inter2.c

mgcp协议源代码。支持多种编码：g711

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <asm/errno.h>
#include "ixjuser.h"

void closeall(void);
int ixj1, ixj2;

int main(int argc, char *argv[])
{
  char pname1[80], pname2[80], buff1[480], buff2[480];
  unsigned long cnt, write1, write2;
  int size, codec, len, depth;

  sprintf(pname1, "/dev/ixj%s", argv[1]);
  sprintf(pname2, "/dev/ixj%s", argv[2]);

  ixj1 = open(pname1, O_RDWR);
  ixj2 = open(pname2, O_RDWR);

  atexit(closeall);

  if(!ioctl(ixj1, IXJCTL_RING))
  {
    exit(0);
  }

  if(!ioctl(ixj2, IXJCTL_RING))
  {
    exit(0);
  }
  codec = atoi(argv[3]);
  switch(codec)
  {
    case G723_63:
      len = 24;
      break;
    case G723_53:
      len = 20;
      break;
    case TS85:
      len = 32;
      break;
    case TS48:
      len = 18;
      break;
    case TS41:
      len = 16;
      break;
    case G728:
      len = 96;
      break;
    case G729:
      len = 36;
      break;
    case ULAW:
      len = 240;
      break;
    case ALAW:
      len = 240;
      break;
    case LINEAR16:
      len = 480;
      break;
    case LINEAR8:
      len = 240;
      break;
    case WSS:
      len = 240;
      break;
  }
  cnt = write1 = write2 = 0;

  if(argc >= 5)
  {
    depth = atoi(argv[4]);
    ioctl(ixj1, IXJCTL_PLAY_DEPTH, depth);
    ioctl(ixj1, IXJCTL_REC_DEPTH, depth);
    ioctl(ixj2, IXJCTL_PLAY_DEPTH, depth);
    ioctl(ixj2, IXJCTL_REC_DEPTH, depth);
  }

  ioctl(ixj1, IXJCTL_PLAY_CODEC, codec);
  ioctl(ixj1, IXJCTL_REC_CODEC, codec);
  ioctl(ixj2, IXJCTL_PLAY_CODEC, codec);
  ioctl(ixj2, IXJCTL_REC_CODEC, codec);
  ioctl(ixj1, IXJCTL_PLAY_START);
  ioctl(ixj2, IXJCTL_REC_START);
  ioctl(ixj2, IXJCTL_PLAY_START);
  ioctl(ixj1, IXJCTL_REC_START);
//  for(cnt=0;cnt < 655000;cnt++)
  while(ioctl(ixj1, IXJCTL_HOOKSTATE) && ioctl(ixj2, IXJCTL_HOOKSTATE))
  {
    if(write1 == 500)
    {
      ioctl(ixj1, IXJCTL_AEC_START);
      ioctl(ixj2, IXJCTL_AEC_START);
      printf("AEC On.\n");
    }
    size = read(ixj1, buff1, len);
    if(size > 0)
    {
      write(ixj2, buff1, len);
      write1++;
    }
    size = read(ixj2, buff2, len);
    if(size > 0)
    {
      write(ixj1, buff2, len); 
      write2++;
    }
  }
printf("Write1 = %ld, Write2 = %ld\n",write1,write2);
getchar();
}

void closeall(void)
{
  ioctl(ixj1, IXJCTL_REC_STOP);
  ioctl(ixj1, IXJCTL_PLAY_STOP);
  ioctl(ixj2, IXJCTL_REC_STOP);
  ioctl(ixj2, IXJCTL_PLAY_STOP);
  ioctl(ixj1, IXJCTL_AEC_STOP);
  ioctl(ixj2, IXJCTL_AEC_STOP);
  close(ixj1);
  close(ixj2);
}