dtmfascii.c

mgcp协议源代码。支持多种编码：g711

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

void closeall(void);
void getdata(int);

int ixj1, size1, len, cmd;
unsigned long write1;
char buff1[480];

int main(int argc, char *argv[])
{
  char pname1[80], buff1[480];
  int cnt, oflags1, oflags2;

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

  ixj1 = open(pname1, O_RDWR);

  atexit(closeall);

  signal(SIGIO, &getdata);
  fcntl(ixj1, F_SETOWN, getpid());
  oflags1 = fcntl(ixj1, F_GETFL);
  fcntl(ixj1, F_SETFL, oflags1 | FASYNC);

  getchar();
}

void closeall(void)
{
  ioctl(ixj1, IXJCTL_DSP_IDLE);
  close(ixj1);
}

void getdata(int x)
{
  fd_set  rfds,wfds,efds;
  struct timeval  tv;
  IXJ_EXCEPTION ixje;
  int nmax, size;
  char buf[480];

  signal(SIGIO, &getdata);
//  nmax = (ixj1 > 0 ? ixj1+1 : 1);
  nmax = ixj1+1;

  FD_ZERO(&rfds);
  FD_ZERO(&wfds);
  FD_ZERO(&efds);
  FD_SET(ixj1, &rfds);
  FD_SET(ixj1, &wfds);
  FD_SET(ixj1, &efds);
  tv.tv_sec = 0;
  tv.tv_usec = 300;
  select(nmax,&rfds, &wfds, &efds, &tv);
  if(FD_ISSET(ixj1,&rfds)) 
  {
    
  }
  if(FD_ISSET(ixj1,&wfds)) 
  {
  }
  if(FD_ISSET(ixj1,&efds)) 
  {
    ixje.bytes = ioctl(ixj1, IXJCTL_EXCEPTION);
    if(ixje.bits.dtmf_ready)
    {
      // Deal with DTMF
      ioctl(ixj1, IXJCTL_CPT_STOP);
      printf("DTMF from card 0 = %c\n",ioctl(ixj1, IXJCTL_GET_DTMF_ASCII));
    }
    if(ixje.bits.hookstate)
    {
      if(ioctl(ixj1, IXJCTL_HOOKSTATE))
      {
        ioctl(ixj1, IXJCTL_DIALTONE);
        printf("Off Hook\n");
      }
      else
        printf("On Hook\n");
    }
    fflush(stdout);
  }
}