Commit 76e569b0 authored by thomas dettbarn's avatar thomas dettbarn
Browse files

improved the second half of IGF_getWhiteSpectralData_ivas().

parent 56daf71c

lib_dec/igf_dec_fx.c

+4 −15
Original line number Diff line number Diff line
@@ -2906,7 +2906,6 @@ static void IGF_getWhiteSpectralData_ivas( 
    Word16 out_e_arr[IGF_START_MX + MAX_IGF_SFB_LEN];

    Word16 max_out_e;

    Word64 window_sum;

    Word64 left_one;

    assert( LT_16( stop, IGF_START_MX + MAX_IGF_SFB_LEN ) );



    /* inits */
@@ -2933,8 +2932,6 @@ static void IGF_getWhiteSpectralData_ivas( 
    ak_e = sub( ak_e, 1 );



    window_sum = 0;

    left_one = 0;

    move64();

    move64();

    FOR( j = start - level; j < start + level; j++ )

    {
@@ -2943,10 +2940,9 @@ static void IGF_getWhiteSpectralData_ivas( 


    FOR( i = start; i < stop - level; i++ )

    {

        window_sum = W_sub( window_sum, left_one ); /* subtract the left one */

        window_sum = W_mac_32_32( window_sum, in[i + level], in[i + level] ); /* add the right one */

        left_one = W_mult_32_32( in[i - level], in[i - level] );

        ak = Mult_32_16( W_shl_sat_l( window_sum, shift ), quo ); // add( shl( level, 1 ), 1 ), &tmp_e ) );

        window_sum = W_sub( window_sum, W_mult_32_32( in[i - level], in[i - level] ) ); /* subtract the left one */





        n = sub( ak_e, norm_l( ak ) );
@@ -2959,15 +2955,8 @@ static void IGF_getWhiteSpectralData_ivas( 


    FOR( ; i < stop; i++ )

    {

        Word64 temp = 0;

        move64();



        FOR( j = i - level; j < stop; j++ )

        {

            temp = W_mac_32_32( temp, in[j], in[j] );

        }



        ak = L_deposit_h( BASOP_Util_Divide3216_Scale( W_shl_sat_l( temp, shift ), sub( stop, sub( i, level ) ), &tmp_e ) );

        ak = L_deposit_h( BASOP_Util_Divide3216_Scale( W_shl_sat_l( window_sum, shift ), sub( stop, sub( i, level ) ), &tmp_e ) );

        window_sum = W_sub( window_sum, W_mult_32_32( in[i - level], in[i - level] ) ); /* subtract the left one */

        ak_e = add( tmp_e, eff_e ); // tmp_e + 2 * (in_e - s_l) - 15

        n = sub( ak_e, add( norm_l( ak ), 1 ) );

        n = shr( n, 1 );