.bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD,
.second_field = FIELD_PICTURE(h) && !h->first_field,
.ref_pic_flag = h->nal_ref_idc != 0,
.bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD,
.second_field = FIELD_PICTURE(h) && !h->first_field,
.ref_pic_flag = h->nal_ref_idc != 0,