INTERPOLATION_LINEAR   68 libavfilter/af_flanger.c     { "linear",     NULL, 0, AV_OPT_TYPE_CONST,  {.i64=INTERPOLATION_LINEAR},    0, 0, A, "itype" },
INTERPOLATION_LINEAR  181 libavfilter/af_flanger.c             if (s->interpolation == INTERPOLATION_LINEAR) {