static void celt_search_for_dual_stereo(OpusPsyContext *s, CeltFrame *f) { float td1, td2; f->dual_stereo = 0; bands_dist(s, f, &td1); f->dual_stereo = 1; bands_dist(s, f, &td2); f->dual_stereo = td2 < td1; s->dual_stereo_used += td2 < td1; }