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.

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.

gst_plugin_feature_set_name()

#define                 gst_plugin_feature_set_name(feature,name) gst_object_set_name(GST_OBJECT_CAST(feature),name)

Sets the name of the plugin feature, getting rid of the old name if there was one.

gst_plugin_feature_get_rank ()

guint
gst_plugin_feature_get_rank (GstPluginFeature *feature);

Gets the rank of a plugin feature.

gst_plugin_feature_get_name()

#define                 gst_plugin_feature_get_name(feature)      GST_OBJECT_NAME(feature)

Returns the name of feature . For a nameless plugin feature, this returns NULL.

gst_plugin_feature_get_plugin ()

GstPlugin *
gst_plugin_feature_get_plugin (GstPluginFeature *feature);

Get the plugin that provides this feature.

gst_plugin_feature_get_plugin_name ()

const gchar *
gst_plugin_feature_get_plugin_name (GstPluginFeature *feature);

Get the name of the plugin that provides this feature.

Since: 1.2

gst_plugin_feature_load ()

GstPluginFeature *
gst_plugin_feature_load (GstPluginFeature *feature);

Loads the plugin containing feature if it's not already loaded. feature is unaffected; use the return value instead.

Normally this function is used like this:

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GstPluginFeature *loaded_feature;

loaded_feature = gst_plugin_feature_load (feature);
// presumably, we're no longer interested in the potentially-unloaded feature
gst_object_unref (feature);
feature = loaded_feature;

gst_plugin_feature_list_copy ()

GList *
gst_plugin_feature_list_copy (GList *list);

Copies the list of features. Caller should call gst_plugin_feature_list_free when done with the list.

gst_plugin_feature_list_free ()

void
gst_plugin_feature_list_free (GList *list);

Unrefs each member of list , then frees the list.

GST_PLUGIN_FEATURE_LIST_DEBUG()

#define GST_PLUGIN_FEATURE_LIST_DEBUG(list) gst_plugin_feature_list_debug(list)

Debug the plugin feature names in list .

gst_plugin_feature_check_version ()

gboolean
gst_plugin_feature_check_version (GstPluginFeature *feature,
                                  guint min_major,
                                  guint min_minor,
                                  guint min_micro);

Checks whether the given plugin feature is at least the required version

gst_plugin_feature_rank_compare_func ()

gint
gst_plugin_feature_rank_compare_func (gconstpointer p1,
                                      gconstpointer p2);

Compares the two given GstPluginFeature instances. This function can be used as a GCompareFunc when sorting by rank and then by name.

GstPluginFeature

typedef struct _GstPluginFeature GstPluginFeature;

Opaque GstPluginFeature structure.

enum GstRank

Element priority ranks. Defines the order in which the autoplugger (or similar rank-picking mechanisms, such as e.g. gst_element_make_from_uri()) will choose this element over an alternative one with the same function.

These constants serve as a rough guidance for defining the rank of a GstPluginFeature. Any value is valid, including values bigger than GST_RANK_PRIMARY .