forked from Mirrors/freeswitch
dced381e66
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3759 d0543943-73ff-0310-b7d9-9358b9ac24b2
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/* Copyright (C) 2002 Jean-Marc Valin & David Rowe */
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/**
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@file cb_search.h
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@brief Overlapped codebook search
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*/
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef CB_SEARCH_H
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#define CB_SEARCH_H
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#include <speex/speex_bits.h>
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#include "misc.h"
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/** Split codebook parameters. */
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typedef struct split_cb_params {
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int subvect_size;
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int nb_subvect;
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const signed char *shape_cb;
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int shape_bits;
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int have_sign;
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} split_cb_params;
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void split_cb_search_shape_sign(
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spx_word16_t target[], /* target vector */
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spx_coef_t ak[], /* LPCs for this subframe */
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spx_coef_t awk1[], /* Weighted LPCs for this subframe */
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spx_coef_t awk2[], /* Weighted LPCs for this subframe */
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const void *par, /* Codebook/search parameters */
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int p, /* number of LPC coeffs */
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int nsf, /* number of samples in subframe */
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spx_sig_t *exc,
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spx_word16_t *r,
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SpeexBits *bits,
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char *stack,
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int complexity,
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int update_target
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);
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void split_cb_shape_sign_unquant(
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spx_sig_t *exc,
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const void *par, /* non-overlapping codebook */
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int nsf, /* number of samples in subframe */
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SpeexBits *bits,
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char *stack,
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spx_int32_t *seed
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);
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void noise_codebook_quant(
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spx_word16_t target[], /* target vector */
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spx_coef_t ak[], /* LPCs for this subframe */
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spx_coef_t awk1[], /* Weighted LPCs for this subframe */
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spx_coef_t awk2[], /* Weighted LPCs for this subframe */
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const void *par, /* Codebook/search parameters */
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int p, /* number of LPC coeffs */
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int nsf, /* number of samples in subframe */
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spx_sig_t *exc,
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spx_word16_t *r,
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SpeexBits *bits,
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char *stack,
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int complexity,
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int update_target
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);
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void noise_codebook_unquant(
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spx_sig_t *exc,
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const void *par, /* non-overlapping codebook */
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int nsf, /* number of samples in subframe */
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SpeexBits *bits,
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char *stack,
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spx_int32_t *seed
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);
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#endif
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