Gets the capabilities of the allowed media types that can flow through
pad and its peer.
The allowed capabilities is calculated as the intersection of the results of
calling gst_pad_get_caps() on pad and its peer. The caller owns a reference
on the resulting caps.
Gets the capabilities of the allowed media types that can flow through pad and its peer. The allowed capabilities is calculated as the intersection of the results of calling gst_pad_get_caps() on pad and its peer. The caller owns a reference on the resulting caps.