silk/float/silk_structs_FLP.h

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#ifndef SILK_STRUCTS_FLP_H
#define SILK_STRUCTS_FLP_H

#include "silk_typedef.h"
#include "silk_main.h"
#include "silk_structs.h"

#ifdef __cplusplus
extern "C"
{
#endif

/********************************/
/* Noise shaping analysis state */
/********************************/
typedef struct {
    opus_int8    LastGainIndex;
    silk_float   HarmBoost_smth;
    silk_float   HarmShapeGain_smth;
    silk_float   Tilt_smth;
} silk_shape_state_FLP;

/********************************/
/* Prefilter state              */
/********************************/
typedef struct {
    silk_float   sLTP_shp[ LTP_BUF_LENGTH ];
    silk_float   sAR_shp[ MAX_SHAPE_LPC_ORDER + 1 ];
    opus_int     sLTP_shp_buf_idx;
    silk_float   sLF_AR_shp;
    silk_float   sLF_MA_shp;
    silk_float   sHarmHP;
    opus_int32   rand_seed;
    opus_int     lagPrev;
} silk_prefilter_state_FLP;

/********************************/
/* Encoder state FLP            */
/********************************/
typedef struct {
    silk_encoder_state          sCmn;                       /* Common struct, shared with fixed-point code */
    silk_shape_state_FLP        sShape;                     /* Noise shaping state */
    silk_prefilter_state_FLP    sPrefilt;                   /* Prefilter State */

    /* Buffer for find pitch and noise shape analysis */
    silk_float                   x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];/* Buffer for find pitch and noise shape analysis */
    silk_float                   LTPCorr;                    /* Normalized correlation from pitch lag estimator */

    /* Parameters for LTP scaling control */
    silk_float                   prevLTPredCodGain;
    silk_float                   HPLTPredCodGain;
} silk_encoder_state_FLP;

/************************/
/* Encoder control FLP  */
/************************/
typedef struct {
    /* Prediction and coding parameters */
    silk_float                    Gains[ MAX_NB_SUBFR ];
    silk_float                    PredCoef[ 2 ][ MAX_LPC_ORDER ];        /* holds interpolated and final coefficients */
    silk_float                    LTPCoef[LTP_ORDER * MAX_NB_SUBFR];
    silk_float                    LTP_scale;
    opus_int                     pitchL[ MAX_NB_SUBFR ];

    /* Noise shaping parameters */
    silk_float                    AR1[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
    silk_float                    AR2[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
    silk_float                    LF_MA_shp[     MAX_NB_SUBFR ];
    silk_float                    LF_AR_shp[     MAX_NB_SUBFR ];
    silk_float                    GainsPre[      MAX_NB_SUBFR ];
    silk_float                    HarmBoost[     MAX_NB_SUBFR ];
    silk_float                    Tilt[          MAX_NB_SUBFR ];
    silk_float                    HarmShapeGain[ MAX_NB_SUBFR ];
    silk_float                    Lambda;
    silk_float                    input_quality;
    silk_float                    coding_quality;

    /* Measures */
    silk_float                    sparseness;
    silk_float                   predGain;
    silk_float                    LTPredCodGain;
    silk_float                    ResNrg[ MAX_NB_SUBFR ];                    /* Residual energy per subframe */
} silk_encoder_control_FLP;

/************************/
/* Encoder Super Struct */
/************************/
typedef struct {
    silk_encoder_state_FLP      state_Fxx[ ENCODER_NUM_CHANNELS ];
    stereo_enc_state            sStereo;
    opus_int32                   nBitsExceeded;
    opus_int                     nChannelsAPI;
    opus_int                     nChannelsInternal;
    opus_int                     timeSinceSwitchAllowed_ms;
    opus_int                     allowBandwidthSwitch;
} silk_encoder;

#ifdef __cplusplus
}
#endif

#endif