Commit d4ad9d9d authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
Browse files

Fix for 3GPP issue 895: Bitrate switching quality issue, low level square wave 

link #895
parent 61c7cfea

lib_com/fft_fx.c

+11 −0
Original line number Diff line number Diff line
@@ -7299,3 +7299,14 @@ Flag is_zero_arr( Word32 *arr, Word16 size ) 


    return 1;

}



Flag is_zero_arr16( Word16 *arr, Word16 size )

{

    FOR( Word16 i = 0; i < size; i++ )

    IF( arr[i] != 0 )

    {

        return 0;

    }



    return 1;

}
 
 No newline at end of file

lib_com/prot_fx.h

+1 −0
Original line number Diff line number Diff line
@@ -4557,6 +4557,7 @@ Word16 L_norm_arr( Word32 *arr, Word16 size ); 
Word16 get_min_scalefactor( Word32 x, Word32 y );















Flag is_zero_arr( Word32 *arr, Word16 size );













Flag is_zero_arr16( Word16 *arr, Word16 size );





























void edct2_fx_ivas(















    const Word16 n,

































lib_dec/ivas_mdct_core_dec.c



+6
−1




























Original line number
Diff line number
Diff line








@@ -1168,7 +1168,12 @@ void ivas_mdct_core_reconstruct_fx(













        }















        synth_fx = synth_buf_fx + st->hTcxDec->old_synth_len;















        synthFB_fx = synth_bufFB_fx + st->hTcxDec->old_synth_lenFB;



























        test();













        if ( is_zero_arr16( st->hTcxDec->old_synth, st->hTcxDec->old_synth_len ) && is_zero_arr16( st->hTcxDec->old_synthFB_fx, st->hTcxDec->old_synth_lenFB ) )













        {













            st->hTcxDec->q_old_synth = 0;













            move16();













        }















        Copy( st->hTcxDec->old_synth, synth_buf_fx, st->hTcxDec->old_synth_len );                                                                // Q = st->hTcxDec->q_old_synth















        Copy_Scale_sig( st->hTcxDec->old_synthFB_fx, synth_bufFB_fx, st->hTcxDec->old_synth_lenFB, sub( st->hTcxDec->q_old_synth, st->Q_syn ) ); // Q = st->hTcxDec->q_old_synth















        q_syn = st->hTcxDec->q_old_synth;