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| <a href="#gstreamer-GstFormat.description" class="shortcut">Description</a></span> |
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| <a name="gstreamer-GstFormat"></a><div class="titlepage"></div> |
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| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gstreamer-GstFormat.top_of_page"></a>GstFormat</span></h2> |
| <p>GstFormat — Dynamically register new data formats</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.functions"></a><h2>Functions</h2> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="functions_return"> |
| <col class="functions_name"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="function_type">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-format-get-name" title="gst_format_get_name ()">gst_format_get_name</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="/usr/share/gtk-doc/html/glibglib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-format-to-quark" title="gst_format_to_quark ()">gst_format_to_quark</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="returnvalue">GstFormat</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-format-register" title="gst_format_register ()">gst_format_register</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="returnvalue">GstFormat</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-format-get-by-nick" title="gst_format_get_by_nick ()">gst_format_get_by_nick</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-formats-contains" title="gst_formats_contains ()">gst_formats_contains</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type">const <a class="link" href="gstreamer-GstFormat.html#GstFormatDefinition" title="struct GstFormatDefinition"><span class="returnvalue">GstFormatDefinition</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-format-get-details" title="gst_format_get_details ()">gst_format_get_details</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| <tr> |
| <td class="function_type"> |
| <a class="link" href="gstreamer-GstIterator.html#GstIterator" title="struct GstIterator"><span class="returnvalue">GstIterator</span></a> * |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gstreamer-GstFormat.html#gst-format-iterate-definitions" title="gst_format_iterate_definitions ()">gst_format_iterate_definitions</a> <span class="c_punctuation">()</span> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.other"></a><h2>Types and Values</h2> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="name"> |
| <col class="description"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="datatype_keyword">enum</td> |
| <td class="function_name"><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat">GstFormat</a></td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"><a class="link" href="gstreamer-GstFormat.html#GST-FORMAT-PERCENT-MAX:CAPS" title="GST_FORMAT_PERCENT_MAX">GST_FORMAT_PERCENT_MAX</a></td> |
| </tr> |
| <tr> |
| <td class="define_keyword">#define</td> |
| <td class="function_name"><a class="link" href="gstreamer-GstFormat.html#GST-FORMAT-PERCENT-SCALE:CAPS" title="GST_FORMAT_PERCENT_SCALE">GST_FORMAT_PERCENT_SCALE</a></td> |
| </tr> |
| <tr> |
| <td class="datatype_keyword">struct</td> |
| <td class="function_name"><a class="link" href="gstreamer-GstFormat.html#GstFormatDefinition" title="struct GstFormatDefinition">GstFormatDefinition</a></td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.includes"></a><h2>Includes</h2> |
| <pre class="synopsis">#include <gst/gst.h> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.description"></a><h2>Description</h2> |
| <p>GstFormats functions are used to register a new format to the gstreamer |
| core. Formats can be used to perform seeking or conversions/query |
| operations.</p> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.functions_details"></a><h2>Functions</h2> |
| <div class="refsect2"> |
| <a name="gst-format-get-name"></a><h3>gst_format_get_name ()</h3> |
| <pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * |
| gst_format_get_name (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Get a printable name for the given format. Do not modify or free.</p> |
| <div class="refsect3"> |
| <a name="gst-format-get-name.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" 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>format</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-format-get-name.returns"></a><h4>Returns</h4> |
| <p> a reference to the static name of the format |
| or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the format is unknown. </p> |
| <p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-format-to-quark"></a><h3>gst_format_to_quark ()</h3> |
| <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a> |
| gst_format_to_quark (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Get the unique quark for the given format.</p> |
