VOLUME_MAX        250 libavfilter/avf_showcqt.c         double vol = clip_with_log(s->ctx, "sono_v", av_expr_eval(sono, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
VOLUME_MAX        252 libavfilter/avf_showcqt.c         vol = clip_with_log(s->ctx, "bar_v", av_expr_eval(bar, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
VOLUME_MAX        255 libavfilter/avf_showcqt.c         vol = clip_with_log(s->ctx, "sono_v", av_expr_eval(sono, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);