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<div class="refentry">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins"></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-gstpbutilsmissingplugins.top_of_page"></a>gstpbutilsmissingplugins</span></h2>
<p>gstpbutilsmissingplugins — Create, recognise and parse missing-plugins messages</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-plugin-message-get-installer-detail" title="gst_missing_plugin_message_get_installer_detail ()">gst_missing_plugin_message_get_installer_detail</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-plugin-message-get-description" title="gst_missing_plugin_message_get_description ()">gst_missing_plugin_message_get_description</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-is-missing-plugin-message" title="gst_is_missing_plugin_message ()">gst_is_missing_plugin_message</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-decoder-message-new" title="gst_missing_decoder_message_new ()">gst_missing_decoder_message_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-encoder-message-new" title="gst_missing_encoder_message_new ()">gst_missing_encoder_message_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-uri-source-message-new" title="gst_missing_uri_source_message_new ()">gst_missing_uri_source_message_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-uri-sink-message-new" title="gst_missing_uri_sink_message_new ()">gst_missing_uri_sink_message_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-element-message-new" title="gst_missing_element_message_new ()">gst_missing_element_message_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-uri-source-installer-detail-new" title="gst_missing_uri_source_installer_detail_new ()">gst_missing_uri_source_installer_detail_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-uri-sink-installer-detail-new" title="gst_missing_uri_sink_installer_detail_new ()">gst_missing_uri_sink_installer_detail_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-element-installer-detail-new" title="gst_missing_element_installer_detail_new ()">gst_missing_element_installer_detail_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-decoder-installer-detail-new" title="gst_missing_decoder_installer_detail_new ()">gst_missing_decoder_installer_detail_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-encoder-installer-detail-new" title="gst_missing_encoder_installer_detail_new ()">gst_missing_encoder_installer_detail_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gst/pbutils/missing-plugins.h>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins.description"></a><h2>Description</h2>
<div class="refsect2">
<a name="id-1.2.16.7.6.2"></a><p>
Functions to create, recognise and parse missing-plugins messages for
applications and elements.
</p>
<p>
Missing-plugin messages are posted on the bus by elements like decodebin
or playbin if they can't find an appropriate source element or decoder
element. The application can use these messages for two things:
</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>
concise error/problem reporting to the user mentioning what exactly
is missing, see <a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-plugin-message-get-description" title="gst_missing_plugin_message_get_description ()"><code class="function">gst_missing_plugin_message_get_description()</code></a>
</p></li>
<li class="listitem"><p>
initiate installation of missing plugins, see
<a class="link" href="gst-plugins-base-libs-gstpbutilsmissingplugins.html#gst-missing-plugin-message-get-installer-detail" title="gst_missing_plugin_message_get_installer_detail ()"><code class="function">gst_missing_plugin_message_get_installer_detail()</code></a> and
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a>
</p></li>
</ul></div>
<p>
</p>
<p>
Applications may also create missing-plugin messages themselves to install
required elements that are missing, using the install mechanism mentioned
above.
</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-missing-plugin-message-get-installer-detail"></a><h3>gst_missing_plugin_message_get_installer_detail ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_plugin_message_get_installer_detail
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a> *msg</code></em>);</pre>
<p>Returns an opaque string containing all the details about the missing
element to be passed to an external installer called via
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a> or <a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-sync" title="gst_install_plugins_sync ()"><code class="function">gst_install_plugins_sync()</code></a>.</p>
<p>This function is mainly for applications that call external plugin
installation mechanisms using one of the two above-mentioned functions.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.2.6"></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>msg</p></td>
<td class="parameter_description"><p>a missing-plugin <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a> of type <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GST-MESSAGE-ELEMENT:CAPS"><span class="type">GST_MESSAGE_ELEMENT</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.2.7"></a><h4>Returns</h4>
<p> a newly-allocated detail string, or NULL on error. Free string
with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-plugin-message-get-description"></a><h3>gst_missing_plugin_message_get_description ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_plugin_message_get_description
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a> *msg</code></em>);</pre>
<p>Returns a localised string describing the missing feature, for use in
error dialogs and the like. Should never return NULL unless <em class="parameter"><code>msg</code></em>
is not
a valid missing-plugin message.</p>
<p>This function is mainly for applications that need a human-readable string
describing a missing plugin, given a previously collected missing-plugin
message</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.3.6"></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>msg</p></td>
<td class="parameter_description"><p>a missing-plugin <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a> of type <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GST-MESSAGE-ELEMENT:CAPS"><span class="type">GST_MESSAGE_ELEMENT</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.3.7"></a><h4>Returns</h4>
<p> a newly-allocated description string, or NULL on error. Free
string with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-is-missing-plugin-message"></a><h3>gst_is_missing_plugin_message ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_is_missing_plugin_message (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a> *msg</code></em>);</pre>
<p>Checks whether <em class="parameter"><code>msg</code></em>
is a missing plugins message.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>msg</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.4.6"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>msg</code></em>
is a missing-plugins message, otherwise <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-decoder-message-new"></a><h3>gst_missing_decoder_message_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
gst_missing_decoder_message_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *decode_caps</code></em>);</pre>
<p>Creates a missing-plugin message for <em class="parameter"><code>element</code></em>
to notify the application
that a decoder element for a particular set of (fixed) caps is missing.
