Commit 221a6da1 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
Browse files

Fix for 3GPP issue 1028: OSBA 192 kbps: Concealment introduces clicks 

link #1028
parent 692628c7

lib_dec/er_dec_tcx_fx.c

+2 −2
Original line number Diff line number Diff line
@@ -2151,7 +2151,7 @@ void con_tcx_ivas_fx( 
    move16();



    /* update memory for low band */

    st->Q_syn = 0;

    st->Q_syn = Q_syn;

    move16();

    Scale_sig( hTcxDec->old_syn_Overl, shr( st->L_frame, 1 ), sub( -1, Q_syn ) ); /*Q_syn*/

    lerp( hTcxDec->syn_OverlFB, hTcxDec->syn_Overl, shr( st->L_frame, 1 ), shr( L_frame, 1 ) );
@@ -2159,7 +2159,7 @@ void con_tcx_ivas_fx( 
    hTcxDec->Q_syn_Overl_TDAC = hTcxDec->Q_syn_Overl_TDACFB;

    move16();

    lerp( st->hHQ_core->old_out_fx, st->hHQ_core->old_out_LB_fx, st->L_frame, L_frame );



    st->hHQ_core->Q_old_wtda_LB = Q_syn;

    st->old_enr_LP = Enr_1_Az_fx( A_local, L_SUBFR ); /*Q3*/

    move16();

lib_dec/ivas_mdct_core_dec.c

+16 −6
Original line number Diff line number Diff line
@@ -2162,9 +2162,9 @@ void ivas_mdct_core_reconstruct_fx( 
        {

            assert( EQ_16( st->bfi, 1 ) );



            Scale_sig( synth_buf_fx, add( add( st->hTcxDec->old_synth_len, L_FRAME_PLUS ), M ), negate( q_syn ) );     // Q0

            Scale_sig( synth_bufFB_fx, add( add( st->hTcxDec->old_synth_lenFB, L_FRAME_PLUS ), M ), negate( q_syn ) ); // Q0

            q_syn = 0;

            Scale_sig( synth_buf_fx, add( add( st->hTcxDec->old_synth_len, L_FRAME_PLUS ), M ), sub( -2, q_syn ) );     // Q0

            Scale_sig( synth_bufFB_fx, add( add( st->hTcxDec->old_synth_lenFB, L_FRAME_PLUS ), M ), sub( -2, q_syn ) ); // Q0

            q_syn = -2;

            move16();

            /* PLC: [TCX: TD PLC] */

            IF( MCT_flag != 0 )
@@ -2182,8 +2182,17 @@ void ivas_mdct_core_reconstruct_fx( 
                    con_tcx_ivas_fx( st, &synthFB_fx[0], hCPE->hStereoMdct->lastCoh_fx, &sts[0]->seed_acelp, 0, &st->hFdCngDec->hFdCngCom->A_cng[0] );

                }

            }

            st->hHQ_core->Q_old_wtda = add( st->hHQ_core->Q_old_wtda, q_syn );

            move16();

            st->hHQ_core->Q_old_wtda_LB = add( st->hHQ_core->Q_old_wtda_LB, q_syn );

            move16();

            st->hTcxDec->Q_syn_Overl_TDAC = add( st->hTcxDec->Q_syn_Overl_TDAC, q_syn );

            move16();

            st->hTcxDec->Q_syn_Overl_TDACFB = add( st->hTcxDec->Q_syn_Overl_TDACFB, q_syn );

            move16();

            st->Q_syn = q_syn;

            move16();



            Scale_sig( synthFB_fx, st->hTcxDec->L_frameTCX, q_syn ); // q_syn

            IF( ( EQ_16( st->nbLostCmpt, 1 ) ) || ( st->hTcxDec->tcxConceal_recalc_exc != 0 ) )

            {

                Scale_sig( synthFB_fx - add( add( shr( st->hTcxDec->L_frameTCX, 1 ), st->hTcxDec->pit_max_TCX ), 2 * M ), add( add( shr( st->hTcxDec->L_frameTCX, 1 ), st->hTcxDec->pit_max_TCX ), 2 * M ), sub( q_syn, sub( st->Q_exc, 1 ) ) ); // 2 * q_syn - (st->Q_exc - 1)
@@ -2220,11 +2229,11 @@ void ivas_mdct_core_reconstruct_fx( 
            /* Update FEC_scale_syn parameters */

            IF( st->hTcxLtpDec->tcxltp_gain == 0 )

            {

                frame_ener_fx( st->L_frame, UNVOICED, synth_fx, shr( st->L_frame, 1 ), &st->enr_old_fx, st->L_frame, 0, 0, 0 );

                frame_ener_fx( st->L_frame, UNVOICED, synth_fx, shr( st->L_frame, 1 ), &st->enr_old_fx, st->L_frame, q_syn, 0, 0 );

            }

            ELSE

            {

                frame_ener_fx( st->L_frame, st->clas_dec, synth_fx, extract_l( L_shr( st->old_fpitch, 16 ) ), &st->enr_old_fx, st->L_frame, 0, 0, 0 );

                frame_ener_fx( st->L_frame, st->clas_dec, synth_fx, extract_l( L_shr( st->old_fpitch, 16 ) ), &st->enr_old_fx, st->L_frame, q_syn, 0, 0 );

            }

        }
@@ -2237,6 +2246,7 @@ void ivas_mdct_core_reconstruct_fx( 
        move16();

        move16();

        Scale_sig( st->hTcxDec->old_synthFB_fx, st->hTcxDec->old_synth_lenFB, sub( st->Q_syn, q_syn ) ); // st->Q_syn



        IF( st->hHQ_core != NULL )

        {

            Copy( st->hHQ_core->old_out_fx + NS2SA( st->output_Fs, N_ZERO_MDCT_NS ), st->hTcxDec->old_synthFB_fx + st->hTcxDec->old_synth_lenFB, NS2SA( st->output_Fs, PH_ECU_LOOKAHEAD_NS ) );