GstPluginFeature Base class for contents of a GstPlugin This is a base class for anything that can be added to a #GstPlugin. #GstPlugin Get the name of the feature @feature: The feature to query @name: @type: A function that can be used with e.g. gst_registry_feature_filter() to get a list of pluginfeature that match certain criteria. @feature: the pluginfeature to check @user_data: the user_data that has been passed on e.g. gst_registry_feature_filter() @Returns: TRUE for a positive match, FALSE otherwise @feature: @Returns: @feature: @feature: @data: @Returns: @feature: @rank: @feature: @name: @feature: @Returns: @feature: @Returns: