void
ptt (int mode)
{
if (mode == 1)
{
/* mic is muted so unmute and mute speaker */
iaxc_input_level_set (level_in);
if (!check_special_frq (selected_frequency))
{
iaxc_output_level_set (0.0);
std::cout << "[SPEAK] unmute mic, mute speaker" << std::endl;
}
else
{
std::cout << "[SPEAK] unmute mic" << std::endl;
}
}
else
{
/* mic is unmuted so mute and unmute speaker */
iaxc_input_level_set (0.0);
if (!check_special_frq (selected_frequency))
{
iaxc_output_level_set (level_out);
std::cout << "[LISTEN] mute mic, unmute speaker" << std::endl;
}
else
{
std::cout << "[LISTEN] mute mic" << std::endl;
}
}
}
int iaxc_input_postprocess(void *audio, int len, int rate)
{
double volume;
static double lowest_volume = 1;
int silent=0;
if(!st || (speex_state_size != len) || (speex_state_rate != rate)) {
if(st) speex_preprocess_state_destroy(st);
st = speex_preprocess_state_init(len,rate);
speex_state_size = len;
speex_state_rate = rate;
iaxc_set_speex_filters();
}
calculate_level(audio, len, &input_level);
/* only preprocess if we're interested in VAD, AGC, or DENOISE */
if((iaxc_filters & (IAXC_FILTER_DENOISE | IAXC_FILTER_AGC)) || iaxc_silence_threshold > 0)
silent = !speex_preprocess(st, audio, NULL);
/* Analog AGC: Bring speex AGC gain out to mixer, with lots of hysteresis */
/* use a higher continuation threshold for AAGC than for VAD itself */
if(!silent &&
(iaxc_silence_threshold != 0) &&
(iaxc_filters & IAXC_FILTER_AGC) &&
(iaxc_filters & IAXC_FILTER_AAGC) &&
(st->speech_prob > .20)
) {
static int i;
double level;
i++;
if((i&0x3f) == 0) {
float loudness = st->loudness2;
if((loudness > 8000) || (loudness < 4000)) {
level = iaxc_input_level_get();
/* fprintf(stderr, "loudness = %f, level = %f\n", loudness, level); */
/* lower quickly if we're really too hot */
if((loudness > 16000) && (level > 0.5)) {
/* fprintf(stderr, "lowering quickly level\n"); */
iaxc_input_level_set(level - 0.2);
}
/* lower less quickly if we're a bit too hot */
else if((loudness > 8000) && (level >= 0.15)) {
/* fprintf(stderr, "lowering slowly level\n"); */
iaxc_input_level_set(level - 0.1);
}
/* raise slowly if we're cold */
else if((loudness < 4000) && (level <= 0.9)) {
/* fprintf(stderr, "raising level\n"); */
iaxc_input_level_set(level + 0.1);
}
}
}
}
/* this is ugly. Basically just don't get volume level if speex thought
* we were silent. just set it to 0 in that case */
if(iaxc_silence_threshold > 0 && silent)
input_level = 0;
do_level_callback();
volume = vol_to_db(input_level);
if(volume < lowest_volume) lowest_volume = volume;
if(iaxc_silence_threshold > 0)
return silent;
else
return volume < iaxc_silence_threshold;
}
static int input_postprocess(void *audio, int len, int rate)
{
static float lowest_volume = 1.0f;
float volume;
int silent = 0;
if ( !st || speex_state_size != len || speex_state_rate != rate )
{
if (st)
speex_preprocess_state_destroy(st);
st = speex_preprocess_state_init(len,rate);
speex_state_size = len;
speex_state_rate = rate;
set_speex_filters();
}
calculate_level((short *)audio, len, &input_level);
/* only preprocess if we're interested in VAD, AGC, or DENOISE */
if ( (iaxci_filters & (IAXC_FILTER_DENOISE | IAXC_FILTER_AGC)) ||
iaxci_silence_threshold > 0.0f )
silent = !speex_preprocess(st, (spx_int16_t *)audio, NULL);
/* Analog AGC: Bring speex AGC gain out to mixer, with lots of hysteresis */
/* use a higher continuation threshold for AAGC than for VAD itself */
if ( !silent &&
iaxci_silence_threshold != 0.0f &&
(iaxci_filters & IAXC_FILTER_AGC) &&
(iaxci_filters & IAXC_FILTER_AAGC)
)
{
static int i = 0;
i++;
if ( (i & 0x3f) == 0 )
{
float loudness;
#ifdef SPEEX_PREPROCESS_GET_AGC_LOUDNESS
speex_preprocess_ctl(st, SPEEX_PREPROCESS_GET_AGC_LOUDNESS, &loudness);
#else
loudness = st->loudness2;
#endif
if ( loudness > 8000.0f || loudness < 4000.0f )
{
