1 /*********************************************************************** 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. 3 Redistribution and use in source and binary forms, with or without 4 modification, are permitted provided that the following conditions 5 are met: 6 - Redistributions of source code must retain the above copyright notice, 7 this list of conditions and the following disclaimer. 8 - Redistributions in binary form must reproduce the above copyright 9 notice, this list of conditions and the following disclaimer in the 10 documentation and/or other materials provided with the distribution. 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the 12 names of specific contributors, may be used to endorse or promote 13 products derived from this software without specific prior written 14 permission. 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 POSSIBILITY OF SUCH DAMAGE. 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 36 extern "C" 37 { 38 #endif 39 40 /********************************/ 41 /* Noise shaping analysis state */ 42 /********************************/ 43 typedef 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 /********************************/ 53 typedef 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 /********************************/ 67 typedef 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 /************************/ 80 typedef 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 /************************/ 115 typedef 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