mirror of https://github.com/oxen-io/session-ios
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
367 lines
8.3 KiB
C
367 lines
8.3 KiB
C
/* Copyright (C) 2002-2006 Jean-Marc Valin
|
|
File: modes.c
|
|
|
|
Describes the different modes of the codec
|
|
|
|
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 the Xiph.org Foundation nor the names of its
|
|
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 FOUNDATION 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.
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "modes.h"
|
|
#include "ltp.h"
|
|
#include "quant_lsp.h"
|
|
#include "cb_search.h"
|
|
#include "sb_celp.h"
|
|
#include "nb_celp.h"
|
|
#include "vbr.h"
|
|
#include "arch.h"
|
|
#include <math.h>
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
|
|
/* Extern declarations for all codebooks we use here */
|
|
extern const signed char gain_cdbk_nb[];
|
|
extern const signed char gain_cdbk_lbr[];
|
|
extern const signed char exc_5_256_table[];
|
|
extern const signed char exc_5_64_table[];
|
|
extern const signed char exc_8_128_table[];
|
|
extern const signed char exc_10_32_table[];
|
|
extern const signed char exc_10_16_table[];
|
|
extern const signed char exc_20_32_table[];
|
|
|
|
|
|
/* Parameters for Long-Term Prediction (LTP)*/
|
|
static const ltp_params ltp_params_nb = {
|
|
gain_cdbk_nb,
|
|
7,
|
|
7
|
|
};
|
|
|
|
/* Parameters for Long-Term Prediction (LTP)*/
|
|
static const ltp_params ltp_params_vlbr = {
|
|
gain_cdbk_lbr,
|
|
5,
|
|
0
|
|
};
|
|
|
|
/* Parameters for Long-Term Prediction (LTP)*/
|
|
static const ltp_params ltp_params_lbr = {
|
|
gain_cdbk_lbr,
|
|
5,
|
|
7
|
|
};
|
|
|
|
/* Parameters for Long-Term Prediction (LTP)*/
|
|
static const ltp_params ltp_params_med = {
|
|
gain_cdbk_lbr,
|
|
5,
|
|
7
|
|
};
|
|
|
|
/* Split-VQ innovation parameters for very low bit-rate narrowband */
|
|
static const split_cb_params split_cb_nb_vlbr = {
|
|
10, /*subvect_size*/
|
|
4, /*nb_subvect*/
|
|
exc_10_16_table, /*shape_cb*/
|
|
4, /*shape_bits*/
|
|
0,
|
|
};
|
|
|
|
/* Split-VQ innovation parameters for very low bit-rate narrowband */
|
|
static const split_cb_params split_cb_nb_ulbr = {
|
|
20, /*subvect_size*/
|
|
2, /*nb_subvect*/
|
|
exc_20_32_table, /*shape_cb*/
|
|
5, /*shape_bits*/
|
|
0,
|
|
};
|
|
|
|
/* Split-VQ innovation parameters for low bit-rate narrowband */
|
|
static const split_cb_params split_cb_nb_lbr = {
|
|
10, /*subvect_size*/
|
|
4, /*nb_subvect*/
|
|
exc_10_32_table, /*shape_cb*/
|
|
5, /*shape_bits*/
|
|
0,
|
|
};
|
|
|
|
|
|
/* Split-VQ innovation parameters narrowband */
|
|
static const split_cb_params split_cb_nb = {
|
|
5, /*subvect_size*/
|
|
8, /*nb_subvect*/
|
|
exc_5_64_table, /*shape_cb*/
|
|
6, /*shape_bits*/
|
|
0,
|
|
};
|
|
|
|
/* Split-VQ innovation parameters narrowband */
|
|
static const split_cb_params split_cb_nb_med = {
|
|
8, /*subvect_size*/
|
|
5, /*nb_subvect*/
|
|
exc_8_128_table, /*shape_cb*/
|
|
7, /*shape_bits*/
|
|
0,
|
|
};
|
|
|
|
/* Split-VQ innovation for low-band wideband */
|
|
static const split_cb_params split_cb_sb = {
|
|
5, /*subvect_size*/
|
|
8, /*nb_subvect*/
|
|
exc_5_256_table, /*shape_cb*/
|
|
8, /*shape_bits*/
|
|
0,
|
|
};
|
|
|
|
|
|
|
|
/* 2150 bps "vocoder-like" mode for comfort noise */
|
|
static const SpeexSubmode nb_submode1 = {
|
|
0,
|
|
1,
|
|
0,
|
|
0,
|
|
/* LSP quantization */
|
|
lsp_quant_lbr,
|
|
lsp_unquant_lbr,
|
|
/* No pitch quantization */
|
|
forced_pitch_quant,
|
|
forced_pitch_unquant,
|
|
NULL,
|
|
/* No innovation quantization (noise only) */
|
|
noise_codebook_quant,
|
|
noise_codebook_unquant,
|
|
NULL,
|
|
-1,
|
|
43
|
|
};
|
|
|
|
/* 3.95 kbps very low bit-rate mode */
|
|
static const SpeexSubmode nb_submode8 = {
