g729ev_tdbwe_vector_quantization.h

最新的ITU-T的宽带语音编解码标准G.729.1,是对原先的G.729的最好的调整.码流输出速率可以进行自适应调整.满足未来通信要求.希望对大家有所帮助.

/* ITU-T G.729EV Optimization/Characterization Candidate                         */
/* Version:       1.0.a                                                          */
/* Revision Date: June 28, 2006                                                  */

/*
   ITU-T G.729EV Optimization/Characterization Candidate    ANSI-C Source Code
   Copyright (c) 2006 
   France Telecom, Matsushita Electric, Mindspeed, Siemens AG, ETRI, VoiceAge Corp.
   All rights reserved
*/

#ifndef __G729EV_TDBWE_VECTOR_QUANTIZATION_H__
#define __G729EV_TDBWE_VECTOR_QUANTIZATION_H__

#include "stl.h"


/* protoype for exported function */

void      G729EV_TDBWE_vector_quantization(Word16 * input,
                                           const Word16 * codebook,
                                           UWord16 * index, const Word16 vector_size, const Word16 codebook_size);


/* tables */

/* TDBWE table for mean time envelope quantization       */
extern const Word16 G729EV_TDBWE_MEAN_TIME_ENV_cb[32];

/* TDBWE tables for time envelope quantization           */
extern const Word16 G729EV_TDBWE_TIME_ENV_cb[1024];

/* TDBWE tables for frequency envelope quantization      */
extern const Word16 G729EV_TDBWE_FREQ_ENV_NUMBER_ENTRIES[3];
extern const Word16 G729EV_TDBWE_FREQ_ENV_BITS[3];
extern const Word16 *G729EV_TDBWE_FREQ_ENV_cb[3];
extern const Word16 G729EV_TDBWE_FREQ_ENV_cb1[128];
extern const Word16 G729EV_TDBWE_FREQ_ENV_cb2[128];
extern const Word16 G729EV_TDBWE_FREQ_ENV_cb3[64];

#endif