ff_h264_get_slice_type  232 libavcodec/dxva2_h264.c     slice->slice_type            = ff_h264_get_slice_type(sl);
ff_h264_get_slice_type  567 libavcodec/h264dec.h int ff_h264_get_slice_type(const H264SliceContext *sl);
ff_h264_get_slice_type  344 libavcodec/vaapi_h264.c         .slice_type                    = ff_h264_get_slice_type(sl),