draw_rectangle    668 libavdevice/xcbgrab.c     draw_rectangle(s);
draw_rectangle    518 libavfilter/vsrc_testsrc.c     draw_rectangle(0, dst, dst_linesize, segment_width, 0, 0, 8, 13);
draw_rectangle    521 libavfilter/vsrc_testsrc.c             draw_rectangle(255, dst, dst_linesize, segment_width,