|
|
0,
|
|
1,
|
|
0,
|
|
0,
|
|
/*LSP quantization*/
|
|
lsp_quant_lbr,
|
|
lsp_unquant_lbr,
|
|
/*No pitch quantization*/
|
|
forced_pitch_quant,
|
|
forced_pitch_unquant,
|
|
NULL,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_nb_ulbr,
|
|
QCONST16(.5,15),
|
|
79
|
|
};
|
|
|
|
/* 5.95 kbps very low bit-rate mode */
|
|
static const SpeexSubmode nb_submode2 = {
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
/*LSP quantization*/
|
|
lsp_quant_lbr,
|
|
lsp_unquant_lbr,
|
|
/*No pitch quantization*/
|
|
pitch_search_3tap,
|
|
pitch_unquant_3tap,
|
|
<p_params_vlbr,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_nb_vlbr,
|
|
QCONST16(.6,15),
|
|
119
|
|
};
|
|
|
|
/* 8 kbps low bit-rate mode */
|
|
static const SpeexSubmode nb_submode3 = {
|
|
-1,
|
|
0,
|
|
1,
|
|
0,
|
|
/*LSP quantization*/
|
|
lsp_quant_lbr,
|
|
lsp_unquant_lbr,
|
|
/*Pitch quantization*/
|
|
pitch_search_3tap,
|
|
pitch_unquant_3tap,
|
|
<p_params_lbr,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_nb_lbr,
|
|
QCONST16(.55,15),
|
|
160
|
|
};
|
|
|
|
/* 11 kbps medium bit-rate mode */
|
|
static const SpeexSubmode nb_submode4 = {
|
|
-1,
|
|
0,
|
|
1,
|
|
0,
|
|
/*LSP quantization*/
|
|
lsp_quant_lbr,
|
|
lsp_unquant_lbr,
|
|
/*Pitch quantization*/
|
|
pitch_search_3tap,
|
|
pitch_unquant_3tap,
|
|
<p_params_med,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_nb_med,
|
|
QCONST16(.45,15),
|
|
220
|
|
};
|
|
|
|
/* 15 kbps high bit-rate mode */
|
|
static const SpeexSubmode nb_submode5 = {
|
|
-1,
|
|
0,
|
|
3,
|
|
0,
|
|
/*LSP quantization*/
|
|
lsp_quant_nb,
|
|
lsp_unquant_nb,
|
|
/*Pitch quantization*/
|
|
pitch_search_3tap,
|
|
pitch_unquant_3tap,
|
|
<p_params_nb,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_nb,
|
|
QCONST16(.3,15),
|
|
300
|
|
};
|
|
|
|
/* 18.2 high bit-rate mode */
|
|
static const SpeexSubmode nb_submode6 = {
|
|
-1,
|
|
0,
|
|
3,
|
|
0,
|
|
/*LSP quantization*/
|
|
lsp_quant_nb,
|
|
lsp_unquant_nb,
|
|
/*Pitch quantization*/
|
|
pitch_search_3tap,
|
|
pitch_unquant_3tap,
|
|
<p_params_nb,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_sb,
|
|
QCONST16(.2,15),
|
|
364
|
|
};
|
|
|
|
/* 24.6 kbps high bit-rate mode */
|
|
static const SpeexSubmode nb_submode7 = {
|
|
-1,
|
|
0,
|
|
3,
|
|
1,
|
|
/*LSP quantization*/
|
|
lsp_quant_nb,
|
|
lsp_unquant_nb,
|
|
/*Pitch quantization*/
|
|
pitch_search_3tap,
|
|
pitch_unquant_3tap,
|
|
<p_params_nb,
|
|
/*Innovation quantization*/
|
|
split_cb_search_shape_sign,
|
|
split_cb_shape_sign_unquant,
|
|
&split_cb_nb,
|
|
QCONST16(.1,15),
|
|
492
|
|
};
|
|
|
|
|
|
/* Default mode for narrowband */
|
|
static const SpeexNBMode nb_mode = {
|
|
160, /*frameSize*/
|
|
40, /*subframeSize*/
|
|
10, /*lpcSize*/
|
|
17, /*pitchStart*/
|
|
144, /*pitchEnd*/
|
|
#ifdef FIXED_POINT
|
|
29491, 19661, /* gamma1, gamma2 */
|
|
#else
|
|
0.9, 0.6, /* gamma1, gamma2 */
|
|
#endif
|
|
QCONST16(.0002,15), /*lpc_floor*/
|
|
{NULL, &nb_submode1, &nb_submode2, &nb_submode3, &nb_submode4, &nb_submode5, &nb_submode6, &nb_submode7,
|
|
&nb_submode8, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
|
|
5,
|
|
{1, 8, 2, 3, 3, 4, 4, 5, 5, 6, 7}
|
|
};
|
|
|
|
|
|
/* Default mode for narrowband */
|
|
EXPORT const SpeexMode speex_nb_mode = {
|
|
&nb_mode,
|
|
nb_mode_query,
|
|
"narrowband",
|
|
0,
|
|
4,
|
|
&nb_encoder_init,
|
|
&nb_encoder_destroy,
|
|
&nb_encode,
|
|
&nb_decoder_init,
|
|
&nb_decoder_destroy,
|
|
&nb_decode,
|
|
&nb_encoder_ctl,
|
|
&nb_decoder_ctl,
|
|
};
|
|
|
|
|
|
|
|
EXPORT int speex_mode_query(const SpeexMode *mode, int request, void *ptr)
|
|
{
|
|
return mode->query(mode->mode, request, ptr);
|
|
}
|
|
|
|
#ifdef FIXED_DEBUG
|
|
long long spx_mips=0;
|
|
#endif
|
|
|