Commit e2ec095f authored by vaillancour's avatar vaillancour
Browse files

propsed fix to 846

parent 2fb72211

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -161,6 +161,7 @@ 
#define NONE_BE_FIX_816_LFE_PLC_FLOAT                   /* DLB: issue 816: reduce required precision to float for LFE-PLC*/

#define FIX_844_Q_SYN_INIT                          /* VA : proposed fix to 844, initializing q_old_synth when switching to MDCT*/

#define FIX_839_FB_CONTENT_SOMETIME_MISSING     /* VA : Fix scaling error for FB TB BWE */

#define FIX_846_TILT_BWE                        /* VA : Proposed fix to 846, to solve saturation */

/* ################## End DEVELOPMENT switches ######################### */



/* clang-format on */

lib_com/swb_bwe_com_fx.c

+16 −1
Original line number Diff line number Diff line
@@ -765,7 +765,7 @@ Word16 ivas_calc_tilt_bwe_fx( /* o : Tilt in Q24 */ 
    ptr = sp;



    L_ener_tot = L_deposit_l( 1 );



#ifndef FIX_846_TILT_BWE

    /* Divide Frame Length by 32 */

    FOR( j = shr( N, 5 ); j > 0; j-- )

    {
@@ -781,6 +781,21 @@ Word16 ivas_calc_tilt_bwe_fx( /* o : Tilt in Q24 */ 


        L_ener_tot = L_add( L_ener_tot, L_ener );

    }

#else

    /* Divide Frame Length by 32 */

    Word64 W_ener; 

    W_ener = Mpy_32_32( *ptr, *ptr );

    *ptr++;

    FOR( j = 1; j < N; j++ )

    {

        /* With the shift by 4 and the L_mult0, no overflow possible for 32 samples */

        W_ener = W_mac_32_32( W_ener, *ptr, *ptr );

        *ptr++;

    }

    L_ener_tot = W_round64_L( W_ener );

    L_ener_tot = L_max( L_ener_tot, 1 ); /* L_ener_tot is energy, it is always positive, but have to be > 0 for the following division */



#endif

    L_ener = L_abs( L_sub( sp[1], sp[0] ) );



    FOR( i = 2; i < N; i++ )