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1/***********************************************************************
2Copyright (c) 2006-2011, Skype Limited. All rights reserved.
3Redistribution and use in source and binary forms, with or without
4modification, are permitted provided that the following conditions
5are met:
6- Redistributions of source code must retain the above copyright notice,
7this list of conditions and the following disclaimer.
8- Redistributions in binary form must reproduce the above copyright
9notice, this list of conditions and the following disclaimer in the
10documentation and/or other materials provided with the distribution.
11- Neither the name of Internet Society, IETF or IETF Trust, nor the
12names of specific contributors, may be used to endorse or promote
13products derived from this software without specific prior written
14permission.
15THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25POSSIBILITY 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
46extern "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 */
63void silk_HP_variable_cutoff(
64 silk_encoder_state_Fxx state_Fxx[] /* I/O Encoder states */
65);
66
67/* Encoder main function */
68void 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 */
74opus_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 */
84opus_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 */
90opus_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 */
102void 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 */
111void 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 */
126void 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 */
136void 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 */
145void 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 */
154void 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 */
162void 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
172void 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 */
185void 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 */
198opus_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 */
208void 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 */
218void 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 */
229void 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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-20 10:10:27 +0000