const float level = iaxc_input_level_get();
if ( loudness > 16000.0f && level > 0.5f )
{
/* lower quickly if we're really too hot */
iaxc_input_level_set(level - 0.2f);
}
else if ( loudness > 8000.0f && level >= 0.15f )
{
/* lower less quickly if we're a bit too hot */
iaxc_input_level_set(level - 0.1f);
}
else if ( loudness < 4000.0f && level <= 0.9f )
{
/* raise slowly if we're cold */
iaxc_input_level_set(level + 0.1f);
}
}
}
}
/* This is ugly. Basically just don't get volume level if speex thought
* we were silent. Just set it to 0 in that case */
if ( iaxci_silence_threshold > 0.0f && silent )
input_level = 0.0f;
do_level_callback();
volume = vol_to_db(input_level);
if ( volume < lowest_volume )
lowest_volume = volume;
if ( iaxci_silence_threshold > 0.0f )
return silent;
else
return volume < iaxci_silence_threshold;
}
int
main (int argc, char *argv[])
{
int numbytes;
static char buf[MAXBUFLEN];
//int c;
//int ret = 0;
prog = strdup( base_name(argv[0]) );
/* program header */
std::cout << prog << " - a communication radio based on VoIP with IAX/Asterisk" << std::endl;
std::cout << "Original (c) 2007-2011 by H. Wirtz <*****@*****.**>" << std::endl;
std::cout << "OSX and Windows ports 2012 by Yves Sablonier and Geoff R. McLane, respectively." << std::endl;
std::cout << "Version " << FGCOM_VERSION << " build " << SVN_REV << " date " << __DATE__ << ", at " << __TIME__ << std::endl;
std::cout << "Using iaxclient library Version " << iaxc_version (tmp) << std::endl;
std::cout << std::endl;
/* init values */
voipserver = DEFAULT_VOIP_SERVER;
fgserver = DEFAULT_FG_SERVER;
port = DEFAULT_FG_PORT;
username = DEFAULT_USER;
password = DEFAULT_PASSWORD;
codec_option = DEFAULT_CODEC;
mode = 0; /* 0 = ATC mode, 1 = FG mode */
positions_file = (char *) DEFAULT_POSITIONS_FILE;
frequency_file = (char *) SPECIAL_FREQUENCIES_FILE;
#ifndef _WIN32
/* catch signals */
signal (SIGINT, quit);
signal (SIGQUIT, quit);
signal (SIGTERM, quit);
#endif
/* setup iax */
#ifdef HAVE_IAX12
if (iaxc_initialize (DEFAULT_MAX_CALLS))
#else
if (iaxc_initialize (DEFAULT_IAX_AUDIO, DEFAULT_MAX_CALLS))
#endif
fatal_error ("cannot initialize iaxclient!\nHINT: Have you checked the mic and speakers?");
initialized = 1;
// option parser
fgcomInitOptions (fgcomOptionArray, argc, argv);
// codec
if (codec_option)
{
switch (codec_option)
{
case 'u':
codec = IAXC_FORMAT_ULAW;
break;
case 'a':
codec = IAXC_FORMAT_ALAW;
break;
case 'g':
codec = IAXC_FORMAT_GSM;
break;
case '7':
codec = IAXC_FORMAT_G726;
break;
case 's':
codec = IAXC_FORMAT_SPEEX;
break;
}
}
// airport
if (airport_option)
{
strtoupper (airport_option, airport, sizeof (airport));
}
// input level
if (level_in > 1.0)
{
level_in = 1.0;
}
if (level_in < 0.0)
{
level_in = 0.0;
}
// output level
if (level_out > 1.0)
{
level_out = 1.0;
}
if (level_out < 0.0)
{
level_out = 0.0;
}
// microphone boost
if (mic_boost)
{
iaxc_mic_boost_set (1);
}
if (list_audio)
{
std::cout << "Input audio devices:" << std::endl;
std::cout << report_devices (IAXC_AD_INPUT) << std::endl;
std::cout << "Output audio devices:" << std::endl;
std::cout << report_devices (IAXC_AD_OUTPUT) << std::endl;
iaxc_shutdown ();
exit (1);
}
if (audio_in)
{
set_device (audio_in, 0);
}
if (audio_out)
{
set_device (audio_out, 1);
}
//#ifdef DEBUG
/* Print any remaining command line arguments (not options). */
//if (optind < argc) {
// printf ("non-option ARGV-elements: ");
// while (optind < argc)
// printf ("%s ", argv[optind++]);
// putchar ('\n');
//}
//#endif
/* checking consistency of arguments */
if (frequency > 0.0 && frequency < 1000.0)
{
if (strlen (airport) == 0 || strlen (airport) > 4)
{
strcpy (airport, "ZZZZ");
}
/* airport and frequency are given => ATC mode */
mode = 0;
}
else
{
/* no airport => FG mode */
mode = 1;
}
/* Read special frequencies file (if exists).
