ff_lpc_calc_ref_coefs   94 libavcodec/cngenc.c     ff_lpc_calc_ref_coefs(&p->lpc, p->samples32, p->order, p->ref_coef);
ff_lpc_calc_ref_coefs  100 libavcodec/lpc.h int ff_lpc_calc_ref_coefs(LPCContext *s,