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 <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "ixjuser.h"

void closeall(void);
void usage(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, frame, frame1, frame2;

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

  ixj1 = open(pname1, O_RDWR);
  if(ixj1 < 0)
  {
    printf("%s open failed %d %s\n" ,pname1, ixj1, strerror(errno));
    exit(-1);
  }
  ixj2 = open(pname2, O_RDWR);
  if(ixj2 < 0)
  {
    printf("%s open failed %d %s\n" ,pname2, ixj2, strerror(errno));
    exit(-1);
  }

  if(argc < 4)
  {
    usage();
    exit(-1);
  }
  if(argc >= 6)
  {
    frame = atoi(argv[5]);
  }
  else
  {
    frame = 30;
  }

  frame1 = ioctl(ixj1, IXJCTL_FRAME, frame);
  frame2 = ioctl(ixj2, IXJCTL_FRAME, frame);

  atexit(closeall);

//  ioctl(ixj1, IXJCTL_HZ, 300);
//  ioctl(ixj1, IXJCTL_RATE, 100);

  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:
      switch(frame)
      {
        case 30:
          len = 240;
          break;
        case 20:
          len = 160;
          break;
        case 10:
          len = 80;
          break;
      }
      break;
    case ALAW:
      switch(frame)
      {
        case 30:
          len = 240;
          break;
        case 20:
          len = 160;
          break;
        case 10:
          len = 80;
          break;
      }
      break;
    case LINEAR16:
      switch(frame)
      {
        case 30:
          len = 480;
          break;
        case 20:
          len = 320;
          break;
        case 10:
          len = 160;
          break;
      }
      break;
    case LINEAR8:
      switch(frame)
      {
        case 30:
          len = 240;
          break;
        case 20:
          len = 160;
          break;
        case 10:
          len = 80;
          break;
      }
      break;
    case WSS:
      switch(frame)
      {
        case 30:
          len = 240;
          break;
        case 20:
          len = 160;
          break;
        case 10:
          len = 80;
          break;
      }
      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);

  printf("Frame1 = %d, Frame2 = %d, len = %d, depth = %d, codec = %d\n",
          frame1, frame2, len, depth, codec);
  fflush(stdout);
  ioctl(ixj1, IXJCTL_AEC_START);
  ioctl(ixj2, IXJCTL_AEC_START);
  printf("AEC On.\n");

  while(ioctl(ixj1, IXJCTL_HOOKSTATE) && ioctl(ixj2, IXJCTL_HOOKSTATE))
  {
    size = read(ixj1, buff1, len);
    if(size > 0)
    {
      write(ixj2, buff1, size);
      write1++;
    }
    size = read(ixj2, buff2, len);
    if(size > 0)
    {
      write(ixj1, buff2, size); 
      write2++;
    }
  }
printf("Write1 = %ld, Write2 = %ld\n",write1,write2);
getchar();
}

void closeall(void)
{
  ioctl(ixj1, IXJCTL_AEC_STOP);
  ioctl(ixj2, IXJCTL_AEC_STOP);
  ioctl(ixj1, IXJCTL_REC_STOP);
  ioctl(ixj1, IXJCTL_PLAY_STOP);
  ioctl(ixj2, IXJCTL_REC_STOP);
  ioctl(ixj2, IXJCTL_PLAY_STOP);
  printf("AEC Off.\n");
  ioctl(ixj1, IXJCTL_DSP_IDLE);
  ioctl(ixj2, IXJCTL_DSP_IDLE);
  close(ixj1);
  close(ixj2);
}
void usage(void)
{
  printf("inter2 card1 card2 codec depth frame\n");
  printf("\tcard1 and card2 - 0 = /dev/ixj0, 1 = /dev/ixj1 etc.\n");
  printf("\tcodec  1 = g.723.1 6.3\n");
  printf("\t       2 = g.723.1 5.3\n");
  printf("\t       3 = TrueSpeech 8.5\n");
  printf("\t       4 = TrueSpeech 4.8\n");
  printf("\t       5 = TrueSpeech 4.1\n");
  printf("\t       6 = g.728\n");
  printf("\t       7 = g.729\n");
  printf("\t       8 = uLaw\n");
  printf("\t       9 = aLaw\n");
  printf("\t      10 = Linear 16 Bit\n");
  printf("\t      11 = Linear 8 Bit\n");
  printf("\t      12 = Windows Sound System\n");
  printf("Optional arguments:\n");
  printf("\tdepth - DSP buffer depth in frames\n");
  printf("\tframe - 10 = 10ms, 20 = 20ms, 30 = 30ms\n");
}