#include <sys/types.h>#include <sys/time.h>#include <stdio.h>#include <stdlib.h>#include <strings.h>#include <signal.h>#include <sys/ioctl.h>#include <unistd.h>#include <fcntl.h>#include <asm/errno.h>#include "ixjuser.h"void closeall(void);void getdata(int);int ixj1, ixj2, size1, size2, len;unsigned long write1, write2;char buff1[480], buff2[480];int main(int argc, char *argv[]){  char pname1[80], pname2[80];  int codec, oflags1, oflags2;  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;  }  signal(SIGIO, &getdata);  fcntl(ixj1, F_SETOWN, getpid());  fcntl(ixj2, F_SETOWN, getpid());  oflags1 = fcntl(ixj1, F_GETFL);  fcntl(ixj1, F_SETFL, oflags1 | FASYNC);  oflags2 = fcntl(ixj2, F_GETFL);  fcntl(ixj2, F_SETFL, oflags2 | FASYNC);  write1 = write2 = 0;  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);    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");      write1++;    }  }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);}void getdata(int x){  fd_set  rfds,wfds,efds;  struct timeval  tv;  int nmax, size;  char buf[480];  signal(SIGIO, &getdata);  nmax = (ixj1 > ixj2 ? ixj1+1 : ixj2+1);  FD_ZERO(&rfds);  FD_ZERO(&wfds);  FD_ZERO(&efds);  FD_SET(ixj1, &rfds);  FD_SET(ixj2, &rfds);  FD_SET(ixj1, &wfds);  FD_SET(ixj2, &wfds);  FD_SET(ixj1, &efds);  FD_SET(ixj2, &efds);  tv.tv_sec = 0;  tv.tv_usec = 300;  select(nmax,&rfds, &wfds, &efds, &tv);  if(FD_ISSET(ixj1,&rfds))   {    size1 = read(ixj1, buff1, len);  }  if(FD_ISSET(ixj1,&wfds))   {    if(size2 > 0)    {      write(ixj1, buff2, len);       write1++;      size2 = 0;    }  }//  if(FD_ISSET(ixj1,&efds))   {    // Deal with DTMF    printf("DTMF from card 0 = %d",ioctl(ixj1, IXJCTL_GET_DTMF));  }  if(FD_ISSET(ixj2,&rfds))   {    size2 = read(ixj2, buff2, len);  }  if(FD_ISSET(ixj2,&wfds))   {    if(size1 > 0)    {      write(ixj2, buff1, len);      write2++;      size1 = 0;    }  }  if(FD_ISSET(ixj2,&efds))   {    // Deal with DTMF    printf("DTMF from card 1 = %d",ioctl(ixj2, IXJCTL_GET_DTMF));  }}