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_MAIN_FIX_H 29 #define SILK_MAIN_FIX_H 30 31 #include "SigProc_FIX.h" 32 #include "structs_FIX.h" 33 #include "control.h" 34 #include "main.h" 35 #include "PLC.h" 36 #include "debug.h" 37 #include "entenc.h" 38 39 #if ((defined(OPUS_ARM_ASM) && defined(FIXED_POINT)) \ 40 || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)) 41 #include "fixed/arm/warped_autocorrelation_FIX_arm.h" 42 #endif 43 44 #ifndef FORCE_CPP_BUILD 45 #ifdef __cplusplus 46 extern "C" 47 { 48 #endif 49 #endif 50 51 #define silk_encoder_state_Fxx silk_encoder_state_FIX 52 #define silk_encode_do_VAD_Fxx silk_encode_do_VAD_FIX 53 #define silk_encode_frame_Fxx silk_encode_frame_FIX 54 55 #define QC 10 56 #define QS 13 57 58 /*********************/ 59 /* Encoder Functions */ 60 /*********************/ 61 62 /* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */ 63 void silk_HP_variable_cutoff( 64 silk_encoder_state_Fxx state_Fxx[] /* I/O Encoder states */ 65 ); 66 67 /* Encoder main function */ 68 void silk_encode_do_VAD_FIX( 69 silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ 70 opus_int activity /* I Decision of Opus voice activity detector */ 71 ); 72 73 /* Encoder main function */ 74 opus_int silk_encode_frame_FIX( 75 silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ 76 opus_int32 *pnBytesOut, /* O Pointer to number of payload bytes; */ 77 ec_enc *psRangeEnc, /* I/O compressor data structure */ 78 opus_int condCoding, /* I The type of conditional coding to use */ 79 opus_int maxBits, /* I If > 0: maximum number of output bits */ 80 opus_int useCBR /* I Flag to force constant-bitrate operation */ 81 ); 82 83 /* Initializes the Silk encoder state */ 84 opus_int silk_init_encoder( 85 silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk FIX encoder state */ 86 int arch /* I Run-time architecture */ 87 ); 88 89 /* Control the Silk encoder */ 90 opus_int silk_control_encoder( 91 silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */ 92 silk_EncControlStruct *encControl, /* I Control structure */ 93 const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */ 94 const opus_int channelNb, /* I Channel number */ 95 const opus_int force_fs_kHz 96 ); 97 98 /**************************/ 99 /* Noise shaping analysis */ 100 /**************************/ 101 /* Compute noise shaping coefficients and initial gain values */ 102 void silk_noise_shape_analysis_FIX( 103 silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ 104 silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */ 105 const opus_int16 *pitch_res, /* I LPC residual from pitch analysis */ 106 const opus_int16 *x, /* I Input signal [ frame_length + la_shape ] */ 107 int arch /* I Run-time architecture */ 108 ); 109 110 /* Autocorrelations for a warped frequency axis */ 111 void silk_warped_autocorrelation_FIX_c( 112 opus_int32 *corr, /* O Result [order + 1] */ 113 opus_int *scale, /* O Scaling of the correlation vector */ 114 const opus_int16 *input, /* I Input data to correlate */ 115 const opus_int warping_Q16, /* I Warping coefficient */ 116 const opus_int length, /* I Length of input */ 117 const opus_int order /* I Correlation order (even) */ 118 ); 119 120 #if !defined(OVERRIDE_silk_warped_autocorrelation_FIX) 121 #define silk_warped_autocorrelation_FIX(corr, scale, input, warping_Q16, length, order, arch) \ 122 ((void)(arch), silk_warped_autocorrelation_FIX_c(corr, scale, input, warping_Q16, length, order)) 123 #endif 124 125 /* Calculation of LTP state scaling */ 126 void silk_LTP_scale_ctrl_FIX( 127 silk_encoder_state_FIX *psEnc, /* I/O encoder state */ 128 silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ 129 opus_int condCoding /* I The type of conditional coding to use */ 130 ); 131 132 /**********************************************/ 133 /* Prediction Analysis */ 134 /**********************************************/ 135 /* Find pitch lags */ 136 void silk_find_pitch_lags_FIX( 137 silk_encoder_state_FIX *psEnc, /* I/O encoder state */ 138 silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ 139 opus_int16 res[], /* O residual */ 140 const opus_int16 x[], /* I Speech signal */ 141 int arch /* I Run-time architecture */ 142 ); 143 144 /* Find LPC and LTP coefficients */ 145 void silk_find_pred_coefs_FIX( 146 silk_encoder_state_FIX *psEnc, /* I/O encoder state */ 147 silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ 