MODE_LINE          67 libavfilter/avf_showwaves.c         { "line",  "draw a line for each sample",          0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE},          .flags=FLAGS, .unit="mode"},
MODE_LINE         293 libavfilter/avf_showwaves.c     case MODE_LINE:          showwaves->draw_sample = draw_sample_line;  break;