Alexandre Lision | 744f742 | 2013-09-25 11:39:37 -0400 | [diff] [blame] | 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 |