Commit 0bab7023 authored by Manuel Jander's avatar Manuel Jander
Browse files

Increase headroom for ACELP ZIR in TCX/ACELP transition.

parent 0f73e249

lib_dec/dec_tcx_fx.c

+11 −0
Original line number Diff line number Diff line
@@ -3450,7 +3450,18 @@ void IMDCT_ivas_fx( 
                acelp_mem_len = 0;

                move16();

            }



#ifdef FIX_1348_BIT_PRECISION_IMPROVEMENT_QWIN

            IF( EQ_16( st->element_mode, IVAS_CPE_MDCT ) && ( LE_32( st->last_core_brate, SID_2k40 ) || st->last_core == ACELP_CORE ) && ( fullbandScale == 0 ) )

            {

                /* Increase headroom because if the ACELP ZIR is used below, the synthesis filter gain is unknown. */

                IF ( allow_qwin_change ) {

                    allow_qwin_change = 0;

                    move16();

                    q_win = s_max( -2, sub( q_win, 2 ) );

                }

            }



            IF( EQ_16( kernel_type, MDST_IV ) )

            {

                TCX_MDST_Inverse_qwin_fx( x_fx, x_e_hdrm, xn_buf_fx, overlap, L_frame - overlap, overlap, &q_win, allow_qwin_change );