gst_caps_is_equal_fixed
gst_caps_is_always_compatible
gst_caps_is_subset
+gst_caps_is_subset_structure
gst_caps_can_intersect
gst_caps_intersect
gst_caps_intersect_full
gst_structure_has_field
gst_structure_has_field_typed
gst_structure_is_equal
+gst_structure_is_subset
gst_structure_can_intersect
gst_structure_intersect
gst_structure_id_has_field