shithub: opus

ref: f7479653be7649267fd9e2096adf47862cea1a95
dir: /src_FIX/SKP_Silk_structs_FIX.h/

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/***********************************************************************
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#ifndef SKP_SILK_STRUCTS_FIX_H
#define SKP_SILK_STRUCTS_FIX_H

#include "SKP_Silk_typedef.h"
#include "SKP_Silk_main.h"
#include "SKP_Silk_structs.h"

#ifdef __cplusplus
extern "C"
{
#endif

/********************************/
/* Noise shaping analysis state */
/********************************/
typedef struct {
    SKP_int8    LastGainIndex;
    SKP_int32   HarmBoost_smth_Q16;
    SKP_int32   HarmShapeGain_smth_Q16;
    SKP_int32   Tilt_smth_Q16;
} SKP_Silk_shape_state_FIX;

/********************************/
/* Prefilter state              */
/********************************/
typedef struct {
    SKP_int16   sLTP_shp[ LTP_BUF_LENGTH ];
    SKP_int32   sAR_shp[ MAX_SHAPE_LPC_ORDER + 1 ];
    SKP_int     sLTP_shp_buf_idx;
    SKP_int32   sLF_AR_shp_Q12;
    SKP_int32   sLF_MA_shp_Q12;
    SKP_int     sHarmHP;
    SKP_int32   rand_seed;
    SKP_int     lagPrev;
} SKP_Silk_prefilter_state_FIX;

/********************************/
/* Encoder state FIX            */
/********************************/
typedef struct {
    SKP_Silk_encoder_state          sCmn;                           /* Common struct, shared with floating-point code */
    SKP_Silk_shape_state_FIX        sShape;                         /* Shape state                                                          */
    SKP_Silk_prefilter_state_FIX    sPrefilt;                       /* Prefilter State                                                      */

    /* Buffer for find pitch and noise shape analysis */
    SKP_DWORD_ALIGN SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];
    SKP_int                         LTPCorr_Q15;                    /* Normalized correlation from pitch lag estimator                      */
    SKP_int32                       SNR_dB_Q7;                      /* Quality setting                                                      */
    SKP_int                         BufferedInChannel_ms;           /* Simulated number of ms buffer because of exceeded TargetRate_bps     */

    /* Parameters For LTP scaling Control */
    SKP_int                         prevLTPredCodGain_Q7;
    SKP_int                         HPLTPredCodGain_Q7;

    SKP_int32                       inBandFEC_SNR_comp_Q7;          /* Compensation to SNR_dB when using inband FEC Voiced                  */

} SKP_Silk_encoder_state_FIX;

/************************/
/* Encoder control FIX  */
/************************/
typedef struct {
    /* Prediction and coding parameters */
    SKP_int32                   Gains_Q16[ MAX_NB_SUBFR ];
    SKP_DWORD_ALIGN SKP_int16   PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
    SKP_int16                   LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ];
    SKP_int                     LTP_scale_Q14;
    SKP_int                     pitchL[ MAX_NB_SUBFR ];

    /* Noise shaping parameters */
    /* Testing */
    SKP_DWORD_ALIGN SKP_int16 AR1_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
    SKP_DWORD_ALIGN SKP_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
    SKP_int32   LF_shp_Q14[        MAX_NB_SUBFR ];          /* Packs two int16 coefficients per int32 value             */
    SKP_int     GainsPre_Q14[      MAX_NB_SUBFR ];
    SKP_int     HarmBoost_Q14[     MAX_NB_SUBFR ];
    SKP_int     Tilt_Q14[          MAX_NB_SUBFR ];
    SKP_int     HarmShapeGain_Q14[ MAX_NB_SUBFR ];
    SKP_int     Lambda_Q10;
    SKP_int     input_quality_Q14;
    SKP_int     coding_quality_Q14;
    SKP_int     current_SNR_dB_Q7;

    /* measures */
    SKP_int     sparseness_Q8;
    SKP_int32   predGain_Q16;
    SKP_int     LTPredCodGain_Q7;
    SKP_int32   ResNrg[ MAX_NB_SUBFR ];             /* Residual energy per subframe                             */
    SKP_int     ResNrgQ[ MAX_NB_SUBFR ];            /* Q domain for the residual energy > 0                     */
    
} SKP_Silk_encoder_control_FIX;


#ifdef __cplusplus
}
#endif

#endif