Commit e9c74df8 authored by Sandesh Venkatesh's avatar Sandesh Venkatesh
Browse files

Merge branch 'ltv_crash_10db_dec_fix' into 'main' 

Fix for LTV encoder +10dB crash

See merge request !1445
parents 99e792d1 32903074

lib_enc/ivas_stereo_mdct_core_enc_fx.c

+16 −10
Original line number Diff line number Diff line
@@ -458,29 +458,35 @@ void stereo_mdct_core_enc_fx( 
            {

                IF( NE_16( hStereoMdct->mdct_stereo_mode[n], SMDCT_DUAL_MONO ) )

                {

                    exp = shl( add( sts[ch]->hTcxEnc->spectrum_e[n], 1 ), 1 ); // 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1)

                    /* power spectrum: MDCT^2 + MDST^2 */

                    W_tmp = W_mult_32_32( inv_spectrum_fx[ch][n][0], inv_spectrum_fx[ch][n][0] ); // exp: 2*sts[ch]->hTcxEnc->spectrum_e[n]

                    mdct = L_shr( inv_spectrum_fx[ch][n][0], 1 ); // exp: sts[ch]->hTcxEnc->spectrum_e[n]+1

                    W_tmp = W_mult_32_32( mdct, mdct );           // exp: 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1) (exp)

                    norm = W_norm( W_tmp );

                    powerSpecMsInv_fx[ch][n][0] = W_extract_h( W_shl( W_tmp, norm ) ); // exp: 2*sts[ch]->hTcxEnc->spectrum_e[n]-norm

                    exp_powSpecInv[n][0] = sub( shl( sts[ch]->hTcxEnc->spectrum_e[n], 1 ), norm );

                    powerSpecMsInv_fx[ch][n][0] = W_extract_h( W_shl( W_tmp, norm ) ); // exp: 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1)-norm (exp-norm)

                    exp_powSpecInv[n][0] = sub( exp, norm );

                    move32();

                    move16();



                    FOR( i = 1; i < L_subframeTCX - 1; i++ )

                    {

                        Word32 mdst_fx = L_sub( inv_spectrum_fx[ch][n][i + 1], inv_spectrum_fx[ch][n][i - 1] );                        // exp: sts[ch]->hTcxEnc->spectrum_e[n]

                        W_tmp = W_mac_32_32( W_mult_32_32( mdst_fx, mdst_fx ), inv_spectrum_fx[ch][n][i], inv_spectrum_fx[ch][n][i] ); // exp: 2*sts[ch]->hTcxEnc->spectrum_e[n]

                        /* float mdst = ( inv_spectrum[ch][n][i + 1] - inv_spectrum[ch][n][i - 1] );

                           powerSpecMsInv[ch][n][i] = mdst * mdst + inv_spectrum[ch][n][i] * inv_spectrum[ch][n][i]; */

                        mdst = L_sub( L_shr( inv_spectrum_fx[ch][n][i + 1], 1 ), L_shr( inv_spectrum_fx[ch][n][i - 1], 1 ) ); // exp: sts[ch]->hTcxEnc->spectrum_e[n]+1

                        mdct = L_shr( inv_spectrum_fx[ch][n][i], 1 );                                                         // exp: sts[ch]->hTcxEnc->spectrum_e[n]+1

                        W_tmp = W_mac_32_32( W_mult_32_32( mdst, mdst ), mdct, mdct );                                        // exp: 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1) (exp)

                        norm = W_norm( W_tmp );

                        powerSpecMsInv_fx[ch][n][i] = W_extract_h( W_shl( W_tmp, norm ) ); // exp: 2*sts[ch]->hTcxEnc->spectrum_e[n]-norm

                        exp_powSpecInv[n][i] = sub( shl( sts[ch]->hTcxEnc->spectrum_e[n], 1 ), norm );

                        powerSpecMsInv_fx[ch][n][i] = W_extract_h( W_shl( W_tmp, norm ) ); // exp: 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1)-norm (exp-norm)

                        exp_powSpecInv[n][i] = sub( exp, norm );

                        move32();

                        move16();

                    }



                    W_tmp = W_mult_32_32( inv_spectrum_fx[ch][n][L_subframeTCX - 1], inv_spectrum_fx[ch][n][L_subframeTCX - 1] ); // exp: 2*sts[ch]->hTcxEnc->spectrum_e[n]

                    mdct = L_shr( inv_spectrum_fx[ch][n][L_subframeTCX - 1], 1 ); // exp: sts[ch]->hTcxEnc->spectrum_e[n]+1

                    W_tmp = W_mult_32_32( mdct, mdct );                           // exp: 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1) (exp)

                    norm = W_norm( W_tmp );

                    powerSpecMsInv_fx[ch][n][L_subframeTCX - 1] = W_extract_h( W_shl( W_tmp, norm ) ); // exp: 2*sts[ch]->hTcxEnc->spectrum_e[n]-norm

                    exp_powSpecInv[n][L_subframeTCX - 1] = sub( shl( sts[ch]->hTcxEnc->spectrum_e[n], 1 ), norm );

                    powerSpecMsInv_fx[ch][n][L_subframeTCX - 1] = W_extract_h( W_shl( W_tmp, norm ) ); // exp: 2*(sts[ch]->hTcxEnc->spectrum_e[n]+1)-norm (exp-norm)

                    exp_powSpecInv[n][L_subframeTCX - 1] = sub( exp, norm );

                    move32();

                    move16();

                }