1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libopus/silk/fixed/main_FIX.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,257 @@
1.4 +/***********************************************************************
1.5 +Copyright (c) 2006-2011, Skype Limited. All rights reserved.
1.6 +Redistribution and use in source and binary forms, with or without
1.7 +modification, are permitted provided that the following conditions
1.8 +are met:
1.9 +- Redistributions of source code must retain the above copyright notice,
1.10 +this list of conditions and the following disclaimer.
1.11 +- Redistributions in binary form must reproduce the above copyright
1.12 +notice, this list of conditions and the following disclaimer in the
1.13 +documentation and/or other materials provided with the distribution.
1.14 +- Neither the name of Internet Society, IETF or IETF Trust, nor the
1.15 +names of specific contributors, may be used to endorse or promote
1.16 +products derived from this software without specific prior written
1.17 +permission.
1.18 +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
1.19 +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.20 +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.21 +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
1.22 +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.23 +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.24 +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.25 +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.26 +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.27 +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.28 +POSSIBILITY OF SUCH DAMAGE.
1.29 +***********************************************************************/
1.30 +
1.31 +#ifndef SILK_MAIN_FIX_H
1.32 +#define SILK_MAIN_FIX_H
1.33 +
1.34 +#include "SigProc_FIX.h"
1.35 +#include "structs_FIX.h"
1.36 +#include "control.h"
1.37 +#include "main.h"
1.38 +#include "PLC.h"
1.39 +#include "debug.h"
1.40 +#include "entenc.h"
1.41 +
1.42 +#ifndef FORCE_CPP_BUILD
1.43 +#ifdef __cplusplus
1.44 +extern "C"
1.45 +{
1.46 +#endif
1.47 +#endif
1.48 +
1.49 +#define silk_encoder_state_Fxx silk_encoder_state_FIX
1.50 +#define silk_encode_do_VAD_Fxx silk_encode_do_VAD_FIX
1.51 +#define silk_encode_frame_Fxx silk_encode_frame_FIX
1.52 +
1.53 +/*********************/
1.54 +/* Encoder Functions */
1.55 +/*********************/
1.56 +
1.57 +/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */
1.58 +void silk_HP_variable_cutoff(
1.59 + silk_encoder_state_Fxx state_Fxx[] /* I/O Encoder states */
1.60 +);
1.61 +
1.62 +/* Encoder main function */
1.63 +void silk_encode_do_VAD_FIX(
1.64 + silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk FIX encoder state */
1.65 +);
1.66 +
1.67 +/* Encoder main function */
1.68 +opus_int silk_encode_frame_FIX(
1.69 + silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
1.70 + opus_int32 *pnBytesOut, /* O Pointer to number of payload bytes; */
1.71 + ec_enc *psRangeEnc, /* I/O compressor data structure */
1.72 + opus_int condCoding, /* I The type of conditional coding to use */
1.73 + opus_int maxBits, /* I If > 0: maximum number of output bits */
1.74 + opus_int useCBR /* I Flag to force constant-bitrate operation */
1.75 +);
1.76 +
1.77 +/* Initializes the Silk encoder state */
1.78 +opus_int silk_init_encoder(
1.79 + silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk FIX encoder state */
1.80 + int arch /* I Run-time architecture */
1.81 +);
1.82 +
1.83 +/* Control the Silk encoder */
1.84 +opus_int silk_control_encoder(
1.85 + silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */
1.86 + silk_EncControlStruct *encControl, /* I Control structure */
1.87 + const opus_int32 TargetRate_bps, /* I Target max bitrate (bps) */
1.88 + const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */
1.89 + const opus_int channelNb, /* I Channel number */
1.90 + const opus_int force_fs_kHz
1.91 +);
1.92 +
1.93 +/****************/
