Commit 5feaf0b4 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
Browse files

Fix for 3GPP issue 1465: Decoder crash for low bitrate OSBA in ivas_spar_dec_upmixer_sf_fx() 

Link #1465
parent 27af412d

lib_com/cldfb.c

+32 −8
Original line number Diff line number Diff line
@@ -901,7 +901,7 @@ void cldfbAnalysis_ts_fx_fixed_q( 
    const Word16 *ptr_pf_fx;

    Word16 ptr_pf_sf;

    Word32 *timeBuffer_fx, buffer_fx[( CLDFB_NO_CHANNELS_MAX * CLDFB_NO_COL_MAX ) + ( 9 * CLDFB_NO_CHANNELS_MAX )];

    Word16 offset, frameSize;

    Word16 offset, frameSize, gb, hr, shift;



    offset = sub( h_cldfb->p_filter_length, h_cldfb->no_channels );

    frameSize = i_mult( h_cldfb->no_channels, h_cldfb->no_col );
@@ -1071,10 +1071,33 @@ void cldfbAnalysis_ts_fx_fixed_q( 
        *q_cldfb = sub( *q_cldfb, 2 );

        move16();



        gb = find_guarded_bits_fx( M1 );

        hr = L_norm_arr( iBuffer_fx, M1 );



        IF( LT_16( hr, gb ) )

        {

            scale_sig32( iBuffer_fx, M1, sub( hr, gb ) );

        }



        /* FFT of DCT IV */

        fft_cldfb_fx( iBuffer_fx, M2 );



        /* post modulation of DCT IV */

        IF( LT_16( hr, gb ) )

        {

            shift = sub( gb, hr );

            FOR( k = 0; k < M2; k++ )

            {

                /* do it inplace */

                /*cplxMult(&imagBuffer[2*k],&imagBuffer[M1-1-(2*k)],iBuffer[2*k],iBuffer[2*k+1],rot_vctr_re[k],rot_vctr_im[k]);*/

                imagBuffer_fx[2 * k] = L_shl( Msub_32_32( Mpy_32_32( iBuffer_fx[2 * k], rot_vctr_re_fx[k] ), iBuffer_fx[2 * k + 1], rot_vctr_im_fx[k] ), shift );                  // q - 5

                imagBuffer_fx[( M1 - 1 ) - ( k * 2 )] = L_shl( Madd_32_32( Mpy_32_32( iBuffer_fx[2 * k], rot_vctr_im_fx[k] ), iBuffer_fx[2 * k + 1], rot_vctr_re_fx[k] ), shift ); // q - 5

                move32();

                move32();

            }

        }

        ELSE

        {

            FOR( k = 0; k < M2; k++ )

            {

                /* do it inplace */
@@ -1084,6 +1107,7 @@ void cldfbAnalysis_ts_fx_fixed_q( 
                move32();

                move32();

            }

        }



        IF( EQ_32( h_cldfb->prototype, CLDFB_PROTOTYPE_5_00MS ) )

        {