LINEAR             31 libavfilter/avf_ahistogram.c enum DisplayScale   { LINEAR, SQRT, CBRT, LOG, RLOG, NB_SCALES };
LINEAR             49 libavfilter/avf_showspectrum.c enum DisplayScale { LINEAR, SQRT, CBRT, LOG, FOURTHRT, FIFTHRT, NB_SCALES };
LINEAR             37 libavfilter/avf_showvolume.c enum DisplayScale   { LINEAR, LOG, NB_DISPLAY_SCALE };
LINEAR             40 libavfilter/vaf_spectrumsynth.c enum MagnitudeScale { LINEAR, LOG, NB_SCALES };
LINEAR             52 libavfilter/vf_lensfun.c     LINEAR,
LINEAR             36 libavfilter/vf_perspective.c #define LINEAR 0