a GstPadTemplate of which we want a pad of.
the name of the request GstPad to retrieve. Can be NULL. [transfer none][allow-none]
the caps of the pad we want to request. Can be NULL. [transfer none][allow-none]
requested GstPad if found, otherwise NULL. Release after usage. [transfer full]
Retrieves a request pad from the element according to the provided template. Pad templates can be looked up using gst_element_factory_get_static_pad_templates(). The pad should be released with gst_element_release_request_pad().