* If no file $(INSTALL_DIR)/special_frequencies.txt exists, then default frequencies
* are used and are hard coded.
*/
if (fix_input_files()) { /* adjust default input per OS */
fatal_error ("cannot adjust default input files per OS!\nHINT: Maybe recompile with larger buffer.");
}
if((special_frequencies = read_special_frequencies(frequency_file)) == 0) {
std::cout << "Failed to load file [" << frequency_file << "]!\nUsing internal defaults." << std::endl;
special_frequencies = special_frq;
} else {
std::cout << "Loaded file [" << frequency_file << "]." << std::endl;
}
/* read airport frequencies and positions */
airportlist = read_airports (positions_file); /* never returns if fail! */
/* preconfigure iax */
std::cout << "Initializing IAX client as " << username << ":" <<
"xxxxxxxxxxx@" << voipserver << std::endl;
iaxc_set_callerid (const_cast < char *>(username),
const_cast < char *>("0125252525122750"));
iaxc_set_formats (codec,
IAXC_FORMAT_ULAW | IAXC_FORMAT_GSM | IAXC_FORMAT_SPEEX);
iaxc_set_event_callback (iaxc_callback);
iaxc_start_processing_thread ();
if (username && password && voipserver)
{
reg_id =
iaxc_register (const_cast < char *>(username),
const_cast < char *>(password),
const_cast < char *>(voipserver));
#ifdef DEBUG
std::cout << "DEBUG: Registered as '" << username << "' at '" << voipserver <<
"'." << std::endl;
#endif
}
else
{
std::cout << "Failed iaxc_register!\nHINT: Check user name, pwd and ip of server." << std::endl;
exitcode = 130;
quit (0);
}
iaxc_millisleep (DEFAULT_MILLISLEEP);
/* main loop */
#ifdef DEBUG
std::cout << "Entering main loop in mode " << mode_map[mode] << "." <<
std::endl;
#endif
if (mode == 1)
{
/* only in FG mode */
netInit ();
netSocket fgsocket;
fgsocket.open (false);
fgsocket.bind (fgserver, port);
/* mute mic, speaker on */
iaxc_input_level_set (0);
iaxc_output_level_set (level_out);
ulClock clock;
clock.update ();
double next_update = clock.getAbsTime () + DEFAULT_ALARM_TIMER;
/* get data from flightgear */
while (1)
{
clock.update ();
double wait = next_update - clock.getAbsTime ();
if (wait > 0.001)
{
netSocket *readsockets[2] = { &fgsocket, 0 };
if (fgsocket.select (readsockets, readsockets + 1,
(int) (wait * 1000)) == 1)
{
netAddress their_addr;
if ((numbytes =
fgsocket.recvfrom (buf, MAXBUFLEN - 1, 0,
&their_addr)) == -1)
{
perror ("recvfrom");
exit (1);
}
buf[numbytes] = '\0';
#ifdef DEBUG
std::
cout << "DEBUG: got packet from " << their_addr.getHost () << ":"
<< their_addr.getPort () << std::endl;
std::cout << "packet is " << numbytes << " bytes long" <<
std::endl;
std::
cout << "packet contains \"" << buf << "\"" << std::endl;
#endif
process_packet (buf);
}
}
else
{
alarm_handler (0);
clock.update ();
next_update = clock.getAbsTime () + DEFAULT_ALARM_TIMER;
}
}
}
else
{
/* only in ATC mode */
struct pos p;
/* mic on, speaker on */
iaxc_input_level_set (level_in);
iaxc_output_level_set (level_out);
/* get geo positions of the airport */
p = posbyicao (airportlist, airport);
icao2number (airport, frequency, tmp);
#ifdef DEBUG
printf ("DEBUG: dialing %s %3.3f MHz: %s\n", airport, frequency, tmp);
#endif
do_iaxc_call (username, password, voipserver, tmp);
/* iaxc_select_call (0); */
while (1)
{
/* sleep endless */
ulSleep (3600);
}
}
/* should never be reached */
exitcode = 999;
quit (0);
}