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/***********************************************************************
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, (subject to the limitations in the disclaimer below)
are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Skype Limited, nor the names of specific
contributors, may be used to endorse or promote products derived from
this software without specific prior written permission.
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
***********************************************************************/
#ifndef SKP_SILK_STRUCTS_FLP_H
#define SKP_SILK_STRUCTS_FLP_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_float HarmBoost_smth;
SKP_float HarmShapeGain_smth;
SKP_float Tilt_smth;
} SKP_Silk_shape_state_FLP;
/********************************/
/* Prefilter state */
/********************************/
typedef struct {
SKP_float sLTP_shp[ LTP_BUF_LENGTH ];
SKP_float sAR_shp[ MAX_SHAPE_LPC_ORDER + 1 ];
SKP_int sLTP_shp_buf_idx;
SKP_float sLF_AR_shp;
SKP_float sLF_MA_shp;
SKP_float sHarmHP;
SKP_int32 rand_seed;
SKP_int lagPrev;
} SKP_Silk_prefilter_state_FLP;
/********************************/
/* Encoder state FLP */
/********************************/
typedef struct {
SKP_Silk_encoder_state sCmn; /* Common struct, shared with fixed-point code */
SKP_Silk_shape_state_FLP sShape; /* Noise shaping state */
SKP_Silk_prefilter_state_FLP sPrefilt; /* Prefilter State */
/* Buffer for find pitch and noise shape analysis */
SKP_float x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];/* Buffer for find pitch and noise shape analysis */
SKP_float LTPCorr; /* Normalized correlation from pitch lag estimator */
/* Parameters for LTP scaling control */
SKP_float prevLTPredCodGain;
SKP_float HPLTPredCodGain;
} SKP_Silk_encoder_state_FLP;
/************************/
/* Encoder control FLP */
/************************/
typedef struct {
/* Prediction and coding parameters */
SKP_float Gains[MAX_NB_SUBFR];
SKP_float PredCoef[ 2 ][ MAX_LPC_ORDER ]; /* holds interpolated and final coefficients */
SKP_float LTPCoef[LTP_ORDER * MAX_NB_SUBFR];
SKP_float LTP_scale;
SKP_int pitchL[ MAX_NB_SUBFR ];
/* Noise shaping parameters */
SKP_float AR1[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
SKP_float AR2[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
SKP_float LF_MA_shp[ MAX_NB_SUBFR ];
SKP_float LF_AR_shp[ MAX_NB_SUBFR ];
SKP_float GainsPre[ MAX_NB_SUBFR ];
SKP_float HarmBoost[ MAX_NB_SUBFR ];
SKP_float Tilt[ MAX_NB_SUBFR ];
SKP_float HarmShapeGain[ MAX_NB_SUBFR ];
SKP_float Lambda;
SKP_float input_quality;
SKP_float coding_quality;
/* Measures */
SKP_float sparseness;
SKP_float predGain;
SKP_float LTPredCodGain;
SKP_float ResNrg[ MAX_NB_SUBFR ]; /* Residual energy per subframe */
} SKP_Silk_encoder_control_FLP;
#ifdef __cplusplus
}
#endif
#endif
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