static void fax_set_rx_type(void *user_data, int type, int bit_rate, int short_train, int use_hdlc)
{
fax_state_t *s;
put_bit_func_t put_bit_func;
void *put_bit_user_data;
fax_modems_state_t *t;
s = (fax_state_t *) user_data;
t = &s->modems;
span_log(&s->logging, SPAN_LOG_FLOW, "Set rx type %d\n", type);
if (t->current_rx_type == type)
return;
/*endif*/
t->current_rx_type = type;
t->rx_bit_rate = bit_rate;
if (use_hdlc)
{
put_bit_func = (put_bit_func_t) hdlc_rx_put_bit;
put_bit_user_data = (void *) &t->hdlc_rx;
hdlc_rx_init(&t->hdlc_rx, false, true, HDLC_FRAMING_OK_THRESHOLD, t30_hdlc_accept, &s->t30);
}
else
{
put_bit_func = t30_non_ecm_put_bit;
put_bit_user_data = (void *) &s->t30;
}
/*endif*/
switch (type)
{
case T30_MODEM_V21:
fsk_rx_init(&t->v21_rx, &preset_fsk_specs[FSK_V21CH2], FSK_FRAME_MODE_SYNC, (put_bit_func_t) hdlc_rx_put_bit, put_bit_user_data);
fsk_rx_signal_cutoff(&t->v21_rx, -45.5f);
set_rx_handler(s, (span_rx_handler_t *) &fsk_rx, (span_rx_fillin_handler_t *) &fsk_rx_fillin, &t->v21_rx);
break;
case T30_MODEM_V17:
v17_rx_restart(&t->fast_modems.v17_rx, bit_rate, short_train);
v17_rx_set_put_bit(&t->fast_modems.v17_rx, put_bit_func, put_bit_user_data);
set_rx_handler(s, &v17_v21_rx, &v17_v21_rx_fillin, s);
break;
case T30_MODEM_V27TER:
v27ter_rx_restart(&t->fast_modems.v27ter_rx, bit_rate, false);
v27ter_rx_set_put_bit(&t->fast_modems.v27ter_rx, put_bit_func, put_bit_user_data);
set_rx_handler(s, &v27ter_v21_rx, &v27ter_v21_rx_fillin, s);
break;
case T30_MODEM_V29:
v29_rx_restart(&t->fast_modems.v29_rx, bit_rate, false);
v29_rx_set_put_bit(&t->fast_modems.v29_rx, put_bit_func, put_bit_user_data);
set_rx_handler(s, &v29_v21_rx, &v29_v21_rx_fillin, s);
break;
case T30_MODEM_DONE:
span_log(&s->logging, SPAN_LOG_FLOW, "FAX exchange complete\n");
default:
set_rx_handler(s, (span_rx_handler_t *) &span_dummy_rx, (span_rx_fillin_handler_t *) &span_dummy_rx_fillin, s);
break;
}
/*endswitch*/
}
SPAN_DECLARE(void) fax_modems_start_fast_modem(fax_modems_state_t *s, int which, int bit_rate, int short_train, int hdlc_mode)
{
put_bit_func_t put_bit;
get_bit_func_t get_bit;
void *get_bit_user_data;
void *put_bit_user_data;
s->bit_rate = bit_rate;
if (hdlc_mode)
{
get_bit = (get_bit_func_t) hdlc_tx_get_bit;
get_bit_user_data = (void *) &s->hdlc_tx;
put_bit = (put_bit_func_t) hdlc_rx_put_bit;
put_bit_user_data = (void *) &s->hdlc_rx;
}
else
{
get_bit = s->get_bit;
get_bit_user_data = s->get_bit_user_data;
put_bit = s->put_bit;
put_bit_user_data = s->put_bit_user_data;
}
/*endif*/
/* If we change modems we need to do a complete reinitialisation of the modem, because
the modems use overlapping memory. */
if (s->fast_modem != which)
{
s->current_rx_type = which;
s->short_train = false;
s->fast_modem = which;
if (hdlc_mode)
s->rx_frame_received = false;
switch (s->fast_modem)
{
case FAX_MODEM_V27TER_RX:
v27ter_rx_init(&s->fast_modems.v27ter_rx, s->bit_rate, put_bit, put_bit_user_data);
v27ter_rx_set_modem_status_handler(&s->fast_modems.v27ter_rx, v27ter_rx_status_handler, s);
fax_modems_set_rx_handler(s, (span_rx_handler_t) &fax_modems_v27ter_v21_rx, s, (span_rx_fillin_handler_t) &fax_modems_v27ter_v21_rx_fillin, s);
break;
case FAX_MODEM_V29_RX:
v29_rx_init(&s->fast_modems.v29_rx, s->bit_rate, put_bit, put_bit_user_data);
