Commit 9aa8bea3 authored by vaclav's avatar vaclav
Browse files

introduce Unified/MDCT stereo switching for 3ISM @96 kbps and 4ISM @128 kbps;... 

introduce  Unified/MDCT stereo switching for 3ISM @96 kbps and 4ISM @128 kbps; under FIX_OMASA_STEREO_SWITCHING
parent bd4d275e

lib_com/cnst.h

+3 −0
Original line number Diff line number Diff line
@@ -263,6 +263,9 @@ enum{ 
enum

{

    IND_IVAS_FORMAT,

#ifdef FIX_OMASA_STEREO_SWITCHING

    IND_SMODE_OMASA,

#endif

    IND_SMODE,

    IND_SID_TYPE,

    IND_BWIDTH,

lib_com/ivas_cnst.h

+8 −1
Original line number Diff line number Diff line
@@ -1214,10 +1214,17 @@ enum 
#define MASA_STEREO_MIN_BITRATE                 IVAS_24k4

#ifdef MASA_AND_OBJECTS

#define MAXIMUM_OMASA_FREQ_BANDS                8                           /* Corresponds to maximum number of coding bands at 32 kbps */



#ifdef FIX_OMASA_STEREO_SWITCHING

#define OMASA_STEREO_SW_CNT_MAX                 100

#define OMASA_STEREO_SW_CNT_MAX2                5

#endif



#endif



#define MASA_BIT_REDUCT_PARAM                   10

#define MASA_MAXIMUM_TWO_DIR_BANDS              18



typedef enum

{

    MASA_STEREO_NOT_DEFINED,

lib_com/ivas_prot.h

+3 −0
Original line number Diff line number Diff line
@@ -837,6 +837,9 @@ ivas_error ivas_ism_metadata_enc( 
    const int16_t ism_extended_metadata_flag                    /* i  : Extended metadata flag                      */

#ifdef MASA_AND_OBJECTS

   ,const float lp_noise_CPE                                    /* i  : LP filterend total noise estimation         */

#ifdef FIX_OMASA_STEREO_SWITCHING

   ,int16_t *omasa_stereo_sw_cnt

#endif

#endif

);

lib_com/options.h

+2 −1
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ 


#ifdef DEBUGGING



/*#define DEBUG_MODE_INFO*/                     /* output most important parameters to the subdirectory "res/" */

#define DEBUG_MODE_INFO                     /* output most important parameters to the subdirectory "res/" */

#ifdef DEBUG_MODE_INFO

/*#define DEBUG_MODE_ACELP*/                    /* output most important ACELP core parameters to the subdirectory "res/" */

/*#define DEBUG_MODE_TCX*/                      /* output most important TCX core parameters to the subdirectory "res/" */
@@ -168,6 +168,7 @@ 
#define MASA_AND_OBJECTS                                /* Nokia: Combination of MASA and objects */

#ifdef MASA_AND_OBJECTS

#define MASAISM_EDIT_OBJECTS                            /* Nokia: Temporary command line editing of object directions in the decoder */

#define FIX_OMASA_STEREO_SWITCHING  // VA: introduce  Unified/MDCT stereo switching for 3ISM @96 kbps and 4ISM @128 kbps 

#endif

lib_dec/ivas_cpe_dec.c

+40 −0
Original line number Diff line number Diff line
@@ -79,6 +79,9 @@ ivas_error ivas_cpe_dec( 
    ivas_error error;

#ifdef MASA_AND_OBJECTS

    int32_t cpe_brate;

#ifdef FIX_OMASA_STEREO_SWITCHING

    int32_t element_brate_ref;

#endif

#endif

    error = IVAS_ERR_OK;
@@ -95,10 +98,40 @@ ivas_error ivas_cpe_dec( 
    sts[0]->BER_detect |= st_ivas->BER_detect;

    sts[1]->BER_detect |= st_ivas->BER_detect;



#ifdef FIX_OMASA_STEREO_SWITCHING

    element_brate_ref = hCPE->element_brate;

#endif



    /*------------------------------------------------------------------*

     * Read stereo technology info & audio bandwidth

     *-----------------------------------------------------------------*/



#ifdef FIX_OMASA_STEREO_SWITCHING

    if ( st_ivas->ivas_format == MASA_ISM_FORMAT )

    {

        if ( st_ivas->ism_mode == ISM_MASA_MODE_DISC &&

             ( ( st_ivas->nchan_ism == 3 && ivas_total_brate == IVAS_96k ) ||

               ( st_ivas->nchan_ism == 4 && ivas_total_brate == IVAS_128k ) ) )

        {

            /* read OMASA stereo mode signalling */

            if ( get_next_indice( sts[0], NBITS_ELEMENT_MODE ) )

            {

                hCPE->element_mode = IVAS_CPE_MDCT;

            }

            else

            {

                hCPE->element_mode = IVAS_CPE_DFT;

            }



            if ( hCPE->element_mode == IVAS_CPE_MDCT )

            {

                hCPE->element_brate = IVAS_64k;

                hCPE->brate_surplus -= ( hCPE->element_brate - element_brate_ref );

            }

        }

    }

#endif



    read_stereo_mode_and_bwidth( hCPE, st_ivas );



    /*----------------------------------------------------------------*
@@ -551,6 +584,13 @@ ivas_error ivas_cpe_dec( 
    hCPE->last_element_brate = hCPE->element_brate;

    hCPE->last_element_mode = hCPE->element_mode;



#ifdef FIX_OMASA_STEREO_SWITCHING

    if ( st_ivas->ivas_format == MASA_ISM_FORMAT )

    {

        hCPE->element_brate = element_brate_ref;

    }

#endif



    if ( hCPE->element_mode == IVAS_CPE_DFT || hCPE->element_mode == IVAS_CPE_TD )

    {

        stereo_cng_dec_update( hCPE, ivas_total_brate );