Commit c41f67fd authored by premathasara's avatar premathasara
Browse files

Make way for 3 extra bits in the AGC by removing an unnecessary bit from the... 

Make way for 3 extra bits in the AGC by removing an unnecessary bit from the AGC and slightly reducing the dirac max metadata rate for 24.4kbps
parent 0d52c934

lib_com/ivas_dirac_com.c

+4 −0
Original line number Diff line number Diff line
@@ -372,7 +372,11 @@ ivas_error ivas_dirac_sba_config( 
        else if ( sba_total_brate <= IVAS_24k4 )

        {

            hQMetaData->bits_frame_nominal = ACELP_16k40 / FRAMES_PER_SEC;

#ifdef FIX_185_REDUCE_MD_BITS

            hQMetaData->metadata_max_bits = 103;

#else

            hQMetaData->metadata_max_bits = 106;

#endif

        }

        else if ( sba_total_brate <= IVAS_32k )

        {

lib_com/options.h

+1 −1
Original line number Diff line number Diff line
@@ -163,7 +163,7 @@ 
#define FIX_158_DIRAC_MEM                               /* Issue 158: Reduce memory consumption in the hDirac_mem handle */

#define BRATE_SWITCHING_FRAMEWORK                       /* Bitrate switching changes related to the general framework  */

#define BRATE_SWITCHING_RENDERING                       /* Bitrate switching changes related to the renderers */



#define FIX_185_REDUCE_MD_BITS                          /* Issue 185: Crash in SBA encoder for 24.4 kbps HOA3 input with longer testvector */



/* ################## End DEVELOPMENT switches ######################### */

/* clang-format on */

lib_dec/ivas_agc_dec.c

+4 −0
Original line number Diff line number Diff line
@@ -308,7 +308,11 @@ void ivas_agc_read_bits( 
            if ( per_ch_bit[i] == 1 )

            {

                pState->gain_data[i].absGainExpCurr = get_next_indice( st0, (int16_t) pState->agc_com.betaE );

#ifdef FIX_185_REDUCE_MD_BITS

                pState->gain_data[i].gainException = false;

#else

                pState->gain_data[i].gainException = get_next_indice( st0, 1 );

#endif

            }

            else

            {

lib_enc/ivas_agc_enc.c

+2 −0
Original line number Diff line number Diff line
@@ -512,7 +512,9 @@ void ivas_agc_enc_process( 
            if ( per_ch_bit[i] == 1 )

            {

                push_next_indice( hMetaData, (uint16_t) pState->gain_data[i].absGainExpCurr, (int16_t) pState->agc_com.betaE );

#ifndef FIX_185_REDUCE_MD_BITS

                push_next_indice( hMetaData, (uint16_t) pState->gain_data[i].gainException, 1 );

#endif

                assert( pState->gain_data[i].gainException == FALSE );

            }

        }