Commit 48ece3d0 authored by Anjaneyulu Sana's avatar Anjaneyulu Sana
Browse files

Fix for 3GPP issue 1258: Decoder: Click artifact for Stereo to Mono Decoding

parent b4a8a48f

lib_dec/ivas_core_dec.c

+10 −0
Original line number Diff line number Diff line
@@ -782,6 +782,7 @@ ivas_error ivas_core_dec_fx( 
        /* for inactive frames with mono output, copy and (if necessary) downmix buffers */

        ELSE IF( EQ_16( hCPE->nchan_out, 1 ) )

        {

            Word16 shift1, shift2;

            sts[0] = hCPE->hCoreCoder[0];

            sts[1] = hCPE->hCoreCoder[1];
@@ -800,6 +801,15 @@ ivas_error ivas_core_dec_fx( 
                move16();

                sts[1]->hHQ_core->Q_old_wtda = sub( 15, sts[1]->hHQ_core->exp_old_out );

                move16();



                shift1 = norm_arr( sts[0]->hHQ_core->old_out_fx, L_FRAME48k );

                shift2 = norm_arr( sts[1]->hHQ_core->old_out_fx, L_FRAME48k );

                scale_sig( sts[0]->hHQ_core->old_out_fx, L_FRAME48k, shift1 );

                scale_sig( sts[1]->hHQ_core->old_out_fx, L_FRAME48k, shift2 );

                sts[0]->hHQ_core->Q_old_wtda = add( sts[0]->hHQ_core->Q_old_wtda, shift1 );

                sts[1]->hHQ_core->Q_old_wtda = add( sts[1]->hHQ_core->Q_old_wtda, shift2 );

                move16();

                move16();

            }

        }