coder.c

一份不错的经编译调试通过的G729A标准 C语言源代码！

/*
   ITU-T G.729A Speech Coder    ANSI-C Source Code
   Version 1.1    Last modified: September 1996

   Copyright (c) 1996,
   AT&T, France Telecom, NTT, Universite de Sherbrooke
   All rights reserved.
*/

/*-------------------------------------------------------------------*
 * Main program of the ITU-T G.729A  8 kbit/s encoder.               *
 *                                                                   *
 *    Usage : coder speech_file  bitstream_file                      *
 *-------------------------------------------------------------------*/

#include <stdio.h>
#include <stdlib.h>

#include "typedef.h"
#include "basic_op.c"
#include "ld8a.h"
#include "util.c"

#include "pre_proc.c"
#include "cod_ld8a.c"
#include "bits.c"

int main( )
{
  FILE *f_speech;               /* File of speech data                   */
  FILE *f_serial;               /* File of serial bits for transmission  */

  extern  Word16 *new_speech;     /* Pointer to new speech data            */

  Word16 prm[PRM_SIZE];          /* Analysis parameters.                  */
  unsigned char serial[SERIAL_SIZE];    /* Output bitstream buffer               */

  Word16 frame;                  /* frame counter */
  unsigned char inputfile[10],outputfile[10];
  Word16  i;
  unsigned char ch;


  printf("\n");
  printf("***********    ITU G.729A 8 KBIT/S SPEECH CODER    ***********\n");
  printf("\n");
  printf("------------------- Fixed point C simulation -----------------\n");
  printf("\n");
 

/*--------------------------------------------------------------------------*
 * Open speech file and result file (output serial bit stream)              *
 *--------------------------------------------------------------------------*/
   printf("Enter the 16-bit PCM filename:\n");
    scanf("%s",inputfile);
    printf("Enter the pack filename:\n");
	scanf("%s",outputfile);
    if(!(f_speech=fopen(inputfile,"rb")))
	{
		printf("can not open the inputfile\n");
		exit(0);
	}

    if(!(f_serial=fopen(outputfile,"wb")))
	{
		printf("can not open the outputfile\n");
		exit(0);
	}
  
/*--------------------------------------------------------------------------*
 * Initialization of the coder.                                             *
 *--------------------------------------------------------------------------*/

  Init_Pre_Process();
  Init_Coder_ld8a();
  Set_zero(prm, PRM_SIZE);
 
  /* Loop for each "L_FRAME" speech data. */

  frame =0;
 f_speech=fopen(inputfile,"rb");
  for(i=0;i<44;i++)/*wave头文件格式*/
  {ch=fgetc(f_speech);
   fputc(ch,f_serial);
   }
   fseek(f_speech,44L,0);
   fseek(f_serial,44L,0);
while( fread(new_speech, sizeof(Word16), L_FRAME, f_speech) == L_FRAME)
  {
    printf("Frame =%d\r", frame++);
    Pre_Process(new_speech, L_FRAME);
    Coder_ld8a(prm);
    prm2bits_ld8k( prm, serial);
    fwrite(serial, 1, SERIAL_SIZE, f_serial);
  }
  return (0);
}