</code></em> ()</span></p></td>
<td>default handler for signal-strength changed notification</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-list-channels"></a><h3>gst_tuner_list_channels ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * gst_tuner_list_channels (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);</pre>
<p>
Retrieve a <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannels</span></a> available
(e.g. 'composite', 's-video', ...) from the given tuner object.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) to get the channels from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A list of channels available on this tuner. The list is
owned by the GstTuner and must not be freed.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-get-channel"></a><h3>gst_tuner_get_channel ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="returnvalue">GstTunerChannel</span></a> * gst_tuner_get_channel (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);</pre>
<p>
Retrieve the current channel from the tuner.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) to get the current channel from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the current channel of the tuner object.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-set-channel"></a><h3>gst_tuner_set_channel ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_set_channel (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);</pre>
<p>
Tunes the object to the given channel, which should be one of the
channels returned by <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-list-channels" title="gst_tuner_list_channels ()"><code class="function">gst_tuner_list_channels()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) that owns the channel.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>the channel to tune to.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-list-norms"></a><h3>gst_tuner_list_norms ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * gst_tuner_list_norms (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);</pre>
<p>
Retrieve a GList of available <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> settings for the currently
tuned channel on the given tuner object.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (*a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) to get the list of norms from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A list of norms available on the current channel for this
tuner object. The list is owned by the GstTuner and must not
be freed.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-get-norm"></a><h3>gst_tuner_get_norm ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="returnvalue">GstTunerNorm</span></a> * gst_tuner_get_norm (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>);</pre>
<p>
Get the current video norm from the given tuner object for the
currently selected channel.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) to get the current norm from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the current norm.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-set-norm"></a><h3>gst_tuner_set_norm ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_set_norm (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> *norm</code></em>);</pre>
<p>
Changes the video norm on this tuner to the given norm, which should be
one of the norms returned by <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-list-norms" title="gst_tuner_list_norms ()"><code class="function">gst_tuner_list_norms()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) to set the norm on.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>norm</code></em> :</span></p></td>
<td>the norm to use for the current channel.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-get-frequency"></a><h3>gst_tuner_get_frequency ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="returnvalue">gulong</span></a> gst_tuner_get_frequency (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);</pre>
<p>
Retrieve the current frequency from the given channel. As for
<a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-set-frequency" title="gst_tuner_set_frequency ()"><code class="function">gst_tuner_set_frequency()</code></a>, the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> must support frequency
operations, as indicated by the GST_TUNER_CHANNEL_FREQUENCY flag.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>The <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) that owns the given channel.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>The <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> to retrieve the frequency from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The current frequency, or 0 on error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-set-frequency"></a><h3>gst_tuner_set_frequency ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_set_frequency (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="type">gulong</span></a> frequency</code></em>);</pre>
<p>
Sets a tuning frequency on the given tuner/channel. Note that this
requires the given channel to be a "tuning" channel, which can be
checked using <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GST-TUNER-CHANNEL-HAS-FLAG:CAPS" title="GST_TUNER_CHANNEL_HAS_FLAG()"><code class="function">GST_TUNER_CHANNEL_HAS_FLAG()</code></a>, with the proper flag
being GST_TUNER_CHANNEL_FREQUENCY.
</p>
<p>
The frequency is in Hz, with minimum steps indicated by the
frequency_multiplicator provided in the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>. The
valid range is provided in the min_frequency and max_frequency properties
of the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>The <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) that owns the given channel.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>The <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> to set the frequency on.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>frequency</code></em> :</span></p></td>
<td>The frequency to tune in to.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-signal-strength"></a><h3>gst_tuner_signal_strength ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_tuner_signal_strength (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);</pre>
<p>
Get the strength of the signal on this channel. Note that this
requires the current channel to be a "tuning" channel, i.e. a
channel on which frequency can be set. This can be checked using
<a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GST-TUNER-CHANNEL-HAS-FLAG:CAPS" title="GST_TUNER_CHANNEL_HAS_FLAG()"><code class="function">GST_TUNER_CHANNEL_HAS_FLAG()</code></a>, and the appropriate flag to check
for is GST_TUNER_CHANNEL_FREQUENCY.