This function is mainly for use in plugins.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>element</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> posting the message</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>decode_caps</p></td>
<td class="parameter_description"><p>the (fixed) caps for which a decoder element is needed</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.5.6"></a><h4>Returns</h4>
<p> a new <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a>, or NULL on error. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-encoder-message-new"></a><h3>gst_missing_encoder_message_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
gst_missing_encoder_message_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *encode_caps</code></em>);</pre>
<p>Creates a missing-plugin message for <em class="parameter"><code>element</code></em>
to notify the application
that an encoder element for a particular set of (fixed) caps is missing.
This function is mainly for use in plugins.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.6.5"></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>element</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> posting the message</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>encode_caps</p></td>
<td class="parameter_description"><p>the (fixed) caps for which an encoder element is needed</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.6.6"></a><h4>Returns</h4>
<p> a new <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a>, or NULL on error. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-uri-source-message-new"></a><h3>gst_missing_uri_source_message_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
gst_missing_uri_source_message_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Creates a missing-plugin message for <em class="parameter"><code>element</code></em>
to notify the application
that a source element for a particular URI protocol is missing. This
function is mainly for use in plugins.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.7.5"></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>element</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> posting the message</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>protocol</p></td>
<td class="parameter_description"><p>the URI protocol the missing source needs to implement,
e.g. "http" or "mms"</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.7.6"></a><h4>Returns</h4>
<p> a new <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a>, or NULL on error. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-uri-sink-message-new"></a><h3>gst_missing_uri_sink_message_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
gst_missing_uri_sink_message_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Creates a missing-plugin message for <em class="parameter"><code>element</code></em>
to notify the application
that a sink element for a particular URI protocol is missing. This
function is mainly for use in plugins.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.8.5"></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>element</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> posting the message</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>protocol</p></td>
<td class="parameter_description"><p>the URI protocol the missing sink needs to implement,
e.g. "http" or "smb"</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.8.6"></a><h4>Returns</h4>
<p> a new <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a>, or NULL on error. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-element-message-new"></a><h3>gst_missing_element_message_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="returnvalue">GstMessage</span></a> *
gst_missing_element_message_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> *element</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *factory_name</code></em>);</pre>
<p>Creates a missing-plugin message for <em class="parameter"><code>element</code></em>
to notify the application
that a certain required element is missing. This function is mainly for
use in plugins.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.9.5"></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>element</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html"><span class="type">GstElement</span></a> posting the message</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>factory_name</p></td>
<td class="parameter_description"><p>the name of the missing element (element factory),
e.g. "videoscale" or "cdparanoiasrc"</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.9.6"></a><h4>Returns</h4>
<p> a new <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstMessage.html#GstMessage"><span class="type">GstMessage</span></a>, or NULL on error. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-uri-source-installer-detail-new"></a><h3>gst_missing_uri_source_installer_detail_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_uri_source_installer_detail_new
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Returns an opaque string containing all the details about the missing
element to be passed to an external installer called via
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a> or <a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-sync" title="gst_install_plugins_sync ()"><code class="function">gst_install_plugins_sync()</code></a>.</p>
<p>This function is mainly for applications that call external plugin
installation mechanisms using one of the two above-mentioned functions in
the case where the application knows exactly what kind of plugin it is
missing.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.10.6"></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>protocol</p></td>
<td class="parameter_description"><p>the URI protocol the missing source needs to implement,
e.g. "http" or "mms"</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.10.7"></a><h4>Returns</h4>