1.94 +/* Prefiltering */
1.95 +/****************/
1.96 +void silk_prefilter_FIX(
1.97 + silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
1.98 + const silk_encoder_control_FIX *psEncCtrl, /* I Encoder control */
1.99 + opus_int32 xw_Q10[], /* O Weighted signal */
1.100 + const opus_int16 x[] /* I Speech signal */
1.101 +);
1.102 +
1.103 +/**************************/
1.104 +/* Noise shaping analysis */
1.105 +/**************************/
1.106 +/* Compute noise shaping coefficients and initial gain values */
1.107 +void silk_noise_shape_analysis_FIX(
1.108 + silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
1.109 + silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */
1.110 + const opus_int16 *pitch_res, /* I LPC residual from pitch analysis */
1.111 + const opus_int16 *x, /* I Input signal [ frame_length + la_shape ] */
1.112 + int arch /* I Run-time architecture */
1.113 +);
1.114 +
1.115 +/* Autocorrelations for a warped frequency axis */
1.116 +void silk_warped_autocorrelation_FIX(
1.117 + opus_int32 *corr, /* O Result [order + 1] */
1.118 + opus_int *scale, /* O Scaling of the correlation vector */
1.119 + const opus_int16 *input, /* I Input data to correlate */
1.120 + const opus_int warping_Q16, /* I Warping coefficient */
1.121 + const opus_int length, /* I Length of input */
1.122 + const opus_int order /* I Correlation order (even) */
1.123 +);
1.124 +
1.125 +/* Calculation of LTP state scaling */
1.126 +void silk_LTP_scale_ctrl_FIX(
1.127 + silk_encoder_state_FIX *psEnc, /* I/O encoder state */
1.128 + silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
1.129 + opus_int condCoding /* I The type of conditional coding to use */
1.130 +);
1.131 +
1.132 +/**********************************************/
1.133 +/* Prediction Analysis */
1.134 +/**********************************************/
1.135 +/* Find pitch lags */
1.136 +void silk_find_pitch_lags_FIX(
1.137 + silk_encoder_state_FIX *psEnc, /* I/O encoder state */
1.138 + silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
1.139 + opus_int16 res[], /* O residual */
1.140 + const opus_int16 x[], /* I Speech signal */
1.141 + int arch /* I Run-time architecture */
1.142 +);
1.143 +
1.144 +/* Find LPC and LTP coefficients */
1.145 +void silk_find_pred_coefs_FIX(
1.146 + silk_encoder_state_FIX *psEnc, /* I/O encoder state */
1.147 + silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
1.148 + const opus_int16 res_pitch[], /* I Residual from pitch analysis */
1.149 + const opus_int16 x[], /* I Speech signal */
1.150 + opus_int condCoding /* I The type of conditional coding to use */
1.151 +);
1.152 +
1.153 +/* LPC analysis */
1.154 +void silk_find_LPC_FIX(
1.155 + silk_encoder_state *psEncC, /* I/O Encoder state */
1.156 + opus_int16 NLSF_Q15[], /* O NLSFs */
1.157 + const opus_int16 x[], /* I Input signal */
1.158 + const opus_int32 minInvGain_Q30 /* I Inverse of max prediction gain */
1.159 +);
1.160 +
1.161 +/* LTP analysis */
1.162 +void silk_find_LTP_FIX(
1.163 + opus_int16 b_Q14[ MAX_NB_SUBFR * LTP_ORDER ], /* O LTP coefs */
1.164 + opus_int32 WLTP[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */
1.165 + opus_int *LTPredCodGain_Q7, /* O LTP coding gain */
1.166 + const opus_int16 r_lpc[], /* I residual signal after LPC signal + state for first 10 ms */
1.167 + const opus_int lag[ MAX_NB_SUBFR ], /* I LTP lags */
1.168 + const opus_int32 Wght_Q15[ MAX_NB_SUBFR ], /* I weights */
1.169 + const opus_int subfr_length, /* I subframe length */
1.170 + const opus_int nb_subfr, /* I number of subframes */
1.171 + const opus_int mem_offset, /* I number of samples in LTP memory */
1.172 + opus_int corr_rshifts[ MAX_NB_SUBFR ] /* O right shifts applied to correlations */
1.173 +);
1.174 +
1.175 +void silk_LTP_analysis_filter_FIX(
1.176 + opus_int16 *LTP_res, /* O LTP residual signal of length MAX_NB_SUBFR * ( pre_length + subfr_length ) */
1.177 + const opus_int16 *x, /* I Pointer to input signal with at least max( pitchL ) preceding samples */
