Commit ba5945af authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
Browse files

LTV mct opt enc 5 - 08072025

parent a00cb1a4

lib_com/ivas_sns_com_fx.c

+26 −0
Original line number Diff line number Diff line
@@ -376,12 +376,14 @@ void sns_shape_spectrum_fx( 
            {

                L64_tmp[k] = W_mult_32_32( spectrum[k], scf_int[i] ); // Q = q_spectrum + q_scf_int + 1

                move64();

#ifndef OPT_MCT_ENC_V3_NBE

                shift = W_norm( L64_tmp[k] );

                if ( LT_16( shift, min_shift ) )

                {

                    min_shift = shift;

                    move16();

                }

#endif

            }

        }

        tmp_k = k;
@@ -391,18 +393,29 @@ void sns_shape_spectrum_fx( 
            *length = k;

            move16();

        }

#ifdef OPT_MCT_ENC_V3_NBE

        min_shift = W_norm_arr( L64_tmp, *length );

        shift = sub( min_shift, 32 );

#endif

        q_tmp = sub( add( add( *q_spectrum, q_scf_int ), min_shift ), 32 );

#ifndef OPT_MCT_ENC_V3_NBE

        if ( GT_16( q_tmp, 30 ) )

        {

            q_tmp = 30;

            move16();

        }

#endif

        FOR( k = 0; k < tmp_k; k++ )

        {

#ifdef OPT_MCT_ENC_V3_NBE

            spectrum[k] = W_shl_sat_l( L64_tmp[k], shift ); // q_tmp+1

            move32();

#else

            L64_tmp[k] = W_shr( L64_tmp[k], sub( add( *q_spectrum, q_scf_int ), q_tmp ) ); //  Q = q_tmp+1

            move64();

            spectrum[k] = W_sat_l( L64_tmp[k] ); //  Q = q_tmp+1

            move64();

#endif

        }

        *q_spectrum = q_tmp;

        move16();
@@ -418,6 +431,7 @@ void sns_shape_spectrum_fx( 
            {

                L64_tmp[k] = W_mult_32_32( spectrum[k], scf_int[i] ); // Q = q_spectrum + q_scf_int + 1

                move64();

#ifndef OPT_MCT_ENC_V3_NBE

                shift = W_norm( L64_tmp[k] );

                test();

                if ( LT_16( shift, min_shift ) && NE_64( L64_tmp[k], 0 ) )
@@ -425,6 +439,7 @@ void sns_shape_spectrum_fx( 
                    min_shift = shift;

                    move16();

                }

#endif

            }

        }

        tmp_k = k;
@@ -434,18 +449,29 @@ void sns_shape_spectrum_fx( 
            *length = k;

            move16();

        }

#ifdef OPT_MCT_ENC_V3_NBE

        min_shift = W_norm_arr( L64_tmp, *length );

        shift = sub( min_shift, 32 );

#endif

        q_tmp = sub( add( add( *q_spectrum, q_scf_int ), min_shift ), 32 );

#ifndef OPT_MCT_ENC_V3_NBE

        if ( GT_16( q_tmp, 30 ) )

        {

            q_tmp = 30;

            move16();

        }

#endif

        FOR( k = 0; k < tmp_k; k++ )

        {

#ifdef OPT_MCT_ENC_V3_NBE

            spectrum[k] = W_shl_sat_l( L64_tmp[k], shift ); // q_tmp+1

            move32();

#else

            L64_tmp[k] = W_shr( L64_tmp[k], sub( add( *q_spectrum, q_scf_int ), q_tmp ) ); // q_tmp+1

            move64();

            spectrum[k] = W_sat_l( L64_tmp[k] ); // Q = q_tmp+1

            move64();

#endif

        }

        *q_spectrum = q_tmp;

        move16();

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ 




/* Note: each compile switch (FIX_1101_...) is independent from the other ones */

#define OPT_MCT_ENC_V3_NBE

#define OPT_MCH_DEC_V1_NBE

#define OPT_MCT_ENC_48KB_NBE

#define OPT_MCH_DEC_V1_BE

lib_enc/tcx_utils_enc_fx.c

+22 −1
Original line number Diff line number Diff line
@@ -1053,6 +1053,10 @@ Word16 SQ_gain_estimate_fx( /* output: SQ gain 
    Word32 tmp = 0, tmpp = 0;

    move32();

    move32();

#ifdef OPT_MCT_ENC_V3_NBE

    Word64 ener64_fx;

    Word16 tmp_exp;

#endif



    /* tmp =  0.5f * (float) log10( (float) lg / (float) NORM_MDCT_FACTOR ) + + 0.94f; lowest gain + expected value of the quantization noise energy per quadruple (log10(4/12)) in Q16*/

    /* tmpp =  0.5f * (float) log10( (float) lg / (float) NORM_MDCT_FACTOR ) * log2(10) in Q16 */
@@ -1166,9 +1170,21 @@ Word16 SQ_gain_estimate_fx( /* output: SQ gain 


    lg_4 = shr( lg, 2 );



#ifdef OPT_MCT_ENC_V3_NBE

    tmp_exp = shl( x_e, 1 );

#endif

    /* SNR of quadruples for unit step quantizer and lowest possible gain */

    FOR( i = 0; i < lg_4; i++ )

    {

#ifdef OPT_MCT_ENC_V3_NBE

        ener64_fx = W_mac_32_32( 1, x[0], x[0] );        // exp:2*x_e

        ener64_fx = W_mac_32_32( ener64_fx, x[1], x[1] ); // exp:2*x_e

        ener64_fx = W_mac_32_32( ener64_fx, x[2], x[2] ); // exp:2*x_e

        ener64_fx = W_mac_32_32( ener64_fx, x[3], x[3] ); // exp:2*x_e

        s = W_norm( ener64_fx );

        ener = W_extract_h( W_shl( ener64_fx, s ) );

        s = sub( tmp_exp, s );

#else

        /* normalization */

        s = 15;

        move16();
@@ -1215,7 +1231,7 @@ Word16 SQ_gain_estimate_fx( /* output: SQ gain 
        ener = L_mac( ener, tmp16, tmp16 );



        s = shl( sub( x_e, s ), 1 );



#endif

        /* log */

        tmp32 = L_add_sat( BASOP_Util_Log2( ener ), L_shl_sat( L_deposit_l( s ), 25 ) ); /* log2, 6Q25 */

        en[i] = L_add_sat( L_shr( tmp32, 9 ), tmp );                                     /* 15Q16 */
@@ -1241,8 +1257,13 @@ Word16 SQ_gain_estimate_fx( /* output: SQ gain 
        {

            tmp32 = L_sub( en[i], offset );



#ifdef OPT_MCT_ENC_V3_NBE

            /* avoid SV with 1 bin of amp < 0.5f */

            if ( GT_32( tmp32, 0xFF20 ) ) /* 0xFF20 -> 0.3*log2(10); */

#else

            /* avoid SV with 1 bin of amp < 0.5f */

            IF( GT_32( tmp32, 0xFF20 ) ) /* 0xFF20 -> 0.3*log2(10); */

#endif

            {

                ener = L_add( ener, tmp32 );

            }