SWR_ENGINE_SWR     95 libswresample/options.c {"swr"                  , "select SW Resampler"         , 0                      , AV_OPT_TYPE_CONST, {.i64=SWR_ENGINE_SWR        }, INT_MIN, INT_MAX   , PARAM, "resampler"},
SWR_ENGINE_SWR    200 libswresample/swresample.c         case SWR_ENGINE_SWR : s->resampler = &swri_resampler; break;
SWR_ENGINE_SWR    492 libswresample/swresample.c     int padless = ARCH_X86 && s->engine == SWR_ENGINE_SWR ? 7 : 0;