draw_dc           166 libavfilter/vsrc_mptestsrc.c             draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);
draw_dc           231 libavfilter/vsrc_mptestsrc.c             draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);