| <div class="refsect3"> |
| <a name="gst-format-to-quark.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" 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>format</p></td> |
| <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a></p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-format-to-quark.returns"></a><h4>Returns</h4> |
| <p> the quark associated with the format or 0 if the format |
| is unknown.</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-format-register"></a><h3>gst_format_register ()</h3> |
| <pre class="programlisting"><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="returnvalue">GstFormat</span></a> |
| gst_format_register (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *nick</code></em>, |
| <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *description</code></em>);</pre> |
| <p>Create a new GstFormat based on the nick or return an |
| already registered format with that nick.</p> |
| <div class="refsect3"> |
| <a name="gst-format-register.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" 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>nick</p></td> |
| <td class="parameter_description"><p>The nick of the new format</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>description</p></td> |
| <td class="parameter_description"><p>The description of the new format</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-format-register.returns"></a><h4>Returns</h4> |
| <p> A new GstFormat or an already registered format |
| with the same nick.</p> |
| <p>MT safe.</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-format-get-by-nick"></a><h3>gst_format_get_by_nick ()</h3> |
| <pre class="programlisting"><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="returnvalue">GstFormat</span></a> |
| gst_format_get_by_nick (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *nick</code></em>);</pre> |
| <p>Return the format registered with the given nick.</p> |
| <div class="refsect3"> |
| <a name="gst-format-get-by-nick.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" 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>nick</p></td> |
| <td class="parameter_description"><p>The nick of the format</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-format-get-by-nick.returns"></a><h4>Returns</h4> |
| <p> The format with <em class="parameter"><code>nick</code></em> |
| or GST_FORMAT_UNDEFINED |
| if the format was not registered.</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-formats-contains"></a><h3>gst_formats_contains ()</h3> |
| <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> |
| gst_formats_contains (<em class="parameter"><code>const <a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> *formats</code></em>, |
| <em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>See if the given format is inside the format array.</p> |
| <div class="refsect3"> |
| <a name="gst-formats-contains.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" 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>formats</p></td> |
| <td class="parameter_description"><p> The format array to search. </p></td> |
| <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>format</p></td> |
| <td class="parameter_description"><p>the format to find</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-formats-contains.returns"></a><h4>Returns</h4> |
| <p> <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the format is found inside the array</p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-format-get-details"></a><h3>gst_format_get_details ()</h3> |
| <pre class="programlisting">const <a class="link" href="gstreamer-GstFormat.html#GstFormatDefinition" title="struct GstFormatDefinition"><span class="returnvalue">GstFormatDefinition</span></a> * |
| gst_format_get_details (<em class="parameter"><code><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> format</code></em>);</pre> |
| <p>Get details about the given format.</p> |
| <div class="refsect3"> |
| <a name="gst-format-get-details.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" 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>format</p></td> |
| <td class="parameter_description"><p>The format to get details of</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-format-get-details.returns"></a><h4>Returns</h4> |
| <p> The <a class="link" href="gstreamer-GstFormat.html#GstFormatDefinition" title="struct GstFormatDefinition"><span class="type">GstFormatDefinition</span></a> for <em class="parameter"><code>format</code></em> |
| or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> |
| on failure.</p> |
| <p>MT safe. </p> |
| <p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="gst-format-iterate-definitions"></a><h3>gst_format_iterate_definitions ()</h3> |
| <pre class="programlisting"><a class="link" href="gstreamer-GstIterator.html#GstIterator" title="struct GstIterator"><span class="returnvalue">GstIterator</span></a> * |
