Commit 44c55881 authored by Archit Tamarapu's avatar Archit Tamarapu
Browse files

[fix] SBA to stereo rendering loudness

parent 7e3f3315

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -151,6 +151,7 @@ 
#define FIX_BASOP_2517_CLICK_IN_OMASA_LTV               /* FhG: BASOP #2517: preserve precision by removing one-bit headroom from Q_min and allowing saturation during buffer scaling */

#define FIX_BASOP_2559_Q_SYNTH_HISTORY_RESET            /* FhG: BASOP issue 2559: reset hTcxDec->q_synth_history_fx in allocate_CoreCoder_TCX_fx() */

#define FIX_FLOAT_1578_OMASA_REND_SPIKES                /* Nokia: Float issue 1578: Fix spikes and collapsed perception in OMASA/MASA rendering to FOA/HOA */

#define FIX_1521_SBA_LOUDNESS_STEREO                    /* FhG: issue 1521: Fix loudness for SBA to stereo rendering */



/* ##################### End NON-BE switches ########################### */

lib_dec/ivas_sba_dirac_stereo_dec_fx.c

+20 −0
Original line number Diff line number Diff line
@@ -1566,11 +1566,31 @@ void ivas_sba_dirac_stereo_dec_fx( 
    synchro_synthesis_fx( st_ivas->hDecoderConfig->ivas_total_brate, hCPE, output, output_frame, 1 /*st_ivas->sba_dirac_stereo_flag*/, q_dft[0] );



    /* output scaling */

#ifdef FIX_1521_SBA_LOUDNESS_STEREO

    IF( !sba_mono_flag )

#else

    test();

    IF( !sba_mono_flag && !( EQ_16( st_ivas->ivas_format, SBA_ISM_FORMAT ) && EQ_16( st_ivas->ism_mode, ISM_MODE_NONE ) ) )

#endif

    {

#ifdef FIX_1521_SBA_LOUDNESS_STEREO

        test();

        IF( EQ_16( st_ivas->ivas_format, SBA_ISM_FORMAT ) && EQ_16( st_ivas->ism_mode, ISM_MODE_NONE ) )

        {

            /* low bitrate OSBA needs a makeup gain of 2.f to compensate for the encoder side

                INV_SQRT2 * 2 = SQRT2  */

            v_multc_fx( output[0], SQRT2_FX, output[0], output_frame );

            v_multc_fx( output[1], SQRT2_FX, output[1], output_frame );

        }

        ELSE

        {

            v_multc_fx( output[0], INV_SQRT2_FX, output[0], output_frame );

            v_multc_fx( output[1], INV_SQRT2_FX, output[1], output_frame );

        }

#else

        v_shr( output[0], 1, output[0], output_frame ); /*0.5f*/

        v_shr( output[1], 1, output[1], output_frame ); /*0.5f*/

#endif

    }



    /* delay HB synth */

lib_rend/ivas_allrad_dec_fx.c

+7 −0
Original line number Diff line number Diff line
@@ -98,10 +98,17 @@ ivas_error ivas_sba_get_hoa_dec_matrix_fx( 
    }

    ELSE IF( EQ_32( hOutSetup.output_config, IVAS_AUDIO_CONFIG_STEREO ) )

    {

#ifdef FIX_1521_SBA_LOUDNESS_STEREO

        ( *hoa_dec_mtx )[0] = INV_SQRT2_FX >> 2;

        ( *hoa_dec_mtx )[1] = INV_SQRT2_FX >> 2;

        ( *hoa_dec_mtx )[SBA_NHARM_HOA3] = INV_SQRT2_FX >> 2;

        ( *hoa_dec_mtx )[SBA_NHARM_HOA3 + 1] = -( INV_SQRT2_FX >> 2 );

#else

        ( *hoa_dec_mtx )[0] = ONE_IN_Q28;                   // 0.5f in Q29

        ( *hoa_dec_mtx )[1] = ONE_IN_Q28;                   // 0.5f in Q29

        ( *hoa_dec_mtx )[SBA_NHARM_HOA3] = ONE_IN_Q28;      // 0.5f in Q29

        ( *hoa_dec_mtx )[SBA_NHARM_HOA3 + 1] = -ONE_IN_Q28; // 0.5f in Q29

#endif

        move32();

        move32();

        move32();