ref: 66767ee837b6bd545f982e6f89f563e02b507ea1
dir: /silk/float/structs_FLP.h/
/***********************************************************************
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- Redistributions in binary form must reproduce the above copyright
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***********************************************************************/
#ifndef SILK_STRUCTS_FLP_H
#define SILK_STRUCTS_FLP_H
#include "typedef.h"
#include "main.h"
#include "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 */
/* Parameters for CBR mode */
opus_int32 GainsUnq_Q16[ MAX_NB_SUBFR ];
opus_int8 lastGainIndexPrev;
} 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 nPrevChannelsInternal;
opus_int timeSinceSwitchAllowed_ms;
opus_int allowBandwidthSwitch;
opus_int prev_decode_only_middle;
} silk_encoder;
#ifdef __cplusplus
}
#endif
#endif