1/***********************************************************************
2Copyright (c) 2006-2011, Skype Limited. All rights reserved.
3Redistribution and use in source and binary forms, with or without
4modification, are permitted provided that the following conditions
5are met:
6- Redistributions of source code must retain the above copyright notice,
7this list of conditions and the following disclaimer.
8- Redistributions in binary form must reproduce the above copyright
9notice, this list of conditions and the following disclaimer in the
10documentation and/or other materials provided with the distribution.
11- Neither the name of Internet Society, IETF or IETF Trust, nor the
12names of specific contributors, may be used to endorse or promote
13products derived from this software without specific prior written
14permission.
15THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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24ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26***********************************************************************/
27
28#ifndef SILK_STRUCTS_FLP_H
29#define SILK_STRUCTS_FLP_H
30
31#include "typedef.h"
32#include "main.h"
33#include "structs.h"
34
35#ifdef __cplusplus
36extern "C"
37{
38#endif
39
40/********************************/
41/* Noise shaping analysis state */
42/********************************/
43typedef struct {
44    opus_int8                   LastGainIndex;
45    silk_float                  HarmBoost_smth;
46    silk_float                  HarmShapeGain_smth;
47    silk_float                  Tilt_smth;
48} silk_shape_state_FLP;
49
50/********************************/
51/* Prefilter state              */
52/********************************/
53typedef struct {
54    silk_float                  sLTP_shp[ LTP_BUF_LENGTH ];
55    silk_float                  sAR_shp[ MAX_SHAPE_LPC_ORDER + 1 ];
56    opus_int                    sLTP_shp_buf_idx;
57    silk_float                  sLF_AR_shp;
58    silk_float                  sLF_MA_shp;
59    silk_float                  sHarmHP;
60    opus_int32                  rand_seed;
61    opus_int                    lagPrev;
62} silk_prefilter_state_FLP;
63
64/********************************/
65/* Encoder state FLP            */
66/********************************/
67typedef struct {
68    silk_encoder_state          sCmn;                               /* Common struct, shared with fixed-point code */
69    silk_shape_state_FLP        sShape;                             /* Noise shaping state */
70    silk_prefilter_state_FLP    sPrefilt;                           /* Prefilter State */
71
72    /* Buffer for find pitch and noise shape analysis */
73    silk_float                  x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];/* Buffer for find pitch and noise shape analysis */
74    silk_float                  LTPCorr;                            /* Normalized correlation from pitch lag estimator */
75} silk_encoder_state_FLP;
76
77/************************/
78/* Encoder control FLP  */
79/************************/
80typedef struct {
81    /* Prediction and coding parameters */
82    silk_float                  Gains[ MAX_NB_SUBFR ];
83    silk_float                  PredCoef[ 2 ][ MAX_LPC_ORDER ];     /* holds interpolated and final coefficients */
84    silk_float                  LTPCoef[LTP_ORDER * MAX_NB_SUBFR];
85    silk_float                  LTP_scale;
86    opus_int                    pitchL[ MAX_NB_SUBFR ];
87
88    /* Noise shaping parameters */
89    silk_float                  AR1[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
90    silk_float                  AR2[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
91    silk_float                  LF_MA_shp[     MAX_NB_SUBFR ];
92    silk_float                  LF_AR_shp[     MAX_NB_SUBFR ];
93    silk_float                  GainsPre[      MAX_NB_SUBFR ];
94    silk_float                  HarmBoost[     MAX_NB_SUBFR ];
95    silk_float                  Tilt[          MAX_NB_SUBFR ];
96    silk_float                  HarmShapeGain[ MAX_NB_SUBFR ];
97    silk_float                  Lambda;
98    silk_float                  input_quality;
99    silk_float                  coding_quality;
100
101    /* Measures */
102    silk_float                  sparseness;
103    silk_float                  predGain;
104    silk_float                  LTPredCodGain;
105    silk_float                  ResNrg[ MAX_NB_SUBFR ];             /* Residual energy per subframe */
106
107    /* Parameters for CBR mode */
108    opus_int32                  GainsUnq_Q16[ MAX_NB_SUBFR ];
109    opus_int8                   lastGainIndexPrev;
110} silk_encoder_control_FLP;
111
112/************************/
113/* Encoder Super Struct */
114/************************/
115typedef struct {
116    silk_encoder_state_FLP      state_Fxx[ ENCODER_NUM_CHANNELS ];
117    stereo_enc_state            sStereo;
118    opus_int32                  nBitsExceeded;
119    opus_int                    nChannelsAPI;
120    opus_int                    nChannelsInternal;
121    opus_int                    nPrevChannelsInternal;
122    opus_int                    timeSinceSwitchAllowed_ms;
123    opus_int                    allowBandwidthSwitch;
124    opus_int                    prev_decode_only_middle;
125} silk_encoder;
126
127#ifdef __cplusplus
128}
129#endif
130
131#endif
132