DisplayMode        34 libavfilter/avf_ahistogram.c enum DisplayMode    { SINGLE, SEPARATE, NB_DMODES };
DisplayMode        39 libavfilter/avf_showfreqs.c enum DisplayMode    { LINE, BAR, DOT, NB_MODES };
DisplayMode        46 libavfilter/avf_showspectrum.c enum DisplayMode  { COMBINED, SEPARATE, NB_MODES };