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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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232 lines
4.1 KiB
Text
232 lines
4.1 KiB
Text
<!-- ##### SECTION Title ##### -->
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GstPlugin
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<!-- ##### SECTION Short_Description ##### -->
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Dynamically loadable Elements
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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GStreamer is extensible so <classname>GstElements</classname> can be loaded at runtime. A plugin
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system can provide one or more of the following basic <application>GStreamer</application>
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objects factories:
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<itemizedlist>
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<listitem>
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<para>
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A #GstElementFactory: the components to build a pipeline.
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</para>
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</listitem>
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<listitem>
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<para>
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A #GstTypeFactory: A MIME type and an optional typefind function.
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</para>
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</listitem>
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<listitem>
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<para>
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A #GstAutoplugFactory: An object used to automatically construct pipelines.
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</para>
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</listitem>
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</itemizedlist>
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</para>
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<para>
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A plugin should export a symbol plugin_desc that is a struct of type #GstPluginDesc.
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the plugin loader will check the version of the core library the plugin was linked against
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and will create a new #GstPlugin. It will then call the #GstPluginInitFunc function
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that was provided in the plugin_desc.
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</para>
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<para>
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Optionally a new plugin is created with gst_plugin_new(). this function will return a handle
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to the GstPlugin or NULL if the plugin could not be created.
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</para>
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<para>
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Once you have a handle to a #GstPlugin, you can add the different types of factories
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to it with gst_plugin_add_factory(), gst_plugin_add_type(), gst_plugin_add_autoplugger().
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</para>
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<para>
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use gst_plugin_find(), gst_plugin_get_list(), gst_plugin_get_factory_list(), gst_plugin_get_type_list() and
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gst_plugin_get_autoplug_list() to query the plugin repository.
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</para>
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<para>
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Plugins are always automaticlly loaded so you don't need to call gst_plugin_load() explicitly
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to bring it into memory.
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</para>
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<!-- ##### SECTION See_Also ##### -->
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<para>
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#GstElement, #GstType, #GstAutoplug
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</para>
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<!-- ##### STRUCT GstPlugin ##### -->
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<para>
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</para>
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@name:
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@longname:
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@filename:
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@features:
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@numfeatures:
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@module:
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<!-- ##### USER_FUNCTION GstPluginInitFunc ##### -->
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<para>
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A plugin should provide a pointer to a function of this type in the plugin_desc struct.
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It will be called by the loader at statup.
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</para>
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@module: The <classname>GModule</classname> it was loaded from
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@plugin: The plugin object that can be used to register stuff for this plugin.
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@Returns: A boolean indicating success or failure.
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<!-- ##### STRUCT GstPluginDesc ##### -->
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<para>
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A plugins should export a variable of this type called plugin_desc. This plugin
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loaded will use this variable to initialize the plugin.
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</para>
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@major_version: The minor version of the gstreamer library this plugin was created with
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@minor_version: The minor version of the gstreamer library this plugin was created with
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@name: The name of the plugin
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@plugin_init: The init function of this plugin.
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<!-- ##### FUNCTION gst_plugin_new ##### -->
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<para>
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</para>
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@name:
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@major:
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@minor:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_set_name ##### -->
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<para>
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</para>
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@plugin:
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@name:
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<!-- ##### FUNCTION gst_plugin_get_name ##### -->
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<para>
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</para>
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@plugin:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_get_longname ##### -->
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<para>
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</para>
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@plugin:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_set_longname ##### -->
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<para>
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</para>
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@plugin:
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@longname:
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<!-- ##### FUNCTION gst_plugin_get_filename ##### -->
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<para>
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</para>
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@plugin:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_is_loaded ##### -->
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<para>
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</para>
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@plugin:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_load_all ##### -->
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<para>
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</para>
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<!-- ##### FUNCTION gst_plugin_load ##### -->
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<para>
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</para>
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@name:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_load_absolute ##### -->
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<para>
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</para>
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@name:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_add_path ##### -->
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<para>
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</para>
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@path:
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<!-- ##### FUNCTION gst_library_load ##### -->
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<para>
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</para>
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@name:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_find ##### -->
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<para>
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</para>
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@name:
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@Returns:
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<!-- ##### FUNCTION gst_plugin_get_list ##### -->
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<para>
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</para>
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@Returns:
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<!-- ##### FUNCTION gst_plugin_load_thyself ##### -->
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<para>
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</para>
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@parent:
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<!-- ##### FUNCTION gst_plugin_save_thyself ##### -->
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<para>
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</para>
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@parent:
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@Returns:
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