Sets our main struct and passes it to the parent class.
Set @key with @value as metadata in @klass.
Set @key with @value as metadata in @klass.
Get the main Gtk struct
Get metadata with @key in @klass.
the main Gtk struct as a void*
Sets the detailed information for a #GstDeviceProviderClass. <note>This function is for use in _class_init functions only.</note>
Sets the detailed information for a #GstDeviceProviderClass. <note>This function is for use in _class_init functions only.</note>
the main Gtk struct
The structure of the base #GstDeviceProviderClass