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Original commit message from CVS: * docs/gst/tmpl/gstelementfactory.sgml: * gst/gstelement.h: * gst/gstelementfactory.c: (gst_element_factory_init), (gst_element_factory_cleanup), (gst_element_register), (__gst_element_factory_add_static_pad_template), (gst_element_factory_get_static_pad_templates), (gst_element_factory_can_src_caps), (gst_element_factory_can_sink_caps): * gst/registries/Makefile.am: * gst/registries/gstlibxmlregistry.c: (gst_xml_registry_get_type), (gst_xml_registry_class_init), (gst_xml_registry_init), (gst_xml_registry_new), (gst_xml_registry_set_property), (gst_xml_registry_get_property), (get_time), (make_dir), (gst_xml_registry_get_perms_func), (plugin_times_older_than_recurse), (plugin_times_older_than), (gst_xml_registry_open_func), (gst_xml_registry_load_func), (gst_xml_registry_save_func), (gst_xml_registry_close_func), (add_to_char_array), (read_string), (read_uint), (read_enum), (load_pad_template), (load_feature), (load_plugin), (load_paths), (gst_xml_registry_load), (gst_xml_registry_load_plugin), (gst_xml_registry_save_caps), (gst_xml_registry_save_pad_template), (gst_xml_registry_save_feature), (gst_xml_registry_save_plugin), (gst_xml_registry_save), (gst_xml_registry_rebuild_recurse), (gst_xml_registry_rebuild): * gst/registries/gstlibxmlregistry.h: * tools/gst-compprep.c: (main): * tools/gst-inspect.c: (print_pad_templates_info): * tools/gst-xmlinspect.c: (print_element_info): Use libxml2 for registry parsing, use staticpadtemplates in elementfactories. Makes gst_init() +/- 10x faster.
177 lines
2.9 KiB
Text
177 lines
2.9 KiB
Text
<!-- ##### SECTION Title ##### -->
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GstElementFactory
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<!-- ##### SECTION Short_Description ##### -->
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Create GstElements from a factory
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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GstElementFactory is used to create instances of elements. A GstElementfactory
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can be added to a #GstPlugin as it is also a #GstPluginFeature.
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</para>
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<para>
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Use gst_element_factory_new() to create a new factory which can be added to a plugin
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with gst_plugin_add_feature().
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</para>
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<para>
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gst_element_factory_add_pad_template() is used to add a padtemplate to the factory.
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This function will enable the application to query for elementfactories that handle
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a specific media type.
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</para>
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<para>
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Use the gst_element_factory_find() and gst_element_factory_create() functions
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to create element instances or use gst_element_factory_make() as a convenient
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shortcut.
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</para>
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<para>
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The following code example shows you how to create a GstFileSrc element.
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</para>
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<para>
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<programlisting role="C">
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#include <gst/gst.h>
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GstElement *src;
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GstElementFactory *srcfactory;
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gst_init(&argc,&argv);
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srcfactory = gst_element_factory_find("filesrc");
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g_return_if_fail(srcfactory != NULL);
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src = gst_element_factory_create(srcfactory,"src");
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g_return_if_fail(src != NULL);
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...
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</programlisting>
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</para>
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<para>
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An elementfactory can be assigned a rank with gst_element_factory_set_rank()
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so that the autopluggers can select a plugin more appropriatly
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</para>
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<!-- ##### SECTION See_Also ##### -->
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<para>
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#GstElement, #GstPlugin, #GstPluginFeature, #GstPadTemplate.
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</para>
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<!-- ##### STRUCT GstElementFactory ##### -->
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<para>
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</para>
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<!-- ##### FUNCTION gst_element_register ##### -->
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<para>
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</para>
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@plugin:
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@name:
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@rank:
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@type:
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@Returns:
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<!-- # Unused Parameters # -->
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@elementname:
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<!-- ##### FUNCTION gst_element_factory_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_element_factory_get_element_type ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_longname ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_klass ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_description ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_author ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_num_pad_templates ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_uri_type ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_get_uri_protocols ##### -->
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<para>
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</para>
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@factory:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_create ##### -->
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<para>
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</para>
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@factory:
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@name:
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@Returns:
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<!-- ##### FUNCTION gst_element_factory_make ##### -->
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<para>
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</para>
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@factoryname:
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@name:
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@Returns:
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