g729ev_g729b_dtx.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_G729_DTX_H__
#define __G729EV_G729_DTX_H__

#include "stl.h"
#include "G729EV_G729_DecStat.h"

/* SID gain Quantization */
void      Qua_Sidgain(Word16 * ener,    /* (i)   array of energies                   */
                      Word16 * sh_ener, /* (i)   corresponding scaling factors       */
                      Word16 nb_ener,   /* (i)   number of energies or               */
                      Word16 * enerq,   /* (o)   decoded energies in dB              */
                      Word16 * idx      /* (o)   SID gain quantization index         */
    );

/* CNG excitation generation */
void      Calc_exc_rand(G729EV_G729_DECSTAT * pDecStat, Word16 cur_gain,  /* (i)   :   target sample gain                 */
                        Word16 * exc,   /* (i/o) :   excitation array                   */
                        Word16 * seed,  /* (i)   :   current Vad decision               */
                        Flag flag_cod   /* (i)   :   encoder/decoder flag               */
    );

#endif