[gst-devel] pad factories

[Wim Taymans]

When a new elementfactory is created in plugin_init, we
want to expose a list of possible pads this element will
create/contain to the plugin system. The pads will be exposed
using a GstPadFactory structure. This structure will contain
the following information:

  - a pad name template
  - a GstCaps *
  - the direction of the pad
  - when the pad will be created (ALWAYS, SOMETIMES, ...)
  - ...

the structure will be like:

  typedef _GstPadFactory {
     gchar           *template;
     GstCaps         *caps;
     GstPadDirection *direction;
     GstPadPresence  *presence;
  };

example:

  GstCaps *srcaps;

  GstPadFactory videopadfactory = {
    "video_[1-5]",
    srccaps,
    GST_PAD_SRC,
    GST_PAD_SOMETIMES,
  };

  with 

    gst_elementfactory_add_pad (&videopadfactory);

  the pad description will be added to the elementfactory.
 


-- 
Ben, why didn't you tell me?
		-- Luke Skywalker