Commit dd7e30dc authored by malenov's avatar malenov
Browse files

prevent R[0] from being zero

parent 8704a7b9

lib_com/options.h

+1 −0
Original line number Diff line number Diff line
@@ -174,6 +174,7 @@ 
#define NONBE_FIX_1070_USAN_SEGFAULT_MC_TO_BIN_BTSW_HEADROT   /* fix 1070 USAN: nullptr-with-offset and Segfaults in 7_1_4 to BINAURAL and BINAURAL_ROOM_REVERB decoding with bitrate switching and head rotation*/

#define REVERT_ZERO_FLUSH_TRESH                               /* FhG: issue 1069: revert threshold value introduced with !1518 due to significant complexity increase*/ 

#define NONBE_FIX_1097_SBA_DTX_BRATE_SWITCHING_ENC            /* FhG: fix out-of-bound errors when switching from SID frame to active frame*/

#define NONBE_FIX_1130_DIV_ZERO_LEV_DUR                       /* VA: issue 1130: avoid div by zero in L-D by thresholding R[0] to a min value of 100.0 */



/* ##################### End NON-BE switches ########################### */

lib_enc/swb_tbe_enc.c

+10 −1
Original line number Diff line number Diff line
@@ -280,6 +280,15 @@ void wb_tbe_enc( 
    }



    autocorr( hb_old_speech, R, LPC_SHB_ORDER_WB + 1, ( NS2SA( INT_FS_12k8, 5000000L ) + L_SUBFR + L_FRAME ) * 5 / 16, win_lpc_hb_wb, 0, 1, 1 );



#ifdef NONBE_FIX_1130_DIV_ZERO_LEV_DUR

    if ( st->element_mode > EVS_MONO )

    {

        /* Ensure R[0] isn't zero when entering Levinson-Durbin */ 

        R[0] = max( R[0], 1.0e-8f );

    }

#endif



    lev_dur( lpc_wb_temp, R, LPC_SHB_ORDER_WB, ervec_temp );

    a2lsp( lsp_wb_temp, lpc_wb_temp, LPC_SHB_ORDER_WB );

    lsp_spacing = 0.5f;