<p> a newly-allocated detail string, or NULL on error. Free string
with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
<p class="since">Since 0.10.15</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-uri-sink-installer-detail-new"></a><h3>gst_missing_uri_sink_installer_detail_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_uri_sink_installer_detail_new
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Returns an opaque string containing all the details about the missing
element to be passed to an external installer called via
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a> or <a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-sync" title="gst_install_plugins_sync ()"><code class="function">gst_install_plugins_sync()</code></a>.</p>
<p>This function is mainly for applications that call external plugin
installation mechanisms using one of the two above-mentioned functions in
the case where the application knows exactly what kind of plugin it is
missing.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.11.6"></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>protocol</p></td>
<td class="parameter_description"><p>the URI protocol the missing source needs to implement,
e.g. "http" or "mms"</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.11.7"></a><h4>Returns</h4>
<p> a newly-allocated detail string, or NULL on error. Free string
with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
<p class="since">Since 0.10.15</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-element-installer-detail-new"></a><h3>gst_missing_element_installer_detail_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_element_installer_detail_new
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *factory_name</code></em>);</pre>
<p>Returns an opaque string containing all the details about the missing
element to be passed to an external installer called via
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a> or <a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-sync" title="gst_install_plugins_sync ()"><code class="function">gst_install_plugins_sync()</code></a>.</p>
<p>This function is mainly for applications that call external plugin
installation mechanisms using one of the two above-mentioned functions in
the case where the application knows exactly what kind of plugin it is
missing.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.12.6"></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>factory_name</p></td>
<td class="parameter_description"><p>the name of the missing element (element factory),
e.g. "videoscale" or "cdparanoiasrc"</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.12.7"></a><h4>Returns</h4>
<p> a newly-allocated detail string, or NULL on error. Free string
with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
<p class="since">Since 0.10.15</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-decoder-installer-detail-new"></a><h3>gst_missing_decoder_installer_detail_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_decoder_installer_detail_new
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *decode_caps</code></em>);</pre>
<p>Returns an opaque string containing all the details about the missing
element to be passed to an external installer called via
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a> or <a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-sync" title="gst_install_plugins_sync ()"><code class="function">gst_install_plugins_sync()</code></a>.</p>
<p>This function is mainly for applications that call external plugin
installation mechanisms using one of the two above-mentioned functions in
the case where the application knows exactly what kind of plugin it is
missing.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.13.6"></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>decode_caps</p></td>
<td class="parameter_description"><p>the (fixed) caps for which a decoder element is needed</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.13.7"></a><h4>Returns</h4>
<p> a newly-allocated detail string, or NULL on error. Free string
with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
<p class="since">Since 0.10.15</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-missing-encoder-installer-detail-new"></a><h3>gst_missing_encoder_installer_detail_new ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_missing_encoder_installer_detail_new
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *encode_caps</code></em>);</pre>
<p>Returns an opaque string containing all the details about the missing
element to be passed to an external installer called via
<a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-async" title="gst_install_plugins_async ()"><code class="function">gst_install_plugins_async()</code></a> or <a class="link" href="gst-plugins-base-libs-gstpbutilsinstallplugins.html#gst-install-plugins-sync" title="gst_install_plugins_sync ()"><code class="function">gst_install_plugins_sync()</code></a>.</p>
<p>This function is mainly for applications that call external plugin
installation mechanisms using one of the two above-mentioned functions in
the case where the application knows exactly what kind of plugin it is
missing.</p>
<div class="refsect3">
<a name="id-1.2.16.7.7.14.6"></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>encode_caps</p></td>
<td class="parameter_description"><p>the (fixed) caps for which an encoder element is needed</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.7.7.14.7"></a><h4>Returns</h4>
<p> a newly-allocated detail string, or NULL on error. Free string
with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when not needed any longer.</p>
<p></p>
</div>
<p class="since">Since 0.10.15</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilsmissingplugins.other_details"></a><h2>Types and Values</h2>
</div>
</div>
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