v29_rx_signal_cutoff(&s->fast_modems.v29_rx, -45.5f);
v29_rx_set_modem_status_handler(&s->fast_modems.v29_rx, v29_rx_status_handler, s);
fax_modems_set_rx_handler(s, (span_rx_handler_t) &fax_modems_v29_v21_rx, s, (span_rx_fillin_handler_t) &fax_modems_v29_v21_rx_fillin, s);
break;
case FAX_MODEM_V17_RX:
v17_rx_init(&s->fast_modems.v17_rx, s->bit_rate, put_bit, put_bit_user_data);
v17_rx_set_modem_status_handler(&s->fast_modems.v17_rx, v17_rx_status_handler, s);
fax_modems_set_rx_handler(s, (span_rx_handler_t) &fax_modems_v17_v21_rx, s, (span_rx_fillin_handler_t) &fax_modems_v17_v21_rx_fillin, s);
break;
case FAX_MODEM_V27TER_TX:
v27ter_tx_init(&s->fast_modems.v27ter_tx, s->bit_rate, s->use_tep, get_bit, get_bit_user_data);
fax_modems_set_tx_handler(s, (span_tx_handler_t) &v27ter_tx, &s->fast_modems.v27ter_tx);
fax_modems_set_next_tx_handler(s, (span_tx_handler_t) NULL, NULL);
break;
case FAX_MODEM_V29_TX:
v29_tx_init(&s->fast_modems.v29_tx, s->bit_rate, s->use_tep, get_bit, get_bit_user_data);
fax_modems_set_tx_handler(s, (span_tx_handler_t) &v29_tx, &s->fast_modems.v29_tx);
fax_modems_set_next_tx_handler(s, (span_tx_handler_t) NULL, NULL);
break;
case FAX_MODEM_V17_TX:
v17_tx_init(&s->fast_modems.v17_tx, s->bit_rate, s->use_tep, get_bit, get_bit_user_data);
fax_modems_set_tx_handler(s, (span_tx_handler_t) &v17_tx, &s->fast_modems.v17_tx);
fax_modems_set_next_tx_handler(s, (span_tx_handler_t) NULL, NULL);
break;
}
/*endswitch*/
}
else
{
s->short_train = short_train;
switch (s->fast_modem)
{
case FAX_MODEM_V27TER_RX:
v27ter_rx_restart(&s->fast_modems.v27ter_rx, s->bit_rate, false);
v27ter_rx_set_put_bit(&s->fast_modems.v27ter_rx, put_bit, put_bit_user_data);
v27ter_rx_set_modem_status_handler(&s->fast_modems.v27ter_rx, v27ter_rx_status_handler, s);
fax_modems_set_rx_handler(s, (span_rx_handler_t) &fax_modems_v27ter_v21_rx, s, (span_rx_fillin_handler_t) &fax_modems_v27ter_v21_rx_fillin, s);
break;
case FAX_MODEM_V29_RX:
v29_rx_restart(&s->fast_modems.v29_rx, s->bit_rate, false);
v29_rx_set_put_bit(&s->fast_modems.v29_rx, put_bit, put_bit_user_data);
v29_rx_set_modem_status_handler(&s->fast_modems.v29_rx, v29_rx_status_handler, s);
fax_modems_set_rx_handler(s, (span_rx_handler_t) &fax_modems_v29_v21_rx, s, (span_rx_fillin_handler_t) &fax_modems_v29_v21_rx_fillin, s);
break;
case FAX_MODEM_V17_RX:
v17_rx_restart(&s->fast_modems.v17_rx, s->bit_rate, s->short_train);
v17_rx_set_put_bit(&s->fast_modems.v17_rx, put_bit, put_bit_user_data);
v17_rx_set_modem_status_handler(&s->fast_modems.v17_rx, v17_rx_status_handler, s);
fax_modems_set_rx_handler(s, (span_rx_handler_t) &fax_modems_v17_v21_rx, s, (span_rx_fillin_handler_t) &fax_modems_v17_v21_rx_fillin, s);
break;
case FAX_MODEM_V27TER_TX:
v27ter_tx_restart(&s->fast_modems.v27ter_tx, s->bit_rate, s->use_tep);
v27ter_tx_set_get_bit(&s->fast_modems.v27ter_tx, get_bit, get_bit_user_data);
fax_modems_set_tx_handler(s, (span_tx_handler_t) &v27ter_tx, &s->fast_modems.v27ter_tx);
fax_modems_set_next_tx_handler(s, (span_tx_handler_t) NULL, NULL);
break;
case FAX_MODEM_V29_TX:
v29_tx_restart(&s->fast_modems.v29_tx, s->bit_rate, s->use_tep);
v29_tx_set_get_bit(&s->fast_modems.v29_tx, get_bit, get_bit_user_data);
