blend_slice_yuva422_pm  884 libavfilter/vf_overlay.c         s->blend_slice = s->main_has_alpha ? blend_slice_yuva422_pm : blend_slice_yuv422_pm;
blend_slice_yuva422_pm  901 libavfilter/vf_overlay.c             s->blend_slice = blend_slice_yuva422_pm;