75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
|
/* Copyright (C) 2002 Jean-Marc Valin */
|
||
|
|
/**
|
||
|
|
@file quant_lsp.h
|
||
|
|
@brief LSP vector quantization
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
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 QUANT_LSP_H
|
||
|
|
#define QUANT_LSP_H
|
||
|
|
|
||
|
|
#include <speex/speex_bits.h>
|
||
|
|
#include "arch.h"
|
||
|
|
|
||
|
|
#define MAX_LSP_SIZE 20
|
||
|
|
|
||
|
|
#define NB_CDBK_SIZE 64
|
||
|
|
#define NB_CDBK_SIZE_LOW1 64
|
||
|
|
#define NB_CDBK_SIZE_LOW2 64
|
||
|
|
#define NB_CDBK_SIZE_HIGH1 64
|
||
|
|
#define NB_CDBK_SIZE_HIGH2 64
|
||
|
|
|
||
|
|
/*Narrowband codebooks*/
|
||
|
|
extern const signed char cdbk_nb[];
|
||
|
|
extern const signed char cdbk_nb_low1[];
|
||
|
|
extern const signed char cdbk_nb_low2[];
|
||
|
|
extern const signed char cdbk_nb_high1[];
|
||
|
|
extern const signed char cdbk_nb_high2[];
|
||
|
|
|
||
|
|
/* Quantizes narrowband LSPs with 30 bits */
|
||
|
|
void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
|
||
|
|
|
||
|
|
/* Decodes quantized narrowband LSPs */
|
||
|
|
void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits);
|
||
|
|
|
||
|
|
/* Quantizes low bit-rate narrowband LSPs with 18 bits */
|
||
|
|
void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
|
||
|
|
|
||
|
|
/* Decodes quantized low bit-rate narrowband LSPs */
|
||
|
|
void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits);
|
||
|
|
|
||
|
|
/* Quantizes high-band LSPs with 12 bits */
|
||
|
|
void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
|
||
|
|
|
||
|
|
/* Decodes high-band LSPs */
|
||
|
|
void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits);
|
||
|
|
|
||
|
|
#endif
|