main.c

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/*
 * Main program control
 *
 * This program is free software; you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation version 2.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License (LICENSE) for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * 
 */

#include "standard.h"
#include "config.h"

_session session;
int debug;
int Quit_Mux;

extern char *mux_version;
extern char *build_date;
extern int  mux_build;

/*
 * basic stuff:
 *  
 */
static void program_info(void)
{
  printf("\n");
  printf("H.223 Multiplex Simulator Version %s\n",mux_version);
  printf("Copyright (C) 1997 UCLA and Samsung Electronics Company\n");
  printf("This simulator comes with ABSOLUTELY NO WARRANTY, for details see\n");
  printf("the GNU Public license included with the distribution (LICENSE)\n");
  printf("\n");
  printf("build %d %s\n", mux_build, build_date);
  printf("\n");
}


static void main_loop(void)
{
  int *jblock;
  int j;

  Quit_Mux = 0;
  while (!Quit_Mux) { 
    printf("%s Main Loop\n", print_time());
    interface();

    code_video(session.local.Video);
    code_video(session.remote.Video);  
      
    code_audio(session.local.Audio);
    code_audio(session.remote.Audio);  
    
    multiplex(session.local.Mux, 3);   /* num channels hard coded to 3 */
    multiplex(session.remote.Mux, 3);  /* num channels hard coded to 3 */
      
    demultiplex(session.local.Demux);
    demultiplex(session.remote.Demux);
      
    decode_audio(session.local.Audio);
    decode_audio(session.remote.Audio);
     
    decode_video(session.local.Video);
    decode_video(session.remote.Video);
     
    increment_clock();
  }
}

static void cleanup(void)
{

  /*
   * Close received audio files. 
   */
  close_audio_codec(session.local.Audio);
  close_audio_codec(session.remote.Audio);

  /*
   * Close video codecs. 
   */
  close_video_codec(session.local.Video);
  close_video_codec(session.remote.Video);

  /*
   * Close muxes.
   */

  close_mux(session.local.Mux);
  close_mux(session.remote.Mux);

  /*
   * Close demuxes.
   */

  close_demux(session.local.Demux);
  close_demux(session.remote.Demux);

  /* 
   * Close channels
   */

  close_channel(session.local.Channel);
  close_channel(session.remote.Channel);

}


void sig_int()
{
  fprintf(stderr, "\n\n%s: Caught SIGINT.  Exiting.\n\n", mux_version);
  exit(1);
}

void sig_quit()
{
  fprintf(stderr, "\n\n%s: Caught SIGQUIT.  Exiting.\n\n", mux_version);
  exit(1);
}


int main(int argc, char *argv[])
{
  if (signal(SIGINT, SIG_IGN) != SIG_IGN)
    signal(SIGINT, sig_int);
  if (signal(SIGQUIT, SIG_IGN) != SIG_IGN)
    signal(SIGQUIT, sig_quit);

  program_info();
  
  set_config(argc, argv);
  
  main_loop();
  
  cleanup();

  exit(0);
}

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