GstPluginFeature

GstPluginFeature — Base class for contents of a GstPlugin

Synopsis


#include <gst/gst.h>


                    GstPluginFeature;
#define             GST_PLUGIN_FEATURE_NAME             (feature)
                    GstTypeNameData;
gboolean            (*GstPluginFeatureFilter)           (GstPluginFeature *feature,
                                                         gpointer user_data);
gboolean            gst_plugin_feature_ensure_loaded    (GstPluginFeature *feature);
void                gst_plugin_feature_unload_thyself   (GstPluginFeature *feature);
gboolean            gst_plugin_feature_type_name_filter (GstPluginFeature *feature,
                                                         GstTypeNameData *data);
void                gst_plugin_feature_set_rank         (GstPluginFeature *feature,
                                                         guint rank);
void                gst_plugin_feature_set_name         (GstPluginFeature *feature,
                                                         const gchar *name);
guint               gst_plugin_feature_get_rank         (GstPluginFeature *feature);
const gchar*        gst_plugin_feature_get_name         (GstPluginFeature *feature);


Object Hierarchy


  GObject
   +----GstPluginFeature
         +----GstElementFactory
         +----GstSchedulerFactory
         +----GstTypeFindFactory
         +----GstIndexFactory

Description

This is a base class for anything that can be added to a GstPlugin.

Details

GstPluginFeature

typedef struct _GstPluginFeature GstPluginFeature;


GST_PLUGIN_FEATURE_NAME()

#define GST_PLUGIN_FEATURE_NAME(feature)  (GST_PLUGIN_FEATURE (feature)->name)

Get the name of the feature

feature : The feature to query

GstTypeNameData

typedef struct {
  const gchar 	*name;
  GType		 type;
} GstTypeNameData;


GstPluginFeatureFilter ()

gboolean            (*GstPluginFeatureFilter)           (GstPluginFeature *feature,
                                                         gpointer user_data);

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

gst_plugin_feature_ensure_loaded ()

gboolean            gst_plugin_feature_ensure_loaded    (GstPluginFeature *feature);

Check if the plugin containing the feature is loaded, if not, the plugin will be loaded.

feature : the plugin feature to check
Returns : a boolean indicating the feature is loaded.

gst_plugin_feature_unload_thyself ()

void                gst_plugin_feature_unload_thyself   (GstPluginFeature *feature);

Unload the given feature. This will decrease the refcount in the plugin and will eventually unload the plugin

feature : the plugin feature to check

gst_plugin_feature_type_name_filter ()

gboolean            gst_plugin_feature_type_name_filter (GstPluginFeature *feature,
                                                         GstTypeNameData *data);

feature :
data :
Returns :

gst_plugin_feature_set_rank ()

void                gst_plugin_feature_set_rank         (GstPluginFeature *feature,
                                                         guint rank);

Specifies a rank for a plugin feature, so that autoplugging uses the most appropriate feature.

feature : feature to rank
rank : rank value - higher number means more priority rank

gst_plugin_feature_set_name ()

void                gst_plugin_feature_set_name         (GstPluginFeature *feature,
                                                         const gchar *name);

Sets the name of a plugin feature. The name uniquely identifies a feature within all features of the same type. Renaming a plugin feature is not allowed.

feature : a feature
name : the name to set

gst_plugin_feature_get_rank ()

guint               gst_plugin_feature_get_rank         (GstPluginFeature *feature);

feature :
Returns :

gst_plugin_feature_get_name ()

const gchar*        gst_plugin_feature_get_name         (GstPluginFeature *feature);

Gets the name of a plugin feature.

feature : a feature
Returns : the name

See Also

GstPlugin