blend_slice_yuva444_pm  887 libavfilter/vf_overlay.c         s->blend_slice = s->main_has_alpha ? blend_slice_yuva444_pm : blend_slice_yuv444_pm;
blend_slice_yuva444_pm  904 libavfilter/vf_overlay.c             s->blend_slice = blend_slice_yuva444_pm;