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to element classes without using an elementfactory.

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Original commit message from CVS:
Aplied the patch from Andy Wingo <apwingo@eos.ncsu.edu> add padtemplates
to element classes without using an elementfactory.
The gst_element_add_padtemplate_to_class method was renamed to
gst_element_class_add_padtemplate to better match glib/gtk conventions.
This commit is contained in:
Andy Wingo 2001-07-11 12:33:17 +00:00 committed by Wim Taymans
parent 6152feb109
commit eaaaabf3aa
3 changed files with 43 additions and 9 deletions
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39
gst/gstelement.c
View file

@ -148,6 +148,8 @@ gst_element_class_init (GstElementClass *klass)
klass->change_state = GST_DEBUG_FUNCPTR(gst_element_change_state);
klass->elementfactory = NULL;
klass->padtemplates = NULL;
klass->numpadtemplates = 0;
}
static void
@ -412,9 +414,14 @@ gst_element_remove_ghost_pad (GstElement *element, GstPad *pad)
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_ELEMENT (element));
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (GST_IS_GHOST_PAD (pad));
// FIXME this is redundant?
// wingo 10-july-2001: I don't think so, you have to actually remove the pad
// from the element. gst_pad_remove_ghost_pad just removes the ghostpad from
// the real pad's ghost pad list
gst_pad_remove_ghost_pad (GST_PAD (GST_PAD_REALIZE (pad)), pad);
gst_element_remove_pad (element, pad);
}
@ -473,6 +480,27 @@ gst_element_get_pad_list (GstElement *element)
return element->pads;
}
/**
* gst_element_class_add_padtemplate:
* @klass: element class to add padtemplate to
* @templ: padtemplate to add
*
* Add a padtemplate to an element class. This is useful if you have derived a custom
* bin and wish to provide an on-request pad at runtime. Plugin writers should use
* gst_elementfactory_add_padtemplate instead.
*/
void
gst_element_class_add_padtemplate (GstElementClass *klass, GstPadTemplate *templ)
{
g_return_if_fail (klass != NULL);
g_return_if_fail (GST_IS_ELEMENT_CLASS (klass));
g_return_if_fail (templ != NULL);
g_return_if_fail (GST_IS_PADTEMPLATE (templ));
klass->padtemplates = g_list_append (klass->padtemplates, templ);
klass->numpadtemplates++;
}
/**
* gst_element_get_padtemplate_list:
* @element: element to get padtemplates of
@ -491,10 +519,7 @@ gst_element_get_padtemplate_list (GstElement *element)
oclass = GST_ELEMENT_CLASS (G_OBJECT_GET_CLASS(element));
if (oclass->elementfactory == NULL) return NULL;
/* return the list of pads */
return oclass->elementfactory->padtemplates;
return oclass->padtemplates;
}
/**
@ -900,7 +925,7 @@ gst_element_shutdown (GObject *object)
gst_bin_remove (GST_BIN (GST_OBJECT_PARENT (element)), element);
if (G_OBJECT_CLASS (parent_class)->shutdown)
G_OBJECT_CLASS (parent_class)->shutdown ((GObject *)object);
G_OBJECT_CLASS (parent_class)->shutdown (G_OBJECT (object));
}
static void
@ -1130,7 +1155,7 @@ gst_element_restore_thyself (xmlNodePtr self, GstObject *parent)
}
child = child->next;
}
gst_util_set_object_arg (G_OBJECT (element), name, value);
gst_util_set_object_arg ((GObject *)G_OBJECT (element), name, value);
}
children = children->next;
}

5
gst/gstelement.h
View file

@ -153,6 +153,9 @@ struct _GstElementClass {
/* the elementfactory that created us */
GstElementFactory *elementfactory;
/* templates for our pads */
GList *padtemplates;
gint numpadtemplates;
/* signal callbacks */
void (*state_change) (GstElement *element,GstElementState state);
@ -192,6 +195,8 @@ struct _GstElementFactory {
guint16 numpadtemplates;
};
void gst_element_class_add_padtemplate (GstElementClass *element, GstPadTemplate *templ);
GType gst_element_get_type (void);
GstElement* gst_element_new (void);
#define gst_element_destroy(element) gst_object_destroy (GST_OBJECT (element))

4
gst/gstelementfactory.c
View file

@ -169,6 +169,10 @@ gst_elementfactory_create (GstElementFactory *factory,
oclass->elementfactory = factory;
}
// copy pad template pointers to the element class
oclass->padtemplates = g_list_copy(factory->padtemplates);
oclass->numpadtemplates = factory->numpadtemplates;
gst_object_set_name (GST_OBJECT (element),name);
return element;