Commit ac0218a1 authored by Nishant S Kulgod's avatar Nishant S Kulgod
Browse files

commit 2

parent 3aeac74f

lib_com/arith_coder_fx.c

+4 −0
Original line number Diff line number Diff line
@@ -274,7 +274,11 @@ void tcx_arith_scale_envelope( 


    tmp2 = BASOP_Util_Add_MantExp(negate(b), b_e, tmp, tmp2, &scale);

    scale = BASOP_Util_Divide1616_Scale(scale, round_fx(a), &tmp);

#ifdef BASOP_NOGLOB

    scale = shl_o(scale, sub(sub(add(tmp, tmp2), a_e), 1), &Overflow); /* Q15 */

#else

    scale = shl(scale, sub(sub(add(tmp, tmp2), a_e), 1)); /* Q15 */

#endif



    /* iscale = 1.0f / scale; */

    iscale_e = 0;

lib_com/gs_inact_switching_fx.c

+4 −4
Original line number Diff line number Diff line
@@ -258,8 +258,8 @@ void Inac_switch_ematch_ivas_fx( 
                FOR(j = 0; j < 8; j++)

                {

                    L_tmp = L_mult0(*pt_exc, ftmp);

                    L_tmp = L_shl(L_tmp, add(exp, 15));  /* Q(Q_exc) -> Q(15+Q_exc)*/

                    *pt_exc = round_fx(L_tmp);           /*Q_exc - 1*/

                    L_tmp = L_shl_sat(L_tmp, add(exp, 15));  /* Q(Q_exc) -> Q(15+Q_exc)*/

                    *pt_exc = round_fx_sat(L_tmp);           /*Q_exc - 1*/

                    pt_exc++;

                }

            }
@@ -268,8 +268,8 @@ void Inac_switch_ematch_ivas_fx( 
                FOR(j = 0; j < 16; j++)

                {

                    L_tmp = L_mult0(*pt_exc,ftmp);

                    L_tmp = L_shl(L_tmp, add(exp,15));  /* Q(Q_exc) -> Q(15+Q_exc)*/

                    *pt_exc = round_fx(L_tmp);          /*Q_exc - 1*/

                    L_tmp = L_shl_sat(L_tmp, add(exp,15));  /* Q(Q_exc) -> Q(15+Q_exc)*/

                    *pt_exc = round_fx_sat(L_tmp);          /*Q_exc - 1*/

                    pt_exc++;

                }

            }

lib_dec/fd_cng_dec_fx.c

+28 −9
Original line number Diff line number Diff line
@@ -1760,7 +1760,10 @@ Word16 ApplyFdCng_ivas_fx( 
                        }

                        s2 = s_max( s2, facTabExp[k] );

                    }



                    IF(EQ_16(s2, -31))

                    {

                      s2 = 0; move16();

                    }

                    FOR( k = 0; k < hFdCngCom->nFFTpart; k++ )

                    {

                        s = sub( facTabExp[k], s2 );
@@ -1833,7 +1836,10 @@ Word16 ApplyFdCng_ivas_fx( 
                        }

                        s2 = s_max( s2, facTabExp[k] );

                    }



                    IF(EQ_16(s2, -31))

                    {

                      s2 = 0; move16();

                    }

                    FOR( k = 0; k < hFdCngCom->nFFTpart; k++ )

                    {

                        s = sub( facTabExp[k], s2 );
@@ -2705,27 +2711,40 @@ void perform_noise_estimation_dec_ivas_fx( 
                Word16 scale;

                /* no updates during active frames except for significant energy drops */

                enr_ratio = BASOP_Util_Divide3232_Scale( enr_tot, enr_tot0, &scale );

                IF( GE_16( scale, 0 ) )

                IF( LE_16( scale, 0 ) )

                {

                    enr_ratio = shr( enr_ratio, scale );

                    enr_ratio = shl( enr_ratio, scale );

                    scale = 15; move16();

                }

                ELSE

                {

                    enr_ratio = shr( enr_ratio, sub( 15, scale ) );

                    scale = sub(15, scale);

                }

                IF( LT_16( enr_ratio, ONE_IN_Q14 ) )

                IF( LT_16( enr_ratio, shl(1, sub(scale, 1)) ) )

                {

                    /* total energy significantly decreases during active frames -> downward update */

                    wght = lin_interp_fx( enr_ratio, 0, 26214 /*0.8f in Q15*/, 16384 /*0.5f in Q15*/, 31130 /*0.95f in Q15*/, 32767 /*1 in Q15*/ );



                    wght = lin_interp_fx( enr_ratio, 0, shr(26214, sub(15, scale)) /*0.8f in Q15*/, shr(16384, sub(15, scale)) /*0.5f in Q15*/, shr(31130, sub(15, scale)) /*0.95f in Q15*/, shr(32767, sub(15, scale)) /*1 in Q15*/ );

                    Word16 temp_q_msNoiseEst[NPART_SHAPING];

                    Word16 min_q_msNoiseEst = MAX_16;

                    FOR(p = 0; p < NPART_SHAPING; p++)

                    {

                      temp_q_msNoiseEst[p] = hFdCngDec->msNoiseEst_exp; move16();

                    }

                    FOR( p = 0; p < npart; p++ )

                    {

                        L_tmp = L_shr( msPeriodog[p], sub( sub( 31, hFdCngDec->hFdCngCom->periodog_exp ), 4 ) );

                        IF( LT_32( L_tmp, msNoiseEst[p] ) )

                        {

                            msNoiseEst[p] = L_add( Mpy_32_16_1( msNoiseEst[p], wght ), Mpy_32_16_1( L_tmp, (Word16) L_sub( ONE_IN_Q15, wght ) ) );

                            msNoiseEst[p] = L_add( Mpy_32_16_1( msNoiseEst[p], wght ), Mpy_32_16_1( L_tmp, (Word16) L_sub( shr(MAX_16, sub(15, scale)), wght ) ) );

                            temp_q_msNoiseEst[p] = sub(add(hFdCngDec->msNoiseEst_exp, scale), 15);

                        }

                        min_q_msNoiseEst = s_min(temp_q_msNoiseEst[p], min_q_msNoiseEst);

                    }

                    FOR(p = 0; p < NPART_SHAPING; p++)

                    {

                      msNoiseEst[p] = L_shl(msNoiseEst[p], sub(min_q_msNoiseEst, temp_q_msNoiseEst[p]));

                    }

                    hFdCngDec->msNoiseEst_exp = min_q_msNoiseEst; move16();

                }

                ELSE

                {