1.178 + const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ],/* I LTP_ORDER LTP coefficients for each MAX_NB_SUBFR subframe */
1.179 + const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag, one for each subframe */
1.180 + const opus_int32 invGains_Q16[ MAX_NB_SUBFR ], /* I Inverse quantization gains, one for each subframe */
1.181 + const opus_int subfr_length, /* I Length of each subframe */
1.182 + const opus_int nb_subfr, /* I Number of subframes */
1.183 + const opus_int pre_length /* I Length of the preceding samples starting at &x[0] for each subframe */
1.184 +);
1.185 +
1.186 +/* Calculates residual energies of input subframes where all subframes have LPC_order */
1.187 +/* of preceding samples */
1.188 +void silk_residual_energy_FIX(
1.189 + opus_int32 nrgs[ MAX_NB_SUBFR ], /* O Residual energy per subframe */
1.190 + opus_int nrgsQ[ MAX_NB_SUBFR ], /* O Q value per subframe */
1.191 + const opus_int16 x[], /* I Input signal */
1.192 + opus_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ], /* I AR coefs for each frame half */
1.193 + const opus_int32 gains[ MAX_NB_SUBFR ], /* I Quantization gains */
1.194 + const opus_int subfr_length, /* I Subframe length */
1.195 + const opus_int nb_subfr, /* I Number of subframes */
1.196 + const opus_int LPC_order /* I LPC order */
1.197 +);
1.198 +
1.199 +/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */
1.200 +opus_int32 silk_residual_energy16_covar_FIX(
1.201 + const opus_int16 *c, /* I Prediction vector */
1.202 + const opus_int32 *wXX, /* I Correlation matrix */
1.203 + const opus_int32 *wXx, /* I Correlation vector */
1.204 + opus_int32 wxx, /* I Signal energy */
1.205 + opus_int D, /* I Dimension */
1.206 + opus_int cQ /* I Q value for c vector 0 - 15 */
1.207 +);
1.208 +
1.209 +/* Processing of gains */
1.210 +void silk_process_gains_FIX(
1.211 + silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
1.212 + silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */
1.213 + opus_int condCoding /* I The type of conditional coding to use */
1.214 +);
1.215 +
1.216 +/******************/
1.217 +/* Linear Algebra */
1.218 +/******************/
1.219 +/* Calculates correlation matrix X'*X */
1.220 +void silk_corrMatrix_FIX(
1.221 + const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
1.222 + const opus_int L, /* I Length of vectors */
1.223 + const opus_int order, /* I Max lag for correlation */
1.224 + const opus_int head_room, /* I Desired headroom */
1.225 + opus_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ] */
1.226 + opus_int *rshifts /* I/O Right shifts of correlations */
1.227 +);
1.228 +
1.229 +/* Calculates correlation vector X'*t */
1.230 +void silk_corrVector_FIX(
1.231 + const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
1.232 + const opus_int16 *t, /* I Target vector [L] */
1.233 + const opus_int L, /* I Length of vectors */
1.234 + const opus_int order, /* I Max lag for correlation */
1.235 + opus_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */
1.236 + const opus_int rshifts /* I Right shifts of correlations */
1.237 +);
1.238 +
1.239 +/* Add noise to matrix diagonal */
1.240 +void silk_regularize_correlations_FIX(
1.241 + opus_int32 *XX, /* I/O Correlation matrices */
1.242 + opus_int32 *xx, /* I/O Correlation values */
1.243 + opus_int32 noise, /* I Noise to add */
1.244 + opus_int D /* I Dimension of XX */
1.245 +);
1.246 +
1.247 +/* Solves Ax = b, assuming A is symmetric */
1.248 +void silk_solve_LDL_FIX(
1.249 + opus_int32 *A, /* I Pointer to symetric square matrix A */
1.250 + opus_int M, /* I Size of matrix */
1.251 + const opus_int32 *b, /* I Pointer to b vector */
1.252 + opus_int32 *x_Q16 /* O Pointer to x solution vector */
1.253 +);
1.254 +
1.255 +#ifndef FORCE_CPP_BUILD
1.256 +#ifdef __cplusplus
1.257 +}
1.258 +#endif /* __cplusplus */
1.259 +#endif /* FORCE_CPP_BUILD */
1.260 +#endif /* SILK_MAIN_FIX_H */