| gst_format_iterate_definitions (<em class="parameter"><code><span class="type">void</span></code></em>);</pre> |
| <p>Iterate all the registered formats. The format definition is read |
| only.</p> |
| <div class="refsect3"> |
| <a name="gst-format-iterate-definitions.returns"></a><h4>Returns</h4> |
| <p> a GstIterator of <a class="link" href="gstreamer-GstFormat.html#GstFormatDefinition" title="struct GstFormatDefinition"><span class="type">GstFormatDefinition</span></a>. </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> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstFormat"></a><h3>enum GstFormat</h3> |
| <p>Standard predefined formats</p> |
| <div class="refsect3"> |
| <a name="GstFormat.members"></a><h4>Members</h4> |
| <div class="informaltable"><table class="informaltable" 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-FORMAT-UNDEFINED:CAPS"></a>GST_FORMAT_UNDEFINED</p></td> |
| <td class="enum_member_description"> |
| <p>undefined format</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FORMAT-DEFAULT:CAPS"></a>GST_FORMAT_DEFAULT</p></td> |
| <td class="enum_member_description"> |
| <p>the default format of the pad/element. This can be |
| samples for raw audio, frames/fields for raw video (some, but not all, |
| elements support this; use <em class="parameter"><code>GST_FORMAT_TIME</code></em> |
| if you don't have a good |
| reason to query for samples/frames)</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FORMAT-BYTES:CAPS"></a>GST_FORMAT_BYTES</p></td> |
| <td class="enum_member_description"> |
| <p>bytes</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FORMAT-TIME:CAPS"></a>GST_FORMAT_TIME</p></td> |
| <td class="enum_member_description"> |
| <p>time in nanoseconds</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FORMAT-BUFFERS:CAPS"></a>GST_FORMAT_BUFFERS</p></td> |
| <td class="enum_member_description"> |
| <p>buffers (few, if any, elements implement this as of |
| May 2009)</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FORMAT-PERCENT:CAPS"></a>GST_FORMAT_PERCENT</p></td> |
| <td class="enum_member_description"> |
| <p>percentage of stream (few, if any, elements implement |
| this as of May 2009)</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-FORMAT-PERCENT-MAX:CAPS"></a><h3>GST_FORMAT_PERCENT_MAX</h3> |
| <pre class="programlisting">#define GST_FORMAT_PERCENT_MAX G_GINT64_CONSTANT (1000000) |
| </pre> |
| <p>The PERCENT format is between 0 and this value</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GST-FORMAT-PERCENT-SCALE:CAPS"></a><h3>GST_FORMAT_PERCENT_SCALE</h3> |
| <pre class="programlisting">#define GST_FORMAT_PERCENT_SCALE G_GINT64_CONSTANT (10000) |
| </pre> |
| <p>The value used to scale down the reported PERCENT format value to |
| its real value.</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstFormatDefinition"></a><h3>struct GstFormatDefinition</h3> |
| <pre class="programlisting">struct GstFormatDefinition { |
| GstFormat value; |
| const gchar *nick; |
| const gchar *description; |
| GQuark quark; |
| }; |
| </pre> |
| <p>A format definition</p> |
| <div class="refsect3"> |
| <a name="GstFormatDefinition.members"></a><h4>Members</h4> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="300px" class="struct_members_name"> |
| <col class="struct_members_description"> |
| <col width="200px" class="struct_members_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="struct_member_name"><p><a class="link" href="gstreamer-GstFormat.html#GstFormat" title="enum GstFormat"><span class="type">GstFormat</span></a> <em class="structfield"><code><a name="GstFormatDefinition.value"></a>value</code></em>;</p></td> |
| <td class="struct_member_description"><p>The unique id of this format</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="GstFormatDefinition.nick"></a>nick</code></em>;</p></td> |
| <td class="struct_member_description"><p>A short nick of the format</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *<em class="structfield"><code><a name="GstFormatDefinition.description"></a>description</code></em>;</p></td> |
| <td class="struct_member_description"><p>A longer description of the format</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/glibglib-Quarks.html#GQuark"><span class="type">GQuark</span></a> <em class="structfield"><code><a name="GstFormatDefinition.quark"></a>quark</code></em>;</p></td> |
| <td class="struct_member_description"><p>A quark for the nick</p></td> |
| <td class="struct_member_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-GstFormat.see-also"></a><h2>See Also</h2> |
| <p><a class="link" href="GstPad.html" title="GstPad"><span class="type">GstPad</span></a>, <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a></p> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr>Generated by GTK-Doc V1.25</div> |
| </body> |
| </html> |