From b2a9054e28a698b6e1f7f91f85e98a0c1d23a73f Mon Sep 17 00:00:00 2001 From: Sandesh Venkatesh Date: Tue, 11 Mar 2025 14:14:28 +0530 Subject: [PATCH] Fix for 3GPP issue 1048: Problem in stereo during bitrate switching and frame erasure Link #1048 --- lib_dec/er_dec_tcx_fx.c | 2 +- lib_dec/ivas_mdct_core_dec_fx.c | 9 ++------- 2 files changed, 3 insertions(+), 8 deletions(-) diff --git a/lib_dec/er_dec_tcx_fx.c b/lib_dec/er_dec_tcx_fx.c index 8c10e5f81..5cc06dabf 100644 --- a/lib_dec/er_dec_tcx_fx.c +++ b/lib_dec/er_dec_tcx_fx.c @@ -1168,7 +1168,7 @@ void con_tcx_ivas_fx( /* apply pre-emphasis to the signal */ mem = synth[( -( ( ( L_frame / 2 ) + hTcxDec->pit_max_TCX ) + M + M ) - 1 )]; /*Q0*/ move16(); - Q_exc = E_UTIL_f_preemph3_ivas_fx( &( synth[-add( add( shr( L_frame, 1 ), hTcxDec->pit_max_TCX ), 2 * M )] ), st->preemph_fac, add( add( shr( L_frame, 1 ), hTcxDec->pit_max_TCX ), shl( M, 1 ) ), &mem, 1 ); + Q_exc = E_UTIL_f_preemph3_ivas_fx( &( synth[-( ( ( L_frame / 2 ) + hTcxDec->pit_max_TCX ) + 2 * M )] ), st->preemph_fac, add( add( shr( L_frame, 1 ), hTcxDec->pit_max_TCX ), shl( M, 1 ) ), &mem, 1 ); st->Mode2_lp_gainc = L_deposit_l( 0 ); st->Mode2_lp_gainp = get_gain2( synth - shl( L_subfr, 1 ), synth - add( shl( L_subfr, 1 ), Tc ), shl( L_subfr, 1 ) ); diff --git a/lib_dec/ivas_mdct_core_dec_fx.c b/lib_dec/ivas_mdct_core_dec_fx.c index 7f079277a..a5855a0f6 100644 --- a/lib_dec/ivas_mdct_core_dec_fx.c +++ b/lib_dec/ivas_mdct_core_dec_fx.c @@ -1282,11 +1282,6 @@ void ivas_mdct_core_reconstruct_fx( ELSE /*ACELP core for ACELP-PLC */ { assert( EQ_16( st->bfi, 1 ) ); - - 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 ) { @@ -1316,11 +1311,11 @@ void ivas_mdct_core_reconstruct_fx( 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) + Scale_sig( synthFB_fx - add( add( shr( st->hTcxDec->L_frameTCX, 1 ), st->hTcxDec->pit_max_TCX ), 2 * M ), sub( add( add( shr( st->hTcxDec->L_frameTCX, 1 ), st->hTcxDec->pit_max_TCX ), 2 * M ), 1 ), sub( q_syn, sub( st->Q_exc, 1 ) ) ); // 2 * q_syn - (st->Q_exc - 1) } ELSE { - Scale_sig( synthFB_fx - st->hTcxDec->L_frameTCX, st->hTcxDec->L_frameTCX, sub( q_syn, sub( st->Q_exc, 1 ) ) ); // 2 * q_syn - (st->Q_exc - 1) + Scale_sig( synthFB_fx - st->hTcxDec->L_frameTCX, sub( st->hTcxDec->L_frameTCX, 1 ), sub( q_syn, sub( st->Q_exc, 1 ) ) ); // 2 * q_syn - (st->Q_exc - 1) } lerp( synthFB_fx, synth_fx, st->L_frame, st->hTcxDec->L_frameTCX ); -- GitLab