GstPluginFeature

GstPluginFeature — Base class for contents of a GstPlugin

Synopsis


#include <gst/gst.h>


struct      GstPluginFeature;
#define     GST_PLUGIN_FEATURE_NAME         (feature)
struct      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);
G_CONST_RETURN 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

struct GstPluginFeature

struct 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

struct GstTypeNameData

struct GstTypeNameData {

  const gchar 	*name;
  GType		 type;
};

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 ()

G_CONST_RETURN gchar* gst_plugin_feature_get_name
                                            (GstPluginFeature *feature);

Gets the name of a plugin feature.

`feature` :	a feature
Returns :	the name