nchan_out_buff=max(nchan_out_buff+st_ivas->nchan_ism,audioCfg2channels(output_config));/* needed for iivas_spar_dec_upmixer_sf() which is based on 'nchan_out' */
nchan_out_buff=max(nchan_out_buff+st_ivas->nchan_ism,audioCfg2channels(output_config));/* needed for ivas_spar_dec_upmixer_sf() which is based on 'nchan_out' */