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