Commit 7eac6af3 authored by Jan Kiene's avatar Jan Kiene
Browse files

add code for FhG contribution 33 - SNS quantization at mid bitrates

parent ad1223e5

lib_com/ivas_cnst.h

+8 −0
Original line number Diff line number Diff line
@@ -842,6 +842,14 @@ enum fea_names 


#define SNS_LOW_BR_MODE                         -1

#define SNS_NPTS                                16 /* Number of downsampled SNS parameters */

#ifdef SNS_MSVQ

#define SNS_STEREO_MODE_LR                      0

#define SNS_STEREO_MODE_MS                      1

#define SNS_STEREO_MODE_OFFSET_INDICES          4

#define SNS_MSVQ_NSTAGES_TCX20                  4

#define SNS_MSVQ_NSTAGES_TCX10                  3

#define SNS_MSVQ_NSTAGES_SIDE                   2

#endif



#define MDCT_ST_PLC_FADEOUT_MIN_NOISE_NRG       0.001f

#define MDCT_ST_PLC_FADEOUT_MAX_CONC_FRAME      2 * FRAMES_PER_SEC

lib_com/ivas_prot.h

+21 −0
Original line number Diff line number Diff line
@@ -2436,6 +2436,23 @@ void sns_shape_spectrum( 
    const int16_t L_frame                                       /* i  : frame length                                                */

);



#ifdef SNS_MSVQ

int16_t quantize_sns(

    float sns_in[CPE_CHANNELS][NB_DIV][M],

    float snsQ_out[CPE_CHANNELS][NB_DIV][M],

    Encoder_State **sts,

    int16_t *indices,

    int16_t *zero_side_flag,

    int16_t *sns_stereo_mode

);



void dequantize_sns(

    int16_t indices[CPE_CHANNELS][NPRM_LPC_NEW],

    float snsQ_out[CPE_CHANNELS][NB_DIV][M],

    Decoder_State **sts

);

#endif



void sns_avq_cod(

    const float *sns,                                           /* i  : Input sns vectors                       */

    const float *snsmid,                                        /* i  : Input mid-sns vectors                   */
@@ -2457,7 +2474,11 @@ void sns_avq_cod_stereo( 


void sns_avq_dec(

    int16_t *index,                                             /* i  : Quantization indices                    */

#ifdef SNS_MSVQ

    float SNS_Q[NB_DIV][M],                                     /* o  : Quantized SNS vectors                   */

#else

    float *SNS_Q,                                               /* o  : Quantized SNS vectors                   */

#endif

    const int16_t numlpc                                        /* i  : Number of sets of lpc                   */

);

lib_com/ivas_rom_com.c

+606 −0

File changed.

Preview size limit exceeded, changes collapsed.

lib_com/ivas_rom_com.h

+27 −0
Original line number Diff line number Diff line
@@ -400,5 +400,32 @@ extern const float ivas_fb_resp_cheby_ramp_16del[IVAS_FB_1MS_16K_SAMP + 1]; 


extern const int16_t ivas_num_active_bands[FB - WB + 1];



#ifdef SNS_MSVQ

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

 * SNS MSVQ codebooks and means

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

extern const int16_t ivas_sns_cdbks_tcx20_levels[];

extern const int16_t ivas_sns_cdbks_tcx20_bits[];



extern const int16_t ivas_sns_cdbks_tcx10_levels[];

extern const int16_t ivas_sns_cdbks_tcx10_bits[];



extern const float *const ivas_sns_cdbks_tcx20[];

extern const float *const ivas_sns_cdbks_tcx10[];



extern const float ivas_sns_means_tcx20[];

extern const float ivas_sns_means_tcx10[];



extern const int16_t ivas_sns_cdbks_side_tcx20_levels[];

extern const int16_t ivas_sns_cdbks_side_tcx20_bits[];

extern const int16_t ivas_sns_cdbks_side_tcx10_levels[];

extern const int16_t ivas_sns_cdbks_side_tcx10_bits[];



extern const float *const ivas_sns_cdbks_side_tcx20[];

extern const float ivas_sns_means_side_tcx20[];

extern const float *const ivas_sns_cdbks_side_tcx10[];

extern const float ivas_sns_means_side_tcx10[];

#endif



/* IVAS_ROM_COM_H */

#endif

lib_com/options.h

+1 −1
Original line number Diff line number Diff line
@@ -150,8 +150,8 @@ 
#define NCHAN_ISM_PARAMETER                             /* VA: make 'nchan_ism' parameter part of st_ivas/hEncoderConfig */



#define FIX_382_MASA_META_FRAMING_ASYNC                 /* Nokia: Issue 382: detect potential MASA metadata framing offset */



#define SBA2MONO                                        /* FhG: Issue 365: Adapt processing of SBA mono output to be in line with stereo output (less delay, lower complexity) */

#define SNS_MSVQ                                        /* FhG: contribution 33 - MSVQ for SNS parameters at stereo mid bitrates */



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

/* clang-format on */