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gst/gstutils.h (GST_BOILERPLATE_WITH_INTERFACE): New ghetto macro, implements an interface and gstimplementsinterface...

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Original commit message from CVS:
2005-08-22  Andy Wingo  <wingo@pobox.com>

* gst/gstutils.h (GST_BOILERPLATE_WITH_INTERFACE): New ghetto
macro, implements an interface and gstimplementsinterface for a
new type.
This commit is contained in:
Andy Wingo 2005-08-22 15:12:56 +00:00
parent 7b4a9e4c58
commit e6d23e0aee
1 changed files with 41 additions and 0 deletions
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41
gst/gstutils.h
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@ -88,6 +88,47 @@ type_as_function ## _get_type (void) \
GST_BOILERPLATE_FULL (type, type_as_function, parent_type, parent_type_macro, \
__GST_DO_NOTHING)
/* Like GST_BOILERPLATE, but makes the type 1) implement an interface, and 2)
* implement GstImplementsInterface for that type
*
* After this you will need to implement interface_as_function ## _supported
* and interface_as_function ## _interface_init
*/
#define GST_BOILERPLATE_WITH_INTERFACE(type, type_as_function, parent_type, \
parent_type_as_macro, interface_type, interface_type_as_macro, \
interface_as_function) \
\
static void interface_as_function ## _interface_init (interface_type ## Class *klass); \
static gboolean interface_as_function ## _supported (type *object, GType iface_type); \
\
static void \
type_as_function ## _implements_interface_init (GstImplementsInterfaceClass *klass) \
{ \
klass->supported = (gpointer)interface_as_function ## _supported; \
} \
\
static void \
type_as_function ## _init_interfaces (GType type) \
{ \
static const GInterfaceInfo implements_iface_info = { \
(GInterfaceInitFunc) type_as_function ## _implements_interface_init, \
NULL, \
NULL, \
}; \
static const GInterfaceInfo iface_info = { \
(GInterfaceInitFunc) interface_as_function ## _interface_init, \
NULL, \
NULL, \
}; \
\
g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE, \
&implements_iface_info); \
g_type_add_interface_static (type, interface_type_as_macro, &iface_info); \
} \
\
GST_BOILERPLATE_FULL (type, type_as_function, parent_type, \
parent_type_as_macro, type_as_function ## _init_interfaces)
/* Just call the parent handler. This assumes that there is a variable
* named parent_class that points to the (duh!) parent class. Note that
* this macro is not to be used with things that return something, use