fax_modems_set_tx_handler(s, (span_tx_handler_t) &v29_tx, &s->fast_modems.v29_tx);
fax_modems_set_next_tx_handler(s, (span_tx_handler_t) NULL, NULL);
break;
case FAX_MODEM_V17_TX:
v17_tx_restart(&s->fast_modems.v17_tx, s->bit_rate, s->use_tep, s->short_train);
v17_tx_set_get_bit(&s->fast_modems.v17_tx, get_bit, get_bit_user_data);
fax_modems_set_tx_handler(s, (span_tx_handler_t) &v17_tx, &s->fast_modems.v17_tx);
fax_modems_set_next_tx_handler(s, (span_tx_handler_t) NULL, NULL);
break;
}
/*endswitch*/
}
/*endif*/
}
static void fax_set_rx_type(void *user_data, int type, int short_train, int use_hdlc)
{
fax_state_t *s;
put_bit_func_t put_bit_func;
void *put_bit_user_data;
s = (fax_state_t *) user_data;
span_log(&s->logging, SPAN_LOG_FLOW, "Set rx type %d\n", type);
if (s->current_rx_type == type)
return;
s->current_rx_type = type;
if (use_hdlc)
{
put_bit_func = (put_bit_func_t) hdlc_rx_put_bit;
put_bit_user_data = (void *) &(s->hdlcrx);
hdlc_rx_init(&(s->hdlcrx), FALSE, FALSE, 5, t30_hdlc_accept, &(s->t30_state));
}
else
{
put_bit_func = t30_non_ecm_put_bit;
put_bit_user_data = (void *) &(s->t30_state);
}
switch (type)
{
case T30_MODEM_V21:
if (s->flush_handler)
s->flush_handler(s, s->flush_user_data, 3);
fsk_rx_init(&(s->v21rx), &preset_fsk_specs[FSK_V21CH2], TRUE, (put_bit_func_t) hdlc_rx_put_bit, put_bit_user_data);
fsk_rx_signal_cutoff(&(s->v21rx), -45.5);
s->rx_handler = (span_rx_handler_t *) &fsk_rx;
s->rx_user_data = &(s->v21rx);
break;
case T30_MODEM_V27TER_2400:
v27ter_rx_restart(&(s->v27ter_rx), 2400, FALSE);
v27ter_rx_set_put_bit(&(s->v27ter_rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v27ter_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V27TER_4800:
v27ter_rx_restart(&(s->v27ter_rx), 4800, FALSE);
v27ter_rx_set_put_bit(&(s->v27ter_rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v27ter_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V29_7200:
v29_rx_restart(&(s->v29rx), 7200, FALSE);
v29_rx_set_put_bit(&(s->v29rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v29_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V29_9600:
v29_rx_restart(&(s->v29rx), 9600, FALSE);
v29_rx_set_put_bit(&(s->v29rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v29_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V17_7200:
v17_rx_restart(&(s->v17rx), 7200, short_train);
v17_rx_set_put_bit(&(s->v17rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v17_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V17_9600:
v17_rx_restart(&(s->v17rx), 9600, short_train);
v17_rx_set_put_bit(&(s->v17rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v17_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V17_12000:
v17_rx_restart(&(s->v17rx), 12000, short_train);
v17_rx_set_put_bit(&(s->v17rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v17_rx;
s->rx_user_data = s;
break;
case T30_MODEM_V17_14400:
v17_rx_restart(&(s->v17rx), 14400, short_train);
v17_rx_set_put_bit(&(s->v17rx), put_bit_func, put_bit_user_data);
s->rx_handler = (span_rx_handler_t *) &early_v17_rx;
s->rx_user_data = s;
break;
case T30_MODEM_DONE:
span_log(&s->logging, SPAN_LOG_FLOW, "FAX exchange complete\n");
default:
s->rx_handler = (span_rx_handler_t *) &dummy_rx;
s->rx_user_data = s;
break;
}
}