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-/***********************************************************************
-Copyright (c) 2006-2011, Skype Limited. All rights reserved.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-- Redistributions of source code must retain the above copyright notice,
-this list of conditions and the following disclaimer.
-- Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
-- Neither the name of Internet Society, IETF or IETF Trust, nor the
-names of specific contributors, may be used to endorse or promote
-products derived from this software without specific prior written
-permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-***********************************************************************/
-
-#ifndef SILK_MAIN_FIX_H
-#define SILK_MAIN_FIX_H
-
-#include "SigProc_FIX.h"
-#include "structs_FIX.h"
-#include "control.h"
-#include "main.h"
-#include "PLC.h"
-#include "debug.h"
-#include "entenc.h"
-
-#ifndef FORCE_CPP_BUILD
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-#endif
-
-#define silk_encoder_state_Fxx silk_encoder_state_FIX
-#define silk_encode_do_VAD_Fxx silk_encode_do_VAD_FIX
-#define silk_encode_frame_Fxx silk_encode_frame_FIX
-
-/*********************/
-/* Encoder Functions */
-/*********************/
-
-/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */
-void silk_HP_variable_cutoff(
- silk_encoder_state_Fxx state_Fxx[] /* I/O Encoder states */
-);
-
-/* Encoder main function */
-void silk_encode_do_VAD_FIX(
- silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk FIX encoder state */
-);
-
-/* Encoder main function */
-opus_int silk_encode_frame_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */
- opus_int32 *pnBytesOut, /* O Pointer to number of payload bytes; */
- ec_enc *psRangeEnc, /* I/O compressor data structure */
- opus_int condCoding, /* I The type of conditional coding to use */
- opus_int maxBits, /* I If > 0: maximum number of output bits */
- opus_int useCBR /* I Flag to force constant-bitrate operation */
-);
-
-/* Initializes the Silk encoder state */
-opus_int silk_init_encoder(
- silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk FIX encoder state */
- int arch /* I Run-time architecture */
-);
-
-/* Control the Silk encoder */
-opus_int silk_control_encoder(
- silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */
- silk_EncControlStruct *encControl, /* I Control structure */
- const opus_int32 TargetRate_bps, /* I Target max bitrate (bps) */
- const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */
- const opus_int channelNb, /* I Channel number */
- const opus_int force_fs_kHz
-);
-
-/****************/
-/* Prefiltering */
-/****************/
-void silk_prefilter_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
- const silk_encoder_control_FIX *psEncCtrl, /* I Encoder control */
- opus_int32 xw_Q10[], /* O Weighted signal */
- const opus_int16 x[] /* I Speech signal */
-);
-
-void silk_warped_LPC_analysis_filter_FIX_c(
- opus_int32 state[], /* I/O State [order + 1] */
- opus_int32 res_Q2[], /* O Residual signal [length] */
- const opus_int16 coef_Q13[], /* I Coefficients [order] */
- const opus_int16 input[], /* I Input signal [length] */
- const opus_int16 lambda_Q16, /* I Warping factor */
- const opus_int length, /* I Length of input signal */
- const opus_int order /* I Filter order (even) */
-);
-
-
-/**************************/
-/* Noise shaping analysis */
-/**************************/
-/* Compute noise shaping coefficients and initial gain values */
-void silk_noise_shape_analysis_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */
- silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */
- const opus_int16 *pitch_res, /* I LPC residual from pitch analysis */
- const opus_int16 *x, /* I Input signal [ frame_length + la_shape ] */
- int arch /* I Run-time architecture */
-);
-
-/* Autocorrelations for a warped frequency axis */
-void silk_warped_autocorrelation_FIX(
- opus_int32 *corr, /* O Result [order + 1] */
- opus_int *scale, /* O Scaling of the correlation vector */
- const opus_int16 *input, /* I Input data to correlate */
- const opus_int warping_Q16, /* I Warping coefficient */
- const opus_int length, /* I Length of input */
- const opus_int order /* I Correlation order (even) */
-);
-
-/* Calculation of LTP state scaling */
-void silk_LTP_scale_ctrl_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O encoder state */
- silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
- opus_int condCoding /* I The type of conditional coding to use */
-);
-
-/**********************************************/
-/* Prediction Analysis */
-/**********************************************/
-/* Find pitch lags */
-void silk_find_pitch_lags_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O encoder state */
- silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
- opus_int16 res[], /* O residual */
- const opus_int16 x[], /* I Speech signal */
- int arch /* I Run-time architecture */
-);
-
-/* Find LPC and LTP coefficients */
-void silk_find_pred_coefs_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O encoder state */
- silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */
- const opus_int16 res_pitch[], /* I Residual from pitch analysis */
- const opus_int16 x[], /* I Speech signal */
- opus_int condCoding /* I The type of conditional coding to use */
-);
-
-/* LPC analysis */
-void silk_find_LPC_FIX(
- silk_encoder_state *psEncC, /* I/O Encoder state */
- opus_int16 NLSF_Q15[], /* O NLSFs */
- const opus_int16 x[], /* I Input signal */
- const opus_int32 minInvGain_Q30 /* I Inverse of max prediction gain */
-);
-
-/* LTP analysis */
-void silk_find_LTP_FIX(
- opus_int16 b_Q14[ MAX_NB_SUBFR * LTP_ORDER ], /* O LTP coefs */
- opus_int32 WLTP[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */
- opus_int *LTPredCodGain_Q7, /* O LTP coding gain */
- const opus_int16 r_lpc[], /* I residual signal after LPC signal + state for first 10 ms */
- const opus_int lag[ MAX_NB_SUBFR ], /* I LTP lags */
- const opus_int32 Wght_Q15[ MAX_NB_SUBFR ], /* I weights */
- const opus_int subfr_length, /* I subframe length */
- const opus_int nb_subfr, /* I number of subframes */
- const opus_int mem_offset, /* I number of samples in LTP memory */
- opus_int corr_rshifts[ MAX_NB_SUBFR ], /* O right shifts applied to correlations */
- int arch /* I Run-time architecture */
-);
-
-void silk_LTP_analysis_filter_FIX(
- opus_int16 *LTP_res, /* O LTP residual signal of length MAX_NB_SUBFR * ( pre_length + subfr_length ) */
- const opus_int16 *x, /* I Pointer to input signal with at least max( pitchL ) preceding samples */
- const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ],/* I LTP_ORDER LTP coefficients for each MAX_NB_SUBFR subframe */
- const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag, one for each subframe */
- const opus_int32 invGains_Q16[ MAX_NB_SUBFR ], /* I Inverse quantization gains, one for each subframe */
- const opus_int subfr_length, /* I Length of each subframe */
- const opus_int nb_subfr, /* I Number of subframes */
- const opus_int pre_length /* I Length of the preceding samples starting at &x[0] for each subframe */
-);
-
-/* Calculates residual energies of input subframes where all subframes have LPC_order */
-/* of preceding samples */
-void silk_residual_energy_FIX(
- opus_int32 nrgs[ MAX_NB_SUBFR ], /* O Residual energy per subframe */
- opus_int nrgsQ[ MAX_NB_SUBFR ], /* O Q value per subframe */
- const opus_int16 x[], /* I Input signal */
- opus_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ], /* I AR coefs for each frame half */
- const opus_int32 gains[ MAX_NB_SUBFR ], /* I Quantization gains */
- const opus_int subfr_length, /* I Subframe length */
- const opus_int nb_subfr, /* I Number of subframes */
- const opus_int LPC_order, /* I LPC order */
- int arch /* I Run-time architecture */
-);
-
-/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */
-opus_int32 silk_residual_energy16_covar_FIX(
- const opus_int16 *c, /* I Prediction vector */
- const opus_int32 *wXX, /* I Correlation matrix */
- const opus_int32 *wXx, /* I Correlation vector */
- opus_int32 wxx, /* I Signal energy */
- opus_int D, /* I Dimension */
- opus_int cQ /* I Q value for c vector 0 - 15 */
-);
-
-/* Processing of gains */
-void silk_process_gains_FIX(
- silk_encoder_state_FIX *psEnc, /* I/O Encoder state */
- silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */
- opus_int condCoding /* I The type of conditional coding to use */
-);
-
-/******************/
-/* Linear Algebra */
-/******************/
-/* Calculates correlation matrix X'*X */
-void silk_corrMatrix_FIX(
- const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
- const opus_int L, /* I Length of vectors */
- const opus_int order, /* I Max lag for correlation */
- const opus_int head_room, /* I Desired headroom */
- opus_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ] */
- opus_int *rshifts, /* I/O Right shifts of correlations */
- int arch /* I Run-time architecture */
-);
-
-/* Calculates correlation vector X'*t */
-void silk_corrVector_FIX(
- const opus_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */
- const opus_int16 *t, /* I Target vector [L] */
- const opus_int L, /* I Length of vectors */
- const opus_int order, /* I Max lag for correlation */
- opus_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */
- const opus_int rshifts, /* I Right shifts of correlations */
- int arch /* I Run-time architecture */
-);
-
-/* Add noise to matrix diagonal */
-void silk_regularize_correlations_FIX(
- opus_int32 *XX, /* I/O Correlation matrices */
- opus_int32 *xx, /* I/O Correlation values */
- opus_int32 noise, /* I Noise to add */
- opus_int D /* I Dimension of XX */
-);
-
-/* Solves Ax = b, assuming A is symmetric */
-void silk_solve_LDL_FIX(
- opus_int32 *A, /* I Pointer to symetric square matrix A */
- opus_int M, /* I Size of matrix */
- const opus_int32 *b, /* I Pointer to b vector */
- opus_int32 *x_Q16 /* O Pointer to x solution vector */
-);
-
-#ifndef FORCE_CPP_BUILD
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* FORCE_CPP_BUILD */
-#endif /* SILK_MAIN_FIX_H */
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