| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>typefind: GStreamer Core Plugins 1.0 Plugins Reference Manual</title> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> |
| <link rel="home" href="index.html" title="GStreamer Core Plugins 1.0 Plugins Reference Manual"> |
| <link rel="up" href="ch01.html" title="gstreamer Elements"> |
| <link rel="prev" href="gstreamer-plugins-tee.html" title="tee"> |
| <link rel="next" href="gstreamer-plugins-valve.html" title="valve"> |
| <meta name="generator" content="GTK-Doc V1.25 (XML mode)"> |
| <link rel="stylesheet" href="style.css" type="text/css"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> |
| <td width="100%" align="left" class="shortcuts"> |
| <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> |
| <a href="#gstreamer-plugins-typefind.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> |
| <a href="#gstreamer-plugins-typefind.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> |
| <a href="#gstreamer-plugins-typefind.properties" class="shortcut">Properties</a></span><span id="nav_signals"> <span class="dim">|</span> |
| <a href="#gstreamer-plugins-typefind.signals" class="shortcut">Signals</a></span> |
| </td> |
| <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> |
| <td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> |
| <td><a accesskey="p" href="gstreamer-plugins-tee.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> |
| <td><a accesskey="n" href="gstreamer-plugins-valve.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> |
| </tr></table> |
| <div class="refentry"> |
| <a name="gstreamer-plugins-typefind"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gstreamer-plugins-typefind.top_of_page"></a>typefind</span></h2> |
| <p>typefind</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.properties"></a><h2>Properties</h2> |
| <div class="informaltable"><table class="informaltable" border="0"> |
| <colgroup> |
| <col width="150px" class="properties_type"> |
| <col width="300px" class="properties_name"> |
| <col width="200px" class="properties_flags"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="property_type"> |
| <a href="../html/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *</td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement--caps" title="The “caps” property">caps</a></td> |
| <td class="property_flags">Read</td> |
| </tr> |
| <tr> |
| <td class="property_type"> |
| <a href="../html/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *</td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement--force-caps" title="The “force-caps” property">force-caps</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| <tr> |
| <td class="property_type"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></td> |
| <td class="property_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement--minimum" title="The “minimum” property">minimum</a></td> |
| <td class="property_flags">Read / Write</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.signals"></a><h2>Signals</h2> |
| <div class="informaltable"><table class="informaltable" border="0"> |
| <colgroup> |
| <col width="150px" class="signals_return"> |
| <col width="300px" class="signals_name"> |
| <col width="200px" class="signals_flags"> |
| </colgroup> |
| <tbody><tr> |
| <td class="signal_type"><span class="returnvalue">void</span></td> |
| <td class="signal_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement-have-type" title="The “have-type” signal">have-type</a></td> |
| <td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobjectgobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <a name="GstTypeFindElement"></a><div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.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">struct</td> |
| <td class="function_name"><a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement-struct" title="struct GstTypeFindElement">GstTypeFindElement</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct">GObject</a> |
| <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a href="../html/GstObject.html#GstObject-struct">GstObject</a> |
| <span class="lineart">╰──</span> <a href="../html/GstElement.html#GstElement-struct">GstElement</a> |
| <span class="lineart">╰──</span> GstTypeFindElement |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.description"></a><h2>Description</h2> |
| <p>Determines the media-type of a stream. It applies typefind functions in the |
| order of their rank. Once the type has been detected it sets its src pad caps |
| to the found media type.</p> |
| <p>Whenever a type is found the <a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement-have-type" title="The “have-type” signal"><span class="type">“have-type”</span></a> signal is |
| emitted, either from the streaming thread or the application thread |
| (the latter may happen when typefinding is done pull-based from the |
| state change function).</p> |
| <p>Plugins can register custom typefinders by using <a href="../html/GstTypeFindFactory.html#GstTypeFindFactory-struct"><span class="type">GstTypeFindFactory</span></a>.</p> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.20.8.5.1"></a><h3>Element Information</h3> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">plugin</span></p></td> |
| <td> |
| <a class="link" href="gstreamer-plugins-plugin-coreelements.html#plugin-coreelements">coreelements</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Benjamin Otte <in7y118@public.uni-hamburg.de></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Generic</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.20.8.5.2"></a><h3>Element Pads</h3> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">name</span></p></td> |
| <td>sink</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">direction</span></p></td> |
| <td>sink</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">presence</span></p></td> |
| <td>always</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">details</span></p></td> |
| <td>ANY</td> |
| </tr> |
| </tbody> |
| </table></div> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">name</span></p></td> |
| <td>src</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">direction</span></p></td> |
| <td>source</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">presence</span></p></td> |
| <td>always</td> |
| </tr> |
| <tr> |
| <td><p><span class="term">details</span></p></td> |
| <td>ANY</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstTypeFindElement-struct"></a><h3>struct GstTypeFindElement</h3> |
| <pre class="programlisting">struct GstTypeFindElement;</pre> |
| <p>Opaque <a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement"><span class="type">GstTypeFindElement</span></a> data structure</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstTypeFindElement--caps"></a><h3>The <code class="literal">“caps”</code> property</h3> |
| <pre class="programlisting"> “caps” <a href="../html/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *</pre> |
| <p>detected capabilities in stream.</p> |
| <p>Flags: Read</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstTypeFindElement--force-caps"></a><h3>The <code class="literal">“force-caps”</code> property</h3> |
| <pre class="programlisting"> “force-caps” <a href="../html/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *</pre> |
| <p>force caps without doing a typefind.</p> |
| <p>Flags: Read / Write</p> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="GstTypeFindElement--minimum"></a><h3>The <code class="literal">“minimum”</code> property</h3> |
| <pre class="programlisting"> “minimum” <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a></pre> |
| <p>minimum probability required to accept caps.</p> |
| <p>Flags: Read / Write</p> |
| <p>Allowed values: [1,100]</p> |
| <p>Default value: 1</p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gstreamer-plugins-typefind.signal-details"></a><h2>Signal Details</h2> |
| <div class="refsect2"> |
| <a name="GstTypeFindElement-have-type"></a><h3>The <code class="literal">“have-type”</code> signal</h3> |
| <pre class="programlisting"><span class="returnvalue">void</span> |
| user_function (<a class="link" href="gstreamer-plugins-typefind.html#GstTypeFindElement"><span class="type">GstTypeFindElement</span></a> *typefind, |
| <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a> probability, |
| <a href="../html/GstCaps.html#GstCaps-struct"><span class="type">GstCaps</span></a> *caps, |
| <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre> |
| <p>This signal gets emitted when the type and its probability has |
| been found.</p> |
| <div class="refsect3"> |
| <a name="GstTypeFindElement-have-type.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>typefind</p></td> |
| <td class="parameter_description"><p>the typefind instance</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>probability</p></td> |
| <td class="parameter_description"><p>the probability of the type found</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>caps</p></td> |
| <td class="parameter_description"><p>the caps of the type found</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="parameter_name"><p>user_data</p></td> |
| <td class="parameter_description"><p>user data set when the signal handler was connected.</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <p>Flags: <a href="/usr/share/gtk-doc/html/gobjectgobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p> |
| </div> |
| </div> |
| </div> |
| <div class="footer"> |
| <hr>Generated by GTK-Doc V1.25</div> |
| </body> |
| </html> |
