Commit ca636735 authored by Archit Tamarapu's avatar Archit Tamarapu
Browse files

port NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS

parent 4bec0fbb

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -137,6 +137,7 @@ 
#define FIX_1001_ARI_HM_OVERFLOW                        /* FhG: (no changes needed in BASOP) fix for undef behaviour in in the harmonic TCX model arithmetic coder */

#define NONBE_FIX_1005_MC_RS_TCBUFFER_UPDATE                  /* FhG: issue #1005: fix TC Buffer update at a MC rate switch */

#define NONBE_FIX_1004_USAN_DTX_MASA_NO_DIRS            /* Nokia: fix USAN error caused by non-setting of correctly the number of MASA directions in DTX */

#define NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS            /* FhG: fix for #1091, fix limit calculation for the regularized inverse of Kx to avoid bursts in very low signals */



/* #################### End BASOP porting switches ############################ */

lib_dec/ivas_dirac_output_synthesis_cov_fx.c

+19 −0
Original line number Diff line number Diff line
@@ -51,6 +51,13 @@ 
#include "rom_dec.h"

#include "ivas_prot_fx.h"



#ifdef NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS

/*-----------------------------------------------------------------------*

 * Local constants

 *-----------------------------------------------------------------------*/



#define SQRT_EPSILON_FX 68 /* Q31 square root of EPSILON */

#endif



/*-------------------------------------------------------------------*

 * ivas_dirac_dec_output_synthesis_cov_open()
@@ -930,9 +937,21 @@ Word16 computeMixingMatrices_fx( 
        }

    }



#ifdef NONBE_FIX_1091_PMC_LOW_SIGNAL_BURSTS

    limit_fx = Mpy_32_32( limit_fx, reg_Sx_fx );

    limit_e = add( limit_e, reg_Sx_e );

    IF( BASOP_Util_Cmp_Mant32Exp( limit_fx, limit_e, SQRT_EPSILON_FX /* Q31 */, 0 ) < 0 )

    {

        limit_fx = SQRT_EPSILON_FX;

        move32();

        limit_e = 0;

        move16();

    }

#else

    L_tmp = Mpy_32_32( limit_fx, reg_Sx_fx );

    limit_e = add( limit_e, reg_Sx_e );

    limit_fx = L_add( L_tmp, EPSILON_FX );

#endif



    FOR( i = 0; i < lengthCx; ++i )

    {