Commit 567a49bd authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
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Fix for 3GPP issue 973: Yet another waveform discrepency in decoding received... 

Fix for 3GPP issue 973: Yet another waveform discrepency in decoding received SBA packets with 15% FER - 2

link #973
parent a67b2387

lib_dec/FEC_HQ_phase_ecu_fx.c

+19 −18
Original line number Diff line number Diff line
@@ -1456,6 +1456,7 @@ static void ivas_spec_ana_fx( 
    Word16 window_corr, window_corr_step;

    Word16 currPlocs, endPlocs, nJacob, k, i;

    Word32 sig, noise, st_point, end_point;

    Word32 xfp_32[3]; // Q + 16



    move16();    // LprotLog2Minus1

    move16();    // hamm_len2
@@ -1692,9 +1693,9 @@ static void ivas_spec_ana_fx( 
        test();

        IF( n > 0 && *pPlocs == 0 ) /* Very 1st peak position possible to have a peak at 0/DC index position. */

        {

            fraction = imax_fx( &xfp[*pPlocs], -1 ); /* in Q15 */

            acc = L_deposit_h( *pPlocs );

            *pPlocsi++ = L_mac( acc, fraction, 1 );

            Copy_Scale_sig_16_32( &xfp[*pPlocs], xfp_32, 3, Q16 );                  // Q + 16

            acc = L_deposit_h( *pPlocs );                                           // Q16

            *pPlocsi++ = L_add( acc, L_shl( imax_pos_fx( xfp_32 ) /* Q15 */, 1 ) ); // Q16

            move32();

            pPlocs++;

            n = sub( n, 1 );
@@ -1703,11 +1704,11 @@ static void ivas_spec_ana_fx( 
        test();

        IF( n > 0 && EQ_16( *pPlocs, 1 ) ) /* Also 2nd peak position uses DC which makes jacobsen unsuitable. */

        {

            fraction = imax_fx( &xfp[*pPlocs - 1], -1 ); /* in Q15 */

            acc = L_deposit_h( *pPlocs - 1 );

            *pPlocsi++ = L_mac( acc, fraction, 1 );

            Copy_Scale_sig_16_32( &xfp[*pPlocs - 1], xfp_32, 3, Q16 );              // Q + 16

            acc = L_deposit_h( sub( *pPlocs, 1 ) );                                 // Q16

            *pPlocsi++ = L_add( acc, L_shl( imax_pos_fx( xfp_32 ) /* Q15 */, 1 ) ); // Q16

            move32();

            currPlocs = *pPlocs++;

            currPlocs = *pPlocs++; // Q16

            move16();

            n = sub( n, 1 );

        }
@@ -1730,10 +1731,10 @@ static void ivas_spec_ana_fx( 
            FOR( k = 0; k < nJacob; k++ )

            {

                fraction = ivas_imax2_jacobsen_mag_fx( &( X_sav[currPlocs - 1] ), &( X_sav[Lprot - 1 - currPlocs] ) ); /* in Q15 */

                acc = L_deposit_h( currPlocs );

                *pPlocsi++ = L_mac( acc, fraction, 1 );

                acc = L_deposit_h( currPlocs );                                                                        // Q16

                *pPlocsi++ = L_mac( acc, fraction, 1 );                                                                // Q16

                move32();

                currPlocs = *pPlocs++;

                currPlocs = *pPlocs++; // Q16

                move16();

            }

            n = sub( n, nJacob );
@@ -1749,11 +1750,11 @@ static void ivas_spec_ana_fx( 


            IF( EQ_16( currPlocs, ( sub( Lprot2_1, DELTA_CORR_F0_INT ) ) ) ) /* Also 2nd last peak position uses fs/2  which makes jacobsen less suitable. */

            {

                fraction = imax_fx( &xfp[currPlocs - 1], 0 ); /* in Q15 */

                acc = L_deposit_h( sub( currPlocs, 1 ) );

                *pPlocsi++ = L_mac( acc, fraction, 1 );

                Copy_Scale_sig_16_32( &xfp[currPlocs - 1], xfp_32, 3, Q16 );            // Q + 16

                acc = L_deposit_h( sub( currPlocs, 1 ) );                               // Q16

                *pPlocsi++ = L_add( acc, L_shl( imax_pos_fx( xfp_32 ) /* Q15 */, 1 ) ); // Q16

                move32();

                currPlocs = *pPlocs++;

                currPlocs = *pPlocs++; // Q16

                move16();

                n = sub( n, 1 );

            }
@@ -1763,11 +1764,11 @@ static void ivas_spec_ana_fx( 
             * whould point */

            IF( n > 0 ) /* fs/2 which makes special case . */

            {

                fraction = imax_fx( &xfp[currPlocs - 2], 0 ); /* in Q15 */

                acc = L_deposit_h( sub( currPlocs, 2 ) );

                *pPlocsi++ = L_mac( acc, fraction, 1 );

                Copy_Scale_sig_16_32( &xfp[currPlocs - 2], xfp_32, 3, Q16 );            // Q + 16

                acc = L_deposit_h( sub( currPlocs, 2 ) );                               // Q16

                *pPlocsi++ = L_add( acc, L_shl( imax_pos_fx( xfp_32 ) /* Q15 */, 1 ) ); // Q16

                move32();

                currPlocs = *pPlocs++;

                currPlocs = *pPlocs++; // Q16

                move16();

                n = sub( n, 1 );

            }