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.
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/* Copyright (C) 2002 Jean-Marc Valin & David Rowe */
|
|
/**
|
|
@file cb_search.h
|
|
@brief Overlapped codebook search
|
|
*/
|
|
/*
|
|
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.
|
|
*/
|
|
|
|
#ifndef CB_SEARCH_H
|
|
#define CB_SEARCH_H
|
|
|
|
#include <speex/speex_bits.h>
|
|
#include "arch.h"
|
|
|
|
/** Split codebook parameters. */
|
|
typedef struct split_cb_params {
|
|
int subvect_size;
|
|
int nb_subvect;
|
|
const signed char *shape_cb;
|
|
int shape_bits;
|
|
int have_sign;
|
|
} split_cb_params;
|
|
|
|
|
|
void split_cb_search_shape_sign(
|
|
spx_word16_t target[], /* target vector */
|
|
spx_coef_t ak[], /* LPCs for this subframe */
|
|
spx_coef_t awk1[], /* Weighted LPCs for this subframe */
|
|
spx_coef_t awk2[], /* Weighted LPCs for this subframe */
|
|
const void *par, /* Codebook/search parameters */
|
|
int p, /* number of LPC coeffs */
|
|
int nsf, /* number of samples in subframe */
|
|
spx_sig_t *exc,
|
|
spx_word16_t *r,
|
|
SpeexBits *bits,
|
|
char *stack,
|
|
int complexity,
|
|
int update_target
|
|
);
|
|
|
|
void split_cb_shape_sign_unquant(
|
|
spx_sig_t *exc,
|
|
const void *par, /* non-overlapping codebook */
|
|
int nsf, /* number of samples in subframe */
|
|
SpeexBits *bits,
|
|
char *stack,
|
|
spx_int32_t *seed
|
|
);
|
|
|
|
|
|
void noise_codebook_quant(
|
|
spx_word16_t target[], /* target vector */
|
|
spx_coef_t ak[], /* LPCs for this subframe */
|
|
spx_coef_t awk1[], /* Weighted LPCs for this subframe */
|
|
spx_coef_t awk2[], /* Weighted LPCs for this subframe */
|
|
const void *par, /* Codebook/search parameters */
|
|
int p, /* number of LPC coeffs */
|
|
int nsf, /* number of samples in subframe */
|
|
spx_sig_t *exc,
|
|
spx_word16_t *r,
|
|
SpeexBits *bits,
|
|
char *stack,
|
|
int complexity,
|
|
int update_target
|
|
);
|
|
|
|
|
|
void noise_codebook_unquant(
|
|
spx_sig_t *exc,
|
|
const void *par, /* non-overlapping codebook */
|
|
int nsf, /* number of samples in subframe */
|
|
SpeexBits *bits,
|
|
char *stack,
|
|
spx_int32_t *seed
|
|
);
|
|
|
|
#endif
|