shithub: opus

ref: 8891068b2427a22cef711fa1c98a0712dc09b324
dir: /silk/fixed/silk_structs_FIX.h/

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/***********************************************************************
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are permitted provided that the following conditions are met:
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- Redistributions in binary form must reproduce the above copyright
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documentation and/or other materials provided with the distribution.
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this software without specific prior written permission.
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BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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***********************************************************************/

#ifndef SILK_STRUCTS_FIX_H
#define SILK_STRUCTS_FIX_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;
    opus_int32   HarmBoost_smth_Q16;
    opus_int32   HarmShapeGain_smth_Q16;
    opus_int32   Tilt_smth_Q16;
} silk_shape_state_FIX;

/********************************/
/* Prefilter state              */
/********************************/
typedef struct {
    opus_int16   sLTP_shp[ LTP_BUF_LENGTH ];
    opus_int32   sAR_shp[ MAX_SHAPE_LPC_ORDER + 1 ];
    opus_int     sLTP_shp_buf_idx;
    opus_int32   sLF_AR_shp_Q12;
    opus_int32   sLF_MA_shp_Q12;
    opus_int     sHarmHP;
    opus_int32   rand_seed;
    opus_int     lagPrev;
} silk_prefilter_state_FIX;

/********************************/
/* Encoder state FIX            */
/********************************/
typedef struct {
    silk_encoder_state          sCmn;                       /* Common struct, shared with floating-point code                   */
    silk_shape_state_FIX        sShape;                     /* Shape state                                                      */
    silk_prefilter_state_FIX    sPrefilt;                   /* Prefilter State                                                  */

    /* Buffer for find pitch and noise shape analysis */
    SKP_DWORD_ALIGN opus_int16   x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];/* Buffer for find pitch and noise shape analysis  */
    opus_int                     LTPCorr_Q15;                /* Normalized correlation from pitch lag estimator                  */

    /* Parameters For LTP scaling Control */
    opus_int                     prevLTPredCodGain_Q7;
    opus_int                     HPLTPredCodGain_Q7;
} silk_encoder_state_FIX;

/************************/
/* Encoder control FIX  */
/************************/
typedef struct {
    /* Prediction and coding parameters */
    opus_int32                   Gains_Q16[ MAX_NB_SUBFR ];
    SKP_DWORD_ALIGN opus_int16   PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
    opus_int16                   LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ];
    opus_int                     LTP_scale_Q14;
    opus_int                     pitchL[ MAX_NB_SUBFR ];

    /* Noise shaping parameters */
    /* Testing */
    SKP_DWORD_ALIGN opus_int16 AR1_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
    SKP_DWORD_ALIGN opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
    opus_int32   LF_shp_Q14[        MAX_NB_SUBFR ];          /* Packs two int16 coefficients per int32 value             */
    opus_int     GainsPre_Q14[      MAX_NB_SUBFR ];
    opus_int     HarmBoost_Q14[     MAX_NB_SUBFR ];
    opus_int     Tilt_Q14[          MAX_NB_SUBFR ];
    opus_int     HarmShapeGain_Q14[ MAX_NB_SUBFR ];
    opus_int     Lambda_Q10;
    opus_int     input_quality_Q14;
    opus_int     coding_quality_Q14;

    /* measures */
    opus_int     sparseness_Q8;
    opus_int32   predGain_Q16;
    opus_int     LTPredCodGain_Q7;
    opus_int32   ResNrg[ MAX_NB_SUBFR ];             /* Residual energy per subframe                             */
    opus_int     ResNrgQ[ MAX_NB_SUBFR ];            /* Q domain for the residual energy > 0                     */

} silk_encoder_control_FIX;

/************************/
/* Encoder Super Struct */
/************************/
typedef struct {
    silk_encoder_state_FIX  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