g729ev_fec_tools.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_TOOLS_H__
#define __G729EV_TOOLS_H__

/*-----------------------------------------------------------*
 * Tool library
 * ~~~~~~~~~~~~~~~~~~~                                             
 *-----------------------------------------------------------*/



/* Fixed-point definitions and prototypes */
#include "G729EV_MAIN_defines.h"
#include "G729EV_G729_defines.h"
#include "stl.h"


void      G729EV_Copy32(const Word32 x[], /* i:   input vector   */
                        Word32 y[],       /* o:   output vector  */
                        const Word16 L    /* i:   vector length  */
    );

Word16    G729EV_Emaximum2(     /* o:   return index with energy value in vector  Q0 */
                            const Word16 Qvec,  /* i:   Q of input vector                         Q0 */
                            const Word16 * vec, /* i:   input vector                              Qx */
                            const Word16 lvec,  /* i:   length of input vector                    Q0 */
                            Word32 * ener_max   /* o:   maximum energy value                      Q0 */
    );

Word16    G729EV_Find_max(      /* o:   return index with maximum value in vector  */
                           const Word16 * vec,  /* i:   input vector                               */
                           const Word16 lvec    /* i:   length of input vector                     */
    );
Word32    G729EV_Mean32(        /* o:   mean of the elements of the vector  */
                         const Word32 in[], /* i:   input vector                        */
                         const Word16 L     /* i:   length of input vector              */
    );

/*----------------------------------------------------------------------------------*
 * Function Name : Dot_product()                           
 * Compute scalar product of <x[],y[]> using accumulator.   
 * Performs no normalization, as opposed to Dot_product12()  
 *----------------------------------------------------------------------------------*/
Word32    G729EV_Dot_product(   /* o:   Sum               */
                              const Word16 x[], /* i:   12bits: x vector  */
                              const Word16 y[], /* i:   12bits: y vector  */
                              const Word16 lg   /* i:   vector length     */
    );
void      G729EV_Set_zero32(Word32 x[],     /* i/o: vector to clear     */
                            const Word16 L  /* i:   length of vector    */
    );
void      G729EV_Scale_sig(Word16 x[],       /* i/o: signal to scale                 Qx        */
                           const Word16 lg,  /* i:   size of x[]                     Q0        */
                           const Word16 exp0 /* i:   exponent: x = round(x << exp)   Qx