148 const opus_int16 res_pitch[], /* I Residual from pitch analysis */ 149 const opus_int16 x[], /* I Speech signal */ 150 opus_int condCoding /* I The type of conditional coding to use */ 151 ); 152 153 /* LPC analysis */ 154 void silk_find_LPC_FIX( 155 silk_encoder_state *psEncC, /* I/O Encoder state */ 156 opus_int16 NLSF_Q15[], /* O NLSFs */ 157 const opus_int16 x[], /* I Input signal */ 158 const opus_int32 minInvGain_Q30 /* I Inverse of max prediction gain */ 159 ); 160 161 /* LTP analysis */ 162 void silk_find_LTP_FIX( 163 opus_int32 XXLTP_Q17[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Correlation matrix */ 164 opus_int32 xXLTP_Q17[ MAX_NB_SUBFR * LTP_ORDER ], /* O Correlation vector */ 165 const opus_int16 r_lpc[], /* I Residual signal after LPC */ 166 const opus_int lag[ MAX_NB_SUBFR ], /* I LTP lags */ 167 const opus_int subfr_length, /* I Subframe length */ 168 const opus_int nb_subfr, /* I Number of subframes */ 169 int arch /* I Run-time architecture */ 170 ); 171 172 void silk_LTP_analysis_filter_FIX( 173 opus_int16 *LTP_res, /* O LTP residual signal of length MAX_NB_SUBFR * ( pre_length + subfr_length ) */ 174 const opus_int16 *x, /* I Pointer to input signal with at least max( pitchL ) preceding samples */ 175 const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ],/* I LTP_ORDER LTP coefficients for each MAX_NB_SUBFR subframe */ 176 const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag, one for each subframe */ 177 const opus_int32 invGains_Q16[ MAX_NB_SUBFR ], /* I Inverse quantization gains, one for each subframe */ 178 const opus_int subfr_length, /* I Length of each subframe */ 179 const opus_int nb_subfr, /* I Number of subframes */ 180 const opus_int pre_length /* I Length of the preceding samples starting at &x[0] for each subframe */ 181 ); 182 183 /* Calculates residual energies of input subframes where all subframes have LPC_order */ 184 /* of preceding samples */ 185 void silk_residual_energy_FIX( 186 opus_int32 nrgs[ MAX_NB_SUBFR ], /* O Residual energy per subframe */ 187 opus_int nrgsQ[ MAX_NB_SUBFR ], /* O Q value per subframe */ 188 const opus_int16 x[], /* I Input signal */ 189 opus_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ], /* I AR coefs for each frame half */ 190 const opus_int32 gains[ MAX_NB_SUBFR ], /* I Quantization gains */ 191 const opus_int subfr_length, /* I Subframe length */ 192 const opus_int nb_subfr, /* I Number of subframes */ 193 const opus_int LPC_order, /* I LPC order */ 194 int arch /* I Run-time architecture */ 195 ); 196 197 /* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */ 198 opus_int32 silk_residual_energy16_covar_FIX( 199 const opus_int16 *c, /* I Prediction vector */ 200 const opus_int32 *wXX, /* I Correlation matrix */ 201 const opus_int32 *wXx, /* I Correlation vector */ 202 opus_int32 wxx, /* I Signal energy */ 203 opus_int D, /* I Dimension */ 204 opus_int cQ /* I Q value for c vector 0 - 15 */ 205 ); 206 207 /* Processing of gains */ 208 void silk_process_gains_FIX( 209 silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ 210 silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */ 211 opus_int condCoding /* I The type of conditional coding to use */ 212 ); 213 214 /******************/ 215 /* Linear Algebra */ 216 /******************/ 217 /* Calculates correlation matrix X'*X */ 218 void silk_corrMatrix_FIX( 219 const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ 220 const opus_int L, /* I Length of vectors */ 221 const opus_int order, /* I Max lag for correlation */ 222 opus_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ] */ 223 opus_int32 *nrg, /* O Energy of x vector */ 224 opus_int *rshifts, /* O Right shifts of correlations */ 225 int arch /* I Run-time architecture */ 226 ); 227 228 /* Calculates correlation vector X'*t */ 229 void silk_corrVector_FIX( 230 const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ 231 const opus_int16 *t, /* I Target vector [L] */ 232 const opus_int L, /* I Length of vectors */ 233 const opus_int order, /* I Max lag for correlation */ 234 opus_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */ 235 const opus_int rshifts, /* I Right shifts of correlations */ 236 int arch /* I Run-time architecture */ 237 ); 238 239 #ifndef FORCE_CPP_BUILD 240 #ifdef __cplusplus 241 } 242 #endif /* __cplusplus */ 243 #endif /* FORCE_CPP_BUILD */ 244 #endif /* SILK_MAIN_FIX_H */ 245
