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