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1 /***********************************************************************
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2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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3 Redistribution and use in source and binary forms, with or without
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4 modification, are permitted provided that the following conditions
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5 are met:
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6 - Redistributions of source code must retain the above copyright notice,
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7 this list of conditions and the following disclaimer.
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8 - Redistributions in binary form must reproduce the above copyright
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9 notice, this list of conditions and the following disclaimer in the
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10 documentation and/or other materials provided with the distribution.
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11 - Neither the name of Internet Society, IETF or IETF Trust, nor the
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12 names of specific contributors, may be used to endorse or promote
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13 products derived from this software without specific prior written
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14 permission.
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15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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25 POSSIBILITY OF SUCH DAMAGE.
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26 ***********************************************************************/
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27
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28 #ifndef SILK_STRUCTS_FLP_H
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29 #define SILK_STRUCTS_FLP_H
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30
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31 #include "typedef.h"
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32 #include "main.h"
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33 #include "structs.h"
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34
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35 #ifdef __cplusplus
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36 extern "C"
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37 {
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38 #endif
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39
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40 /********************************/
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41 /* Noise shaping analysis state */
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42 /********************************/
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43 typedef struct {
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44 opus_int8 LastGainIndex;
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45 silk_float HarmShapeGain_smth;
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46 silk_float Tilt_smth;
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47 } silk_shape_state_FLP;
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48
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49 /********************************/
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50 /* Encoder state FLP */
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51 /********************************/
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52 typedef struct {
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53 silk_encoder_state sCmn; /* Common struct, shared with fixed-point code */
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54 silk_shape_state_FLP sShape; /* Noise shaping state */
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55
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56 /* Buffer for find pitch and noise shape analysis */
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57 silk_float x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ];/* Buffer for find pitch and noise shape analysis */
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58 silk_float LTPCorr; /* Normalized correlation from pitch lag estimator */
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59 } silk_encoder_state_FLP;
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60
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61 /************************/
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62 /* Encoder control FLP */
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63 /************************/
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64 typedef struct {
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65 /* Prediction and coding parameters */
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66 silk_float Gains[ MAX_NB_SUBFR ];
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67 silk_float PredCoef[ 2 ][ MAX_LPC_ORDER ]; /* holds interpolated and final coefficients */
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68 silk_float LTPCoef[LTP_ORDER * MAX_NB_SUBFR];
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69 silk_float LTP_scale;
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70 opus_int pitchL[ MAX_NB_SUBFR ];
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71
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72 /* Noise shaping parameters */
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73 silk_float AR[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
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74 silk_float LF_MA_shp[ MAX_NB_SUBFR ];
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75 silk_float LF_AR_shp[ MAX_NB_SUBFR ];
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76 silk_float Tilt[ MAX_NB_SUBFR ];
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77 silk_float HarmShapeGain[ MAX_NB_SUBFR ];
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78 silk_float Lambda;
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79 silk_float input_quality;
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80 silk_float coding_quality;
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81
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82 /* Measures */
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83 silk_float predGain;
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84 silk_float LTPredCodGain;
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85 silk_float ResNrg[ MAX_NB_SUBFR ]; /* Residual energy per subframe */
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86
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87 /* Parameters for CBR mode */
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88 opus_int32 GainsUnq_Q16[ MAX_NB_SUBFR ];
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89 opus_int8 lastGainIndexPrev;
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90 } silk_encoder_control_FLP;
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91
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92 /************************/
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93 /* Encoder Super Struct */
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94 /************************/
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95 typedef struct {
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96 silk_encoder_state_FLP state_Fxx[ ENCODER_NUM_CHANNELS ];
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97 stereo_enc_state sStereo;
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98 opus_int32 nBitsUsedLBRR;
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99 opus_int32 nBitsExceeded;
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100 opus_int nChannelsAPI;
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101 opus_int nChannelsInternal;
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102 opus_int nPrevChannelsInternal;
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103 opus_int timeSinceSwitchAllowed_ms;
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104 opus_int allowBandwidthSwitch;
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105 opus_int prev_decode_only_middle;
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106 } silk_encoder;
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107
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108 #ifdef __cplusplus
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109 }
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110 #endif
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111
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112 #endif
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