</p>
<p>
The valid range of the signal strength is indicated in the
min_signal and max_signal properties of the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> (a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a>) that owns the given channel.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> to get the signal strength from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Signal strength, or 0 on error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-find-norm-by-name"></a><h3>gst_tuner_find_norm_by_name ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="returnvalue">GstTunerNorm</span></a> * gst_tuner_find_norm_by_name (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *norm</code></em>);</pre>
<p>
Look up a <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> by name.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> instance</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>norm</code></em> :</span></p></td>
<td>A string containing the name of a <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a>, or NULL if no norm with the provided name
is available.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-find-channel-by-name"></a><h3>gst_tuner_find_channel_by_name ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="returnvalue">GstTunerChannel</span></a> * gst_tuner_find_channel_by_name (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *channel</code></em>);</pre>
<p>
Look up a <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> by name.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> instance</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>A string containing the name of a <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>, or NULL if no channel with the provided name
is available.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-channel-changed"></a><h3>gst_tuner_channel_changed ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_channel_changed (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>);</pre>
<p>
Called by elements implementing the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> interface when the
current channel changes. Fires the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-channel-changed" title='The "channel-changed" signal'><span class="type">"channel-changed"</span></a> signal.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> instance</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> instance</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-norm-changed"></a><h3>gst_tuner_norm_changed ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_norm_changed (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> *norm</code></em>);</pre>
<p>
Called by elements implementing the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> interface when the
current norm changes. Fires the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-norm-changed" title='The "norm-changed" signal'><span class="type">"norm-changed"</span></a> signal.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> instance</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>norm</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> instance</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-frequency-changed"></a><h3>gst_tuner_frequency_changed ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_frequency_changed (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="type">gulong</span></a> frequency</code></em>);</pre>
<p>
Called by elements implementing the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> interface when the
configured frequency changes. Fires the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-frequency-changed" title='The "frequency-changed" signal'><span class="type">"frequency-changed"</span></a>
signal on the tuner, and the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel-frequency-changed" title='The "frequency-changed" signal'><span class="type">"frequency-changed"</span></a> signal
on the channel.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> instance</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>The current <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>frequency</code></em> :</span></p></td>
<td>The new frequency setting</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tuner-signal-changed"></a><h3>gst_tuner_signal_changed ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_tuner_signal_changed (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> signal</code></em>);</pre>
<p>
Called by elements implementing the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> interface when the
incoming signal strength changes. Fires the <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner-signal-changed" title='The "signal-changed" signal'><span class="type">"signal-changed"</span></a>
signal on the tuner and the <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel-signal-changed" title='The "signal-changed" signal'><span class="type">"signal-changed"</span></a> signal on
the channel.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>A <a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> instance</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>The current <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>signal</code></em> :</span></p></td>
<td>The new signal strength</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gsttuner.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GstTuner-channel-changed"></a><h3>The <code class="literal">"channel-changed"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner,
<a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Reports that the current <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> has changed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>The element providing the GstTuner interface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>The new configured channel.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstTuner-frequency-changed"></a><h3>The <code class="literal">"frequency-changed"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner,
<a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *frequency,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gulong"><span class="type">gulong</span></a> arg2,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Reports that the current frequency has changed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>The element providing the GstTuner interface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>frequency</code></em> :</span></p></td>
<td>The new frequency (an unsigned long)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstTuner-norm-changed"></a><h3>The <code class="literal">"norm-changed"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner,
<a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> *norm,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Reports that the current <a class="link" href="gst-plugins-base-libs-gsttunernorm.html#GstTunerNorm"><span class="type">GstTunerNorm</span></a> has changed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>The element providing the GstTuner interface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>norm</code></em> :</span></p></td>
<td>The new configured norm.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstTuner-signal-changed"></a><h3>The <code class="literal">"signal-changed"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="gst-plugins-base-libs-gsttuner.html#GstTuner"><span class="type">GstTuner</span></a> *tuner,
<a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a> *channel,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> signal,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS"><code class="literal">Run Last</code></a></pre>
<p>
Reports that the signal strength has changed.
</p>
<p>
See Also: <a class="link" href="gst-plugins-base-libs-gsttuner.html#gst-tuner-signal-strength" title="gst_tuner_signal_strength ()"><code class="function">gst_tuner_signal_strength()</code></a>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>tuner</code></em> :</span></p></td>
<td>The element providing the GstTuner interface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>channel</code></em> :</span></p></td>
<td>The current <a class="link" href="gst-plugins-base-libs-gsttunerchannel.html#GstTunerChannel"><span class="type">GstTunerChannel</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>signal</code></em> :</span></p></td>
<td>The new signal strength (an integer)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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