static void do_rematrixing(AC3DecodeContext *s) { int bnd, i; int end, bndend; int tmp0, tmp1; end = FFMIN(s->end_freq[1], s->end_freq[2]); for(bnd=0; bnd<s->num_rematrixing_bands; bnd++) { if(s->rematrixing_flags[bnd]) { bndend = FFMIN(end, ff_ac3_rematrix_band_tab[bnd+1]); for(i=ff_ac3_rematrix_band_tab[bnd]; i<bndend; i++) { tmp0 = s->fixed_coeffs[1][i]; tmp1 = s->fixed_coeffs[2][i]; s->fixed_coeffs[1][i] = tmp0 + tmp1; s->fixed_coeffs[2][i] = tmp0 - tmp1; } } } }